CN218717666U

CN218717666U - Full rolling bearing vertical pump

Info

Publication number: CN218717666U
Application number: CN202223134004.8U
Authority: CN
Inventors: 甘根喜; 徐祖洪
Original assignee: Wuhan Sanyuan Pump Manufacturing Co ltd
Current assignee: Wuhan Sanyuan Pump Manufacturing Co ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-03-24
Anticipated expiration: 2032-11-25

Abstract

The utility model discloses a full antifriction bearing vertical pump, it includes the outer tube, the inner tube, the apparatus further comprises a rotating shaft, divertor and impeller, the pivot is passed from the inner tube center, outer tube and inner tube comprise a plurality of pipeline sections, be fixed with the bearing bracket between two adjacent outer tube pipe sections, the bearing bracket internal fixation has antifriction bearing, both ends pass a bearing bracket that corresponds respectively about the pivot respectively and with the inner circle interference fit of rolling bearing in the bearing bracket, the pivot upper end passes behind a antifriction bearing of top through first fan-shaped coupling and last transmission shaft lower extreme fixed connection, the pivot lower extreme passes behind a antifriction bearing of below through fan-shaped coupling of second and lower transmission shaft upper end fixed connection, the bearing seal spare normal running fit that prevents that medium water from upwards getting into the inner tube that sets up in lower transmission shaft and the divertor. The advantage does, and whole antifriction bearing that use leads and radial spacing to the pivot, makes the pivot have better axiality and keep vertical state, and it is more steady to make the pump operation.

Description

Full rolling bearing vertical pump

Technical Field

The utility model belongs to the vertical pump field, concretely relates to full antifriction bearing vertical pump.

Background

The existing vertical pump (especially the vertical long shaft pump) usually sleeves a rubber bearing on each shaft section of a rotating shaft to be in rotating fit with the shaft and perform radial limiting, so that the perpendicularity and the coaxiality of the shaft are ensured, and the shaft is ensured to be as small as possible during operation and does not generate radial run-out. However, since the rubber bearing is not a rigid part and the rubber sleeve therein has a certain degree of radial compressibility, the guiding and limiting effects on the shaft can only meet basic requirements, and for special occasions requiring high coaxial precision, stable running height to ensure long service life, long maintenance period and low failure rate of the pump, the long-shaft pump using the rubber bearing as a node guiding and limiting part can not meet the requirements.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a full antifriction bearing vertical pump aims at overcoming the current vertical pump that uses rubber bearing to lead spacing part as the node and can't satisfy high coaxial precision, high operation stationarity and long service life high performance requirement not enough.

The utility model provides an above-mentioned technical problem's technical scheme as follows: the utility model provides a full antifriction bearing vertical pump, its includes outer tube, inner tube, pivot, divertor and impeller, the inner tube is located the outer tube is just coaxial, the pivot is followed the inner tube center is passed, outer tube and inner tube are constituteed by a plurality of pipeline sections, are fixed with the bearing bracket between two adjacent outer tube pipe sections, and two adjacent inner tube pipe sections pass through the bearing bracket is connected, the bearing bracket internal fixation has antifriction bearing, both ends pass a correspondence respectively about the pivot the bearing bracket and with in the bearing bracket antifriction bearing's inner circle interference fit, the pivot upper end passes the top one pass through first fan-shaped coupling and last transmission shaft lower extreme fixed connection behind the antifriction bearing, the pivot lower extreme passes the below one pass behind the antifriction bearing through second fan-shaped coupling and lower transmission shaft upper end fixed connection, the lower transmission shaft pass behind the divertor with impeller fixed connection, the lower transmission shaft with set up in the divertor prevent that medium water from upwards getting into the bearing seal spare normal running fit of inner tube.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Furthermore, the bearing sealing element comprises a first fixing sleeve fixed in the inner cavity of the fluid director, a sealing sleeve is fixed at the lower end of the inner cavity of the first fixing sleeve, two J-shaped sealing rings which are stacked up and down are arranged in the sealing sleeve, and the mounting directions of the two J-shaped sealing rings are opposite.

Furthermore, two tapered roller bearings are arranged on the upper portion of the inner cavity of the first fixing sleeve, the thin end faces of the two tapered roller bearings are abutted tightly, the end face of the inner ring at the thick end of the tapered roller bearing, which is positioned above, is abutted tightly against an annular step face arranged on the lower transmission shaft, and the end face of the outer ring at the thick end of the tapered roller bearing, which is positioned below, is abutted tightly against the upper end face of the sealing sleeve.

Further, a shaft sleeve is sleeved on the lower transmission shaft, the outer side wall of the shaft sleeve is tightly abutted and sealed with the two J-shaped sealing rings, and the upper end face of the shaft sleeve is tightly abutted with the end face of the inner ring of the tapered roller bearing above the shaft sleeve.

Furthermore, the upper end and the lower end which are close to the first fan-shaped coupling are respectively provided with one bearing frame, and the two bearing frames are internally and correspondingly provided with the rolling bearings.

Furthermore, the upper end and the lower end of the second fan-shaped coupling joint are respectively provided with one bearing frame, and the two bearing frames are correspondingly provided with the rolling bearings.

Further, antifriction bearing is the cylindrical roller bearing, the bearing bracket includes the fixed cover of second, antifriction bearing install in the fixed cover middle part of second, the upper and lower both ends department of the fixed cover of second all is equipped with and prevents that water from getting into antifriction bearing's J type sealing washer.

Further, first fan-shaped shaft coupling and second fan-shaped shaft coupling all include upper and lower two shaft coupling blocks of mutually supporting respectively, every all have fan-shaped lug and fan-shaped recess on the shaft coupling block, one the shaft coupling block fan-shaped lug can block into another just in the shaft coupling block in the fan-shaped recess.

Compared with the prior art, the utility model discloses a technological effect and advantage do:

the rotating shaft is guided and radially limited by the rolling bearing in the bearing frame, so that the rotating shaft, the upper transmission shaft, the lower transmission shaft and the like connected with the upper end and the lower end of the rotating shaft have better coaxiality, the rotating shaft is ensured to be kept in a vertical state better, and the pump is more stable in operation; the rolling bearing is provided with an inner ring and an outer ring, and can better release radial stress, so that the adverse effect of the radial change of the expansion with heat and contraction with cold of the rotating shaft on the stable operation of the pump is eliminated; the fluid director is in running fit with the lower transmission shaft through the bearing sealing element, so that medium water is prevented from entering the inner pipe, and abrasion to the transmission shaft after impurities in the medium water enter the inner pipe is effectively avoided. In addition, the first fan-shaped coupling and the second fan-shaped coupling are used, so that the installation or the disassembly is more convenient during maintenance, and the efficiency is higher.

Drawings

Fig. 1 is a schematic structural view of a full rolling bearing vertical pump provided by the present invention;

FIG. 2 is an enlarged view of circle A in FIG. 1;

fig. 3 is an enlarged schematic view of a circle B in fig. 1.

In the drawings, the components represented by the respective reference numerals are listed below:

1. an outer tube; 2. an inner tube; 3. a rotating shaft; 4. a fluid director; 5. an impeller; 6. a bearing bracket; 7. a rolling bearing; 8. a first fan-shaped coupling; 9. an upper transmission shaft; 10. a second fan-shaped coupling; 11. a lower transmission shaft; 12. a first fixing sleeve; 13. sealing sleeves; 14. a J-shaped seal ring; 15. a tapered roller bearing; 16. a shaft sleeve.

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 efforts all belong to the protection scope of the present invention.

In the description of the present invention, if terms indicating orientation such as "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc. are used, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 3, the utility model provides a full antifriction bearing vertical pump, it includes outer tube 1, inner tube 2, pivot 3, divertor 4 and impeller 5, inner tube 2 is located outer tube 1 is interior and coaxial, pivot 3 is followed 2 centers of inner tube pass, outer tube 1 and inner tube 2 constitute by a plurality of pipeline sections, are fixed with bearing bracket 6 between two adjacent outer tube 1 pipeline sections, and two adjacent 2 pipeline sections of inner tube pass through bearing bracket 6 is connected, bearing bracket 6 internal fixation has antifriction bearing 7, 3 upper and lower both ends of pivot pass one respectively correspond bearing bracket 6 and with in the bearing bracket 6 the inner circle interference fit of antifriction bearing 7, 3 upper ends of pivot pass one after antifriction bearing 7 through first fan-shaped coupling 8 and last transmission shaft 9 lower extreme fixed connection, 3 lower extremes of pivot pass one below behind antifriction bearing 7 through second fan-shaped coupling 10 and lower transmission shaft 11 upper end fixed connection, lower transmission shaft 11 pass behind 4 with impeller 5 fixed connection, lower transmission shaft 11 with set up the water medium that the divertor got into 4 in the water seal spare prevents the water seal spare 2 rotating.

