CN111058506A - Floating type underwater air-lift sand pumping device - Google Patents

Abstract

The invention relates to a floating underwater air-lift sand pumping device, which belongs to the technical field of hydraulic and hydroelectric engineering and comprises a floating platform, a sand discharge main pipe, a balancing weight, an air inlet fork pipe, a connecting pipe and an air compressor; a sand discharge outlet pipe is formed by bending the upper part of the sand discharge main pipe, a floating flat is arranged at the upper part of the sand discharge main pipe and close to the sand discharge outlet pipe, and a balancing weight and an air inlet fork pipe are arranged at the lower part of the sand discharge main pipe; the air compressor is connected with the air inlet fork pipe through a connecting pipe; the device has simple structure, convenient use, low cost and easy popularization and use, and can greatly improve the effects of sand pumping and sand discharging.

Description

Floating type underwater air-lift sand pumping device

Technical Field

The invention belongs to the technical field of hydraulic and hydroelectric engineering, and particularly relates to a floating type underwater air-stripping sand pumping device.

Background

In hydraulic and hydroelectric engineering, such as gates of hydraulic buildings such as a hydroelectric engineering water inlet, a tail water gate, a pump station maintenance gate, a check gate and the like, the gates need to be kept in a closed state in a specific time period, and the purpose is to ensure that other structures are constructed under a water-free condition and the gates cannot be actuated for a long time before the construction of other related projects is completed; the other aspect is to cut off the water flow during the operation period and ensure that the water level is raised to facilitate the adjustment of the storage capacity; however, in the later construction period and the operation period, the tasks of guiding, cutting, shunting and the like are generally required to be undertaken, and the door closing and the water retaining are required to be carried out within a long period of time.

However, because the gate is fixed under water for a long time, and the gate can not be moved regularly to wash sand, silt in the river is continuously deposited in front of the gate, under the action of silt lateral pressure and underwater silt cohesive force, the gate lifting force can be increased by several times when the gate is started in the later stage, and even the phenomenon of difficult starting often appears, for this reason, a series of engineering facilities are usually used for sand pumping and desilting treatment, and the method mainly comprises the following steps: the device has the advantages that silt treatment measures such as high-pressure water gun flushing, sand dredging of a sand dredger, mud suction of a mud suction pump and the like are taken, but in the actual operation process, the device has the problems of low efficiency, low yield, incapability of reliably working for a long time, high energy consumption, high operation cost and the like.

Disclosure of Invention

The invention aims to provide a floating type underwater air-lifting sand pumping device which is simple in structure, convenient to construct, low in cost and easy to popularize by combining the characteristics of gate arrangement of hydraulic buildings, silt sedimentation and engineering practice.

In order to solve the technical problems, the invention is realized by the following technical scheme:

a floating underwater air-lift sand pumping device is characterized by comprising a floating flat body, a sand discharge main pipe, a balancing weight, an air inlet fork pipe, a connecting pipe and an air compressor; the upper part of the sand discharge main pipe is bent to form a sand discharge outlet pipe, a floating flat is arranged at the upper part of the sand discharge main pipe and at a position close to the sand discharge outlet pipe, a balancing weight and an air inlet fork pipe are arranged at the lower part of the sand discharge main pipe, and an air outlet of the air inlet fork pipe is bent upwards in the sand discharge main pipe; the air compressor is connected with the air inlet fork pipe through a connecting pipe.

Preferably, an air volume adjusting valve for adjusting the air volume is arranged at the air outlet of the air compressor.

Preferably, the sand discharge outlet pipe is provided with a detachable plug with the outer diameter being the same as the inner diameter of the sand discharge outlet pipe.

Preferably, the connection pipe is a pressure-resistant flexible pipe.

Preferably, the sand discharge main pipe and the air inlet fork pipe are galvanized seamless metal pipes or alloy pipes.

The using method of the invention is as follows: the lower end of the sand discharging main pipe is away from the gate sill by a certain distance to the gate, and is sunk into the river bed sludge under the action of the gravity of the pipeline counterweight block, the upper end of the sand discharging main pipe is fixed on the floating flat, before the main body structure sinks to the bottom, an air inlet fork pipe is manufactured from the lower end of the sand discharging main pipe along the pipe upwards at the position 1/10, and the air inlet fork pipe is connected with the connecting pipe; on the water surface, the other end of the connecting pipe is connected with an air compressor; after the pipeline connection is finished, the air compressor is started, compressed air continuously passes through the connecting pipe and the air inlet fork pipe and then is injected into the sand discharging main pipe, then flows upwards along the sand discharging main pipe and is flushed out from the sand discharging outlet pipe, negative pressure generated in the upward gas conveying process sucks slurry-shaped mixture consisting of silt, bottom sand and water, and slurry upwards flushes out of the sand discharging outlet pipe at a fixed speed along the steel pipe to finish sand pumping.

Compared with the prior art, the invention has the beneficial effects that: the sand and soil can be continuously conveyed and extracted, the conveying amount of the slurry can be adjusted by the air blowing amount of the air compressor, and the sand pumping amount in unit operation time is far higher than that of a dredger; compared with a common sand suction pump, the sand pumping operation is more stable and reliable, the sand pumping operation cannot be stopped due to the suction of foreign matters, the effective operation time is greatly prolonged, even if the foreign matters are sucked, the sand discharging main pipe can be properly lifted, the sand discharging outlet pipe is blocked by the plug, the foreign matters are blown out in a blowing mode, and the time consumed for fault treatment is far shorter than that consumed by the sand suction pump; the pressure-resistant flexible pipe is more convenient and firm to use and has stronger controllability; in addition, the invention has the advantages of simple structure, low cost, convenient use, low energy consumption, easy popularization and use and the like.

