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
• • 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
  • F16J15/3464—Mounting of the seal
  • F16J15/348—Pre-assembled seals, e.g. cartridge seals

Definitions

• the invention relates to a Gleit ⁇ 'ngdichtung for sealing the gap between relatively rotatably mounted Maschinente len, in particular for sealing the gap between a shaft and a stationary arranged housing, consisting essentially of a pair of spectacles, which is detachably connected to the housing and encloses the shaft at a distance, the housing in
• Shaft pass range has an extension.
• Such mechanical seals can be used, for example, on pump, mixer, agitator or screw housings.
• the object of the invention is to provide a mechanical seal which enables an exchange, in particular the known sealing systems mentioned above, with one another in a simple manner.
• the glasses of the sliding tringdi device are provided with recesses on the inside, such that differently designed sealing systems can be used in these recesses and in the expansion of the housing and can be interchanged.
• the expansion in the housing can be, for example, the usual stuffing box space.
• the part of the mechanical seal provided for this stuffing box can also protrude freely into the housing.
• the sealing systems as such are standardized packs or structural units, the operator or the maintenance personnel of a machine can very advantageously install and remove, ie, replace, the modular system without any special knowledge, at any time and without difficulty. In this way it is possible to optimally adapt a machine with regard to its shaft sealing to the respective leagues or changed operating conditions.
• the mechanical seal also enables according to the invention in a simple and cost-saving manner by retrofitting or expanding an already in use, for example equipped with a single seal mechanical seal to a double or multiple seal.
• the mechanical seal according to the invention offers the operator in the use of many variations and is characterized with regard to their acquisition, storage, assembly, disassembly, and the like. Over known sliding t ⁇ 'NGDI chtonne by a substantial reduction in labor, time and cost of.
• the interchangeable sealing system is arranged on a sleeve surrounding the shaft, also called a cartridge.
• This mechanical seal equipped with glasses and a cartridge according to the invention is of a type which is equally used in pumps, mixers, agitators or screws. It is characterized by its very easy handling and assembly, since glasses and cartridges with all the sealing elements to be arranged in between can be installed completely pre-assembled.
• the interchangeable sealing system has an internal individual seal.
• the interchangeable sealing system can also very advantageously be provided with an internal single seal and with an external support bearing or throttle bushing.
• the interchangeable sealing system has an internal and external double seal, that is to say two individual seals which advantageously cooperate as a double seal.
• the interchangeable seal system consists of an external single seal.
• the exchangeable sealing system can advantageously consist of an external individual seal with an internal support bearing or throttle bushing.
• the universal glasses in the case of a mechanical seal, can be provided with bores for the supply and discharge of a barrier medium and / or for the supply and discharge of a rinsing liquid become .
• Fig. 1 a consisting of glasses and a cartridge sliding tri ngdi chtgehause according to the invention with an internal, replaceable individual seal in the longitudinal section
• Fig. 2 consisting of glasses
• Fig. 3 a G Lei t ri ngdi chtgehause consisting of glasses and a cartridge according to the invention with internal, replaceable individual seal and with. external support bearing or throttle bushing in partial longitudinal section
• Fig. 4 consisting of glasses
• Fig. 5 is an existing from a pair of glasses and a mechanical seal housing according to the invention with internal and external, replaceable double seal in the longitudinal section
• Fig. 7 glasses with holes for the supply and discharge of barrier media and rinsing liquids according to FIG. 6 in a perspective view
• the mechanical seal according to the invention consists of two housing parts 1 and 11 which are detachably connected to one another. Since these housing parts are mechanical seal housing parts, they are subsequently given the designation glasses 1 and cartridge 11, which are common in the technical field.
• the glasses 1 are detachably connected to the housing 2 by means of screws 3, which are evenly distributed over the circumference, for example a pump, mixer, agitator or screw housing. 2 to 4 screws 3 are often required for the detachable connection of the glasses 1 to the housing 2.
• a sealing ring 4 is arranged, which seals the glasses 1 and the housing 2 from the outside.
• the Housing part 2 can be integrated in the fixed housing of the pump, the mixer, etc. or releasably connected to it.
• the glasses 1 enclose the shaft 5 at a distance.
• the housing 2 is provided on the inside with an extension 6 intended as a stuffing box space.
• the glasses 1 have on the inside, i.e. the side facing the shaft 5, recesses 7.
• the recesses 7 and 6 are designed according to the invention very advantageously so that differently designed sealing systems can be used and exchanged for one another.
• a sealing system which consists of an internal single seal, which i is composed essentially of a rotating slide ring 8, a stationary slide ring 9 with a sealing ring 10 and a continuous cartridge 11.
• the slide ring 8 is connected in a rotationally rigid manner to the cartridge 11 via a driver pin 12 and a snap ring 13, which in turn is releasably connected to the shaft 5 at the outer right end by means of locking screws.
• the ring 14 with se Ibstschnei ending set screws 15 and snap ring 16 is used.
• O-rings 17, 18 and 19 are arranged as secondary sealing rings.
• the slide ring 8 connected to the shaft 5 via the driving pin 12 and the cartridge 11 rotates with the shaft.
• the slide ring 9 with the sealing ring 10 is connected to the stationary glasses 1 via the 0-ring 19 and one or more springs 20 distributed around the circumference, which resiliently support the sliding ring 9 with the sealing ring 10 with respect to the rotating sliding ring 8 and is therefore fixed .
• the glasses 1 for the supply and removal of barrier media, in particular a barrier liquid are provided in the region of the recesses 7 with at least two bores 21 and with corresponding connections 22.
• the holes 21 for the supply and discharge of the blocking media are arranged diametrically opposite one another in the glasses 1.
• the holes 21 can also serve as a leakage control valve.
• at least two further bores 23 are provided with corresponding connections 24 for the supply and discharge of a flushing medium, which preferably open essentially in the direction of rotation of the shaft 5 into the recess 6 of the housing part 2.
• a plurality of central clamps or clips 25, which are connected to the glasses 1, ensure that the cartridge 11 is centered and the correct installation dimension.
• the sealing system described above which consists of an internal single seal, can advantageously be replaced as a unit very easily and in a simple manner with another sealing system, for example against a sealing ring system with an external single seal, as Fig. 2 shows.
• another sealing system for example against a sealing ring system with an external single seal, as Fig. 2 shows.
• the screws 3 and 15 need to be loosened and the snap ring 16 removed.
• the ring 14 and the glasses 1 and the internal sealing system can then be removed or removed from the shaft 5 and the external sealing system according to FIG. 2 can be inserted or installed.
• the glasses 1 with their recess 7 and the housing part 2 with the stuffing box space 6 according to the invention remain unchanged (the cartridge 11 is removed or a correspondingly adapted individual seal, not shown in FIG. 2), is not only very advantageous achieved a considerable reduction in material and storage costs, but it also considerably simplifies the assembly and disassembly of the respective sealing system for the maintenance personnel. Since, as mentioned, the seal housing parts consisting of glasses 1 and cartridge 11 remain unchanged with their connecting screws, recesses, bores for the supply and removal of blocking and flushing media, etc., they always receive the same reference numbers below.
• the sealing system shown in FIG. 2 with an external individual seal consists of a stationary sliding ring 27 which carries the sealing ring 26 and which is supported against the glasses 1 by a spring 28, the pressure being relieved by the calculated closing or opening areas of the sealing ring holder 27 is carried out hydrodynamically.
• the sealing system also consists of an unsprung sliding ring 29 which is operatively connected to the sealing ring 26 and which is connected to the shaft 5 via a snap ring 30, the fastening ring 31 and self-tapping set screws 32 and rotates with the latter.
• a centering ring 33 is arranged on the outside between the fastening ring 31 and the shaft 5, while O-rings 34, 35 are provided as secondary seals or intermediate seals within the set screws 32.
• the stationary sliding ring 27 is also sealed off from the glasses 1 by an O-ring 36.
• Several assembly gauges 37 which are connected to the glasses 1, in turn ensure centering and for the axial installation dimension of the slide ring 29 during installation and are removed during commissioning.
• FIGS. 1 and 2 can also be very advantageously exchanged for the sealing system shown in FIG. 3, the construction of the seal housing consisting of glasses 1 and cartridge 11 remaining unchanged.
• This sealing system shown in FIG. 3 is an internal single seal, as shown in FIG. 1; however, it is additionally equipped on the right-hand side with a throttle ring 38 and throttle ring 39, which is supported on the cartridge 11. Throttle ring 38 and throttle ring 39 thus form a type of support bearing.
• the throttle ring holder 38 is in position by one or several retaining pins 40 and snap ring 41 are held, or it is connected to the stationary glasses 1 via these elements, so that it cannot be carried along by the cartridge 11, which rotates with the shaft 5.
• An O-ring 42 is also arranged as a sealing element between the throttle ring holder 38 and the glasses 1.
• the remaining sealing and support members of this sealing system illustrated in Fig. 3 are identical to the sealing system of FIG. 1.
• the bore 21 can be used as a leakage control, where slight leakage ng the chokes' 39 not only reach, but on the drain open hole 21 downwards. The operator has the information that the mechanical seal will soon fail and that replacement must be provided in good time.
• FIG. 4 shows a sealing system with an external single seal, which consists of a sliding ring 43 with a sealing ring 44 which is resiliently supported in relation to the spectacles 1 and which bears sealingly on the sliding ring 29. Furthermore, this sealing system is equipped with an internal throttle ring 45, which serves as a support bearing, and with a throttle ring holder 46, which is connected to the spectacles 1 via a snap ring 47 and a sealing ring 48. The throttle ring 45 lies directly on the shaft 5.
• FIG. 5 shows a sealing system which has an inner lying and an outer seal and thus consists of a double seal. Because the inner seal 1, and the outer lying seal is identical to the seal shown in FIG. 2, they have been given the same reference numerals as in FIGS. 1 and 2.
• This double sealing system shown in FIG. 5 therefore requires no further explanation with regard to its structural design and its sealing function.
• the bores 21 with their connections 22 (quench connections or leakage control bores) for the barrier media and the bores 23 with the connections 24 for flushing media can be seen particularly clearly .
• any other inert liquids or gases on the atmospheric side of the sliding seal can be supplied and discharged as barrier media through the bores 21 as required.
• the same also applies to the supply and discharge of flushing media through the bores 23 in the stuffing box space 6.
• the glasses 1 are otherwise provided with recesses 49 for receiving the screws 3 for connecting the glasses 1 to the housing part 2 .
• the mechanical seal designed in accordance with the invention also very advantageously enables the use of hydraulically pressure-relieved seals, specifically both with a medium and a large amount of liquid. Seals that are not relieved of pressure hydraulically, as well as dynamic, spring-loaded or unsprung sealing rings can also be used with advantage in the mechanical seal and replaced with one another, without any structural changes to the seal housing parts.
• the invention or the modular system according to the invention is also not limited to the sealing housing parts for pumps, ischer, agitators and screws shown in the drawing figures.
• the seal housing parts can also be designed accordingly for any other machines and units and can be provided with interchangeable sealing systems for gas and / or liquid-tight sealing of the machine housing with respect to the drive shaft and thus with respect to the atmosphere.
• the particular advantage is that the user of this modular seal design, as they are shown in the drawing figures according to the invention as an example, need only be limited to an inside or outside lying pair of seals, regardless of the different Construction methods. This leads to a significant reduction in storage costs.
• the user of such a modular system designed according to the invention also has the option to start with a single seal for cost-saving considerations, in order to expand the sealing system that he already has with the same system, without any design changes, or without having to switch to a completely new sealing system . For example, by simply assembling a shaft support ring and thus reaching the quench space, in a receptacle already prepared for this purpose on the glasses or for safety reasons and
• the sealing system can be easily expanded by a second seal.
• the invention very advantageously facilitates the entry and the use of sliding tri ngdi chtungen for the person skilled in the art or the user, because with regard to the construction methods, all of the known arrangements normally occurring are possible by simply adding individual elements.
• the user of such a modular sealing system according to the invention therefore only has to deal with a single system with which he has almost all possibilities for shaft sealing. He therefore does not have to adjust to different types of seals, but only to one type, which among other things also considerably reduces the sources of error when handling lubricant seals if they are not completely switched off.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Sealing Devices (AREA)
• Mechanical Sealing (AREA)
• Sealing With Elastic Sealing Lips (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6264289

Family Applications (1)

Country Status (7)

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• 1985
  • 1985-03-06 DE DE19853507819 patent/DE3507819A1/de not_active Withdrawn
• 1986
  • 1986-03-05 JP JP50189086A patent/JPS62502212A/ja active Pending
  • 1986-03-05 ES ES552679A patent/ES8705953A1/es not_active Expired
  • 1986-03-05 WO PCT/EP1986/000115 patent/WO1986005253A1/de not_active Application Discontinuation
  • 1986-03-05 EP EP19860901848 patent/EP0249597A1/de not_active Withdrawn
  • 1986-03-05 AU AU56293/86A patent/AU5629386A/en not_active Abandoned
  • 1986-03-06 CN CN198686101407A patent/CN86101407A/zh active Pending

Non-Patent Citations (1)

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