CN115143106A - Roots blower with special sealing protection for shaft extension end - Google Patents
Roots blower with special sealing protection for shaft extension end Download PDFInfo
- Publication number
- CN115143106A CN115143106A CN202210962673.XA CN202210962673A CN115143106A CN 115143106 A CN115143106 A CN 115143106A CN 202210962673 A CN202210962673 A CN 202210962673A CN 115143106 A CN115143106 A CN 115143106A
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- Prior art keywords
- oil
- seal
- sealing
- shaft
- groove
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- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 79
- 239000003921 oil Substances 0.000 claims description 294
- 239000010687 lubricating oil Substances 0.000 claims description 39
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000001050 lubricating effect Effects 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/126—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/28—Safety arrangements; Monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/028—Means for improving or restricting lubricant flow
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
The invention provides a Roots blower with special sealing protection for a shaft extension end, which comprises an auxiliary oil tank, a driven shaft and a driving shaft, wherein an oil thrower disc is arranged inside a closed cavity inside the auxiliary oil tank, the oil thrower disc is fixedly connected with the driven shaft through bolts, the driven shaft is rotatably connected with a wall plate through a bearing, the overall shape of the oil thrower disc is a disc shape, a plurality of oil splashing sheets are arranged on the outer edge of the oil thrower disc, round holes for preventing stress concentration are arranged at the roots of the oil splashing sheets, the driving shaft penetrates through the inside of the auxiliary oil tank, the shaft extension end of the driving shaft is in sealing connection with the auxiliary oil tank through an oil seal shaft sleeve and a sealing seat, and oil baffle discs are arranged on the inner sides of the oil seal shaft sleeve and the sealing seat. The Roots blower is compact in structure and easy to realize; the lubricating effect on the bearing is good through the unique oil thrower structural design; the influence of the oil splashing impact of the oil thrower disc on the oil seal is solved.
Description
Technical Field
The invention relates to the technical field of Roots blowers, in particular to a Roots blower with special sealing protection for a shaft extension end.
Background
The traditional shaft extension end of the Roots blower is sealed in various ways, such as mechanical sealing, the sealing effect is good, but the cost is too high; if simple oil seal is sealed, because the lubrication of its bearing of the lubricated fan of axle extension end adoption lubricating oil must use the disc to splash oil and realize, the disc mainly assembles in the oil tank, and the roots's fan drives the motion of disc in the rotation, and the disc can splash lubricating oil to the bearing position of roots's fan and lubricate, and simultaneously, the disc splashes oil and can lead to the sealed effect of oil blanket poor, the easy oil leak.
Disclosure of Invention
The invention provides a Roots blower with special sealing protection for a shaft extension end, which is compact in structure and easy to realize, and aims to solve the technical problems that the shaft extension end of the existing Roots blower is sealed by using an oil seal, and a bearing is lubricated by using oil splashed by an oil thrower, so that the oil seal sealing effect is poor and oil leakage is easy to occur due to oil splashed by the oil thrower; the lubricating effect on the bearing is good through the unique oil thrower structural design; the influence of the oil splashing impact of the oil thrower disc on the oil seal is solved.
Therefore, the technical scheme of the invention is that the Roots blower with the special sealing protection of the shaft extension end comprises an auxiliary oil tank, a driven shaft and a driving shaft, wherein an oil thrower disc is arranged in a closed chamber in the auxiliary oil tank and fixedly connected with the driven shaft through a bolt, the driven shaft is rotatably connected with a wallboard through a bearing, the overall shape of the oil thrower disc is in a disc shape, a plurality of oil splashing sheets are arranged on the outer edge of the oil thrower disc, a round hole for preventing stress concentration is formed in the root part of each oil splashing sheet, the driving shaft penetrates through the inside of the auxiliary oil tank, the shaft extension end of the driving shaft is in sealing connection with the auxiliary oil tank through an oil seal shaft sleeve and a sealing seat, oil blocking discs are arranged on the inner sides of the oil seal shaft sleeve and the sealing seat and fixedly connected with the auxiliary oil tank, a lubricating oil collecting groove is arranged on the inner side of the oil blocking discs, an annular oil dripping boss is arranged on the inner side of the lubricating oil collecting groove, and an oil discharge port is further arranged at the lower end of each oil blocking disc;
the right end of the oil seal shaft sleeve is provided with an oil control ring, the top end of the oil control ring is provided with an oil control platform, the left end of the oil control ring and the surface of the outer circle of the oil seal shaft sleeve are provided with a first oil throwing tooth and a second oil throwing tooth, a first sealing groove is arranged inside the oil seal shaft sleeve, a first sealing ring is arranged inside the first sealing groove, the oil seal shaft sleeve is in sealing connection with the shaft extension end of the driving shaft through the first sealing ring, the left end of the oil seal shaft sleeve is provided with a screw hole, a screw is arranged inside the screw hole, and the oil seal shaft sleeve is fixedly connected with the shaft extension end of the driving shaft through the screw;
the seal receptacle is installed in the outside of oil blanket axle sleeve, the inside of seal receptacle is equipped with first oil groove, second oil groove and third oil groove, the lower extreme of first oil groove is equipped with first oil drain port, the lower extreme of second oil groove is equipped with second oil discharge port, the lower extreme of third oil groove is equipped with oil leak warning mouth, oil leak warning mouth is used for installing oil leak attention device, the excircle surface of seal receptacle is equipped with the second seal groove, the internally mounted of second seal groove has the second sealing washer, the seal receptacle passes through second sealing washer and bellytank sealing connection, the inside of the left end of seal receptacle is equipped with the oil blanket mounting groove, the internally mounted of oil blanket mounting groove has the oil blanket.
