CN213039519U

CN213039519U - Shielding sleeve and shielding pump

Info

Publication number: CN213039519U
Application number: CN202021939420.3U
Authority: CN
Inventors: 熊云; 段长礼; 段军利; 冯细水; 王磊; 李晓冬
Original assignee: Shimge Pump Industry Group Co Ltd
Current assignee: Shimge Pump Industry Group Co Ltd
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2021-04-23
Anticipated expiration: 2030-09-08

Abstract

The utility model belongs to the technical field of the canned pump, concretely relates to shielding cover and canned pump thereof, the shielding cover is the plastics material, the shielding cover is axially extended tubbiness structure, a tip of shielding cover is sealed tip, and a tip is the opening tip in addition, sealed tip be equipped with shielding cover integral type injection moulding's rear bearing, the inside of shielding cover is provided with the metal endotheca with the integrative injection moulding of shielding cover. The plastic shielding sleeve of the utility model has simpler molding and lower price; the metal inner liner of the lining improves the wear resistance of the shielding sleeve, and meanwhile, the whole finished product only needs to be realized on the same mold, the lining and the bearing are placed into an injection mold in advance, and the metal inner liner is formed in one step, is simple to process and is low in cost.

Description

Shielding sleeve and shielding pump

Technical Field

The utility model relates to a canned motor pump technical field, concretely relates to housing and canned motor pump.

Background

Chinese patent, publication number CN 209621701U, name are a housing and have pump package spare of this housing, specifically disclose the housing is the plastics material, the housing is the tubbiness structure of axial extension, a tip that the pump body was kept away from to the housing is sealed tip, sealed tip be equipped with housing integral type injection moulding's rear bearing, a tip that the housing is close to the pump body is equipped with annular opening, annular opening's opening size is greater than the lateral wall size of housing, annular opening with the combination department of housing is equipped with arc connecting portion. The utility model provides a shield cover comprises the plastics material, consequently, shield cover will produce minimum eddy current loss, and this will make permanent-magnet machine's high efficiency further improved, and modified shield cover mounting structure low in manufacturing cost simultaneously, and resistance to wear is strong.

The housing mainly adopts the plastics material processing to form in the above-mentioned patent, and although the advantage is numerous, in the in-service use process, because the aquatic has impurity, leads to the wearing feature variation of plastics housing, has reduced canned motor pump's result of use extremely life, needs the improvement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a housing and canned motor pump to carry the wearability of housing, further promote its life.

In order to solve the technical problem, the utility model provides a shielding sleeve, shielding sleeve is the plastics material, shielding sleeve is axially extended's tubbiness structure, a tip of shielding sleeve is sealed tip, and a tip is the opening end in addition, sealed tip be equipped with shielding sleeve integral type injection moulding's rear bearing, shielding sleeve's inside is provided with the metal endotheca with shielding sleeve an organic whole injection moulding.

Furthermore, the metal inner sleeve, the rear bearing and the shielding sleeve are on the same axis.

Further, the metal inner sleeve is made of stainless steel.

Furthermore, a limiting structure used for limiting the metal inner sleeve to axially or radially move along the shielding sleeve is arranged on the side wall of the metal inner sleeve.

Furthermore, the limiting structure is a groove formed in the top and the bottom of the side wall of the metal inner sleeve.

Further, the groove is a U-shaped groove.

Furthermore, the inner wall of the shielding sleeve is provided with a protrusion embedded into the U-shaped groove.

Furthermore, the protruding edge is tightly combined with the inner wall of the U-shaped groove.

In another aspect, the present invention further provides a canned motor pump, wherein the canned motor cover is installed outside the electronic rotor of the canned motor pump.

The utility model has the advantages that;

1. the metal inner sleeve and the shielding sleeve made of plastic are directly injection molded, so that the wear resistance of the shielding sleeve is improved, and the defects of difficult molding and high price of the shielding sleeve produced by stainless steel are reduced;

2. a limiting structure for preventing the axial and radial movement is arranged on the metal inner sleeve, so that the stability of the metal inner sleeve in the shielding sleeve is higher, and meanwhile, the rear bearing is directly formed by injection molding, so that the process of pressing the bearing is omitted when the shielding sleeve is used; the whole shielding sleeve assembly is integrated and directly used.

3. The whole shielding sleeve is realized on the same die only, the metal inner sleeve and the rear bearing are placed into an injection mold in advance, and the shielding sleeve is formed at one time and is more convenient to process.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a cross-sectional view of the present invention;

FIG. 2 is a schematic view of a three-dimensional structure of a metal inner sleeve of the present invention;

fig. 3 is a schematic perspective view of the shielding case.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

Example 1

As shown in fig. 1 to 3, embodiment 1 provides a shielding sleeve, where the shielding sleeve 1 is made of a plastic material, the shielding sleeve 1 is a barrel-shaped structure extending axially, one end of the shielding sleeve 1 is a sealed end 11, the other end is an open end 12, the sealed end 11 is provided with a rear bearing 2 injection-molded integrally with the shielding sleeve 1, a metal inner sleeve 3 injection-molded integrally with the shielding sleeve 1 is disposed inside the shielding sleeve 1, during processing, the rear bearing 2 and the metal inner sleeve are first placed in a mold, and then the plastic material is poured to form the shielding sleeve 1, the rear bearing 2 and the metal inner sleeve 3 by injection molding, the whole product only needs to be realized on the same mold, and the plastic shielding sleeve is simpler to mold and cheaper in price; the metal inner sleeve ensures the wear resistance of the shielding sleeve.

As a preferable mode of the present embodiment, the metal inner sleeve 3, the rear bearing 2 and the shield sleeve 1 are coaxial, so that the friction between the rotor and the metal inner sleeve 3 during the rotation process is prevented, and the use safety of the shield pump is improved.

As a preferable mode of this embodiment, the metal inner sleeve 3 is stainless steel, so that it is corrosion-resistant, rust-resistant, wear-resistant, and has a long service life.

As a preferable mode of this embodiment, a limiting structure for limiting the axial or radial movement of the metal inner sleeve 3 along the shielding sleeve 1 is disposed on a side wall of the metal inner sleeve 3, so that the stability of the metal inner sleeve 3 inside the shielding sleeve 1 is higher.

As a preferred mode of this embodiment, the limiting structure is the grooves 31 formed at the top and the bottom of the side wall of the metal inner sleeve 3, the processing technology is simple, and the clamping is firm and reliable.

As a preferable mode of this embodiment, the groove 31 is a U-shaped groove.

As a preferable mode of this embodiment, the inner wall of the shielding sleeve 1 is provided with a protrusion 13 embedded in the U-shaped groove, and an edge of the protrusion 13 is tightly combined with the inner wall of the U-shaped groove, so as to improve the connection tightness and increase the connection firmness of the metal inner sleeve 3 and the shielding sleeve 1.

Example 2

On the basis of embodiment 1, embodiment 2 further provides a canned motor pump, and the canned motor pump is provided with the canned motor sleeve as described above.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a shield cover, the shield cover is the plastics material, the shield cover is axial extension's tubbiness structure, a tip of shield cover is sealed tip, and a tip is the opening end portion in addition, sealed tip be equipped with shield cover integral type injection moulding's rear bearing, its characterized in that, the inside of shield cover is provided with the metal endotheca with the integrative injection moulding of shield cover.

2. The shielding sleeve of claim 1, wherein;

the metal inner sleeve, the rear bearing and the shielding sleeve are on the same axis.

3. The shielding sleeve of claim 1, wherein;

the metal inner sleeve is made of stainless steel.

4. The shielding sleeve of claim 1, wherein;

and a limiting structure for limiting the metal inner sleeve to axially or radially move along the shielding sleeve is arranged on the side wall of the metal inner sleeve.

5. The shielding sleeve of claim 4, wherein;

the limiting structure is a groove formed in the top and the bottom of the side wall of the metal inner sleeve.

6. The shielding sleeve of claim 5, wherein;

the groove is a U-shaped groove.

7. The shielding sleeve of claim 6, wherein;

the inner wall of the shielding sleeve is provided with a protrusion embedded into the U-shaped groove.

8. The shielding sleeve of claim 7, wherein;

the convex edge is tightly combined with the inner wall of the U-shaped groove.

9. A canned motor pump characterized in that the canned motor of any of claims 1 to 8 is mounted on the outside of the motor rotor of the canned motor pump.