CN111395401A - Sewer well lid - Google Patents

Sewer well lid Download PDF

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Publication number
CN111395401A
CN111395401A CN202010203157.XA CN202010203157A CN111395401A CN 111395401 A CN111395401 A CN 111395401A CN 202010203157 A CN202010203157 A CN 202010203157A CN 111395401 A CN111395401 A CN 111395401A
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CN
China
Prior art keywords
rod
well
well lid
hook
manhole cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010203157.XA
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Chinese (zh)
Inventor
周超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan Shengyu Drainage Systems Co Ltd
Original Assignee
Wuhan Shengyu Drainage Systems Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan Shengyu Drainage Systems Co Ltd filed Critical Wuhan Shengyu Drainage Systems Co Ltd
Publication of CN111395401A publication Critical patent/CN111395401A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/12Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14Covers for manholes or the like; Frames for covers
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/12Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14Covers for manholes or the like; Frames for covers
    • E02D29/1418Covers for manholes or the like; Frames for covers with implements to assist in lifting, e.g. counterweights, springs
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/04Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/06Gully gratings

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Civil Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sewage (AREA)

Abstract

The invention discloses a sewer well lid, which comprises a well seat, a well lid and a connecting mechanism, wherein the well lid is movably connected with the well seat, the well lid is arranged on the well seat, a sealing ring is arranged between the well lid and the well seat, more than two sinking grooves are formed in the well lid, and each sinking groove is provided with the connecting mechanism.

Description

Sewer well lid
Technical Field
The invention relates to the technical field of well lids, in particular to a sewer well lid.
Background
At present, when the rainfall, sewage pipe the inside water level is very high, and when gravity flow became the pressure flow, the last well lid of municipal drainage pipe just faced the effect of holding in the palm in the top, and the well lid will be washed out under hydraulic effect, and the well lid is in full open state or dislocation state, unable self-closing, when the road ponding, needs vehicle and pedestrian when the walking on the road, will face very big danger, and the people also can fall into the sewer the inside, consequence serious very.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and provides the sewer well cover which can automatically relieve pressure and can automatically reset after the pressure is reduced.
In order to achieve the purpose, the invention adopts the following technical scheme:
the embodiment of the invention provides a sewer well cover, which comprises a well seat, a well cover and a connecting mechanism, wherein:
the well cover is movably connected with the well base, the well cover is arranged on the well base, and a sealing ring is arranged between the well cover and the well base;
the well cover is provided with more than two sinking grooves which are arranged at intervals around the center of the well cover, and each sinking groove is provided with a connecting mechanism;
the connecting mechanism comprises a connecting rod and a connecting part, one end of the connecting rod is connected with the sinking groove in a sliding mode, the connecting part is arranged on the well seat, and the other end of the connecting rod extends out of the bottom of the sinking groove and is detachably connected with the connecting part.
Optionally, the sewer well lid still includes the spring, and the connecting rod is including connecting gradually fixed rod cap and pole body, and the spring housing is established on one's body the pole, and the spring setting is in heavy inslot portion, and the one end and the rod cap looks butt of spring, the other end and the bottom looks butt of heavy groove of spring.
Optionally, the top of the wand cap is provided with a mounting slot.
Optionally, the sewer well lid further comprises an O-shaped sealing ring, the O-shaped sealing ring is fixedly arranged on the circumferential surface of the rod cap, the rod cap is arranged inside the sinking groove, and the O-shaped sealing ring is located between the rod cap and the inner wall of the sinking groove.
Optionally, the bottom of the sinking groove is provided with a through hole, the rod body penetrates through the through hole, the connecting part is an ear hook, the ear hook is arranged on the inner circumferential surface of the well lid, the bottom of the connecting rod is also provided with a rod hook, and the rod hook is detachably hooked with the ear hook.
Optionally, the rod hook is an elastic cylindrical pin, a pin hole is formed in the lower end of the rod body, and the elastic cylindrical pin penetrates through the pin hole to be connected with the lower end of the rod body.
Optionally, the ear hook includes a first hook plate and a second hook plate, the first hook plate and the second hook plate are arranged side by side, the rod body is disposed between the first hook plate and the second hook plate, and two ends of the elastic cylindrical pin are respectively hooked with the first hook plate and the second hook plate.
Optionally, the well seat includes first step seat and second step seat, and first step seat sets up in second step seat top, and the diameter of the interior circumference of first step seat is greater than the diameter of the interior circumference of second step seat, well lid and well seat swing joint, and the well lid setting on second step seat, the ear hook setting is on the interior circumference of second step seat.
Optionally, a groove is formed in the first step seat, a convex block is arranged on the outer circumferential surface of the well lid, and the convex block is embedded in the groove.
Optionally, the junction of first step seat and second step seat forms first anchor ring, and the fixed setting of sealing washer is in the bottom of well lid, and the sealing washer is located between well lid and the first anchor ring.
Optionally, the method further includes: a sealing mechanism disposed on the through-hole to seal contact between the shaft and the through-hole when the shaft passes through the through-hole.
The invention provides a sewer well lid, when the water pressure of the well lid is too high, accumulated water can push the well lid upwards and away, because a connecting mechanism is arranged between the well lid and a well seat, and the connecting mechanism does not move upwards through the structure of a sink groove, and the well lid can be covered on the well seat again under the action of the self gravity when the water pressure under the well lid drops, so that the automatic resetting of the well lid is realized, and the sewer well lid has good practicability.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic cross-sectional view of a manhole cover of the present invention;
FIG. 2 is a schematic top view of the manhole cover of the present invention;
FIG. 3 is an enlarged view of the structure at A in FIG. 1;
FIG. 4 is a schematic structural view of the connecting rod of the present invention;
fig. 5 is a further enlarged schematic view of the structure at a in fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Fig. 1 is a schematic view of a cross-sectional structure of a manhole cover of the present invention, fig. 3 is an enlarged schematic view of a structure at a position a in fig. 1, and as shown in fig. 1 and fig. 3, the present embodiment provides a manhole cover of a sewer, which includes a manhole base 1, a manhole cover 2 and a connecting mechanism, the manhole base 1 is used to be fixedly disposed on the ground, the middle of the position 1 of the manhole base has an open ring shape, the open ring is communicated with a sewer, the manhole cover 2 is movably connected with the manhole base 1, the manhole cover 2 is disposed on the manhole base 1, and the manhole cover 2 can completely cover the open ring of the manhole. In this embodiment, be provided with four heavy grooves 6 on the well lid 2, four heavy grooves 6 are around well lid 2's center looks interval arrangement to the interval between per two heavy grooves 6 is all the same, and each heavy groove 6 department all is provided with a coupling mechanism, and well lid 2 and well seat 1 are connected through coupling mechanism. It should be noted that the number of the sinking grooves 6 is arranged according to actual needs, and only the well lid 2 needs to be jacked up by water without side turning, so that at least two sinking grooves 6 need to be arranged.
Fig. 4 is a schematic structural diagram of the connecting rod of the present invention, and as shown in fig. 1, fig. 3 and fig. 4, the connecting mechanism specifically includes the connecting rod 3 and the connecting portion, the connecting rod 3 includes a rod cap 31, a rod body 32 and a rod hook 33 which are connected and fixed in sequence, the diameter of the rod cap 31 is greater than that of the rod body 32, so that a second ring surface is formed at the connection position of the rod body 32 and the rod cap 31, and when the well lid 2 is punched by a person, the second ring surface can block the bottom of the sinking groove 6 of the well lid 2, so as to prevent the well.
Further, a through hole is formed at the bottom of the sink 6, another part of the rod 32 passes through the through hole, a rod hook 33 is fixedly arranged at the bottom end of the rod 32, a hook angle is formed between the rod hook and the rod 32, a connecting part is arranged on the inner circumferential surface of the well lid 2, and the rod hook 33 is detachably hooked with the connecting part. It is noted that the connecting portion may be an ear hook 5 or other member having a notch for hooking with the stem hook 33.
When meetting the well lid when water pressure is too big, ponding will push the well lid 2 upwards open, because ear hook 5 sets up on the interior circumference of well seat 1, pole hook 33 and 5 looks hookups of ear hook, so connecting rod 3 upward movement not, and well lid 2 can be at upward movement, because the junction of pole body 32 and pole cap 31 forms the second anchor ring, can prevent breaking away from of well lid 2, wait to the water pressure decline under well lid 2, well lid 2 will be covered once more under the effort of self gravity and establish on well seat 1, realize the automatic re-setting of well lid 4, and the device has good practicality.
Further, please continue to refer to fig. 5, in the normal connection process of the well lid 2 and the well base 1, or in the process that the well lid 2 is driven by the water pressure to move the rod body 32 of the connecting rod 3 upward, in order to avoid the dirt in the well from permeating into the sink groove 6 from the connecting gap between the rod body 32 and the through hole, and further cause the relevant parts in the sink groove 6 to be soaked, corroded, etc. by the sewage, the life cycle of the relevant parts is shortened to generate unnecessary maintenance cost.
As an embodiment of the sealing mechanism, the sealing mechanism may be a groove 14 which is provided on the inner wall of the through hole and has a ring shape, the groove 14 is provided in an embedded manner on the inner wall of the through hole, and a flexible sealing ring, such as a rubber ring having a contracting or elastic function, is provided in the groove 14, so that the sealing ring is provided in the groove and seals the contact between the shaft 32 and the through hole when the shaft 32 passes through the through hole.
As another embodiment of the sealing mechanism, the sealing mechanism may be a rubber patch that is stuck on the inner wall of the through hole and has a shrinking or elastic function, and the rubber patch is compressed when the shaft 32 passes through the through hole to seal the contact between the shaft 32 and the through hole.
Those skilled in the art can understand that the sealing mechanism specifically realizes the sealing between the shaft 32 and the through hole according to any of the above embodiments, and the arrangement may be selected according to actual operation requirements; in other words, the specific structure of the sealing mechanism is not specifically limited in the present invention, and the above two structural manners, as well as the similar structural manners in the prior art, are all applicable to the present invention as long as the sealing mechanism can achieve the technical effect of sealing between the shaft 32 and the through hole, and are also within the protection scope of the present invention.
Further, coupling mechanism still includes spring 4, spring 4 cover is established on pole body 32, and spring 4 and some pole body 32 set up in heavy groove 6 insidely, spring 4's one end forms second ring face looks butt with the junction of pole body 32 and pole cap 31, spring 4's the other end and the bottom of heavy groove 6 are held in the butt, when well lid 2 is dashed, spring 4 can be compressed, and when the pressure of water descends, spring 4's elasticity also can provide certain power for the whereabouts of well lid 1, therefore, after being provided with spring 4, need bigger power just can jack up well lid 2, increase the degree of difficulty that well lid 2 was jacked up, increase the security of the sewer well lid of this embodiment.
It is worth noting that the sewer well lid of this embodiment is also very convenient to install, when the well lid 2 is covered on the well base 1, the connecting rod 3 is pressed down, then the connecting rod 3 is rotated, the rod hook 33 of the connecting rod 3 rotates to the lower part of the ear hook 5 along with the rotation of the connecting rod 3, the connecting rod 3 stops being pressed down immediately, the connecting rod 3 resets upwards under the action of the spring 4, and the rod hook 33 also moves upwards at the moment, so as to be hooked with the ear hook 5. When the well lid 2 needs to be opened, the connecting rod 3 is required to be pressed down, then the connecting rod 3 is rotated reversely, the rod hook 33 of the connecting rod 3 rotates to be staggered with the ear hook 5 along with the rotation of the connecting rod 3, the pressing of the connecting rod 3 is stopped immediately, the connecting rod 3 is reset upwards under the action of the spring 4, the rod hook 33 also moves upwards at the moment, but is staggered with the ear hook 5, and therefore the well lid 2 is separated from the well base 1, and the well lid is quite simple, convenient and rapid.
Example two
As another embodiment of the present invention, unlike the previous embodiment, the well base 1 of the present embodiment includes a first step base 11 and a second step base 12, the first step base 11 is disposed above the second step base 12, and the diameter of the inner circumferential surface of the first step base 11 is larger than that of the inner circumferential surface of the second step base 12, that is, the joint of the first step base 11 and the second step base 12 forms a first annular surface, when the well lid 2 is covered on the well base 1, and the well lid 2 is disposed on the second step base, that is, the bottom surface of the well lid 2 abuts against the first annular surface, and the outer circumferential surface of the well lid 2 matches with the inner circumferential surface of the first step base 11, the inner circumferential surface of the first step base 11 can limit the movement of the well lid 2 in the horizontal plane, and the ear hooks 5 are disposed on the inner circumferential surface of the second step base.
Fig. 2 is a schematic view of a top view structure of the manhole cover of the sewer of the present invention, as shown in fig. 2, a groove 13 is formed on the first step seat 11, a protrusion 21 is formed on an outer circumferential surface of the manhole cover 2, the protrusion 21 is embedded in the groove 13, the water soluble carbon of the groove 13 and the protrusion 21 can be set according to actual requirements, and the circumferential rotation of the manhole cover 2 can be limited by the cooperation of the groove 13 and the protrusion 21.
Further, sewer well lid still is provided with sealing washer 9, and sealing washer 9 is fixed to be set up in the bottom of well lid 2, and sealing washer 9 is located between well lid 2 and the first anchor ring, when not having ponding to wash well lid 2 open, seals through sealing washer 9 between well lid 2 and the well seat 1, prevents that outside rivers from flowing into the sewer.
Further, the top of the rod cap 31 is provided with a mounting groove 34, which may be a straight line or a cross, the mounting groove 34 being adapted to the shape of the driver for screwing the connecting rod 3. It should be noted that in the present embodiment, the rod cap 31 is completely located inside the sinking groove 6, so that pedestrians that the rod cap 31 passes over the manhole cover 2 and pass by backwards can be avoided.
Further, the sewer manhole cover is further provided with an O-shaped sealing ring 7, the O-shaped sealing ring 7 is fixedly arranged on the circumferential surface of the rod cap 31, as shown in fig. 4, an annular groove is arranged on the circumferential surface of the rod cap 31 and used for fixing the O-shaped sealing ring 7, the O-shaped sealing ring 7 is embedded in the annular groove, the rod cap 31 is arranged inside the sinking groove 6, the O-shaped sealing ring 7 is positioned between the rod cap 31 and the inner wall of the sinking groove 6, the sealing degree between the rod cap 31 and the sinking groove 6 can be increased, and external water is prevented from permeating into the sewer from the sinking groove 6.
Further, be provided with a plurality of gusset 8 on the well lid 2, gusset 8 is fixed to be set up at the lower surface of well lid 2 for increase the intensity of well lid, make it can bear great water pressure.
Furthermore, the upper surface of the well lid 2 is provided with a plurality of convex edges 22, so that the anti-skid function is achieved.
Further, in this embodiment, the rod hook 33 may be an elastic cylindrical pin, a pin hole needs to be formed at the lower end of the rod body 32, the elastic cylindrical pin penetrates through the pin hole to be connected with the lower end of the rod body 32, and the elastic cylindrical pin has a good elastic force and can bear a large pressure.
Furthermore, the ear hook 5 comprises a first hook plate and a second hook plate, the first hook plate and the second hook plate are arranged side by side, the rod body 32 is arranged between the first hook plate and the second hook plate, two ends of the elastic cylindrical pin are respectively hooked with the first hook plate and the second hook plate, and the two ends are hooked, so that the stress of the elastic cylindrical pin is more balanced.
The embodiment of this specification provides a sewer well lid, when meetting the well lid when water pressure is too big, ponding will push the well lid upwards open, because on connecting portion set up and the well seat, and the one end of connecting rod and heavy groove sliding connection, the bottom that the other end of connecting rod extended heavy groove can be dismantled with connecting portion and be connected, so the connecting rod does not the upward movement, wait to the water pressure decline under the well lid, the well lid will be covered once more under the effort of self gravity and establish on the well seat, realize the automatic re-setting of well lid, and the device has good practicality.
The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. It should be noted that, for those skilled in the art, without departing from the principle of the present application, several improvements and modifications can be made, and these improvements and modifications should also be construed as the protection scope of the present application.

Claims (10)

1. The utility model provides a sewer well lid which characterized in that, includes well seat (1), well lid (2) and coupling mechanism, wherein:
the well cover (2) is movably connected with the well base (1), and the well cover (2) is arranged on the well base (1);
be provided with two above heavy groove (6) on well lid (2), more than two heavy groove (6) center interval of well lid (2) arranges, and each heavy groove (6) department all is provided with one coupling mechanism.
2. The sewer manhole cover of claim 1,
the connecting mechanism comprises a connecting rod (3) and a connecting part, one end of the connecting rod (3) is connected with the sinking groove (6) in a sliding mode, the connecting part is arranged on the well seat (1), and the other end of the connecting rod (3) extends out of the bottom of the sinking groove (6) and is detachably connected with the connecting part.
3. The sewer manhole cover according to claim 2, further comprising a spring (4), wherein the connecting rod (3) comprises a rod cap (31) and a rod body (32) which are sequentially connected and fixed, the spring (4) is sleeved on the rod body (32), the spring (4) is arranged inside the sinking groove (6), one end of the spring (4) abuts against the rod cap (31), and the other end of the spring (4) abuts against the bottom of the sinking groove (6).
4. Manhole cover according to claim 3, wherein the top of said rod cap (31) is provided with a mounting groove (34).
5. Manhole cover according to claim 3, further comprising an O-ring (7), said O-ring (7) being fixedly arranged on the circumferential surface of said rod cap (31), said rod cap (31) being arranged inside said sink tank (6), said O-ring (7) being located between said rod cap (31) and the inner wall of said sink tank (6).
6. The sewer manhole cover according to claim 3, wherein the bottom of the sink groove (6) is provided with a through hole through which the rod body (32) passes, the connecting part is an ear hook (5), the ear hook (5) is disposed on the inner circumferential surface of the manhole cover (2), the bottom of the connecting rod (3) is further provided with a rod hook (33), and the rod hook (33) is detachably hooked with the ear hook (5).
7. Manhole cover according to claim 6, wherein the rod hook (33) is a resilient cylindrical pin, the lower end of the rod (32) being provided with a pin hole through which the resilient cylindrical pin is connected to the lower end of the rod (32).
8. Manhole cover according to claim 7, wherein said ear hook (5) comprises a first hook plate and a second hook plate, said first and second hook plates being arranged side by side, said shank (32) being arranged between said first and second hook plates, the two ends of said elastic cylindrical pin being hooked respectively with said first and second hook plates.
9. The sewer manhole cover according to claim 2, wherein the well base (1) comprises a first step base (11) and a second step base (12), the first step base (11) is arranged above the second step base (12), the diameter of the inner circumferential surface of the first step base (11) is larger than that of the inner circumferential surface of the second step base (12), the manhole cover (2) is movably connected with the well base (1), the manhole cover (2) is arranged on the second step base, and the ear hooks (5) are arranged on the inner circumferential surface of the second step base;
a groove (13) is formed in the first step seat (11), a convex block (21) is arranged on the outer circumferential surface of the well cover (2), and the convex block (21) is embedded in the groove (13);
first step seat (11) with the junction of second step seat (12) forms first anchor ring, sealing washer (9) are fixed to be set up the bottom of well lid (2), just sealing washer (9) are located well lid (2) with between the first anchor ring.
10. The sewer manhole cover of claims 6-8, further comprising:
a sealing mechanism disposed on the through-hole to seal contact between the shaft and the through-hole when the shaft passes through the through-hole.
CN202010203157.XA 2019-07-12 2020-03-20 Sewer well lid Pending CN111395401A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201921097058 2019-07-12
CN2019210970587 2019-07-12

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CN111395401A true CN111395401A (en) 2020-07-10

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CN202020367752.2U Active CN212956624U (en) 2019-07-12 2020-03-20 Sewer well lid
CN202010203157.XA Pending CN111395401A (en) 2019-07-12 2020-03-20 Sewer well lid
CN202020372434.5U Active CN212561617U (en) 2019-07-12 2020-03-20 Sewer well lid
CN202010203173.9A Pending CN111395402A (en) 2019-07-12 2020-03-20 Sewer well lid

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CN202020367752.2U Active CN212956624U (en) 2019-07-12 2020-03-20 Sewer well lid

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CN202020372434.5U Active CN212561617U (en) 2019-07-12 2020-03-20 Sewer well lid
CN202010203173.9A Pending CN111395402A (en) 2019-07-12 2020-03-20 Sewer well lid

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN212956624U (en) * 2019-07-12 2021-04-13 武汉圣禹排水系统有限公司 Sewer well lid

Citations (5)

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Publication number Priority date Publication date Assignee Title
CN203654437U (en) * 2013-12-05 2014-06-18 中国重汽集团济南动力有限公司 Drain well lid
CN104372807A (en) * 2014-11-24 2015-02-25 浙江瑞森路政设施有限公司 Side seal well lid
CN204456222U (en) * 2015-03-12 2015-07-08 徐建民 A kind of Safety well cover
CN106592746A (en) * 2017-02-13 2017-04-26 郑州轻工业学院 Safe sewer well lid
CN212956624U (en) * 2019-07-12 2021-04-13 武汉圣禹排水系统有限公司 Sewer well lid

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Publication number Priority date Publication date Assignee Title
EP0999311A1 (en) * 1998-11-03 2000-05-10 Josef Hammer Manhole cover for dust tight closure of manholes, in particular for wells
CN107237355A (en) * 2016-03-28 2017-10-10 湖北冠唯井盖科技有限公司 One kind opens easily anti-theft type inspection well cover
CN108678026A (en) * 2018-06-22 2018-10-19 周家元 A kind of antitheft adjustable type well lid

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203654437U (en) * 2013-12-05 2014-06-18 中国重汽集团济南动力有限公司 Drain well lid
CN104372807A (en) * 2014-11-24 2015-02-25 浙江瑞森路政设施有限公司 Side seal well lid
CN204456222U (en) * 2015-03-12 2015-07-08 徐建民 A kind of Safety well cover
CN106592746A (en) * 2017-02-13 2017-04-26 郑州轻工业学院 Safe sewer well lid
CN212956624U (en) * 2019-07-12 2021-04-13 武汉圣禹排水系统有限公司 Sewer well lid

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CN212561617U (en) 2021-02-19
CN111395402A (en) 2020-07-10
CN212956624U (en) 2021-04-13

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