CN219159188U - Roots blower with conical positioning gear - Google Patents
Roots blower with conical positioning gear Download PDFInfo
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- CN219159188U CN219159188U CN202320167656.7U CN202320167656U CN219159188U CN 219159188 U CN219159188 U CN 219159188U CN 202320167656 U CN202320167656 U CN 202320167656U CN 219159188 U CN219159188 U CN 219159188U
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Abstract
The utility model provides a gear conical positioning Roots blower, which comprises a shell, a driving impeller assembly and a driven impeller assembly, wherein the driving impeller assembly comprises a driving shaft and an impeller, round-head flat key grooves are formed in the driving shaft and the impeller, the impeller is fixedly connected with the driving shaft through a first round-head flat key, a driving gear is installed at one end of the driving shaft, the position of the driving gear installed on the driving shaft is designed to be of a conical structure and is provided with the round-head flat key grooves, and an inner hole matched with the driving gear and the driving shaft is designed to be of a conical structure and is provided with the gear grooves. The driving shaft and the driving gear are in taper fit and ensure concentric self-locking, the driven shaft and the driven gear hub are in taper fit and ensure concentric self-locking, the outer circle of the driven gear hub and the inner hole of the driven gear are in taper fit and ensure concentric self-locking, and the driven gear hub and the driven gear are fixed in a positioning manner through the conical pin with internal threads, so that the problem of gear positioning when the Roots blower encounters a load abrupt change working condition is solved, the phase movement of the gears is avoided, and the impeller of the Roots blower is effectively protected.
Description
Technical Field
The utility model relates to the technical field of Roots blowers, in particular to a Roots blower with a bevel positioning gear.
Background
The gears of the traditional Roots blower are positioned in various forms, some gears are thermally arranged on the shaft, and the gears are fastened and positioned by the interference with the shaft and the pressing force of the outer expansion sleeve; the fastening and positioning of the gears are realized by the aid of the principles of internal compression and external expansion of the internal expansion sleeve. The positioning modes of the two gears are suitable for most application working conditions, but when the load abrupt change working conditions are met, the two positioning modes easily generate phase movement of the gears, so that the impeller of the Roots blower collides. The patent provides a new solution to the working condition of abrupt load change of the Roots blower, and solves the problem of positioning of gears under the working condition of abrupt load change.
Disclosure of Invention
Aiming at the technical problem that when the traditional Roots blower encounters a load abrupt change working condition, the gear is easy to move in phase, so that the impeller of the Roots blower collides, the utility model provides the Roots blower with the gear positioned in a conical manner, wherein a driving shaft and a driving gear are in conical fit and ensure concentric self-locking, a driven shaft and a driven gear hub are in conical fit and ensure concentric self-locking, the outer circle of the driven gear hub and the inner hole of the driven gear are in conical fit and ensure concentric self-locking, and the driven gear hub and the driven gear are fixed in a positioning manner through an internal thread conical pin, so that the gear positioning problem when the Roots blower encounters the load abrupt change working condition is solved, the phase movement of the gears is avoided, and the impeller of the Roots blower is effectively protected.
The technical scheme includes that the Roots blower comprises a shell, a driving impeller assembly and a driven impeller assembly, wherein the driving impeller assembly and the driven impeller assembly perform constant-speed rotary motion with opposite driving actions through a pair of synchronous gears, an impeller gap is formed between the two impellers, the driving impeller assembly comprises a driving shaft and an impeller, round-head flat key keyways are formed in the driving shaft and the impeller, the impeller is fixedly connected with the driving shaft through first round-head flat keys, a driving gear is installed at one end of the driving shaft, the position of the driving shaft where the driving gear is installed is designed to be of a conical structure and is machined with round-head flat key keyways, an inner hole matched with the driving gear is designed to be of a conical structure and is machined with a gear groove, the driving shaft and the driving gear are in taper fit and ensure concentric self-locking, torque is transmitted between the driving shaft and the driving gear through second round-head flat keys, a stop washer and a round nut are sequentially arranged on the outer side of the driving gear, and the driving gear is fastened and positioned on the driving shaft through the taper and the stop washer and the round nut;
the driven impeller assembly comprises a driven shaft and an impeller, round head flat key grooves are formed in the driven shaft and the impeller, the impeller and the driven shaft are fixedly connected through first round head flat keys, a driven gear hub is installed at one end of the driven shaft, the position of the driven shaft, where the driven gear hub is installed, is designed to be of a conical structure and is machined with the round head flat key grooves, an inner hole matched with the driven shaft is designed to be of a conical structure and is machined with a hub groove, the driven shaft and the driven gear hub are in taper fit and ensure concentric self-locking, torque is transmitted between the driven shaft and the driven gear hub through second round head flat keys, a driven gear is installed outside the driven gear hub, an outer circle of the driven gear hub and an inner hole of the driven gear are designed to be of a conical structure, the outer circle of the driven gear hub and the inner hole of the driven gear are sequentially provided with a stop washer and a round nut, and the driven gear hub is fastened and positioned on the driven shaft by means of the stop washer and the round nut.
Preferably, the driving gear is provided with a driving gear dismounting hole.
Preferably, the driven gear is provided with a driven gear dismounting hole.
Preferably, the driven gear hub and the driven gear are fastened by adopting connecting bolts after the impeller gaps of the driving impeller assembly and the driven impeller assembly are adjusted.
Preferably, the driven gear hub and the driven gear are positioned and fixed by an internally threaded conical pin.
The utility model has the advantages that the driving shaft and the driving gear are matched through taper and ensure concentric self-locking, the torque is transmitted between the driving shaft and the driving gear through the second round head flat key, and the driving gear is fastened and positioned on the driving shaft by means of taper, a stop washer and a round nut; the driven shaft and the driven gear hub are in taper fit and ensure concentric self-locking, the outer circle of the driven gear hub and the inner hole of the driven gear are in taper fit and ensure concentric self-locking, the driven gear hub is fastened and positioned on the driven shaft by means of the taper, the stop washer and the round nut, and the driven gear hub and the driven gear are positioned and fixed by means of the internal thread taper pin, so that the problem of gear positioning when the Roots blower encounters a load abrupt change working condition is solved, phase movement of gears is avoided, and the impeller of the Roots blower is effectively protected.
Drawings
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is a cross-sectional view at A-A in FIG. 1;
fig. 3 is a partial enlarged view of i in fig. 1.
The symbols in the drawings illustrate:
1. a driving shaft; 2. an impeller; 3. a first round-head flat key; 4. a driven shaft; 5. a drive gear; 501. a drive gear removal hole; 6. a second round-head flat key; 7. a driven gear hub; 8. a driven gear; 801. a driven gear dismounting hole; 9. a connecting bolt; 10. a stop washer; 11. a round nut; 12. an internally threaded conical pin.
Detailed Description
The utility model is further described below with reference to examples.
Fig. 1-3 are embodiments of a gear taper positioning Roots blower of the present utility model, which includes a housing, a driving impeller assembly and a driven impeller assembly, the driving impeller assembly and the driven impeller assembly are driven by a pair of synchronous gears to perform opposite constant speed rotation movements, an impeller gap is provided between the two impellers, the driving impeller assembly includes a driving shaft 1 and an impeller 2, round head flat key grooves are provided on the driving shaft 1 and the impeller 2, the impeller 2 is fixedly connected with the driving shaft 1 through a first round head flat key 3, one end of the driving shaft 1 is provided with a driving gear 5, the position of the driving shaft 1 where the driving gear 5 is installed is designed into a taper structure and is processed with round head flat key grooves, an inner hole where the driving gear 5 is matched with the driving shaft 3 is designed into a taper structure and is processed with a gear groove, the driving shaft 1 and the driving gear 5 are matched with taper and ensure concentric self-locking, a stop washer 10 and a round nut 11 are sequentially provided on the outer side of the driving gear 5, the driving gear 5 is fastened and positioned by means of the stop washer 10 and the stop washer 11.
The driven impeller assembly comprises a driven shaft 4 and an impeller 2, round head flat key grooves are formed in the driven shaft 4 and the impeller 2, the impeller 2 is fixedly connected with the driven shaft 4 through a first round head flat key 3, a driven gear hub 7 is installed at one end of the driven shaft 4, the position of the driven gear hub 7 installed on the driven shaft 4 is designed to be of a conical structure and is provided with round head flat key grooves in a machining mode, an inner hole of the driven gear hub 7 and an inner hole of the driven shaft 4 are designed to be of a conical structure and are provided with hub grooves in a machining mode, the driven shaft 4 and the driven gear hub 7 are in taper fit and ensure concentric self-locking, torque is transmitted between the driven shaft 4 and the driven gear hub 7 through a second round head flat key 6, a driven gear 8 is installed outside the driven gear hub 7, an outer circle of the driven gear hub 7 and an inner hole of the driven gear 8 are designed to be of a conical structure, a stop washer 10 and a round nut 11 are sequentially arranged on the outer side of the driven gear hub 7 in a fastening and positioning mode through taper fit and the stop washer 10 and the round nut 11.
In one embodiment, the driving gear 5 is provided with a driving gear dismounting hole 501, and the driving gear dismounting hole 501 can facilitate the mounting and dismounting of the driving gear 5.
In a specific embodiment, the driven gear 8 is provided with a driven gear dismounting hole 801, and the driven gear dismounting hole 801 can facilitate the mounting and dismounting of the driven gear 8.
In a specific embodiment, the driven gear hub 7 and the driven gear 8 are fastened by using a connecting bolt 9 after the impeller clearance between the driving impeller assembly and the driven impeller assembly is adjusted.
In a specific embodiment, the driven gear hub 7 and the driven gear 8 are positioned and fixed through the internal thread taper pin 12, and the internal thread taper pin 12 has the characteristics of convenient installation and disassembly and good self-locking property.
According to the Roots blower with the conical positioning of the gears, the driving shaft 1 and the driving gear 5 are matched through taper and ensure concentric self-locking, torque is transmitted between the driving shaft 1 and the driving gear 5 through the second round-head flat key 6, and the driving gear 5 is fastened and positioned on the driving shaft 1 by means of taper, the stop washer 10 and the round nut 11; the driven shaft 4 and the driven gear hub 7 are in taper fit and ensure concentric self-locking, the outer circle of the driven gear hub 7 and the inner hole of the driven gear 8 are in taper fit and ensure concentric self-locking, the driven gear hub 7 is fastened and positioned on the driven shaft 4 by means of the taper, the stop washer 10 and the round nut 11, and the driven gear hub 7 and the driven gear 8 are positioned and fixed by the internal thread taper pin 12. The problem of gear positioning when the Roots blower encounters a load abrupt change working condition is solved, phase movement of gears is avoided, and the impeller of the Roots blower is effectively protected.
Meanwhile, the driving gear dismounting hole 501 can facilitate the mounting and dismounting of the driving gear 5, the driven gear dismounting hole 801 can facilitate the mounting and dismounting of the driven gear 8, the driven gear hub 7 and the driven gear 8 are fixedly positioned through the internal thread taper pin 12, and the internal thread taper pin 12 has the characteristics of convenient mounting and dismounting and good self-locking property.
However, the foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, so that the substitution of equivalent elements or equivalent variations and modifications within the scope of the utility model are intended to fall within the scope of the claims.
Claims (5)
1. The utility model provides a roots blower of gear toper location, includes casing, initiative impeller subassembly and driven impeller subassembly, initiative impeller subassembly, driven impeller subassembly are through the constant speed rotary motion that a pair of synchro gear drive action is opposite, are equipped with the impeller clearance between two impellers, characterized by, initiative impeller subassembly includes driving shaft and impeller, be equipped with round head flat key keyway on driving shaft and the impeller, impeller and driving shaft pass through first round head flat key fixed connection, the driving gear is installed to one end of driving shaft, the position design of installing the driving gear on the driving shaft is for conical structure and processing has round head flat key keyway, driving gear and driving shaft complex hole design be conical structure and processing have the gear groove, driving shaft and driving gear pass through taper fit and guarantee concentric auto-lock, through second round head flat key transmission moment of torsion between driving shaft and the driving gear, the outside of driving gear is equipped with stop washer and round nut in proper order, the driving gear relies on tapering and stop washer, round nut fastening location on the driving shaft;
the driven impeller assembly comprises a driven shaft and an impeller, wherein round head flat key grooves are formed in the driven shaft and the impeller, the impeller is fixedly connected with the driven shaft through a first round head flat key, a driven gear hub is installed at one end of the driven shaft, the round head flat key grooves are formed in the position of the driven shaft, which is used for installing the driven gear hub, in a design mode, of a conical structure, hub grooves are formed in the inner hole of the driven gear hub, which is matched with the driven shaft, in a machining mode, the driven shaft and the driven gear hub are in taper fit and ensure concentric self-locking, torque is transmitted between the driven shaft and the driven gear hub through a second round head flat key, a driven gear is installed outside the driven gear hub, the outer circle of the driven gear hub and the inner hole of the driven gear are in a conical structure, the outer circle of the driven gear hub and the inner hole of the driven gear are in taper fit and ensure concentric self-locking, and a stop washer and a round nut are sequentially arranged on the outer side of the driven gear hub, and the driven gear hub is fastened and positioned on the driven shaft through taper fit and stop washer and round nut.
2. The gear cone positioned Roots blower of claim 1, wherein said drive gear has a drive gear removal aperture.
3. The gear cone positioned Roots blower of claim 1, wherein said driven gear has a driven gear removal aperture.
4. The gear cone positioned Roots blower of claim 1, wherein the driven gear hub and driven gear are fastened with connecting bolts after the impeller gap between the driving impeller assembly and the driven impeller assembly is adjusted.
5. The gear cone positioned Roots blower of claim 4, wherein said driven gear hub is positioned and secured to the driven gear by an internally threaded conical pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320167656.7U CN219159188U (en) | 2023-02-09 | 2023-02-09 | Roots blower with conical positioning gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320167656.7U CN219159188U (en) | 2023-02-09 | 2023-02-09 | Roots blower with conical positioning gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219159188U true CN219159188U (en) | 2023-06-09 |
Family
ID=86619924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320167656.7U Active CN219159188U (en) | 2023-02-09 | 2023-02-09 | Roots blower with conical positioning gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219159188U (en) |
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2023
- 2023-02-09 CN CN202320167656.7U patent/CN219159188U/en active Active
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