CN214196678U

CN214196678U - Novel horizontal multistage pump axial force balancing device

Info

Publication number: CN214196678U
Application number: CN202022524493.2U
Authority: CN
Inventors: 文永吉; 柴建院; 杨江泽; 李斌
Original assignee: Shanxi Jieyi Electric Pump Manufacturing Co ltd
Current assignee: Shanxi Jieyi Electric Pump Manufacturing Co ltd
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-09-14
Anticipated expiration: 2030-11-04

Abstract

The utility model belongs to the technical field of the multistage pump, and a novel horizontal multistage pump axial force balancing unit is disclosed, which comprises a pump body, the right side of the pump body has the rear bearing body through the bolt fastening intercommunication, the tail-hood has been cup jointed in the inside activity of rear bearing body right-hand member. The utility model discloses a set up first blade chute, second blade chute and ring groove, because the design of second blade chute, can introduce inside with the outside liquid of gimbal body, finally enter into the inside of ring groove, and because the design of first blade chute, can introduce inside with the outside liquid of gimbal body, finally will mix with the inside liquid of second blade chute and ring groove, thereby played abundant lubrication action to first friction surface and second friction surface, the emergence of dry friction phenomenon has been avoided, the wearing and tearing between first friction surface and the second friction surface have been reduced, the life of the gimbal body and gimbal body has been improved.

Description

Novel horizontal multistage pump axial force balancing device

Technical Field

The utility model belongs to the technical field of the multistage pump, specifically a novel horizontal multistage pump axial force is balanced device.

Background

The multi-stage pump is a centrifugal pump combining a water inlet section and a water outlet section with a middle section through a pull rod, the output water pressure of the multi-stage pump can be very high, the centrifugal force is obtained by the rotation of an impeller, and the multi-stage pump realizes air suction, compression and air exhaust by the change of the volume of a pump cavity, so the multi-stage pump is a variable-volume centrifugal pump.

At present, when an operator conveys liquid, a multistage pump is often used, a balance structure is arranged in the general multistage pump, when the existing balance mechanism works normally, a balance disc and a balance ring are in a state of being separated if the balance disc and the balance ring are in a state of being separated, namely friction surfaces of the balance disc and the balance ring generate intermittent friction, because the friction surfaces have large areas and large friction force, the shaft power is large and the efficiency is low, if a return water pipeline of a balance system is blocked or backwater is not smooth due to rusting and the like, the pressure in a balance chamber is increased at the moment, so that the friction surfaces of the balance disc and the balance ring can only be tightly combined and can not be separated, the liquid can not enter between the friction surfaces, the friction surfaces of the balance disc and the balance ring are in a dry friction state for a long time, the shaft power is increased, and the balance disc and the balance ring can also be quickly abraded, so that the balance disc and the balance ring belong to an easily-abraded part, the short life requires frequent replacement, which increases the cost of the pump and therefore requires improvement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above problem, the utility model provides a novel horizontal multistage pump axial force balancing unit has the advantage of avoiding dry friction and increase of service life.

In order to achieve the above object, the utility model provides a following technical scheme: a novel horizontal multi-stage pump axial force balancing device comprises a pump body, wherein the right side of the pump body is fixedly communicated with a rear bearing body through bolts, a tail cover is sleeved on the inner portion of the right end of the rear bearing body in a movable mode, the right side of the tail cover is positioned outside the rear bearing body, the tail cover is fixedly connected with the rear bearing body through bolts, the left side of the pump body is fixedly communicated with a front bearing body through bolts, an end cover is sleeved on the inner portion of the left end of the front bearing body in a movable mode, the left end of the end cover is positioned outside the front bearing body, the front bearing body is fixedly connected with the end cover through bolts, a pump shaft body is sleeved on the inner portion of the pump body in a movable mode, the left end of the pump shaft body penetrates through the end cover and extends to the outer portion of the end cover and is fixedly sleeved with a pump coupling, the right end of the pump shaft body penetrates through the tail cover and extends to the inner portion of the tail cover, a liquid inlet is fixedly communicated with the left side of the top of the pump body, the right side of the top of the pump body is fixedly communicated with a liquid outlet, the outer surface of the pump shaft body is fixedly sleeved with an impeller positioned between a liquid inlet and the liquid outlet, the outer surface of the pump shaft body is fixedly sleeved with a balance disc body positioned on the right side of the liquid outlet and inside the pump body, the inner wall of the pump body is fixedly provided with a balance ring body positioned on the left side of the balance disc body, the inner side of the balance ring body is movably connected with the outer surface of the balance disc body, the right side of the balance ring body is movably connected with the left side of the balance disc body, the inner wall of the pump body is fixedly provided with a balance sleeve positioned on the left side of the balance ring body, the inner wall of the balance sleeve is movably connected with the outer surface of the balance disc body, the left side of the balance disc body is provided with a first friction surface, the right side of the balance ring body is provided with a second friction surface, and the balance disc body and the balance ring body are both provided with a circular ring inner port, the inside of compensating ring body is seted up and is located the outside ring groove of ring inner opening, the inside of compensating ring body is seted up and is located the outside second blade chute of ring groove, second blade chute communicates with the ring groove each other, the inside of first friction surface is seted up and is located the outside first blade chute of ring inner opening, the ring inner opening communicates with each other with first blade chute.

As an optimal technical scheme of the utility model, the inside fixed mounting of end cover has first bearing, the inner wall of first bearing cup joints with the surface mounting of pump shaft body left end, because the design of first bearing will make the more smoothness of pump shaft body at the pivoted in-process.

As a preferred technical scheme of the utility model, the inside fixed mounting of tailhood has the second bearing, the inner wall of second bearing cup joints with the surface mounting of pump shaft body right-hand member, because the design of second bearing, will have strengthened pump shaft body pivoted smoothness nature.

As a preferred technical scheme of the utility model, the quantity of impeller is three, three the size of impeller is the same, and is three the impeller distance each other is the same, because it is three the work efficiency of this multistage pump will have been strengthened in the design of impeller.

As an optimal technical scheme of the utility model, the inboard of compensating ring body and compensating ring is all smooth, and the right side of compensating ring and the left side fixed connection of compensating ring body, because the inboard of compensating ring body and compensating ring is all smooth to more smooth when making the pump shaft body drive the balance disc body and rotate.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a set up first blade chute, second blade chute and ring groove, because the design of second blade chute, can introduce inside with the outside liquid of gimbal body, finally enter into the inside of ring groove, and because the design of first blade chute, can introduce inside with the outside liquid of gimbal body, finally will mix with the inside liquid of second blade chute and ring groove, thereby played abundant lubrication action to first friction surface and second friction surface, the emergence of dry friction phenomenon has been avoided, the wearing and tearing between first friction surface and the second friction surface have been reduced, the life of the gimbal body and gimbal body has been improved.

2. The utility model discloses a set up ring internal orifice, first blade chute, second blade chute and ring groove, because the design of ring internal orifice, first blade chute, second blade chute and ring groove will have reduced the friction area between first friction surface and the second friction surface, when hugging closely between first friction surface and the second friction surface, will reduce the frictional force between first friction surface and the second friction surface, improved the work efficiency of pump shaft body, consequently increased the device's practicality.

Drawings

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

fig. 2 is a schematic side view of the balance disc body of the present invention;

FIG. 3 is a schematic side view of the balance ring body of the present invention;

fig. 4 is a schematic cross-sectional structural view of the balance disc body and the balance ring body of the present invention.

In the figure: 1. a pump body; 2. a rear bearing body; 3. a tail cover; 4. a liquid inlet; 5. a liquid discharge port; 6. an impeller; 7. a balance disc body; 8. a gimbal body; 9. a balance sleeve; 10. a first friction face; 11. an inner opening of the circular ring; 12. a first blade chute; 13. a second friction face; 14. a second blade chute; 15. a circular groove; 16. a pump shaft body; 17. a first bearing; 18. a pump coupling; 19. a second bearing; 20. a front bearing body; 21. and (4) end covers.

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.

As shown in FIGS. 1 to 4, the utility model provides a novel horizontal multi-stage pump axial force balancing device, which comprises a pump body 1, wherein the right side of the pump body 1 is communicated with a rear bearing body 2 through bolts, the pump body 1 comprises a suction section, a middle section and a discharge section, a tail cover 3 is movably sleeved in the right end of the rear bearing body 2, the right side of the tail cover 3 is positioned outside the rear bearing body 2, the tail cover 3 is fixedly connected with the rear bearing body 2 through bolts, the left side of the pump body 1 is communicated with a front bearing body 20 through bolts, an end cover 21 is movably sleeved in the left end of the front bearing body 20, the left end of the end cover 21 is positioned outside the front bearing body 20, the front bearing body 20 is fixedly connected with the end cover 21 through bolts, a pump shaft body 16 is movably sleeved in the pump body 1, the left end of the pump shaft body 16 runs through the end cover 21 and extends to the outside of the end cover 21 and is fixedly sleeved with a pump coupling 18, the right end of the pump shaft body 16 penetrates through the tail cover 3 and extends into the tail cover 3, the left side of the top of the pump body 1 is fixedly communicated with a liquid inlet 4, the right side of the top of the pump body 1 is fixedly communicated with a liquid outlet 5, the outer surface of the pump shaft body 16 is fixedly sleeved with an impeller 6 positioned between the liquid inlet 4 and the liquid outlet 5, the outer surface of the pump shaft body 16 is fixedly sleeved with a balance disc body 7 positioned on the right side of the liquid outlet 5 and inside the pump body 1, the inner wall of the pump body 1 is fixedly provided with a balance ring body 8 positioned on the left side of the balance disc body 7, the inner side of the balance ring body 8 is movably connected with the outer surface of the balance disc body 7, the right side of the balance ring body 8 is movably connected with the left side of the balance disc body 7, the inner wall of the pump body 1 is fixedly provided with a balance sleeve 9 positioned on the left side of the balance ring body 8, the inner wall of the balance sleeve 9 is movably connected with the outer surface of the balance disc body 7, the left side of the balance disc body 7 is provided with a first friction surface 10, the right side of compensating ring body 8 is equipped with second friction surface 13, ring internal orifice 11 has all been seted up to the inside of compensating ring body 7 and compensating ring body 8, ring groove 15 that is located ring internal orifice 11 outside has been seted up to the inside of compensating ring body 8, second blade chute 14 that is located ring groove 15 outside has been seted up to the inside of compensating ring body 8, second blade chute 14 communicates each other with ring groove 15, first blade chute 12 that is located ring internal orifice 11 outside has been seted up to the inside of first friction surface 10, ring internal orifice 11 communicates each other with first blade chute 12.

Wherein, the inside fixed mounting of end cover 21 has first bearing 17, and the inner wall of first bearing 17 cup joints with the outer surface fixed of pump shaft body 16 left end, because the design of first bearing 17, will make more smooth at the pivoted in-process of pump shaft body 16.

Wherein, the inside fixed mounting of tail-hood 3 has second bearing 19, and the inner wall of second bearing 19 cup joints with the outer fixed surface of pump shaft body 16 right-hand member, because the design of second bearing 19, will strengthen pump shaft body 16 pivoted smoothness nature.

Wherein, the number of the impellers 6 is three, the three impellers 6 have the same size, and the three impellers 6 have the same distance from each other, so that the working efficiency of the multistage pump can be enhanced due to the design of the three impellers 6.

Wherein, the inboard of compensating ring body 8 and compensating sleeve 9 is all smooth, and the right side of compensating sleeve 9 and the left side fixed connection of compensating ring body 8, because the inboard of compensating ring body 8 and compensating sleeve 9 is all smooth to make more smooth when pump shaft body 16 drives balance disk body 7 and rotates.

The utility model discloses a theory of operation and use flow: when the multistage pump operates, the pump shaft body 16 drives the impeller 6 and the balance disc body 7 to rotate, so that liquid is conveyed, in the process, the second blade chute 14 introduces liquid outside the balance ring body 8 into the balance ring body and finally enters the annular groove 15, the first blade chute 12 introduces liquid outside the balance disc body 7 into the balance ring body and finally mixes with the liquid inside the second blade chute 14 and the annular groove 15, so that lubrication is carried out between the first friction surface 10 and the second friction surface 13, the dry friction phenomenon is avoided, due to the design of the annular inner opening 11, the first blade chute 12, the second blade chute 14 and the annular groove 15, the friction area between the first friction surface 10 and the second friction surface 13 is reduced, when the first friction surface 10 and the second friction surface 13 are tightly attached, the friction between the first friction surface 10 and the second friction surface 13 is reduced, and the working efficiency of the pump shaft body 16 is improved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a novel horizontal multistage pump axial force balancing unit, includes the pump body (1), its characterized in that: the pump is characterized in that the right side of the pump body (1) is communicated with a rear bearing body (2) through bolts, a tail cover (3) is sleeved on the inner part of the right end of the rear bearing body (2) in a movable mode, the right side of the tail cover (3) is positioned outside the rear bearing body (2), the tail cover (3) is connected with the rear bearing body (2) through bolts in a fixed mode, a front bearing body (20) is communicated with the left side of the pump body (1) through bolts in a fixed mode, an end cover (21) is sleeved on the inner part of the left end of the front bearing body (20), the left end of the end cover (21) is positioned outside the front bearing body (20), the front bearing body (20) is connected with the end cover (21) through bolts in a fixed mode, a pump shaft body (16) is sleeved on the inner part of the pump body (1), the left end of the pump shaft body (16) penetrates through the end cover (21) and extends to the outer part of the end cover (21) and is fixedly sleeved with a pump (18), the pump shaft comprises a pump shaft body (16), a tail cover (3) and a liquid outlet (5), wherein the right end of the pump shaft body (16) penetrates through the tail cover (3) and extends into the tail cover (3), a liquid inlet (4) is fixedly communicated with the left side of the top of the pump body (1), the right side of the top of the pump body (1) is fixedly communicated with the liquid outlet (5), an impeller (6) positioned between the liquid inlet (4) and the liquid outlet (5) is fixedly sleeved on the outer surface of the pump shaft body (16), a balance disc body (7) positioned on the right side of the liquid outlet (5) and inside the pump body (1) is fixedly sleeved on the outer surface of the pump shaft body (16), a balance ring body (8) positioned on the left side of the balance disc body (7) is fixedly installed on the inner wall of the pump body (1), the inner side of the balance ring body (8) is movably connected with the outer surface of the balance disc body (7), the right side of the balance ring body (8) is movably connected with the left side of the balance disc body (7), the inner wall of the pump body (1) is fixedly provided with a balance sleeve (9) positioned on the left side of a balance ring body (8), the inner wall of the balance sleeve (9) is movably connected with the outer surface of the balance disc body (7), the left side of the balance disc body (7) is provided with a first friction surface (10), the right side of the balance ring body (8) is provided with a second friction surface (13), the balance disc body (7) and the balance ring body (8) are both provided with a circular ring inner opening (11), the balance ring body (8) is provided with a circular ring groove (15) positioned outside the circular ring inner opening (11), the balance ring body (8) is provided with a second vane chute (14) positioned outside the circular ring groove (15), the second vane chute (14) is communicated with the circular ring groove (15), the first vane chute (12) positioned outside the circular ring inner opening (11) is arranged inside the first friction surface (10), the inner opening (11) of the circular ring is communicated with the first blade chute (12).

2. The novel horizontal multistage pump axial force balancing device of claim 1, characterized in that: a first bearing (17) is fixedly mounted inside the end cover (21), and the inner wall of the first bearing (17) is fixedly sleeved on the outer surface of the left end of the pump shaft body (16).

3. The novel horizontal multistage pump axial force balancing device of claim 1, characterized in that: and a second bearing (19) is fixedly mounted inside the tail cover (3), and the inner wall of the second bearing (19) is fixedly sleeved on the outer surface of the right end of the pump shaft body (16).

4. The novel horizontal multistage pump axial force balancing device of claim 1, characterized in that: the number of the impellers (6) is three, the three impellers (6) are identical in size, and the distances between the three impellers (6) are identical.

5. The novel horizontal multistage pump axial force balancing device of claim 1, characterized in that: the inner sides of the balance ring body (8) and the balance sleeve (9) are smooth, and the right side of the balance sleeve (9) is fixedly connected with the left side of the balance ring body (8).