Patent US3975228A successfully refreshed from Google Patents.
US3975228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drying method and plant which utilize flame jet
Assignee: Yasunaga Riken Co Ltd
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Filing: 1975-02-28
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Granted: 1976-08-17
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Expires: 1995-02-28
Abstract
Abstract A drying plant utilizing a flame jet comprises a jet burner supporting device which is provided over a treatment tank, and a sound arresting device which is formed at a burner inserting port in the upper surface of the treatment tank. A jet burner drawn out of the treatment tank is inclined to bring the fore end of the burner close to an ignition device, thus to ignite the burner. While observing the ignited burner externally through a transparent tube, combustion is controlled to establish the perfect combustion. Loud noises at the adjustment of the combustion are prevented by the sound arresting device from being given forth to the outside. A matter to-be-dried, such as paper manufacture sludge, supplied into the treatment tank is crushed by flames of the jet burner at high temperature and at high speed without being burnt. The treated matter is taken out as the dried matter.
Inventors
- 👤 Yoshikazu Yasunaga
- 👤 Zenjiro Hokao
- 👤 Koji Sakusabe
- 👤 Yoshimitsu Tago
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:23
CPC Classifications
F; F26; F26B; F26B3/00; F26B3/18; F26B23/00; F26B23/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
210 words
A drying plant in which a flame jet burner is inserted into a treatment tank containing therein a matter to-be-dried, comprising: a. a feeder which continuously supplies said matter to-be-dried into said treatment tank; b. said treatment tank being provided on one side with said feeder for said matter to-be-dried, being provided on the other side with a duct for discharging the treated matter with the drying completed, and being provided in its upper surface with an inserting port for inserting said flame jet burner; c. a jet burner supporting device which is provided over said treatment tank, and which includes endless chain drive means to support said jet burner in a manner to freely move it up and down and means to incline said jet burner at an ascent position thereof; d. sound arresting means which consists of bellows provided around said jet burner and a transparent tube provided at said inserting port in said upper surface of said tank; e. a burner ignition device which is provided at a sideward position on said upper surface of said treatment tank; and f. a collecting device which is joined to said duct in order to collect the dried and treated matter to be discharged through said duct to the outside.
Claim 2
Dependent Claim
210 words
A drying plant in which a flame jet burner is inserted into a treatment tank containing therein a matter to-be-dried, comprising: a. a feeder which continuously supplies said matter to-be-dried into said treatment tank; b. said treatment tank being provided on one side with said feeder for said matter to-be-dried, being provided on the other side with a duct for discharging the treated matter with the drying completed, and being provided in its upper surface with an inserting port for inserting said flame jet burner; c. a jet burner supporting device which is provided over said treatment tank, and which includes endless chain drive means to support said jet burner in a manner to freely move it up and down and means to incline said jet burner at an ascent position thereof; d. sound arresting means which consists of bellows provided around said jet burner and a transparent tube provided at said inserting port in said upper surface of said tank; e. a burner ignition device which is provided at a sideward position on said upper surface of said treatment tank; and f. a collecting device which is joined to said duct in order to collect the dried and treated matter to be discharged through said duct to the outside.
Claim 3
Dependent Claim
67 words
The drying plant according to claim 1, wherein said bellows is a bellows tube while said transparent tube is a heat resisting one, and wherein when said jet burner is lowered down to an intermediate position of said treatment tank, the underside of said bellows tube and the upside of said transparent tube come into pressed contact to prevent noises from being given forth to the outside.
Claim 4
Dependent Claim
24 words
The drying plant according to claim 1, wherein said jet burner is supported by said supporting device with a flame jet port facing downwards.
Claim 5
Dependent Claim
32 words
The drying plant according to claim 1, wherein said treatment tank has a double structure of inner and outer cylinders, and an interspace between said cylinders is used as a cooling jacket.
Claim 6
Dependent Claim
48 words
The drying plant according to claim 1, wherein said duct comprises a rise section which has an identical diameter up to a predetermined height, a reduced section which adjoins to said rise section, and a descent section which is connected with a bent section and said collecting device.
Claim 7
Dependent Claim
69 words
The drying plant according to claim 1, wherein said supporting device comprises a slide device which is guided by four rails, and supporting shafts for suspending said jet burner as are provided inside said slide device, the burner inclining means being an air cylinder which inclines the burner body by pushing an upper part of said jet burner, said endless chain drive means being extended over said slide device.
Claim 8
Dependent Claim
50 words
The drying plant according to claim 1, wherein a pressed contact seat having an inverted cone-shaped periphery is secured to an intermediate position of said jet burner, while a conical receiving seat is formed at said burner inserting port of said treatment tank in correspondence with said pressed contact seat.
Claim 9
Dependent Claim
26 words
The drying plant according to claim 1, wherein said collecting device comprises a collector and a cyclone which adjoin to a descent section of said duct.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-17 | 1980-02-16 | 1980-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-17 | 1984-02-16 | 1984-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-17 | 1988-02-16 | 1988-08-17 | $7700.00 | Window Closed / Lapsed |