CN210531165U

CN210531165U - Multistage pump with pump shaft unloading device

Info

Publication number: CN210531165U
Application number: CN201921316707.8U
Authority: CN
Inventors: 张池
Original assignee: Huizhou Yuanli Industrial Co ltd
Current assignee: Huizhou Yuanli Industrial Co ltd
Priority date: 2019-08-14
Filing date: 2019-08-14
Publication date: 2020-05-15
Anticipated expiration: 2029-08-14

Abstract

The utility model discloses a multistage pump with pump shaft unloading device, which comprises an outer shell, the inside of shell is provided with impeller and guide vane, the inside of shell is rotated and is connected with one-level axis of rotation and second grade axis of rotation, the outer wall of one-level axis of rotation is provided with the blade, the inside of shell is provided with the connecting block, the inside fixed mounting of connecting block has two ball bearing, all be provided with the connecting axle in one-level axis of rotation and the second grade axis of rotation, and the connecting axle rotates the inside of connecting at two ball bearing, the welding of one side of shell has fixed cover. The utility model discloses can prevent that the axle center from taking place the skew when the axis of rotation rotates, improve the axis of rotation stability when rotating, reduce the frictional force between axis of rotation and the fixed cover, improve the smoothness nature of multistage pump when using, the quick drive axis of rotation of being convenient for rotates, has prevented the friction between the rotor that flexible deformation arouses and the pump body, has guaranteed the stationarity of multistage pump operation.

Description

Multistage pump with pump shaft unloading device

Technical Field

The utility model relates to a multistage pump technical field especially relates to a multistage pump with pump shaft unloading device.

Background

The device is suitable for mine, factory and city water supply and drainage, and is used for conveying clear water without solid particles or liquid with physical and chemical properties similar to clear water, the temperature of the conveyed medium is 0-80 ℃, and the allowable inlet pressure is 0.6 MPa.

The multistage pump with the pump shaft unloading device in the prior art cannot prevent the axle center from deviating when the rotating shaft rotates, the stability of the rotating shaft during rotation is relatively poor, the friction force between the rotating shaft and the fixed sleeve is relatively large, the smoothness of the multistage pump during use is low, the multistage pump is not convenient to rapidly drive the rotating shaft to rotate, the friction between a rotor and a pump body caused by flexible deformation is relatively large, and the running stability of the multistage pump is relatively poor.

Therefore, it is desirable to design a multistage pump having a pump shaft unloading device to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a multistage pump with a pump shaft unloading device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a multistage pump with a pump shaft unloading device comprises a shell, wherein an impeller and guide vanes are arranged inside the shell, a first-stage rotating shaft and a second-stage rotating shaft are connected inside the shell in a rotating mode, vanes are arranged on the outer wall of the first-stage rotating shaft, a connecting block is arranged inside the shell, double ball bearings are fixedly arranged inside the connecting block, connecting shafts are arranged on the first-stage rotating shaft and the second-stage rotating shaft respectively and are rotatably connected inside the double ball bearings, a fixing sleeve is welded on one side of the shell, two first bearings are fixedly arranged inside the fixing sleeve, two fixing rings are sleeved at one end of the second-stage rotating shaft and rotatably connected inside the first bearings, a rotating disc is arranged at one end, close to the second-stage rotating shaft, of the first-stage rotating shaft, a rotating groove is formed in one end, close, the inside welding that rotates the groove has the fixed separation blade that is annular equidistance and distributes, the surface of rolling disc is opened has the recess that is annular equidistance and distributes, one side of recess is rotated through the rotating pin and is connected with the movable block, fixed mounting has compression spring between movable block and the recess, one side of recess is provided with the baffle.

Furthermore, the rotating disc is rotatably connected in the rotating groove, and the second-stage rotating shaft is rotatably connected to one end of the first-stage rotating shaft through the matching of the rotating disc and the rotating groove.

Furthermore, one side of the shell is provided with a water inlet pipe, and the other side of the shell is provided with a water outlet pipe.

Furthermore, the outer wall of the first-level rotating shaft is sleeved with a counterweight plate, and the counterweight plate is positioned outside the shell.

Furthermore, a second bearing is arranged inside the secondary rotating shaft, and the rotating disc is rotatably connected inside the second bearing.

Furthermore, the top of the shell is provided with a lifting ring, and the lifting ring is positioned on the gravity center line of the multi-stage pump.

The utility model has the advantages that:

1. through the connecting axle and the two ball bearing that set up, the connecting axle sets up between two axis of rotation, then the two ball bearing of cooperation rotate to be connected on the connecting block, can prevent when the axis of rotation that the axle center from taking place the skew, improve the stability of axis of rotation when rotating.

2. Through the first bearing and the solid fixed ring that set up, through the cooperation between first bearing and the solid fixed ring, can prevent that the afterbody of multistage pump from taking place to rotate the axle center and taking place the skew rotation, reduce the frictional force between axis of rotation and the fixed cover, improved the smoothness nature of multistage pump when using.

3. Through the movable block and the fixed stop piece that set up, through the cooperation between movable block and the fixed stop piece, make and rotate earlier at the one-level axis of rotation, then drive the second grade axis of rotation and rotate, the quick messenger's axis of rotation of not only being convenient for rotates, can improve the stability when axis of rotation rotates moreover.

4. Through the counterweight plate that sets up, after the rotation of one-level axis of rotation operation, the counterweight plate can make the stable rotation of axis of rotation through the inertia of self, has prevented the friction between the rotor that flexible deformation arouses and the pump body, has guaranteed the stationarity of multistage pump operation.

Drawings

Fig. 1 is a schematic view of a partial cross-sectional structure of a multistage pump having a pump shaft unloading device according to the present invention;

fig. 2 is a schematic view of a structure of a rotating shaft of a multi-stage pump with a pump shaft unloading device according to the present invention;

fig. 3 is a schematic structural view of a rotating disk and a rotating groove of a multistage pump with a pump shaft unloading device according to the present invention;

fig. 4 is a schematic structural view of a fixed block piece and a movable block of a multistage pump with a pump shaft unloading device provided by the present invention.

In the figure: the device comprises a shell 1, a water inlet pipe 2, a water outlet pipe 3, an impeller 4, a guide vane 5, a vane 6, a connecting block 7, a primary rotating shaft 8, a counterweight plate 9, a connecting shaft 10, a double ball bearing 11, a secondary rotating shaft 12, a fixed sleeve 13, a fixed ring 14, a first bearing 15, a rotating plate 16, a second bearing 17, a rotating groove 18, a fixed blocking piece 19, a movable block 20, a groove 21, a compression spring 22, a baffle 23 and a lifting ring 24.

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.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, a multistage pump with a pump shaft unloading device includes a housing 1, an impeller 4 and a guide vane 5 are disposed inside the housing 1, the guide vane 5 guides water in the multistage pump, a first-stage rotating shaft 8 and a second-stage rotating shaft 12 are rotatably connected inside the housing 1, a vane 6 is disposed on an outer wall of the first-stage rotating shaft 8 to drive water to rapidly flow through the multistage pump, a connecting block 7 is disposed inside the housing 1 and used for fixedly mounting a double ball bearing 11, the double ball bearing 11 is fixedly mounted inside the connecting block 7 and can prevent an axis from shifting when the rotating shaft rotates, stability of the rotating shaft is improved, connecting shafts 10 are disposed on the first-stage rotating shaft 8 and the second-stage rotating shaft 12, the connecting shafts 10 are rotatably connected inside the double ball bearing 11, and a fixing sleeve 13 is welded on one side of the housing 1, two first bearings 15 are fixedly installed inside the fixed sleeve 13, two fixed rings 14 are sleeved at one end of the second-stage rotating shaft 12, the fixed rings 14 are rotatably connected inside the first bearings 15, the rotating axis of the tail part of the multistage pump can be prevented from deviating and rotating, the friction between the rotating shaft and the fixed sleeve 13 is reduced, a rotating disc 16 is arranged at one end of the first-stage rotating shaft 8 close to the second-stage rotating shaft 12, a rotating groove 18 is formed at one end of the second-stage rotating shaft 12 close to the first-stage rotating shaft 8, fixed blocking pieces 19 distributed in annular and equidistant mode are welded inside the rotating groove 18, the second-stage rotating shaft 12 can be driven to rotate by matching with the movable blocks 20, grooves 21 distributed in annular and equidistant mode are formed in the surface of the rotating disc 16, the movable blocks 20 can be enabled to completely rotate in the grooves 21, one side of each groove 21 is rotatably connected with a movable block 20 through a rotating pin, fixed mounting has compression spring 22 between movable block 20 and the recess 21, and one side of recess 21 is provided with baffle 23, and baffle 23 can be spacing to movable block 20, prevents that movable block 20 turned angle is great, and the influence drives second grade axis of rotation 12.

Further, the rotating disc 16 is rotatably connected in the rotating groove 18, and the secondary rotating shaft 12 is rotatably connected to one end of the primary rotating shaft 8 through the cooperation of the rotating disc 16 and the rotating groove 18.

Furthermore, one side of the shell 1 is provided with a water inlet pipe 2, water enters the multistage pump from the water inlet pipe 2 to be pressurized and then is discharged from a water outlet pipe 3, and the other side of the shell 1 is provided with a water outlet pipe 3.

Further, the outer wall of the first-stage rotating shaft 8 is sleeved with a counterweight plate 9, the counterweight plate 9 can enable the rotating shaft to stably rotate through inertia of the counterweight plate 9, and the counterweight plate 9 is located outside the shell 1.

Further, a second bearing 17 is provided inside the secondary rotary shaft 12, so that the friction force between the rotary disk 16 and the secondary rotary shaft 12 can be reduced, and the rotary disk 16 is rotatably connected inside the second bearing 17.

Furthermore, the top of the shell 1 is provided with a hanging ring 24, so that the multistage pump can be conveniently hoisted and moved, and the hanging ring 24 is positioned on the gravity center line of the multistage pump, so that the multistage pump is not laterally deviated when the multistage pump is hoisted.

The working principle is as follows: when the multistage pump is used, the multistage pump is placed at a designated position through the lifting ring 24, one end of the first-stage rotating shaft 8 is connected with the driving motor, the driving motor is started, the driving motor rotates to drive the first-stage rotating shaft 8 and the seed matching disc 9 to rotate, the counterweight disc 9 can enable the rotating shaft to stably rotate through self inertia, the first-stage rotating shaft 8 rotates to drive the double-ball bearing 11 on the connecting shaft 10 to rotate, the connecting shaft 10 is rotatably connected to the connecting block 7 in cooperation with the double-ball bearing 11, the shaft center can be prevented from being deviated when the rotating shaft 10 rotates, the stability of the rotating shaft 10 during rotation is improved, the rotating disc 16 at the rotating end of the first-stage rotating shaft 8 rotates, meanwhile, the rotating disc 16 rotates in the second bearing 17 inside one end of the second-stage rotating shaft 12, the second bearing 17 can not only stabilize the rotating disc 16, compression spring 22 on rolling disc 16 makes the perk of movable block 20 and fixed catch 19 joint together, baffle 23 is in the same place to the position restriction of movable block 20 simultaneously, thereby drive second grade axis of rotation 12 and rotate, solid fixed ring 14 of the other end of second grade axis of rotation 12 rotates and connects in first bearing 15, cooperation through between first bearing 15 and solid fixed ring 14, can prevent that the afterbody of multistage pump from taking place to rotate the axle center and taking place the skew rotation, reduce the frictional force between axis of rotation and the fixed cover 13, the smoothness nature of multistage pump when using has been improved, when one-level axis of rotation 8 rotates clockwise, movable block 20 on the rolling disc 16 receives the extrusion of fixed catch 19, make movable block 20 rotate in recess 21, compression spring 22 is compressed simultaneously, second grade axis of rotation 12 does not rotate.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a multistage pump with pump shaft unloading device, includes shell (1), its characterized in that, the inside of shell (1) is provided with impeller (4) and guide vane (5), the inside of shell (1) is rotated and is connected with one-level axis of rotation (8) and second grade axis of rotation (12), the outer wall of one-level axis of rotation (8) is provided with blade (6), the inside of shell (1) is provided with connecting block (7), the inside fixed mounting of connecting block (7) has two ball bearing (11), all be provided with connecting axle (10) on one-level axis of rotation (8) and second grade axis of rotation (12), and connecting axle (10) rotate and connect in the inside of two ball bearing (11), the welding of one side of shell (1) has fixed cover (13), the inside fixed mounting of fixed cover (13) has two first bearing (15), two solid fixed rings (14) have been cup jointed to the one end of second grade axis of rotation (12), and solid fixed ring (14) rotate to be connected in the inside of first bearing (15), and the one end that one-level axis of rotation (8) are close to second grade axis of rotation (12) is provided with rolling disc (16), the one end that second grade axis of rotation (12) are close to one-level axis of rotation (8) is opened and is had rotation groove (18), the inside welding that rotates groove (18) has fixed separation blade (19) that are annular equidistance and distribute, open on the surface of rolling disc (16) has recess (21) that are annular equidistance and distribute, one side of recess (21) is rotated through the rotating pin and is connected with movable block (20), fixed mounting has compression spring (22) between movable block (20) and recess (21), one side of recess (21).

2. The multi-stage pump with a pump shaft unloading device according to claim 1, wherein the rotating disc (16) is rotatably connected in the rotating groove (18), and the secondary rotating shaft (12) is rotatably connected to one end of the primary rotating shaft (8) through the matching of the rotating disc (16) and the rotating groove (18).

3. The multistage pump with pump shaft unloading device according to claim 1, characterized in that one side of the housing (1) is provided with a water inlet pipe (2) and the other side of the housing (1) is provided with a water outlet pipe (3).

4. The multistage pump with a pump shaft unloading device according to claim 1, wherein a weight plate (9) is sleeved on the outer wall of the primary rotating shaft (8), and the weight plate (9) is positioned outside the casing (1).

5. The multistage pump with pump shaft unloading device according to claim 1, characterized in that the inside of the secondary rotating shaft (12) is provided with a second bearing (17), and the rotating disc (16) is rotatably connected inside the second bearing (17).

6. The multistage pump with pump shaft unloading device according to claim 1, characterized in that the top of the housing (1) is provided with a hanging ring (24), and the hanging ring (24) is located on the gravity center line of the multistage pump.