CN214698868U

CN214698868U - Stable coupling mechanism of centrifugal pump

Info

Publication number: CN214698868U
Application number: CN202120421085.6U
Authority: CN
Inventors: 李再成
Original assignee: CHENGDU SOUTHWEST VALVE CO LTD
Current assignee: CHENGDU SOUTHWEST VALVE CO LTD
Priority date: 2021-02-25
Filing date: 2021-02-25
Publication date: 2021-11-12
Anticipated expiration: 2031-02-25

Abstract

The utility model discloses a steady coupling mechanism of a centrifugal pump, which comprises a relay connector, a motor end connector and a pump body end connector, wherein the relay connector is arranged between a motor and a pump body and is fixed on a base bracket; the motor end connector and the pump body end connector are identical in structure; the pump body end connector is a coupling seat, one end of the coupling seat is connected with the relay connector, and the other end of the coupling seat is connected with the pump body; the coupling seat comprises a plum blossom connecting piece, a right plum blossom plug-in and a left plum blossom plug-in which are buckled with the plum blossom connecting piece and are arranged at two ends of the plum blossom connecting piece in a one-to-one correspondence manner; the relay connector comprises a relay connecting seat fixed on the base support, a rolling bearing embedded in the relay connecting seat, and a connecting shaft rod sleeved in the rolling bearing and with two ends connected with the motor end connector and the pump body end connector in a one-to-one correspondence manner.

Description

Stable coupling mechanism of centrifugal pump

Technical Field

The utility model belongs to the technical field of the shaft coupling technique and specifically relates to a steady coupling mechanism of centrifugal pump.

Background

The coupling is a device for connecting two shafts or a shaft and a rotating part, rotating together in the process of transmitting motion and power and not separating under normal conditions. The coupler can be divided into a rigid coupler and a flexible coupler, wherein the rigid coupler does not have the buffer property and the capability of compensating relative displacement of two axes and requires strict centering of the two axes, but the coupler has the advantages of simple structure, lower manufacturing cost, convenient assembly, disassembly and maintenance, higher centering property of the two axes, larger transmission torque and wide application. Flange couplings, sleeve couplings, split coupling and the like are commonly used. In addition, the flexible coupling can be divided into an inelastic element flexible coupling and an elastic element flexible coupling, the former type only has the capability of compensating relative displacement of two axes but cannot buffer vibration damping, and a sliding block coupling, a tooth type coupling, a universal coupling, a chain coupling and the like are common; the latter type has the capability of compensating relative displacement of two axes due to the elastic element, and also has the functions of buffering and vibration reduction, but the transmitted torque is limited by the strength of the elastic element, and is generally not as good as a flexible coupling without the elastic element, such as a common elastic sleeve pin coupling, an elastic pin coupling, a quincunx coupling, a tire type coupling, a serpentine spring coupling, a reed coupling and the like.

At present, a stable coupling mechanism of a centrifugal pump in the prior art mostly adopts a quincunx shape, and although the connection is reliable, the stability is poor, and particularly, the coupling distance is long. Therefore, it is highly desirable to provide a stable coupling mechanism for a centrifugal pump that is simple in structure, stable, and reliable.

SUMMERY OF THE UTILITY MODEL

To the above problem, an object of the utility model is to provide a steady coupling mechanism of centrifugal pump, the utility model discloses a technical scheme as follows:

a stable coupling mechanism of a centrifugal pump is used for being arranged between a motor and a pump body, the motor and the pump body are both arranged on a base support, and the stable coupling mechanism of the centrifugal pump comprises a relay connector, a motor end connector and a pump body end connector, wherein the relay connector is arranged between the motor and the pump body and is fixed on the base support; the motor end connector and the pump body end connector are identical in structure; the pump body end connector is a coupling seat, one end of the coupling seat is connected with the relay connector, and the other end of the coupling seat is connected with the pump body; the coupling seat comprises a plum blossom connecting piece, a right plum blossom plug-in and a left plum blossom plug-in which are buckled with the plum blossom connecting piece and are arranged at two ends of the plum blossom connecting piece in a one-to-one correspondence manner; the relay connector comprises a relay connecting seat fixed on the base support, a rolling bearing embedded in the relay connecting seat, and a connecting shaft rod sleeved in the rolling bearing and with two ends connected with the motor end connector and the pump body end connector in a one-to-one correspondence manner.

Further, the plum blossom connecting piece comprises a plum blossom central body and first plum blossom teeth which are annularly arranged on the edge of the plum blossom central body.

Furthermore, the right plum blossom insert and the left plum blossom insert are identical in structure, the right plum blossom insert comprises an open hoop body, a second plum blossom tooth, a hooping hole and a hooping nut, the second plum blossom tooth is integrally formed with the hoop body and is buckled with the first plum blossom tooth in a complementary mode, the hooping hole penetrates through the opening of the hoop body, and the hooping nut is arranged in the hooping hole and used for tightening the opening of the hoop body.

Furthermore, a connecting compensation rod is arranged in the center of the connecting shaft rod, and a central compensation groove which is complementary with the connecting compensation rod is arranged in the quincuncial central body.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model skillfully arranges the relay connector to provide a rotary support and effectively avoid the swing of the shaft coupling; in addition, the utility model provides sufficient rotation torque connection and buffer connection through the motor end connector and the pump body end connector with the same structure; moreover, the utility model discloses a set up plum blossom plug-in components, guarantee to connect more reliably. To sum up, the utility model has the advantages of simple structure, connect reliable etc. and operate steadily, have very high practical value and spreading value in shaft coupling technical field.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as a limitation of the scope of protection, and for those skilled in the art, other related drawings may be obtained from these drawings without inventive effort.

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

Fig. 2 is a schematic view of a three-dimensional structure of the shaft coupling seat of the present invention.

Fig. 3 is a schematic structural diagram of the plum blossom connecting piece of the present invention.

Fig. 4 is a schematic structural view of the coupling seat of the present invention.

Fig. 5 is a schematic structural view of the right plum blossom insert of the present invention.

Fig. 6 is a schematic structural diagram of the relay connector of the present invention.

Fig. 7 is a right side view of the relay connector of the present invention.

In the drawings, the names of the parts corresponding to the reference numerals are as follows:

1. a relay connector; 2. a motor end connector; 3. a pump body end connector; 11. a relay connection seat; 12. connecting the shaft lever; 13. a rolling bearing; 31. a shaft coupling seat; 121. connecting a compensation rod; 311. a quincuncial connecting piece; 312. a right plum blossom insert; 313. a left plum blossom insert; 3111. a quincunx central body; 3112. a first plum blossom tooth; 3113. a central compensation groove; 3121. a hoop body; 3122. a second plum blossom tooth; 3123. a cinching hole; 3124. and tightening the nut.

Detailed Description

To make the objectives, technical solutions and advantages of the present application more clear, the present invention will be further described with reference to the accompanying drawings and examples, and embodiments of the present invention include, but are not limited to, the following examples. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Examples

As shown in fig. 1 to 7, the present embodiment provides a smooth coupling mechanism of a centrifugal pump, which is provided between a motor and a pump body, both of which are provided on a base bracket. First, the terms "first", "second", and the like in the present embodiment are used only for distinguishing the same kind of components, and are not to be construed as specifically limiting the scope of protection. In the present embodiment, the terms of orientation such as "bottom", "top", "peripheral edge", "center", and the like are explained based on the drawings.

In this embodiment, the stable coupling mechanism of the centrifugal pump includes a relay connector 1 disposed between the motor and the pump body and fixed on the base bracket, a motor end connector 2 disposed between the relay connector 1 and the motor, and a pump end connector 3 disposed between the relay connector 1 and the pump body; the motor end connector 2 and the pump body end connector 3 are identical in structure. The pump body end connector 3 is a coupling seat 31 with one end connected with the relay connector 1 and the other end connected with the pump body. The shaft coupling seat 31 includes a quincuncial connector 311, and a right quincuncial plug 312 and a left quincuncial plug 313 which are connected to the quincuncial connector 311 in a buckling manner and are disposed at two ends of the quincuncial connector 311 in a one-to-one correspondence manner. The quincunx connector 311 includes a quincunx central body 3111, and a first quincunx tooth 3112 annularly disposed at an edge of the quincunx central body 3111. The right plum blossom insert 312 and the left plum blossom insert 313 are identical in structure, and the right plum blossom insert 312 comprises an open hoop body 3121, a second plum blossom tooth 3122 which is integrally formed with the hoop body 3121 and complementarily buckled with the first plum blossom tooth 3112, a banding hole 3123 which penetrates through the opening of the hoop body 3121, and a banding nut 3124 which is placed in the banding hole 3123 and used for the opening of the hoop body 3121 to be tightened.

In this embodiment, the relay connector 1 includes a relay connecting seat 11 fixed on the base bracket, a rolling bearing 13 embedded in the relay connecting seat 11, and a connecting shaft rod 12 sleeved in the rolling bearing 13 and having two ends connected with the motor end connector 2 and the pump body end connector 3 in a one-to-one correspondence manner. A connection compensation bar 121 is provided on the center of the connection shaft 12, and a center compensation groove 3113 complementary to the connection compensation bar 121 is provided in the quincunx central body 3111.

In this embodiment, the motor end connector 2 is connected to the motor, and the pump end connector 3 is connected to the pump body, and the rolling bearing 13 of the relay connector 1 provides a rotary support. In addition, the central compensating groove 3113 and the connecting compensating rod 121 provide a complementary connection.

The above-mentioned embodiments are merely preferred embodiments of the present invention, and are not limitations on the protection scope of the present invention, but all the changes made by adopting the design principle of the present invention and performing non-creative work on this basis shall fall within the protection scope of the present invention.

Claims

1. A stable coupling mechanism of a centrifugal pump is used for being arranged between a motor and a pump body, wherein the motor and the pump body are both arranged on a base support, and is characterized in that the stable coupling mechanism of the centrifugal pump comprises a relay connector (1) which is arranged between the motor and the pump body and is fixed on the base support, a motor end connector (2) which is arranged between the relay connector (1) and the motor, and a pump end connector (3) which is arranged between the relay connector (1) and the pump body; the motor end connector (2) and the pump body end connector (3) are identical in structure; the pump body end connector (3) is a coupling seat (31) with one end connected with the relay connector (1) and the other end connected with the pump body; the shaft coupling seat (31) comprises a plum blossom connecting piece (311), a right plum blossom plug-in piece (312) and a left plum blossom plug-in piece (313) which are buckled with the plum blossom connecting piece (311) and are arranged at two ends of the plum blossom connecting piece (311) in a one-to-one correspondence manner; the relay connector (1) comprises a relay connecting seat (11) fixed on a base support, a rolling bearing (13) embedded in the relay connecting seat (11), and a connecting shaft rod (12) sleeved in the rolling bearing (13) and connected with a motor end connector (2) and a pump body end connector (3) in a one-to-one correspondence mode at two ends.

2. A stationary coupling mechanism of a centrifugal pump according to claim 1, characterized in that said quincunx connector (311) comprises a quincunx hub (3111), a first quincunx tooth (3112) annularly arranged at an edge of the quincunx hub (3111).

3. The smooth coupling mechanism of a centrifugal pump according to claim 2, wherein the right quincunx insert (312) and the left quincunx insert (313) are identical in structure, and the right quincunx insert (312) includes an open collar body (3121), a second quincunx tooth (3122) integrally formed with the collar body (3121) and complementarily snap-fitted with the first quincunx tooth (3112), a tightening hole (3123) passing through the opening of the collar body (3121), and a tightening nut (3124) disposed in the tightening hole (3123) for tightening the opening of the collar body (3121).

4. A smooth coupling mechanism of a centrifugal pump according to claim 3, characterized in that a connection compensation rod (121) is provided on the center of the connection shaft rod (12), and a central compensation groove (3113) complementary to the connection compensation rod (121) is provided in the quincunx central body (3111).