CN110397618A - A kind of protective device and guard method of water pump - Google Patents
A kind of protective device and guard method of water pump Download PDFInfo
- Publication number
- CN110397618A CN110397618A CN201910563642.5A CN201910563642A CN110397618A CN 110397618 A CN110397618 A CN 110397618A CN 201910563642 A CN201910563642 A CN 201910563642A CN 110397618 A CN110397618 A CN 110397618A
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- Prior art keywords
- siphon
- pipe
- area
- water
- water pump
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 91
- 230000001681 protective effect Effects 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims description 14
- 230000004888 barrier function Effects 0.000 claims abstract description 20
- 239000010865 sewage Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 26
- 238000005086 pumping Methods 0.000 claims description 25
- 238000004891 communication Methods 0.000 claims description 23
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 3
- 230000004308 accommodation Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000003786 synthesis reaction Methods 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 abstract description 5
- 238000004140 cleaning Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000004804 winding Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 11
- 238000007667 floating Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F10/00—Siphons
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The invention discloses a kind of protective devices of water pump; including structures; structures are equipped with water inlet and pump hole; the pump hole is for installing submersible sewage pump, which is characterized in that further include: barrier portion; the barrier portion is set in the structures; it is respectively the firstth area and the secondth area that the inside of the structures, which is divided into two isolated areas, and the water inlet is set to firstth area, and the pump hole is located in secondth area；Siphon pipe, the siphon pipe are connected to firstth area and the secondth area across the barrier portion is set, for the water siphon in firstth area to be entered secondth area.The present invention can prevent water pump winding blocking, and rubbish cleaning and maintenance is convenient.
Description
Technical field
The present invention relates to technical field of drainage, and in particular to a kind of protective device and guard method of water pump.
Background technique
Submersible sewage pump is for sewage effluent, and submersible sewage pump is generally used in storage pond or shunting well, is used for storage pond
Or the sewage lifting discharge storage pond or shunting well of shunting well.
Since the Sewage Environment in storage pond or shunting well is more severe, submersible sewage pump is easy to be blocked by sundries or floating material,
Cause pump that can not work or the problems such as motor is burnt.After submersible sewage pump damage, need to take out in the water in storage pond or shunting well
Submersible sewage pump is taken out after dry and repairs and replaces, the artificial people for emptying a storage pond is originally higher.Therefore, it is anti-that submersible sewage pump is solved at present
The method of blocking is that garbage grille is arranged before pump along water (flow) direction and crushes grid, if garbage grille selects electronic grid, at
This height, installation is complicated, if selecting simple grid, needs artificial regularly cleaning and maintenance, the task of cleaning is heavy, maintenance cost
It is higher；If selecting crushed rack bar screen, higher cost is installed also cumbersome.
So being badly in need of a kind of at low cost, easy to maintain, the antiwind technology of water pump easy for installation both can solve twining for water pump
The problem of around blocking, the safety of water pump is protected, and can be convenient and efficiently carry out cleaning and maintenance.
Summary of the invention
The purpose of the invention is to overcome the shortcomings of above-mentioned background technique, the protective device and protection of a kind of water pump are provided
Method prevents water pump winding blocking, convenient for installation and maintenance.
The present invention provides a kind of protective device of water pump, including structures, and structures are equipped with water inlet and pump hole, the pump
Hole is for installing submersible sewage pump, further includes:
Barrier portion, the barrier portion are set in the structures, and the inside of the structures is divided into two isolated areas
Respectively the firstth area and the secondth area, the water inlet are set to firstth area, and the pump hole is located in secondth area；
Siphon pipe, the siphon pipe are connected to firstth area and the secondth area across the barrier portion is set, and are used for described first
Water siphon in area enters secondth area.
Based on the above technical solution, the siphon pipe includes siphon inlet pipe, communication chamber and siphon outlet pipe, institute
It states communication chamber and is connected to the siphon inlet pipe and siphon outlet pipe, and the siphon inlet pipe is connected to firstth area, it is described
Siphon outlet pipe is connected to the secondth area, and communication chamber is located at the highest position of the siphon pipe.
Based on the above technical solution, debris retaining filter device, the debris retaining filter device are equipped in the communication chamber
Between the outlet of the siphon inlet pipe and the import of the siphon outlet pipe.
Based on the above technical solution, the debris retaining filter device includes sliding rail and is slidably mounted on the sliding rail
Net frame structure, the influent side of the net frame structure passes through the siphon close to the outlet of the siphon inlet pipe, for intercepting
Rubbish in the water of water inlet pipe outflow.
Based on the above technical solution, the communication chamber is set to the top of barrier portion, and the top of the barrier portion
Overflow port is equipped between the bottom of the communication chamber, firstth area is connected to secondth area by the overflow port.
Based on the above technical solution, the structures are the receiving skies synthesized by bottom, side wall and top
Between, the water inlet is set on the side wall, and firstth area is connected to the top in secondth area.
It based on the above technical solution, further include vaccum-pumping equipment, the vaccum-pumping equipment and the siphon pipe connect
It is logical, it is vacuumized for the siphon pipe.
Based on the above technical solution, which further includes control system, the control system include liquidometer and
Controller, the liquidometer are used to monitor the liquid level in the siphon pipe of firstth area and/or the second area side,
The controller is connected respectively at the vaccum-pumping equipment with the liquidometer, for being monitored according to the liquidometer
The liquid level height value arrived controls the vaccum-pumping equipment movement.
Based on the above technical solution, a kind of guard method of water pump uses the protective device of above-mentioned water pump, tool
Body method is as follows:
It sets the starting level threshold of vaccum-pumping equipment and closes level threshold,
Liquidometer real-time monitoring is located at the liquid level height value in the siphon pipe in firstth area and/or the secondth area, works as liquid
Position height value reaches starting level threshold, then the vaccum-pumping equipment starting vacuumizes the siphon pipe, when liquid level reaches
To level threshold is closed, then the vaccum-pumping equipment, which is closed, stops vacuumizing the siphon pipe, and the water in the firstth area passes through institute
It states siphon pipe and sucks the secondth area.
Compared with prior art, advantages of the present invention is as follows:
(1) a kind of protective device of water pump of the present invention be pool structure is divided into two regions be respectively the firstth area and
Secondth area, water pump are mounted on the secondth area, and water inlet is connected to the firstth area, and two regions are connected to by siphon pipe, use siphon pipe fitting
Water siphon in firstth area enters the secondth area, and the liquid level in the secondth area forms liquid level difference lower than the liquid level in the firstth area, due to siphon
The water intake end of pipe does not have upstream face hereinafter, the floating material in structures can be filtered out, avoid floating material rubbish in the firstth area into
Enter the secondth area, effectively prevent water pump to block because floating material is wound, structure is simple, easy to operate.
(2) siphon pipe in a kind of protective device of water pump of the present invention includes siphon inlet pipe, communicating pipe and siphon water outlet
Pipe can be the equipment of screen frame one kind in connection tube portion setting debris retaining filter device, by what is entered by siphon pipe water inlet pipe
Rubbish is collected by the interception of debris retaining filter device, is guaranteed that the water for entering the secondth area does not contain rubbish, is constructed since communicating pipe is close
At the top position of object, easy cleaning replacement.
(3) siphon pipe in a kind of protective device of water pump of the present invention further includes that vacuum evacuation device can be a kind of for vacuum pump
Equipment siphon pipe is vacuumized by the vaccum-pumping equipment of setting, siphon pipe when liquid level difference is not enough to form siphonic effect
Interior formation full-section pipe-flow, siphonic effect generates, applied widely.
(4) a kind of protective device of water pump of the present invention is provided with overflowing for the firstth area of connection and the secondth area at the top of barrier portion
Head piece, overflow port exist as emergency set, can enter from overflow port overflow after the water level in the firstth area is increased to overflow port
Secondth area, horizontal grate further stop rubbish to enter the secondth area, protect water pump.
