JPS6352799A - Method and instrument for measuring strength of gravity dehydrated cake - Google Patents
Method and instrument for measuring strength of gravity dehydrated cakeInfo
- Publication number
- JPS6352799A JPS6352799A JP61192858A JP19285886A JPS6352799A JP S6352799 A JPS6352799 A JP S6352799A JP 61192858 A JP61192858 A JP 61192858A JP 19285886 A JP19285886 A JP 19285886A JP S6352799 A JPS6352799 A JP S6352799A
- Authority
- JP
- Japan
- Prior art keywords
- cake
- gravity
- strength
- pressing member
- dehydrated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005484 gravity Effects 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims description 19
- 238000003825 pressing Methods 0.000 claims abstract description 38
- 230000018044 dehydration Effects 0.000 claims abstract description 33
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 33
- 238000005070 sampling Methods 0.000 abstract description 6
- 239000004744 fabric Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 238000000691 measurement method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000007906 compression Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 101100506443 Danio rerio helt gene Proteins 0.000 description 1
- 101100506445 Mus musculus Helt gene Proteins 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Filtration Of Liquid (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、各種水処理工程より排出される汚泥の脱水に
用いられるベルトプレス型脱水機において、重力月１２
水部で生成される重力脱水ケーキの強度を連続的に測定
する方法及びその装置に関するものである。Detailed Description of the Invention (Industrial Application Field) The present invention is directed to a belt press type dehydrator used for dewatering sludge discharged from various water treatment processes.
The present invention relates to a method and apparatus for continuously measuring the strength of a gravity-dehydrated cake produced in a water section.
ベルトプレスによる汚泥脱水においては、重力脱水ケー
キの強度が脱水機の性能に大きな影響を及ばずことが経
験的に知られている。重力脱水ケーキの強度が十分でな
いと、重力脱水工程以降の圧搾工程におけるケーキのザ
イドリークやろ布ヘルドへのしみ込みが生じ、処理速度
の低下やろ布ヘルドからのケーキ剥離性の低下が生し、
圧搾ケーキ含水率の」１昇あるいはろ布ベルトの洗浄水
量の増大等を招くことになる。In sludge dewatering using a belt press, it is empirically known that the strength of the gravity dewatering cake does not have a large effect on the performance of the dehydrator. If the strength of the gravity dewatering cake is not sufficient, zydleek of the cake will occur in the compression process after the gravity dehydration process and seepage into the filter cloth heald, resulting in a decrease in processing speed and a decrease in the ability to remove the cake from the filter cloth heald.
This may result in an increase in the water content of the pressed cake by 1 or an increase in the amount of water used to wash the filter cloth belt.
従って、何らかの方法で重力脱水ケーキの強度を計測し
、ベルトプレス型脱水機の運転管理に利用することが考
えられる。しかし、現在のところ適当な計測方法がない
ために、２次的手段としてケーキのサイドリーク、剥離
性等の計測を行っているのが現状であるが、かかる方法
は、測定方法が複雑で、得られるデータの時間遅れが生
ずるために、運転管理指標としては必ずしも好ましいも
のではない。また、最近になって、いわゆる針入度試験
法を改良した凝集体強度測定方法が開発されたが、これ
は回分式の測定であるうえに、試料のサンプリングが必
要となる。ところが、ベルトプレス脱水で生じる凝集体
や重力脱水ケーキの強度は小さく、サンプリングによっ
て容易に破壊されるから、上記方法を用いることは不可
能である。Therefore, it is conceivable to measure the strength of the gravity-dehydrated cake by some method and use it for operational management of the belt press type dehydrator. However, as there is currently no suitable measurement method, measurements of cake side leakage, peelability, etc. are currently being used as secondary means, but such methods require complicated measurement methods. Since there is a time delay in the obtained data, it is not necessarily preferable as an operation management index. In addition, recently, a method for measuring aggregate strength has been developed that is an improved version of the so-called penetration test method, but this is a batch-type measurement and requires sample sampling. However, the strength of the aggregates and gravity-dehydrated cake produced by belt press dehydration is low and is easily destroyed by sampling, making it impossible to use the above method.
このために、サンプリングが不要で、計測容易な連続式
強度測定方法の開発が望まれている。For this reason, it is desired to develop a continuous strength measurement method that does not require sampling and is easy to measure.
本発明は、上記従来の問題点を克服し、ヘルドプレス型
脱水機の運転管理に利用可能な重力脱水ケーキの連続式
強度測定方法及びその装置を提供することを１０勺とす
るものである。It is an object of the present invention to overcome the above-mentioned conventional problems and to provide a continuous strength measuring method and apparatus for gravity-dehydrated cakes that can be used for operational management of held press type dehydrators.
本発明は、上記従来の問題点を克服するための手段とし
て、ヘルドプレス型脱水機の重力脱水部を走行する重力
脱水ケーキの厚さｘ０を計測すると共に、該走行する重
力脱水ケーキと摺動する所定の押圧力を付与した押圧部
材の沈下深さＸを計測し、これらの出力比ｘ ／ ｘ
ｏを強度の指標とすることを特徴とする重力脱水ケーキ
強度の測定方法と、これを実施するための好適な装置を
提供するものである。As a means for overcoming the above-mentioned conventional problems, the present invention measures the thickness x0 of the gravity dewatering cake running in the gravity dewatering section of a held press type dehydrator, and also measures the thickness Measure the sinking depth X of the pressing member to which a predetermined pressing force is applied, and calculate the output ratio x / x
The present invention provides a method for measuring gravity dehydration cake strength characterized by using o as an index of strength, and a suitable device for carrying out the method.
強度を測定する一般的な方法は、加える力（応力）と変
化した量（変位）との関係を知ることである。ヘルドプ
レス型脱水機においては、ろ布ベルトによる圧搾工程の
前に重力脱水を行う重力脱水部が存在し、この重力脱水
部では走行するろ布ベルト上に適当な厚さの重力脱水ケ
ーキが形成される。A common way to measure strength is to find the relationship between the applied force (stress) and the amount changed (displacement). In a held press type dehydrator, there is a gravity dehydration section that performs gravity dehydration before the compression process using the filter cloth belt, and in this gravity dehydration section, a gravity dehydration cake of an appropriate thickness is formed on the running filter cloth belt. Ru.
いま、この重力脱水ケーキ」二に所定重量の「重り」を
載せたと考えると、「重りＪはケーキの強度に応じて適
当量沈下しながらろ布ヘルドの走行方向へ移動する。そ
の沈下深さＸは、ケーキ強度の大きい程小さく、「重り
」の重量が大きい程大きい。従って、沈下深さＸを計測
すれば、強度に応じた信号を得ることができる。しかし
、沈下深さＸは重力脱水ケーキの厚さＸ。によって変化
し、厚さＸ。の大きい程大きくなる。以上は「重り」を
重力脱水ケーキ上に載せて放置した場合の現象であり、
この方式のままではｒ重りｊは重力脱水ケーキの移動と
共に移動することになり、四分式かつ複雑な測定方法で
ある。Now, if we consider that a "weight" of a predetermined weight is placed on this gravity dehydration cake "2," the "weight J will move in the running direction of the filter cloth heddle while sinking an appropriate amount depending on the strength of the cake. The sinking depth The larger the cake strength is, the smaller X is, and the larger the weight of the "weight" is, the larger X is. Therefore, by measuring the sinking depth X, a signal corresponding to the intensity can be obtained. However, the sinking depth X is the thickness X of the gravity dewatering cake. varies by the thickness X. The larger the value, the larger the value. The above is a phenomenon that occurs when a "weight" is placed on a gravity dehydration cake and left unattended.
If this method is maintained, the r weights j will move together with the movement of the gravity dehydration cake, resulting in a four-part and complicated measurement method.
本発明では、この現象を連続化するために、「重り」と
して、走行する重力脱水ケーキと摺動する所定の押圧力
を付与した押圧部材を用いる。In the present invention, in order to make this phenomenon continuous, a pressing member to which a predetermined pressing force is applied is used as a "weight" to slide on the traveling gravity dehydration cake.
該押圧部材をろ布ヘルドの走行方向には移動しない構造
として、重力脱水ケーキ上にケーキ強度に応じた深さを
もつ溝を形成させ、その溝の深さを計測して沈下深さＸ
とする。With a structure in which the pressing member does not move in the running direction of the filter cloth heald, a groove with a depth corresponding to the cake strength is formed on the gravity dehydration cake, and the depth of the groove is measured to determine the sinking depth X.
shall be.
沈下深さＸを計測する方式としては、重力脱水ケーキ上
に形成される溝の深さを超音波距離計測計、レーザ光距
離計測計等非接触方式の距離計測計を用いて計測して求
めてもよいし、接触式のレヘルスインチ（抵抗式、静電
容量式）等を用いて測ることもできる。また、押圧部材
全体を重力方向（上下方向）にも移動可能としてその沈
下深さを直接各種距離計測計を用いて測ることもできる
し、後述するように、押圧部材を回転自在に枢支してケ
ーキとの摺動部の沈下深さＸを他端の回転角度に変換し
て計測することが便利である。The method of measuring the sinking depth X is to measure the depth of the groove formed on the gravity dehydration cake using a non-contact distance meter such as an ultrasonic distance meter or a laser beam distance meter. Alternatively, it can be measured using a contact type rehesinch (resistance type, capacitance type), etc. Alternatively, the entire pressing member can be moved in the direction of gravity (up and down) and its sinking depth can be directly measured using various distance meters, or as described later, the pressing member can be rotatably supported. It is convenient to measure by converting the sinking depth X of the sliding part with the cake into the rotation angle of the other end.
また、沈下深さＸの絶対値を比較するのでは、重力脱水
ケーキの厚さの影響を大きく受けるから、？ち泥濃度の
変動や、脱水機の処理速度の変化があった場合には、重
力脱水ケーキ強度を正しく計測できないので、押圧力を
かけない場合の重力脱水ケーキの厚さｘ０を別の方法で
計測し、両者の比ｘ ／ ｘ ｏをケーキ強度の指標と
して用いる。重力脱水ケーキの厚さｘ０を求める方法と
しては、前述した既存の距離計測装置を用いることがで
きるし、カウンタバランスによって重力脱水ケーキ上に
かかる押圧力をゼロに調節した前記押圧部材の回転角度
を用いる方法も利用できる。Also, if you compare the absolute value of the sinking depth X, it will be greatly affected by the thickness of the gravity dehydration cake. If there is a change in mud concentration or a change in the processing speed of the dehydrator, the gravity dewatering cake strength cannot be measured correctly, so the thickness x0 of the gravity dewatering cake when no pressing force is applied can be calculated using another method. and use the ratio x/xo as an indicator of cake strength. As a method for determining the thickness x0 of the gravity dehydration cake, the existing distance measuring device described above can be used, and the rotation angle of the pressing member that has adjusted the pressing force on the gravity dehydration cake to zero by counterbalancing is used. The method used is also available.
以上の方法により、所定の押圧力の時のｘ／ｘ（。By the above method, x/x( at a predetermined pressing force).
を強度指標として重力脱水ケーキの強度を測定すること
ができ、ヘルドプレス型脱水機の各種運転操作条件を適
正に制御することができる。The strength of the gravity-dehydrated cake can be measured using this as a strength index, and various operating conditions of the held press type dehydrator can be appropriately controlled.
さらに、本発明の上記方法を実施するだめの最適な装置
について説明する。Furthermore, an optimal apparatus for carrying out the above method of the present invention will be described.
第１図示例において、１−１は先端部がソリ状の押圧部
材で、他端部は回転軸２によって回転自在に枢支され、
押圧部材１−１の先端部が走行するろ布ベルト３上の重
力脱水ケーキ４と摺動し、回転軸２の押圧部材１−１と
反対側には、押圧部材１１の重力脱水ケーキ４にｊｌｌ
ｌわる圧力を調節できるカウンタバランスＷ、が取り付
けられるようになっている。なお、回転軸２には押圧部
材１−１の回転角度を検出する回転角検出装置５を付設
すると便利である。In the first illustrated example, 1-1 is a pressing member with a sled-shaped tip, and the other end is rotatably supported by a rotating shaft 2.
The tip of the pressing member 1-1 slides on the gravity dehydration cake 4 on the running filter cloth belt 3, and on the opposite side of the rotating shaft 2 from the pressing member 1-1, the gravity dehydration cake 4 on the pressing member 11 slides. jll
A counterbalance W that can adjust the changing pressure can be attached. Note that it is convenient to attach a rotation angle detection device 5 to the rotation shaft 2 to detect the rotation angle of the pressing member 1-1.
従って、押圧部材１−１が所定押圧力となるようにカウ
ンタバランスｗｌ の重量を調節し、その時の圧力によ
って、第１図示のように、押圧部材１−１の先端部は走
行する重力脱水ケーキ４内に沈下して溝が形成される。Therefore, the weight of the counterbalance wl is adjusted so that the pressing member 1-1 has a predetermined pressing force, and the pressure at that time causes the tip of the pressing member 1-1 to move against the running gravity dehydration cake, as shown in the first figure. 4 and form a groove.
この溝の深さＸを各種距離計測計で計測するが、図示例
のように押圧部材１−１の沈下を回転角θ１として回転
角検出装置５で検出するようにすれば、θ１はＸ。−Ｘ
（Ｘｏは重力脱水ケーキ厚さ）を示すことは明らかであ
る。また、あらかじめ、第２図のようにθ１とＸ。−Ｘ
との関係を求めておけば、θ１からｘｏ−Ｘを求め、さ
らに超音波距離計測計のような非接触式その他の各種セ
ンサ（図示せず）を配備して重力脱水ケーキ厚さｘｏを
求めればＸ。−（ｘｏ−ｘ）−ｘとして溝の深さＸを求
めることができ、Ｘ ／ Ｘ ６が求められることにな
る。The depth X of this groove is measured by various distance measuring meters, but if the depression of the pressing member 1-1 is detected by the rotation angle detection device 5 as the rotation angle θ1 as shown in the illustrated example, θ1 is X. -X
(Xo is gravity dewatering cake thickness). Also, in advance, as shown in Fig. 2, θ1 and X. -X
If we have determined the relationship between BaX. The groove depth X can be found as -(xo-x)-x, and X/X6 is found.
なお、重力脱水ケーキ厚さｘ０を求めるセンサとして、
前記公知の各種センサを使わずに、押圧部材１−１と同
様のものを使用することができる。In addition, as a sensor for determining the gravity dehydration cake thickness x0,
A member similar to the pressing member 1-1 can be used without using the various known sensors described above.
例えば、第３図示のように、押圧部材１−０の重力脱水
ケーキ４にかかる圧力をゼロにするようなカウンタバラ
ンスＷ。に重量調整することによって、押圧部材１−０
が重量脱水ケーキ４内に沈下しないようにする。そして
、押圧部材１−０の回転角θ。と重力脱水ケーキ厚さＸ
。の関係を第４図のようにあらかじめ求めておけば、回
転角θ。For example, as shown in the third diagram, a counterbalance W is used to reduce the pressure applied to the gravity dehydration cake 4 of the pressing member 1-0 to zero. By adjusting the weight to
prevent it from sinking into the weight dehydrated cake 4. And the rotation angle θ of the pressing member 1-0. and gravity dehydration cake thickness x
. If we calculate the relationship in advance as shown in Figure 4, we can obtain the rotation angle θ.
の検出により重力脱水ケーキ厚さｘ０を連続計測するこ
とができる。By detecting this, the gravity dehydration cake thickness x0 can be continuously measured.
さらに、この場合に好適な装置の例を第５図に示す。即
ち、ベルトプレス型脱水機の重力脱水部に、重力脱水ケ
ーキの厚さｘ０を計測するセンサを設け、さらに前記第
１図示例のような重力脱水ケーキ４への沈下深さＸを計
測する押圧部材１−１を設けたものであり、重力脱水ケ
ーキの厚さＸ。Furthermore, an example of an apparatus suitable for this case is shown in FIG. That is, a sensor for measuring the thickness x0 of the gravity-dehydrated cake is provided in the gravity-dewatering section of the belt press type dehydrator, and a pressure is further applied to measure the sinking depth X into the gravity-dehydrated cake 4 as shown in the first illustrated example. The member 1-1 is provided, and the thickness of the gravity dehydration cake is X.
を計測するセンサとしては前述したような各種計測計を
使用することができるが、前記第３図示例のような押圧
部材１−０を使用するのが便利であり、所定押圧力での
ｘ／Ｘｏを容易に求めることができる。As a sensor for measuring x/ Xo can be easily obtained.
なお、押圧部材先端部の重力脱水ケーキとの摺動部は、
第１図、第３図、第５図に示したソリ状のほか、第６図
示のようにろ布ヘルドの走行方向に回転する円筒６や、
図示しない円板や球などにすることができる。また、垂
直方向に移動自在とした押圧部材の垂直移動距離を計測
して沈下深さを求めることもできる。In addition, the sliding part of the tip of the pressing member with the gravity dehydration cake is as follows.
In addition to the sled shapes shown in Figures 1, 3, and 5, there is a cylinder 6 that rotates in the running direction of the filter cloth heddle as shown in Figure 6,
It can be a disk, a sphere, etc. (not shown). The sinking depth can also be determined by measuring the vertical movement distance of a pressing member that is vertically movable.
第５図に示す装置を用いて、出力比Ｘ ／ Ｘ ｏを求
めたが、その時のへルトプレスの運転条件は表−１に示
す通りであり、第５図に示した装置の仕様及び計測結果
は表−２に示す通りであった。The output ratio X/Xo was determined using the device shown in Figure 5. The operating conditions of the Helt press at that time were as shown in Table 1, and the specifications and measurement results of the device shown in Figure 5. were as shown in Table-2.
表−２に示したｘ ／ ｘ、の値０．４２は、従来の回
分式法などで測定しておいた最適汚泥強度を示ずｘ ／
ｘ ０値と比較して、差があれば表−１の凝集剤添加
率、攪拌槽羽根回転数、ろ布スピード等を調節すること
によって修正される。The value of x /
If there is a difference compared to the x 0 value, it is corrected by adjusting the flocculant addition rate, stirring tank blade rotation speed, filter cloth speed, etc. shown in Table 1.
以上述べたように本発明によれば、従来計測が困難であ
ったヘルドブレス型脱水機の重力脱水ケーキの強度を、
サンプリング作業を行うことなしに、精度良くかつ連続
的に、しかも容易に知ることができ、ヘルドプレス脱水
の運転管理に有効に利用することができるものである。As described above, according to the present invention, the strength of the gravity-dehydrated cake of a held breath type dehydrator, which has been difficult to measure in the past, can be measured.
This information can be obtained accurately, continuously, and easily without any sampling work, and can be effectively used for operational management of held press dewatering.
第１図は本発明の装置の一例を示す説明図、第２図は第
１図の回転角θ、とＸ。−Ｘとの関係を示す線図、第３
図は本発明の装置の一例を示す説明図、第４図は第３図
の回転角θ。とＸ。との関係を示す線図、第５図は本発
明の装置の一例を示す全体斜視図、第６回は押圧部材の
摺動先端部の一例を示す説明図である。
１０．１−１・・・押圧部材、２・・・回転軸、３・・
・ろ布ヘルド、４・・・重力脱水ケーキ、５・・・回転
角検出装置、６・・・円筒、ＷＱ、Ｗ、・・・カウンタ
バランス、θ。、θ１・・・回転角、Ｘ・・・沈下深さ
、Ｘｏ・・・重力脱水ケーキ厚さ。
０−ＸFIG. 1 is an explanatory diagram showing an example of the apparatus of the present invention, and FIG. 2 shows the rotation angles θ and X of FIG. - Diagram showing the relationship with X, 3rd
The figure is an explanatory diagram showing an example of the device of the present invention, and FIG. 4 shows the rotation angle θ of FIG. 3. and X. FIG. 5 is an overall perspective view showing an example of the device of the present invention, and No. 6 is an explanatory view showing an example of the sliding tip of the pressing member. 10.1-1... Pressing member, 2... Rotating shaft, 3...
- Filter cloth held, 4...Gravity dehydration cake, 5...Rotation angle detection device, 6...Cylinder, WQ, W,...Counter balance, θ. , θ1...Rotation angle, X...Sinking depth, Xo...Gravity dehydration cake thickness. 0-X
Claims (4)
力脱水ケーキの厚さｘ＿０を計測すると共に、該走行す
る重力脱水ケーキと摺動する所定の押圧力を付与した押
圧部材の沈下深さｘを計測し、これらの出力比ｘ／ｘ＿
０を強度の指標とすることを特徴とする重力脱水ケーキ
強度の測定方法。(1) Measure the thickness x_0 of the gravity dewatering cake running in the gravity dewatering section of the belt press type dehydrator, and the sinking depth of the pressing member that slides on the traveling gravity dewatering cake and applies a predetermined pressing force. Measure x and calculate their output ratio x/x_
A method for measuring gravity dehydration cake strength, characterized in that 0 is used as an index of strength.
ケーキの厚さを計測するセンサを設け、さらに走行する
重力脱水ケーキと摺動する所定の押圧力を付与しうる押
圧部材をケーキ中に沈下可能に配備したことを特徴とす
る重力脱水ケーキ強度測定装置。(2) A sensor is installed in the gravity dewatering section of the belt press type dehydrator to measure the thickness of the gravity dehydrated cake, and a pressing member that can apply a predetermined pressing force to slide on the traveling gravity dehydrated cake is installed during the cake. A gravity dehydration cake strength measuring device characterized by being installed so that it can sink.
が押圧部材の回転角として表示されるものである特許請
求の範囲第２項記載の重力脱水ケーキ強度測定装置。(3) The gravity dehydration cake strength measuring device according to claim 2, wherein the pressing member is rotatable, and the sinking depth thereof is displayed as the rotation angle of the pressing member.
前記押圧部材の押圧力をゼロに調整したものである特許
請求の範囲第２項又は第３項記載の重力脱水ケーキ強度
測定装置。(4) A sensor that measures the thickness of the gravity dehydration cake,
The gravity dehydration cake strength measuring device according to claim 2 or 3, wherein the pressing force of the pressing member is adjusted to zero.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61192858A JPS6352799A (en) | 1986-08-20 | 1986-08-20 | Method and instrument for measuring strength of gravity dehydrated cake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61192858A JPS6352799A (en) | 1986-08-20 | 1986-08-20 | Method and instrument for measuring strength of gravity dehydrated cake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6352799A true JPS6352799A (en) | 1988-03-05 |
| JPH0224199B2 JPH0224199B2 (en) | 1990-05-28 |
Family
ID=16298142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61192858A Granted JPS6352799A (en) | 1986-08-20 | 1986-08-20 | Method and instrument for measuring strength of gravity dehydrated cake |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6352799A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008533434A (en) * | 2005-03-21 | 2008-08-21 | エレクトロラックス ホーム プロダクツ コーポレイション ナームロゼ フェンノートシャップ | Refrigerator with take-out container for carbonated water |
| JP2010032433A (en) * | 2008-07-30 | 2010-02-12 | Nippon Road Co Ltd:The | Hardness testing and measuring instrument of measured object article |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021024478A1 (en) * | 2019-08-08 | 2021-02-11 | 日本電信電話株式会社 | Information presentation device, information presentation system, information presentation method, and information presentation program |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6028596A (en) * | 1983-07-20 | 1985-02-13 | 山陽国策パルプ株式会社 | Slice of headbox |
-
1986
- 1986-08-20 JP JP61192858A patent/JPS6352799A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6028596A (en) * | 1983-07-20 | 1985-02-13 | 山陽国策パルプ株式会社 | Slice of headbox |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008533434A (en) * | 2005-03-21 | 2008-08-21 | エレクトロラックス ホーム プロダクツ コーポレイション ナームロゼ フェンノートシャップ | Refrigerator with take-out container for carbonated water |
| JP2010032433A (en) * | 2008-07-30 | 2010-02-12 | Nippon Road Co Ltd:The | Hardness testing and measuring instrument of measured object article |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0224199B2 (en) | 1990-05-28 |
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