Six-point-method horizontal type suspended sand collecting device

Abstract

The invention discloses a six-point-method horizontal type suspended sand collecting device, which comprises six sampling buckets. The six-point-method horizontal type suspended sand collecting device is characterized in that the upper part of each sampling bucket is connected with an electromagnetic controller; each electromagnetic controller is provided with an independent circuit used for controlling the corresponding sampling bucket. The six-point-method horizontal type suspended sand collecting device has the advantages that the one-time sequential sampling at six different positions of an entire water depth is realized; the work that a sampler needs to be continuously taken out from a water surface repeatedly for six times before is avoided; the windy shot possibility in a conventional sampler is avoided; the work efficiency is greatly improved; the service life of the device is prolonged; the aging phenomenon of equipment, which is caused by frequent beating, is avoided; after an electromagnetic system is adopted, the strength requirement on the device becomes low; part of structures can be replaced by adopting plastic; the overall weight of the device is lightened; the six-point-method horizontal type suspended sand collecting device is concise and convenient; meanwhile, the cost is also saved; a single-chip-microcomputer timer capable of realizing a timing function is added; the labor power and the time are saved; the influence which is caused to a sand sampling process due to a human factor is avoided.

Description

technical field [0001] The invention relates to a six-point horizontal suspended sediment collection device. Background technique [0002] Various sediment testing instruments in the world, no matter in developed countries or developing countries, so far, the common method of sampling and analysis by instrumental testing is the main method, because the proportion of suspended sediment in the transported sediment Therefore, the testing instruments for suspended sediment have received corresponding attention. According to the American Sediment Engineering Association on the basis of an extensive survey of 65 samplers used internationally before 1975, the various types of samplers used in the past and now are still divided into two categories: instantaneous and time-integrated. Among them, the instantaneous horizontal sampler is a kind of sampler commonly used in various countries from the 1920s to the early 1950s. After the 1950s, most countries stopped using it successively...

AI Technical Summary

Problems solved by technology

[0004] 1. Due to the need to constantly change the measured point and rely on heavy hammer to close the door to collect samples, it has the disadvantages of high labor intensity and long time

[0005] 2. For watersheds with large river depths, the huge impact force brought by the falling of the heavy hammer will easily break the connected steel wire ropes, and increasing the number of steel wire ropes will increase the cost

[0006] 3. The heavy hammer is often soaked in water, which is easy to rust and age, resulting in falling and hitting the connecting rod, which increases the probability that the door cannot be closed (commonly known as "empty gun") and increases the workload.

[0007] 4. Unable to overcome the influence of sediment pulsation, the instrument port disturbs the water sample, resulting in fluid deformation and separation of sediment particles

[0008] 5. Suspended sediment in a vertical profile needs to be sampled using the 6-point method. It is necessary to repeat the sampler into the water and hit it with a heavy hammer six times. In addition, relevant personnel need to operate the whole process during the sampling process, which is time-consuming and laborious.

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