CN217950729U

CN217950729U - Effectual high-efficient centrifugal fan disappears to make an uproar

Info

Publication number: CN217950729U
Application number: CN202221581448.3U
Authority: CN
Inventors: 王其东
Original assignee: Jiangsu Derek Environmental Protection Technology Co ltd
Current assignee: Jiangsu Derek Environmental Protection Technology Co ltd
Priority date: 2022-06-23
Filing date: 2022-06-23
Publication date: 2022-12-02
Anticipated expiration: 2032-06-23

Abstract

The utility model discloses an effectual high-efficient centrifugal fan of making an uproar disappears, including the spiral case, the back lateral wall center department of spiral case is provided with the air intake, the outside of air intake is provided with the muffler, the inside of spiral case is provided with preceding rotating cage, the rear side of preceding rotating cage is provided with back rotating cage, the preceding inner wall center department of spiral case is provided with the link, the rear end of link runs through the back wall of preceding rotating cage, and tip fixed connection is on the back wall of preceding rotating cage, the front end of link runs through the preceding inner wall of spiral case, a lateral wall of spiral case is provided with the air-out pipeline by upper end department, the upper end of air-out pipeline is provided with the mounting panel. The utility model discloses a be crisscross emission with the blade of preceding rotating cage and back rotating cage, consequently can reduce the noise that the blade produced, the blade noise reduction of staggering arranging is based on the principle that volute tongue department pressure part was offset, and from this the output effect is more high-efficient when centrifugal fan uses.

Description

Effectual high-efficient centrifugal fan disappears to make an uproar

Technical Field

The utility model relates to a centrifugal fan field especially relates to an effectual high-efficient centrifugal fan makes an uproar disappears.

Background

The centrifugal fan comprises a casing, a main shaft, an impeller, a bearing transmission mechanism and a motor. The casing is cylindrical, the impeller is coaxially and rotatably arranged in the casing, a motor is fixed on one end face of the casing, the motor is connected with the impeller through a main shaft and drives the impeller, an opening is formed in the other end face of the casing and serves as an air inlet, and an air outlet is formed in the circumferential side face of the casing.

The centrifugal fan is a driven fluid machine which accelerates, decelerates and changes the flow direction of gas and finally discharges the gas from an air outlet by utilizing an impeller rotating at a high speed according to the principle that kinetic energy is converted into potential energy.

The prior patent (with the publication number of CN 214221630U) discloses a dustproof and silent centrifugal fan, which relates to the technical field of centrifugal fans and comprises a shell, wherein bolts are fixedly connected to the side surface of the shell, an air inlet pipe is fixedly installed on the side surface of the shell through the bolts, and a pretreatment baffle is movably connected to the top end of an inner cavity of the air inlet pipe. The utility model discloses a preliminary treatment baffle carries out the preliminary treatment to the dust in the air, the dust removal filter screen that deuterogamies adsorbs the dust, fall into the dust collecting tank through its self gravity, mix the collection with the moisture in the dust collecting tank, centrifugal fan has been avoided in the use, the easy graininess pollutant that will mix in the air inhales it in, and the pollutant inhales behind the centrifugal fan, easy adhesion is in centrifugal fan, make the inside dirtying of centrifugal fan, influence centrifugal fan's normal operation, equipment work efficiency has been leaded to and has been descended, use cost increases's problem, thereby reached and promoted work efficiency, reduce cost's effect.

However, the utility model discloses still have some shortcomings in the in-service use process, this utility model only has done amortization to casing and air intake, but the air outlet still exists because the noise that is produced by accelerated air, provides a effectual high-efficient centrifugal fan of making an uproar disappears for this reason.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a noise elimination efficient centrifugal fan.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an effectual high-efficient centrifugal fan of making an uproar disappears, includes the spiral case, the back lateral wall center department of spiral case is provided with the air intake, the outside of air intake is provided with the muffler, the inside of spiral case is provided with preceding rotating cage, the rear side of preceding rotating cage is provided with back rotating cage, the preceding inner wall center department of spiral case is provided with the link, the rear end of link runs through the back wall of preceding rotating cage, and tip fixed connection is on the back wall of preceding rotating cage, the front end of link runs through the preceding inner wall of spiral case, a lateral wall of spiral case leans on upper end department to be provided with the air-out pipeline, the upper end of air-out pipeline is provided with the mounting panel, be provided with a plurality of fender stream boards on the inside wall of air-out pipeline, it is a plurality of keep off the both ends of stream board fixed connection respectively on the inside wall of air-out pipeline, the back lateral wall center department of link is provided with the flabellum, the front side of spiral case is provided with places the platform, the upper end of placing the platform is provided with driving motor, driving motor's output fixed connection is at the front end of link, the lower extreme of placing the platform is provided with the mount, the rear end of placing the rear end of mount respectively fixed connection on the front lateral wall of mount.

