CN202418594U - Heavy-load mechanical seal device - Google Patents
Heavy-load mechanical seal device Download PDFInfo
- Publication number
- CN202418594U CN202418594U CN2011205446364U CN201120544636U CN202418594U CN 202418594 U CN202418594 U CN 202418594U CN 2011205446364 U CN2011205446364 U CN 2011205446364U CN 201120544636 U CN201120544636 U CN 201120544636U CN 202418594 U CN202418594 U CN 202418594U
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- China
- Prior art keywords
- ring
- face
- gland ring
- big
- seal ring
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- Expired - Lifetime
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Abstract
A heavy-load mechanical seal device is provided with a shaft sleeve fixed onto a rotating shaft. An axial groove is arranged at one end of the shaft sleeve, a dynamic seal ring is fixedly arranged in the groove, a static seal ring is arranged at one end of the shaft sleeve far away from the groove on the shaft sleeve, the outer circumference of the static seal ring is fixedly in close fit with the inner circumference of a gland ring, one end face of the static seal ring contacts with the outer end face of a transmission seat, another end face of the static seal ring slidably contacts with the end face of the dynamic seal ring far away from the groove, the inner end face of the transmission seat pushes two or more large springs mounted at the inner center of a large gland ring, and the end face, which is far away from the static seal ring, is fixedly arranged at the center of the end face of the large gland ring through a screw. The heavy-load mechanical seal device is adaptable to major jumping and runout of the rotating shaft, and keeps a fine sealing performance.
Description
Technical field
The utility model relates to the mechanical seal field, especially a kind of heavy load mechanical seal device.
Background technique
At present, in use there is a following difficult problem in pump with spring type mechanical sealing both at home and abroad: 1, and little spring mechanical seal can't be applied to the equipment of big jerk value and shifting amount.2, single big spring mechanical seal is inhomogeneous to the sealing surface stretch compensation, causes the eccentric wear of sealing pair to decrease easily, and when sealed medium pressure changed greatly, the mechanical seal sealing surface was prone to open, and caused losing efficacy.
Summary of the invention
The purpose of the utility model is to overcome above-mentioned deficiency, uses on the equipment with big circular runout and axial float for making mechanical seal, reduces sealing surface wearing and tearing in use; A kind of heavy load mechanical seal is provided; Two and above big spring are housed as the elastic compensating element, himself can keep the face pressure variation of sealing surface less when bearing big circular runout and axial float; Guarantee mechanical seal stable operation, play the better seal effect.
The purpose that the utility model is is achieved in that a kind of heavy load mechanical seal device, it is characterized in that: the axle sleeve that is fixed on the running shaft is set, and axle sleeve one end is provided with annular boss; Boss is provided with axial notch, and the footpath is tightly fixed on the external diameter of rotary packing ring one end and the groove, and the end face of this end of rotary packing ring is pressed on groove floor; The other end of axle sleeve is provided with big gland ring, and big gland ring inboard is provided with axial cavity, and a little gland ring is set; Little gland ring one end embeds the axial cavity of big gland ring, and its end face is pressed on the bottom surface of big gland ring axial cavity, and big gland ring and little gland ring are connected as a single entity through screw; Big gland ring is fastening through axial hole and apparatus casing that bolt passes big gland ring; In the cavity of big gland ring, be provided with at least two springs that are enclosed within on the axle sleeve, range upon range of setting inside and outside two springs, interlayer is provided with baffle; One end of two springs is pressed on big gland ring cavity bottom surface; The other end of two springs compresses an end face of retainer, and this retainer external diameter is tightly fixed on the internal diameter of little gland ring, and the other end of retainer compresses an end face of stationary seal ring; The internal diameter of stationary seal ring and little gland ring is tightly fixed, and another end face and the rotary packing ring other end of stationary seal ring compress.
Drive fit face on drive fit face between said axle sleeve boss one end and the running shaft, the external diameter of rotary packing ring one end and the boss axial notch between the footpath and the drive fit face between stationary seal ring and the little gland ring internal diameter; Be equipped with O type rubber ring, also be provided with O type rubber ring between the drive fit face between big gland ring inner side end and the apparatus casing.
Said rotary packing ring end face and by between the boss groove floor that compresses, between the internal diameter of retainer external diameter and little gland ring and the end face of retainer with by between the stationary seal ring end face that compresses, being equipped with pins cooperates the anti-rotation of formation spacing with groove.
Compared with prior art, the utility model is simple and reasonable, can be unit loading type, also can be separate type.It is big to be provided with two and above big spring compensation range, adopts the powerful locking of circumference can loosing prevention.Because each big spring all directly pushes with retainer mutually, a plurality of Point of Strength of big spring are uniformly distributed on the retainer end face circumference, and the sealing surface circumference is stressed evenly, have solved the sealing surface eccentric wear and have decreased problem, and improved the stability of mechanical seal operation; Adopt big spring as the elastic compensating element, compensation range is big, when axle sleeve during with the running shaft play, can in time make rotary packing ring sealing surface and stationary seal ring sealing surface fit tightly all the time to the rotating seat power of affording redress.Overcome original technology and adopted little spring mechanical seal impaired phenomenon when the axle play, also solved the difficulty that the big shifting amount equipment of large-diameter can only use filler, packing_seal, guaranteed sealing effect.
Description of drawings
Fig. 1 is the utility model general structure schematic representation.
Embodiment
Below in conjunction with accompanying drawing and instance the utility model is described further.
Referring to Fig. 1; Rotary packing ring 5 is fixedly set in rigidity axle sleeve 14 grooves; Axle sleeve 14 bottom portion of groove are provided with pin 3, and the external diameter of rotary packing ring 5 closely cooperates fixing through footpath on O RunddichtringO 4 and axle sleeve 14 grooves, and the internal diameter of rotary packing ring 5 and rigidity axle sleeve 14 grooves footpath down keep the gap; Pin 3 common formation anti-rotations in the cotter slot of rotary packing ring 5 afterbodys and rigidity axle sleeve 14 grooves are spacing, prevent to relatively rotate between the two.Stationary seal ring 6 is fixedly set in little gland ring 8 centers; The external diameter of stationary seal ring 6 fits tightly through the internal diameter of O type rubber ring 7 with the little gland ring 8 of rigidity; Stationary seal ring 6 interior edge faces contact with retainer 16 exterior edge faces that are installed in the little gland ring of rigidity 8 centers; It is spacing that the pin 15 of retainer 16 exterior edge faces and the groove of stationary seal ring 6 interior edge faces constitute anti-rotation jointly, prevents to relatively rotate between the two.The internal diameter of stationary seal ring 6 and rigidity axle sleeve 14 external diameters keep the gap.Retainer 16 interior edge faces be installed on big gland ring 11 chambeies in the big spring 17 at center push mutually.Little gland ring 8 interior edge faces are tightly fixed through screw 18 and are arranged at big gland ring 11 centers; Retainer 16 slides with little gland ring 8 to axial; Being installed on pin 9 and groove on retainer 16 external diameters in little gland ring 8 chambeies, to constitute anti-rotation jointly spacing; Prevent to relatively rotate retainer 16 and little gland ring 8 slide relative between the two.Seal face contacts relatively between rotary packing ring 5 and the stationary seal ring 6, under the effect of spring 17, fits tightly and slide relative arranged.The radially locking ring 20 of available band lug is fastened on axle sleeve 14 on the running shaft 1 through screw 19, to guarantee its integrality.2 and 10 are all the O RunddichtringO.Before the operation of this seal arrangement, available positioning block 13 is fixedly installed in big gland ring 11 exterior edge faces through screw 12, can play the position-limiting action that prevents big gland ring 11 axial displacements.The axial round tube hole that passes big gland 11 with bolt is connected fastening with apparatus casing, tighten screw 19 axle sleeve 14 afterbodys and running shaft 1 are fitted tightly, then knockout screw 12 and positioning block 13.
Claims (3)
1. heavy load mechanical seal device is characterized in that: the axle sleeve that is fixed on the running shaft is set, and axle sleeve one end is provided with annular boss; Boss is provided with axial notch, and the footpath is tightly fixed on the external diameter of rotary packing ring one end and the groove, and the end face of this end of rotary packing ring is pressed on groove floor; The other end of axle sleeve is provided with big gland ring, and big gland ring inboard is provided with axial cavity, and a little gland ring is set; Little gland ring one end embeds the axial cavity of big gland ring, and its end face is pressed on the bottom surface of big gland ring axial cavity, and big gland ring and little gland ring are connected as a single entity through screw; Big gland ring is fastening through axial hole and apparatus casing that bolt passes big gland ring; In the cavity of big gland ring, be provided with at least two springs that are enclosed within on the axle sleeve, range upon range of setting inside and outside two springs, interlayer is provided with baffle; One end of two springs is pressed on big gland ring cavity bottom surface; The other end of two springs compresses an end face of retainer, and this retainer external diameter is tightly fixed on the internal diameter of little gland ring, and the other end of retainer compresses an end face of stationary seal ring; The internal diameter of stationary seal ring and little gland ring is tightly fixed, and another end face and the rotary packing ring other end of stationary seal ring compress.
2. heavy load mechanical seal device according to claim 1; It is characterized in that: drive fit face on the external diameter of the drive fit face between axle sleeve boss one end and the running shaft, rotary packing ring one end and the boss axial notch between the footpath and the drive fit face between stationary seal ring and the little gland ring internal diameter; Be equipped with O type rubber ring, also be provided with O type rubber ring between the drive fit face between big gland ring inner side end and the apparatus casing.
3. heavy load mechanical seal device according to claim 1; It is characterized in that: the rotary packing ring end face and by between the boss groove floor that compresses, between the internal diameter of retainer external diameter and little gland ring and the end face of retainer with by between the stationary seal ring end face that compresses, being equipped with pins cooperates the anti-rotation of formation spacing with groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205446364U CN202418594U (en) | 2011-12-23 | 2011-12-23 | Heavy-load mechanical seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205446364U CN202418594U (en) | 2011-12-23 | 2011-12-23 | Heavy-load mechanical seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202418594U true CN202418594U (en) | 2012-09-05 |
Family
ID=46743364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205446364U Expired - Lifetime CN202418594U (en) | 2011-12-23 | 2011-12-23 | Heavy-load mechanical seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202418594U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106605089A (en) * | 2014-09-24 | 2017-04-26 | 伊格尔工业股份有限公司 | Mechanical seal |
-
2011
- 2011-12-23 CN CN2011205446364U patent/CN202418594U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106605089A (en) * | 2014-09-24 | 2017-04-26 | 伊格尔工业股份有限公司 | Mechanical seal |
| CN106605089B (en) * | 2014-09-24 | 2018-07-06 | 伊格尔工业股份有限公司 | Mechanical sealing member |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |