JPS6241236Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a sludge collector for collecting sludge deposited on the ocean floor, lake bottom, etc.

Sediment in shallow seas, lakes, ponds, and swamps, so-called sludge, accumulates year after year and forms layers. When inspecting or observing such sludge, it is necessary to extract a specimen in its natural state.

By the way, there are conventional methods for extracting the above specimens, such as diving underwater to collect mud using a diver and collecting mud using a shovel, but neither method allows the specimen to be extracted in its natural state. There is a drawback.

The purpose of this invention is to solve the above-mentioned drawbacks and to provide a slurry sampler that can extract sedimented specimens from the water surface in a natural state.

This idea involves inserting an inner tube with an open bottom inside a rectangular sludge sampling frame attached to the tip of the rod, sticking the lower part of the sludge sampling frame into the accumulated sludge, and positioning the lower part of the inner tube within the sludge. Thereafter, a movable shutter provided on one side of the outer circumference of the inner tube is lowered, and the lower end opening of the inner tube is closed by this shutter.

An embodiment of this invention will be described below with reference to the accompanying drawings.

As shown in the figure, there is a flange 2 at the lower end of the rod 1.
is fixed, and the upper flange 4 of the square sampling frame 3 is attached to the lower surface of the flange 2 with bolt nuts 5.

Note that the rod 1 may be a single rod, but it may also be possible to add a required number of rods by means of screw connection or the like.

A striking weight 6 is slidably fitted on the outside of the rod 1, and a first operating string 7 connected to the weight 6 extends upward along the rod 1, and the upper end of the first operating string 7 is operated. By pulling up the weight 6 and letting it fall due to gravity, an impact force can be applied to the flange 2 of the rod 1.

Note that the first operating string 7 may be pulled down manually, but it is also possible to pull down the first operating string 7 by attaching a reel to the upper end of the rod 1.
It may be wound up using this reel.

The rectangular mud sampling frame 3 has an open bottom, and the lower ends of a pair of opposing side plates 8 protrude downward and have pointed tips. The lower inner surface of this side plate 8 is inclined toward the tip, and a receiving portion 9 is formed at the upper part of the inclined surface.

The inner tube 10 inserted inside the rectangular sampling frame 3 has a flange 11 on the upper outer periphery, and this flange 11 connects the flange 2 of the rod 1 and the sampling frame 3.
It is clamped by flanges 4.

An inspection window 1 is provided on a part of the outer circumference of the inner tube 10.
2 is formed, and this window 12 is covered with a transparent plate 13 such as a glass plate. The lower portions of a pair of opposing side plates of the inner tube 10 protrude downward and have a semicircular outer periphery, and the lower side of this semicircular portion 14 is supported by the receiving portion 9. Also circular part 1
A semicircular rail 15 is provided on the inner surface side of 4.

Both sides of the tip of the elastic shutter 16 provided on one side of the outer circumference of the inner tube 10 are connected to the semicircular rail 1.
When the elastic shutter 16 is moved in the axial direction of the inner tube 10, the elastic shutter 16 moves along the rail 15 and closes the lower opening of the inner tube 10.

The upper part of the elastic shutter 16 is the inner tube 1
The tube 10 is inserted into a support frame 17 provided on a part of the outer periphery of the tube 10 and is supported movably in the axial direction of the tube 10.
The opening/closing operation mechanism 2 is attached to the bent piece 18 formed at the upper end.
The lower end of the connecting rod 21 of 0 is screwed together.

The connecting rod 21 is inserted into a guide tube 22 that stands up from the flange 2 at the lower end of the rod 1, and the guide tube 2
A push spring 23 provided inside the connecting rod 2
1 is pressed downward. Also, the connecting rod 21
A second operating string 24 is connected to the upper end of the handle. The second operating string 24 extends upward along the rod 1, and its end connects to a reel 2 attached to the upper end of the rod 1.
It is designed to be wound at 5.

The sludge sampler shown in the embodiment has the above-mentioned structure.Next, the collection of sludge using this sludge sampler will be described.

