CN212690444U

CN212690444U - Impeller back-to-back multistage centrifugal pump rotor part

Info

Publication number: CN212690444U
Application number: CN202021408108.1U
Authority: CN
Inventors: 柏兴润
Original assignee: Chongqing Xiquan Pump Industry Co ltd
Current assignee: Chongqing Xiquan Pump Industry Co ltd
Priority date: 2020-07-16
Filing date: 2020-07-16
Publication date: 2021-03-12
Anticipated expiration: 2030-07-16

Abstract

The utility model provides an impeller multistage centrifugal pump rotor part back to back, including pivot, connecting axle and coupling assembling, the pivot with the one end that the connecting axle is close to mutually all is formed with the connector, coupling assembling is used for connecting pivot and connecting axle, coupling assembling has two, and each coupling assembling includes axle sleeve, connecting plate, spring and first stopper, the connecting plate both ends form can block respectively into the arch of two connectors, the spring is located the installation cavity that the arch was seted up, first stopper also sets up in the installation cavity, and just first stopper stretches out the installation cavity under the spring action part, the axle sleeve is used for the cover to locate outside two connectors to place the connecting plate when two connectors sides, first stopper can block into the first spacing downthehole of seting up on the ring channel of connector. The utility model discloses a coupling assembling convenient to use is convenient for install and is dismantled.

Description

Impeller back-to-back multistage centrifugal pump rotor part

Technical Field

The utility model relates to the technical field of fluid machinery, especially, relate to an impeller back to back multistage centrifugal pump rotor part.

Background

The rotor part of the centrifugal pump comprises a rotating shaft arranged in the center, and the rotating shaft is connected with the outer shaft through a connecting assembly. The concrete structure does, and the pivot all is formed with the connector with the one end that outer axle is close to each other, has seted up annular recess on the connector, goes into the tip card of two rands in the recess to connect pivot and outer axle, overlap the axle sleeve again on the connector of pivot and outer axle, and wrap at two rands outsidely, twist the threaded hole of seting up on the axle sleeve with the screw at last, in order to realize the fixed of axle sleeve.

The above prior art has the disadvantage that since the centrifugal pump is often operated in an oil-rich and water-rich environment, the screw is corroded after long-term use, and when the centrifugal pump needs to be connected to other outer shafts, the screw is difficult to unscrew.

SUMMERY OF THE UTILITY MODEL

To the not enough that exists among the prior art, the utility model provides an impeller back to back multistage centrifugal pump rotor part, it has solved the screw on the long-term use back centrifugal pump axle sleeve that exists among the prior art and has corroded, and is difficult to be unscrewed, the inconvenient problem of taking off the axle sleeve that leads to.

According to the embodiment of the utility model, an impeller multistage centrifugal pump rotor part back to back, including pivot, connecting axle and coupling assembling, the pivot with the one end that the connecting axle is close to mutually all is formed with the connector, coupling assembling is used for connecting pivot and connecting axle, coupling assembling has two, and each coupling assembling includes axle sleeve, connecting plate, spring and first stopper, the connecting plate both ends form can block respectively into the arch of two connectors, the spring is located the installation cavity that the arch was seted up, first stopper also sets up in the installation cavity, and just first stopper stretches out the installation cavity under the spring action part, the axle sleeve is used for the cover to locate outside two connectors to place the connecting plate in two connector sides, first stopper can block into the first spacing downthehole of seting up on the ring channel of connector.

Compared with the prior art, the utility model discloses following beneficial effect has: the rotor part is pushed by a spring of the connecting assembly, so that the first limiting block part extends out of the mounting cavity of the connecting plate, the first limiting block is clamped into the first limiting hole in the connecting head of the rotating shaft and the connecting shaft, the shaft sleeve is sleeved outside the two connecting heads, the rotating shaft and the connecting shaft can be limited to rotate relatively, and the rotating shaft and the connecting shaft can be connected. For the connected mode of tradition use screw, the utility model discloses use spring and stopper locking, can rotate the axle sleeve when changing the connecting axle, take off it from two connecting heads, can easily change the connecting axle.

Drawings

Fig. 1 is a sectional view of an impeller back-to-back multistage centrifugal pump.

Fig. 2 is a cross-sectional view of rotor components of an impeller back-to-back multistage centrifugal pump.

Fig. 3 is a schematic view of the joint of the rotating shaft and the connecting shaft.

Fig. 4 is a cross-sectional view of the bushing.

Fig. 5 is a cross-sectional view of the connection assembly.

In the above drawings: the connecting structure comprises a rotating shaft 1, an impeller 11, a connecting shaft 2, a connecting assembly 3, a shaft sleeve 31, a second limiting hole 311, a large hole 3111, a small hole 3112, a connecting plate 32, a protrusion 321, an installation cavity 322, a second limiting block 323, a second limiting ring 324, a spring 33, a first limiting block 34, a first limiting ring 341, a connecting head 4, an annular groove 41 and a first limiting hole 42.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments.

As shown in fig. 1-5, fig. 1 is a sectional view of an impeller back-to-back multistage centrifugal pump, in which an impeller 11 is installed on a rotating shaft 1 of a rotor component, fig. 2 is a sectional view of a rotor component of an impeller back-to-back multistage centrifugal pump, an embodiment of the present invention provides a rotor component of an impeller back-to-back multistage centrifugal pump, which includes a rotating shaft 1, a connecting shaft 2 and two connecting assemblies 3, wherein a connector 4 is formed at one end of the rotating shaft 1 and the connecting shaft 2, the connecting assemblies 3 are used for connecting the rotating shaft 1 and the connecting shaft 2, the connecting assemblies 3 include two connecting assemblies 3, each connecting assembly 3 includes a shaft sleeve 31, a connecting plate 32, a spring 33 and a first stopper 34, when in use, the two connectors 4 are aligned, two ends of the connecting plate 32 form protrusions 321 capable of being respectively clamped into the two connectors 4, the spring 33 is located in, first stopper 34 also sets up in installation cavity 322, first stopper 34 and installation cavity 322 clearance fit, and first stopper 34 stretches out installation cavity 322 in spring 33 effect part down, axle sleeve 31 is used for the cover to locate outside two connectors 4 to place connecting plate 32 when two connectors 4 sides, first stopper 34 can block into the first spacing hole 42 of seting up on the ring channel 41 of connector 4 in, axle sleeve 31 cover is established at two connectors 4 junctions, avoids connecting plate 32 to break away from two connectors 4 like this, and connecting plate 32 can prevent that axle sleeve 31 from removing along two connectors 4 under spring 33 promotes.

Further, as shown in fig. 3, a second stopper 323 is fixed on one side of each connecting plate 32 departing from the two protrusions 321, so that the second stopper 323 can respectively extend into the second stopper holes 311 formed in the shaft sleeve 31 under the pushing of the spring 33, and the second stopper 323 is designed to extend into the first stopper hole 42 and the spring 33 can continuously push the second stopper 323 to be clamped into the second stopper holes 311 after the spring 33 pushes the connecting plate 32, thereby preventing the shaft sleeve 31 from rotating and moving along the connecting head 4.

Further, as shown in fig. 4, the second stopper hole 311 includes a large hole 3111 and a small hole 3112, the large hole 3111 is used for accommodating the second stopper 323, the small hole 3112 has a smaller hole diameter than the large hole 3111, so as to prevent the second stopper 323 from entering the small hole 3112, the small hole 3112 is communicated with the large hole 3111, and the small hole 3112 is communicated with the outside of the shaft sleeve 31, so that an operator can use a tool to press the second stopper 323 from the small hole 3112 to the connector 4 to remove the shaft sleeve 31.

Further, the first stopper 34 is provided with a first stop collar 341, and a second stop collar 324 is formed in the mounting cavity 322 in a protruding manner, when in use, the first stopper 34 is partially located in the mounting cavity 322, and the second stop collar 324 contacts with the first stop collar 341, so that the second stop collar 324 can prevent the first stopper 34 from separating from the mounting cavity 322 under the pushing of the spring 33.

Further, a chamfer is formed at one end of the second limiting block 323 departing from the connecting plate 32, so that the second limiting block 323 cannot influence the operation of the rotating shaft 1 when the rotating shaft rotates.

Compared with the existing mode of fixing the shaft sleeve 31 by the screw, the utility model can align the two connectors 4, align the first limit block 34 on the connecting plate 32 with the two first limit holes 42 on the connectors 4, insert the two connectors 4, limit the rotation of the rotating shaft 1 and the connecting shaft 2, finally sleeve the shaft sleeve 31 on the connectors 4, and clamp the second limit block 323 into the second limit hole 311 to complete the connection; when the connecting shaft 2 needs to be replaced, a tool, such as a pointed screwdriver, can be inserted into the small hole 3112, and then the shaft sleeve 31 can be moved along the two connectors 4 by rotating the shaft sleeve 31 and then taken down.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. The utility model provides an impeller multistage centrifugal pump rotor part back to back, a serial communication port, including pivot, connecting axle and coupling assembling, the pivot with the one end that the connecting axle is close to each other all is formed with the connector, coupling assembling is used for connecting pivot and connecting axle, coupling assembling has two, and each coupling assembling includes axle sleeve, connecting plate, spring and first stopper, the connecting plate both ends form can block the arch of going into two connectors respectively, the spring is located the installation cavity that the arch was seted up, first stopper also sets up in the installation cavity, and just first stopper stretches out the installation cavity under the spring action part, the axle sleeve is used for the cover to locate outside two connectors to place the connecting plate when two connector sides, first stopper can block into the first spacing downthehole of seting up on the ring channel of connector.

2. The rotor component of the impeller back-to-back multistage centrifugal pump as claimed in claim 1, wherein a second limiting block is fixed to a side of each connecting plate facing away from the two protrusions, so that the second limiting blocks can respectively extend into the second limiting holes formed in the shaft sleeve under the pushing of the spring.

3. An impeller back-to-back multistage centrifugal pump rotor component according to claim 2, wherein the second retainer hole comprises a large hole for receiving the second retainer and a small hole having a smaller diameter than the large hole, the small hole communicating with the large hole and the small hole communicating to the outside of the sleeve, so that an operator can use a tool to press the second retainer from within the small hole to the connector to remove the sleeve.

4. The rotor component of the impeller back-to-back multistage centrifugal pump according to claim 1, wherein the first stopper is provided with a first stopper ring, and the mounting cavity is internally protruded with a second stopper ring, so that the second stopper ring can prevent the first stopper from being separated from the mounting cavity under the pushing of the spring.

5. The rotor component of the impeller back-to-back multistage centrifugal pump of claim 2, wherein an end of the second stopper facing away from the connecting plate is chamfered.