CN210770232U - Integrated double-end-face spring mechanical sealing device - Google Patents
Integrated double-end-face spring mechanical sealing device Download PDFInfo
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- CN210770232U CN210770232U CN201921803689.6U CN201921803689U CN210770232U CN 210770232 U CN210770232 U CN 210770232U CN 201921803689 U CN201921803689 U CN 201921803689U CN 210770232 U CN210770232 U CN 210770232U
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Abstract
An integrated double-end-face spring mechanical sealing device is characterized in that a movable ring is sleeved on a shaft sleeve, an O ring is placed in a movable ring groove, the movable ring is fixed on the shaft sleeve through a back cap, a shaft sleeve sealing ring is placed in a shaft sleeve inner hole groove, and a set screw is screwed into a shaft sleeve threaded hole to form a shaft sleeve rotating part; the spring is placed into spring holes of the gland A and the gland B, the static ring sealing ring is sleeved on the outer circle of the static ring, the static ring is pressed into grooves of the gland A and the gland B, the static ring is integrated in the gland A and the gland B through the anti-rotation screws, and then the gland A and the gland B are combined through the connecting screws to form a sealing cavity; and then the shaft sleeve rotating part and the sealing cavity are integrated together through the limiting plate to form an integrated double-end-face spring mechanical sealing device, so that automatic centering is ensured, and artificial installation errors are eliminated. The static ring is uniformly stressed and has good following performance, the end face always keeps the best fitting state automatic centering structure, the installation is easy, and the stability of the mechanical seal working state is ensured.
Description
Technical Field
The utility model relates to a mechanical seal device especially relates to an integrated form bi-polar face spring mechanical seal device.
Background
The screw pump is one of key equipment in oil refining and chemical industry production, the operation efficiency and reliability of the screw pump depend on the quality of sealing to a great extent, the requirements on the reliability, service life, leakage rate, economy and the like of the sealing are higher and higher, and the requirements cannot be met due to the fact that the screw pump is easy to block and crystallize and the like when the screw pump is applied to the traditional single-end-face mechanical sealing because the screw pump conveys media with high viscosity, particles and the like and is easy to crystallize.
Disclosure of Invention
To the defect that traditional single-end face mechanical seal device exists, the utility model provides a be used for satisfying high viscosity, contain complicated operating modes such as granule, the installation is radial, axial dimensions is little, containerizes through the limiting plate, need not a neotype integrated form bi-polar face spring mechanical seal device who adjusts.
The concrete technical measures for solving the technical problems are as follows:
the utility model provides an integrated form bi-polar face spring mechanical seal device which characterized in that: sleeving a movable ring 13 on a shaft sleeve 1, placing an O-ring 10 in a movable ring groove, fixing the movable ring 13 on the shaft sleeve 1 through a back cap 9, placing a shaft sleeve sealing ring 12 in a hole groove in the shaft sleeve 1, and screwing a set screw 8 into a threaded hole of the shaft sleeve 1 to form a shaft sleeve rotating part; the spring 7 is placed into spring holes of a gland 3A and a gland 4B, a static ring sealing ring 11 is sleeved on the excircle of a static ring 2, the static ring 2 is pressed into grooves of the gland 3A and the gland 4B, the static ring 2 is integrated in the gland 3A and the gland 4B through an anti-rotation screw 5, and then the gland 3A and the gland 4B are combined through a connecting screw 14 to form a sealing cavity; and then the shaft sleeve rotating part and the sealing cavity are integrated together through a limiting plate 6.
The utility model has the advantages that: the utility model is designed in a standardized way, and the installation size meets the standards of HG/T2734-1995 and DIN 28138; the utility model discloses well advantage of design lies in through preventing that the screw is integrated for seal chamber with quiet ring, spring and gland, and the back of the body cap is integrated for axle sleeve rotary part with rotating ring, O circle axle sleeve. Structurally simplify transmission and connected mode, shortened mounting dimension in size, be convenient for realize integrated installation at narrow and small screw rod pump chamber, whole integrated elimination other factors are to the influence of machine seal compression volume, and A gland 3 and B gland 4 form a seal chamber through connecting screw, and the spring does not contact with the transport medium, prevents that the spring from blockking up, keeps sealed good resilience. The seal can be used in PLAN54 or 53 scheme in API682 standard, and a seal cavity with pressure higher than that of the medium end is formed in use, so that the medium is prevented from leaking, and the service life of the seal is prolonged. The axial size is compact as far as possible during design, the overlong size is avoided, and the operation is more stable. The drive is driven by the set screw, so that the device is firm and reliable and has stable transmission. For clean media, the friction pair is soft to hard (graphite-silicon carbide and tungsten carbide), and for media containing impurities, scales and crystals, the friction pair is hard to hard (silicon carbide-silicon carbide and tungsten carbide-tungsten carbide); when the mechanical seal is installed in the situation that the radial and axial spaces are very small, the mechanical seal has outstanding advantage performance and guarantees the stability of the working state of the mechanical seal.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a schematic structural view of the middle back cap of the present invention integrating the movable ring and the O-ring sleeve into a rotating component of the shaft sleeve;
fig. 4 is the structural schematic diagram of the middle anti-rotation screw of the present invention, which integrates the stationary ring, the spring and the gland into the sealed cavity.
In the figure: the bearing comprises a shaft sleeve, a static ring, a gland A, a gland B, an anti-rotation screw 5, a limiting plate 6, a spring 7, a set screw 8, a back cap 9, an O ring 10, a static ring sealing ring 11, a shaft sleeve sealing ring 12, a movable ring 13 and a connecting screw 14, wherein the shaft sleeve is arranged at 1, the static ring is arranged at 2, the gland A is arranged at 3, the gland B is arranged at 4, the anti-rotation screw is arranged at 5, the limiting plate is.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
An integrated double-end-face spring mechanical sealing device is disclosed, as shown in fig. 1 to 4, a movable ring 13 is sleeved on a shaft sleeve 1, an O-ring 10 is placed in a movable ring groove, the movable ring 13 is fixed on the shaft sleeve 1 through a back cap 9, a shaft sleeve sealing ring 12 is placed in a hole groove in the shaft sleeve 1, and a set screw 8 is screwed into a threaded hole of the shaft sleeve 1 to form a shaft sleeve rotating part; the spring 7 is placed into spring holes of a gland 3A and a gland 4B, a static ring sealing ring 11 is sleeved on the excircle of a static ring 2, the static ring 2 is pressed into grooves of the gland 3A and the gland 4B, the static ring 2 is integrated in the gland 3A and the gland 4B through an anti-rotation screw 5, and then the gland 3A and the gland 4B are combined together through a connecting screw 14 to form a sealing cavity; and then the shaft sleeve rotating part and the gland cavity are integrated through the limiting plate 6 to form an integrated double-end-face spring mechanical sealing device, so that automatic centering is ensured, and artificial installation errors are eliminated. The technical advantages of adopting this structure are: 1. the utility model discloses an it is integrated as an organic whole with quiet ring, spring and gland to prevent changeing the screw, and the back of the body cap is integrated for axle sleeve rotary part with rotating ring, O circle, axle sleeve, and the installation of being convenient for is maintained, and the wholeness is good, improves sealed life. 2. Be convenient for realize integrated installation in narrow and small pump chamber, whole integrated elimination other factors are to the influence of machine seal compression volume, and in the airtight cavity of a gland 3 and B gland 4 formation through connecting screw, make the spring not with the conveying medium contact, prevent that the spring from blockking up, keep sealed good resilience, the following nature is good, and the terminal surface remains the best laminating state all the time.
The utility model can select materials such as 2Cr13, 304, 316 and the like as the metal piece according to different working conditions; the spring is made of materials such as 304, 316, Hastelloy C and the like; the static ring of the dynamic ring is made of materials such as graphite, silicon carbide, tungsten carbide and the like; the application range is wide according to different materials.
The utility model adopts a double-end-face multi-spring balance type static structure, the multi-spring compensation performance is good, the end face load is uniform, and simultaneously, the follow-up performance is excellent; the balance type design (balance type mechanical seal refers to mechanical seal with the load coefficient less than 1), is less influenced by cavity pressure, and has wide applicable pressure range; the modular design, sealed installation is simple.
Claims (1)
1. The utility model provides an integrated form bi-polar face spring mechanical seal device which characterized in that: sleeving a movable ring (13) on a shaft sleeve (1), placing an O-ring (10) in a movable ring groove, fixing the movable ring (13) on the shaft sleeve (1) through a back cap (9), placing a shaft sleeve sealing ring (12) in an inner hole groove of the shaft sleeve (1), and screwing a set screw (8) into a threaded hole of the shaft sleeve (1) to form a shaft sleeve rotating part; placing a spring (7) into spring holes of a gland (3) A and a gland (4) B, sleeving a static ring sealing ring (11) on the excircle of a static ring (2), pressing the static ring (2) into grooves of the gland (3) A and the gland (4) B, integrating the static ring (2) into the gland (3) A and the gland (4) B through an anti-rotation screw (5), and combining the gland (3) A and the gland (4) B through a connecting screw (14) to form a sealing cavity; and then the shaft sleeve rotating part and the sealing cavity are integrated together through a limiting plate (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921803689.6U CN210770232U (en) | 2019-10-25 | 2019-10-25 | Integrated double-end-face spring mechanical sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921803689.6U CN210770232U (en) | 2019-10-25 | 2019-10-25 | Integrated double-end-face spring mechanical sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210770232U true CN210770232U (en) | 2020-06-16 |
Family
ID=71038054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921803689.6U Active CN210770232U (en) | 2019-10-25 | 2019-10-25 | Integrated double-end-face spring mechanical sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210770232U (en) |
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2019
- 2019-10-25 CN CN201921803689.6U patent/CN210770232U/en active Active
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