CN105863030A - Well lid of inspection well and inspection well used for drainage pipe in comprehensive pipe rack - Google Patents
Well lid of inspection well and inspection well used for drainage pipe in comprehensive pipe rack Download PDFInfo
- Publication number
- CN105863030A CN105863030A CN201610235252.1A CN201610235252A CN105863030A CN 105863030 A CN105863030 A CN 105863030A CN 201610235252 A CN201610235252 A CN 201610235252A CN 105863030 A CN105863030 A CN 105863030A
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- lid
- groove
- well
- protruding
- inspection shaft
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Classifications
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Health & Medical Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Sewage (AREA)
Abstract
The invention discloses a well lid of an inspection well. The well lid comprises a fixed cover fixedly installed at the position of an opening in the upper portion of a pitshaft and an opening cover hinged to the fixed cover. A liquid level meter and a ventilating pipe penetrate and are arranged on the fixed cover, the liquid level meter is provided with a liquid level safety rod electrically connected with the liquid level meter, and the ventilating pipe is provided with an exhaust safety rod electrically connected with the ventilating pipe. The invention further discloses the inspection well used for a drainage pipe in a comprehensive pipe rack. The inspection well comprises the well lid of the inspection well, the well lid is installed at the position of the opening in the upper portion of the pitshaft, and the lower end of the pitshaft is connected with a well base. The opening cover of the well lid and the pitshaft have very good sealing performances, and sewage is effectively prevented from flowing backward and infiltrating; due to the design of the dual safety rods of the fixed cover, not only is the safety of a maintainer entering the inspection well greatly guaranteed, but also the mechanical locking of the safety rods also further guarantees that during a high water level, the well lid is prevented from being flushed open and the sewage is prevented from flowing backwards. Ladders arranged on the inner side and the outer side of the pitshaft enable the maintainer to go in or out of the pitshaft conveniently.
Description
Technical field
The invention belongs to inspection shaft technical field, be specifically related to a kind of inspection shaft well lid and for pipe gallery internal drainage pipeline
Inspection shaft.
Background technology
Pipe gallery, also known as common trench, it be implement unified planning, design, construct and safeguard, be built in Urban Underground for
Lay the public utility of the multiple municipal pipelines such as water supply, draining, combustion gas, electric power, communication.Drainage pipeline typically carries
Gravity stream, after it includes pipe gallery in, the inspection shaft safeguarded for tubular service has had new requirement as follows:
(1) prevent pernicious gas from escaping.Hydrogen sulfide, natural pond is inevitably produced in the drainage pipeline laid in pipe gallery
The poisonous and harmfuls such as gas and fuel gas, if these gases leak to, in piping lane cabin, there is potential safety hazard by inspection shaft,
Therefore pipe gallery should be discharged.
(2) prevent rain sewage from entering.In piping lane, gravity drainage pipeline may, upstream and downstream drainage system water outer by piping lane
The impact of the situations such as position fluctuation change, burst impact load, sewage, rainwater in drainage pipeline fall possibly through inspection shaft
Fill or leak into pipe gallery cabin, other can be entered corridor pipeline, pipe gallery corollary equipment and environmental sanitation and bring sternly
Ghost image rings, and is also unfavorable for the overall operation of pipe gallery.
(3) requirement of safe operation.When needs use inspection shaft that pipeline is overhauled, the conventional maintenance management work such as desilting
Time, need to ensure drainage pipeline to pipe gallery, staff without adverse effect (anhydrous spilling, well after such as guaranteeing to open well lid
Interior harmful gas concentration is under controlling value).
(4) facility is installed.Inspection shaft should easy installation light, durable, the handling being suitable in pipe gallery install.
(5) maintenance is convenient.In pipe gallery inspection shaft need solve " on " inspection shaft problem, should be well in inspection shaft in addition
Lower staff provides the services such as illumination.
And existing municipal drainage pipeline inspection shaft all cannot meet some requirement above.
Summary of the invention
Present invention aim to address the problems referred to above, it is provided that a kind of inspection shaft well lid meeting safe operation requirement, it is ensured that open
After well lid in anhydrous spilling, well harmful gas concentration under controlling value.
Another object of the present invention is to provide a kind of multifunctional examining well for pipe gallery internal drainage pipeline, have splendid
Sealing property, effectively prevent backing up of sewage and infiltrating, and maintenance be convenient.
For solving above-mentioned technical problem, the technical scheme is that a kind of inspection shaft well lid, including being fixedly mounted on inspection
Fixing lid at well shaft upper opening, and the unlatching lid hinged with fixing lid, fixing covering is equipped with liquid level gauge and ventilation
Pipe, liquid level gauge is provided with the liquid level safety pole being connected electrically, and breather pipe is provided with the exhaust, safety bar being connected electrically.
Preferably, the side that described fixing lid is relative with opening lid is provided with the 3rd groove, and unlatching covers and is provided with and the 3rd groove
The 3rd coordinated is protruding, is equipped with sealing rubber strip with the 3rd convex surfaces in the 3rd groove.
Preferably, described fixing lid lower surface is provided with illuminating lamp, camera and detector, detector and exhaust
Safety pole electrically connects.
Preferably, described unlatching covers and is provided with handle lock.
A kind of inspection shaft for pipe gallery internal drainage pipeline that the present invention provides, including above-mentioned inspection shaft well lid, well lid
Being arranged at the upper opening of pit shaft, the lower end of pit shaft is connected with well seat.
Preferably, described pit shaft edge is provided with first groove relative with opening lid and the second groove, and the first groove is positioned at second
Groove periphery, the first projection that unlatching lid edge is provided with pit shaft is protruding with second, first protruding and the first groove match,
Second protruding and the second groove match.
Preferably, in described first groove and in the second groove, is provided with sealing rubber strip, the bottom plane of the first projection and
First protruding with open lid lower surface transition position and be provided with sealing rubber strip, the bottom plane of the second projection and second protruding with
Open lid lower surface transition position and be provided with sealing rubber strip.
Preferably, the height of described second groove is less than the height of the first groove.
Preferably, the outer wall of described pit shaft is provided with outer cat ladder, and inwall is provided with interior cat ladder.
Preferably, fixing lid is just arranged, on interior cat ladder shaft in wall between fixing lid and outer cat ladder by described outer cat ladder.
The invention has the beneficial effects as follows: the inspection shaft for pipe gallery internal drainage pipeline provided by the present invention, well lid is set
It is calculated as fixing lid and opens lid two parts, opening lid, with pit shaft, there is splendid sealing property, effectively prevent backing up of sewage and enter
Ooze；The design of the double safety pole of fixing lid is not only the great guarantee that safely provided of the maintainer of entrance inspection shaft, simultaneously
When the mechanical caging of safety pole is also for preventing high water level, well lid is rushed to open backing up of sewage and adds one layer of guarantee.
Accompanying drawing explanation
Fig. 1 is the present invention structural representation for the inspection shaft of pipe gallery internal drainage pipeline；
Fig. 2 is the top view of well lid of the present invention；
Fig. 3 is the partial sectional view of well lid of the present invention and pit shaft；
Fig. 4 is the sealing schematic diagram that the present invention opens lid and pit shaft；
Fig. 5 is that the present invention fixes lid and opens the sealing schematic diagram of lid；
Fig. 6 is that the present invention opens lid opening schematic diagram；
Fig. 7 is another angle schematic diagram that the present invention opens lid opening；
Schematic diagram when Fig. 8 is that on pit shaft of the present invention, outer cat ladder and interior cat ladder are mounted opposite；
Schematic diagram when Fig. 9 is that on pit shaft of the present invention, outer cat ladder and interior cat ladder are staggered installation of.
Description of reference numerals: 1, well seat；2, pit shaft；3, fixing lid；4, lid is opened；5, liquid level gauge；6, breather pipe；7、
Liquid level safety pole；8, exhaust, safety bar；9, the first groove；10, the second groove；11, first is protruding；12, second is protruding；
13, the 3rd groove；14, the 3rd is protruding；15, outer cat ladder；16, interior cat ladder；17, handle lock；18, damp hinge；19、
Illuminating lamp；20, sealing rubber strip.
Detailed description of the invention
The present invention is described further with specific embodiment below in conjunction with the accompanying drawings:
Embodiment one:
As it is shown in figure 1, the well lid of the inspection shaft of the present invention, well lid is circular, including fixing lid 3 and unlatching lid 4, fixing lid
3 are fixedly mounted at the upper opening of pit shaft 2 of inspection shaft, fixed form can use riveting or can manufacture integrated with pit shaft,
It is less that fixing cover accounts for area, and its arc angle can be 90 °～the scope of about 150 °.Open lid 4 to lead to fixing lid 3
Crossing external damp hinge 18 to connect, external damp hinge 18 can effectively prevent rain sewage, humid air in drainage pipeline
Corrosion to hinge member.Additionally damp hinge also allows maintainer's open manhole cover of pipe gallery more laborsaving, opens 4 dozens, lid
Can be the most upright after opening, it is simple to maintainer operates further.Open lid 4 and be provided with handle lock 17, it is simple to open lid 4
Open and close.
Fixing lid 3 is provided with liquid level gauge 5 and breather pipe 6, liquid level gauge 5 and breather pipe 6 and is all arranged in fixing lid 3, with pit shaft
Space in 2 is connected, and liquid level gauge can measure underground water level, and breather pipe picks out from fixing lid, can be connected to the logical of pipe gallery outfit
Wind devices (or being connected to the miniature ventilation pump arranged specially).As depicted in figs. 1 and 2, liquid level safety pole 7 is arranged on liquid level gauge
5 places contacted with fixing lid 3, one end of liquid level safety pole 7 is rotatably connected with liquid level gauge 5, and the other end is to opening lid
4 extend, and liquid level safety pole 7 is parallel with the plane opened residing for lid 4.Exhaust, safety bar 8 is arranged on breather pipe 6 and fixing lid
3 places contacted, one end of exhaust, safety bar 8 is rotatably connected with breather pipe 6, and the other end is to opening lid 4 extension, row
Gas safety pole 8 is parallel with the plane opened residing for lid 4.
Liquid level gauge 5 can use ultrasonic level gage or other kinds of liquid level gauge matured product, but answers the exportable signal of telecommunication, uses
In the rotation controlling liquid level safety pole 7.Breather pipe 6 is equipped with switch and the timer that can open ventilation equipment, opens ventilation and sets
Timer i.e. time synchronisation after standby switch, when running between reach setting value after, timer output the signal of telecommunication, be used for controlling
The rotation of exhaust, safety bar.The design of double safety poles be only enter inspection shaft maintainer safely provided great guarantor
Barrier, when the mechanical caging of safety pole simultaneously is also for preventing high water level, well lid is rushed to open backing up of sewage and adds one layer of guarantee.
When needs enter inspection shaft: 1, open liquid level gauge and carry out reading, liquid level is less than setting value, is i.e. judged as overflowing into
Pipe gallery cabin, now liquid level safety pole 90-degree rotation counterclockwise；If higher than setting value, safety pole locking cannot rotate.
2, ventilation equipment or the miniature ventilation pump that breather pipe is connected is started, after the time reaching to set of bleeding, exhaust, safety bar up time
Pin 90-degree rotation；Not up to duration of ventilation, safety pole locking cannot rotate.3, after double-rod is all rotated in place, handle lock side
Can use, manual unlocking opens lid, and personnel enter.Even if handle lock is artificially unlocked, if liquid level safety pole and exhaust peace
Any one of full bar does not rotates, and opens lid and cannot will open because of the mechanical stop of safety pole.
As it is shown on figure 3, fixing lid 3 lower surfaces are provided with illuminating lamp 19, camera and detector (not providing in figure),
Wherein illuminating lamp 19 and camera all should band explosion prevention functions.Illuminating lamp can facilitate maintainer's work of conveniently going into the well, camera
With the access of the equipment such as detector, the later stage can be accessed by the intelligent operation system of pipe gallery, arranges camera inside well lid
Monitoring, advantageously in the safety of maintainer, also can more intuitively grasp the operation state of drainage pipeline.Detector and row
Gas safety pole 8 electrically connects, and can not be equipped with the duration of ventilation of timer as signal with breather pipe 6, but pass through detector
The detection gas concentration such as methane, hydrogen sulfide, after concentration is less than setting value, sends the signal of telecommunication, and turn clockwise exhaust, safety
Bar.The abundant functional module set up around fixing lid, is all considered as equipment waterproof.
As it is shown in figure 5, use single slot sealing arrangement between removable cover and fixing lid.Utilize the thickness of well lid, fixing lid 3 with
Open lid 4 relative sides and be provided with the 3rd groove 13, open lid 4 and be provided with the 3rd projection coordinated with the 3rd groove 13
14, it is equipped with sealing rubber strip 20 with the 3rd protruding 14 surfaces in the 3rd groove 13.Sealing rubber strip in 3rd groove 13
Should be covered with groove, cross section is U-shaped；The sealing rubber strip on the 3rd protruding 14 surfaces is arranged in whole high spot, and cross section is similar to
Arcuate.
It should be noted that the well lid pattern of the present invention does not limit to the drainage inspection well being applied in pipe gallery, municipal drainage
Inspection shaft, feed-water valve well, pump wells, communication well, electric power well etc. all can use this well lid.
Embodiment two:
As depicted in figs. 1 and 2, the inspection shaft for pipe gallery internal drainage pipeline of the present invention, including well seat 1, pit shaft 2
With the well lid described in embodiment one, well seat (including that chute, interface etc. are arranged) uses conventional municipal plastic inspection well to arrange.
Pit shaft 2 is arranged on well seat 1, for the cylinder of hollow.Well lid is movably set at the upper opening of pit shaft 2.Inspection shaft
Main material is plastics, and plastics have corrosion resistance, ageing resistance, length in service life, outstanding sealing barrier performance, execute
Work is convenient and swift.
As shown in Fig. 3 to Fig. 7, using double slot sealing arrangement between removable cover and pit shaft, pit shaft 2 edge is provided with and opens lid 4
Relative two circle grooves, the first groove 9 and the second groove 10, wherein the first groove 9 is positioned at the second groove 10 periphery.Open lid
4 edges are provided with the first protruding 11 and second projection 12 of pit shaft 2, and first protruding 11 matches with the first groove 9,
Second protruding 12 matches with the second groove 10.
As shown in Figure 4, it is provided with sealing rubber strip in the first groove 9 and in the second groove 10, the sealing rubber strip 20 of pit shaft
Should be covered with groove, its cross section is U-shaped.Sealing rubber strip 20 at first protruding 11 be arranged on the first projection 11 under
Transverse plane and first protruding 11 with open lid 4 lower surface transition positions, the sealing rubber strip 20 of the second projection 12 is arranged on the
The bottom plane of two projections 12 and second protruding 12 covers 4 lower surface transition positions with opening.When projection is engaged with groove,
Every pair of groove can form three dot encapsulations.Dual-slot structure can form six dot encapsulations altogether.In the present embodiment, the second groove 10
Height less than the height of the first groove 9, more optimize the anti-seepage effect of water in well.
The above-mentioned sealing rubber strip 20 for well lid, pit shaft all can use bonding way to fix.When well lid is closed, removable cover profit
Lock with self gravitation and handle lock, safety pole, and then sealing rubber strip is compressed, effectively seal and then antiseepage reverse-filling.
Being mounted on plastic-steel cat ladder inside and outside pit shaft 2, outer wall is provided with outer cat ladder 15, and inwall is provided with interior cat ladder 16.In reality
Border application in, cat ladder exponent number according to pit shaft actual height arrange, the installation site of outer cat ladder 15 and interior cat ladder 16 also dependent on
Need to adjust, below two kinds of common mounting means are illustrated.
As shown in Figure 8, outer cat ladder 15 and interior cat ladder 16 can be symmetrical arranged, and particularly, outer cat ladder 15 and interior cat ladder 16 are equal
Just fixing lid 3 is arranged.
As it is shown in figure 9, when planned well cylinder size is less, fixing lid 3 can not just be arranged, particularly, outward by interior cat ladder 16
Fixing lid 3 is just arranged by cat ladder 15, on the interior cat ladder 16 pit shaft 2 inwall between fixing lid 3 and outer cat ladder 15.Pole
The earth facilitates pipe gallery maintainer and passes in and out inspection shaft.
Those of ordinary skill in the art is it will be appreciated that embodiment described here is to aid in the reader understanding present invention's
Principle, it should be understood that protection scope of the present invention is not limited to such special statement and embodiment.This area common
It is various specifically that technical staff can make various other without departing from essence of the present invention according to these technology disclosed by the invention enlightenment
Deformation and combination, these deformation and combination are the most within the scope of the present invention.
Claims (10)
1. an inspection shaft well lid, it is characterised in that: include being fixedly mounted on consolidating at manhole shaft (2) upper opening
Fixed lid (3), and the unlatching lid (4) hinged with fixing lid (3), fixing lid (3) is equipped with liquid level gauge (5) and leads to
Tracheae (6), liquid level gauge (5) is provided with the liquid level safety pole (7) being connected electrically, and breather pipe (6) is provided with and its electricity
The exhaust, safety bar (8) connected.
Inspection shaft well lid the most according to claim 1, it is characterised in that: described fixing lid (3) covers (4) with opening
Relative side is provided with the 3rd groove (13), opens lid (4) and is provided with the 3rd projection coordinated with the 3rd groove (13)
(14), in the 3rd groove (13) and the 3rd protruding (14) surface is equipped with sealing rubber strip.
Inspection shaft well lid the most according to claim 1, it is characterised in that: described fixing lid (3) lower surface is provided with
Illuminating lamp (19), camera and detector, detector electrically connects with exhaust, safety bar (8).
Inspection shaft well lid the most according to claim 1, it is characterised in that: described lid (4) of opening is provided with handle lock
(17)。
5. the inspection shaft for pipe gallery internal drainage pipeline, it is characterised in that: include institute as arbitrary in claim 1-4
The inspection shaft well lid stated, well lid is arranged at the upper opening of pit shaft (2), and the lower end of pit shaft (2) is connected with well seat (1).
Inspection shaft the most according to claim 5, it is characterised in that: described pit shaft (2) edge is provided with and opens lid (4)
Relative the first groove (9) and the second groove (10), it is peripheral that the first groove (9) is positioned at the second groove (10), opens lid
(4) edge is provided with first protruding (11) and second protruding (12) of pit shaft (2), first protruding (11) and first
Groove (9) matches, and second protruding (12) match with the second groove (10).
Inspection shaft the most according to claim 6, it is characterised in that: with the second groove (10) in described first groove (9)
Inside being provided with sealing rubber strip, (4) following table is covered with opening in bottom plane and first protruding (11) of first protruding (11)
Face transition position is provided with sealing rubber strip, and (4) are covered with opening in bottom plane and second protruding (12) of second protruding (12)
Lower surface transition position is provided with sealing rubber strip.
Inspection shaft the most according to claim 6, it is characterised in that: the height of described second groove (10) is less than first
The height of groove (9).
