CN220225678U - Water conservancy drainage device - Google Patents
Water conservancy drainage device Download PDFInfo
- Publication number
- CN220225678U CN220225678U CN202321298160.XU CN202321298160U CN220225678U CN 220225678 U CN220225678 U CN 220225678U CN 202321298160 U CN202321298160 U CN 202321298160U CN 220225678 U CN220225678 U CN 220225678U
- Authority
- CN
- China
- Prior art keywords
- pipe
- water
- drainage
- filter screen
- bottom filter
- 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.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 116
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 239000007921 spray Substances 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 claims abstract description 7
- 238000003860 storage Methods 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 27
- 238000005086 pumping Methods 0.000 claims description 8
- 239000011550 stock solution Substances 0.000 claims description 6
- 238000011010 flushing procedure Methods 0.000 abstract description 13
- 238000004140 cleaning Methods 0.000 abstract description 5
- 230000002265 prevention Effects 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 description 14
- 230000009471 action Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Landscapes
- Filtration Of Liquid (AREA)
Abstract
The utility model belongs to the technical field of flood prevention and drainage equipment, and particularly relates to a water conservancy drainage device which comprises a drainage vehicle, wherein a water inlet pipe for sucking accumulated water is fixedly arranged at the bottom of one end of the drainage vehicle, a bottom filter screen for separating sundries is fixedly arranged at the bottom of the water inlet pipe, an inner circular pipe is fixedly arranged inside the water inlet pipe and above the bottom filter screen, an inner circular pipe is rotatably arranged inside the water inlet pipe through the inner circular pipe, inclined spray pipes are fixedly connected to the lower surface of the inner circular pipe in an annular array manner, a sundry removal frame is rotatably assembled below the bottom filter screen, and a recoil triggering mechanism for controlling the inclined spray pipes to reversely flush the bottom filter screen is arranged inside the drainage vehicle. The utility model can wash off sundries attached to the lower surface of the bottom filter screen by means of reverse water flow, ensure smooth progress of drainage operation, improve cleaning effect of the bottom filter screen, and has simple structure and small volume of the back flushing power mechanism.
Description
Technical Field
The utility model belongs to the technical field of flood prevention and drainage equipment, and particularly relates to a water conservancy drainage device.
Background
Drainage refers to drainage of ponding which is harmful to production and life, and the most common drainage device is a flood prevention drainage vehicle.
Problems of the prior art:
when the existing waterlogging drainage equipment is used for drainage operation, the equipment is generally put into the ponding, then the water is pumped by a water pump mechanism in the equipment and then discharged to other places through a water pipe, in the process, as plastic bags, fallen leaves and other sundries are often accompanied in urban ponding, the sundries are likely to directly block a water pumping port of the waterlogging drainage equipment, the water flow rate at the water pumping port of the waterlogging drainage equipment is further directly reduced, the working efficiency of the waterlogging drainage equipment is reduced, and in addition, the water pumping port of the waterlogging drainage equipment is positioned at the bottom, so that the working difficulty of manually cleaning the sundries is directly increased.
Disclosure of Invention
The utility model aims to provide a water conservancy drainage device which can wash off sundries attached to the lower surface of a bottom filter screen by means of reverse water flow, ensure smooth drainage operation, improve the cleaning effect of the bottom filter screen and enable a backwashing power mechanism to be simple in structure and small in size.
The technical scheme adopted by the utility model is as follows:
the utility model provides a water conservancy drainage device, includes the drainage car, the one end bottom fixed mounting of drainage car has the water inlet pipe that is used for supplying ponding to inhale, the bottom fixed mounting of water inlet pipe has the bottom filter screen that is used for separating debris, the inside of water inlet pipe and the top that lies in the bottom filter screen fixed mounting have interior rail frame, just the inside interior ring canal that rotates through interior rail frame of water inlet pipe, just the lower surface annular array fixedly connected with oblique spray tube of interior ring canal, the outer wall fixed mounting of water inlet pipe has the outer ring canal, just outer ring canal is connected through the connecting pipe that sets up with interior ring canal and communicates with each other;
the inside of drainage car is installed and is used for controlling the reverse recoil trigger mechanism that washes to the filter screen of end to the oblique spray tube, recoil trigger mechanism includes the stock solution pipe of fixedly mounted has drainage car, the inside one end activity grafting of stock solution pipe has the push rod, the one end of push rod is located stock solution pipe internally mounted and has the piston, and be connected with the spring between the other end of push rod and the inner wall of drainage car, the one end fixedly connected with water guide pipe of stock solution pipe, and the end of water guide pipe with outer loop pipe connection communicates with each other.
The inside mounting of drainage car has the water pumping mechanism that is used for extracting ponding, the outer wall bottom of drainage car rotates and installs the drive wheel, and the one end outer wall fixedly connected with of drainage car is used for carrying the drain pipe of ponding.
The edge annular array type of the bottom filter screen is provided with an arc-shaped guide groove in a penetrating mode, a impurity removing frame is rotatably assembled below the bottom filter screen, and the inner ring pipe is connected with the impurity removing frame through a connecting rod penetrating through the arc-shaped guide groove.
One end integral type fixedly connected with ratch of push rod, the drainage car is inside and be located the below fixed mounting of stock solution pipe have the motor, just the output fixed mounting of motor has the breach gear, the ratch with the breach gear meshes mutually.
A smooth notch is formed in one section of the outer edge of the notch gear, and the spring is in a compressed state.
The integrated water diversion pipe is characterized in that the top of the liquid storage pipe is fixedly connected with a water diversion pipe used for guiding water into the liquid storage pipe, the water diversion pipe is symmetrically and rotatably provided with one-way baffles close to two sides of the inner wall of the liquid storage pipe, and the tail end surface of each one-way baffle is provided with a buoy.
The utility model has the technical effects that:
(1) According to the utility model, the water flow reversely sprayed to the bottom filter screen by the inclined spray pipe can wash off sundries attached to the lower surface of the bottom filter screen, so that good water conveying rate of the water inlet pipe is ensured, the probability of blocking the water inlet pipe is reduced, and smooth drainage operation is ensured; in addition, with the help of the powerful impact force of rivers, the inner ring pipe can take place relative rotation between interior rail frame simultaneously this moment, and the inner ring pipe can drive clear miscellaneous frame and rotate together, and clear miscellaneous frame that laminates mutually with bottom filter screen lower surface can effectively scrape the intractable debris of adhesion at bottom filter screen lower surface when rotatory, further improves the cleaning performance to the bottom filter screen, and clear miscellaneous frame's rotation is realized by the counter-impact force when utilizing the rivers blowout, and then does not need extra power equipment to control.
(2) In the utility model, at the initial stage of the waterlogging operation, part of water flow enters the liquid storage pipe through the water guide pipe, after the back flushing function is started, the push rod drives the piston to move quickly, and at the moment, the piston can extrude water in the liquid storage pipe quickly, so that the back flushing operation of the bottom filter screen is completed, and the back flushing triggering mechanism not only can automatically store the water for flushing the bottom filter screen, but also can be used as a power device for flushing the bottom filter screen, and has simple structure and compact structure.
Drawings
FIG. 1 is a bottom perspective view of a drainage vehicle according to an embodiment of the present utility model;
FIG. 2 is a plan sectional view of a drainage vehicle provided by an embodiment of the present utility model;
FIG. 3 is an assembled block diagram of a water inlet tube and a recoil trigger mechanism provided by an embodiment of the present utility model;
FIG. 4 is an exploded view of the internal structure of a water inlet pipe according to an embodiment of the present utility model;
FIG. 5 is a cross-sectional plan view of a recoil trigger mechanism provided by an embodiment of the present utility model.
In the drawings, the list of components represented by the various numbers is as follows:
1. draining the waterlogging vehicle; 2. a driving wheel; 3. a drain pipe; 4. a water inlet pipe; 401. a bottom filter screen; 402. an arc guide groove; 403. an inner circular rail frame; 404. an inner collar; 405. a diagonal nozzle; 406. a connecting rod; 407. a impurity removing frame; 408. an outer collar; 409. a connecting pipe; 5. a recoil trigger mechanism; 501. a liquid storage tube; 502. a water conduit; 503. a one-way baffle; 504. a buoy; 505. a push rod; 506. a piston; 507. a spring; 508. a toothed bar; 509. a motor; 510. a notch gear; 511. a water guide pipe.
Description of the embodiments
The present utility model will be specifically described with reference to examples below in order to make the objects and advantages of the present utility model more apparent. It should be understood that the following text is intended to describe only one or more specific embodiments of the utility model and does not limit the scope of the utility model strictly as claimed.
As shown in fig. 1-5, a water conservancy drainage device comprises a drainage vehicle 1, wherein a water pumping mechanism for pumping accumulated water is arranged in the drainage vehicle 1, a driving wheel 2 is rotatably arranged at the bottom of the outer wall of the drainage vehicle 1, a drainage pipe 3 for conveying the accumulated water is fixedly connected with the outer wall of one end of the drainage vehicle 1, a water inlet pipe 4 for water accumulation suction is fixedly arranged at the bottom of one end of the drainage vehicle 1, and a recoil triggering mechanism 5 for controlling a diagonal nozzle 405 to reversely flush a bottom filter screen 401 is arranged in the drainage vehicle 1.
According to the above structure, when the drainage operation is performed, the drainage vehicle 1 is driven to the water accumulation position, then the water pumping mechanism in the drainage vehicle is started, and the accumulated water is sucked by the water inlet pipe 4 and finally transported to the drainage point by the drain pipe 3, so that the drainage operation is completed, and the process is in the prior art and is not repeated herein.
Referring to fig. 3 and 4, a bottom filter screen 401 for separating sundries is fixedly installed at the bottom of the water inlet pipe 4, an inner circular rail frame 403 is fixedly installed inside the water inlet pipe 4 and above the bottom filter screen 401, an inner circular pipe 404 is rotatably installed inside the water inlet pipe 4 through the inner circular rail frame 403, inclined spray pipes 405 are fixedly connected to the lower surface of the inner circular pipe 404 in an annular array mode, an outer circular pipe 408 is fixedly installed on the outer wall of the water inlet pipe 4, and the outer circular pipe 408 is connected and communicated with the inner circular pipe 404 through a connecting pipe 409.
Referring to fig. 3 and 4, an arc-shaped guide groove 402 is formed in the bottom screen 401 in an annular array manner, a impurity removing frame 407 is rotatably assembled below the bottom screen 401, and an inner ring pipe 404 is connected with the impurity removing frame 407 through a connecting rod 406 penetrating through the arc-shaped guide groove 402.
According to the structure, in the process that the accumulated water passes through the water inlet pipe 4, the bottom filter screen 401 has the effect of filtering sundries, after the water drainage operation is carried out for a period of time, the back flushing function of the bottom filter screen 401 in the equipment is started, at the moment, the water flow with high turbulence enters into each connecting pipe 409 from the outer ring pipe 408 and then enters into the inner ring pipe 404, and finally is sprayed to the bottom filter screen 401 through the inclined spray pipe 405, the water flow reversely sprayed to the bottom filter screen 401 by the inclined spray pipe 405 can wash out sundries attached to the lower surface of the bottom filter screen 401, so that the good water conveying rate of the water inlet pipe 4 is ensured, the blocking probability of the water inlet pipe 4 is reduced, and the smooth water drainage operation is ensured; in addition, as shown in fig. 4, according to the direction of the oblique nozzle 405, the inner collar 404 and the inner rail frame 403 are simultaneously rotated relatively due to strong impact force of water flow, and the inner collar 404 and the impurity removing frame 407 are connected through the connecting rod 406, so that the inner collar 404 drives the impurity removing frame 407 to rotate together, and the impurity removing frame 407 attached to the lower surface of the bottom filter 401 can effectively scrape off the refractory impurities attached to the lower surface of the bottom filter 401 during rotation, thereby further improving the cleaning effect on the bottom filter 401, and the rotation of the impurity removing frame 407 is realized by using the reverse impact force of water flow during spraying, so that no additional electric equipment is needed for control.
Referring to fig. 3 and 5, the recoil trigger mechanism 5 includes a liquid storage pipe 501 fixedly installed with the drainage vehicle 1, a push rod 505 is movably inserted into one end of the liquid storage pipe 501, a piston 506 is installed at one end of the push rod 505 and located in the liquid storage pipe 501, a spring 507 is connected between the other end of the push rod 505 and the inner wall of the drainage vehicle 1, one end of the liquid storage pipe 501 is fixedly connected with a water guide pipe 511, and the tail end of the water guide pipe 511 is connected and communicated with an outer ring pipe 408.
Referring to fig. 5, one end of a push rod 505 is integrally and fixedly connected with a toothed bar 508, a motor 509 is fixedly installed inside the drainage vehicle 1 and below the liquid storage pipe 501, a notch gear 510 is fixedly installed at the output end of the motor 509, the toothed bar 508 is meshed with the notch gear 510, a smooth notch is formed in one section of the outer edge of the notch gear 510, and a spring 507 is in a compressed state.
Referring to fig. 5, a water conduit 502 for guiding moisture into the liquid storage pipe 501 is integrally and fixedly connected to the top of the liquid storage pipe 501, a unidirectional baffle 503 is symmetrically and rotatably installed on two sides of the water conduit 502 close to the inner wall of the liquid storage pipe 501, and a buoy 504 is installed on the end surface of the unidirectional baffle 503.
According to the above structure, at the beginning of the water drainage operation, part of water enters the liquid storage pipe 501 through the water conduit 502, after the liquid storage pipe 501 is fully filled with water, the water level continuously rises, the two one-way baffles 503 can be made to rotate oppositely under the action of the buoyancy of the buoy 504 and block the water conduit 502, after the back flushing function is started, the motor 509 is immediately started and drives the notch gear 510 to rotate, as shown in fig. 5, the notch-containing part of the notch gear 510 is immediately contacted with the toothed bar 508, the toothed bar 508 is not limited by gear teeth, the push bar 505 can drive the piston 506 to move rapidly under the action of the spring 507, at this time, the piston 506 can extrude the water in the liquid storage pipe 501 rapidly, and the water is injected into the outer loop 408 through the water conduit 511, so that the back flushing operation of the bottom filter 401 is finished, the motor 509 is started again after the back flushing operation is finished, at this time, the notch-containing part of the notch gear 510 can be contacted with the toothed bar 508, the meshing of the two can drive the push bar 505 to reset, and the back flushing trigger mechanism 5 can not only realize automatic storage of the water for the bottom filter 401, but also can be used as a power device for flushing the bottom filter 401, and has a compact structure.
The working principle of the utility model is as follows: at the beginning of the water drainage operation, part of water flow enters the liquid storage pipe 501 through the water guide pipe 502, after the liquid storage pipe 501 is full of water, the water level continuously rises, the two one-way baffles 503 can be made to rotate oppositely under the action of the buoyancy of the buoy 504 and block the water guide pipe 502, after the back flushing function is started, the motor 509 is immediately started and drives the notch gear 510 to rotate, as shown in fig. 5, the notch-containing part of the notch gear 510 is immediately contacted with the toothed bar 508, the toothed bar 508 is not limited by gear teeth at the moment, the push rod 505 can drive the piston 506 to move rapidly under the action of the spring 507, and at the moment, the piston 506 can extrude the water in the liquid storage pipe 501 rapidly and inject the water into the outer ring pipe 408 through the water guide pipe 511;
when the turbulent water flow enters each connecting pipe 409 from the outer pipe 408, then enters the inner pipe 404, and finally is sprayed to the bottom filter screen 401 through the inclined spray pipe 405, the water flow reversely sprayed to the bottom filter screen 401 by the inclined spray pipe 405 can wash out sundries attached to the lower surface of the bottom filter screen 401; in addition, as shown in fig. 4, according to the direction of the oblique nozzle 405, by means of strong impact force of water flow, the inner collar 404 and the inner rail frame 403 simultaneously rotate relatively, and because the inner collar 404 is connected with the impurity removing frame 407 through the connecting rod 406, the inner collar 404 drives the impurity removing frame 407 to rotate together, and the impurity removing frame 407 attached to the lower surface of the bottom filter 401 can effectively scrape out stubborn impurities attached to the lower surface of the bottom filter 401 during rotation.
The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.
Claims (6)
1. The utility model provides a water conservancy drainage device, includes drainage car (1), its characterized in that: the water drainage vehicle is characterized in that a water inlet pipe (4) for sucking accumulated water is fixedly arranged at the bottom of one end of the water drainage vehicle (1), a bottom filter screen (401) for separating sundries is fixedly arranged at the bottom of the water inlet pipe (4), an inner circular rail frame (403) is fixedly arranged in the water inlet pipe (4) and above the bottom filter screen (401), an inner circular pipe (404) is rotatably arranged in the water inlet pipe (4) through the inner circular rail frame (403), inclined spray pipes (405) are fixedly connected to the lower surface of the inner circular pipe (404) in an annular array mode, an outer circular pipe (408) is fixedly arranged on the outer wall of the water inlet pipe (4), and the outer circular pipe (408) is connected and communicated with the inner circular pipe (404) through a connecting pipe (409);
the inside mounting of drainage car (1) has recoil trigger mechanism (5) that are used for controlling reverse to the filter screen (401) of bottom of oblique spray tube (405) to wash, recoil trigger mechanism (5) are including liquid storage tube (501) that fixedly mounted has drainage car (1), the inside one end activity of liquid storage tube (501) is pegged graft and is had push rod (505), the one end of push rod (505) is located liquid storage tube (501) internally mounted and has piston (506), and be connected with spring (507) between the other end of push rod (505) and the inner wall of drainage car (1), the one end fixedly connected with water guide tube (511) of liquid storage tube (501), and the end of water guide tube (511) with outer loop pipe (408) are connected and are communicated.
2. The water conservancy drainage device of claim 1 wherein: the inside mounting of drainage car (1) has the pumping mechanism that is used for extracting ponding, the outer wall bottom of drainage car (1) rotates and installs drive wheel (2), and the one end outer wall fixedly connected with of drainage car (1) is used for carrying drain pipe (3) of ponding.
3. The water conservancy drainage device of claim 1 wherein: the edge annular array of bottom filter screen (401) runs through and has seted up arc line guide slot (402), the below of bottom filter screen (401) rotates and sets up clear miscellaneous frame (407), just interior ring pipe (404) are connected through connecting rod (406) that runs through arc line guide slot (402) with clear miscellaneous frame (407).
4. The water conservancy drainage device of claim 1 wherein: one end integral type fixedly connected with ratch (508) of push rod (505), the below fixed mounting that is located stock solution pipe (501) inside drainage car (1) has motor (509), just the output fixed mounting of motor (509) has notch gear (510), ratch (508) with notch gear (510) mesh.
5. The water conservation drainage device of claim 4 wherein: a smooth gap is formed in one section of the outer edge of the gap gear (510), and the spring (507) is in a compressed state.
6. The water conservancy drainage device of claim 1 wherein: the integrated water diversion pipe is characterized in that the top of the liquid storage pipe (501) is fixedly connected with a water diversion pipe (502) used for guiding water into the liquid storage pipe (501), the water diversion pipe (502) is symmetrically and rotatably provided with a one-way baffle (503) close to the two sides of the inner wall of the liquid storage pipe (501), and the tail end surface of the one-way baffle (503) is provided with a buoy (504).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321298160.XU CN220225678U (en) | 2023-05-26 | 2023-05-26 | Water conservancy drainage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321298160.XU CN220225678U (en) | 2023-05-26 | 2023-05-26 | Water conservancy drainage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220225678U true CN220225678U (en) | 2023-12-22 |
Family
ID=89175333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321298160.XU Active CN220225678U (en) | 2023-05-26 | 2023-05-26 | Water conservancy drainage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220225678U (en) |
-
2023
- 2023-05-26 CN CN202321298160.XU patent/CN220225678U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112403058A (en) | Self-cleaning anti-blocking filter screen | |
| CN220225678U (en) | Water conservancy drainage device | |
| CN220070976U (en) | River course device of decontaminating | |
| CN113669304A (en) | Suction head for dredge pump capable of rapidly filtering and preventing blockage | |
| CN111271296B (en) | Self-blockage-cleaning type submersible pump | |
| CN116557353B (en) | Prevent self priming pump that jam is piled up inside | |
| CN111365108A (en) | Dual-purification carbon deposition prevention automobile exhaust purification device | |
| CN108525925B (en) | Fountain system | |
| CN216041656U (en) | Integrated pump station | |
| CN214808922U (en) | Filter device for drilling speed increase | |
| CN214425421U (en) | Solidification-preventing cleaning device for sludge conveying pipeline | |
| CN214808961U (en) | Solid-state filter with automatic cleaning function | |
| CN210078993U (en) | Defeated filter equipment that uses of collection | |
| CN113606195A (en) | Anti-blocking automatic cleaning device based on centrifugal pump | |
| CN219922207U (en) | Self-filtering structure for solid sundries of water supply pump station | |
| CN110833747A (en) | Rainwater filters tail gas processing apparatus | |
| CN215736204U (en) | Irrigation device for hydraulic engineering | |
| CN220747157U (en) | Anti-blocking device for water supply and drainage pipeline | |
| CN219558808U (en) | Suction dredge equipment with anti-jamming structure | |
| CN114809226B (en) | Water accumulation removing environment-friendly device for building construction | |
| CN216174761U (en) | Novel overflow washing of gluey frame cleaning machine device | |
| CN218345185U (en) | Sewage treatment device of car washer | |
| CN215829382U (en) | Hydraulic engineering construction drainage device | |
| CN218686946U (en) | Well is collected to disconnect-type vacuum negative pressure | |
| CN218244891U (en) | Energy-saving siphon type irrigation application device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231222 Address after: 731100 No. 18 Xinzhuang Lane, Suonan Town, Dongxiang Autonomous County, Linxia Hui Autonomous Prefecture, Gansu Province Patentee after: Gansu Shengshi Hengrui Water Resources and Hydropower Engineering Co.,Ltd. Address before: Room 301, Unit 5, Building 118, Hengshun Park, No. 399 Xiongzhou South Road, Longchi Street, Liuhe District, Nanjing City, Jiangsu Province, 211500 Patentee before: Nanjing Linsong Construction Engineering Co.,Ltd. |
|
| CP03 | Change of name, title or address |
Address after: 731100 No. 18 Xinzhuang Lane, Suonan Town, Dongxiang Autonomous County, Linxia Hui Autonomous Prefecture, Gansu Province Patentee after: Shengshi Hengrui Construction Group Co.,Ltd. Country or region after: China Address before: 731100 No. 18 Xinzhuang Lane, Suonan Town, Dongxiang Autonomous County, Linxia Hui Autonomous Prefecture, Gansu Province Patentee before: Gansu Shengshi Hengrui Water Resources and Hydropower Engineering Co.,Ltd. Country or region before: China |