JP7130914B2 - Rotary sludge dryer - Google Patents

Rotary sludge dryer Download PDF

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JP7130914B2
JP7130914B2 JP2019109328A JP2019109328A JP7130914B2 JP 7130914 B2 JP7130914 B2 JP 7130914B2 JP 2019109328 A JP2019109328 A JP 2019109328A JP 2019109328 A JP2019109328 A JP 2019109328A JP 7130914 B2 JP7130914 B2 JP 7130914B2
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sludge
bowl
screw shaft
rotary
hot air
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JP2020199470A (en
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賢 村岡
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Ishigaki Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/30—Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy

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Description

本発明は、排水処理設備から発生する汚泥処理や、製紙向け汚泥処理などに用いられる汚泥乾燥機において、処理場内で稼働している焼却設備や消化設備、エネルギー供給設備から発生する排熱等を利用した回転型汚泥乾燥機に関する。 The present invention treats sludge generated from wastewater treatment facilities and sludge dryers used for sludge treatment for paper manufacturing. It relates to the rotary sludge dryer used.

従来、排水処理設備等から発生する汚泥は、焼却処理を行う前に、脱水機等で予め脱水し、乾燥機によって乾燥処理されている。
乾燥機は、汚泥を搬送しつつ熱媒体を供給することで汚泥を乾燥させるものが用いられており、特許文献１は、円筒形のケーシング内に設けたシャフトに、全長にわたり螺旋状の送り羽根を取付け、ケーシングの上下に熱媒体入口と熱媒体出口をそれぞれ設けた汚泥乾燥機を開示している。 BACKGROUND ART Conventionally, sludge generated from a wastewater treatment facility or the like is preliminarily dehydrated with a dehydrator or the like and dried with a dryer before being incinerated.
The dryer is used to dry the sludge by supplying a heat medium while conveying the sludge. Patent Document 1 discloses that a shaft provided in a cylindrical casing has a spiral feeding blade over the entire length. , and a heat medium inlet and a heat medium outlet are provided at the top and bottom of the casing, respectively.

実開昭５６－１３３４００号公報Japanese Utility Model Laid-Open No. 56-133400

特許文献１に開示された汚泥乾燥機は、送り羽根によって汚泥を搬送するため、十分に乾燥させるには長い搬送距離を必要としていた。
特許文献１に開示された汚泥乾燥機は、熱媒体を供給するのに個別の熱源が必要となるうえ、汚泥の乾燥は高温で行うため、乾燥に要するエネルギー消費量が大きい。
また、高温（８０℃以上）で乾燥を行うと臭気が発生するため、脱臭設備等を別途必要となる。低温で乾燥を行うと、汚泥流入量の変化に対応できずに乾燥が不十分となる。また、十分な乾燥時間を確保するためには装置を大型化する必要があった。
本発明は、汚泥の搬送時間と転動速度を変化させて、汚泥を乾燥することができる回転型汚泥乾燥機を提供する。 The sludge dryer disclosed in Patent Document 1 transports the sludge by means of the feed blades, and thus requires a long transport distance to sufficiently dry the sludge.
The sludge dryer disclosed in Patent Document 1 requires a separate heat source to supply a heat medium, and sludge drying is performed at a high temperature, so the energy consumption required for drying is large.
In addition, when drying at a high temperature (80° C. or higher), an odor is generated, so a separate deodorizing facility or the like is required. If drying is performed at a low temperature, it will not be possible to respond to changes in the amount of sludge inflow, resulting in insufficient drying. In addition, it was necessary to increase the size of the apparatus in order to secure a sufficient drying time.
The present invention provides a rotary sludge dryer capable of drying sludge by changing the transport time and rolling speed of sludge.