Inspection shaft the most according to claim 5, it is characterised in that: the outer wall of described pit shaft (2) is provided with outer cat ladder
(15), inwall is provided with interior cat ladder (16).
Inspection shaft the most according to claim 9, it is characterised in that: described outer cat ladder (15) is just to fixing lid (3)
Arranging, interior cat ladder (16) is positioned on pit shaft (2) inwall between fixing lid (3) and outer cat ladder (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610235252.1A CN105863030B (en) | 2016-04-14 | 2016-04-14 | A kind of inspection shaft well lid and the inspection shaft for pipe gallery internal drainage pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610235252.1A CN105863030B (en) | 2016-04-14 | 2016-04-14 | A kind of inspection shaft well lid and the inspection shaft for pipe gallery internal drainage pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105863030A true CN105863030A (en) | 2016-08-17 |
| CN105863030B CN105863030B (en) | 2017-10-27 |
Family
ID=56632227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610235252.1A Active CN105863030B (en) | 2016-04-14 | 2016-04-14 | A kind of inspection shaft well lid and the inspection shaft for pipe gallery internal drainage pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105863030B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109610610A (en) * | 2019-01-14 | 2019-04-12 | 中国市政工程西北设计研究院有限公司 | A kind of application apparatus of new city drainage inspection well |
| CN112392124A (en) * | 2020-10-23 | 2021-02-23 | 上海市政工程设计研究总院（集团）有限公司 | Wisdom drainage inspection shaft |
| CN112726676A (en) * | 2020-12-30 | 2021-04-30 | 博地建设集团有限公司 | Multifunctional inspection well system and air pump adapter matched with air outlet thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4166729A1 (en) * | 2021-10-13 | 2023-04-19 | Roland Tschupp | Cover for an inspection chamber and a collar system for an inspection chamber |
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| CN201024787Y (en) * | 2007-04-10 | 2008-02-20 | 宋贵波 | Mechanical cipher well cover lock |
| KR100914627B1 (en) * | 2008-07-18 | 2009-09-02 | (주)해안종합건축사사무소 | Manhole cover using slide locking key |
| CN203097362U (en) * | 2013-03-22 | 2013-07-31 | 成都源创环保工程有限公司 | Module type prefabricated pump station |
| CN203188248U (en) * | 2013-04-22 | 2013-09-11 | 张宁 | Novel antitheft well lid with skylight |
| CN205637054U (en) * | 2016-04-14 | 2016-10-12 | 中建地下空间有限公司 | Inspection well lid and be used for inspection shaft that utility tunnel internal drain pipe said |
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2016
- 2016-04-14 CN CN201610235252.1A patent/CN105863030B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201024787Y (en) * | 2007-04-10 | 2008-02-20 | 宋贵波 | Mechanical cipher well cover lock |
| KR100914627B1 (en) * | 2008-07-18 | 2009-09-02 | (주)해안종합건축사사무소 | Manhole cover using slide locking key |
| CN203097362U (en) * | 2013-03-22 | 2013-07-31 | 成都源创环保工程有限公司 | Module type prefabricated pump station |
| CN203188248U (en) * | 2013-04-22 | 2013-09-11 | 张宁 | Novel antitheft well lid with skylight |
| CN205637054U (en) * | 2016-04-14 | 2016-10-12 | 中建地下空间有限公司 | Inspection well lid and be used for inspection shaft that utility tunnel internal drain pipe said |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109610610A (en) * | 2019-01-14 | 2019-04-12 | 中国市政工程西北设计研究院有限公司 | A kind of application apparatus of new city drainage inspection well |
| CN112392124A (en) * | 2020-10-23 | 2021-02-23 | 上海市政工程设计研究总院（集团）有限公司 | Wisdom drainage inspection shaft |
| CN112726676A (en) * | 2020-12-30 | 2021-04-30 | 博地建设集团有限公司 | Multifunctional inspection well system and air pump adapter matched with air outlet thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105863030B (en) | 2017-10-27 |
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