Rod pin type rotor structure

Abstract

A rod pin type rotor structure comprises an inner rotor, an outer rotor and a stator, the inner rotor is arranged in an inner cavity of the stator, the outer rotor is arranged outside the stator, the outer rotor and the inner rotor are coaxially installed and fixed through bolts, and a plurality of micropores are evenly formed in the side wall of the stator; the inner rotor comprises a turntable and a plurality of rod pins, a mounting shaft hole is formed in the center of the turntable, the rod pins are uniformly and vertically mounted on the outer edge of the surface of the turntable, grinding teeth are arranged on the outer side surfaces of the rod pins, a plurality of rows of grinding tooth grooves are uniformly formed in the inner side wall of the stator, and the grinding teeth are meshed with the grinding tooth grooves. According to the utility model, the defects in the prior art are overcome, the abrasiveness of materials can be ensured, and meanwhile, the problem that micropores in the surface of the stator are blocked is effectively avoided. And therefore, the large-flow conveying effect of the centrifugal pump is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal pumps, and particularly relates to a pin - type rotor structure. Background Art

[0002] Centrifugal pumps are the most widely used pump type in the pump industry, and their usage accounts for about 70% of the entire pump industry. For flows above 1000 m 3 / h, ultra - large centrifugal pumps are required.

[0003] However, centrifugal pumps themselves do not have a cutting ability. And after cutting, it is still necessary to prevent entanglement. This is a characteristic of high - shear, but generally high - shear is difficult to meet its large - flow requirements. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a pin - type rotor structure, which overcomes the deficiencies of the prior art, is reasonably designed, can not only ensure the grindability of materials, but also effectively avoid the problem of micropore blockage on the surface of the stator. Thereby ensuring the large - flow conveying effect of the centrifugal pump.

[0005] To achieve the above objectives, the utility model is realized through the following technical solutions:

[0006] A pin - type rotor structure includes an inner rotor, an outer rotor and a stator. The inner rotor is arranged in the inner cavity of the stator. The outer rotor is arranged outside the stator, and the outer rotor and the inner rotor are coaxially installed and fixed by bolts. A number of micropores are evenly arranged on the side wall of the stator;

[0007] The inner rotor includes a turntable and a plurality of pin - type rods. An installation shaft hole is arranged at the center of the turntable. Each pin - type rod is evenly and perpendicularly installed at the outer edge position of the turntable surface. Grinding teeth are arranged on the outer side surface of each pin - type rod. A plurality of rows of grinding tooth grooves are evenly arranged on the inner side wall of the stator, and the grinding teeth are engaged with each grinding tooth groove.

[0008] Preferably, a plurality of installation holes are evenly arranged at a position of the turntable close to the outer circumference, and the end of the pin - type rod is fixedly welded in the corresponding installation hole.

[0009] Preferably, both the inner rotor and the outer rotor are coaxially arranged with the stator.

[0010] The utility model provides a rod pin type rotor structure, which has the following beneficial effects: during use, trace long strip soft materials in the liquid are intercepted by the micropores on the surface of the stator. When the inner rotor rotates inside the stator, the grinding teeth on the outer side surfaces of the rod pins on the inner rotor can shear with the grinding tooth grooves on the inner side wall of the stator. Thus, when the rod pins quickly pass through the micropores on the surface of the stator, the long strip soft materials are pulled and torn, which can not only ensure the grinding property of the materials, but also effectively avoid the problem of blockage of the micropores on the surface of the stator. In addition, since each rod pin is in a rod shape, it will not cause too much obstruction to the flow rate, thus effectively ensuring the large flow rate conveying effect of the centrifugal pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the prior art.

[0012] Figure 1 Structural schematic diagram of the present utility model;

[0013] Figure 2 Structural schematic diagram of the inner rotor in the present utility model;

[0014] Figure 3 Cross-sectional schematic diagram of the inner rotor in the present utility model;

[0015] Figure 4 Structural schematic diagram of the stator in the present utility model;

[0016] Description of the reference numerals in the drawings:

[0017] 1, inner rotor; 2, outer rotor; 3, stator; 4, micropores; 11, turntable; 12, rod pin; 13, grinding teeth; 14, mounting hole; 31, grinding tooth groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] To make the objectives, technical solutions and advantages of the present utility model clearer, the following will clearly and completely describe the technical solutions in the present utility model with reference to the drawings in the present utility model.

