JP7196013B2 - Installation method of storage tank - Google Patents

Description

The present invention relates to a method for installing a reservoir.

As a drainage system for housing complexes, etc., there is a so-called siphon drainage system that utilizes the siphon principle. According to the siphon drainage system, when draining water from plumbing equipment, the siphon force generated in the siphon drainage pipe can promote the drainage. On the other hand, in the siphon drainage system, assuming that a large amount of liquid is drained at once, a temporary A reservoir must be provided in which the liquid can be stored. As such a storage tank, there is one in which a storage part is provided between the inflow port and the outflow port of the storage tank (see, for example, Patent Document 1).

JP 2016-108746 A

According to the storage tank described above, a large amount of liquid can be discharged quickly and smoothly without obstruction of the liquid flow near the outlet.

On the other hand, it is conceivable to provide liquid retention spaces on both the left and right sides of the liquid channel of the inlet and outlet of the storage tank. According to such a storage tank, it is possible to quickly and smoothly flow out a large amount of liquid while suppressing the length of the liquid flow path in the storage tank.

On the other hand, such a storage tank is inclined at a certain angle along the liquid channel so that the inlet is located below the outlet and the liquid retention spaces on both the left and right sides are generally horizontal. If you install it against the base with , the liquid can be discharged efficiently.

However, when liquid retention spaces are provided on both the left and right sides of the liquid channel of the storage tank, leveling is not easy when installing the storage tank. In particular, if the base is not horizontal, it may be difficult to level when installing the reservoir.

An object of the present invention is to provide a method for installing a storage tank that facilitates leveling when installing the storage tank.

A storage tank installation method according to the present invention is a storage tank for installing a storage tank provided with liquid retention spaces on both left and right sides of a liquid flow path connecting an inflow port and an outflow port on a base. In the installation method of , attaching a height-adjustable first fixture to at least one of the inflow side and the outflow side of the storage tank to perform the first fixation of the storage tank to the base a fixing step; a first height adjusting step of adjusting the height of the liquid flow path in the extending direction by adjusting the height of the first fixture; A second fixing step of attaching an adjustable second fixture to secondly fix the storage tank to the base, and adjusting the height of the second fixture to adjust the horizontal height of the storage tank. and a second height adjustment step of adjusting. According to the method for installing a storage tank according to the present invention, leveling is facilitated when installing the storage tank.

In the storage tank installation method according to the present invention, it is preferable to use the upper surface of the top plate of the storage tank as an index surface for the bottom surface of the liquid channel when performing the height adjustment. In this case, leveling when installing the storage tank can be performed more easily.

The storage tank installation method according to the present invention further includes a pipe connection step of connecting a pipe to one of the inlet and the outlet, and after the pipe connection step, in the first fixing step, the inlet Alternatively, it is preferable to attach the first fixture to the other of the outlets. In this case, leveling when installing the storage tank can be performed more easily.

Preferably, in the method for installing a storage tank according to the present invention, the pipe is connected to the outflow port in the pipe connection step, and the first fixture is attached to the inflow port in the first fixing step. In this case, leveling when installing the storage tank can be performed more easily.

In the storage tank installation method according to the present invention, the inflow port of the storage tank protrudes toward the inflow side, and in the first fixing step, the first fixture is attached so as to sandwich the inflow port. is preferred. In this case, leveling when installing the storage tank can be performed more easily.

In the method for installing a storage tank according to the present invention, in the pipe connecting step, a flexible pipe having flexibility is used as the pipe, and the flexible pipe is positioned at a certain distance from either the inlet or the outlet. It is preferable that the flexible tube is fixed to the base while being bent in the extending direction of the flexible tube. In this case, even if the connection of the storage tank is such that it receives repulsion by bending the pipe, the pipe is fixed to the base in a bent state at a position closer to either the inlet or the outlet. be able to.

In the storage tank installation method according to the present invention, the second fixture has a ground plate that can be grounded to a base and a cover that covers the ground plate, and the second fixture includes the cover It is preferably attached to the base by In this case, the lifting of the second fixture can be prevented without attaching the grounding plate of the second fixture to the base.

ADVANTAGE OF THE INVENTION According to this invention, the installation method of a storage tank which facilitates leveling when installing a storage tank can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic system diagram showing, in partial cross-section, an example of a drainage system that can be constructed using the storage tank installation method according to the present invention. 1 is an example of a storage tank that can be employed in a method for installing a storage tank according to the present invention, and is a perspective view showing an inflow side of the storage tank from above. FIG. Figure 3 is a perspective view from above of the outflow side of the reservoir of Figure 2; FIG. 3 is a front view showing the inflow side of the reservoir of FIG. 2; Figure 3 is a rear view showing the outflow side of the reservoir of Figure 2; FIG. 3 is a plan view showing the storage tank of FIG. 2 from above; FIG. 3 is a bottom view showing the reservoir of FIG. 2 from below; FIG. 5 is a cross-sectional view taken along line AA of FIG. 4; FIG. 5 is a cross-sectional view taken along the line BB of FIG. 4; 6 is a cross-sectional view taken along line CC of FIG. 5; FIG. 3 is a right side view showing the storage tank of FIG. 2 from the right side; FIG. 3 is a left side view showing the storage tank of FIG. 2 from the left side; FIG. FIG. 7 is a cross-sectional view taken along line DD of FIG. 6; FIG. 7 is a cross-sectional view taken along line EE of FIG. 6; FIG. 7 is a perspective view showing the FF section of FIG. 6 from the inflow side; FIG. 7 is a perspective view showing the GG section of FIG. 6 from the inflow side; FIG. 7 is a cross-sectional view taken along line GG of FIG. 6; FIG. 7 is a cross-sectional view taken along line HH of FIG. 6; Fig. 10 is another example of a storage tank that can be employed in the method for installing a storage tank according to the present invention, and is a perspective view showing the inflow side of the storage tank from above. 4 is a flow chart for explaining a method for installing a storage tank according to one embodiment of the present invention. Figure 21 is a perspective view from above of the outflow side of the reservoir of Figure 2 installed according to the flow of Figure 20; 21 is a perspective view from above of the inflow side of the reservoir of FIG. 2 installed according to the flow of FIG. 20; FIG. FIG. 23 is a perspective view showing an enlarged region including the first fixture of FIG. 22; FIG. 23 is an enlarged perspective view showing a region including the second fixture of FIG. 22;

Hereinafter, a method for installing a storage tank according to one embodiment of the present invention will be described in detail with reference to the drawings.

[Drainage system that can be constructed using the storage tank installation method according to the present invention]
FIG. 1 is a schematic system diagram showing, in partial cross section, an example of a drainage system that can be constructed using the storage tank installation method according to the present invention. In FIG. 1, reference numeral 100 is an example of a drainage system that can be constructed using the method for installing a storage tank according to the present invention. In this example, the drainage system 100 is a siphon drainage system. A siphon drainage system is a drainage system that utilizes the siphon principle. According to the siphon drainage system, when draining water from plumbing equipment, the siphon force generated in the siphon drainage pipe can promote the drainage. A siphon drainage system is employed, for example, as a drainage system for an apartment complex in which one building is divided into a plurality of floors.

In this example, the drainage system 100 comprises a plumbing appliance 110 , an appliance drain 120 , a reservoir 1 according to an embodiment of the invention, and a siphon drain 130 .

The plumbing appliances 110 are arranged on each floor of the building. Examples of the plumbing appliance 110 include a bathtub (for example, a unit bath), a washstand, and a sink. In this example, the plumbing appliance 110 is a bathtub.

The appliance drain pipe 120 connects the plumbing appliance 110 and the storage tank 1 . In this example, the instrument drain pipe 120 is arranged in the underfloor space S. In this example, the underfloor space S is a space formed between the floor member 101 and the floor slab 102 of the building. Also in this example, the instrument drain pipe 120 is composed of a vertically extending upstream portion 120a and a laterally extending downstream portion 120b. The upstream portion 120a is connected to the plumbing fixture 110 . The downstream portion 120b is connected to the upstream portion 120a. In this example, the downstream portion 120b slopes downward from the upstream portion 120a toward the downstream. The downstream portion 120b is connected to the reservoir 1 . In this example, a drainage trap 121 is interposed in the middle of the downstream portion 120b.

The siphon drain pipe 130 connects the storage tank 1 and the vertical pipe 150 . The vertical pipes 150 are drainage pipes that vertically penetrate each floor of the building. In this example, the siphon drain pipe 130 is composed of a horizontal pipe 130a arranged in the underfloor space S and a vertical pipe 130b penetrating the floor slab 102 and extending downward. The horizontal draw pipe 130a is connected to the storage tank 1 . In this example, the horizontal drawing pipe 130a extends in the horizontal direction so as to be substantially horizontal and without slope. Specifically, the pipes are laid substantially horizontally and without slope along the floor slab 102 of the floor on which the plumbing fixtures 110 are installed. The vertical pipe 130b is connected to the horizontal pipe 130a. The vertical pipe 130 b is connected to the vertical pipe 150 via a pipe joint 140 . Specifically, the vertical pipe 130b extends substantially vertically below the horizontal pipe 130a to form a hanging portion and generate a siphon force (eg, negative pressure).

In the drainage system 100 of the present embodiment, the liquid is first discharged from the plumbing fixture 110 from the height difference H1 between the outflow port of the plumbing fixture 110 and the lateral pipe 130a of the siphon drain pipe 130 . The liquid (for example, water) that has flowed out of the plumbing fixture 110 flows into the storage tank 1 through the fixture drain pipe 120 due to the weight of the liquid (falling pushing pressure). The storage tank 1 stores a part of the liquid inside and allows the rest of the liquid to flow out to the siphon drain pipe 130 .

