JP5294090B2 - Filter cloth hanging device in filter press - Google Patents
Filter cloth hanging device in filter press Download PDFInfo
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- JP5294090B2 JP5294090B2 JP2010137187A JP2010137187A JP5294090B2 JP 5294090 B2 JP5294090 B2 JP 5294090B2 JP 2010137187 A JP2010137187 A JP 2010137187A JP 2010137187 A JP2010137187 A JP 2010137187A JP 5294090 B2 JP5294090 B2 JP 5294090B2
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- 239000004744 fabric Substances 0.000 title claims description 213
- 238000001914 filtration Methods 0.000 claims description 21
- 238000001514 detection method Methods 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims 1
- 239000011550 stock solution Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000639 Spring steel Inorganic materials 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000010801 sewage sludge Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Filtration Of Liquid (AREA)
Description
この発明は、ろ布を振動させてケーキを剥離する技術に関し、特に簡易な構成でケーキの剥離性を向上させるフィルタープレスにおけるろ布の吊設装置に関する。 The present invention relates to a technology for peeling a cake by vibrating a filter cloth, and particularly to a filter cloth suspending device in a filter press that improves the peelability of a cake with a simple configuration.
従来、前後のフレームに橋架した案内レール上に、その前後面にろ布を張設した多数のろ板を移動自在に並列し、多数のろ板を同時に開閉するようにしたフィルタープレスにおいて、ろ板間に設けた一対のろ布を揺動自在に吊設し、これらのろ布を吊掛した支持バーの下方に加振シャフトを配設し、この加振シャフトに昇降装置と振動装置を設けた技術が特許文献1に開示されている。 Conventionally, in a filter press in which a large number of filter plates with filter cloths stretched on their front and rear surfaces are movably arranged in parallel on guide rails bridged between the front and rear frames, and a number of filter plates are opened and closed simultaneously. A pair of filter cloths provided between the plates are suspended in a swingable manner, and an excitation shaft is disposed below the support bar on which the filter cloths are suspended. An elevator and a vibration device are attached to the excitation shaft. The provided technique is disclosed in Patent Document 1.
また、ろ布を吊掛した支持バーの下方に加振シャフトを配設すると共に、ろ布の下端部に袋部を形成し、ろ板の前後の袋部を合着して重錘を挿入した技術が特許文献2に開示されている。 In addition, a vibration shaft is arranged below the support bar on which the filter cloth is hung, and a bag portion is formed at the lower end of the filter cloth, and a weight is inserted by attaching the bag portions before and after the filter plate. This technique is disclosed in Patent Document 2.
さらに、各ろ板の上部に上方に向けて一対の板バネ部材を固定し、板バネ部材とろ布とを紐状部材により連結して、ろ布をろ板のろ過面沿いに吊設した技術が特許文献3に開示されている。 Furthermore, a technology in which a pair of leaf spring members are fixed upward at the top of each filter plate, the leaf spring member and the filter cloth are connected by a string-like member, and the filter cloth is suspended along the filtration surface of the filter plate. Is disclosed in Patent Document 3.
特許文献1は、ろ板を開板すると、ろ布に付着したケーキ荷重によりろ布が降下して衝撃により剥離する。また、加振シャフトを徐々に上昇させながら振動させると、支持バーと共にろ布は振動させられながら上方に引き上げられ、ろ板にくい込んでいるろ布は上方に張り上げられて、残ケーキの剥離作用を促進する。
しかし、加振シャフトでろ布を押上げることにより、ろ布をろ板の凹凸面から引き離している。多数のろ布を同時に振動させるので、フィルタープレスが大型化すれば、多数のろ布を押上げるために振動装置も大型となり、大きな動力が必要となるという問題があった。
In Patent Document 1, when the filter plate is opened, the filter cloth descends due to the cake load adhering to the filter cloth and peels off by impact. Also, if the vibrating shaft is vibrated while being gradually raised, the filter cloth is lifted upward while being vibrated together with the support bar, and the filter cloth that is difficult to filter is raised upward, and the remaining cake is peeled off. Promote.
However, the filter cloth is pulled away from the uneven surface of the filter plate by pushing up the filter cloth with the vibration shaft. Since a large number of filter cloths are vibrated at the same time, if the filter press is increased in size, the vibration device is also increased in size to push up a large number of filter cloths, which requires a large amount of power.
特許文献2は、ろ板を開板すると、ろ布に付着したケーキ荷重と重錘により、ろ板の凹凸面からろ布が引き離されて降下する。その衝撃により一部ケーキが剥離すると共に、降下時にろ布支持バーがスプリングを圧縮するので、その反発力によりろ布が押上げられ、その衝撃により残ケーキが剥離する。
しかし、ろ布を上下に振動させるだけの作用では、ろ布の目に付着した剥離性の悪いケーキや、厚みの薄いケーキを完全にろ布から剥離することは困難であり、大きな加速度を発生させる振動装置が必要となる。
In Patent Document 2, when the filter plate is opened, the filter cloth is pulled away from the uneven surface of the filter plate due to the cake load and the weight attached to the filter cloth and lowered. Part of the cake is peeled off by the impact, and the filter cloth support bar compresses the spring when lowered, so that the filter cloth is pushed up by the repulsive force, and the remaining cake peels off by the impact.
However, if the filter cloth only vibrates up and down, it is difficult to completely peel off cakes with poor peelability that adhere to the filter cloth or thin cakes from the filter cloth, resulting in large acceleration. A vibrating device is required.
特許文献3は、ろ板を開板すると、ろ板の板バネ部材、紐状部材またはろ布のいずれかに対して振動を付与することにより、振動が板バネ部材で助長されながら、紐状部材を介してろ布がろ板のろ過面沿いに振動する。この振動により、ろ布に付着したケーキの剥離が助長され、円滑にろ布から剥離する。
しかし、ろ板に立設した一対の板バネの振幅が合致していないと互いの振動を打ち消し合い、結果的に振動が小さくなるとともに振動発生時間も短くなる。また、紐状部材には板バネからの引張圧縮応力と、ろ布およびケーキの荷重が掛かるため、大きな強度が必要となり、弾性体で構成することは困難である。さらに、ろ布の下端部をろ板に固定しているため、ろ布の下方は振動の振幅が弱く、剥離性が悪いという問題がある。
Patent Document 3 discloses that when a filter plate is opened, a vibration is promoted by the leaf spring member by applying vibration to any of the leaf spring member, the string member, or the filter cloth of the filter plate, and the string member. The filter cloth vibrates along the filtration surface of the filter plate. The vibration facilitates the peeling of the cake attached to the filter cloth, and smoothly peels from the filter cloth.
However, if the amplitudes of the pair of leaf springs erected on the filter plate do not match, the vibrations cancel each other, resulting in a smaller vibration and a shorter vibration generation time. Moreover, since the string-like member is subjected to the tensile and compressive stress from the leaf spring and the load of the filter cloth and the cake, a large strength is required and it is difficult to form the elastic member. Furthermore, since the lower end portion of the filter cloth is fixed to the filter plate, there is a problem that the vibration amplitude is weak below the filter cloth and the peelability is poor.
この発明は、剥離性の悪いケーキでも、簡易な構成でろ布から容易に剥離させることができるフィルタープレスにおけるろ布の吊設装置を提供する。 The present invention provides a filter cloth suspending device in a filter press that can be easily peeled off from a filter cloth with a simple configuration even with a cake having poor peelability.
この発明のフィルタープレスにおけるろ布の吊設装置の要旨は、開閉自在に並列したろ板の上部に、ろ布を吊掛した上部ろ布ロッドをろ布芯金に係止した吊設装置を配設し、ろ板の表裏のろ過床面にろ布を張設するフィルタープレスにおいて、ろ板の上方中央部に支柱を立設し、支柱にろ布芯金を挿通支持すると共に、ろ布芯金の支柱近傍に上部ろ布ロッドを係止して、上部ろ布ロッドを弾性部材で構成したので、ろ板の開板と同時にろ布に付着したケーキ等の荷重が一気に上部ろ布ロッドに掛かり、係止部を支点に両端部が下方に撓む。上部ろ布ロッドは弾性部材で構成してあるので、下至点に到達すると上方に反発し、この作用を繰返すことにより、ろ布には上下の振動が発生してケーキが剥離される。 The gist of the filter cloth suspending device in the filter press according to the present invention is a suspension device in which an upper filter cloth rod that hangs a filter cloth is locked to a filter cloth mandrel on the upper part of a filter plate that is openable and closable. In the filter press where the filter cloth is installed and stretched on the filtration floor surface of the front and back of the filter plate, a support column is erected in the upper center of the filter plate, and the filter cloth core is inserted and supported in the support column. The upper filter cloth rod is locked in the vicinity of the mandrel support and the upper filter cloth rod is made of an elastic member, so that the load of cake and other materials adhering to the filter cloth is applied to the upper filter cloth rod at the same time as the filter plate is opened. Both ends are bent downward with the engaging portion as a fulcrum. Since the upper filter cloth rod is made of an elastic member, the upper cloth cloth rod is repelled upward when reaching the lower end point, and by repeating this action, the filter cloth is vibrated up and down, and the cake is peeled off.
ろ布芯金を摺動自在に支柱に挿通し、支柱の下部外周にスプリングを介装し、スプリングによりろ布芯金を揺動自在に支持すれば、上部ろ布ロッドの振動と共振することで振幅が増幅され、振動の際に大きな加速度を発生させて、ケーキ剥離を促進する。 If the filter cloth mandrel is slidably inserted into the support column, a spring is inserted around the lower periphery of the support column, and the filter cloth mandrel is swingably supported by the spring, it will resonate with the vibration of the upper filter cloth rod. Amplifies the amplitude and generates a large acceleration during vibration to promote cake peeling.
ろ布芯金両端部の下方に、加振バーをろ板列に沿って昇降自在に橋架し、加振バーに振動装置を配設すれば、剥離し難いケーキがろ布に残存した場合、加振バーによって上部ろ布ロッドを介してろ布を効率よく振動させることができ、特に洗浄水を用いることなくろ布を再生することができる。 Under the filter cloth mandrel both ends, if the vibration bar is bridged up and down along the filter plate row and a vibration device is installed on the vibration bar, if a cake that does not peel easily remains on the filter cloth, The vibration bar can efficiently vibrate the filter cloth through the upper filter cloth rod, and the filter cloth can be regenerated without using cleaning water.
ろ板の開板時に、ろ布芯金の下降位置を検出するろ布位置検知装置を配設とすれば、ろ布にケーキが付着して残存している等の異常の発生を検知できる。 If a filter cloth position detection device that detects the descending position of the filter cloth mandrel is provided when the filter plate is opened, it is possible to detect the occurrence of an abnormality such as cake remaining on the filter cloth.
ろ布芯金を弾性部材で構成すれば、上部ろ布ロッドをろ布芯金両端部近傍で係止でき、上部ろ布ロッドにかかる荷重を分散できる。 If the filter cloth core is made of an elastic member, the upper filter cloth rod can be locked in the vicinity of both ends of the filter cloth core, and the load applied to the upper filter cloth rod can be dispersed.
この発明に係るフィルタープレスにおけるろ布の吊設装置は、上記のように構成してあり、装置の大型化を必要としない簡易な構成で、軽量化を図ることができる。
具体的には、ろ布がろ過面に沿って振動するので、ろ板間の開板距離を小さくすることができ、フィルタープレスの小型化が可能となる。また、ろ布全面に均一な上下の振動だけでなく、中央部と側方部で異なる振動を作用させ、剥離性の悪いケーキも容易に剥離させることができる。さらに、ろ布を吊掛する弾性部材をスプリング等の弾性体で支持すると、振動を増幅でき、さらに剥離性をよくできる。
The filter cloth suspending device in the filter press according to the present invention is configured as described above, and can be reduced in weight with a simple configuration that does not require an increase in the size of the device.
Specifically, since the filter cloth vibrates along the filtration surface, the opening distance between the filter plates can be reduced, and the filter press can be downsized. In addition to uniform vertical vibrations on the entire surface of the filter cloth, different vibrations can be applied to the central portion and the side portions, and cakes with poor peelability can be easily peeled off. Furthermore, if the elastic member for hanging the filter cloth is supported by an elastic body such as a spring, vibration can be amplified and the peelability can be improved.
この発明に係るフィルタープレスにおけるろ布の吊設装置を図面に基づき詳述すると、図1はろ布の吊設装置を有するフィルタープレスの概略側面図であって、本発明に係るフィルタープレス1は、フロントフレーム2とリアーフレーム3とに支持された一対の平行なガイドレール4が支架されている。
このガイドレール4には、表裏にろ過床面5aを有するろ板5と、ろ板5の上部に配設した吊設装置6と、吊設装置6にて吊掛されてろ過床面5a上に張設されたろ布7とが、複数装着されている。複数のろ板5…は、ガイドレール4上に前後進可能に載置されている。
リアーフレーム3には開閉装置8を支架し、開閉装置8を伸長させてムーバブルヘッド9をフロントフレーム2方向に押圧することによりろ板5を閉板し、閉板したろ板5,5間のろ過室10に原液を供給すれば、ろ液はろ布7を通過して外部に排出される。ろ布7で捕捉された固形物はろ過室10内でケーキ層を形成しながら脱水される。
脱水終了後、開閉装置8を収縮してろ板5を開板する。連結リンク11によって決められた所定の間隔で、各ろ板5を一斉に開板することができる。そして、ろ過室10内のケーキを落下させて、機外へ排出するようにしている。なお、ろ板5を開閉させる開閉装置8は、油圧シリンダー、電動シリンダー等を用いることができる。
The filter cloth suspending device in the filter press according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic side view of a filter press having a filter cloth suspending device, and the filter press 1 according to the present invention includes: A pair of parallel guide rails 4 supported by the front frame 2 and the rear frame 3 are supported.
The guide rail 4 has a filter plate 5 having a filtration floor 5a on the front and back, a suspension device 6 disposed on the top of the filter plate 5, and a suspension device 6 that is suspended on the filtration floor 5a. A plurality of filter cloths 7 are attached. The plurality of filter plates 5 are placed on the guide rail 4 so as to be able to move forward and backward.
An opening / closing device 8 is supported on the rear frame 3, the filter device 5 is closed by extending the opening / closing device 8 and pressing the movable head 9 toward the front frame 2, and between the closed filter plates 5, 5. When the stock solution is supplied to the filtration chamber 10, the filtrate passes through the filter cloth 7 and is discharged to the outside. The solid matter captured by the filter cloth 7 is dehydrated while forming a cake layer in the filtration chamber 10.
After dehydration, the opening / closing device 8 is contracted to open the filter plate 5. The filter plates 5 can be simultaneously opened at a predetermined interval determined by the connecting link 11. And the cake in the filtration chamber 10 is dropped and discharged out of the machine. The opening / closing device 8 that opens and closes the filter plate 5 may be a hydraulic cylinder, an electric cylinder, or the like.
図2に示すように、各ろ板5の表裏には、凹状のろ過床面5aが形成されている。ろ過床面5aは、ろ板5の閉板時に隣接するろ板5の相対向するろ過床面5aとの間でろ過室10を区画形成する。ろ板5の表裏のろ過床面5a上にはろ布7が張設され、ろ布7の上部は、上部ろ布ロッド12によって支持されている。図4に示すように、ろ布7の上端部と下端部とには、それぞれ袋部7a,7bが設けられ、上側の袋部7aには上部ろ布ロッド12が、下側の袋部7bにはろ布7を緊張させるための重錘13がそれぞれ挿通されている。 As shown in FIG. 2, a concave filtration floor 5 a is formed on the front and back of each filter plate 5. The filtration bed surface 5a partitions the filtration chamber 10 with the opposite filtration bed surfaces 5a of the adjacent filter plates 5 when the filter plate 5 is closed. A filter cloth 7 is stretched on the filtration floor 5 a on the front and back of the filter plate 5, and the upper part of the filter cloth 7 is supported by an upper filter cloth rod 12. As shown in FIG. 4, bag portions 7 a and 7 b are respectively provided at the upper end portion and the lower end portion of the filter cloth 7, and the upper filter cloth rod 12 is provided at the upper bag portion 7 a and the lower bag portion 7 b. A weight 13 for tensioning the filter cloth 7 is inserted into each.
図3に示すように、ろ板5の上方の中央部には、一対の支柱14,14が立設され、この支柱14,14によってろ布芯金15が摺動自在に挿通されている。支柱14の下部の外周には、スプリング16が介装されており、スプリング16によってろ布芯金15が支柱14に揺動自在に支持されている。 As shown in FIG. 3, a pair of support columns 14, 14 are erected in the central portion above the filter plate 5, and the filter cloth core 15 is slidably inserted by the support columns 14, 14. A spring 16 is interposed on the outer periphery of the lower portion of the support 14, and the filter cloth core 15 is supported by the support 16 so as to be swingable.
ろ布芯金15の前後面には、上部ろ布ロッド12の係止部としてのサポート17が固着されている。サポート17は、図5に示すように、ろ布7をろ板5の表裏のろ過床面5a上を覆うように垂下させた状態で袋部7aに挿通された上部ろ布ロッド12を係止するように、ろ布芯金15の側面に相対向して立設されている。
図4に示すように、ろ布7の袋部7aのサポート17に当接する部分には、切欠窓7cを設けてあり、下方の袋部7bには切欠窓7dを設けてある。
A support 17 as an engaging portion of the upper filter cloth rod 12 is fixed to the front and rear surfaces of the filter cloth core 15. As shown in FIG. 5, the support 17 holds the upper filter cloth rod 12 inserted through the bag portion 7 a in a state where the filter cloth 7 is suspended so as to cover the upper and lower filtration floor surfaces 5 a of the filter plate 5. As shown in the figure, the filter cloth core 15 is erected so as to face the side surface.
As shown in FIG. 4, the notch window 7c is provided in the part which contact | abuts the support 17 of the bag part 7a of the filter cloth 7, The notch window 7d is provided in the lower bag part 7b.
図5,6は、ろ布7のろ布芯金15への取付部の詳細を示すものである。ろ布芯金15の前後面に設けるサポート17の上端部は、上端を円筒状に巻き込むことによって形成されている。ろ布7を振動させたとき、サポート17に係止したろ布7の上部ろ布ロッド12が上方に撥ねる等して外れるのを防止するためのものである。 5 and 6 show details of the attachment portion of the filter cloth 7 to the filter cloth core 15. The upper end portion of the support 17 provided on the front and rear surfaces of the filter cloth core 15 is formed by winding the upper end into a cylindrical shape. When the filter cloth 7 is vibrated, the upper filter cloth rod 12 of the filter cloth 7 that is locked to the support 17 is prevented from coming off by repelling upward.
支柱14及びスプリング16でろ布芯金15を支持する部分には、支持部の補強のため、当て板25と押え板26でろ布芯金15を挟持しても良く、また、この当て板25あるいは押え板26の前後面にサポート17を固着しても良い。 In order to reinforce the support portion, the filter cloth core 15 may be held between the support plate 25 and the presser plate 26 at the portion where the filter cloth core 15 is supported by the support column 14 and the spring 16. The support 17 may be fixed to the front and rear surfaces of the presser plate 26.
本実施例では、角形鋼管で構成したろ布芯金15に、ろ布7を吊掛した上部ろ布ロッド12を係止したものである。ろ布芯金15と上部ろ布ロッド12をそれぞれ剛性部材と弾性部材で構成してあるので、ろ過・脱水工程終了後、ろ板5を開板すれば、ろ布7や重錘13及びろ布7に付着したケーキ等の荷重が一気に上部ろ布ロッド12に掛かり、中央部の支柱14を支点に両端部が下方に撓む。下方に撓んだ上部ろ布ロッド12は、下至点に到達すると上方に反発し、この作用を繰返すことにより、ろ布7には上下の振動が発生する。また、ろ布7の中央部近傍は支柱により支持されており、ろ布7の両端部付近の振幅が大きいという特性がある。そのため、ろ布7には捩れが発生し、ケーキ厚が薄い剥離性の悪いケーキもろ布7から容易に剥離できるものである。 In this embodiment, an upper filter cloth rod 12 with a filter cloth 7 suspended thereon is locked to a filter cloth core 15 made of a square steel pipe. Since the filter cloth core 15 and the upper filter cloth rod 12 are composed of a rigid member and an elastic member, respectively, if the filter plate 5 is opened after the filtration / dehydration process, the filter cloth 7, the weight 13 and the filter cloth are opened. 7 is applied to the upper filter cloth rod 12 at a stretch, and both ends bend downward with the central column 14 as a fulcrum. The upper filter cloth rod 12 bent downward is repelled upward when reaching the lower solstice point, and by repeating this action, vertical vibration is generated in the filter cloth 7. Further, the vicinity of the center portion of the filter cloth 7 is supported by a support column, and there is a characteristic that the amplitude in the vicinity of both end portions of the filter cloth 7 is large. Therefore, the filter cloth 7 is twisted, and a cake having a thin cake thickness and poor peelability can be easily peeled off from the filter cloth 7.
ろ布芯金15を挿通支持している支柱14の下部にはスプリング16を介装しているため、ろ布芯金15及び上部ろ布ロッド12の振動と共振することで振幅が増幅され、振動の際に大きな加速度を発生させて、ケーキ剥離を促進する。
上部ろ布ロッド12を構成する弾性部材としては、バネ鋼やグラスファイバー等の公知の部材を仕様に合わせて適宜選定する。
Since a spring 16 is interposed under the support column 14 through which the filter cloth core 15 is inserted and supported, the amplitude is amplified by resonating with the vibration of the filter cloth core 15 and the upper filter cloth rod 12. A large acceleration is generated during vibration to promote cake peeling.
As an elastic member which comprises the upper filter cloth rod 12, well-known members, such as spring steel and glass fiber, are suitably selected according to a specification.
図1に示すように、フロントフレーム2とリアーフレーム3とに立設した昇降装置24に、ガイドレール4と平行に一対の加振バー19が昇降可能に挿通支持されている。昇降装置24はシリンダー等の周知の技術を用いることができる。
剥離し難いケーキがろ布7に残存した場合、加振バー19によって上部ろ布ロッド12を介してろ布7を効率よく振動させることができ、特に洗浄水を用いることなくろ布7を再生することができる。
As shown in FIG. 1, a pair of vibration bars 19 are inserted into and supported by an elevating device 24 erected on a front frame 2 and a rear frame 3 so as to be movable in parallel with the guide rail 4. The elevating device 24 can use a known technique such as a cylinder.
When cake that is difficult to peel remains on the filter cloth 7, the filter cloth 7 can be efficiently vibrated through the upper filter cloth rod 12 by the vibration bar 19, and the filter cloth 7 is regenerated without using cleaning water in particular. be able to.
具体的には、シリンダー24により加振バー19を上昇させ、ろ布芯金15両端部に加振バー19が下方から当接した状態で、加振バー19の中央部付近に設けられている振動装置20を振動し、ろ布7を強制的に振動させ、残存しているケーキの剥離を行う。
ろ板5の開板時に、加振バー19は下降しているため、弾性部材で構成した上部ろ布ロッド12の振動の際に、干渉することがなく、十分な振幅が確保できる。
また、ろ板の閉板時には、加振バー19は上昇し、ろ布芯金15の下方から当接しながら押上げ、ろ板5の原液通路22とろ布の原液供給板23の位置を合わせる。
ろ布芯金15は剛性部材で構成されているため、ろ板5の閉板時に加振バー19を上昇させて、ろ布芯金15の下方から当接しながら押上げる際に、ろ板5の原液通路22とろ布の原液供給板23の位置を合わせ易い。
Specifically, the vibration bar 19 is raised by the cylinder 24 and is provided in the vicinity of the central portion of the vibration bar 19 with the vibration bar 19 coming into contact with both ends of the filter cloth core 15 from below. The vibrating device 20 is vibrated, the filter cloth 7 is forcibly vibrated, and the remaining cake is peeled off.
When the filter plate 5 is opened, the vibration bar 19 is lowered, so that there is no interference when the upper filter cloth rod 12 made of an elastic member is vibrated, and a sufficient amplitude can be secured.
In addition, when the filter plate is closed, the vibration bar 19 is lifted and pushed up while coming into contact with the lower portion of the filter cloth core 15 to align the stock solution passage 22 of the filter plate 5 with the stock solution supply plate 23 of the filter cloth.
Since the filter cloth core 15 is composed of a rigid member, when the filter bar 5 is closed, the vibration bar 19 is lifted and pushed up while coming into contact with the filter cloth core 15 from below. It is easy to align the position of the stock solution passage 22 and the stock solution supply plate 23 of the filter cloth.
ろ布7にケーキが残存する場合、ケーキの荷重により支柱14に介装しているスプリング16が圧縮され、ろ布7、上部ろ布ロッド12、ろ布芯金15が押し下がった状態となる。この状態でろ板5を閉板すると、原液供給板23の挟着不具合や、上部ろ布ロッド12の挟み込みによる部品損傷、液漏れ等の問題がある。
図9と図10に基づき、ろ布位置検知装置21について詳述する。本実施例においては透過型の光電スイッチによりろ布位置検知を行なっているが、ワイヤー等の有線による検知装置等も使用可能である。フィルタープレス1のフロントフレーム2上部に投光器21aを配設し、リアーフレーム3上部には、前記投光器21aから照射される投光線21bを受光する受光器21cを配設している。前記投光線21bはガイドレール4に平行して照射され、対峙している受光器21cで受光する。図9は全てのろ布芯金15が正常位置に上昇しており、投光器21aから照射された投光線21bは受光器21cに入射している。この状態においては、ケーキは確実に剥離されていることを示している。図10では、正常位置に上昇していないろ布芯金15があるため、この上部ろ布ロッド12によって投光線21bが遮断され、受光器21cに入射していない。このことは、ケーキ剥離が完全に行なわれておらず、ろ布7にケーキが付着して残存している等の異常が発生していることを示している。
本実施例では、図4に示すように、ろ布芯金15の中央部下方に投光線21bを照射して検知しているが、フィルタープレスの型式、ろ室数、現場雰囲気等を考慮して、照射位置、照射数は適宜設定してもよいものである。
When the cake remains on the filter cloth 7, the spring 16 interposed in the column 14 is compressed by the cake load, and the filter cloth 7, the upper filter cloth rod 12, and the filter cloth core 15 are pushed down. . If the filter plate 5 is closed in this state, there are problems such as a pinch failure of the stock solution supply plate 23, component damage due to pinching of the upper filter cloth rod 12, and liquid leakage.
The filter cloth position detection device 21 will be described in detail with reference to FIGS. In this embodiment, the filter cloth position is detected by a transmissive photoelectric switch, but a wired detection device such as a wire can also be used. A light projector 21 a is disposed on the front frame 2 of the filter press 1, and a light receiver 21 c that receives the light projection 21 b emitted from the light projector 21 a is disposed on the rear frame 3. The light projection 21b is irradiated in parallel with the guide rail 4 and is received by a light receiver 21c facing each other. In FIG. 9, all the filter cloth cores 15 are raised to the normal position, and the projection light 21 b emitted from the light projector 21 a is incident on the light receiver 21 c. In this state, the cake is surely peeled. In FIG. 10, since there is the filter cloth core 15 that has not been raised to the normal position, the projection light 21b is blocked by the upper filter cloth rod 12 and is not incident on the light receiver 21c. This indicates that the cake is not completely peeled off and an abnormality such as the cake remaining on the filter cloth 7 remains.
In this embodiment, as shown in FIG. 4, the detection is performed by irradiating the projection 21b below the center portion of the filter cloth core 15. However, the filter press type, the number of filter chambers, the field atmosphere, etc. are taken into consideration. The irradiation position and the number of irradiations may be set as appropriate.
図6〜8は他の実施例に係るフィルタープレスにおけるろ布の吊設装置30であり、弾性部材で構成したろ布芯金35に、L字状のサポート37を立設し、ろ布31を吊掛して弾性部材で構成した上部ろ布ロッド32を係止したものである。
ろ板5の開板と同時に、ケーキ等の自重により上部ろ布ロッド32と共にろ布芯金35を同時に振動させて、ろ布31に付着したケーキを剥離するものである。
6 to 8 show a filter cloth suspending device 30 in a filter press according to another embodiment. An L-shaped support 37 is erected on a filter cloth core 35 made of an elastic member, and a filter cloth 31 is provided. And the upper filter cloth rod 32 made of an elastic member is locked.
Simultaneously with the opening of the filter plate 5, the filter cloth cored bar 35 is simultaneously vibrated together with the upper filter cloth rod 32 by the weight of the cake or the like, and the cake attached to the filter cloth 31 is peeled off.
図6に示すように、ろ板5の表裏のろ過床面5a上に、ろ布31が張設されてあり、ろ布31の上端部と下端部とには、それぞれ袋部31a,31bが設けられ、上側の袋部31aには上部ろ布ロッド32が、下側の袋部31bにはろ布31を緊張させるための重錘33がそれぞれ挿通されている。 As shown in FIG. 6, a filter cloth 31 is stretched on the filtration floor surfaces 5 a on the front and back of the filter plate 5, and bag portions 31 a and 31 b are respectively provided at the upper end portion and the lower end portion of the filter cloth 31. An upper filter cloth rod 32 is inserted into the upper bag portion 31a, and a weight 33 for tensioning the filter cloth 31 is inserted into the lower bag portion 31b.
図7に示すように、ろ板5の上方の中央部には、一対の支柱34,34が立設され、この支柱34,34によってろ布芯金35が摺動自在に挿通されている。支柱34の下部の外周には、スプリング36が介装されており、スプリング36によってろ布芯金35が支柱34に揺動自在に支持されている。支柱34及びスプリング36でろ布芯金35を支持する部分には、当て板38と押え板39でろ布芯金35を挟持し、支持部の応力集中を分散させている。サポート37は、ろ布芯金35の当て板38あるいは押え板39の前後面に固着しても良い。
ろ布芯金35を弾性部材で構成しているので、サポート37をろ布芯金35両端部近傍まで配設でき、上部ろ布ロッド32にかかる荷重を分散できる。
As shown in FIG. 7, a pair of support columns 34, 34 are erected in the central portion above the filter plate 5, and a filter cloth core 35 is slidably inserted through the support columns 34, 34. A spring 36 is interposed on the outer periphery of the lower part of the support 34, and the filter cloth core 35 is supported by the support 34 so as to be swingable. The filter cloth core 35 is sandwiched between the backing plate 38 and the presser plate 39 in the portion where the support cloth 34 and the spring 36 support the filter cloth core 35 to disperse the stress concentration of the support portion. The support 37 may be fixed to the front and rear surfaces of the contact plate 38 or the presser plate 39 of the filter cloth core 35.
Since the filter cloth mandrel 35 is formed of an elastic member, the support 37 can be disposed up to the vicinity of both ends of the filter cloth mandrel 35, and the load applied to the upper filter cloth rod 32 can be dispersed.
サポート37は、図8に示すように、ろ布31をろ板5の表裏のろ過床面5a上を覆うように垂下させた状態で袋部31aに挿通された上部ろ布ロッド32を係止するように、ろ布芯金35の側面に相対向して立設されている。
ろ布31の袋部31aのサポート37に当接する部分には、切欠窓31cが設けられている。
As shown in FIG. 8, the support 37 holds the upper filter cloth rod 32 inserted through the bag portion 31 a in a state where the filter cloth 31 is suspended so as to cover the upper and lower filtration floor surfaces 5 a of the filter plate 5. As shown, the filter cloth core 35 is erected so as to face the side surface.
A cutout window 31 c is provided in a portion of the filter cloth 31 that contacts the support 37 of the bag portion 31 a.
ろ過・脱水工程終了後、ろ板5を開板すれば、ろ布31や重錘33及びろ布31に付着したケーキ等の荷重が一気に弾性部材で構成した上部ろ布ロッド32に掛かり、上部ろ布ロッドを係止しているサポート37を介してろ布芯金35に掛かる。ろ布芯金35も弾性部材で構成されているため、中央部の支柱34を支点に両端部が下方に撓む。下方に撓んだ上部ろ布ロッド32及びろ布芯金35は、下至点に到達すると上方に反発し、この作用を繰返すことにより、ろ布31には上下の振動が発生する。また、ろ布31の中央部近傍は支柱により支持されており、ろ布31の両端部付近の振幅が大きいという特性がある。そのため、ろ布31には捩れが発生し、ケーキ厚が薄い剥離性の悪いケーキもろ布31から容易に剥離できるものである。 If the filter plate 5 is opened after the filtration / dehydration process is completed, the load of the cake attached to the filter cloth 31 and the weight 33 and the filter cloth 31 is applied to the upper filter cloth rod 32 made of an elastic member at a stretch, and the upper filter It hangs on the filter cloth mandrel 35 through the support 37 that locks the cloth rod. Since the filter cloth core 35 is also made of an elastic member, both ends bend downward with the central support column 34 as a fulcrum. The upper filter cloth rod 32 and the filter cloth mandrel 35 bent downward are repelled upward when reaching the lower end point, and by repeating this action, vertical vibrations are generated in the filter cloth 31. Further, the vicinity of the center portion of the filter cloth 31 is supported by a support column, and there is a characteristic that the amplitude in the vicinity of both end portions of the filter cloth 31 is large. Therefore, the filter cloth 31 is twisted, and a cake having a thin cake thickness and poor peelability can be easily peeled from the filter cloth 31.
ろ布芯金35を上下動可能に挿通支持している支柱34の下部にはスプリング36を介装しているため、上部ろ布ロッド32の振動と共振することで振幅が増幅され、振動の際に大きな加速度を発生させて、ケーキ剥離を促進する。
剥離し難いケーキがろ布31に残存した場合、シリンダー24により加振バー19を上昇させ、ろ布芯金35両端部に加振バー19が下方から当接した状態で、加振バー19の中央部付近に設けられている振動装置20を振動させ、ろ布31を強制的に振動させ、残存しているケーキの剥離を行う。
ろ布芯金35を構成する弾性部材としては、バネ鋼やグラスファイバー等の公知の部材を仕様に合わせて適宜選定する。
Since a spring 36 is interposed under the support column 34 through which the filter cloth mandrel 35 is inserted and supported so as to move up and down, the amplitude is amplified by resonating with the vibration of the upper filter cloth rod 32, and the vibration is reduced. In particular, a large acceleration is generated to promote cake peeling.
When cake that is difficult to peel remains on the filter cloth 31, the vibration bar 19 is raised by the cylinder 24, and the vibration bar 19 is in contact with the both ends of the filter cloth core 35 from below. The vibrating device 20 provided in the vicinity of the center is vibrated, the filter cloth 31 is forcibly vibrated, and the remaining cake is peeled off.
As an elastic member constituting the filter cloth mandrel 35, a known member such as spring steel or glass fiber is appropriately selected according to the specification.
本発明のフィルタープレスにおけるろ布の吊設装置は、ろ板の開板と同時にろ布に付着したケーキの自重によりろ布が振動して剥離することができる。また、部品点数も少なく簡易な構成であるので、吊設装置に係る部品の分解・組立が容易に行うことができる。
したがって、この発明は、上水汚泥、下水汚泥、または、産業排水汚泥等について、大容量の汚泥等を処理するフィルタープレス、及び多室型のフィルタープレスのろ布の吊設装置に適用できるものである。
The filter cloth suspending device in the filter press of the present invention can peel the filter cloth by vibration due to the weight of the cake adhering to the filter cloth simultaneously with the opening of the filter plate. Moreover, since the number of parts is small and the structure is simple, the parts related to the hanging device can be easily disassembled and assembled.
Therefore, the present invention can be applied to a filter press for treating large-capacity sludge, etc., and a filter cloth suspending device for a multi-chamber type filter press for water sewage sludge, sewage sludge, industrial wastewater sludge, etc. It is.
1 フィルタープレス
5 ろ板
5a ろ過床面
6、30 吊設装置
7、31 ろ布
12、32 上部ろ布ロッド
14、34 支柱
15、35 ろ布芯金
16、36 スプリング
19 加振バー
20 振動装置
21 ろ布位置検知装置
DESCRIPTION OF SYMBOLS 1 Filter press 5 Filter board 5a Filtration floor surface 6, 30 Lifting device 7, 31 Filter cloth 12, 32 Upper filter cloth rod 14, 34 Strut 15, 35 Filter cloth core 16, 36 Spring 19 Excitation bar 20 Vibration apparatus 21 Filter cloth position detection device
Claims (5)
The said filter cloth core metal (35) was comprised with the elastic member, The hanging apparatus of the filter cloth in the filter press of any one of Claim 1 thru | or 4 characterized by the above-mentioned.
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CN112121485A (en) * | 2020-10-12 | 2020-12-25 | 株洲时代新材料科技股份有限公司 | Cloth hanging mechanism for filter cloth of filter press |
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JP3228149B2 (en) * | 1996-10-01 | 2001-11-12 | 株式会社石垣 | Filter press filtration unit |
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