CN204608728U - A kind of pilot-operated type Hydro-automatic gate structure - Google Patents
A kind of pilot-operated type Hydro-automatic gate structure Download PDFInfo
- Publication number
- CN204608728U CN204608728U CN201520194751.1U CN201520194751U CN204608728U CN 204608728 U CN204608728 U CN 204608728U CN 201520194751 U CN201520194751 U CN 201520194751U CN 204608728 U CN204608728 U CN 204608728U
- Authority
- CN
- China
- Prior art keywords
- buoyancy tank
- tank room
- gate
- water inlet
- float
- 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.)
- Withdrawn - After Issue
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 90
- 239000002965 rope Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 230000000712 assembly Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 5
- 238000007667 floating Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 12
- 230000001105 regulatory Effects 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 2
- 230000003028 elevating Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000008239 natural water Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000630 rising Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Abstract
The utility model discloses a kind of pilot-operated type Hydro-automatic gate structure, aquifer reserve is provided with float chamber in pond, and the bottom of float chamber has current via hole, and current via hole communicates with aquifer reserve pond; Float is provided with in float chamber; The both sides of the edge of gate and bottom margin respectively with both side surface and the bottom fitted seal of flood discharge passage; Bottom towards the sidewall of the buoyancy tank room of water (flow) direction side has buoyancy tank room water inlet, and the sidewall bottom of the buoyancy tank room of water (flow) direction side has buoyancy tank room weep hole dorsad; Water inlet, buoyancy tank room is provided with the plugging device of shutoff buoyancy tank room water inlet, is connected with linkage between plugging device and float.Is controlled plugging device by the floating of float and be elevated with declining, when storage pond liquid level is very low, buoyancy tank room starts to intake, and gate is opened by the effect of buoyancy tank automatically, when storage pond reach the highest liquid level time, plugging device shutoff buoyancy tank room water inlet, gate slowly closing.
Description
Technical field
The utility model relates to drainage system equipment technical field, is specifically related to a kind of pilot-operated type Hydro-automatic gate structure.
Background technology
At municipal rainwater or sewage network in the system of natural water (rivers, lake etc.) overflow, often through gate controlling water level height.Gate needs to carry out flood discharge according to different water levels, needs power drive, consumes the energy more, be also inconvenient to keep in repair, and the height of water level in aquifer reserve pond is uncontrollable.Therefore how to design a kind of structure simple, do not consume the energy, and the gate structure of pool water level height of controllably regulating and storing down is current problems faced.
Utility model content
The utility model is exactly for above-mentioned technical problem, a kind of pilot-operated type Hydro-automatic gate structure is provided, this structure controls the water inlet of buoyancy tank room by the structure of float and balancing weight, by the keying of buoyancy tank regulating gate, thus control the height of water level in aquifer reserve pond, whole process is without the need to consuming the energy, and practicality is good.
For realizing this object, the pilot-operated type Hydro-automatic gate structure designed by the utility model, comprise the gate being arranged at runner side, the buoyancy tank room being arranged at runner opposite side and be later than buoyancy tank room water inlet aquifer reserve pond; Described gate is fixed on the side of rotating shaft, and the opposite side of described rotating shaft is fixed with buoyancy tank, and described buoyancy tank is arranged in buoyancy tank room; The two ends of described rotating shaft are articulated with on the flow path wall of runner both sides respectively, are flood discharge passage between the flow path wall of described buoyancy tank and runner side; It is characterized in that: be provided with float chamber in described aquifer reserve pond, the bottom of described float chamber has current via hole, and described current via hole communicates with aquifer reserve pond; Float is provided with in described float chamber; The both sides of the edge of described gate and bottom margin respectively with both side surface and the bottom fitted seal of flood discharge passage; Bottom towards the sidewall of the buoyancy tank room of water (flow) direction side has buoyancy tank room water inlet, and the sidewall bottom of the buoyancy tank room of water (flow) direction side has buoyancy tank room weep hole dorsad; Water inlet, described buoyancy tank room is provided with the plugging device of shutoff buoyancy tank room water inlet, is connected with linkage between described plugging device and float.
