CN218670265U

CN218670265U - Suspension type pump rotor coupling

Info

Publication number: CN218670265U
Application number: CN202223411509.4U
Authority: CN
Inventors: 李猛; 张海涛; 王达宇; 李晋彪; 王彦光; 许光; 赵士杰
Original assignee: Hebei Datang International Tangshan Beijiao Thermal Power Co ltd
Current assignee: Hebei Datang International Tangshan Beijiao Thermal Power Co ltd
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-03-21
Anticipated expiration: 2032-12-20

Abstract

The utility model relates to the technical field of couplings, in particular to a suspension type pump rotor coupling, which comprises an upper back wheel tightly connected with a motor shaft, a locknut fixedly connected with a shaft shoulder of the motor shaft and a lower back wheel connected with a pump shaft, wherein the locknut is provided with a plurality of locking holes based on central shaft symmetry, the locking holes are provided with jackscrews, and a plurality of layers of flat washers are arranged between the jackscrews and the locknut; the lower end of the jackscrew is screwed and fastened with the locknut, and the upper end of the jackscrew is tightly attached and abutted with the upper back wheel; the utility model discloses a jackscrew structure continues to promote the take-up pulley and a body structure thereof take the altitude, and the plain washer increases and decreases according to actual need, makes the impeller of pump rotor lower extreme can continue to promote the height under the condition that adjusting nut adjusted the limit, solves the problem that impeller and impeller chamber clearance are not enough, guarantees equipment safety.

Description

Suspension type pump rotor coupling

Technical Field

The utility model relates to a shaft coupling technical field especially relates to a suspension type pump rotor shaft coupling.

Background

The coupling is also called as a back wheel and is a common connecting piece used for connecting a driving shaft and a driven shaft in different mechanisms, the coupling comprises an upper back wheel and a lower back wheel, a power machine is generally connected with a working machine by means of a connecting shaft, for example, a water pump is connected with a motor, referring to figure 1, the lower end of a pump shaft is fixedly connected with an impeller, and the impeller is arranged in an impeller chamber; the upper end of the pump shaft is sleeved with a lower back wheel which is fixedly connected with an upper back wheel, the upper back wheel is arranged on a motor shaft, and the connection mode of the water pump and the back wheel of the motor is suspension type rigid connection. The position of a motor shaft is fixed, a locking nut is arranged at the lower end of the motor shaft, the diameter of the locking nut is larger than that of a central hole of an upper back wheel, and the upper back wheel is connected with a lower back wheel into a whole, so that the lower back wheel, a pump shaft and an impeller are actually hung on the motor shaft by utilizing the upper back wheel, and the connection form of the upper rotating shaft and the lower rotating shaft is called as a suspension type rigid connection structure.

When the device is installed, the pump shaft and the impeller are connected, the impeller is placed in the impeller chamber, then the pump shaft and the motor shaft are aligned, the height of the pump rotor is adjusted in advance through the adjusting nut, and then the upper back wheel (the motor back wheel), the adjusting nut and the lower back wheel (the pump back wheel) are connected and fixed through the fastening screw rod.

When the water pump is installed, the axial displacement of the water pump impeller needs to be measured and adjusted, and the axial displacement of each impeller needs to be measured. The impeller should be mounted in a semi-channeling position, which is usually adjusted by adjusting nuts on the top of the pump rotor. However, due to assembly errors, such as errors in the fixed position of a motor, the position of a motor shaft is too low, and the problem of installation of an impeller chamber can also be caused, many factors or combination of factors can lead to the situation that the adjustment stroke of an adjustment nut is not enough to lift and position an impeller to a half-channeling position, the gap between the impeller and the impeller chamber is not enough, if sediment in a medium is more, the medium is filled between the impeller and the impeller chamber, so that the moving and static parts are easily scratched, and even the damage of equipment parts is caused. The prior art finds that the condition can only be checked for various factors, and the problems are solved one by one, so that the workload is very large.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above problem to provide a can adjust pump rotor and impeller mounting height's coupling structure according to the condition.

