CN213981366U

CN213981366U - Impeller fixing structure

Info

Publication number: CN213981366U
Application number: CN202022574717.0U
Authority: CN
Inventors: 向云峰
Original assignee: DSM Eternal Resins Kunshan Co Ltd
Current assignee: Covestro Eternal Resins Kunshan Co Ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-08-17
Anticipated expiration: 2030-11-10

Abstract

The utility model discloses an impeller fixed knot constructs, it includes fuselage, impeller, pivot and solid fixed ring. The impeller is arranged in the machine body and comprises a hub, the hub is provided with a first end surface and a second end surface which are opposite to each other along a preset direction, and the first end surface of the hub is rotatably connected with the machine body; and the rotating shaft penetrates into the hub from the second end surface of the hub so as to drive the hub to rotate. And the fixing ring is sleeved on the rotating shaft, and the fixing ring is arranged on the second end surface of the impeller. The fixing ring is provided with at least one threaded hole in the preset direction, a first screw is arranged in the threaded hole, and the first screw is abutted to the second end face of the hub. The utility model discloses impeller fixed knot constructs can effectively avoid not hard up and the swing of impeller, improve equipment's reliability, reduces the fault rate of equipment, has avoided possible fire explosion risk.

Description

Impeller fixing structure

Technical Field

The utility model relates to a vacuum pump technical field, specific is an impeller fixed knot constructs.

Background

A fixing ring is arranged between the impeller and the rotating shaft of the vacuum pump and plays a role in fixing the impeller so as to prevent the impeller from sliding along the rotating shaft and loosening. The fixing ring in the prior art is provided with an internal thread, an external thread matched with the internal thread of the fixing ring is arranged at a corresponding position on the rotating shaft, and the fixing ring is in threaded connection with the rotating shaft. When the vacuum pump operates, the fixing ring slides back to the impeller along the surface of the rotating shaft easily due to vibration and temperature change, so that the fixing effect on the impeller is lost, the impeller is finally loosened and swung, the loosened impeller can rub a cavity on the side face of the pump body, sparks are generated, and fire explosion risks can be caused in serious cases.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defect among the prior art, the utility model provides an impeller fixed knot constructs, its not hard up and the swing that can effectively avoid the impeller, improve equipment's reliability reduces the fault rate of equipment, has avoided possible fire explosion risk.

The utility model discloses an impeller fixed knot constructs, include:

a body;

the impeller is arranged in the machine body and comprises a hub, the hub is provided with a first end surface and a second end surface which are opposite to each other along a preset direction, and the first end surface of the hub is rotatably connected with the machine body;

the rotating shaft penetrates into the hub from the second end face of the hub so as to drive the hub to rotate; and

the fixing ring is sleeved on the rotating shaft and arranged on the second end surface of the impeller;

at least one threaded hole is formed in the fixing ring along the preset direction, a first screw is arranged in the threaded hole, and the first screw is abutted to the second end face of the hub.

Preferably, the fixing ring is disposed coaxially with the hub.

Preferably, the rotating shaft is in threaded connection with the fixing ring.

Preferably, a plurality of threaded holes are formed in the fixing ring, and any two threaded holes are symmetrical in the radial direction of the fixing ring.

Preferably, the fixing ring is provided with an opening along a radial direction thereof, and two surfaces of the opening are connected by a second screw which is perpendicular to an axial direction of the fixing ring.

Preferably, the two sides of the opening are respectively provided with a first connecting hole and a second connecting hole, the first connecting hole and the second connecting hole are oppositely arranged, and two ends of the second screw are respectively in threaded connection with the first connecting hole and the second connecting hole.

Furthermore, a groove body is arranged at the position, close to the first connecting hole, of the outer side wall of the fixing ring, the first connecting hole is communicated with the groove body, one end of the second screw is arranged in the groove body, and the other end of the second screw penetrates through the first connecting hole and then is arranged in the second connecting hole.

