CN215762262U

CN215762262U - Bearing body assembly of multistage centrifugal pump

Info

Publication number: CN215762262U
Application number: CN202121043523.6U
Authority: CN
Inventors: 许义锋
Original assignee: Zhejiang Siemu Pump Co ltd
Current assignee: Zhejiang Siemu Pump Co ltd
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2022-02-08
Anticipated expiration: 2031-05-17

Abstract

The utility model provides a bearing body assembly of a multistage centrifugal pump, and belongs to the technical field of centrifugal pumps. The problem that axial movement easily occurs after the existing multistage centrifugal pump operates for a long time is solved. This multistage centrifugal pump's bearing body subassembly, this centrifugal pump include into water shell and output shaft, still include with output shaft matched with bearing subassembly, the bearing subassembly by slewing bearing and supply slewing bearing installation and rather than matched with bearing frame constitution, the shell that intakes is provided with the outside arch of axial on slewing bearing's the terminal surface, and is the cavity setting, and with the tail end shell of the coaxial setting of output shaft, tail end shell are located the opening part and are provided with rather than linking firmly mutually and supply the connecting shell of bearing frame installation, are provided with rather than linking firmly mutually and being used for strengthening the thrust unit who prevents scurrying the effect in the connecting shell. The utility model has the advantages of stable operation and axial movement prevention.

Description

Bearing body assembly of multistage centrifugal pump

Technical Field

The utility model belongs to the technical field of centrifugal pump accessories, and relates to a bearing body assembly of a multistage centrifugal pump.

Background

Axial float may appear along with the lapse of time at the operation in-process in current multistage centrifugal pump to influence the work efficiency of the pump body and its life, but the bearing body structure among the current centrifugal pump generally is used for sealed and heat dissipation, can not fine reply axial float's problem, and its structure is complicated relatively simultaneously, and it is fairly inconvenient to change the assembly.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provide a bearing body assembly which reduces axial play and is convenient to replace.

The purpose of the utility model can be realized by the following technical scheme: the utility model provides a bearing body subassembly of multistage centrifugal pump, this centrifugal pump include into water shell and output shaft, its characterized in that still includes the bearing subassembly with output shaft matched with, the bearing subassembly by slewing bearing and supply the slewing bearing installation and constitute rather than matched with bearing frame, the shell that intakes be provided with the outside arch of axial on slewing bearing's the terminal surface, and be the cavity setting, and with the tail end shell of the coaxial setting of output shaft, the tail end shell be located the opening part and be provided with rather than link firmly and supply the connecting shell of bearing frame installation mutually, the connecting shell in be provided with rather than link firmly mutually and be used for strengthening the thrust unit of anti-channeling effect.

In the bearing body assembly of the multistage centrifugal pump, the outer end surface of the tail end shell is provided with a semicircular notch part arranged along the length direction of the tail end shell, and the length of the notch part is smaller than that of the tail end shell.

In foretell bearing body subassembly of multistage centrifugal pump, the connection shell be cavity setting, the connection shell towards a terminal surface of tail end shell be provided with rather than linking firmly mutually and with output shaft matched with sealing ring, the connection shell form by last casing and lower casing concatenation equipment.

In foretell multistage centrifugal pump's bearing body subassembly, the bearing frame be located the external diameter outside-in crescent and intersection at both ends, last casing and inferior valve position all be provided with radial inside bellied semicircle bulge loop on the internal perisporium of bearing frame department, two the semicircle bulge loop seted up with bearing frame matched with mounting groove.

In the bearing body assembly of the multistage centrifugal pump, the thrust unit comprises a thrust disc, an adjusting ring, a locking cap and an end cover, the thrust disc comprises a front disc and a rear disc, a plurality of connecting blocks which are arranged along the circumferential direction of the front disc and are connected with the front disc and the rear disc are arranged between the front disc and the rear disc, the front disc and the rear disc are both hollow, the inner diameter of the front disc is larger than that of the rear disc, the rear disc is sleeved on the output shaft, the adjusting ring and the locking cap are sleeved on the output shaft and are positioned at the front side and the rear side of the rear disc, the position of the rear disc is limited by the locking cap, the front end face of the adjusting ring is flush with the front end face of the front disc, the rear end face of the adjusting ring is abutted against the front end face of the rear disc, and the end cover is fixedly connected with the upper shell and the lower shell through a plurality of studs.

Compared with the prior art, this bearing body subassembly of multistage centrifugal pump has following advantage:

1. the water inlet shell is provided with an axial outward bulge on the end face of the rotary bearing and is in a hollow arrangement, and the tail end shell is coaxially arranged on the output shaft, the tail end shell is positioned at the opening and is provided with a connecting shell which is fixedly connected with the tail end shell and used for mounting a bearing seat, and a thrust unit which is fixedly connected with the connecting shell and used for strengthening the anti-channeling effect is arranged in the connecting shell.

Drawings

Fig. 1 is a schematic perspective view of a bearing body assembly of the multistage centrifugal pump at a water inlet casing portion.

Fig. 2 is a schematic perspective view showing a disassembled upper casing at a joint casing in the bearing body assembly of the multistage centrifugal pump.

Fig. 3 is a schematic sectional view of the bearing body assembly of the multistage centrifugal pump.

In the figure, 1, a water inlet shell part; 2. an output shaft; 3. a bearing assembly; 4. a rotating bearing; 5. a bearing seat; 6. a tail end housing; 7. a connecting shell; 8. a thrust unit; 9. a notch portion; 10. a seal ring; 11. an upper housing; 12. a lower housing; 13. a semicircular convex ring; 14. mounting grooves; 15. a thrust plate; 16. an adjusting ring; 17. a locking cap; 18. an end cap; 19. a front plate; 20. a rear disc; 21. and (4) connecting the blocks.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, fig. 2 and fig. 3, the bearing assembly of the multistage centrifugal pump comprises a water inlet casing 1 and an output shaft 2, and further comprises a bearing assembly 3 connected with the water inlet casing 1 and matched with the output shaft 2, the bearing assembly 3 is composed of a rotary bearing 4 and a bearing seat 5 for mounting the rotary bearing 4 and matched with the rotary bearing 4, the end surface of the water inlet casing 1 facing the rotary bearing 4 is provided with an axially outward bulge and is hollow, and a tail end casing 6 coaxially arranged with the output shaft 2, the tail end casing 6 is provided with a connecting casing 7 fixedly connected with the tail end casing at an opening and used for mounting the bearing seat 5, the connecting casing 7 is internally provided with a thrust unit 8 fixedly connected with the connecting casing and used for enhancing the anti-channeling effect, the thrust unit 8 is composed of a thrust disc 15, an adjusting ring 16, a locking cap 17 and an end cover 18, the thrust disc 15 is composed of a front disc 19 and a rear disc 20, a plurality of connecting blocks 21 which are arranged along the circumferential direction and are connected with each other are arranged between the front disc 19 and the rear disc 20, the front disc 19 and the rear disc 20 are both arranged in a hollow manner, the inner diameter of the front disc 19 is larger than that of the rear disc 20, a gap is reserved between the inner diameter of the front disc 19 and the outer diameter of the output shaft 2, the rear disc 20 is sleeved on the output shaft 2, an adjusting ring 16 and a locking cap 17 are sleeved on the output shaft 2 and positioned at the front side and the rear side of the rear disc 20, the position of the rear disc 20 is limited by the locking cap 17, the front end surface of the adjusting ring 16 is flush with the front end surface of the front disc 19, the rear end surface of the adjusting ring 16 is in contact with the front end surface of the rear disc 20, the adjusting ring 16 is connected with the output shaft 2 through a key block, the rear part of the key block assembly is extended into the rear disc 20, and the end cover 18 is fixedly connected with the upper shell 11 and the lower shell 12 through a plurality of studs, a plurality of heat dissipation holes are formed in the upper shell 11 and the lower shell 12.

As a preferred structure, the outer end surface of the tail end shell 6 is provided with a notch portion 9 which is arranged along the length direction and is semicircular, the length of the notch portion 9 is smaller than that of the tail end shell 6, and the inner peripheral wall of the tail end shell 6 positioned in the left side of the notch portion 9 is provided with a packing seal assembly.

In detail, in order to improve the anti-moving effect and facilitate assembly, the connecting shell 7 is hollow, a sealing ring 10 fixedly connected with one end surface of the connecting shell 7 facing the tail end shell 6 and matched with the output shaft 2 is arranged on one end surface of the connecting shell 7, the connecting shell 7 is formed by splicing and assembling an upper shell 11 and a lower shell 12, the upper shell 11 and the lower shell 12 are connected through a plurality of studs, a groove for installing the sealing ring 10 is formed in the inner peripheral wall of the upper shell 11 and the lower shell 12 at the sealing ring 10, a ring edge which is radially inwards protruded and used for limiting the position of the sealing ring 10 is arranged on the inner wall of one end of the upper shell 11 and the lower shell 12 at the sealing ring 10, the outer diameters of the two ends of the bearing seat 5 are gradually increased from outside to inside and are intersected at one position, semicircular convex rings 13 which are radially inwards protruded are arranged on the inner peripheral walls of the upper shell 11 and the lower shell 12 at the bearing seat 5, two semicircular convex rings 13 are provided with installation grooves 14 matched with the bearing seat 5, the upper housing 11 is provided with a limit bolt on the upper end surface of the bearing seat 5 for further limiting the position of the bearing seat 5.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims

1. The utility model provides a bearing body subassembly of multistage centrifugal pump, this centrifugal pump include into water shell (1) and output shaft (2), its characterized in that still include with output shaft (2) matched with bearing subassembly (3), bearing subassembly (3) by swivel bearing (4) and supply swivel bearing (4) installation and rather than matched with bearing frame (5) constitute, the shell that intakes (1) be provided with the outside arch of axial on the terminal surface of swivel bearing (4), and be the cavity setting, and with tail end shell (6) of output shaft (2) coaxial setting, tail end shell (6) be located the opening part and be provided with rather than link firmly and supply connection shell (7) of bearing frame (5) installation mutually, connection shell (7) in be provided with rather than link firmly mutually and be used for strengthening anti-channeling thrust unit (8) of effect.

2. The bearing body assembly of the multistage centrifugal pump according to claim 1, wherein the outer end surface of the tail end shell (6) is provided with a semicircular notch portion (9) arranged along the length direction of the tail end shell, and the length of the notch portion (9) is smaller than that of the tail end shell (6).

3. The bearing body assembly of the multistage centrifugal pump according to claim 1, wherein the connecting shell (7) is hollow, a sealing ring (10) fixedly connected with one end face of the connecting shell (7) facing the tail end shell (6) and matched with the output shaft (2) is arranged on one end face of the connecting shell, and the connecting shell (7) is formed by splicing and assembling an upper shell (11) and a lower shell (12).

4. The bearing body assembly of the multistage centrifugal pump according to claim 3, wherein the outer diameters of the bearing seats (5) at the two ends gradually increase from outside to inside and meet at a same position, the inner peripheral walls of the upper shell (11) and the lower shell (12) at the bearing seats (5) are provided with semicircular convex rings (13) protruding radially inwards, and the two semicircular convex rings (13) are provided with mounting grooves (14) matched with the bearing seats (5).

5. The bearing body assembly of a multistage centrifugal pump according to claim 4, wherein the thrust unit (8) is composed of a thrust disk (15), an adjusting ring (16), a locking cap (17) and an end cover (18), the thrust disk (15) is composed of a front disk (19) and a rear disk (20), a plurality of connecting blocks (21) which are arranged along the circumferential direction of the thrust disk and are connected with the front disk (19) and the rear disk (20) are arranged between the front disk (19) and the rear disk (20), the front disk (19) and the rear disk (20) are both hollow, the inner diameter of the front disk (19) is larger than that of the rear disk (20), the rear disk (20) is sleeved on the output shaft (2), the adjusting ring (16) and the locking cap (17) are both sleeved on the output shaft (2) and are positioned at the front and rear sides of the rear disk (20), and the position of the rear disk (20) is limited by the locking cap (17), the preceding terminal surface of adjustable ring (16) with the preceding terminal surface looks parallel and level of preceding dish (19), and the rear end face of adjustable ring (16) with the preceding terminal surface of back dish (20) is inconsistent, end cover (18) through a plurality of double-screw bolt with go up casing (11) and casing (12) link firmly mutually down.