JP6967298B2

JP6967298B2 - Displacement for sand basins and car wash machines

Info

Publication number: JP6967298B2
Application number: JP2019166723A
Authority: JP
Inventors: 廣次田村
Original assignee: 株式会社昌栄
Priority date: 2019-09-13
Filing date: 2019-09-13
Publication date: 2021-11-17
Anticipated expiration: 2039-09-13
Also published as: JP2021041366A

Description

本発明は、水処理において水中の土砂等を除去する沈砂槽及びこれを備えた洗車機用排水設備に関するものである。 The present invention relates to a sand basin that removes earth and sand in water in water treatment and a drainage facility for a car wash machine provided with the sand basin.

従来の洗車機用排水設備は、例えば下記［特許文献１］に記載されているように、洗浄排水中の油分を分離する油水分離槽が土砂等を分離する沈砂槽を兼ねているものが多い。 In many conventional drainage facilities for car wash machines, for example, as described in the following [Patent Document 1], an oil-water separation tank that separates oil in wash drainage also serves as a sand basin that separates earth and sand. ..

特開平１０−３０５７６１号公報Japanese Unexamined Patent Publication No. 10-305761

しかしながら、油水分離槽が沈砂槽を兼ねる場合、油水分離槽内に徐々に土砂等が堆積して槽の容量が減少し処理能力が低下する。このため、定期的に土砂等の堆積物を除去する必要がある。しかしながら、一般的な油水分離槽は邪魔板や隔壁等で細かく区切られており、人が手作業で除去することが難しい。このため、吸引装置等の特別な設備が必要となり、設備コストがかかるという問題点がある。 However, when the oil-water separation tank also serves as a sand basin, earth and sand gradually accumulate in the oil-water separation tank, the capacity of the tank decreases, and the treatment capacity decreases. Therefore, it is necessary to remove sediments such as earth and sand on a regular basis. However, a general oil-water separation tank is finely divided by a baffle plate, a partition wall, or the like, and it is difficult for a person to manually remove it. Therefore, there is a problem that special equipment such as a suction device is required and the equipment cost is high.

本発明は上記事情に鑑みてなされたものであり、人が手作業で堆積物を除去可能な沈砂槽及びこれを備えた洗車機用排水設備の提供を目的とする。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a sand basin in which deposits can be manually removed by a person and a drainage facility for a car wash machine equipped with the sand basin.

本発明は、
（１）上流から水が流入する流入口３２ａと下流側へ排出する流出口３２ｂとを備えた槽本体部３０と、前記槽本体部３０を仕切る複数の仕切板４０と、前記槽本体部３０の上面を塞ぐ蓋体５０と、を有し、
前記仕切板４０は、前記槽本体部３０に対し着脱可能に設置されるとともに、上端から形成され左右いずれかの方向に寄った切り欠き部４２を備え、
複数の前記仕切板４０を前記切り欠き部４２が左右交互に位置するように前記槽本体部３０に設置した沈砂槽において、
前記蓋体５０の下面に前記仕切板４０を保持する仕切ガイド５４を備えるとともに、
前記仕切板４０の上部には人が前記仕切板４０を持つための手掛孔４４を有し、
前記仕切ガイド５４の下端は前記手掛孔４４の下端よりも下に位置し、前記蓋体５０が前記槽本体部３０の上面を塞いだ際には前記仕切ガイド５４が前記手掛孔４４を覆うことを特徴とする沈砂槽８０を提供することにより、上記課題を解決する。
（２）切り欠き部４２の下端が槽本体部３０の槽内の底面から２００ｍｍ〜４００ｍｍの高さに位置することを特徴とする上記（１）記載の沈砂槽８０を提供することにより、上記課題を解決する。
（３）洗車機１０の排水部１２が流入口３２ａと接続した上記（１）または（２）に記載の沈砂槽８０と、前記沈砂槽８０の流出口３２ｂと接続した油水分離槽６０と、前記油水分離槽６０の下流に接続した排水手段７０と、を有すことを特徴とする洗車機用排水設備１００を提供することにより、上記課題を解決する。
（４）排水手段７０が水を地中に浸透させる浸透桝であり、
油水分離槽６０は複数の隔壁６４によって仕切られるとともに、
前記隔壁６４は左右いずれかの方向に寄った通水孔６６を備え、さらに前記通水孔６６は上流から下流に向かって左右交互に位置するように設けられ、
また、前記通水孔６６は上流側が少なくとも下方が開口した遮油壁６８にて囲われることを特徴とする上記（３）記載の洗車機用排水設備１００を提供することにより、上記課題を解決する。 The present invention
(1) A tank main body 30 having an inflow port 32a for water to flow in from the upstream and an outflow port 32b for discharging water to the downstream side, a plurality of partition plates 40 for partitioning the tank main body 30, and the tank main body 30. a lid 50 which closes the upper surface, have a,
The partition plate 40 is detachably installed with respect to the tank main body portion 30 and includes a notch portion 42 formed from the upper end and inclined to either the left or right direction.
In a sand basin in which a plurality of the partition plates 40 are installed in the tank main body 30 so that the notches 42 are alternately located on the left and right sides.
Provided with a partition guide 54 for holding the partition plates 40 to the lower surface of the lid 50,
A clue hole 44 for a person to hold the partition plate 40 is provided on the upper portion of the partition plate 40.
The lower end of the partition guides 54 is located below the lower end of the hand Kakeana 44, when the lid 50 closes the upper surface of the tank body portion 30 has the partition guide 54 the hand Kakeana 44 by providing a precipitated sand tank 80 characterized by covering, to solve the above problems.
( 2 ) By providing the sand basin 80 according to (1) above, the lower end of the notch 42 is located at a height of 200 mm to 400 mm from the bottom surface of the tank body 30. Solve the problem.
( 3 ) The sand basin 80 according to (1) or (2) above, in which the drainage portion 12 of the car wash machine 10 is connected to the inflow port 32a, and the oil-water separation tank 60 connected to the outlet 32b of the sand basin 80. The above problem is solved by providing a drainage facility 100 for a car wash machine, which comprises a drainage means 70 connected to the downstream side of the oil-water separation tank 60.
( 4 ) The drainage means 70 is a permeation basin that allows water to permeate into the ground.
The oil-water separation tank 60 is partitioned by a plurality of partition walls 64 and is separated by a plurality of partition walls 64.
The partition wall 64 is provided with a water passage hole 66 that is closer to either the left or right direction, and the water passage hole 66 is provided so as to be alternately located on the left and right from the upstream to the downstream.
Further, the above-mentioned problem is solved by providing the drainage facility 100 for a car wash machine according to the above (3 ), wherein the water passage hole 66 is surrounded by an oil-shielding wall 68 having an opening at least downward on the upstream side. do.

本発明に係る沈砂槽及びこれを備えた洗車機用排水設備は、沈砂槽の仕切板が着脱可能に構成され、また沈砂槽の底面は人が両足で立つことのできる広さを有する。このため、仕切板を外した後に作業者が沈砂槽内に降りることで、シャベル等を用いて簡単に堆積物を排出することができる。 The sand basin according to the present invention and the drainage facility for a car wash machine provided with the sand basin are configured so that the partition plate of the sand basin can be attached and detached, and the bottom surface of the sand basin has a size that allows a person to stand on both feet. Therefore, when the worker descends into the sand basin after removing the partition plate, the sediment can be easily discharged using a shovel or the like.

本発明に係る沈砂槽の分解斜視図である。It is an exploded perspective view of the sand basin which concerns on this invention. 本発明に係る沈砂槽の蓋体を示す図である。It is a figure which shows the lid body of the sand basin which concerns on this invention. 本発明に係る沈砂槽の蓋体の仕切ガイドを説明する図である。It is a figure explaining the partition guide of the lid body of the sand basin which concerns on this invention. 本発明に係る洗車機用排水設備を示す図である。It is a figure which shows the drainage facility for a car wash machine which concerns on this invention. 本発明に係る洗車機用排水設備に好適な油水分離槽の略断面図である。It is a schematic cross-sectional view of the oil-water separation tank suitable for the drainage facility for a car wash machine which concerns on this invention.

本発明に係る沈砂槽８０及び洗車機用排水設備１００について図面に基づいて説明する。ここで、図１は本発明に係る沈砂槽８０の分解斜視図である。図１に示す本発明に係る沈砂槽８０は、流入口３２ａと流出口３２ｂとを備えた槽本体部３０と、この槽本体部３０を縦方向に仕切る複数の仕切板４０と、槽本体部３０の上面を塞ぐ蓋体５０と、を有している。 The sand basin 80 and the drainage facility 100 for a car wash machine according to the present invention will be described with reference to the drawings. Here, FIG. 1 is an exploded perspective view of the sand basin 80 according to the present invention. The sand basin 80 according to the present invention shown in FIG. 1 includes a tank body 30 having an inlet 32a and an outlet 32b, a plurality of partition plates 40 for vertically partitioning the tank body 30, and a tank body. It has a lid 50 that closes the upper surface of the 30.

そして、仕切板４０は、この仕切板４０の上端から形成され左右いずれかの方向に寄った切り欠き部４２を備え、この切り欠き部４２が槽本体部３０の上流側から下流側に向け左右交互に位置するように着脱可能に設置される。この際、流入口３２ａと流出口３２ｂの位置も含めて左右交互とすることが好ましい。また、仕切板４０の上部辺縁部には人が仕切板４０を持つときに使用する手掛孔４４を設ける。このようにして、槽本体部３０の内部は仕切板４０によって複数の空間（図１では第１室〜第４室）に区切られる。このとき、各室の流路の幅、即ち、槽本体部３０と仕切板４０との間隔もしくは仕切板４０同士の間隔は切り欠き部４２の幅よりも広くすることが好ましい。尚、これらの条件を満たしていれば仕切板４０の設置枚数に特に限定は無い。尚、ここでは仕切板４０の数が３枚の例を示している。
The partition plate 40 is provided with a notch 42 formed from the upper end of the partition plate 40 and is inclined to either the left or right direction, and the notch 42 is left and right from the upstream side to the downstream side of the tank main body portion 30. It is detachably installed so that it is located alternately. At this time, it is preferable to alternate left and right including the positions of the inflow port 32a and the outflow port 32b. Further, the upper edges of the partition plate 40 Ru provided TeKakeana 44 to be used when a person has a partition plate 40. In this way, the inside of the tank main body 30 is divided into a plurality of spaces (1st to 4th rooms in FIG. 1) by the partition plate 40. At this time, it is preferable that the width of the flow path of each chamber, that is, the distance between the tank main body 30 and the partition plate 40 or the distance between the partition plates 40 is wider than the width of the notch 42. As long as these conditions are satisfied, the number of partition plates 40 to be installed is not particularly limited. Here, an example in which the number of partition plates 40 is three is shown.

また、槽本体部３０はコンクリートやＦＲＰ（ＦｉｂｅｒＲｅｉｎｆｏｒｃｅｄＰｌａｓｔｉｃｓ：繊維強化プラスチック）等で構成され、槽内の底面の寸法は少なくとも人が両足で立つことのできる値、例えば幅が４００ｍｍ〜８００ｍｍ、長さが８０ｍｍ〜１５００ｍｍ程度とすることが好ましい。また、槽の深さは４００ｍｍ〜７００ｍｍ程度とすることが好ましい。そして、槽本体部３０の一方の側壁には、前述のように上流側の設備から排出された水が槽内へと流入する流入口３２ａが設けられている。尚、ここでの上流側の設備とは、沈砂槽８０を浄水設備で用いる場合には河川等から原水を取水する取水設備等であり、沈砂槽８０を排水処理設備で用いる場合には排水ピットや排水溝、機械設備や建築物の排水管等である。また、沈砂槽８０をガソリンスタンドや洗車場等の洗車機１０の排水設備（洗車機用排水設備１００）に用いる場合には、この上流側の設備とは洗車機１０の排水ピットや排水溝等の排水部１２となる。 Further, the tank body 30 is made of concrete, FRP (Fiber Reinforced Plastics) or the like, and the dimensions of the bottom surface of the tank are at least a value that allows a person to stand on both feet, for example, a width of 400 mm to 800 mm and a length. The size is preferably about 80 mm to 1500 mm. The depth of the tank is preferably about 400 mm to 700 mm. Then, on one side wall of the tank main body 30, as described above, an inflow port 32a through which the water discharged from the equipment on the upstream side flows into the tank is provided. The equipment on the upstream side here is an intake facility or the like that takes in raw water from a river or the like when the sand set tank 80 is used in a water purification facility, and a drainage pit when the sand set tank 80 is used in a wastewater treatment facility. Drainage ditches, drainage pipes for mechanical equipment and buildings, etc. Further, when the sand sink 80 is used as a drainage facility (drainage facility 100 for a car wash machine) of a car wash machine 10 such as a gas station or a car wash place, the facility on the upstream side is a drainage pit, a drainage ditch, etc. of the car wash machine 10. It becomes the drainage part 12.

また、槽本体部３０のもう一方の側壁、一般的には流入口３２ａの設置面と反対側の側壁には沈砂槽８０の水を下流側の設備へと排出する流出口３２ｂが設けられる。尚、ここでの下流側の設備とは、油水分離槽や濾過槽、凝集剤添加設備等の周知の水処理設備である。特に、沈砂槽８０を洗車機用排水設備１００に用いる場合には、油水分離槽６０が下流側の設備となる。また、流出口３２ｂの位置は流入口３２ａよりも下に設け、且つ流出口３２ｂの下端を仕切板４０の切り欠き部４２の下端の位置と略同等とすることが好ましい。この構成によれば、後述する堆積物の除去作業時には沈砂槽８０内の水位が低く、槽内の排水作業を行わなくとも除去作業を行う事ができる。 Further, on the other side wall of the tank main body 30, generally, the side wall opposite to the installation surface of the inflow port 32a, an outflow port 32b for discharging the water of the sand basin 80 to the equipment on the downstream side is provided. The equipment on the downstream side here is a well-known water treatment equipment such as an oil-water separation tank, a filtration tank, and a flocculant addition equipment. In particular, when the sand basin 80 is used for the car wash drainage facility 100, the oil-water separation tank 60 is the facility on the downstream side. Further, it is preferable that the position of the outlet 32b is provided below the inlet 32a, and the lower end of the outlet 32b is substantially the same as the position of the lower end of the cutout portion 42 of the partition plate 40. According to this configuration, the water level in the sand basin 80 is low at the time of the sediment removal work described later, and the removal work can be performed without performing the drainage work in the tank.

また、槽本体部３０の内壁側面には仕切板４０を挿入保持する縦溝３４が設けられている。尚、縦溝３４は内壁側面から突出した２本の凸条で形成しても良いが、槽の内側に突出物が存在すると堆積物の除去作業の邪魔となるため、図１に示すように槽本体部３０の内壁側面から凹むように形成することが特に好ましい。 Further, a vertical groove 34 for inserting and holding the partition plate 40 is provided on the inner wall side surface of the tank main body portion 30. The vertical groove 34 may be formed by two protrusions protruding from the side surface of the inner wall, but if a protrusion exists inside the tank, it interferes with the work of removing the deposit, so as shown in FIG. It is particularly preferable to form the tank body 30 so as to be recessed from the side surface of the inner wall.

また、仕切板４０は鉄等の金属や強化プラスチック等で構成された板状体であり、前述のように上部から形成された切り欠き部４２を有している。また、仕切板４０の高さは槽本体部３０の深さと略同等であり、仕切板４０の幅は対向する縦溝３４間の寸法と略同等である。よって、仕切板４０が縦溝３４に挿入すると、槽本体部３０の槽内は仕切板４０によって完全に分断され、分断された各室への水の流通は切り欠き部４２を通してのみとなる。また、切り欠き部４２は前述のように中央ではなく、左右いずれかに寄って形成される。尚、仕切板４０は切り欠き部４２が右寄りのものと左寄りのものとで作り分ける必要は無く、同一形状のものを左右で裏返して使い分ければよい。そして、基本的にこの切り欠き部４２の下端位置が槽本体部３０における堆積物の許容量を示す。ここで、槽本体部３０内の底面から切り欠き部４２の下端までの高さ、即ち切り欠き部４２の下端から仕切板４０の下端までの長さＬは、堆積物の除去作業の効率の観点から２００ｍｍ〜４００ｍｍ程度とすることが好ましい。尚、長さＬが２００ｍｍ未満の場合、沈砂槽８０の能力に対して堆積物の許容量が少なく除去作業の頻度が高くなる。また、長さＬが４００ｍｍを超えると堆積物の層厚が厚すぎて除去作業に大きな労力を要することとなる。 Further, the partition plate 40 is a plate-like body made of a metal such as iron or reinforced plastic, and has a notch portion 42 formed from the upper portion as described above. Further, the height of the partition plate 40 is substantially the same as the depth of the tank main body portion 30, and the width of the partition plate 40 is substantially the same as the dimension between the vertical grooves 34 facing each other. Therefore, when the partition plate 40 is inserted into the vertical groove 34, the inside of the tank of the tank main body 30 is completely divided by the partition plate 40, and the water flow to each of the divided chambers is only through the notch 42. Further, the notch portion 42 is formed not in the center as described above but in the left or right side. It is not necessary to make the partition plate 40 separately for the one on the right side and the one on the left side of the notch 42, and it is sufficient to turn over the same shape on the left and right and use them properly. Basically, the lower end position of the notch 42 indicates the allowable amount of sediment in the tank body 30. Here, the height from the bottom surface of the tank body 30 to the lower end of the notch 42, that is, the length L from the lower end of the notch 42 to the lower end of the partition plate 40 is the efficiency of the sediment removal work. From the viewpoint, it is preferably about 200 mm to 400 mm. When the length L is less than 200 mm, the allowable amount of sediment is small with respect to the capacity of the sand basin 80, and the frequency of removal work is high. Further, if the length L exceeds 400 mm, the layer thickness of the deposit is too thick and a large amount of labor is required for the removal work.

また、蓋体５０は槽本体部３０を塞ぐ蓋であり下面側に、図２に示すような下方へ突出した蓋ガイド５２と、仕切板４０を保持する仕切ガイド５４と、を有している。尚、蓋ガイド５２は槽本体部３０の内壁に沿う寸法で形成され、蓋ガイド５２を槽本体部３０に嵌め込むことで、蓋体５０の位置決めがなされるとともに、蓋体５０が槽本体部３０の上面を閉塞する。 Further, the lid 50 is a lid that closes the tank main body 30, and has a lid guide 52 protruding downward as shown in FIG. 2 and a partition guide 54 for holding the partition plate 40 on the lower surface side. .. The lid guide 52 is formed with dimensions along the inner wall of the tank main body 30, and by fitting the lid guide 52 into the tank main body 30, the lid 50 is positioned and the lid 50 is the tank main body. The upper surface of 30 is closed.

また、仕切ガイド５４は、図３（ａ）の横断面図に示すように、例えば断面Ｌ字状の１対のアングル部材５３によって形成され、蓋体５０に対して垂直な面が所定の間隙を取って対向することで構成される。そして、この対向した垂直面の間隙に仕切板４０の上端部が挿入することで仕切板４０を保持する。これにより、仕切板４０と蓋体５０との間には露出した空隙が存在せず、槽本体部３０内を流れる水は仕切板４０の上を越えることなく、切り欠き部４２を通ることとなる。さらに、仕切ガイド５４の幅Ｈは図３（ａ）、（ｂ）に示すように、蓋体５０が閉められた状態で仕切ガイド５４の下端が手掛孔４４の下端よりも下に位置する寸法とする。これにより、蓋体５０が閉められた状態では手掛孔４４は仕切ガイド５４によって覆われ、手掛孔４４を通しての水の流通は阻害される。これにより、槽本体部３０内を流れる水は手掛孔４４を流れることなく、切り欠き部４２側を流下することとなる。 Further, as shown in the cross-sectional view of FIG. 3A, the partition guide 54 is formed by, for example, a pair of angle members 53 having an L-shaped cross section, and a surface perpendicular to the lid 50 is a predetermined gap. It is composed of taking and facing each other. Then, the partition plate 40 is held by inserting the upper end portion of the partition plate 40 into the gap between the facing vertical surfaces. As a result, there is no exposed gap between the partition plate 40 and the lid 50, and the water flowing in the tank body 30 passes through the notch 42 without passing over the partition plate 40. Become. Further, as shown in FIGS. 3A and 3B, the width H of the partition guide 54 is such that the lower end of the partition guide 54 is located below the lower end of the handle hole 44 with the lid 50 closed. It is a dimension. As a result, when the lid 50 is closed, the handle hole 44 is covered with the partition guide 54, and the flow of water through the handle hole 44 is obstructed. As a result, the water flowing in the tank main body 30 does not flow through the hook hole 44, but flows down on the notch 42 side.

