Large circular silencer

Abstract

The utility model relates to the field of silencers, in particular to a large circular silencer. The utility model aims to design a large-sized circular silencer, wherein one end of the large-sized circular silencer can be connected with a fan or a fan soft connector. A round-to-square diffusion cylinder is omitted, and the defects that the diffusion cylinder is large in size, long in production period, serious in error and the like are overcome. And the production cost of the diffusion cylinder is also saved. And one end can be directly connected with other circular ventilation equipment such as an air valve, so that other ventilation connecting pipelines such as an air pipe and a reducer pipe can be omitted.

Description

Technical Field

[0001] The utility model relates to the field of mufflers, and particularly to a large circular muffler. Background Art

[0002] A muffler is a device installed in a ventilation and air conditioning system that allows air flow through while effectively suppressing the propagation of noise along the air flow passage. Mufflers are classified into resistive mufflers, reactive mufflers, and impedance composite mufflers according to the type of noise reduction.

[0003] In recent years, domestic subway tunnels and other projects have developed rapidly and in large quantities, and the ventilation system is an essential part of them. Due to the relatively high noise of equipment such as fans, in order to reduce the impact of noise on the city and residents, mufflers have always been an essential equipment in the ventilation system.

[0004] In the domestic ventilation system, the mufflers connected to the fans are generally large sheet-type or array-type mufflers, which use sound-absorbing materials such as sound-absorbing cotton to suppress noise. And for the convenience of manufacturing and structural stability, they are all manufactured into large rectangular mufflers. The fan and the muffler are connected by a diffuser (round to square). If other ventilation equipment such as a damper is connected after the muffler, it is connected to the damper through an air duct. For large rectangular mufflers, due to the limitations of installation space and installation requirements, there are the following deficiencies:

[0005] Traditional large rectangular mufflers are connected to the fans using a diffuser (round to square). Since the fan is generally circular and the muffler is rectangular, a round-to-square diffuser must be used for connection. Due to the relatively small size of some fan rooms and to meet the environmental impact assessment requirements, the rectangular muffler is relatively large. This will lead to an abnormal increase in the size of the diffuser connecting the fan and the muffler, and it is extremely inconvenient for manufacturing and installation. Also, due to the uncertainty and error of the civil engineering size, the size of the diffuser is greatly restricted and affected, and the size of the diffuser is often too short or too long, or the civil engineering size comes out late, resulting in an extended production cycle and a longer installation cycle. Moreover, the structures of other ventilation equipment such as dampers are now also moving towards circular shapes, and large rectangular mufflers cannot be directly connected to such equipment and additional connecting equipment needs to be added for connection.

[0006] Therefore, the utility model will be improved in view of the above deficiencies. Summary of the Invention

[0007] The utility model hopes to provide a large circular muffler, and the specific scheme is as follows:

[0008] A large circular muffler includes a cylinder assembly, feet, a galvanized perforated plate, and sound-absorbing cotton. The sound-absorbing cotton is filled inside the cylinder assembly, and a galvanized perforated plate is provided inside the cylinder assembly; the cylinder assembly includes a flexible connection end flange, and the flexible connection end flange includes a flexible connection end flange branch port.

[0009] It also includes reinforcing ribs and round tubes.

[0010] The cylinder assembly, the feet, the reinforcing ribs and the round tubes are welded and formed.

[0011] The galvanized perforated plate is lined with plain weave non-alkali fiberglass cloth. The plain weave non-alkali fiberglass cloth has the characteristics of high temperature resistance, good weather resistance, high strength, low shrinkage, no deformation, incombustibility, resistance to strong acids, strong alkalis and corrosion.

[0012] The cylinder assembly also includes an outer cylinder, a perforated flange, an intermediate reinforcing flange, a flange ring, an intermediate flange ring, an inner cylinder reinforcing steel plate and a foot reinforcing steel plate, and the foot reinforcing steel plate is arranged in cooperation with the feet.

[0013] The perforated flange is welded to the mother.

[0014] The purpose of the present utility model is to design a large circular muffler, one end of which can be connected to a fan or a flexible connection of the fan (i.e., the flexible connection end flange part). The round-to-square diffuser cylinder is cancelled, and the defects such as large size of the diffuser cylinder, long production cycle and serious error are solved. The production cost of the diffuser cylinder is also saved. One end can be directly connected to other circular ventilation equipment such as a damper, and other ventilation connection pipes such as air ducts and reducer pipes can be omitted.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1. It can realize the direct connection between the large circular muffler and circular ventilation equipment such as fans and dampers.

[0017] 2. The diffuser cylinder (round-to-square) used for connection between the traditional muffler and the fan is cancelled, and the ventilation pipes for connecting with equipment such as dampers are cancelled, saving the civil engineering space and equipment cost.

[0018] 3. The large circular muffler is an integral muffler, reducing the time and labor for on-site assembly of the loose part module muffler. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of a large circular muffler of the present utility model;

[0020] Figure 2 It is a partial structural schematic diagram of a large circular muffler of the present utility model;

[0021] Wherein the reference numerals: 1. cylinder assembly; 2. feet; 3. reinforcing ribs; 4. round tubes; 5. galvanized perforated plate; 6. sound-absorbing cotton; 7. foot reinforcing steel plate; 11. outer cylinder; 12. flexible connection end flange; 13. perforated flange; 14. intermediate reinforcing flange; 15. flange ring; 16. flexible connection end flange branch; 17. intermediate flange ring; 18. inner cylinder reinforcing steel plate; 19. foot reinforcing steel plate; 110. nut. Detailed implementation manners

[0022] The following further describes the present utility model in conjunction with the accompanying drawings and specific implementation manners.

[0023] Accompanying Figure 1 As shown, it is a schematic diagram of a large circular muffler. The muffler mainly consists of a cylinder assembly 1, a foot 2, a reinforcing rib 3, a round tube 4, a galvanized perforated plate 5, and sound-absorbing cotton 6. Among them, the cylinder assembly 1, the foot 2, the reinforcing rib 3, and the round tube 4 are welded and formed according to the dimensions, and are spray-painted after welding. After welding and spray-painting are completed, the sound-absorbing cotton 6 is filled into the muffler. After filling, the galvanized perforated plate 5 is covered, and a plain-weave non-alkali fiberglass cloth is covered inside the galvanized perforated plate 5. The flange branch port (soft connection end flange branch port 16) of the muffler is the connection end of the fan soft connection. To facilitate the fan soft connection, the retaining hoop is made into a branch port structure. The galvanized perforated plate 5 is connected and fixed to the flange ring 15 and the bottom foot reinforcing steel plate 19 by using hexagon head self-tapping screws.

[0024] Accompanying Figure 2 As shown, it is a schematic diagram of the cylinder assembly. The main components include an outer cylinder 11, a soft connection end flange 12, a perforated flange 13, an intermediate reinforcing flange 14, a flange ring 15, a soft connection end flange branch port 16, an intermediate flange ring 17, an inner cylinder reinforcing steel plate 18, a bottom foot reinforcing steel plate 19, and a nut 110. The cylinder assembly 1 is welded according to the dimensions in the figure. The formed cavity serves as the space for filling the sound-absorbing cotton 6, and the supported flange ring 15 and the inner cylinder reinforcing steel plate 18 serve as the installation and connection components for covering the galvanized perforated plate 5. The perforated flange 13 is welded with an M18 or other size nut 110, which is used as a connecting piece for connecting other equipment such as a damper.

[0025] The large circular muffler is an integral muffler, which is produced by the production company internally and transported to the site. During on-site installation, the positions of the fan and the muffler are determined, and the fan soft connection end and the flange branch port (soft connection end flange branch port 16) of the muffler are connected by a retaining hoop. The other end is connected to equipment such as a damper, and the bolt connection can be carried out by using the nut 110 welded at the perforated flange end.

[0026] Based on the analysis of the requirements of equipment such as the fan, the fan soft connection, the damper, and the fan room and the civil engineering dimensions of the construction site, the present utility model modifies the structure of the large rectangular muffler and designs it into a large circular muffler. It can be directly connected to the fan or the fan soft connection on the premise of meeting the overall structural strength support, and the diffuser cylinder is cancelled. And the other end can be directly connected to ventilation equipment such as a damper, and the remaining ventilation connection pipes are cancelled. The flange of the large circular muffler is properly paired to be consistent with the flange holes of the fan or ventilation equipment such as a damper. It can be directly bolt-connected to ensure its connection strength. A sealing strip is added between the muffler flange and the fan equipment flange to ensure good sealing performance.

[0027] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A large circular muffler, characterized in that: It includes a cylinder assembly, a base, a galvanized porous plate and silencer cotton, wherein the silencer cotton is filled inside the cylinder assembly, and the galvanized porous plate is arranged inside the cylinder assembly; the cylinder assembly includes a flexible end flange, and the flexible end flange includes a flexible end flange branch.

2. A large circular muffler as claimed in claim 1, characterized in that: Also includes reinforcing ribs and round tubes.

3. A large circular muffler as claimed in claim 2, characterized in that: The cylinder assembly is formed by welding with the base, the reinforcing ribs and the round tube.

4. A large circular muffler as claimed in claim 1, characterized in that: The galvanized porous plate is covered with plain woven alkali-free glass cloth.

5. A large circular muffler as claimed in claim 1, characterized in that: The cylinder assembly also includes an outer cylinder, a flange with holes, an intermediate reinforcement flange, a flange ring, an intermediate flange ring, an inner cylinder reinforcement steel plate and a bottom foot reinforcement steel plate, and the bottom foot reinforcement steel plate and the bottom foot are arranged in coordination.

6. A large circular muffler as claimed in claim 5, characterized in that: The holed flange is welded to the mother.

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