CN216554639U

CN216554639U - Silencer at outlet of ventilator

Info

Publication number: CN216554639U
Application number: CN202122585732.XU
Authority: CN
Inventors: 刘汝威; 赵龙武; 王新
Original assignee: Weihai Creditfan Ventilator Co Ltd
Current assignee: Weihai Creditfan Ventilator Co Ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-05-17
Anticipated expiration: 2031-10-26

Abstract

The utility model relates to the technical field of fan parts, in particular to a silencer for an outlet of a ventilator, which comprises a silencing barrel, wherein a silencing inner core is arranged in the silencing barrel, the silencing inner core comprises a plurality of layers of detachable silencing pieces, the silencing pieces divide the silencing barrel into a plurality of flat air outlet channels, each layer of silencing piece comprises an inner core frame and a silencing plate, the silencing plate comprises a porous plate and silencing rock wool wrapped by glass fiber cloth, connecting nuts are welded on two sides of the inner core frame, which are connected with the silencing barrel, the silencing barrel is correspondingly provided with a plurality of long holes, and the silencing pieces are connected with the silencing barrel through bolts. The noise reduction part is a plurality of detachable noise reduction sheets which are mutually independent and fixed and are combined together to reduce noise, so that the noise reduction effect is better; and the maintenance is convenient.

Description

Silencer at outlet of ventilator

Technical Field

The utility model relates to the technical field of fan parts, belongs to the field of fluid machinery, and particularly relates to a silencer at an outlet of a ventilator.

Background

At present, the use field of the ventilator is more and more extensive, and the outlet silencer is arranged at the outlet of the ventilator with higher requirement on noise. Along with the improvement of ventilation blower, its export muffler also should improve, requires that it reduces to ventilation blower performance influence, and noise reduction effect is obvious, light in weight, and intensity is high, is convenient for maintain.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide the silencer at the outlet of the ventilator, which has small influence on the performance of the ventilator, good noise reduction effect and convenient maintenance.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a ventilation blower export muffler, includes the amortization barrel, set up the amortization inner core in the amortization barrel, the amortization inner core includes that the amortization piece can be dismantled on a plurality of layers, the flat air-out passageway of a plurality of is cut apart into with the amortization barrel to the amortization piece, every layer of amortization piece includes inner core frame and amortization board, the amortization rock wool that the amortization board includes the perforated plate and is wrapped up by glass silk cloth, the both sides welding that inner core frame and amortization barrel are connected has coupling nut, the amortization barrel corresponds and is provided with a plurality of slot hole, the amortization piece passes through bolted connection with the amortization barrel.

Furthermore, the inner core frame comprises an inverted V-shaped plate, and the frame where the inverted V-shaped plate is located is arranged towards the outlet of the ventilator.

Further, the fit clearance between the silencing sheet and the silencing barrel is 2-3 mm, and the silencing barrel and each inner core frame are provided with lifting lugs.

Furthermore, the thickness of the silencing plate is 100 +/-5 mm, and silencing plates are arranged on two inner side faces, opposite to the silencing sheet, of the silencing cylinder body.

Further, the amortization barrel is provided with mounting flange, mounting flange is formed for 90 degrees of steel sheet bending, the last strengthening rib that is provided with of mounting flange.

Furthermore, the silencing cylinder body is formed by welding two metal sheets bent by 90 degrees in an enclosing manner, and a support plate shaped like a Chinese character tian is arranged on the inner side face, provided with the silencing plate, of the silencing cylinder body.

Has the advantages that: the noise reduction part is a plurality of detachable noise reduction sheets which are mutually independent and fixed and are combined together to reduce noise, so that the noise reduction effect is better; the silencing sheet is connected with the silencing barrel through the bolt matched with the long hole, and a matched gap is reserved, so that the tolerance to errors is high, and the installation influence caused by machining errors and transportation deformation is reduced; the installation and the dismantlement are convenient, and when some amortization parts were dismantled owing to take place to damage, can not seriously influence the holistic noise reduction effect of muffler, the maintenance of being convenient for.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the assembled structure of the present invention;

FIG. 3 is a first schematic structural view of a silencing cylinder;

FIG. 4 is a second schematic structural view of the silencing cylinder;

FIG. 5 is a schematic structural view of the inner core frame body;

FIG. 6 is a schematic structural diagram of a noise-damping sheet;

in the figure, a silencing cylinder body 1, a long hole 11, an angle supplementing plate 12, a supporting plate 13, a mounting flange 14, a silencing plate 15, a silencing sheet 2, an inverted V-shaped plate 21, a U-shaped plate 22, a lifting lug 23 and a connecting nut 24.

Detailed Description

The utility model is further illustrated by the following examples and figures.

Figures 1 to 6 show a silencer for the outlet of a ventilator, comprising a silencing cylinder 1 made of carbon steel, square in appearance, connected to the outlet flange of the ventilator, a silencing inner core is arranged in the silencing barrel body 1 and comprises a plurality of layers of detachable silencing sheets 2, the silencing cylinder body 1 is divided into a plurality of flat air outlet channels by the silencing sheets 2, each layer of silencing sheet 2 comprises an inner core frame and a silencing plate 15, each silencing plate 15 comprises a porous plate and silencing rock wool wrapped by glass fiber cloth, holes of the porous plate are drilled and riveted and fixed by a self-plugging rivet, connecting nuts 24 are welded on two sides of the inner core frame connected with the silencing cylinder body 1, 8 connecting nuts 24 are welded on each silencing sheet 2, the silencing barrel 1 is correspondingly provided with a plurality of long holes 11, and the silencing sheet 2 is connected with the silencing barrel 1 through bolts.

As shown in fig. 5 and 6, the inner core frame comprises an inverted V-shaped plate 21 (groove) and four U-shaped plates 22 (grooves), the inverted V-shaped plate 21 and three U-shaped plates 22 form a quadrilateral frame, the other U-shaped plate 22 is a shelf, and the frame where the inverted V-shaped plate 21 is located is arranged towards the outlet of the ventilator, so that the resistance to wind is reduced, and the influence of noise reduction on the performance of the ventilator is reduced. The use of the plate groove can reduce the weight of the core frame.

The fit clearance between the silencing piece 2 and the silencing barrel 1 can be 2-3 mm, wherein about 2.5mm is suitable, and the adjustment of clearance can be carried out through modes such as installing flat washers during assembly in consideration of the tolerance of each part and the error of the processing process due to deformation and the like. Clearance fit also can prevent the destruction of the paint that leads to because the part collision in the installation simultaneously, can effectively protect the outward appearance of muffler and promote the life of muffler. The silencing barrel body 1 and each inner core frame are provided with lifting lugs 23, so that the silencing barrel body and each inner core frame are convenient to disassemble and assemble.

The thickness of the silencing plate 15 is 100 +/-5 mm, and the silencing plates 15 are arranged on two inner side surfaces of the silencing cylinder body 1 opposite to the silencing sheet 2.

The noise reduction barrel 1 is provided with an installation flange 14, the installation flange 14 is formed by bending a steel plate by 90 degrees, and a plurality of reinforcing ribs are arranged on the installation flange 14.

Amortization barrel 1 is that two 90 sheet metals of bending enclose to close the welding and form, and the department of bending welds benefit scute 12, strengthens amortization barrel 1 bulk strength when reducing weight, 1 medial surface of amortization barrel and inner core frame are provided with "field" font backup pad 13, can increase strength, reduce the deformation of producing in-process such as sanding, spray paint, commodity circulation transportation.

The noise reduction part is provided with a plurality of detachable noise reduction sheets 2 which are mutually independent and fixed and are combined together to reduce noise, so that the noise reduction effect is better; the silencing sheet 2 is connected with the silencing barrel 1 through the bolt matched with the long hole 11, and a matched gap is reserved, so that the tolerance to errors is high, and the installation influence caused by machining errors and transportation deformation is reduced; the installation and the dismantlement are convenient, and when some amortization parts were dismantled owing to take place to damage, can not seriously influence the holistic noise reduction effect of muffler, the maintenance of being convenient for.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a ventilation blower export muffler, includes the amortization barrel, set up the amortization inner core in the amortization barrel, its characterized in that, the amortization inner core includes that the amortization piece can be dismantled on a plurality of layers, the flat air-out passageway of a plurality of is cut apart into with the amortization barrel to the amortization piece, every layer of amortization piece includes inner core frame and amortization board, the amortization board includes the perforated plate and the amortization rock wool that is wrapped up by glass silk cloth, the both sides welding that inner core frame is connected with the amortization barrel has coupling nut, the amortization barrel corresponds and is provided with a plurality of slot hole, the amortization piece passes through bolted connection with the amortization barrel.

2. The ventilator outlet silencer of claim 1 wherein said core frame includes an inverted V-shaped plate with a rim disposed toward the ventilator outlet.

3. The ventilator outlet silencer according to claim 1, wherein a fitting clearance between the silencing sheet and the silencing cylinder is 2 to 3mm, and the silencing cylinder and each core frame are provided with lifting lugs.

4. The outlet silencer for a ventilator according to claim 1, wherein the silencer plate has a thickness of 100 ± 5mm, and silencing plates are provided on both inner sides of the silencing cylinder body opposite to the silencing plate.

5. The silencer of claim 1, wherein the silencer cylinder is provided with a mounting flange formed by bending a steel plate by 90 degrees, and the mounting flange is provided with reinforcing ribs.

6. The silencer for the ventilator outlet according to claim 4, wherein the silencing cylinder is formed by welding two thin metal plates bent by 90 degrees in an enclosing manner, and a support plate shaped like a Chinese character 'tian' is arranged on the inner side surface of the silencing cylinder, which is provided with the silencing plate.