The utility model provides a problem, the technical scheme who adopts is:

a suspension type pump rotor coupling comprises an upper back wheel tightly connected with a motor shaft, a locknut fixedly connected with a shaft shoulder of the motor shaft and a lower back wheel connected with a pump shaft, wherein a plurality of locking holes are symmetrically arranged on the locknut based on a central shaft, jackscrews are arranged in the locking holes, and a plurality of layers of flat washers are arranged between the jackscrews and the locknut; the lower end of the jackscrew is screwed and fastened with the locknut, and the upper end of the jackscrew is tightly attached and abutted with the upper back wheel.

Adopt above-mentioned technical scheme the utility model discloses, compare with prior art, its outstanding characteristics are:

the utility model discloses a jackscrew structure continues to promote the take-up pulley and a body structure thereof take the altitude, and the plain washer increases and decreases according to actual need, makes the impeller of pump rotor lower extreme can continue to promote the height under the condition that adjusting nut adjusted the limit, solves the problem that impeller and impeller chamber clearance are not enough, guarantees equipment safety.

Preferably, the present invention further provides:

the locking hole is an internal thread through hole, and a thread locking agent is additionally arranged between the jackscrew and the locking hole; prevent that the jackscrew from rocking and leading to its not hard up, avoid the jackscrew not hard up back of the body wheel of wearing and tearing.

The number of the locking holes is more than or equal to 2 and the locking holes are uniformly arranged; the balance of the jacking force is ensured, and the inclination of the locknut is prevented.

Drawings

FIG. 1 is a schematic view of a prior art suspension pump rotor coupling;

fig. 2 is a schematic view of a suspension pump rotor coupling according to an embodiment of the present invention;

FIG. 3 is a schematic view of the connection structure of the jackscrew according to the embodiment of the present invention;

fig. 4 is a schematic view of another connection structure of the jackscrew according to the embodiment of the present invention;

fig. 5 is a schematic top view of an adjusting nut and a locknut according to an embodiment of the present invention;

fig. 6 is the mounting structure schematic diagram of locknut in the embodiment of the utility model

FIG. 7 is a schematic view of a connection structure of a flat washer and a jackscrew according to an embodiment of the present invention;

fig. 8 is a schematic view of the overall structure in the embodiment of the present invention.

In the figure: 1. a motor shaft; 2. a pump shaft; 3. an upper back wheel; 4. a lower back wheel; 5. adjusting the nut; 6. a locknut; 601. a locking hole; 7. carrying out top thread; 8. a flat washer; 9. an impeller; 10. an impeller chamber.

Detailed Description

The present invention will be further described with reference to the following embodiments, and the structure in the embodiment and the attached drawings mentioned in the description is only one of the embodiments of the present invention, and does not limit the protection scope of the present invention.

For solving the problem among the prior art, to existing pump rotor structure, pump shaft and motor shaft connection structure research analysis, discover, locknut fastens on the motor shaft shoulder, the last back of the body wheel falls on locknut, last back of the body wheel and locknut butt cooperation, the butt face height has decided the last back of the body wheel height, influence the high position of pump rotor and impeller simultaneously, consequently, the axial displacement volume of pump rotor is except adjusting through adjusting nut, still probably through the butt face position adjustment of last back of the body wheel with locknut.

The utility model discloses a solve the technical means that current problem provided:

referring to fig. 2 to 8, the present invention provides a suspension type pump rotor coupling, a shaft shoulder of a motor shaft 1 is fixedly connected with a locknut 6, and the upper back wheel 3 is connected to the motor shaft 1 on the locknut 6 by tightening force; the upper end of the pump shaft 2 is connected with a lower back wheel 4, the lower end of the pump shaft is fixedly connected with an impeller 9, and the impeller 9 is arranged in an impeller chamber 10. The utility model discloses the improvement lies in, has seted up a plurality of locking holes 601 on locknut 6, and a plurality of locking holes 601 are the symmetry setting based on motor shaft 1's center pin, are provided with jackscrew 7 in the

locking hole

601, and 7 lower extremes of jackscrew and locknut 6 fastening, butt in the recess of last back of the body wheel 3, lower extreme and 6 fixed connection of locknut are hugged closely to the upper end. Specifically, the jackscrew is in threaded fit with the locknut, and a plurality of flat washers 8 are arranged between the jackscrew 7 and the locknut 6. The number of the flat washers 8 is adjusted according to the size of the gap between the impeller 9 and the impeller chamber 10.

Example (b): the lower end of the jackscrew 7 is flush with the lower end face of the locknut 6 (as shown in fig. 3) or is positioned in a locking hole 601 of the locknut 6 (as shown in fig. 4).

Example (b): the locking hole 601 is an internal thread through hole, and a thread locking agent is additionally arranged between the jackscrew 7 and the locking hole 601.

Example (b): referring to fig. 3, the flat washer 8 is a small flat washer concentric with the top thread 7.

Example (b): the flat washer 8 may also be a large-sized flat washer concentric with the locknut 6. The multilayer flat washer 8 can also play a role in buffering, and abrasion between the jackscrew 7 and the locknut 6 is reduced.

In order to ensure the balance of the jacking force between the locknut 6 and the upper back wheel 3 and avoid the locknut 6 from inclining, the number of the locking holes 601 is more than or equal to 2, and the uniform distribution is ensured, meanwhile, the number of the connecting bolts of the adjusting nut 5 and the upper back wheel 3 is more than or equal to 4, and the specific number is selected according to the size of the adjusting nut 5.

When the shaft coupling is connected, the upper back wheel 3 is connected to the motor shaft 1, and the lower back wheel 4 is connected to the pump shaft 2; according to the difference between the actual distance between the impeller 9 and the impeller chamber 10 and the design distance, a plurality of flat washers 8 are adhered to the locking hole 601, 2-3 drops of thread locking agent are dripped on the jackscrew 7, the jackscrew 7 is screwed into the locking hole 601 of the locknut 6, the locknut 6 is connected to the motor shaft 1, the upper end of the jackscrew 7 can be tightly propped against the limiting groove of the upper back wheel 3, and finally the upper back wheel 3, the adjusting nut 5 and the lower back wheel 4 are connected and fixed by using connecting bolts.

The utility model discloses an install the jackscrew additional in locknut 6 and last dorsal wheel cooperation position, realize the adjustment of last dorsal wheel high position, simple structure, simple to operate, implementation cost are low. The upper back wheel is adjustable in position, so that the gap between the impeller and the impeller chamber can be adjusted, the moving part and the static part of the impeller chamber are prevented from being worn, and the impeller is prevented from being damaged.

The above description is only a preferred and practical embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent variations made by using the contents of the specification and the drawings are included in the scope of the present invention.

Claims

1. The utility model provides a suspension type pump rotor coupling, includes the last back of the body wheel of being connected with the tight power of motor shaft, with the lock nut of motor shaft shoulder rigid coupling and the lower back of the body wheel of being connected with the pump shaft, its characterized in that: the locknut is symmetrically provided with a plurality of locking holes based on the central shaft, jackscrews are arranged in the locking holes, and a plurality of layers of flat washers are arranged between the jackscrews and the locknut; the lower end of the jackscrew is screwed and fastened with the locknut, and the upper end of the jackscrew is tightly attached and abutted with the upper back wheel.

2. A suspended pump rotor coupling as set forth in claim 1, wherein: the locking hole is an internal thread through hole, and a thread locking agent is additionally arranged between the jackscrew and the locking hole.

3. A suspended pump rotor coupling as set forth in claim 1, wherein: the quantity of locking hole is more than or equal to 2, evenly sets up.