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Novel river channel dredging device

A dredging device and river channel technology, applied in the direction of mechanically driven excavators/dredgers, etc., can solve problems such as river channel sedimentation, achieve the effects of enhancing drag force, reducing pipeline resistance loss, and simple operation

Inactive Publication Date: 2015-01-07
HUNAN UNIV OF TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problem of river silt deposition, thereby designing a river dredging device

Method used

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  • Novel river channel dredging device
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Embodiment Construction

[0015] Below in conjunction with accompanying drawing, the present invention is further described: as Figure 1-2 As shown, a river dredging device includes a stirring assembly, a suction assembly and a lifting assembly. The stirring component and the suction component are fastened by threads; the suction component and the lifting component are connected by flanges. The stirring assembly includes a pulsed water jet nozzle (10), a water pipe joint (11) and a support plate (12), and the suction assembly includes a slurry suction pipe (9), a lower pump body (8), a chamber cover (6) and An annular air chamber is formed between the upper pump body (5), the lower pump body (8) and the cavity cover (6), and the outer conical surface of the lower pump body (8) and the upper conical surface of the upper pump body cooperate with each other to realize annular air intake. The support frame (12) is uniformly distributed radially on the outer surface of the cavity (6).

[0016] The inlet ...

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Abstract

The invention discloses a novel river channel dredging device which mainly comprises a lifting pipe, an air lifting head and a pulse water jetting device. The working process is as follows: loosening and crushing a mud bed at the bottom of a river by utilizing the pulse water jetting device, and pumping the mud by using the air lifting head and conveying the mud to an appointed region by the lifting pipe. The scheme advantages are as follows: as gas is regarded as a working medium, effects of air lifting and a jet pump are achieved, lifting capability of a system is enhanced greatly, and because of gas permeation, pipeline resistance loss is reduced; as self-vibrating pulse water jetting nozzles are reasonably arranged around to stir and impact hardened clod, an underwater pressing effect can be removed and drag force applied to solids also can be increased. According to the invention, the novel river channel dredging device is simple in structure, convenient to operate and strong in practicality; as the novel river channel dredging device per se has no moving part, the novel river channel dredging device is safe and reliable; the novel river channel dredging device has important significance in increasing comprehensive capability and technical level of river channel dredging projects in China.

Description

technical field [0001] The invention relates to a new type of desilting device, in particular to a device for dredging a river channel by combining a pneumatic lifting system and a pulsed water jet device. Background technique [0002] my country has a vast territory and numerous rivers, and the major rivers mainly play the role of shipping and flood relief. In recent decades, with the rapid development of industry, the ecological environment has been destroyed, soil erosion has intensified, resulting in serious siltation of rivers, lakes, reservoirs, and ponds, and the flood control capacity of some water systems has been severely weakened. From June 12 to 18, 1994, heavy rains fell in the Xiangjiang River Basin and severe floods occurred, causing direct economic losses of 4.48 billion yuan, equivalent to 52% of the province's local fiscal revenue in 1994 [1] . In 1998, the Yangtze River flooded the entire basin, and the people of Hunan were also deeply affected. From 20...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F3/88
Inventor 胡东唐川林燕青
Owner HUNAN UNIV OF TECH
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