CN221120409U - Air isolation structure of centrifugal pump mechanical seal - Google Patents
Air isolation structure of centrifugal pump mechanical seal Download PDFInfo
- Publication number
- CN221120409U CN221120409U CN202323111160.7U CN202323111160U CN221120409U CN 221120409 U CN221120409 U CN 221120409U CN 202323111160 U CN202323111160 U CN 202323111160U CN 221120409 U CN221120409 U CN 221120409U
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- CN
- China
- Prior art keywords
- dry gas
- centrifugal pump
- sealing
- cover body
- isolation structure
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Links
- 238000002955 isolation Methods 0.000 title claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 85
- 230000002093 peripheral effect Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000012530 fluid Substances 0.000 description 7
- 238000011010 flushing procedure Methods 0.000 description 7
- 238000001035 drying Methods 0.000 description 5
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses an air isolation structure of a centrifugal pump seal, which comprises a sealing cover body arranged at a centrifugal pump seal area, wherein a sealing space is formed between the sealing cover body and the centrifugal pump seal area, a dry gas circulator is externally connected to the sealing cover body, and dry gas circulates between the dry gas circulator and the sealing space.
Description
Technical Field
The utility model belongs to the technical field of centrifugal pumps, and particularly relates to an air isolation structure of a centrifugal pump machine seal.
Background
The centrifugal pump is operated by utilizing the rotation of the impeller to make water generate centrifugal motion, before the centrifugal pump is started, the pump shell and the water suction pipe are required to be filled with water, then the motor is started, the pump shaft drives the impeller and the water to do high-speed rotation motion, the water generates centrifugal motion and is thrown to the outer edge of the impeller, and flows into the water pressing pipeline of the water pump through the flow channel of the volute pump shell, and the basic structure of the centrifugal pump is composed of eight parts, namely: impeller, pump body, pump cover, water retaining ring, pump shaft, bearing, sealing ring, stuffing box and axial force balancing device.
The sealing flushing fluid at the sealing position of the centrifugal pump is easy to crystallize when meeting water, most of the sealing positions of the existing centrifugal pump are exposed in the air, water in the air is easy to crystallize when contacting with the sealing flushing fluid, and the sealing of the centrifugal pump is invalid.
Disclosure of utility model
The utility model aims to provide an air isolation structure of a centrifugal pump mechanical seal, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an air isolation structure of centrifugal pump machine seal, includes the sealed cowling body of installing in centrifugal pump machine seal region department, the sealed cowling body with form sealed space between the centrifugal pump machine seal region, the external dry gas circulator that has on the sealed cowling body, circulation has dry gas between dry gas circulator and this sealed space.
Preferably, the sealing cover body is provided with a dry gas inlet port and a dry gas outlet port, and the dry gas inlet port and the dry gas outlet port are respectively communicated with the output end and the input end of the dry gas circulating machine through circulating pipes.
Preferably, the dry gas inlet port and the dry gas outlet port are both connected with the sealed cover body through a sealing collar, and the dry gas inlet port and the dry gas outlet port are both fixed on the sealed cover body through locking nuts.
Preferably, the sealing clamping grooves are formed in the two ends of the sealing cover body, and sealing rings are arranged in the sealing clamping grooves.
Preferably, the periphery sides at two ends of the sealing cover body are provided with connecting lugs, the connecting lugs are provided with bolt holes, and the bolt holes are matched with sealing bolts connected at the sealing area of the centrifugal pump.
Compared with the prior art, the utility model has the beneficial effects that:
According to the utility model, the sealing cover body is arranged at the centrifugal pump sealing area, so that a sealing space is formed at the centrifugal pump sealing area, air is prevented from entering, the drying air circulation machine is connected with the centrifugal pump sealing area in the sealing cover body in a circulating way through the drying air inlet port and the drying air outlet port, the drying air is prevented from entering the centrifugal pump sealing area, the sealing flushing fluid at the centrifugal pump sealing area is prevented from being in contact with moisture in the air to generate crystallization, and meanwhile, the drying air circulates in a circulating way, so that the humidity at the centrifugal pump sealing area can be further reduced, the dryness at the centrifugal pump sealing area is kept, and the sealing flushing fluid at the centrifugal pump sealing area is ensured to be normal and effective.
Drawings
FIG. 1 is a schematic view of a partially cut-away structure of the present utility model;
FIG. 2 is a schematic perspective view of a seal housing according to the present utility model;
FIG. 3 is a schematic perspective view of a seal housing of the present utility model;
FIG. 4 is a schematic cross-sectional view of the seal housing of the present utility model.
