CN212868178U - Sliding bearing type pitot tube pump - Google Patents
Sliding bearing type pitot tube pump Download PDFInfo
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- CN212868178U CN212868178U CN201920313667.5U CN201920313667U CN212868178U CN 212868178 U CN212868178 U CN 212868178U CN 201920313667 U CN201920313667 U CN 201920313667U CN 212868178 U CN212868178 U CN 212868178U
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- bearing
- transmission shaft
- pitot tube
- tube pump
- sliding bearing
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Abstract
The utility model relates to a sliding bearing type pitot tube pump, which comprises a bearing box, a transmission shaft rotationally connected in the bearing box and a rotary shell fixed at one end of the transmission shaft, wherein a rolling bearing and a sliding bearing are respectively arranged in the bearing box; the sliding bearing comprises an outer sleeve and an inner sleeve, the outer sleeve is fixedly connected with the bearing box, the inner sleeve is in clearance fit with the outer sleeve, the inner sleeve can rotate relative to the outer sleeve, and the inner surface of the inner sleeve is fixedly connected with the transmission shaft. In the process of conveying the fluid by the pitot tube pump, the transmission shaft rotates at a high speed; the main load borne by the pitot tube pump is radial load, the radial load of the transmission shaft is borne through the sliding bearing, and the sliding bearing has stable work and no noise, so that the pitot tube pump has low vibration and noise at high rotating speed, and the load capacity of the pitot tube pump for bearing impact is improved; the rolling bearing only bears the axial force of the transmission shaft, and the service life of the rolling bearing is prolonged.
Description
Technical Field
The utility model belongs to the technical field of the fluid transport technique and specifically relates to a slide bearing type pitot tube pump is related to.
Background
The pitot tube pump comprises main parts such as a pump body, a flow guide assembly, a mechanical seal assembly, a pitot tube, a shaft, an impeller, a rotating shell, a bearing box body and the like, wherein the rotating part consisting of the shaft, the rotating shell and the impeller is connected with the bearing box through a rolling bearing, and the bearing box is fixed on a base or a foundation. During operation, the shaft drives the rotating shell to rotate, the pitot tube is still in the rotating shell cavity, the rotating shell rotates to drive liquid in the rotating shell cavity to rotate, and the liquid enters the pitot tube and flows out of the pump body through the liquid outlet channel of the flow guide assembly.
However, the conventional pitot tube pump has a short service life of a rolling bearing under a high-speed heavy load and large vibration and noise in the working process.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a slide bearing formula pitot tube pump adopts slide bearing to bear radial force, and antifriction bearing bears the axial force, and it is little to have vibration and noise, the longer advantage of bearing life-span.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: a sliding bearing type pitot tube pump comprises a bearing box, a transmission shaft and a rotating shell, wherein the transmission shaft is rotatably connected in the bearing box, the rotating shell is fixed at one end of the transmission shaft, and a rolling bearing and a sliding bearing are respectively arranged in the bearing box; the sliding bearing comprises an outer sleeve and an inner sleeve, the outer sleeve is fixedly connected with the bearing box, the inner sleeve is in clearance fit with the outer sleeve, the inner sleeve can rotate relative to the outer sleeve, and the inner surface of the inner sleeve is fixedly connected with the transmission shaft.
By adopting the technical scheme, the transmission shaft rotates at a high speed in the process of conveying the fluid by the pitot tube pump; the main load borne by the pitot tube pump is radial load, the radial load of the transmission shaft is borne by the sliding bearing, and the sliding bearing has stable and reliable work and no noise, so that the pitot tube pump has low vibration and noise at high rotating speed, and the load capacity of the pitot tube pump for bearing impact is improved; in addition, the rolling bearing only bears the axial force of the transmission shaft, so that the service life of the rolling bearing is prolonged.
The utility model discloses further set up to: the sliding bearing is two, one sliding bearing is located the transmission shaft is close to the one end of rotatory shell, and another sliding bearing is located the transmission shaft is close to rolling bearing department.
By adopting the technical scheme, the sliding bearing close to the rotating shell can bear the high load generated by the high-speed rotation of the rotating shell; the sliding bearing close to the rolling bearing can share the high load on the rolling bearing when the transmission shaft rotates at high speed.
The utility model discloses further set up to: and the inner surface of the inner sleeve is provided with a key for connecting with the transmission shaft.
By adopting the technical scheme, the inner sleeve is detachably fixed on the transmission shaft through the interference fit of the key and the key groove on the transmission shaft, so that the assembly and disassembly of the sliding bearing and the transmission shaft are more convenient.
The utility model discloses further set up to: the inner surface of the outer sleeve is provided with a plurality of grooves, babbitt alloy is arranged in the grooves, and when the inner sleeve rotates relative to the outer sleeve, the babbitt alloy is used for lubricating the contact surface of the outer sleeve and the inner sleeve.
By adopting the technical scheme, the Babbitt alloy layer is formed between the inner sleeve and the outer sleeve through the Babbitt alloy, so that the friction loss and the surface abrasion between the inner sleeve and the outer sleeve can be greatly reduced; and the babbitt metal has a lubricating effect, so that the service life and the maintenance time of the sliding bearing are prolonged, and the production cost is effectively reduced.
The utility model discloses further set up to: the recess is the ring channel, the recess has threely, and three the recess is equidistant setting.
By adopting the technical scheme, the babbit metal can be better and uniformly distributed on the contact surface of the inner sleeve and the outer sleeve, and further the friction loss between the inner sleeve and the outer sleeve is smaller.
The utility model discloses further set up to: and the side surface of the outer sleeve is provided with a supplementary hole communicated with the annular groove, and a rubber plug is inserted in the supplementary hole.
Adopt above-mentioned technical scheme, it will be easier to supply the babbitt metal in the recess through supplementary hole, and the rubber buffer can prevent that the babbitt metal from supplementing the hole and outwards overflowing to scatter.
The utility model discloses further set up to: the inner aperture of the supplementary hole is larger than the outer aperture of the supplementary hole.
By adopting the technical scheme, the structural strength of the sliding bearing is ensured, so that the rubber plug is not easy to break away from the complementary hole.
To sum up, the utility model discloses a beneficial technological effect does: in the process of conveying the fluid by the pitot tube pump, the transmission shaft rotates at a high speed; the main load borne by the pitot tube pump is radial load, the radial load of the transmission shaft is borne by the sliding bearing, and the sliding bearing has stable and reliable work and no noise, so that the pitot tube pump has low vibration and noise at high rotating speed, and the load capacity of the pitot tube pump for bearing impact is improved; in addition, the rolling bearing only bears the axial force of the transmission shaft, so that the service life of the rolling bearing is prolonged; a Babbitt alloy layer is formed between the inner sleeve and the outer sleeve through Babbitt alloy, so that the friction loss and the surface abrasion between the inner sleeve and the outer sleeve can be greatly reduced; and the babbitt metal has a lubricating effect, so that the service life and the maintenance time of the sliding bearing are prolonged, and the production cost is effectively reduced.
Drawings
FIG. 1 is a cross-sectional view of the structure of an embodiment of the present invention;
fig. 2 is a partial sectional view of a plain bearing in an embodiment of the invention.
In the figure, 1, a bearing housing; 2. a drive shaft; 3. rotating the housing; 4. a rolling bearing; 5. a sliding bearing; 51. a jacket; 52. an inner sleeve; 6. a key; 7. a groove; 8. babbitt metal; 9. a refill hole; 10. a rubber plug; 11. a pump support; 12. a pitot tube; 13. an impeller cover; 14. a flow guide assembly.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A sliding bearing type pitot tube pump is shown in figures 1 and 2 and comprises a pump shell with two open ends, a bearing box 1 and a flow guide assembly 14, wherein the bearing box 1 and the flow guide assembly 14 are fixedly connected to two ends of the pump shell respectively. The bearing box 1 is connected with a transmission shaft 2 in a rotating mode, the tail end of the transmission shaft 2 is fixedly connected with a rotating shell 3, an impeller cover 13 is fixedly connected onto the rotating shell 3, the rotating shell 3 and the impeller cover 13 are assembled to form an impeller with a hollow rotor cavity, a mechanical seal is installed between an inlet of the impeller cover 13 and a flow guide assembly 14, a pitot tube 12 is fixed onto the flow guide assembly 14, and an inlet of the pitot tube 12 is located in the rotor cavity. The bearing box 1 is fixedly connected with a pump support 11, and the pitot tube pump is installed on the base platform through the pump support 11.
A rolling bearing 4 and a sliding bearing 5 are respectively arranged in the bearing box 1, and the transmission shaft 2 rotates at a high speed in the process of conveying fluid by the pitot tube pump; the main load borne by the pitot tube pump is a radial load, the radial load of the transmission shaft 2 is borne by the sliding bearing 5, and the sliding bearing 5 has stable, reliable and noiseless work, so that the pitot tube pump has low vibration and noise at high rotating speed, and the load capacity of the pitot tube pump for bearing impact is improved; in addition, the rolling bearing 4 will only bear the axial force of the transmission shaft 2, thereby prolonging the service life of the rolling bearing 4.
The two sliding bearings 5 are provided, one sliding bearing 5 is positioned at one end of the transmission shaft 2 close to the rotating shell 3, and the other sliding bearing 5 is positioned at the position of the transmission shaft 2 close to the rolling bearing 4; the high load generated by the high-speed rotation of the rotating shell 3 can be distributed through the sliding bearing 5 close to the rotating shell 3; the high load on the rolling bearing 4 during high-speed rotation of the drive shaft 2 can be distributed by the sliding bearing 5 located close to the rolling bearing 4.
The sliding bearing 5 comprises an outer sleeve 51 and an inner sleeve 52, the outer sleeve 51 is fixedly connected with the bearing box 1, the inner sleeve 52 is in clearance fit with the outer sleeve 51, the inner sleeve 52 can rotate relative to the outer sleeve 51, and the inner surface of the inner sleeve 52 is fixedly connected with the transmission shaft 2; the inner surface of the inner sleeve 52 is integrally formed with a key 6 for being connected with the transmission shaft 2, and the inner sleeve 52 is detachably fixed on the transmission shaft 2 through interference fit of the key 6 and a key 6 groove on the transmission shaft 2, so that the assembly and disassembly of the sliding bearing 5 and the transmission shaft 2 are more convenient.
The inner surface of the outer sleeve 51 is provided with a plurality of grooves 7, the grooves 7 are filled with the babbit alloy 8, and when the inner sleeve 52 rotates relative to the outer sleeve 51, the babbit alloy 8 is used for lubricating the contact surface between the outer sleeve 51 and the inner sleeve 52; the Babbitt 8 layer is formed between the inner sleeve 52 and the outer sleeve 51 through the Babbitt 8, so that the friction loss and the surface abrasion between the inner sleeve 52 and the outer sleeve 51 can be greatly reduced; and the babbitt metal 8 has a lubricating effect, so that the service life and the maintenance time of the sliding bearing 5 are prolonged, and the production cost is effectively reduced. The grooves 7 are annular grooves, the number of the grooves 7 is three, and the three grooves 7 are arranged at equal intervals, so that the babbitt metal 8 can be better and uniformly distributed on the contact surface of the inner sleeve 52 and the outer sleeve 51, and further the friction loss between the inner sleeve 52 and the outer sleeve 51 is smaller.
The lateral surface of the outer sleeve 51 is provided with a replenishing hole 9 communicated with the annular groove, a rubber plug 10 is inserted in the replenishing hole 9, the replenishing of the babbit metal 8 in the groove 7 through the replenishing hole 9 is easier, and the rubber plug 10 can prevent the babbit metal 8 from overflowing and scattering from the replenishing hole 9. The inner aperture of the supplementary hole 9 is larger than the outer aperture of the supplementary hole 9, so that the rubber plug 10 is not easy to be separated from the supplementary hole 9 under the condition of ensuring the structural strength of the sliding bearing 5.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (7)
1. The utility model provides a slide bearing formula pitot tube pump, includes bearing housing (1), rotate connect in transmission shaft (2) in bearing housing (1) and be fixed in rotatory shell (3) of transmission shaft (2) one end, its characterized in that: a rolling bearing (4) and a sliding bearing (5) are respectively arranged in the bearing box (1), and the sliding bearing (5) is positioned at the position, close to the rolling bearing (4), of the transmission shaft (2); the sliding bearing (5) comprises an outer sleeve (51) and an inner sleeve (52), the outer sleeve (51) is fixedly connected with the bearing box (1), the inner sleeve (52) is in clearance fit with the outer sleeve (51), the inner sleeve (52) can rotate relative to the outer sleeve (51), and the inner surface of the inner sleeve (52) is fixedly connected with the transmission shaft (2).
2. A sliding bearing pitot tube pump as claimed in claim 1 wherein: the number of the sliding bearings (5) is two, and the other sliding bearing (5) is positioned at one end of the transmission shaft (2) close to the rotating shell (3).
3. A sliding bearing pitot tube pump as claimed in claim 1 wherein: the inner surface of the inner sleeve (52) is provided with a key (6) for connecting with the transmission shaft (2).
4. A sliding bearing pitot tube pump as claimed in claim 1 wherein: the inner surface of the outer sleeve (51) is provided with a plurality of grooves (7), the grooves (7) are internally provided with babbitt metal (8), and when the inner sleeve (52) rotates relative to the outer sleeve (51), the babbitt metal (8) is used for lubricating the contact surface of the outer sleeve (51) and the inner sleeve (52).
5. A plain bearing pitot tube pump according to claim 4, wherein: the groove (7) is an annular groove, and the number of the grooves (7) is three, and the three grooves (7) are arranged at equal intervals.
6. A plain bearing pitot tube pump according to claim 5, wherein: and the side surface of the outer sleeve (51) is provided with a supplementary hole (9) communicated with the annular groove, and a rubber plug (10) is inserted in the supplementary hole (9).
7. A sliding bearing pitot tube pump according to claim 6, wherein: the inner aperture of the supplementary hole (9) is larger than the outer aperture of the supplementary hole (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920313667.5U CN212868178U (en) | 2019-03-13 | 2019-03-13 | Sliding bearing type pitot tube pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920313667.5U CN212868178U (en) | 2019-03-13 | 2019-03-13 | Sliding bearing type pitot tube pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212868178U true CN212868178U (en) | 2021-04-02 |
Family
ID=75185195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920313667.5U Active CN212868178U (en) | 2019-03-13 | 2019-03-13 | Sliding bearing type pitot tube pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212868178U (en) |
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2019
- 2019-03-13 CN CN201920313667.5U patent/CN212868178U/en active Active
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