CN213899884U - Mechanical sealing device - Google Patents
Mechanical sealing device Download PDFInfo
- Publication number
- CN213899884U CN213899884U CN202022781657.XU CN202022781657U CN213899884U CN 213899884 U CN213899884 U CN 213899884U CN 202022781657 U CN202022781657 U CN 202022781657U CN 213899884 U CN213899884 U CN 213899884U
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- ring
- spring
- sealing
- spring seat
- step shaft
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Abstract
A mechanical sealing device comprises a step shaft (1), a sealing cavity (2) and a gland (3), wherein the gland (3) is in bolted connection with the sealing cavity (2) through a sealing gasket, the mechanical sealing device also comprises a static ring (4), a flange plate (5), a dynamic ring (6), a spring seat (7) and a spring (9), one end of the static ring (4) is provided with a first annular sealing bulge, the outer wall of the static ring (4) is annularly and uniformly provided with a group of semicircular bolt limiting grooves (10), the static ring (4) is sleeved on the step shaft (1), and the flange plate (5) fixes the static ring (4) on the gland (3) through a group of first bolts (11); the advantages are that: the sealing performance is good, the torque transmission between the spring seat and the movable ring is stable, and the service life is long.
Description
Technical Field
The utility model relates to a mechanical seal equipment field, concretely relates to mechanical seal device.
Background
At present, after the movable ring and the static ring end faces of the existing mechanical seal are used for a long time, a gap is easy to generate to cause leakage, and torque transmission between a spring seat and the movable ring depends on a spring, so that the torque transmission is unstable, and the sealing performance is influenced.
SUMMERY OF THE UTILITY MODEL
The present invention aims to provide a mechanical sealing device for overcoming the above disadvantages.
The utility model comprises a step shaft, a seal cavity and a gland, wherein the gland is connected with the seal cavity by a bolt through a seal gasket, and the gland also comprises a static ring, a flange plate, a movable ring, a spring seat and a spring,
the one end of quiet ring is provided with first annular seal arch, the annular equipartition is opened on the outer wall of quiet ring has a set of semicircular bolt spacing groove, quiet ring cover is epaxial at the step, the ring flange is fixed quiet ring on the gland through a set of first bolt, the screw rod of a set of first bolt is located the semicircular bolt spacing inslot that corresponds, the rotating ring is epaxial at the step through the cover, and through the outer wall sealing connection of sealing washer with the step axle, the one end of rotating ring is provided with second annular seal arch, the spring holder is fixed epaxial at the step, the spring housing is on the outer wall of rotating ring and spring holder, the one end of spring is fixed on the rotating ring, the other end of spring is fixed on the spring holder, compress tightly the second annular seal arch of rotating ring on the first annular seal arch of quiet ring through the spring.
The other end of the movable ring is provided with a group of limiting grooves, and one end of the spring seat is provided with a group of limiting bulges matched with the limiting grooves for use.
The stationary ring is made of polytetrafluoroethylene.
The spring seat is connected with the step shaft key through a flat key, and one end of the spring seat is propped against the step surface of the step shaft.
The utility model has the advantages that: the sealing performance is good, the torque transmission between the spring seat and the movable ring is stable, and the service life is long.
Description of the drawings
Fig. 1 is a schematic sectional structure diagram of the present invention.
Fig. 2 is a schematic view of the local hidden structure of the present invention.
Detailed Description
As shown in the attached drawing, the utility model comprises a step shaft 1, a seal cavity 2 and a gland 3, wherein the gland 3 is connected with the seal cavity 2 through a sealing gasket by bolts, and the sealing device also comprises a static ring 4, a flange plate 5, a movable ring 6, a spring seat 7 and a spring 9,
the one end of quiet ring 4 is provided with first annular seal arch, the annular equipartition is opened on the outer wall of quiet ring 4 has a set of semicircular bolt spacing groove 10, quiet ring 4 cover is on step axle 1, ring flange 5 fixes quiet ring 4 on gland 3 through a set of first bolt 11, the screw rod of a set of first bolt 11 is located the semicircular bolt spacing groove 10 that corresponds, the rotating ring 6 is through the cover on step axle 1, and through the outer wall sealing connection of sealing washer with step axle 1, the one end of rotating ring 6 is provided with the second annular seal arch, spring holder 7 is fixed on step axle 1, spring 9 overlaps on the outer wall of rotating ring 6 and spring holder 7, the one end of spring 9 is fixed on rotating ring 6, the other end of spring 9 is fixed on spring holder 7, compress tightly the second annular seal arch of rotating ring 6 on the first annular seal arch of quiet ring 4 through spring 9.
The other end of the movable ring 6 is provided with a group of limiting grooves 12, and one end of the spring seat 7 is provided with a group of limiting bulges 13 matched with the limiting grooves 12 for use.
The stationary ring 4 is made of polytetrafluoroethylene.
The working mode and principle are as follows: when the step shaft 1 rotates, the spring seat 7 is driven to rotate, the spring seat 7 transmits torque to the moving ring 6 through the matching of the limiting protrusions 13 and the limiting grooves 12, the moving ring 6 rotates along with the rotating ring, and the second annular sealing protrusions of the moving ring 6 are pressed on the first annular sealing protrusions all the time through the elastic force of the spring 9 to keep sealing connection. Because the static ring 4 is made of polytetrafluoroethylene material and has lower hardness, the static ring is tightly pressed on the gland 3 through the flange 5. A set of first bolts 11 are positioned in the corresponding semicircular bolt limiting grooves 10, so that the static ring 4 can be prevented from axially rotating, and the stability of the static ring is improved. The spring seat 7 is prevented from rotating axially by the flat key 14, and is prevented from moving axially forward and backward by the step surface of the step shaft 1.
Claims (4)
1. A mechanical sealing device comprises a step shaft (1), a sealing cavity (2) and a gland (3), wherein the gland (3) is connected with the sealing cavity (2) through a sealing gasket by a bolt, and is characterized by further comprising a static ring (4), a flange plate (5), a movable ring (6), a spring seat (7) and a spring (9),
one end of a static ring (4) is provided with a first annular sealing bulge, a group of semicircular bolt limiting grooves (10) are annularly and uniformly distributed on the outer wall of the static ring (4), the static ring (4) is sleeved on a step shaft (1), a flange plate (5) fixes the static ring (4) on a gland (3) through a group of first bolts (11), a screw rod of the group of first bolts (11) is positioned in the corresponding semicircular bolt limiting groove (10), a movable ring (6) is sleeved on the step shaft (1) and is in sealing connection with the outer wall of the step shaft (1) through a sealing ring, one end of the movable ring (6) is provided with a second annular sealing bulge, a spring seat (7) is fixed on the step shaft (1), a spring (9) is sleeved on the outer walls of the movable ring (6) and the spring seat (7), one end of the spring (9) is fixed on the movable ring (6), and the other end of the spring (9) is fixed on the spring seat (7), the second annular sealing bulge of the movable ring (6) is pressed on the first annular sealing bulge of the static ring (4) through a spring (9).
2. A mechanical seal according to claim 1, wherein the other end of the rotating ring (6) is provided with a set of limiting grooves (12), and one end of the spring seat (7) is provided with a set of limiting protrusions (13) which are matched with the limiting grooves (12).
3. A mechanical seal according to claim 1, wherein the stationary ring (4) is made of teflon.
4. A mechanical sealing arrangement according to claim 1, characterized in that the spring seat (7) is keyed to the step shaft (1) by means of a flat key (14), one end of the spring seat (7) abutting against the step surface of the step shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022781657.XU CN213899884U (en) | 2020-11-26 | 2020-11-26 | Mechanical sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022781657.XU CN213899884U (en) | 2020-11-26 | 2020-11-26 | Mechanical sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213899884U true CN213899884U (en) | 2021-08-06 |
Family
ID=77122983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022781657.XU Active CN213899884U (en) | 2020-11-26 | 2020-11-26 | Mechanical sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213899884U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547953A (en) * | 2018-06-15 | 2018-09-18 | 三门县金帆橡塑机械厂 | A kind of sealing device for mixer |
-
2020
- 2020-11-26 CN CN202022781657.XU patent/CN213899884U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547953A (en) * | 2018-06-15 | 2018-09-18 | 三门县金帆橡塑机械厂 | A kind of sealing device for mixer |
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