JPH0931948A - Movable dam - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and accurately read the overflow height from the operating floor side. SOLUTION: In a movable dam 1 in which a door body 6 is arranged opposite to the discharging opening or the waterway to freely open or close it, and the overflow height at the gate top 10 can be set at an optional level by the vertical movement of the door body 6, a graduated bar 11 reaching the operating floor 12 above the water way at the upper end is fixed to the door body 6 and a float 13 moving along the graduated bar 11 is provided to freely move up and down by using the position corresponding to the gate top 10 as the lowermost limit. The divisions are scored on the graduation bar 11 at the position at least corresponding to the operating floor 12. And a needle 15 pointing the divisions is supported by the float 13. The position that the needle 15 points in the state the float 13 is positioned at the lowermost limit, is set as the basic position indirectly indicating the gate top on the graduation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable weir provided at an intake or an outlet of a pump station, a sewage treatment plant, a water purification plant, an industrial / agricultural canal, or the like.

[0002]

2. Description of the Related Art Conventionally, in the case of overflowing running water with a certain amount of running water, the overflow height is measured by a scale provided on a weir plate of a movable weir, and based on this measurement value, the necessary The running water volume was calculated.

A conventional movable weir provided with a weir plate having a scale for measuring the overflow height is, for example, as shown in FIG. As shown in FIG. 4, in the movable weir 21, the guide plates 23 are arranged on both sides of the door stop 22, and the inner peripheral surface of the door stop 22 and the guide plate 23 form a guide groove 24.
A door body 25 that moves up and down is arranged. Further, the movable weir 21 is provided with a vertical spindle 26 at the center of the upper part, and is connected to the upper part of the spindle 26 to be provided with an operating device 27. The operating device 27 is driven via the spindle 26 to move the door body 25 up and down. Let Further, an opening 28 is provided at the center of the door body 25, and weir plates 29 with scales are provided on both sides of the opening 28. And this opening 2
The running water overflows from 8, and the overflow height is read by the dam plate 29 provided on both sides of the opening 28 and having a scale.

[0004]

However, as described above, in the conventional movable weir 21, since the weir plate 29 provided in the opening 28 of the door 25 is provided with the scale for measuring the overflow height. However, the overflow height could not be easily and accurately read from the operation floor 30 side.

The present invention solves the above problems, and an object of the present invention is to provide a movable weir from which the overflow height can be easily and accurately read from the operation floor side.

[0006]

In order to solve the above problems, in the movable weir of the present invention, the door body is arranged so as to be able to move up and down so as to face the water discharge port of the water channel, and as the door body moves up and down, the weir is moved over. In a movable weir in which the flow height is set to an arbitrary height, a scale bar whose upper end reaches the operation floor above the waterway is fixed to the door, and the float moving along the scale bar is set at the position corresponding to the weir top. As a lower limit, it is provided to be able to move up and down, and at least the part of the scale bar that corresponds to the operating floor is marked with
A pointer that indicates this scale is supported by a float,
It is characterized in that the position where the pointer is supported in the state where the float is located at the lowermost limit is set as a reference position on the scale that artificially shows the weir top.

As described above, the movable weir of the present invention is provided with the scale bar having the scale and the float indicating the scale of the scale bar at the portion corresponding to the operation floor. The float moves up and down along the scale bar as it rises and falls.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS. 1 to 3, in the movable weir 1, guide plates 4 are arranged on both sides of a door stop 3 surrounding a water outlet of a water channel 2, and a guide groove 5 is formed by an inner peripheral surface of the door stop 3 and the guide plate 4. And a door body 6 that moves up and down along the guide groove 5 is arranged.

The movable weir 1 is provided with a vertical spindle 7 at the center of the upper part, and is connected to the upper part of the spindle 7 to provide an operating device 8
Is provided, and the door body 6 is moved up and down by driving the operating device 8 via the spindle 7. At the center of the door body 6 of the movable weir 1, an opening 9 through which running water overflows is provided. In addition, the lowermost edge of the opening 9 through which the running water overflows is set at the weir 10
Called.

A scale bar 11 that reaches the operation floor 12 from below the water surface is fixed to the wall surface of the door body 6 on the water channel 2 side in the vertical direction. An arbitrary portion is set as a reference point A at the upper end of the scale bar 11 reaching the operation floor 12, and the scale is marked upward from the reference point A. Further, a float 13 that moves in the up-down direction as the water level in the water channel 2 rises is arranged outside the scale bar 11.

The float 13 can be raised and lowered with the position corresponding to the weir top 10 of the door body 6 as the lowest limit. A protrusion 14 is provided at the lower end of the scale bar 11 and holds the float 13 at the lowest limit. When the float 13 is at the lowermost limit, the pointer 1 provided at the tip of the float 13
5 is formed so as to coincide with the reference point A of the scale bar 11. Therefore, when the water level in the water channel 2 increases and the float 13 moves upward, the distance from the pointer 15 of the float 13 to the reference point A becomes the overflow height. The operation floor 12
A cover 16 that guides the scale bar 11 and the float 13 that reach the operation floor 12 side is provided on the.

The operation of the above structure will be described below.
As shown in FIG. 3, the pointer 15 of the float 13 and the scale bar 1
When the water level of the water channel 2 increases from the state where the reference point A of 1 coincides, the float 13 moves the float 13 to the scale bar 1 as the water level rises.
The pointer 15 points to a portion of the scale bar 11 by moving upward along the line 1. In this state, the distance between the reference point A and the pointer 15 becomes the overflow height at the weir top 10.
Therefore, the overflow height can be read on the operation floor 12.

[0013]

As described above, the movable weir according to the present invention is
A scale bar with a scale on the part corresponding to the operation floor,
Since the float supporting the pointer for instructing the scale of the scale bar is provided, it is possible to recognize the overflow height by reading the scale of the scale bar indicated by the pointer on the operation floor side.

[Brief description of drawings]

FIG. 1 is a front view of a movable weir according to an embodiment of the present invention.

FIG. 2 is a side view showing a state where the float of the movable weir of the embodiment is located at the lowermost limit.

FIG. 3 is a side view of the movable weir according to the same embodiment in a state where the water level rises from a state in which the float is located at the lowest limit.

FIG. 4 is a front view of a conventional movable weir.

[Explanation of symbols]

 1 movable weir 2 waterway 6 door body 10 weir top 11 scale bar 12 operation floor 13 float 15 pointer

Claims (1)

[Claims] 1. A movable weir in which a door body is arranged to be able to move up and down so as to face a water discharge port of a water channel, and the overflow height at the weir top is set to an arbitrary height by raising and lowering the door body. A scale bar that reaches the operation floor above the waterway is fixed, and a float that moves along the scale bar is provided so that it can be raised and lowered with the position corresponding to the weir top as the lowest limit. In addition to marking the scale, a pointer that indicates this scale is provided by being supported by a float, and the position that the pointer indicates when the float is at the lowest limit is set as the reference position that pseudo-displays the weir on the scale. A movable weir characterized by.