Roots blower rotor

Abstract

The utility model belongs to the technical field of Roots blowers, and particularly relates to a Roots blower rotor which comprises a body, a center hole is formed in the body, the body comprises a plurality of rotating vanes, and a leading-out face is arranged on the cambered surface of one side of the vertex of the farthest end, away from the center hole, of each rotating vane (11) in a material removing mode. The rotating vane comprises a rotating vane arm and a rotating vane head; a rotating vane hole is formed in the rotating vane head, and the leading-out surface is arranged on the cambered surface of the rotating vane head in a material removing manner; compared with the prior art, the fan rotor has the advantages that the structural design is unique, the contact surface of the two fan rotors is reduced due to the design of the leading-out surfaces, the fan rotor has stronger adaptability to foreign matters entering the inner cavities of the rotors, the rotors are effectively prevented from suddenly stopping due to the influence of the foreign matters, and the running continuity of the fan is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of Roots blowers, in particular to a Roots blower rotor. Background Art

[0002] The existing rotor surface is a smooth surface. During the operation of the rotor, foreign matter may enter the rotor gap, which will hinder the normal operation of the rotor and affect the output power of the fan. If this state is maintained for a long time, it will also affect the service life of the rotor. Utility Model Content

[0003] The utility model aims at the above-mentioned problems and specifically designs a Roots blower rotor, so that the space when the surface is in contact is enlarged and the rotor is not easily affected by small foreign objects and stopped, thereby increasing the service life.

[0004] To achieve the above-mentioned purpose, the utility model provides a Roots blower rotor, comprising: a main body, a center hole is provided on the main body, the main body comprises 2-3 rotor blades, and a lead-out surface is provided on the arc surface on one side of the vertex farthest from the center hole on each rotor blade in a manner of removing material.

[0005] Furthermore, the lead-out surface is parallel to the axis of the center hole, the end of the lead-out surface closer to the vertex is the upper end, and the end of the lead-out surface farther from the vertex is the lower end. Along the direction from the upper end to the lower end, the distance between the lead-out surface and the original arc surface of the rotor blade gradually decreases.

[0006] Furthermore, the rotor blade includes a rotor blade arm and a rotor blade head; the rotor blade head is provided with a rotor blade hole, and the lead-out surface is arranged on the arc surface of the rotor blade head in a manner of removing material.

[0007] Furthermore, there are two guide surfaces on each of the rotating blades, and they are symmetrical relative to the vertex of the rotating blade farthest from the central hole.

[0008] Furthermore, an independent boss is formed between the two lead-out surfaces on the same rotor blade.

[0009] Furthermore, the distance between the upper end of the lead-out surface and the original arc surface of the fan rotor is 1 mm-1.5 mm.

[0010] In summary, the utility model has the following advantages and beneficial technical effects: The lead-out surface arranged on the rotor blade head makes the surface contact with the rotor when the rotor is running. area The smaller the gap, the larger the clearance. When a small foreign object enters the narrow interior, it will not affect the operation of the rotor or cause it to stop, thus extending the service life of the rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0012] Figure 1 is a front view of Example 1;

[0013] Figure 2 is a three-dimensional schematic diagram of Example 1;

[0014] Figure 3 yes Figure 1 The enlarged view of point I in the middle;

[0015] Figure 4 This is the front view of Example 2.

[0016] The reference numerals in the accompanying drawings are:

[0017] 1. body; 11. rotor blade; 111. rotor blade arm; 112. rotor blade head; 1121. rotor blade hole; 1122. boss; 12. center hole;

[0018] 2. Export the surface. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example

[0021] like Figure 1 , Figure 2 and Figure 3 As shown, a Roots blower rotor includes a body 1, which is provided with a center hole 12. The body 1 includes three rotor blades 11, and the arc surface on one side of the vertex farthest from the center hole 12 on each rotor blade 11 is provided with a lead-out surface 2 in a manner of removing material, and each of the two sides of the vertex on each rotor blade 11 has a lead-out surface 2, each lead-out surface 2 is parallel to the axis of the center hole 12, and the two lead-out surfaces 2 are symmetrical relative to the vertex farthest from the center hole 12 of the rotor blade 11.

[0022] like Figure 2 and Figure 3As shown, the end of the lead-out surface 2 closer to the vertex is the upper end, and the end of the lead-out surface 2 farther from the vertex is the lower end. Along the direction from the upper end to the lower end, the distance between the lead-out surface 2 and the original arc surface of the fan rotor gradually decreases.

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, the rotor 11 includes a rotor arm 111 and a rotor head 112; the rotor head 112 is provided with a rotor hole 1121, and the lead-out surface 2 is arranged on the arc surface of the rotor head 112, and two lead-out surfaces 2 are opened on the arc surface of the rotor head 112 by removing material. Since the two lead-out surfaces 2 are symmetrical relative to the vertex and there is a height difference between the lead-out surface 2 and the original arc surface of the rotor head 112, an independent boss 1122 is formed between the two lead-out surfaces 2.

[0024] Preferably, the distance between the upper end of the outlet surface 2 and the original arc surface of the fan rotor is 1 mm-1.5 mm. Example

[0025] The difference between the present embodiment 2 and the embodiment 1 is that the main body 1 includes two rotating blades 11, and the arc surface on the side of the vertex farthest from the center hole 12 is provided with a lead-out surface 2 in a manner of removing material, and the rest of the settings are the same.

[0026] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A Roots blower rotor, comprising a body (1), wherein the body (1) is provided with a center hole (12), and wherein: The body (1) comprises 2-3 rotating blades (11), and a lead-out surface (2) is provided on the arc surface of each rotating blade (11) on one side of the vertex farthest from the central hole (12) in a manner of removing material.

2. A Roots blower rotor according to claim 1, characterized in that: The lead-out surface (2) is parallel to the axis of the center hole (12); the end of the lead-out surface (2) closer to the vertex is the upper end, and the end of the lead-out surface (2) farther from the vertex is the lower end; along the direction from the upper end to the lower end, the distance between the lead-out surface (2) and the original arc surface of the rotor blade (11) gradually decreases.

3. A Roots blower rotor according to claim 2, characterized in that: The rotor blade (11) comprises a rotor blade arm (111) and a rotor blade head (112); a rotor blade hole (1121) is provided on the rotor blade head (112); and the outlet surface (2) is arranged on the arc surface of the rotor blade head (112) in a manner of removing material.

4. A Roots blower rotor according to claim 3, characterized in that: There are two outlet surfaces (2) on each of the rotating blades (11), and they are symmetrical relative to the vertex of the rotating blade (11) that is farthest from the central hole (12).

5. A Roots blower rotor according to claim 4, characterized in that: An independent boss (1122) is formed between the two outlet surfaces (2) on the same rotor blade (11).

6. A Roots blower rotor according to claim 2, characterized in that: The distance between the upper end of the lead-out surface (2) and the original arc surface of the fan rotor is 1 mm-1.5 mm.

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