The upper and lower transmission shafts may be considered as a part of the rotation shaft, or may be considered as a structure that is specially provided to connect the rotation shaft with the upper motor and the lower impeller and is different from the rotation shaft. The rotating shaft 3 may be a whole section as shown in fig. 1, and the shaft length of the vertical pump is not a long shaft pump in the conventional sense, and if necessary, the rotating shaft 3 may also be fixed into a shaft by a plurality of shaft sections with the same length through fan-shaped shaft couplings, so as to form a long shaft pump.

In an embodiment of the present invention, as shown in fig. 3, the bearing sealing member includes a first fixing sleeve 12 fixed in the inner cavity of the fluid director 4, a sealing sleeve 13 is fixed at the lower end of the inner cavity of the first fixing sleeve 12, two J-shaped sealing rings 14 stacked up and down are arranged in the sealing sleeve 13, and the mounting directions of the J-shaped sealing rings 14 are opposite.

It should be noted that, J type sealing washer is the product of selling, but single use usually, the utility model discloses a two installation of J type sealing washer opposite direction and range upon range of placing can play better sealed effect relatively, avoid medium water to get into in the first fixed cover through the clearance between pivot and the seal cover to avoid medium water to produce direct wearing and tearing or produce adverse effect to the lubricating grease etc. of the bearing spare of installation in the first fixed cover to the axle of rotating.

In an embodiment of the present invention, the upper portion of the inner cavity of the first fixing sleeve 12 is provided with two tapered roller bearings 15, two the thin end face of the tapered roller bearing 15 abuts tightly, the upper portion of the inner ring face of the thick end of the tapered roller bearing 15 abuts tightly against the annular step face arranged on the lower transmission shaft 11, and the lower portion of the inner ring face of the thick end of the tapered roller bearing 15 abuts tightly against the upper end face of the sealing sleeve 13.

In an embodiment of the present invention, the lower transmission shaft 11 is sleeved with a shaft sleeve 16, the outer side wall of the shaft sleeve 16 abuts against the J-shaped seal ring 14 for tight sealing, and the upper end surface of the shaft sleeve 16 abuts against the inner ring end surface of the tapered roller bearing 15.

It can be understood that the gap between the shaft and the sealing sleeve can be further reduced by arranging the shaft sleeve, and the shaft sleeve can effectively protect the rotating shaft and avoid the abrasion of the rotating shaft.

In an embodiment of the present invention, as shown in fig. 1, one of the bearing frames 6 is disposed adjacent to each of the upper and lower ends of the first fan coupling 8, and the rolling bearings 7 are correspondingly disposed in both of the bearing frames 6. The upper end and the lower end of the second fan-shaped coupling 10 are respectively provided with one bearing frame 6, and the two bearing frames 6 are correspondingly provided with the rolling bearings 7.

It should be noted that, two bearing frames with built-in rolling bearings are respectively arranged at two ends of the first fan-shaped shaft coupling and the second fan-shaped shaft coupling at the upper end and the lower end of the rotating shaft, so that the rotating shaft can be better guided and radially limited, radial jumping possibly generated during rotation of the rotating shaft is avoided, and the pump transportation is more stable.

In an embodiment of the present invention, the rolling bearing 7 is a cylindrical roller bearing, the bearing frame 6 includes a second fixing sleeve, the rolling bearing 7 is installed in the middle of the second fixing sleeve, and the upper and lower ends of the second fixing sleeve are both provided with a J-shaped sealing ring 14 for preventing water from entering the rolling bearing 7. In order to reduce friction during rotation and avoid leakage of grease, the two ends of the second fixing sleeve are provided with sealing structures for preventing water from entering, the sealing structures comprise J-shaped sealing rings and related fitting mounting components, as shown in fig. 2.

In an embodiment of the present invention, the first fan-shaped coupling 8 and the second fan-shaped coupling 10 respectively include two upper and lower coupling blocks that are engaged with each other, each of which has a fan-shaped protrusion and a fan-shaped groove, one of which can be just clamped into the other of the coupling blocks. Specifically, take the first fan-shaped coupling of top as an example, two coupling blocks that it includes, one is fixed in last transmission shaft lower extreme, and another is fixed in the upper end of pivot, and during the assembly with specific angle along the axial near each other make the fan-shaped lug on one coupling block terminal surface block go into in the fan-shaped recess on another coupling block, the coupling block uses hard material to make, including stainless steel, the higher plastics of intensity etc..

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions on some technical features, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a full antifriction bearing vertical pump, its characterized in that, includes outer tube (1), inner tube (2), pivot (3), divertor (4) and impeller (5), inner tube (2) are located outer tube (1) is just coaxial, pivot (3) are followed inner tube (2) center is passed, outer tube (1) and inner tube (2) are constituteed by a plurality of pipeline sections, are fixed with bearing bracket (6) between two adjacent outer tube (1) pipeline sections, and two adjacent inner tube (2) pipeline sections pass through bearing bracket (6) are connected, bearing bracket (6) internal fixation has antifriction bearing (7), both ends pass one respectively about pivot (3) and correspond bearing bracket (6) and with in bearing bracket (6) the inner circle cooperation of antifriction bearing (7), pivot (3) upper end is passed one behind antifriction bearing (7) through first fan-shaped coupling (8) and last transmission shaft (9) lower extreme fixed connection, pivot (3) lower extreme pass one behind antifriction bearing (7) through second fan-shaped coupling (10) and impeller (11) fixed connection impeller (11) lower extreme) are connected to impeller (11) the fixed connection under antifriction bearing (11) the transmission shaft (7) the lower extreme of bearing (11) the impeller (11) are connected to the impeller (11) the lower extreme that sets up the transmission shaft (11) and impeller (11) the transmission shaft (11) is connected to the impeller (11) and impeller (4) to the impeller (11) is connected to the upper end The bearing seal of the inner tube (2) is rotationally fitted.

2. A full rolling bearing vertical pump according to claim 1, wherein the bearing sealing member comprises a first fixing sleeve (12) fixed in the inner cavity of the fluid director (4), a sealing sleeve (13) is fixed at the lower end of the inner cavity of the first fixing sleeve (12), two J-shaped sealing rings (14) are arranged in the sealing sleeve (13) in a vertically stacked manner, and the mounting directions of the two J-shaped sealing rings (14) are opposite.

3. The vertical pump with the full rolling bearing according to claim 2, characterized in that two tapered roller bearings (15) are arranged at the upper part of the inner cavity of the first fixing sleeve (12), the end faces of the thin ends of the two tapered roller bearings (15) abut tightly, the end face of the inner ring of the thick end of the tapered roller bearing (15) positioned at the upper part abuts tightly against the annular step surface arranged on the lower transmission shaft (11), and the end face of the outer ring of the thick end of the tapered roller bearing (15) positioned at the lower part abuts tightly against the upper end surface of the sealing sleeve (13).

4. A vertical pump with full rolling bearing according to claim 3, characterized in that the lower transmission shaft (11) is sleeved with a shaft sleeve (16), the outer side wall of the shaft sleeve (16) is tightly pressed against and sealed with the two J-shaped sealing rings (14), and the upper end surface of the shaft sleeve (16) is tightly pressed against the inner ring end surface of the tapered roller bearing (15) above the shaft sleeve.

5. A full rolling bearing vertical pump according to claim 1, characterized in that the upper and lower ends of the first fan-shaped coupling (8) are respectively provided with one bearing bracket (6), and the two bearing brackets (6) are respectively and correspondingly provided with the rolling bearings (7).

6. A full rolling bearing vertical pump according to claim 5, characterized in that the upper and lower ends of the second fan-shaped coupling (10) are respectively provided with one bearing bracket (6), and the rolling bearings (7) are correspondingly arranged in the two bearing brackets (6).

7. A full rolling bearing vertical pump according to any one of claims 1 to 6, characterized in that the rolling bearing (7) is a cylindrical roller bearing, the bearing bracket (6) comprises a second fixing sleeve, the rolling bearing (7) is installed in the middle of the second fixing sleeve, and J-shaped sealing rings (14) for preventing water from entering the rolling bearing (7) are arranged at the upper end and the lower end of the second fixing sleeve.

8. A full rolling bearing vertical pump according to claim 7, characterized in that the first sector coupling (8) and the second sector coupling (10) respectively comprise an upper coupling block and a lower coupling block which are matched with each other, each coupling block is provided with a sector convex block and a sector concave groove, and the sector convex block of one coupling block can be just clamped into the sector concave groove of the other coupling block.