次に、本発明に係る洗車機用排水設備１００に関して説明する。本発明に係る洗車機用排水設備１００は、図４に示すように、本発明に係る沈砂槽８０と、この沈砂槽８０の流出口３２ｂと接続した油水分離槽６０と、この油水分離槽６０の下流に接続した排水手段７０と、を有している。そして、この沈砂槽８０の流入口３２ａが洗車機１０の排水部１２と周知の配管等を介して接続する。尚、洗車機用排水設備１００の排水手段７０としては如何なるものを用いても良いが、地中に浸透させて排水する周知の浸透桝を用いることが好ましい。 Next, the drainage facility 100 for a car wash machine according to the present invention will be described. As shown in FIG. 4, the car wash drainage facility 100 according to the present invention includes a sand basin 80 according to the present invention, an oil-water separation tank 60 connected to an outlet 32b of the sand basin 80, and an oil-water separation tank 60. It has a drainage means 70 connected to the downstream side of the water. Then, the inflow port 32a of the sand basin 80 is connected to the drainage portion 12 of the car wash machine 10 via a well-known pipe or the like. Any kind of drainage means 70 may be used as the drainage means 70 of the drainage facility 100 for a car wash machine, but it is preferable to use a well-known permeation basin that permeates into the ground and drains water.

次に、本発明に好適な油水分離槽６０の構成を説明する。ここで、図５は本発明に好適な油水分離槽６０の略断面図である。本発明に好適な油水分離槽６０は、通水孔６６を備えた隔壁６４により縦方向に仕切られた分離槽本体部６２と、この分離槽本体部６２の上面を塞ぐ図示しない蓋体と、を有している。また、分離槽本体部６２の上流側の側壁には沈砂槽８０の流出口３２ｂと接続する分離槽流入口６２ａを有し、下流側の側壁には排水手段７０と接続する分離槽流出口６２ｂを有する。尚、分離槽流入口６２ａ、分離槽流出口６２ｂ、通水孔６６は上流から下流に向かって左右交互に位置するように、左右いずれかの方向に寄って形成することが好ましい。また、通水孔６６及び分離槽流出口６２ｂの上流側には少なくとも下方が開口した略コの字形状の遮油壁６８が設置され、これにより通水孔６６及び分離槽流出口６２ｂの上流側はこの遮油壁６８にて囲われることとなる。また、分離槽流入口６２ａには沈砂槽８０を通過した浮遊ゴミを捕集するダストトラップ６９が設けられる。 Next, the configuration of the oil-water separation tank 60 suitable for the present invention will be described. Here, FIG. 5 is a schematic cross-sectional view of an oil-water separation tank 60 suitable for the present invention. The oil-water separation tank 60 suitable for the present invention includes a separation tank main body 62 vertically partitioned by a partition wall 64 provided with a water passage hole 66, and a lid (not shown) that closes the upper surface of the separation tank main body 62. have. Further, the side wall on the upstream side of the separation tank main body 62 has a separation tank inlet 62a connected to the outlet 32b of the sand basin 80, and the side wall on the downstream side has a separation tank outlet 62b connected to the drainage means 70. Has. It is preferable that the separation tank inlet 62a, the separation tank outlet 62b, and the water passage hole 66 are formed so as to be alternately located on the left and right from the upstream to the downstream in either the left or right direction. Further, on the upstream side of the water passage hole 66 and the separation tank outlet 62b, a substantially U-shaped oil barrier wall 68 having at least a lower opening is installed, thereby upstream of the water passage hole 66 and the separation tank outlet 62b. The side will be surrounded by this oil barrier 68. Further, a dust trap 69 for collecting floating dust that has passed through the sand basin 80 is provided at the separation tank inlet 62a.

次に、沈砂槽８０の動作を本発明に係る洗車機用排水設備１００を用いて説明する。先ず、洗車機１０は例えばレールに沿って前進後退動作し、水の噴射、液体洗剤による洗浄、液体ワックスの塗布、送風による水滴除去等を設定に従って行うものであり、洗車動作によって生じた洗剤やワックス等を含む洗浄排水は排水ピットや排水溝等の洗車機１０の排水部１２に流入する。そして、これらの洗浄排水は洗車機用排水設備１００の沈砂槽８０内に流入口３２ａを通して流入する。流入した洗浄排水は最上流に位置する仕切板４０にて堰き止められ、その流速は低下する。この際、土砂等の重量物は沈降し槽本体部３０の内壁と最上流の仕切板４０とで区切られた第１室の底に堆積する。次に、洗浄排水は最上流の仕切板４０の切り欠き部４２を通って、最上流の仕切板４０と２番目の仕切板４０とで区切られた第２室に流入する。この際、切り欠き部４２の幅を各室の幅（流路の幅）よりも狭く形成することで、切り欠き部４２を通過する際の水の流速はベルヌーイの法則により増加する。そして、切り欠き部４２を通過した洗浄排水は２番目の仕切板４０にて堰き止められて流速が低下する。そして、第２室に流入した比較的軽量の重量物は沈降し第２室の底に堆積する。このようにして洗浄排水は流速に緩急を付けられながら、仕切板４０と切り欠き部４２によって構成された流路（第１室〜第４室）を上流から下流に向けて折り返しながら流下する。そして、この間に重量物は沈降して分離される。重量物が分離した洗浄排水は流出口３２ｂを通って油水分離槽６０に流入する。 Next, the operation of the sand basin 80 will be described using the car wash machine drainage facility 100 according to the present invention. First, the car wash machine 10 moves forward and backward along the rail, for example, and performs water injection, washing with a liquid detergent, application of liquid wax, removal of water droplets by blowing air, etc. according to the settings. The washing drainage containing wax or the like flows into the drainage portion 12 of the car wash machine 10 such as a drainage pit or a drainage ditch. Then, these washing drainage flows into the sand basin 80 of the car wash machine drainage facility 100 through the inflow port 32a. The inflowing washing drainage is blocked by the partition plate 40 located at the uppermost stream, and the flow velocity thereof decreases. At this time, heavy objects such as earth and sand settle and deposit on the bottom of the first chamber separated by the inner wall of the tank main body 30 and the uppermost partition plate 40. Next, the washing drainage flows into the second chamber separated by the most upstream partition plate 40 and the second partition plate 40 through the notch 42 of the most upstream partition plate 40. At this time, by forming the width of the notch 42 narrower than the width of each chamber (width of the flow path), the flow velocity of water when passing through the notch 42 increases according to Bernoulli's law. Then, the washing drainage that has passed through the notch 42 is blocked by the second partition plate 40, and the flow velocity decreases. Then, the relatively lightweight heavy object that has flowed into the second chamber settles and deposits on the bottom of the second chamber. In this way, the washing drainage flows down while turning back from the upstream to the downstream in the flow path (1st to 4th chambers) composed of the partition plate 40 and the notch 42 while adjusting the flow velocity. During this period, the heavy object is settled and separated. The washing drainage from which heavy objects have been separated flows into the oil-water separation tank 60 through the outlet 32b.

また、油水分離槽６０に流入した洗浄排水は、先ず分離槽流入口６２ａに設置されたダストトラップ６９によってゴミ等の比較的大きな浮遊物が捕集される。次に、洗浄排水は、分離槽本体部６２と最上流の隔壁６４とで区切られた第１室に流入する。そして、洗浄排水中の水分は遮油壁６８の下側を通って通水孔６６を抜け、２番目の隔壁６４との間に形成された第２室に流入する。この時、水よりも軽い油分は浮上油として水面に存在し、遮油壁６８に阻まれて通水孔６６を通過することができない。同様に第２室、第３室の遮油壁６８も浮上油の通水孔６６及び分離槽流出口６２ｂへの通過を阻止し、浮上油の下流への流下を防止する。これにより、洗浄排水中の浮上油は油水分離槽６０にて分離され水のみが分離槽流出口６２ｂから排水手段７０に排出される。そして、排水手段７０が浸透桝の場合、流入した水は破石層等を通して地中に浸透し排水される。 Further, in the washing drainage that has flowed into the oil-water separation tank 60, relatively large suspended matter such as dust is first collected by the dust trap 69 installed at the separation tank inlet 62a. Next, the washing drainage flows into the first chamber separated by the separation tank main body 62 and the most upstream partition wall 64. Then, the water in the washing drainage passes under the oil barrier 68, passes through the water passage hole 66, and flows into the second chamber formed between the second partition wall 64 and the second partition wall 64. At this time, oil lighter than water exists on the water surface as floating oil and cannot pass through the water passage hole 66 because it is blocked by the oil barrier wall 68. Similarly, the oil barrier walls 68 of the second chamber and the third chamber also block the passage of the floating oil to the water passage hole 66 and the separation tank outlet 62b, and prevent the floating oil from flowing downstream. As a result, the floating oil in the washing drainage is separated in the oil-water separation tank 60, and only water is discharged from the separation tank outlet 62b to the drainage means 70. When the drainage means 70 is an infiltration basin, the inflowing water permeates into the ground through a stone rupture layer or the like and is drained.

また、洗車機用排水設備１００の使用により、沈砂槽８０の各室の底には徐々に堆積物が溜まっていく。そして、堆積物の層が概ね切り欠き部４２の下端に到達すると、作業者はこれを目視にて確認し堆積物の除去作業を行う。堆積物の除去作業は先ず、洗車機１０を停止するなどして、流入口３２ａから新たな洗浄排水が沈砂槽８０に流れ込まないようにする。次に、蓋体５０を取外し沈砂槽８０を開ける。次に、手掛孔４４を持って仕切板４０を縦溝３４から引抜き沈砂槽８０から取り外す。これにより、沈砂槽８０は人が両足で立つことのできる広さの１つの槽となる。このとき、流出口３２ｂの下端と切り欠き部４２の下端の位置とは略同等であるから、沈砂槽８０の水位は切り欠き部４２の下端位置と略同等となる。よって、堆積物が切り欠き部４２の下端まで溜まった状態では沈砂槽８０内に残留している水の量は少なく、別途排水作業を行うことなく堆積物の除去作業を行う事ができる。 Further, due to the use of the drainage facility 100 for a car wash machine, deposits gradually accumulate at the bottom of each chamber of the sand basin 80. Then, when the layer of the sediment reaches the lower end of the cutout portion 42, the operator visually confirms this and performs the work of removing the sediment. In the work of removing the sediment, first, the car wash machine 10 is stopped to prevent new washing drainage from flowing into the sand basin 80 from the inflow port 32a. Next, the lid 50 is removed and the sand basin 80 is opened. Next, the partition plate 40 is pulled out from the vertical groove 34 with the handle hole 44 and removed from the sand basin 80. As a result, the sand basin 80 becomes one tank having a size that allows a person to stand on both feet. At this time, since the positions of the lower end of the outlet 32b and the lower end of the notch 42 are substantially the same, the water level of the sand basin 80 is substantially the same as the position of the lower end of the notch 42. Therefore, when the sediment is accumulated up to the lower end of the notch 42, the amount of water remaining in the sand basin 80 is small, and the sediment can be removed without performing a separate drainage operation.

次に、作業者が沈砂槽８０内に降り、シャベル等で堆積物を掘り出し沈砂槽８０の外に排出する。排出された堆積物は然るべき方法により処分される。そして、堆積物の除去が終了すると作業者は沈砂槽８０から出て、仕切板４０を縦溝３４に挿入して沈砂槽８０を区切る。次に、蓋体５０を沈砂槽８０の上面に被せるとともに仕切ガイド５４に仕切板４０の上端を挿入して保持する。これにより、堆積物の除去作業が完了する。そして、作業者は洗車機１０を再稼働する。 Next, the worker descends into the sand basin 80, digs up the sediment with a shovel or the like, and discharges it to the outside of the sand basin 80. The discharged sediment is disposed of in an appropriate manner. Then, when the removal of the deposit is completed, the worker leaves the sand basin 80 and inserts the partition plate 40 into the vertical groove 34 to divide the sand basin 80. Next, the lid 50 is placed on the upper surface of the sand basin 80, and the upper end of the partition plate 40 is inserted into and held by the partition guide 54. This completes the work of removing the deposits. Then, the worker restarts the car wash machine 10.

以上のように、本発明に係る沈砂槽８０及びこれを備えた洗車機用排水設備１００は、沈砂槽８０が油水分離槽６０とは別に独立して設けられ、且つ沈砂槽８０の仕切板４０が着脱可能に構成される。また、沈砂槽８０の底面は人が両足で立つことのできる広さを有する。このため、仕切板４０を外した後に作業者が沈砂槽８０内に降りることで、シャベル等を用いて簡単に堆積物を排出することができる。これにより、堆積物の除去作業に吸引装置等の特別な設備が不要となり、設備コストの低減を図ることができる。 As described above, in the sand basin 80 according to the present invention and the drainage facility 100 for a car wash machine provided with the sand basin 80, the sand basin 80 is provided separately from the oil-water separation tank 60, and the partition plate 40 of the sand basin 80 is provided. Is configured to be removable. Further, the bottom surface of the sand basin 80 has a size that allows a person to stand on both feet. Therefore, when the worker descends into the sand basin 80 after removing the partition plate 40, the sediment can be easily discharged using a shovel or the like. As a result, special equipment such as a suction device is not required for the work of removing the deposit, and the equipment cost can be reduced.

また、本発明に係る沈砂槽８０の仕切板４０は左右いずれかの方向に寄った切り欠き部４２を備え、この切り欠き部４２が槽本体部３０の上流側から下流側に向け左右交互に位置するように設置される。これにより、沈砂槽８０を流下する水の流速に緩急が付き、土砂等の重量物を効果的に沈降、分離することができる。 Further, the partition plate 40 of the sand basin 80 according to the present invention is provided with a notch 42 that is closer to either the left or right direction, and the notch 42 alternates left and right from the upstream side to the downstream side of the tank main body 30. It is installed so that it is located. As a result, the flow velocity of the water flowing down the sand basin 80 is slowed down, and heavy objects such as earth and sand can be effectively settled and separated.

