CN110155092A - A kind of floor of railway vehicle Auto-drainage structure - Google Patents
A kind of floor of railway vehicle Auto-drainage structure Download PDFInfo
- Publication number
- CN110155092A CN110155092A CN201910530546.0A CN201910530546A CN110155092A CN 110155092 A CN110155092 A CN 110155092A CN 201910530546 A CN201910530546 A CN 201910530546A CN 110155092 A CN110155092 A CN 110155092A
- Authority
- CN
- China
- Prior art keywords
- floor
- railway vehicle
- kitchen
- toilet
- interlayer
- 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
Links
- 239000011229 interlayer Substances 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 12
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 description 3
- 238000012279 drainage procedure Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 2
- 206010021036 Hyponatraemia Diseases 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000004540 pour-on Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D17/00—Construction details of vehicle bodies
- B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
- B61D17/10—Floors
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/0407—Floor drains for indoor use
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
- F16K31/20—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Wood Science & Technology (AREA)
- Sanitary Device For Flush Toilet (AREA)
- Vehicle Waterproofing, Decoration, And Sanitation Devices (AREA)
Abstract
A kind of floor of railway vehicle automatic drain system, including vehicle floor ontology, draining groove seat is equipped in interlayer, it drains groove seat bottom and is equipped with drainage hole, it is characterized by: toilet and kitchen upper floor aperture, floating floor drain is arranged in through hole, the bottom of floating floor drain is protruded into draining groove seat, it drains groove seat bottom drain holes and connects discharge pipe line, discharge pipe line is placed in equipment compartment, discharge pipe line end is equipped with electrical ball valve, liquid level sensor is equipped in interlayer, liquid level sensor connects control unit, control unit connects the inlet water solenoid valve on velocity sensor and water supply pipe on vehicle；By the way that floating floor drain is arranged in toilet and kitchen, and it is equipped with liquid level sensor in interlayer, inlet water solenoid valve and electrical ball valve is controlled by control unit, while controlling closing water supply pipe;It can effectively solve the problems, such as toilet and kitchen floor ponding, reduce artificial drainage workload, improve the sanitary condition in toilet and kitchen.
Description
Technical field
The present invention relates to rail vehicle discharge structures, are specifically related to a kind of floor of railway vehicle automatic drain system.
Background technique
Currently, China's motor train unit train is fully sealed, chassis setting to guarantee vehicle leakproofness outside interlayer and vehicle
Manual draining valve needs to be manually operated exclusion ponding.When the leak of in-vehicle device part or condensation dilutional hyponatremia when be unable to Auto-drainage and
Occupant can not discover, and different lines under floor and termination rack is be easy to cause to intake, and equipment through a long time is caused immersed with ground connection risk
Equipment fault, train are unable to operate normally.In addition, completely sealed structure is taken in EMU toilet, kitchen floor region, when defending
Between life, in kitchen when the water of floor, can not Auto-drainage, ponding, i.e. waste of manpower can only be cleared up manually by crew member, and not
Health.
Summary of the invention
In response to the problems existing in the prior art, the purpose of the present invention is to provide a kind of floor of railway vehicle Auto-drainage systems
System, realization EMU bathroom floor, kitchen floor and the self-draining purpose of car body floor interlayer, solution bathroom floor,
Kitchen floor and car body floor interlayer ponding problem reduce electrical equipment immersion and ground connection risk in interlayer and termination rack,
It reduces artificial drainage workload and the activity duration is examined in library.
To achieve the above object, the present invention provides a kind of floor of railway vehicle automatic drain system, including vehicle floor sheet
Body, draining groove seat is equipped in interlayer, and draining groove seat bottom is equipped with drainage hole, it is characterised in that: toilet and kitchen upper layer
Floating floor drain is arranged in floor openings, through hole, and the bottom of floating floor drain is protruded into draining groove seat, and draining groove seat bottom drain holes connect
Run in water lines, discharge pipe line is placed in equipment compartment, and discharge pipe line end is equipped with electrical ball valve, is equipped with liquid level in interlayer and is passed
Sensor, liquid level sensor connect control unit, and control unit connects the water inlet electricity on velocity sensor and water supply pipe on vehicle
Magnet valve；By the way that floating floor drain is arranged in toilet and kitchen, and liquid level sensor is equipped in interlayer, it is single by control
Member control inlet water solenoid valve and electrical ball valve, the ponding of the water and interlayer that make toilet and kitchen floor are discharged in time, together
When control close water supply pipe.
