CN113323022B

CN113323022B - Well lid device for municipal works

Info

Publication number: CN113323022B
Application number: CN202110628969.3A
Authority: CN
Inventors: 韩磊
Original assignee: Zhejiang Yixin Construction Engineering Co ltd
Current assignee: Zhejiang Yixin Construction Engineering Co ltd
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2023-08-08
Anticipated expiration: 2041-06-04
Also published as: CN113323022A

Abstract

The invention discloses a well lid device for municipal engineering, and belongs to the technical field of municipal engineering. The utility model provides a well lid device for municipal works, including the well lid body, well lid body bottom surface is close to the edge and is annular equidistant a plurality of pump barrels that have set firmly, oblique disc has been cup jointed at the axis middle part, oblique disc bottom surface symmetry is equipped with two pressure posts, the pressure post lower extreme has set firmly two pistons, pump barrel bottom surface symmetry intercommunication two drums, the drum lower extreme has the cover of breathing in through hose connection, hose circumference outer wall upper end one side is equipped with the check valve, close fit between the structure, make the device can produce power through the well at pedestrian or car, thereby make pump barrel work, thereby make the inside cover of breathing in that sets up absorb the gas of deep well under the well lid and discharge, avoided having a large amount of marsh gas production, can not discharge the condition of external dilution through the well lid, the emergence of potential safety hazard has been avoided if having the danger of exploding the well lid such as high temperature has been avoided simultaneously, pedestrian's security has been ensured.

Description

Well lid device for municipal works

Technical Field

The invention relates to the technical field of municipal engineering, in particular to a well lid device for municipal engineering.

Background

The well cover is used for covering a deep well of a road, a water channel of the road and the like, and can prevent people or objects from falling. The TONG state six-in-one casting can be divided into a metal well cover, a high-strength fiber cement concrete well cover, a resin well cover and the like according to materials. In general, a large amount of biogas or odor is generated by the mixture of various wastes such as sewage flowing in the deep well of the road water channel and the like and is emitted to the outside through the holes on the well cover. The prior art publication No. CN112267492A provides a well lid device for municipal works, which can enable the clamping column to be clamped in a fixed block on the well lid by arranging a first telescopic rod, a first spring, a connecting plate, a pulling block and a pull rope, and when a vehicle is pressed on the well lid, the upper end of the fixed block can be buffered by arranging the first spring as a rubber pad is fixedly arranged at the bottom end of a first sliding groove in a well lid seat; the prior art publication No. CN206110188U provides a well lid device for municipal works, the device is through protruding block, damping spring one, shock attenuation pole, shock attenuation board, damping spring, standing groove, snubber block, steel sheet and fixed plate mutually support, can play the effect of reducing car pressure to the well lid, though the device beneficial effect is more, similar prior art CN108708399a, adopt in other solutions to set up exhaust fan or air pump under the well lid and carry out the suction of gas, for example CN105405270a, but still need lay extra circular telegram circuit, further aggravate its danger when meetting combustible gas, but still have following problems: above-mentioned well lid design is too simple, has set up devices such as buffering, and unavoidable a large amount of marsh gas production can not be through the external dilution of well lid discharge, has the potential safety hazard, if meet high temperature etc. and have the danger of frying the well lid, has the foul smell to give off through the hole on the well lid simultaneously, and the volatilization of foul smell not only causes the puzzlement on the sense of smell for the pedestrian, but also seriously influences the urban appearance image, in view of this, we propose a well lid device for municipal works.

Disclosure of Invention

1. Technical problem to be solved

The invention aims to provide a well lid device for municipal engineering, which aims to solve the problems in the background technology.

