JP4536438B2 - Rotating drum type sand settling machine - Google Patents

Rotating drum type sand settling machine Download PDF

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JP4536438B2
JP4536438B2 JP2004191714A JP2004191714A JP4536438B2 JP 4536438 B2 JP4536438 B2 JP 4536438B2 JP 2004191714 A JP2004191714 A JP 2004191714A JP 2004191714 A JP2004191714 A JP 2004191714A JP 4536438 B2 JP4536438 B2 JP 4536438B2
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drum
sand
residue
air
rotating drum
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JP2006007173A (en
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泰典 中野
輝一 新阜
朋史 佐藤
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Hitachi Plant Technologies Ltd
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Description

本発明は、回転ドラム式沈砂分級機に関し、特に、下水処理場内の沈砂池等より回収された沈砂（汚砂を含み、以下「沈砂」という。）から、し渣（夾雑物）を除去するために洗浄した後、該洗浄後の沈砂の含水率を低下させ、かつその粒径に応じて分別して個別的に取り出すようにした回転ドラム式沈砂分級機に関するものである。   TECHNICAL FIELD The present invention relates to a rotary drum type sand settling classifier, and in particular, removes sediment (contaminants) from sand settling from a sand settling basin or the like in a sewage treatment plant (including dirty sand, hereinafter referred to as “sand settling”). Therefore, the present invention relates to a rotary drum type sand settling machine in which the water content of the settling sand after the washing is reduced, and is separated according to the particle size and individually taken out.

従来、下水処理場や浄水場等の沈砂池からポンプを用いて揚砂された沈砂は、比重差分離、遠心分離等を用いて固液分離を行うようにした沈砂処理装置により、沈砂の洗浄中に浮遊する夾雑物を汚水と共に越流させることにより固液分離し、底部に沈殿する砂分を回収するようにしている。
しかしながら、洗浄された沈砂においても、ヘドロ状の粒径の微少なるものから小石ほどの比較的粒径の大きなものまで混じり合った状態となっている。 Conventionally, sand settling using a pump from a sand settling basin such as a sewage treatment plant or a water purification plant is washed by a sand settling device that performs solid-liquid separation using differential gravity separation, centrifugation, etc. Solids and liquids are separated by allowing the contaminants floating inside to overflow with the sewage, and the sand that settles at the bottom is collected.
However, even in the washed sedimentation sand, it is in a state of being mixed from a sludge-like particle size as small as a pebbles having a relatively large particle size.

ところで、近年、廃棄物に関する規制が厳しくなり、沈砂池より回収された沈砂は一般に産業廃棄物として取り扱われるので、その処分コストが膨大となり問題となっている。   By the way, in recent years, regulations concerning waste have become stricter, and since the sand collected from the sand basin is generally handled as industrial waste, the disposal cost becomes enormous.

しかしながら、沈砂を洗浄して夾雑物を除去すれば、該沈砂を産業廃棄物ではなく、再生資源として再利用することができるが、従来の沈砂処理装置では洗浄後の沈砂には、若干ではあるが依然としてし渣も含み、かつ含水率も高く、他の工程を経て含水率を低下させなければ、さらには粒径を揃えなければ再生資源として採用することができないという問題があった。   However, if the sand is washed to remove impurities, the sand can be reused as a recycled resource instead of industrial waste. However, in conventional sand settling equipment, there is a slight amount of sand that has been washed. However, there is still a problem that it still contains residue and has a high water content, and if it is not reduced through other steps, it cannot be adopted as a recycled resource unless the particle size is uniform.

本発明は、上記従来の沈砂処理の有する問題点に鑑み、沈砂を洗浄によって夾雑物を除去するとともに、洗浄後の沈砂の粒径を揃えて、かつ一定の含水率以下として排出し、沈砂及び砂利を再生資源として再利用できるようにした回転ドラム式沈砂分級機を提供することを目的とする。   In view of the problems of the conventional sand settling treatment described above, the present invention removes impurities by washing the settling sand, and also makes the particle size of the set sand after washing uniform and discharges it below a certain moisture content. An object of the present invention is to provide a rotary drum type sedimentation classifier capable of reusing gravel as a recycled resource.

上記目的を達成するため、本発明の回転ドラム式沈砂分級機は、篩い機能を有し、内周面に搬送板を、外周に螺旋状のスクリュー羽根をそれぞれ形成し、始端に設けた開口部から沈砂を供給し、終端の開口部から篩い機能によって洗浄沈砂を分離した砂利及びし渣を排出するようにした回転ドラムを、固定ドラム内に回転可能に配設し、かつ、固定ドラムの回転ドラムの終端側に風力分離室を形成し、該風力分離室内に、回転ドラムの終端の開口部に対向して、砂利を分別するための隙間を介在させてし渣収容ドラムを配設し、回転ドラム内の空気をし渣収容ドラムに接続した空気吸込管を介して排気することによって搬送沈砂の含水率を低下、乾燥させ、回転ドラムの篩い目幅よりも粒径が小さい洗浄沈砂を回転ドラム外へ分離して、前記螺旋状のスクリュー羽根によって搬送、排出するようにし、前記搬送板によって搬送され、終端の開口部から排出される砂利とし渣とを、空気供給管からし渣収容ドラムに向けて噴射され、前記空気吸込管を介して排気される噴射空気による空気流によって、その比重差を利用して前記隙間とし渣収容ドラムとに分別排出するようにしたことを特徴とする。 In order to achieve the above object, the rotary drum type sand settling machine of the present invention has a sieving function, and has an opening provided at the starting end with a conveying plate on the inner peripheral surface and a helical screw blade on the outer periphery. supplying grit from the rotating drum so as to discharge the gravel and Shi residue separating the washed grit by sieving function from the opening end, rotatably disposed within the stationary drum, and the rotation of the fixing drum A wind separation chamber is formed on the end side of the drum, and a residue storage drum is disposed in the wind separation chamber with a gap for separating gravel facing the opening at the end of the rotating drum, The air in the rotating drum is discharged and exhausted through the air suction pipe connected to the residue storage drum to reduce the moisture content of the transported sediment, dry it, and rotate the washed sediment with a particle size smaller than the sieve drum width of the rotating drum. separated to drum out, the Transported by the screw blades of the spiral, so as to discharge the conveyed by the conveying plate, and a residue and gravel is discharged from the opening end, is injected toward the residue accommodating the drum from the air supply pipe, the air According to the present invention , the air flow by the jet air exhausted through the suction pipe is used to separate and discharge the gap into the residue storage drum using the difference in specific gravity.

この場合において、回転ドラム内の空気を吸い込み、その排気の一部を、空気供給管から噴射させる空気流通機構を配設することができる。 In this case, the suction air in the rotary drum, a portion of the exhaust of its may be disposed an air circulation mechanism for ejecting from the air supply pipe.

本発明の回転ドラム式沈砂分級機によれば、沈砂を所定の含水率まで低下させることができるとともに、簡易に沈砂の粒径を揃えて排出することができるので、洗浄沈砂、砂利を資源として有効に再利用でき、かつその処理費用も低減化できる。 According to the rotary drum the sand classifier of the present invention, it is possible to lower the sand to a predetermined water content, can be discharged by aligning the particle size of the sand in a simple, washed sand, gravel as resources It can be effectively reused and its processing cost can be reduced.

特に、回転ドラムの回転にて篩い分けられてきた砂利とし渣とを、空気流により確実に排出することができるとともに、砂利とし渣との分別も簡易に行うことができる。 In particular, gravel and residue that have been sifted by the rotation of the rotating drum can be reliably discharged by an air flow, and can be easily separated from gravel and residue.

以下、本発明の回転ドラム式沈砂分級機の実施の形態を、図面に基づいて説明する。   DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a rotary drum type sand setter according to the present invention will be described below with reference to the drawings.

図１に、本発明の回転ドラム式沈砂分級機の一実施例を示す。
この回転ドラム式沈砂分級機Ａは、下水処理場等の沈砂池内から回収され、ポンプ圧送された沈砂を、洗浄沈砂、砂利、し渣に分別して排出するようにするもので、フレーム８に固定した円筒形の固定ドラム２と、該固定ドラム内に回転可能に挿通し、かつ内部に供給される沈砂を、その粒径により分別しながら搬送する篩い機能及び搬送機能を有するようにした円筒形の回転ドラム１とより構成し、該回転ドラム１内を搬送される沈砂の含水率を低下するように乾燥させるための排気機構と、この乾燥され、攪拌される沈砂に対し、回転ドラムの出口付近にて空気流によって、砂利とし渣とをその比重差を利用して分別排出する分別機能とを備えるようにしている。 FIG. 1 shows an embodiment of the rotary drum type sand settling machine of the present invention.
This rotary drum type sand setter A is used to separate the sand collected from the settling basin such as a sewage treatment plant and pumped into washed sand, gravel, and sediment, and is fixed to the frame 8. Cylindrical fixed drum 2 and a cylindrical shape that has a sieving function and a transport function for transporting the fixed sand passing through the fixed drum while being separated by the particle size. And an exhaust mechanism for drying so as to reduce the moisture content of the sedimentation sand transported in the revolution drum 1, and an outlet of the revolution drum for the dried and agitated sedimentation sand. It is provided with a separation function that separates and discharges gravel and residue using the difference in specific gravity by air flow in the vicinity.

沈砂池内から回収された沈砂を、特に限定されるものではないが、例えば、図１に示すように、沈砂投入シュート３を経て供給するようにした円筒形の回転ドラム１は、フレーム８に固定された円筒形の固定ドラム２内に回転可能に配設する。
この回転ドラム１は、特に限定されるものではないが、例えば、回転ドラム１内を貫通するように配設した軸５をフレーム８に突設した軸受５２、５３にて回転可能に支持し、この軸の一端側に取り付けた動力伝達機構、特に限定されるものではないが、例えば、プーリー、ギア等５１と、フレーム８に固定したサイクロ減速機等の動力源６に取り付けたプーリー、ギア等６１との間を、ベルト、チェン等にて連繋して回転ドラム１を比較的低速で、或いは可変調速的に回転駆動するようにする。 For example, as shown in FIG. 1, a cylindrical rotary drum 1 that is supplied through a sand set-in chute 3 is fixed to a frame 8. The cylindrical fixed drum 2 is rotatably arranged.
The rotating drum 1 is not particularly limited. For example, the shaft 5 disposed so as to penetrate the rotating drum 1 is rotatably supported by bearings 52 and 53 protruding from the frame 8. A power transmission mechanism attached to one end of the shaft, which is not particularly limited, for example, a pulley, a gear, etc. 51 and a pulley, a gear, etc. attached to a power source 6 such as a cyclo reducer fixed to the frame 8 The rotary drum 1 is linked with the belt 61 by a belt, a chain or the like so as to be driven to rotate at a relatively low speed or a modulation speed.

また、この回転ドラム１は、特に限定されるものではないが、例えば、パンチングメタル等を用い、沈砂を選別する粒径となる孔径の篩い孔（図示省略）を多数穿設し、回転ドラム１を回転させることで篩い機能を持たせ、これにより篩い孔より比較的粒径の小さな洗浄沈砂を回転ドラム１外に排出するようする。
さらに、この回転ドラム１には、その内周面側に該回転ドラム１内に供給される沈砂を攪拌しつつ、反供給側へ搬送又は移動させるようにした搬送板１１、１１（図示の実施例では２枚）を、回転ドラムの内周面から中心に向かうようにして突設し、さらには、該搬送板１１の表面には、図５に示すように、搬送板１１の表面に対し斜め方向に複数の前方搬送凸起１１ａを配設し、搬送板１１の回転にて沈砂の攪拌を行いつつ前方搬送凸起１１ａにて該沈砂を前方方向へ移動（搬送）できるようにするとともに、外周面には所要ピッチで螺旋状にスクリュー羽根１２を突設する。
これにより、回転ドラム１より篩い分けられた比較的粒径の小さな洗浄沈砂を、固定ドラム２との間に形成された洗浄沈砂搬送路１Ｒ内をスクリュー羽根１２により、洗浄沈砂排出シュート２１側へ搬送するようにする。 The rotating drum 1 is not particularly limited. For example, a punching metal or the like is used, and a large number of sieve holes (not shown) having a particle diameter for selecting the sedimentation are formed. By rotating the slab, the sieving function is provided, and thereby, the washed sedimentation sand having a relatively smaller particle diameter than the sieving hole is discharged out of the rotating drum 1.
Further, the rotary drum 1 has conveying plates 11 and 11 (illustrated in the figure) that are configured to convey or move the settling sand supplied into the rotary drum 1 to the non-feed side while stirring on the inner peripheral surface side thereof. 2 in the example) projecting from the inner peripheral surface of the rotating drum toward the center, and further, on the surface of the transport plate 11, as shown in FIG. A plurality of forward conveying protrusions 11a are arranged in an oblique direction so that the sand can be moved (conveyed) forward by the forward conveying protrusions 11a while stirring the sand by rotation of the conveying plate 11. The screw blades 12 are provided on the outer peripheral surface in a spiral manner at a required pitch.
As a result, the washed sand settling having a relatively small particle size screened from the rotary drum 1 is moved to the washed sand settling discharge chute 21 side by the screw blade 12 in the washed sand settling conveyance path 1R formed between the fixed drum 2 and the sand. Transport it.

固定ドラム２の、回転ドラム１の終端部には、砂利とし渣とを分別するための風力分離室Ｒを形成し、この風力分離室Ｒ内に、詳しくは回転ドラム１の終端側に穿設した開口部１Ｈと対向するようにして回転ドラム側を開口したし渣収容ドラム４をステー４１を介して取り付け、これにより回転ドラム１の開口部１Ｈより吹き出されるし渣を受け止めるようにする。
なお、この回転ドラム１の終端面とし渣収容ドラム４との間には、開口部１Ｈよりし渣と共に吹き出される砂利を、比重差を利用してし渣と分別するための隙間を介在するようにする。 A wind separation chamber R for separating gravel and residue is formed at the end of the rotating drum 1 of the fixed drum 2, and is drilled in the wind separation chamber R, specifically at the end of the rotation drum 1. The residue drum 4 is opened through the stay 41 so that the rotating drum side is opened so as to face the opening 1H, and the residue discharged from the opening 1H of the rotating drum 1 is received.
A gap is provided between the end surface of the rotary drum 1 and the residue storage drum 4 for separating the gravel blown together with the residue from the opening 1H from the residue using the specific gravity difference. Like that.

また、固定ドラム２の終端側下部には、前記洗浄沈砂排出シュート２１に隣接して砂利排出シュート２２と、し渣収容ドラム４に接続するようにしてし渣排出シュート２３とを配設する。これにより、回転ドラム１内に供給される沈砂を、篩い分けられた洗浄沈砂と砂利とし渣とを分離して排出できるようにする。   Further, a gravel discharge chute 22 and a residue discharge chute 23 connected to the residue storage drum 4 are disposed adjacent to the washing sand settling discharge chute 21 at the lower end side of the fixed drum 2. As a result, the settling sand supplied into the rotary drum 1 can be discharged by separating the washed settling sand and the gravel into slag.

また、回転ドラム１内に供給される沈砂の含水率を低下するようにして乾燥させるための排気機能は、回転ドラム１内の空気を排気させることにより行う。これは、特に限定されるものではないが、例えば、ブロア７に空気供給管７１及び空気吸込管７２を接続し、この一方の空気供給管７１を、前記回転ドラム１内を挿通して先端部を開口部１Ｈの近傍になるようにして、回転ドラム１内を攪拌しつつ、乾燥し、搬送されてきたし渣、砂利をこの空気圧にて開口部１Ｈ外へ吹き飛ばすようにするとともに、他方の空気吸込管７２は固定ドラム２の外側を経てし渣収容ドラム４内に達するようにし、これにより、し渣収容ドラム４内及び開口部１Ｈを経て回転ドラム１内の空気を吸い込むようにし、回転ドラム１内を搬送板１１にて攪拌されつつ搬送される沈砂を乾燥するようにする。
ブロア７に空気供給管７１を接続する際、管７３の先端を二股に分岐し、この各分岐管７１、７４にそれぞれ開閉弁７５、７６を配設し、この一方の開閉弁７６を備えた分岐管を空気供給管７１とし、開閉弁７５を備えた分岐管７４は大気中に開放し排気を行うようにする。 In addition, the exhaust function for drying so as to reduce the moisture content of the sand sediment supplied into the rotary drum 1 is performed by exhausting the air in the rotary drum 1. This is not particularly limited, but, for example, an air supply pipe 71 and an air suction pipe 72 are connected to the blower 7, and the one air supply pipe 71 is inserted into the rotary drum 1 to be connected to the tip portion. In the vicinity of the opening 1H, the inside of the rotary drum 1 is stirred and dried, and the residue and gravel that have been conveyed are blown out of the opening 1H by this air pressure, and the other air The suction pipe 72 passes through the outside of the fixed drum 2 and reaches the residue storage drum 4, thereby sucking the air in the rotation drum 1 through the residue storage drum 4 and the opening 1H. The settling sand transported while being agitated by the transport plate 11 is dried.
When the air supply pipe 71 is connected to the blower 7, the tip of the pipe 73 is bifurcated, and the branch pipes 71 and 74 are provided with on-off valves 75 and 76, respectively. The branch pipe is an air supply pipe 71, and the branch pipe 74 provided with the on-off valve 75 is opened to the atmosphere to exhaust.

なお、上記のように構成する回転ドラム式沈砂分級機Ａは単独にても使用することができるが、例えば、沈砂処理のシステムとして、特に限定されるものではないが、例えば、図２に示すように、構成して採用することができる。
この沈砂処理システムは、下水処理場等の沈砂池内（図示省略）から回収された沈砂混合水を、汚砂洗浄機Ｂへ供給し、ここで所要の洗浄を行った後、沈砂をスクリューコンベア等の沈砂掻揚機Ｃを経て掻き揚げ、この沈砂Ｓを切り替え可能としたシュートＣ１又はＣ２を経て本発明の回転ドラム式沈砂分級機Ａへ、又は直接沈砂貯留ホッパＤへ供給するようにして使用する。 In addition, although the rotating drum type sand settling machine A configured as described above can be used alone, for example, the sand settling system is not particularly limited, for example, as shown in FIG. Thus, it can be configured and employed.
This sand settling system supplies the settling water collected from the settling basin (not shown) such as a sewage treatment plant to the sewage washing machine B. It is used by being fed to the rotary drum type sand setter A of the present invention or directly to the sand settling hopper D through the chute C1 or C2 that can be switched. To do.

次に、本発明の回転ドラム式沈砂分級機の作用について説明する。
沈砂池等からポンプ圧送された沈砂は、回転する回転ドラム１へ直接又は沈砂投入シュート３を経て供給するとともに、ブロア７を駆動することにより空気吸込管７２を経てし渣収容ドラム４、開口部１Ｈを経て回転ドラム１内の空気を吸い込むようにする。また、この回転ドラム１が回転すると搬送板１１も共に回転して回転ドラム内の沈砂は、回転ドラムの周回方向に掻き揚げられ、ドラム内頂部から落下するようにして攪拌される。このとき、回転ドラム１内を流通する乾燥用空気と接触して乾燥され、所定の含水率まで低下するようになるとともに、該回転ドラム１の回転による攪拌と、ドラム内頂部から落下により、沈砂中の回転ドラムの篩い孔の孔径よりも小なる沈砂がこの篩い孔から回転ドラム外部へ排出するようになって篩い分けられる。 Next, the operation of the rotary drum type sand settling machine of the present invention will be described.
The sedimentation pump pumped from a sedimentation basin or the like is supplied to the rotating drum 1 directly or via the sedimentation chute 3 and the blower 7 is driven to drive the residue containing drum 4 and the opening through the air suction pipe 72. The air in the rotary drum 1 is sucked through 1H. Further, when the rotating drum 1 rotates, the conveying plate 11 also rotates, and the sand settling in the rotating drum is lifted up in the rotating direction of the rotating drum and stirred so as to fall from the top of the drum. At this time, it is dried in contact with the drying air that circulates in the rotary drum 1 and decreases to a predetermined moisture content. Sedimentation that is smaller than the diameter of the sieving hole of the rotating drum inside is discharged from the sieving hole to the outside of the rotating drum and sieved.

この篩い分けられた比較的粒子の小さな沈砂は、回転ドラム１の回転により固定ドラム内周の洗浄沈砂搬送路１Ｒ内を回転するスクリュー羽根１２により洗浄沈砂排出シュート２１側へ搬送され、該洗浄沈砂搬送路１Ｒの終端部に配設された洗浄沈砂排出シュート２１より外部へ排出される。   The sieved sand with relatively small particles is conveyed to the washing sand settling discharge chute 21 side by the screw blade 12 rotating in the washing sand settling passage 1R on the inner periphery of the fixed drum by the rotation of the rotary drum 1, and the washing sand settling It is discharged to the outside from a washing sand discharge chute 21 disposed at the end of the conveyance path 1R.

また、回転ドラム内を攪拌され、乾燥されつつ搬送されてきた、沈砂より篩い分けられた砂利、し渣は、空気供給管７１より噴射される空気流（空気圧）にて、回転ドラム端部の開口部１Ｈより風力分離室Ｒ内へ噴出される。このとき、篩いにかけられて選別された比較的大きな粒状の砂利とし渣は、さらにこの空気圧にてその比重差にて分けられて、比重の重い砂利は空気圧にても吹き飛ばされることなく、開口部１Ｈのほぼ直下下方位置に落下して砂利排出シュート２２から外部へ排出され、比重の軽いし渣は、空気圧にて吹き飛ばされるようにしてし渣収容ドラム４に収容され、かつし渣排出シュート２３より外部へ排出される。   In addition, gravel and residue that have been agitated in the rotating drum and conveyed while being dried and sieved from the settling sand are collected at the end of the rotating drum by the air flow (air pressure) injected from the air supply pipe 71. It is ejected into the wind separation chamber R from the opening 1H. At this time, the relatively large granular gravel and sediment sorted by sieving are further divided by the specific gravity difference by this air pressure, gravel with heavy specific gravity is not blown even by the air pressure, the opening portion It falls to a position almost directly below 1H and is discharged from the gravel discharge chute 22 to the outside, and the residue with light specific gravity is stored in the residue storage drum 4 so as to be blown off by air pressure, and the residue discharge chute 23 More discharged outside.

このようにして、回転ドラム式沈砂分級機Ａ内に供給される沈砂は、回転ドラム内を搬送される工程で分別、乾燥され、沈砂と砂利とし渣とが個別的に排出されるので、沈砂の処理が簡易に、連続的に行われるとともに、沈砂はコンクリート用砂、埋め立て用砂、その他の資源として、また砂利はコンクリート用骨材として再利用可能となる。さらには一般廃棄物として廃棄することも可能となり、処理費用が低廉化することができる。   In this way, the settling sand supplied into the rotary drum type sand setter A is separated and dried in the process of being transported in the rotary drum, and the settling sand and gravel are separately discharged. The sand is reusable as concrete sand, landfill sand, other resources, and gravel as concrete aggregate. Furthermore, it can be discarded as general waste, and the processing cost can be reduced.

