CN219272236U - Floating weir and overflow water outlet device - Google Patents
Floating weir and overflow water outlet device Download PDFInfo
- Publication number
- CN219272236U CN219272236U CN202223516551.2U CN202223516551U CN219272236U CN 219272236 U CN219272236 U CN 219272236U CN 202223516551 U CN202223516551 U CN 202223516551U CN 219272236 U CN219272236 U CN 219272236U
- Authority
- CN
- China
- Prior art keywords
- floating
- fixed end
- float
- weir
- supernatant
- 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
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Removal Of Floating Material (AREA)
Abstract
The utility model discloses a floating weir and an overflow water outlet device, wherein the floating weir is arranged between supernatant liquid in the overflow water outlet device and a discharge channel of the supernatant liquid, and comprises: a fixed end communicated with the discharge passage; the fixed end is fixed in a vertical direction relative to the discharge channel; and the floating piece and the fixed end form a moving pair, and the average density of the floating piece is smaller than or equal to that of the supernatant. The gravity and the buoyancy of the floating body are used as the length of the contact surface of the floating body and the fixed end, so that the height of the upper edge of the floating body relative to the fixed end is changed along with the change of the liquid level of the supernatant without manual adjustment. The method is particularly suitable for underground sewage treatment facilities, and is inconvenient in adjustment operation of the weir plate because the overhaul space is relatively closed.
Description
Technical Field
The utility model relates to the technical field of wastewater or sewage purification treatment equipment, in particular to a floating weir and an overflow water outlet device.
Background
A sedimentation tank is often used in sewage treatment equipment, sewage enters the sedimentation tank, solid-liquid separation is realized after diversion and diversion, and the solid (such as sludge) with higher density is collected at the bottom of the sedimentation tank or in a sludge hopper after sedimentation, and clarified liquid with lower density is discharged out of the sedimentation tank through an overflow tank.
In order to ensure that clear liquid can smoothly discharge sewage treatment equipment, a weir plate with adjustable height is arranged on an overflow groove, a triangular weir is arranged on the weir plate, and the height of the weir plate on the overflow groove is adjusted by manpower to control the uniformity of water yield. The manual adjustment needs to monitor the relative height change of the water level and the weir plate in real time, and the labor intensity is high. For the buried water treatment facilities, because the overhaul space is relatively closed, the adjustment operation of the weir plate by manpower is inconvenient, or the manual adjustment is difficult to realize.
Disclosure of Invention
Aiming at the problems existing in the height adjustment of the weir plate on the overflow trough in the prior art, the utility model provides a floating weir and an overflow water outlet device.
The floating weir that this application provided locates supernatant fluid in the overflow water outlet device with between the discharge passage of supernatant fluid contains:
a fixed end communicated with the discharge passage; the fixed end is fixed in a vertical direction relative to the discharge channel;
and the floating piece and the fixed end form a moving pair, and the average density of the floating piece is smaller than or equal to that of the supernatant. Wherein the average density of the floats, i.e. the total mass of the floats divided by the total volume.
The supernatant flows from the overflow drain to the drain through the fixed end and/or float. The length of the fixed end and the height of the float are calculated according to the water inlet flow of the overflow water outlet device and the height requirement of the liquid level in the overflow water outlet device when the overflow water outlet device is in a working state, so that the overflow water outlet device can timely discharge the supernatant.
The cross section area and the number of the channels of the fixed end are calculated according to the internal water inlet flow of the overflow water outlet device and the height requirement of the internal liquid level of the overflow water outlet device when the overflow water outlet device is in a working state, and the purpose of designing the parameters is to be capable of timely discharging the supernatant.
The cross-sectional shapes of the fixed end and the floating body can be round, rectangular and other polygons. The cross sections of the fixed end and the float may be variable, for example, the cross section gradually becomes larger according to the flow direction of the supernatant.
Wherein, the fixed end can be a straight pipe, a bent pipe or a folded pipe.
Wherein, no hole or gap allowing supernatant liquid to be left exists between the fixed end and the discharge channel. For the case of the position fixing of the discharge passage, the fixing end may be fixed in a vertical direction by means of being installed at the discharge passage; if the position of the outlet channel is not fixed, for example if the outlet channel is a flexible hose, the fixed end can be fixed in position in the vertical direction by means of a fixed connection to the overflow drain.
The sliding pair between the fixed end and the floating element can be realized through sliding fit between the inner wall of the floating element and the outer wall of the fixed end, or through arranging a sliding block on one of the inner wall of the floating element and the outer wall of the fixed end and arranging a sliding groove on the other one of the inner wall of the floating element and the outer wall of the fixed end. Or the movable pair between the fixed end and the floating piece can be realized through sliding fit between the inner wall of the fixed end and the outer wall of the floating piece, or through arranging a sliding block on one of the inner wall of the fixed end and the outer wall of the floating piece and arranging a sliding groove on the other one of the inner wall of the fixed end and the outer wall of the floating piece.
In a preferred embodiment, the float is in a cylinder shape with an upper part and a lower part open, and the float is sleeved outside the fixed end.
In a preferred embodiment, through holes are arranged on the wall of the float body, and the through holes can be rectangular, triangular, polygonal, circular, elliptical or the like.
In a preferred embodiment, the upper end of the wall of the float is provided with a plurality of weir, and the weir can be rectangular, trapezoidal or circular arc. And for the floats with through holes on the cylinder wall, the height of the weir crest is higher than the highest point of the through holes.
In a preferred embodiment, the distance of the bottom of the weir from the bottom of the float is equal to the height of the fixed end protruding out of the discharge channel.
In a preferred embodiment, the floating weir further comprises a limiting structure, wherein the limiting structure is used for ensuring that an overlapping part exists between the floating sub and the fixed end all the time:
the limiting structure comprises a connecting end and a limiting end;
the connecting end of the limiting structure is connected with the fixed end, the limiting end of the limiting structure extends along the direction of the moving pair between the floating sub and the fixed end, and the limiting end is positioned on an extension line of the wall of the floating sub;
the vertical distance of the limiting end of the limiting structure beyond the fixed end is equal to or smaller than the height of the maximum floating range of the floating element.
For the case that the height of the floating sub is larger than or equal to that of the fixed end, the vertical distance of the limiting end of the limiting structure beyond the fixed end is equal to or smaller than that of the fixed end; for the case that the height of the floating element is smaller than that of the fixed end, the vertical distance of the limiting end of the limiting structure beyond the fixed end is equal to or smaller than that of the floating element.
In a preferred embodiment, the fixed end is in the shape of a cylinder which is open up and down, and the fixed end is vertically connected to an upper wall or a side wall of the discharge passage.
In a preferred embodiment, especially for the above embodiment in which the fixed end is in a cylindrical shape with an upper and lower opening, the fixed end is vertically connected to an upper wall of the discharge passage, the floating weir further comprises:
the limiting structure comprises a connecting end and a limiting end, and is a structural member with gravity greater than the buoyancy force borne by the floating element;
the limiting end of the limiting structure extends along the vertical direction relative to the connecting end and is positioned on an extension line of the cylinder wall of the float;
the vertical distance of the limiting end of the limiting structure beyond the fixed end is equal to or smaller than the height of the maximum floating range of the floating element.
When the floating weir is installed, the floating sub-sleeve is firstly arranged on the outer wall of the fixed end, and then the limiting structure is arranged above the water collecting branch pipe.
In this embodiment, because the limiting structure is a structural member with gravity greater than the buoyancy force borne by the floating member, the effect of limiting the floating member from being separated from the water collecting branch pipe can be achieved by placing the limiting structure on the upper edge of the fixed end.
In a preferred embodiment, a gap is provided between the fixed end and the float, the gap being sized to accommodate sliding movement between the float and the fixed end and to allow the supernatant to flow into the gap.
