A transmission fan air inlet filtering and silencing device

Abstract

The utility model relates to a transmission fan air inlet filtering and silencing device, belonging to the technical field of silencing equipment; it comprises a silencing elbow, a silencing mesh pipe, a dust removal filter element and a silencing air duct, one end of the silencing elbow is an air outlet, connected to the air inlet of the transmission fan, the other end of the silencing elbow is connected to the silencing mesh pipe, a dust removal filter element is arranged in the silencing mesh pipe, and a silencing air duct is arranged on the outer sleeve of the silencing mesh pipe; the air passes through the air inlet through the dust removal filter element to remove impurities and dust in the air, and then the silencing mesh pipe filters and attracts the high-speed flowing gas, thereby attenuating and dispersing the wind noise, reducing the decibel and frequency, and playing the role of silencing and filtering; after the device is installed at the air inlet of the transmission fan, the environmental noise has been reduced to below 60 decibels, and the dust in the air is effectively prevented from directly contacting the product through the air inlet, thereby ensuring the qualified rate of the product.

Description

Technical Field

[0001] The utility model relates to a filtering and silencing device for an air inlet of a transmission fan, belonging to the technical field of silencing equipment. Background Art

[0002] The noise at the air inlet of the existing transmission fan is very loud, reaching about 85 decibels, which seriously affects the physical and mental health of workshop employees and work communication during production. In addition, the air inhaled by the transmission fan is not purified, which affects the product quality. The products produced at the production site are difficult to meet the inspection standards due to the influence of dust in the air. Therefore, a method is needed to reduce the noise at the air inlet of the transmission fan and effectively prevent dust in the gap from directly contacting the product through the air inlet. Utility Model Content

[0003] The utility model aims at solving the problems existing in the prior art and provides a transmission fan air inlet filtering and silencing device.

[0004] The purpose of the utility model is achieved through the following technical scheme: a transmission fan inlet filtering and silencing device, including a silencing elbow, a silencing mesh pipe, a dust removal filter element and a silencing air duct, one end of the silencing elbow is an air outlet, which is connected to the air inlet of the transmission fan, and the other end of the silencing elbow is connected to the silencing mesh pipe. A dust removal filter element is arranged in the silencing mesh pipe, and a silencing air duct is arranged on the outer cover of the silencing mesh pipe.

[0005] The silencer elbow is formed into one piece by connecting a round tube and a square tube through an arc transition.

[0006] One end of the silencer elbow is connected to the transmission fan through a connecting flange, and the other end of the silencer elbow is connected to the silencer network pipe through a connecting flange.

[0007] The silencer mesh tube is a cubic structure with a hollow interior, and the side walls of the silencer mesh tube are all provided with through holes.

[0008] The silencer mesh tube comprises an outer tube and an inner tube, both of which are hollow cubic structures with openings at both ends, the inner tube is arranged in the outer tube and has an annular gap, and the side walls of the outer tube and the inner tube are both provided with through holes.

[0009] The annular gap between the outer cylinder and the inner cylinder is filled with sound absorbing material.

[0010] One end of the silencer air duct is an air inlet, and the other end of the silencer air duct is connected to one end of the silencer elbow through a connecting flange.

[0011] The utility model has the following beneficial effects: (1) The device is composed of a silencer elbow, a dust removal filter element and a silencer duct due to the connection of the transmission fan. The air passes through the dust removal filter element through the air inlet to remove impurities and dust in the air, and then the silencer network pipe filters and attracts the high-speed flowing gas, thereby attenuating and dispersing the wind noise, reducing decibels and frequency, and playing a role in silencer filtering; after installing the device at the air inlet of the transmission fan, the environmental noise has been reduced to below 60 decibels, and the dust in the air is effectively prevented from directly contacting the product through the air inlet, thereby ensuring the qualified rate of the product.

[0012] (2) The device is mainly composed of four parts, with the characteristics of simple structure and easy assembly and disassembly. The filter cotton can be replaced conveniently and quickly, and the cost of other maintenance is almost zero. The device as a whole meets the characteristics of environmental protection nodes. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the exploded structure of the utility model.

[0015] In the figure: 1. Silencer elbow; 2. Silencer mesh pipe; 3. Dust filter element; 4. Silencer air duct; 5. Connecting flange. DETAILED DESCRIPTION

[0016] The utility model will be further described below in conjunction with the accompanying drawings and the accompanying description.

[0017] Example 1

[0018] A transmission fan air inlet filtering and silencing device, comprising a silencing elbow 1, a silencing network pipe 2, a dust removal filter element 3 and a silencing air duct 4;

[0019] The silencer elbow 1 is formed as a whole by connecting a circular tube and a square tube through an arc-shaped transition. One end of the silencer elbow 1 is an air outlet, which is connected to the air inlet of the transmission fan through a connecting flange 5. The other end of the silencer elbow 1 is connected to the silencer network pipe 2 through a connecting flange 5. A dust removal filter element 3 is arranged in the silencer network pipe 2. A silencer air duct 4 is arranged on the outer sleeve of the silencer network pipe 2. The silencer network pipe 2 is a hollow cubic structure inside, and the side walls of the silencer network pipe 2 are all provided with through holes. One end of the silencer air duct 4 is an air inlet, and the other end of the silencer air duct 4 is connected to the silencer elbow 1 through a connecting flange 5.

[0020] Example 2

[0021] A transmission fan air inlet filtering and silencing device, comprising a silencing elbow 1, a silencing network pipe 2, a dust removal filter element 3 and a silencing air duct 4;

[0022] The silencer elbow 1 is formed by connecting a circular tube and a square tube through an arc transition to form an integral body. One end of the silencer elbow 1 is an air outlet, which is connected to the air inlet of the transmission fan through a connecting flange 5. The other end of the silencer elbow 1 is connected to the silencer mesh tube 2 through a connecting flange 5. A dust removal filter 3 is arranged inside the silencer mesh tube 2. A silencer air duct 4 is arranged outside the silencer mesh tube 2. The silencer mesh tube 2 includes an outer tube and an inner tube. Both the outer tube and the inner tube are hollow cubic structures with openings at both ends. The inner tube is arranged inside the outer tube and has an annular gap. The side walls of the outer tube and the inner tube are both provided with through holes. The annular gap between the outer tube and the inner tube is filled with sound-absorbing materials. Through further improvements on the silencer mesh tube 2, the device can not only use the through holes of the silencer mesh tube to achieve noise reduction, but also further reduce noise through sound-absorbing materials.

[0023] The above description is only a preferred embodiment of the present invention. Any modification, equivalent replacement, improvement, etc. made to the above embodiment based on the technical essence of the present invention shall be included in the protection scope of the present invention.

Claims

1. A transmission fan air inlet filtering and silencing device, characterized in that: The utility model comprises a silencer elbow (1), a silencer network tube (2), a dust removal filter element (3) and a silencer air duct (4); one end of the silencer elbow (1) is an air outlet connected to an air inlet of a transmission fan; the other end of the silencer elbow (1) is connected to the silencer network tube (2); a dust removal filter element (3) is arranged in the silencer network tube (2); and a silencer air duct (4) is arranged on the outer shell of the silencer network tube (2).

2. The transmission fan air inlet filtering and silencing device according to claim 1 is characterized in that: The silencer elbow (1) is formed as a whole by connecting a round tube and a square tube via an arc-shaped transition.

3. The transmission fan air inlet filtering and silencing device according to claim 1 is characterized in that: One end of the silencer elbow (1) is connected to the transmission fan via a connecting flange (5), and the other end of the silencer elbow (1) is connected to the silencer network pipe (2) via a connecting flange (5).

4. The transmission fan air inlet filtering and silencing device according to claim 1 is characterized in that: The silencer mesh tube (2) is a cubic structure with a hollow interior, and the side walls of the silencer mesh tube (2) are all provided with through holes.

5. The transmission fan air inlet filtering and silencing device according to claim 1 is characterized in that: The silencer mesh tube (2) comprises an outer tube and an inner tube, both of which are hollow cubic structures with openings at both ends, the inner tube is arranged in the outer tube and has an annular gap, and the side walls of the outer tube and the inner tube are both provided with through holes.

6. The transmission fan air inlet filtering and silencing device according to claim 5 is characterized in that: The annular gap between the outer cylinder and the inner cylinder is filled with sound absorbing material.

7. The transmission fan air inlet filtering and silencing device according to claim 1 is characterized in that: One end of the silencer air duct (4) is an air inlet, and the other end of the silencer air duct (4) is connected to one end of the silencer elbow (1) via a connecting flange (5).

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