CN111960482B

CN111960482B - Siphon decanter and blue algae collector

Info

Publication number: CN111960482B
Application number: CN202010730069.5A
Authority: CN
Inventors: 曹雪山; 曹怀玉; 李一平
Original assignee: Hohai University HHU
Current assignee: Hohai University HHU
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2023-02-24
Anticipated expiration: 2040-07-27
Also published as: CN111960482A

Abstract

The invention discloses a siphon decanter and a blue algae collector, and the siphon decanter comprises a water inlet main pipe, a U-shaped pipe, an exhaust valve, a water collecting pipe and a plurality of water inlet short pipes, wherein the U-shaped pipe comprises a first pipe and a second pipe, the upper part of the first pipe is connected with the water inlet main pipe, the top of the second pipe is connected with the exhaust valve, the upper part of the second pipe is communicated with the water collecting pipe, and the plurality of water inlet short pipes are communicated with a pipe body of the water collecting pipe. The blue-green algae collecting device can collect blue-green algae at different depths by arranging the water inlet short pipes with different lengths, so that the efficiency of fishing the blue-green algae by the blue-green algae collecting device is effectively improved; the water inlet main pipe is connected with a water pump water suction pipe in the blue algae collector, the filter screen is movably connected at the joint, the disassembly and the maintenance are convenient to clean, the whole structure is reasonable in design, and the use is convenient.

Description

Siphon decanter and blue algae collector

Technical Field

The invention belongs to the technical field of sewage treatment, and particularly relates to a siphon decanter and a blue algae collector.

Background

As the domestic sewage and the industrial and agricultural wastewater bring N, P and other pollutants into lakes, the eutrophication degree of the water body of the lakes is continuously intensified, and the prevention and the treatment of the eutrophication of the water body become a worldwide problem. The eutrophication of the water body easily causes the blue algae outbreak, generates water blooms and red lakes, causes the problems of water body anoxia, fish death and the like, and algae can release algal toxins to endanger the water safety. The removal of the blue algae not only can improve the water landscape and promote the water ecological balance, but also can remove pollutants such as N, P and the like in the water and reduce the eutrophication degree of the water.

Most blue algae collectors of the blue algae salvage ships in the market are provided with only one water inlet, and under the condition of certain total flow, the water inlet speed is high, underwater sediment sludge is easy to stir, and subsequent treatment operation is interfered. The siphon decanter is adopted to collect algae water, the total flow is born by a plurality of sub-flows through the plurality of short water inlet pipes, the water inlet speed is reduced, and the water pump faults caused by sludge interference are reduced. The decanting depth of the water inlet pipe of the existing blue algae collector is fixed, blue algae located at different depths cannot be collected, meanwhile, the gravity center of the device gradually sinks along with the fact that the algae-laden water mixture continuously enters the blue algae collector, the decanting depth of the decanting device is correspondingly increased, the device cannot be guaranteed to be located at a proper height in the working process, and blue algae water with high concentration can be collected. And the blue algae are only gathered on the surface layer of the river under ideal conditions, and the distribution condition of the blue algae is influenced by the wind speed and the water flow speed, so that the efficiency of fishing the blue algae is limited.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, provide the siphon decanter with the water inlet short pipes with different lengths and improve the efficiency of the blue algae collector in salvaging blue algae.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

in a first aspect, the invention provides a siphon decanter, which comprises a water inlet main pipe, a U-shaped pipe, an exhaust valve, a water collecting pipe and a plurality of water inlet short pipes, wherein the U-shaped pipe comprises a first pipe and a second pipe, the upper part of the first pipe is connected with the water inlet main pipe, the top of the second pipe is connected with the exhaust valve, the upper part of the second pipe is communicated with the water collecting pipe, and the water inlet short pipes are communicated with a pipe body of the water collecting pipe; the length difference of the adjacent water inlet short pipes is 2-4 cm.

With reference to the first aspect, further, the connection mode of the short water inlet pipe and the water collecting pipe is threaded connection, sliding connection or welding.

Furthermore, the diameter range of the water inlet short pipe is 100-200 mm.

Further, the pipe diameter range of the U-shaped pipe is determined by the flow velocity and the design flow in the pipe and is set to be 150-300 mm.

Furthermore, the position of the water collecting pipe communicated with the second pipe is not lower than the connecting position of the water inlet main pipe and the first pipe.

Furthermore, the water inlet of the water inlet short pipe is positioned below the surface liquid level of the river.

Further, the decanter is made of stainless steel.

Furthermore, the water decanter can collect blue algae distributed 2-20 cm below the water surface.

In a first aspect, the invention provides a blue algae collector, which comprises the siphon decanter.

In combination with the first aspect, further, the blue algae collector comprises a water pump suction pipe, the water inlet main pipe is horizontally connected with the water pump suction pipe, and the joint is movably connected with a filter screen of 190-200 meshes.

Compared with the prior art, the invention has the following beneficial effects:

the siphon decanter provided by the invention is provided with the water inlet short pipes with different lengths, so that blue algae at different depths can be collected, and the efficiency of the blue algae collector in salvaging the blue algae is effectively improved; the water inlet main pipe is connected with a water suction pipe in the blue algae collector, the filter screen is movably connected at the joint, the disassembly and the maintenance are convenient to clean, the whole structure is reasonable in design, and the use is convenient.

Drawings

FIG. 1 is a schematic view of an overall configuration of a siphon decanter according to an embodiment of the present invention;

in the figure: 1. a water inlet main pipe; 2. a U-shaped tube; 2-1, a first tube; 2-2, a second tube; 3. an exhaust valve; 4. a water collection pipe; 5. a short water inlet pipe.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

Fig. 1 is a schematic view showing the overall structure of a siphon decanter according to an embodiment of the present invention, which mainly comprises a water inlet main pipe 1, a U-shaped pipe 2, an exhaust valve 3, and a water collecting pipe 4; the diameter of the water inlet short pipe 5 is about 100-200 mm, and blue algae distributed below the water surface by 2-20 cm can be collected. The pipe diameter of the U-shaped pipe 5 is determined by the flow velocity and the design flow in the pipe, and the diameter range is 150-300 mm.

The U-shaped pipe 2 comprises a first pipe 2-1 and a second pipe 2-2, wherein the upper part of the first pipe 2-1 is connected with one end of a water inlet main pipe 1, the top part of the second pipe 2-2 is connected with an exhaust valve 3, the upper part of the second pipe 2-2 is communicated with a water collecting pipe 4, and a plurality of water inlet short pipes 5 are communicated with a pipe body of the water collecting pipe 4;

one embodiment is as follows:

the length of one side of the adjacent water inlet short pipe 5, which is close to the U-shaped pipe 2, is the longest, the length of the water inlet short pipe 5, which is far away from the U-shaped pipe 2, is reduced in sequence, and the length difference of the adjacent water inlet short pipe 5 is 2-4 cm.

In another embodiment:

the water collecting pipe 4 of the siphon decanter is provided with 6-8 water inlet short pipes 5 with different lengths, one side of the adjacent water inlet short pipe 5 close to the U-shaped pipe 2 is shortest, and the lengths of the water inlet short pipes 5 far away from the U-shaped pipe 2 are sequentially increased. Each water inlet main pipe 1 of the siphon decanter is connected with 1U-shaped pipe 2, and each blue algae collector can be provided with 6-8U-shaped pipes.

When the blue algae collector is used, the water inlet main pipe 1 of the water decanter is horizontally connected with the water pumping pipe in the blue algae collector, a 200-mesh filter screen is arranged at the connection part, and the shortest water inlet short pipe of the blue algae collector in the whole working process is ensured to be positioned below the surface liquid level of a river.

After the water inlet stage begins, due to the action of hydrostatic pressure, an air seal is formed between the water inlet short pipe and the liquid level of the U-shaped pipe, and blue algae distributed at different depths of the river are sucked into the water inlet short pipe with a corresponding length. The center of the impeller of the water pump forms vacuum, and liquid is continuously pressed into the water pump under the action of liquid level pressure difference. The invention can improve the efficiency and the precision of the fishing of the blue algae, and increase the spatial area of the fishing according to the actual situation.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various improvements and modifications without departing from the technical principle of the present invention, and those improvements and modifications should be considered as the protection scope of the present invention.

Claims

1. The siphon decanter is characterized by comprising a water inlet main pipe, a U-shaped pipe, an exhaust valve, a water collecting pipe and a plurality of water inlet short pipes, wherein the U-shaped pipe comprises a first pipe and a second pipe, the upper part of the first pipe is connected with the water inlet main pipe, the top of the second pipe is connected with the exhaust valve, the upper part of the second pipe is communicated with the water collecting pipe, the water inlet short pipes are communicated with the pipe body of the water collecting pipe, the water inlets of the water inlet short pipes are positioned below the surface liquid level of a river, and the length difference of the adjacent water inlet short pipes is 2-4 cm; the water decanter can collect blue algae distributed 2-20 cm below the water surface;

the length of one side of the water inlet short pipe close to the U-shaped pipe is longest or shortest, and the length of the water inlet short pipe far away from the U-shaped pipe is respectively and correspondingly reduced or increased in sequence.

2. The siphonic decanter according to claim 1, wherein the inlet pipe stub is connected to the collector pipe by a threaded connection, a sliding connection, or a welded connection.

3. The siphonic decanter according to claim 1, wherein the inlet spud has a diameter in the range of 100 to 200mm.

4. The siphonic decanter according to claim 1, wherein the U-shaped tube has a tube diameter in the range of 150 to 300mm.

5. The siphonic decanter according to claim 1, wherein the water collection pipe communicates with the second pipe no lower than the point at which the water inlet manifold connects to the first pipe.

6. The siphonic decanter of claim 1, wherein the decanter is stainless steel.

7. A blue algae collector comprising the siphon decanter of any one of claims 1-6.

8. The blue algae collector of claim 7, comprising a water pump suction pipe, wherein the water inlet main pipe is horizontally connected with the water pump suction pipe, and the joint is movably connected with a 190-200 mesh filter screen.