CN213541293U - External sealing device of spring - Google Patents
External sealing device of spring Download PDFInfo
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- CN213541293U CN213541293U CN202022404532.5U CN202022404532U CN213541293U CN 213541293 U CN213541293 U CN 213541293U CN 202022404532 U CN202022404532 U CN 202022404532U CN 213541293 U CN213541293 U CN 213541293U
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- gland
- spring
- ring
- spring seat
- thick bamboo
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Abstract
The utility model discloses an external sealing device of spring, including quiet ring, rotating ring, first spring, gland, the gland includes gland A, gland B, fixing bolt, gland A is connected with equipment housing, be provided with boss A, boss B on the relative terminal surface respectively on gland A, the gland B respectively, the lateral wall butt of boss A, boss B, fixing bolt passes through threaded connection with gland A or gland B, its head with gland A, gland B butt; the movable ring and the static ring are sleeved outside the side wall of the rotating shaft, the static ring is in sliding fit with the gland B, two sealing sleeves are arranged between the static ring and the movable ring, and the sealing sleeves are in sliding fit; the first spring seat and the second spring seat are connected with the distance adjusting bolt, the distance adjusting bolt is connected with the gland, the head of the distance adjusting bolt is abutted against the first spring seat, the first spring is arranged between the first spring seat and the second spring seat, and the second spring seat is abutted against the static ring; the first spring is arranged outside the shell of the equipment, and is convenient to detach.
Description
Technical Field
The utility model relates to a mechanical seal field is an external sealing device of spring particularly.
Background
Mechanical seal generally comprises rotating ring, quiet ring, rotating ring sealing washer, quiet ring sealing washer, spring holder, holding screw, stop pin etc. and its theory of operation is: when the mechanical seal works, the movable ring and the static ring are mutually attached and move relatively by the axial force caused by the pressure of the sealing fluid, the elasticity of the elastic element and the like, a small gap is formed at the junction (sealing interface) between the sealing end faces due to the close fit of the two sealing end faces, when a pressure medium passes through the gap, an extremely thin liquid film is formed, resistance is generated, the medium leakage is prevented, and meanwhile, the end faces are lubricated by the liquid film, so that the long-term sealing effect is obtained. Mechanical seal among the prior art, the spring sets up inside equipment mostly, and is inconvenient to observe, install and maintain.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, the present invention is directed to: the sealing device with the external spring is provided, and the first spring is arranged outside the equipment shell and is convenient to install and maintain.
In order to realize the purpose of the utility model, the utility model provides a following technical scheme:
a spring external sealing device comprises a static ring, a dynamic ring, a first spring and a gland, wherein the gland comprises a gland A, a gland B and a fixing bolt;
the movable ring and the static ring are sleeved outside the side wall of the rotating shaft, the movable ring is static relative to the rotating shaft, the static ring is static relative to the gland, the outer side wall of the static ring is in sliding fit with the inner side wall of the gland B, two sealing sleeves are arranged between the static ring and the movable ring, and the sealing sleeves are in sliding fit;
the first spring seat and the second spring seat are respectively sleeved outside a screw rod of the distance adjusting bolt, the distance adjusting bolt is connected with the gland through threads, the head of the distance adjusting bolt is abutted against the first spring seat, the first spring is clamped between the first spring seat and the second spring seat, and the second spring seat is abutted against the static ring;
still include dustproof mechanism, dustproof mechanism includes a cover section of thick bamboo, a cover section of thick bamboo is the unsealed structure in both ends, be provided with the bearing in the cover section of thick bamboo, outside the lateral wall of pivot was located to the inner circle cover of bearing, its outer lane through a plurality of cable wires that are in lax state with the inner wall connection of a cover section of thick bamboo, the cable wire overcoat is equipped with the second spring, the both ends of spring respectively with a cover section of thick bamboo inner wall, bearing inner race are connected, the one end of a cover section of thick bamboo is connected with the casing of equipment, and the other end is provided with dustproof cloth, dustproof cloth fill up the bearing inner race with the clearance between the cover section of thick bamboo inner wall, first spring, roll adjustment bolt all set up in the space that dustproof cloth, a cover section.
Furthermore, a first sealing ring is arranged between the movable ring and the rotating shaft.
Furthermore, a second sealing ring is arranged on the contact surface of the gland B and the gland A.
Further, a third sealing ring is arranged between the gland B and the static ring.
Further, the dustproof cloth is made of oxford cloth.
Furthermore, the first spring seat and the second spring seat are of L-shaped structures comprising a transverse edge and a vertical edge, the inward bends of the first spring seat and the second spring seat are arranged oppositely, the vertical edges of the first spring seat and the second spring seat are sleeved outside the screw rod of the distance adjusting bolt respectively, and two ends of the first spring are arranged at the inward bends of the first spring seat and the second spring seat respectively.
Compared with the prior art, the utility model, following beneficial effect has:
1. first spring sets up outside the casing of equipment, and the user can clearly observe the behavior of first spring, the elastic force decline that leads to when first spring reduces the messenger sealed effect, will roll adjustment bolt follows screw out in the gland, can with first spring is dismantled, convenient and fast, simultaneously, because first spring sets up outside the equipment casing, has avoided its medium corrosion damage by the equipment casing, has played the guard action to it.
2. The space that dustproof cloth, a cover section of thick bamboo, equipment casing enclose plays isolated effect to the pollutant in the external environment, right first spring, roll adjustment bolt play the guard action.
Drawings
FIG. 1 is an internal structure view of the external spring sealing device of the present invention;
fig. 2 is a schematic view of the structure of the housing.
List of reference numerals
1-cover cylinder, 2-gland A, 3-dustproof cloth, 4-second spring, 5-steel cable, 6-bearing, 7-distance adjusting bolt, 8-first spring seat, 9-second spring seat, 10-gland B, 11-second sealing ring, 12-third sealing ring, 13-fixing bolt, 14-static ring, 15-sealing sleeve, 16-boss A, 17-boss B, 18-first sealing ring, 19-pressure pad and 20-first spring.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, a fixed connection, an integral connection, or a detachable connection; may be communication within two elements; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art can understand the specific meaning of the above terms in the present invention in specific situations.
As shown in fig. 1-2, an external spring sealing device includes a stationary ring 14, a moving ring 21, a first spring 20, and a gland, where the gland includes a gland a2, a gland B10, and a fixing bolt 13, the gland a2 is connected to an equipment housing, bosses a16 and B17 are respectively disposed on opposite end surfaces of the gland a2 and the gland B10, side walls of the bosses a16 and B17 are abutted, the fixing bolt 13 is in threaded connection with the gland a2 or the gland B10, and a head portion of the fixing bolt is abutted to the gland a2 and the gland B10;
the movable ring 21 and the static ring 14 are sleeved outside the side wall of the rotating shaft, the movable ring 21 is static relative to the rotating shaft, the static ring 14 is static relative to the gland, the outer side wall of the static ring 14 is in sliding fit with the inner side wall of the gland B10, two sealing sleeves 15 are arranged between the static ring 14 and the movable ring 21, and the sealing sleeves 15 are in sliding fit;
the adjustable-pitch bolt comprises a first spring seat 8, a second spring seat 9 and an adjustable-pitch bolt 7, wherein the first spring seat 8 and the second spring seat 9 are respectively sleeved outside a screw rod of the adjustable-pitch bolt 7, the adjustable-pitch bolt 7 is in threaded connection with a gland, the head of the adjustable-pitch bolt is abutted against the first spring seat 8, a first spring 20 is clamped between the first spring seat 8 and the second spring seat 9, and the second spring seat 9 is abutted against a static ring 14;
still include dustproof mechanism, dustproof mechanism includes a cover section of thick bamboo 1, a cover section of thick bamboo 1 is the unsealed structure in both ends, be provided with bearing 6 in a cover section of thick bamboo 1, outside the lateral wall of pivot was located to the inner circle cover of bearing 6, its circle through a plurality of cable wire 5 that are in lax state with the interior wall connection of a cover section of thick bamboo 1, 5 overcoat of cable wire are equipped with second spring 4, the both ends of spring respectively with a cover section of thick bamboo 1 inner wall, bearing 6 outer lane are connected, the one end of a cover section of thick bamboo 1 is connected with the casing of equipment, and the other end is provided with dustproof cloth 3, dustproof cloth 3 fills up bearing 6 outer lane with the clearance between a cover section of thick bamboo 1 inner wall, first spring 20, roll adjustment bolt 7 all set up in the space that dustproof cloth 3, a cover section of thick bamboo 1, equipment.
The utility model discloses a theory of operation does: when the sealing device works, the static ring 14 is tightly pressed on the dynamic ring 21 under the action of the elastic force of the first spring 20, when a rotating shaft of equipment rotates, the dynamic ring 21 rotates along with the rotating shaft, the static ring 14 is static, a sealing surface is formed by a contact surface of the dynamic ring 21 and the sealing sleeve 15, a contact surface of the static ring 14 and the sealing sleeve 15 and a contact surface between the sealing sleeves 15, the junction of the rotating shaft and the shell of the equipment is sealed, and a medium is prevented from leaking from a gap between the static ring and the static ring.
Because the second spring seat 9 is abutted against the static ring 14, the head of the distance adjusting bolt 7 is abutted against the first spring seat 8, when the elastic force of the first spring 20 acting on the static ring 14 needs to be adjusted, the distance adjusting bolt 7 is rotated to be screwed into the gland, the elastic force between the first spring seat 8 and the second spring seat 9 is increased, further, the pressure between the static ring 14 and the movable ring 21 is increased, and the sealing effect is increased, therefore, because the first spring 20 is arranged outside the shell of the equipment, a user can clearly observe the working condition of the first spring 20, when the elastic force of the first spring 20 is reduced, the sealing effect is reduced, the distance adjusting bolt 7 is screwed out of the gland, the first spring 20 can be disassembled, and meanwhile, because the first spring 20 is arranged outside the shell of the equipment, the corrosion and damage of the medium in the equipment shell are avoided, and the protective effect is achieved.
Gland A2, gland B10 pass through boss A16, boss B17's axial limiting effect and fixing bolt 13's vertical limiting effect is fixed, work as gland A2 or when gland B10 damages, it can to change corresponding accessory alone, has reduced the use cost of this device.
The sealing sleeve 15 reduces the relative rotating speed between the sealing end surfaces between the static ring 14 and the dynamic ring 21 in the mechanical sealing device, and improves the sealing performance of the mechanical sealing device.
The utility model discloses in, fixing bolt 13 with be provided with pressure pad 19 between the gland, increased fixing bolt 13 with area of contact between the gland.
The working principle of the dustproof mechanism is as follows: the spring-loaded seal is primarily suitable for use in system conditions where the medium contains particles with low viscosity, but no or no cooling is required. Such as coal washery, dredging engineering, field sewage, wastewater treatment engineering, alumina factory, oil refinery, etc., in these places, the environment condition is bad, and it is easy to attach the pollutant on the first spring 20 to cause it to be corroded, and at the same time, the tiny dust may also enter the screw hole where the distance adjusting bolt 7 is connected with the gland, and the gap between the static ring 14 and the gland B10, causing the distance adjusting bolt 7 to be difficult to screw and the contact surface between the static ring 14 and the gland B10 to be damaged, in the utility model, the cover cylinder 1 is arranged around the rotating shaft, the rotating shaft is rotatably connected with the cover cylinder 1 through the bearing 6, the second spring 4 plays a buffer role, preventing the vibration of the rotating shaft from being transmitted to the cover cylinder 1, damaging the connection between the cover cylinder 1 and the equipment shell and causing the deformation of the cover cylinder 1, the bearing 6 is suspended inside the cover cylinder 1 under the action of the steel cable 5, the second spring 4 is protected, the space enclosed by the dustproof cloth 3, the cover cylinder 1 and the equipment shell is isolated from the pollutants in the external environment, and the first spring 20 and the distance adjusting bolt 7 are protected.
Further, a first sealing ring 18 is arranged between the movable ring 21 and the rotating shaft.
By providing the first seal ring 18, the gap between the rotating ring 21 and the rotating shaft is sealed, and the leakage of the medium from the gap therebetween is prevented.
Furthermore, a second sealing ring 11 is arranged on the contact surface of the gland B10 and the gland A2.
By providing the second seal ring 11, the gap between the gland B10 and the gland a2 is sealed, and leakage of the medium from the gap therebetween is prevented.
Further, a third seal ring 12 is provided between the gland B10 and the stationary ring 14.
By providing the third seal ring 12, the gap between the gland B10 and the stationary ring 14 is sealed, and leakage of the medium from the gap therebetween is prevented.
Further, the dustproof cloth 3 is made of oxford cloth.
The oxford fabric has good friction resistance and corrosion resistance, can play a waterproof role after being treated by the coating, is suitable for outdoor use in severe environment, and has low cost and reduced production cost.
Further, the first spring seat 8 and the second spring seat 9 are both L-shaped structures including a transverse edge and a vertical edge, the inward bent portions of the first spring seat 8 and the second spring seat 9 are arranged oppositely, the vertical edges of the first spring seat 8 and the second spring seat 9 are respectively sleeved outside the screw rod of the distance adjusting bolt 7, and two ends of the first spring 20 are respectively arranged at the inward bent portions of the first spring seat 8 and the second spring seat 9.
Two ends of the first spring 20 are respectively arranged at the inward bending positions of the first spring 20 and the second spring 4, so that the first spring 20 can be prevented from being separated from the first spring seat 8 and the second spring seat 9, the sealing effect of the static ring 14 and the dynamic ring 21 is failed, and the operation reliability of the device is improved.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the embodiments in the above description, and the technical concept of the present invention can be within the scope of the present invention, and can be modified to various simple modifications, and these simple modifications all belong to the protection scope of the present invention. It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features. In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.
