CN214945221U - Gear transmission structure for small-volume vacuum pump - Google Patents
Gear transmission structure for small-volume vacuum pump Download PDFInfo
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- CN214945221U CN214945221U CN202121375870.9U CN202121375870U CN214945221U CN 214945221 U CN214945221 U CN 214945221U CN 202121375870 U CN202121375870 U CN 202121375870U CN 214945221 U CN214945221 U CN 214945221U
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Abstract
The utility model discloses a little volume vacuum pump in little volume vacuum pump field is with gear drive structure, including the pump body and gear transmission case, the inside one side fixedly connected with gear transmission case of the pump body, gear transmission case one side is created and is equipped with motor output shaft, gear transmission case opposite side is worn to be equipped with the power shaft, gear transmission case is last to be located the seal groove has been seted up to the power shaft periphery, the chucking has the sealing washer in the seal groove. The utility model discloses an inside ring gear that sets up of gear drive case is used for transmitting power with the gear cooperation, and when two gear engagement transmission power of the present adoption of solution that can be fine, problem that is bulky, reduction gear drive case that can be great occupy the volume, the practicality is extremely strong, and the setting of axle sleeve tip end face bearing can change the sliding friction between original axle sleeve and the gear drive case into rolling friction, can reduce frictional force greatly, improves transmission efficiency.
Description
Technical Field
The utility model relates to a little volume vacuum pump field specifically is little volume gear drive structure for vacuum pump.
Background
When the impeller pump works, in order to improve the rotating efficiency of the impeller, a transmission structure needs to be additionally arranged between the motor and the impeller so as to improve the transmission ratio, but the existing gear transmission box mostly adopts two gears for transmission, so that the occupied size is large, the gear transmission box is not practical, and the friction force between the shaft sleeve and a transmission part is large, so that the transmission efficiency is influenced. Accordingly, those skilled in the art have provided a gear transmission structure for a small-sized vacuum pump to solve the problems set forth in the background art described above.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a small size gear drive structure for vacuum pump to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a gear transmission structure for a small-volume vacuum pump comprises a pump body and a gear transmission case, wherein the gear transmission case is fixedly connected to one side in the pump body, a motor output shaft is arranged on one side of the gear transmission case, a power shaft penetrates through the other side of the gear transmission case, a sealing groove is formed in the gear transmission case and located on the periphery of the power shaft, a sealing ring is clamped in the sealing groove, the gear transmission case and the power shaft are rotationally sealed through the sealing ring, an inner gear ring is integrally formed in one end of the gear transmission case, the power shaft is located in the gear transmission case, a gear meshed with the inner gear ring is connected through a key, the inner gear ring is arranged in the gear transmission case and matched with the gear to transmit power, and the problem that the size is large when the existing two gears are meshed to transmit power can be well solved, the reduction that can be great gear drive case is extremely strong to the occuping of volume, the sealing washer can do the power shaft with gear drive case's joint position provides the rotation seal.
As a further aspect of the present invention: the shaft shoulder position on the motor output shaft is provided with a sealing gasket, the motor output shaft, the pump body and the gear transmission case are rotationally sealed through the sealing gasket, and the sealing gasket can seal the joint part of the motor output shaft, the pump body and the gear transmission case.
As a further aspect of the present invention: the power shaft is peripherally located on one side of the gear transmission case, an end face bearing is arranged on one side of the end face bearing, an impeller is arranged on one side of the shaft sleeve, the shaft sleeve can orient the installation position of the impeller, and sliding friction between the original shaft sleeve and the gear transmission case can be changed into rolling friction through the arrangement of the end face bearing, so that friction force can be greatly reduced, and transmission efficiency is improved.
As a further aspect of the present invention: the power shaft runs through the axle sleeve and be provided with lock nut after the impeller sets up, the impeller with be provided with the navigation key between the power shaft and carry out the transmission power, lock nut with through left-handed threaded connection between the power shaft, the impeller with the power shaft passes through lock nut fixed connection, lock nut can carry out the crimping with the impeller and fix, and left-handed screw can avoid when the impeller rotates, the not hard up problem of lock nut.
As a further aspect of the present invention: the sealing washer with sealed the pad is high temperature resistant rubber, can prolong the sealing washer with sealed life who fills up.
As a further aspect of the present invention: the shaft sleeve is connected with the impeller through a spline.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model has the advantages that the inner gear ring and the gear are arranged in the gear transmission case to be matched for transmitting power, so that the problem of large volume when the existing two gears are engaged for transmitting power can be solved well, the occupation of the gear transmission case on the volume can be greatly reduced, and the practicability is strong;
the utility model discloses the setting of axis cover end face bearing can change the sliding friction between original axle sleeve and the gear drive case into rolling friction, can reduce frictional force greatly, improves transmission efficiency.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of a middle gear box portion of the present invention;
FIG. 3 is a diagram of the meshing relationship between the middle gear and the inner gear ring of the present invention;
fig. 4 is a partially enlarged view of the sealing ring portion of fig. 2 according to the present invention.
In the figure: 1. a pump body; 2. an output shaft of the motor; 3. a gasket; 4. a gear transmission case; 5. a shaft sleeve; 6. a power shaft; 7. a positioning key; 8. an impeller; 9. locking the nut; 10. an inner gear ring; 11. a gear; 12. a sealing groove; 13. a seal ring; 14. and an end face bearing.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 4, in the embodiment of the present invention, a gear transmission structure for a small-volume vacuum pump includes a pump body 1 and a gear transmission case 4, the gear transmission case 4 is fixedly connected to one side inside the pump body 1, a motor output shaft 2 is created on one side of the gear transmission case 4, a power shaft 6 is inserted into the other side of the gear transmission case 4, a sealing groove 12 is formed on the gear transmission case 4 at the periphery of the power shaft 6, a sealing ring 13 is clamped and pressed in the sealing groove 12, the gear transmission case 4 and the power shaft 6 are rotationally sealed by the sealing ring 13, an inner gear ring 10 is integrally formed inside one end of the gear transmission case 4 of the motor output shaft 2, the power shaft 6 is connected inside the gear transmission case 4 by a key to a gear 11 engaged with the inner gear ring 10, the inner gear ring 10 is provided inside the gear transmission case 4 to cooperate with the gear 11 for transmitting power, so as to solve the problem that when two gears 11 are engaged for transmitting power, the problem of bulky, reduction gear transmission case 4 that can be great occupy the volume, the practicality is extremely strong, and sealing washer 13 can provide the rotation seal for the joint position of power shaft 6 and gear transmission case 4.
Wherein, the shaft shoulder position on the motor output shaft 2 is provided with a sealing gasket 3, the motor output shaft 2, the pump body 1 and the gear transmission case 4 are rotationally sealed through the sealing gasket 3, the sealing gasket 3 can seal the joint part of the motor output shaft 2, the pump body 1 and the gear transmission case 4, the periphery of the power shaft 6 is provided with an end surface bearing 14 at one side of the gear transmission case 4, one side of the end surface bearing 14 is provided with a shaft sleeve 5, one side of the shaft sleeve 5 is provided with an impeller 8, the shaft sleeve 5 can orient the installation part of the impeller 8, the arrangement of the end surface bearing 14 can change the original sliding friction between the shaft sleeve 5 and the gear transmission case 4 into rolling friction, the friction force can be greatly reduced, the transmission efficiency is improved, the power shaft 6 is provided with a locking nut 9 after penetrating through the shaft sleeve 5 and the impeller 8, and a positioning key 7 is arranged between the impeller 8 and the power shaft 6 for transmitting power, through left-handed threaded connection between lock nut 9 and the power shaft 6, impeller 8 passes through lock nut 9 fixed connection with power shaft 6, and lock nut 9 can carry out the crimping with impeller 8 and fix, and left-handed thread can avoid when impeller 8 rotates, the not hard up problem of lock nut 9, and sealing washer 13 and sealed 3 of filling up are high temperature resistant rubber, can prolong the life of sealing washer 13 and sealed 3 of filling up, through splined connection between axle sleeve 5 and the impeller 8.
The utility model discloses a theory of operation is: when the transmission structure works, the motor output shaft 2 rotates, the power shaft 6 can be driven to rotate under the meshing of the even-speed ring gear 10 and the gear 11, and then power is transmitted to the impeller 8 to rotate through the positioning key 7, so that the power transmission is realized, the problem of large volume when the power is transmitted by meshing two gears 11 in the prior art can be well solved by arranging the ring gear 10 inside the gear transmission case 4 and matching the ring gear with the gear 11 for transmitting power, the occupation of the gear transmission case 4 on the volume can be greatly reduced, the practicability is strong, the sealing ring 13 can provide rotary sealing for the joint part of the power shaft 6 and the gear transmission case 4, the sealing gasket 3 can seal the joint part of the motor output shaft 2, the pump body 1 and the gear transmission case 4, and the sealing ring 13 can provide rotary sealing for the joint part of the power shaft 6 and the gear transmission case 4, the arrangement of the end face bearing 14 at the end part of the shaft sleeve 5 can change the sliding friction between the original shaft sleeve and the gear transmission case into rolling friction, thereby greatly reducing the friction force and improving the transmission efficiency.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. Small gear drive structure for vacuum pump, including the pump body (1) and gear transmission case (4), its characterized in that: the pump body (1) inside one side fixedly connected with gear transmission case (4), gear transmission case (4) one side is created and is equipped with motor output shaft (2), power shaft (6) are worn to be equipped with by gear transmission case (4) opposite side, lie in on gear transmission case (4) seal groove (12) have been seted up to power shaft (6) periphery, the clamping pressure has sealing washer (13) in seal groove (12), gear transmission case (4) with power shaft (6) pass through sealing washer (13) rotate sealedly, motor output shaft (2) are located the inside integrated into one piece of gear transmission case (4) one end has ring gear (10), power shaft (6) are located gear transmission case (4) inside through the key connection have with gear (11) of ring gear (10) meshing.
2. The gear transmission structure for a small-volume vacuum pump according to claim 1, wherein: the shaft shoulder position on the motor output shaft (2) is provided with a sealing gasket (3), and the motor output shaft (2) is rotationally sealed with the pump body (1) and the gear transmission case (4) through the sealing gasket (3).
3. The gear transmission structure for a small-volume vacuum pump according to claim 1, wherein: the power shaft (6) is peripherally located on one side of the gear transmission case (4) and is provided with an end face bearing (14), one side of the end face bearing (14) is provided with a shaft sleeve (5), and one side of the shaft sleeve (5) is provided with an impeller (8).
4. The gear transmission structure for a small-volume vacuum pump according to claim 3, wherein: the power shaft (6) runs through the shaft sleeve (5) and the impeller (8) is provided with a locking nut (9) after being arranged, the impeller (8) and a positioning key (7) arranged between the power shaft (6) are used for transmitting power, the locking nut (9) is connected with the power shaft (6) through left-hand threads, and the impeller (8) and the power shaft (6) are fixedly connected through the locking nut (9).
5. The gear transmission structure for a small-volume vacuum pump according to claim 2, wherein: the sealing ring (13) and the sealing gasket (3) are made of high-temperature-resistant rubber.
6. The gear transmission structure for a small-volume vacuum pump according to claim 3, wherein: the shaft sleeve (5) is connected with the impeller (8) through a spline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121375870.9U CN214945221U (en) | 2021-06-21 | 2021-06-21 | Gear transmission structure for small-volume vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121375870.9U CN214945221U (en) | 2021-06-21 | 2021-06-21 | Gear transmission structure for small-volume vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214945221U true CN214945221U (en) | 2021-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121375870.9U Active CN214945221U (en) | 2021-06-21 | 2021-06-21 | Gear transmission structure for small-volume vacuum pump |
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| Country | Link |
|---|---|
| CN (1) | CN214945221U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115596757A (en) * | 2022-10-19 | 2023-01-13 | 珠海精实测控技术股份有限公司（Cn） | Transmission device of interpenetration test equipment and sound insulation box test system |
-
2021
- 2021-06-21 CN CN202121375870.9U patent/CN214945221U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115596757A (en) * | 2022-10-19 | 2023-01-13 | 珠海精实测控技术股份有限公司（Cn） | Transmission device of interpenetration test equipment and sound insulation box test system |
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