JPH01194239A - Regenerating method for cathode-ray tube - Google Patents
- ️Fri Aug 04 1989
JPH01194239A - Regenerating method for cathode-ray tube - Google Patents
Regenerating method for cathode-ray tubeInfo
-
Publication number
- JPH01194239A JPH01194239A JP63016160A JP1616088A JPH01194239A JP H01194239 A JPH01194239 A JP H01194239A JP 63016160 A JP63016160 A JP 63016160A JP 1616088 A JP1616088 A JP 1616088A JP H01194239 A JPH01194239 A JP H01194239A Authority
- JP
- Japan Prior art keywords
- ray tube
- nitric acid
- acid solution
- panel
- funnel Prior art date
- 1988-01-26 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 14
- 230000001172 regenerating effect Effects 0.000 title claims description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 22
- 239000011521 glass Substances 0.000 claims abstract description 16
- 238000004064 recycling Methods 0.000 claims description 2
- 238000004090 dissolution Methods 0.000 abstract description 2
- 238000011069 regeneration method Methods 0.000 abstract description 2
- 230000008929 regeneration Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
PURPOSE:To shorten the time for dissolution and separate funnel from the panel safely for regeneration by immersing a cathode-ray tube in nitric acid solution, and dissolving frit glass while compressed air is jetted out of a nozzle. CONSTITUTION:The neck 3 of the funnel 2 of a cathode-ray tube is fixed by a neck chuck 10 and immersed in nitric acid solution 6 with the panel 1 facing down. The cathode-ray tube must be filled with air. Compressed air is jetted out of a nozzle 7 of a piping 8 to cause the nitric acid solution 6 a stream, and thereby frit glass 5 is dissolved.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はパネルとファンネルをフリット硝子で一体とし
た後のブラウン管の分離・再生方法に関するものである
。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for separating and recycling a cathode ray tube after a panel and a funnel are integrated with frit glass.
カラーブラウン管は、第2図に示す如く、主として、パ
ネル1とファンネル2と称される硝子より構成されてお
り、ファンネル2の先端にはネック3と排気管4と称さ
れる部分がある。内面に蛍光膜等を塗布形成されたパネ
ル1と内面に黒鉛を塗布されたファンネル2は第3図に
示す如く、双方のシール面にフリット硝子5を介在させ
400℃以上の熱処理を施し、結晶化し一体としている
。この後、ファンネル2のネック3部分に電子銃を封入
し、排気、電子銃の電気的な処理等を施し、カラーブラ
ウン管として完成される。しかしながら、上記処理後に
調査・分析を実施する必要が多々あるため一度、一体化
したパネルとファンネルを分離することがある。さらに
分離したパネルとファンネルを再生し、再度、上記処理
を施しカラーブラウン管として完成させることもある。As shown in FIG. 2, a color cathode ray tube is mainly composed of glass called a panel 1 and a funnel 2, and the funnel 2 has a neck 3 and an exhaust pipe 4 at its tip. As shown in FIG. 3, the panel 1 whose inner surface is coated with a fluorescent film, etc. and the funnel 2 whose inner surface is coated with graphite are heat-treated at 400°C or higher with a frit glass 5 interposed between the sealing surfaces of both to form crystals. It has become a unified whole. Thereafter, an electron gun is enclosed in the neck 3 of the funnel 2, and the electron gun is subjected to exhaust, electrical processing, etc., and a color cathode ray tube is completed. However, since it is often necessary to conduct investigations and analyzes after the above processing, the integrated panel and funnel may be separated once. Furthermore, the separated panel and funnel may be recycled and subjected to the above treatment again to complete a color cathode ray tube.
パネルとファンネルを分離させるためには、フリット硝
子を溶解する必要があり、通常10%〜12%の硝酸溶
液が使用される。従来は、第6図のように貯槽14中の
硝酸溶液6をポンプ13により配管8を通しノズル7か
ら高圧で噴出させて、架台12上のブラウン管のパネル
1とファンネル2の間に介在するフリット硝子5を溶解
する方法か、第7図のように硝酸溶液6中にブラウン管
をパネルlを下方にして浸漬させ、超音波振動子15に
より硝酸溶液6に振動を与えて溶解する方法が採用され
ていた。In order to separate the panel and funnel, it is necessary to dissolve the frit glass, and typically a 10% to 12% nitric acid solution is used. Conventionally, as shown in FIG. 6, the nitric acid solution 6 in the storage tank 14 is passed through the piping 8 by the pump 13 and jetted out from the nozzle 7 at high pressure, and the frit interposed between the panel 1 and the funnel 2 of the cathode ray tube on the stand 12 is sprayed. Either the glass 5 is dissolved, or the cathode ray tube is immersed in a nitric acid solution 6 with the panel 1 facing downward, and the nitric acid solution 6 is vibrated by an ultrasonic vibrator 15 to dissolve it, as shown in FIG. was.
上記ノズル噴出方式では、硝酸溶液が飛散しやすく安全
面を充分考慮しなければならず、高額な装置となると同
時に装置の耐久性も劣化する。また、超音波方式ではパ
ネルとファンネルの間へ硝酸溶液が入り込みにくく、し
たがって溶解に時間を要し、実用的でないという問題が
あった。In the above-mentioned nozzle jetting method, the nitric acid solution tends to scatter and safety must be taken into consideration, resulting in an expensive device and at the same time deteriorating the durability of the device. Furthermore, in the ultrasonic method, it is difficult for the nitric acid solution to enter between the panel and the funnel, so it takes time to dissolve the solution, making it impractical.
本発明のブラウン管の再生方法は、ブラウン管を硝酸溶
液中に浸漬させ、硝酸溶液中に設けたノズルから圧縮空
気を噴出させ、フリット硝子を溶解することを特徴とす
る。かかる方法により溶解時間を短縮させ、また硝酸溶
液を飛散させることもないので安価で安全にブラウン管
のパネルとファンネルを分離再生することが可能となる
。The method for regenerating a cathode ray tube of the present invention is characterized in that the cathode ray tube is immersed in a nitric acid solution, and compressed air is jetted out from a nozzle provided in the nitric acid solution to dissolve the frit glass. This method shortens the dissolution time and does not scatter the nitric acid solution, making it possible to separate and regenerate the cathode ray tube panel and funnel safely at low cost.
以下本発明について図面により説明する。第1図は本発
明の一実施例を説明するための図である。ブラウン管は
、ファンネル2のネック3部分をネックチャック10に
゛より固定し、パネル1を下方にして濃度10〜12%
の硝酸溶液6中に浸漬させる。液面はシール部が充分浸
漬する位置に調整する。処理するブラウン管が真空排気
後のものであるならば、ネック3あるいは排気管4を破
壊してプラウ管内に空気を流入させておく必要がある。The present invention will be explained below with reference to the drawings. FIG. 1 is a diagram for explaining one embodiment of the present invention. For the cathode ray tube, the neck 3 of the funnel 2 is fixed to the neck chuck 10, and the density is 10 to 12% with the panel 1 facing downward.
nitric acid solution 6. Adjust the liquid level so that the seal part is fully immersed. If the cathode ray tube to be processed has been evacuated, it is necessary to destroy the neck 3 or exhaust pipe 4 to allow air to flow into the plow tube.
硝酸溶液6中のブラウン管の周囲には、配管8が設けら
れており、配管8には等間隔でノズル7が具備されてい
る。ノズル7の上下位置は、シール部と一致させる。配
管8中に具備された弁9を作動させることによりノズル
7がら圧縮空気が噴出し、硝酸溶液6に流れを与える。A pipe 8 is provided around the cathode ray tube in the nitric acid solution 6, and the pipe 8 is equipped with nozzles 7 at equal intervals. The vertical position of the nozzle 7 is made to coincide with the seal portion. By operating a valve 9 provided in the pipe 8, compressed air is blown out from the nozzle 7, giving a flow to the nitric acid solution 6.
通常シール部のフリット硝子5の厚さは0.3m+n以
下であるため、浸漬のみでは硝酸の入り込みに時間かが
かるが、この方法であれば、容易に入り込み、フリット
硝子5の溶解も急速におこなわれる。シール面幅の約1
/3程度溶解した時点でブラウン管を取り出し、パネル
1側より温度差40℃〜45℃の温水と冷水を交互にシ
ャワーして熱衝撃により分離させる。Normally, the thickness of the frit glass 5 in the seal part is 0.3 m+n or less, so it takes time for nitric acid to penetrate by dipping alone, but with this method, it penetrates easily and dissolves the frit glass 5 quickly. It will be done. Approximately 1 of the seal surface width
When the solution has melted by about 1/3, the cathode ray tube is taken out, and hot water and cold water with a temperature difference of 40° C. to 45° C. are alternately showered from the panel 1 side to cause separation by thermal shock.
第4図および第5図は、分離後同様の装置によリパテル
1、ファンネル2を各々パネルチャック11、ネックチ
ャック10で保持してシール面を硝酸溶液6中に浸漬さ
せノズル7から圧縮空気を噴出させることによりパネル
1およびファンネル2に残ったフリット硝子を短時間で
溶解し、各々を再生させる方法を示している。4 and 5 show that after separation, the repatel 1 and the funnel 2 are held by a panel chuck 11 and a neck chuck 10, respectively, and the sealing surfaces are immersed in a nitric acid solution 6, and compressed air is supplied from a nozzle 7. A method is shown in which the frit glass remaining on the panel 1 and the funnel 2 is dissolved in a short time by ejecting it, and each is regenerated.
本発明のブラウン管の再生方法を採用することにより、
前述の硝酸溶液をノズルがら噴出させる方法とほぼ同じ
時間で、フリット硝子を溶解することが可能となり、安
全で安価な装置によりブラウン管の再生を行なうのが可
能となる。By adopting the cathode ray tube regeneration method of the present invention,
It becomes possible to dissolve the frit glass in approximately the same time as the method described above in which a nitric acid solution is jetted through a nozzle, and it becomes possible to regenerate cathode ray tubes using safe and inexpensive equipment.
第1図は本発明ので実施例を示す正面図、第2図はブラ
ウン管の外観図、第3図はシール部の断面拡大図、第4
図および第5図はパネルおよびファンネルの分離後のフ
リット硝子の除去再生方法を示す正面図、第6図は従来
の硝酸溶液噴出方式の説明図、第7図は従来の超音波方
式の説明図である。
1・・・ブラウン管パネル、2・・・ブラウン管ファン
ネル、3・・・ブラウン管ネック、4・・・排気管、5
・・・フリット硝子、6・・・硝酸溶液、7・・・ノズ
ル、8・・・配管、9・・・弁、10・・・ネックチャ
ック、11・・・パネルチャック、12・・・架台、1
3・・・ポンプ、14・・・貯槽、15・・・超音波振
動子。Fig. 1 is a front view showing an embodiment of the present invention, Fig. 2 is an external view of a cathode ray tube, Fig. 3 is an enlarged sectional view of a seal portion, and Fig. 4 is a front view showing an embodiment of the present invention.
Fig. 5 and Fig. 5 are front views showing a method for removing and regenerating frit glass after separation of the panel and funnel, Fig. 6 is an explanatory diagram of the conventional nitric acid solution jetting method, and Fig. 7 is an explanatory diagram of the conventional ultrasonic method. It is. 1... CRT panel, 2... CRT funnel, 3... CRT neck, 4... Exhaust pipe, 5
... Frit glass, 6 ... Nitric acid solution, 7 ... Nozzle, 8 ... Piping, 9 ... Valve, 10 ... Neck chuck, 11 ... Panel chuck, 12 ... Frame ,1
3...Pump, 14...Storage tank, 15...Ultrasonic vibrator.
Claims (1)
【特許請求の範囲】[Claims]
パネルとファンネルがフリット硝子で一体とされている
ブラウン管からパネルとファンネルを分離し再生する方
法において、ブラウン管を硝酸溶液中に浸漬させながら
硝酸溶液中に設けたノズルより圧縮空気を噴出させフリ
ット硝子を溶解することを特徴とするブラウン管の再生
方法。In a method of separating and regenerating the panel and funnel from a cathode ray tube in which the panel and funnel are integrated with frit glass, compressed air is jetted out from a nozzle installed in the nitric acid solution while the cathode ray tube is immersed in a nitric acid solution to remove the frit glass. A method for recycling cathode ray tubes, which involves dissolving them.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63016160A JPH01194239A (en) | 1988-01-26 | 1988-01-26 | Regenerating method for cathode-ray tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63016160A JPH01194239A (en) | 1988-01-26 | 1988-01-26 | Regenerating method for cathode-ray tube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01194239A true JPH01194239A (en) | 1989-08-04 |
Family
ID=11908758
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63016160A Pending JPH01194239A (en) | 1988-01-26 | 1988-01-26 | Regenerating method for cathode-ray tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01194239A (en) |
Cited By (3)
* Cited by examiner, † Cited by third partyPublication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5948596A (en) * | 1997-05-27 | 1999-09-07 | Kodak Polychrome Graphics Llc | Digital printing plate comprising a thermal mask |
JP2000294143A (en) * | 1999-04-02 | 2000-10-20 | Matsushita Electric Ind Co Ltd | Separating method of cathode ray tube from image display panel, cutting method, and separating device |
KR100433447B1 (en) * | 2000-04-13 | 2004-05-28 | 마쯔시다덴기산교 가부시키가이샤 | CRT bulb regenerating method |
-
1988
- 1988-01-26 JP JP63016160A patent/JPH01194239A/en active Pending
Cited By (4)
* Cited by examiner, † Cited by third partyPublication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5948596A (en) * | 1997-05-27 | 1999-09-07 | Kodak Polychrome Graphics Llc | Digital printing plate comprising a thermal mask |
JP2000294143A (en) * | 1999-04-02 | 2000-10-20 | Matsushita Electric Ind Co Ltd | Separating method of cathode ray tube from image display panel, cutting method, and separating device |
KR100433447B1 (en) * | 2000-04-13 | 2004-05-28 | 마쯔시다덴기산교 가부시키가이샤 | CRT bulb regenerating method |
US6752675B2 (en) | 2000-04-13 | 2004-06-22 | Matsushita Electric Industrial Co., Ltd. | Method for recycling cathode ray tube bulb |
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