Now, by operating the reel 25, the second operating string 24
When the inner tube 10 is wound up, the connecting rod 21 moves upward against the elasticity of the push spring 23, and the elastic shutter 16 also moves upward, opening the lower opening of the inner tube 10.

In such a state, the rod 1 is immersed in water and the lower end of the sampling frame 3 is pressed against the accumulated sludge, and then the first operation string 7 is operated to release the striking weight 6.
When this gravity fall is repeated, the striking weight 6 applies downward pressure to the flange 2 at the lower end of the rod 1, so that the lower end of the sludge collection frame 3 enters into the sludge.

Since an inner tube 10 is inserted inside the mud sampling frame 3, this inner tube 10
The lower end of the tube also enters into the sludge, and as a result, the sludge enters inside the inner tube 10.

After sticking the lower end of the inner tube 10 into the sludge by a predetermined amount, operate the reel 25 to
When the operating string 24 is unwound, the connecting rod 21 is moved downward by the restoring force of the push spring 23, and the lower opening of the inner tube 10 is closed by the movement of the elastic shutter 16 along the rail 15. By pulling up rod 1 in this state,
A predetermined amount of specimen can be collected.

Note that when closing the lower opening of the inner tube 10, if the elastic shutter 16 does not move smoothly and stops midway through its movement, the reel 25 is repeatedly wound and unwound to close the elastic shutter 16. imparts axial impact resilience to.

Although not shown in the figure, if a gasket is attached to the inside of the rail 15 to maintain watertightness when the elastic shutter 16 fully closes the lower opening of the inner tube 10, the sample can be collected inside the inner tube 10. It is possible to prevent the sample from being discharged together with water.

The collected specimen is observed through an inspection window 12 provided in the inner tube 10, and taken out from the inner tube 10 if necessary. When taking out a specimen, the flanges 2 and 4 are uncoupled, the inner tube 10 is taken out, and the tube 10 is turned upside down, or the elastic shutter 16 is pulled up and taken out from the lower opening.

As shown in FIG. 5, the side plate 10' having the inspection window 12 of the inner tube 10 is fitted into the inner tube 10, so that the sample can be easily taken out and the sample can be tested easily.

As shown in FIG. 4, when a pressurizing lid 26 having a drainage hole 27 is set on the upper opening of the inner tube 10 and the pressurizing lid 26 is moved in the axial direction, the water accumulated on the specimen in the tube 10 is drained. Since it escapes upward through the hole 27, the specimen can be fixed in a stacked state.

Note that the drain hole 27 may be opened and closed by the swingable specimen 28.

In the case of the example, the impact force of the striking weight was used to pierce the sludge collection frame into the sludge, but
The rod 1 may also be pressurized in the axial direction.

As described above, in this invention, the sludge collecting frame is stuck into the sludge and the lower opening of the inner tube is closed by moving the elastic shutter in the axial direction, so that the sludge that accumulates can be collected in its natural state. In addition, since the slurry sampling frame is attached to the lower end of the rod, samples can be collected from above the water surface, which is extremely convenient.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the mud collecting device according to this invention, Fig. 2 is a vertical cross-sectional front view showing the lower part of the same as above with a part omitted, and Fig. 3 is a longitudinal cross-sectional view of the same as above with a part omitted. A side view, FIG. 4 is a longitudinal sectional front view of the water draining pressurized lid set inside the inner tube, and FIG. 5 is a sectional view taken along the line V-V in FIG. 2.
FIG. 6 is a plan view of FIG. 4. DESCRIPTION OF SYMBOLS 1...Rod, 3...Soil sampling frame, 10...Inner tube, 14...Semicircular portion, 15...Rail, 16...Elastic shutter, 20...Opening/closing operation mechanism.

Claims (1)

[Scope of utility model registration request] A square sampling frame attached to the tip of the rod,
It consists of a rectangular inner tube with an open bottom inserted into the sampling frame, an elastic shutter supported on one side of the outer periphery of the tube and movable in the axial direction of the tube, and an opening/closing mechanism for the elastic shutter. , wherein a semicircular portion protruding downward is provided at the lower end of the opposing side plate of the inner tube, and a semicircular rail for guiding both sides of the shutter is provided on the inner surface of the semicircular portion. Mud pot.