JPH0510963B2 - - Google Patents
Info
- Publication number
- JPH0510963B2 JPH0510963B2 JP6770985A JP6770985A JPH0510963B2 JP H0510963 B2 JPH0510963 B2 JP H0510963B2 JP 6770985 A JP6770985 A JP 6770985A JP 6770985 A JP6770985 A JP 6770985A JP H0510963 B2 JPH0510963 B2 JP H0510963B2
- Authority
- JP
- Japan
- Prior art keywords
- air
- filter
- bag filter
- chamber
- injection nozzle
- 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 - Fee Related
Links
- 239000000843 powder Substances 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 238000007664 blowing Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 description 11
- 238000009423 ventilation Methods 0.000 description 7
- 238000001035 drying Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010981 drying operation Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 238000005243 fluidization Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はバグフイルタを具えた流動層装置にお
いて、バグフイルタの圧力損失を検出する測定ノ
ズルの閉塞を防止する装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a device for preventing blockage of a measurement nozzle for detecting pressure loss of a bag filter in a fluidized bed apparatus equipped with a bag filter.
（従来の技術）
流動層乾燥機や流動層造粒機等の流動層装置に
おいては、被処理材料中の微細な粉体や、被処理
材料にコーテイングされずに微粉となつたコーテ
イング材が、乾燥室内を上昇する熱気流に浮遊し
てこの気流と共に上昇するので、この微粉が熱気
流と共に機外に排出することを抑えるために、乾
燥室の上部にバグフイルタが具えられていてこれ
によつて上昇する熱気流中から微粉を捕集するよ
うになつている。そして、このバグフイルタが時
間の経過と共に目詰まりを起こし、圧力損失が次
第に大きくなつて、通風能力が低下し、やがては
作業不能となる。そのため、流動層装置にはフイ
ルタ室と排気室との間にフイルタの圧力損失を検
出する検出器を取付け、これによつて、フイルタ
の通風能力の変化を検知して、通風能力が一定値
にまで低下する毎にバグフイルタの目塞まりを防
止する方策がとられている。(Prior Art) In a fluidized bed device such as a fluidized bed dryer or a fluidized bed granulator, fine powder in the material to be treated or a coating material that has become a fine powder without being coated on the material to be treated, Since fine powder floats in the hot air current rising in the drying chamber and rises with this air flow, a bag filter is installed at the top of the drying chamber to prevent this fine powder from being discharged to the outside of the machine along with the hot air flow. It is designed to collect fine particles from rising hot air currents. This bag filter becomes clogged with the passage of time, pressure loss gradually increases, ventilation ability decreases, and eventually work becomes impossible. Therefore, the fluidized bed equipment is equipped with a detector that detects the pressure loss of the filter between the filter chamber and the exhaust chamber, and this detects changes in the ventilation capacity of the filter and maintains the ventilation capacity at a constant value. Measures are taken to prevent the bug filter from becoming clogged every time the temperature drops to .
ところで、この場合において、既に述べた様に
乾燥室には微粉が浮遊しているので、これがフイ
ルター室側の検出器の取付管に入り込むため、検
出が妨害されるのである。 By the way, in this case, as mentioned above, fine powder is floating in the drying chamber, and this enters the mounting tube of the detector on the filter chamber side, thereby interfering with detection.
従来も、これに対する対策として取付管の開口
端を下向きに傾斜させて取付ける方法が試みられ
た。しかしながらこの方式では、微粉が取付管に
入り込む量は多くはないものの、測定ノズル内に
次第に堆積するため、測定値に誤差を生じること
となつて、作業能率を低下させたのである。 Conventionally, as a countermeasure against this problem, a method has been attempted in which the opening end of the mounting pipe is inclined downward. However, with this method, although the amount of fine powder that enters the attachment tube is not large, it gradually accumulates inside the measurement nozzle, causing errors in measurement values and reducing work efficiency.
（問題点を解決するための手段）
本発明は上記した点に鑑みてなされたものであ
つて、バグフイルタに対して排気室側から一定時
間毎に高圧空気を吹き付けて、バグフイルタの目
塞まりを除去すると共にその高圧空気の一部を検
出器の測定ノズルに導いて、取付管内に入り込む
微粉を一定時間毎に吹き出すことによりバグフイ
ルタの圧力損失を常に正確に検出し、以つて一定
の通風能力を確保して、作業能率を高水準に保持
せしめるものである。(Means for Solving the Problems) The present invention has been made in view of the above-mentioned points, and it blows high-pressure air against the bag filter from the exhaust chamber side at regular intervals to prevent clogging of the bag filter. At the same time, a part of the high-pressure air is guided to the measuring nozzle of the detector, and the fine powder that has entered the installed pipe is blown out at regular intervals. This allows the pressure loss of the bag filter to be detected accurately at all times, thereby maintaining a constant ventilation capacity. This is to ensure that work efficiency is maintained at a high level.
（実施例）
以下、本発明を図示の実施例に基づいて具体的
に説明する。(Examples) Hereinafter, the present invention will be specifically described based on illustrated examples.
図は流動層乾燥機に適用した一例を示したもの
で、図中符号１は流動室、２はフイルター室、３
は排気室、４は給気室であり、５はバグフイルタ
である。これらは通常の流動層乾燥機と同様であ
つて、流動室１の底面には通気板６が張設されて
いて、ここから流動室１内へ熱風を吹き上げるよ
うになつている。 The figure shows an example of application to a fluidized bed dryer, where 1 is a fluidized chamber, 2 is a filter chamber, and 3 is a fluidized bed dryer.
is an exhaust chamber, 4 is an air supply chamber, and 5 is a bag filter. These are similar to ordinary fluidized bed dryers, and a ventilation plate 6 is provided on the bottom of the fluidization chamber 1, from which hot air is blown up into the fluidization chamber 1.
そして被乾燥材料は投入口７より流動室１に投
入され、ここで上記した熱風により乾燥されたの
ち取出口８より機外へ取出される。 The material to be dried is then introduced into the flow chamber 1 through the input port 7, where it is dried by the above-mentioned hot air, and then taken out of the machine through the output port 8.
一方フイルター室２内を上昇した空気はバグフ
イルタ５により浮遊する微粉を濾別されたのち排
気室３を経て機外へ排出される。 On the other hand, the air rising in the filter chamber 2 is filtered to remove floating fine particles by a bag filter 5, and then is discharged to the outside of the machine via an exhaust chamber 3.
この様に構成された流動層乾燥機に、バグフイ
ルタの圧力損失を検出するための検出器（圧力
計）を取り付けるものであつて、図中符号９は主
検出部、１０は副検出部である。又、符号１１は
検出器あであつて、主検出部９と副検出部１０に
よつて検出されたフイルター室２と排気室３との
間の圧力損失から、バグフイルタ５の目塞まりの
度合、云い換えればバグフイルタ５の通風能力の
低下を検知するものである。 A detector (pressure gauge) for detecting the pressure loss of the bag filter is attached to the fluidized bed dryer configured in this way, and in the figure, reference numeral 9 is a main detection section, and 10 is a sub-detection section. . Reference numeral 11 is a detector which detects the degree of clogging of the bag filter 5 from the pressure loss between the filter chamber 2 and the exhaust chamber 3 detected by the main detection section 9 and the sub-detection section 10. In other words, it detects a decrease in the ventilation capacity of the bug filter 5.
ところでこの主検出部９はフイルター室２に直
接取付けるのではなく、フイルター室２には取付
管１２を45度程度傾斜させて取付け、この取付管
１２に主検出部９を取付け、取付管１２内の圧力
を測定することにより、間接的にフイルター室２
内の圧力を測定するのである。 By the way, this main detection section 9 is not directly attached to the filter chamber 2, but is attached to the filter chamber 2 with a mounting tube 12 inclined at about 45 degrees. By measuring the pressure in the filter chamber 2,
It measures the pressure inside.
取付管１２にはまた、空気噴出ノズル１３が内
設されていて、ここから空気を噴き出すことによ
り取付管１２内に入り込む粉体をフイルター室２
に向けて吹き出すものである。 The mounting pipe 12 also has an air jet nozzle 13 installed therein, which blows out air to remove powder that enters the mounting pipe 12 into the filter chamber 2.
It is something that blows out towards.
排気室３にはバグフイルタ５に向けて高圧空気
の噴射ノズル１４が設けられている。 A high-pressure air injection nozzle 14 is provided in the exhaust chamber 3 toward the bag filter 5.
これはバグフイルタ５に高圧空気を噴き付けて
その力でバグフイルタ５に振動を与えて、これに
付着した粉体を払い落とし、目塞まりを除くもの
である。この操作は、適当な時間間隔をもつて行
ない、バグフイルタ５の通風能力が目立つて減少
しないうちにその目塞まりを除くのであるが、勿
論その開閉バルブ１５は検出器１１に連絡されて
いて、バグフイルタ５の圧力損失が設定値にまで
上昇するとその都度空気の噴射を行なうのであ
り、且つその操作は取付管１２の噴射ノズル１３
と同期的に行なわれるようになつているのであ
る。 This is done by blowing high-pressure air onto the bag filter 5 and applying vibration to the bag filter 5, thereby brushing off powder adhering to the bag filter 5 and removing clogging. This operation is carried out at appropriate time intervals to remove the blockage before the ventilation capacity of the bag filter 5 is noticeably reduced.Of course, the opening/closing valve 15 is connected to the detector 11, Air is injected each time the pressure loss of the bag filter 5 rises to a set value, and this operation is performed by the injection nozzle 13 of the attachment pipe 12.
It has come to be carried out synchronously.
（作用）
乾燥作用を行なう際は、噴射ノズル１４からバ
グフイルタ５に向けて高圧空気を噴射し、同時に
噴出ノズル１３から空気を噴き出させる。(Function) When performing the drying action, high-pressure air is injected from the injection nozzle 14 toward the bag filter 5, and at the same time, air is ejected from the injection nozzle 13.
するとバグフイルタ５は振動を与えられてこれ
に付着した粉体が払い落とされ、目塞まりが除か
れる。そして取付管１２内では噴出ノズル１３か
ら噴き出された空気によつて、管内に入りこんだ
粉体がフイルター室２内へ吹き入れられ、しかし
て管内は清澄になり、検出器１１が正常に作動す
るのである。 Then, the bag filter 5 is vibrated to shake off the powder adhering to it and remove the clogging. Then, inside the attachment tube 12, the powder that has entered the tube is blown into the filter chamber 2 by the air blown out from the jet nozzle 13, and the inside of the tube becomes clear and the detector 11 operates normally. That's what I do.
（効果）
以上詳述した様に本発明は、バグフイルタ５の
圧力損失を検出する主検出部９をフイルター室２
に約45度程度傾斜して取付けられた取付管１２に
取り付けると共にこの取付管１２には空気の噴出
ノズル１３を内設し、且つ、この噴出ノズル１３
をバグフイルタ５をパルス洗浄する噴射ノズル１
４と同期させたものである。(Effects) As described in detail above, the present invention has the main detection section 9 that detects the pressure loss of the bag filter 5 connected to the filter chamber 2.
It is attached to a mounting pipe 12 that is installed at an angle of about 45 degrees, and an air jet nozzle 13 is installed inside this mounting pipe 12.
The injection nozzle 1 pulse-cleans the bug filter 5
This is synchronized with 4.
従つて、主検出部９は取付管１２の内面に付着
する粉体を噴出ノズル１３より噴き出される空気
によつて取除かれるので、常に正常な常態で圧力
の測定がなされるのであり、しかも、この噴出ノ
ズル１３が作動している間はフイルター室２内の
圧力を検出することが出来ないが、この時は噴射
ノズル１４も作動していて圧力を検出することは
不必要であるから、結局、噴出ノズル１３は乾燥
作業に何ら支障をきたすことなく作動し、主検出
部９を正常に保つて、能率のよい乾燥作業を可能
にするのである。 Therefore, since the powder adhering to the inner surface of the attachment tube 12 is removed from the main detection part 9 by the air ejected from the ejection nozzle 13, the pressure can always be measured in a normal state. The pressure inside the filter chamber 2 cannot be detected while the injection nozzle 13 is operating, but at this time the injection nozzle 14 is also operating and it is unnecessary to detect the pressure. In the end, the jet nozzle 13 operates without any hindrance to the drying operation, keeps the main detection section 9 normal, and enables efficient drying operation.
第１図は本発明の一実施例を示す縦断面図、第
２図は要部を示す縦断面図である。
９；主検出部、１０；副検出部、１１；検出
器、１２；取付管、１３；噴出ノズル、１４；噴
射ノズル、１５；バルブ。
FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention, and FIG. 2 is a longitudinal sectional view showing the main parts. 9; Main detection part, 10; Sub-detection part, 11; Detector, 12; Attachment pipe, 13; Spray nozzle, 14; Spray nozzle, 15; Valve.
Claims (1)
角度をもつて取付管を取付けて、これに主検出器
を取付け、更に該取付管には空気噴出ノズルを内
設し、ここから空気を噴き出すことにより取付け
管に入り込む粉体を吹き出すようにし、排気室に
はバグフイルタに向けて空気の噴射ノズルを設け
ると共にこの噴射ノズルと上記噴出ノズルから同
期的に空気を噴出させるものであることを特徴と
するバグフイルタの圧力損失を検出する機構を具
えた流動層装置。1. Attach a mounting pipe to the filter chamber of the fluidized bed device at an angle of inclination of approximately 45 degrees, and attach the main detector to this.Furthermore, install an air jet nozzle inside the mounting pipe, and blow air from here. Powder that enters the attached pipe is blown out by blowing out, and an air injection nozzle is provided in the exhaust chamber toward the bag filter, and air is synchronously ejected from this injection nozzle and the above-mentioned injection nozzle. A fluidized bed device equipped with a mechanism to detect the pressure loss of a bag filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6770985A JPS61222519A (en) | 1985-03-29 | 1985-03-29 | Fluidized bed apparatus equipped with mechanism for detecting pressure loss of bag filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6770985A JPS61222519A (en) | 1985-03-29 | 1985-03-29 | Fluidized bed apparatus equipped with mechanism for detecting pressure loss of bag filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61222519A JPS61222519A (en) | 1986-10-03 |
| JPH0510963B2 true JPH0510963B2 (en) | 1993-02-12 |
Family
ID=13352756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6770985A Granted JPS61222519A (en) | 1985-03-29 | 1985-03-29 | Fluidized bed apparatus equipped with mechanism for detecting pressure loss of bag filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61222519A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014035313A (en) * | 2012-08-10 | 2014-02-24 | Amano Corp | Clogging prevention device for pressure detection pipe |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01307423A (en) * | 1988-06-06 | 1989-12-12 | Matsui Mfg Co | Dust collecting device |
-
1985
- 1985-03-29 JP JP6770985A patent/JPS61222519A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014035313A (en) * | 2012-08-10 | 2014-02-24 | Amano Corp | Clogging prevention device for pressure detection pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61222519A (en) | 1986-10-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |