CN221074633U - Roots vapor compressor shaft seal - Google Patents
Roots vapor compressor shaft seal Download PDFInfo
- Publication number
- CN221074633U CN221074633U CN202322759905.4U CN202322759905U CN221074633U CN 221074633 U CN221074633 U CN 221074633U CN 202322759905 U CN202322759905 U CN 202322759905U CN 221074633 U CN221074633 U CN 221074633U
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- CN
- China
- Prior art keywords
- packing
- seal
- shaft
- roots
- sealing
- 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.)
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Links
- 238000012856 packing Methods 0.000 claims abstract description 92
- 238000007789 sealing Methods 0.000 claims abstract description 34
- 230000006835 compression Effects 0.000 claims abstract description 8
- 238000007906 compression Methods 0.000 claims abstract description 8
- 239000003921 oil Substances 0.000 claims description 29
- -1 polytetrafluoroethylene Polymers 0.000 claims description 13
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 10
- 239000010705 motor oil Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 9
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model relates to the technical field of shaft seals of vapor compressors, in particular to a shaft seal of a Roots vapor compressor. The technical scheme includes that the Roots compressor shaft further comprises a shaft sleeve, a packing sealing packing, a packing pressing ring and a packing box, wherein a plurality of grooves are formed in the shaft sleeve, and the packing sealing packing is located in the grooves. The sealing is ensured by the tight contact of the packing compression ring and the shaft sleeve, and the multiple grooves form multiple pressure equalization when the sealing leaks, and the penetrating leakage is blocked at multiple levels, so that the sealing effect can be achieved by only a few packing, the shaft extension of the Roots compressor is greatly shortened, the shaft extension of the Roots compressor is shortened, the excellent sealing effect can be achieved by a few packing, the penetrating leakage is prevented, the service life of the shaft seal is prolonged, the volume is reduced, the weight is reduced, the cost is reduced, the efficiency is improved, and the maintainability is improved.
Description
Technical Field
The utility model relates to the technical field of shaft seals of vapor compressors, in particular to a shaft seal of a Roots vapor compressor.
Background
Labyrinth type or double-end mechanical seal for the shaft seal of the conventional Roots vapor compressor has large leakage amount, and the double-end mechanical seal needs water cooling, and has high cost and shaft extension. The packing is commonly used for sealing, and a plurality of circles of packing is arranged, so that the size is large, and the penetrability leakage is easy to cause.
Disclosure of utility model
The utility model aims to solve the problems in the background technology, and provides a Roots vapor compressor shaft seal which is small in size, short in shaft extension and capable of guaranteeing a sealing effect by using fewer packing.
The technical scheme of the utility model is as follows: the shaft seal of the Roots vapor compressor comprises a shaft of the Roots compressor, and further comprises a shaft sleeve, a packing seal packing, a packing pressing ring and a packing box, wherein a plurality of grooves are formed in the shaft sleeve, and the packing seal packing is located in the grooves.
Optionally, the packing sealing packing is arranged in the packing box, the packing pressing ring is positioned at one side of the packing sealing packing, a wave-shaped gasket is arranged at one side of the packing pressing ring, the packing compression ring compresses and fixes the packing sealing packing under the action of the wave-shaped gasket, and the packing sealing packing is compressed and then expands towards the groove to form a tighter seal.
Optionally, a polytetrafluoroethylene framework oil seal is arranged on one side of the stuffing box, and an inner hole of the polytetrafluoroethylene framework oil seal is sleeved on the shaft sleeve to form an oil seal.
Optionally, the packing seal packing and the grooves form sealing and sealing water vapor at the impeller side of the Roots compressor, the polytetrafluoroethylene framework oil seal and the shaft sleeve form an oil seal to seal engine oil in the oil tank, and a small amount of water vapor and engine oil leaked from the packing seal packing and the shaft sleeve are discharged to the outside of the compressor through a discharge hole on the packing compression ring.
Compared with the prior art, the utility model has the following beneficial technical effects:
According to the utility model, the shaft sleeve is provided with the plurality of grooves, the packing compression ring is tightly contacted with the shaft sleeve to ensure sealing, and when the sealing leaks, the plurality of grooves form multiple pressure equalization and multi-level blocking of penetrable leakage, so that the sealing effect can be achieved only by a small number of packing, and the shaft extension of the Roots compressor is greatly shortened;
Furthermore, the packing is further pressed by the waveform gasket to ensure the packing tightness, the parts to be lubricated in the transmission parts are isolated from the external environment by the framework oil seal pair, so that the lubricating oil is prevented from leaking, the packing is fixed, and the oil-gas shaft seal assembly of the Roots vapor compressor is formed, so that the sealing performance is excellent;
The utility model shortens the shaft extension of the Roots compressor, achieves excellent sealing effect through a few packing, prevents penetration leakage, prolongs the service life of the shaft seal, reduces the volume, lightens the weight, reduces the cost, improves the efficiency and improves the maintainability.
Drawings
Fig. 1 shows a schematic structure of an embodiment of the present utility model.
Reference numerals: 1. roots compressor shaft; 2. a shaft sleeve; 21. a groove; 3. packing is sealed by packing; 4. packing compression rings; 5. a wave washer; 6. a polytetrafluoroethylene skeleton oil seal; 7. stuffing box.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown.
