CN110219362A - Integrated pump station - Google Patents

Integrated pump station Download PDF

Info

Publication number
CN110219362A
CN110219362A CN201910600146.2A CN201910600146A CN110219362A CN 110219362 A CN110219362 A CN 110219362A CN 201910600146 A CN201910600146 A CN 201910600146A CN 110219362 A CN110219362 A CN 110219362A
Authority
CN
China
Prior art keywords
pump
pump station
pumping plant
sand discharging
water
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
CN201910600146.2A
Other languages
Chinese (zh)
Inventor
江福钱
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.)
Fujian Luyuan Environmental Protection Technology Co ltd
Original Assignee
Fujian Luyuan Environmental Protection Technology 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 Fujian Luyuan Environmental Protection Technology Co ltd filed Critical Fujian Luyuan Environmental Protection Technology Co ltd
Priority to CN201910600146.2A priority Critical patent/CN110219362A/en
Publication of CN110219362A publication Critical patent/CN110219362A/en
Pending legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/22Adaptations of pumping plants for lifting sewage

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention relates to the technical field of sewage treatment equipment, in particular to an integrated pump station, which comprises a pump station body and a control cabinet, wherein a pump station inlet is arranged above the pump station body, an overhaul platform is arranged at the middle upper part of the pump station body, a staircase is arranged between the pump station inlet and the overhaul platform, a submersible sewage pump is arranged below the overhaul platform, a water inlet pipeline and a water outlet pipeline are arranged on the pump station body, the submersible sewage pump can be arranged below the overhaul platform in a vertically lifting mode through a lifting device, a liquid level floating ball sensor is arranged in the pump station body, and the submersible sewage pump and the water outlet pipeline are communicated through a coupling device, a water pipe, a telescopic pipe, a flexible rubber joint. The self-cleaning device is simple in structure and convenient to install, and can protect the normal work of the water pump and realize self-cleaning of the integrated pump station; the service life of the water pump and the pump station is prolonged, a large amount of manpower and material resources are saved, and the maintenance and cleaning cost is low.

Description

A kind of integrated pump station
Technical field
The present invention relates to technical field of sewage treatment equipment more particularly to a kind of integrated pump stations.
Background technique
With the continuous quickening of national cities and towns process, the continuous expansion of city size, the discharge amount of municipal sewage is also more next It is bigger.Integrated pump station plays increasingly important role during municipal sewage collection system and centralized processing.Conventional one Change pumping plant mainly by glass reinforced plastic formed cylinder body, proof submersible sand discharging pump, inspection platform, staircase, water inlet line, outlet conduit, automatic coupling Attach together set, the composition such as automatic control system.It is mainly used for collecting and discharging residential quarters, restaurant, school, factory, army's barracks With the sewage and waste water of other public places etc., buried or half buried installation is mainly used.
Currently, integrated pump station cylinder body bottom in the market is fixed, the hanging height of water pump oviduct is all certain. But hanging high value influences significantly fluidised form near oviduct, suitable hanging height can make water flow stationary evenly into loudspeaker Pipe.When hanging high smaller, the flow-shape into oviduct is very poor, causes hydraulic loss larger, and be easy to produce whirlpool Whirlpool causes water pump to generate cavitation.When hanging high larger, flow rate of water flow is smaller at bottom plate, and water flow cannot be fully absorbed.Sewage In contain a large amount of sludge and other impurities rubbish, so that pumping plant bottom be caused to be easy accumulation sludge and rubbish, both influence pumping plant Working performance can generate stink again, and it is very inconvenient that cleaning is got up, and wastes a large amount of manpower and material resources, and maintenance and disposal costs are higher. For authorization patent of invention 201120088061X using a kind of well formula pumping plant that can generate water flow of prewhirling, technical principle is cesspool The sewage of bottom flows into basin of prewhirling along basin septal fossula of prewhirling, and water flow identical with suction pump direction of rotation is formed in basin of prewhirling, The shutdown water level of suction pump can be effectively reduced, and be conducive to the sewage and sludge at cleaning cesspool bottom.But since Pump Suction Nozzle is pre- Rotation increases, and enters the rotation circular rector enhancing of pump, pump assembly can be caused to vibrate and occur cavitation.Patent of invention is disclosed 201420411033.0 install rotary cleaning paddle, Air plasma deodorizing apparatus and gas exhaust piping at pumping plant cylinder bottom, clear by rotating Paddle is swept in the stirring of bottom, prevents sludge from accumulating, peculiar smell is eliminated and reaches self-cleaning effect.But electric rotating motivation is working When can generate very big vibration, nor timely and effectively self-cleaning function can be reached.
A kind of one is disclosed just like a kind of bottom hydraulically adjustable integrated pump station of Chinese patent CN105464204A again Change pumping plant, is equipped with proof submersible sand discharging pump, inspection platform, proof submersible sand discharging pump, inlet and outlet pipes, pumping plant cylinder in pumping plant cylinder Body bottom is equipped with hydraulic lift, and hydraulic lift is equipped with stainless steel plate, and stainless steel plate is located at proof submersible sand discharging pump Lower section, stainless steel plate surrounding and the sealing of pumping plant cylinder inboard wall cooperate, and liquid-level floater sensor is equipped in pumping plant cylinder;It is a kind of double Pumping plant cylinder disclosed in cartridge type integrated pump station (publication number: CN204646810U) and the maintenance being arranged in pumping plant cylinder are flat Platform, proof submersible sand discharging pump, water inlet line, outlet conduit, pumping plant cylinder body bottom set hydraulic lift, and inner cylinder is located at proof submersible sand discharging pump Lower section and opening is towards proof submersible sand discharging pump, is equipped with sliding slot on the inner sidewall of pumping plant cylinder, adds pulley in sliding slot, inner cylinder with Pumping plant cylinder lateral wall is slidably connected through pulley, inner cylinder under the action of hydraulic lift, the pulley being set in sliding slot can on Lower movement, but the bulky heaviness of patent disclosed above, mobility is poor, and when the damage of hydraulic lift, and maintenance is tired It is difficult.
Summary of the invention
Therefore, for above-mentioned problem, the present invention proposes a kind of adjustable integrated pump station of proof submersible sand discharging pump, knot of the present invention Structure is simple, easy for installation, and water pump can be protected to work normally the automatically cleaning for being able to achieve integrated pump station again;Extend water pump and pump The service life stood, has saved a large amount of manpower and material resources, and maintenance and disposal costs are lower.
To achieve the above object, the invention adopts the following technical scheme: a kind of integrated pump station, including pumping plant ontology and Control cabinet, the pumping plant ontology top are equipped with pumping plant entrance, and pumping plant ontology middle and upper part is equipped with inspection platform, and the pumping plant enters It is equipped with staircase between mouth and inspection platform, proof submersible sand discharging pump is provided with below the inspection rack, pumping plant ontology is equipped with water inlet pipe Road, outlet conduit, the proof submersible sand discharging pump are connected to outlet conduit, and the proof submersible sand discharging pump can oscilaltion by lifting device Ground is set to below inspection platform, and liquid-level floater sensor is equipped in the pumping plant ontology, is transmitted according to liquid-level floater sensor The intrinsic water level signal of pumping plant, is gone up and down by lifting device proof submersible sand discharging pump, the proof submersible sand discharging pump and outlet conduit Pass sequentially through coupling device, water pipe, telescopic tube, flexible flexible glue connector, 90 ° of bend pipe connections.
It further improves, the telescopic tube includes outer tube, inner tube and rubber hose, and the outer tube is set in inner tube On, one end of the rubber hose is bonded along its circumferential inner wall with outer tube, the other end of the rubber hose along its it is circumferential with The inner wall of inner tube bonds.
It further improves, the outer tube, inner tube are made of self-lubricating engineering plastics.
Further improve, the lifting device include under the inspection platform can oscilaltion setting mounting base, And the hydraulic device of control mounting base lifting, the coupling device are fixed in mounting base, the coupling device is equipped with and leads Rail, the proof submersible sand discharging pump are equipped with lifting rod, and the front sewage disposal pump is dropped to by guide rail to be connect with coupling device.
It further improves, the outer tube passes through inspection platform and is fixedly mounted on inspection platform, the inspection platform Limit plate is equipped between mounting base, said inner tube is actively threaded through on limit plate
It further improves, water inlet line is equipped with crush type grid.
It further improves, venthole is equipped with above the pumping plant ontology.
By using preceding solution, dive the beneficial effects of the present invention are: the present invention is controlled by setting lifting device The height of water dredge pump makes it obtain suitable oviduct vacantly high, and fully absorbs in cylinder water body at the middle and upper levels, makes water pump operation Steadily, when water level reduces in cylinder, reducing proof submersible sand discharging pump makes its hanging high reduction and is fully absorbed impurity in bottom water stream, Not only it had protected water pump to operate normally but also had realized the automatically cleaning of integrated pump station;By using scalable water pipe, cooperation diving row Dirt pump rise and fall, are socketed by inner and outer tubes, can freely adjust length, and inside is equipped with rubber hose, can laterally indulge To stretching, guarantee flow, prevents water-pipe blockage, leakage, have the characteristics that structure is simple, easy to use, meanwhile, inner and outer tubes are equal It is made of self-lubricating engineering plastics, convenient for being bonded with rubber hose, since it is with antifriction, wearability, in inner and outer tubes During sliding, without adding oil lubrication, reduce maintenance cost, furthermore self-lubricating engineering plastics also have it is good resistance to Corrosivity, for metal material and traditional pvc pipe, the service life is longer;Further, right by the way that limit plate is arranged Guiding role is played in the rising and decline of telescopic tube inner tube;Further, crush type grid is installed in water inlet line exit, makes Entered in pump barrel into sundries contained by the water flow in water inlet line by crush type grid.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention;
Fig. 2 is the structural schematic diagram of telescopic tube of the embodiment of the present invention.
Specific embodiment
Now in conjunction with the drawings and specific embodiments, the present invention is further described.
With reference to Fig. 1, Fig. 2, the present embodiment provides a kind of integrated pump stations, including the pumping plant ontology made of glass reinforced plastic, control Cabinet (not shown) processed, the pumping plant ontology top are equipped with pumping plant entrance 13 and venthole 14, pumping plant ontology middle and upper part Equipped with inspection platform 2, it is equipped with staircase 3 between the pumping plant entrance 13 and inspection platform 2, is provided with below the inspection platform 2 Proof submersible sand discharging pump 4, the our station ontology are equipped with water inlet line 15, outlet conduit 16, the water inlet line 15, outlet conduit 16 On be equipped with electric valve, the electric valve and control cabinet signal communication, the water inlet line 15 are equipped with crush type grid 5, institute It states proof submersible sand discharging pump 4 to be connected to outlet conduit 16, specifically, the proof submersible sand discharging pump 4 can oscilaltion by lifting device Set on the lower section of inspection platform 2, the proof submersible sand discharging pump 4 and outlet conduit 16 pass sequentially through coupling device 22, water pipe 23, scalable 25,90 ° of pipe, flexible flexible glue connector bend pipes 26 are connected to, and the lifting device includes can oscilaltion under inspection platform 2 The hydraulic device 62 that the mounting base 61 and control mounting base 61 of setting are gone up and down, the coupling device 22 are fixed at mounting base 61 On, the coupling device 22 is equipped with guide rail 221, and the proof submersible sand discharging pump 4 is dropped to by guide rail 221 to be connected with coupling device 22 It connects, the proof submersible sand discharging pump 4 is equipped with lifting rod 41.
The telescopic tube 24 includes the outer tube 241 made of self-lubricating engineering plastics, inner tube 242 and rubber hose 243, the outer tube 241 is set in inner tube 242, and one end of the rubber hose 243 is circumferential viscous with the inner wall of outer tube 241 along it It closes, the other end of the rubber hose 243 is bonded along its circumferential inner wall with inner tube 242, and the outer tube 241 passes through inspection platform It 2 and is fixedly mounted on inspection platform 2, limit plate 21, said inner tube 242 is equipped between the inspection platform 2 and mounting base 61 It is actively threaded through on limit plate 21 simultaneously, in order to prevent the winding at random of electric wire 42 of proof submersible sand discharging pump 4, the inspection platform 2 It is equipped with clockwork 43, the electric wire 42 is wrapped on clockwork 43, and can be according to submersible sewage by clockwork 43 It pumps 4 lifting and extends, stretches, wherein the existing conventional structure of clockwork 43 does not repeat herein.
Liquid-level floater sensor 7, the liquid-level floater sensor 7, proof submersible sand discharging pump 4 and liter are equipped in the pumping plant ontology In the pumping plant ontology that falling unit is transmitted with control cabinet signal communication, the proof submersible sand discharging pump 4 according to liquid-level floater sensor 7 respectively Water level signal it is gone up and down by lifting device, it is described
In the present embodiment, the lifting device is hydraulic cylinder, can also pass through motor, oil cylinder etc. in practical applications Other devices realize the object of the invention.
In the present embodiment, the control cabinet can be located at pumping plant body interior or be located at pumping plant outer body, institute Stating control cabinet can also carry out remote control to it according to wireless signal.
The present invention controls the height of proof submersible sand discharging pump by setting lifting device, specifically, it passes through control coupling device Lifting so that proof submersible sand discharging pump synchronization lifting together, (wherein, the coupling device is existing structure, is seldom gone to live in the household of one's in-laws on getting married herein State), so that it is vacantly high so that proof submersible sand discharging pump is obtained suitable oviduct, and water body at the middle and upper levels is fully absorbed in cylinder, transports water pump Steadily, when water level reduces in cylinder, reduce proof submersible sand discharging pump makes its hanging high reduction and inhales impurity in bottom water stream sufficiently row It receives, water pump had not only been protected to operate normally but also realizes the automatically cleaning of integrated pump station;By using scalable water pipe, cooperation diving Dredge pump rise and fall are socketed by inner and outer tubes, can freely adjust length, and inside is equipped with rubber hose, can be lateral Longitudinal stretching guarantees flow, prevents water-pipe blockage, leakage, has the characteristics that structure is simple, easy to use, meanwhile, inner and outer tubes It is made of self-lubricating engineering plastics, convenient for being bonded with rubber hose, since it is with antifriction, wearability, in inner tube and outside During pipe slides, without adding oil lubrication, reduce maintenance cost, furthermore self-lubricating engineering plastics also have it is good Corrosion resistance, for metal material and traditional pvc pipe, the service life is longer;Further, by the way that limit plate is arranged, Guiding role is played to the rising and decline of telescopic tube inner tube;Further, crush type grid is installed in water inlet line exit, Enter sundries contained by the water flow entered in water inlet line in pump barrel by crush type grid.
It should be noted that term " center ", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outside" etc. The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and letter Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and Operation, therefore be not considered as limiting the invention.
Although specifically showing and describing the present invention in conjunction with preferred embodiment, those skilled in the art should be bright It is white, it is not departing from the spirit and scope of the present invention defined by the appended claims, it in the form and details can be right The present invention makes a variety of changes, and is protection scope of the present invention.

Claims (7)

1. a kind of integrated pump station, including pumping plant ontology and control cabinet, the pumping plant ontology top is equipped with pumping plant entrance, the pump Ontology middle and upper part stand equipped with inspection platform, staircase is equipped between the pumping plant entrance and inspection platform, is set below the inspection rack It is equipped with proof submersible sand discharging pump, pumping plant ontology is equipped with water inlet line, outlet conduit, and the proof submersible sand discharging pump is connected to outlet conduit, It is characterized by: the proof submersible sand discharging pump can be set to below inspection platform to oscilaltion by lifting device, the pumping plant sheet It is equipped with liquid-level floater sensor in vivo, the intrinsic water level signal of pumping plant transmitted according to liquid-level floater sensor passes through lifting Device proof submersible sand discharging pump is gone up and down, and the proof submersible sand discharging pump and outlet conduit pass sequentially through coupling device, water pipe, scalable Pipe, flexible flexible glue connector, 90 ° of bend pipe connections.
2. a kind of integrated pump station according to claim 1, it is characterised in that: the telescopic tube includes outer tube, inner tube And rubber hose, the outer tube are set in inner tube, one end of the rubber hose is bonded along its circumferential inner wall with outer tube, institute The other end for stating rubber hose is bonded along its circumferential inner wall with inner tube.
3. a kind of integrated pump station according to claim 2, it is characterised in that: the outer tube, inner tube are by self-lubricating work Engineering plastics are made.
4. a kind of integrated pump station according to claim 2, it is characterised in that: the lifting device includes being set to maintenance to put down Under platform can the mounting base of oscilaltion setting and the hydraulic device of control mounting base lifting, the coupling device is fixed at In mounting base, the coupling device is equipped with guide rail, and the front sewage disposal pump is dropped to by guide rail to be connect with coupling device, described Proof submersible sand discharging pump is equipped with lifting rod.
5. a kind of integrated pump station according to claim 4, it is characterised in that: the outer tube passes through inspection platform and fixation It is mounted on inspection platform, limit plate is equipped between the inspection platform and mounting base, said inner tube is actively threaded through limit On plate.
6. a kind of integrated pump station according to claim 1, it is characterised in that: water inlet line is equipped with crush type grid.
7. a kind of integrated pump station according to claim 1, it is characterised in that: be equipped with ventilation above the pumping plant ontology Hole.
CN201910600146.2A 2019-07-04 2019-07-04 Integrated pump station Pending CN110219362A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910600146.2A CN110219362A (en) 2019-07-04 2019-07-04 Integrated pump station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910600146.2A CN110219362A (en) 2019-07-04 2019-07-04 Integrated pump station

Publications (1)

Publication Number Publication Date
CN110219362A true CN110219362A (en) 2019-09-10

Family

ID=67812906

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910600146.2A Pending CN110219362A (en) 2019-07-04 2019-07-04 Integrated pump station

Country Status (1)

Country Link
CN (1) CN110219362A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112999766A (en) * 2021-04-07 2021-06-22 北京威泽姆环保科技有限公司 Poisonous and harmful gas removing device for integrated pump station
RU221766U1 (en) * 2023-10-09 2023-11-22 Павел Олегович Нечаев SEWAGE PUMPING STATION

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4919343A (en) * 1989-09-25 1990-04-24 Environment/One Corporation Anti-flooding sewage grinder pump liquid level control system in separately mounted canister
CN105401651A (en) * 2015-12-29 2016-03-16 扬州大学 Double-tube type integrated pump station
CN105421578A (en) * 2015-12-29 2016-03-23 扬州大学 Self-cleaning device adopting lifting pull rods for bottom of prefabricated pumping station
CN105464204A (en) * 2015-12-29 2016-04-06 扬州大学 Integrated pump station with hydraulically adjustable bottom
CN205171478U (en) * 2015-11-24 2016-04-20 无锡德林海藻水分离技术发展有限公司 Work platform on water is salvaged to portable blue alga
CN205369515U (en) * 2015-12-29 2016-07-06 扬州大学 Integration pump station with adjustable bottom hydraulic pressure
CN207392411U (en) * 2017-09-25 2018-05-22 成都威茨泵业有限公司 The prevention waterlogging prefabricated pumping plant of integrated sewage water
WO2018102940A1 (en) * 2016-12-05 2018-06-14 王彩霞 Smart lift pump station provided with power generator
CN208518060U (en) * 2018-07-03 2019-02-19 中国建筑第八工程局有限公司 Convenient for cleaning the integrated pump station of bottom
CN210507754U (en) * 2019-07-04 2020-05-12 福建省禄源环保科技有限公司 Integrated pump station

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4919343A (en) * 1989-09-25 1990-04-24 Environment/One Corporation Anti-flooding sewage grinder pump liquid level control system in separately mounted canister
CN205171478U (en) * 2015-11-24 2016-04-20 无锡德林海藻水分离技术发展有限公司 Work platform on water is salvaged to portable blue alga
CN105401651A (en) * 2015-12-29 2016-03-16 扬州大学 Double-tube type integrated pump station
CN105421578A (en) * 2015-12-29 2016-03-23 扬州大学 Self-cleaning device adopting lifting pull rods for bottom of prefabricated pumping station
CN105464204A (en) * 2015-12-29 2016-04-06 扬州大学 Integrated pump station with hydraulically adjustable bottom
CN205369515U (en) * 2015-12-29 2016-07-06 扬州大学 Integration pump station with adjustable bottom hydraulic pressure
WO2018102940A1 (en) * 2016-12-05 2018-06-14 王彩霞 Smart lift pump station provided with power generator
CN207392411U (en) * 2017-09-25 2018-05-22 成都威茨泵业有限公司 The prevention waterlogging prefabricated pumping plant of integrated sewage water
CN208518060U (en) * 2018-07-03 2019-02-19 中国建筑第八工程局有限公司 Convenient for cleaning the integrated pump station of bottom
CN210507754U (en) * 2019-07-04 2020-05-12 福建省禄源环保科技有限公司 Integrated pump station

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112999766A (en) * 2021-04-07 2021-06-22 北京威泽姆环保科技有限公司 Poisonous and harmful gas removing device for integrated pump station
CN112999766B (en) * 2021-04-07 2022-10-14 北京威泽姆环保科技有限公司 Poisonous and harmful gas removing device for integrated pump station
RU221766U1 (en) * 2023-10-09 2023-11-22 Павел Олегович Нечаев SEWAGE PUMPING STATION

Similar Documents

Publication Publication Date Title
CN106013408B (en) A kind of prefabricated pumping plant of automatic discharge integral intelligent
WO2019085186A1 (en) System having detention tank and in-line treatment tank
CN208441217U (en) Automatically integrated prefabricated pumping plant is monitored
CN105401651B (en) A kind of double-cylinder type integrated pump station
CN105421578B (en) A kind of prefabricated pumping plant bottom pull bar lifts cleaning apparatus for self
CN110219362A (en) Integrated pump station
CN109944313A (en) A kind of rural area outdoor vacuum drainage system system
CN205369515U (en) Integration pump station with adjustable bottom hydraulic pressure
CN201485959U (en) On-line vacuum drainage system
CN105464204B (en) A kind of bottom hydraulically adjustable integrated pump station
CN205577091U (en) Prefabricated pump station of integration
CN205348378U (en) Prefabricated pump station bottom pull rod goes up and down from cleaning device
CN210507754U (en) Integrated pump station
CN201678510U (en) Convenient maintenance high-efficiency buried sewage processing apparatus
CN204778879U (en) Prefabricated pump station of solid -liquid cellular -type
CN209397698U (en) A kind of sewage lifter with backwashing function
CN205296343U (en) Be applied to waste fitting discharging in workshop
CN219196226U (en) Prevent flowing backward vatch basin
CN108612178A (en) Automatically integrated prefabricated pumping plant is monitored
CN209259826U (en) A kind of waste water pretreatment system pipe arrangement
CN219326666U (en) Condensate water self-draining structure of microporous aeration disc
CN220098821U (en) Sedimentation tank drainage system
CN205348379U (en) Double -cylinder integration pump station
CN211462277U (en) Waterway filter
CN215759496U (en) Efficient drainage device for drainage engineering

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination