JP4256571B2 - Weir member structure of movable weir - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dam member structure of a movable dam used for flow rate adjustment in a sewage treatment plant or the like.
[0002]
[Prior art]
In a sewage treatment plant or the like, it is necessary to flow an appropriate amount of sewage according to the treatment capacity of each treatment system. Therefore, a movable weir for adjusting the flow rate is often provided along the water channel. As shown in FIG. 6 (a), the general configuration of a general movable weir 31 includes a door stop 32 fixed to a foundation constituting a water channel, and a door body 33 provided so as to be movable up and down with respect to the door stop 32. Become. A large opening 32a is formed on the door stop 32 side, and an overflow hole 33a is formed on the door body 33 side. As can be seen from FIG. 6B, depending on the vertical position of the door body 33, that is, the water level. W. The overflow rate is determined by the distance L between L and the lower end portion 33b of the overflow hole 33a.
[0003]
Moreover, normally, as shown in FIG.6 (c), in the door stop 32, the water stop board 34 is around the edge of the opening part 32a, and in the door body 33, the water stop function is around the edge of the overflow hole 33a. A dam member (dam plate 35) serving as both is fixed, and the water stop plate 34 and the dam plate 35 are in close contact with each other, so that the water tightness is maintained. In general, the tip of the dam plate 35 on the side facing the overflow hole 33a is laid out so as to face the upstream side of the water channel, and an inclined surface 36 that is inclined with respect to the water flow direction is formed. The inclined surface 36 is formed for the purpose of smoothly overflowing water downstream without stirring water at the edge of the overflow hole 33a, and is widely used as a means for increasing the accuracy of overflow. Is.
[0004]
[Problems to be solved by the invention]
By the way, depending on the form of the treatment system of the sewage treatment plant, the water flow direction in the water channel is sometimes reversed, and in this case, the inclined surface 36 of the dam plate 35 is also reversed in accordance with the change of the water flow direction. It must be laid out. However, when changing the layout of the inclined surface 36, conventionally, there has been a problem that a large disassembly work is required in which the door body 33 is once removed from the door stop 32 and the dam plate 35 is removed from the door body 33.
[0005]
The present invention was created to solve such a problem, and provides a dam member structure for a movable dam that allows the layout of the inclined surface of the dam member to be changed by a simple operation when changing the direction of water flow. The purpose is to do.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the present invention includes a overflow hole and a weir member that faces the overflow hole and has an inclined surface that is inclined with respect to the water flow direction along the edge of the overflow hole. In the movable dam provided with the body, the dam member is divided into the inner tip portion having the inclined surface and the main body portion fixed to the door body so that the inclined surface can face either side of the movable dam. The inner tip portion is provided so as to be detachable from the main body portion.
[0007]
In the dam member, a groove is formed along the edge of the overflow hole on one side of the inner tip portion or the main body portion, and a protrusion that fits in the groove is formed on the other side. did.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. 1 is a front view of the movable weir, FIG. 2 is a longitudinal side view of the movable weir, FIG. 3 is a cross-sectional view taken along the line AA in FIG. 1, and FIGS. 5 (a) is a front view of the dam member when the inner tip is attached to the main body, FIG. 5 (b) is a front view of the dam member when the inner tip is detached from the main body, and FIG. ), (D) is a front view showing an example in which weir members are formed separately on a right part, a left part, and a lower part.
[0009]
1 and 2, the movable weir 1 includes a door stop 2 fixed to the foundation G and a rectangular overflow hole 3a for allowing water to flow over at an upper portion of the switch (see FIG. 1). And a door body 3 that can be moved up and down via a rod 4. The door stop 2 has a rectangular base frame 2b in front view as a main frame, and a rectangular opening 2a through which water passes is formed at the top of the base frame 2b. As shown also, the vertical frame part 2c is protrudingly provided so that a water flow direction may be followed. The door stop 2 is fastened and fixed to the foundation G by anchor bolts or the like at both side ends of the base frame portion 2b.
[0010]
As shown in FIG. 3, a plurality of guide plates 5 are fixed on the front surface of the vertical frame portion 2c so that the plate surface thereof is parallel to the plate surface of the base frame portion 2a (this embodiment is shown in FIG. 1). As shown, three doors 3 are provided for each of the vertical frame portions 2c, and the door body 3 is surrounded by the guide plate 5, the base frame portion 2b, and the vertical frame portion 2c at both side ends. It is inserted into the door stop 2 so as to be positioned in the space portion. A guide roller 6 is rotatably attached to each guide plate 5 so as to face the space. Reference numeral 5a denotes a bracket fixed to the guide plate 5, and reference numeral 5b denotes a shaft member fixed to the bracket 5a and rotatably supporting the guide roller 6. Further, on the front surface of the base frame portion 2b of the door stop 2, a water stop plate 7 is fixed to the edge portion of the opening 2a, and on the door body 3 side, right and left portions corresponding to the water stop plate 7 and A dam member 8 is fixed to the lower rear surface. Both the water stop plate 7 and the weir member 8 are made of stainless steel or the like. With the above configuration, the door body 3 moves up and down with respect to the door stop 2 while being slidably supported by the guide roller 6 while maintaining the watertightness with the portion of the weir member 8 being in close contact with the water blocking plate 7.
[0011]
As shown in FIG. 5A, the dam member 8 is a plate member in which a rectangular cutout smaller than the overflow hole 3 a of the door body 3 is formed on the upper side portion. As shown in FIG. 3, an inclined surface 9 that is inclined with respect to the water flow direction is formed at the inner edge of the notch. The weir member 8 has an inclined surface 9 facing the overflow hole 3a. It is fixed to the door body 3 along the left and right portions and the lower edge of the hole 3a. As described above, the inclined surface 9 is for increasing the accuracy of water overflow, and the inclination angle θ is about 45 °.
