JP2008038565A - Horizontally movable movable weir - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a horizontally sliding movable weir which can reduce the space for housing a door body and can secure sufficient strength of the door body. <P>SOLUTION: The horizontally sliding movable weir 1 comprises the door body 10 with horizontal flexibility which can close an opening part by overlapping an outer peripheral edge of the opening part, two vertically extending shaft members 20, 30 arranged on both lateral sides of the opening part, respectively, and two ring-like chains 40, 40 fitted to the shaft members 20, 30 in a bridging manner. The upper end edge and the lower end edge of the door body 10 are connected to the chains 40, 40, respectively. When the chains 40, 40 are rotated and the door body 10 is moved horizontally, the door body 10 is folded back around the shaft members 20 along the chain line of the chains 40, 40. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a laterally movable movable weir attached to an overflow section formed in a distribution tank or the like of a water purification plant or a sewage treatment plant.

  As a movable weir attached to a plurality of overflow sections formed in a distribution tank of a water purification plant or a sewage treatment plant, the door body is moved in the vertical direction (height direction) with respect to the opening of the overflow section, Some change the overflow rate and the distribution ratio of the overflow rate by changing the overflow depth.

Here, overflow depth h is obtained by JIS standard flow rate formula Q = Cbh ^3/2 (m ³ / sec) where Q is the overflow rate, C is the flow coefficient of JIS standard, and b is the width of the door body. Can do. In this flow rate formula, since the door width b is constant, it becomes a function with the overflow rate Q and the overflow depth h as variables, and since it is not a linear function, it takes time to calculate the overflow rate, and the calculation result has a fraction. Because it comes out, the accuracy of the flow rate setting is lacking. In addition, since the distribution ratio of the overflow rate changes due to the fluctuation of the water level, it is necessary to reset the opening width of each opening with the fluctuation of the water level.

  On the other hand, in the configuration in which the door body is moved in the lateral direction (width direction) with respect to the opening portion of the overflow portion, the overflow amount is adjusted by adjusting the opening width of the opening portion. It is easy to calculate the overflow rate. Moreover, since the distribution ratio of the overflow rate does not change even if the water level fluctuates, it is not necessary to adjust the opening degree of each opening part with the water level fluctuation.

  As described above, as the movable weir provided in the overflow section, it is desirable to move the door body in the lateral direction. However, in the configuration in which the door body is moved in the lateral direction, the door body is housed on the side of the opening. It is necessary to secure a space, and installation is difficult when a plurality of overflow sections are adjacent to each other at a narrow interval.

  Therefore, a rotary drum that can rotate around the vertical axis is provided on the side of the door body, and the door body is moved in the lateral direction by winding the door body in a spiral shape to adjust the opening width of the opening. There is a horizontal pulling movable weir (horizontal pulling type roll gate) configured to perform (see, for example, Patent Document 1).

Japanese Patent No. 3475347 (paragraph 0009, FIG. 3)

  However, in the configuration in which the door body is wound around the rotating drum, in order to reduce the space for storing the door body, the door body is spirally wound around the small-diameter rotating drum, and the lateral flexibility of the door body is enhanced. In addition, since it is necessary to reduce the thickness of the door body, there is a problem that the strength of the door body is lowered, and it is difficult to apply to a distribution tank of a water purification plant or a sewage treatment plant.

  Then, in this invention, while solving the above-mentioned problem, while being able to make the space which accommodates a door body small, while providing the horizontal pulling movable weir which can ensure the intensity | strength of a door body enough, it is a subject. To do.

  In order to solve the above-mentioned problem, the present invention is a horizontally movable movable weir, which overlaps with the outer peripheral edge of the opening to close the opening, and has a flexible door in the lateral direction, and an opening. Two shaft members respectively disposed on both sides in the horizontal direction and extending in the vertical direction, and two annular chains spanned between the shaft members, and an upper end edge of the door body and The lower edge is connected to each chain, and when each chain is rotated to move the door body in the lateral direction, the door body moves along the chain line of each chain, It is configured to be folded around an axis.

  According to this configuration, when the door body is moved in the lateral direction, the door body is folded in an arc around the axis of the shaft member along the chain line of the annular chain. Can be reduced. Further, since it is not necessary to wind the door body around the drum or the like, the strength of the door body can be sufficiently increased.