さらに、流出口３２ｂの下端と切り欠き部４２の下端の位置とを略同等にすることで堆積物が切り欠き部４２の下端まで溜まった状態では沈砂槽８０内の水量は少なく、別途排水作業を行うことなく堆積物の除去作業を行う事ができる。 Further, by making the positions of the lower end of the outlet 32b and the lower end of the notch 42 substantially equal to each other, the amount of water in the sand basin 80 is small when the sediment is accumulated up to the lower end of the notch 42, and drainage work is performed separately. It is possible to perform the work of removing the sediment without performing the above.

尚、本例で示した沈砂槽８０、洗車機用排水設備１００の各部の構成、機構、形状、デザイン、寸法、動作等は一例であるから、特に本例に限定される訳ではなく、本発明は本発明の要旨を逸脱しない範囲で変更して実施することが可能である。 Since the configuration, mechanism, shape, design, dimensions, operation, etc. of each part of the sand sink 80 and the drainage facility 100 for a car wash machine shown in this example are examples, the present invention is not particularly limited to this example. The invention can be modified and implemented without departing from the gist of the present invention.

１０洗車機
１２排水部
３０槽本体部
３２ａ流入口
３２ｂ流出口
４０仕切板
４２切り欠き部
４４手掛孔
５０蓋体
５４仕切ガイド
６０油水分離槽
６４隔壁
６６通水孔
６８遮油壁
７０排水手段
８０沈砂槽
１００洗車機用排水設備 10 car wash machine
12 Drainage section
30 Tank body
32a inlet
32b outlet
40 divider
42 Notch
44 Hand hole
50 lid
54 Partition guide
60 Oil-water separation tank
64 bulkhead
66 Water flow hole
68 Oily wall
70 Drainage means
80 sand basin
100 Car wash drainage

Claims

上流から水が流入する流入口と下流側へ排出する流出口とを備えた槽本体部と、
前記槽本体部を仕切る複数の仕切板と、
前記槽本体部の上面を塞ぐ蓋体と、を有し、
前記仕切板は、前記槽本体部に対し着脱可能に設置されるとともに、上端から形成され左右いずれかの方向に寄った切り欠き部を備え、
複数の前記仕切板を前記切り欠き部が左右交互に位置するように前記槽本体部に設置した沈砂槽において、
前記蓋体の下面に前記仕切板を保持する仕切ガイドを備えるとともに、
前記仕切板の上部には人が前記仕切板を持つための手掛孔を有し、
前記仕切ガイドの下端は前記手掛孔の下端よりも下に位置し、前記蓋体が前記槽本体部の上面を塞いだ際には前記仕切ガイドが前記手掛孔を覆うことを特徴とする沈砂槽。 A tank body having an inlet for water to flow in from the upstream and an outlet for discharge to the downstream side.
A plurality of partition plates for partitioning the main body of the tank,
Have a, a lid for closing an upper surface of the tank body portion,
The partition plate is detachably installed with respect to the tank main body portion, and is provided with a notch portion formed from the upper end and inclined to either the left or right direction.
In a sand basin in which a plurality of the partition plates are installed in the tank main body so that the notches are alternately located on the left and right.
A partition guide for holding the partition plate is provided on the lower surface of the lid, and the partition guide is provided.
The upper part of the partition plate has a clue hole for a person to hold the partition plate.
The lower end of the partition guide is located below the lower end of the handle hole, and when the lid closes the upper surface of the tank body, the partition guide covers the handle hole. Settling basin.

切り欠き部の下端が槽本体部の槽内の底面から２００ｍｍ〜４００ｍｍの高さに位置することを特徴とする請求項１記載の沈砂槽。 Settling tank according to claim 1, wherein the lower end of the cutout portion and being located from the bottom surface of the tank of the tank main body to a height of 200Mm～400mm.

洗車機の排水部が流入口と接続した請求項１または請求項２に記載の沈砂槽と、
前記沈砂槽の流出口と接続した油水分離槽と、
前記油水分離槽の下流に接続した排水手段と、を有すことを特徴とする洗車機用排水設備。 The sand basin according to claim 1 or 2 , wherein the drainage portion of the car wash machine is connected to the inlet.
An oil-water separation tank connected to the outlet of the sand basin,
A drainage facility for a car wash machine, characterized by having a drainage means connected to the downstream of the oil-water separation tank.

排水手段が水を地中に浸透させる浸透桝であり、
油水分離槽は複数の隔壁によって仕切られるとともに、
前記隔壁は左右いずれかの方向に寄った通水孔を備え、さらに前記通水孔は上流から下流に向かって左右交互に位置するように設けられ、
また、前記通水孔は上流側が少なくとも下方が開口した遮油壁にて囲われることを特徴とする請求項３記載の洗車機用排水設備。 The drainage means is an infiltration basin that allows water to penetrate into the ground.
The oil-water separation tank is separated by multiple partition walls and is separated by multiple partition walls.
The partition wall is provided with water passage holes that are oriented in either the left or right direction, and the water passage holes are provided so as to be alternately located on the left and right from upstream to downstream.
The drainage facility for a car wash machine according to claim 3 , wherein the water passage hole is surrounded by an oil-shielding wall having an opening at least below on the upstream side.