In this example, the siphon drain pipe 130 forms a siphon drain channel that generates a suction force due to the siphon force. In the siphon drain pipe 130, the siphon force generated in the siphon drain pipe 130 can facilitate the drainage of liquid from the siphon drain pipe 130. FIG.

In the siphon drainage channel of this example, the drop pressure of the drainage from the water-related equipment 110 due to the height difference H1 between the outflow port of the water-related equipment 110 and the horizontal pipe 130a of the siphon drainage pipe 130 causes the water-related equipment drainage pipe 120 and The horizontal pipe 130a of the siphon drain pipe 130 is filled with water, and the vertical pipe 130b (hanging length H2) of the siphon drain pipe 130 is filled with water. 130b starts to fall, and the horizontal draw pipe 130a of the siphon drain pipe 130 is filled with water, thereby generating a siphon action. Using this siphon action as drainage power, a high-speed flow generated in the siphon drainage channel drains water from the plumbing equipment 110 , and the drainage is smoothly and quickly discharged into the pipe joint 140 .

In this example, since the siphon drainage system is adopted as the drainage system 100, the inside of the drainage pipe is filled with water to become a full-flow drainage. If a siphon drainage system is adopted as the drainage system 100 in this way, liquid drainage becomes full-flow drainage, so that it is possible to prevent solid matter from adhering to the inside of the pipe and to use a small-diameter pipe. In addition, in this example, since the siphon drainage system is adopted as the drainage system 100, the drainage pipe can be arranged with no slope. If a siphon drainage system is adopted as the drainage system 100 in this way, the drainage pipe can be arranged without a slope, and the height of the space under the floor where the drainage pipe is arranged can be reduced. In addition, in this example, since a siphon drainage system is adopted as the drainage system 100, the extended distance from the drainage source (for example, various plumbing fixtures 110) to the vertical pipe 150 (for example, from the outlet of the plumbing fixture 110 to the siphon The horizontal length L) of the drain pipe 130 to the vertical pipe 130b can be lengthened (see FIG. 1), thereby increasing the degree of freedom in room layout.

By the way, in the drainage system 100 adopting the siphon drainage system, it is assumed that a large amount of liquid is drained from the plumbing equipment 110 at once, and the drain pipe of the present invention is provided between the instrument drainage pipe 120 and the siphon drainage pipe 130. A reservoir 1 according to one embodiment is provided. The storage tank 1 can temporarily store a large amount of water drained from the plumbing equipment 110 at one time until the promotion of drainage (generation of siphon force) is started.

[An example of a storage tank that can be employed in the method for installing a storage tank according to the present invention]
FIG. 2 is a storage tank 1A as an example of a storage tank that can be employed in the installation method of the storage tank according to the present invention, and is a perspective view showing the inflow side of the storage tank 1A from above. FIG. 3 is a perspective view showing the outflow side of the storage tank 1A of FIG. 2 from above. The storage tank 1A has an inflow port A1 into which liquid flows and an outflow port A2 into which the liquid flows out, and can store therein the liquid that has flowed in from the inflow port A1.

FIG. 4 is a front view showing the storage tank 1A from the inflow side. FIG. 5 is a rear view showing the storage tank 1A from the outflow side. As shown in FIG. 5, the storage tank 1A includes a bottom wall 11, a peripheral wall 12 standing against the bottom surface, and two partition walls 13 standing against the bottom surface. In this example, the storage tank 1A has a top wall 14. As shown in FIG. The ceiling wall 14 is connected to the upper end of the peripheral wall 12 . Thus, in this example, a space defined by the bottom wall 11, the peripheral wall 12, and the top wall 14 is formed inside the storage tank 1A. In this example, the peripheral wall 12 is formed with a vent H12. The vent H12 communicates the internal space of the storage tank 1A with the outside world. This prevents the inside of the storage tank 1A from becoming negative pressure.

FIG. 6 is a plan view showing the storage tank 1A from above. FIG. 7 is a bottom view showing the storage tank 1A from below. As shown in FIG. 7, in the storage tank 1A, the peripheral wall 12 includes an inlet portion 12a having an inlet A1 and an outlet facing the inlet portion 12a and having an outlet A2. and a portion 12b. In this example, the peripheral wall 12 includes an inlet portion 12a, an outlet portion 12b, an inlet-side adjacent portion 12c adjacent to the inlet portion 12a, an outlet-side adjacent portion 12d adjacent to the outlet portion 12b, and side portions. 12e. Further, in this example, the peripheral wall 12 includes an inflow-side corner portion 12f that connects the inflow-side adjacent portion 12c and the side portion 12e, and an outflow-side corner portion 12g that connects the side portion 12e and the outflow-side adjacent portion 12d. there is

As shown in FIG. 7, the bottom wall 11 is partitioned by the peripheral wall 12 in the storage tank 1A. As shown in FIG. 6 , the ceiling wall 14 is also partitioned by the peripheral wall 12 like the bottom wall 11 . In this example, the ceiling wall 14 has two openings A3. The opening A3 communicates the internal space of the storage tank 1A with the outside world. Further, in this example, the peripheral wall 12 has recesses 12h on the top wall 14 side at the respective positions of the inflow-side corner portion 12f and the outflow-side corner portion 12g.

FIG. 8 is a cross-sectional view taken along line AA of FIG. FIG. 8 is the maximum cross section of the storage tank 1A. 9 is a cross-sectional view taken along the line BB of FIG. 4. FIG. FIG. 9 is a cross section passing through the center Oa of the inlet A1. FIG. 10 is a cross-sectional view taken along line CC of FIG. FIG. 10 is a cross section passing through the center Ob of the outlet A2. As shown in FIG. 8 and the like, the storage tank 1A is arranged at each position on the left and right sides of the liquid channel R1 extending between the inlet A1 and the outlet A2. and a liquid retention space R2. In the storage tank 1A, the liquid flow path R1 connects the inflow port A1 and the outflow port A2, and guides the liquid flowing in from the inflow port A1 to the outflow port A2. The liquid flow path R1 can be curved in a plan view or can extend in a zigzag shape. In this embodiment, the liquid flow path R1 extends linearly as shown in FIGS. As a result, the liquid channel R1 becomes the shortest route as a liquid channel connecting the inlet A1 and the outlet A2.

On the other hand, as shown in FIG. 8 and the like, the two liquid retention spaces R2 are arranged at respective positions on the left and right sides of the liquid flow path R1 and adjacent to the liquid flow path R1. Each of the two liquid retention spaces R2 can retain the liquid that has flowed in from the inlet A1.

Further, as shown in FIG. 8 and the like, in the storage tank 1A, the inlet portion 12a of the peripheral wall 12 is recessed toward the outflow side from the inlet portion 12c adjacent to the inlet portion 12a. In this example, as shown in FIG. 8 and the like, the inflow-side adjacent portion 12c of the peripheral wall 12 is connected to the inflow port portion 12a through two inflow-side corner portions 12j and 12i.

In addition, in the storage tank 1A, the outflow port portion 12b of the peripheral wall 12 protrudes further to the outflow side than the outflow side adjacent portion 12d. In this example, as shown in FIG. 7 and the like, the outflow side adjacent portion 12d of the peripheral wall 12 is connected to the outflow port portion 12b.

FIG. 11 is a right side view showing the right side of the storage tank 1A. FIG. 12 is a left side view showing the left side of the storage tank 1A. As shown in FIG. 11 and the like, in the storage tank 1A, the inflow port A1 is positioned below the peripheral wall 12 except for the inflow port portion 12a and the outflow port portion 12b of the peripheral wall 12. As shown in FIG. The outflow port A2 is also positioned below the peripheral wall 12 except for the inflow port portion 12a and the outflow port portion 12b of the peripheral wall 12, similarly to the inflow port A1.

13 is a cross-sectional view taken along line DD of FIG. 6. FIG. FIG. 13 is a cross section that bisects the storage tank 1A. FIG. 13 shows the internal structure of the liquid channel R1 and the liquid retention space R2 inside the storage tank 1A. FIG. 14 is a cross-sectional view taken along line EE of FIG. FIG. 14 shows the internal structure of the liquid retention space R2 inside the storage tank 1A. As shown in FIG. 13, in the storage tank 1A, the inflow port A1 is composed of an inflow path P1 formed in the inflow port portion 12a of the peripheral wall 12. As shown in FIG. The outflow port A2 is composed of an outflow path P2 formed in the outflow port portion 12b of the peripheral wall 12. As shown in FIG. In the storage tank 1A, the liquid flow path R1 includes an inner surface 12fa of the inlet portion 12a of the peripheral wall 12, an inner surface (bottom surface) 11fa of the lower portion 11a of the bottom wall 11, and a flow path of the peripheral wall 12. It is composed of an inner surface 12fb of the outlet portion 12b, an inflow passage P1, and an outflow port A2. In the storage tank 1A, as shown in FIG. 13, the bottom surface F1 of the liquid flow path R1 is a flat surface. In this example, the bottom surface F1 of the liquid flow path R1 is the lowest end of the inner surface 12fa of the inlet portion 12a of the peripheral wall 12 (the lowermost extension of the inlet portion 12a extending in the liquid flow direction). end) 12fa1, the lowest end of the inner surface 11fa of the inner surface 11fa of the lower portion 11a of the bottom wall 11 (the lowest extended end extending in the liquid flow direction of the lower portion 11a) 12fa1, The inner surface 12fb of the outlet portion 12b of the peripheral wall 12 includes a lowermost end 12fb1 of the inner surface 12fb (lowermost extending end of the outlet portion 12b extending in the liquid flow direction). .

In FIG. 13, reference numeral 12fp1 denotes the lowest end of the inflow path P1 (the lowest extended end of the inflow path P1 extending in the liquid flow direction). Reference numeral 12fp2 denotes the lowermost end of the outflow passage P2 formed in the outflow port portion 12b (the lowermost extension end of the outflow passage P2 extending in the liquid flow direction). As shown in FIG. 13 and the like, in the storage tank 1A, the lowest end (bottom surface) 11fa1 of the lower portion 11a of the bottom wall 11 is inclined downward toward the downstream, and the outflow port A2 is located closer to the inflow port A1 than the inflow port A1. is also located at a lower position. In this example embodiment, the bottom surface 11fa1 of the bottom surface F1 of the liquid flow path R1 is positioned with respect to the horizontal axis (in FIG. 13, the horizontal surface is indicated by a straight line Ox that appears when the liquid flow path R1 is viewed in the horizontal direction). is inclined at an angle θ11a. The angle θ11a can be appropriately set according to the content, size, etc. of the storage tank 1 . The angle θ11a can be, for example, an angle of 0.5° to 5°. When the angle θ11a is 0.5° or more, the liquid flowing from the inlet A1 can effectively flow to the inlet A1 through the liquid flow path R1. Further, when the angle θ11a is 5° or less, the inclination is not too steep, so that the liquid flowing through the liquid flow path R1 to the outlet A2 can be efficiently discharged from the outlet A2.

On the other hand, as shown in FIG. 8 and the like, the two liquid retention spaces R2 are, in plan view, the peripheral wall 12 excluding the inlet portion 12a and the outlet portion 12b of the peripheral wall 12, and the liquid flow path R1. , are separated by Specifically, the two liquid retention spaces R2 are, in plan view, the inner surface 12fi of the inflow-side corner portion 12i, the inner surface 12fj of the inflow-side corner portion 12j, the inner surface 12fc of the inflow-side adjacent portion 12c, and the inflow-side corner portion 12c. It is partitioned by an inner surface 12ff of the corner portion 12f, an inner surface 12fe of the side portion 12e, an inner surface 12fg of the outflow-side corner portion 12g, an inner surface 12fd of the outflow-side adjacent portion 12d, and the liquid flow path R1. Further, the two liquid retention spaces R2 are, as shown in FIG. 14f1 and. In the storage tank 1A, as shown in FIG. 14, the bottom surface F2 of the liquid retention space R2 is a flat surface. In this example, the bottom surface F2 of the liquid retention space R2 is formed by the inner surface 11fb of the upper portion 11b of the bottom wall 11. As shown in FIG.

FIG. 15 is a perspective view showing the FF section of FIG. 6 from the inflow side. The FF cross section is a cross section of a plane including the central axes of the two openings A3 of the top wall 14. FIG. As shown in FIG. 15, a groove portion G is arranged in the liquid flow path R1. The groove G is arranged between the inlet A1 and the outlet A2. As shown in FIG. 15 and the like, in the storage tank 1A, part of the groove G is formed by the inner surface 11fa of the lower portion 11a of the bottom wall 11. As shown in FIG. In the reservoir tank 1A, the lower portion 11a of the bottom wall 11 is recessed with respect to the upper portion 11b of the bottom wall 11. As shown in FIG. In this example, the inner surface 11fa of the lower portion 11a of the bottom wall 11 is composed of the deepest surface 11fa1 and two side surfaces 11fa2. The deepest surface 11fa1 is the deepest surface (lowermost end) of the bottom wall 11 . The deepest surface 11fa1 is connected to the inner surface 11fb of the upper portion 11b of the bottom wall 11 via the side surface 11fa2. The deepest surface 11fa1 is connected to the side surface 11fa2 by a curved surface when viewed in the extending direction of the liquid flow path R1. The side surface 11fa2 is connected to the inner surface 11fb of the upper portion 11b by a curved surface as viewed in the extending direction of the liquid flow path R1.

Further, in the storage tank 1A, part of the groove G is formed by the inner surface 12fb of the outlet portion 12b of the peripheral wall 12. As shown in FIG. As shown in FIG. 11 and the like, in the storage tank 1A, the outflow port portion 12b of the peripheral wall 12 extends downward so that the outflow port A2 is positioned below the outflow side adjacent portion 12d. . As shown in FIG. 15, in this embodiment, the inner surface 12fb of the outlet portion 12b of the peripheral wall 12 includes the deepest surface 12fb1 and two side surfaces 11fb2. The deepest surface 12fb1 is connected to the side surface 12fb2 by a curved surface as viewed in the extending direction of the liquid flow path R1. The side surface 12fb2 forms the same plane as the side surface 11fa2 of the lower portion 11a of the bottom wall 11 . The deepest surface 12fb1 is the deepest surface (lowermost end) of the inner surface 12fb of the outlet portion 12b of the peripheral wall 12 . The deepest surface 12fb1 forms the same plane as the deepest surface 11fa1 of the lower portion 11a of the bottom wall 11 . Further, the deepest surface 12fb1 is connected to the inner surface 13f1 of the partition wall 13 via the side surface 12fb2. The side surface 12fb2 forms the same plane as the inner surface 13f1 of the partition wall 13 .

Further, as shown in FIG. 9 and the like, in the storage tank 1A, part of the groove G is formed by the inner surface 11fa of the inlet portion 12a of the peripheral wall 12. As shown in FIG. As shown in FIG. 11 and the like, in the storage tank 1A, the inlet portion 12a of the peripheral wall 12 extends downward so that the inlet A1 is positioned below the inlet-side adjacent portion 12c. . As shown in FIG. 9, in this example, the inner surface 12fa of the inlet portion 12a of the peripheral wall 12 is composed of the deepest surface 12fa1 and two side surfaces 11fa2. The deepest surface 12fa1 is connected to the side surface 12fa2 by a curved surface when viewed in the extending direction of the liquid flow path R1. The side surface 12fa2 forms the same plane as the side surface 11fa2 of the lower portion 11a of the bottom wall 11 . As shown in FIG. 13 and the like, the deepest surface 12fa1 is the deepest surface (lowermost end) of the inner surface 12fa of the inlet portion 12a of the peripheral wall 12 . The deepest surface 12fa1 forms the same plane as the deepest surface 11fa1 of the lower portion 11a of the bottom wall 11 . Further, as shown in FIG. 9 and the like, the deepest surface 12fa1 is connected to the inner surface 12fi of the inflow-side corner portion 12i via the side surface 12fa2.

As shown in FIG. 10 and the like, the two partition walls 13 extend toward the outflow port A2. In the storage tank 1A, it extends toward the outflow port A2 so as to secure the outflow port A2. Here, "securing the outflow port A2" means "not closing the opening of the outflow port A2".

Further, as shown in FIG. 13 , in the storage tank 1A, the partition wall 13 has a height H13 that allows the liquid to overflow from the partition wall 13 . In this example, the height H13 of the partition wall 13 is the height from the bottom surface F1 of the liquid channel R1. As a result, the liquid passing through the liquid flow path R1 can flow into the liquid retention space R2 when the head of the liquid reaches or exceeds a certain level.

Further, as shown in FIG. 13 and the like, in the storage tank 1A, the height H13 of the partition wall 13 increases toward the outflow port A2. As shown in FIG. 13 and the like, in this example, the top surface 13f2 of the partition wall 13 is a curved surface whose cross-sectional shape when viewed from the side is a convex curve toward the outflow side. As shown in FIG. 13, in this example, the curve of the top surface 13f2 of the partition wall 13 has a radius of curvature R13.

In the storage tank 1A, the partition wall 13 is configured as part of the outlet portion 12b of the peripheral wall 12. As shown in FIG. The partition wall 13 rises from a position adjacent to the groove G. FIG. 16 is a perspective view showing the GG section of FIG. 6 from the inflow side. A GG cross section is a plane cross section including the boundary between the peripheral wall 12 and the bottom wall 11 . As shown in FIG. 16 and the like, in the storage tank 1A, the inner surface 13f1 of the partition wall 13 is connected to the side surface 12fb2 of the inner surface 12fb of the outlet portion 12b of the peripheral wall 12, and is connected to the side surface 12fb2. They form the same plane. Further, in the storage tank 1A, the inner surface 12fd of the outflow side adjacent portion 12d of the peripheral wall 12 adjacent to the outflow port portion 12b of the peripheral wall 12 is connected to the top surface 13f2 of the partition wall 13, and the top surface of the partition wall 13 Forms the same plane as 13f2. Here, the term "same surface" refers to a "smoothly connected continuous surface" and includes both "flat surfaces" and "curved surfaces".

17 is a cross-sectional view taken along line GG of FIG. 6. FIG. As shown in FIG. 17, in the storage tank 1A, the edge 13e of the top surface 13f2 of the partition wall 13 is a curved surface convex toward the inside of the storage tank 1A.

Further, as shown in FIG. 14, in the storage tank 1A, the inner surface 12fd of the outflow-side adjacent portion 12d of the peripheral wall 12 is a curved surface whose cross-sectional shape when viewed from the side is a convex curve toward the outflow side. As shown in FIG. 14, in this example, the inner surface 13fd of the outflow side adjacent portion 13d has a large curvature radius Rd11 on the bottom wall 11 side. In this example, the radius of curvature Rd11 is the same as the radius of curvature R13 that forms the curve of the top surface 13f2 of the partition wall 13 . On the other hand, the curve on the top wall 14 side has a smaller radius of curvature Rd14 than the curve on the bottom wall 11 side.

