CN209761735U - High-strength vertical multistage centrifugal pump - Google Patents

Abstract

The utility model discloses a vertical multistage centrifugal pump of high strength has solved the vibration of centrifugal pump axis of rotation and has caused the damage to the centrifugal pump, and its technical scheme main points are: the utility model provides a multistage vertical centrifugal pump of high strength, includes main part, axis of rotation and drive arrangement, the bearing bottom is provided with damping washer, the ring channel has been seted up in the axis of rotation, the ring channel be provided with the reinforcement ring outward, and leave the clearance between reinforcement ring and the ring channel, axis of rotation and main part bottom junction be provided with the water bearing, be provided with the water axle sleeve between water bearing and the axis of rotation, water bearing bottom be provided with the reinforcement gland, water axle sleeve bottom be provided with the fixed plate, be provided with the connecting rod between fixed plate and the reinforcement gland inner wall, the main part surface be provided with the back up coat. The purpose of increasing the overall strength of the centrifugal pump is achieved.

Description

High-strength vertical multistage centrifugal pump

Technical Field

The utility model belongs to the technical field of the centrifugal pump, refer in particular to a vertical multistage centrifugal pump of high strength.

Background

The multi-stage vertical centrifugal pump has compact integral structure, small volume, light weight, low noise, obvious energy-saving effect and convenient maintenance. When the multistage vertical centrifugal pump works, an impeller of the multistage vertical centrifugal pump rotates at a high speed, liquid filled in the impeller is thrown to the periphery of the impeller from the center of the impeller along a flow channel between blades under the action of centrifugal force, pressure and speed are increased simultaneously due to the action of the blades, the liquid passes through the flow channel of the guide shell and is guided to the next-stage impeller, and according to the principle, the liquid flows through all the impellers and the guide shell one by one, so that the pressure energy of the liquid is further increased. After each impeller is overlapped step by step, a certain lift is obtained.

However, current multistage vertical centrifugal pump is in the course of the work, because the motor can produce great torsion to the axis of rotation when starting and stopping, can lead to axis of rotation self to produce axial torsion, can lead to being connected between axis of rotation and the main part not hard up after a period of time, and simultaneously, the vibrations that motor self during operation produced can arouse the radial vibration of centrifugal pump axis of rotation.

Disclosure of Invention

The utility model aims at providing a high strength multistage vertical centrifugal pump.

The purpose of the utility model is realized like this: a high-strength multistage vertical centrifugal pump comprises a main body, a rotating shaft and a driving device, wherein the rotating shaft is positioned in the middle of the main body, the driving device is connected with the rotating shaft, a plurality of impellers are axially distributed on the rotating shaft, a bearing is arranged at the joint of the rotating shaft and the top of the main body, a damping gasket is arranged at the bottom of the bearing, a ring groove is formed in the rotating shaft and is positioned at the bottom of the damping gasket, a reinforcing ring is arranged outside the ring groove and is fixed on the inner wall of the top of the main body, the shape of the inner wall of the reinforcing ring is matched with that of the ring groove, a gap is reserved between the reinforcing ring and the ring groove, a water bearing is arranged at the joint of the rotating shaft and the bottom of the main body, a water shaft sleeve is arranged between the water bearing and the rotating, a connecting rod is arranged between the fixing plate and the inner wall of the reinforcing gland, and a reinforcing layer is arranged on the outer surface of the main body.

The utility model discloses further optimize to: the rotating shaft is provided with 3 impellers, and spacing sleeves are arranged among the impellers.

The utility model discloses further optimize to: the bottom of the driving device is provided with a fixed seat, a clamping shell coupler is arranged between the driving device and the rotating shaft, a support is arranged outside the clamping shell coupler, and the support is connected between the main body and the fixed seat.

The utility model discloses further optimize to: the driving device is a driving motor.

Compared with the prior art, the utility model outstanding and profitable technological effect is: the utility model discloses the reducible drive arrangement vibrations of shock attenuation packing ring at main part top are to the influence that the main part produced, and the reinforcing ring can prevent that the axis of rotation from producing axial vibrations or axial little distance drunkenness simultaneously, and the reinforcing gland of main part bottom can further prevent the axial drunkenness of device axis of rotation, has increased the sealed effect of device simultaneously.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of a part of the structure of the present invention;

Fig. 3 is a partially enlarged view of a portion a in fig. 1.

In the figure: 1-main body, 2-driving device, 3-clamping shell coupling, 4-rotating shaft, 5-impeller, 6-fixed seat, 7-support, 8-spacer sleeve, 9-reinforcing layer, 10-annular groove, 11-reinforcing ring, 12-bearing, 13-damping washer, 14-reinforcing gland, 15-fixing plate, 16-water bearing and 17-water shaft sleeve.

Detailed Description

The invention will be further described with reference to specific embodiments in conjunction with the accompanying drawings, see fig. 1-3: a high-strength multistage vertical centrifugal pump comprises a main body 1, a rotating shaft 4 and a driving device 2, wherein the driving device 2 is a driving motor, the rotating shaft 4 is positioned in the middle of the main body 1, the driving motor is connected with the rotating shaft 4, a plurality of impellers 5 which are axially distributed are arranged on the rotating shaft 4, a bearing 12 is arranged at the joint of the rotating shaft 4 and the top of the main body 1, a damping gasket 13 is arranged at the bottom of the bearing 12, the damping gasket 13 can be made of metal materials or rubber materials, the influence of vibration on the rotating shaft 4 can be greatly reduced, annular grooves 10 are formed in the rotating shaft 4, the number of the annular grooves 10 is two adjacent, the annular grooves 10 are positioned at the bottom of the damping gasket 13, reinforcing rings 11 are arranged outside the annular grooves 10, the reinforcing rings 11 and the main body 1 are of an integrated structure, and the shapes of the inner walls, and a gap is left between the reinforcing ring 11 and the annular groove 10, by adopting the structure, the reinforcing ring 11 can be matched with the annular groove 10, when the rotating shaft 4 axially moves, the reinforcing ring 11 can limit the rotating shaft 4, the joint of the rotating shaft 4 and the bottom of the main body 1 is provided with the water bearing 16, the water shaft sleeve 17 is arranged between the water bearing 16 and the rotating shaft 4, the bottom of the water bearing 16 is provided with the reinforcing gland 14, the reinforcing gland 14 is connected with the bottom of the main body 1 through a bolt, the bottom of the water shaft sleeve 17 is provided with the fixing plate 15, a connecting rod is arranged between the fixing plate 15 and the inner wall of the reinforcing gland 14, by adopting the structure, the reinforcing gland 14 can reinforce the water bearing 16, meanwhile, the fixing plate 15 can limit the rotating shaft 4 and the water shaft sleeve 17, the rotating shaft 4 is further prevented from axially vibrating, and meanwhile, the fixing plate 15, the fixing plate 15 and the reinforcing gland 14 can be fixed simultaneously, the reinforcing layer 9 is arranged on the outer surface of the main body 1, the reinforcing layer 9 can improve the structural strength of the outer wall of the device, and the centrifugal pump is prevented from being damaged due to external impact.

In this embodiment, driving motor bottom be provided with fixing base 6, the influence that 6 reducible driving motor's of fixing base vibrations produced main part 1, driving motor and axis of rotation 4 between be provided with double-layered shell shaft coupling 3, double-layered shell shaft coupling 3 outside be provided with support 7, support 7 is connected between main part 1 and fixing base 6. By adopting the structure, the bracket 7 can reduce the vibration generated by the clamping shell coupling 3 and increase the anti-vibration effect of the device. The utility model discloses further optimize to, axis of rotation 4 on set up 3 impellers 5, be provided with spacer sleeve 8 between each impeller 5.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (4)

1. The utility model provides a vertical multistage centrifugal pump of high strength, includes main part (1), axis of rotation (4) and drive arrangement (2), axis of rotation (4) are located main part (1) middle part, drive arrangement (2) be connected with axis of rotation (4), axis of rotation (4) on be provided with a plurality of impeller (5) of axial distribution, its characterized in that, axis of rotation (4) and main part (1) top junction are provided with bearing (12), bearing (12) bottom is provided with damping washer (13), axis of rotation (4) is last to have seted up ring channel (10), ring channel (10) are located damping washer (13) bottom, ring channel (10) be provided with reinforcing ring (11) outward, reinforcing ring (11) are fixed in main part (1) top inner wall, reinforcing ring (11) inner wall shape and ring channel (10) shape cooperate, and a gap is reserved between the reinforcing ring (11) and the annular groove (10), a water bearing (16) is arranged at the joint of the bottom of the rotating shaft (4) and the bottom of the main body (1), a water shaft sleeve (17) is arranged between the water bearing (16) and the rotating shaft (4), a reinforcing gland (14) is arranged at the bottom of the water bearing (16), a fixing plate (15) is arranged at the bottom of the water shaft sleeve (17), a connecting rod is arranged between the inner wall of the fixing plate (15) and the inner wall of the reinforcing gland (14), and a reinforcing layer (9) is arranged on the outer surface of the main body (1).

2. A high strength vertical multistage centrifugal pump according to claim 1, wherein 3 impellers (5) are provided on said rotating shaft (4), and a spacer sleeve (8) is provided between each impeller (5).

3. The high-strength vertical multistage centrifugal pump according to claim 1, wherein a fixed seat (6) is arranged at the bottom of the driving device (2), a split-shell coupling (3) is arranged between the driving device (2) and the rotating shaft (4), a bracket (7) is arranged outside the split-shell coupling (3), and the bracket (7) is connected between the main body (1) and the fixed seat (6).

4. A high strength vertical multistage centrifugal pump according to claim 1, wherein said driving means (2) is a driving motor.