CN212511641U

CN212511641U - Ventilation and exhaust noise reduction device for laboratory

Info

Publication number: CN212511641U
Application number: CN202020529976.9U
Authority: CN
Inventors: 占茂辉
Original assignee: Shenzhen Yijinda Environmental Engineering Co ltd
Current assignee: Shenzhen Yijinda Environmental Engineering Co ltd
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2021-02-09
Anticipated expiration: 2030-04-13

Abstract

The utility model discloses a laboratory leads to and airs exhaust noise reduction device, including noise reduction case, air-supply line, play tuber pipe, the air-supply line passes through the bolt and is connected with the laboratory exhaust pipe, and the air-supply line passes through the screw and is connected with noise reduction case, and noise reduction case's other end welding has a tuber pipe, noise reduction incasement is equipped with first baffle, second baffle, the third baffle of screw installation, has seted up a plurality of big round holes on the first baffle, and little round hole has all been seted up in the four corners of first baffle, the back welding of big round hole has U type pipe, and U type pipe is located between first baffle, the second baffle, has seted up the air vent on the second baffle, and the rear of second baffle is equipped with a plurality of shielding plates, and shielding plate carries out crisscross setting from top to bottom, seted up the through-hole on the third baffle, noise reduction case's air is. The utility model has reasonable design; the design of a plurality of baffles prolongs the stay time of air in the noise reduction box, thereby improving the noise reduction effect.

Description

Ventilation and exhaust noise reduction device for laboratory

Technical Field

The utility model relates to a laboratory leads to noise reduction device of airing exhaust.

Background

The laboratory carries out the place of experiment promptly, and the laboratory is scientific cradle, is scientific research's base, and the source spring of science and technology development plays very important effect to science and technology development, often need utilize the fan to improve the circulation of laboratory air in order to guarantee laboratory staff's health, and the noise of leading to the exhaust pipe in the laboratory is great, can influence outdoor personnel's work, and the laboratory leads to exhaust noise reduction device to be had important effect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a laboratory leads to noise reduction device of airing exhaust to solve above-mentioned technical problem.

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

the utility model provides a laboratory leads to air exhaust noise reduction device, includes noise reduction case, air-supply line, goes out the tuber pipe, the air-supply line passes through the bolt and is connected with the laboratory exhaust pipe, and the air-supply line passes through the screw and is connected with noise reduction case, and noise reduction case's other end welding has out the tuber pipe, be equipped with first baffle, second baffle, the third baffle of screw installation in the noise reduction case, seted up a plurality of big round holes on the first baffle, little round hole has all been seted up in the four corners of first baffle, the back welding of big round hole has U type pipe, and U type pipe is located between first baffle, the second baffle, has seted up the air vent on the second baffle, and the rear of second baffle is equipped with a plurality of shielding plates, and the shielding plate sets up crisscross from top to bottom, seted up the through-hole on the third baffle, noise reduction case's air is discharged through the through-hole.

Preferably, the upper end face and the lower end face of the air inlet pipe are respectively bonded with sound absorption plates, two sleeves are arranged in the air inlet pipe, and the sound absorption plates at the upper end and the lower end are fixed through the sleeves.

Preferably, an internal thread is formed in the sleeve, the upper end and the lower end of the sleeve are both provided with a through design, the upper end and the lower end of the sleeve are both provided with a screw rod in threaded connection, the tail end of the screw rod is welded with a spring, one side of the sleeve is welded with a support, and the support is connected with the side wall of the noise reduction box.

Preferably, the front end and the rear end of the U-shaped pipe are both provided with silencing holes.

Compared with the prior art, the utility model has the advantages of it is following: the utility model has reasonable design; the design of the first baffle, the second baffle and the third baffle prolongs the stay time of air in the noise reduction box, and the noise in the air can be fully reduced in the noise reduction box; the sound-absorbing boards in the air inlet pipe are fixed through a sleeve, a screw rod and a spring, and the screw rod is rotated to change the height of the screw rod so as to fix the sound-absorbing boards with different thicknesses; the U-shaped pipe and the silencing hole can perform secondary silencing operation.

Drawings

Fig. 1 is the schematic view of the ventilation and exhaust noise reduction device in the laboratory.

Fig. 2 is the utility model discloses the noise reduction case cross-sectional view of laboratory ventilation and exhaust noise reduction device.

Fig. 3 is a cross-sectional view of the air inlet pipe of the ventilation and exhaust noise reduction device in the laboratory.

