CN213541295U

CN213541295U - Single-end-face balanced sealing device

Info

Publication number: CN213541295U
Application number: CN202022452490.2U
Authority: CN
Inventors: 王波; 舒畅
Original assignee: Sichuan Jiulong Seal Manufacturing Co ltd
Current assignee: Sichuan Jiulong Seal Manufacturing Co ltd
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-06-25
Anticipated expiration: 2030-10-29

Abstract

The utility model discloses a balanced type sealing device of single-ended face, including the suit at the epaxial axle sleeve of pivot, still include the bearing frame of suit in proper order along axle sleeve axis direction, seal and end cover, the axle sleeve is equipped with a tapering section, the bearing frame suit is in the tapering section, be provided with the bearing in the bearing frame, the bearing endotheca is installed to the inner circle of bearing, bearing endotheca and tapering section adaptation, be formed with the washing chamber between seal and the axle sleeve, be formed with the installation cavity between end cover and the axle sleeve, it is linked together with the installation cavity to wash the chamber, seted up on the seal and washed communicating inlet in chamber and liquid outlet, the washing passageway has been seted up on the seal, the both ends of wasing. Through the guide effect of tapering section, make the installation and the dismantlement of bearing and bearing frame become simple swift, through wasing the passageway and with inlet and installation cavity intercommunication simultaneously, be convenient for wash the installation cavity, avoid causing the jam of quiet ring and compensation spring's inefficacy.

Description

Single-end-face balanced sealing device

Technical Field

The utility model relates to a sealed technical field specifically is a balanced type sealing device of single-end face.

Background

The stirrer mechanical seal used for the desulfurization stirrer of the power plant is long in stirring shaft and high in turbulence, so that the stirrer mechanical seal is generally provided with a bearing device, the aligning effect is achieved, and the influence of the stirring shaft turbulence on the mechanical seal is reduced. The existing stirrer mechanical seal and bearing assembly design generally comprises the following structures: comprises a shaft sleeve, a movable ring and a static ring are arranged outside the shaft sleeve, a sealing seat, a bearing and a bearing gland are arranged outside the static ring, an inner hole of the bearing is tightly matched and directly sleeved on the outer edge of the shaft sleeve, the outer edge of the bearing is also directly sleeved in the sealing seat, the assembly is very difficult, the mechanical seal has problems in the use process and needs to be detached for maintenance,

simultaneously the inside washing cavity space that encloses of current sealing device is narrow, is not convenient for reveal the emission of thing, and the leakage thing that produces when leading to using blocks up quiet ring hole and spring, leads to sealed inefficacy, and the cavity that quiet ring and compensating spring belonged to simultaneously does not communicate with each other with washing cavity, leads to the washing of quiet ring and spring to become difficult, can not take out the leakage thing in the cavity, uses for a long time and can cause the jam of quiet ring and the inefficacy of spring equally.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a balanced type sealing device of single-ended face, through the guide effect of tapering section, make the installation and the dismantlement of bearing and bearing frame become simple swift, communicate inlet and installation cavity through wasing the passageway simultaneously, be convenient for wash the installation cavity, avoid causing the jam of quiet ring and compensation spring's inefficacy.

The purpose of the utility model is realized through the following technical scheme: a single end face balance type sealing device comprises a shaft sleeve sleeved on a rotating shaft, and further comprises a bearing seat, a sealing body and a sealing end cover which are sequentially sleeved along the axis direction of the shaft sleeve, wherein the shaft sleeve is provided with a taper section, the bearing seat is sleeved on the taper section, a bearing is arranged in the bearing seat, a bearing partition plate is arranged between the bearing and the sealing body, a bearing inner sleeve is arranged on an inner ring of the bearing, the bearing inner sleeve is matched with the taper section, two ends of the sealing body are respectively and fixedly connected with the bearing seat and the sealing end cover, a cleaning cavity is formed between the sealing body and the shaft sleeve, an installation cavity is formed between the sealing end cover and the shaft sleeve, the cleaning cavity is communicated with the installation cavity, a liquid inlet and a liquid outlet which are communicated with the cleaning cavity are formed on the sealing body, and, two ends of the cleaning channel are respectively communicated with the liquid inlet and the installation cavity;

the sealing structure is characterized in that a sealing assembly is arranged in the mounting cavity and comprises a compensating spring and a static ring, the static ring is arranged in the sealing end cover, the compensating spring for compensating the pressure of the static ring is arranged between the sealing body and the static ring, the shaft sleeve is far away from one end of the bearing seat and is fixedly connected with a movable ring, and the movable ring is in sealing fit with the static ring.

Furthermore, an installation groove is formed in one end, close to the sealing end cover, of the sealing body, and the compensation spring is installed in the installation groove.

Furthermore, a positioning plate is fixedly mounted on the shaft sleeve and fixedly connected with the bearing seat.

Further, both ends of the bearing are provided with oil seals.

Furthermore, an annular groove I is formed in the inner wall of the shaft sleeve, and a sealing ring I is arranged in the annular groove I.

