CN218669809U - Low-speed heavy-load transmission assembly of water-ring vacuum pump and device thereof - Google Patents
Low-speed heavy-load transmission assembly of water-ring vacuum pump and device thereof Download PDFInfo
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- CN218669809U CN218669809U CN202222950916.6U CN202222950916U CN218669809U CN 218669809 U CN218669809 U CN 218669809U CN 202222950916 U CN202222950916 U CN 202222950916U CN 218669809 U CN218669809 U CN 218669809U
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Abstract
The utility model discloses a water ring vacuum pump low-speed heavy load drive assembly and device thereof, drive assembly include the transmission shaft, locate the first bearing subassembly of transmission shaft transmission end and locate the second bearing subassembly of the non-transmission end of transmission shaft. The first bearing assembly comprises a circular ring roller bearing arranged at the transmission end of the transmission shaft, and the circular ring roller bearing is fixed in the first bearing seat. The second bearing assembly comprises a double-row tapered roller bearing arranged at the non-transmission end of the transmission shaft, the double-row tapered roller bearing is fixed in the second bearing seat, the two roller retainers are symmetrically distributed around the center of the transmission shaft, the small end parts of the tapered rollers in the two roller retainers are oppositely arranged, and the large end part of the outer ring of the tapered roller bearing radially extends inwards to form an annular folded edge. Compared with the prior art, the bearing stress problem of the water ring vacuum pump in the prior art is solved, and meanwhile the service life of the bearing is prolonged.
Description
Technical Field
The utility model relates to a rubber bearing, axle sleeve class parts machining technical field, concretely relates to water ring vacuum pump low-speed heavy load transmission assembly and device thereof.
Background
In recent years, with the adjustment and upgrading of coal and chemical industries, water-ring vacuum pumps are developing towards large air volume and high vacuum, the characteristics of low rotating speed, large size and maximization of the water-ring vacuum pumps are more obvious, and for manufacturers, the key problem of ensuring the efficient and stable operation of the large water-ring vacuum pumps is to solve the bearing stress problem and prolong the service life of the bearings.
When the pump works, the main shaft of the large water-ring vacuum pump is used for transmitting large torque generated by the motor, so that the impeller of the vacuum pump rotates and pumps gas media, the main shaft bears the gravity of the rotor body part, and the gravity is transmitted to the bearing block through the bearings which are symmetrically distributed and further transmitted to the side cover. And finally transferred to the unit base. From a pure theoretical state, the bearings only check radial force, and because the bearings are symmetrically distributed according to the centers of the impellers, the mechanical distribution is uniform, and the unit has good mechanical property during operation. But the actual situation is: due to processing and installation errors, when the water ring vacuum pump operates, circumferential additional force generated by the coupler, radial force caused by pressure difference between an inlet and an outlet when the vacuum pump operates, upward acting force of the water ring on a shaft and centrifugal force caused by unbalance of the impeller are superposed, and large axial additional force is generated besides large radial force. Meanwhile, the existing bearing needs to be frequently added with lubricating oil, the residence time of the lubricating oil in the bearing is limited, and the lubricating oil is also one of the important points influencing the performance of the bearing.
Therefore, how to prolong the service life of the bearing and solve the stress problem of the bearing, and the reliable and stable operation of the water ring vacuum pump becomes a technical problem which needs to be solved urgently.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned technique not enough, provide a water ring vacuum pump low-speed heavy load transmission subassembly and device thereof, the bearing atress problem of solving among the prior art water ring vacuum pump still improves bearing life.
In order to achieve the technical purpose, the utility model adopts the following technical proposal:
a low-speed heavy-load transmission assembly of a water-ring vacuum pump comprises a transmission shaft, a first bearing assembly arranged at the transmission end of the transmission shaft and a second bearing assembly arranged at the non-transmission end of the transmission shaft; the first bearing component comprises a circular ring roller bearing arranged at the transmission end of the transmission shaft, and the circular ring roller bearing is fixed in the first bearing seat; the second bearing assembly comprises a double-row tapered roller bearing arranged at the non-transmission end of the transmission shaft, the double-row tapered roller bearing is fixed in the second bearing seat, the two tapered roller bearings of the double-row tapered roller bearing respectively comprise a tapered assembly and an outer ring, the tapered assembly comprises an inner ring, a tapered roller and roller holders, the two roller holders are symmetrically distributed around the center of the transmission shaft, the big end ends of the tapered rollers in the two roller holders are arranged oppositely, and the small end of the outer ring of the tapered roller bearing extends inwards along the radial direction to form an annular folded edge.
Preferably, the retainer forms a plurality of windows for the tapered rollers to protrude along the circumferential direction, and two opposite side walls of the windows are arranged in an arc transition manner.
Preferably, the bearing raceways of the inner and outer rings of the toroidal roller bearing are both concave and symmetrically distributed around the bearing center, and the rolling elements of the toroidal roller bearing are in a waist drum shape.
Preferably, two inner rings of the double-row tapered roller bearing are arranged at intervals, and a bearing spacer ring is arranged between the two inner rings of the double-row tapered roller bearing.
Preferably, the inner wall of the outer ring and the outer wall of the inner ring of the tapered roller bearing and the surface of the tapered roller are respectively bonded with a lubricating layer.
Preferably, the lubricating coating is a graphene coating.
A low-speed heavy-load transmission device of a water-ring vacuum pump comprises a low-speed heavy-load transmission assembly of the water-ring vacuum pump, a transmission side cover and a transmission side distributor which are arranged at a transmission end of a transmission shaft, a non-transmission side cover and a non-transmission side distributor which are arranged at a non-transmission end of the transmission shaft, an impeller sleeved on the transmission shaft and a pump body positioned outside the impeller; the first bearing seat is connected with the transmission side distributor through a transmission side cover, the second bearing seat is connected with the non-transmission side distributor through a non-transmission side cover, and two ends of the pump body are respectively connected with the non-transmission side distributor and the transmission side distributor.
Compared with the prior art, the utility model provides a water ring vacuum pump low-speed heavy load transmission subassembly and device, water ring vacuum pump moves, outside producing very big radial force to the bearing, still will produce great axial additional force, because non-drive end bearing is fixed, choose double-row tapered roller bearing for use, two roller holders encircle transmission shaft central symmetric distribution, the little head end of tapered roller in two roller holders sets up relatively, can bear great radial force and certain axial force, the drive end bearing can freely move, adopt circular ring roller bearing, can bear radial force, the unlimited axial displacement ability of spherical roller bearing's self aligning ability and circular ring roller bearing has been combined simultaneously, it had circular ring roller bearing's bearing capacity, the aligning performance that has double-row aligning roller bearing again, the axial displacement regulation ability that these two kinds of bearings do not possess still, circular ring roller bearing cooperatees with double-row tapered roller bearing, it can improve bearing life greatly, make water ring vacuum pump's operation reliable, stable. Meanwhile, the large head end of the outer ring extends towards the axis along the radial direction to form an annular folded edge, so that lubricating oil can be blocked to form an oil storage tank, the flowing rate of the lubricating oil can be reduced, and a certain amount of the lubricating oil can be stored.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a low-speed heavy-load transmission device of a water-ring vacuum pump provided by the present invention.
FIG. 2 is an enlarged view of a portion of FIG. 1 with a toroidal roller bearing;
fig. 3 is an enlarged view of a portion of fig. 1 where the double row tapered roller bearing is provided.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-3, an embodiment of the present invention provides a low-speed and heavy-load transmission assembly for a water-ring vacuum pump, which includes a transmission shaft 1, a first bearing assembly 100 disposed at a transmission end of the transmission shaft 1, and a second bearing assembly 200 disposed at a non-transmission end of the transmission shaft 1.
The first bearing assembly 100 includes a circular roller bearing 10 installed at the transmission end of the transmission shaft 1, and the circular roller bearing 10 is fixed in the first bearing seat 2.
The second bearing assembly 200 includes a double-row tapered roller bearing 11 installed at the non-transmission end of the transmission shaft 1, the double-row tapered roller bearing 11 is fixed in the second bearing seat 9, both tapered roller bearings of the double-row tapered roller bearing 11 include a tapered assembly and an outer ring 112, the tapered assembly includes an inner ring 111, a tapered roller 113 and roller retainers, the two roller retainers are symmetrically distributed around the center of the transmission shaft 1, the small end of the tapered roller 113 in the two roller retainers is arranged oppositely, and the large end of the outer ring 112 of the tapered roller bearing extends inwards along the radial direction to form an annular folded edge 1121.
The utility model provides a water ring vacuum pump low-speed heavy load transmission assembly, when water ring vacuum pump moves, produce outside very big radial force to the bearing, still will produce great axial additional force, because non-transmission end bearing is fixed, choose double-row tapered roller bearing 11 for use, two roller holders encircle transmission shaft 1 central symmetric distribution, the little head end of tapered roller 113 in two roller holders sets up relatively, can bear great radial force and certain axial force, transmission end bearing can free movement, adopt circular roller bearing 10, can bear the radial force, the unlimited axial displacement ability of self-aligning ability and circular roller bearing who has combined spherical roller bearing simultaneously, it both has circular roller bearing's bearing capacity, double-row tapered roller bearing's aligning performance has again, still have the axial displacement regulating power that these two kinds of bearings do not possess, circular roller bearing 10 cooperatees with double-row tapered roller bearing 11, it can improve bearing life greatly, make the operation of water ring vacuum pump reliable, and stable. Meanwhile, the large end of the outer ring 112 of the tapered roller bearing extends along the radial direction towards the axis to form an annular folded edge 1121, which can block the lubricating oil to form an oil storage tank, reduce the flowing rate of the lubricating oil and store a certain amount of the lubricating oil.
In this embodiment, the retainer forms a plurality of windows for the tapered rollers to protrude in the circumferential direction, and two opposite side walls of the windows are arranged in an arc transition manner. The scratch of the tapered roller during rotation can be reduced, so as to protect the peripheral surface of the tapered roller.
In this embodiment, the bearing raceways of the inner and outer races of the toroidal roller bearing 10 are both concave and symmetrically distributed around the center of the bearing, and the rolling elements of the toroidal roller bearing are in a drum shape. The structure can bear radial force, simultaneously combines the self-aligning capability of the spherical roller bearing and the unlimited axial displacement capability of the circular roller bearing, has the bearing capability of the circular roller bearing, also has the aligning performance of the double-row aligning roller bearing, and also has the axial displacement adjusting capability which is not possessed by the two types of bearings.
In practical application, two inner rings of the double-row tapered roller bearing 11 are arranged at intervals, and a bearing spacer ring is arranged between the two inner rings of the double-row tapered roller bearing 11.
It can be understood that the inner wall of the outer ring 112 and the outer wall of the inner ring 111 of the tapered roller bearing and the surface of the tapered roller 113 are both bonded with a lubricating layer, and the lubricating layer is a graphene coating. Graphene has the heat dispersion of high heat conduction, strengthens the inside connection stability of bearing, and the temperature that friction produced when avoiding the fast rotation of bearing area is too high, avoids the condition of high temperature rotation abnormal wear. The inner wall of the outer ring 112 and the outer wall of the inner ring 111 of the tapered roller bearing and the tapered roller 113 are respectively and fixedly provided with a graphene coating, so that the rotation stability and the antifriction effect of the tapered roller can be enhanced.
The application still provides a water ring vacuum pump low-speed heavy load transmission, including water ring vacuum pump low-speed heavy load transmission assembly, still including drive side cover 3 and the transmission side distributor 4 of locating 1 transmission end of transmission shaft, locate non-transmission side cover 8, the non-transmission side distributor 7 of 1 non-transmission end of transmission shaft to and the cover locate the impeller 6 on the transmission shaft 1 and be located the pump body 5 in the impeller outside. The first bearing block 2 is connected with the transmission side distributor 4 through a transmission side cover 3, the second bearing block 9 is connected with the non-transmission side distributor 7 through a non-transmission side cover 8, and two ends of the pump body 5 are respectively connected with the non-transmission side distributor 7 and the transmission side distributor 4.
To sum up, the utility model provides a water ring vacuum pump low-speed heavy load transmission and subassembly thereof, water ring vacuum pump during operation, outside producing very big radial force to the bearing, still will produce great axial additional force, because non-drive end bearing is fixed, choose double-row tapered roller bearing for use, two roller holders encircle transmission shaft central symmetry distribution, the little head end of tapered roller in two liang of roller holders sets up relatively, can bear great radial force and certain axial force, the drive end bearing can freely move, adopt circular ring roller bearing, can bear the radial force, the unlimited axial displacement ability of spherical roller bearing's self aligning ability and circular ring roller bearing has been combined simultaneously, it both has circular ring roller bearing's bearing capacity, but also has double-row aligning bearing's aligning performance, still have the axial displacement regulating capacity that these two kinds of bearings do not possess, circular ring roller bearing cooperatees with double-row tapered roller bearing, it can improve bearing life greatly, make water ring vacuum pump's operation reliable, stable. Meanwhile, two ends of the outer ring extend towards the axis along the radial direction to form annular folded edges, so that lubricating oil can be blocked to form an oil storage tank, the flowing rate of the lubricating oil can be reduced, and a certain amount of the lubricating oil can be stored.
The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.
Claims (7)
1. A low-speed heavy-load transmission assembly of a water-ring vacuum pump is characterized by comprising a transmission shaft, a first bearing assembly arranged at the transmission end of the transmission shaft and a second bearing assembly arranged at the non-transmission end of the transmission shaft;
the first bearing assembly comprises a circular ring roller bearing arranged at the transmission end of the transmission shaft, and the circular ring roller bearing is fixed in the first bearing seat;
the second bearing assembly comprises a double-row tapered roller bearing arranged at the non-transmission end of the transmission shaft, the double-row tapered roller bearing is fixed in the second bearing seat, the two tapered roller bearings of the double-row tapered roller bearing respectively comprise a tapered assembly and an outer ring, the tapered assembly comprises an inner ring, a tapered roller and roller holders, the two roller holders are symmetrically distributed around the center of the transmission shaft, the big end ends of the tapered rollers in the two roller holders are arranged oppositely, and the small end of the outer ring of the tapered roller bearing extends inwards along the radial direction to form an annular folded edge.
2. The low-speed and heavy-load transmission assembly of a water-ring vacuum pump as claimed in claim 1, wherein the retainer is formed with a plurality of windows for the tapered rollers to protrude, and two opposite side walls of the windows are arranged in an arc transition manner.
3. The low-speed and heavy-duty transmission assembly for a water-ring vacuum pump according to claim 1, wherein the bearing raceways of the inner and outer races of the toroidal roller bearing are both concave and symmetrically distributed around the center of the bearing, and the rolling elements of the toroidal roller bearing are in a shape of a waist drum.
4. The low-speed heavy-duty transmission assembly of a water-ring vacuum pump according to claim 1, wherein two inner rings of the double-row tapered roller bearing are spaced apart from each other, and a bearing spacer is disposed between the two inner rings of the double-row tapered roller bearing.
5. The low-speed and heavy-load transmission assembly of a water-ring vacuum pump as claimed in claim 1, wherein the inner wall and the outer wall of the outer ring of the tapered roller bearing and the surface of the tapered roller are bonded with a lubricating layer.
6. The water-ring vacuum pump low-speed heavy-duty transmission assembly according to claim 5, wherein said lubricating layer is a graphene coating.
7. A low-speed heavy-load transmission device of a water-ring vacuum pump, which is characterized by comprising the low-speed heavy-load transmission assembly of the water-ring vacuum pump as claimed in any one of claims 1 to 6, and further comprising a transmission side cover and a transmission side distributor which are arranged at the transmission end of a transmission shaft, a non-transmission side cover and a non-transmission side distributor which are arranged at the non-transmission end of the transmission shaft, an impeller sleeved on the transmission shaft and a pump body which is positioned outside the impeller; the first bearing seat is connected with the transmission side distributor through a transmission side cover, the second bearing seat is connected with the non-transmission side distributor through a non-transmission side cover, and two ends of the pump body are respectively connected with the non-transmission side distributor and the transmission side distributor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222950916.6U CN218669809U (en) | 2022-11-07 | 2022-11-07 | Low-speed heavy-load transmission assembly of water-ring vacuum pump and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222950916.6U CN218669809U (en) | 2022-11-07 | 2022-11-07 | Low-speed heavy-load transmission assembly of water-ring vacuum pump and device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218669809U true CN218669809U (en) | 2023-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222950916.6U Active CN218669809U (en) | 2022-11-07 | 2022-11-07 | Low-speed heavy-load transmission assembly of water-ring vacuum pump and device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218669809U (en) |
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- 2022-11-07 CN CN202222950916.6U patent/CN218669809U/en active Active
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