[0019] Embodiment 1, as Figures 1-4 shown, a rod pin type rotor structure includes an inner rotor 1, an outer rotor 2 and a stator 3. The inner rotor 1 is arranged in the inner cavity of the stator 3, the outer rotor 2 is arranged outside the stator 3, and the outer rotor 2 and the inner rotor 1 are coaxially installed and fixed by bolts. A plurality of micropores 4 are evenly formed on the side wall of the stator 3; among them, both the inner rotor 1 and the outer rotor 2 are coaxially arranged with the stator 3.

[0020] The inner rotor 1 includes a turntable 11 and a plurality of pin rods 12. An installation shaft hole 13 is provided at the center of the turntable 11. Each pin rod 12 is vertically and evenly installed at the outer edge position of the surface of the turntable 11. Grinding teeth 13 are provided on the outer side surfaces of the pin rods 12. A plurality of rows of grinding tooth grooves 31 are evenly provided on the inner side wall of the stator 3. The grinding teeth 13 are engaged with the grinding tooth grooves 31.

[0021] Working principle:

[0022] During installation, the pin rod type rotor structure of this embodiment is installed in the inner cavity of the pump housing of the centrifugal pump. Specifically, the stator 3 is installed in the inner cavity of the pump housing, and then the inner rotor 1 is coaxially installed on the outer surface of the motor rotating shaft through a key. Also, since the outer rotor 2 and the inner rotor 1 are coaxially installed and fixed through bolts, the outer rotor 2 and the inner rotor 1 can rotate synchronously.

[0023] During the use of the centrifugal pump, the flow can quickly pass through the stator 3, but the trace long strip soft materials in the liquid will be intercepted by the micropores 4 on the surface of the stator 3. When the inner rotor 1 is driven by the motor to rotate inside the stator 3, the grinding teeth 13 on the outer side surfaces of the pin rods 12 on the inner rotor 1 can shear with the grinding tooth grooves 31 on the inner side wall of the stator 3. Thus, when the pin rods 12 quickly pass through the micropores 4 on the surface of the stator 3, the long strip soft materials will be pulled and torn, which can not only ensure the grindability of the materials, but also effectively avoid the problem of blockage of the micropores 4 on the surface of the stator 3. In addition, since each pin rod 12 is in a rod shape, it will not cause too much obstruction to the flow, thus effectively ensuring the large flow conveying effect of the centrifugal pump.

[0024] Embodiment 2, as a further preferred solution of Embodiment 1, a plurality of installation holes 14 are evenly opened at the position of the turntable 11 close to the outer circumference. The pin rods 12 are fixedly welded in the corresponding installation holes 14. Therefore, during installation, each pin rod 12 can be directly fixedly welded into each installation hole 14 on the surface of the turntable 11.

[0025] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A pin-type rotor structure, characterized in that: The invention comprises an inner rotor (1), an outer rotor (2) and a stator (3), wherein the inner rotor (1) is arranged in an inner cavity of the stator (3), the outer rotor (2) is arranged outside the stator (3), and the outer rotor (2) and the inner rotor (1) are coaxially fixed by bolts, and a plurality of micro holes (4) are evenly opened on the side wall of the stator (3); The inner rotor (1) comprises a rotating disk (11) and a plurality of rod pins (12); a mounting shaft hole is arranged at the center of the rotating disk (11); each rod pin (12) is evenly and vertically installed at the outer edge of the surface of the rotating disk (11); each rod pin (12) is provided with a grinding tooth (13) on the outer side surface; a plurality of rows of grinding tooth grooves (31) are evenly arranged on the inner side wall of the stator (3); and the grinding teeth (13) are meshed with each grinding tooth groove (31).

2. A pin-type rotor structure according to claim 1, characterized in that: The rotating disk (11) is evenly provided with a plurality of mounting holes (14) at positions close to the outer circumference, and the ends of the rod pins (12) are fixedly welded in the corresponding mounting holes (14).

3. The pin-type rotor structure according to claim 1, characterized in that: The inner rotor (1) and the outer rotor (2) are both coaxially arranged with the stator (3).

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