Fig. 4 is a schematic view of a U-shaped pipe of the ventilation and exhaust noise reduction device in the laboratory.

Detailed Description

The invention is explained in further detail below with reference to the figures and the embodiments.

As shown in fig. 1-4, a laboratory ventilation and air exhaust noise reduction device comprises a noise reduction box 1, an air inlet pipe 2 and an air outlet pipe 3, wherein the air inlet pipe 2 is connected with a laboratory exhaust pipe through a bolt, the air inlet pipe 2 is connected with the noise reduction box 1 through a bolt, the air outlet pipe 3 is welded at the other end of the noise reduction box 1, a first baffle 4, a second baffle 5 and a third baffle 6 which are installed through bolts are arranged in the noise reduction box 1, a plurality of large round holes 7 are arranged on the first baffle 4, small round holes 8 are arranged at four corners of the first baffle 4, a U-shaped pipe 9 is welded at the back of the large round hole 7, the U-shaped pipe 9 is positioned between the first baffle 4 and the second baffle 5, an air vent 11 is arranged on the second baffle 5, a plurality of baffle plates 10 are arranged behind the second baffle 5, the baffle plates 10 are arranged in a vertically staggered manner, a through hole is arranged on the third baffle 6, and air of the noise reduction box 1 is exhausted through the, be equipped with the sound cotton of inhaling of fix with screw on the lateral wall of noise reduction case 1, the upper and lower two terminal surfaces of air-supply line 2 all bond and have abatvoix 13, be equipped with two sleeves 12 in the air-supply line 2, fix the abatvoix 13 at upper and lower both ends through sleeve 12, set up the internal thread in the sleeve 12, and the upper and lower both ends of sleeve 12 are the design of opening, the upper and lower both ends of sleeve 12 all are equipped with threaded connection's lead screw 14, the terminal welding of lead screw 14 has spring 15, the welding of one side of sleeve 12 has support 16, support 16 is connected with the lateral wall of noise reduction case 1, sound damping hole 17 has all been seted up at the preceding, the back both ends of U type.

The foregoing is a preferred embodiment of the present invention, and for those skilled in the art to understand the teaching of the present invention, the changes, modifications, replacements and variations to the embodiments will still fall within the protection scope of the present invention without departing from the principle and spirit of the present invention.

Claims

1. A laboratory ventilation and exhaust noise reduction device comprises a noise reduction box (1), an air inlet pipe (2) and an air outlet pipe (3), and is characterized in that the air inlet pipe (2) is connected with a laboratory exhaust pipe through bolts, the air inlet pipe (2) is connected with the noise reduction box (1) through screws, the air outlet pipe (3) is welded at the other end of the noise reduction box (1), a first baffle (4), a second baffle (5) and a third baffle (6) which are mounted through screws are arranged in the noise reduction box (1), a plurality of large round holes (7) are formed in the first baffle (4), small round holes (8) are formed in four corners of the first baffle (4), U-shaped pipes (9) are welded at the back of the large round holes (7), the U-shaped pipes (9) are located between the first baffle (4) and the second baffle (5), vent holes (11) are formed in the second baffle (5), and a plurality of shielding plates (10) are arranged behind the second baffle (5), and the baffle plate (10) is arranged in a vertically staggered manner, the third baffle plate (6) is provided with a through hole, air of the noise reduction box (1) is discharged through the through hole, and the side wall of the noise reduction box (1) is provided with sound absorption cotton fixed by screws.

2. The ventilation and exhaust air noise reduction device for the laboratory according to claim 1, wherein sound-absorbing plates (13) are bonded to the upper and lower end surfaces of the air inlet pipe (2), two sleeves (12) are arranged in the air inlet pipe (2), and the sound-absorbing plates (13) at the upper and lower ends are fixed through the sleeves (12).

3. The ventilation and exhaust noise reduction device for the laboratory according to claim 2, wherein an internal thread is formed in the sleeve (12), the upper end and the lower end of the sleeve (12) are both open, a screw rod (14) in threaded connection is arranged at each of the upper end and the lower end of the sleeve (12), a spring (15) is welded at the tail end of the screw rod (14), a bracket (16) is welded at one side of the sleeve (12), and the bracket (16) is connected with the side wall of the noise reduction box (1).

4. The ventilation and noise reduction device for the laboratory according to claim 1, wherein the front end and the rear end of the U-shaped pipe (9) are provided with silencing holes (17).