JP6470138B2 - Water storage tank - Google Patents

Description

  The present invention relates to a water storage tank, and more particularly to a water storage tank in which stored water can be used for both fire prevention and drinking water.

As a water tank for fire prevention, many underground buried type tanks are employed, for example, one disclosed in Patent Document 1.
This water tank has a manhole leading to the ground, and a hose is inserted through this manhole to pump water. A concave pit is provided at a position facing the manhole on the bottom plate. By inserting the tip of the hose into this pit, the water in the water storage tank can be completely pumped.
By the way, in recent years, water storage tanks are used not only for fire prevention but also for storing drinking water when water supply from the water supply is stopped in the event of a disaster. In order to be able to use it as drinking water, a water supply is connected to the water tank, and a pipe that passes the water through the water tank and supplies water to the outside is provided. Is necessary.

JP 2000-352084 A

However, in the conventional water storage tank, since the bottom plate is provided with a concave pit, there is a possibility that water may stay in the pit, and there may be a problem in terms of hygiene when used as drinking water.
The present invention has been made paying attention to the above conventional problems, and the stored water can be used for both fire prevention and drinking water, and there is a problem in terms of hygiene when used as drinking water. The purpose is to provide a sanitary water tank that is unlikely to occur.

The present invention has been made to solve the above-mentioned problems, and the invention of claim 1 is directed to a cylindrical side wall, a bottom plate constituting the bottom of the side wall, and a top plate covering the upper surface opening of the side wall. A main body comprising: a water inlet formed in the top plate; a concave pit formed in the bottom plate; a water supply pipe for introducing water supplied from the water supply to the main body; A water pipe for sending water to the outside, and a pumping pipe for pumping the water in the main body to the outside,
The water in the main body is sent out from the water pipe, and the water in the main body is replaced by supplying water from the water supply pipe to the main body along with this,
When drinking water stored in the main body in the event of a disaster or the like, a pump is connected to the pumping pipe to pump the water in the main body to the outside,
When water stored in the main body is used as fire prevention water, a hose is inserted into the water intake, and a water storage tank that pumps water by inserting the tip of the hose into the concave pit.
The portion inserted into the main body of the water supply pipe and the water supply pipe is a straight pipe that extends straight from the top plate side toward the bottom plate, and communicates with the straight pipe so as to protrude laterally and is located near the bottom plate. A lower projecting pipe, and an intermediate projecting pipe that communicates with the straight rod and faces the same direction as the lower projecting pipe and is located at an intermediate portion in the height direction;
The lower protruding pipe and the intermediate protruding pipe are provided in the vicinity of the inner wall surface of the side wall body, and the lower protruding pipe and the intermediate protruding pipe of the water supply pipe, and the lower protruding pipe and the intermediate protruding pipe of the water supply pipe. Are arranged so as to be close to each other and line-symmetric,
The lower protruding pipe is a water storage tank having an extending portion extending in a horizontal direction along an inner wall surface of the side wall body.

  The invention according to claim 2 is the water storage tank according to claim 1, wherein the opening area of the intermediate projecting pipe is smaller than the opening area of the lower projecting pipe.

  The invention of claim 3 is the water storage tank according to claim 1 or 2, wherein an auxiliary hole is formed between the lower projecting pipe and the intermediate projecting pipe of the straight pipe. is there.

  The invention of claim 4 is the water storage tank according to claim 3, wherein a plurality of auxiliary holes are provided, and the opening area of the auxiliary hole located above is smaller than the opening area of the auxiliary hole located below. It is a water tank.

  According to a fifth aspect of the present invention, in the water storage tank according to any one of the first to fourth aspects, at least one of the lower protruding tube and the intermediate protruding tube is formed in a trumpet shape that increases in diameter toward the tip. It is a water tank characterized by.

  According to a sixth aspect of the present invention, in the water storage tank according to any one of the first to fourth aspects, at least one of the lower protruding tube and the intermediate protruding tube is formed in a nozzle shape whose diameter decreases toward the tip. It is a water tank characterized by.

  The invention according to claim 7 is the water storage tank according to any one of claims 1 to 6, wherein at least one of the lower protruding tube and the intermediate protruding tube is curved along the inner wall surface of the side wall body. It is a water tank.

  The invention of claim 8 is the water storage tank according to any one of claims 1 to 7, wherein the concave pit is formed in a mortar shape whose diameter increases as it goes upward.

  A ninth aspect of the present invention is the water storage tank according to any one of the first to eighth aspects, wherein the main body is an underground buried type in which the main body is buried in the ground.

  In the water storage tank of the present invention, the stored water can be used for both fire prevention and drinking water, and when used as drinking water, it is possible to prevent the occurrence of sanitary problems.

It is a perspective view of the water storage tank concerning Embodiment 1 of the present invention. It is AA sectional drawing of FIG. It is a top view of the water storage tank of FIG. It is CC sectional drawing of FIG. It is BB sectional drawing of FIG. It is a longitudinal cross-sectional view for demonstrating the method to take out the water stored in the water storage tank of FIG. 1 as fire prevention water. It is a longitudinal cross-sectional view for demonstrating the flow of the water stored in the water storage tank of FIG. It is a cross-sectional view for demonstrating the flow of the water stored in the water storage tank of FIG. It is a longitudinal cross-sectional view of the water storage tank which concerns on Embodiment 2 of this invention. FIG. 10 is a partially enlarged front view of a water supply pipe (water supply pipe) provided in the water storage tank of FIG. 9. It is a partial enlarged view of the water supply pipe (water supply pipe) with which the water storage tank which concerns on Embodiment 3 of this invention is equipped, (A) is a front view, (B) is a side view. It is a partial enlarged view of the water supply pipe (water supply pipe) with which the water storage tank which concerns on Embodiment 4 of this invention is equipped, (A) is a front view, (B) is a side view. It is a partially expanded perspective view of the water supply pipe (water supply pipe) with which the water storage tank which concerns on Embodiment 5 of this invention is equipped. It is a partially expanded perspective view of the water supply pipe (water supply pipe) with which the water storage tank which concerns on Embodiment 6 of this invention is equipped. It is a cross-sectional view of a water storage tank according to Embodiment 7 of the present invention.

A water tank 1 according to Embodiment 1 of the present invention will be described with reference to FIGS. The water tank 1 is of an underground type in which a main body 3 described later is embedded in the ground.
The main body 3 includes a cylindrical side wall body 5, a bottom plate 7 constituting the bottom of the side wall body 5, and a top plate 9 covering the upper surface opening of the side wall body 5.
The top plate 9 is provided with a water intake 11, and a cylinder 13 provided on the top plate 9 is connected to the water intake 11, and the upper surface opening of the cylinder 13 is exposed to the ground to form a manhole. The upper surface opening of the cylinder 13 is closed by an openable / closable lid 14 (see FIG. 3).
A concave pit 15 is provided in a portion of the bottom plate 7 facing the water intake 11. The pits 15 are formed in a mortar shape whose diameter increases from the circular bottom surface 15a toward the circular top surface opening 15b, that is, upward.

Reference numeral 17 denotes a water supply pipe. One end of the water supply pipe 17 is connected to the water supply via a pipe (not shown), and the other end is inserted into the main body 3 through the top plate 9.
Reference numeral 19 denotes a water pipe. One end of the water pipe 19 is connected to a pipe (not shown) connected to a water supply destination from the water supply, and the other end is inserted into the main body 3 through the top plate 9. Has been.
Straight pipes 17 a and 19 a that extend straight from the top plate 9 toward the bottom plate 7 are provided at portions of the water supply pipe 17 and the water supply pipe 19 that are inserted into the main body 3. Lower projecting pipes 17b and 19b are provided at the lower ends of the straight pipes 17a and 19a, respectively. The lower protruding pipes 17b and 19b communicate with the straight pipes 17a and 19a and are located in the vicinity of the bottom plate 7. The lower protruding tubes 17b and 19b are provided at a position of 30 cm to 50 cm from the upper surface of the bottom plate 7.

  The straight pipes 17a and 19a are provided with intermediate projecting pipes 17c and 19c. The intermediate projecting pipes 17c and 19c communicate with the straight pipes 17a and 19a, and are positioned in the intermediate part in the height direction above the lower projecting pipes 17b and 19b. The middle projecting tube 17c faces the same direction as the projecting tube 17b, and the middle projecting tube 19c faces the same direction as the lower projecting tube 19b.

Lower protruding tubes 17b and 19b and intermediate protruding tubes 17c and 19c are provided in the vicinity of the inner wall surface 5a of the side wall body 5. The lower protruding pipe 17b and the intermediate protruding pipe 17c of the water supply pipe 17 and the lower protruding pipe 19b and the intermediate protruding pipe 19c of the water supply pipe 19 are arranged so as to be close to each other and line-symmetric. That is, the opening of the lower protruding tube 17b and the opening of the lower protruding tube 19b face in opposite directions, and the opening of the intermediate protruding tube 17c and the opening of the intermediate protruding tube 19c also face in opposite directions.
The lower protruding tube 17 b has an extending portion 17 d that extends in the horizontal direction along the inner wall surface 5 a of the side wall body 5. Further, the lower protruding pipe 19b has an extending part 19d extending in the horizontal direction along the inner wall surface 5a of the side wall body 5.

An emergency shutoff valve 21 is attached to the water supply pipe 17 and the water supply pipe 19, and a plurality of valves 23 are further attached.
The periphery of the place where the emergency shut-off valve 21 is provided is surrounded by the case 20, and the upper surface opening formed in the case 20 is exposed from the ground G. The upper surface opening of the case 20 is closed by an openable / closable lid 22 (see FIG. 2).

Reference numerals 25 and 27 denote pumping pipes. The pumping pipes 25 and 27 penetrate the top plate 9 and enter the main body 3, and lower ends thereof extend to the vicinity of the bottom plate 7. Further, the upper end portions of the pumping pipes 25 and 27 protrude from the top plate 9. A quick exhaust valve 29 communicating with the inside of the main body 3 is provided in the vicinity of the pumping pipes 25 and 27.
The upper ends of the pumping pipes 25 and 27 and the quick exhaust valve 29 are accommodated in a cylindrical body 31 provided on the upper surface of the top plate 9, and the upper surface opening of the cylindrical body 31 is exposed from the ground G. It is closed by a possible lid 33 (see FIG. 2).

Reference numerals 35 and 37 denote water sampling inlet introduction pipes. The water sampling inlet introduction pipes 35 and 37 penetrate the top plate 9 and enter the main body 3, and their lower end portions extend to the vicinity of the bottom plate 7. Further, the upper ends of the water inlet inlet pipes 35 and 37 protrude from the top plate 9. A quick exhaust valve 39 communicating with the inside of the main body 5 is provided in the vicinity of the water inlet inlet pipes 35 and 37.
The upper ends of the water inlet inlet pipes 35 and 37 and the quick exhaust valve 39 are accommodated in a cylinder 41 provided on the upper surface of the top plate 9, and the upper surface opening of the cylinder 41 is exposed from the ground G. This upper surface opening is closed by a lid 43 that can be opened and closed.

Next, the usage method of this water tank 1 is demonstrated.
In normal life, water supplied from the water supply is introduced into the main body 3 through the water supply pipe 17. As shown by arrows in FIGS. 1 and 7, water passes through the straight pipe 17a, flows out from the intermediate projecting pipe 17c, and then flows out from the lower projecting pipe 17b.
Further, the water in the main body 3 is sent to the outside through the water supply pipe 19. As shown by arrows in FIG. 1, water flows in from the intermediate projecting tube 19c and the lower projecting tube 19b, and is sent to the outside through the straight tube 19a.

  As described above, the lower protruding pipes 17b and 19b and the intermediate protruding pipes 17c and 19c are provided in the vicinity of the inner wall surface 5a of the side wall body 5, and the lower protruding pipe 17b, the intermediate protruding pipe 17c and the water supply pipe of the water supply pipe 17 are provided. The lower projecting tube 19b and the intermediate projecting tube 19c are arranged so as to be close to each other and symmetrical with each other, and the lower projecting tube 17b extends in the horizontal direction along the inner wall surface 5a of the side wall body 5. Since the lower protruding pipe 19b has an extending part 19d extending in the horizontal direction along the inner wall surface 5a of the side wall body 5, the flow of water indicated by an arrow in FIGS. Occurs. This water flow is generated from the lower layer in the main body 3 to the entire upper layer.

  In particular, since the extending portions 17d and 19d are provided, water is discharged vigorously in a substantially horizontal direction. Thereby, the above-described water flow entrains the entire water in the main body 3. As a result, as shown in FIG. 7, the water in the pit 15 is also reliably replaced. Further, since the pit 15 is formed in a mortar shape, the water flowing into the pit 15 flows along the inner peripheral surface and flows out from the upper surface opening 15b. Therefore, the water in the pit 15 can be replaced more reliably.

A method of using the water in the main body 3 as drinking water during a disaster or the like will be described.
The lid 33 is opened, one end of the hose 45 is connected to the pumping pipe 25, the manual pump 47 is connected to the other end, and the manual pump 47 is operated. As a result, the water in the main body 3 flows out from the manual pump 47 through the pumping pipe 25 and the hose 45.
Further, one end of the hose 49 is connected to the pumping pipe 27, and the other end is connected to the suction port of the automatic pump 51. Further, a temporary water tap 53 is connected to the discharge port of the automatic pump 51. The automatic pump 51 is operated and water is supplied from the temporary water tap 53.

When the water supply pressure of water supplied from the water supply decreases during a disaster or the like, the emergency shut-off valve 21 is activated to cut off communication between the water supply pipe 17 and the water supply pipe 19 and the outside.
In addition, the water in the main body 3 is collected from the water inlet inlet pipes 35 and 37 and a water quality test is performed.

When the water stored in the main body 3 is used as fire prevention water, the lid 14 is opened to open the water intake 11, the hose 55 is inserted from the water inlet 11, and the tip of the hose 55 enters the concave pit 15. Make it. Then, water in the main body 3 is sucked and discharged by a pump (not shown) connected to the rear end portion of the hose 55. By allowing the tip of the hose 55 to enter the concave pit 15, most of the water in the main body 3 can be sucked.
Further, since the lower protruding pipe 17b and the intermediate protruding pipe 17c of the water supply pipe 17 and the lower protruding pipe 19b and the intermediate protruding pipe 19c of the water supply pipe 19 are arranged so as to be symmetrical with respect to the line, the water supply pipe 17 is connected to the water supply pipe. It is also possible to use the water supply pipe 19 as a water supply pipe. In other words, it is possible to cope with a case where the water purification plant is changed depending on the situation of the river to which water is taken and the water supply direction is changed by switching the water supply system.

9 and 10 show a water storage tank 61 according to Embodiment 2 of the present invention.
Since this water tank 61 has the same constituent parts as the water tank 1 according to the first embodiment except for the points described below, the same constituent parts are denoted by the same reference numerals used in the first embodiment. The description of the water tank 61 will be omitted, and only the points different from the water tank 1 will be described. This also applies to the third to seventh embodiments.
Auxiliary holes 63a, 63b are provided between the lower protruding pipe 17b and the intermediate protruding pipe 17c of the straight pipe 17a of the water supply pipe 17 and between the lower protruding pipe 19b and the intermediate protruding pipe 19c of the straight pipe 19a of the water supply pipe 19. , 63c, 63d, and 63e. FIG. 10 shows a straight pipe 17a (19a) having a short dimension for easy understanding on the drawing display.
The auxiliary holes 63a, 63b, 63c, 63d, and 63e are formed so that the opening area of the auxiliary hole 63a is smaller than that of the auxiliary hole 63a, 63b, 63c, 63d, and 63e.

In the water storage tank 61, water flows out from the auxiliary holes 63a, 63b, 63c, 63d, and 63e in addition to the lower protruding pipe 17b and the intermediate protruding pipe 17c. Accordingly, a water flow is generated throughout the main body 3. Thereby, the water in the main body 3 including the water in the pit 15 can be more reliably replaced.
Although the water in the straight pipe 17a (19a) flows out from the intermediate projecting pipe 17c (19c) and the auxiliary holes 63a, 63b, 63c, 63d, 63e, the flow becomes weaker as it goes to the lower end thereof, as described above. The auxiliary holes 63a, 63b, 63c, 63d, and 63e are formed so that the opening area of the auxiliary holes 63a, 63b, 63c, 63d, and 63e is smaller than that of the auxiliary holes 63a, 63b, 63c, 63d, and 63e. It is possible to make the amount and speed of the water to be almost uniform, and to generate a flow free of spots with respect to the water in the main body 3.

FIG. 11 shows a water supply pipe 17 and a water supply pipe 19 of a water storage tank according to Embodiment 3 of the present invention.
The opening area of the middle protruding tube 77c (79c) is set to be smaller than the opening area of the lower protruding tube 17b (19b).
Accordingly, the amount and speed of the water flowing out from the intermediate projecting tube 77c (79c) and the amount and speed of the water flowing out from the lower projecting tube 17b (19b) can be made substantially equal. It is possible to generate a spotless flow.

FIG. 12 shows a water supply pipe 17 and a water supply pipe 19 of a water storage tank according to Embodiment 4 of the present invention.
The middle protruding tube 87c (89c) and the lower protruding tube 87b (89b) are set to have a long dimension.
Accordingly, the water flowing out from the intermediate projecting tube 87c (89c) and the lower projecting tube 87b (89b) is guided over a longer distance in the horizontal direction, and a flow free from spots is generated with respect to the water in the main body 3.

FIG. 13 shows a water supply pipe 17 and a water supply pipe 19 of a water storage tank according to Embodiment 5 of the present invention.
The lower protruding tube 97b (99b) and the intermediate protruding tube 97c (99c) are formed in a trumpet shape that increases in diameter toward the tip.
Therefore, the water flowing out from the lower protruding tube 97b (99b) and the intermediate protruding tube 97c (99c) spreads, and the water in the main body 3 is stirred to generate a flow without spots.

FIG. 14 shows a water supply pipe 17 and a water supply pipe 19 of a water storage tank according to Embodiment 6 of the present invention.
The lower protruding tube 107b (109b) and the intermediate protruding tube 107c (109c) are formed in a nozzle shape that decreases in diameter toward the tip.
Accordingly, the flow rate of the water flowing out from the lower protruding tube 107b (109b) and the intermediate protruding tube 107c (109c) is increased, and a flow free from spots is generated with respect to the water in the main body 3.

FIG. 15 shows a water storage tank 111 according to Embodiment 7 of the present invention.
The lower protruding pipe 117 b of the water supply pipe 17 and the lower protruding pipe 119 b of the water supply pipe 19 are curved along the inner wall surface 5 a of the side wall body 5.
Therefore, the water flowing out from the lower projecting pipes 117b and 119b flows smoothly along the inner wall surface 5a, and a flow free from spots is generated with respect to the water in the main body 3.

The embodiment of the present invention has been described in detail above. However, the specific configuration is not limited to this embodiment, and the present invention can be changed even if there is a design change without departing from the gist of the present invention. included.
For example, in the above-described embodiment, an underground buried type water storage tank is shown, but the present invention is not limited to this, and can be applied to a type of water tank installed on the ground.
In the seventh embodiment, not only the configuration in which only the lower protruding tubes 117b and 119b are bent, but also a configuration in which the intermediate protruding tube is also bent, or a configuration in which only the intermediate protruding tube is bent is also possible. .
The pits are not limited to a mortar shape but may be other shapes such as a cylindrical shape.

  The water tank of the present invention has applicability in the water tank construction industry, and the stored water can be used for both fire prevention and drinking water, and when used as drinking water, it is always sanitary water. Can be provided.

DESCRIPTION OF SYMBOLS 1 ... Water tank 3 ... Main body 5 ... Side wall body 5a ... Inner wall surface of a side wall body 7 ... Bottom plate 9 ... Top plate 11 ... Water intake 13 ... Cylindrical body 14 ... Cover 15 ... Concave pit 15a ... Bottom of pit 15b ... Upper surface opening 17 ... Water supply pipe 19 ... Water supply pipe 17a, 19a ... Straight pipe 17b, 19b ... Lower protrusion pipe 17c, 19c ... Intermediate part protrusion pipe 19d ... Extension part 20 ... Case 21 ... Emergency shutoff valve 22 ... Cover 23 ... Valve 25, 27 ... pumping pipe 29 ... quick exhaust valve 31 ... cylinder 33 ... lid 35, 37 ... sampling port introduction pipe 39 ... quick exhaust valve 41 ... cylinder body 43 ... lid 45 ... hose 47 ... manual pump 49 ... hose 51 ... Automatic pump 53 ... Temporary faucet 61 ... Water tanks 63a, 63b, 63c, 63d, 63e ... Auxiliary holes 77c, 79c ... Intermediate protruding pipes 87b, 89b ... Lower protruding pipes 87c, 89c ... Intermediate protruding pipe 97 , 99b ... lower protruding tube 97c, 99c ... intermediate portion projecting tube 107 b, 109b ... lower protruding tubes 107c, 109c ... intermediate portion projecting tube 117b, 119b ... lower protruding tube G ... ground

Claims (9)

A main body comprising a cylindrical side wall body, a bottom plate constituting the bottom of the side wall body and a top plate covering the upper surface opening of the side wall body, a water intake formed in the top plate, and formed on the bottom plate A concave pit, a water supply pipe for introducing water supplied from the water supply to the main body, a water supply pipe for sending water stored in the main body to the outside, and a pumping pipe for pumping the water in the main body to the outside Have
The water in the main body is sent out from the water pipe, and the water in the main body is replaced by supplying water from the water supply pipe to the main body along with this,
When drinking water stored in the main body in the event of a disaster or the like, a pump is connected to the pumping pipe to pump the water in the main body to the outside,
When water stored in the main body is used as fire prevention water, a hose is inserted into the water intake, and a water storage tank that pumps water by inserting the tip of the hose into the concave pit.
The portion inserted into the main body of the water supply pipe and the water supply pipe is a straight pipe that extends straight from the top plate side toward the bottom plate, and communicates with the straight pipe so as to protrude laterally and is located near the bottom plate. A lower projecting pipe, and an intermediate projecting pipe that communicates with the straight rod and faces the same direction as the lower projecting pipe and is located at an intermediate portion in the height direction;
The lower protruding pipe and the intermediate protruding pipe are provided in the vicinity of the inner wall surface of the side wall body, and the lower protruding pipe and the intermediate protruding pipe of the water supply pipe, and the lower protruding pipe and the intermediate protruding pipe of the water supply pipe. Are arranged so as to be close to each other and line-symmetric,
The water storage tank, wherein the lower protruding pipe has an extending portion extending in a horizontal direction along an inner wall surface of the side wall body.   The water storage tank according to claim 1, wherein the opening area of the intermediate protruding pipe is smaller than the opening area of the lower protruding pipe.   The water storage tank according to claim 1 or 2, wherein an auxiliary hole is formed between the lower projecting pipe and the intermediate projecting pipe of the straight pipe.   4. The water storage tank according to claim 3, wherein a plurality of auxiliary holes are provided, and an opening area of the auxiliary hole located above is smaller than an opening area of the auxiliary hole located below.   5. The water storage tank according to claim 1, wherein at least one of the lower projecting pipe and the intermediate projecting pipe is formed in a trumpet shape that expands toward the tip.   5. The water storage tank according to claim 1, wherein at least one of the lower projecting pipe and the intermediate projecting pipe is formed in a nozzle shape whose diameter decreases toward the tip.   The water storage tank according to any one of claims 1 to 6, wherein at least one of the lower protruding pipe and the intermediate protruding pipe is curved along the inner wall surface of the side wall body.   The water storage tank according to any one of claims 1 to 7, wherein the concave pit is formed in a mortar shape whose diameter increases as it goes upward.   9. The water storage tank according to claim 1, wherein the water storage tank is an underground buried type in which a main body is buried in the ground.

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