JP2007029957A - Press-forming device of construction sludge or the like - Google Patents

Press-forming device of construction sludge or the like Download PDF

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JP2007029957A
JP2007029957A JP2005212532A JP2005212532A JP2007029957A JP 2007029957 A JP2007029957 A JP 2007029957A JP 2005212532 A JP2005212532 A JP 2005212532A JP 2005212532 A JP2005212532 A JP 2005212532A JP 2007029957 A JP2007029957 A JP 2007029957A
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length
pressure
raw material
cylinder
kneaded
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Norio Enkawa
憲夫 圓川
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Sumiyoshi Heavy Industries Co Ltd
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Sumiyoshi Heavy Industries Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a press-forming device of construction sludge or the like which can be small-sized by reducing the pressing length of a screw as compared with the conventional art, and prevents degradation of the quality such as hardness of a kneaded stuff (a raw material). <P>SOLUTION: In the press-forming device, a kneaded stuff such as construction sludge fed from a raw material charging port 35 provided to a cylindrical body 34 is press-formed by a pressing screw 33 stored in the cylindrical body 34, and a pressed stuff is extruded from a pressed stuff discharge port 47 of a lid plate 46 provided to the tip of the cylindrical body 34. For the dimension of a pressing unit for pressing the kneaded stuff to the required hardness, the pressing length (L) from the lid plate 46 at the tip of the cylindrical body 34 to the raw material charging port 35 of the cylindrical body 34 is set to be not less than the length (L1) for one pitch of a spiral blade 39 of the pressing screw 33, and not more than the length for three pitches. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、工事現場で発生する掘削汚泥や廃棄物焼却処理場で発生する焼却灰等（以下、建設汚泥等という）に所定の処理を加え、道路補修等に用いる建設資材として再生する技術に用いられる建設汚泥等の加圧成形装置に関するものである。     The present invention is a technique for adding a predetermined treatment to excavation sludge generated at a construction site or incineration ash generated at a waste incineration plant (hereinafter referred to as construction sludge, etc.) and regenerating it as a construction material used for road repair or the like. The present invention relates to a pressure forming apparatus such as construction sludge used.

従来、工事現場で発生する建設汚泥や廃棄物焼却処理場で発生する焼却灰等は多量に発生するにも拘わらず有効に再利用されておらず、地盤の埋立用に使用する程度であった。そこで、本出願人は、この問題を解決するため、先に掘削物の破砕装置（特許文献１）を提案した。この特許文献１に係る破砕装置を用いることで、建設汚泥に、高分子改良材、石灰またはフライアッシュ等を混合した公知の改良材からなる固化材を混入させて、これらの混練物を粒状に変え、建設資材等として再利用することが可能となった。本出願人は、特許文献１の装置の後工程にさらに所定の処理装置を組み合わせることで、前記の粒状体と、無機性の残渣と、不純物を含むＲＰＦ焼却灰とを、再度混練機にて混練した後、加圧成形することにより比較的太くて短い棒状のブロックを多数生成し、これを１日ないし数日養生したてさらに小石大に破砕し、これを道路補修その他の建設資材の骨材として使用できるようにした一連のシステムについて実用化している。   Conventionally, construction sludge generated at construction sites and incineration ash generated at waste incineration plants have not been effectively reused despite being generated in large quantities, and only used for land reclamation. . Therefore, in order to solve this problem, the present applicant has previously proposed a crushing device for excavated material (Patent Document 1). By using the crushing apparatus according to Patent Document 1, a solidifying material made of a known improving material mixed with a polymer improving material, lime, fly ash, or the like is mixed into construction sludge, and these kneaded materials are granulated. It can be changed and reused as construction materials. The present applicant combines the above-mentioned granular material, inorganic residue, and RPF incinerated ash containing impurities with a kneader again by combining a predetermined processing device with the subsequent process of the device of Patent Document 1. After kneading, press molding produces many relatively thick and short bar-shaped blocks, which are cured for one to several days and then crushed into small pebbles, which are used for road repair and other construction materials. A series of systems that can be used as materials has been put into practical use.

前記システムにおける加圧成形装置は、筒体内に加圧スクリューを収納して構成されており、筒体に設けられた原料投入口から注入された混練物（原料）をさらに圧密して所定の固さに押し固め、かつ前工程で混練物（原料）巻き込まれた空気を排出することで、混練物（原料）の品質の向上と均一化を図り、建設資材としての性能を向上させるものである。本発明の対象は、この加圧成形装置を改良することにある。
特開平８−５２３７７号公報 The pressure molding apparatus in the system is configured by accommodating a pressure screw in a cylinder, and further compresses the kneaded material (raw material) injected from the raw material inlet provided in the cylindrical body to a predetermined solidity. By pressing and solidifying and discharging the air entrained in the kneaded material (raw material) in the previous process, the quality of the kneaded material (raw material) is improved and uniformed, and the performance as a construction material is improved. . The object of the present invention is to improve the pressure molding apparatus.
JP-A-8-52377

従来の建設汚泥等の加圧成形装置では、加圧スクリューが収められた筒体に設けられている原料投入口から筒体先端までの加圧長が長くて、このために加圧成形装置が大型化し、さらに清掃に手間取るという問題があった。しかし、従来は、加圧成形装置を小型化することについて特別の提案はなされておらず、さらに、加圧成形装置が大型化する原因の一つである、前記加圧長さについても検討されていない。     In a conventional pressure molding apparatus such as construction sludge, the pressure length from the raw material inlet to the cylinder tip provided in the cylinder containing the pressure screw is long, and for this reason, the pressure molding apparatus is There was a problem of increasing the size and taking time for cleaning. However, conventionally, no special proposal has been made for downsizing the pressure molding apparatus, and the pressure length, which is one of the causes of the increase in size of the pressure molding apparatus, has also been studied. Not.

本発明者は、加圧成形装置の小型化について種々研究する中で、加圧スクリューによる加圧長について検討した。すなわち、従来、加圧スクリューによる加圧長の長さは、混練物（原料）を圧密する上で、どの程度の長さが必要なのか、特別の技術的な根拠に基づいて設計されておらず、加圧長が長い方がより効率的に混練物（原料）を加圧できるであろうという常識的判断と、装置全体の大きさとの兼ね合いから決められているのが現状である。そして、現在稼動している加圧成形装置において、加圧スクリューによる加圧長を形成する、筒体先端の蓋板から筒体の原料投入口までの長さは、加圧スクリューの螺旋羽根の６ピッチ分程度の長さに設けられているのが現状であり、加圧成形装置は、その分の長さが必要である。     The present inventor studied the length of pressure applied by a pressure screw during various researches on downsizing of a pressure molding apparatus. That is, conventionally, the length of the pressure applied by the pressure screw has not been designed on the basis of a special technical basis for what length is necessary for compacting the kneaded material (raw material). However, the current situation is that it is determined based on a common sense that the longer pressurization length can pressurize the kneaded material (raw material) more efficiently and the size of the entire apparatus. In the pressure molding apparatus currently in operation, the length from the cover plate at the tip of the cylinder to the raw material inlet of the cylinder, which forms the pressure length by the pressure screw, is the length of the spiral blade of the pressure screw. At present, it is provided with a length of about 6 pitches, and the pressure molding apparatus needs to have that length.

本発明者は建設汚泥等の加圧成形装置の小型化について研究するなかで、加圧スクリューによる加圧長さに着目し、この長さをもっと短縮できないかについて検討した。そして、この加圧長を長短に種々に設定して混練物（原料）を押し出す試験を繰返し、それぞれにより押出される混練物（原料）の固さと、原料に残留する空気（気泡）の多さ等について分析した。その結果、加圧スクリューの加圧長を従来より短く設定しても混練物（原料）の固さ等の品質を低下させることなく、装置の小型化が可能であるとの知見を得た。本発明は、前記の知見に基づいて提案するものである。
While studying downsizing of a pressure molding apparatus such as construction sludge, the present inventor focused on the pressure length by the pressure screw and examined whether this length could be further shortened. And the test which extrudes a kneaded material (raw material) by setting this pressurization length to various lengths is repeated, the hardness of the kneaded material (raw material) extruded by each and the large amount of air (bubbles) remaining in the raw material Etc. were analyzed. As a result, it was found that the apparatus can be downsized without deteriorating the quality such as the hardness of the kneaded material (raw material) even if the pressure length of the pressure screw is set shorter than before. The present invention proposes based on the above findings.

前記の課題を有利に解決するために、本発明は次のように構成する。     In order to advantageously solve the above-described problems, the present invention is configured as follows.

第１の発明は、筒体３４に設けた原料投入口３５から供給口された建設汚泥等の混練物を、前記筒体３４に収納された加圧スクリュー３３により加圧成形し、筒体３４先端に設けた蓋板４６の生成物排出口４７から加圧生成物を押出す加圧成形装置において、混練物を必要な固さに加圧するための加圧部寸法として、筒体３４先端の蓋板４６から、筒体３４の原料投入口３５までの加圧長さ（Ｌ）を、加圧スクリュー３３の螺旋羽根３９の１ピッチ分の長さ（Ｌ１）以上、３ピッチ分の長さ以下に設けたことを特徴とする。     In the first invention, a kneaded material such as construction sludge supplied from a raw material inlet 35 provided in the cylinder 34 is pressure-molded by a pressure screw 33 accommodated in the cylinder 34, and the cylinder 34 is obtained. In the pressure molding apparatus for extruding the pressurized product from the product discharge port 47 of the lid plate 46 provided at the tip, the size of the pressurizing part for pressing the kneaded product to the required hardness is set at the tip of the cylinder 34. The pressurization length (L) from the cover plate 46 to the raw material inlet 35 of the cylinder 34 is not less than the length (L1) of one pitch of the spiral blade 39 of the pressurizing screw 33 and the length of three pitches. It is provided as follows.

