JP2004285649A - Street gully - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a street gully, surely inhibiting entering and leaving of a mosquito, restraining leakage of bad smell and having no fear of breakage. <P>SOLUTION: In this street gully 11, a gully body 13 is installed in the midway of a drain pipe 18, an outer screen 15 for passing rainwater is mounted on the upper part 14 of the gully body 13, and an intermediate screen 16 for passing rainwater is disposed below the outer screen 15. The intermediate screen is composed of an intermediate partition plate 33 having an opening part 32, and a freely rotatable impeller 34 fitted to the opening part. The opening part can be closed by blades 55 of the impeller. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to rainwater that causes rainwater that collects on a street or a garden to flow down a drain pipe (a “mas” may be filled with a mas, a basin, or a trout, but is referred to as “mas” in this specification). .
[0002]
[Prior art]
Rainwater basins shall be provided at appropriate intervals to allow groundwater to flow into drains buried underground. That is, the rainwater trough is a connection between the ground and the ground.
When there is little rain in summer and there is no water flowing through the drain, some water may accumulate at the bottom of the basin. Mosquitoes lay eggs in this pooled water, causing bubbling, and mosquitoes may be generated in large quantities, and measures must be taken.
[0003]
As a countermeasure for this, it is known to provide an inner lid inside the sash to prevent the generation of mosquitoes and the scattering of offensive odors (for example, see Patent Document 1).
Further, it is known that a copper material is provided inside a mascot to prevent the generation of mosquitoes by the sterilizing action of copper (for example, see Patent Document 2).
[0004]
[Patent Document 1]
JP-A-2002-201704 (page 3, FIG. 1)
[Patent Document 2]
JP-A-2000-154589 (page 2, FIG. 1)
[0005]
The above Patent Documents 1 and 2 will be described in detail with reference to the drawings.
FIG. 8 is an explanatory view of a conventional drainage trough (a copy of FIG. 1 of Patent Document 1).
The conventional drainage muffler A has a lid 1 mounted on a main body 14 and an inner lid 3 (having inclined pieces 6 and 6) inside which can be opened, so that rainwater exceeds a certain amount. When the gravitational force exceeds a certain level, the inclined pieces 6, 6 are opened against the spring force of the winding spring 11, and when there is no rainfall, the inclined pieces 6, 6 of the inner lid 3 are closed.
[0006]
That is, since the inner lid is closed most of the time, invasion of mosquitoes from the outside can be prevented. If mosquitoes do not invade, there is no danger of swelling. Even if bubbling occurs, adult mosquitoes are confined by the inner lid 3, so that the generation of mosquitoes can be effectively prevented, and the leakage of odor can be prevented. is there.
[0007]
FIG. 9 is an explanatory diagram of a conventional mosquito-proof rainwater squid (a photograph of FIG. 1 of Patent Document 2).
In the conventional rain water basin 10, square rod-shaped guides 20, 20 are respectively mounted inside opposing inner side walls 41, 43, and the plate-shaped copper member 30 is inserted between the square rod-shaped guides 20, 20 and the inner side wall 42. However, the antibacterial effect of the plate-like copper member 30 provided at the location where water stays can kill eggs laid by mosquitoes and prevent the occurrence of mosquitoes.
[0008]
[Problems to be solved by the invention]
However, in the drainage basin A of Patent Document 1 shown in FIG. 8, when the inclined pieces 6 and 6 are opened, the mosquitoes can pass through the inner lid 3, and there is a small number of mosquitoes coming and going.
Also, in the case of drainage A, when the rainwater increases, the inner lid 3 may be damaged by the rainwater flowing backward from the drain pipe 13.
[0009]
The rainwater trough 10 of Patent Literature 2 shown in FIG. 9 described above has a risk of adversely affecting the environment because the copper ions are contained in the wastewater by the plate-like copper member 30 and the water quality changes.
[0010]
Therefore, an object of the present invention is to provide a rainwater basin that more reliably suppresses the entrance and exit of mosquitoes, suppresses odor leakage, and is free from damage.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, a main body is installed in the middle of a drain pipe or a drain, and an outer screen for passing rainwater is attached to an upper portion of the main body, and a middle screen for passing rainwater below the outer screen. In the rainwater basin where the rainwater is arranged, the middle screen is composed of a partition plate having an opening, and a rotatable impeller mounted on the opening, so that the opening can be closed by the blade of the impeller. It is characterized by comprising.
[0012]
Since the opening of the middle screen is closed by the blades of the impeller, the middle screen can prevent mosquito invasion and more surely prevent mosquito ingress and egress. At the same time, since the opening of the middle screen is closed by the impeller blades, the middle screen stops the upward flow of offensive odor generated from the polluted water at the bottom of the rainwater basin.
[0013]
Water may flow backward through drains due to heavy rains and this water may go to the ground. At this time, the impeller rotates to substantially open the opening to allow water to flow. Therefore, there is no fear that the middle screen is damaged by the backflow water pressure.
[0014]
A second aspect of the present invention is characterized in that a pair of arc plates surrounding the impeller are provided at the edge of the opening.
Since the pair of arc plates surrounding the impeller are provided, the opening can be always closed by the blade and the arc plate no matter where the blades of the impeller stop, so that entry and exit of mosquitoes can be suppressed.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals.
FIG. 1 is a cross-sectional view of a rain water basin according to the present invention, wherein a rain water basin 11 is composed of a main body 13 disposed in a soil 12, an outer screen 15 fitted on an upper portion 14 of the main body 13, and an outer screen 15. And a middle screen 16 arranged below. Reference numerals 18 and 18 denote drain pipes connected to the lower part of the main body 13.
[0016]
The main body 13 includes first to fourth side sides (see FIG. 2) 21 to 24 and a bottom side 25 formed at a lower end of the first to fourth side sides 21 to 24.
The outer screen 15 has a lattice portion 31, through which rainwater passes.
[0017]
The middle screen 16 includes a partition plate 33 having an opening 32 and a rotatable impeller 34 attached to the opening 32. Reference numerals 35, 35 denote handles attached to the partition plate 33.
[0018]
A middle partition plate 33 is provided with a collecting part 36 which is inclined from the upper part 14 of the main body 13 toward the impeller 34 located in the center and in the direction of the bottom 25 of the rainwater basin 11 (in the direction of arrow a). Opening 32.
[0019]
The collection unit 36 forms the first to fourth inclined sides (see FIG. 2) 41 to 44 into a quadrangular pyramid shape, and a pair of arc plates 47, 47 surrounding the impeller 34 at the edges 46, 46 of the opening 32. A pair of side plates 52, 52 (see FIG. 2) surrounding the impeller 34 are provided at the edges 51, 51 (see FIG. 2) of the opening 32.
[0020]
The impeller 34 has a blade 55 attached to a rotating shaft 54, and the blade 55 opens and closes the opening 32.
The blade 55 is composed of first to sixth plate pieces 61 to 66, and a sealing material 67 is attached to the tip of each of the first to sixth plate pieces 61 to 66. The pitch angles of the pieces 61 to 66 are set to θ (... denotes a plurality, the same applies hereinafter).
[0021]
It is desirable that the gap between the sealing material 67 and the arc plates 47, 47 is set to 0 mm so that the sealing material 67 contacts the arc plate 47 weakly. However, the gap may be set to 1.5 mm or less. Lb indicates the length of the arc from the second plate piece 62 to the third plate piece 63.
The arc length of the arc plate 47 surrounding the impeller 34 was set to Lc. The arc length Lc of the arc plate 47 is a value exceeding the arc length Lb of the blade 55.
[0022]
FIG. 2 is a view taken in the direction of the arrow 2 in FIG. 1, in which the partition 33 and the first inclined side 41, the second inclined side 42, the fourth inclined side 44 of the middle screen 16 and the edges 51, 51 of the opening 32 are shown. A pair of side plates 52, 52 surrounding the provided impeller 34 and a rotating shaft 54 of the impeller 34 fitted to the side plates 52, 52 are shown.
[0023]
FIG. 3 is a detailed view of a part 3 of FIG. 2, and shows a rotating shaft 54 of the impeller 34 fitted to the side plate 52.
The rotating shaft 54 has a ring member 71 fitted to an end 68, fixes the ring member 71 with a pin 72, and rotatably supports the impeller 34. Reference numeral 73 denotes a bearing bush.
The gap S between the impeller 34 (sixth plate piece 66) and the side plate 52 is desirably set to 1.5 mm or less.
[0024]
FIG. 4 is a sectional view taken along line 4-4 of FIG. 1, in which an impeller 34 is attached to the opening 32 of the middle screen 16, the length of the blade 55 is set to L, and the impeller 34 is connected to a pair of arc plates 47, A state surrounded by 47 and a pair of side plates 52 is shown.
[0025]
FIG. 5 is a perspective view of the middle screen of the rain basin according to the present invention.
As described above, the middle screen 16 includes a middle partition plate 33 having an opening 32, and a rotatable impeller 34 attached to the opening 32. Rain water is generated by rotation of a blade 55 of the impeller 34. When the blade 55 of the impeller 34 does not rotate and does not rotate, a closed state is formed.
[0026]
The operation of the above-mentioned rainwater masturbator will now be described.
FIG. 6 is a first operation diagram of the rainwater basin according to the present invention.
The middle screen 16 of the rain water basin 11 is composed of a partition plate 33 having an opening 32 and a rotatable impeller 34 attached to the opening 32, and the opening 32 is closed by a blade 55 of the impeller 34. The mosquitoes 75... Can be prevented from entering by the middle screen 16 as shown by arrows (1) and (1), and the mosquitoes 75.
[0027]
In addition, since the opening 32 of the middle screen 16 (the middle partition plate 33) is closed by the blade 55 of the impeller 34, the upward flow from inside the rainwater basin 11 is stopped and retained as indicated by arrows (2) and (2). Can be. That is, the middle screen 16 can stop the upward flow of the bad odor generated from the polluted water 72 at the bottom of the rainwater basin 11 as shown by the arrow {circle around (3)}, thereby suppressing the odor from leaking from the rainwater basin 11.
[0028]
FIG. 7 is a second operation view of the rainwater basin according to the present invention.
The impeller 34 of the rain water basin 11 is rotated by the rain water 76 and flows the rain water 76 downstream. Specifically, when rainwater 76 flows in from the first inclined side 41 of the partitioning plate 33 as shown by an arrow {circle around (4)} and flows in from the third inclined side 43 as shown by an arrow {circle around (5)}, the impeller 34 The amount of rainwater 76 collected in the first plate piece 61 and the second plate piece 62 becomes larger than the amount of rainwater 76 collected in the fourth plate piece 64, and the balance of the impeller 34 is lost. As described above, the rainwater 76 flows down to the drain pipe 18. Therefore, rainwater can be drained.
[0029]
Similarly, when water flows backward from the drain pipe 18 due to heavy rain or the like, the impeller 34 rotates with the flow rate and pressure of the backward flowing water, so that the backward flowing water can escape to the ground surface. Therefore, even if the water flows backward or stays, there is no fear that the middle screen 16 will come off or break.
[0030]
As shown in FIG. 1, a pair of arc plates 47, 47 surrounding the impeller 34 are provided on the edge of the opening 32, so that the first to sixth plate pieces 61 to 66 of the impeller 34 Even if it stops, the opening 32 can always be closed by any of the first to sixth plate pieces 61 to 66, and the entrance and exit of mosquitoes can be suppressed.
[0031]
Since the arc length Lc of the arc plate 47 surrounding the impeller 34 is set to a value exceeding the arc length Lb of the blade 55, where the first to sixth plate pieces 61 to 66 of the impeller 34 are located Even if it stops, the opening 32 can be more reliably closed by any of the first to sixth plate pieces 61 to 66.
[0032]
The gap between the impeller 34 and the arc plates 47, 47 is set to 1.5 mm or less, and the gap S between the impeller 34 and the side plate 52 in FIG. The rotation resistance can be reduced and the passage of mosquitoes can be suppressed.
[0033]
The structure of the impeller 34 shown in the embodiment of the present invention is arbitrary. For example, the impeller 34 may be configured to rotate in only one direction, and the length L of the blade 55 together with the rotating shaft 54 may be divided into two or more. It is also possible to reduce the weight of the blade 55 by dividing it.
The number of blades 55 is six, but may be seven or more.
[0034]
【The invention's effect】
The present invention has the following effects by the above configuration.
According to the first aspect, the middle screen of the rainwater basin includes a partition plate having an opening and a rotatable impeller attached to the opening, and the opening can be closed by the impeller blades. With this configuration, the mosquitoes can be prevented from entering by the middle screen, and the ingress and egress of mosquitoes can be suppressed more reliably.
[0035]
Since the opening of the middle screen is closed by the impeller blades, the upward flow in the rainwater basin can be stopped and retained. In other words, the middle screen can stop the upward flow of offensive odor generated from the polluted water at the bottom of the rainwater trough, thereby suppressing the odor from leaking from the rainwater trough.
[0036]
Water may flow backward through drains due to heavy rains and this water may go to the ground. At this time, the impeller rotates to substantially open the opening to allow water to flow. As a result, it is possible to eliminate the possibility that the middle screen is damaged by the backflow water pressure.
[0037]
According to the second aspect, since a pair of arc plates surrounding the impeller are provided at the edge of the opening, the opening can always be closed by the blade and the arc plate regardless of where the blade of the impeller stops. Mosquitoes can be suppressed.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a rainwater masque according to the present invention. FIG. 2 is a view taken in the direction of arrow 2 in FIG. 1 FIG. 3 is a detailed view of a part 3 in FIG. 2 FIG. 5) Perspective view of the middle screen of the rainwater basin according to the present invention [Fig. 6] First operation diagram of the rainwater basin according to the present invention [Fig. 7] Second operation diagram of the rainwater basin according to the present invention [Fig. Illustration of drainage masu [Figure 9] Illustration of conventional mosquito-proof rainwater masu [Description of symbols]
11 ... rain water, 13 ... body, 14 ... upper part of the body, 15 ... outer screen, 16 ... middle screen, 18 ... drainage pipe, 32 ... opening, 33 ... partition plate, 34 ... impeller, 46 ... Edge of opening, 47: arc plate, 55: blade, 76: rainwater.

Claims (2)

In the case of a rainwater trough where the main body is installed in the middle of a drain pipe or drain, an outer screen through which rainwater passes is attached to the upper part of the main body, and a middle screen through which rainwater passes below the outer screen,
The middle screen includes a partition plate having an opening, and a rotatable impeller attached to the opening, and the opening is closed by the blades of the impeller. And rainwater. 2. The rainwater according to claim 1, wherein a pair of arc plates surrounding the impeller are provided at an edge of the opening.

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