As a result of diligent testing and research, the inventor of the present application has found that in a storage tank used in a siphon drainage system, when the head of liquid near the outflow port of the storage tank is rapidly increased, a large amount of liquid flows out quickly and smoothly. It has been found that the time until the siphon force is generated can be shortened. The storage tank 1A according to the present embodiment is designed by paying attention to the fact that when the head of the liquid near the outflow port A2 is rapidly increased, a large amount of liquid can be quickly and smoothly discharged.

As shown in FIG. 13 and the like, the storage tank 1A according to this example has an inlet A1 through which liquid flows in and an outlet A2 through which the liquid flows out. It is a storage tank that can be stored in The storage tank 1A includes a peripheral wall 12 standing against the bottom surface and two partition walls 13 standing against the bottom surface. , and an outlet portion 12b facing the inlet portion 12a and having an outlet A2 formed therein. The two partition walls 13 extend toward the outlet A2.

According to the storage tank 1A according to the present embodiment, by providing the partition wall 13, as shown by the arrow D1, the head of the liquid near the outlet A2 is rapidly increased while ensuring the flow of the liquid to the outlet A2. can be increased to Even if the amount of the liquid (waste water) flowing in from the inlet A1 is small, according to this example, the partition wall 13 is provided in the storage tank 1A, so that the head of the liquid in the vicinity of the outlet A2 can be quickly increased. , and as a result, siphon activation is more likely to occur. For example, even if a large amount of liquid flows in from the inlet A1, only a small amount of liquid reaches the vicinity of the outlet A2 in the first stage. Thus, even if the amount of liquid in the vicinity of the outlet A2 is small, according to this example, the partition wall 13 is provided in the storage tank 1A, so that the head of the liquid in the vicinity of the outlet A2 can be quickly increased. As a result, siphon activation is likely to occur. Therefore, according to the storage tank 1A according to the present example, a large amount of liquid can be discharged quickly and smoothly. In particular, if the storage tank 1A is used for the siphon drainage system as in this example, the time until the siphon force is generated can be shortened even when a large amount of liquid is drained.

In addition, as shown in FIG. 13, in this example, the partition wall 13 has a height H13 that allows the liquid to overflow from the partition wall 13 . In this case, when the head of the liquid near the outlet A2 reaches or exceeds a certain level, the liquid near the outlet A2 can escape from the partition wall 13 as indicated by an arrow D2 in FIG. Therefore, according to this example, the liquid flow is less likely to be obstructed near the outflow port A2, and quicker and smoother drainage becomes possible.

Further, as shown in FIG. 13, in this example, the height H13 of the partition wall 13 increases toward the outflow port A2. In this case, while increasing the head of the liquid near the outlet A2, the amount of liquid released from the partition wall 13 can be increased as the distance from the outlet A2 increases. Therefore, according to this example, it is possible to achieve a balance between shortening the time until the siphon force is generated and smooth drainage.

Further, as shown in FIG. 13, in this example, the outflow port A2 is provided at a position lower than the inflow port A1. In this case, faster and smoother drainage is possible. Therefore, according to this example, the time until the siphon force is generated can be further shortened.

Further, as shown in FIG. 16 and the like, in this example, the partition wall 13 is configured as part of the outflow port portion 12b of the peripheral wall 12, and the outflow side of the peripheral wall 12 adjacent to the outflow port portion 12b of the peripheral wall 12 is formed. An inner surface 12fd of the adjacent portion 12d is connected to the top surface 13f2 of the partition wall 13 and forms the same plane as the top surface 13f2 of the partition wall 13 . In this case, the liquid that has escaped from the partition wall 13 can further escape along the inner surface 12fd of the outflow-side adjacent portion 12d of the peripheral wall 12, as indicated by the arrow D2. Therefore, according to the present embodiment, the liquid flow is less likely to be obstructed near the outflow port A2, and quicker and smoother drainage is possible.

Further, as shown in FIG. 17, in this example, the edge portion 13e of the top surface 13f2 of the partition wall 13 is a curved surface convex toward the inside of the storage tank 1A. In this case, the liquid near the outlet A2 can escape efficiently and smoothly from the partition wall 13 along the inner surface 12fd of the outflow-side adjacent portion 12d of the peripheral wall 12, as indicated by the arrow D2. Therefore, according to this example, it is possible to efficiently perform quick and smooth drainage.

Further, as shown in FIG. 14 and the like, in this example, the inner surface 12fd of the outflow side adjacent portion 12d of the peripheral wall 12 is a curved surface whose cross-sectional shape in side view is a curved surface convex toward the outflow side. In this case, as indicated by an arrow D3, the liquid released from the partition wall 13 is further moved along the inner surface 12fd of the outflow side adjacent portion 12d of the peripheral wall 12 while causing convection (circulation) in the vertical direction (longitudinal direction). can escape. Therefore, according to this example, more rapid and smooth drainage is possible.

Particularly, as shown in FIG. 8 and the like, the storage tank 1A according to this example includes a liquid flow path R1 extending between an inflow port A1 and an outflow port A2, and liquid flow paths R1 on both sides of the liquid flow path R1. and a liquid retention space R2 arranged at the position of In this case, as indicated by arrows D1 and D2, while the liquid flows through the liquid channel R1, the rest of the liquid can be retained in the liquid retention space R2. Therefore, according to the present example, a larger amount of liquid can be stored in the liquid retention space R2 while suppressing an increase in the length of the liquid flow path R1 in the extending direction. Therefore, according to the storage tank 1A, the liquid flow is less likely to be obstructed near the outflow port A2, and it is possible to drain more liquid quickly and smoothly by a constant amount continuously. In addition, in this case, the liquid flowing from the liquid flow path R1 can convect (circulate) between the liquid flow path R1 and the liquid retention space R2 as indicated by the arrow D4. Therefore, according to this example, it is possible to quickly and smoothly drain a larger amount of liquid while suppressing an increase in the length of the liquid flow path R1 in the extending direction. Furthermore, in this case, since the liquid flowing from the liquid channel R1 convects between the liquid channel R1 and the liquid retention space R2, it becomes difficult for dirt to adhere to the inside of the storage tank 1A. As a result, the number of operations necessary for cleaning the storage tank 1A can be reduced.

Furthermore, according to this example, the liquid retention spaces R2 are arranged at respective positions on both sides of the liquid flow path R1. It is only necessary to increase the dimension (area) in the direction in which the retention space R2 extends, and the height of the liquid retention space R2, and thus the height of the storage tank 1A, can be avoided. Therefore, as in this example, for example, the storage tank 1A is configured such that the direction in which the liquid retention space R2 extends on both sides of the liquid flow path R1 is the horizontal direction, and the standing direction of the peripheral wall 12 is the vertical direction. Moreover, if it is installed on the floor slab 102 or the like, a large amount of liquid can be quickly and smoothly drained without securing a large height of the underfloor space S. Here, the "height of the storage tank 1A" is the vertical height (dimension) of the storage tank 1A. In other words, it is the height (dimension) in the standing direction of the peripheral wall 12 of the storage tank 1A.

From the above point of view, more specifically, for example, in this example, the height of the storage tank 1A can be made lower than the width of the storage tank 1A. It is 1/2 or less of the width, and more preferably, the height of the storage tank 1A is 1/3 or less of the width of the storage tank 1A. Here, the "width of the storage tank 1" means the width of the peripheral wall 12 of the storage tank 1A facing each other in a direction perpendicular to the height direction of the storage tank 1A and the extending direction of the liquid flow path R1. is the maximum width between two peripheral walls 12. That is, referring to FIG. 8, it is the width (dimension) between the outer surfaces of two peripheral walls (side walls) 12e in the storage tank 1A arranged in the vertical direction of the drawing.

Further, as shown in FIG. 8 and the like, in the storage tank 1A, the inflow port portion 12a of the peripheral wall 12 is recessed toward the outflow side than the inflow-side adjacent portion 12c of the peripheral wall 12 adjacent to the inflow port portion 12a. In this case, the liquid flowing in the storage tank 1A tends to return in the outflow direction of the liquid. Therefore, the water can be drained more quickly and smoothly. In particular, in this example, the liquid retention space R2 is arranged at a position adjacent to the liquid flow path R1, so the liquid that has flowed from the liquid flow path R1 easily returns to the liquid flow path R1. That is, in this example, convection can be efficiently caused between the liquid flow path R1 and the liquid retention space R2. Therefore, according to this example, a large amount of liquid can be drained more quickly and smoothly through the liquid flow path R1. Further, in this example, it becomes more difficult for dirt to adhere to the inside of the storage tank 1A. As a result, the number of operations necessary for cleaning the storage tank 1A can be further reduced.

Moreover, as shown in FIG. In this example, the groove portion G is arranged in the liquid flow path R1. In this case, even a small amount of liquid can be quickly collected by the groove portion G. Therefore, more rapid and smooth drainage is possible. In this example, the partition wall 13 rises from a position adjacent to the groove G arranged in the liquid flow path R1. In this case, even a small amount of liquid can be quickly collected in the liquid flow path R1. Therefore, according to this example, a large amount of liquid can be drained more quickly and smoothly through the liquid flow path R1. In particular, in this case, the partition wall 13 rises from a position adjacent to the groove G arranged in the liquid flow path R1, so that the head of the liquid near the outlet A2 can be increased more quickly. Therefore, according to this example, a large amount of liquid can be drained more quickly and smoothly through the liquid flow path R1.

Further, as shown in FIG. 8 and the like, in the storage tank 1A, among the inner surfaces 12f of the peripheral wall 12, the inner surface 12f of the peripheral wall 12 that forms a corner inside the storage tank 1A in plan view has a curved contour shape in plan view. is a curved surface consisting of In this example, for example, the inner surface 12fi of the inflow-side corner portion 12i, the inner surface 12fj of the inflow-side corner portion 12j, the inner surface 12ff of the inflow-side corner portion 12f, and the inner surface 12fg of the outflow-side corner portion 12g each have a contour shape in plan view. is a curved surface. In this case, the liquid that has flowed from the liquid channel R1 can more efficiently convect between the liquid channel R1 and the liquid retention space R2. Therefore, according to this example, a large amount of liquid can be drained more smoothly, and the number of operations required for cleaning the storage tank 1A can be further reduced.

By the way, as a result of diligent testing and research, the inventors of the present application have found that in a storage tank used in a siphon drainage system, even when liquid is collected near the outflow port of the storage tank, a large amount of liquid can be quickly and smoothly discharged. It has been found that the time required for the generation of the siphon force can be shortened. The storage tank 1A according to the present embodiment is designed by paying attention to the fact that when the liquid is collected near the outflow port A2, a large amount of the liquid can be discharged quickly and smoothly.

In the storage tank 1A, the outflow port portion 12b of the peripheral wall 12 protrudes further to the outflow side than the outflow-side adjacent portion 12d of the peripheral wall 12 adjacent to the outflow port portion 12b of the peripheral wall 12 . In this case, the structure is such that the liquid can be easily collected in the vicinity of the outlet A2. Therefore, according to this example, a large amount of liquid can be discharged quickly and smoothly. In particular, if the storage tank 1A is used for the siphon drainage system as in this example, the time until the siphon force is generated can be shortened even when a large amount of liquid is drained.

18 is a cross-sectional view taken along the line HH of FIG. 6. FIG. The HH cross section is a plane cross section including the upper end of the outflow side adjacent portion 12d of the peripheral wall 12 . As shown in FIG. 18, in the storage tank 1A, the inner surface 12fb of the outlet portion 12b of the peripheral wall 12 has a racetrack-shaped cross section when viewed in the liquid flow direction. In this case, the structure is such that the liquid can be more easily collected in the vicinity of the outlet A2. In this example, the racetrack shape is a flat shape extending laterally (horizontally). Exemplary racetrack shapes include a one-sided unicentric racetrack shape with one center O1 arranged on one side, a one-sided bicentric racetrack shape with two centers O1 and O2 arranged on one side; A one-sided tricentric racetrack shape with three centers O1, O2 and O3 arranged on one side can be mentioned. Furthermore, as the one-side tricentric racetrack shape, there is a one-side tricentric racetrack shape in which three centers O1 to O3 are aligned, and one center O2 between the two centers O1 and O3 is arranged outside. One-side acute tricentric racetrack shape, and blunt tricentric racetrack shape in which one center O2 between the two centers O1 and O3 is arranged inside. In this example, the cross-sectional shape of the outflow port A2 is a shape similar to a racetrack shape with one-sided acute tricentric circles. In this example, two centers O1 and O2 sandwiching one center O2 are not aligned, and AB is a straight line. Other than that, it is a curved line.

In particular, in the storage tank 1A, as shown in FIG. 8 and the like, the inner surface 12fb of the outlet portion 12b of the peripheral wall 12 includes a curved surface that tapers toward the outlet A2. In this case, the structure is such that the liquid can be more easily collected in the vicinity of the outlet A2.

By the way, as shown in FIG. 17, in the storage tank 1A, the bottom surface F2 of the liquid retention space R2 is inclined downward toward the liquid flow path R1 when viewed in the extending direction of the liquid flow path R1. It is a plane connected to the bottom surface F1 of R1. In this case, the liquid in the liquid retention space R2 easily flows into the liquid flow path R1 along the bottom surface F2 of the liquid retention space R2. Therefore, according to this example, a large amount of liquid can be drained more smoothly through the liquid passing region R1. In this example, the bottom surface F2 of the liquid retention space R2 is inclined at an angle θ11b with respect to the horizontal axis (in FIG. 17, indicated by a straight line Oy appearing when the horizontal plane is viewed in the extending direction of the liquid flow path R1). there is The angle θ11b can be appropriately set according to the content, size, etc. of the storage tank 1 . The angle θ11b can be, for example, an angle of 0.5° to 5°. When the angle θ11b is 0.5° or more, convection of the waste water can be formed more effectively. Further, when the angle θ11b is 5° or less, the inclination does not become too steep, so even if the liquid does not completely enter the outflow port A2 and overflows, the overflowed liquid is more effectively flowed into the liquid retention space R2. be able to.

By the way, in the storage tank 1A, as shown in FIG. 17, the bottom surfaces F2 of the two liquid retention spaces R2 are inclined downward as they approach each other. In this case, if the lower ends of the bottom surfaces F2 of the two liquid retention spaces R2 are directly connected, the liquid flow path R1 can be formed as a V-groove whose groove bottom is directly connected to the two bottom surfaces F2. Alternatively, if the lower ends of the bottom surfaces F2 of the two liquid retention spaces R2 are connected via a plane, the liquid flow path R1 can also be a trapezoidal V-groove having the plane as the groove bottom. The bottom surfaces F1 of these liquid flow paths R1 are both at the same height as the bottom surfaces F2 of the two liquid retention spaces R2.

On the other hand, as shown in FIG. 13 and the like, in the storage tank 1A, the bottom surface F1 of the liquid flow path R1 is arranged at a position lower than the bottom surface F2 of the liquid retention space R2. In this case, a large amount of liquid can be collected in the liquid channel R1. Therefore, according to this example, a large amount of liquid can be drained more smoothly through the liquid flow path R1. In this example, the groove portion G is arranged in the liquid flow path R1. The lowest end 12fP2 of the outflow port A2 is arranged at a position lower than the bottom surface F2 of the liquid retention space R2.

13 to 17, etc., in this example, at least the inner surface 12f of the peripheral wall 12 in the liquid retention space R2 has a cross-sectional shape viewed in the extending direction of the peripheral wall 12 that projects outward from the inside of the storage tank 1A. is a curved surface consisting of a curve of In this case, the liquid flowing from the liquid flow path R1 further escapes along the inner surface 12fd of the outflow side adjacent portion 12d of the peripheral wall 12 while convection (circulation) occurs in the vertical direction (longitudinal direction). Therefore, according to this example, the convection between the liquid flow path R1 and the liquid retention space R2 can be performed more efficiently. Therefore, according to this example, a large amount of liquid can be drained more smoothly, and the number of operations required for cleaning the storage tank 1A can be further reduced.

In this example, as shown in FIGS. 4 and 5, in the liquid flow path R1, the outflow port A2 is at least one side of the inflow port A1 when viewed in the liquid flow direction (viewed in the extending direction of the liquid flow path R1). It is arranged so that it overlaps on a straight line with the part.

Referring to FIG. 4, specific examples of the alignment of the inlet A1 and the outlet A2 include, for example, a method of combining any of the following (1) to (3).
(1) The center Oa of the inflow port A1 and the center Ob of the outflow port 1b are aligned on the same vertical line Oz when viewed in the extending direction of the liquid passage region R1.
(2) The size of the inner diameter of the inlet A1 (the size of the radius ra of the inlet A1) and the size of the inner diameter of the outlet A2 (the size of the radius rb of the outlet A2) are adjusted.
(3) Adjust the space ΔZ in the vertical direction (in the direction of the vertical line Oz) between the center Oa of the inlet A1 and the center Ob of the outlet A2.

In this example, all of the methods (1) to (3) are used so that the outflow port A2 is aligned with at least a part of the inflow port A1 when viewed in the extending direction of the liquid flow path R1. are aligned to In particular, as shown in FIG. 4, in (2), the inner diameter of the outflow port A2 is set to be smaller than the inner diameter of the inflow port A1 in this embodiment. As a result, the amount of liquid flowing out from the outlet A2 is smaller than the amount of liquid flowing in from the inlet A1. In this example, as shown in FIG. 4, in (3), the center Oa of the inlet A1 and the center Ob of the outlet A2 are located at the lower end of the opening of the inlet A1 and inside the opening of the outlet A2. The vertical interval ΔZ is adjusted so that the upper ends overlap.

[Another example of a storage tank that can be employed in the method for installing a storage tank according to the present invention]
FIG. 19 is a perspective view of a storage layer 1B as another example of a storage tank that can be employed in the method of installing a storage tank according to the present invention, showing the inflow side of the storage tank 1B from above. . In this example, the peripheral wall 12 surrounds the liquid flow path R1 and two liquid retention spaces R2 arranged on the left and right sides of the liquid flow path R1, so that the external shape of the storage tank 1B is butterfly-shaped (H-shaped). shaping. In this example, the partition wall 13 is a wall different from the peripheral wall 12 .

[Installation method of storage tank according to one embodiment of the present invention]
FIG. 20 is a flow chart illustrating a method of installing a reservoir according to one embodiment of the present invention. Hereinafter, a method for installing a storage tank according to this embodiment will be described with reference to the flowchart of FIG. 20 .

In the storage tank installation method according to the present embodiment, first, a storage tank preparation step is performed (S1). In the storage tank preparation step, a storage tank is prepared in which liquid retention spaces are provided on both left and right sides of a liquid channel that connects an inflow port and an outflow port. As the storage tank, for example, the storage tank 1A in FIG. 2 and the storage tank 1B in FIG. 19 can be used. In this embodiment, the storage tank 1A of FIG. 2 is prepared.

Next, in the storage tank installation method according to the present embodiment, a pipe connection step is performed (S2). In the pipe connection step, a pipe is connected to one of the inflow port and the outflow port of the storage tank. In this embodiment, in the pipe connection step, the pipe is connected to the outflow port of the storage tank. FIG. 21 shows a state in which a siphon drain pipe 130 is connected as a pipe to the outflow port A2 of the storage tank 1A. In this embodiment, the siphon drain pipe 130 is connected to the outflow port A2 of the storage tank 1A via a sleeve joint (connecting sleeve member) 30. As shown in FIG.

Furthermore, in the present embodiment, in the pipe connection step, a flexible pipe having flexibility is used for the pipe, and the flexible pipe extends a certain distance L30 from either the inlet or the outlet of the storage tank. It is fixed to the base while being bent in the extending direction of the flexible tube. In this embodiment, as shown in FIG. 21, a flexible pipe is used as the siphon drain pipe 130. As shown in FIG. Also, as shown in FIG. 21, in this embodiment, the siphon drain pipe 130 is attached to the saddle band 31 fixed to the base. Thereby, the siphon drain pipe 130 can be fixed to the base. Here, the "base" means the surface of an object that supports the drainage system 100, and includes the surface of the ground (earth surface) as well as the surface of foundations such as slabs (for example, concrete slabs). The outflow port A2 of the storage tank 1A and the saddle band 31 closest to the outflow port A2 are arranged with a constant distance L30 so that the siphon drain pipe 130 extends linearly. In the present embodiment, the constant distance L30 is the length of the siphon drain pipe 130 that extends linearly in the extending direction of the siphon drain pipe 130 . As shown in FIG. 22, in this embodiment, the siphon drain pipe 130 is fixed by several (two in this example) saddle bands 31 adjacent to the outlet A2 of the storage tank 1A. Bent at a distance.

In addition, in this embodiment, the saddle band 31 is a clamp type saddle band. The saddle band 31 has a notch 31a. Thereby, the siphon drain pipe 130 can be attached to and detached from the saddle band 31 through the notch 31a. However, according to the present invention, the notch 31a of the saddle band 31 can be omitted. Also, the saddle band 31 can be fixed to the base by, for example, fastening elements such as screws and bolts, adhesives, and the like.

Referring to FIG. 20, next, in the storage tank installation method according to the present embodiment, a first fixing step is performed (S3). In the first fixing step, a height-adjustable first fixture is attached to at least one of the inflow side and the outflow side of the storage tank to first fix the storage tank to the base. In the present embodiment, the first fixture is attached in the first fixing step after the pipe connecting step. In this embodiment, the first fixture is attached to the inlet in the first fixing step. FIG. 22 shows a state in which the first fixture 10 is attached to the inlet 1A of the storage tank 1A and the first fixing to the base is performed. Here, "the inflow side of the storage tank" includes not only a portion including the inflow port of the storage tank, but also a pipe connected to the inflow port of the storage tank. In addition, the term "outflow side of the storage tank" includes not only a portion including the outflow port of the storage tank, but also a pipe connected to the outflow port of the storage tank.

In this embodiment, as described above, the inflow port 1A of the storage tank 1A protrudes toward the inflow side. Install. As shown in FIG. 6 and the like, in this embodiment, the inlet portion 12a of the storage tank 1A protrudes toward the inflow side to form an inlet A1. FIG. 23 shows an enlarged area including the first fixture 10 of FIG. In this embodiment, the first fixture 10 includes a base 10a attached to the base, two shaft members 10b standing from the base 10a, an attachment band 10c attached to the inlet portion 12a of the storage tank 1A, have. In this embodiment, the mounting band 10c is a clamp-type band. In this embodiment, the mounting band 10c has a lower band portion 10c1 and an upper band portion 10c2. The first fixture 10 is attached to the inlet portion 12a of the storage tank 1A by sandwiching the inlet portion 12a of the storage tank 1A between the lower band portion 10c1 and the upper band portion 10c2. Thereby, the first fixture 10 can be fixed to the storage tank 1A. In addition, in the present embodiment, the base 10a can be fixed to the base by, for example, fastening elements such as screws and bolts, adhesives, and the like. Thereby, the 1st fixture 10 can be fixed with respect to a base|substrate.

Referring to FIG. 20, next, in the storage tank installation method according to the present embodiment, a first height adjustment step is performed (S4). In the first height adjusting step, the height in the extending direction of the liquid channel is adjusted by adjusting the height of the first fixture.

In this embodiment, the first fixture 10 is a height-adjustable fixture. In this embodiment, the first fixture 10 has a screw height adjuster. In this embodiment, the height adjusting portion is composed of a nut member and a bolt member. Height adjustment is performed by a nut member. Specifically, the height of the nut member relative to the bolt member is adjusted by rotating the nut member clockwise or counterclockwise relative to the bolt member.

In this embodiment, the shaft member 10b is configured by a bolt member. The shaft member 10b penetrates the lower band portion 10c1 and the upper band portion 10c2 of the mounting band 10c so that the lower band portion 10c1 and the upper band portion 10c2 can move up and down along the shaft member 10b. A nut member 10d is attached to the shaft member 10b. In this embodiment, the nut member 10d includes three nut members, a first nut member 10d1, a second nut member 10d2 and a third nut member 10d3. The first nut member 10d1 functions as a height adjusting member. The first nut member 10d1 contacts the lower portion of the lower band portion 10c1 to support the inlet portion 12a of the storage tank 1A and thus the inlet port 1A from below via the lower band portion 10c1. Accordingly, by rotating the first nut member 10d1 clockwise or counterclockwise, it is possible to adjust the height on the upstream side of the liquid flow path R1 in the extending direction. The second nut member 10d2 functions as a pressing member. The second nut member 10d2 can be brought into contact with the upper portion of the upper band portion 10c2. As a result, when the second nut member 10d2 is rotated to approach the first nut member 10d1, the inlet portion 12a of the storage tank 1A, and thus the inlet 1A, is pressed downward via the upper band portion 10c2. can be done. Further, by rotating the second nut member 10d2 away from the first nut member 10d1, the upper band portion 10c2 can be separated upward from the inlet portion 12a of the storage tank 1A. In addition, the third nut member 10d3 functions as a positioning member. The third nut member 10d3 can be brought into contact with the lower portion of the first nut member 10d1. Accordingly, by rotating the third nut member 10d3 so as to approach the first nut member 10d1, the downward movement of the first nut member 10d1 can be suppressed.

According to the first fixture 10, by vertically moving the first nut member 10d1 along the shaft member 10b, the height on the upstream side of the liquid flow path R1 in the extending direction is adjusted. be able to. As a result, according to the first fixture 10, the height in the extending direction of the liquid flow path R1 can be adjusted by vertically moving the first nut member 10d1 along the shaft member 10b. As a result, according to the present embodiment, the storage tank 1A is inclined downward along the extending direction of the liquid channel R1 toward either the upstream side of the channel or the downstream side of the channel (preferably is leveled so that the liquid channel R1 of the storage tank 1A is inclined downward along the extending direction of the liquid channel R1 toward the downstream side of the channel), or the storage tank 1A is leveled to the liquid channel It can be leveled horizontally along the extending direction of R1. Here, "leveling" refers to the heights of the upstream side and the downstream side of the liquid flow path in the extending direction of the liquid flow path of the storage tank, and the heights of both the left and right sides of the liquid flow path. , to adjust to the desired height. In particular, in the present embodiment, the first nut member 10d1 can be firmly positioned in the height direction by bringing the third nut member 10d3 into contact with the first nut member 10d1. In addition, according to the first fixture 10, by bringing the second nut member 10d2 closer to the first nut member 10d1, the inflow port A1 of the storage tank 1A is inserted so as to sandwich the inflow port 1A of the storage tank 1A. A first fixture 10 can be attached. Furthermore, in the present embodiment, according to the first fixture 10, the first fixture 10 can be removed from the inlet A1 of the storage tank 1A by separating the first nut member 10d1 and the second nut member 10d2 from each other. can be done.

Referring to FIG. 20, next, in the storage tank installation method according to the present embodiment, a second fixing step is performed (S5). In the second fixing step, a height-adjustable second fixture is attached to at least one of the right and left sides of the storage tank to secondly fix the storage tank to the base. FIG. 22 shows a state in which the second fixture 20 is attached to one of the left and right sides of the storage tank 1A and the second fixing to the base is performed.

In this embodiment, in the second fixing step, the second fixture 20 is attached to the side portion 12e of the storage tank 1A. As shown in FIG. 6 and the like, in this embodiment, four projecting portions 15 are provided on the side portion 12e of the storage tank 1A. A through hole 15a is formed in each projecting portion 15 . FIG. 24 shows an enlarged area including the second fixture 20 of FIG. In this embodiment, the second fixture 20 is attached to one projecting portion 15 out of the four projecting portions 15 . In this embodiment, the second fixture 20 includes a ground plate (flange) 20a that can be grounded on the base, a shaft member 20b that stands up from the ground plate 20a, and a mounting plate 20c that is attached to the projecting portion 15 of the storage tank 1A. and have In this embodiment, the mounting plate 20c is a U-shaped plate. In this embodiment, the mounting plate 20c has a lower plate portion 20c1, an upper plate portion 20c2, and a connecting plate portion 20c3 that connects the lower plate portion 20c1 and the upper plate portion 20c2. The second fixture 20 is attached to the projecting portion 15 of the storage tank 1A by sandwiching the projecting portion 15 of the storage tank 1A between the lower plate portion 20c1 and the upper plate portion 20c2. Thereby, the second fixture 20 can be fixed to the storage tank 1A. In this embodiment, the second fixture 20 is attached only to one of the four protrusions 15, but the same position in the extending direction of the liquid flow path R1 is attached. projecting portions 15, projecting portions 15 at different positions in the extending direction of the liquid flow path R1, two projecting portions 15 on either one of the left and right sides sandwiching the liquid flow path R1, or four projecting portions All of the outlets 15 can be attached.

Furthermore, in the present embodiment, the second fixture has a ground plate that can be grounded to a base and a cover that covers the ground plate, and the second fixture is attached to the base by the cover. be done. FIG. 24 shows the ground plate 20a attached to the base by means of a cover 20e. In this embodiment, the cover 20e is a generally Z-shaped angle plate. In this embodiment, the cover 20e includes a base portion 20e1 attached to the base, a cover main body portion 20e2 arranged above the ground plate 20a, and a connecting portion 20e3 connecting the base portion 20e1 and the cover main body portion 20e2. and have In this embodiment, the cover body portion 20e2 protrudes in the direction opposite to the base portion 20e1 via the connecting portion 20e3. The ground plate 20a is attached between the cover main body 20e2 and the base by being sandwiched between the cover main body 20e2 and the base. The base 20e1 can be fixed to the base by, for example, fastening elements such as screws and bolts, adhesives, and the like. Thereby, the second fixture 20 can be fixed to the base. In particular, in the present embodiment, a notch portion 20e4 is formed in the cover body portion 20e2 of the cover 20e. As shown in FIG. 24, the notch 20e4 allows the shaft member 20b to pass through from the side. Accordingly, even after the cover 20e is fixed to the base, the shaft member 20b can be removed from the cover 20e together with the ground plate 20a.

Referring to FIG. 20, next, in the storage tank installation method according to the present embodiment, a second height adjustment step is performed (S6). In the second height adjustment step, the horizontal height of the storage tank is adjusted by adjusting the height of the second fixture.

In this embodiment, the second fixture 20 is a height-adjustable fixture. In this embodiment, the second fixture 20 has a screw height adjuster. In this embodiment, the height adjusting portion is composed of a nut member and a bolt member. Height adjustment is performed by a nut member. Specifically, the height of the nut member relative to the bolt member is adjusted by rotating the nut member clockwise or counterclockwise relative to the bolt member.

In this embodiment, the shaft member 20b is configured by a bolt member. The shaft member 20b includes the lower plate portion 20c1 and the upper plate portion 20c2 of the mounting plate 20c together with the through hole 15a of the projecting portion 15 so that the lower plate portion 20c1 and the upper plate portion 20c2 of the mounting plate 20c can be vertically moved along the shaft member 20b. It penetrates through the upper plate portion 20c2. A nut member 20d is attached to the shaft member 20b. In this embodiment, the nut member 20d includes two nut members, a first nut member 20d1 and a second nut member 20d2. The first nut member 20d1 functions as a height adjusting member. The first nut member 20d1 supports the projecting portion 15 of the storage tank 1A from below via the lower plate portion 20c1 by coming into contact with the lower portion of the lower plate portion 20c1 of the mounting plate 20c. As a result, if the first nut member 20d1 is rotated clockwise or counterclockwise, one of the lateral heights of the storage tank 1A (in this example, when viewed from the inlet side) left) can be adjusted. The second nut member 20d2 functions as a pressing member. The second nut member 20d2 can be brought into contact with the upper portion of the upper plate portion 20c2 of the mounting plate 20c. As a result, when the second nut member 20d2 is rotated to approach the first nut member 20d1, the projecting portion 15 of the storage tank 1A can be pressed downward via the upper plate portion 20c2 of the mounting plate 20c. can. Further, by rotating the second nut member 20d2 away from the first nut member 20d1, the upper plate portion 20c2 of the mounting plate 20c can be separated upward from the projecting portion 15 of the storage tank 1A.

According to the second fixture 20, by vertically moving the first nut member 20d1 along the shaft member 20b, one of the horizontal heights of the storage tank 1A is adjusted. can do. As a result, according to the second fixture 20, by moving the first nut member 20d1 up and down along the shaft member 20b, it is possible to adjust the height on both the left and right sides of the liquid flow path R1. As a result, according to the present embodiment, the storage tank 1A is horizontally leveled along the left-right direction, or the storage tank 1A is leveled along the left-right direction across the liquid flow path R1 in either one of the left-right directions. It can be leveled so that it slopes downwards towards the Further, according to the second fixture 20, by bringing the second nut member 20d2 closer to the first nut member 20d1, the overhanging portion of the storage tank 1A is held so as to sandwich the overhanging portion 15 of the storage tank 1A. A second fixture 20 can be attached to 15 . Furthermore, in the present embodiment, according to the second fixture 20, the second fixture 20 is removed from the projecting portion 15 of the storage tank 1A by separating the first nut member 20d1 and the second nut member 20d2 from each other. be able to.

In addition, in the present embodiment, the nut member 20d can include a third nut member 20d3 (not shown) similar to the third nut member 10d3 of the first fixture . The third nut member 20d3 functions as a positioning member, like the third nut member 10d3 of the first fixture 10. As shown in FIG. The third nut member 20d3 can be brought into contact with the lower portion of the first nut member 20d1. In this case, similar to the third nut member 10d3 of the first fixture 10, the downward movement of the first nut member 20d1 can be suppressed by rotating the third nut member 20d3 so as to approach the first nut member 20d1. can be done. Accordingly, by bringing the third nut member 20d3 into contact with the first nut member 20d1, the first nut member 20d1 can be firmly positioned in the height direction in the same manner as the third nut member 10d3 of the first fixture 10. can.

In the case of a storage tank such as the storage tank 1A in which liquid retention spaces R2 are provided on both sides of the liquid flow path R1, the four corners of the storage tank are fixed, and then the height is adjusted at each of the four corners. can be considered. However, after fixing the four corners of the storage tank, adjusting the height at each of the four corners is a complicated task. In addition, in the case of a storage tank having liquid retention spaces R2 on both sides of the liquid flow path R1, it is easy to rotate around the liquid flow path R1. The balance is bad, and as a result, it becomes a complicated work.

In contrast, according to the storage tank installation method according to the present embodiment, the liquid retention space R2 is provided on both the left and right sides of the liquid flow path R1 connecting the inflow port A1 and the outflow port A2 as described above. Using the storage tank 1A, after fixing at least one of the inlet A1 side and the outlet A2 side of the storage tank 1A to the base, the height of the fixed part is adjusted, and then the storage tank 1A is fixed. After fixing at least one of the left and right sides to the base, the level of the storage tank 1A is performed by adjusting the height of the fixed portion. Thereby, after fixing the four corners of the storage tank 1A, it is not necessary to adjust the height at each of the four corners. Further, according to the present embodiment, after the extending direction of the liquid channel R1 is fixed first, the height of at least one of the upstream side and the downstream side of the liquid channel R1 is adjusted. Fixing and height adjustment of the reservoir can be performed in a state of physical balance. Therefore, according to the method for installing the storage tank according to the present embodiment, leveling is facilitated when installing the storage tank.

Further, according to the storage tank installation method of the present invention, it is preferable to use the upper surface of the top plate of the storage tank as an index surface for the bottom surface of the liquid channel when performing the height adjustment.

If the upper surface of the top plate of the storage tank is used as an index surface for the bottom surface of the liquid channel, the bottom surface F1 of the liquid channel R1 and the bottom surface F2 of the liquid retention space R2 can be measured without removing the top plate of the storage tank. The height can be adjusted while considering the layout. Therefore, in this case, leveling when installing the storage tank 1A can be performed more easily. In particular, referring to FIG. 13, in this embodiment, when the upper surface 14f2 of the top wall 14 of the storage tank 1A is arranged horizontally, the bottom surface 11fa1 of the bottom surface F1 of the liquid flow path R1 is inclined at an angle θ11a. there is Therefore, by using the upper surface 14f2 of the ceiling wall 14 of the storage tank 1A as an index surface, it is possible to easily adjust the height in the extending direction of the liquid flow path R1 without directly checking the liquid flow path R1. . Therefore, in this case, leveling in the extending direction of the liquid flow path R1 can be performed more easily when installing the storage tank 1A. Specifically, as shown in FIG. 21 and the like, by simply placing the level SL on the upper surface 14f2 of the ceiling wall 14 of the storage tank 1A and adjusting the height, the liquid can be The inclination of the flow path R1 can be determined.

Further, the method for installing a storage tank according to the present invention includes a pipe connection step of connecting a pipe to one of the inlet and the outlet, and after the pipe connection step, in the first fixing step, the flow Preferably, the first fixture is attached to the other of the inlet or the outlet. If a pipe is connected to either the inlet or the outlet of the storage tank in advance before fixing the storage tank, the positioning of the storage tank can be easily performed. In this embodiment, as shown in FIG. 21 and the like, a siphon drain pipe 130 is connected to the outflow port A2 of the storage tank 1A in advance before fixing the storage tank 1A. In this case, leveling when installing the storage tank can be performed more easily. According to the present invention, it is also possible to connect the instrument drain pipe 120 to the inlet A1 of the storage tank 1A in advance before fixing the storage tank 1A.

