CN218816966U

CN218816966U - Spiral impeller

Info

Publication number: CN218816966U
Application number: CN202222923109.5U
Authority: CN
Inventors: 毛法良; 毛文雨; 何沛
Original assignee: Yixing Unite Machinery Co ltd
Current assignee: Yixing Unite Machinery Co ltd
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-04-07
Anticipated expiration: 2032-11-03

Abstract

The utility model relates to an impeller technical field especially relates to a screw-tupe impeller. The technical scheme comprises the following steps: the impeller main part is including the installation axle, install the epaxial impeller that is equipped with four spiral settings, four impellers are the equidistance and set up on the installation axle, and are adjacent formed the extrusion region between the impeller, the guide way has been seted up in the extrusion region, set up the through-hole in the impeller, it is a plurality of circular form has been formed between the cross street face axle center of through-hole, and the cross street radian of every guide way is circular fourth, the through-hole is for being located the top of impeller to the diameter is the third at impeller top. The utility model discloses can fine reduction at the noise that the impeller produced in high-speed rotation, increase fan operational reliability moreover.

Description

Spiral impeller

Technical Field

The utility model relates to an impeller technical field especially relates to a screw-tupe impeller.

Background

The Roots blower is used as a typical gas pressurizing and conveying machine and widely applied to industries such as building materials, electric power, smelting, mines, aquaculture, sewage treatment, chemical engineering and the like. The working principle is that two mutually meshed impellers (two or three impellers) in a casing rotate at a constant speed in opposite directions under the action of a pair of synchronous gears, so that gas in a closed volume enclosed by the casing, a wall plate and the impellers is pushed and discharged to an outlet from a gas inlet continuously, and the purpose of blowing is achieved.

The impeller of the common Roots blower mainly adopts straight blades, and the noise is extremely strong due to extremely high flow velocity and extremely high energy when the impeller is used. The noise is harmful to human body and is not favorable for protecting environment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a helical type impeller to the problem that exists among the background art.

The technical scheme of the utility model: the utility model provides a screw-tupe impeller, includes impeller main part, impeller main part is including the installation axle, install the impeller that epaxial four spirals set up, four impellers are the equidistance and set up on the installation axle, and are adjacent formed the extrusion region between the impeller, the guide way has been seted up in the extrusion region.

Preferably, set up the through-hole in the impeller, it is a plurality of circular form has been formed between the cross street face axle center of through-hole, and the cross street radian of every guide way is the circular shape fourth, can make the angle of having leveled for need too high rotational speed just can play the effect that drives the air current, thereby the noise has been reduced.

Preferably, the through hole is located at the top of the impeller and has a diameter of one third of the top of the impeller, so that the potential vibration is reduced, and compared with the conventional hollow impeller and the conventional perforated impeller, the through hole has the characteristic of maintaining dynamic balance and has the effect of relieving air compression.

Preferably, the guide groove is located at a symmetry line of the extrusion region, the bottom of the guide groove has a certain radian, and through the arrangement of the guide groove, when the impeller body rotates, air can be extruded between adjacent impellers, the extruded air can generate noise, the extruded air flow can enter the guide groove due to the existence of pressure, the air flow can be guided through the guide groove, and the air flow can smoothly enter the guide groove due to pressure difference.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a setting of four helical impeller, carry out reasonable extrusion to the air when the operation, the air current has been formed, because the setting of guide way, can make flat angle, make need too high rotational speed just can play the effect of drive air current, thereby the noise has been reduced, and be the third at the through-hole diameter at impeller top, reduce the vibration of diving like this when using, compare with traditional hollow impeller and traditional straight impeller, the characteristic that keeps dynamic balance has, can play the extruded effect of the air of releiving again, last setting through the guide way, when the impeller main part rotates, the air can be extruded between adjacent impeller, can produce the noise by extruded air, can carry out a direction to the air current through the guide way, and because the pressure difference can make the smooth guide way that enters into of air current, thereby this scheme can reduce the noise that produces at the impeller rotates at high speed very well, and increase fan operational reliability.

Drawings

Fig. 1 is a schematic front view of a spiral impeller according to the present invention;

fig. 2 is a schematic sectional structure view of a screw impeller according to the present invention.

Reference numerals are as follows: 1. an impeller body; 2. installing a shaft; 3. an impeller; 4. a through hole; 5. a pressing area; 6. a guide groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-2, a screw-type impeller, including an impeller main body 1, the impeller main body 1 includes a mounting shaft 2, four spirally arranged impellers 3 are arranged on the mounting shaft 2, the impellers 3 are made of nodular cast iron, the four impellers 3 are equidistantly arranged on the mounting shaft 2, an extrusion area 5 is formed between the adjacent impellers 3, a guide groove 6 is formed in the extrusion area 5, the guide groove 6 is located at a symmetrical line of the extrusion area 5, and the bottom of the guide groove has a certain radian, when the impeller main body 1 rotates, air is extruded between the adjacent impellers 3, the extruded air generates noise, the extruded air enters the guide groove 6 due to the existence of pressure, the air can be guided through the guide groove 6, and the air smoothly enters the guide groove 6 due to pressure difference, a through hole 4 is formed in the impeller 3, a circular shape is formed between the cross-section axial centers of the through holes 4, the cross-section of each guide groove 6 is a quarter of a circular shape, an angle is flat, so that the rotation speed of the impeller needs to be increased, the air drives the air flow, thereby reducing the top of the traditional impeller, and reducing the top of the traditional impeller 3, and reducing the top of the noise of the traditional impeller, and reducing the top of the hollow vibration of the impeller, and reducing the top of the impeller.

The working principle of the spiral impeller is as follows: the driving motor drives the impeller body 1 to rotate, air enters from the air inlet, the air can be extruded in the extrusion area 5, air pressure is formed between adjacent blades along with high-speed rotation of the impeller body 1, the air flow can enter the through hole 4, low pressure can be relatively generated due to small air flow of the through hole 4, the air flow velocity in the through hole is low, an air pressure difference from the inside of the through hole to the opening of the air inlet in the Roots blower can be generated, the through hole 4 is positioned at the upper part of the impeller 3 and has a radian, so that extrusion can not be performed like a traditional straight blade, the potential vibration can be reduced in the using process, compared with a traditional hollow impeller, the through hole 4 is positioned at the upper part of the impeller 3 and has the largest amplitude, so that the dynamic balance characteristic can be maintained, the air extrusion effect can be relieved, when the impeller body 1 rotates, the air can be extruded between the adjacent impellers 3, the extruded air can generate noise, the air flow can be guided through the guide groove 6, the air flow can smoothly enters the guide groove 6 due to reduce the noise generated in the high-speed operation of the impeller, and the reliability of the fan can be improved.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a screw-type impeller, includes impeller main part (1), impeller main part (1) is including installation axle (2), its characterized in that: be equipped with four spiral arrangement's impeller (3) on installation axle (2), four impeller (3) are the equidistance and set up on installation axle (2), and are adjacent formed extrusion region (5) between impeller (3), set up guide way (6) in the extrusion region (5).

2. The screw-type impeller according to claim 1, wherein the impeller (3) is formed with through holes (4), the cross-sectional axes of the through holes (4) form a circular shape, and the cross-sectional curvature of each guide groove (6) is one quarter of the circular shape.

3. A screw-type impeller according to claim 2, wherein the through hole (4) is located at the top of the impeller (3) and has a diameter of one third of the top of the impeller (3).

4. A screw-type impeller according to claim 1, characterized in that the guide groove (6) is located at the line of symmetry of the pressing zone (5) and has a curvature at its bottom.