Preferably, the impeller includes a plurality of blades, and the plurality of blades are distributed on the outer side of the hub along the circumferential direction.

The utility model has the advantages as follows:

the utility model discloses impeller fixed knot constructs, set up the screw hole along predetermineeing the direction through the terminal surface at solid fixed ring, and set up first screw in the screw hole, set up first screw and wheel hub's second terminal surface looks butt simultaneously, thereby when impeller and solid fixed ring rotate along with the pivot, first screw can prevent the relative rotation between solid fixed ring and the impeller wheel hub, thereby solid fixed ring's not hard up has been avoided, make solid fixed ring can play better fixed action to the impeller, and then prevent not hard up and the swing of impeller, improve equipment's reliability, reduce equipment's fault rate, possible fire explosion risk has been avoided.

The utility model discloses impeller fixed knot constructs, through setting up solid fixed ring along radially being equipped with the opening, this opening communicates with the mounting hole of solid fixed ring center department for solid fixed ring can slightly expand, thereby be convenient for solid fixed ring and the installation of pivot, set up simultaneously through second screwed connection between the open-ended two sides, thereby can tighten up solid fixed ring, increase the connection stability between solid fixed ring and the pivot, further avoid solid fixed ring not hard up, thereby improve the fixed action of solid fixed ring to the impeller.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of an impeller fixing structure in an embodiment of the present invention;

fig. 2 is a schematic structural view of a fixing ring in an embodiment of the present invention;

reference numerals of the above figures: 1-a fixed ring; 2-a fuselage; 3-a hub; 4-a blade; 5-a rotating shaft; 6-a first screw; 7-a second screw; 101-a threaded hole; 102-an opening; 103-a trough body; 104-mounting holes.

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.

The utility model discloses an impeller fixed knot constructs, include:

a body 2;

the impeller is arranged in the machine body 2 and comprises a hub 3, the hub 3 is provided with a first end face and a second end face which are opposite to each other along a preset direction, and the first end face of the hub 3 is rotatably connected with the machine body 2;

the rotating shaft 5 penetrates into the hub 3 from the second end face of the hub 3 so as to drive the hub 3 to rotate; and

the fixing ring 1 is sleeved on the rotating shaft 5, and the fixing ring 1 is arranged on the second end surface of the impeller;

at least one threaded hole 101 is formed in the fixing ring 1 along the preset direction, a first screw 6 is arranged in the threaded hole 101, and the first screw 6 is abutted to the second end face of the hub 3.

Referring to fig. 1-2, the present embodiment provides an impeller fixing structure including a body 2, an impeller, a rotating shaft 5, and a fixing ring 1.

The impeller is provided in the body 2. The impeller includes hub 3 and a plurality of blades 4, and a plurality of blades 4 distribute in the outside of hub 3 along circumference.

The hub 3 of the impeller has opposite first and second end faces in a predetermined direction. The first end surface of the hub 3 is rotatably connected with the body 2.

The rotating shaft 5 penetrates into the hub 3 from the second end face of the hub 3 so as to drive the hub 3 to rotate. The rotating shaft 5 is connected with an output shaft of the motor through a coupler, or the output shaft of the motor is directly arranged to be the rotating shaft 5, and the impeller hub 3 can be driven by the rotating shaft 5.

The fixing ring 1 is circular. The central part of the fixing ring 1 is provided with a mounting hole 104 matched with the size of the rotating shaft 5, so that the fixing ring 1 can be sleeved on the rotating shaft 5, and the rotating shaft 5 is in threaded connection with the fixing ring 1. The second terminal surface of impeller is located to solid fixed ring 1, and solid fixed ring 1 sets up with wheel hub 3 is coaxial to gu fixed ring 1 and fuselage 2 act on the impeller jointly, play fine fixed limiting displacement to the impeller.

In order to improve the fixed effect of solid fixed ring 1 to the impeller, this embodiment sets up two screw holes 101 along predetermineeing the orientation in the terminal surface of solid fixed ring 1, all is equipped with first screw 6 in two screw holes 101. The first screw 6 abuts against the second end face of the hub 3, so that when the impeller and the fixing ring 1 rotate along with the rotating shaft 5, the first screw 6 can prevent the fixing ring 1 and the impeller hub 3 from rotating relatively, and looseness of the fixing ring 1 is avoided. The two threaded holes 101 are symmetrical in the radial direction of the fixing ring 1, so that a better fixing effect can be achieved.

Threaded hole 101 also can set up a plurality ofly, all sets up first screw 6 in each threaded hole 101, and per two threaded hole 101 can realize better fixed action along solid fixed ring 1's radial symmetry. In the embodiment, two threaded holes 101 are provided, and through practice, a better fixing effect can be achieved.

The stationary ring 1 is provided with openings 102 in the radial direction. The opening 102 communicates with a mounting hole 104 at the center of the fixing ring 1. The opening 102 of the fixing ring 1 is provided so that the fixing ring 1 can be slightly expanded, thereby facilitating the installation of the fixing ring 1 with the rotation shaft 5.

A first connection hole and a second connection hole are respectively provided on both sides of the opening 102, and the first connection hole and the second connection hole are oppositely provided. The outer side wall of the fixing ring 1 is provided with a groove body 103 close to the first connecting hole. The first connecting hole is communicated with the groove body 103, one end of the second screw 7 is arranged in the groove body 103, and the other end of the second screw 7 penetrates through the first connecting hole and then is arranged in the second connecting hole. Both ends of the second screw 7 are in threaded connection with the first connection hole and the second connection hole. The second screw 7 is arranged perpendicular to the axial direction of the fixing ring 1. The installation of the second screw 7 can be facilitated by the arrangement of the groove 103.

Connect through second screw 7 between the two sides of opening 102 to can tighten up solid fixed ring 1, improve the screw fastening power between solid fixed ring 1 and pivot 5, increase the connection stability between solid fixed ring 1 and the pivot 5, further avoid solid fixed ring 1's not hard up.

The impeller fixing structure of the embodiment has the advantages that the first screw 6 is abutted to the second end face of the hub 3, and the second screw 7 is connected to the two end faces of the opening 102 of the fixing ring 1, so that the impeller can be effectively prevented from loosening and swinging, the reliability of equipment is improved, the failure rate of the equipment is reduced, and possible fire and explosion risks are avoided.

The utility model discloses the principle and the implementation mode of the utility model are explained by applying the concrete embodiment, and the explanation of the above embodiment is only used for helping to understand the technical scheme and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims

1. An impeller fixing structure, characterized by comprising:

a body;

2. The impeller fixing structure according to claim 1, wherein the fixing ring is provided coaxially with the hub.

3. The impeller fixing structure according to claim 1, wherein the rotation shaft is screwed with the fixing ring.

4. The impeller fixing structure according to claim 1, wherein the fixing ring is provided with a plurality of threaded holes, and any two of the threaded holes are symmetrical in a radial direction of the fixing ring.

5. The impeller fixing structure according to claim 1, wherein the fixing ring is provided with an opening along a radial direction thereof, and both surfaces of the opening are connected by a second screw provided perpendicularly to an axial direction of the fixing ring.

6. The impeller fixing structure according to claim 5, wherein a first connection hole and a second connection hole are respectively formed at both sides of the opening, the first connection hole and the second connection hole are oppositely disposed, and both ends of the second screw are respectively threadedly connected to the first connection hole and the second connection hole.

7. The impeller fixing structure according to claim 6, wherein a groove is formed in a position, close to the first connecting hole, of an outer side wall of the fixing ring, the first connecting hole is communicated with the groove, one end of the second screw is arranged in the groove, and the other end of the second screw is arranged in the second connecting hole after penetrating through the first connecting hole.

8. The impeller fixing structure according to claim 1, wherein the impeller includes a plurality of blades, and the plurality of blades are circumferentially distributed on an outer side of the hub.