第２の発明は、第１の発明において、螺旋羽根３９の１ピッチ分の長さ（Ｌ１）が、該螺旋羽根３９の直径の略２分の１に設けてあると共に、加圧長さ（Ｌ）の範囲において、加圧スクリュー３３の回転軸３８は直線部３６と先端円錐部３７とからなり、筒体３４も筒体直線部４４と筒体円錐部４５とからなり、加圧スクリュー３３の直線部３６に設けてある螺旋羽根３９の２ピッチ分の長さが、筒体３４の筒体直線部４４の長さと略均しいように設けてあることを特徴とする。     According to a second invention, in the first invention, the length (L1) corresponding to one pitch of the spiral blade 39 is provided at approximately one half of the diameter of the spiral blade 39, and the pressurization length ( In the range of L), the rotation shaft 38 of the pressure screw 33 is composed of a straight portion 36 and a tip cone portion 37, and the cylinder 34 is also composed of a cylinder straight portion 44 and a cylinder cone portion 45. The length of two pitches of the spiral blade 39 provided in the straight part 36 is provided so as to be substantially equal to the length of the cylindrical straight part 44 of the cylindrical body 34.

本発明に係る建設汚泥等の加圧成形装置によると、筒体３４先端の蓋板４６から、筒体３４の原料供給口３５までの加圧長さ（Ｌ）を、加圧スクリュー３３の螺旋羽根３９の１ピッチ分の長さ（Ｌ１）以上、３ピッチ分の長さ以下とすることで、混練物（原料）を必要な固さに加圧するために必要且つ最小限の寸法に設けることができ、生成物の品質を低下させることなく、加圧成形装置の小型化が可能となった。さらに前記の構成としたことにより、筒体３４内に建設汚泥等が詰まるおそれを少なくでき、筒体内の清掃回数を少なくできるうえ、その清掃も容易且つ安全に行うことができたものである。
According to the pressure molding apparatus such as construction sludge according to the present invention, the pressure length (L) from the cover plate 46 at the tip of the cylinder 34 to the raw material supply port 35 of the cylinder 34 is set to the spiral of the pressure screw 33. By providing the blade 39 with a length of one pitch (L1) or more and a length of three pitches or less, the kneaded material (raw material) is provided in the minimum and necessary dimensions to pressurize to the required hardness. Therefore, it is possible to reduce the size of the pressure molding apparatus without deteriorating the quality of the product. Further, by adopting the above-described configuration, the possibility of clogging construction sludge and the like in the cylinder 34 can be reduced, the number of cleanings in the cylinder can be reduced, and the cleaning can be performed easily and safely.

次に、本発明を図示の実施形態に基づいて詳細に説明する。     Next, the present invention will be described in detail based on the illustrated embodiment.

図１は、建設汚泥等の混練装置と加圧成形装置と連設して示す建設汚泥等の混練、加圧成形システムの縦断正面説明図、図２は、図３のＡ−Ａ線に沿う混練装置の縦断正面説明図、図３は、図２の平面図、図４は、図２のＢ−Ｂ断面図、図５は、図２のＣ−Ｃ断面図、図６は、加圧成形装置の縦断正面説明図である。   FIG. 1 is a longitudinal explanatory front view of a kneading and pressure forming system for construction sludge and the like, which are shown connected to a kneading device for construction sludge and a pressure forming device, and FIG. 2 is along the line AA in FIG. FIG. 3 is a plan view of FIG. 2, FIG. 4 is a sectional view taken along line BB in FIG. 2, FIG. 5 is a sectional view taken along line CC in FIG. 2, and FIG. It is a vertical front explanatory drawing of a shaping | molding apparatus.

図１に示すように、建設汚泥等の混練、加圧成形システムは、建設汚泥等の混練装置１の下部に加圧成形装置２を連設して構成される。混練装置１には、図示省略する前工程で生成された建設汚泥の粒状体（原料）が投入され、この混練装置１にて水や固化助剤を加えて固さを調整しながら必要な粘性を付与するように混練される。混練された混練物（原料）は、続いて加圧成形装置２に供給される。混練物（原料）は、この加圧成形装置２にて圧密されて必要な固さに練り固められ、かつ、前工程で混練時に巻き込まれた気泡などの空気を排出したうえ太い棒状で連続して押し出す。こうして円柱形状で順次送り出される混練生成物は、下方で待ち受けるベルトコンベヤ３に落下する際に自重で折れ曲がって切離され、比較的短い太い棒状のブロックとなって前記ベルトコンベヤ３で堆積場に運ばれる。堆積場にて１日ない数日間乾燥養生したうえ、破砕機にて小石状に破砕して、道路補修等の建設資材の骨材などとして使用される。   As shown in FIG. 1, a kneading and pressure forming system for construction sludge and the like is configured by connecting a pressure forming device 2 to a lower part of a kneading device 1 for construction sludge and the like. The kneading apparatus 1 is charged with the sludge granular material (raw material) generated in the previous step (not shown), and the viscosity required by adjusting the hardness by adding water or a solidification aid in the kneading apparatus 1. Kneaded to give The kneaded product (raw material) is subsequently supplied to the pressure molding apparatus 2. The kneaded material (raw material) is compacted by the pressure molding apparatus 2 and is kneaded to a required hardness, and air such as bubbles entrained at the time of kneading in the previous process is discharged and continuously in a thick bar shape. Push out. The kneaded product that is sequentially sent out in a cylindrical shape is bent and separated by its own weight when it falls on the belt conveyor 3 waiting on the lower side, and is transported to the deposition site by the belt conveyor 3 as a relatively short thick bar-like block. It is. It is dried and cured for several days in a sedimentation site, and then crushed into pebbles with a crusher and used as an aggregate for construction materials such as road repairs.

混練装置１は、図１、図２に示すように、脚４上に下段混練装置５と上段混練装置６を上下２段に重ねて構成されている。下段混練装置５は、支持台６上に設けられた下段底板７に下段ケース８が支持されると共に、下段底板７の上面中心部に下段ロータ１０を設けて構成される。下段ロータ１０は、下段底板７に設置されたケース回転型のロータ回転用モータ１１によって駆動される。ロータ回転用モータ１１は軸受け部１２を介して軸部が下段底板７に固着され、回転ケース１３側が回転するようになっている。そして、この回転ケース１３に腕部材１４を介して下段ロータ１０を連結することにより、ロータ回転用モータ１１によって下段ロータ１０が回転する。下段ロータ１０の外面には回転側混練棒１５が上下複数段に設けてあり、これらで下段混練室１７が構成されている。   As shown in FIGS. 1 and 2, the kneading apparatus 1 is configured by stacking a lower kneading apparatus 5 and an upper kneading apparatus 6 on the legs 4 in two upper and lower stages. The lower kneading apparatus 5 includes a lower case 8 supported by a lower bottom plate 7 provided on a support base 6 and a lower rotor 10 provided at the center of the upper surface of the lower bottom plate 7. The lower rotor 10 is driven by a case rotating type rotor rotating motor 11 installed on the lower bottom plate 7. The shaft of the rotor rotating motor 11 is fixed to the lower bottom plate 7 via a bearing portion 12 so that the rotating case 13 side rotates. Then, the lower rotor 10 is rotated by the rotor rotating motor 11 by connecting the lower rotor 10 to the rotating case 13 via the arm member 14. On the outer surface of the lower rotor 10, rotation-side kneading bars 15 are provided in a plurality of upper and lower stages, and a lower kneading chamber 17 is constituted by these.

下段ケース８の内側には固定側混練棒１６が設けられている。すなわち、下段ケース８には開口部１８（図４に示す）が形成されていて、その一側にブラケット１９によって垂直軸２０が設けられ、この垂直軸２０によって混練棒取り付け用開閉扉２１が回動自在に支持されていて、この開閉扉２１の内側面に固定側混練棒１６が取り付けてある。したがって、混練棒取り付け用開閉扉２１を開閉するとき、開口部１８を介して固定側混練棒１６は下段ケース８の内外に移動でき、これにより下段ケース８内の清掃に便利である。なお、装置の稼動時においては、混練棒取り付け用開閉扉２１で開口部１８を閉じ、ロック部材２２でロックする。固定側混練棒１６は回転側混練棒１５と干渉しないように上下に位置をずらして複数設けてある。したがって、ロータ回転用モータ１１によって回転側混練棒１５が正回転または逆回転を繰り返すことで、固定側混練棒１６との間で、下段ケース８内に投入された粒状体（原料）は効率的に混練される。下段底板７には、混練された原料の排出口２３が形成されている。この排出口２３は、下段ケース８の外側に設けたゲート開閉用シリンダー２４で動作するゲート２５によって開閉される。   A fixed-side kneading rod 16 is provided inside the lower case 8. That is, an opening 18 (shown in FIG. 4) is formed in the lower case 8, and a vertical shaft 20 is provided on one side of the lower case 8 by a bracket 19, and the kneading rod attaching opening / closing door 21 is rotated by the vertical shaft 20. The fixed side kneading rod 16 is attached to the inner side surface of the open / close door 21. Therefore, when opening and closing the kneading rod attachment opening / closing door 21, the fixed-side kneading rod 16 can be moved into and out of the lower case 8 through the opening 18, which is convenient for cleaning the lower case 8. During the operation of the apparatus, the opening 18 is closed by the kneading rod attaching door 21 and locked by the lock member 22. A plurality of fixed-side kneading bars 16 are provided with their positions shifted vertically so as not to interfere with the rotating-side kneading bars 15. Therefore, when the rotation-side kneading rod 15 repeats normal rotation or reverse rotation by the rotor rotating motor 11, the granular material (raw material) charged into the lower case 8 between the fixed-side kneading rod 16 is efficient. Kneaded. The lower bottom plate 7 is formed with a kneaded raw material outlet 23. The discharge port 23 is opened and closed by a gate 25 that is operated by a gate opening / closing cylinder 24 provided outside the lower case 8.

上段混練装置６の構成は、下段混練装置５と略同じ構成である。すなわち、上段混練装置６における上段底板２６にはロータ回転用モータ１１によって回転駆動する回転側混練棒１５が取り付けられた上段ロータ２７が配置され、上段ケース２８には固定側混練棒１６を設けて上段混練室４８が構成され、さらに、上段ケース２８に設けたゲート開閉用シリンダー２４で動作するゲート２５によって上段底板２６の排出口２９が開閉されるように設けられている。   The configuration of the upper kneading device 6 is substantially the same as that of the lower kneading device 5. That is, the upper stage plate 26 in the upper stage kneading apparatus 6 is provided with the upper stage rotor 27 to which the rotary side kneading bar 15 is rotatably driven by the rotor rotating motor 11, and the upper case 28 is provided with the fixed side kneading bar 16. An upper kneading chamber 48 is configured, and the discharge port 29 of the upper bottom plate 26 is opened and closed by a gate 25 that is operated by a gate opening / closing cylinder 24 provided in the upper case 28.

したがって、上段ケース２８の上部の開口部３０から投入された粒状体（原料）は、加水ノズル３１より水等を加えながら上段ロータ２７の回転により所定時間混練された後、ゲート開閉用シリンダー２４で動作するゲート２５で開口された排出口２９から、下段混練装置５に落下される。そして、下段混練装置５にてさらに混練された後、下段底板７の排出口２３に接続された排出筒３２から、加圧成形装置２に供給される。   Therefore, the granular material (raw material) introduced from the opening 30 at the upper portion of the upper case 28 is kneaded for a predetermined time by the rotation of the upper rotor 27 while adding water or the like from the water nozzle 31, and is then transferred by the gate opening / closing cylinder 24. The product is dropped into the lower kneading apparatus 5 from the discharge port 29 opened by the gate 25 that operates. Then, after further kneading in the lower kneading device 5, the pressure is fed to the pressure molding device 2 from the discharge cylinder 32 connected to the discharge port 23 of the lower bottom plate 7.

下段混練装置５の排出筒３２は、加圧成形装置２の加圧スクリュー３３が収容された筒体３４に形成された混練物（原料）の供給口３５に近接配置されている。図6に示すように加圧スクリュー３３は、直線部３６と先端円錐部３７を有する回転軸３８に螺旋羽根３９を固着して構成されている。回転軸３８の基端には駆動軸４０が連結されていて、該駆動軸４０は、カップリング４１を介して駆動モータ４２の出力軸４３に連結されている。筒体３４は、加圧スクリュー３３の直線部３６と先端円錐部３７に対応して筒体直線部４４と筒体円錐部４５を具備している。また、筒体３４の先端は、複数の生成物排出口４７を有する蓋板４６で閉鎖されている。また、筒体３４は、基台４９に設けられた脚部材５０にて支持されていると共に、駆動軸４０は脚部材５０に設けられた軸受け部材５２にて支持されており、駆動モータ４２も脚部材５０に支持されている。   The discharge cylinder 32 of the lower kneading apparatus 5 is disposed close to a kneaded material (raw material) supply port 35 formed in a cylinder 34 in which the pressure screw 33 of the pressure molding apparatus 2 is accommodated. As shown in FIG. 6, the pressure screw 33 is configured by fixing a spiral blade 39 to a rotating shaft 38 having a straight portion 36 and a tip conical portion 37. A drive shaft 40 is connected to the base end of the rotary shaft 38, and the drive shaft 40 is connected to an output shaft 43 of the drive motor 42 via a coupling 41. The cylindrical body 34 includes a cylindrical linear portion 44 and a cylindrical conical portion 45 corresponding to the linear portion 36 and the tip conical portion 37 of the pressure screw 33. The tip of the cylinder 34 is closed with a lid plate 46 having a plurality of product discharge ports 47. The cylindrical body 34 is supported by a leg member 50 provided on the base 49, the drive shaft 40 is supported by a bearing member 52 provided on the leg member 50, and the drive motor 42 is also provided. It is supported by the leg member 50.

したがって、混練装置１における下段混練装置５の排出筒３２から加圧成形装置２における投入口３５に供給された混練物（原料）は、筒体３４の内部において加圧スクリュー３３の回転により前方に強制的に押出されながら圧密され、蓋板４６に開設された複数の生成物排出口４７から連続的に押出される。この圧密過程において、前工程において混練された混練物（原料）は、さらに必要な固さに押しかためられると共に、混練物（原料）に含まれる気泡などの空気が追い出されて高品質でかつ均一な生成物となる。   Therefore, the kneaded material (raw material) supplied from the discharge tube 32 of the lower kneading device 5 in the kneading device 1 to the charging port 35 in the pressure forming device 2 is moved forward by the rotation of the pressure screw 33 inside the cylinder 34. It is consolidated while being forced to be extruded, and is continuously extruded from a plurality of product discharge ports 47 provided in the lid plate 46. In this compaction process, the kneaded material (raw material) kneaded in the previous step is further pushed to the required hardness, and air such as bubbles contained in the kneaded material (raw material) is expelled and has high quality. A homogeneous product results.

本発明では、加圧成形装置２において、筒体３４の先端に設けた蓋板４６から、筒体３４に設けた供給口３５までの加圧長さ（Ｌ）寸法を、加圧スクリュー３３の螺旋羽根３９の１ピッチ分の長さ（Ｌ１）以上で、３ピッチ分の長さ以下の範囲に収めたことを特徴とするものである。この加圧長さ（Ｌ）寸法は、加圧スクリュー３３の長さを短縮することによる加圧成形装置２の小型化と、混練物（原料）を必要な固さに圧密するために螺旋羽根３９の必要なピッチ数との両方の条件を満たす最少の寸法であり、本発明者による繰返し試験の結果から導かれた寸法である。   In the present invention, in the pressure molding apparatus 2, the pressure length (L) dimension from the cover plate 46 provided at the tip of the cylindrical body 34 to the supply port 35 provided in the cylindrical body 34 is determined by the pressure screw 33. The spiral blade 39 is characterized by being contained in a range not less than the length of one pitch (L1) and not more than the length of three pitches. This pressure length (L) dimension is a spiral blade for reducing the size of the pressure molding device 2 by shortening the length of the pressure screw 33 and compacting the kneaded material (raw material) to the required hardness. This is the smallest dimension that satisfies both the required number of pitches of 39 and derived from the results of repeated tests by the present inventors.

本発明者は、螺旋羽根３９の１ピッチ分の長さ（Ｌ１）を、該螺旋羽根３９の直径の略２分の１の寸法に設けた加圧成形装置２を製作した。さらに、この加圧成形装置２において、筒体３４の先端に設けた蓋板４６から、筒体３４に設けた原料供給口３５までの加圧長さ（Ｌ）寸法を、［１］１ピッチ分の長さ（Ｌ１）以下とした場合、［２］１ピッチ分の長さ（Ｌ１）とした場合、［３］２ピッチ分の長さとした場合、［４］３ピッチ分の長さとした場合、［５］４ピッチ分の長さとした場合、［６］５ピッチ分の長さとした場合、［７］６ピッチ分の長さとした場合、［８］７ピッチ分以上の長さとした場合、のそれぞれについて、混練物（原料）を加圧スクリュー３３で加圧し、蓋板４６の生成物排出口４７から押出された生成物につき、その固さの度合、空気（気泡）の排出の度合を調べた。   The inventor manufactured the pressure molding apparatus 2 in which the length (L1) corresponding to one pitch of the spiral blade 39 is set to approximately one-half the diameter of the spiral blade 39. Further, in this pressure molding apparatus 2, the pressure length (L) dimension from the cover plate 46 provided at the tip of the cylinder 34 to the raw material supply port 35 provided in the cylinder 34 is set to [1] 1 pitch. When the length is less than or equal to the length of the minute (L1), [2] When the length is 1 pitch (L1), [3] When the length is 2 pitches, [4] The length is 3 pitches [5] When the length is 4 pitches, [6] When the length is 5 pitches, [7] When the length is 6 pitches, [8] When the length is 7 pitches or more , The kneaded material (raw material) is pressurized with the pressure screw 33, and the degree of hardness and the degree of discharge of air (bubbles) for the product extruded from the product discharge port 47 of the cover plate 46 I investigated.

その結果、加圧長さ（Ｌ）寸法が、１ピッチ分の長さ（Ｌ１）以下では、生成物排出口４７から押出される生成物には押し固めの加圧力が不足していて、所期の固さが得られなかった。さらに、加圧長さ（Ｌ）寸法を、１ピッチ分の長さ（Ｌ１）にしたところ、所期の固さに近い生成物が得られた。さらに、加圧長さ（Ｌ）寸法を２ピッチ分の長さとしたところ、１ピッチ分の長さ（Ｌ１）の場合よりも、一層所期の固さに近い生成物が得られた。またさらに、加圧長さ（Ｌ）寸法を、図６に示すように筒体直線部４４の長さと回転軸の直線部３６の螺旋羽根３９の２ピッチ分の長さが略均しいように設けて混練物（原料）を押出したところ、所期の固さに最も近い理想状態の生成物が得られた。その後、さらに３ピッチ分の長さ、４ピッチ分の長さ、５ピッチ分の長さと、６ピッチ分の長さと、加圧長さ（Ｌ）寸法を順次伸ばして混練物（原料）を押出した。その結果、このように加圧長さ（Ｌ）を伸ばしたことによっても加圧された生成物の固さは、２ピッチ分の加圧長さ（Ｌ）寸法で得られた生成物の固さと殆ど変化がなかった。前記から加圧長さ（Ｌ）寸法を回転軸の直線部３６の螺旋羽根３９の２ピッチ分の長さ寸法を超えて長く伸ばしても、所期の固さの生成物を得る点からは殆ど無用であることが分った。   As a result, when the pressurization length (L) dimension is equal to or less than the length (L1) for one pitch, the product extruded from the product discharge port 47 is insufficient in compression pressure. The firmness of the period was not obtained. Furthermore, when the pressurization length (L) dimension was set to the length (L1) for one pitch, a product close to the desired hardness was obtained. Furthermore, when the pressed length (L) was set to a length corresponding to 2 pitches, a product closer to the desired hardness was obtained than in the case of a length corresponding to 1 pitch (L1). Furthermore, as shown in FIG. 6, the pressurization length (L) dimension is set so that the length of the cylindrical straight portion 44 and the length of two pitches of the spiral blade 39 of the straight portion 36 of the rotating shaft are substantially uniform. When the kneaded product (raw material) was provided and extruded, an ideal product closest to the desired hardness was obtained. Thereafter, the length of 3 pitches, the length of 4 pitches, the length of 5 pitches, the length of 6 pitches, and the pressurization length (L) are successively extended to extrude the kneaded material (raw material). did. As a result, the hardness of the product pressed by extending the pressurization length (L) in this way is that of the product obtained with the pressurization length (L) dimension of two pitches. There was little change. From the point that the product of the desired hardness is obtained even if the pressurized length (L) is extended longer than the length of two pitches of the spiral blade 39 of the linear portion 36 of the rotating shaft. It turned out to be almost useless.

前記の試験結果に基づいて、本発明では、筒体３４に設けた原料供給口３５までの加圧長さ（Ｌ）寸法を、図６のように筒体直線部４４の長さと螺旋羽根３９の２ピッチ分の長さが略均しいように設けたもので、さらに、回転軸３８の先端円錐部３７にも１ピッチの螺旋羽根３９が設けられることを含めて、加圧長さ（Ｌ）を最長３ピッチ分としている。   Based on the above test results, in the present invention, the pressurization length (L) dimension to the raw material supply port 35 provided in the cylinder 34 is set to the length of the cylinder linear portion 44 and the spiral blade 39 as shown in FIG. The two-pitch lengths are provided so as to be substantially uniform, and further, the pressure length (L ) Is a maximum of 3 pitches.

なお、図１、図６のように加圧スクリュー３３により加圧成形された混練物（原料）は、蓋板４６の生成物排出口４７に続くガイド筒体５２から連続して押出される。そして、下方で待ち受けるベルトコンベヤ３に落下する際に自重で折れ曲がって切離され、所定太さの比較的短い多数の太い棒状ブロックとなって堆積場に運ばれる。堆積場にて１日ない数日間乾燥養生したうえ、破砕機にて小石状に破砕して、道路補修等の建設資材に使用される。   1 and 6, the kneaded material (raw material) press-molded by the pressure screw 33 is continuously extruded from the guide cylinder 52 following the product discharge port 47 of the cover plate 46. And when falling on the belt conveyor 3 waiting on the lower side, it is bent and separated by its own weight, and is transported to the deposition site as a large number of relatively short bar-shaped blocks having a predetermined thickness. After drying and curing for several days in a sedimentation site, it is crushed into pebbles with a crusher and used for construction materials such as road repairs.

本実施形態に係る建設汚泥等の加圧成形装置によると、筒体３４の先端に設けられた生成物排出口４７を有する蓋板４６から、筒体３４に設けられた原料供給口３５までの加圧長さ（Ｌ）を、加圧スクリュー３３の螺旋羽根３９の１ピッチ分の長さ（Ｌ１）以上、３ピッチ分の長さ以下とすることで、混練物（原料）を必要な固さに加圧するために必要且つ最小限に設けたので、混練物（原料）の固さ等の品質を低下させることなく、装置の小型化が可能であると共に、筒体内の清掃も容易且つ安全に行うことができる。     According to the pressure molding apparatus such as construction sludge according to this embodiment, from the cover plate 46 having the product discharge port 47 provided at the tip of the cylinder 34 to the raw material supply port 35 provided in the cylinder 34. By setting the pressurization length (L) to the length (L1) of one pitch of the spiral blade 39 of the pressurization screw 33 or less and the length of three pitches or less, the kneaded material (raw material) is required to be solid. Since it is necessary and minimally provided for pressurization, it is possible to reduce the size of the device without deteriorating the quality of the kneaded material (raw material), etc., and to clean and clean the cylinder easily and safely. Can be done.

本発明の実施形態を示し、建設汚泥等の混練装置と加圧成形装置と連設して示す建設汚泥等の混練、加圧成形システムの縦断正面説明図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal front explanatory view of a construction sludge kneading and pressure forming system according to an embodiment of the present invention, which is shown connected to a construction sludge kneading device and a pressure forming device. 図３のＡ−Ａ線に沿う混練装置の縦断正面説明図である。It is a vertical front explanatory drawing of the kneading apparatus along the AA line of FIG. 図２の平面図である。FIG. 3 is a plan view of FIG. 2. 図２のＢ−Ｂ断面図である。It is BB sectional drawing of FIG. 図２のＣ−Ｃ断面図である。It is CC sectional drawing of FIG. 加圧成形装置の縦断正面説明図である。It is a vertical front explanatory drawing of a pressure molding apparatus.

符号の説明Explanation of symbols

１ 混練装置
２ 加圧成形装置
３ ベルトコンベヤ
４ 脚
５ 下段混練装置
６ 上段混練装置
７ 下段底板
８ 下段ケース
１０ 下段ロータ
１１ ロータ回転用モータ
１２ 軸受け部
１３ 回転ケース
１４ 腕部材
１５ 回転側混練棒
１６ 固定側混練棒
１７ 下段混練室
１８ 開口部
１９ ブラケット
２０ 垂直軸
２１ 混練棒取り付け用開閉扉
２２ ロック部材
２３ 排出口
２４ ゲート開閉用シリンダー
２５ ゲート
２６ 上段底板
２７ 上段ロータ
２８ 上段ケース
２９ 排出口
３０ 開口部
３１ 加水ノズル
３２ 排出筒
３３ 加圧スクリュー
３４ 筒体
３５ 原料投入口（供給口）
３６ 直線部
３７ 先端円錐部
３８ 回転軸
３９ 螺旋羽根
４０ 駆動軸
４１ カップリング
４２ 駆動モータ
４３ 出力軸
４４ 筒体直線部
４５ 筒体円錐部
４６ 蓋板
４７ 生成物排出口
４８ 上段混練室
４９ 基台
５０ 脚部材
５１ ガイド筒体
５２ 軸受け部材 DESCRIPTION OF SYMBOLS 1 Kneading apparatus 2 Pressure molding apparatus 3 Belt conveyor 4 Leg 5 Lower kneading apparatus 6 Upper kneading apparatus 7 Lower stage bottom plate 8 Lower stage case 10 Lower stage rotor 11 Motor for rotor rotation 12 Bearing part 13 Rotating case 14 Arm member 15 Rotation side kneading rod 16 Fixed side kneading rod 17 Lower kneading chamber 18 Opening 19 Bracket 20 Vertical shaft 21 Opening / closing door for kneading rod attachment 22 Lock member 23 Discharge port 24 Gate opening / closing cylinder 25 Gate 26 Upper bottom plate 27 Upper rotor 28 Upper case 29 Discharge port 30 Opening Section 31 Water nozzle 32 Discharge tube 33 Pressure screw 34 Tube 35 Raw material inlet (supply port)
36 Linear portion 37 Tip cone portion 38 Rotating shaft 39 Spiral blade 40 Drive shaft 41 Coupling 42 Drive motor 43 Output shaft 44 Cylindrical linear portion 45 Cylindrical cone portion 46 Cover plate 47 Product discharge port 48 Upper kneading chamber 49 Base 50 Leg member 51 Guide cylinder 52 Bearing member

Claims (2)

筒体３４に設けた原料投入口３５から供給口された建設汚泥等の混練物を、前記筒体３４に収納された加圧スクリュー３３により加圧成形し、筒体３４先端に設けた蓋板４６の生成物排出口４７から加圧生成物を押出す加圧成形装置において、混練物を必要な固さに加圧するための加圧部寸法として、筒体３４先端の生成物排出口４７を有する蓋板４６から、筒体３４の原料投入口３５までの加圧長さ（Ｌ）を、加圧スクリュー３３の螺旋羽根３９の１ピッチ分の長さ（Ｌ１）以上、３ピッチ分の長さ以下に設けたことを特徴とする建設汚泥等の加圧成形装置。     A kneaded material such as construction sludge supplied from a raw material inlet 35 provided in the cylinder 34 is pressure-molded by a pressure screw 33 accommodated in the cylinder 34, and a lid plate provided at the tip of the cylinder 34 In the pressure molding apparatus for extruding the pressurized product from the product discharge port 47 of 46, the product discharge port 47 at the tip of the cylindrical body 34 is used as a pressurizing part size for pressing the kneaded product to a required hardness. The pressurization length (L) from the cover plate 46 to the raw material inlet 35 of the cylinder 34 is not less than the length (L1) of one pitch of the spiral blade 39 of the pressurizing screw 33 and the length of three pitches. A pressure molding apparatus for construction sludge, etc., provided below. 螺旋羽根３９の１ピッチ分の長さ（Ｌ１）が、該螺旋羽根３９の直径の略２分の１に設けてあると共に、加圧長さ（Ｌ）の範囲において、加圧スクリュー３３の回転軸３８は直線部３６と先端円錐部３７とからなり、筒体３４も筒体直線部４４と筒体円錐部４５とからなり、加圧スクリュー３３の直線部３６に設けてある螺旋羽根３９の２ピッチ分の長さが、筒体３４の筒体直線部４４の長さと略均しいように設けてあることを特徴とする請求項１記載の建設汚泥等の加圧成形装置。
The length (L1) corresponding to one pitch of the spiral blade 39 is provided approximately half of the diameter of the spiral blade 39, and the rotation of the pressure screw 33 within the range of the pressurization length (L). The shaft 38 is composed of a straight portion 36 and a tip conical portion 37, and the cylindrical body 34 is also composed of a cylindrical straight portion 44 and a cylindrical conical portion 45, and the spiral blade 39 provided on the straight portion 36 of the pressure screw 33. The pressure forming apparatus for construction sludge and the like according to claim 1, wherein the length corresponding to two pitches is provided so as to be substantially equal to the length of the cylindrical straight portion 44 of the cylindrical body.
JP2005212532A 2005-07-22 2005-07-22 Press-forming device of construction sludge or the like Pending JP2007029957A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0724599A (en) * 1993-07-08 1995-01-27 Hitachi Zosen Corp Kneaded extrusion device for ash solidification treatment
JPH08206634A (en) * 1995-02-03 1996-08-13 Hoshizaki Electric Co Ltd Garbage treatment machine
JP2000006139A (en) * 1998-06-26 2000-01-11 Lion Corp Detergent processing extrusion granulating machine, and manufacture of granular detergent or detergent raw material particle using the machine
JP2001238591A (en) * 2000-02-29 2001-09-04 Osamu Sakai Bread daugh divider

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0724599A (en) * 1993-07-08 1995-01-27 Hitachi Zosen Corp Kneaded extrusion device for ash solidification treatment
JPH08206634A (en) * 1995-02-03 1996-08-13 Hoshizaki Electric Co Ltd Garbage treatment machine
JP2000006139A (en) * 1998-06-26 2000-01-11 Lion Corp Detergent processing extrusion granulating machine, and manufacture of granular detergent or detergent raw material particle using the machine
JP2001238591A (en) * 2000-02-29 2001-09-04 Osamu Sakai Bread daugh divider

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