Furthermore, a second sealing ring is arranged on the matching surface of the sealing end cover and the static ring.

Furthermore, a third sealing ring is arranged on the matching surface of the movable ring and the shaft sleeve.

Furthermore, a fourth sealing ring is arranged on the matching surface of the bearing clapboard and the bearing seat.

The utility model has the advantages that:

1. the utility model provides a balanced type sealing device of single-ended face, is provided with the tapering section on the axle sleeve, installs the bearing on the axle sleeve through the bearing endotheca, because the tapering has the guide effect, makes the installation and the dismantlement of bearing and bearing frame become simple swift, the installation and the change of the bearing of being convenient for.

2. Offer on the seal with wash communicating inlet and liquid outlet in chamber, and wash the both ends of passageway and communicate with each other with inlet and installation cavity respectively, sealing device reveals the commodity circulation when moving and goes into the washing intracavity, discharge through inlet and liquid outlet, avoid blockking up in sealing device, cause the jam of quiet ring and the inefficacy of compensating spring, pour into the washing liquid into to the washing intracavity through the inlet simultaneously, partial washing liquid flows into the installation cavity through wasing the passageway, wash quiet ring and compensating spring in the installation cavity, because wash the chamber and communicate with each other with the installation cavity, the washing liquid flows into the washing intracavity, discharge from the liquid outlet at last, realize the cleaning process, furtherly has avoided the jam of quiet ring and the inefficacy of compensating spring.

Drawings

Fig. 1 is a schematic view of an internal structure of a single-end face balanced sealing device according to the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

in the figure, 1-shaft sleeve, 2-bearing seat, 3-sealing body, 4-sealing end cover, 5-taper section, 6-bearing, 7-bearing inner sleeve, 8-cleaning cavity, 9-mounting cavity, 10-liquid inlet, 11-liquid outlet, 12-cleaning channel, 13-moving ring, 14-compensating spring, 15-static ring, 16-bearing clapboard, 17-mounting groove, 18-positioning plate, 19-oil seal, 20-sealing ring I, 21-sealing ring II, 22-sealing ring III and 23-sealing ring IV.

Detailed Description

The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.

As shown in fig. 1 and fig. 2, a single end face balance type sealing device comprises a shaft sleeve 1 sleeved on a rotating shaft, and further comprises a bearing seat 2, a sealing body 3 and a sealing end cover 4 which are sequentially sleeved along the axial direction of the shaft sleeve 1, the shaft sleeve 1 is provided with a taper section 5, the bearing seat 2 is sleeved on the taper section 5, a bearing 6 is arranged in the bearing seat 2, a bearing partition plate 16 is arranged between the bearing 6 and the sealing body 3, an inner bearing sleeve 7 is arranged on an inner ring of the bearing 6, the inner bearing sleeve 7 is matched with the taper section 5, two ends of the sealing body 3 are respectively fixedly connected with the bearing seat 2 and the sealing end cover 4, a cleaning cavity 8 is formed between the sealing body 3 and the shaft sleeve 1, a mounting cavity 9 is formed between the sealing end cover 4 and the shaft sleeve 1, the cleaning cavity 8 is communicated with the mounting cavity 9, a liquid inlet 10 and a, two ends of the cleaning channel 12 are respectively communicated with the liquid inlet 10 and the installation cavity 9;

be provided with seal assembly in the installation cavity 9, seal assembly includes compensating spring 14 and quiet ring 15, and quiet ring 15 is installed in end cover 4 for compensating 15 pressure's of quiet ring compensating spring 14 installs between seal 3 and quiet ring 15, and axle sleeve 1 keeps away from the one end fixedly connected with rotating ring 13 of bearing frame 2, rotating ring 13 and the sealed cooperation of quiet ring 15.

The shaft sleeve 1 is provided with a taper section 5, the bearing 6 is arranged on the shaft sleeve 1 through a bearing inner sleeve 7, and the taper has a guiding effect, so that the installation and the disassembly of the bearing 6 and the bearing seat 2 become simple and rapid, and the installation and the replacement of the bearing 6 are convenient;

a small amount of medium is leaked when the sealing device runs, the leaked medium flows into the cleaning cavity 8 and is discharged through the liquid inlet 10 and the liquid outlet 11, so that the blockage in the sealing device is avoided, the blockage of the static ring 15 and the failure of the compensation spring 14 are avoided, meanwhile, cleaning liquid is injected into the cleaning cavity 8 through the liquid inlet 10, part of the cleaning liquid flows into the mounting cavity 9 through the cleaning channel 12, the static ring 15 and the compensation spring 14 in the mounting cavity 9 are cleaned, the cleaning liquid in the mounting cavity 9 flows into the cleaning cavity 9 because the cleaning cavity 8 is communicated with the mounting cavity 9, and is finally discharged from the liquid outlet 11, so that the cleaning process is realized, and the blockage of the static ring 15 and the failure of the compensation spring 14 are further avoided; during lubrication, the lubricating pipe is directly communicated in the cleaning channel 12, lubricating liquid is directly injected into the mounting cavity 9 through the cleaning channel 12, the compensating spring 14 and the static ring 15 are lubricated, and therefore the lubricating effect is improved while the injection of the lubricating liquid is reduced.