As a further description of the above technical solution:

the lower end of the driving motor is fixedly connected with the upper end face of the placing table through a plurality of bolts.

As a further description of the above technical solution:

and the outer side walls of the volute and the air outlet pipeline are provided with silencing interlayers.

As a further description of the above technical solution:

and the surfaces of the flow baffle plates are provided with silencing coatings.

As a further description of the above technical solution:

the blades of the front rotating cage and the blades of the rear rotating cage are distributed in a staggered mode.

As a further description of the above technical solution:

the volute and the air outlet pipeline are integrally cast.

As a further description of the above technical solution:

the fan blades are connected to the rear end face of the connecting end through welding.

As a further description of the above technical solution:

the silencer is detachably connected with the volute.

The utility model discloses following beneficial effect has:

the utility model discloses with the current contrast that sets up, be crisscross emission through the blade with preceding rotating cage and back rotating cage, be out of phase along the produced pressure of rotating cage, consequently can reduce the noise that the blade produced, the blade noise reduction of staggering arranging is based on the principle that volute tongue department pressure part was offset, and the output effect is more high-efficient when centrifugal fan used from this.

The utility model discloses with the current contrast that sets up, through all being provided with the amortization intermediate layer on the lateral wall at spiral case and air-out pipeline, be provided with the muffler simultaneously on the lateral wall of air intake, flow the board cooperation at a plurality of fender with air-out pipeline inside, the noise that centrifuge in use produced that significantly reduces.

Drawings

Fig. 1 is an axonometric view of a high-efficiency centrifugal fan with good noise elimination effect provided by the utility model;

fig. 2 is a front view of a high-efficiency centrifugal fan with good noise elimination effect provided by the utility model;

fig. 3 is a top view of the high-efficiency centrifugal fan with good noise elimination effect provided by the present invention;

fig. 4 is a cross-sectional view of the high-efficiency centrifugal fan with good noise elimination effect;

fig. 5 is a front cross-sectional view of an air outlet pipeline of a high-efficiency centrifugal fan with good noise elimination effect.

Illustration of the drawings:

1. a volute; 2. a drive motor; 3. a placing table; 4. a fixed mount; 5. a fan blade; 6. a muffler; 7. an air outlet pipeline; 8. mounting a plate; 9. a sound-deadening interlayer; 10. a front rotating cage; 11. rotating the cage; 12. a connecting end; 13. a flow baffle plate; 14. and an air inlet.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", 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 simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Referring to fig. 1-5, the present invention provides an embodiment: the utility model provides an effectual high-efficient centrifugal fan of making an uproar disappears, including spiral case 1, spiral case 1's back lateral wall center department is provided with air intake 14, the outside of air intake 14 is provided with muffler 6, be detachable connection between muffler 6 and the spiral case 1, muffler 6 is the most effective measure of restraining the ventilation blower noise, spiral case 1's inside is provided with preceding rotating cage 10, the rear side of preceding rotating cage 10 is provided with back rotating cage 11, the blade of preceding rotating cage 10 is the alternating expression with the blade of back rotating cage 11 and distributes, pass through welded connection between preceding rotating cage 10 and the back rotating cage 11, spiral case 1's preceding inner wall center department is provided with link 12, the rear end of link 12 runs through the back wall of preceding rotating cage 10, and tip fixed connection is on the back wall of preceding rotating cage 10, the front end of link 12 runs through the preceding inner wall of spiral case 1.