円筒状の円筒ボウルと、円筒ボウル内に配置されたスクリュー軸と、スクリュー軸に巻き掛けたスクリュー羽根と、円筒ボウル内に汚泥を供給する汚泥供給管と、円筒ボウル内に温風を供給する温風供給管と、を備える回転型汚泥乾燥機において、スクリュー軸に接続してスクリュー軸を回転駆動させるスクリュー駆動機と、円筒ボウルに接続してスクリュー軸と逆方向に円筒ボウルを回転駆動させるボウル駆動機と、スクリュー軸の始端部から終端部の間に設けられた複数の供給孔と、を備え、各供給孔は、スクリュー軸内部に形成された温風供給管と連通することで、円筒ボウルとスクリュー軸をそれぞれ別々に駆動させ、汚泥の搬送速度と転動速度を設定できるとともに、汚泥を大きく転動させることができる。 A cylindrical bowl, a screw shaft arranged in the cylindrical bowl, screw blades wound around the screw shaft, a sludge supply pipe that supplies sludge into the cylindrical bowl, and hot air that is supplied into the cylindrical bowl. A rotary sludge dryer comprising a hot air supply pipe, wherein a screw driver is connected to a screw shaft to rotate the screw shaft, and a cylindrical bowl is connected to rotate the cylindrical bowl in a direction opposite to the screw shaft. and a plurality of supply holes provided between the start end and the end of the screw shaft, and each supply hole communicates with a hot air supply pipe formed inside the screw shaft . By driving the cylindrical bowl and the screw shaft separately, the sludge conveying speed and rolling speed can be set , and the sludge can be rolled greatly .

本発明の回転型汚泥乾燥機は、円筒ボウルとスクリュー軸にそれぞれ駆動機を連結し、別々に駆動させることで、汚泥の搬送速度と転動速度を設定できる。
スクリュー軸の駆動機で搬送速度を調整できるため、回転型汚泥乾燥機に供給する温風は高温である必要はなく、回転型汚泥乾燥機を配置する処理場で発生した排熱で十分に乾燥できる。
排熱を５０～７０℃の温風に変換して回転型汚泥乾燥機に供給すると、乾燥に伴う臭気の発生を低減させることができる。 In the rotary sludge dryer of the present invention, the sludge conveying speed and the sludge rolling speed can be set by connecting drivers to the cylindrical bowl and the screw shaft, respectively, and driving them separately.
Since the conveying speed can be adjusted by the screw shaft drive, the hot air supplied to the rotary sludge dryer does not need to be high temperature, and the exhaust heat generated at the treatment plant where the rotary sludge dryer is installed is sufficient for drying. can.
By converting the exhaust heat into hot air of 50 to 70° C. and supplying it to the rotary sludge dryer, it is possible to reduce the odor that accompanies drying.

円筒ボウルの駆動機で転動速度を調整できるため、搬送中の汚泥を破砕・攪拌可能となる。円筒ボウルの回転数を速めると、汚泥が大きく転動し、破砕・撹拌が促進されて乾燥効率が向上する。 Since the rolling speed can be adjusted by the drive of the cylindrical bowl, it is possible to crush and agitate the sludge during transportation. When the rotation speed of the cylindrical bowl is increased, the sludge rolls a lot, which promotes crushing and agitation and improves the drying efficiency.

本発明に係る回転型汚泥乾燥機の断面図である。1 is a cross-sectional view of a rotary sludge dryer according to the present invention; FIG. 本発明の他の実施形態１における回転型汚泥乾燥機の要部断面図である。Fig. 3 is a cross-sectional view of a main part of a rotary sludge dryer according to another embodiment 1 of the present invention; 本発明の他の実施形態２における回転型汚泥乾燥機の要部断面図である。Fig. 10 is a cross-sectional view of a main part of a rotary sludge dryer according to another embodiment 2 of the present invention; 本発明の他の実施形態３における回転型汚泥乾燥機の要部断面図である。Fig. 10 is a cross-sectional view of a main part of a rotary sludge dryer according to another embodiment 3 of the present invention; 本発明の実施例における回転型汚泥乾燥機のフロー図である。1 is a flow diagram of a rotary sludge dryer according to an embodiment of the present invention; FIG.