In the figure: 1. a centrifugal pump mechanical seal area; 2. sealing the cover body; 3. a dry gas inlet port; 4. a dry gas outlet port; 5. a sealing collar; 6. a lock nut; 7. sealing the clamping groove; 8. a seal ring; 9. a connecting lug; 10. bolt holes.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-4, the air isolation structure of a centrifugal pump seal provided by the utility model comprises a sealing cover body 2 arranged at a centrifugal pump seal area 1, a sealing space is formed between the sealing cover body 2 and the centrifugal pump seal area 1, a dry gas circulating machine is externally connected to the sealing cover body 2, dry gas circulates between the dry gas circulating machine and the sealing space, a dry gas inlet port 3 and a dry gas outlet port 4 are arranged on the sealing cover body 2, the dry gas inlet port 3 and the dry gas outlet port 4 are respectively communicated with an output end and an input end of the dry gas circulating machine through circulating pipes, the dry gas inlet port 3 and the dry gas outlet port 4 are both connected with the sealing cover body 2 through sealing lantern rings 5, the dry gas inlet port 3 and the dry gas outlet port 4 are both fixed on the sealing cover body 2 through locking nuts 6, sealing clamping grooves 7 are formed at two ends of the sealing cover body 2, sealing clamping grooves 7 are internally provided with sealing rings 8, connecting lugs 9 are respectively arranged at the outer peripheral sides of two ends of the sealing cover body 2, bolt holes 10 are formed in the connecting lugs 9, and bolts 10 are connected with the centrifugal pump seal area 1.
According to the utility model, the sealing cover body 2 is arranged at the centrifugal pump sealing area 1, so that a sealing space is formed at the centrifugal pump sealing area 1, air is prevented from entering, a dry air circulating machine is externally connected with the dry air inlet port 3 and the dry air outlet port 4, dry air is circulated between the dry air circulating machine and the centrifugal pump sealing area 1 in the sealing cover body 2, the air is prevented from entering the centrifugal pump sealing area 1, the phenomenon that sealing flushing fluid at the centrifugal pump sealing area 1 contacts with moisture in the air to generate crystallization is avoided, meanwhile, the dry air circulates circularly, the humidity at the centrifugal pump sealing area 1 can be further reduced, the dryness at the centrifugal pump sealing area 1 is kept, and the sealing flushing fluid at the centrifugal pump sealing area 1 is ensured to be normal and effective.
In summary, the use method of the air isolation structure of the centrifugal pump mechanical seal provided in this embodiment includes: when the centrifugal pump is in use, the sealing cover body 2 is arranged at the centrifugal pump sealing area 1 through the sealing bolt, the sealing ring 8 is arranged in the sealing clamping groove 7, so that the connection between the sealing cover body 2 and the centrifugal pump sealing area 1 is sealed, then the dry gas inlet port 3 and the dry gas outlet port 4 are respectively communicated with the output end and the input end of the dry gas circulator through the circulating pipes, and when the centrifugal pump is in operation, the dry gas circulator starts circulating dry gas into the sealing cover body 2, so that air is prevented from entering the sealing cover body 2, and further, the phenomenon that sealing flushing fluid at the centrifugal pump sealing area 1 is in contact with water in the air to generate crystallization is avoided.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides an air isolation structure of centrifugal pump machine seal, its characterized in that, including installing sealed cowling body (2) in centrifugal pump machine seal region (1) department, sealed cowling body (2) with form sealed space between centrifugal pump machine seal region (1), external dry gas circulator has on sealed cowling body (2), circulation has dry gas between dry gas circulator and this sealed space.
2. The air isolation structure of a centrifugal pump machine seal according to claim 1, wherein: the sealing cover body (2) is provided with a dry gas inlet port (3) and a dry gas outlet port (4), and the dry gas inlet port (3) and the dry gas outlet port (4) are respectively communicated with the output end and the input end of the dry gas circulator through circulating pipes.
3. An air isolation structure of a centrifugal pump machine seal according to claim 2, wherein: the dry gas inlet port (3) and the dry gas outlet port (4) are connected with the sealed cover body (2) through the sealing lantern ring (5), and the dry gas inlet port (3) and the dry gas outlet port (4) are fixed on the sealed cover body (2) through the locking nut (6).
4. The air isolation structure of a centrifugal pump machine seal according to claim 1, wherein: the sealing cover is characterized in that sealing clamping grooves (7) are formed in two ends of the sealing cover body (2), and sealing rings (8) are arranged in the sealing clamping grooves (7).
5. The air isolation structure of a centrifugal pump machine seal according to claim 1, wherein: the sealing cover is characterized in that connecting lugs (9) are arranged on the outer peripheral sides of two ends of the sealing cover body (2), bolt holes (10) are formed in the connecting lugs (9), and the bolt holes (10) are matched with sealing bolts connected to the centrifugal pump sealing area (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323111160.7U CN221120409U (en) | 2023-11-17 | 2023-11-17 | Air isolation structure of centrifugal pump mechanical seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323111160.7U CN221120409U (en) | 2023-11-17 | 2023-11-17 | Air isolation structure of centrifugal pump mechanical seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221120409U true CN221120409U (en) | 2024-06-11 |
Family
ID=91362998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323111160.7U Active CN221120409U (en) | 2023-11-17 | 2023-11-17 | Air isolation structure of centrifugal pump mechanical seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221120409U (en) |
-
2023
- 2023-11-17 CN CN202323111160.7U patent/CN221120409U/en active Active
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