CN219865579U

CN219865579U - Centrifugal low-noise impeller

Info

Publication number: CN219865579U
Application number: CN202320314726.7U
Authority: CN
Inventors: 陈青旭; 李罗团
Original assignee: Guangdong Yongcheng Electromechanical Technology Co ltd
Current assignee: Guangdong Yongcheng Electromechanical Technology Co ltd
Priority date: 2023-02-27
Filing date: 2023-02-27
Publication date: 2023-10-20
Anticipated expiration: 2033-02-27

Abstract

The utility model provides a centrifugal low-noise impeller, which relates to the technical field of impeller production and comprises an impeller shaft, wherein a noise reduction turbulence assembly is arranged on the peripheral side surface of the impeller shaft and comprises a third annular plate, a first annular plate and a second annular plate, connecting sleeves are welded between the first annular plate and the third annular plate as well as between the first annular plate and the second annular plate, and a plurality of spacing rail plates are welded on the peripheral side surface inside the connecting sleeve. According to the device, the noise reduction turbulence assembly is arranged, meanwhile, the style grid plate is arranged at the second annular plate of the noise reduction turbulence assembly to serve as an air inlet, a plurality of interval rail plates are welded on the inner peripheral side face of the connecting sleeve, so that the laminar flow boundary layer at the back of the impeller blade can be immediately converted into the turbulence boundary layer, the separation of the boundary layer at the back of the compressor blade is delayed, even the separation is not carried out, the airflow speed and the pressure at the back of the style grid plate can be quickly and evenly changed by the style grid plate arranged at the rear edge of the blade, and the noise reduction effect can be effectively achieved.

Description

Centrifugal low-noise impeller

Technical Field

The utility model relates to the field of impeller production, in particular to a centrifugal low-noise impeller.

Background

The impeller refers to a wheel disc provided with the movable vanes, is a component part of the impulse turbine rotor, and can also refer to the general name of the wheel disc and the movable vanes arranged on the wheel disc. Impellers can be classified according to shape and opening and closing conditions, and the impellers generally have two structures: the front half-open type impeller is composed of a rear cover plate and blades, the impeller of the structure is low in efficiency, and a sealing ring with adjustable gaps is needed to improve the efficiency; the other is a rear half-open type, and consists of a front cover plate and blades, and the efficiency is basically the same as that of the closed impeller due to the fact that the sealing ring which is the same as that of the closed impeller can be applied, and the blades have sealing effect besides conveying liquid. The semi-open impeller is suitable for transporting liquids containing suspensions of solid particles, fibers, etc. The semi-open impeller has the advantages of small manufacturing difficulty, low cost and strong adaptability, is gradually increased in application in centrifugal pumps for oil refining and chemical industry, is used for conveying clear water and liquid similar to clear water, and has a plurality of blade shapes such as single-plate shape, circular arc shape, airfoil shape and the like. The wing-shaped blade has good aerodynamic characteristics, high efficiency, good strength and high rigidity. The disadvantage is that the manufacturing process is complex, and when the gas with high dust concentration is conveyed, the blade is easy to wear, and after the blade is worn out, impurities enter the blade, so that the impeller is unbalanced and vibration is generated. The flat straight blade is simple to manufacture, but has poor flow characteristics, and the efficiency of other working conditions is quite similar except that the efficiency near the highest efficiency point is lower than that of the airfoil blade.

According to the noise-reducing vibration-reducing impeller disclosed in the utility model with the patent publication number of CN106837866A, the impeller Zhou Cejia is provided with the guide wall to achieve a certain degree of noise reduction effect, but the turbulence structure arranged at the air inlet is not provided, so that the noise reduction effect is relatively general, the use experience is affected, and the problem that the use experience is poor due to the fact that the conventional impeller lacks the turbulence noise reduction structure is solved by designing the centrifugal low-noise impeller.

Disclosure of Invention

Based on this, it is necessary to provide a centrifugal low-noise impeller for the problem that the conventional centrifugal low-noise impeller lacks a turbulence noise reduction structure, resulting in poor use experience.

The utility model provides a centrifugal low noise impeller, includes the impeller axle, impeller axle week side is including making an uproar turbulent flow subassembly that falls, make an uproar turbulent flow subassembly that falls in the whole body of impeller axle including third annular lamina, first annular lamina and second annular lamina, first annular lamina is located between third annular lamina and the second annular lamina, all weld between first annular lamina and third annular lamina, the second annular lamina has the connecting sleeve, the inside week side welding of connecting sleeve has a plurality of interval rail boards, interval rail inboard has a plurality of recesses, the embedded groove has been seted up to third annular lamina one end, the inside week side welding of embedded groove has a plurality of air inlet grid boards, installs the style grid board as the air intake in the whole body of impeller axle that falls the turbulent flow subassembly in the second annular lamina department of making an uproar turbulent flow subassembly simultaneously, further welds a plurality of interval rail boards at the inside week side of connecting sleeve, can make the laminar flow boundary layer at impeller blade back change into turbulent flow boundary layer from this, postpone the separation that the attached at the blade back of compressor blade, even not separate, the blade trailing edge dress style can make the air current behind the quick and even change the pressure uniform style grid board from this, can make the effect of making an uproar.

Further, the air inlet grating plate is of a rectangular plate body structure, and one end of the air inlet grating plate is connected with the impeller shaft.

Further, the inner sleeve is nested on the peripheral side face of the impeller shaft, the inner sleeve is of a cylinder structure, the inner sleeve is welded with the impeller shaft, and the peripheral side face of the inner sleeve comprises an impeller assembly.

Further, the impeller assembly is of an annular plate structure, a plurality of main spiral plates are welded on the inner peripheral side face of the impeller assembly, and one end of each main spiral plate is connected with the peripheral side face of the impeller shaft.

Further, the impeller assembly comprises an upper annular plate and a lower annular plate, the upper annular plate is located above the lower annular plate, and an enclosing cylinder is welded between the upper annular plate and the lower annular plate.

Further, the surrounding cylinder periphery side comprises a storage groove, a plurality of impeller blades are welded on the storage groove periphery side, and a special-shaped groove is formed in one surface of each impeller blade.

Further, the peripheral side face of the impeller shaft is nested with an externally embedded boss, a through groove is formed in the externally embedded boss, the impeller shaft penetrates through the through groove, the upper surface of the externally embedded boss comprises a positioning ring plate, the positioning ring plate is of an annular plate body structure, and the positioning ring plate is welded with the externally embedded boss.

Further, a plurality of positioning tooth grooves are formed in the upper surface of the positioning ring plate, the positioning tooth grooves are of rectangular groove structures, and the impeller assembly is located between the externally embedded boss and the noise reduction turbulence assembly.

According to the device, the noise reduction turbulent flow assembly is additionally arranged on the whole body of the impeller shaft, meanwhile, the style grid plate is arranged at the second annular plate of the noise reduction turbulent flow assembly to serve as an air inlet, and a plurality of interval rail plates are welded on the inner peripheral side face of the connecting sleeve, so that the laminar flow boundary layer on the back face of the impeller blade can be immediately converted into the turbulent flow boundary layer, the separation of the boundary layer on the back face of the compressor blade is delayed, even the separation is not carried out, the style grid plate is arranged on the rear edge of the blade, so that the air flow speed and the pressure behind the style grid plate can be quickly and evenly changed, and the noise reduction effect can be effectively achieved.

Drawings

FIG. 1 is a schematic perspective view of a centrifugal low noise impeller in one embodiment;

FIG. 2 is a schematic bottom perspective view of a centrifugal low noise impeller in one embodiment;

FIG. 3 is a front view of a centrifugal low noise impeller in one embodiment;

FIG. 4 is a schematic view of a partial structure of an externally-embedded boss of a centrifugal low-noise impeller according to an embodiment;

fig. 5 is a bottom view of a centrifugal low noise impeller in one embodiment.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below. In the description of the present utility model, it should 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", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1 to 5 together, the present utility model provides a centrifugal low noise impeller, including an impeller shaft 12, the peripheral side of the impeller shaft includes a noise reduction turbulence assembly, the noise reduction turbulence assembly includes a third annular plate 15, a first annular plate 9 and a second annular plate 10, the first annular plate 9 is located between the third annular plate 15 and the second annular plate 10, a connecting sleeve 14 is welded between the first annular plate 9 and the third annular plate 15, and between the second annular plate 10, a plurality of spaced rail plates are welded on the inner peripheral side of the connecting sleeve 14, a plurality of grooves 16 are included in the inner peripheral side of the spaced rail plates, an embedded groove 13 is formed on one end of the third annular plate 10, a plurality of air inlet grid plates 11 are welded on the inner peripheral side of the embedded groove 13, the noise reduction turbulence assembly is additionally installed on the whole impeller shaft 12, and a style 11 is installed at the second annular plate 10 of the noise reduction turbulence assembly as an air inlet, and a plurality of spaced rail plates are welded on the inner peripheral side of the connecting sleeve 14, so that the laminar flow boundary layer on the back of the impeller blade 3 is immediately converted into a turbulent boundary layer, the blade boundary layer is delayed, and even the blade boundary layer is not separated, and the pressure of the grid plates 11 is even separated, so that the pressure and the style of the noise reduction effect can be changed rapidly.

The air inlet grating plate 11 is of a rectangular plate body structure, and one end of the air inlet grating plate 11 is connected with the impeller shaft 12.

The inner sleeve 6 is nested on the peripheral side surface of the impeller shaft 12, the inner sleeve 6 is of a cylinder structure, the inner sleeve 6 is welded with the impeller shaft 12, and the impeller assembly 1 is arranged on the peripheral side surface of the inner sleeve 6.

The impeller assembly 1 is of an annular plate structure, a plurality of main spiral plates 2 are welded on the inner peripheral side surface of the impeller assembly 1, and one end of each main spiral plate 2 is connected with the peripheral side surface of the impeller shaft 12.

The impeller assembly 1 comprises an upper annular plate 7 and a lower annular plate 4, wherein the upper annular plate 7 is positioned above the lower annular plate 4, and an enclosing cylinder is welded between the upper annular plate 7 and the lower annular plate 4.

The surrounding cylinder periphery side comprises a storage groove 5, a plurality of impeller blades 3 are welded on the storage groove 5 periphery side, and a special-shaped groove 17 is formed in one surface of each impeller blade 3.

The peripheral side face of the impeller shaft 12 is nested with an externally embedded boss 18, a through groove 20 is formed in the externally embedded boss 18, the impeller shaft 12 penetrates through the through groove 20, the upper surface of the externally embedded boss 18 comprises a positioning ring plate 19, the positioning ring plate 19 is of an annular plate body structure, and the positioning ring plate 19 is welded with the externally embedded boss 18.

The upper surface of the positioning ring plate 19 is provided with a plurality of positioning tooth grooves 21, the positioning tooth grooves 21 are of rectangular groove body structures, and the impeller assembly 1 is positioned between the externally embedded boss 18 and the noise reduction turbulence assembly.

The device installs the noise reduction turbulent flow component on the whole body of the impeller shaft 12, and installs the style grid plate 11 at the second annular plate 10 of the noise reduction turbulent flow component as an air inlet, and further welds a plurality of interval rail plates at the inner peripheral side surface of the connecting sleeve 14, thereby enabling the laminar flow boundary layer at the back of the impeller blade 3 to be immediately converted into a turbulent flow boundary layer, deferring the separation of the boundary layer at the back of the compressor blade, even not separating, and installing the style grid plate 11 at the back edge of the blade can enable the airflow speed and the pressure at the back of the style grid plate 11 to be quickly and evenly changed, thereby effectively playing the noise reduction effect.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The utility model provides a centrifugal low noise impeller, its characterized in that, includes the impeller axle, impeller axle week side is including making an uproar turbulent flow subassembly that falls, make an uproar turbulent flow subassembly that falls includes third annular plate, first annular plate and second annular plate, first annular plate is located between third annular plate and the second annular plate, all weld between first annular plate and third annular plate, the second annular plate has the connecting sleeve, the inside week side welding of connecting sleeve has a plurality of interval rail boards, interval rail inboard is including a plurality of recesses, the indent has been seted up to third annular plate one end, the inside week side welding of indent has a plurality of air inlet grid boards.

2. The centrifugal low-noise impeller according to claim 1, wherein the air intake grating plate has a rectangular plate structure, and one end of the air intake grating plate is connected with the impeller shaft.

3. The centrifugal low noise impeller according to claim 1, wherein the impeller shaft peripheral side is nested with an inner sleeve, the inner sleeve being of cylindrical configuration, the inner sleeve being welded to the impeller shaft, the inner sleeve peripheral side comprising an impeller assembly.

4. A centrifugal low noise impeller according to claim 3, wherein the impeller assembly is of annular plate structure, a plurality of main spiral plates are welded on the inner peripheral side surface of the impeller assembly, and one end of each main spiral plate is connected with the peripheral side surface of the impeller shaft.

5. The centrifugal low noise impeller of claim 4, wherein the impeller assembly comprises an upper ring plate and a lower ring plate, the upper ring plate being positioned above the lower ring plate, and an enclosure being welded between the upper and lower ring plates.

6. The centrifugal low-noise impeller according to claim 5, wherein the surrounding cylinder peripheral side surface comprises a storage groove, a plurality of impeller blades are welded on the storage groove peripheral side surface, and a special-shaped groove is formed in one surface of each impeller blade.

7. The centrifugal low-noise impeller according to claim 6, wherein the impeller shaft is nested with an externally-embedded boss on the peripheral side surface thereof, a through groove is formed in the externally-embedded boss, and the impeller shaft passes through the through groove.

8. The centrifugal low-noise impeller according to claim 7, wherein the upper surface of the externally-embedded boss comprises a positioning ring plate, the positioning ring plate is of an annular plate body structure, and the positioning ring plate is welded with the externally-embedded boss.

9. The centrifugal low-noise impeller of claim 8, wherein the upper surface of the positioning ring plate is provided with a plurality of positioning tooth grooves, and the positioning tooth grooves are of a rectangular groove body structure.

10. The centrifugal low noise impeller of claim 9, wherein the impeller assembly is located between the externally embedded boss and the noise reducing turbulence assembly.