As shown in fig. 1, it is worth noting that liquid inlet 10 and liquid outlet 11 are arranged in the same direction, and when the cleaning liquid is injected into the cleaning cavity 8 through the liquid inlet 10 for cleaning, the cleaning liquid is discharged from the liquid outlet 11 after being filled with the cleaning cavity 8 and the mounting cavity 9, so that the cleaning cavity 8 and the mounting cavity 9 are comprehensively cleaned, and the cleaning effect is better.

Further, one end of the sealing body 3 close to the sealing end cover 4 is provided with an installation groove 17, and the compensation spring 14 is installed in the installation groove 17. One end of the compensation spring 14 is mounted to the sealing body 3 through the mounting groove 17.

Further, a positioning plate 18 is fixedly mounted on the shaft sleeve 1, and the positioning plate 18 is fixedly connected with the bearing seat 2. The mounting position of the bearing seat 2 is found quickly through the positioning plate 18, the bearing seat 2 is directly connected with the positioning plate 18, and then other components are sequentially mounted, so that the sealing device is mounted more quickly.

Further, both ends of the bearing 6 are provided with oil seals 19.

Furthermore, the inner wall of the shaft sleeve 1 is provided with a first annular groove, and a first sealing ring 20 is arranged in the first annular groove. The sealing effect between the shaft sleeve 1 and the rotating shaft is improved through the first sealing ring 20.

Furthermore, a second sealing ring 21 is arranged on the matching surface of the sealing end cover 4 and the static ring 15. The sealing effect between the sealing end cover 4 and the static ring 15 is improved by the second sealing ring 21.

Furthermore, a third sealing ring 22 is arranged on the matching surface of the movable ring 13 and the shaft sleeve 1. The sealing effect between the movable ring 13 and the shaft sleeve 1 is improved by the sealing ring III 22.

Further, a sealing ring four 23 is arranged on the matching surface of the bearing partition plate 16 and the bearing seat 2. The sealing effect between the bearing spacer 16 and the bearing seat 2 is increased by the sealing ring four 23.

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. The single-end-face balanced sealing device comprises a shaft sleeve (1) sleeved on a rotating shaft, and is characterized by further comprising a bearing seat (2), a sealing body (3) and a sealing end cover (4) which are sequentially sleeved along the axis direction of the shaft sleeve (1), wherein the shaft sleeve (1) is provided with a taper section (5), the bearing seat (2) is sleeved on the taper section (5), a bearing (6) is arranged in the bearing seat (2), a bearing partition plate (16) is arranged between the bearing (6) and the sealing body (3), a bearing inner sleeve (7) is arranged on an inner ring of the bearing (6), the bearing inner sleeve (7) is matched with the taper section (5), two ends of the sealing body (3) are respectively and fixedly connected with the bearing seat (2) and the sealing end cover (4), a cleaning cavity (8) is formed between the sealing body (3) and the shaft sleeve (1), an installation cavity (9) is formed between the sealing end cover (4) and the shaft sleeve (1), the cleaning cavity (8) is communicated with the installation cavity (9), a liquid inlet (10) and a liquid outlet (11) which are communicated with the cleaning cavity (8) are formed in the sealing body (3), a cleaning channel (12) is formed in the sealing body (3), and two ends of the cleaning channel (12) are respectively communicated with the liquid inlet (10) and the installation cavity (9);

be provided with seal assembly in installation cavity (9), seal assembly includes compensating spring (14) and quiet ring (15), install quiet ring (15) in end cover (4), be used for compensating the compensating spring (14) of quiet ring (15) pressure to install seal (3) with between quiet ring (15), axle sleeve (1) is kept away from the one end fixedly connected with rotating ring (13) of bearing frame (2), rotating ring (13) with quiet ring (15) seal fit.

2. A single end face balanced type sealing device according to claim 1, characterized in that an installation groove (17) is opened at one end of the sealing body (3) close to the sealing end cover (4), and the compensation spring (14) is installed in the installation groove (17).

3. A single end face balanced seal according to claim 1, characterized in that a positioning plate (18) is fixedly mounted on the shaft sleeve (1), and the positioning plate (18) is fixedly connected with the bearing seat (2).

4. A single ended balanced seal arrangement according to claim 1, wherein both ends of the bearing (6) are provided with oil seals (19).

5. The single-end-face balance type sealing device as claimed in claim 1, wherein a first annular groove is formed in the inner wall of the shaft sleeve (1), and a first sealing ring (20) is arranged in the first annular groove.

6. A single end face balanced seal according to claim 5 characterised in that a second seal ring (21) is provided on the mating face of the end closure (4) and the stationary ring (15).

7. A single end face balanced seal according to claim 6 characterised in that the mating surface of the rotating ring (13) and the sleeve (1) is provided with a third sealing ring (22).

8. A single-ended balanced seal according to claim 7 wherein a fourth seal ring (23) is provided on the mating surface of the bearing spacer (16) with the bearing housing (2).