CN218760562U

CN218760562U - Sliding bearing shaft sleeve mounting structure

Info

Publication number: CN218760562U
Application number: CN202222105002.XU
Authority: CN
Inventors: 赵俊杰; 陈功明; 刘校江; 姜学仕; 李晶
Original assignee: Baiyin Nonferrous Group Co Ltd
Current assignee: Baiyin Nonferrous Group Co Ltd
Priority date: 2022-08-11
Filing date: 2022-08-11
Publication date: 2023-03-28
Anticipated expiration: 2032-08-11

Abstract

The utility model discloses a slide bearing axle sleeve mounting structure relates to the concentrated acid circulating pump technical field of system sour technology, and there is the defect to lead to doing the frequent technical problem of circulating pump trouble of inhaling in the slide bearing part of solution current dry circulating pump rotor part, including pump shaft, axle sleeve and impeller, the pump shaft has set firmly the connecting axle and cup joints the axle, and the diameter of connecting axle is greater than the cover spiale, has cup jointed the axle sleeve on the cover spiale, and the axle sleeve is provided with the bar lug between the axle sleeve and the cup joint axle, axle sleeve and cup joint axle clearance fit, axle sleeve one end and connecting axle butt, has seted up logical groove an on the tip cross-section of axle sleeve, are provided with first O type circle in the logical groove an, cup joint axle and the annular cavity an that the connecting axle formed with first O type circle interference fit. The utility model discloses an assembly mode changes rigid connection into by original elastic connection, and sealed mode is changed into non-bearing type structure by original bearing type structure, and fundamentally has eliminated the problem of sealed pad damage, ensures the steady operation of equipment.

Description

Sliding bearing shaft sleeve mounting structure

Technical Field

The utility model relates to a concentrated acid circulating pump technical field of system sour technology, more specifically relate to a slide bearing axle sleeve mounting structure technical field.

Background

In the dry absorption process of the acid making process, a dry absorption tower, a concentrated acid circulating pump, a circulating acid tank and an acid cooler are generally arranged. The concentrated acid circulating pump is an indispensable main device in the acid making system, and its effect is in continuously stable transport to the absorption tower with required absorption liquid, and the flue gas in the absorption tower is circulated repeatedly to the acidizing fluid, and other measures such as rethread water addition produce our required concentration's sulphuric acid, and the normal operating of acid making system can even be influenced to the running state of this equipment directly.

Since the system is started, the dry suction circulating pump has frequent faults, and the damaged part is located at the rotor part, which causes extremely adverse effect on normal production.

This equipment rotor part mainly by reform transform preceding pump shaft, reform transform the front axle sleeve, the bush, the impeller etc. is constituteed, as shown in figure 5, reform transform front axle sleeve and bush for location and slip in the effect of rotor part, relative rotation takes place between reforming transform front axle sleeve and the bush, but reform transform and be provided with strip piece before reforming transform between front axle sleeve and the transformation preceding pump shaft, relative motion can not take place, belong to transition fit between the two, the fit-up gap is 1mm, reform transform the front axle sleeve and reform transform the sealed plane fluorine rubber pad that uses between the preceding pump shaft, this kind of sealed advantage lies in playing completely sealed, ensure that the acidizing fluid can not get into between axle sleeve and the pump shaft, but this sealed drawback lies in the equipment unavoidably has vibrations when heavy load operation of equipment, can the fluorine rubber pad damage, thereby cause to reform transform and produce relative drunkenness between front axle sleeve and the transformation preceding pump shaft, lead to reform transform the front axle sleeve and reform transform the preceding pump shaft wearing and tearing, finally lead to equipment damage.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: there is the defect in the slide bearing part of inhaling circulating pump rotor part futilely in order to solve above-mentioned dry and lead to inhaling the frequent technical problem of circulating pump trouble futilely, the utility model provides a slide bearing axle sleeve mounting structure.

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:

the utility model provides a slide bearing shaft sleeve mounting structure, includes pump shaft, axle sleeve and impeller, the one end that the pump shaft is close to the impeller has set firmly the connecting axle in proper order and has cup jointed the axle, the diameter of connecting axle is greater than cup joint the axle, cup joint epaxial the axle sleeve, the axle sleeve with be provided with the bar lug between the cup joint the axle, the axle sleeve with cup joint an clearance fit, the axle sleeve is close to the one end of connecting axle with the connecting axle butt, the axle sleeve is close to logical groove an has been seted up on the tip cross-section of connecting axle, it is provided with first O type circle to lead to groove an, cup joint the annular cavity an that axle and connecting axle formed with first O type circle interference fit.

Furthermore, the cross section of the end part of the shaft sleeve, which is far away from the connecting shaft, is provided with a through groove b, the through groove b is in mirror symmetry with the through groove a, the inner wall of the shaft sleeve is provided with a strip-shaped through groove along the direction of the central line of the shaft sleeve, and two ends of the strip-shaped through groove along the direction of the central line of the shaft sleeve are respectively communicated with the groove bottoms of the through groove a and the through groove b.

Furthermore, the strip-shaped convex block is arranged on the outer circumference of one end, close to the connecting shaft, of the sleeve connection shaft, and the strip-shaped convex block is in clearance fit with the strip-shaped through groove and is consistent in length.

Further, the one end cover that is close to logical groove b on the cover spiale is equipped with the impeller, the mount pad of impeller with the axle sleeve butt, be provided with the mounting hole on the mount pad of impeller, the connecting axle with mounting hole interference fit.

Furthermore, a second O-shaped ring is arranged in the through groove b, and an annular cavity b formed by the through groove b, the sleeve shaft and the mounting seat is in interference fit with the second O-shaped ring.

Furthermore, a fixed shaft is fixedly arranged at one end, far away from the connecting shaft, of the sleeving connecting shaft, an external thread connected with a spare cap in a threaded mode is arranged on the fixed shaft, and the opening of the spare cap is abutted to the mounting seat.

Furthermore, the pump shaft, the connecting shaft, the sleeved shaft and the fixed shaft are integrally formed, and the axes of the pump shaft, the connecting shaft, the sleeved shaft and the fixed shaft are overlapped.

Further, the installation clearance between the shaft sleeve and the sleeve shaft is 1mm.

Further, the central line of the through groove a is superposed with the axis of the shaft sleeve, and the diameter of the through groove a is larger than that of the inner wall of the shaft sleeve and smaller than the radial diameter of the connecting shaft.

The beneficial effects of the utility model are as follows:

1. the mounting structure of the pump shaft and the shaft sleeve of the utility model changes the original elastic connection into rigid connection in the assembly mode; the sealing mode is changed from the original bearing type structure to a non-bearing type structure, so that the problem of damage of the sealing gasket is fundamentally eliminated; the mounting structure has the advantages that the mounting structure cannot be damaged along with the impact of equipment, the phenomenon that the shaft sleeve and the pump shaft generate relative movement due to the damage of the sealing gasket is avoided, the shaft sleeve and the pump shaft are abraded to cause frequent faults of a dry suction circulating pump, and the stable operation of the equipment is ensured.

2. The utility model discloses set up connecting axle and cup joint axle on the pump shaft, because the two diameters are different, the outer circumference of connecting axle forms the rigidity protruding portion at the two junctions, cup joints the axle sleeve on the cup joint axle, makes the tip cross-section of axle sleeve and the protruding portion butt of junction, forms rigid connection, avoids having vibrations when equipment heavy load operation, and causes and produces relative drunkenness between axle sleeve and the pump shaft, leads to axle sleeve and pump shaft wearing and tearing; in order to ensure the sealing performance of the connecting part, a through groove a is formed in the section of the end part of the shaft sleeve, which is close to one end of the connecting shaft, and a first O-shaped ring is arranged in an annular cavity a formed by the through groove a, the sleeve shaft and the connecting shaft and forms interference fit.

