Rainwater storage tank

Abstract

To provide a rainwater storage tank which is devised to store rainwater in the tank by a simple means. [Solution] The container is composed of a cylindrical container body 10A for storing rainwater and a lid 10B that closes the upper open end face 12 of the container body. The lid is provided with a plurality of through-holes 23, 25 that penetrate from its top surface (front surface) to its bottom surface (back surface), and rainwater flows through these through-holes into the container body to store it. A plurality of through-holes are provided in the circumferential direction of the lid, and are selected to be large enough not to impede the flow of rainwater. The lid is provided with circumferential grooves 22, 24, and a plurality of through-holes are provided within these grooves to facilitate rainwater collection toward the through-holes.

Description

[Technical Field]

[0001] This invention is a simple water storage tank for temporarily storing rainwater, and concerns a simple water storage tank that uses commercially available containers (tanks, buckets, etc.). [Background technology]

[0002] As rainwater storage facilities that temporarily store rainwater or allow it to infiltrate into the ground and then use it for multiple purposes, storage tanks and underground infiltration tanks are known (see, for example, Patent Documents 1 to 4). Among these known water storage tanks, those used for purposes such as drinking water must comply with the installation standards of the national and local governments, and are large-capacity, large-scale facilities. Water storage tanks used for purposes other than drinking water are also large in scale. Therefore, the techniques disclosed in the above Patent Documents 1 to 4 cannot be used as simple water storage tanks for purposes other than drinking water, such as those that can be used on home premises or in small home vegetable gardens. Rainwater storage tanks designed for use in homes and other places mainly use plastic containers (buckets) such as polyethylene tanks, and simple models are known that collect rainwater from gutters and use them for their own use (see, for example, Non-Patent Document 1). A simple type that utilizes rainwater flowing down a gutter has a water diversion hose attached to an appropriate location on the vertical gutter, and some of the rainwater that flows down the vertical bucket via this water diversion hose is collected in a storage container, and the collected rainwater is used for sprinkling water on the ground or for watering a home vegetable garden. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-105022 [Patent Document 2] Japanese Patent Application Laid-Open No. 2017-145682 [Patent Document 3] Japanese Patent Application Laid-Open No. 2011-122288 [Patent Document 4] Japanese Patent Application Publication No. 06-272291 [Non-Patent Document 1] Making a rainwater tank using a plastic bucket https: / / www.skywater.jp / wp-content / uploads / Let's_make_a_rainwater_tank.pdf Summary of the Invention [Problem to be solved by the invention]

[0004] The rainwater storage tank using a rain gutter disclosed in Non-Patent Document 1 uses a diversion hose (branch hose) to store rainwater, so it is not easy to install because it requires cutting the vertical gutter midway and connecting the diversion hose to the cut point. It is also not very user-friendly, as the installation location is limited to where the vertical bucket is attached. Even though it is a simple type, there are problems such as the need for a minimum number of mounting parts and installation work, and limitations on the installation location. Therefore, this invention proposes a simple water storage tank that can be used for rainwater collection, requiring no installation work, by simply installing the container (tank) alone. [Means for solving the problem]

[0005] The rainwater storage tank described in claim 1 comprises a cylindrical container body for storing rainwater and a lid body that closes the upper open end face of the container body, and the lid body is provided with a plurality of through holes that penetrate from its front surface to its back surface, and rainwater flows into the container body through these multiple through holes so that the rainwater is stored. The rainwater storage tank according to claim 2 is characterized in that a plurality of through holes are drilled in the circumferential direction of the lid body and are selected to have a size (inner diameter) that does not obstruct the flow of rainwater. The rainwater storage tank according to claim 3 is characterized in that the cover is provided with a circumferential groove, and a plurality of through holes are drilled in this groove. [Effects of the Invention]

[0006] The lid that closes the container body has multiple through holes, so that rainwater that falls on the top surface of the lid collects in the grooves in the lid, and some of the collected rainwater flows down into the body through the through holes. The amount of rainwater that flows down is determined by the diameter and number of through holes and the amount of rain, and eventually the container body is filled with rainwater. The holes are selected to be large enough not to obstruct the flow of rainwater, but to prevent mud, sand, fallen leaves, etc. from getting in and to prevent puddles from forming, so that mosquito larvae (wriggle larvae) do not develop. Although it takes time, once the required number of days of rain has passed, the amount of rain (amount of water stored) will eventually be sufficient for watering, etc. The water storage tank of this invention can be installed anywhere you like, without being limited to under the eaves, and can store rainwater, so it can be used as a storage container without any hassle or time. The lid blocks sand, mud, dust, etc., and by appropriately selecting the diameter of the perforations (by making them small to a certain extent), the breeding of mosquito larvae can be prevented. This invention provides a simple, inexpensive, and hygienic rainwater storage tank. The container itself can be installed anywhere. Dirt and mud can be easily removed by simply washing the lid, so the tank is always hygienic. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a cross-sectional view of a main part of an example of a rainwater storage tank according to the present invention. [Figure 2] FIG. 2 is a plan view showing an example of a lid body. [Figure 3] 1. FIG. 4 is a partial cross-sectional view of a main part showing another example of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0008] Next, an embodiment of the rainwater storage tank according to the present invention will be described with reference to the drawings. [Example]

[0009] Figure 1 shows an example of a rainwater storage tank 10 according to this invention. This storage tank 10 is composed of a cylindrical, bucket-shaped container body (tank body) 10A and a lid 10B that closes the upper open end face 12 of the container body. The container body 10A is a molded product made of polyethylene resin, polypropylene resin, or the like, a so-called plastic container, and in this example, a commercially available plastic container is used. Its shape may be cylindrical, square, or the like, and in this example, a cylindrical container is used. In this example, the container body 10A is a cylinder with a predetermined volume (20 to 50 liters), and a key-type (insertion-type) locking member 14 (see FIG. 2) for locking the lid body 10B is integrally molded with the body 10A on the edge side of the upper opening end face 12. In this example, four locking members 14 are provided at 90° intervals, but the number and configuration are not limited.

[0010] The lid 10B that closes the upper opening end surface 12 of the container body 10A is, in this example, a lid that has a gentle bow shape overall, as shown in Figure 2, with a handle 20 provided in its center, and in this example, one groove (inner circumferential groove) 22 that is concentric with the handle 20 as the center, and another groove (outer circumferential groove) 24 provided near the outer circumferential edge. The width and depth of grooves 22, 24 are arbitrary, but are determined almost entirely by the size of lid 10B. In the case of a normal size, inner circumferential groove 22 is about 10 cm wide and about 3 to 5 cm deep. On the other hand, outer circumferential groove 24 has the same depth and a width of about 3 to 5 cm.

[0011] As shown in Fig. 2, a plurality of through holes 23 are provided at multiple locations within the groove 22 on the inner periphery. These through holes 23 function as water guide holes (water passage holes) for guiding rainwater (shown by dashed lines in Fig. 1) into the container body 10A, and rainwater that falls from the zenith side of the lid body 10B and accumulates in the groove 22 is efficiently collected within the container body 10A via the through holes 24. For this reason, as shown in Fig. 1, the through holes 23 are drilled so as to penetrate the thickness of the lid body 10B, and in this example, a plurality of through holes 23 are drilled at 90° intervals as shown in Fig. 2. Furthermore, in the illustrated example, four through holes are drilled at 90° intervals in the circumferential direction, with three holes in one group.

[0012] Similar through holes 25 that function as water guide holes are drilled in the outer peripheral groove 24, but in this example, the number is the same as on the inner peripheral side. Instead, the through holes 25 on the outer peripheral side are drilled closer to the inner edge of the groove 24 and are slightly larger than the through holes 23 on the inner peripheral side. The through-holes 25 are also selected to be large enough not to obstruct the flow of rainwater, but also to prevent mud, sand, fallen leaves, etc. from getting into the container body 10A, and to prevent puddles from forming, which could provide a breeding ground for mosquito larvae (wriggle larvae). Although it takes time, depending on the number of rainfalls and the number of days, the container body 10A will eventually be able to store enough rainwater (amount of water stored) for watering, etc. It is also possible to provide a drain hole or a drain port for a faucet near the end face of the upper opening end face 12 in case the rain overflows the container body 10A.

[0013] The cross section of the through holes 23, 25 may be a straight hole shape, or may be made into a funnel shape with a step as shown in Figure 3, with the top side being slightly larger. By doing so, stagnation is reduced even when it rains rather heavily, and rainwater can be smoothly guided into the container body 10A. The size of the outer peripheral edge of the lid 10B is set so as to engage with the upper opening end surface 12 of the container body 10A.

[0014] Furthermore, as shown in Figure 2, in this example, four brim-shaped locking claws 30 are integrally molded on the outside of the upper opening end surface 12, and by rotating the lid body 10B and inserting the locking claws 30 into the locking members 14 provided on the container body 10A, the lid body 10B is closed to the container body 10A and enters a locked state. The collected rainwater can be immediately used for watering, etc., by simply opening the cover 10B. By appropriately selecting the configuration of the lid 10B and the size of the through holes 23, 25, the container body 10A can be immediately used for watering, etc., since it is possible to prevent unwanted matter such as mud, sand, and fallen leaves from getting mixed in. Of course, there is almost no risk of pests such as mosquito larvae growing inside.

[0015] As described above, the simplified rainwater storage tank 10 according to this invention can be constructed inexpensively using commercially available parts, and because it is extremely simple in construction, no installation work is required, and there are no restrictions on the location of the container 10. The user can simply transport it to the location where they want to use it, and set it up. The purpose can be achieved anywhere where rainwater falls. [Explanation of symbols]

[0016] 10. Rainwater storage tank 10A···Container body 10B...Lid body 12...Top opening end surface 14 Locking member 22, 24...Groove 23, 25...through holes 30····Lock claw

Claims

1. a cylindrical container body for storing rainwater; and a lid that closes the upper open end face of the container body, The lid has a plurality of through holes formed therein, the through holes extending from the front surface to the rear surface, The rainwater storage tank is characterized in that rainwater flows into the container body through the plurality of through holes and is stored therein.

2. The through holes are drilled in a plurality in the circumferential direction of the cover body and are selected to be large enough not to obstruct the flow of rainwater.

2. The rainwater storage tank according to claim 1.

3. The cover is provided with a circumferential groove, The plurality of through holes are drilled in the groove.

2. The rainwater storage tank according to claim 1.

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