Preferably, the bending height of the oil splashing sheet is 10 +/-0.5 mm.
Preferably, the bending groove width of the oil splashing sheet is 2 +/-0.5 mm.
Preferably, the diameter of the circular hole is 5 ± 0.5mm.
Preferably, the top end of the oil dripping annular boss is conical in shape.
Preferably, the cross-sectional shape of the oil drain port is an arc.
Preferably, the first oil slinger and the second oil slinger are the same in shape, the cross section of the first oil slinger is triangular, and oil guide grooves are formed in two sides of the first oil slinger.
Preferably, the oil leakage warning indicator is mounted on the lower portion of the sealing seat in the vertical direction, the connecting portion of the oil leakage warning indicator is made of steel, and the rest of the oil leakage warning indicator is made of transparent glass.
Preferably, the first sealing ring and the second sealing ring are O-shaped sealing rings.
The invention has the beneficial effects that when the oil slinger on the driven shaft rotates anticlockwise, the oil splashing sheet of the oil slinger splashes most of the splashed lubricating oil onto the bearing to lubricate the bearing, a small part of the lubricating oil can splash into a sealing structure consisting of the oil seal shaft sleeve and the sealing seat at the shaft extension end of the driving shaft, the oil baffle disc plays a first oil baffle role, and the lubricating oil realizes the backflow of part of the lubricating oil through the lubricating oil receiving groove and the oil dripping annular boss. The oil blocking ring of the oil seal shaft sleeve plays a role in blocking oil for the second time, and the oil blocking ring of the oil seal shaft sleeve can continuously block the remaining lubricating oil from entering the sealing structure. But still have a small amount of lubricating oil and oil gas entering this seal structure, when a small amount of lubricating oil got into seal structure, the first oil slinger tooth on the oil blanket axle sleeve can force lubricating oil and oil gas to flow back to the bellytank through the bellytank oil return opening after the first oil drain port of seal receptacle through the oil drain port of bellytank and oil baffle disc again, and the second oil slinger tooth on the oil blanket axle sleeve forces lubricating oil and oil gas to flow back to the bellytank through the bellytank oil return opening after the second oil drain port of seal receptacle through the oil drain port of bellytank and oil baffle disc with the same reason. Through twice backflow, the amount of lubricating oil which leaks outwards is already small, if the lubricating oil leaks, the lubricating oil can enter the oil leakage warning indicator, and the oil leakage warning indicator can judge whether the sealing backflow structure fails or not. The invention has compact structure and easy realization; the lubricating effect on the bearing is good through the unique oil thrower structural design; the influence of the oil splashing impact of the oil thrower disc on the oil seal is solved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the construction of the shaft extension of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at I;
FIG. 4 is a schematic illustration of a sump structure;
FIG. 5 is an enlarged partial view of the oil splash tab, stress-resistant circular hole of the oil slinger;
FIG. 6 is a cross-sectional view of the windage tray;
FIG. 7 is a left side view of the windage tray;
FIG. 8 is a cross-sectional view of the oil seal bushing;
fig. 9 is a sectional view of the oil seal holder.