Further, the current via hole of described float chamber bottom is float chamber weep hole, and the top of the side sidewall of described float chamber has float chamber water inlet, and the water inlet cross section of described float chamber water inlet is greater than the water outlet cross section of float chamber weep hole.
Further, described float chamber weep hole place is provided with check valve of water drainage.
Further, described plugging device is balancing weight, described linkage comprises the first pulley be arranged at above aquifer reserve pond and the second pulley be arranged at above buoyancy tank room, wire rope is connected with between described float and balancing weight, one end of described wire rope connects float, and the other end connects balancing weight through the first pulley, the second pulley; The quality of described float is greater than the quality of balancing weight.
Further, described balancing weight is spheroid balancing weight.
Further, the water inlet cross section of described buoyancy tank room water inlet is greater than the water outlet cross section of buoyancy tank room weep hole;
Further, the bottom of described flood discharge passage is fixed with seal receptacle, and the two ends of described seal receptacle are individually fixed on the side sidewall of buoyancy tank room and the side flow path wall of runner; The bottom fitted seal of described seal receptacle and gate, both sides of the edge and the bottom margin of described gate are all fixed with sealing ring.
Further, described buoyancy tank fixed head is evenly arranged in the top of buoyancy tank along the width of buoyancy tank.
Further, gate fixed bar is fixedly connected with between described gate and rotating shaft, described gate is furnished with many group gate fixed bar assemblies, often organize gate fixed bar assembly and comprise two acutangulate gate fixed bars, described gate fixed bar assembly is evenly arranged along the width of gate.
Further, the flow path wall of described runner both sides is symmetrically fixed with rotating shaft location-plate, be fixed with bearing in described rotating shaft location-plate, the two ends of described rotating shaft are arranged in bearing.
The beneficial effects of the utility model are: by floating and the lifting controlling balancing weight that declines of float, when storage pond liquid level is very low, buoyancy tank room starts water inlet, and gate is opened automatically by the effect of buoyancy tank, when storage pond reach the highest liquid level time, the water inlet of balancing weight shutoff buoyancy tank room, gate slowly closing, reasonable in design of the present utility model, can according to water lev el control gate opening/closing, do not consume the energy in the course of work, there is good practicality.
Accompanying drawing explanation
Fig. 1 is the top view of buoyancy tank room and gate in upstream canal of the present utility model;
Fig. 2 is the front view of buoyancy tank room and gate in the utility model middle and upper reaches runner;
When Fig. 3 is storage pond low water stage state in the utility model, the structural representation that buoyancy tank room is opened;
When Fig. 4 is storage pond high water level state in the utility model, the structural representation that buoyancy tank room is closed;
Fig. 5 is the structural representation of gate and seal receptacle fitted seal in the utility model;
Structural representation when Fig. 6 is gate opening in Fig. 5;
Wherein, 1-gate, 2-aquifer reserve pond, 3-rotating shaft, 4-flow path wall, 5-buoyancy tank, 6-buoyancy tank room, 7-buoyancy tank room water inlet, 8-buoyancy tank room weep hole, 9-float chamber, 10-float chamber weep hole, 11-float, 12-balancing weight, the 13-the first pulley, the 14-the second pulley, 15-seal receptacle, 16-sealing ring, 17-rotating shaft location-plate, 18-buoyancy tank fixed head, 19-gate fixed bar, 20-float chamber water inlet, 21-wire rope, 22-stone bolt, 23-runner, 24-flood discharge passage, 25-check valve of water drainage.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, detailed description is further done to the utility model:
Pilot-operated type Hydro-automatic gate structure as shown in Fig. 1-4, comprise the gate 1 being arranged at runner 23 side, the buoyancy tank room 6 being arranged at runner 23 opposite side and be later than buoyancy tank room 6 intake aquifer reserve pond 2; Described gate 1 is fixed on the side of rotating shaft 3, and the opposite side of described rotating shaft 3 is fixed with buoyancy tank 5, and described buoyancy tank 5 is arranged in buoyancy tank room 6; The two ends of described rotating shaft 3 are articulated with on the flow path wall 4 of runner 23 both sides respectively, are flood discharge passage 24 between the flow path wall 4 of described buoyancy tank 5 and runner 23 side; It is characterized in that: be provided with float chamber 9 in described aquifer reserve pond 2, the bottom of described float chamber 9 has current via hole, and described current via hole communicates with aquifer reserve pond 2; Float 11 is provided with in described float chamber 9; The both sides of the edge of described gate 1 and bottom margin respectively with both side surface and the bottom fitted seal of flood discharge passage 24; Bottom towards the sidewall of the buoyancy tank room 6 of water (flow) direction side has buoyancy tank room water inlet 7, and the sidewall bottom of the buoyancy tank room 6 of water (flow) direction side has buoyancy tank room weep hole 8 dorsad; Water inlet 7 place, described buoyancy tank room is provided with the plugging device of shutoff buoyancy tank room water inlet 7, is connected with linkage between described plugging device and float 11.The lifting of float 11 is controlled by the water level height in float chamber 9, thus control the lifting of plugging device, by the water inlet of the elevating control buoyancy tank room 6 of plugging device, buoyancy tank 5 is subject to the buoyancy of water effect in buoyancy tank room 6, drives rotating shaft 3 to rotate, thus the keying of regulating gate 1, the opening-closing process of gate 1 is without the need to power, and adjustably descend the water level in storage pond 2 water level and upstream canal, reasonable in design, practical.
Preferably, the current via hole of described float chamber 9 bottom is float chamber weep hole 10, and the top of the side sidewall of described float chamber 9 has float chamber water inlet 20, and the water inlet cross section of described float chamber water inlet 20 is greater than the water outlet cross section of float chamber weep hole 10.Intake fast by float chamber water inlet 20, by float chamber weep hole 10 slowly draining, it is reliable and stable that guaranteed water level regulates.When float chamber weep hole 10 is less, when float chamber weep hole 10 is intake, its inflow is little, and the water inlet in float chamber 9 is highly not enough to make float 11 rise to design height, and buoyancy tank room water inlet 7 cannot be opened by plugging device.
Preferred further, described float chamber weep hole 10 place is provided with check valve of water drainage 25.By the structure of check valve of water drainage 25, ensure that float chamber weep hole 10 drainings are not intake, ensure float chamber 9 to enter drainage works quick, reliable and stable.
Preferably, described plugging device is balancing weight 12, described linkage comprises the first pulley 13 be arranged at above aquifer reserve pond 2 and the second pulley 14 be arranged at above buoyancy tank room 6, wire rope 21 is connected with between described float 11 and balancing weight 12, one end of described wire rope 21 connects float 11, and the other end connects balancing weight 12 through the first pulley 13, second pulley 14; The quality of described float 11 is greater than the quality of balancing weight 12.
The lifting of float 11 is controlled by the water level height in float chamber 9, thus control the lifting of balancing weight 12, by the water inlet of the elevating control buoyancy tank room 6 of balancing weight 12, buoyancy tank 5 is subject to the buoyancy of water effect in buoyancy tank room 6, drives rotating shaft 3 to rotate, thus the keying of regulating gate 1, the opening-closing process of gate 1 is without the need to power, and adjustably descend the water level in storage pond 2 water level and upstream canal, reasonable in design, practical.
In technique scheme, as shown in Fig. 3-4, described balancing weight 12 is spheroid balancing weight.Spheroid balancing weight 12 is comparatively common, and draw materials conveniently, cost is low.
In technique scheme, the water inlet cross section of described buoyancy tank room water inlet 7 is greater than the water outlet cross section of buoyancy tank room weep hole 8.Buoyancy tank room water inlet 7 ensure that the fast and stable that buoyancy tank room intakes, and the water outlet cross section of buoyancy tank room weep hole 8 is little, ensures that the water level in buoyancy tank room 6 slowly declines, thus guarantees that gate 1 can slowly closing, improves the stability that gate 1 works.
In technique scheme, as shown in Fig. 5-6, the bottom of described flood discharge passage 24 is fixed with seal receptacle 15, and the two ends of described seal receptacle 15 are individually fixed on the side sidewall of buoyancy tank room 6 and the side flow path wall 4 of runner 23; The bottom fitted seal of described seal receptacle 15 and gate 1, both sides of the edge and the bottom margin of described gate 1 are all fixed with sealing ring 16.Ensured the sealing of gate 1 by the structure of sealing ring 16, and the structure of seal receptacle 15 bottom runner 23 also effectively ensure that the sealing bottom gate 1.
In technique scheme, as shown in Fig. 1-2, the flow path wall 4 of described upstream canal both sides is symmetrically fixed with rotating shaft location-plate 17, is fixed with bearing in described rotating shaft location-plate 17, the two ends of described rotating shaft 3 are arranged in bearing.The articulated structure of rotating shaft 3 is simple, and be easy to install, practicality is good.
In technique scheme, as shown in Fig. 1-2, between the top of described buoyancy tank 5 and rotating shaft 3, be fixedly connected with polylith buoyancy tank fixed head 18.Ensured the intensity of the syndeton between buoyancy tank 5 and rotating shaft 3 by the structure of buoyancy tank fixed head 18, further enhance structural stability.
In technique scheme, described buoyancy tank fixed head 18 is evenly arranged in the top of buoyancy tank 5 along the width of buoyancy tank 5.Ensure buoyancy tank 5 and the bonding strength of rotating shaft 3 by the structure of polylith buoyancy tank fixed head 18, ensure the uniform force of buoyancy tank 5.
In technique scheme, between described gate 1 and rotating shaft 3, be fixedly connected with gate fixed bar 19.
In technique scheme, as shown in Fig. 1-2 and Fig. 5-6, described gate 1 is furnished with many group gate fixed bar assemblies, often organizes gate fixed bar assembly and comprise two acutangulate gate fixed bars 19.
In technique scheme, described gate fixed bar assembly is evenly arranged along the width of gate 1.Ensure that the bonding strength between gate 1 and rotating shaft 3 by the structure organizing gate fixed bar 19 more, and the hoisting capacity of gate 1 is larger, ensure that gate 1 is for the rising of water level and being quick on the draw of reduction, can reach effect and the object of timely flood discharge, further increase the practicality of device.
In the utility model, as shown in Figure 3, when the liquid level in the aquifer reserve pond 2 in downstream is very low, the water that float chamber is 9 li flows out, float 11 declines, under the Action of Gravity Field of float 11, the balancing weight 12 in buoyancy tank room 6 moves upward, and buoyancy tank room water inlet 7 is opened, buoyancy tank room 6 starts water inlet, after full water is entered in buoyancy tank room 6, buoyancy tank 5 floats, and drives gate 1 to rotarily open, and the aquifer reserve pond 2 in downstream starts water inlet.
When the water level in the aquifer reserve pond 2 in downstream rises to the highest permission water level of storage pond, the water in aquifer reserve pond 2 will enter float chamber 9, and float 11 floats, and balancing weight 12 moves downward under gravity, closes buoyancy tank room water inlet 7.The water of buoyancy tank room 6 is after the outflow of buoyancy tank room weep hole 8, and buoyancy tank 5 rotates, and drive gate 1 rotary closing, the water in aquifer reserve pond 2 discharges to natural water, keeps the stable level in aquifer reserve pond 2.
The above; be only detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited thereto; any those of ordinary skill in the art are in the technical scope disclosed by the utility model; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.Therefore, the protection domain that protection domain of the present utility model should limit with claims is as the criterion.
Claims (10)
1. a pilot-operated type Hydro-automatic gate structure, comprises the gate (1) being arranged at runner (23) side, the buoyancy tank room (6) being arranged at runner (23) opposite side and is later than the aquifer reserve pond (2) that buoyancy tank room (6) intakes; Described gate (1) is fixed on the side of rotating shaft (3), and the opposite side of described rotating shaft (3) is fixed with buoyancy tank (5), and described buoyancy tank (5) is arranged in buoyancy tank room (6); The two ends of described rotating shaft (3) are articulated with on the flow path wall (4) of runner (23) both sides respectively, are flood discharge passage (24) between the flow path wall (4) of described buoyancy tank (5) and runner (23) side; It is characterized in that: be provided with float chamber (9) in described aquifer reserve pond (2), the bottom of described float chamber (9) has current via hole, and described current via hole communicates with aquifer reserve pond (2); Float (11) is provided with in described float chamber (9); The both sides of the edge of described gate (1) and bottom margin respectively with both side surface and the bottom fitted seal of flood discharge passage (24); Bottom towards the sidewall of the buoyancy tank room (6) of water (flow) direction side has buoyancy tank room water inlet (7), and the sidewall bottom of the buoyancy tank room (6) of water (flow) direction side has buoyancy tank room weep hole (8) dorsad; Water inlet (7) place, described buoyancy tank room is provided with the plugging device of shutoff buoyancy tank room water inlet (7), is connected with linkage between described plugging device and float (11).
2. a kind of pilot-operated type Hydro-automatic gate structure as claimed in claim 1, it is characterized in that: the current via hole of described float chamber (9) bottom is float chamber weep hole (10), the top of the side sidewall of described float chamber (9) has float chamber water inlet (20), and the water inlet cross section of described float chamber water inlet (20) is greater than the water outlet cross section of float chamber weep hole (10).
3. a kind of pilot-operated type Hydro-automatic gate structure as claimed in claim 2, is characterized in that: described float chamber weep hole (10) place is provided with check valve of water drainage (25).
4. a kind of pilot-operated type Hydro-automatic gate structure as claimed in claim 1, it is characterized in that: described plugging device is balancing weight (12), described linkage comprises the first pulley (13) being arranged at top, aquifer reserve pond (2) and the second pulley (14) being arranged at top, buoyancy tank room (6), wire rope (21) is connected with between described float (11) and balancing weight (12), one end of described wire rope (21) connects float (11), the other end is through the first pulley (13), second pulley (14) connects balancing weight (12), the quality of described float (11) is greater than the quality of balancing weight (12).
5. a kind of pilot-operated type Hydro-automatic gate structure as claimed in claim 4, is characterized in that: described balancing weight (12) is spheroid balancing weight.
6. a kind of pilot-operated type Hydro-automatic gate structure as claimed in claim 1, is characterized in that: the water inlet cross section of described buoyancy tank room water inlet (7) is greater than the water outlet cross section of buoyancy tank room weep hole (8).
7. a kind of pilot-operated type Hydro-automatic gate structure as claimed in claim 1, it is characterized in that: the bottom of described flood discharge passage (24) is fixed with seal receptacle (15), the two ends of described seal receptacle (15) are individually fixed on the side sidewall of buoyancy tank room (6) and the side flow path wall (4) of runner (23); The bottom fitted seal of described seal receptacle (15) and gate (1), the both sides of the edge of described gate (1) and bottom margin are all fixed with sealing ring (16).
8. a kind of pilot-operated type Hydro-automatic gate structure as claimed in claim 1, is characterized in that: described buoyancy tank fixed head (18) is evenly arranged in the top of buoyancy tank (5) along the width of buoyancy tank (5).
9. a kind of pilot-operated type Hydro-automatic gate structure as claimed in claim 1, it is characterized in that: between described gate (1) and rotating shaft (3), be fixedly connected with gate fixed bar (19), described gate (1) is furnished with many group gate fixed bar assemblies, often organize gate fixed bar assembly and comprise two acutangulate gate fixed bars (19), described gate fixed bar assembly is evenly arranged along the width of gate (1).
10. a kind of pilot-operated type Hydro-automatic gate structure as claimed in claim 1, it is characterized in that: the flow path wall (4) of described runner (23) both sides is symmetrically fixed with rotating shaft location-plate (17), be fixed with bearing in described rotating shaft location-plate (17), the two ends of described rotating shaft (3) are arranged in bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520194751.1U CN204608728U (en) | 2015-04-02 | 2015-04-02 | A kind of pilot-operated type Hydro-automatic gate structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520194751.1U CN204608728U (en) | 2015-04-02 | 2015-04-02 | A kind of pilot-operated type Hydro-automatic gate structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204608728U true CN204608728U (en) | 2015-09-02 |
Family
ID=53961289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520194751.1U Withdrawn - After Issue CN204608728U (en) | 2015-04-02 | 2015-04-02 | A kind of pilot-operated type Hydro-automatic gate structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204608728U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775403A (en) * | 2015-04-02 | 2015-07-15 | 武汉圣禹排水系统有限公司 | Pilot operated-type hydraulic automatic gate structure |
| CN110244782A (en) * | 2019-07-04 | 2019-09-17 | 之间万维(北京)水环境技术有限公司 | A kind of water quality improvement water level management device and its regulation method |
-
2015
- 2015-04-02 CN CN201520194751.1U patent/CN204608728U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775403A (en) * | 2015-04-02 | 2015-07-15 | 武汉圣禹排水系统有限公司 | Pilot operated-type hydraulic automatic gate structure |
| CN104775403B (en) * | 2015-04-02 | 2017-01-04 | 武汉圣禹排水系统有限公司 | A kind of pilot-operated type Hydro-automatic gate structure |
| CN110244782A (en) * | 2019-07-04 | 2019-09-17 | 之间万维(北京)水环境技术有限公司 | A kind of water quality improvement water level management device and its regulation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201158814Y (en) | Layered water drawing structure | |
| CN204608970U (en) | A kind of hydraulic gate structure responded to water level and automatically open | |
| CN203200725U (en) | Shutter layered semi-automatic gate | |
| CN104746636A (en) | Waterpower gate structure capable of sensing water level and automatically opening | |
| CN204608728U (en) | A kind of pilot-operated type Hydro-automatic gate structure | |
| CN104878832B (en) | Reverse downstream Hydro-automatic gate | |
| CN104864160A (en) | Pilot-operated type axial hydro-automatic gate | |
| CN204491535U (en) | Two floating box type upstream controls weir gate device | |
| CN204664572U (en) | Leading type axis Hydro-automatic gate | |
| CN104863253B (en) | The axis Hydro-automatic gate that sensing water level automatically turns on | |
| CN201933554U (en) | Anti-overflow water groove-faucet set | |
| CN204676690U (en) | The axis Hydro-automatic gate that induction water level is opened automatically | |
| CN204676691U (en) | C type Hydro-automatic gate | |
| CN104775403A (en) | Pilot operated-type hydraulic automatic gate structure | |
| KR20150070538A (en) | Multi-step Floodgate structure for full stream | |
| CN205421190U (en) | A simple and convenient elevating gear for small -size river course gate | |
| CN102561273A (en) | Self-adjusting water intake device | |
| CN204608971U (en) | Anti counter-flowing Hydro-automatic gate | |
| CN104863254B (en) | C-type Hydro-automatic gate | |
| CN104695389B (en) | Double floating box type upstreams control weir gate device | |
| CN204753806U (en) | Reverse low reaches water conservancy self -shooter | |
| CN206090480U (en) | Automatic open and close gate mechanism | |
| CN104131538B (en) | Automatically to control flood and drain flooded fields irrigation rig | |
| CN204385693U (en) | Can the channel of approach of automatic desilting | |
| CN211621489U (en) | River sluice for hydraulic engineering |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150902 Effective date of abandoning: 20161019 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |