CN210290237U

CN210290237U - Multistage pump shaft

Info

Publication number: CN210290237U
Application number: CN201921242988.7U
Authority: CN
Inventors: 张冲
Original assignee: Chongqing Oupeisen Technology Co Ltd
Current assignee: Chongqing Oupeisen Technology Co Ltd
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2020-04-10
Anticipated expiration: 2029-08-02

Abstract

The utility model discloses a multistage pump shaft, including first pump shaft, one side of first pump shaft is provided with the second pump shaft, and one side of second pump shaft is provided with the third pump shaft, one side of third pump shaft is provided with the fourth pump shaft, first pump shaft is fixed with the bearing through lock nut with one side of fourth pump shaft, and the intermediate position department in the fourth pump shaft outside is provided with the balance disk, belongs to the pump field. The utility model discloses a divide into first pump shaft with the pump shaft, the second pump shaft, third pump shaft and fourth pump shaft, cooperate with the slot through the picture peg that sets up and make first pump shaft, the second pump shaft, the third pump shaft is connected with the fourth pump shaft, cooperate with the draw-in groove through the dop that sets up, accomplish first pump shaft, the second pump shaft, the third pump shaft is fixed with the fourth pump shaft, its installation of being convenient for simultaneously is dismantled, when one of them section pump shaft distortion, extract the slot with the picture peg and change the pump shaft of damage, perhaps when the impeller damages, be convenient for change the impeller, and then greatly increased maintenance speed.

Description

Multistage pump shaft

Technical Field

The utility model relates to a pump field specifically is a multistage pump shaft.

Background

The pump is a machine for conveying fluid or pressurizing fluid, and transfers the mechanical energy of prime mover or other external energy to liquid to increase the energy of liquid, the pump is mainly used for conveying liquid such as water, oil, acid-base liquid, emulsion, suspoemulsion and liquid metal, and can also convey liquid, gas mixture and liquid containing suspended solid, the pump can be generally divided into three types of volumetric pump, power pump and other types of pumps according to working principle, besides the classification according to working principle, the pump can also be classified and named according to other methods, for example, the pump can be divided into electric pump and water wheel pump according to driving method; can be divided into a single-stage pump and a multi-stage pump according to the structure; can be divided into a boiler feed pump, a metering pump and the like according to the application; the pump can be divided into a water pump, an oil pump, a slurry pump and the like according to the property of conveying liquid, and can be divided into a linear pump according to a structure with or without a shaft and a traditional pump, wherein a pump shaft is one of the indispensable parts in the pump.

But present pump shaft, when live time is too long, impeller and pump shaft can produce the normal operating that damaged influence pump, and when the maintenance, need whole change pump shaft, cost of maintenance is great, and the step is comparatively complicated when changing moreover, influences the change rate.

Disclosure of Invention

The utility model aims to provide a: in order to solve present pump shaft, when live time is too long, impeller and pump shaft can produce the normal operating that the damage influences the pump, when the maintenance, need whole change pump shaft, and cost of maintenance is great, and the step is comparatively complicated when changing moreover, influences the problem of changing speed, provides a multistage pump shaft.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a multistage pump shaft, includes first pump shaft, one side of first pump shaft is provided with the second pump shaft, and one side of second pump shaft is provided with the third pump shaft, one side of third pump shaft is provided with the fourth pump shaft, one side of first pump shaft and fourth pump shaft is fixed with the bearing through lock nut, and the intermediate position department in the fourth pump shaft outside is provided with the balance disc, the outside of second pump shaft and third pump shaft all is provided with the impeller, one side of first pump shaft, second pump shaft and third pump shaft all is provided with the slot, and the inner wall of slot is provided with the draw-in groove, one side of second pump shaft, third pump shaft and fourth pump shaft all is provided with the picture peg with slot matched with, and the both ends of picture peg all are provided with the recess, and the internally mounted of recess has reset spring, and reset spring's end is provided with the card chuck with slot matched with, first pump shaft, second pump shaft, the outer sides of the second pump shaft, the third pump shaft and the fourth pump shaft are provided with shaft sleeves, and the outer sides of the second pump shaft and the third pump shaft are provided with shaft key grooves.

Preferably, the impeller is detachably connected with the shaft key groove through a key.

Preferably, the cross sections of the slot and the insertion plate are in a cross shape.

Preferably, the first pump shaft, the second pump shaft, the third pump shaft and the fourth pump shaft are all made of galvanized steel.

Preferably, the number of the shaft key grooves is two, and the included angle between the connecting line of the central points of the two groups of the shaft key grooves and the horizontal plane is thirty degrees.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a divide into first pump shaft with the pump shaft, the second pump shaft, third pump shaft and fourth pump shaft, cooperate with the slot through the picture peg that sets up and make first pump shaft, the second pump shaft, the third pump shaft is connected with the fourth pump shaft, dop and the draw-in groove through setting up cooperate, accomplish first pump shaft, the second pump shaft, the third pump shaft is fixed with the fourth pump shaft, its installation of being convenient for simultaneously is dismantled, when one of them section pump shaft distortion, extract the slot with the picture peg and change the pump shaft of damage, perhaps when the impeller damages, be convenient for change the impeller, and then greatly increased maintenance speed, cost of maintenance has been reduced simultaneously greatly.

Drawings

Fig. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is an enlarged view of A of the present invention;

fig. 3 is a top view of the board and slot combination of the present invention.

In the figure: 1. a first pump shaft; 2. a second pump shaft; 3. a third pump shaft; 4. a fourth pump shaft; 5. locking the nut; 6. a balance disc; 7. an impeller; 8. a shaft sleeve; 9. a bearing; 10. a shaft keyway; 11. a slot; 12. clamping a head; 13. a groove; 14. inserting plates; 15. a return spring; 16. a clamping groove.

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.

Referring to fig. 1-3, a multi-stage pump shaft includes a first pump shaft 1, a second pump shaft 2 is disposed at one side of the first pump shaft 1, a third pump shaft 3 is disposed at one side of the second pump shaft 2, a fourth pump shaft 4 is disposed at one side of the third pump shaft 3, a bearing 9 is fixed at one side of the first pump shaft 1 and one side of the fourth pump shaft 4 through a lock nut 5, a balance disc 6 is disposed at a middle position of an outer side of the fourth pump shaft 4, impellers 7 are disposed at outer sides of the second pump shaft 2 and the third pump shaft 3, slots 11 are disposed at one sides of the first pump shaft 1, the second pump shaft 2 and the third pump shaft 3, a clamping groove 16 is disposed at an inner wall of the slot 11, inserting plates 14 matched with the slots 11 are disposed at one sides of the second pump shaft 2, the third pump shaft 3 and the fourth pump shaft 4, grooves 13 are disposed at two ends of the inserting plates 14, and a return spring 15 is disposed, and the end of the reset spring 15 is provided with a clamping head 12 matched with the clamping groove 16, the outer sides of the first pump shaft 1, the second pump shaft 2, the third pump shaft 3 and the fourth pump shaft 4 are all provided with shaft sleeves 8, and the outer sides of the second pump shaft 2 and the third pump shaft 3 are all provided with shaft key grooves 10.

The utility model discloses divide into first pump shaft 1, second pump shaft 2, third pump shaft 3 and fourth pump shaft 4 with the pump shaft, cooperate with slot 11 through the picture peg 14 that sets up and make first pump shaft 1, second pump shaft 2, third pump shaft 3 be connected with fourth pump shaft 4, cooperate with draw-in groove 16 through dop 12 that sets up, accomplish first pump shaft 1, second pump shaft 2, third pump shaft 3 and fourth pump shaft 4 fixed, be convenient for its installation simultaneously and dismantle.

Please refer to fig. 1, the impeller 7 is detachably connected to the shaft key slots 10 through keys, the number of the shaft key slots 10 is two, and the included angle between the connecting line of the central points of the two sets of shaft key slots 10 and the horizontal plane is thirty degrees.

The multistage pump shaft is matched with the shaft key groove 10 through the arranged key, so that the impeller 7 can be conveniently mounted and dismounted, and the included angle between the connecting line of the central points of the arranged shaft key groove 10 and the horizontal plane is thirty degrees, so that the second pump shaft 2 and the third pump shaft 3 can rotate more stably.

Please refer to fig. 2 and 3, the cross-sections of the insertion groove 11 and the insertion plate 14 are cross-shaped, and the first pump shaft 1, the second pump shaft 2, the third pump shaft 3 and the fourth pump shaft 4 are made of galvanized steel.

The cross sections of the multistage pump shaft through the arranged slots 11 and the inserting plates 14 are in a cross shape, so that the transmission effect among the first pump shaft 1, the second pump shaft 2, the third pump shaft 3 and the fourth pump shaft 4 is better, and meanwhile, the corrosion resistance and hardness of the multistage pump shaft can be enhanced by galvanized steel.

The working principle is as follows: after the pump runs for a long time, a certain damage occurs at the pump shaft, the damaged position is checked, for example, when the second pump shaft 2 is damaged, the inserting plate 14 is pulled out of the inserting groove 11, meanwhile, the clamping head 12 leaves the inserting groove 16, the second pump shaft 2 is dismounted, then the impeller 7 is dismounted through a key, a new second pump shaft is replaced, when the impeller 7 is excessively worn, the new impeller 7 can be replaced, then the impeller 7 and the second pump shaft 2 are reset, the purpose of replacing the distorted pump shaft and the impeller 7 is completed, the clamping head 12 is pushed into the inserting groove 16 under the action of the reset spring 15, the second pump shaft 2 is fixed, the balance disc 6 is matched, the pump shaft rotates more stably, and the locking nut 5 is convenient for the bearing 9 to be fixed on the outer sides of the first pump shaft 1 and the fourth pump shaft 4, so that the rotating friction force of the pump shaft is reduced.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A multistage pump shaft, comprising a first pump shaft (1), characterized in that: a second pump shaft (2) is arranged on one side of the first pump shaft (1), a third pump shaft (3) is arranged on one side of the second pump shaft (2), a fourth pump shaft (4) is arranged on one side of the third pump shaft (3), a bearing (9) is fixed on one side of the first pump shaft (1) and one side of the fourth pump shaft (4) through a locknut (5), a balance disc (6) is arranged at the middle position of the outer side of the fourth pump shaft (4), impellers (7) are arranged on the outer sides of the second pump shaft (2) and the third pump shaft (3), slots (11) are formed in one sides of the first pump shaft (1), the second pump shaft (2) and the third pump shaft (3), clamping grooves (16) are formed in the inner wall of the slots (11), inserting plates (14) matched with the slots (11) are arranged on one sides of the second pump shaft (2), the third pump shaft (3) and the fourth pump shaft (4), and the both ends of picture peg (14) all are provided with recess (13), and the internally mounted of recess (13) has reset spring (15), and the end of reset spring (15) be provided with draw-in groove (16) matched with dop (12), the outside of first pump shaft (1), second pump shaft (2), third pump shaft (3) and fourth pump shaft (4) all is provided with axle sleeve (8), second pump shaft (2) all are provided with axle keyway (10) with the outside of third pump shaft (3).

2. The multi-stage pump shaft of claim 1, wherein: the impeller (7) is detachably connected with the shaft key groove (10) through a key.

3. The multi-stage pump shaft of claim 1, wherein: the cross sections of the slot (11) and the plug board (14) are in a cross shape.

4. The multi-stage pump shaft of claim 1, wherein: the first pump shaft (1), the second pump shaft (2), the third pump shaft (3) and the fourth pump shaft (4) are all made of galvanized steel.

5. The multi-stage pump shaft of claim 1, wherein: the number of the shaft key grooves (10) is two, and the included angle between the connecting line of the central points of the two groups of the shaft key grooves (10) and the horizontal plane is thirty degrees.