[0012]
Now, in the present invention, the weir member 8 is attached to the inner tip portion 10 having the inclined surface 9 and the door body 3 so that the inclined surface 9 can be opposed to either the front or back (front and back) sides of the movable weir 1. The main feature is that the main body part 11 is provided separately from the main body part 11 and the inner tip part 10 is detachable from the main body part 11.
[0013]
As this configuration, in this embodiment, a groove 12 having a rectangular cross section is formed on one side of the inner tip portion 10 or the main body portion 11 along the edge of the overflow hole 3a, and the groove 12 is fitted on the other side. The projecting portion 13 is formed. 4A shows an embodiment in which a groove 12 is formed on the main body 11 side, and a protrusion 13 is formed on the inner tip 10 side. FIG. 4B shows a groove 12 on the inner tip 10 side, and the main body 11. The aspect which formed the protrusion 13 in the side is shown. The groove 12 is formed at the center of the plate thickness of the inner tip portion 10 and the main body portion 11, respectively. As a result, the attachment / detachment of the inner tip portion 10 with respect to the main body portion 11 is a simple operation of simply inserting and removing from above, as shown in FIG. 5B, and the inner tip portion 10 is inserted into the main body portion 11 with the front and back sides reversed. As a result, as indicated by phantom lines, the inclined surface 9 can face either side of the movable weir 1.
[0014]
In addition, as shown in FIGS. 5C and 5D, the dam member 8 may be formed separately in the right part, the left part, and the lower part. FIG. 5C shows a case where the inner tip portion 10 and the main body portion 11 are separately formed, and FIG. 5D shows a case where only the inner tip portion 10 is formed separately. This configuration of separating the dam members 8 is effective when the shape of the movable dam is large and the weight of the dam members 8 is large, reducing the labor burden on the operator at the time of replacement.
[0015]
FIG. 4C is a modification of the present invention and shows a configuration in which the inner tip 10 is fastened to the main body 11 by screwing. Also with this configuration, the inclined surface 9 can be opposed to either the front or back side of the movable weir 1 by turning the inner tip portion 10 upside down and screwing it to the main body portion 11.
[0016]
Thus, according to the present invention, when the direction of the inclined surface of the weir member is reversed in accordance with the change of the water flow direction in the water channel, the door body is removed from the door stop as in the conventional case, and the weir member is further connected to the door. There is no need for a large-scale disassembly work such as removal from the body, and an extremely simple work is sufficient.
[0017]
Further, if a groove is formed on one side of the inner tip portion or the main body portion along the edge of the overflow hole, and a protrusion that fits into the groove is formed on the other side, for example, FIG. Compared to the modification shown in 4 (c), the number of contact surfaces between the inner tip 10 and the main body 11 can be increased, so that the watertightness is also excellent.
[0018]
The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the contents described in the drawings, and the shape and mounting position of each component can be appropriately changed without departing from the spirit of the present invention. It is.
[0019]
【The invention's effect】
The dam member structure of the movable dam according to the present invention has the following effects.
(1) The dam member is divided into an inner tip portion having an inclined surface and a main body portion fixed to the door body so that the inclined surface can face either side of the movable dam. If the inner tip is configured to be detachable from the main body, the direction of the inclined surface of the weir member can be reversed by a very simple operation when changing the direction of water flow in the water channel.
(2) Moreover, if it is set as the structure which forms a groove | channel so that the edge part of an overflow hole may be formed in any one side of an inner front-end | tip part or a main-body part, and the other side will fit in a groove | channel, The direction of the inclined surface of the weir member can be reversed by a simpler operation, and the number of contact surfaces between the inner tip portion and the main body portion is increased, so that the water tightness is improved.
[Brief description of the drawings]
FIG. 1 is a front view of a movable weir.
FIG. 2 is a vertical side view of a movable weir.
FIG. 3 is a cross-sectional view taken along the line AA in FIG.
4A to 4C are cross-sectional views of main parts of a dam member.
5A is a front view of a dam member when the inner tip is attached to the main body, FIG. 5B is a front view of the dam member when the inner tip is detached from the main body, and FIG. (D) is a front view which shows the example which formed the dam member separately in the right part, the left part, and the lower part, respectively.
6A is an exploded perspective view showing a schematic structure of a general movable weir, FIG. 6B is a use state diagram of the movable weir, and FIG. 6C is a cross-sectional view of the movable weir.
[Explanation of symbols]
G foundation 1 movable weir 2 door contact 2a opening 3 door 3a overflow hole 5 guide plate 8 weir member 9 inclined surface 10 inner tip 11 main body 12 groove 13 protrusion

Claims (2)

In the movable weir provided with a door body having an overflow hole and a weir member facing the overflow hole and forming an inclined surface that is inclined with respect to the water flow direction along the edge of the overflow hole,
The dam member is divided into an inner tip portion having an inclined surface and a main body portion fixed to the door body so that the inclined surface can face either side of the movable dam. A dam member structure for a movable dam, wherein the portion is configured to be detachable from the main body. In the dam member, a groove is formed on one side of the inner tip portion or the main body portion along the edge of the overflow hole, and a protrusion that fits in the groove is formed on the other side. The dam member structure of the movable dam according to claim 1.

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