CN212868450U - Mechanical sealing device of sulfur recovery process flow pump - Google Patents
Mechanical sealing device of sulfur recovery process flow pump Download PDFInfo
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- CN212868450U CN212868450U CN202021425649.5U CN202021425649U CN212868450U CN 212868450 U CN212868450 U CN 212868450U CN 202021425649 U CN202021425649 U CN 202021425649U CN 212868450 U CN212868450 U CN 212868450U
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Abstract
The utility model discloses a mechanical sealing device of a sulfur recovery process flow pump, which comprises a shaft sleeve fixedly sleeved on a main shaft, and a movable ring and a stationary ring which are used for matching and sealing; one of the front ends of the two movable rings is fixed on the shaft sleeve by a fixture block, and the other of the rear ends of the two movable rings is fixed on the shaft sleeve by a movable ring transmission seat; a compensation spring for compensation is arranged between the two static rings; the movable ring transmission seat is fixed on the shaft sleeve by using a set screw; an annular groove is formed in the shaft sleeve and located behind the movable ring transmission seat, and a parallel clamping ring used for limiting the movable ring transmission seat is embedded in the annular groove. The parallel clamping rings are arranged on the main shaft to limit the movable ring transmission seat, so that the set screw is guaranteed not to be subjected to axial thrust, and the verticality of the movable ring transmission seat and the main shaft is not influenced. Compared with a structure without a parallel clamping ring, the mechanical sealing structure has great improvement on the stability of the mechanical sealing performance.
Description
Technical Field
The utility model relates to a mechanical seal device.
Background
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. Mechanical seals, also called face seals, are defined in the relevant national standards as follows: "means for preventing fluid leakage, which is composed of at least one pair of end faces perpendicular to the rotation axis, and which are kept in fit and relatively slide under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism and the cooperation of the auxiliary seal. "
The existing mechanical sealing device of the sulfur recovery process pump utilizes a bolt perpendicular to a main shaft to install a movable ring transmission seat on a shaft sleeve. During use, the static ring is subjected to the thrust of the compensating spring for compensating the wear between the static and dynamic rings, and the thrust is finally transmitted to the bolt through the static and dynamic rings. Since the screw hole formed in the shaft is formed in an arc shape, the screw thread on the surface of the bolt is easily deformed. After the screw thread warp, under great spring effort, the displacement takes place easily for the rotating ring transmission seat, hardly guarantees the straightness that hangs down of rotating ring transmission seat and axle to lead to the rotating ring subassembly can not keep perpendicular with the axle. This may cause the sealing surface to fail to properly engage and operate, resulting in leakage of the mechanical seal.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a sulphur is retrieved process flow pump mechanical seal device carries on spacingly to the rotating ring transmission seat, avoids it to take place the displacement and leads to rotating ring and main shaft out of plumb.
In order to solve the technical problems, the technical scheme of the utility model is to adopt a mechanical sealing device of a sulfur recovery process flow pump, which comprises a shaft sleeve fixedly sleeved on a main shaft, and a movable ring and a static ring which are used for matching and sealing; the movable rings and the static rings are divided into a front group and a rear group, the two movable rings are close to the outer side, and the two static rings are close to the inner side; the static ring is fixed on the circulating water sleeve, one of the front ends of the two movable rings is fixed on the shaft sleeve by virtue of a fixture block, and the other of the rear ends of the two movable rings is fixed on the shaft sleeve by virtue of a movable ring transmission seat; a compensation spring for compensation is arranged between the two static rings; the movable ring transmission seat is fixed on the shaft sleeve by using a set screw; an annular groove is formed in the shaft sleeve and located behind the movable ring transmission seat, and a parallel clamping ring used for limiting the movable ring transmission seat is embedded in the annular groove.
As a modification, the front and rear sides of the circulating water jacket are provided with glands.
As a further improvement, a shielding cover is arranged between the movable ring transmission seat and the pressing cover.
As another further improvement, a push ring is arranged between the compensation spring and the static ring.
The utility model discloses an useful part lies in: the mechanical sealing device with the structure has the advantages that the parallel clamping rings are arranged on the main shaft to limit the movable ring transmission seat, so that the set screw is ensured not to receive axial thrust, and the verticality of the movable ring transmission seat and the main shaft is not influenced. Compared with a structure without a parallel clamping ring, the mechanical sealing structure has great improvement on the stability of the mechanical sealing performance.
Meanwhile, the set screw is not influenced by axial thrust, so that the transmission performance is guaranteed. The situation that the bolt loosens and slips, the transmission is lost and the shaft is damaged can not occur easily.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The labels in the figure are: the device comprises a parallel clamping ring 1, a shielding cover 2, a movable ring transmission seat 3, a movable ring 4, a static ring 5, a gland 6, a circulating water jacket 7, a gland 8, a push ring 9, a static ring 10, a movable ring 11, a shaft sleeve 12, a compensating spring 13, a clamping block 14 and a set screw 15.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the specific embodiments.
As shown in fig. 1, the present invention comprises a shaft sleeve 12 fixedly sleeved on a main shaft, and a movable ring and a stationary ring for matching sealing; the movable ring and the static ring are divided into a front group and a rear group, namely a movable ring 4, a static ring 5, a movable ring 11 and a static ring 10, wherein the two movable rings are close to the outer side, and the two static rings are close to the inner side; the static ring 5 and the static ring 10 are fixed on the circulating water jacket 7, and the front side and the rear side of the circulating water jacket 7 are provided with a gland 8 and a gland 6. One movable ring 11 at the front end of the two movable rings is fixed on the shaft sleeve 12 by virtue of a fixture block 14, and one movable ring 4 at the rear end is fixed on the shaft sleeve 12 by virtue of a movable ring transmission seat 3; the shielding cover 2 is arranged between the movable ring transmission seat 3 and the gland 6. A compensation spring 13 for compensation is arranged between the two static rings; a push ring 9 is arranged between the compensation spring 13 and the static ring 5 and the static ring 10. The movable ring transmission seat 3 is fixed on the shaft sleeve 12 by a set screw 15; an annular groove is formed in the shaft sleeve 12 and located behind the moving ring transmission seat 3, and a parallel clamping ring 1 used for limiting the moving ring transmission seat 3 is embedded in the annular groove.
When the sealing device works, the movable ring 4 is matched and sealed with the static ring 5, the movable ring 11 and the static ring 10. Axial thrust from compensating spring 13 is transmitted to rotating ring drive seat 3 through stationary ring 5 rotating ring 4 on, because parallel snap ring 1's limiting displacement for thrust can't transmit on holding screw 15, has ensured the perpendicular of rotating ring drive seat 3 with the main shaft.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the spirit and scope of the invention, and such modifications and enhancements are intended to be within the scope of the invention.
Claims (4)
1. A mechanical sealing device of a sulfur recovery process flow pump comprises a shaft sleeve fixedly sleeved on a main shaft, and a movable ring and a stationary ring which are used for matching sealing; the method is characterized in that: the movable rings and the static rings are divided into a front group and a rear group, the two movable rings are close to the outer side, and the two static rings are close to the inner side; the static ring is fixed on the circulating water sleeve, one of the front ends of the two movable rings is fixed on the shaft sleeve by virtue of a fixture block, and the other of the rear ends of the two movable rings is fixed on the shaft sleeve by virtue of a movable ring transmission seat; a compensation spring for compensation is arranged between the two static rings; the movable ring transmission seat is fixed on the shaft sleeve by using a set screw; an annular groove is formed in the shaft sleeve and located behind the movable ring transmission seat, and a parallel clamping ring used for limiting the movable ring transmission seat is embedded in the annular groove.
2. The mechanical seal device of the sulfur recovery process flow pump of claim 1, wherein: the front side and the rear side of the circulating water jacket are provided with glands.
3. A sulfur recovery process flow pump mechanical seal according to claim 2 wherein: and a shielding cover is arranged between the movable ring transmission seat and the gland.
4. The mechanical seal device of the sulfur recovery process flow pump of claim 1, wherein: and a push ring is arranged between the compensation spring and the static ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021425649.5U CN212868450U (en) | 2020-07-20 | 2020-07-20 | Mechanical sealing device of sulfur recovery process flow pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021425649.5U CN212868450U (en) | 2020-07-20 | 2020-07-20 | Mechanical sealing device of sulfur recovery process flow pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212868450U true CN212868450U (en) | 2021-04-02 |
Family
ID=75215393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021425649.5U Active CN212868450U (en) | 2020-07-20 | 2020-07-20 | Mechanical sealing device of sulfur recovery process flow pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212868450U (en) |
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2020
- 2020-07-20 CN CN202021425649.5U patent/CN212868450U/en active Active
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