The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model.
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.
Examples
As shown in fig. 1, the shaft seal of the roots vapor compressor provided by the utility model comprises a shaft 1 of the roots vapor compressor, a shaft sleeve 2, a packing 3, a packing pressing ring 4 and a stuffing box 7, wherein a plurality of grooves 21 are arranged on the shaft sleeve 2, the packing 3 is positioned in the grooves 21, the packing 3 is arranged in the stuffing box 7, the packing pressing ring 4 is positioned at one side of the packing 3, a waveform gasket 5 is arranged at one side of the packing pressing ring 4, the packing pressing ring 4 compresses and fixes the packing 3 under the action of the waveform gasket 5, the packing 3 is compressed and then expands to the grooves 21 to form a tighter seal, uniform pressing of the packing pressing ring 4 is realized through elastic deformation of the waveform gasket 5, the corrugated gasket 5 can adapt to the unevenness of the surface of the packing compression ring 4, the sealing effect is ensured, the packing sealing packing 3 is compressed and then expands towards the groove 21 to form tighter sealing, the packing sealing packing 3 adopts an oil immersed tetrafluoropacking, the oil immersed tetrafluoropacking improves the sealing performance, improves the corrosion resistance, enhances the wear resistance and stabilizes the size, thereby prolonging the service life of the shaft seal, and when the sealing leakage occurs, the grooves 21 form multiple pressure equalizing, and the penetrating leakage is blocked in a multi-layer manner, so that the sealing effect can be achieved only by a small number of packing sealing packing 3, the shaft elongation of the Roots compressor is greatly shortened, the volume is reduced, the weight is reduced, the cost is reduced, the efficiency is improved, and the maintainability is improved.
As shown in fig. 1, a polytetrafluoroethylene framework oil seal 6 is arranged on one side of a stuffing box 7, an inner hole of the polytetrafluoroethylene framework oil seal 6 is sleeved on a shaft sleeve 2 to form an oil seal, a stuffing seal packing 3 and a plurality of grooves 21 form water vapor for sealing the impeller side of the Roots compressor, the polytetrafluoroethylene framework oil seal 6 and the shaft sleeve 2 form oil in an oil seal sealing oil tank, and a small amount of water vapor or engine oil leaked from the polytetrafluoroethylene framework oil seal 6 and the shaft sleeve is discharged to the outside of the compressor through a discharge hole on a packing compression ring 4.
Working principle: packing clamping ring 4 compresses fixed packing sealing packing 3 under wave form gasket 5 effect, packing sealing packing 3 is compressed back to slot 21 inflation and forms more inseparable sealedly, and polytetrafluoroethylene skeleton oil blanket 6 hole is overlapped and is pressed on axle sleeve 2, forms the oil blanket, and packing sealing packing 3 forms the vapor that seals the roots compressor impeller side with a plurality of slots 21, and polytetrafluoroethylene skeleton oil blanket 6 forms the engine oil in the oil blanket sealed oil tank with axle sleeve 2, and the discharge port on packing clamping ring 4 is passed through to the discharge port of both leakage of vapor or engine oil to the outside of compressor.
Claims (4)
1. The utility model provides a roots vapor compressor bearing seal, includes roots compressor shaft (1), its characterized in that: the packing box is characterized by further comprising a shaft sleeve (2), a packing seal packing (3), a packing pressing ring (4) and a packing box (7), wherein a plurality of grooves (21) are formed in the shaft sleeve (2), and the packing seal packing (3) is located in the grooves (21).
2. The Roots vapor compressor shaft seal according to claim 1, wherein the packing (3) is installed in a packing box (7), the packing pressing ring (4) is located at one side of the packing (3), a waveform gasket (5) is arranged at one side of the packing pressing ring (4), the packing pressing ring (4) compresses and fixes the packing (3) under the action of the waveform gasket (5), and the packing (3) expands to a groove (21) to form a tighter seal after being compressed.
3. The Roots vapor compressor shaft seal according to claim 1, wherein a polytetrafluoroethylene framework oil seal (6) is arranged on one side of the stuffing box (7), and an inner hole of the polytetrafluoroethylene framework oil seal (6) is sleeved on the shaft sleeve (2) to form an oil seal.
4. A roots vapor compressor shaft seal according to claim 3 characterized in that the packing seal packing (3) and the grooves (21) form a seal for sealing water vapor on the impeller side of the roots compressor, the polytetrafluoroethylene framework oil seal (6) and the shaft sleeve (2) form an oil seal for sealing engine oil in an oil tank, and a small amount of water vapor and engine oil leaked from the packing seal packing (3) and the shaft sleeve are discharged outside the compressor through a discharge hole on the packing compression ring (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322759905.4U CN221074633U (en) | 2023-10-13 | 2023-10-13 | Roots vapor compressor shaft seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322759905.4U CN221074633U (en) | 2023-10-13 | 2023-10-13 | Roots vapor compressor shaft seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221074633U true CN221074633U (en) | 2024-06-04 |
Family
ID=91257826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322759905.4U Active CN221074633U (en) | 2023-10-13 | 2023-10-13 | Roots vapor compressor shaft seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221074633U (en) |
-
2023
- 2023-10-13 CN CN202322759905.4U patent/CN221074633U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |