JP2012152724A - Sewage treatment facilities and post-installation assembly type water stop device in the facilities - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an assembly type water stop device capable of being installed in a sewage flow channel for blocking only inflow of sewage into a sewage treatment tank or the sewage flow channel at a part to be inspected, maintained, and repaired, without stopping the sewage inflow into the sewage flow channel when inspecting, maintaining, and repairing the sewage flow channel or the sewage treatment tank, in sewage treatment facilities in which many sewage treatment tanks have their sewage inlets opened at a sidewall of the one sewage flow channel.SOLUTION: This assembly type water stop device includes: a water stop unit guide support mechanism including two beams straddling a sewage flow channel and having both end parts anchored at both banks and a guide rail vertically provided at the beams and having a lower part inserted into the sewage flow channel to guide the water stop unit upon the mounting and to support it during the water stop; the water stop unit inserted into the sewage flow channel along a guide rail or a guide plate provided at the guide rail and interrupting a water current or limiting the flow channel; a packing material stuck on an edge end part of the water stop unit abutting against a sewage flow channel wall surface and a bottom surface; and a jack mechanism pressing the packing material against the wall surface and the bottom surface of the sewage flow channel to increase water-tightness.

Description

The present invention is a sewage treatment facility in which a number of sewage treatment tanks have their sewage inlets open on the side wall of a single sewage flow path.
When inspecting, repairing, or repairing the sewage flow path or the sewage treatment tank partially or individually, the sewage flow path of the part to be inspected, repaired, or repaired without stopping the sewage flow into the sewage flow path Open / close retrofit water stop device for preventing the inflow of sewage only into the sewage treatment tank, and sewage treatment by installing the device by inserting and abutting it on the same wall surface in the flow direction of the sewage flow channel Regarding facilities.

When sewage treatment facilities that treat sewage, such as sewage treatment facilities and human waste treatment, when maintenance inspections, repairs, or repairs of waterways, workers enter the waterways and work on the wall. It is necessary to partially block the passage of water from the point of view as well as from the viewpoint of hygiene of workers. For this reason, after stopping the flow of sewage from the past, a large number of sandbags are thrown into the place from the top of the waterway and piled up in a mountain shape to stop the water flow, or the water enclosed around the sandbag and drained inside is drained, Measures such as restoring the flow of sewage after the water stoppage has been confirmed have been taken, but it is not easy to install sandbags when the flow rate is high and the flow velocity is high. It has been practiced to temporarily stop the water supply temporarily and make the sewage stay in the water channel, then pile up sandbags and drain the downstream side. And when water leakage was found after resuming water supply, it was necessary to stop the water supply again and reload the sandbags.
However, in a facility where a large amount of treated water is sent to a plurality of sewage treatment tanks through a sewage flow path, such as a sewage treatment facility, the sewage to be treated flows in for 24 hours, so that the water supply to the sewage flow path can be stopped. Since the time is limited to a short time, and the time period is also limited to nighttime when the amount of water used is low, the reliability of the water stop work and the work efficiency of whether or not the water stop work is necessary many times, Therefore, ensuring the safety of workers was an important issue.
In addition, as a structure that can be used for waterway damming, an invention using a water shielding plate (see Japanese Patent Application Laid-Open No. 2001-241029) and a corner drop (see Japanese Patent Application Laid-Open No. 11-21861) is also disclosed. In each case, a rail-shaped receiving material and slide wall are prepared in advance to slide and insert a water shielding plate and a corner drop into the waterway weir. These techniques cannot be used in a water channel of a sewage treatment facility that has been used in the past and is not provided with a receiving material or a slide wall.
On the other hand, JP 2001-303539 A discloses:
`` A waterway damming device that is inserted into a waterway and blocks the water in the waterway, has a device body that is formed smaller than the cross section of the waterway and can be inserted into the waterway, and faces from the bottom surface of the device body to both sides. An elastic sealing material having an outer surface that can be in close contact with the inner surface of the water channel is disposed, and at least one side surface portion of the device main body is formed as an inclined surface portion that is inclined downwardly outward. It consists of a movable elastic seal material that can be moved up and down on the inclined surface of the main body, and a fixed elastic elastic material that is arranged from the lower surface of the instrument main body or from the lower surface to the other side surface. The movable side elastic seal material is lowered along the inclined surface portion of the instrument body while the side elastic seal material is in close contact with the bottom surface or the inner surface of the water channel, so that the movable side elastic seal is placed on the inner surface of the water channel facing the water channel. Waterway damming device, characterized in that adhering the sealing material "
However, it is disclosed as a damming device that does not require the receiving material or the slide wall on the waterway dam.
However, this waterway damming device is assumed to be used in a waterway with a relatively small amount of water flow, such as a U-shaped groove (see paragraphs [0006] and [0014] of the specification). In a large water channel such as a sewage treatment facility having a large amount of water and a fast water flow, the water channel damming device itself is washed away before the movable elastic sealing material is brought into close contact with the large water channel.

JP 2001-241029 A Japanese Patent Laid-Open No. 11-21861 JP 2001-303539 A

  In view of the above-described background art, the present invention provides a sewage treatment facility in which a large number of sewage treatment tanks have their sewage inlets provided on the side walls of a single sewage flow passage, and the sewage flow passage and the sewage treatment tank are partially provided. When inspecting, repairing, or refurbishing the sewage, or inspecting it individually, block the sewage from flowing into the sewage flow path or the sewage treatment tank of the sewage treatment tank, without stopping the flow of sewage into the sewage flow path. An open-and-close assembly-type water stop device that can be freely opened and closed is provided by inserting and abutting it on the wall surface that is flush with the flow direction of the sewage flow channel from above to contribute to efficient operation of the sewage treatment facility. .

The present inventors have solved the above problems by the following means.
(1) In a sewage treatment facility in which a large number of sewage treatment tanks open their sewage inlets on the side wall of one sewage flow path,
When inspecting, repairing, or repairing the sewage flow path or the sewage treatment tank partially or individually, the sewage flow path of the part to be inspected, repaired, or repaired without stopping the sewage flow into the sewage flow path A sewage characterized in that an openable / retractable assembly-type water stop device for preventing the inflow of sewage only into a sewage treatment tank is installed on the wall surface that is flush with the flow direction of the sewage flow channel from above. Processing facility.

(2) A retrofit assembly type water stop device in the sewage treatment facility as described in (1) above,
Two beam members straddling the sewage flow channel, both ends of which are firmly fixed to the shoulder upper portion of the sewage flow channel by anchor bolt fixing means, and the lower part of the beam material is suspended in the sewage flow channel A water stop unit guide support mechanism composed of a plurality of guide rails inserted into the water stop unit to be described later and supported at the time of water stop,
A water stop unit that is inserted into the sewage flow path along the guide rail of the water stop unit guide support mechanism, blocks the sewage flow, or restricts the flow path, and
A retrofit assembly type water stop device in a sewage treatment facility, wherein the water stop unit is configured with a jack mechanism that presses the water stop unit against the wall surface and bottom surface of the sewage flow path to enhance water tightness.

(3) The water stop unit is provided with a plurality of reinforcing horizontal rails on the back surface of a metal plate flat plate with the upstream side in the sewage flow direction formed slightly smaller in accordance with the cross-sectional shape of the sewage flow path. A water plate body,
Attached to a mounting plate protruding in the vicinity of the left and right side end portions of the plurality of reinforcing horizontal bars and in the vicinity of the end portion of the portion where the metal plate flat plate lower corner is formed in accordance with the cross-sectional shape of the sewage flow path. It is made up of a movable frame for water stop that is in contact with the metal plate flat plate of the water stop plate main body by the jack bolt and slides while keeping water tightness, and the packing material is adhered to the outside.
In the sewage treatment facility according to the above item (2), the water stop unit guide support mechanism includes two pairs of guide rails that sandwich the vicinity of both left and right ends of the water stop unit from the front and the back. Retrofit assembly type water stop device.

(4) In the water stop unit, a horizontal cross section having an opening on a surface abutting on the side wall of the sewage flow path has a U-shape, and the lower end portions of the two opposite side surfaces are in the cross section shape of the lower end portion of the sewage flow path side wall The water stop wall body of the metal plate cut out together, the water stop frame fixed to the edge of the water stop wall abutting against the wall surface and the bottom surface of the water stop wall body, and affixed to the water stop frame The reinforcing horizontal beam is fixed to a plurality of places including the outer upper end of the water blocking wall, and the reinforcing horizontal beam is fixed to the two opposite surfaces. Each has a guide pin on the outside,
The guide rail of the water stop unit guide support mechanism has an inclined surface that guides the two guide pins provided on the left and right side surfaces of the water stop unit to the side of the sewage channel while guiding the guide pins vertically downward. The retrofit assembly type water stop apparatus in the sewage treatment facility according to item (2), further comprising a plate.
(5) In the preceding item (4), the upper and lower guide pins are provided at a position where the lower guide pin is closer to the sewage flow path wall surface by 30 to 50 mm than the upper guide pin. A post-assembly water stop device in the sewage treatment facility described in 1.
(6) A guide plate that guides the guide pin moves the two guide pins obliquely downward by pressing and lowering the water stop unit so that the opening of the water stop wall body becomes the wall surface of the sewage flow path. After the two inclined surfaces to be contacted and the opening of the water blocking wall body are in contact with the wall surface of the sewage flow path, the two guide pins are further guided downward to move the lower end of the water blocking wall body. The retrofit assembly type water stop device in the sewage treatment facility according to the above item (4) or (5), wherein two vertical portions to be brought into contact with the bottom surface of the sewage flow path are alternately formed.

The following effects can be exhibited by the assembled water stop device of the present invention.
<1> In a sewage treatment facility in which a large number of sewage treatment tanks open their sewage inlets on the side wall of one sewage flow path,
When inspecting, repairing, or repairing the sewage flow path or the sewage treatment tank partially or individually, the sewage flow path of the part to be inspected, repaired, or repaired without stopping the sewage flow into the sewage flow path An open / closed assembly-type water stop device that prevents the inflow of sewage only into the sewage treatment tank is installed on the wall surface that is flush with the flow direction of the sewage flow path, so that it can be operated Inspection, repair, and refurbishment work can be carried out without stopping operation, improving work efficiency and ensuring safety.

<2> The retrofit assembly type water stop device in the sewage treatment facility according to claim 1,
Two beam members straddling the sewage flow channel, both ends of which are firmly fixed to the shoulder upper portion of the sewage flow channel by anchor bolt fixing means, and the lower part of the beam material is suspended in the sewage flow channel A water stop unit guide support mechanism composed of a plurality of guide rails inserted into the water stop unit to be described later and supported at the time of water stop,
A water stop unit that is inserted into the sewage flow path along the guide rail of the water stop unit guide support mechanism, blocks the sewage flow, or restricts the flow path, and
Because it is configured with a jack mechanism that presses the water stop unit against the wall surface and bottom surface of the sewage flow path to increase water tightness,
Even in a sewage channel such as a sewage treatment facility with a large flow rate and a high flow rate, the water stop unit can be safely and reliably inserted into the sewage channel while water is being supplied, and the water stop unit and the side wall of the sewage channel , Or the water leakage between the bottom of the sewage flow path can be suppressed by the packing material pressed by the jack mechanism, and the water can be completely sealed, and the sewage flow path and the sewage treatment tank can be inspected, repaired and repaired safely and reliably. Can be implemented.
In addition, since the work can be performed without stopping the water supply, there is no restriction on the time period during which the water stop operation is performed, and there is no unreasonable process during the daytime, ensuring worker safety and increasing work efficiency. The construction period can be shortened.

<3> The water stop unit is provided with a plurality of reinforcing cross rails on the back surface of a metal plate flat plate whose surface is the upstream side in the waste water flow direction, which is formed slightly smaller in accordance with the cross-sectional shape of the waste water flow path. A water plate body,
Near the left and right side end portions of the plurality of reinforcing horizontal rails, and the lower corner of the metal plate flat plate was attached to a mounting plate protruding from the end surface of the portion cut off in accordance with the cross-sectional shape of the sewage flow path It consists of a movable frame for water stop that slides while maintaining watertight contact with the metal plate flat plate of the water stop plate body by jack bolts, and the packing material is adhered to the outside,
And since the said water stop unit guide support mechanism is provided with two pairs of guide rails which clamp the right-and-left both ends vicinity of the said water stop unit from the front and back, the water stop of the full width of a sewage flow path is attained.
And by draining the downstream side of the sewage flow path where the running water has stopped, the leakage state between the water stop unit and the wall surface of the sewage flow path can be visually confirmed. The water stop movable frame is pressed against the wall surface of the sewage channel by operating the water leakage, and the leakage of water can be easily stopped by the action of the packing material, and the subsequent inspection, repair, repair, etc. can be carried out completely and reliably. Can be shortened.

<4> In the water stop unit, a horizontal cross section having an opening on a surface contacting the side wall of the sewage flow path has a U-shape, and lower ends of two opposite side surfaces are in a cross section of the lower end of the sewage flow path side wall. The water stop wall body of the metal plate cut out together, the water stop frame fixed to the edge of the water stop wall abutting against the wall surface and the bottom surface of the water stop wall body, and affixed to the water stop frame The reinforcing horizontal beam is fixed to a plurality of places including the outer upper end of the water blocking wall, and the reinforcing horizontal beam is fixed to the two opposite surfaces. Each has a guide pin on the outside,
The guide rail of the water stop unit guide support mechanism has an inclined surface that guides the two guide pins provided on the left and right side surfaces of the water stop unit to the side of the sewage channel while guiding the guide pins vertically downward. Since it is equipped with a plate, it can be operated by placing it in one section of the sewage flow channel where inspection, repair, or repair work is performed without stopping the entire width of the sewage flow channel, or at the inlet of the sewage treatment tank. Water can be secured to the normal operation part located downstream from the location, and the facility can be operated continuously without reducing the capacity of the facility more than necessary.
<5> In addition to the effect of <4> above, guide rails for guiding the guide pins projecting on the two opposite side surfaces of the water blocking wall body guide the two guide pins obliquely downward. Two inclined portions for moving the abutment wall body to make contact with the wall surface of the sewage flow channel, and after the opening of the water stop wall body abuts against the wall surface of the sewage channel, the two guide pins Since the two vertical portions are alternately formed so that the lower end portion of the water blocking wall body is brought into contact with the bottom surface of the sewage flow path by being guided and moved downward, by pressing and moving the water blocking wall downward The opening side surface of the water blocking wall body can be brought into contact with the wall surface of the sewage flow channel and the lower end portion can be brought into contact with the bottom of the sewage flow channel only by the operation. Water from the packing material in contact with the wall surface of the sewage channel because it is located in the vertical part of the rail Pressed against stationary vertical portion by the reaction force direction, the water stop wall is kept stable, water tightness is ensured also by draining the isolated portion by the water stop wall.

The perspective view of this invention assembly-type water stop apparatus (Example 1) Configuration perspective view of a water stop unit of the assembled water stop device shown in FIG. The structure perspective view of the water stop unit guide support mechanism of the assembly-type water stop apparatus shown in FIG. 2 is a perspective view of the water stop unit of FIG. 2 when inserted into the water stop unit guide support mechanism of FIG. FIG. 2 is a perspective view when the water stop unit of FIG. 2 is completely inserted into the water stop unit guide support mechanism of FIG. Assembly type water stop device perspective view of the present invention (Example 2) The structure perspective view of the water stop unit of the assembly-type water stop apparatus shown in FIG. The structure perspective view of the water stop unit guide support mechanism of the assembly-type water stop apparatus shown in FIG. 7 is a perspective view showing a state when the water stop unit of FIG. 7 is completely inserted into the water stop unit guide support mechanism of FIG. The top view which shows the use condition in the sewage flow path of the assembly-type water stop apparatus of Example 1. The top view which shows the use condition in the sewage flow path of the assembly-type water stop apparatus of Example 2.

EMBODIMENT OF THE INVENTION The form for implementing the assembly-type water stop apparatus of this invention is demonstrated based on drawing of an Example.
FIG. 1 is a perspective view of the assembly type water stop device of the present invention (Example 1), FIG. 2 is a perspective view of the structure of the water stop unit of the assembly type water stop device shown in FIG. 1, and FIG. FIG. 4 is an explanatory diagram of mounting of the water stop unit to the water stop unit guide support mechanism (at the start of mounting), and FIG. 5 is a water stop unit guide support of the water stop unit. FIG. 6 is a perspective view of the assembly type water stop device of the present invention (Example 2), and FIG. 7 is a view of stopping the assembly type water stop device shown in FIG. FIG. 8 is a structural perspective view of the water stop unit guide support mechanism of the assembled water stop device shown in FIG. 6, and FIG. 9 is a water stop unit guide support mechanism of FIG. It is a state perspective view at the time of insertion completion.
FIG. 10 is a plan view showing the usage state in the sewage flow path of the assembled water stop device of the first embodiment, and FIG. 11 is a plan view showing the use condition in the sewage flow channel of the assembled water stop device of the second embodiment. is there.
In the figure of the first embodiment (FIGS. 1 to 5), A indicates a water stop unit, B indicates a water stop unit guide support mechanism, 11 indicates a beam member, 12 indicates a guide rail, Is a flat steel, 15 is an H-shaped beam member, 20 is a water stop plate body, 21 is a metal plate flat plate, 22 is a reinforcing side rail, 23 is a mounting plate, 24 is a movable frame for water stop, and 41 is A hydraulic jack 42 is a jack bolt.
Moreover, in the figure (FIGS. 6-8) of Example 2, A 'shows a water stop unit, B' shows a water stop unit guide support mechanism, 11 is a beam material, 12 is a guide rail, 13 is a guide plate, 14 is a flat steel, 16 is an overhanging guide, 17 is a joint material, 18 is a connecting material, 19 is a beam material for attaching a jack, 31 is a water blocking wall body, 32 is a horizontal beam for reinforcement, and 33 is a water blocking frame at the bottom of the bottom. , 34 is a bottom side waterstop frame, 35 is a hunch waterstop frame, 36 is a wall surface waterstop frame, 37 and 38 are guide pins, 39 is a jack mounting plate, and 41 is a hydraulic jack.
Further, in FIGS. 10 and 11, 51 and 51 ′ are assembly-type water stop devices of the present invention, 52 is a sewage flow path, 53 is a sewage treatment tank, 54 is a sewage supply port, and arrows indicate the water flow. Yes.