In a preferred embodiment, the floats are non-uniform density structural members; the density of the upper end of the float is smaller than that of the lower end.
The floating body can be formed by combining two materials with different densities, wherein the density of the upper material of the floating body is smaller than that of the supernatant, the density of the lower material of the floating body is larger than that of the supernatant, and the average density of the combined floating body is smaller than or equal to that of the supernatant. The float may be made of a material having a gradient density, the upper material of the float having a density less than the density of the supernatant, the lower material of the float having a density greater than the density of the supernatant, and the average density of the float being less than or equal to the density of the supernatant.
The floating body can also comprise an inner layer and an outer layer;
the bottom surface of the outer layer of the floating body is higher than the bottom surface of the inner layer, and the top surface of the outer layer of the floating body is not limited to be flush with the top surface of the inner layer of the floating body;
the material of the outer layer of the float is smaller than the density of the supernatant, and the material of the inner layer of the float is larger than or equal to the density of the supernatant.
The application also provides an overflow water outlet device which is used for precipitation treatment of different density components in sewage, clear water with low density in the sewage is clarified to the upper layer to form supernatant, and the floating weir is connected with a supernatant discharge channel in the overflow water outlet device;
wherein, the fixed end is fixedly connected with the discharge channel.
In a preferred embodiment, the pipe diameter of the discharge channel is determined according to the maximum inflow of the overflow drain, on condition that the liquid in the discharge channel is not full.
The scheme of the floating weir disclosed by the utility model utilizes the gravity and the buoyancy of the floating body as the length of the contact surface of the floating body and the fixed end (the length of the contact surface of the floating body and the fixed end is the length of the overlapped part of the floating body and the fixed end in the direction of the supernatant flowing through the fixed end). When the liquid level of the supernatant liquid in the overflow water outlet device rises, the float rises under the action of buoyancy force; when the liquid level of the supernatant in the overflow water outlet device descends, the float descends under the action of gravity, the change of the upper edge of the float along with the change of the liquid level of the supernatant relative to the height of a discharge channel of the supernatant is realized, and the uniform water outlet flow of all positions can be ensured without manual adjustment. The method is particularly suitable for underground sewage treatment facilities, and is inconvenient in adjustment operation of the weir plate because the overhaul space is relatively closed.
The overflow water outlet device provided by the utility model has the advantages that overflow water is discharged from the floating weir, and the function of automatically adjusting the height of the weir plate of supernatant water outlet is realized. Therefore, the overflow water outlet device is especially suitable for the condition that the overhaul space is relatively closed, the operation space for adjusting the weir plate is small or manual adjustment is not possible in the underground sewage treatment facility.
Drawings
FIG. 1 is a schematic view of a floating weir according to embodiment 1 of the present utility model;
FIG. 2 is a schematic structural view of an embodiment of a floating weir provided in example 1 of the present utility model;
fig. 3 is a schematic structural view of a floating weir provided in embodiment 1 of the present utility model including a limiting structure;
fig. 4 is a schematic diagram of a part of the overflow water outlet device according to embodiment 2 of the present utility model;
fig. 5 is a schematic view of a part of the overflow outlet device according to embodiment 2 of the present utility model from another view;
fig. 6 is a schematic structural diagram of an overflow water outlet device according to embodiment 2 of the present utility model.
The graphic reference numerals: 1-discharge channel, 2-float, 201-float outer layer, 202-float inner layer, 3-fixed end, 6-weir, 7-through hole, 8-limit structure, 801-upper rod group, 802-connecting rod group, 803-lower rod group, 200-overflow water outlet device and 300-clear water channel.
Detailed Description
The utility model will be described in detail below with reference to the drawings in connection with embodiments. The principles and features of the present utility model are described below with reference to the drawings, and it should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The examples are given solely for the purpose of illustration and are not intended to limit the scope of the utility model.