2. Technical proposal

The utility model provides a well lid device for municipal works, includes the well lid body, the well lid body upper surface is annular equidistant a plurality of circular channels of seting up, every the inside sliding connection of circular channel has a buffer column, still is provided with the ring channel of a plurality of circular channels of intercommunication at well lid body upper surface, is provided with a ring body in this ring channel, is provided with the arc recess at the top of buffer column, and the ring body passes the arc recess of a plurality of buffer columns simultaneously, the buffer column bottom surface is annular equidistant a plurality of springs of having set firmly, the well lid body is inside to be annular equidistant a plurality of circular chambeies of seting up, circular channel and buffer column all are the slope structure setting, the spring lower extreme with circular channel bottom surface is connected fixedly; the inside of the circular cavity is provided with a filtering column, the inside of the filtering column is provided with activated carbon, the upper end of the filtering column penetrates through the inside of the well lid body through a pipeline, extends to the outside and is communicated with a hose arranged on the outer wall of the circumference of the cylinder, and the middle part of the bottom surface of the well lid body is provided with a methane concentration sensor;

the well lid is characterized in that a plurality of square cavities are formed in the well lid body at equal intervals in an annular shape, two fixing blocks are symmetrically arranged on the upper side of the inner wall of each square cavity, a rotating shaft is connected between the two fixing blocks in a rotating mode, a sleeve is connected in the middle of each rotating shaft in a rotating mode, a supporting rod is welded on the circumferential outer wall of each sleeve, the inner end of each supporting rod penetrates through the inner wall of each square cavity to extend into a circular groove, the inner end of each supporting rod is fixedly connected with one side of the circumferential outer wall of each buffer column, a V-shaped rotating rod is connected to the outer side of each supporting rod in a rotating mode through a pin shaft, the lower end of each V-shaped rotating rod is connected with a connecting rod in a rotating mode through a pin shaft, and the upper end of each central shaft penetrates through the inner wall of each air extraction cylinder to extend into the inner side of each square cavity and is fixedly connected with the lower end of each connecting rod;

the well lid body bottom surface is adjacent to the edge and is annular equidistant and has set firmly a plurality of gas extraction tubes, the gas extraction tube middle part rotates and is connected with the axis, the axis middle part has cup jointed oblique disc, oblique disc bottom surface symmetry is equipped with two pressure posts, pressure post upper end welding has spacing ball, two globular ring grooves have been seted up to oblique disc bottom surface symmetry, globular ring groove and spacing ball sliding connection, pressure post lower extreme has set firmly two pistons, two drums of gas extraction tube bottom surface symmetry intercommunication, the piston lower extreme passes the gas extraction tube inside and extends to the drum inside and its inner wall sliding connection, the drum lower extreme has the cover of breathing in through the hose connection, hose circumference outer wall upper end one side is equipped with the check valve.

The filter column upper end passes through the inside extension of well lid body to outside and is linked together with the external world through the pipeline, the filter column upper end passes the inside extension of well lid body to outside through the pipeline and is linked together with the hose that the drum circumference outer wall set up.

The size of the inclined disc is matched with the inner diameter of the air suction cylinder.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

1. according to the invention, the plurality of air suction cylinders are fixedly arranged at the bottom surface of the well lid body close to the edge in an annular equidistant manner, the middle part of each air suction cylinder is rotationally connected with the central shaft, the middle part of each central shaft is sleeved with the inclined disc, the bottom surface of each inclined disc is symmetrically provided with two pressing columns, the upper ends of the pressing columns are welded with limiting balls, the lower ends of the pressing columns are fixedly provided with two pistons, the bottom surfaces of the air suction cylinders are symmetrically communicated with the two cylinders, the lower ends of the cylinders are connected with the air suction cover through the hose, one side of the upper end of the outer wall of the circumference of the hose is provided with the one-way valve, and the structures are tightly matched, so that the device can generate power when people or automobiles pass through the well, the air suction cylinders work, the air suction cover arranged inside can absorb and discharge gas of a deep well under the well lid, a large amount of methane is avoided, the occurrence of external dilution can not be avoided through the well lid, the occurrence of potential safety hazards is avoided, and the safety of the people flying the well lid is ensured if high temperature is met.

2. According to the invention, the surface of the well lid body is provided with the circular grooves at equal intervals, the inside of each circular groove is connected with the buffer column in a sliding manner, the bottom surface of each buffer column is provided with the springs at equal intervals, the inside of the well lid body is provided with the circular cavities at equal intervals, the inside of each circular cavity is provided with the filter column, the filter column is internally provided with the activated carbon, the spring is designed to play a role in buffering protection and provide power for the extraction of gas, and the design of the filter column ensures that the extracted and discharged gas directly passes through the filter column to be discharged, so that the emission of odor is avoided, meanwhile, the odor can be effectively filtered during the discharge, the odor is volatilized to cause smell trouble to pedestrians, and the municipal image is improved.

