CN216554365U - Screw pump and ceramic rotor thereof - Google Patents
Screw pump and ceramic rotor thereof Download PDFInfo
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- CN216554365U CN216554365U CN202123097548.7U CN202123097548U CN216554365U CN 216554365 U CN216554365 U CN 216554365U CN 202123097548 U CN202123097548 U CN 202123097548U CN 216554365 U CN216554365 U CN 216554365U
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Abstract
The utility model discloses a screw pump and a ceramic rotor thereof, wherein the ceramic rotor comprises a ceramic rotor body and a rotor connecting sleeve, and the ceramic rotor body comprises a rotor connecting part and a spiral section; the rotor connecting part is a cylinder with a polygonal cross section, and the rotor connecting sleeve is provided with an accommodating cavity which can be matched and connected with the rotor connecting part; the rotor connecting sleeve is made of metal. The ceramic rotor is designed to comprise a ceramic rotor body and a rotor connecting sleeve, the rotor connecting sleeve is made of metal materials, the ceramic rotor body made of ceramic materials can be prevented from being perforated, the problem of breakage caused by perforating operation is solved easily, and the yield of product processing is improved. Simultaneously, this structure makes the connection between ceramic rotor and the stator can be the close fit relation to can avoid the serious problem of wearing and tearing that the clearance connection relation leads to, all have great improvement to the reliability and the life of product.
Description
Technical Field
The utility model relates to the technical field of screw pumps, in particular to a screw pump and a ceramic rotor thereof.
Background
In recent years, with the development of new energy, automotive electronics, electromechanical and other industries, various electronic and electrical products and electromechanical products need to be encapsulated with glue to achieve the performance and index of the products, and fillers are added into the glue to achieve the purposes of fixing, sealing and heat dissipation. Because the characteristics of the glue are required to be conveyed and metered by adopting a screw pump, the screw pump rotor is generally made of ceramic materials instead of metal materials in order to increase the wear resistance of the rotor, and because the tail end of the screw pump rotor needs to be provided with a hole to be matched with a pin shaft and then connected with a transmission shaft to work, the structure of the common screw pump rotor is shown in figure 7, and the design has the following problems: 1. the processing yield of the product is low, and the cost is high. 2. The reliability of the product is poor and the service life is short, and therefore, improvements are continuously made.
The above background disclosure is only for the purpose of assisting in understanding the inventive concepts and technical solutions of the present application and does not necessarily pertain to the prior art of the present application, and should not be used to assess the novelty and inventive step of the present application in the absence of explicit evidence to suggest that such matter has been disclosed at the filing date of the present application.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a ceramic rotor for a screw pump, which comprises a ceramic rotor body and a rotor connecting sleeve, wherein the ceramic rotor body comprises a rotor connecting part and a spiral section, the spiral section is in an eccentric spiral shape, and the center of the spiral circle of the spiral section is eccentrically arranged with the center of a base circle according to a preset distance;
the rotor connecting part is a cylinder with a polygonal cross section, and the rotor connecting sleeve is provided with an accommodating cavity which can be matched and connected with the rotor connecting part;
the rotor connecting sleeve is made of metal and is further provided with a pin shaft hole, and the pin shaft hole is formed in one end of the accommodating cavity.
The utility model may also employ the following alternatives/preferences:
the center of the base circle of the rotor connecting part is concentric with the center of the rotor connecting sleeve.
The ceramic rotor body further comprises a rotor base, and the rotor base is arranged between the rotor connecting portion and the spiral section and is in an annular boss shape.
The length of the rotor base along the axial direction is smaller than that of the rotor connecting part and smaller than that of the spiral section.
The cross section of the rotor connecting part is quadrilateral.
The pin shaft is matched with the pin shaft hole.
The utility model also provides a screw pump, which comprises a rotor and a stator, wherein the rotor adopts the ceramic rotor for the screw pump.
The beneficial effects of the utility model include:
the ceramic rotor is designed to comprise a ceramic rotor body and a rotor connecting sleeve, the rotor connecting sleeve is made of metal materials, the ceramic rotor body made of ceramic materials can be prevented from being perforated, the problem of breakage caused by perforating operation is solved easily, and the yield of product processing is improved. Simultaneously, this structure makes the connection between ceramic rotor and the stator can be the close fit relation to can avoid the serious problem of wearing and tearing that the clearance connection relation leads to, all have great improvement to the reliability and the life of product.
Drawings
Fig. 1A is an exploded view of a ceramic rotor for a screw pump according to an embodiment of the present invention.
Fig. 1B is a schematic sectional view of a ceramic rotor for the screw pump shown in fig. 1.
Fig. 2 is a schematic sectional view of a spiral section of a ceramic rotor for the screw pump shown in fig. 1.
Fig. 3 is a schematic view of a spiral segment structure of a ceramic rotor for the screw pump shown in fig. 1.
Fig. 4 is a schematic structural view of a rotor sleeve of a ceramic rotor for a screw pump according to an embodiment.
Fig. 5 is a schematic view showing a connection mode of a ceramic rotor for a screw pump according to an embodiment of the present invention.
Fig. 6 is a second schematic view of the connection mode of the ceramic rotor for the screw pump according to the embodiment of the present invention.
Fig. 7 is a schematic structural view of a ceramic rotor of a screw pump of the prior art.
Detailed Description
The present invention is further described with reference to the following figures 1-7 and the detailed description, wherein like reference numerals refer to like parts, unless otherwise specified. It should be emphasized that the following description is merely exemplary in nature and is not intended to limit the scope of the utility model or its application. The background of the present invention may contain background information related to the problem or environment of the present invention and does not necessarily describe the prior art. Accordingly, the inclusion in this background section is not an admission by the applicant that prior art is available.
Example one
Because the texture of the ceramic material is very fragile, the ceramic rotor is easy to crack during the hole opening, the processing yield is low, and the direct cost and the time cost are both greatly increased. In addition, because the ceramic via hole cannot be in interference fit, a gap exists between the pin shaft and the through hole, the existence of the gap can lead the pin shaft to be easily abraded, the reliability in working is reduced, the pin shaft can be prematurely broken, and the like, based on the technical scheme, the ceramic rotor for the screw pump comprises a ceramic rotor body and a rotor connecting sleeve, the ceramic rotor body comprises a rotor connecting part and a spiral section, the appearance of the spiral section is in an eccentric spiral shape, and the center of the spiral section and the center of a base circle are eccentrically arranged according to a preset distance; the rotor connecting part is a cylinder with a polygonal cross section, and the rotor connecting sleeve is provided with an accommodating cavity which can be matched and connected with the rotor connecting part; the rotor connecting sleeve is made of metal and is further provided with a pin shaft hole, and the pin shaft hole is formed in one end of the accommodating cavity. Through reasonable structural design, this embodiment can enough make full use of the ceramic rotor's advantages such as wear-resisting etc. can avoid the problem of above discovery again.
The following is a detailed description of the present embodiment.
Fig. 1A and 1B are sectional views of a ceramic rotor for a screw pump according to an embodiment, which includes a ceramic rotor 1, a rotor connecting sleeve 2, and a pin shaft 3. The ceramic rotor 1 is made of zirconia ceramic, the shape of the ceramic rotor is in an eccentric spiral shape, specifically, the center of the spiral circle and the center of the base circle are eccentrically arranged according to a preset distance E, as shown in FIG. 2, E is more than 0 and less than or equal to 2 mm. The eccentric spiral direction of the ceramic rotor 1 can be clockwise or anticlockwise, and the number of threads is more than two circles.
As shown in fig. 1A and 3, one end of the ceramic rotor 1 is provided with a rotor connection position 11 with a square cross section, and the rotor connection position 11 is connected with the rotor connection sleeve 2. Those skilled in the art will appreciate that the rotor connecting portion 11 with a square cross section can also adopt a quadrilateral with a non-square cross section, and a polygonal structure with other numbers of sides, which can achieve the same or substantially the same technical effect. As shown in fig. 1B, the rotor connecting portion 11 is connected to and concentric with the square connecting hole 21 of the rotor connecting sleeve 2, and an adhesive is preferably applied between the two to tightly connect the two.
As shown in fig. 4, the rotor connecting sleeve 2 is made of metal, one end of the rotor connecting sleeve is provided with a square connecting hole 21, the other end of the rotor connecting sleeve is provided with a pin shaft mounting hole 22, the pin shaft mounting hole 22 is tightly matched or in interference fit with the pin shaft 2, one end of the square connecting hole 21 is matched and connected with the rotating shaft connecting position 11 of the ceramic rotor 1, the other end of the square connecting hole 21 is used for being connected with the flexible transmission shaft 4 or the universal joint 5, and selection can be performed according to actual needs, and the selection is respectively shown in fig. 5 and fig. 6. When the square connecting hole 21 is connected with the flexible shaft 4, the pin shaft 3 is not needed. The pin shaft 3 is preferably a solid cylinder made of metal, and the length of the pin shaft 3 is not less than the outer diameter of the rotor connecting sleeve 2.
The screw pump ceramic rotor 1 of the embodiment is matched with a screw pump wear-resistant stator for use, and compared with a conventional screw pump made of materials, the screw pump can prolong the service life by multiple times.
In another embodiment, the ceramic rotor 1 is further preferably provided with a rotor base 12, as shown in fig. 3, the rotor base 12 is arranged between the spiral section and the rotor connecting position 11, the length of the rotor base 12 is smaller than the length of the spiral section and smaller than the length of the rotor connecting position 11, and the rotor base is used as a reference during machining, so that the machining quality and efficiency can be greatly improved.
Example two
The present embodiment provides a screw pump, comprising a rotor and a stator, wherein the rotor is a ceramic rotor for a screw pump as described above.
The foregoing is a more detailed description of the utility model in connection with specific preferred embodiments and it is not intended that the utility model be limited to these specific details. For those skilled in the art to which the utility model pertains, several equivalent substitutions or obvious modifications can be made without departing from the spirit of the utility model, and all the properties or uses are considered to be within the scope of the utility model.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "preferred embodiments," "an example," "a specific example," or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. Although embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the scope of the claims.
Claims (7)
1. The ceramic rotor for the screw pump is characterized by comprising a ceramic rotor body and a rotor connecting sleeve, wherein the ceramic rotor body comprises a rotor connecting part and a spiral section, the appearance of the spiral section is in an eccentric spiral shape, and the center of the spiral circle of the spiral section is eccentrically arranged with the center of a base circle according to a preset distance;
the rotor connecting part is a cylinder with a polygonal cross section, and the rotor connecting sleeve is provided with an accommodating cavity which can be matched and connected with the rotor connecting part;
the rotor connecting sleeve is made of metal and is further provided with a pin shaft hole, and the pin shaft hole is formed in one end of the accommodating cavity.
2. The ceramic rotor for a screw pump according to claim 1, wherein a center of a base circle of the rotor connection portion is concentrically arranged with a center of the rotor connection sleeve.
3. The ceramic rotor for a screw pump of claim 1, wherein the ceramic rotor body further comprises a rotor base, the rotor base being provided between the rotor connecting portion and the spiral section in the shape of an annular boss.
4. The ceramic rotor for a screw pump according to claim 3, wherein a length of the rotor base in an axial direction is smaller than a length of the rotor connection portion and smaller than a length of the helical section.
5. Ceramic rotor for a screw pump according to any of claims 1-4, wherein the cross-section of the rotor connection is quadrangular.
6. The ceramic rotor for a screw pump of any one of claims 1 to 4, further comprising a pin shaft, wherein the pin shaft is matched with the pin shaft hole.
7. A screw pump comprising a rotor and a stator, wherein the rotor is a ceramic rotor for a screw pump according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123097548.7U CN216554365U (en) | 2021-12-10 | 2021-12-10 | Screw pump and ceramic rotor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123097548.7U CN216554365U (en) | 2021-12-10 | 2021-12-10 | Screw pump and ceramic rotor thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216554365U true CN216554365U (en) | 2022-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123097548.7U Active CN216554365U (en) | 2021-12-10 | 2021-12-10 | Screw pump and ceramic rotor thereof |
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| CN (1) | CN216554365U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116201728A (en) * | 2022-12-22 | 2023-06-02 | 华创机器人制造有限公司 | Special screw pump for submersible screw pump oil extraction machine and manufacturing method |
-
2021
- 2021-12-10 CN CN202123097548.7U patent/CN216554365U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116201728A (en) * | 2022-12-22 | 2023-06-02 | 华创机器人制造有限公司 | Special screw pump for submersible screw pump oil extraction machine and manufacturing method |
| CN116201728B (en) * | 2022-12-22 | 2024-02-13 | 华创机器人制造有限公司 | Special screw pump for submersible screw pump oil extraction machine and manufacturing method |
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