DE1962272U - DEVICE FOR COLLECTING AND TAKING SEDIMENT SAMPLES FROM WATERS. - Google Patents

Description

RA.210 318-17.4.67

Dr. med Karl Aurand, Berlin 38, Im Schlachtensee 94 Dipl.-Ing. Horst Behrens, Munich 19, ETederlingerstr. 1o1

Device for collecting and taking sediment samples from water

As part of the investigation of bodies of water, especially surface waters on chemical, "biological and other components, the determination of the composition of the with The solids in contact with the water play a role "The measurement of radioactivity has recently become particularly important such solids, since most of the radionuclides are found in those suspended in the water and at the bottom of the water Enrich solids. For the investigations, solid samples must be taken from the bottom of the water.

There are devices "known with which such sampling can be carried out. These devices preferably work on the principle of grab spoons or excavator shovels. A disadvantage of this method can be seen in the fact that in the samples taken in this way, proportions of superficial and deeper layers in undefined, quantitative proportions

zextlicfi,

hold are. Furthermore, these samples are to be viewed as random samples. The disadvantages can partly be avoided by the fact that the sampling in a likewise known manner with devices which leave the structure of the samples unchanged and allow subsequent separation. However Such devices are very complex and depending on the subsoil conditions not always usable.

With all "known devices" solid samples are obtained, which consist of different parts with "different origins". However, it can be for numerous Investigations can be beneficial at a "specific time" or in a "certain period of time fresh to the bottom of a body of water sedimented solids exclusively capture.

For this purpose, according to the invention on the basis of a Water body designed a gate direction, the pesticides sedimenting in the laying period on a "certain area catches and saves. Thus, through the continuous collection over the sample period, an average - sample received.

A possible embodiment of a sampling device for the stated purpose is shown in FIG. On a preferably square base plate 1, the edge of which 1a to Anchoring is angled down, "is a smaller, upwardly open box 2, in which the solids sediment be able. To avoid swirling out sediment Solid from the box 2 by the water flow is the box 2 through a removable grate 3 in numerous Adjacent, equally sized square and facing upwards open chambers 4 divided. An annular, exchangeable weight 5 lies around the box 2 on the base plate 1, that to fix the sampling device on the ground; of the water and depending on the subsoil and current conditions different degrees of difficulty can be chosen. For lowering the sampling device to the bottom of the body of water and also for catching up are attached to the four corners of the base plate 1 cords 6 above the goal direction in a Eyelet 7 are united. For emptying the sampling device in a sample bottle is below one of the chambers 4 irker bottom plate 1, which is also the bottom of the box 2, a circular opening 8 is provided, which can be closed by a closure piece shown in FIG. the The diameter of the opening 8 is smaller * than the sides of the chambers 4 are long. The locking mechanism is pushed upwards out of the Chamber protruding stem 9, on which a round disc 1o fitting into the opening 8 is attached at the lower end.

Above the disk 1o and on the handle 9 there is a square plate 11 made of elastic material, which fits exactly into the chambers 4 and ensures that the opening 8 is sealed. For this purpose the plate 11 is printed by a smaller square plate 12 of solid material, which is also positioned immediately above the elastic plate 11 on the stem 9 with respect en & hand Öffnu ^. 8 The pressure is provided by a detachable rubber band 13 'which is stretched over the entire device and acts on the handle 9 from above. The closure piece can also be used to wipe out pesticides deposited on the walls of the individual chambers 4. To ventilate the space under the base plate 1, several small openings 14 are provided in this outside of the box 2.

The preferred materials for the sampling device are Embossed plastics.

Claims (4)

P.A.210 31Μ7Λ6 / claims 1. Device for collecting and removing from the bottom of G-water sedimenting solids through an upwardly open one placed on a base plate (1). Box (2) for a "specific collection period is laid out on the bottom of a body of water, where "at the box (2) to avoid the swirling out of collected Pests through a removable grid (j5) is divided into numerous linzelkammem (4). 2. Apparatus according to claim 1, characterized in that it is for adaptation to different underground and Flow conditions by an exchangeable weight (5) can be “weighted down differently”. 3 «Apparatus according to claim 1, characterized _f in that the hand (1a) of the bottom plate (1) is angled to anchor the sampling device downwardly and for venting the space under the t4 # if base plate (1) in the outside of the box (2 ) Openings (14) are provided. 4. The device according to claim 1, characterized in that for emptying the sample in a sample bottle on Bottom of the box (2) an opening (8) is located during the collecting process is closed by a locking piece which, thanks to its design, can also serve as a cleaning wiper during emptying.