3. According to the invention, the methane concentration sensor is arranged in the middle of the bottom surface of the well lid body, and the methane concentration under the well lid can be monitored in real time through the methane concentration sensor so as to ensure that the methane concentration is in a normal range; the upper side of the square cavity inner wall is symmetrically provided with two fixed blocks, a rotating shaft is rotationally connected between the two fixed blocks, the middle part of the rotating shaft is rotationally connected with a sleeve, the circumferential outer wall of the sleeve is welded with a supporting rod, the outer side of the supporting rod is rotationally connected with a V-shaped rotating rod through a pin shaft, the inner end of the supporting rod is fixedly connected with one side of the circumferential outer wall of a buffer column, after passing through a well cover, a passing pedestrian automobile is converted into rotation of a central shaft through up-down motion of the buffer column, and the inclined disc is driven to rotate through the reciprocating motion of the supporting rod and the V-shaped rotating rod, so that gas can be extracted;

4. the invention improves the maximum stress limit of each buffer column and improves the uniformity of bottom gas emission at the same time by matching the annular body with the arc-shaped grooves of the buffer columns.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is an expanded view of the internal structure of the manhole cover body of the present invention;

FIG. 3 is a bottom view of the bottom structure of the manhole cover body of the present invention;

FIG. 4 is a split view of the bevel disk structure of the present invention;

FIG. 5 is a schematic view of the internal structure of a square cavity according to the present invention;

the reference numerals in the figures illustrate: 1. a manhole cover body; 101. a circular groove; 102. a circular cavity; 103. a filtration column; 104. a square cavity; 2. a buffer column; 201. a spring; 3. a fixed block; 301. a rotating shaft; 302. a sleeve; 303. a support rod; 304. a V-shaped rotating rod; 305. a connecting rod; 4. a suction cylinder; 401. a center shaft; 402. an inclined disc; 403. spherical annular groove; 404. pressing a column; 405. a limit ball; 406. a piston; 5. a cylinder; 501. a hose; 502. an air suction cover; 503. a one-way valve.

Detailed Description

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-5, the present invention provides a technical solution:

the utility model provides a well lid device for municipal works, includes well lid body 1, well lid body 1 upper surface is annular equidistant and sets up a plurality of circular channels 101, every circular channel 101 inside sliding connection has a buffer column 2, still be provided with the ring channel of a plurality of circular channels 101 of intercommunication on well lid body 1 upper surface, be provided with a ring body in this ring channel, be provided with the arc recess at buffer column 2's top, the ring body passes simultaneously the arc recess of a plurality of buffer columns 2, buffer column 2 bottom surface is annular equidistant and sets firmly a plurality of springs 201, well lid body 1 inside is annular equidistant and sets up a plurality of circular cavities 102, circular channel 101 and buffer column 2 all are the slope structure setting, spring 201 lower extreme with circular channel 101 bottom surface is connected fixedly; the inside of the circular cavity 102 is provided with a filtering column 103, the inside of the filtering column 103 is provided with activated carbon, the upper end of the filtering column 103 passes through the inside of the well lid body 1 through a pipeline, extends to the outside and is communicated with a hose arranged on the circumferential outer wall of the cylinder 5, and the middle part of the bottom surface of the well lid body 1 is provided with a methane concentration sensor;

the inner part of the well lid body 1 is annular and equidistant, a plurality of square cavities 104 are formed in the inner part of the well lid body 1, two fixed blocks 3 are symmetrically arranged on the upper side of the inner wall of each square cavity 104, a rotating shaft 301 is rotatably connected between the two fixed blocks 3, a sleeve 302 is rotatably connected in the middle of the rotating shaft 301, a supporting rod 303 is welded on the circumferential outer wall of the sleeve 302, the inner end of the supporting rod 303 penetrates through the inner wall of each square cavity 104 to extend into the circular groove 101, the inner end of the supporting rod 303 is fixedly connected with one side of the circumferential outer wall of the buffer column 2, a V-shaped rotating rod 304 is rotatably connected to the outer side of the supporting rod 303 through a pin shaft, a connecting rod 305 is rotatably connected to the lower end of each V-shaped rotating rod 304 through a pin shaft, and the upper end of the middle shaft 401 penetrates through the inner wall of the air suction cylinder 4 to extend into the square cavity 104 and is fixedly connected with the lower end of the connecting rod 305;