Claims (6)
1. The utility model provides an external sealing device of spring, includes quiet ring (14), rotating ring (21), first spring (20), gland, its characterized in that: the gland comprises a gland A (2), a gland B (10) and a fixing bolt (13), the gland A (2) is connected with the equipment shell, the opposite end faces of the gland A (2) and the gland B (10) are respectively provided with a boss A (16) and a boss B (17), the side walls of the boss A (16) and the boss B (17) are abutted, the fixing bolt (13) is in threaded connection with the gland A (2) or the gland B (10), and the head of the fixing bolt is abutted to the gland A (2) and the gland B (10) simultaneously;
the movable ring (21) and the static ring (14) are sleeved outside the side wall of the rotating shaft, the movable ring (21) is static relative to the rotating shaft, the static ring (14) is static relative to the gland, the outer side wall of the static ring (14) is in sliding fit with the inner side wall of the gland B (10), two sealing sleeves (15) are arranged between the static ring (14) and the movable ring (21), and the sealing sleeves (15) are in sliding fit;
the adjustable-distance screw press is characterized by further comprising a first spring seat (8), a second spring seat (9) and an adjustable-distance bolt (7), wherein the first spring seat (8) and the second spring seat (9) are respectively sleeved outside a screw rod of the adjustable-distance bolt (7), the adjustable-distance bolt (7) is in threaded connection with the gland, the head of the adjustable-distance bolt is abutted against the first spring seat (8), the first spring (20) is clamped between the first spring seat (8) and the second spring seat (9), and the second spring seat (9) is abutted against the static ring (14);
still include dustproof mechanism, dustproof mechanism includes a cover section of thick bamboo (1), a cover section of thick bamboo (1) is the unsealed structure in both ends, be provided with bearing (6) in a cover section of thick bamboo (1), outside the lateral wall of pivot was located to the inner circle cover of bearing (6), its circle through a plurality of cable wire (5) that are in lax state with the interior wall connection of a cover section of thick bamboo (1), cable wire (5) overcoat is equipped with second spring (4), the both ends of spring respectively with a cover section of thick bamboo (1) inner wall, bearing (6) outer lane are connected, the one end of a cover section of thick bamboo (1) is connected with the casing of equipment, and the other end is provided with dustproof cloth (3), dustproof cloth (3) are filled up bearing (6) outer lane with the clearance between a cover section of thick bamboo (1) inner wall, first spring (20), roll adjustment bolt (7) all set up in dustproof cloth (3), a cover section of thick bamboo (1), The space enclosed by the equipment shell.
2. The sealing device with an external spring as claimed in claim 1, wherein: a first sealing ring (18) is arranged between the movable ring (21) and the rotating shaft.
3. The sealing device with an external spring as claimed in claim 2, wherein: and a second sealing ring (11) is arranged on the contact surface of the gland B (10) and the gland A (2).
4. A spring outboard seal arrangement according to claim 3, wherein: and a third sealing ring (12) is arranged between the gland B (10) and the static ring (14).
5. The sealing device with an external spring as claimed in claim 4, wherein: the dustproof cloth (3) is made of oxford cloth.
6. The sealing device with an external spring as claimed in claim 5, wherein: first spring holder (8), second spring holder (9) all are for including the L column structure on a horizontal limit, a perpendicular limit, and the relative setting in inflection department of the two, the perpendicular limit of first spring holder (8), second spring holder (9) is located respectively outside the screw rod of roll adjustment bolt (7), two ends of first spring (20) set up respectively in the inflection department of first spring holder (8), second spring holder (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022404532.5U CN213541293U (en) | 2020-10-26 | 2020-10-26 | External sealing device of spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022404532.5U CN213541293U (en) | 2020-10-26 | 2020-10-26 | External sealing device of spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213541293U true CN213541293U (en) | 2021-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022404532.5U Active CN213541293U (en) | 2020-10-26 | 2020-10-26 | External sealing device of spring |
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| Country | Link |
|---|---|
| CN (1) | CN213541293U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118088559A (en) * | 2024-04-24 | 2024-05-28 | 哈尔滨船舶锅炉涡轮机研究所(中国船舶集团有限公司第七0三研究所) | Rotary hydraulic transmission device for ship retraction system |
-
2020
- 2020-10-26 CN CN202022404532.5U patent/CN213541293U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118088559A (en) * | 2024-04-24 | 2024-05-28 | 哈尔滨船舶锅炉涡轮机研究所(中国船舶集团有限公司第七0三研究所) | Rotary hydraulic transmission device for ship retraction system |
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