JPS583860Y2 - Sand discharge equipment - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a sand removal facility that is installed to discharge earth and sand accumulated in a dam, settling basin, headrace channel, water tank, etc. together with water.

Various types of sand removal equipment have been proposed and implemented in the past, but most of them have a circular cross section and a slide gate, roller gate, tenter gate, etc. installed at the end or in the middle of the pipe. There is.

These gates are required to have a solid structure and reliable opening/closing operation, and are selected to have a structure similar to that used for dam water discharge and to accommodate people.

Therefore, door grooves, doorstops, trunnion bearings, etc. are indispensable, and the structure is inevitably complicated, resulting in the problem that civil engineering work related to these requires a considerable amount of time and labor.

This idea was made in view of the above-mentioned circumstances, and aims to provide a sand discharge facility that facilitates the gate structure and its manufacture, can be obtained at low cost, and can be installed easily and in a short construction period. It is intended for that purpose.

Hereinafter, embodiments of this invention will be described in detail based on the drawings.

In the drawing, 1 is the dam of the dam reservoir 2, 3 is a sand discharge pipe buried on the side of the dam 1, and its suction port 4 is disposed near the water bottom 2A, and the suction port 4 extends in the longitudinal direction of the sand discharge pipe 3. It has a long rectangular shape and is provided with a rectifying plate 5.

The main pipe 3A of the sand discharge pipe 3 has a circular cross section, and a flange 6 is provided at the end projecting downstream from the dam 1. A flange 8 fixed to is connected by bolts (not shown).

The sand discharge end pipes 7 are connected so that their negative sides are horizontal, and the side plate opening end faces are formed into one arcuate surface having a horizontal axis near the center of the flange 8 in the vertical direction. The cross section is reduced toward the opening end (Figs. 1 and 3).
(see Figures and Figure 4).

Reference numeral 9 denotes a radial tenter type opening/closing gate (hereinafter simply referred to as a tenter gate), in which reinforcing aggregate 11 is fixed to the curved convex surface of the arcuate surface of the skin plate 10, and gate arms 12 are fixed to both left and right ends of the curved concave surface 10A. This curved concave surface 10A is configured to shut off water.

The trunnion pin 13 at the other end of the arm 12 of the tenter gate 9 is supported by a trunnion pin receiver 14 mounted on the left and right front surfaces of the flange 8 at the center in the upper and lower directions, and is supported around the horizontal axis. It is made to rotate.

Reference numeral 15 denotes a gate opening/closing rod, the upper end of which is connected to the lower end of a piston rod 18 of a hydraulic cylinder device 17 for opening/closing operation disposed on the dam 1 so as to swing around a horizontal pin 16; the lower end is connected to the tenter gate 9. A horizontal pin 20 is attached to the connecting fitting 19 attached to the center of the upper surface of the upper end reinforcing aggregate 11.
are connected via.

Reference numeral 21 denotes side watertight rubber, which is attached to the curved concave surfaces 10A at both ends of the skin plate 10 of the tenter gate 9, and is attached to the outer surfaces of the side plates 7A and 7B of the sand discharge end pipe 7. It is adapted to come into contact with the plate 22 (see FIG. 5).

23 and 24 are upper watertight rubbers, and as shown in FIG. The upper watertight rubber 23 is attached to the lower side of the waterstop plate 25 protruding from the upper surface of the upper plate 7C, and the upper watertight rubber 23 is in contact with the waterstop plate 25, and the other upper watertight rubber 24 is attached to the curved concave surface of the skin plate 10. It is constantly in contact with 10A.

Therefore, water does not fly upward along the skin plate 10 during opening and closing of the gate.

A lower watertight rubber member 28 is attached to a mounting plate 27 protruding from the lower end of the gate/skin plate 10 with bolts or the like (not shown). It comes into contact with the upper surface of the lower side plate 7D of 7 to stop water.

As shown in FIG. 7, the end of the lower plate 7D of the sand discharge end pipe 7 is made to protrude beyond the tip arcuate surface 7E of the left and right side plates 7A, 7B, and is protected by the lower watertight rubber 26. It is designed to completely stop water.

Furthermore, the watertight rubbers 21, 23, 24, 26 can be attached mainly to the sand discharge end pipe 7 side without depending on this embodiment.

Furthermore, the sand discharge pipe 3 according to this invention is provided in front of the dam 1, as shown by the two-dot chain line in FIG. 2, and the suction port is opened in the direction of the center line of the sand discharge pipe 30. Good too.

Further, the trunnion pin receiver 14 of the tenter gate 9 can be attached to a pedestal buried in the dam 1.

In this invention, the tenter gate 9 can be opened and closed by operating the hydraulic cylinder device 17 when it is necessary to discharge the discharged sand.

In the sand discharge equipment according to this invention, since the sand discharge end pipe 7 has a rectangular cross section, the end surface where the tenter-type gate is attached can be easily machined and the precision can be increased, and the tenter gate 9 can be easily processed. Since water is stopped by the curved concave surface 10A, the L-runion pin 13 is connected to the sand discharge end pipe 7.
Therefore, it can be manufactured and installed in a factory with high accuracy, and not only can water be completely removed, but also
There is no need for gate grooves, and there is no need to anchor the trunnion pin holder, which greatly reduces civil engineering work and reduces gate maintenance and maintenance.
We have great expectations for its effectiveness, as it is easy to inspect and can be easily repaired and replaced, making a significant contribution to shortening construction times and lowering costs.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; Fig. 1 is a longitudinal cross-sectional side view of the overall configuration, Fig. 2 is a plan view of Fig. 1, and Fig. 3 is a side view showing the sand discharge end pipe and gate. , Figure 4 is the third
Fig. 5 is a partial sectional view showing the side watertight structure of the gate, Fig. 6 is a longitudinal sectional side view showing the upper watertight structure of the gate, and Fig. 7 is a longitudinal sectional side view showing the lower watertight structure of the gate. It is. 1...Weir, 2...Dam reservoir, 3.
... Sand discharge pipe, 4 ... Suction port, 6, 8 ...
... Flange, 7 ... Sand discharge end pipe, 9
...Tentergate, 10...Skin plate, 10A...Curved concave surface, 12...
...Arm, 13...Trunion pin, 14.
...Trunion pin holder.

Claims (1)

[Scope of utility model registration request] The cross-sectional shape of the discharge end pipe of the sand discharge pipe having a suction port near the water bottom is square, and the radial gate is connected to the square discharge end pipe by a trunnion pin supported on the upstream side of the discharge end pipe or on a dam, etc. A sand discharge facility characterized by being configured to open and close by.