the well lid body 1 bottom surface is near the edge and is annular equidistant and has set firmly a plurality of gas extraction tubes 4, the rotation of gas extraction tube 4 middle part is connected with axis 401, the inclined disc 402 has been cup jointed at the axis 401 middle part, inclined disc 402 bottom surface symmetry is equipped with two pressure posts 404, pressure post 404 upper end welding has spacing ball 405, two spherical ring grooves 403 have been seted up to inclined disc 402 bottom surface symmetry, spherical ring groove 403 and spacing ball 405 sliding connection, pressure post 404 lower extreme has set firmly two pistons 406, two drums 5 of gas extraction tube 4 bottom surface symmetry intercommunication, the piston 406 lower extreme passes the inside extension of gas extraction tube 4 to drum 5 inside and its inner wall sliding connection, drum 5 lower extreme is connected with suction cap 502 through hose 501, hose 501 circumference outer wall upper end one side is equipped with check valve 503.

The upper end of the filtering column 103 passes through the well lid body 1 to extend to the outside through a pipeline and is communicated with the outside, and the upper end of the filtering column 103 passes through the well lid body 1 to extend to the outside through a pipeline and is communicated with a hose arranged on the circumferential outer wall of the cylinder 5.

The size of the inclined disc 402 is matched with the inner diameter of the air suction cylinder 4.

The tight fit between the structure for the device can be at pedestrian or car through the well production power, thereby make the section of thick bamboo 4 of bleeding work, thereby make the suction hood 502 of inside setting absorb the gas of deep well under the well lid and discharge, avoided having a large amount of marsh gas production, can not pass through the circumstances that well lid discharge external dilution, avoided the emergence of potential safety hazard, avoided having the danger of exploding the well lid if meetting high temperature etc. simultaneously, ensured pedestrian's security.

Specifically, the round groove 101 and the buffer column 2 are all arranged in an inclined structure, and the lower end of the spring 201 is fixedly connected with the bottom surface of the round groove 101. The circular groove 101 and the buffer column 2 are all in an inclined structure, so that the buffer column 2 can move obliquely, and the support rod 303 can be driven to move up and down, so that the change of the track can be adapted, and the V-shaped rotating rod 304 is driven to reciprocate.

Further, the upper end of the filtering column 103 passes through the inside of the well lid body 1 to extend to the outside through a pipeline and is communicated with the outside, and the upper end of the filtering column 103 passes through the inside of the well lid body 1 to extend to the outside through a pipeline and is communicated with a hose arranged on the circumferential outer wall of the cylinder 5. So that the gas under the manhole cover body 1 can be discharged to the outside through the filtering column 103.

Still further, the inner end of the supporting rod 303 passes through the inner wall of the square cavity 104 and extends into the circular groove 101, and the inner end of the supporting rod 303 is fixedly connected with one side of the circumferential outer wall of the buffer column 2. So that the buffer post 2 can drive the support rod 303 to reciprocate.

Further, the lower end of the V-shaped rotating rod 304 is rotatably connected with a connecting rod 305 through a pin, and the upper end of the center shaft 401 extends into the square cavity 104 through the inner wall of the air suction cylinder 4 and is fixedly connected with the lower end of the connecting rod 305. The V-shaped rotating rod 304 reciprocates to drive the connecting rod 305 to rotate, so that the middle shaft 401 is driven to rotate, and the inclined disc 402 is driven to rotate.

It should be noted that two spherical annular grooves 403 are symmetrically formed on the bottom surface of the inclined disc 402, and the spherical annular grooves 403 are slidably connected with the limiting balls 405. By rotating the inclined disc 402, the limit ball 405 slides in the spherical annular groove 403, so that the limit ball 405 reciprocates up and down.

Notably, the bevel disk 402 is sized to fit the inside diameter of the pump cylinder 4, and the lower end of the piston 406 extends through the inside of the pump cylinder 4 into the cylinder 5 and is slidably connected to the inside wall thereof. The piston 406 is driven to move up and down by the limit ball 405, so that the air suction action can be performed.

When the well lid device for municipal engineering is needed, firstly, the well lid body 1 is covered at a deep well mouth, when a pedestrian and a vehicle walk, as the surface of the well lid body 1 is provided with a plurality of circular grooves 101 at equal intervals in an annular shape, the inside of each circular groove 101 is connected with a buffer column 2 in a sliding manner, the circular grooves 101 and the buffer columns 2 are all arranged in an inclined structure, the lower ends of springs 201 are fixedly connected with the bottom surfaces of the circular grooves 101, the circular grooves 101 and the buffer columns 2 are all arranged in an inclined structure, the buffer columns 2 can move in an inclined manner, so that the supporting rods 303 can be driven to move up and down, the change of track can be adapted, as the inner ends of the supporting rods 303 penetrate through the inner walls of square cavities 104 and extend into the circular grooves 101, the inner ends of the supporting rods 303 are fixedly connected with one side of the circumferential outer walls of the buffer columns 2, the buffer columns 2 can drive the supporting rods 303 to reciprocate, and thus the V-shaped rotating rods 304 are driven to reciprocate, the lower end of the V-shaped rotating rod 304 is rotationally connected with a connecting rod 305 through a pin shaft, the upper end of a center shaft 401 penetrates through the inner wall of the air suction cylinder 4 to extend into the square cavity 104 and is fixedly connected with the lower end of the connecting rod 305, the connecting rod 305 is driven to rotate through reciprocation of the V-shaped rotating rod 304, the center shaft 401 is driven to rotate, the inclined disc 402 is driven to rotate, two spherical annular grooves 403 are symmetrically arranged on the bottom surface of the inclined disc 402, the spherical annular grooves 403 are in sliding connection with a limit ball 405, the limit ball 405 reciprocates up and down due to sliding of the limit ball 405 in the spherical annular grooves 403, the lower end of a piston 406 penetrates through the inner part of the air suction cylinder 4 to extend into the cylinder 5 and is in sliding connection with the inner wall of the cylinder, the piston 406 is driven to move up and down through the limit ball 405, so that air suction action can be carried out, the upper end of the filtering column 103 passes through the inside of the well lid body 1 to extend to the outside through a pipeline and is communicated with the outside, and the upper end of the filtering column 103 passes through the inside of the well lid body 1 to extend to the outside through a pipeline and is communicated with a hose arranged on the circumferential outer wall of the cylinder 5, so that the gas below the well lid body 1 can be discharged to the outside through the filtering column 103;

the upper surface of the well lid body 1 is further provided with an annular groove communicated with the plurality of round grooves 101, an annular ring body is arranged in the annular groove, the top of the buffer column 2 is provided with an arc-shaped groove, the annular ring body simultaneously penetrates through the arc-shaped grooves of the plurality of buffer columns 2, the maximum stress limit of each buffer column can be improved through the cooperation of the annular body and the arc-shaped grooves of the plurality of buffer columns, the uniformity of bottom gas emission can be improved, and the well lid is particularly suitable for operation scenes where the well lid is arranged at corners, and only part of buffer columns can be directly stressed due to the fact that the running track of pedestrians or vehicles at the positions is relatively fixed.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a well lid device for municipal works, includes well lid body (1), its characterized in that: the novel well cover comprises a well cover body (1), wherein the upper surface of the well cover body (1) is provided with a plurality of circular grooves (101) at equal intervals in an annular shape, each circular groove (101) is internally connected with a buffer column (2) in a sliding manner, the upper surface of the well cover body (1) is also provided with an annular groove for communicating the plurality of circular grooves (101), an annular body is arranged in the annular groove, the top of the buffer column (2) is provided with an arc-shaped groove, the annular body simultaneously penetrates through the arc-shaped four grooves of the plurality of buffer columns (2), the bottom surface of the buffer column (2) is provided with a plurality of springs (201) at equal intervals in an annular shape, a plurality of circular cavities (102) are formed in the well cover body (1) at equal intervals in an annular shape, the circular grooves (101) and the buffer column (2) are all arranged in an inclined structure, and the lower ends of the springs (201) are fixedly connected with the bottom surface of the circular grooves (101); the device is characterized in that a filter column (103) is arranged in the circular cavity (102), active carbon is arranged in the filter column (103), the upper end of the filter column (103) penetrates through the inside of the well lid body (1) through a pipeline, extends to the outside and is communicated with a hose arranged on the circumferential outer wall of the cylinder (5), and a methane concentration sensor is arranged in the middle of the bottom surface of the well lid body (1);

the well lid is characterized in that the inside of the well lid body (1) is provided with a plurality of square cavities (104) at equal intervals in an annular shape, the upper sides of the inner walls of the square cavities (104) are symmetrically provided with two fixing blocks (3), two fixing blocks (3) are rotationally connected with a rotating shaft (301), the middle part of the rotating shaft (301) is rotationally connected with a sleeve (302), the circumferential outer wall of the sleeve (302) is welded with a supporting rod 303), the inner end of the supporting rod (303) penetrates through the inner wall of the square cavities (104) to extend into the circular groove (101), the inner end of the supporting rod (303) is fixedly connected with one side of the circumferential outer wall of the buffer column (2), the outer side of the supporting rod (303) is rotationally connected with a V-shaped rotating rod (304) through a pin shaft, the lower end of the V-shaped rotating rod (304) is rotationally connected with a connecting rod (305) through a pin shaft, and the upper end of the middle shaft (401) penetrates through the inner wall of the air suction cylinder (4) to extend into the square cavities (104) and is fixedly connected with the lower end of the connecting rod (305).

The well lid is characterized in that a plurality of air suction cylinders (4) are fixedly arranged on the bottom surface of the well lid body (1) at equal intervals and are close to the edge, a middle shaft (401) is rotationally connected to the middle of each air suction cylinder (4), an inclined disc (402) is sleeved at the middle of each middle shaft (401), two pressing columns (404) are symmetrically arranged on the bottom surface of each inclined disc (402), limit balls (405) are welded at the upper ends of the pressing columns (404), two spherical annular grooves (403) are symmetrically arranged on the bottom surface of each inclined disc (402), the spherical annular grooves (403) are in sliding connection with the limit balls (405), two pistons (406) are fixedly arranged at the lower ends of the pressing columns (404), the bottom surfaces of the air suction cylinders (4) are symmetrically communicated with two cylinders (5), the lower ends of the pistons (406) penetrate through the air suction cylinders (4) and extend into the cylinders (5) and are in sliding connection with the inner walls of the cylinders, air suction covers (502) are connected to the lower ends of the cylinders (5), and one side of the upper ends of the outer walls of the circumferences of the hoses (501) are provided with one-way valves (503);

when a pedestrian vehicle walks, the buffer column (2) can move obliquely and drive the limit ball (405) to reciprocate up and down, the limit ball (405) drives the piston (406) to move up and down, the piston can perform air suction, the upper end of the filter column (103) passes through the inner part of the well lid body (1) to extend to the outside through a pipeline and is communicated with a hose arranged on the circumferential outer wall of the cylinder (5), gas below the well lid body (1) can be discharged to the outside through the filter column (103) and the maximum stress limit of each buffer column can be improved through the cooperation of the arc four grooves of the annular body and the buffer columns, and the uniformity of bottom gas emission can be improved.

2. The well lid device for municipal works according to claim 1, wherein: the upper end of the filtering column (103) penetrates through the inner portion of the well lid body (1) to extend to the outside through a pipeline and is communicated with the outside, and the upper end of the filtering column (103) penetrates through the inner portion of the well lid body (1) to extend to the outside through a pipeline and is communicated with a hose arranged on the circumferential outer wall of the cylinder (5).

3. The well lid device for municipal works according to claim 1, wherein: the size of the inclined disc (402) is matched with the inner diameter of the air suction cylinder (4).