Drawings

Fig. 1 is a schematic structural view of the floating underwater air stripping sand extractor of the present invention.

In the figure, 1-floating flat, 2-sand discharging main pipe, 3-air inlet fork pipe, 4-balancing weight, 5-connecting pipe, 6-air compressor and 7-sand discharging outlet pipe.

Detailed Description

The present invention will be described in further detail with reference to examples.

It will be appreciated by those skilled in the art that the following examples are illustrative of the invention only and should not be taken as limiting the scope of the invention. The specific techniques, connections, conditions, or the like, which are not specified in the examples, are performed according to the techniques, connections, conditions, or the like described in the literature in the art or according to the product specification. The materials, instruments or equipment are not indicated by manufacturers, and all the materials, instruments or equipment are conventional products which can be obtained by purchasing.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present.

In the description of the present invention, "a plurality" means two or more unless otherwise specified. The terms "inner," "upper," "lower," and the like, refer to an orientation or a state relationship based on that shown in the drawings, which is for convenience in describing and simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be understood broadly, and may be, for example, an anchored connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention are understood according to specific situations.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Examples

A floating underwater air stripping sand pumping device is characterized by comprising a floating platform 1, a sand discharge main pipe 2, a balancing weight 4, an air inlet fork pipe 3, a connecting pipe 5 and an air compressor 6; a sand discharge outlet pipe 7 is formed by bending the upper part of the sand discharge main pipe 2, a floating flat 1 is arranged at the upper part of the sand discharge main pipe 2 and close to the sand discharge outlet pipe 7, a balancing weight 4 and an air inlet fork pipe 3 are arranged at the lower part of the sand discharge main pipe, and an air outlet of the air inlet fork pipe 3 is bent upwards in the sand discharge main pipe 2; the air compressor 6 is connected with the air inlet fork pipe 3 through a connecting pipe 5; an air volume adjusting valve for adjusting air supply volume is arranged at an air outlet of the air compressor 6; a detachable plug with the outer diameter same as the inner diameter of the sand discharge outlet pipe 7 is arranged on the sand discharge outlet pipe 7; the connecting pipe 5 is a pressure-resistant flexible pipe, in particular a pressure-resistant rubber pipe with the inner diameter of 90 mm; the sand discharging main pipe 2 and the air inlet fork pipe 3 are galvanized steel pipes, and the inner diameter of the sand discharging main pipe 2 and the outer diameter of the air inlet fork pipe 3 are respectively 300mm and 90 mm; after the pressure-resistant rubber pipe is sleeved on the air inlet fork pipe 3, the pressure-resistant rubber pipe is fastened through two groups of hoops.

The using method of the invention is as follows: the lower end of the main sand discharging pipe 2 is away from the gate sill by a certain distance to the gate, and is sunk into the river bed sludge under the action of the gravity of the pipeline balancing weight 4, the upper end of the main sand discharging pipe 2 is fixed on the floating flat 1, before the main body structure sinks to the bottom, an air inlet fork pipe 3 is manufactured from the lower end of the main sand discharging pipe 2 along the pipe upwards 1/10, and the air inlet fork pipe 3 is connected with a connecting pipe 5 and is fastened by two groups of hoops; on the water surface, the other end of the connecting pipe 5 is connected with an air compressor 6; after the pipeline connection is finished, the air compressor 6 is started, compressed air continuously passes through the connecting pipe 5 and the air inlet fork pipe 3 and then is injected into the sand discharging main pipe 2, then flows upwards along the sand discharging main pipe 2 and is flushed out from the sand discharging outlet pipe 7, negative pressure generated in the gas upward conveying process sucks slurry-shaped mixture consisting of silt, bottom sand and water, and slurry upwards flushes out of the sand discharging outlet pipe 7 at a fixed speed along the steel pipe to finish sand pumping.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (5)

1. A floating underwater air stripping sand pumping device is characterized by comprising a floating platform (1), a sand discharging main pipe (2), a balancing weight (4), an air inlet fork pipe (3), a connecting pipe (5) and an air compressor (6); a sand discharge outlet pipe (7) is formed by bending the upper part of the sand discharge main pipe (2), a floating flat (1) is arranged at the upper part of the sand discharge main pipe (2) and close to the sand discharge outlet pipe (7), a balancing weight (4) and an air inlet fork pipe (3) are arranged at the lower part of the sand discharge main pipe, and an air outlet of the air inlet fork pipe (3) is bent upwards in the sand discharge main pipe (2); the air compressor (6) is connected with the air inlet fork pipe (3) through a connecting pipe (5).

2. The floating underwater air-lifting sand pumping device as claimed in claim 1, wherein: and an air volume adjusting valve for adjusting air supply volume is arranged at the air outlet of the air compressor (6).

3. The floating underwater air-lifting sand pumping device as claimed in claim 1, wherein: and a detachable plug with the outer diameter the same as the inner diameter of the sand discharge outlet pipe (7) is arranged on the sand discharge outlet pipe (7).

4. The floating underwater air-lifting sand pumping device as claimed in claim 1, wherein: the connecting pipe (5) is a pressure-resistant flexible pipe.

5. The floating underwater air-lifting sand pumping device as claimed in claim 1, wherein: the sand discharge main pipe (2) and the air inlet fork pipe (3) are galvanized seamless metal pipes or alloy pipes.

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