The floating floor drain is the inner cylinder that the upper half connects a bottom opening in outer barrel, and inner cylinder and the closing of outer barrel inner wall are solid
Fixed connection, inner cylinder upper port are equipped with filter screen, and filter screen is equipped with centre bore, and a gasket is fixed in floating block upper end, on gasket
A connecting rod is fixed, connecting rod protrudes into inner cylinder and stretches out from the centre bore of filter screen, and outer barrel bottom is equipped with drainage hole.When vehicle operates normally
When, the water of toilet or kitchen floor is discharged in the draining groove seat in interlayer via the drainage hole of outer barrel bottom, and realization is defended
Between life and kitchen floor drain function.When ponding reach a certain height in draining groove seat, and fails timely automated draining, float
Block is driven connecting rod to float by ponding buoyancy, and gasket shuts inner cylinder discharge outlet at this time, and toilet or kitchen stop draining, together
When prompt crew member's ponding do not arrange, avoid toilet and kitchen floor continue drain and cause interlayer interior cabling by ponding
It impregnates.
The floating floor drain connecting rod is equipped with warning-sign.
The warning-sign lower part is equipped with magnetite, and magnetite is equal to gasket at a distance from inner cylinder bottom at a distance from filter screen,
Gasket is improved to the closed performance of inner cylinder.
Described control unit sets electrical ball valve when running velocity is lower than 5Km/h and opens draining.
Filter cartridge is set before the discharge pipe line electrical ball valve, it can be by sundries such as cold-proof materials in car body floor interlayer
Filtering.
Inspection door is set on the filter cartridge, facilitates periodic cleaning strainer, guarantees that system operates normally.
Described control unit is the detection that STM32F103RET6 chip is constituted and draining control module, directly using existing
Toilet and kitchen control unit realize, need to only be write in the control unit in toilet or kitchen according to the framework of entity hardware
Enter simple detection and drainage procedure.
Good effect of the present invention: motor train unit floor automatic drain system can be real in the case where not influencing vehicle air-tightness
Existing interlayer, the automatic drainage function of toilet and kitchen floor and leak auto-alarm function.Compared to current EMU
The manual drainage device of car body floor interlayer can effectively prevent the submerged car accident caused by accumulating because of equipment leak or condensed water,
Wiring and equipment under vehicle reduce the operation of artificial drainage because of electric leakage and ground fault caused by soaking in reduction car body floor interlayer
Amount and activity duration；Toilet and kitchen floor floating floor drain, can be effective compared to the closed floor structure of current EMU
It solves the problems, such as toilet and kitchen floor ponding, reduces artificial drainage workload, improve the sanitary condition in toilet and kitchen.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is floating drain structure schematic diagram of the present invention.
In figure: floating floor drain 1, outer barrel 1-1, floating block 1-2, gasket 1-3, magnetite 1-4, filter screen 1-5, warning-sign 1-6,
Connecting rod 1-7, inner cylinder 1-8, drainage hole 1-9, draining groove seat 2, filter cartridge 3, inspection door 3-1, electrical ball valve 4, liquid level sensor 5,
Control unit 6, vehicle floor interlayer 7, inlet water solenoid valve 8, velocity sensor 9.
Specific embodiment
Referring to Fig.1, Fig. 2, the specific embodiment of the invention are equipped in vehicle floor interlayer 7 in toilet, kitchen 11
Groove seat 2 is drained, draining groove seat bottom is equipped with drainage hole, and drainage hole connects discharge pipe line 12, and discharge pipe line is placed in equipment compartment 10,
Liquid level sensor 5 is equipped in interlayer, discharge pipe line end is equipped with electrical ball valve 4, and liquid level sensor 5 connects control unit 6,
Control unit connects velocity sensor 9 and inlet water solenoid valve 8 on vehicle；Toilet and kitchen upper floor aperture, through hole setting
Floating floor drain 1, the bottom of floating floor drain are protruded into draining groove seat 2, for toilet and kitchen floor draining and interlayer row
The alarm of sink seat ponding.The floating floor drain connecting rod is equipped with warning-sign 1-6, and warning-sign lower part is equipped with magnetite 1-4, magnetite and mistake
The distance of strainer is equal to gasket at a distance from inner cylinder bottom, and when gasket closes inner cylinder, magnetite is sucked with filter screen, mentions
The leakproofness of the highly dense internal cylinder of packing.Electrical ball valve is beaten when control unit setting running velocity is lower than 5 kilometers/hour
Begin to rehearse water.Described control unit 6 is the detection that STM32F103RET6 chip is constituted and draining control module, directly using existing
Toilet and kitchen control unit realize, need to only be write in the control unit in toilet or kitchen according to the framework of entity hardware
Enter simple detection and drainage procedure.Filter cartridge 3 is set before discharge pipe line electrical ball valve, it can be by car body floor interlayer
In the filtering foreigns such as cold-proof materials.Inspection door 3-1 is set on filter cartridge, facilitates periodic cleaning strainer, guarantees that system operates normally.
Referring to Fig. 2, the floating floor drain is the inner cylinder 1-8 that the upper half connects a bottom opening in outer barrel 1-1, inner cylinder with
The closing of outer barrel inner wall is fixedly connected, and inner cylinder upper port is equipped with filter screen 1-5, and filter screen is equipped with centre bore, and the upper end floating block 1-2 is solid
Determine a gasket 1-3, a connecting rod 1-7 is fixed on gasket, connecting rod protrudes into inner cylinder and stretches out from the centre bore of filter screen, plays guiding and makees
With the bottom outer barrel 1-1 is equipped with drainage hole 1-9.When vehicle operates normally, the water of toilet or kitchen floor is via outer barrel bottom
Drainage hole be discharged in the draining groove seat in interlayer, realize toilet and kitchen floor drain function.When in draining groove seat
Ponding reach a certain height, and when failing timely automated draining, and floating block is driven connecting rod to float by ponding buoyancy, seals at this time
Pad shuts inner cylinder discharge outlet, and toilet or kitchen stop draining, while crew member's ponding being prompted not arrange, avoid toilet and
Kitchen floor continues to drain and interlayer interior cabling is caused to be impregnated by ponding.
When the vehicle is running, electrical ball valve 4 is in normally off, guarantees the sealing outside interlayer and vehicle.When there is equipment
When leak or condensed water generate, water can flow to draining groove seat, and liquid level sensor 5 can be triggered when ponding is excessive and issues alarm signal
Number.Control unit 6 can close inlet water solenoid valve after receiving water-level alarm signal, prevent leakage accident from continuing to occur, pass through simultaneously
5Km speed signal judges vehicle-state, if judging, running velocity lower than 5Km/h, controls the opening of electrical ball valve 4, realizes
Automatic drainage function.Vehicle is in low speed or dead ship condition at this time, and drainage procedure will not cause pressure wave impact, not influence vehicle
The closed operation of high speed and traveller's environment.To prevent 4 clamping stagnation of electrical ball valve and blocking, filter cartridge is set among discharge pipe line
3, can the filtering foreigns such as cold-proof materials in car body floor interlayer, filter cartridge 3 be arranged inspection door, facilitate periodic cleaning strainer,
Guarantee system operates normally.
When vehicle operates normally, floating ball falls in floor drain bottom, and the water of toilet or kitchen floor can be via floor drain bottom
Drainage hole be discharged in the draining groove seat in interlayer, realize toilet and kitchen floor drain function.When in draining groove seat
Ponding reach a certain height, and when failing timely automated draining, and floating ball is driven connecting rod to float by ponding buoyancy, reaches certain
Filter screen is sucked in magnetite after height, and gasket shuts discharge outlet at this time, and floating floor drain is automatically closed, and toilet or kitchen stop
Draining, protects interlayer interior cabling not impregnated by ponding.Warning-sign rising simultaneously reaches floor or more, prompts crew member
There is ponding not arrange in interlayer, should stop continuing to pour on floor and clears up ponding manually.To prevent the sundries on floor
Discharge outlet is blocked, filter screen is set.
Claims (8)
1. draining groove seat, row are equipped with a kind of floor of railway vehicle automatic drain system, including vehicle floor ontology, in interlayer
Sink seat bottom is equipped with drainage hole, it is characterised in that: and floating floor drain is arranged in toilet and kitchen upper floor aperture, through hole,
The bottom of floating floor drain is protruded into draining groove seat, and draining groove seat bottom drain holes connect discharge pipe line, and discharge pipe line is placed in equipment
In storehouse, discharge pipe line end is equipped with electrical ball valve, and liquid level sensor is equipped in interlayer, and liquid level sensor connection control is single
Member, control unit connect the inlet water solenoid valve on velocity sensor and water supply pipe on vehicle.
2. a kind of floor of railway vehicle automatic drain system according to claim 1, it is characterised in that: the floating floor drain
It is the inner cylinder that the upper half connects a bottom opening in outer barrel, inner cylinder is fixedly connected with the closing of outer barrel inner wall, and inner cylinder upper port is set
There is filter screen, filter screen is equipped with centre bore, and floating block upper end fixes a gasket, a connecting rod is fixed on gasket, and connecting rod protrudes into
Inner cylinder is stretched out from the centre bore of filter screen, and outer barrel bottom is equipped with drainage hole.
3. a kind of floor of railway vehicle automatic drain system according to claim 2, it is characterised in that: the floating floor drain
Connecting rod is equipped with warning-sign.
4. a kind of floor of railway vehicle automatic drain system according to claim 3, it is characterised in that: under the warning-sign
Portion is equipped with magnetite, and magnetite is equal to gasket at a distance from inner cylinder bottom at a distance from filter screen.
5. a kind of floor of railway vehicle automatic drain system according to claim 1, it is characterised in that: described control unit
It sets electrical ball valve when running velocity is lower than 5Km/h and opens draining.
6. a kind of floor of railway vehicle automatic drain system according to claim 1, it is characterised in that: the drainpipe
Filter cartridge is set before the electrical ball valve of road.
7. a kind of floor of railway vehicle automatic drain system according to claim 6, it is characterised in that: the filter cartridge
Upper setting inspection door.
8. a kind of floor of railway vehicle automatic drain system according to claim 1, it is characterised in that: the control list
Member is the detection that STM32F103RET6 chip is constituted and draining control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910530546.0A CN110155092A (en) | 2019-06-19 | 2019-06-19 | A kind of floor of railway vehicle Auto-drainage structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910530546.0A CN110155092A (en) | 2019-06-19 | 2019-06-19 | A kind of floor of railway vehicle Auto-drainage structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110155092A true CN110155092A (en) | 2019-08-23 |
Family
ID=67626001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910530546.0A Pending CN110155092A (en) | 2019-06-19 | 2019-06-19 | A kind of floor of railway vehicle Auto-drainage structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110155092A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3133585A1 (en) * | 2022-03-21 | 2023-09-22 | Speedinnov | Water-draining vehicle car and related method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2592579Y (en) * | 2002-12-16 | 2003-12-17 | 青岛马士基集装箱工业有限公司 | Container with automatic draining and blocking device of aluminium internal pipe |
| KR200405437Y1 (en) * | 2005-10-14 | 2006-01-11 | 박영주 | Rayer roof and floor drain system |
| DE102006004225A1 (en) * | 2006-01-30 | 2007-08-30 | Airbus Deutschland Gmbh | Shower drain for e.g. passenger airplane, has housing with shower tub outlet for insertion into recess in tub and into floor adapter that connects outlet with component designed for attachment to sewage water pipe |
| CN201923155U (en) * | 2010-11-23 | 2011-08-10 | 南车青岛四方机车车辆股份有限公司 | Wastewater discharge and ventilation device for high-speed train |
| CN203580835U (en) * | 2013-11-13 | 2014-05-07 | 马国山 | Mobile toilet for locomotives and vehicles |
| CN204081038U (en) * | 2014-06-26 | 2015-01-07 | 北京中建圣大环境科技发展有限公司 | A kind of float ball type floor drain |
| CN107235048A (en) * | 2017-06-27 | 2017-10-10 | 中车青岛四方机车车辆股份有限公司 | Floor and train for toilet |
| CN208718112U (en) * | 2018-08-10 | 2019-04-09 | 张家仕 | Novel anti-ponding structure based on toilet geothermal heating ground surface finishing |
| CN210653098U (en) * | 2019-06-19 | 2020-06-02 | 中车长春轨道客车股份有限公司 | Automatic drainage structure for railway vehicle floor |
-
2019
- 2019-06-19 CN CN201910530546.0A patent/CN110155092A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2592579Y (en) * | 2002-12-16 | 2003-12-17 | 青岛马士基集装箱工业有限公司 | Container with automatic draining and blocking device of aluminium internal pipe |
| KR200405437Y1 (en) * | 2005-10-14 | 2006-01-11 | 박영주 | Rayer roof and floor drain system |
| DE102006004225A1 (en) * | 2006-01-30 | 2007-08-30 | Airbus Deutschland Gmbh | Shower drain for e.g. passenger airplane, has housing with shower tub outlet for insertion into recess in tub and into floor adapter that connects outlet with component designed for attachment to sewage water pipe |
| CN201923155U (en) * | 2010-11-23 | 2011-08-10 | 南车青岛四方机车车辆股份有限公司 | Wastewater discharge and ventilation device for high-speed train |
| CN203580835U (en) * | 2013-11-13 | 2014-05-07 | 马国山 | Mobile toilet for locomotives and vehicles |
| CN204081038U (en) * | 2014-06-26 | 2015-01-07 | 北京中建圣大环境科技发展有限公司 | A kind of float ball type floor drain |
| CN107235048A (en) * | 2017-06-27 | 2017-10-10 | 中车青岛四方机车车辆股份有限公司 | Floor and train for toilet |
| CN208718112U (en) * | 2018-08-10 | 2019-04-09 | 张家仕 | Novel anti-ponding structure based on toilet geothermal heating ground surface finishing |
| CN210653098U (en) * | 2019-06-19 | 2020-06-02 | 中车长春轨道客车股份有限公司 | Automatic drainage structure for railway vehicle floor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3133585A1 (en) * | 2022-03-21 | 2023-09-22 | Speedinnov | Water-draining vehicle car and related method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106049648B (en) | A kind of floor drain | |
| KR20130040572A (en) | A multi-cage type ballast water filter equipment auto-controlling successively back-washing and method thereof | |
| KR20130040613A (en) | A multi-cage type ballast water filter equipment preventing a formation of back-pressure | |
| CN109209707A (en) | Fuel filter and automatic draining method with automatic draining function | |
| CN110155092A (en) | A kind of floor of railway vehicle Auto-drainage structure | |
| CN210653098U (en) | Automatic drainage structure for railway vehicle floor | |
| KR101464481B1 (en) | Auto discharge equipment of vacuum toilet system | |
| CN108562728A (en) | Waste liquid discharge device, blood coagulation analyzer and discharge method with waste liquid discharge device | |
| CN2855857Y (en) | Fixation type vacuum device for discharging dirt | |
| CN208041595U (en) | A kind of Free Float Type Steam Trap | |
| KR20130040046A (en) | A multi-cage type ballast water filter equipment improving durability of back-washing line | |
| KR20130042357A (en) | A ballast water filter equipment preventing a formation of back-pressure | |
| CN108842900A (en) | Intelligence water filling（Moisturizing）Floor drain | |
| CN214607517U (en) | Vacuum sanitary system for railway vehicle | |
| CN110696860B (en) | Sewage discharge system and use method of self-sewage discharge and self-cleaning | |
| CN205557693U (en) | Prevent that pipeline freezes water tank | |
| CN206457916U (en) | Draining deodorization manifold | |
| CN208830450U (en) | Intelligence water filling floor drain | |
| CN218877241U (en) | Automatic drainage system for kitchen equipment of motor train unit | |
| RU2481984C2 (en) | Railway vehicle sanitation equipment system | |
| CN214050756U (en) | Stainless steel tank leakage test belt cleaning device | |
| CN107869168A (en) | Freeze the antifreeze filter-type drainage arrangement in storehouse | |
| CN217425129U (en) | Concrete impermeability detection equipment | |
| CN107687199A (en) | A kind of double-layer seal floor drain apparatus | |
| CN211285893U (en) | Clean district prevents flowing backward drainage device |
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 |