  In addition, after the door body is folded back along the chain line of the chain, when the chain is further rotated in the same direction, each surface of the door body is in a state opposite to the state where the opening is closed. Will be disposed. Thereby, both surfaces of a door body can be confirmed from one side, and a maintenance inspection of a door body can be performed easily.

  In the horizontal pulling movable weir described above, in the chain, the outer peripheral surface of the roller interposed between the two upper and lower link plates protrudes sideways from each link plate, and from the inner peripheral side of the chain line of the chain. The roller can be configured to include pressing means for pressing the outer peripheral surface of the roller toward the outer peripheral edge of the opening.

  According to this configuration, by pressing each chain toward the outer peripheral edge of the opening by the pressing means, the upper edge and the lower edge of the door connected to each chain are the upper edge and the lower edge of the door. Since the edge is pressed against the outer peripheral edge of the opening, the water stoppage between the door body and the outer peripheral edge of the opening can be increased.

  The pressing means presses the outer peripheral surface of the roller protruding from the link plate, and when the chain is rotated, the roller rolls relative to the pressing means. Accordingly, the chain can be smoothly moved while pressing the chain by the pressing means, and therefore, when the door body is moved, it is not necessary to stop the pressing by the pressing means, and the work for moving the door body is performed. It can be simplified.

  In the horizontal pulling movable weir described above, the opening is formed in a door stop member fixed to the overflow portion of the housing, and each shaft member is attached to a main body side frame member that is detachable from the door stop member. Can be configured.

  According to this configuration, since the shaft member, the chain, and the door body can be integrally removed by removing the main body side frame member from the door stop member, each component can be easily replaced.

  According to the laterally movable movable weir of the present invention, when the door body is moved in the lateral direction, the door body is folded in an arc shape along the chain line of the annular chain, so that the space for storing the door body is reduced. can do. This makes it possible to apply a horizontally movable movable weir that makes it easy to calculate the overflow rate and does not change the distribution ratio of the overflow rate even when the water level fluctuates, when multiple overflow sections are adjacent at narrow intervals. it can. Further, since it is not necessary to wind the door body around the drum or the like, the strength of the door body can be sufficiently increased.

Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
In the present embodiment, a case where the horizontally movable movable weir of the present invention is installed in an overflow section formed on the side wall of a distribution tank of a water purification plant or a sewage treatment plant will be described as an example.

FIG. 1 is an overall perspective view showing the horizontally movable movable weir according to the present embodiment. FIG. 2 is a schematic front view showing the horizontally movable movable weir according to the present embodiment. FIG. 3 is a cross-sectional view taken along the line AA of FIG. 1 showing the horizontally movable movable weir according to the present embodiment. FIG. 4 is a cross-sectional view taken along the line BB of FIG. 1 showing the horizontally movable movable weir according to the present embodiment. FIG. 5 is a view showing a door body and a chain in the laterally movable movable weir according to the present embodiment, where (a) is an enlarged cross-sectional view of the door body, (b) is an enlarged perspective view of the chain, and (c) is a door. It is the expanded partial sectional view which showed the connection part of a body and a chain. FIG. 6 is a cross-sectional view of the horizontally movable movable weir according to the present embodiment in a state in which the door body is housed.
In the following description, the inside / outside direction and the top / bottom / left / right directions correspond to the directions shown in the drawings.

[Overall configuration of horizontally movable movable weir]
As shown in FIG. 1, the horizontally movable movable weir 1 is disposed on each of the left and right sides in the lateral direction (width direction) of the door body 10 having flexibility in the lateral direction and the opening 101 (see FIG. 3). The two shaft members 20 and 30 extended in the vertical direction (height direction) along the side of the opening 101, and the two chains 40 and 40 spanned between the shaft members 20 and 30, The two pressing devices 50 (the “pressing means” in the claims) that press the respective chains 40 and 40 are provided.
Moreover, each shaft member 20,30 and the pressing device 50 are attached to the main body side frame member 60, and this main body side frame member 60 is the door stop fixed to the overflow part of a distribution tank (not shown). It can be attached to and detached from the member 100.
In FIG. 2, the entire pressing devices 50, 50 are omitted and a part of each chain 40, 40 is omitted for easy understanding of the connection state between the door 10 and each chain 40, 40. .

(Structure of door-to-door members)
As shown in FIGS. 3 and 4, the door-stop member 100 is a four-frame member fixed to the overflow portion of a distribution tank (not shown), and a rectangular opening 101 passes through the center portion. The overflow is performed through the opening 101. A water stop plate 104, which is a flat plate made of stainless steel, is attached to the outer peripheral edge of the inner surface of the opening 101 over the entire circumference.
In the water stop plate 104, the right vertical member protrudes into the opening 101, and the left edge of the right vertical member is used to reduce resistance to the flow of water over the opening 101. A tapered surface is formed. In this embodiment, the tapered surface is formed at the inner corner of the vertical member on the right side of the water blocking plate 104, but this tapered surface is formed on the downstream side in the overflow direction, It is changed appropriately according to the overflow direction.

  Flange portions 102 and 103 fixed to the outer peripheral edge of the overflow portion are formed on the upper edge and the lower edge of the door stop member 100, and the door stop member 100 is attached to the flange portions 102 and 103, respectively. A plurality of attachment holes (not shown) for fixing to the outer peripheral edge of the overflow section and a plurality of connection holes (not shown) for attaching the main body side frame member 60 pass therethrough. And the door stop member 100 is being fixed to the overflow part by fixing the volt | bolt penetrated to each attachment hole to the outer periphery of an overflow part.

(Configuration of body side frame member)
As shown in FIGS. 2 to 4, the main body side frame member 60 is disposed at a predetermined interval in the lateral direction from the upper frame member 61 and the lower frame member 62 that are disposed at a predetermined interval in the vertical direction. This is a four-round frame member constituted by the two vertical frame members 63, 63.
The upper frame member 61 and the lower frame member 62 have a plurality of connecting holes 61a and 62a that communicate with connecting holes (not shown) formed in the flange portions 102 and 103 of the door stop member 100. The main body side frame member 60 is fixed to the door stop member 100 by fixing the bolts inserted through the holes 61 a and 62 a to the connection holes of the door stop member 100. Therefore, the main body side frame member 60 can be easily detached from the door stop member 100 by detaching the bolts from the connecting holes 61a and 62a.

(Structure of door body)
As shown in FIGS. 2 and 3, the door body 10 is opened in a state in which the outer peripheral edge of the outer surface is superposed on the water stop plate 104 attached to the outer peripheral edge of the opening 101 to ensure water-stopping. It is formed in a rectangular plate shape that can close the portion 101.
As shown in FIG. 5A, the door body 10 includes a plurality of rectangular pipes 12 extending in the vertical direction arranged in parallel on the inner surface of a rectangular rubber plate 11 at predetermined intervals. The rubber sheet 13 is put on the inner surface and the square pipe 12, and the rubber sheet 13 and the rubber plate 11 are vulcanized and bonded to form a lining.

  Thus, the door body 10 is sufficiently secured in the vertical direction by the plurality of square pipes 12. Further, since the square pipes 12 are arranged in parallel at a narrow interval, the lateral strength is sufficiently ensured. Furthermore, since the square pipes 12 are arranged side by side at a predetermined interval, the door body 10 has flexibility in the horizontal direction and can be folded back in an arc shape in the horizontal direction (FIG. 6). reference).

  As shown in FIG. 3, a stainless steel side end member 14 is attached to the right edge of the door body 10. A taper surface is formed on the right edge of the side end member 14 in order to reduce resistance to the flow of water that flows over the opening 101 when the door 10 is moved leftward to open the opening 101. Is formed. In the present embodiment, the tapered surface is formed at the inner corner at the right end of the side end member 14, but this tapered surface is formed on the downstream side in the overflow direction. It is changed appropriately according to the overflow direction.

(Configuration of shaft member)
As shown in FIGS. 2 and 3, the shaft members 20 and 30 are respectively disposed on the left and right sides in the lateral direction of the door body 10, and are circularly extended along the side portion of the door body 10. It is a columnar member.
The upper and lower portions of the shaft members 20 and 30 are inserted through through holes formed in the upper frame member 61 and the lower frame member 62 of the main body side frame member 60, and the shaft members 20 and 30 rotate around the axis. It is possible.

  The upper end portions of the shaft members 20 and 30 protrude upward from the upper surface of the upper frame member 61. And the output part of a drive motor (not shown) is connected with the upper end part of the left side shaft member 20, and it is comprised so that it may rotate around an axis | shaft with the drive force of a drive motor.

In addition, two sprockets 21 and 22 having tooth portions formed around the shaft are attached to the left shaft member 20 at a predetermined interval in the vertical direction. Similarly, two sprockets 31 and 32 are attached to the right shaft member 30 at a predetermined interval in the vertical direction.
The upper sprockets 21 and 31 are arranged at a height slightly above the upper end edge of the door body 10, and the lower sprockets 22 and 32 are slightly lower than the lower end edge of the door body 10. It is arranged at the height which becomes.

(Chain structure)
As shown in FIGS. 2 to 4, annular chains 40, 40 hang between the upper sprockets 21, 31 of the shaft members 20, 30 and between the lower sprockets 22, 32, respectively. Each of the chains 40, 40 is configured to rotate by rotating the left shaft member 20 by a drive motor (not shown).

  As shown in FIG. 5 (b), the chain 40 is formed by connecting a plurality of members having two rollers 42, 42 between two upper and lower link plates 41, 41 to form an annular body. In the chain 40 of this embodiment, the outer peripheral surface of the roller 42 protrudes from each link plate 41, 41.

  Further, as shown in FIG. 3, two stoppers 64, 64 are attached to the lower surface of the upper frame member 61 and the upper surface of the lower frame member 62 of the main body side frame member 60 at a predetermined interval in the lateral direction. ing. Further, in the chain line of each chain 40, 40, a protruding member 43 disposed between the stoppers 64, 64 is attached to the inner straight portion. Then, when the chains 40 and 40 are rotated, the protruding members 43 come into contact with the left and right stoppers 64, whereby the amount of rotation of the chains 40 and 40 is restricted.

Further, on the upper surface of the upper frame member 61 and the lower surface of the lower frame member 62 on the main body side frame member 60, a chain tension adjusting device for adjusting the tension of the chains 40, 40 is provided in the vicinity of the left shaft member 20. 70 and 70 are attached.
The chain tension adjusting device 70 tightens a bolt 72 attached to a fixing portion 71 fixed to the upper surface of the upper frame member 61 and the lower surface of the lower frame member 62, thereby causing the left shaft member 20 to move to the right shaft. The chain 40 is pushed out in the direction away from the member 30 (left side in FIG. 2) to adjust the tension of the chain 40.

(Structure of connecting part of door body and chain)
As shown in FIG. 2, the upper edge and the lower edge of the door body 10 are connected to the chains 40, 40, respectively, and the door body 10 moves laterally in conjunction with the rotation of the chains 40, 40. Is configured to do.

Here, the connecting portion between the door body 10 and the chain 40 will be described by taking the connecting portion between the lower end edge of the door body 10 and the lower chain 40 as an example.
As shown in FIG. 5C, in the chain 40, the roller pin 44 at a position corresponding to the lower end edge of the door body 10 extends upward, and a screw groove is formed at the upper end portion thereof. Further, a rectangular parallelepiped spacer 45 is externally fitted to the protruding portion of the roller pin 44, and a nut 46 is screwed to the upper end portion of the roller pin 44, so that the spacer 45 is fixed to the roller pin 44. And the lower end edge of the door body 10 is connected with the chain 40 by making the spacer 45 fit inside the square pipe 12 of the door body 10. In addition, a washer 47 is provided between the spacer 45 and the upper surface of the chain 40 to align the height of the door body 10 in the lateral direction.
The connecting portion between the upper end edge of the door body 10 and the upper chain 40 is provided between the lower end edge of the door body 10 and the lower chain 40 except that the height adjusting washer 47 is not provided. Since it is the same structure as a connection part, the description is abbreviate | omitted.

  Further, in the lower chain 40, traveling that travels on the upper surface of the rail 65 attached to the upper surface of the lower frame member 62 of the main body side frame member 60 on the lower surface of the portion to which the lower end edge of the door body 10 is coupled. A plurality of rollers 48 are provided, and the door 10 is supported by each traveling roller 48.

(Configuration of pressing device)
As shown in FIGS. 3 and 4, the pressing device 50 is attached to the lower surface of the upper frame member 61 and the upper surface of the lower frame member 62 of the main body side frame member 60, and the inner periphery of the chain line of the chain 40. From the side, the outer peripheral surface of the roller 42 of each chain 40, 40 is configured to be pressed toward the outer peripheral edge of the opening 101.

The lower pressing device 50 includes a fixing member 51 fixed to the upper surface of the lower frame member 62 in the ring of the chain line of the chain 40, and an outer peripheral surface of each roller 42 from the inner peripheral side of the chain line of the chain 40. And a plurality of spring members 53 interposed between the fixing members 51 and the respective pressure plates 52, and the biasing force of the spring members 53. The pressing plate 52 is configured to press the outer peripheral surface of the roller 42.
The upper pressing device 50 has the same configuration as that of the lower pressing device 50, and thus the description thereof is omitted.

[Operation of horizontally movable weir]
Next, the operation of the horizontally movable movable weir 1 when adjusting the overflow rate of the overflow section will be described.
First, as shown in FIGS. 2 to 4, the outer peripheral edge of the outer surface of the door body 10 overlaps with a water stop plate 104 attached to the outer peripheral edge of the inner surface of the opening 101 to close the opening 101. In this state, the left shaft member 20 is rotated about its axis by a drive motor (not shown), and the chains 40 and 40 are rotated counterclockwise in FIG. It moves in the horizontal direction in conjunction with the rotation of 40,40. In this way, the opening width of the opening 101 can be adjusted.

  In the laterally movable movable weir 1 of the present embodiment, the door body 10 is moved in the lateral direction with respect to the opening 101 of the overflow section, and the opening flow rate is adjusted by adjusting the opening width of the opening 101. Therefore, it is easy to calculate the overflow rate. In addition, when applied to a plurality of overflow sections formed in the distribution tank, the distribution ratio of the overflow rate does not change even if the water level changes, so the opening width of the opening 101 is adjusted according to the water level fluctuation. There is no need.

  Then, as shown in FIG. 6, when the chains 40, 40 are rotated to a position where the protruding members 43 of the chains 40, 40 abut against the right stopper 64, the door body 10 is attached to the chains 40, 40. By folding back around the axis of the left shaft member 20 along the chain line, the door body 10 is housed in the main body side frame member 60 on the left side of the opening 101.

[Effects of horizontally movable movable weir]
The horizontally movable movable weir 1 configured as described above has the following operational effects.
According to the laterally movable movable weir 1 of the present embodiment, as shown in FIG. 6, when the door body 10 is moved in the lateral direction, the door body 10 is along the chain line of the annular chains 40, 40. Since the left shaft member 20 is folded back in an arc shape around the axis, the space for storing the door body 10 can be reduced. Thereby, the horizontal movable movable weir 1 in which the calculation of the overflow rate is easy and the distribution ratio of the overflow rate does not change even when the water level fluctuates is applied even when a plurality of overflow portions are adjacent at a narrow interval. be able to.
Moreover, since it is not necessary to wind the door body 10 around a drum etc. spirally, the intensity | strength of the door body 10 can fully be raised.

  Further, with the right stopper 64 removed from the lower frame member 62, the chains 40, 40 are rotated counterclockwise in FIG. 3, and the door body 10 is folded back along the chain lines of the chains 40, 40. After that, when each chain 40, 40 is further rotated in the same direction (counterclockwise), each surface of the door body 10 is disposed in a state opposite to the state in which the opening 101 is closed. Will be. Thereby, both surfaces of the door body 10 can be confirmed from one side, and the maintenance inspection of the door body 10 can be performed easily.

  Further, as shown in FIG. 4, there are provided pressing devices 50, 50 that press the outer peripheral surface of the roller 42 toward the outer peripheral edge of the opening 101 from the inner peripheral side of the chain line of each chain 40, 40. The respective chains 40, 40 to which the upper and lower edges of the door body 10 are connected are pressed toward the outer peripheral edge of the opening 101, and the upper and lower edges of the door body 10 are brought to the outer peripheral edge of the opening 101. Since it is pressed, the water-stopping property between the door body 10 and the outer peripheral edge of the opening 101 can be increased.

  Further, the pressing device 50 presses the outer peripheral surface of the roller 42 of the chain 40, and when the chain 40 is rotated, the roller 42 rolls with respect to the pressing device 50. Thereby, since the chain 40 can be smoothly moved while pressing the chain 40 by the pressing device 50, it is not necessary to stop the pressing by the pressing device 50 when the door body 10 is moved. The work for moving can be simplified.

  Furthermore, it is divided | segmented into the door stop member 100 fixed to the overflow part of a distribution tank, and the main body side frame member 60 which can be attached or detached to the door stop member 100, and removes the main body side frame member 60 from the door stop member 100. Thereby, since each shaft member 20,30, each chain 40,40, and the door body 10 can be removed integrally, each component can be replaced | exchanged easily.

[Modification]
The embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the spirit of the present invention. For example, in the present embodiment, as shown in FIG. 6, each chain 40, 40 is rotated counterclockwise to house the door 10 on the left side of the main body side frame member 60. , 40 may be rotated clockwise in FIG. 3 to house the door body 10 on the right side of the main body side frame member 60. In this case, the side end member 14 is attached to the left edge of the door body 10.

  Moreover, in the door body 10 of this embodiment, as shown to Fig.5 (a), although the intensity | strength is ensured by the some square pipe 12, if the intensity | strength of the door body 10 is fully ensured, it is. The door body may be composed of a single rubber plate, and the configuration is not limited.

  Further, as shown in FIGS. 3 and 4, the pressing device 50 of the present embodiment is configured such that the pressing plate 52 presses the outer peripheral surface of the roller 42 of the chain 40 by the urging force of the spring member 53. However, the configuration is not limited as long as the chain 40 can be moved while pressing the chain 40 toward the outer peripheral edge of the opening 101.

It is the whole perspective view showing the horizontal pulling movable weir of this embodiment. It is the schematic front view which showed the horizontal pulling movable weir of this embodiment. It is AA sectional drawing of FIG. 1 which showed the horizontal pulling movable weir of this embodiment. It is BB sectional drawing of FIG. 1 which showed the horizontal pulling movable weir of this embodiment. It is the figure which showed the door body and chain in the horizontal pulling movable dam of this embodiment, (a) is an expanded horizontal sectional view of a door body, (b) is an expanded perspective view of a chain, (c) is a door body and a chain. It is the expanded partial sectional view which showed the connection part. It is the figure which showed the horizontal pulling movable dam of this embodiment, and is a cross-sectional view of the state which accommodated the door body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Horizontally movable movable weir 10 Door body 20 Left shaft member 21 Sprocket 22 Sprocket 30 Right shaft member 31 Sprocket 32 Sprocket 40 Chain 42 Roller 43 Projection member 50 Pressing device 52 Pressing plate 60 Main body side frame member 64 Stopper 100 Door contact member 101 Opening 104 Water stop plate

Claims (3)

A door body that is superposed on the outer peripheral edge of the opening to close the opening and has flexibility in the lateral direction;
Two shaft members respectively disposed on both lateral sides of the opening and extending in the vertical direction;
Two annular chains hung around each shaft member,
The upper edge and lower edge of the door body are respectively connected to the chains,
The door body is configured to be folded around the axis of one of the shaft members along the chain line of each chain when the chain is rotated and the door body is moved laterally. Horizontally movable movable weir characterized by being made. In the chain, the outer peripheral surface of the roller interposed between the two upper and lower link plates protrudes laterally from each link plate,
The laterally movable movable weir according to claim 1, further comprising pressing means for pressing the outer peripheral surface of the roller toward the outer peripheral edge of the opening from the inner peripheral side of the chain line of the chain. The opening is formed in a door stop member fixed to the overflow part of the housing,
3. The laterally movable movable weir according to claim 1, wherein each of the shaft members is attached to a main body side frame member that is detachable from the door stop member.

Images