JPS6310517Y2 - - Google Patents
Info
- Publication number
- JPS6310517Y2 JPS6310517Y2 JP1976023451U JP2345176U JPS6310517Y2 JP S6310517 Y2 JPS6310517 Y2 JP S6310517Y2 JP 1976023451 U JP1976023451 U JP 1976023451U JP 2345176 U JP2345176 U JP 2345176U JP S6310517 Y2 JPS6310517 Y2 JP S6310517Y2
- Authority
- JP
- Japan
- Prior art keywords
- powder
- electrode
- side wall
- window
- plate
- 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.)
- Expired
Links
- 239000000843 powder Substances 0.000 claims description 16
- 239000008187 granular material Substances 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000011889 copper foil Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000004033 plastic Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
【考案の詳細な説明】
本考案は粉粒体等の水分測定装置に関するもの
で、特に籾等の穀物用循環乾燥機の乾燥過程にお
ける穀物の水分をその高周波容量により連続的に
測定する実用的な装置を提供するものである。[Detailed description of the invention] This invention relates to a moisture measuring device for powder and granules, etc., and in particular, it is a practical device that continuously measures the moisture content of grains during the drying process of a circulation dryer for grains such as paddy using its high frequency capacity. The purpose is to provide a device that provides
第１図にこの目的のために従来より考案されて
いた例として、円筒型同軸電極と平板対向電極に
よる水分測定装置の構成を示す。 FIG. 1 shows, as an example conventionally devised for this purpose, the configuration of a moisture measuring device using a cylindrical coaxial electrode and a flat counter electrode.
第１図において、１は内部を粉粒体等が流動す
る缶体、２は循環用粉粒体等の通路、３は粉粒体
等の強制循環装置（ポンプ、パケツトコンベア
等）であり、粉粒体等は４の矢印の方向に安定し
て流動しているものとする。５および５′は高周
波容量による水分測定回路部、６および６′は電
極７および８と上記水分測定回路部５および５′
を接続する高周波ケーブルである。 In Fig. 1, 1 is a can body through which powder and granules flow, 2 is a passage for circulating powder and granules, and 3 is a forced circulation device (pump, packet conveyor, etc.) for powder and granules. It is assumed that the powder, granules, etc. are stably flowing in the direction of the arrow 4. 5 and 5' are moisture measuring circuit parts using high-frequency capacitance, and 6 and 6' are electrodes 7 and 8 and the moisture measuring circuit parts 5 and 5'.
This is a high frequency cable that connects the
電極７は２枚の金属板による平行電極、電極８
は金属の円筒と芯線による同軸電極である。 Electrode 7 is a parallel electrode made of two metal plates, electrode 8
is a coaxial electrode made of a metal cylinder and a core wire.
さて、かかる水分測定装置の第１条件として
は、電極にて検出する粉粒体の密度がその測定誤
差の内の重大な部分を占める。すなわち、安定し
た流動状態のまま水分を測定することが理想とな
る。しかしながら第１図に示した従来例の電極
は、構造上流通路に挿入しなくてはならず、その
挿入場所近辺の粉粒体の流通を乱し安定な測定が
困難となる。さらに、水分測定回路部５，５′と
の接続用ケーブル６，６′のもつ高周波容量も無
視できず、その経時変化、温度変化は総て水分測
定値の誤差となる。また粉粒体、特に穀物用乾燥
機内は相当の圧力が加わつているため、機械的強
度も要求される。このような種々の理由により、
第１図に示す従来例は実用性に乏しいものであつ
た。 Now, the first condition of such a moisture measuring device is that the density of the powder detected by the electrode accounts for a significant portion of the measurement error. In other words, it is ideal to measure moisture in a stable fluid state. However, the conventional electrode shown in FIG. 1 must be inserted into the upstream passage of the structure, which disturbs the flow of powder and granules in the vicinity of the insertion location, making stable measurement difficult. Furthermore, the high frequency capacitance of the cables 6, 6' for connection to the moisture measuring circuit sections 5, 5' cannot be ignored, and their changes over time and temperature all result in errors in the moisture measurement value. In addition, mechanical strength is also required because considerable pressure is applied to powder and granular materials, especially inside dryers for grains. Due to these various reasons,
The conventional example shown in FIG. 1 lacks practicality.
本考案は上記従来の問題点を全て解消するもの
で、第２図に本考案の一実施例を示し、以下第２
図に従つて本考案の説明を行う。第２図におい
て、１〜４は第１図に示したものと同じであり、
９は流動方向に沿つた側壁、１０は上記側壁９の
一部に設けた窓である。また１１は上記窓１０を
塞ぐように装着された平板電極、１２は内部に平
板電極１１、高周波容量測定回路部１３、電極１
１と回路部１３を接続するケーブル１４、静電シ
ールド板１５を持つ水分測定装置のケースを示
す。 The present invention solves all of the above-mentioned conventional problems, and one embodiment of the present invention is shown in Fig. 2.
The present invention will be explained according to the figures. In Figure 2, 1 to 4 are the same as shown in Figure 1,
9 is a side wall along the flow direction, and 10 is a window provided in a part of the side wall 9. Further, 11 is a flat plate electrode mounted so as to close the window 10, 12 is a flat plate electrode 11 inside, a high frequency capacitance measuring circuit section 13, and an electrode 1.
1 and a circuit section 13, and an electrostatic shield plate 15.
さらに１６は上記側壁９にケース１２を固定す
るためのねじである。なお前記電極１１は第３図
に示す如くケース１２の一側面に位置させケース
１２を側壁９に固定することにより窓１０を塞ぐ
構造となつている。 Furthermore, 16 is a screw for fixing the case 12 to the side wall 9. The electrode 11 is positioned on one side of the case 12 as shown in FIG. 3, and the case 12 is fixed to the side wall 9 so as to close the window 10.
第４図ａ，ｂは前述の平板電極１１の具体的構
成を示す図で、第４図ａ，ｂにおいて１７は金属
板であり、１７ａ，１７ｂとして示す如く櫛型形
状をもつ２枚の金属板にて構成される。１８およ
び１９は上記金属板１７の機械的保持および絶縁
の目的のための２枚のプラスチツク板、２０は外
部接続用の電極板で、２０ａ，２０ｂとして示す
如く導体２１を介して、各々上記２枚の櫛型金属
板１７ａ，１７ｂへ接続され、高周波ケーブル１
４は電極板２０へ接続される。 FIGS. 4a and 4b are diagrams showing the specific structure of the above-mentioned flat plate electrode 11. In FIGS. Consists of boards. 18 and 19 are two plastic plates for the purpose of mechanically holding and insulating the metal plate 17, and 20 is an electrode plate for external connection. The high frequency cable 1 is connected to two comb-shaped metal plates 17a and 17b.
4 is connected to the electrode plate 20.
また実用的な電極の構成方法としては、金属板
１７およびプラスチツク板１９をプリント基板の
銅箔および積層板で、プラスチツク板１８をプラ
スチツクシートで、電極板２０を金属板１７と同
様な銅箔で、導体２１をスルーホール技術により
メツキされた導体で構成するものが考えられる。 Further, as a practical method for configuring the electrodes, the metal plate 17 and the plastic plate 19 are made of copper foil and a laminated board of a printed circuit board, the plastic plate 18 is made of a plastic sheet, and the electrode plate 20 is made of the same copper foil as the metal plate 17. It is conceivable that the conductor 21 is formed of a conductor plated using through-hole technology.
さて、一般に平板電極の２極間の静電容量は、
その平板に対しての垂直方向の両側に存在する絶
縁物（誘電体）の種類により定まり、第２図に示
す平板電極１１の静電容量は、電極を構成する２
板の絶縁板、平板電極１１とシールド板１５間の
空気、および誘電体に相当する缶体１中を流動す
る粉粒体（穀物）によつて決まる。しかしなが
ら、空気の比誘導率は小さく、電極を構成する２
板の絶縁板はその体積が小さいことから、この平
板電極１１の検出する静電容量はほとんどが粉粒
体の比誘電率により決定され、粉粒体の比誘電率
はその水分により変化することより、平板電極１
１の静電容量を測定することにより粉粒体の水分
を測定することができる。 Now, in general, the capacitance between two electrodes of a flat plate electrode is
The capacitance of the flat plate electrode 11 shown in FIG.
It is determined by the insulating plate of the plate, the air between the plate electrode 11 and the shield plate 15, and the powder (grain) flowing in the can body 1, which corresponds to the dielectric. However, the specific inductivity of air is small, and the 2
Since the plate insulating plate has a small volume, the capacitance detected by the flat plate electrode 11 is determined mostly by the dielectric constant of the powder, and the dielectric constant of the powder changes depending on its moisture. Therefore, the flat electrode 1
By measuring the capacitance of No. 1, the moisture content of the powder can be measured.
本考案による構成によれば、第１図に示す従来
例のもつ問題点を解決できる。すなわち第１には
電極を流通路に挿入する必要がなく流動状態を乱
すことなく安定な測定ができる。また第２には、
高周波ケーブルを最小限の長さとすることがで
き、ケーブルの不安定性による測定誤差が小さく
できる。また平板電極は、両面が絶縁されたプリ
ント基板で構成したので、簡単な構成で機械的強
度が十分確保されると共に絶縁が確保され、より
安定した測定ができる。 According to the configuration according to the present invention, the problems of the conventional example shown in FIG. 1 can be solved. That is, firstly, there is no need to insert the electrode into the flow path, and stable measurement can be performed without disturbing the flow state. Also, secondly,
The length of the high frequency cable can be minimized, and measurement errors due to cable instability can be reduced. In addition, since the flat electrode was constructed from a printed circuit board with insulation on both sides, sufficient mechanical strength and insulation were ensured with a simple structure, allowing for more stable measurements.
このように本考案は多大の効果を有し、実用的
な水分測定装置を提供できる。また前述の説明は
穀物の水分測定を主体としてきたが、他の粉粒体
および液体であつても、密度が均一な状態で流動
している物に対して適用できることはもちろんで
ある。 As described above, the present invention has many effects and can provide a practical moisture measuring device. Furthermore, although the above explanation has mainly focused on measuring the moisture content of grains, it is of course applicable to other powders, granules, and liquids that are flowing and have a uniform density.
第１図は従来例による水分測定装置の構成図、
第２図は本発明の一実施例による水分測定装置の
構成図、第３図は第２図に示す水分測定装置にお
けるケースおよび電極の構成を示す斜視図、第４
図ａ，ｂは第２図に示す水分測定装置における平
板電極の具体的構成を示す平面図および側面図で
ある。
１……缶体、９……側壁、１０……窓、１１…
…平板電極、１２……ケース、１３……高周波容
量測定回路部、１７……金属板、１８，１９……
プラスチツク板。
Figure 1 is a configuration diagram of a conventional moisture measuring device.
FIG. 2 is a configuration diagram of a moisture measuring device according to an embodiment of the present invention, FIG. 3 is a perspective view showing the configuration of a case and electrodes in the moisture measuring device shown in FIG. 2, and FIG.
Figures a and b are a plan view and a side view showing a specific configuration of a flat electrode in the moisture measuring device shown in Figure 2. 1... Can body, 9... Side wall, 10... Window, 11...
...Plant electrode, 12...Case, 13...High frequency capacitance measurement circuit section, 17...Metal plate, 18, 19...
plastic board.
Claims (1)
の流動方向に沿つた側壁の一部に窓を設け、一
方、高周波容量測定回路を内蔵したケースの一側
面に、両面が絶縁された櫛型銅箔をもつプリント
基板で構成した平板電極を位置させ、この平板電
極が缶体側壁の窓を塞ぐように前記ケースを缶体
側壁に取付け、かつ、前記平板電極と高周波容量
測定回路を高周波ケーブルを介して接続した粉粒
体等の水分測定装置。 A window is provided on a part of the side wall along the flow direction of the powder, granular material, etc. of the can body through which the powder, granular material, etc. flows, and a window is provided on one side of the case containing a built-in high frequency capacitance measurement circuit. A flat electrode made of a printed circuit board with a comb-shaped copper foil is positioned, and the case is attached to the side wall of the can so that this flat electrode closes the window on the side wall of the can, and the flat electrode and high frequency capacitance are measured. Moisture measuring device for powder and granular materials, etc., with a circuit connected via a high-frequency cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1976023451U JPS6310517Y2 (en) | 1976-02-26 | 1976-02-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1976023451U JPS6310517Y2 (en) | 1976-02-26 | 1976-02-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS52114788U JPS52114788U (en) | 1977-08-31 |
| JPS6310517Y2 true JPS6310517Y2 (en) | 1988-03-29 |
Family
ID=28483372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1976023451U Expired JPS6310517Y2 (en) | 1976-02-26 | 1976-02-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6310517Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS491238A (en) * | 1972-04-17 | 1974-01-08 | ||
| JPS4912678A (en) * | 1972-05-09 | 1974-02-04 |
-
1976
- 1976-02-26 JP JP1976023451U patent/JPS6310517Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS491238A (en) * | 1972-04-17 | 1974-01-08 | ||
| JPS4912678A (en) * | 1972-05-09 | 1974-02-04 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS52114788U (en) | 1977-08-31 |
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