CN213628846U - Back pressure type sealing structure for pressure container - Google Patents
Back pressure type sealing structure for pressure container Download PDFInfo
- Publication number
- CN213628846U CN213628846U CN202021232521.7U CN202021232521U CN213628846U CN 213628846 U CN213628846 U CN 213628846U CN 202021232521 U CN202021232521 U CN 202021232521U CN 213628846 U CN213628846 U CN 213628846U
- Authority
- CN
- China
- Prior art keywords
- flange
- gland
- sealing
- pressure
- packing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 52
- 210000004907 gland Anatomy 0.000 claims abstract description 37
- 238000012856 packing Methods 0.000 claims abstract description 21
- 230000003068 static effect Effects 0.000 claims abstract description 14
- 230000008901 benefit Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000945 filler Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Images
Landscapes
- Sealing Devices (AREA)
Abstract
The utility model discloses a back pressure formula seal structure for pressure vessel, including the fixed casing flange that sets up on the pressure vessel casing, its characterized in that: the improved sealing device is characterized in that a flange gland is fixedly connected to the shell flange through a connecting bolt, a sealing gasket is further arranged between the shell flange and the flange gland, a rotating shaft penetrates through the flange gland in the moving direction, a packing groove is formed in the upper portion of the flange gland, static sealing packing is filled in the packing groove, a packing gland is arranged above the static sealing packing, external threads are arranged on the outer wall of the flange gland and connected with a sealing nut through threads of the flange gland, the rotating shaft penetrates through a through hole formed in the center of the sealing nut, the flange gland is located on the end face of one end inside the pressure container shell, a rubber back pressure sealing sleeve is fixedly connected with the back pressure gland, and the rubber sealing sleeve is sleeved on the rotating shaft.
Description
Technical Field
The utility model relates to a pressure seal field, especially a back pressure formula seal structure for pressure vessel.
Background
In some cases, a rotating shaft (for example, a pressure vessel with a stirring blade) needs to be connected to the pressure vessel, if the rotating shaft is required to rotate normally, a certain gap needs to be left between the rotating shaft and a shell of the pressure vessel (or between the rotating shaft and a connecting and supporting member arranged on the shell), but the pressure in an inner cavity of the pressure vessel is greater than the pressure in the outside, so that the sealing problem needs to be considered. The sealing mechanism for the shaft mainly comprises a static seal and a dynamic seal, wherein the static seal has a better sealing effect, and the dynamic seal has a higher cost.
There is therefore a need for a method or apparatus that addresses the above-mentioned problems.
Disclosure of Invention
The utility model relates to a solve the above-mentioned not enough that prior art exists, provide a simple structure, design benefit, rationally distributed, whole low cost and sealed effectual back pressure formula seal structure.
The technical solution of the utility model is that: the utility model provides a back pressure formula seal structure for pressure vessel, includes the fixed casing flange 2 that sets up on pressure vessel casing 1, its characterized in that: the improved sealing device is characterized in that a flange gland 3 is fixedly connected to a housing flange 2 through a connecting bolt, a sealing gasket 4 is further arranged between the housing flange 2 and the flange gland 3, a rotating shaft 5 penetrates through the flange gland 3 in a movable mode, a packing groove is formed in the upper portion of the flange gland 3, static sealing packing 6 is filled in the packing groove, a packing gland 7 is arranged above the static sealing packing 6, external threads are formed in the outer wall of the flange gland 3 and are in threaded connection with the flange gland 3, a sealing nut 8 is arranged on the rotating shaft 5 in a penetrating mode and is arranged at the center of the sealing nut 8, the flange gland 3 is located on the end face of one end of the inner portion of a pressure container housing 1, a rubber back pressure sealing sleeve 10 is fixedly connected to the back pressure gland 9, and the rubber back pressure sealing sleeve 10 is sleeved.
Compared with the prior art, the utility model, have following advantage:
this kind of structure form's back pressure formula seal structure for pressure vessel, its simple structure, design benefit, it is rationally distributed, it is to the problem that traditional seal structure (dynamic seal and static seal) existed when using, a special structure is designed, it has packing seal structure (static seal) in addition, a rubber back pressure seal cover that can take place elastic deformation under pressure has still been designed, this seal cover can hold tightly on the surface of pivot when having high pressure in pressure vessel, thereby realize sealed, and the pressure in the pressure vessel is the bigger, the better sealing effect is better, thereby realized the back pressure seal. The sealing structure has the advantages of achieving a good sealing effect with relatively low cost, along with simple manufacturing process and low manufacturing cost, so that the sealing structure has various advantages, is particularly suitable for popularization and application in the field, and has a very wide market prospect.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The following description will explain embodiments of the present invention with reference to the drawings. As shown in fig. 1: a back pressure type sealing structure for a pressure container comprises a shell flange 2 fixedly arranged on a pressure container shell 1, a flange gland 3 is fixedly connected on the shell flange 2 through a connecting bolt, a sealing gasket 4 is further arranged between the shell flange 2 and the flange gland 3, a rotating shaft 5 is movably penetrated and connected in the flange gland 3, a packing groove is formed in the upper portion of the flange gland 3, static sealing packing 6 is filled in the packing groove, a packing gland 7 is arranged above the static sealing packing 6, external threads are arranged on the outer wall of the flange gland 3, a sealing nut 8 is in threaded connection with the flange gland 3, the rotating shaft 5 penetrates through a through hole formed in the center of the sealing nut 8, the flange gland 3 is arranged on the end face of one end inside the pressure container shell 1, and a rubber sealing gland back pressure 10 is further fixedly connected through a back pressure gland 9, the rubber back pressure sealing sleeve 10 is sleeved on the rotating shaft 5.
The utility model discloses back pressure formula seal structure's for pressure vessel working process as follows: when high pressure is kept in the pressure vessel shell 1, under the action of the high pressure, the rubber back-pressure sealing sleeve 10 can elastically deform and tightly hold the rotating shaft 5 (the rotating shaft 5 does not have the requirement of rotation under the high-pressure state), so that sealing is realized, if the sealing effect is better, the sealing nut 8 can be rotated, the sealing nut 8 presses the static sealing filler 6 downwards through the stuffing box cover 7, the static sealing filler 6 can also play a role in sealing, and therefore the sealing is realized at the rotating shaft 5 under the condition that the high pressure exists in the pressure vessel shell 1;
when the rotating shaft 5 is required to rotate, the pressure of the pressure container is relieved, and after the inner cavity of the pressure container becomes normal pressure, the rubber back-pressure sealing sleeve 10 recovers to be normal state under the action of self elasticity and is not contacted with the rotating shaft 5 any more, the sealing nut 6 rotates reversely, and the rotating shaft 5 can rotate normally.
Claims (1)
1. The utility model provides a back pressure formula seal structure for pressure vessel, includes fixed casing flange (2) that set up on pressure vessel casing (1), its characterized in that: the sealing device is characterized in that a flange gland (3) is fixedly connected onto the shell flange (2) through a connecting bolt, a sealing gasket (4) is further arranged between the shell flange (2) and the flange gland (3), a rotating shaft (5) is movably penetrated in the flange gland (3), a packing groove is formed in the upper portion of the flange gland (3), static sealing packing (6) is filled in the packing groove, a packing gland (7) is arranged above the static sealing packing (6), external threads are arranged on the outer wall of the flange gland (3), a sealing nut (8) is in threaded connection with the flange gland (3), the rotating shaft (5) penetrates through a through hole formed in the center of the sealing nut (8), the flange gland (3) is located on the end face of one end inside the pressure container shell (1), and a rubber back pressure sealing sleeve (10) is fixedly connected with the back pressure gland (9), the rubber back pressure sealing sleeve (10) is sleeved on the rotating shaft (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021232521.7U CN213628846U (en) | 2020-06-30 | 2020-06-30 | Back pressure type sealing structure for pressure container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021232521.7U CN213628846U (en) | 2020-06-30 | 2020-06-30 | Back pressure type sealing structure for pressure container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213628846U true CN213628846U (en) | 2021-07-06 |
Family
ID=76620272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021232521.7U Active CN213628846U (en) | 2020-06-30 | 2020-06-30 | Back pressure type sealing structure for pressure container |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213628846U (en) |
-
2020
- 2020-06-30 CN CN202021232521.7U patent/CN213628846U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107017515B (en) | Sealing structure and rotary connector adopting same | |
| CN213628846U (en) | Back pressure type sealing structure for pressure container | |
| CN205401721U (en) | Electronic flapper liquid packing seal structure | |
| CN209012115U (en) | A kind of portable mechanical face seals of centrifugal pumps | |
| CN206795870U (en) | A kind of rotary joint sealing structure | |
| CN210141216U (en) | Mechanical sealing device of centrifugal pump | |
| CN201007354Y (en) | Rotational axis sealing device | |
| CN209569339U (en) | Contact type sealing device for multi-line cutting machine high-speed bearing case | |
| CN211647972U (en) | Rotary joint for horizontal directional drilling machine and horizontal directional drilling machine | |
| CN220979916U (en) | Shaft end sealing structure of high-temperature fan | |
| CN211315201U (en) | Eccentric ball valve | |
| CN217129974U (en) | Sealing dustproof structure for hydraulic cylinder | |
| CN214999388U (en) | 221 explosion-proof type mechanical seal | |
| CN220551501U (en) | Mechanical sealing element for preventing rotation of dynamic and static rings and pump using mechanical sealing element | |
| CN215110514U (en) | Dynamic hybrid shaft end mechanical sealing structure | |
| CN213541103U (en) | Sealing mechanism for lower bearing device of main shaft of pulverizer | |
| CN2285395Y (en) | Mechanical sealing device | |
| CN201034161Y (en) | Energy-saving type sealer | |
| CN212839403U (en) | Integrated mechanical seal with washing structure and good dynamic property | |
| CN206338406U (en) | A kind of axle card drive-type mechanical seal | |
| CN2612824Y (en) | Pump for pressure filter | |
| CN217761425U (en) | Integrated mechanical seal for centrifugal pump | |
| CN219327785U (en) | Thin mechanical oil seal | |
| CN210397701U (en) | High-pressure curved surface annular sealing structure | |
| CN221033958U (en) | Exposed skeleton motor shaft oil seal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240218 Address after: 337000 No. 1-127, zone B, Xiangdong District Industrial Park, Pingxiang City, Jiangxi Province Patentee after: PINGXIANG PUTIAN HI-TECH INDUSTRIAL Co.,Ltd. Country or region after: China Address before: 116000 2-7-1, No.19, Mingyang street, Zhongshan District, Dalian City, Liaoning Province Patentee before: Xing Zhaojie Country or region before: China |
|
| TR01 | Transfer of patent right |