Example 1
The present embodiment provides a floating weir, referring to fig. 1, which is disposed between a supernatant liquid in an overflow water outlet device and a discharge channel 1 of the supernatant liquid, and includes:
a fixed end 3 communicating with the discharge passage 1; the fixed end 3 is fixed in position in the vertical direction with respect to the discharge passage 1;
the floating element 2 and the fixed end 3 form a moving pair, and the average density of the floating element 2 is smaller than or equal to that of the supernatant.
In this embodiment, as shown in fig. 1, the float 2 is in a cylindrical shape with an upper and lower opening, and the float 2 is sleeved outside the fixed end 3. The fixed end 3 is in a cylindrical shape with an upper and lower opening, and the fixed end 3 is vertically connected to the upper wall of the discharge passage 1. The sliding pair between the fixed end 3 and the floating element 2 is realized through sliding fit between the inner wall of the floating element 2 and the outer wall of the fixed end 3. The direction of the movable pair between the fixed end 3 and the float 2 which are vertically arranged is the vertical direction, and the friction force between the fixed end 3 and the float 2 is small, so that the movable pair is favorable for ensuring smoother movement of the float 2 on the fixed end 3.
As for the structure of the float 2, this example gives a preferred embodiment: referring to fig. 2, 2 circular through holes 7 with an included angle of 180 degrees are arranged on the wall of the float 2. The upper end of the wall of the float 2 is provided with 4 rectangular weir 6 with an included angle of 90 degrees. The highest point of the through holes 7 in fig. 2 is below the bottom surface of the weir 6. By opening the weir 6, it is possible to realize that the portion of the float 2 where the weir 6 is opened is below the liquid surface of the supernatant liquid, and thus the stability of the float 2 in the supernatant liquid can be improved. The weir crest 6 is arranged on the float 2 in a central symmetry way, so that the gravity center of the float 2 is ensured to be positioned in the center. In addition, at a lower liquid level, the weir crest 6 realizes flow increase; at higher liquid level, the through holes 7 increase the flow rate.
In this embodiment above, a preferred embodiment of the size of the slice 6: the distance between the bottom of the weir 6 and the bottom of the float 2 is equal to the height of the fixed end 3 protruding out of the discharge channel 1. In this embodiment, when the liquid level in the tank is low, the float 2 falls on the discharge passage 1, and the overflow height of the supernatant liquid is the height of the fixed end 3. The overflow height of the floating body 2 to the supernatant reaches the maximum range, and the structure efficiency is highest.
The excessive water quantity in the tank body can be avoided in the working process, and when the liquid level is too high, the floating rotor 2 can be separated from the fixed end 3, so that the floating weir provided by the embodiment is invalid. The present embodiment provides an implementation of a limiting structure, so that the floating element 2 and the fixed end 3 always have an overlapping portion without separation: referring to fig. 3, a limiting structure 8 includes a connection end and a limiting end, the limiting structure 8 is connected to the upper edge of the cylinder wall of the fixed end 3, and the limiting end of the limiting structure 8 extends along the vertical direction and is located on an extension line of the cylinder wall of the float 2; the vertical distance of the limiting end of the limiting structure 8 beyond the fixed end 3 is equal to or smaller than the height of the maximum floating range of the floating element 2. When the floating body 2 rises along with the liquid level of the supernatant to be close to the separation fixed end, the upper end of the limiting structure 8 stops the floating body 2 from continuously floating.
In another embodiment of the limiting structure, the limiting structure 8 is a structural member with gravity greater than the buoyancy force borne by the floating element, so that the floating element can be stably seated on the upper edge of the fixed end 3 without floating or swaying along with water flow.
Referring to fig. 3, in this embodiment, the limiting structure 8 includes a limiting end 801, a connecting end 803 and a connecting rod group 802 for connecting the two ends, the connecting end 803 is connected to or placed above the fixed end 3, the upper end of the limiting structure 8 is a limiting end 801 formed by a plurality of rods which are arranged in a crossing manner, the tail end of each rod of the limiting end 801 is located right above the pipe wall of the floating member 2, and the vertical distance from the bottom surface of the connecting end 803 to the bottom surface of the limiting end 801 is equal to or smaller than the height of the maximum floating range of the floating member 2.
In this embodiment, a gap is provided between the fixed end 3 and the float 2, and the size of the gap satisfies the sliding between the float 2 and the fixed end 3 and allows the supernatant to flow into the gap. The gap provides a further overflow channel for the supernatant fluid and the supernatant fluid acts as a lubricant to make the movement of the float 2 along the fixed end 3 smoother, avoiding jamming.
Further, a structure for adjusting the size of a gap between the outer wall of the water collecting branch pipe 3 and the inner wall of the weir body 2, such as a sealing ring, a rubber ring, etc., is arranged between the outer wall and the inner wall.
In order to ensure that the float 2 can rise and fall with the change of the liquid level of the supernatant, the average density of the float 2 is less than or equal to the density of the supernatant.
In one embodiment, the float 2 is a non-uniform density structural member; the density of the upper end of the float 2 is smaller than that of the lower end. The density of the upper end is small, so that the floating element 2 floats when the liquid level of the supernatant rises above the height of the fixed end 3 and needs to rise by means of buoyancy, and the density of the lower end is large, so that the descending process is smooth when the floating element 2 does not need to float.
In a preferred embodiment, with continued reference to FIG. 3, the float 2 comprises an inner layer and an outer layer, the bottom surface of the outer layer 201 of the float being higher than the bottom surface of the inner layer 202 of the float. The material of the outer layer 201 of the float is smaller than the density of the supernatant, and the material of the inner layer 202 of the float is greater than or equal to the density of the supernatant. The outer layer of the low-density material is equivalent to the floating ring of the floating element 2, so that the floating stability of the floating element 2 is improved, and enough buoyancy is ensured.
Example 2
Referring to fig. 4 to 6, this embodiment provides an overflow water outlet device 200 for settling treatment of different density components in sewage, clear water with low density in sewage is clarified to an upper layer to form supernatant, and in embodiment 1, the floating weir is connected with a discharge channel 1 of the supernatant horizontally arranged in the overflow water outlet device 200, so as to discharge the supernatant in the overflow water outlet device 200 to a clear water channel 300;
wherein the fixed end 3 is fixedly connected with the discharge channel 1.
The pipe diameter of the discharge channel 1 is determined according to the maximum water inflow of the overflow water outlet device 200 on the condition that the liquid in the discharge channel 1 is not full.
The pipe diameter of the discharge channel 1 is determined according to the maximum inflow rate of the overflow drain 200, thereby ensuring that the floating weir in embodiment 1 has the power to flow into the floating weir without other electric driving mechanism.
In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.
Claims (10)
1. A floating weir, characterized in that it is provided between the supernatant fluid in the overflow outlet device and the discharge passage of said supernatant fluid, comprising:
a fixed end communicated with the discharge passage; the fixed end is fixed in a vertical direction relative to the discharge channel;
and the floating piece and the fixed end form a moving pair, and the average density of the floating piece is smaller than or equal to that of the supernatant.
2. The floating weir as defined in claim 1 wherein said float is in the form of a vertically open cylinder, said float being sleeved outside said fixed end.
3. The floating weir as claimed in claim 2, wherein the wall of the float is provided with through holes and/or the upper end of the wall of the float is provided with a plurality of weir.
4. A floating weir as claimed in claim 3 wherein the distance of the weir crest bottom from the bottom of the float is equal to the height of the fixed end protruding from the discharge passageway.
5. The floating weir as set forth in claim 2 further comprising:
the limiting structure comprises a connecting end and a limiting end;
the connecting end of the limiting structure is connected with the fixed end, the limiting end of the limiting structure extends along the direction of the moving pair between the floating sub and the fixed end, and the limiting end is positioned on an extension line of the wall of the floating sub;
the vertical distance of the limiting end of the limiting structure beyond the fixed end is equal to or smaller than the height of the maximum floating range of the floating element.
6. The floating weir as defined in claim 2 wherein said fixed end is in the form of a vertically open cylinder and is vertically attached to the upper or side wall of said discharge passageway.
7. The floating weir as set forth in claim 6 further comprising:
the limiting structure comprises a connecting end and a limiting end, and is a structural member with gravity greater than the buoyancy force borne by the floating element;
the limiting end of the limiting structure extends along the vertical direction relative to the connecting end and is positioned on an extension line of the cylinder wall of the float;
the vertical distance of the limiting end of the limiting structure beyond the fixed end is equal to or smaller than the height of the maximum floating range of the floating element.
8. The floating weir as defined in claim 1 wherein a gap is provided between the fixed end and the float, the gap being sized to accommodate sliding movement between the float and the fixed end and to allow the supernatant to flow into the gap.
9. The floating weir as defined in claim 1 wherein the float is a non-uniform density structural member; the density of the upper end of the float is smaller than that of the lower end.
10. An overflow water outlet device for sedimentation treatment of different density components in sewage, clear water with low density in the sewage is clarified to an upper layer to form supernatant, and the overflow water outlet device is characterized in that the floating weir in any one of claims 1-9 is connected with a supernatant discharge channel in the overflow water outlet device;
wherein, the fixed end is fixedly connected with the discharge channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223516551.2U CN219272236U (en) | 2022-12-28 | 2022-12-28 | Floating weir and overflow water outlet device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223516551.2U CN219272236U (en) | 2022-12-28 | 2022-12-28 | Floating weir and overflow water outlet device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219272236U true CN219272236U (en) | 2023-06-30 |
Family
ID=86932671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223516551.2U Active CN219272236U (en) | 2022-12-28 | 2022-12-28 | Floating weir and overflow water outlet device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219272236U (en) |
-
2022
- 2022-12-28 CN CN202223516551.2U patent/CN219272236U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8043026B2 (en) | Flow control system for a detention pond with tapered plunger | |
| CN101898808B (en) | Vortex dissolved-air floatation system | |
| CN110725383A (en) | Municipal sewage treatment system and sewage treatment method thereof | |
| KR101247531B1 (en) | Sludge and scum removing system, and scum skimmer used for the same | |
| KR20120068327A (en) | Verticality guide plate form dissolved airfloatation system using water flow of water treating apparatus | |
| CN110478978B (en) | Circular gravity sand-settling filter tank capable of automatically discharging sand | |
| CN111549893A (en) | Automatic drainage vatch basin | |
| CN219272236U (en) | Floating weir and overflow water outlet device | |
| CH701275B1 (en) | Fishway to overcome different levels of water lines between water supply and water drain on artificial water dams. | |
| CN110127815A (en) | A kind of gun barrel being provided with central tube | |
| CN106110720A (en) | A kind of waterpower controls siphon-type full-automatic cyclone sediment device | |
| CN219941879U (en) | Sedimentation tank | |
| CN116078003B (en) | Supernatant liquid water outlet structure and overflow water outlet device | |
| CN204752395U (en) | Oil interceptor | |
| CN217163310U (en) | Totally enclosed aeration grit chamber | |
| US20200009474A1 (en) | Systems and methods useful for efficient fluid run-off separation of liquid and solid contaminants | |
| CN100384749C (en) | Self-adjusting dry-wet alternated parallel-operation water tank system | |
| CN209679570U (en) | A kind of vertical sedimentation tank | |
| CN211660240U (en) | Separation tank for automatic float-sink test device of coal | |
| WO2001088289A1 (en) | Weir section, a sewer pipe structure including such a weir section and their method of construction | |
| CN206518973U (en) | The cyclone separator of water water flowing out structure is received in a kind of combination | |
| CN205886316U (en) | Full -automatic whirl of hydraulic control hydrocone type deposits device | |
| CN112999742B (en) | City throttle waste fitting discharging | |
| US6321916B1 (en) | Liquid clarification tank | |
| CN215026264U (en) | Assembled sand remover |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |