Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16J—PISTONS; CYLINDERS; SEALINGS
  • F16J15/00—Sealings
  • F16J15/16—Sealings between relatively-moving surfaces
  • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
  • F16J15/3404—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal
  • F16J15/3408—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface
  • F16J15/3412—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface with cavities
  • F16J15/342—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface with cavities with means for feeding fluid directly to the face
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16J—PISTONS; CYLINDERS; SEALINGS
  • F16J15/00—Sealings
  • F16J15/16—Sealings between relatively-moving surfaces
  • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
  • F16J15/3436—Pressing means
  • F16J15/3452—Pressing means the pressing force resulting from the action of a spring
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L23/00—Flanged joints
  • F16L23/02—Flanged joints the flanges being connected by members tensioned axially
  • F16L23/032—Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F27—FURNACES; KILNS; OVENS; RETORTS
  • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
  • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
  • F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
  • F27B7/22—Rotary drums; Supports therefor
  • F27B7/24—Seals between rotary and stationary parts
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F27—FURNACES; KILNS; OVENS; RETORTS
  • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
  • F27D99/00—Subject matter not provided for in other groups of this subclass
  • F27D99/0073—Seals

Definitions

• the present invention belongs to the field of the retorting apparatus used in the field of oil shale processing, in particular the invention relates to end sealing assemblies of the rotary kiln and the improvements of its end sealing.
• the rotary kiln is a drum with internally refractory lined parallel walls that rotates on four carrying rollers. There are openings at both ends of the rotary kiln for feeding the material to be processed (oil shale and ash) and releasing the semicoke and gaseous products.
• End sealings of the rotary kiln have the following purposes:
• Figure 1 depicts the technical solution of the end sealings of the existing rotary kiln in which a casing ring 1 ' is attached to the flange 12', which is attached to the outside of the rotating drum 15' of the rotary kiln, and the first casing ring 2' is attached to the flange 10', which is attached to the outside of the fixed input/output unit 17', and using appropriate attachment means, the second casing ring 3' is attached to the other side of the rotating casing ring 1 '.
• same position numbers with an apostrophe added are used with the same construction elements.
• the aim of the present invention is simplifying the existing technical solution and eliminating the following defects of its construction:
• the cast iron sealing rings are produced and formed out of at least four
• Fig 1 shows the construction of the end sealing known in the art that is used to connect the rotating drum and fixed input/output units of the rotary kiln;
• Fig 2 shows the construction of the end sealing assembly according to the present invention
• FIG. 3 shows the casing ring used in the end sealing according to the
• FIG. 4 shows the cut of the casing ring in which the construction of the
• FIG 2 depicts the connect node of the rotary 15 of the rotary kiln with
• the end sealing assembly of the rotary kiln includes an end sealing 16, which comprises a flange 10 attached to the fixed unit, a first casing ring 2, a rotating casing ring 1 , a second casing ring 3, a flange 12 attached to the rotating drum 15 and a fixed flange 5 that is connected to the flange 10, which is attached to the fixed input/output unit 17 with fixing devices that include a fixing bolt 7, fixing nuts and a spring 6 to press the casing rings 2, 3 of the end sealing assembly against the rotating casing ring 1. While making the end sealing, lubricant channels 8, 9 are formed between the first casing ring 2 and rotating casing ring 1 and between the second casing ring 3 and rotating casing ring 1.
• Both ends of the rotating drum of the rotary kiln have a flange 12 welded to it, in which there are openings for fixing devices 13 (for example stud bolts), which are used to fix the casing ring 1 to the flange 12.
• fixing devices 13 for example stud bolts
• Flange 12 has a break designed onto the side of the rotating casing ring 1 to support the casing ring while making the sealing
• Casing ring 1 is formed, for example, from ordinary steel. Grooves or hollows 81 , 91 for the lubricant (lubricating-sealing-cooling liquid) are made onto both sides of the casing ring 1 , whereas the grooves have been designed with a trapezoidal cut to ensure better compatibility in the casing rings 2 and 3 with according grooves or hollows 82, 93 when making the nod, so that lubricant channels 8, 9 would form between the casing rings in the end sealing assemblies.
• the casing rings 2, 3 are formed out of at least four segments, which during completion form a uniform casing ring (see Fig 3). The depth Dk of the hollows made into the casing rings 2, 3 is 0.15 to 0.6 of the thickness T of the casing ring.
• the fixed input/output unit 17 for example the input end of the dust
• the first casing ring 2 is attached to the flange 10 with, for example, stud bolts.
• fixing devices 1 1 for example with stud bolts
• the first casing ring is left on the one side of the rotating casing ring 1 and the second casing ring 3 left on the other side of the rotating casing ring, so that the work surfaces on both sides of the rotating casing ring 1 slide along the work surfaces of the fixed casing rings 2, 3 when they rotate.
• the hollows 82, 81 , 91 , 93 with a trapezoidal cut, which are made into the fixed casing rings 2, 3 and rotating casing rings, are placed over one another so that closed lubricant channels 8 and 9 are formed.
• Temperature and quantity sensors widely used in the art can be used as the said sensors.
• the second casing ring 3 is attached to the flange 5 and in turn, the resulting nod is attached to the flange 10 of the fixed input/output unit 17.
• Hollows 91 and 93 over the second casing ring and rotating casing ring form a lubricant channel 9.
• the casing rings are placed against one another, so that the end sealing assembly would turn hermetic and the gases produced in the rotary kiln during working would not escape into the surrounding environment.
• Lubricant is added through the filling channels of the lubricant channels 8, 9 and it is added while the rotary kiln is working, checking the temperature and quantity of the lubricant with sensors placed onto the end of the filling channels.
• the end sealing of the rotary kiln according to present invention and the related innovative construction of the casing rings enabled to increase the working life of the end sealings between the service cycles up to 2.5 times, and simultaneously it decreased the time needed for replacing the end sealings by two times.
• the construction of the casing rings formed as segments enabled to decrease the expense of producing cast iron casing rings four times, which also reduced the transportation cost approximately three times.
• the reliability of the construction of the end sealings increased up to 2.5 times.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Muffle Furnaces And Rotary Kilns (AREA)
• Sealing Devices (AREA)

Priority Applications (9)

Applications Claiming Priority (2)

Publications (1)

Family

ID=43904103

Family Applications (1)

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Cited By (2)

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Citations (2)

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• 2009
  • 2009-12-11 EE EEU200900123U patent/EE01022U1/xx active Protection Beyond IP Right Term
• 2010
  • 2010-12-10 BR BR112012014000A patent/BR112012014000A2/pt active Search and Examination
  • 2010-12-10 CA CA2784004A patent/CA2784004C/en not_active Expired - Fee Related
  • 2010-12-10 CN CN201080062749.9A patent/CN102741596B/zh not_active Expired - Fee Related
  • 2010-12-10 EP EP10795294.7A patent/EP2510265B1/en active Active
  • 2010-12-10 WO PCT/EP2010/069400 patent/WO2011070162A1/en active Application Filing
  • 2010-12-10 MA MA35038A patent/MA33978B1/fr unknown
  • 2010-12-10 RS RS20140003A patent/RS53100B/en unknown
  • 2010-12-10 US US13/515,171 patent/US9127772B2/en not_active Expired - Fee Related
  • 2010-12-10 EA EA201200872A patent/EA021453B1/ru active IP Right Revival
  • 2010-12-10 AU AU2010329832A patent/AU2010329832B2/en not_active Ceased
  • 2010-12-12 JO JOP/2010/0443A patent/JO3095B1/ar active

Patent Citations (2)

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