In particular, in the method for installing the storage tank according to the present embodiment, in the pipe connection step, the pipe (siphon drain pipe 130) is connected to the outflow port A2, and in the first fixing step, the first fixture 10 is connected to the outlet port A2. Attach to entrance A1. The outlet A2 of the storage tank 1A is generally positioned lower than the inlet A1 as described above. Therefore, if a pipe is connected to the outflow port A2 of the storage tank 1A before fixing the storage tank 1A, the piping can be easily connected while the storage tank 1A is relatively stable with respect to the base. can. Therefore, if the siphon drain pipe 130 is connected to the outflow port A2 of the storage tank 1A in advance before fixing the storage tank 1A as in the present embodiment, leveling when installing the storage tank 1A can be made easier. It can be carried out.

Further, in the method of installing the storage tank according to the present embodiment, the inlet A1 of the storage tank 1A protrudes toward the inflow side, and in the first fixing step, the first fixture 10 is attached to the inlet of the storage tank 1A. Attach so that A1 is sandwiched. If the inflow port A1 of the storage tank 1A protrudes toward the inflow side and the first fixture 10 is attached so as to sandwich the inflow port 1A, the first fixture 10 can be easily attached to the storage tank 1A. . Therefore, in this case, leveling when installing the storage tank 1A can be performed more easily.

Further, in the storage tank installation method according to the present invention, a flexible tube having flexibility is used for the piping, and the flexible tube is placed at a certain distance from either the inlet or the outlet. It is preferably fixed to the base while being bent in the extending direction of the pipe. In this case, even if the connection of the storage tank is such that it receives repulsion by bending the pipe, the pipe is fixed to the base in a bent state at a position closer to either the inlet or the outlet. be able to. In the method for installing the storage tank according to the present embodiment, in the pipe connection step, a flexible pipe having flexibility is used as the siphon drain pipe 130, and the siphon drain pipe 130 is placed at a certain distance L30 from the outflow port A2. It is fixed to the base while being bent in the extending direction of the siphon drain pipe 130 . In this case, even if the connection of the storage tank 1A is such that the siphon drain pipe 130 is repulsed by bending the siphon drain pipe 130, the siphon drain pipe 130 should be fixed to the base in a bent state at a position closer to the outflow port A2. can be done. The fixed distance can be appropriately set according to, for example, the storage tank, the pipe (flexible pipe) connected to the storage tank, and the like. As a specific example, in order to reduce the reaction force of the piping, a saddle band can be fixed at a position 300 mm on the extension line of the outflow port A2.

Further, in the storage tank installation method according to the present embodiment, the second fixture 20 has a ground plate 20a that can be grounded to the base and a cover 20e that covers the ground plate 20a. 20 is attached to the base by cover 20e. If the grounding plate 20a of the second fixing member 20 is not attached to the base and the grounding plate 20a is grounded to the base, it is assumed that the second fixing member 20 is lifted from the base. This floating may occur, for example, when the liquid from the liquid channel R1 flows into the liquid retention space R2. On the other hand, if the grounding plate 20a of the second fixture 20 is covered with the cover 20e and the cover 20e is attached to the base as in the present embodiment, the grounding plate 20a of the second fixture 20 is not attached to the base. Even when the grounding plate 20a is grounded to the base, the second fixture 20 does not rise from the base. Therefore, in this case, it is possible to prevent the second fixture 20 from floating without attaching the grounding plate 20a of the second fixture 20 to the base. In this embodiment, the height of the second fixture 20 is adjusted by the nut member 20d. The height adjustment is performed by screwing the shaft member 20b to the overhanging portion 15 as a bolt member. It is also possible to realize by adopting the configuration. In this case, if the grounding plate 20a is covered with the cover 20e as in this embodiment, the height can be adjusted by rotating the shaft member 20b passing through the cover 20e.

The foregoing describes exemplary embodiments of the invention and various changes can be made without departing from the scope of the claims. For example, the first fixture 10 can be attached to the inflow port A1 or the outflow port A2 of the storage tank 1A, or can be attached to a pipe connected to the inflow port A1 or the outflow port A2. Moreover, the first fixture 10 is not limited to one that is attached by pinching. In this case, for example, the first fixture 10 can be attached to any portion along the liquid flow path R1 of the storage tank 1A. The second fixture 20 can also be attached to the projecting portion 15, or can be attached to either one of the right and left portions of the storage tank 1A with the liquid flow path R1 interposed therebetween. In this case, for example, it can be attached to at least one of the four corners of the storage tank 1A. Moreover, the configuration of the drainage system 100 is not limited to the configuration of the present embodiment. For example, the instrument drain pipe 120 and the siphon drain pipe 130 have been described as drainage pipes in which the upstream portion (horizontal pipe) and the downstream portion (vertical pipe) are integrated, but the upstream portion (horizontal pipe) and the downstream portion (vertical pipe) are separate drain pipes, and by connecting these drain pipes to each other, the instrument drain pipe 120 or the siphon drain pipe 130 can be formed.

1A: Reservoir, 1B: Reservoir, A1: Inlet, P1: Inlet, A2: Outlet, P2: Outlet, 1c: Vent, 11: Bottom wall, 11a: Lower portion of bottom wall, 11fa : inner surface of lower part of bottom wall 11fa1: deepest surface of lower part of bottom wall 11fa2: side surface of lower part of bottom wall 11b: upper part of bottom wall 11fb: inner surface of upper part of bottom wall 12: peripheral wall 12a: inlet portion of peripheral wall 12fa: inner surface of inlet portion of peripheral wall 12fa1: deepest surface of inner surface of inlet portion of peripheral wall 12fa2: side surface of inner surface of inlet portion of peripheral wall 12b: Outlet portion of peripheral wall 12fb: inner surface of outlet portion of peripheral wall 12fb1: deepest inner surface of outlet portion of peripheral wall 12fb2: side surface of outlet portion of peripheral wall 12c: inlet adjacent portion of peripheral wall 12fc: inner surface of peripheral wall adjacent to inlet 12d: peripheral wall adjacent to outlet 12fd: inner surface of peripheral wall adjacent to outlet 12e: side portion of peripheral wall 12fe: inner surface of peripheral wall side portion 12f: peripheral wall 12ff: inner surface of the inflow-side corner of the peripheral wall, 12i: inflow-side corner of the peripheral wall, 12fi: inner surface of the inflow-side corner of the peripheral wall, 12j: inflow-side corner of the peripheral wall, 12fj: of the peripheral wall Inner surface of inflow-side corner 12g: Outflow-side corner of peripheral wall 12fg: Inner surface of outflow-side corner of peripheral wall 13: Partition wall 13f1: Side surface of partition wall 13f2: Top surface of partition wall 13e: Partition 10: first fixture 10a: base 10b: shaft member 10c: mounting band 10c1: lower band portion 10c2: upper band portion 10d: nut member 10d1: First nut member 10d2: Second nut member 10d3: Third nut member 20: Second fixture 20a: Ground plate 20b: Shaft member 20c: Mounting plate 20c1: Lower plate portion 20c2: upper plate portion, 20c3: connecting plate portion, 20d: nut member, 20d1: first nut member, 20d2: second nut member, 20d3: third nut member, 20e: cover, 20e1: base portion, 20e2: cover body Part 20e3: Connection Part 20e4: Notch Part 31: Saddle Band , 31a: notch of saddle band, R1: liquid channel, G: groove, F1: bottom of liquid channel, R2: liquid retention space, F2: bottom of liquid retention space, SL: level, 100: drainage system , 101: Floor member, 102: Floor slab, 110: Plumbing equipment, 120: Instrument drain pipe, 120a: Upstream portion of instrument drain pipe, 120b: Downstream portion of instrument drain pipe, 121: Drainage trap, 130: Siphon drainage pipe, 130a: Horizontal pipe of siphon drainage pipe, 130b: Vertical pipe of siphon drainage pipe, 140: Pipe joint, 150: Vertical pipe, S: Underfloor space

Claims (7)

A storage tank installation method for installing a storage tank having liquid retention spaces on both left and right sides across a liquid flow path connecting an inlet and an outlet, the storage tank comprising:
a first fixing step of attaching a height-adjustable first fixture to at least one of an inflow side and an outflow side of the storage tank to first fix the storage tank to the base;
a first height adjustment step of adjusting the height of the liquid flow path in the extending direction by adjusting the height of the first fixture;
a second fixing step of attaching a height-adjustable second fixture to at least one of the left and right sides of the storage tank to perform the second fixing of the storage tank to the base;
a second height adjustment step of adjusting the horizontal height of the storage tank by adjusting the height of the second fixture;
A method of installing a reservoir, comprising: 2. The method of installing a storage tank according to claim 1, wherein an upper surface of the top plate of the storage tank is used as an index surface for the bottom surface of the liquid channel when performing the height adjustment. further comprising a pipe connection step of connecting a pipe to one of the inflow port or the outflow port;
3. The method of installing a storage tank according to claim 1, wherein said first fixture is attached to the other of said inflow port and said outflow port in said first fixing step after said pipe connecting step. In the pipe connection step, connecting the pipe to the outlet,
4. The method of installing a storage tank according to claim 3, wherein in said first fixing step, said first fixture is attached to said inlet. 5. The storage tank installation method according to claim 4, wherein the inflow port of the storage tank protrudes toward the inflow side, and in the first fixing step, the first fixture is attached so as to sandwich the inflow port. . In the pipe connection step, a flexible pipe having flexibility is used for the pipe,
4. The storage tank according to claim 3, wherein the flexible pipe is fixed to the base while being bent in the extending direction of the flexible pipe at a certain distance from one of the inflow port and the outflow port. installation method. The second fixture has a grounding plate that can be grounded to the base and a cover that covers the grounding plate,
The method for installing a storage tank according to any one of claims 1 to 6, wherein said second fixture is attached to said base by means of said cover.

Images