以上、本発明の回転ドラム式沈砂分級機について、実施例に基づいて説明したが、本発明は上記実施例に記載した構成に限定されるものではなく、その趣旨を逸脱しない範囲において適宜その構成を変更することができるものである。   As mentioned above, although the rotary drum-type sand settling machine of the present invention has been described based on the embodiments, the present invention is not limited to the configurations described in the above-described embodiments, and the configurations thereof are appropriately made without departing from the spirit thereof. Can be changed.

本発明の回転ドラム式沈砂分級機は、回転ドラムの回転による沈砂の搬送時に篩い分けられて沈砂の分級と、排気による含水率の低下とを同時に行って排出するという特性を有していることから、沈砂分級の用途に好適に用いることができるほか、例えば、下水処理の沈砂集中処理や建設骨材の沈砂再利用設備の用途にも用いることができる。   The rotary drum type sand settling machine of the present invention has a characteristic that it is sieved during conveyance of the settling sand by the rotation of the rotating drum, and the settling of the settling sand and the reduction of the moisture content by exhausting are performed simultaneously and discharged. Therefore, it can be suitably used for sand sediment classification, and can also be used for, for example, concentrated sedimentation treatment for sewage treatment and sand recycle equipment for construction aggregates.

本発明の回転ドラム式沈砂分級機の一実施例を示す縦断面図である。It is a longitudinal cross-sectional view which shows one Example of the rotating drum type sand settling machine of this invention. 同回転ドラム式沈砂分級機を沈砂の処理設備に組み込んで使用する沈砂処理システムの一例を示す説明図である。It is explanatory drawing which shows an example of the sand-settling processing system which incorporates and uses the rotary drum type sand-settling machine in the sand-settling processing equipment. 同回転ドラム式沈砂分級機の要部の拡大縦断面図である。It is an expanded longitudinal cross-sectional view of the principal part of the rotation drum type sand settling machine. 同側面縦断面図である。It is the same side surface longitudinal cross-sectional view. 搬送板の正面図である。It is a front view of a conveyance board.

Ａ 回転ドラム式沈砂分級機
Ｒ 風力分離室
１ 回転ドラム
１１ 搬送板
１２ スクリュー羽根
１Ｈ 開口部
１Ｒ 洗浄沈砂搬送路
２ 固定ドラム
２１ 洗浄沈砂排出シュート
２２ 砂利排出シュート
２３ し渣排出シュート
３ 沈砂投入シュート
４ し渣収容ドラム
５ 軸
６ 動力源
７ ブロア
７１ 空気供給管
７２ 空気吸込管
８ 砂利排出シュート A Rotating drum type sand settling machine R Wind separation chamber 1 Rotating drum 11 Conveying plate 12 Screw blade 1H Opening 1R Washing sand settling passage 2 Fixed drum 21 Washing sand settling chute 22 Gravel discharge chute 23 Screen residue discharging chute 3 Sand settling chute 4 Sludge storage drum 5 shaft 6 Power source 7 Blower 71 Air supply pipe 72 Air suction pipe 8 Gravel discharge chute

Claims (2)

篩い機能を有し、内周面に搬送板を、外周に螺旋状のスクリュー羽根をそれぞれ形成し、始端に設けた開口部から沈砂を供給し、終端の開口部から篩い機能によって洗浄沈砂を分離した砂利及びし渣を排出するようにした回転ドラムを、固定ドラム内に回転可能に配設し、かつ、固定ドラムの回転ドラムの終端側に風力分離室を形成し、該風力分離室内に、回転ドラムの終端の開口部に対向して、砂利を分別するための隙間を介在させてし渣収容ドラムを配設し、回転ドラム内の空気をし渣収容ドラムに接続した空気吸込管を介して排気することによって搬送沈砂の含水率を低下、乾燥させ、回転ドラムの篩い目幅よりも粒径が小さい洗浄沈砂を回転ドラム外へ分離して、前記螺旋状のスクリュー羽根によって搬送、排出するようにし、前記搬送板によって搬送され、終端の開口部から排出される砂利とし渣とを、空気供給管からし渣収容ドラムに向けて噴射され、前記空気吸込管を介して排気される噴射空気による空気流によって、その比重差を利用して前記隙間とし渣収容ドラムとに分別排出するようにしたことを特徴とする回転ドラム式沈砂分級機。 It has a sieving function, a conveying plate is formed on the inner peripheral surface, and a spiral screw blade is formed on the outer periphery. Sand is supplied from the opening provided at the start end, and the washed sand is separated from the opening at the end by the sieving function. A rotating drum adapted to discharge the gravel and residue is disposed in the fixed drum so as to be rotatable , and a wind separation chamber is formed on the terminal end side of the rotating drum of the fixed drum. Opposite the opening at the end of the rotating drum, through a gap for separating gravel, a residue storage drum is disposed, and the air in the rotation drum is removed via an air suction pipe connected to the residue storage drum. reducing the water content of the transport sand by evacuating Te, dried, the sieve washed sand particle size is smaller than the width of the rotary drum separates the rotating drum outside, conveyed by the spiral screw blade, discharging the way, the Carried by Okuita, a residue and gravel is discharged from the opening end, it is injected toward the residue accommodating the drum from the air supply pipe, an airflow due to the injection air exhausted through the air suction pipe The rotary drum type sand settling machine is characterized by utilizing the difference in specific gravity to separate and discharge the gap into the residue storage drum . 回転ドラム内の空気を吸い込み、その排気の一部を、空気供給管から噴射させる空気流通機構を配設したことを特徴とする請求項１記載の回転ドラム式沈砂分級機。 The air in the rotary drum suction, a portion of the exhaust of its rotary drum type sand classifier according to claim 1, characterized in that disposed an air circulation mechanism for ejecting from the air supply pipe.
JP2004191714A 2004-06-29 2004-06-29 Rotating drum type sand settling machine Expired - Fee Related JP4536438B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103394406A (en) * 2013-08-22 2013-11-20 长沙有色冶金设计研究院有限公司 Drum sieving scrubbing machine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012041008A1 (en) * 2010-09-29 2012-04-05 Zhao Fuhe Three-product sealed spiral dense medium separator
US9202503B2 (en) 2013-01-15 2015-12-01 HGST Netherlands B.V. Magnetic media with a low molecular weight lubricating layer for use in head/media contact detection
CN113510065B (en) * 2021-04-27 2022-10-28 义乌市子鱼创意设计有限公司 Sand and stone cleaning and screening device for building
CN114308617B (en) * 2022-01-05 2023-09-12 新疆汉块建设工程有限公司 Efficient sand screening device for construction site and application method of efficient sand screening device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000157890A (en) * 1998-11-26 2000-06-13 Nakaya Jitsugyo Kk Adherent mud cleaning device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5830633Y2 (en) * 1980-12-06 1983-07-06 株式会社日本製鋼所 Rotating drum type sieving device
JPH07132245A (en) * 1993-11-10 1995-05-23 Niimiya Shoko:Kk Washing machine for granular materials, such as sand and soil, and its washing method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000157890A (en) * 1998-11-26 2000-06-13 Nakaya Jitsugyo Kk Adherent mud cleaning device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103394406A (en) * 2013-08-22 2013-11-20 长沙有色冶金设计研究院有限公司 Drum sieving scrubbing machine
CN103394406B (en) * 2013-08-22 2015-05-27 长沙有色冶金设计研究院有限公司 Drum sieving scrubbing machine

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