(5) a kind of guard method of water pump of the present invention, controller are vacuumized according to the liquid level height value control in siphon pipe
Opening of device, closes vaccum-pumping equipment after forming siphonic effect, and high degree of automation does not need manual control, effectively avoids
Water containing rubbish enters in secondth area, under the premise of not influencing pump working, protects water pump.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention 1.
Fig. 2 is the partial enlarged view in Fig. 1 at A.
Fig. 3 is the top view of the embodiment of the present invention 1.
Appended drawing reference: structures 1, barrier portion 10, the first area 11, the second area 12, water inlet 13, pump hole 14, overflow port 15,
Siphon pipe 2, siphon inlet pipe 20, communication chamber 21, siphon outlet pipe 22, cover board 23, vacuum hole 24, vaccum-pumping equipment 4, vacuum pump
41 and vacuum tube 40.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is described in further detail.
Embodiment 1
Shown in referring to figure 1, figure 2 and figure 3, the present invention provides a kind of protective device of water pump, including structures 1 and siphon pipe
2, structures 1 are equipped with water inlet 13 and pump hole 14, and for installing submersible sewage pump, the structures 1 in the present embodiment are coagulation in pump hole 14
Storage pond or shunting well made of soil structure, structures 1 are the accommodation spaces synthesized by bottom, side wall and top, water inlet
Mouth is set on side wall；The bottom that barrier portion 10 is set to structures 1, the side wall of two sides and structures 1 are provided in structures 1
It is connected, it is respectively the first area 11 and the second area 12 that the inside of structures 1, which is divided into two isolated areas, and water inlet 13 is set to first
Area 11, pump hole 14 are located in the second area 12, and pump and cheat at the low other positions of structures bottom level height of position
Structures bottom level height, barrier portion 10 are equipped with overflow port, the first area 11 and the second area 12 and are connected to by overflow port 15, In
Under emergency, the water in the first area 11 can enter the second area 12 by overflow port, pass through the water pump pump drainage in the second area 12；Rainbow
Suction pipe 2 is connected to the first area 11 and the second area 12 across barrier portion 10 is set, for the water siphon in the first area 11 to be entered the second area 12,
It can produce siphonic effect when the liquid level in the first area 11 is higher than the liquid level in the second area 12, it will by siphon pipe 2
Water siphon in first area 11 enters in the second area 12, since siphon pipe 2 is located at the water surface hereinafter, the floating material in the first area 11 floats
It floats on the surface, the second area 12 can not be entered by siphon pipe 2, the water in the second area 12 is cleaner, without containing causing water pump to become silted up
Stifled substance, to play the purpose of protection water pump.
Further, in this embodiment siphon pipe 2 include siphon inlet pipe 20, communication chamber 21 and siphon outlet pipe 22,
Communication chamber 21 is connected to siphon inlet pipe 20 and siphon outlet pipe 22, and siphon inlet pipe 20 is connected to the first area 11, siphon water outlet
Pipe 22 is connected to the second area 12, and communication chamber 21 is located at the highest position of siphon pipe 2, and debris retaining filtering dress is equipped in communication chamber 21
3 are set, debris retaining filter device 3 is set between the outlet of siphon inlet pipe 20 and the import of siphon outlet pipe 22.In the present embodiment
The top of communication chamber 21 is the top of structures 1, and cover board 23 is provided with above communication chamber 21, and communication chamber 21 is set to barrier portion 10
Top, and between the top of barrier portion 10 and the bottom of communication chamber 21 be equipped with overflow port 15.Debris retaining filtering in the present embodiment
Device 3 includes the string bag or net frame structure of sliding rail and installation on the slide rail, and the segmentation warp intersected anyhow is provided on net frame structure
Network is partitioned into several mesh-structured, the rubbish of suspended matter in water, floating material one kind can be intercepted, since the setting of communication chamber 21 exists
Close to the position at top, the rubbish in the string bag or net frame structure can both have been cleared up by the opening of cover board 23, facilitated easy to operate, and set
Setting the string bag or net frame structure can further stop rubbish to enter the second area 12, protect water pump.As deformation, in the present embodiment
Debris retaining filter device 3 also can be set in the water inlet close to siphon inlet pipe 20, can effectively prevent siphon inlet pipe 20
Blocking guarantees that siphon pipe 2 works normally.
Further, the protecting device for water pump of the present embodiment further includes vaccum-pumping equipment 4, vaccum-pumping equipment 4 and siphon pipe 2
Connection, vacuumizes for siphon pipe 2, and vaccum-pumping equipment 4 includes vacuum pump 41 and vacuum tube 40, the cover board 23 at 21 top of communication chamber
Equipped with the vacuum hole 24 being connected with vacuum tube 40, when the liquid level difference only by the first area 11 and the second area 12 can not start siphon
It, can be by vacuum pump 41 to vacuumizing, under the effect of the pressure, siphon inlet pipe 21 and rainbow inside siphon pipe 2 when effect
The water level being sucked out in water pipe 22 is increased in siphon pipe form siphonic effect full of water, after siphonic effect generates, in the first area 11
Water continuously siphon enter the second area 12, then by be located at the second area 12 in water pump pump drainage.
Further, the protecting device for water pump of the present embodiment further includes control system, and control system includes liquidometer and control
Device processed, the liquid level that liquidometer is used to monitor in the siphon pipe of 12 side of the first area 11 and/or the secondth area monitor siphon
Liquid level height value in water inlet pipe 21 and siphon outlet pipe 22, controller are connected with liquidometer respectively at vaccum-pumping equipment 4, are used for
The liquid level height value control vaccum-pumping equipment 4 monitored according to liquidometer acts.Specifically, when the liquid level in siphon inlet pipe 21
Vacuum evacuation device can be started when reaching certain liquid level height value, after forming siphonic effect in siphon pipe, vacuum evacuation device is closed
It closes, by the siphonic effect formed, constantly enters the water siphon in the first area 11 in secondth area.
Embodiment 2
The present embodiment 2 provides a kind of guard method of water pump, using a kind of protective device of the water pump of embodiment 1, specific side
Method is as follows:
Set vaccum-pumping equipment 4 starting level threshold and close level threshold, liquidometer real-time monitoring be located at siphon into
Liquid level height value in water pipe 21 and/or siphon outlet pipe 21；
When liquid level height value reaches starting level threshold, then the red starting of paper vaccum-pumping equipment 4 of controller takes out siphon pipe true
Sky, when liquid level reaches closing level threshold, then controller control vaccum-pumping equipment 4, which is closed, stops vacuumizing siphon pipe,
It is full of water in siphon pipe 2, forms siphonic effect, constantly siphon enters the second area 12 to the water in the first area 11 by siphon pipe 2.
Those skilled in the art can carry out various modifications to the embodiment of the present invention and modification, if these modifications and change
For type within the scope of the claims in the present invention and its equivalent technologies, then these modifications and variations are also in protection scope of the present invention
Within.
The prior art that the content being not described in detail in specification is known to the skilled person.
Claims (9)
1. a kind of protective device of water pump, including structures (1), structures are equipped with water inlet (13) and pump hole (14), the pump
Hole (14) is for installing submersible sewage pump, which is characterized in that further include:
Barrier portion (10), the barrier portion (10) are set in the structures, and the inside of the structures (1) is divided into two solely
Vertical region is respectively the firstth area (11) and the secondth area (12), and the water inlet (13) is set to firstth area (11), the pump hole
(14) it is located in secondth area (12)；
Siphon pipe (2), the siphon pipe (2) are connected to firstth area (11) and the secondth area (12) across the barrier portion (10) are set,
For the water siphon in firstth area (11) to be entered secondth area (12).
2. a kind of protective device of water pump as described in claim 1, it is characterised in that: the siphon pipe (2) include siphon into
Water pipe (20), communication chamber (21) and siphon outlet pipe (22), the communication chamber (21) are connected to the siphon inlet pipe (20) and rainbow
It is sucked out water pipe (22), and the siphon inlet pipe (20) is connected to firstth area (11), the siphon outlet pipe (22) and the
2nd area (12) connection, and communication chamber (21) is located at the highest position of the siphon pipe (2).
3. a kind of protective device of water pump as claimed in claim 2, it is characterised in that: be equipped with debris retaining in the communication chamber (21)
Filter device (3), outlet and the siphon outlet pipe of the debris retaining filter device (3) set on the siphon inlet pipe (20)
(22) between import.
4. a kind of protective device of water pump as claimed in claim 3, it is characterised in that: the debris retaining filter device (3) includes
Sliding rail and the net frame structure being slidably mounted on the sliding rail, the influent side of the net frame structure is close to the siphon inlet pipe
(20) outlet, for intercepting the rubbish in the water by the siphon inlet pipe (20) outflow.
5. a kind of protective device of water pump as claimed in claim 2, it is characterised in that: the communication chamber (21) is set to barrier portion
(10) top, and overflow port (15) are equipped between the top of the barrier portion (10) and the bottom of the communication chamber (21), institute
It states the firstth area (11) and is connected to secondth area (12) by the overflow port (15).
6. a kind of protective device of water pump as described in claim 1, it is characterised in that: the structures (1) are by bottom, side
Wall and top enclose the accommodation space of synthesis, and the water inlet is set on the side wall, firstth area (11) and described the
The top in 2nd area (12) is connected to.
7. a kind of protective device of water pump as described in claim 1, it is characterised in that: it further include vaccum-pumping equipment (4), it is described
Vaccum-pumping equipment (4) is connected to the siphon pipe (2), is vacuumized for the siphon pipe (2).
8. a kind of protective device of water pump as claimed in claim 7, it is characterised in that: the device further includes control system, institute
Stating control system includes liquidometer and controller, and the liquidometer is located at firstth area (11) and/or the secondth area for monitoring
(12) liquid level in the siphon pipe of side,
The controller is connected respectively at the vaccum-pumping equipment (4) with the liquidometer, for being monitored according to the liquidometer
The liquid level height value arrived controls vaccum-pumping equipment (4) movement.
9. a kind of guard method of water pump, it is characterised in that: using the protective device of water pump as claimed in claim 8, specifically
Method is as follows:
It sets the starting level threshold of vaccum-pumping equipment (4) and closes level threshold,
Liquidometer real-time monitoring is located at the liquid level height value in the siphon pipe in firstth area (11) and/or the secondth area (12),
When liquid level height value reaches starting level threshold, then vaccum-pumping equipment (4) starting vacuumizes the siphon pipe, works as liquid level
Height reaches closing level threshold, then the vaccum-pumping equipment (4), which is closed, stops vacuumizing the siphon pipe, the firstth area (11)
Interior water passes through siphon pipe sucking the secondth area (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910563642.5A CN110397618A (en) | 2019-06-26 | 2019-06-26 | A kind of protective device and guard method of water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910563642.5A CN110397618A (en) | 2019-06-26 | 2019-06-26 | A kind of protective device and guard method of water pump |
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| Publication Number | Publication Date |
|---|---|
| CN110397618A true CN110397618A (en) | 2019-11-01 |
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ID=68324232
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910563642.5A Pending CN110397618A (en) | 2019-06-26 | 2019-06-26 | A kind of protective device and guard method of water pump |
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| CN (1) | CN110397618A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113023994A (en) * | 2021-03-18 | 2021-06-25 | 河南绿水青山环保科技有限公司 | Chemical wastewater treatment and recycling device |
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| CN107806170A (en) * | 2017-09-30 | 2018-03-16 | 武汉圣禹排水***有限公司 | First rain storage pond flap type flusher, its control method and first rain storage pond |
| CN207863114U (en) * | 2017-12-13 | 2018-09-14 | 广州市设计院 | Gully and pond system |
| CN207959477U (en) * | 2017-12-28 | 2018-10-12 | 武汉圣禹排水***有限公司 | A kind of shunting well including multi-functional sewage processing equipment |
| CN109577464A (en) * | 2018-12-01 | 2019-04-05 | 安徽正水务有限公司 | A kind of prefabricated wisdom Vatch basin |
| CN210715226U (en) * | 2019-06-26 | 2020-06-09 | 武汉圣禹排水***有限公司 | Water pump protection device |
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