Impeller configuration structure of self-balancing multi-stage pump

Abstract

The utility model belongs to the technical field of self-balancing multi-stage pumps, and particularly relates to an impeller configuration structure of a self-balancing multi-stage pump, which comprises a rotating shaft, positive impellers, negative impellers and a supporting piece, wherein the positive impellers are uniformly arranged at one end of the rotating shaft; the supporting piece is arranged on the rotating shaft, the supporting piece is arranged between the forward impeller and the reverse impeller in a separated mode, the forward impeller and the reverse impeller are separated through the supporting piece, abrasion caused by position deviation during rotation of the forward impeller and the reverse impeller is avoided, the forward impeller and the reverse impeller are opposite in direction, rotation balance is guaranteed, and the pump body pumps materials stably.

Description

Technical Field

[0001] The utility model relates to the technical field of self-balancing multistage pumps, and particularly relates to an impeller configuration structure of a self-balancing multistage pump. Background Art

[0002] A self-balancing multistage pump is a power device for conveying, adopting an advanced hydraulic model and independently developing high-efficiency and energy-saving products; since the rotor of the self-balancing symmetric multistage pump has no wear and axial pulsation of the balance disk, the centering of the impeller and the diffuser is always in the best state, and it will not show a significant decrease in efficiency like the structure of a common multistage pump with the wear of the balance disk and the forward movement of the rotor components; moreover, there is no leakage of balance water, reducing the volumetric loss, improving the overall operating efficiency of the pump, reducing the shaft power, and being on average 2%-3% more efficient than a common multistage pump.

[0003] When the existing self-balancing multistage pump is in use, multiple impellers are connected to the rotating shaft. When the impellers rotate, they are prone to offset, causing the impellers to wear when approaching the pump casing. For this reason, this application proposes an impeller configuration structure of a self-balancing multistage pump. Summary of the Utility Model

[0004] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Simplifications or omissions may be made in this part, as well as in the abstract of the specification and the title of the utility model of this application, to avoid obscuring the purpose of this part, the abstract of the specification, and the title of the utility model. However, such simplifications or omissions shall not be used to limit the scope of the utility model.

[0005] In view of the above and / or problems existing in the impeller configuration structure of the existing self-balancing multistage pump, the present utility model is proposed.

[0006] Therefore, the purpose of the present utility model is to provide an impeller configuration structure of a self-balancing multistage pump, which uses a support member to separate the positive impellers from each other and the reverse impellers from each other, avoiding wear caused by the position offset of the positive impellers and the reverse impellers during rotation. The positive impellers and the reverse impellers are in opposite directions, ensuring the balance of rotation and enabling the pump body to stably pump materials.

[0007] To solve the above technical problems, according to one aspect of the present utility model, the following technical solutions are provided:

[0008] An impeller configuration structure of a self-balancing multistage pump, comprising:

[0009] A rotating shaft,

[0010] Positive impellers, evenly arranged at one end of the rotating shaft;

[0011] Reverse impellers, evenly arranged at the other end of the rotating shaft;

[0012] The support member is arranged on the rotating shaft, and the support member is separated between the positive impeller and the reverse impeller.

[0013] As a preferred solution of the impeller configuration structure of a self-balancing multi-stage pump according to the present invention, wherein: the support member includes a support spring, a support ring and a ball, the support rings are arranged at both ends of the support spring, and the balls are arranged on the outer side wall of the support ring.

[0014] As a preferred solution of the impeller configuration structure of a self-balancing multi-stage pump according to the present invention, wherein: a positive guide wheel is arranged outside the positive impeller, and a reverse guide wheel is arranged outside the reverse impeller.

[0015] As a preferred solution of the impeller configuration structure of a self-balancing multi-stage pump according to the present invention, wherein: key grooves are arranged between the rotating shaft and the positive impeller and the reverse impeller, and connecting keys are arranged in the key grooves.

[0016] As a preferred solution of the impeller configuration structure of a self-balancing multi-stage pump according to the present invention, wherein: uniformly distributed rolling grooves are formed on the outer wall of the support ring, and the balls are embedded in the rolling grooves.

[0017] As a preferred solution of the impeller configuration structure of a self-balancing multi-stage pump according to the present invention, wherein: the rotating shaft adopts an integral stepped shaft, and bearings are arranged at both ends of the rotating shaft.

[0018] As a preferred solution of the impeller configuration structure of a self-balancing multi-stage pump according to the present invention, wherein: both ends of the spring are respectively fixed on the support rings at both ends.

[0019] Compared with the prior art: in the present invention, support members are arranged between the positive impellers and between the reverse impellers, and the support members are used to separate between the positive impellers and between the reverse impellers, so as to prevent the positive impeller and the reverse impeller from wearing due to position deviation during rotation. The directions of the positive impeller and the reverse impeller are opposite, which ensures the balance of rotation and enables the pump body to stably pump materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the drawings and detailed embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0021] Figure 1 is the axonometric structure schematic diagram of the present invention;

[0022] Figure 2 is the structure schematic diagram of the support member of the present invention.

[0023] In the figure: 100 is the rotating shaft, 200 is the positive impeller, 210 is the positive guide wheel, 300 is the reverse impeller, 310 is the reverse guide wheel, 400 is the support member, 410 is the support spring, 420 is the support ring, and 430 are the ball bearings. Specific Embodiment

[0024] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific embodiments of the present utility model with reference to the accompanying drawings.

[0025] In the following description, many specific details are set forth to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0026] Secondly, the present utility model will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present utility model in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally not in accordance with the general scale, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0027] To make the purpose, technical solution, and advantages of the present utility model clearer, the following will further describe in detail the embodiments of the present utility model with reference to the accompanying drawings.

[0028] The present utility model provides an impeller configuration structure for a self-balancing multistage pump. The support member is used to separate the positive impellers from the reverse impellers, avoiding wear caused by the position deviation during the rotation of the positive impellers and the reverse impellers. The directions of the positive impellers and the reverse impellers are opposite, ensuring the balance of rotation and enabling the pump body to stably pump materials. Please refer to Figure 1 - Figure 2 , which includes: a rotating shaft 100, a positive impeller 200, a reverse impeller 300, and a support member 400.

[0029] The positive impellers 200 are evenly arranged at one end of the rotating shaft 100;

[0030] The reverse impellers 300 are evenly arranged at the other end of the rotating shaft 100;

[0031] The support member 400 is arranged on the rotating shaft 100. The support member 400 is located between the positive impeller 200 and the reverse impeller 300. As a separating member, the support member 400 separates the evenly distributed positive impellers 200 and reverse impellers 300, ensuring an appropriate distance between the positive impeller 200 and the reverse impeller 300.

[0032] Specifically, the support member 400 includes a support spring 410, a support ring 420, and a ball 430. Support rings 420 are provided at both ends of the support spring 410, and balls 430 are provided on the outer side wall of the support ring 420.

[0033] Among them, evenly distributed rolling grooves are formed on the outer wall of the support ring 420, and the balls 430 are embedded in the rolling grooves. Both ends of the spring 410 are respectively fixed on the support rings 420 at both ends. Elastic support is provided through the support spring 410 to prevent the structure from sliding. After the structure slides, it can be supported and reset to ensure the distance between the positive impeller 200 and the negative impeller 300.

[0034] To protect the positive impeller 200 and the negative impeller 300, a positive guide wheel 210 is provided outside the positive impeller 200, and a negative guide wheel 310 is provided outside the negative impeller 300. The positive guide wheel 210 and the negative guide wheel 310 are used to cover the outside of the positive impeller 200 and the negative impeller 300 for protection.

[0035] Since the positive impeller 200 and the negative impeller 300 need to rotate following the rotating shaft 100, key grooves are provided between the rotating shaft 100 and the positive impeller 200 and the negative impeller 300, and connection keys are provided in the key grooves. The positive impeller 200 and the negative impeller 300 rotate following the rotating shaft 100 through the connection keys.

[0036] During specific use, the rotating shaft 100 drives the positive impeller 200 and the negative impeller 300 to rotate. The support member 400 serves as a separator to separate the evenly distributed positive impellers 200 and negative impellers 300, ensuring an appropriate distance between the positive impeller 200 and the negative impeller 300. Elastic support is provided through the support spring 410 to prevent the structure from sliding. After the structure slides, it can be supported and reset to ensure the distance between the positive impeller 200 and the negative impeller 300. The positive impeller 200 and the negative impeller 300 are in opposite directions to ensure the balance of rotation and enable the pump body to pump materials stably.

[0037] Although the present invention has been described above with reference to the embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the disclosed embodiments of the present invention can be combined with each other in any way. The exhaustive description of these combinations is omitted in this specification only for the sake of saving space and resources. Therefore, the present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. An impeller configuration structure of a self-balancing multistage pump, characterized in that: include: A rotating shaft (100), A positive impeller (200) is evenly arranged at one end of the rotating shaft (100); The counter-impeller (300) is evenly arranged at the other end of the rotating shaft (100); The support member (400) is arranged on the rotating shaft (100), and the support member (400) is located between the positive impeller (200) and the negative impeller (300).

2. The impeller configuration structure of a self-balancing multi-stage pump according to claim 1, characterized in that: The support member (400) comprises a support spring (410), a support ring (420) and a ball (430); support rings (420) are arranged at both ends of the support spring (410); and the ball (430) is arranged on the outer side wall of the support ring (420).

3. The impeller configuration structure of a self-balancing multistage pump according to claim 1, characterized in that: A positive guide wheel (210) is arranged outside the positive impeller (200), and a negative guide wheel (310) is arranged outside the negative impeller (300).

4. The impeller configuration structure of a self-balancing multi-stage pump according to claim 1, characterized in that: A keyway is provided between the rotating shaft (100) and the positive impeller (200) and the reverse impeller (300), and a connecting key is provided in the keyway.

5. The impeller configuration structure of a self-balancing multi-stage pump according to claim 2, characterized in that: The outer wall of the support ring (420) is provided with evenly distributed rolling grooves, and the balls (430) are embedded in the rolling grooves.

6. The impeller configuration structure of a self-balancing multi-stage pump according to claim 1, characterized in that: The rotating shaft (100) is an integrated stepped shaft, and bearings are provided at both ends of the rotating shaft (100).

7. The impeller configuration structure of a self-balancing multi-stage pump according to claim 2, characterized in that: Two ends of the spring (410) are respectively fixed on supporting rings (420) at two ends.

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