CN212775584U - Mechanical sealing device - Google Patents
Mechanical sealing device Download PDFInfo
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- CN212775584U CN212775584U CN202021547866.1U CN202021547866U CN212775584U CN 212775584 U CN212775584 U CN 212775584U CN 202021547866 U CN202021547866 U CN 202021547866U CN 212775584 U CN212775584 U CN 212775584U
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- ring
- spindle
- main shaft
- movable ring
- movable
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Abstract
The utility model discloses a mechanical sealing device, which comprises a static ring and a dynamic ring; the main shaft comprises a main shaft main body part and a main shaft shoulder part, one end of the rotating ring is abutted against the main shaft shoulder part of the main shaft, the other end of the rotating ring is abutted against one end of the stationary ring, which is far away from the rotating ring, is sleeved with an end cover, the main shaft is arranged in the machine shell, the main shaft extends out of the machine shell, and the end cover is sleeved on the main shaft and is fixedly connected with the machine shell; the utility model has simple structure, the movable ring is fixed on the main shaft through the fixing pin, the sealing reliability is ensured, and the movable ring is prevented from being pushed out or displacement causes the sealing failure; the sealing performance is good, the work is reliable, and the leakage amount is less.
Description
Technical Field
The utility model relates to a mechanical seal field specifically is a mechanical seal device.
Background
The mechanical seal is a device for preventing fluid leakage, which is formed by at least one pair of end faces perpendicular to the rotation axis, and the end faces are kept in fit and relatively slide under the action of fluid pressure and the elastic force (or magnetic force) of a compensation mechanism and the cooperation of an auxiliary seal.
The mechanical seal is a shaft seal device of a rotating machine. Such as centrifugal pumps, centrifuges, reaction kettles, compressors, and the like. Since the drive shaft extends through the inside and outside of the apparatus, there is a circumferential gap between the shaft and the apparatus through which the medium in the apparatus leaks out, and if the pressure in the apparatus is lower than atmospheric pressure, air leaks into the apparatus, so that a shaft seal device must be provided to prevent leakage. The shaft seal has many kinds, and the mechanical seal has the advantages of small leakage amount, long service life and the like, so the mechanical seal is the most important shaft sealing mode in the devices in the world.
The mechanical seal ring (stationary ring) is an axially running component. The design of the sealing ring needs to consider the following points: concentricity of the sealing ring, heat transmission and dissipation of the auxiliary sealing material, a driving device, pressure of a spring, mechanical seal installation and the like. Many mechanical seal rings require a diameter balance to be considered. The shape of the sealing ring varies from design to design.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a mechanical seal device to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a mechanical sealing device comprises a static ring and a dynamic ring; the main shaft comprises a main shaft main body part and a main shaft shoulder part, one end of the rotating ring is abutted against the main shaft shoulder part of the main shaft, the other end of the rotating ring is abutted against one end of the stationary ring, which is far away from the rotating ring, is sleeved with an end cover, the main shaft is arranged in the machine shell, the main shaft extends out of the machine shell, and the end cover is sleeved on the main shaft and is fixedly connected with the machine shell; a plurality of first fixing holes are formed in the left end face of the movable ring, a second fixing hole matched with the first fixing holes is also formed in the shaft shoulder of the main shaft, fixing pins are fixedly installed in the first fixing holes and the second fixing holes and used for preventing the movable ring from rotating around the main shaft, and the movable ring keeps relatively static to the main shaft; the left end face of quiet ring is flaring form, and the right-hand member face of quiet ring is equipped with installation step portion, offers on the end cover with the mounting groove of installation step portion adaptation, and installs compression spring in this mounting groove, compression spring's right-hand member and mounting groove's bottom surface butt, compression spring's left end and the terminal surface butt of installation step portion.
Furthermore, a first sealing ring mounting groove is formed in the movable ring, and a first sealing ring is arranged in the first sealing ring mounting groove.
Furthermore, the static ring and the dynamic ring are both made of alumina ceramics.
Furthermore, the static ring and the dynamic ring are both made of pressureless sintered silicon carbide.
Compared with the prior art, the beneficial effects of the utility model are that:
the structure is simple, the movable ring is fixed on the main shaft through the fixing pin, the sealing reliability is ensured, and the sealing failure caused by the pushing out or displacement of the movable ring is prevented; the sealing performance is good, the work is reliable, and the leakage amount is less.
Drawings
Fig. 1 is a schematic structural view of a mechanical sealing device.
Fig. 2 is a schematic diagram of a structure at a in a mechanical seal device.
Fig. 3 is a left side view of a stationary ring in a mechanical seal device.
Fig. 4 is a right side view of a stationary ring in a mechanical seal.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Referring to fig. 1-4, a mechanical seal device includes a stationary ring 300 and a moving ring 200; the stationary ring 300 and the moving ring 200 are both mounted on the main shaft 100,
wherein the rotating ring 200 is fixedly arranged on the main shaft 100, the static ring 300 is sleeved on the main shaft 100 in a sliding way,
the spindle 100 includes a spindle body portion 110 and a spindle shoulder portion 120,
one end of the movable ring 200 is abutted against the spindle shoulder 120 of the spindle 100, the other end of the movable ring 200 is abutted against one end of the stationary ring 300, and one end of the stationary ring 300, which is away from the movable ring 200, is sleeved with the end cover 400, wherein the spindle 100 is installed in the machine shell, the spindle 100 extends out of the machine shell, and the end cover 400 is sleeved on the spindle 100 and is fixedly connected with the machine shell;
specifically, a plurality of first fixing holes 201 are formed in the left end face of the movable ring 200, a second fixing hole 202 matched with the first fixing holes 201 is also formed in the spindle shoulder 120, fixing pins 203 are fixedly installed in the first fixing holes 201 and the second fixing holes 202, and the fixing pins 203 are used for preventing the movable ring 200 from rotating around the spindle 100, so that the movable ring 200 keeps relatively static to the spindle 100; meanwhile, a first sealing ring mounting groove 204 is formed in the movable ring 200, wherein a first sealing ring 205 is arranged in the first sealing ring mounting groove 204, and the first sealing ring 205 is used for preventing leakage between the movable ring 200 and the spindle 100;
the left end face of the static ring 300 (namely the end face of the static ring 300 abutted against the movable ring 200) is flared, the right end face of the static ring 300 is provided with an installation step part 301, an installation groove 401 matched with the installation step part 301 is formed in the end cover 400, a compression spring 500 is installed in the installation groove 401, the right end of the compression spring 500 is abutted against the bottom face of the installation groove 401, and the left end of the compression spring 500 is abutted against the end face of the installation step part 301;
specifically, the stationary ring 300 and the moving ring 200 are both made of alumina ceramics;
specifically, the static ring 300 and the dynamic ring 200 are both made of pressureless sintered silicon carbide.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (4)
1. A mechanical sealing device comprises a static ring and a dynamic ring; the spindle is characterized in that the static ring and the movable ring are both arranged on the spindle, the movable ring is fixedly arranged on the spindle, the static ring is sleeved on the spindle in a sliding manner and comprises a spindle main body part and a spindle shaft shoulder part, one end of the movable ring is abutted against the spindle shaft shoulder part of the spindle, the other end of the movable ring is abutted against one end of the static ring, which is far away from the movable ring, is sleeved with an end cover, the spindle is arranged in the machine shell, the spindle extends out of the machine shell, and the end cover is sleeved on the spindle and is fixedly connected with the machine; a plurality of first fixing holes are formed in the left end face of the movable ring, a second fixing hole matched with the first fixing holes is also formed in the shaft shoulder of the main shaft, fixing pins are fixedly installed in the first fixing holes and the second fixing holes and used for preventing the movable ring from rotating around the main shaft, and the movable ring keeps relatively static to the main shaft; the left end face of quiet ring is flaring form, and the right-hand member face of quiet ring is equipped with installation step portion, offers on the end cover with the mounting groove of installation step portion adaptation, and installs compression spring in this mounting groove, compression spring's right-hand member and mounting groove's bottom surface butt, compression spring's left end and the terminal surface butt of installation step portion.
2. The mechanical seal device according to claim 1, wherein a first seal ring mounting groove is defined in the movable ring, and a first seal ring is disposed in the first seal ring mounting groove.
3. The mechanical seal of claim 1, wherein the stationary ring and the rotating ring are both made of alumina ceramic.
4. The mechanical seal of claim 1, wherein the stationary ring and the rotating ring are both pressureless sintered silicon carbide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021547866.1U CN212775584U (en) | 2020-07-30 | 2020-07-30 | Mechanical sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021547866.1U CN212775584U (en) | 2020-07-30 | 2020-07-30 | Mechanical sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212775584U true CN212775584U (en) | 2021-03-23 |
Family
ID=75049008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021547866.1U Active CN212775584U (en) | 2020-07-30 | 2020-07-30 | Mechanical sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212775584U (en) |
-
2020
- 2020-07-30 CN CN202021547866.1U patent/CN212775584U/en active Active
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