図１は、本発明に係る回転型汚泥乾燥機の断面図である。
本発明に係る回転型汚泥乾燥機１は、円筒状の円筒ボウル２と、円筒ボウル２内に配置されたスクリュー軸３と、スクリュー軸３に巻き掛けたスクリュー羽根４と、円筒ボウル２に接続して回転駆動させるボウル駆動機５と、スクリュー軸３に接続して回転駆動させるスクリュー駆動機６と、円筒ボウル２とスクリュー軸３を回転自在に支持するフレーム７ａ、７ｂと、円筒ボウル２を覆うケーシング８とを備える。
円筒ボウル２には、汚泥を供給する汚泥供給管９と、温風を供給する温風供給管１０を連結する。ケーシング８上部に排気管１１を連結し、円筒ボウル２から排出される温風をケーシング８外に排出する。また、ケーシング８下部に排水管１２を連結し、ケーシング８内で結露した水分をケーシング８外に排出する。
ケーシング８の一端には排出口１３を設け、円筒ボウル２から排出された汚泥は排出口１３から回転型汚泥乾燥機１外に排出される。 FIG. 1 is a cross-sectional view of a rotary sludge dryer according to the present invention.
A rotary sludge dryer 1 according to the present invention includes a cylindrical bowl 2, a screw shaft 3 arranged in the cylindrical bowl 2, a screw blade 4 wound around the screw shaft 3, and connected to the cylindrical bowl 2. a screw driver 6 connected to the screw shaft 3 and driven to rotate; frames 7a and 7b rotatably supporting the cylindrical bowl 2 and the screw shaft 3; and a covering casing 8 .
A sludge supply pipe 9 for supplying sludge and a hot air supply pipe 10 for supplying hot air are connected to the cylindrical bowl 2 . An exhaust pipe 11 is connected to the upper portion of the casing 8 to discharge hot air discharged from the cylindrical bowl 2 to the outside of the casing 8 . Also, a drain pipe 12 is connected to the lower part of the casing 8 to discharge the water condensed inside the casing 8 to the outside of the casing 8 .
A discharge port 13 is provided at one end of the casing 8 , and the sludge discharged from the cylindrical bowl 2 is discharged out of the rotary sludge dryer 1 through the discharge port 13 .

円筒ボウル２は始端部に側壁１４を備え、側壁１４には温風供給管１０を連結し、温風を円筒ボウル２内に供給する。円筒ボウル２の終端部は開口１５を有し、円筒ボウル２内に供給された汚泥がスクリュー羽根４で円筒ボウル２終端部へ搬送され、開口１５から排出口１３へ排出される。また、円筒ボウル２内に供給された温風は円筒ボウル２内を通りつつ汚泥を乾燥し、終端部の開口１５を通ってケーシング９に連結した排気管１１から回転型汚泥乾燥機１外に排出される。 The cylindrical bowl 2 has a side wall 14 at its starting end, and a hot air supply pipe 10 is connected to the side wall 14 to supply hot air into the cylindrical bowl 2 . The end portion of the cylindrical bowl 2 has an opening 15 , and the sludge supplied into the cylindrical bowl 2 is conveyed to the end portion of the cylindrical bowl 2 by the screw blades 4 and discharged from the opening 15 to the discharge port 13 . The warm air supplied into the cylindrical bowl 2 dries the sludge while passing through the cylindrical bowl 2, passes through the opening 15 at the terminal end, and exits the rotary sludge dryer 1 from the exhaust pipe 11 connected to the casing 9. Ejected.

円筒ボウル２は、始端部をフレーム７ａに固定する固定ボウル２ａと、終端部をフレーム7ａに回転自在に支持する回転ボウル２ｂとで構成される。固定ボウル２ａと回転ボウル２ｂは摺動自在に接続し、図示しない中間軸受で支持する。 The cylindrical bowl 2 is composed of a fixed bowl 2a whose starting end is fixed to the frame 7a and a rotating bowl 2b whose terminal end is rotatably supported by the frame 7a. The stationary bowl 2a and the rotating bowl 2b are slidably connected and supported by intermediate bearings (not shown).

固定ボウル２ａの上部には汚泥供給管９とホッパー１６を連結し、ホッパー１６から汚泥を供給する。
回転ボウル２ｂは終端部をフレーム７ｂで回転自在に支持しており、回転ボウル２ｂから延設したスプロケットをボウル駆動機５と接続して回転駆動させる。
スクリュー軸３は両端をフレーム７ａ、７ｂで回転自在に支持してあり、フレーム７ｂから延設したスクリュー軸３にスプロケットを設け、スクリュー駆動機６と接続することで回転駆動させる。 A sludge supply pipe 9 and a hopper 16 are connected to the upper portion of the fixed bowl 2a, and sludge is supplied from the hopper 16.
The rotary bowl 2b is rotatably supported at its terminal end by a frame 7b, and a sprocket extending from the rotary bowl 2b is connected to a bowl driving machine 5 and driven to rotate.
Both ends of the screw shaft 3 are rotatably supported by frames 7a and 7b, and the screw shaft 3 extending from the frame 7b is provided with a sprocket and connected to a screw driving machine 6 to be rotationally driven.

スクリュー駆動機６は回転数を低速に調整することで、スクリュー羽根４の搬送速度が低下し、汚泥の滞留時間を長時間に設定することができる。ボウル駆動機５は、回転数を高速に調整すると、汚泥が激しく転動して回転ボウル２ｂ内で撹拌が促進される。回転ボウル２ｂの回転をスクリュー軸３と同方向に回転させても良いが、スクリュー軸３と逆方向に回転させることで、より大きな転動作用をもたらす。 By adjusting the rotational speed of the screw driving machine 6 to a low speed, the conveying speed of the screw blades 4 is reduced, and the retention time of the sludge can be set to a long time. When the rotation speed of the bowl driving machine 5 is adjusted to a high speed, the sludge rolls violently and agitation is promoted in the rotating bowl 2b. The rotary bowl 2b may be rotated in the same direction as the screw shaft 3, but by rotating in the opposite direction to the screw shaft 3, a greater rolling action is achieved.

図２は、本発明の他の実施形態１における回転型汚泥乾燥機の要部断面図である。
図２に示すように、円筒ボウル２は固定ボウル２ａを省略し、側壁１４と回転ボウル２ｂを摺動自在に接続してもよい。このとき側壁１４はフレーム７ａに連結して固定する。汚泥供給管９を側壁１４上部に連結し、温風供給管１０を側壁１４下部に連結しており、側壁１４から汚泥と温風を回転ボウル２ｂ内に供給する。 FIG. 2 is a cross-sectional view of a main part of a rotary sludge dryer according to another embodiment 1 of the present invention.
As shown in FIG. 2, the cylindrical bowl 2 may omit the fixed bowl 2a and slidably connect the side wall 14 and the rotating bowl 2b. At this time, the side wall 14 is connected and fixed to the frame 7a. A sludge supply pipe 9 is connected to the upper portion of the side wall 14, and a hot air supply pipe 10 is connected to the lower portion of the side wall 14, and sludge and hot air are supplied from the side wall 14 into the rotating bowl 2b.

図３は、本発明の他の実施形態２における回転型汚泥乾燥機の要部断面図である。
図２と同様に回転ボウル２ｂのみで構成し、側壁１４より汚泥と温風を供給する。図３では、側壁１４を貫通するスクリュー軸３の内部に汚泥供給管９を形成しており、スクリュー軸３に供給孔１７を設けることで回転ボウル２ｂ内に汚泥を供給する。温風供給管１０は側壁１４下部に連結し、回転ボウル２ｂ内に温風を供給する。 FIG. 3 is a cross-sectional view of a main part of a rotary sludge dryer according to another embodiment 2 of the present invention.
As in FIG. 2, it is composed only of the rotating bowl 2b, and sludge and warm air are supplied from the side wall 14. As shown in FIG. In FIG. 3, the sludge supply pipe 9 is formed inside the screw shaft 3 passing through the side wall 14, and the screw shaft 3 is provided with a supply hole 17 to supply sludge into the rotating bowl 2b. The hot air supply pipe 10 is connected to the lower part of the side wall 14 and supplies hot air into the rotating bowl 2b.

図４は、本発明の他の実施形態３における回転型汚泥乾燥機の要部断面図である。
側壁１４を貫通するスクリュー軸３の内部に温風供給管１０を形成しており、スクリュー軸３に供給孔１７を設けることで回転ボウル２ｂ内に温風を供給する。汚泥供給管９は側壁１４上部に連結し、回転ボウル２ｂ内に汚泥を供給する。図４に示すように、スクリュー軸３は回転ボウル２ｂの終端部まで内部に温風供給管１０を形成し、供給孔１７を複数設けてもよい。 FIG. 4 is a cross-sectional view of a main part of a rotary sludge dryer according to another embodiment 3 of the present invention.
A hot air supply pipe 10 is formed inside the screw shaft 3 passing through the side wall 14, and hot air is supplied into the rotating bowl 2b by providing a supply hole 17 in the screw shaft 3. As shown in FIG. A sludge supply pipe 9 is connected to the upper portion of the side wall 14 and supplies sludge into the rotating bowl 2b. As shown in FIG. 4, the screw shaft 3 may have a hot air supply pipe 10 formed therein up to the terminal end of the rotary bowl 2b, and may be provided with a plurality of supply holes 17. As shown in FIG.

図２～４のように、円筒ボウル２の側壁１４側から汚泥を供給する場合、円筒ボウル２に固定ボウル２ａを設ける必要がなく、側壁１４をフレーム７ａに固定し、回転ボウル２ｂを側壁１４と摺動時自在に接続することで、円筒ボウル２全体を回転して汚泥を搬送することができる。 2 to 4, when sludge is supplied from the side wall 14 side of the cylindrical bowl 2, there is no need to provide the fixed bowl 2a in the cylindrical bowl 2, the side wall 14 is fixed to the frame 7a, and the rotating bowl 2b is attached to the side wall 14 By freely connecting with and slidingly, the entire cylindrical bowl 2 can be rotated to convey the sludge.

図５は、本発明の実施例における回転型汚泥乾燥機のフロー図である。
本発明の回転型汚泥乾燥機１は例えば下水処理場に配置される。下水処理場には、消化槽１０１、焼却設備１０２、発電設備１０３が配置され、それぞれ熱交換器１０４ａ、１０４ｂ、１０４ｃを備える。 FIG. 5 is a flow diagram of a rotary sludge dryer in an embodiment of the invention.
A rotary sludge dryer 1 of the present invention is arranged, for example, in a sewage treatment plant. In the sewage treatment plant, a digestion tank 101, an incineration facility 102, and a power generation facility 103 are arranged, each having heat exchangers 104a, 104b, and 104c.

熱交換器１０４は、高温の熱を脱水ケーキの乾燥に適した温度（５０～７０℃）の温風に変換する。
消化槽１０１の熱交換器１０４ａは、消化槽１０１の加温設備で発生した排熱を温風に変換する。
焼却設備１０２の熱交換器１０４ｂは、焼却で発生した排熱を温風に変換する。
発電設備１０３の熱交換器１０４ｃは、発電で発生した排熱を温風に変換する。
各熱交換器１０４ａ、１０４ｂ、１０４ｃによって変換された温風は、回転型汚泥乾燥機１に送られる。熱交換器１０４は回転型汚泥乾燥機１の温風供給管１０と連結して温風を円筒ボウル２に供給する。 The heat exchanger 104 converts the high-temperature heat into hot air at a temperature (50-70° C.) suitable for drying the dehydrated cake.
The heat exchanger 104a of the digestion tank 101 converts waste heat generated by the heating equipment of the digestion tank 101 into hot air.
The heat exchanger 104b of the incineration equipment 102 converts waste heat generated in the incineration into hot air.
The heat exchanger 104c of the power generation equipment 103 converts exhaust heat generated by power generation into warm air.
The warm air converted by each of the heat exchangers 104a, 104b, 104c is sent to the rotary sludge dryer 1. The heat exchanger 104 is connected to the hot air supply pipe 10 of the rotary sludge dryer 1 to supply hot air to the cylindrical bowl 2 .

下水処理場に流入した汚泥は脱水処理された後、脱水ケーキとして回転型汚泥乾燥機１に送られる。
回転型汚泥乾燥機１は、円筒ボウル２内の脱水ケーキをスクリュー羽根４で搬送すると共に、下水処理場の各設備の熱交換器１０４ａ、１０４ｂ、１０４ｃで変換した温風を円筒ボウル２内に供給し、乾燥処理を施す。 The sludge that has flowed into the sewage treatment plant is dewatered and sent to the rotary sludge dryer 1 as a dehydrated cake.
The rotary sludge dryer 1 transports the dehydrated cake in the cylindrical bowl 2 with the screw blades 4, and converts the warm air with the heat exchangers 104a, 104b, and 104c of each facility of the sewage treatment plant into the cylindrical bowl 2. It is fed and dried.

ここで、汚泥を乾燥させるにあたり、８０℃より高い温度の熱風を用いると、乾燥の際に臭気が発生する。従って、熱交換器１０４は各設備の排熱を５０～７０℃の温風に変換し、回転型汚泥乾燥機１へ供給する。 Here, when hot air having a temperature higher than 80° C. is used to dry the sludge, an odor is generated during drying. Therefore, the heat exchanger 104 converts the exhaust heat of each facility into hot air of 50 to 70° C. and supplies the hot air to the rotary sludge dryer 1 .

回転型汚泥乾燥機１は、ボウル駆動機５とスクリュー駆動機６により、円筒ボウル２とスクリュー軸３を駆動させて汚泥を搬送する。円筒ボウル２とスクリュー軸３の回転速度を調整し、回転型汚泥乾燥機１内での汚泥の滞留時間と転動速度を調整する。 The rotary sludge dryer 1 transports sludge by driving a cylindrical bowl 2 and a screw shaft 3 with a bowl driver 5 and a screw driver 6 . By adjusting the rotation speed of the cylindrical bowl 2 and the screw shaft 3, the retention time and rolling speed of the sludge in the rotary sludge dryer 1 are adjusted.

脱水ケーキは搬送設備への付着等を防止するため、回転型汚泥乾燥機１で含水率をおよそ２０～４０％まで低下させることが望ましい。従って、含水率が高い場合は、スクリュー駆動機６の回転数を下げると共にボウル駆動機５の回転数を上昇させることで、搬送速度を遅くして回転型汚泥乾燥機１での滞留時間を長くすると共に、汚泥を大きく転動させて撹拌・破砕を行うことで脱水ケーキを乾燥する。 In order to prevent the dehydrated cake from adhering to the conveying equipment, etc., it is desirable that the rotary sludge dryer 1 reduces the water content to approximately 20 to 40%. Therefore, when the water content is high, the rotation speed of the screw driving machine 6 is decreased and the rotation speed of the bowl driving machine 5 is increased, thereby slowing down the conveying speed and increasing the residence time in the rotary sludge dryer 1. At the same time, the dehydrated cake is dried by agitating and crushing the sludge by rolling it over a large area.

回転型汚泥乾燥機１で含水率が２０～４０％まで乾燥した脱水ケーキは、排出口１３から排出され、次の工程に搬送される。
回転型汚泥乾燥機１に供給された温風は、排気管１１から排ガスとして排出される。また、回転型汚泥乾燥機１内で脱水ケーキから蒸発した水分はケーシング８内で結露し、排水管１２から排水として排出される。 The dehydrated cake dried to a water content of 20 to 40% by the rotary sludge dryer 1 is discharged from the outlet 13 and conveyed to the next step.
The hot air supplied to the rotary sludge dryer 1 is discharged from the exhaust pipe 11 as exhaust gas. Water evaporated from the dehydrated cake in the rotary sludge dryer 1 condenses in the casing 8 and is discharged from the drain pipe 12 as waste water.

１ 回転型汚泥乾燥機
２ 円筒ボウル
２ａ 固定ボウル
２ｂ 回転ボウル
３ スクリュー軸
４ スクリュー羽根
５ ボウル駆動機
６ スクリュー駆動機
９ 汚泥供給管
１０ 温風供給管
１４ 側壁
１７ 供給孔 1 Rotary sludge dryer 2 Cylindrical bowl 2a Fixed bowl 2b Rotating bowl 3 Screw shaft 4 Screw blade 5 Bowl driver 6 Screw driver 9 Sludge supply pipe 10 Hot air supply pipe 14 Side wall 17 Supply hole

Claims (1)

円筒状の円筒ボウル（２）と、円筒ボウル（２）内に配置されたスクリュー軸（３）と、スクリュー軸（３）に巻き掛けたスクリュー羽根（４）と、円筒ボウル（２）内に汚泥を供給する汚泥供給管（９）と、円筒ボウル（２）内に温風を供給する温風供給管（１０）と、を備える回転型汚泥乾燥機（１）において、
スクリュー軸（３）に接続してスクリュー軸（３）を回転駆動させるスクリュー駆動機（６）と、
円筒ボウル（２）に接続してスクリュー軸（３）と逆方向に円筒ボウル（２）を回転駆動させるボウル駆動機（５）と、
スクリュー軸（３）の始端部から終端部の間に設けられた複数の供給孔（１７）と、を備え、
各供給孔（１７）は、スクリュー軸（３）内部に形成された温風供給管（１０）と連通する
ことを特徴とする回転型汚泥乾燥機。 A cylindrical bowl (2), a screw shaft (3) arranged in the cylindrical bowl (2), a screw blade (4) wound around the screw shaft (3), and a In a rotary sludge dryer (1) comprising a sludge supply pipe (9) that supplies sludge and a hot air supply pipe (10) that supplies hot air into the cylindrical bowl (2) ,
a screw driver (6) connected to the screw shaft (3) to rotationally drive the screw shaft (3);
a bowl driver (5) connected to the cylindrical bowl (2) and rotatingly driving the cylindrical bowl (2) in a direction opposite to the screw shaft (3);
a plurality of supply holes (17) provided between the start end and the end end of the screw shaft (3),
Each supply hole (17) communicates with a hot air supply pipe (10) formed inside the screw shaft (3).
A rotary sludge dryer characterized by:
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JP2004041858A (en) 2002-07-09 2004-02-12 Katsumi Iida Liquid-containing waste treatment plant
JP2006198596A (en) 2005-01-18 2006-08-03 Hiroshi Hasegawa Rotary treatment machine

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JPS5353063A (en) * 1976-10-25 1978-05-15 Shinko Pfaudler Horizontal rotary drying apparatus for water containing particlar substance
JPS6023694U (en) * 1983-07-26 1985-02-18 株式会社クボタ sludge dryer
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JP2002310027A (en) 2001-04-10 2002-10-23 Mitsubishi Heavy Ind Ltd Treating device of moisture and sludge of heavy fuel oil
JP2004041858A (en) 2002-07-09 2004-02-12 Katsumi Iida Liquid-containing waste treatment plant
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