CN113847268B

CN113847268B - Locking subassembly and magnetic drive pump thereof

Info

Publication number: CN113847268B
Application number: CN202110985173.3A
Authority: CN
Inventors: 孙元武; 牟龙龙; 刘华中; 周建全; 矫文玉; 宋令芹
Original assignee: Yantai Humon Pumps Co ltd
Current assignee: Yantai Humon Pumps Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2024-03-19
Anticipated expiration: 2041-08-25
Also published as: CN113847268A

Abstract

The invention discloses a locking assembly and a magnetic drive pump thereof, wherein the locking assembly comprises a locking nut and a locking snap ring which are connected in a pressing way and matched with each other, the locking nut and the locking snap ring can be sleeved on a shaft, one end of the locking nut is close to a part to be locked, and the locking snap ring applies radial locking force to the other end of the locking nut; according to the invention, a radial locking force is applied to the outer side of the locking nut, so that the anti-rotation effect of the locking nut is better; furthermore, by adopting a wedge-shaped inclined plane mode, the lock nut is not only subjected to radial locking force, but also subjected to axial thrust, and the anti-rotation effect is further enhanced; the magnetic pump comprises an impeller, a thrust bearing, a shaft sleeve component and a locking component which are sequentially arranged at one end of a shaft, and the shaft sleeve component, the thrust bearing, an inner magnetic rotor and the locking component which are sequentially arranged at the other end of the shaft; the nut falling-off phenomenon can be completely and effectively avoided in the actual use process.

Description

Locking subassembly and magnetic drive pump thereof

Technical Field

The invention relates to the technical field of pump equipment, in particular to a locking assembly and a magnetic drive pump thereof.

Background

The reasons for the impeller end and the inner magnetic end nut to fall off when the magnetic pump operates are mainly as follows: 1. when the magnetic pump stops using, the liquid in the outlet pipeline automatically flows back, so that the pump runs reversely, and the nut falls off. 2. When the magnetic pump is in actual use, the fastening nut is damaged by screw threads caused by repeated assembly and disassembly or abnormal assembly and disassembly, and the nut falls off due to improper use; 3. when the magnetic pump runs, foreign matters are fed into the magnetic pump, or the magnetic pump is improperly installed and used, so that the nut falls off due to vibration of the magnetic pump. 4. And falling off caused by other reasons.

In the normal operation process of the magnetic pump in the use process of the magnetic pump, each part of the pump rotor assembly is required to be compacted gradually, so that the safe and reliable operation of the magnetic pump is ensured. Years of experience shows that the anti-loosening device used in the market is not ideal in effect, and the locking nuts at the impeller end and the inner magnetic rotor end can fall off due to various reasons in the actual operation process, so that the anti-loosening device has the following anti-loosening modes in the market: 1. either the flat washer or the spring washer, or both, are applied more often, but the spring washer has a lower ability to relax. 2. A stop washer with a tongue, which form of a locking lock can be used in conventional cases, but is particularly prone to shearing when started and stopped frequently. 3. The double nuts are used for preventing loosening, and if the mode is operated improperly, the practical use effect is poor. 4. The nut locking liquid is used, so that the use is simple, but the disassembly is difficult; 5. other anti-loosening modes. The nut falls off during the operation of the pump is a dangerous behavior and is very easy to cause the magnetic pump to be unable to operate normally.

Disclosure of Invention

The invention aims to overcome the defects and shortcomings of the prior art, provides a locking assembly and a magnetic pump thereof, and solves the problem that nuts fall off due to the reasons of nut thread damage caused by reverse rotation and abnormal assembly and disassembly of the magnetic pump and vibration caused by abnormal operation of the pump in the background art.

In order to achieve the above object, the present invention provides the following solutions: the invention provides a locking assembly which comprises a locking nut and a locking snap ring which are connected in a pressing mode and matched with each other, wherein the locking nut and the locking snap ring can be sleeved on a shaft, one end of the locking nut is close to a part to be locked, and the locking snap ring applies radial locking force to the other end of the locking nut.

Preferably, the locking snap ring comprises a first clamping block and a second clamping block which are connected through a locking part, a first shaft hole for a shaft to pass through is arranged between the first clamping block and the second clamping block, wedge-shaped inclined planes are arranged on the first clamping block and the second clamping block, and the two wedge-shaped inclined planes form a horn-shaped opening; the locking nut is provided with a threaded hole in threaded connection with the shaft, and is provided with a conical clamping surface which is clamped with the horn-shaped opening.

Preferably, the conical clamping surface is arranged at one end of the locking nut, and the other end of the locking nut is a plane.

Preferably, the locking part is a locking screw, and the locking screws are symmetrically arranged at two sides of the locking clamping ring.

The invention also provides a magnetic pump applying the anti-loosening assembly, wherein one end of a shaft is sequentially provided with the impeller, the thrust bearing, the shaft sleeve assembly and the anti-loosening assembly, and the other end of the shaft is sequentially provided with the shaft sleeve assembly, the thrust bearing, the inner magnetic rotor and the anti-loosening assembly.

Compared with the prior art, the invention has the following beneficial effects:

1. the anti-loosening assembly disclosed by the invention adopts a mode of applying radial locking force to the outer side of the locking nut, so that the anti-rotation effect of the locking nut is better; furthermore, by adopting a wedge-shaped inclined plane mode, the lock nut is not only subjected to radial locking force, but also subjected to axial thrust, and the anti-rotation effect is further enhanced;

2. the anti-loosening assembly is convenient to assemble and use, simple to operate, safe and reliable, good practice is achieved in the process of multiple use, and the nut falling phenomenon can be completely and effectively avoided in the actual use process.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the connection structure of the parts in a magnetic pump;

FIG. 2 is a schematic view of the anti-loosening assembly of FIG. 1;

the impeller comprises an impeller 1, a thrust bearing 2.1, a shaft sleeve assembly 3.1, a shaft 4, a shaft sleeve assembly 3.2, a thrust bearing 2.2, an inner magnetic rotor 5, a locking clamping ring 6.1, a locking nut 7.1, a locking nut 7.2 and a locking clamping ring 6.2.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.

As shown in fig. 1-2, the invention provides a locking assembly, which comprises a locking nut 7.2 and a locking snap ring 6 which are connected in a pressing manner and matched with each other, wherein the locking nut 7.2 and the locking snap ring 6 can be sleeved on a shaft, one end of the locking nut 7.2 is close to a part to be locked, and the locking snap ring 6 applies radial locking force to the other end of the locking nut 7.2. Wherein, locking snap ring 6 keeps the cover to establish on the axle to compress tightly lock nut 7.2, compress tightly the form and can set up a plurality of pressure strips on locking snap ring 6, pressure strip and lock nut 7.2 surface contact, or other structures that can realize radial compaction, also can be the structure as shown below:

as a preferred embodiment, the locking clasp 6 of the present invention comprises a first clamping block and a second clamping block connected by a locking portion, a first shaft hole for passing a shaft is provided between the first clamping block and the second clamping block, wedge-shaped inclined surfaces are provided on the first clamping block and the second clamping block, and the two wedge-shaped inclined surfaces form a horn-shaped opening; the lock nut 7.2 is provided with a threaded hole in threaded connection with the shaft, and the lock nut 7.2 is provided with a conical clamping surface which is clamped with the horn-shaped opening. Namely, a radial locking force is applied to the outer side of the lock nut, so that the anti-rotation effect of the lock nut is better; furthermore, the wedge-shaped inclined plane is adopted, so that the lock nut is not only subjected to radial locking force, but also subjected to axial thrust, and the anti-rotation effect is further enhanced.

In order to ensure the effects of locking the lock nut 7.2 and propping up the impeller, the conical clamping surface is arranged at one end of the lock nut 7.2, the other end of the lock nut 7.2 is a plane, and the contact area between the plane and the impeller is increased.

In order to ensure the fixing effect, the locking parts are locking screws which are symmetrically arranged at two sides of the locking clamping ring 6.

The invention also provides a magnetic pump applying the anti-loosening assembly, wherein one end of a shaft is sequentially provided with an impeller 1, a thrust bearing 2.1, a shaft sleeve assembly 3.1 and the anti-loosening assembly, and the other end of the shaft is sequentially provided with the shaft sleeve assembly 3.1, the thrust bearing 2.2, an inner magnetic rotor and the anti-loosening assembly; the impeller 1, the thrust bearing 2.1 and the sleeve assembly 3.1 are respectively and sequentially arranged at the left end of the shaft 4 according to the illustrated sequence. The lock nut 7.2 is then tightened. Likewise, the sleeve assembly 3.2, the thrust bearing 2.2, and the inner magnetic rotor 5 are respectively fitted into the right end of the shaft 4 in the illustrated order, and then the lock nut 7.2 is tightened. The locking snap ring 6 is arranged at two ends of the shaft 4, the locking snap ring 6 is contacted with the a surface and the b surface of the locking nut 7.2, and the locking snap ring 6 is fastened by using an inner hexagon screw. The tightened lock nut 7.2 is fixed secondarily by utilizing the inclined plane, the nut is ensured not to fall off in the operation process of the pump, and the normal operation of the magnetic pump is realized.

The principle and the implementation mode of the invention are explained by applying specific examples, and the above examples are only used for helping to understand the multifunctional wheelchair and the core thought thereof; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.

Claims

1. The anti-loosening assembly is characterized by comprising a locking nut and a locking snap ring which are connected in a pressing manner and matched with each other, wherein the locking nut and the locking snap ring can be sleeved on a shaft, one end of the locking nut is close to a part to be locked, and the locking snap ring applies radial locking force to the other end of the locking nut;

the locking clamp ring comprises a first clamping block and a second clamping block which are connected through a locking part, a first shaft hole for a shaft to pass through is arranged between the first clamping block and the second clamping block, wedge-shaped inclined planes are arranged on the first clamping block and the second clamping block, and the two wedge-shaped inclined planes form a horn-shaped opening; the locking nut is provided with a threaded hole in threaded connection with the shaft, and is provided with a conical clamping surface which is clamped with the horn-shaped opening.

2. The locking assembly of claim 1, wherein the tapered snap-fit surface is disposed at one end of the lock nut and the other end of the lock nut is planar.

3. The locking assembly of claim 2, wherein the locking portion is a locking screw symmetrically disposed on both sides of the locking collar.

4. A magnetic pump using the anti-loose assembly according to any one of claims 1 to 3, wherein an impeller, a thrust bearing, a shaft sleeve assembly and the anti-loose assembly are sequentially installed at one end of a shaft, and the shaft sleeve assembly, the thrust bearing, an inner magnetic rotor and the anti-loose assembly are sequentially installed at the other end of the shaft.