JPS6240953Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the improvement of so-called drain gates, and particularly relates to a structure of the drain gate that can take proactive measures to drain water while ensuring sealing performance.

In order to quantitatively take out the sand stored in the gate, the gate's sand drainage hole must be sealed to the extent that the sand does not leak, and the water must be drained efficiently to remove the water contained in the sand. However, the two conditions are contradictory: sealing performance and drainage performance, and from this point of view, there has been no ideal drainage gate in the past.

For example, in the drainage gate 1 shown in FIG. 1, the gate main body 2 has a roughly mortar-like structure, the upper part of which is open for introducing sand, and the lower part of the gate body 2 having a sand drainage hole 3 for taking out the sand. is provided. One end of a rubber plate 4 having a width that can completely cover the sand removal hole 3 is fixed to the side surface of the gate body 2.

A pair of pins 5, 5 are fixed to the left and right sides of the gate body 2, and a pair of fan-shaped swing plates 6, 6 are attached to be able to swing freely around the pair of pins 5, 5 (one side (The rocking plate 6 is located on the back side of the rocking plate 6 shown in the figure), the pair of rocking plates 6, 6 are integrally connected by a bottom plate 7 having an arcuate cross section. It has a large number of rotatable rollers 8 arranged perpendicular to the plane of the paper in FIG.

FIG. 1 shows a state in which the rocking plate 6 is opened halfway around the pin 5, and a state in which the sand removal hole 3 is opened about half way. In this state, when the rocking plate 6 is rocked clockwise as shown by the arrow 9, the roller 8 gradually closes the sand removal hole 3, and is pushed by the roller 8 until it hangs down. rubber plate 4
is closed along the sand removal hole 3, and eventually the rubber plate 4 completely closes the sand removal hole 3. At this point, the rubber plate 4 is pressed against the end face of the sand removal hole 3 by a large number of rollers 8, so that the sealing performance is extremely good. A completely sealed state can be obtained without causing any twisting.

Therefore, while there is no inconvenience such as the sand easily spilling out from the closed sand extraction hole 3, the water contained in the sand accommodated in the gate body 2 cannot flow out, and furthermore, such water does not leak out from the sand. Since the specific gravity is higher than that of sand, most of the water collects near the sand removal hole 3, and the moment the rocking plate 6 is swung to open the gate, a large amount of water and sand flows out, and the amount of sand alone is reduced. There was a drawback that it was not possible to extract specific information.

In addition, in conventional drain gates, a large number of drain holes 10 are bored on the side of the gate body 2 to release water from these holes.
0 is formed with a relatively small diameter to prevent sand from flowing out.
Clogging occurs due to intrusion of sand, resulting in poor drainage efficiency, and if too many such drainage holes 10 are provided in the gate body 2, the strength of the gate body 2 itself will decrease, causing problems.

Therefore, the purpose of the present invention is to provide a drainage gate that can efficiently drain water accumulated in the vicinity of the sand extraction hole, that is, at the bottom of the gate body, while ensuring the sealing performance of the sand extraction hole portion of the drainage gate. The purpose and gist thereof is to provide a drainage gate that can sealingly close a sand drainage hole provided at the bottom of a substantially mortar-shaped gate body,
A water drainage gate structure is provided in which a water passage hole is opened in the side plate of the gate body above the sand drainage hole, and an overflow passage directed upward is connected to the water passage hole.

Next, embodiments embodying the present invention will be described with reference to the attached drawings starting from FIG. 2 to provide an understanding of the present invention.

Here, FIG. 2 is a side view of a drain gate that is an embodiment of the present invention, and FIG. 3 is a front view of the same drain gate.

Note that the same reference numerals are used for elements common to those shown in FIG.

In these figures, the gate main body 11 has a substantially mortar-like shape that expands upward, and has a sand receptacle 12 that expands in the shape of a trumpet at the top. The sand tray 1
2, a large number of drainage holes 13 are bored in a scattered manner over the entire circumference.

At the bottom of the gate body 11, a rocking plate 6 similar to that shown in FIG. The rubber plate 4 has a sand removal hole 3 provided at the lower end of the gate body 11 at its lower part.
occlusion via.

On the left and right swing plates 6 and 6, there is a forked arm 17 fixed to the tip of a rod 16 of a power cylinder 15 swingably attached to the base 14.
are swingably connected via a pin 18.

A water passage hole 19, which is much larger than the water drain hole 13, is formed in the lower side surface of the gate body 11, and this water passage hole 19 is formed in the side plate portion 1 of the gate body 11.
1a and an overflow passage 21 surrounded by a dome-shaped plate 20 fixed to the side plate portion 11a. This overflow passage 21 is
It is oriented upward from the water passage hole 19 and has an opening 22 at its upper end.

In addition, 23 is a vibrator attached to the gate body 11, and when a large amount of water-containing earth and sand is put into the gate body 11, a part of the water contained in the earth and sand in the sand receiver 12 is removed from the drainage hole 13. It leaks outside, but
Most of the water has a heavy specific gravity, so it concentrates below the gate main body 11, flows into the overflow passage 21 through the water passage hole 19, and then flows into the overflow passage 21.
1 and flows out of the gate body 11 through the upper opening 22 of the gate body 11 .

Note that the sand thrown into the gate body 11 blocks the water passage hole 19 and a part of it enters into the overflow passage 21;
Since it is directed upward, it does not reach the point where it flows out through the overflow passage 21 to the outside.

Therefore, by appropriately adjusting the position of the water passage hole 19 and the position of the upper opening 22 of the overflow passage 21, the level of water drained through the overflow passage 21 can be adjusted.

In this example, water above the position of the opening 22 flows through the large water passage hole 19 and the overflow passage 2.
1 to the outside through the opening 22.
Water located at a lower position cannot be discharged from the opening 22, but the amount of such water is small, and this water flows between the sand removal hole 3 and the rubber plate 4 that closes it. Since the sand flows out through a small gap formed in the gate body 11, all of the moisture contained in the sand supplied into the gate body 11 is quickly discharged, and the sand itself is not discharged along with this discharge. Therefore, it becomes possible to take out a fixed amount of sand from the sand removal hole 3.

When taking out sand in this way, the power cylinder 15 is operated and the rod 16 is moved forward and backward to swing the rocking plate 6 around the pin 5, and the water drain gate shown in FIG. This is done by opening and closing the sand removal hole 3 in the same manner.

As described above, the present invention provides a drainage gate that is capable of sealingly closing a sand drainage hole provided at the bottom of a roughly mortar-shaped gate body, with water passage holes in the side plate of the gate body above the sand drainage hole. The structure of the drain gate is characterized by having an overflow passage connected to the water hole and oriented upward, which improves the sealing performance of the drain gate while also reducing the amount of water contained in the sand. This method was able to provide a drainage gate that can quickly drain water, but there is no problem such as a large amount of water flowing out together with the sand when the gate is first opened, which obstructs the quantitative removal of sand. Avoided.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a conventional drain gate, and FIGS. 2 and 3 are a side view and a front view of a drain gate according to an embodiment of the present invention. Explanation of symbols, 3...Sand removal hole, 4...Rubber plate, 5
... Pin, 6 ... Rocking plate, 8 ... Roller, 11 ...
...Gate body, 12...Sand receiver, 15...Power cylinder, 19...Water hole, 21...Overflow passage, 22...Opening.

Claims (1)

[Scope of utility model registration request] In a drainage gate that can sealably close a sand drainage hole provided at the bottom of a roughly mortar-shaped gate body, a water passage hole is opened in the side plate of the gate body above the sand drainage hole, and A drain gate structure characterized by having a continuous overflow passage directed upward.