In a sewage treatment facility in which a large number of sewage treatment tanks 53 have their sewage inlets opened on the side walls of one sewage flow path 52, the sewage flow path 52 and the sewage treatment tank 53 are partially or individually provided. It is necessary to prevent the inflow of sewage only into the sewage flow path 52 and the sewage treatment tank 53 of the part to be inspected, repaired or repaired without stopping the inflow of sewage into the sewage flow path 52 at the time of inspection, repair, or repair. is there.
For this purpose, as shown in FIG. 10 and FIG. 11, an assembly-type water stop device is disposed in the sewage flow path 52, but as shown in FIG. 1 to stop water supply to the tank 1 or a treatment tank No. 1 having an inlet at the center of the sewage flow path 52. 3, no. 4, a plate-shaped assembly-type water stop device 51 that blocks the entire width of the sewage flow path may be used, but the treatment tank No. 4 having an inlet near the sewage supply port 54 may be used. In order to stop the water supply to No. 2 and continue the water supply to the other processing tanks, as shown in FIG. An assembly-type water stop device 51 ′ having a U-shaped horizontal cross section that closes the two water inlets is required, and in such a sewage treatment facility, these two types of assembly-type water stop devices 51, 51 ′ are prepared.

The retrofitting assembly type water stop device of the present invention satisfies the above-mentioned requirements, and the basic configuration is straddling the sewage flow channel 52, and both ends thereof are firmly fixed to the upper shoulders of the sewage flow channel by anchor bolt fixing means. Two beam members 11 fixed to the beam member, and a plurality of rod members that are suspended from the beam member 11 and whose lower part is inserted into a sewage flow path to guide and support the water stop unit when the water stop unit will be described later. A water stop unit guide support mechanism B or B ′ comprising the guide rails 12 of
Inserted into the sewage flow path 52 along the guide plate 12 provided on the guide rail 12 of the water stop unit guide support mechanism B or the guide rail 12 of the water stop unit guide support mechanism B ′, and interrupts the water flow, or A water stop unit A or A ′ for restricting the flow path;
A packing material P affixed to the edge of the water stop unit A or A ′ that contacts the wall surface and bottom surface of the sewage flow path;
It is composed of a jack mechanism (hydraulic jack 41, jack bolt 42) that increases the water tightness by pressing the packing material P adhered to the edge of the water stop unit against the wall surface and bottom surface of the sewage flow path.
Examples of two retrofitting assembled water stop devices 51 and 51 ′ of the present invention having different shapes of the water stop unit A or A ′ will be described in detail with reference to the drawings.

In the embodiment of the plate-like assembled water stop device 51 of the present invention, the water stop unit A is formed 30 to 50 mm smaller than the cross-sectional shape of the sewage flow path 52 (see FIG. 1), as shown in FIG. A water stop plate body 20 provided with a plurality of reinforcing horizontal bars 22 on the back surface of the metal plate flat plate 21 having the upstream side in the sewage flow direction as a surface;
In the vicinity of the left and right side end portions of the plurality of reinforcing cross rails 22 and on the mounting plate 23 projecting from the end face of the portion where the lower corner of the metal plate 21 is cut off in accordance with the cross-sectional shape of the sewage flow path 52. With the water stop movable frame 24 formed by abutting against the metal plate 21 of the water stop plate main body 20 by the attached jack bolt 42 and sliding while maintaining watertightness, and the packing material P is adhered to the outside thereof. It is configured.
And as shown in FIG. 3, the said water stop unit guide support mechanism B is the metal plate flat plate 21 in the side surface of the horizontal rail 22 for a back surface from the front and back, the back surface vicinity of the both right-and-left both ends of the said water stop unit A. It is provided with two pairs of guide rails 12 that sandwich the surface of itself.
Therefore, in the water stop unit guide support mechanism B in the first embodiment, the two beam members 11 straddling the sewage flow path 52 are arranged so that the thickness of the water stop unit A and the water stop unit A are the same. Both ends thereof are welded to the flat steel 14 so as to be kept at an interval determined by the width of the two guide rails 12 to be sandwiched, and are integrated together with the four guide rails 12.

As shown in FIG. 10, the assembly type water stop device 51 of the first embodiment has a portion that does not obstruct the inflow of sewage into the other treatment tank 53 even if the sewage flow in the sewage flow channel 52 is completely blocked as shown in FIG. 10. It is used and installed in the sewage flow path 52 according to the following procedure shown in FIGS.
a. As shown in FIG. 3, the water stop unit guide support mechanism B is inserted into the sewage flow channel 52 at the lower part of the guide rail 12 so that the beam 11 is straddled over the sewage flow channel 52, and the flat steel 14 is It is firmly fixed to the upper part of both shoulders of the sewage flow path by anchor bolt fixing means.
b. The water stop unit A is inserted along the four guide rails 12 from the upper part of the water stop unit guide support mechanism B that is fixed over the dirty water flow path 52 (see FIG. 4). In this case, it is desirable to insert the sewage flow path 52 after reducing the flow velocity of the portion, but since the guide rail 12 is strong, there may be a little flow.
c. The four guide rails 12 (see FIG. 3) that are inserted along the four guide rails 12 and extend to a position higher than the upper end of the water-stopping unit that has fallen into the sewage flow path 52 due to its own weight and is stationary. A beam 15 assembled in an H shape is passed to the upper end, and a hydraulic jack 41 is attached between the center of the H-shaped beam 15 and the upper end of the water blocking plate body 20 (see FIG. 1).
d. The hydraulic jack 41 is operated and the packing material P adhered to the lower end of the water stop unit A is pressed against the bottom surface of the sewage flow path 52 to block the water flow, and the downstream side blocked by the water stop unit is The water is discharged by draining the worker to the sewage flow path 52 on the back side of the water stop unit A, which has run out of water, and turning the jack bolt 42 provided on the water stop plate body 20 by the worker to stop the water. The movable frame 24 is moved, and the packing material P adhered to the outside thereof is pressed against the wall surface of the sewage flow path to suppress leakage while visually observing water leakage from the side surface of the water stop unit. After that, draining completely enables work in a dry environment.
e. The withdrawal of the assembly-type water stop device 51 of the first embodiment may be performed by a procedure reverse to the above installation procedure.

In the second embodiment according to the assembling type water stop device 51 ′ having a U-shaped cross section according to the present invention, the water stop unit A ′ is in contact with the side wall of the sewage channel 52 as shown in FIG. The horizontal cross-section having an opening as a surface has a U-shape, and the water-stop wall 31 of a metal plate in which the lower ends of the two opposite side faces are cut out according to the cross-sectional shape of the lower end of the side wall of the sewage flow channel 52, Affixed to the water stop frames 33, 34, 35, 36 fixed to the edge portions of the water stop wall 31 that contact the wall surface and the bottom surface of the sewage flow path, and the water stop frames 33, 34, 35, 36. The reinforcing crosspieces 32 are fixed to a plurality of locations including the upper end portion outside the water blocking wall 31 and the two upper and lower portions fixed to the two opposite surfaces are formed. Guide pins 37 and 38 are provided on the reinforcing horizontal rail 32 toward the outside.
And as shown in FIG. 8, the water stop unit guide support mechanism B ′ in the second embodiment has two beam members straddling the sewage flow path 52 so as to sandwich the left and right sides of the water stop unit A ′. 11 and guide pins 37, 38 that are fixed in the vicinity of the center of each of the two beam members 11 and project from the reinforcing lateral bars 32 on the two opposite sides of the water blocking wall 31. Guide rail 12 having a guide plate 13 having an inclined surface that is guided to the side of the sewage flow channel while being guided to the side of the sewage flow channel, and fixed to both ends of the beam material 11 to fix the beam material 11 to the upper shoulder portion of the sewage flow channel 52. It is comprised from the flat steel 14 for doing.
The guide plate 13 pushes and lowers the water stop unit to guide and move the two guide pins 37 and 38 obliquely downward, so that the opening portion of the water stop wall body 31 is formed on the side wall of the sewage flow path 52. After the two inclined portions to be contacted and the opening portion of the water blocking wall body 31 are in contact with the side wall of the sewage flow path 52, the two guide pins 37 and 38 are further guided and moved downward to stop the stopping. The two vertical parts which make the lower end part of the water wall 31 contact the bottom face of a sewage flow path are formed alternately.
Further, the beam member 11 is provided with a straddling guide 16 for extending the beam member 11 so that the water stop unit A ′ is surely brought into contact with the side wall of the sewage flow path 52 by the guide plate 13. In addition, in order to dispose the hydraulic jack 41 that presses and lowers the water stop unit, a joint member 17 that supports the beam member 19 installed above the water stop unit is provided.
As shown in FIG. 6, the water stop unit guide support mechanism B ′ configured as described above supports and guides the water stop unit A ′ from the left and right, and therefore includes an inclined portion and a vertical portion of the guide plate 13. The guide pins 37 and 38 of the water stop unit are held at the side surfaces so as to be in contact with each other, and the left and right water stop unit guide support mechanisms B ′ are connected by a connecting member 18 having a predetermined length.

As shown in FIG. 11, the assembled water stop device 51 ′ of the second embodiment needs to stop water supply to a specific treatment tank as shown in FIG. 11 and continue water supply to the treatment tank located downstream. The sewage flow path 52 is installed in the following procedure.
a. One side of the water stop unit guide support mechanism B ′ is placed over the sewage flow path 52 so that the lower part of the guide rail 12 is suspended in the sewage flow path 52, and the flat steel 14 Is firmly fixed to both banks of the sewage flow channel 52 by anchor bolt fixing means. At this time, it is important that the straddling guide 16 suspended from the beam member 11 is brought into contact with the side wall of the sewage flow path 52 on the water stop side so as to ensure the watertightness during use. .
b. The other water-stop unit guide / support mechanism B ′ has the beam member 11 straddled over the sewage flow path 52 in the same manner as the means a, and then the one water-stop unit guide / support mechanism that is straddled and fixed first. After connecting to B ′ with the connecting member 18, the flat steel 14 is fixed to both ends of the upper ends of the shoulders of the sewage channel 52 by anchor bolt fixing means (see FIG. 8).
In addition, in FIG. 8, although the length of the beam material 11 straddling the sewage flow path 52 was drawn equally, as shown in FIG. 11, when the width | variety of the sewage flow path in which the beam material 11 is straddled differs. Needless to say, the beam members 11 having different lengths are used so as to match the width.
c. The guide pins 37 and 38 of the water stop unit A ′ are brought into contact with the guide plates 13 of the pair of left and right water stop unit guide support mechanisms B ′ that are straddled and fixed over the sewage flow path 52 at a constant interval. And install the water stop unit A ′.
d. After the mounted water stop unit A ′ descends into the sewage flow path 52 due to its own weight along the two guide rails 12 (see FIG. 9), the left and right water stop unit guide support mechanism B ′ is joined. A jack attachment beam member 19 is passed between the members 17 and 17, and a hydraulic jack 41 is attached to a jack attachment plate 39 projecting inwardly at the upper ends of two opposite side surfaces of the water stop unit A ′. (See FIG. 6).
e. By operating the hydraulic jack 41 and pressing the water stop unit A ′ downward, the guide pins 37 and 38 of the water stop unit A ′ are guided and guided obliquely downward along the shape of the guide plate 13. By pressing the packing material P adhered to the side water blocking frame 36 against the side surface of the sewage flow path 52 to ensure water tightness on the side wall side, and the guide pins 37 and 38 are guided and guided in the downward vertical direction. The bottom surface water blocking frame 33, the bottom side water blocking frame 34, and the packing material P adhered to the water retaining frame 35 on the bottom surface and the bottom surface side of the sewage flow channel 52 by pressing against the bottom surface and the haunch surface. Ensure water tightness.
f. The sewage remaining inside the water-stopping unit A ′ whose water-tightness is ensured is discharged to ensure a dry working space free from sewage.
g. The assembly type water stop device according to the second embodiment may be withdrawn by a procedure reverse to the above installation procedure.

A, A ′: Water stop unit B, B ′: Water stop unit guide support mechanism 11: Beam material 12: Guide rail 13: Guide plate 14: Flat steel 15: Beam material assembled in an H shape 16: Stretching guide 17: Joint material 18: Connecting material 19: Beam material for jack installation 20: Water stop plate body 21: Metal plate flat plate 22: Reinforcement crosspiece 23: Mounting plate 24: Water stop movable frame 31: Water stop wall body 32 : Reinforcement cross rail 33: Bottom rear water stop frame 34: Bottom side water stop frame 35: Hunch part water stop frame 36: Wall surface water stop frame 37, 38: Guide pin 39: Jack mounting plate 41: Hydraulic jack 42: Jack Bolt 51, 51 ': Retrofit assembly type water stop device 52: Sewage flow path 53: Sewage treatment tank 54: Sewage supply port P: Packing material

Claims (6)

In a sewage treatment facility where a large number of sewage treatment tanks have their sewage inlets opened on the side wall of one sewage flow path,
When inspecting, repairing, or repairing the sewage flow path or the sewage treatment tank partially or individually, the sewage flow path of the part to be inspected, repaired, or repaired without stopping the sewage flow into the sewage flow path A sewage characterized in that an openable / retractable assembly-type water stop device for preventing the inflow of sewage only into a sewage treatment tank is installed on the wall surface that is flush with the flow direction of the sewage flow channel from above. Processing facility. The retrofit assembly type water stop device in the sewage treatment facility according to claim 1,
Two beam members straddling the sewage flow channel, both ends of which are firmly fixed to the shoulder upper portion of the sewage flow channel by anchor bolt fixing means, and the lower part of the beam material is suspended in the sewage flow channel A water stop unit guide support mechanism composed of a plurality of guide rails inserted into the water stop unit to be described later and supported at the time of water stop,
A water stop unit that is inserted into the sewage flow path along the guide rail of the water stop unit guide support mechanism, blocks the sewage flow, or restricts the flow path, and
A retrofit assembly type water stop device in a sewage treatment facility, wherein the water stop unit is configured with a jack mechanism that presses the water stop unit against the wall surface and bottom surface of the sewage flow path to enhance water tightness. The water stop plate main body provided with a plurality of reinforcing cross rails on the back surface of the metal plate flat plate with the upstream side in the sewage flow direction formed on the upstream side in the sewage flow direction, the surface of the water stop unit being slightly smaller according to the cross-sectional shape of the sewage flow path When,
Attached to a mounting plate protruding in the vicinity of the left and right side end portions of the plurality of reinforcing horizontal bars and in the vicinity of the end portion of the portion where the metal plate flat plate lower corner is formed in accordance with the cross-sectional shape of the sewage flow path. It is made up of a movable frame for water stop that is in contact with the metal plate flat plate of the water stop plate main body by the jack bolt and slides while keeping water tightness, and the packing material is adhered to the outside.
The retrofit in a sewage treatment facility according to claim 2, wherein the water stop unit guide support mechanism comprises two pairs of guide rails that sandwich the vicinity of both left and right ends of the water stop unit from the front and back sides. Assembly type water stop device. The water stop unit has a U-shaped horizontal cross section with the surface that contacts the side wall of the sewage channel as an opening, and the lower ends of the two opposite side surfaces are cut out in accordance with the cross-sectional shape of the lower end of the sewage channel side wall. A water stop wall body of the metal plate, a water stop frame fixed to an edge of the water stop wall abutting against the wall surface and bottom surface of the water stop wall body, and a packing material affixed to the water stop frame; The reinforcing horizontal beam is fixed to a plurality of locations including the outer upper end portion of the water blocking wall body, and the upper and lower two reinforcing horizontal beams fixed to the two opposing surfaces are respectively outside. A guide pin is provided toward the
The guide rail of the water stop unit guide support mechanism has an inclined surface that guides the two guide pins provided on the left and right side surfaces of the water stop unit to the side of the sewage channel while guiding the guide pins vertically downward. The post-assembly assembly type water stop apparatus in the sewage treatment facility according to claim 2, further comprising a plate.   5. The sewage according to claim 4, wherein the guide pins at the two upper and lower portions are provided at positions where the lower guide pin is closer to the sewage flow path wall surface by 30 to 50 mm than the upper guide pin. Retrofitting assembly type water stop device at a treatment facility. A guide plate that guides the guide pins pushes and lowers the water stop unit to guide and move the two guide pins obliquely downward to bring the opening of the water stop wall body into contact with the wall surface of the sewage flow path. After the two inclined surfaces and the opening of the water blocking wall body are in contact with the wall surface of the sewage flow path, the two guide pins are further guided down to move the lower end of the water blocking wall body to the sewage flow path. The retrofit assembly type water stop device in a sewage treatment facility according to claim 4 or 5, wherein two vertical portions abutting on the bottom surface are alternately formed.

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