3. The utility model discloses clearance fit between spiale and the axle sleeve, for guaranteeing that the axle sleeve can rotate along with cup jointing the axle in step, set up the bar and lead to the groove on the axle sleeve inner wall, and set firmly the bar lug on the spiale of cup jointing, make the bar lug slide in from the one end that the groove was led to the bar during assembly, make bar lug and bar lead to the groove formation clearance fit, when the pump shaft rotates, the axle sleeve follows under the effect of bar lug and cup joints the synchronous rotation of axle, avoid cup jointing the axle and take place relative rotation with the axle sleeve, arouse equipment trouble.

4. The utility model discloses keep away from the one end installation impeller of connecting axle on the cover spiale to through-hole on the mount pad that makes the impeller forms interference fit with the cover spiale, for guaranteeing that the acidizing fluid can not get into between pump shaft and the axle sleeve from the junction, cause the damage, set up logical groove b in the one end that the axle sleeve is close to the impeller, and set up second O type circle in logical groove b, with the mount pad and the axle sleeve butt of impeller, with this department at the butt forms annular cavity b, annular cavity b forms interference fit with second O type circle during.

5. The utility model has the advantages of simple structure, easily change, it is lower to reform transform the cost, is favorable to reducing the plant maintenance frequency, reduces the plant maintenance expense, is applicable to the improvement of equipment of the same type.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of the connection between the shaft sleeve and the pump shaft according to the present invention;

fig. 3 is a sectional view of the shaft sleeve of the present invention;

fig. 4 is a top view of the bushing of the present invention;

FIG. 5 is a schematic structural view of the utility model before modification;

reference numerals: the pump comprises a pump shaft 1, a connecting shaft 2, a shaft sleeve 3, a strip-shaped convex block 4, a mounting seat 5, an impeller 6, a spare cap 7, a fixed shaft 8, a second O-shaped ring 9, a sleeve shaft 10, a first O-shaped ring 11, an annular cavity b12, an annular cavity a13, a through groove b14, a strip-shaped through groove 15, a through groove a16, a pump shaft before modification 17, a front shaft sleeve before modification 18, a fluorine rubber pad 19 and a front strip-shaped block before modification 20.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

Example 1

As shown in fig. 1 and 5, this embodiment provides a sliding bearing shaft sleeve mounting structure, including pump shaft 1, axle sleeve 3 and impeller 6, the one end that pump shaft 1 is close to impeller 6 has set firmly connecting axle 2 and cup joints axle 10 in proper order, the diameter of connecting axle 2 is greater than cup joint axle 10, cup joint on the cup joint axle 10 axle sleeve 3, axle sleeve 3 with be provided with bar lug 4 between the cup joint axle 10, axle sleeve 3 with cup joint axle 10 clearance fit, axle sleeve 3 be close to the one end of connecting axle 2 with connecting axle 2 butt, axle sleeve 3 is close to logical groove a16 has been seted up on the tip cross-section of connecting axle 2, be provided with first O type circle 11 in the logical groove a16, cup joint axle 10 and the annular cavity an 13 that connecting axle 2 formed with first O type circle 11 interference fit.

The elastic connection formed by adding the fluororubber pad 19 into the gap between the modified front pump shaft 17 and the modified front shaft sleeve 18 is characterized in that the connecting shaft 2 and the sleeve shaft 10 with different diameters are arranged on the pump shaft 1, so that a rigid protruding part is formed at the joint of the outer circumference of the connecting shaft 2 with a larger diameter to form direct rigid butt, the shaft sleeve 3 is sleeved on the sleeve shaft 10 with a smaller diameter to ensure that the end section of the shaft sleeve 3 is butted with the protruding part at the joint to form rigid connection, thereby avoiding the relative movement between the shaft sleeve 3 and the pump shaft 1 caused by the vibration during heavy-load operation of equipment and leading to the abrasion between the shaft sleeve 3 and the pump shaft 1, and in order to ensure the sealing performance of the joint, the through groove a16 is arranged on the end section of the shaft sleeve 3 close to one end of the connecting shaft 2, and the first O-shaped ring 11 is arranged in the annular cavity a13 formed by the through groove a16, the sleeve shaft 10 and the connecting shaft 2 to form interference fit, thereby replacing the original fluororubber pad 19.