A side wall of the spiral case 1 is provided with an air outlet pipeline 7 near an upper end, the upper end of the air outlet pipeline 7 is provided with a mounting plate 8, the air outlet pipeline 7 is provided with a plurality of flow baffle plates 13 near the inner side wall of the upper end, two ends of the flow baffle plates 13 are respectively and fixedly connected to the inner side wall of the air outlet pipeline 7, the surfaces of the flow baffle plates 13 are respectively provided with a silencing coating, the flow baffle plates 13 are used for separating wind in an air outlet into a plurality of flows, meanwhile, the surfaces of the flow baffle plates 13 are respectively provided with the silencing coating, so as to avoid the generation of frictional noise between the wind and the flow baffle plates 13, the center of the rear side wall of the connecting end 12 is provided with a fan blade 5, the fan blade 5 is connected to the rear end face of the connecting end 12 through welding, the front side of the spiral case 1 is provided with a placing table 3, the upper end of the placing table 3 is provided with a driving motor 2, the output end of the driving motor 2 is fixedly connected to the upper end face of the placing table 3 through a plurality of bolts, the lower end of the placing table 3 is provided with the air outlet pipeline 4, the rear end of the placing table 3 and the rear end of the fixing frame 4 are respectively and fixedly connected to the front side wall of the fixing frame 1 when the spiral case, the fixing frame is ensured, the fixing frame, and the outer side wall of the spiral case is provided with an integral type fan, and the fixing frame 1, and the outer side wall of the volute 7, and the volute 1 is provided with an integral type fan, so as to reduce noise generated by adopting an integral type fan, and the inner side wall of the centrifugal fan, and the volute 7.

The working principle is as follows: the utility model relates to an effectual high-efficient centrifugal fan of noise elimination, be crisscross emission through the blade with preceding rotating cage 10 and back rotating cage 11, produced pressure is out of phase along rotating cage, consequently, can reduce the noise that the blade produced, the blade noise reduction of arranging staggeredly is based on the principle that the local pressure of volute tongue department was offset, from this the output effect is more high-efficient when centrifugal fan uses, all be provided with amortization intermediate layer 9 on the lateral wall of spiral case 1 and air-out pipeline 7 simultaneously, 6 and a plurality of fender stream board 13 cooperations of air-out pipeline 7 inside with muffler on the 14 lateral walls of air intake, make centrifugal fan noise when using littleer.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions on some technical features, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides an effectual high-efficient centrifugal fan makes an uproar disappears, includes spiral case (1), its characterized in that: an air inlet (14) is arranged at the center of the rear side wall of the volute (1), a silencer (6) is arranged at the outer side of the air inlet (14), a front rotating cage (10) is arranged inside the volute (1), the rear side of the front rotating cage (10) is provided with a rear rotating cage (11), a connecting end (12) is arranged at the center of the front inner wall of the volute (1), the rear end of the connecting end (12) penetrates through the rear wall of the front rotating cage (10), the end part of the connecting end is fixedly connected to the rear wall of the front rotating cage (10), the front end of the connecting end (12) penetrates through the front inner wall of the volute (1), an air outlet pipeline (7) is arranged at the position close to the upper end of one side wall of the volute (1), a plurality of flow blocking plates (13) are arranged on the inner side wall of the upper end of the air outlet pipeline (7), a fan blade (5) is arranged at the center of the rear side wall of the connecting end (12), a plurality of the flow blocking plates (13) are arranged on the inner side wall of the upper end of the air outlet pipeline (7), a motor driving platform (3) is arranged at the lower end of a fixed support (3), and a motor driving platform (3) is arranged at the lower end of the fixed support (3) of the motor support (3), the rear end of the placing table (3) and the rear end of the fixing frame (4) are respectively and fixedly connected to the front side wall of the volute (1).

2. The efficient centrifugal fan with good noise elimination effect according to claim 1, is characterized in that: the lower end of the driving motor (2) is fixedly connected with the upper end face of the placing table (3) through a plurality of bolts.

3. The efficient centrifugal fan with good noise elimination effect according to claim 1, is characterized in that: and the outer side walls of the volute (1) and the air outlet pipeline (7) are provided with silencing interlayers (9).

4. The efficient centrifugal fan with good noise elimination effect according to claim 1, is characterized in that: the surfaces of the flow baffle plates (13) are provided with sound attenuation coatings.

5. The high-efficiency centrifugal fan with good noise elimination effect as claimed in claim 1, wherein the blades of the front rotating cage (10) and the blades of the rear rotating cage (11) are distributed in a staggered manner.

6. The efficient centrifugal fan with good noise elimination effect as claimed in claim 1, wherein: the volute (1) and the air outlet pipeline (7) are cast integrally.

7. The efficient centrifugal fan with good noise elimination effect according to claim 1, is characterized in that: the fan blades (5) are connected to the rear end face of the connecting end (12) through welding.

8. The efficient centrifugal fan with good noise elimination effect according to claim 1, is characterized in that: the silencer (6) is detachably connected with the volute (1).