The symbols in the drawings illustrate that:
1. an oil thrower disc; 101. an oil splashing sheet; 102. a circular hole; 2. an auxiliary oil tank; 201. an oil return port of the auxiliary oil tank; 3. a bearing; 4. a driven shaft; 5. an oil baffle disc; 501. a lubricating oil receiving groove; 502. oil dripping annular boss; 503. an oil discharge port; 6. an oil seal shaft sleeve; 601. an oil control ring; 602. a first oil slinger tooth; 603. a second oil slinger tooth; 604. a first seal groove; 605. screw holes; 7. a sealing seat; 701. a first oil drain port; 702. a second oil discharge port; 703. an oil leakage warning port; 704. a second seal groove; 705. an oil seal mounting groove; 8. a screw; 9. a drive shaft; 10. a first seal ring; 11. an oil leakage alarm; 12. a second seal ring; 13. and (7) oil sealing.
Detailed Description
The present invention will be further described with reference to the following examples.
Fig. 1 to 9 show an embodiment of a roots blower with a special sealing protection for a shaft extension end according to the present invention, which includes an auxiliary oil tank 2, a driven shaft 4 and a driving shaft 9, wherein an oil slinger 1 is disposed inside a closed chamber inside the auxiliary oil tank 2, the oil slinger 1 is fixedly connected with the driven shaft 4 through a bolt, the driven shaft 4 is rotatably connected with a wall plate through a bearing 3, the oil slinger 1 is disc-shaped as a whole, the rotation direction of the oil slinger 1 is counterclockwise, a plurality of oil splashing sheets 101 are disposed on the outer edge of the oil slinger 1, a round hole 102 for preventing stress concentration is disposed at the root of the oil splashing sheet 101, the diameter of the round hole 102 is 5 ± 0.5mm, the bending height of the oil splashing sheet 101 is 10 ± 0.5mm, the bending groove width of the oil splashing sheet 101 is 2 ± 0.5mm, and the bending design of the oil splashing sheet 101 is beneficial to splashing lubricating oil to the bearing side and lubrication of the bearing.
The driving shaft 9 runs through the inside of the auxiliary oil tank 2, the shaft extension end of the driving shaft 9 passes through the oil seal shaft sleeve 6 and the seal receptacle 7 and is connected with the auxiliary oil tank 2 in a sealing manner, the inner sides of the oil seal shaft sleeve 6 and the seal receptacle 7 are provided with the oil baffle disc 5, the oil baffle disc 5 is fixedly connected with the auxiliary oil tank 2, the inner side of the oil baffle disc 5 is provided with the lubricating oil receiving groove 501, the inner side of the lubricating oil receiving groove 501 is provided with an oil dripping annular boss 502, the top end of the oil dripping annular boss 502 is in a conical shape, the lower end of the oil baffle disc 5 is further provided with an oil outlet 503, the cross-sectional shape of the oil outlet 503 is in an arc shape, the oil baffle disc 5 plays a first oil baffle role, the lubricating oil splashed on the oil baffle disc passes through the lubricating oil receiving groove 501, and the conical oil dripping annular boss 502 realizes the backflow of partial lubricating oil. The conical oil dripping annular boss structure is favorable for lubricating oil backflow.
An oil control ring 601 is arranged at the right end of the oil seal shaft sleeve 6, an oil control platform is arranged at the top end of the oil control ring 601, a first oil slinger 602 and a second oil slinger 603 are arranged at the left end of the oil control ring 601 and located on the outer circle surface of the oil seal shaft sleeve 6, the first oil slinger 602 and the second oil slinger 603 are identical in shape, the cross section of the first oil slinger 602 is triangular, oil guide grooves are formed in two sides of the first oil slinger 602, a first sealing groove 604 is formed in the oil seal shaft sleeve 6, a first sealing ring 10 is installed in the first sealing groove 604, the first sealing ring 10 is an O-shaped sealing ring, the oil seal shaft sleeve 6 is in sealing connection with the shaft extension end of the driving shaft 9 through the first sealing ring 10, a screw hole 605 is arranged at the left end of the oil seal shaft sleeve 6, a screw 8 is arranged in the screw hole 605, and the oil seal shaft sleeve 6 is fixedly connected with the shaft extension end of the driving shaft 9 through the screw 8.
The seal receptacle 7 is installed in the outside of oil blanket axle sleeve 6, the inside of seal receptacle 7 is equipped with first oil groove, second oil groove and third oil groove, the lower extreme of first oil groove is equipped with first oil drain hole 701, the lower extreme of second oil groove is equipped with second oil discharge hole 702, the lower extreme of third oil groove is equipped with oil leak warning mouth 703, oil leak warning mouth 703 is used for installing oil leak attention device 11, oil leak attention device 11 is installed in the lower part of the vertical direction of seal receptacle 7, a warning for the oil leak, oil leak attention device 11's connecting portion is the steel, the rest is clear glass, do benefit to the observation.
The outer circle surface of seal receptacle 7 is equipped with second seal groove 704, and the internally mounted of second seal groove 704 has second sealing washer 12, and second sealing washer 12 is O type sealing washer, and seal receptacle 7 passes through second sealing washer 12 and bellytank 2 sealing connection, and the inside of the left end of seal receptacle 7 is equipped with oil blanket mounting groove 705, and the internally mounted of oil blanket mounting groove 705 has oil blanket 13, and the oil blanket inner circle of oil blanket 13 and the cooperation of oil blanket axle sleeve 6 play the main seal effect.
When the oil slinger 1 on the driven shaft 3 rotates anticlockwise, most of splashed lubricating oil is splashed onto the bearing 3 by the oil splashing sheet 101 of the oil slinger 1, lubrication of the bearing 3 is realized, a small part of lubricating oil can be splashed into a sealing structure formed by the oil seal shaft sleeve 6 and the sealing seat 7 at the shaft extension end of the driving shaft 9, at the moment, the oil baffle disc 5 plays a role of first oil baffle, and the lubricating oil realizes backflow of part of lubricating oil through the lubricating oil receiving groove 501 and the oil dripping annular boss 502. The oil control ring 601 of the oil seal shaft sleeve 6 plays a second oil control role, and the oil control ring 601 of the oil seal shaft sleeve 6 can continuously prevent the rest lubricating oil from entering the sealing structure. But a small amount of lubricating oil and oil gas still enter the sealing structure, when a small amount of lubricating oil enters the sealing structure, the first oil slinger tooth 602 on the oil seal shaft sleeve 6 forces the lubricating oil and the oil gas to flow back to the auxiliary oil tank 2 through the first oil discharge port 701 of the sealing seat 7 and then through the auxiliary oil tank oil return port 201 and the oil discharge port 503 of the oil baffle disc 5, and similarly, the second oil slinger tooth 603 on the oil seal shaft sleeve 6 forces the lubricating oil and the oil gas to flow back to the auxiliary oil tank 2 through the second oil discharge port 702 of the sealing seat 7 and then through the auxiliary oil tank oil return port 201 and the oil discharge port 503 of the oil baffle disc 5. After two times of backflow, the amount of lubricating oil leaking outwards is already small, if the lubricating oil leaks, the lubricating oil can enter the oil leakage warning indicator 11, and the oil leakage warning indicator 11 can judge whether the sealing backflow structure fails or not. The outermost layer of seal close to the atmosphere is an oil seal 13 which plays a role of main seal, and the invention solves the problem of influence of oil splashing of the oil thrower on the main seal.
However, the above description is only exemplary of the present invention, and the scope of the present invention should not be limited thereby, and the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should be covered by the claims of the present invention.
Claims (9)
1. A Roots blower with special sealing protection for a shaft extension end is characterized by comprising an auxiliary oil tank, a driven shaft and a driving shaft, wherein an oil thrower disc is arranged inside a closed cavity inside the auxiliary oil tank, the oil thrower disc is fixedly connected with the driven shaft through a bolt, the driven shaft is rotatably connected with a wallboard through a bearing, the overall shape of the oil thrower disc is a disc shape, a plurality of oil splashing sheets are arranged on the outer edge of the oil thrower disc, a round hole for preventing stress concentration is formed in the root of each oil splashing sheet, the driving shaft penetrates through the inside of the auxiliary oil tank, the shaft extension end of the driving shaft is hermetically connected with the auxiliary oil tank through an oil seal shaft sleeve and a seal seat, oil baffle discs are arranged on the inner sides of the oil seal shaft sleeve and the seal seat, the oil baffle discs are fixedly connected with the auxiliary oil tank, a lubricating oil receiving groove is arranged on the inner side of the oil receiving groove, and an oil dripping annular boss is arranged on the lower end of each oil baffle disc;
the oil seal structure comprises an oil seal shaft sleeve, an oil baffle ring, an oil baffle table, a first sealing groove, a first sealing ring, a second sealing ring, a screw hole and an oil seal shaft sleeve, wherein the right end of the oil seal shaft sleeve is provided with the oil baffle ring, the top end of the oil baffle ring is provided with the oil baffle table, the left end of the oil baffle ring is provided with a first oil throwing tooth and a second oil throwing tooth which are positioned on the outer circle surface of the oil seal shaft sleeve, the inside of the oil seal shaft sleeve is provided with the first sealing groove, the inside of the first sealing groove is provided with the first sealing ring, the oil seal shaft sleeve is in sealing connection with the shaft extension end of a driving shaft through the first sealing ring, the left end of the oil seal shaft sleeve is provided with the screw hole, the inside of the screw hole is provided with the screw, and the oil seal shaft sleeve is fixedly connected with the shaft extension end of the driving shaft through the screw;
the sealing seat is arranged at the outer side of the oil seal shaft sleeve, a first oil groove, a second oil groove and a third oil groove are arranged inside the sealing seat, a first oil discharge port is arranged at the lower end of the first oil groove, a second oil discharge port is arranged at the lower end of the second oil groove, an oil leakage warning port is arranged at the lower end of the third oil groove, the oil leak warning port is used for installing an oil leak warning indicator, a second sealing groove is formed in the outer circle surface of the sealing seat, a second sealing ring is arranged inside the second sealing groove, the sealing seat is connected with the auxiliary oil tank in a sealing mode through the second sealing ring, an oil seal mounting groove is formed in the left end of the sealing seat, and an oil seal is arranged inside the oil seal mounting groove.
2. The roots blower with special sealing protection at the shaft extension end as claimed in claim 1, wherein the folded height of the oil splash sheet is 10 ± 0.5mm.
3. The roots blower with the shaft end special sealing protection as claimed in claim 2, wherein the width of the folded slot of the oil splashing sheet is 2 ± 0.5mm.
4. The roots blower with special seal protection at the shaft extension end as claimed in claim 1, wherein the diameter of the circular hole is 5 ± 0.5mm.
5. The roots blower with special seal protection at the shaft extension end as claimed in claim 1, wherein the top end of the oil dripping annular boss is conical.
6. The roots blower with shaft extension end special seal protection as claimed in claim 1, wherein the cross-sectional shape of the oil discharge port is arc.
7. The roots blower with special sealing protection at the shaft extension end as claimed in claim 1, wherein the first oil slinger teeth and the second oil slinger teeth are identical in shape, the cross-sectional shape of the first oil slinger teeth is triangular, and oil guide grooves are formed on two sides of the first oil slinger teeth.
8. The roots blower with special sealing protection at the shaft extension end as claimed in claim 1, wherein the oil leakage warning indicator is mounted at the lower part of the sealing seat in the vertical direction, the connecting part of the oil leakage warning indicator is made of steel, and the rest part is made of transparent glass.
9. The roots blower with special seal protection at the shaft extension end as claimed in claim 1, wherein the first and second seal rings are O-rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210962673.XA CN115143106A (en) | 2022-08-11 | 2022-08-11 | Roots blower with special sealing protection for shaft extension end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210962673.XA CN115143106A (en) | 2022-08-11 | 2022-08-11 | Roots blower with special sealing protection for shaft extension end |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115143106A true CN115143106A (en) | 2022-10-04 |
Family
ID=83415540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210962673.XA Pending CN115143106A (en) | 2022-08-11 | 2022-08-11 | Roots blower with special sealing protection for shaft extension end |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115143106A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1570266A (en) * | 1977-06-04 | 1980-06-25 | Leybold Heraeus Gmbh & Co Kg | Roots blowers |
| JP2001073978A (en) * | 1999-06-29 | 2001-03-21 | Kobe Steel Ltd | Oil-cooled type screw compressor |
| CN201358920Y (en) * | 2009-01-21 | 2009-12-09 | 长沙埃尔压缩机有限责任公司 | Roots blower |
| CN105756940A (en) * | 2016-03-31 | 2016-07-13 | 海门市海真真空设备有限公司 | End cover sealing device of vacuum pump |
| CN106382223A (en) * | 2016-12-01 | 2017-02-08 | 浙江创为真空设备有限公司 | Double screw vacuum pump |
-
2022
- 2022-08-11 CN CN202210962673.XA patent/CN115143106A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1570266A (en) * | 1977-06-04 | 1980-06-25 | Leybold Heraeus Gmbh & Co Kg | Roots blowers |
| JP2001073978A (en) * | 1999-06-29 | 2001-03-21 | Kobe Steel Ltd | Oil-cooled type screw compressor |
| CN201358920Y (en) * | 2009-01-21 | 2009-12-09 | 长沙埃尔压缩机有限责任公司 | Roots blower |
| CN105756940A (en) * | 2016-03-31 | 2016-07-13 | 海门市海真真空设备有限公司 | End cover sealing device of vacuum pump |
| CN106382223A (en) * | 2016-12-01 | 2017-02-08 | 浙江创为真空设备有限公司 | Double screw vacuum pump |
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