Clearance fit between cup jointing axle 10 and the axle sleeve 3, for guaranteeing that axle sleeve 3 can rotate along with cup jointing axle 10 is synchronous, set up bar lug 4 between cup jointing axle 10 and axle sleeve 3, avoid cup jointing axle 10 and axle sleeve 3 to take place relative rotation, arouse equipment trouble.

The utility model discloses an assembly mode changes rigid connection into by original elastic connection, and sealed mode is changed into non-bearing type structure by original bearing type structure, and fundamentally has eliminated the problem of sealed pad damage, ensures the steady operation of equipment.

Example 2

As shown in fig. 1 to fig. 3, based on embodiment 1, a through groove b14 is formed in a cross section of an end portion of the shaft sleeve 3, which is far away from the connecting shaft 2, the through groove b14 is mirror-symmetric to the through groove a16, a strip-shaped through groove 15 is formed in an inner wall of the shaft sleeve 3 along a central line direction of the shaft sleeve 3, and two ends of the strip-shaped through groove 15 along the central line direction of the shaft sleeve 3 are respectively communicated with groove bottoms of the through groove a16 and the through groove b 14. The strip-shaped convex blocks 4 are arranged on the outer circumference of one end, close to the connecting shaft 2, of the sleeve connecting shaft 10, and the strip-shaped convex blocks 4 are in clearance fit with the strip-shaped through grooves 15 and are consistent in length. The utility model discloses a simple structure, including cover spiale 10, connecting axle 2, logical groove b14, the one end cover that is close to on the cover spiale 10 is equipped with impeller 6, impeller 6 the mount pad 5 with 3 butts of axle sleeve, be provided with the mounting hole on impeller 6's the mount pad 5, connecting axle 2 with mounting hole interference fit. A second O-shaped ring 9 is arranged in the through groove b14, and an annular cavity b12 formed by the through groove b14, the sleeve shaft 10 and the mounting seat 5 is in interference fit with the second O-shaped ring 9.

Offer the logical groove b14 with logical groove a16 mirror symmetry in the one end of axle sleeve 3 keeping away from connecting axle 2, the inner tube of axle sleeve 3 communicates logical groove a16 and the tank bottom of logical groove b14, the diameter of the inner tube of axle sleeve 3 is less than the diameter of logical groove a16, set up bar logical groove 15 along its central line on the inner wall of the inner tube of axle sleeve 3, the both ends of bar logical groove 15 communicate and are the open end with the tank bottom that logical groove a16 and logical groove b14 are located on the axle sleeve wall respectively, set firmly bar lug 4 along its axis on cup jointing axle 10, make bar lug 4 slide in from the one end of bar logical groove 15 during the assembly, make bar lug 4 and bar logical groove 15 form clearance fit, when pump shaft 1 rotates, axle sleeve 3 follows cup jointing axle 10 synchronous revolution under bar lug 4's effect.

Keep away from the one end installation impeller 6 of connecting axle 2 on the grafting axle 10 to make the through-hole on the mount pad 5 of impeller 6 and grafting axle 10 form interference fit, for guaranteeing that the acidizing fluid can not get into between pump shaft 1 and the axle sleeve 3 from the junction, cause the damage, logical groove b14 is seted up to the one end that is close to impeller 6 at axle sleeve 3, and set up second O type circle 9 in logical groove b14, with the mount pad 5 and the 3 butt of axle sleeve of impeller 6, form annular cavity b with this in butt department, annular cavity b forms interference fit with second O type circle 9 during.

Example 3

As shown in fig. 1, according to embodiment 2, a fixing shaft 8 is fixedly disposed at one end of the sleeve shaft 10 away from the connecting shaft 2, an external thread connected with a spare cap 7 is disposed on the fixing shaft 8, and an opening of the spare cap 7 abuts against the mounting seat 5. The pump shaft 1, the connecting shaft 2, the sleeved shaft 10 and the fixed shaft 8 are integrally formed, and axes of the two shafts are overlapped.

The fixing shaft 8 is connected with the spare cap 7 in a threaded manner, the opening of the spare cap 7 covers the mounting hole in the mounting seat 5, the diameter of the fixing shaft 8 is smaller than that of the sleeve connecting shaft 10, a rigid protrusion is formed at the joint of the fixing shaft 8 and the sleeve connecting shaft 10, and the opening of the spare cap 7 is abutted against the rigid protrusion part at the joint and the mounting seat 5 simultaneously during screwing so as to form stable connection. The utility model discloses a pump shaft 1, connecting axle 2, cup joint axle 10 and fixed axle 8 adopt the integrated into one piece structure, and the dead in line, increase rigidity and stability.

Claims

1. The utility model provides a slide bearing axle sleeve mounting structure, includes pump shaft (1), axle sleeve (3) and impeller (6), its characterized in that, the one end that pump shaft (1) is close to impeller (6) has set firmly connecting axle (2) in proper order and cup joints axle (10), the diameter of connecting axle (2) is greater than cup joint axle (10), cup joint on cup joint axle (10) axle sleeve (3), axle sleeve (3) with be provided with bar lug (4) between cup joint axle (10), axle sleeve (3) with cup joint axle (10) clearance fit, axle sleeve (3) are close to the one end of connecting axle (2) with connecting axle (2) butt, axle sleeve (3) are close to logical a (16) have been seted up on the tip cross-section of connecting axle (2), be provided with first O type circle (11) in logical a (16), the annular cavity a (13) that logical a (16), cup joint axle (10) and connecting axle (2) formed with first O type circle (11) interference fit.

2. The sliding bearing shaft sleeve mounting structure according to claim 1, wherein a through groove b (14) is formed in a cross section of an end portion of the shaft sleeve (3) far away from the connecting shaft (2), the through groove b (14) is mirror-symmetrical to the through groove a (16), a strip-shaped through groove (15) is formed in the inner wall of the shaft sleeve (3) along the central line direction of the shaft sleeve (3), and two ends of the strip-shaped through groove (15) along the central line direction of the shaft sleeve (3) are respectively communicated with the groove bottoms of the through groove a (16) and the through groove b (14).

3. A plain bearing sleeve mounting structure according to claim 2, wherein said strip-shaped projection (4) is provided on an outer circumference of an end of said sleeve spindle (10) near said connecting shaft (2), said strip-shaped projection (4) being in clearance fit with said strip-shaped through groove (15) and having a uniform length.

4. A sliding bearing sleeve mounting structure according to claim 2, wherein an end of the sleeve shaft (10) close to the through slot b (14) is sleeved with an impeller (6), a mounting seat (5) of the impeller (6) abuts against the sleeve (3), a mounting hole is provided on the mounting seat (5) of the impeller (6), and the connecting shaft (2) is in interference fit with the mounting hole.

5. A plain bearing sleeve mounting arrangement according to claim 4, characterised in that a second O-ring (9) is provided in the through-slot b (14), and the annular cavity b (12) formed by the through-slot b (14), the sleeve shaft (10) and the mounting seat (5) is in interference fit with the second O-ring (9).

6. A plain bearing bush mounting structure according to claim 4, characterized in that a fixed shaft (8) is fixedly arranged at one end of the bush shaft (10) far away from the connecting shaft (2), an external thread connected with a spare cap (7) is arranged on the fixed shaft (8), and an opening of the spare cap (7) is abutted against the mounting seat (5).

7. A plain bearing sleeve mounting arrangement according to claim 6, wherein the pump shaft (1), the connecting shaft (2), the sleeve shaft (10) and the stationary shaft (8) are formed integrally and their axes coincide.

8. A plain bearing bushing mounting structure according to claim 1, characterized in that the mounting clearance of the bushing (3) to the bushing shaft (10) is 1mm.

9. A plain bearing bushing mounting structure according to claim 1, characterized in that the center line of the through-groove a (16) coincides with the axis of the bushing (3), the diameter of the through-groove a (16) being larger than the diameter of the inner wall of the bushing (3) and smaller than the radial diameter of the connecting shaft (2).