CN2151261Y

CN2151261Y - Muffling tower

Info

Publication number: CN2151261Y
Application number: CN 93233549
Authority: CN
Inventors: 廖武林
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-03-25
Filing date: 1993-03-25
Publication date: 1993-12-29
Anticipated expiration: 2003-03-25

Abstract

The utility model discloses a muffling tower composed of a tower body, a tower bottom, a tower top, an air inlet pipe, an exhaust channel, the bottom board of a conical casing, an inner conical casing, an outer conical casing, a vertical baffle plate, pipes, a transverse baffle plate, a sound adsorber with a micro perforated plate and a limited muffling pipe. The muffling tower is provided with sound insulation layers and five muffling chambers from bottom to top. The muffling tower has seven-stage high efficiency, sound volume higher than 40 dB can be muffled, and all noise with audible frequency can be muffled. The utility model has the advantages of novel structure, high durability, low resistance, no blocking, no maintenance and safety. The muffling tower can be used for muffling the exhaust noise of diesel generator set and internal-combustion engines, the emptying noise of other industries and the noise of end gas, waste gas and exhaust of motor vehicles.

Description

Muffling tower

The utility model relates to the airflow noise-elimination device of general machine such as internal-combustion engine, motor.

Noise, especially man-made noise have become a kind of public hazards, and control and elimination noise pollution have also become one of important content of China environmental protection work.And noise abatement is nothing more than four kinds of technology, promptly insulates against sound, absorbs sound, noise elimination and shockproof, on improvement technology and effect, wherein to eliminate the noise to the most difficult.Now the silencing apparatus that uses mainly contains anti-formula, resistance formula, little formula and hybrid etc. several, and their noise reduction is all lower, generally below 30 decibels.Little formula silencing apparatus manufacturing complexity, and easily stifled and be not durable, resistance formula and hybrid silencing apparatus only are applicable to that clean air eliminates the noise, though anti-formula silencing apparatus applicable elements is not limit technical backwardness.Domestic and international anti-formula silencing apparatus has only three kinds of structures at present: expansion chamber, resonant cavity and perforated pipe, and it is poor that noise reduction falls in these noise elimination structures, and the noise reduction frequency is narrower, makes that various waste gas, exhaust sound are difficult to administer.

The purpose of this utility model is to provide a kind of de-noising effect to various waste gas, tail gas, exhaust sound very significant Muffling tower, and makes it can realize the noise reduction of whole sonic frequency, and makes easily, does not stop up with durable in use.

The solution of this Muffling tower is as follows.It has the tower body of tubular shape, be fixed at the bottom of the plate shaped tower of tower body bottom and be fixed on the tower body top and the cat head of the hemisphere hull shape that is connected with tower body inside, has the plate shaped cone shell base plate that tabula is connected mutually at the bottom of the tower in the tower body of top in tower body and with tower body, have higher outer cone housing that bottom and tower body and cone shell base plate be connected mutually and lower female cone housing in the tower body of cone shell base plate top, under the tower side have be upward through at the bottom of the tower with the cone shell base plate on perforate and with their be connected mutually and suction tude that communicate with the female cone enclosure interior, on having in the outer cone housing, the lower end becomes two-part vertical dividing plate with the outer cone enclosure interior separated by spaces with beyond the female cone housing that outer cone housing top links to each other with female cone housing top respectively, all have air outlet hole on female cone housing and the outer cone housing, has the lateral partitions that is connected mutually with tower body in the tower body of outer cone housing top, the centre of lateral partitions has that top is tubular shape and the bottom is the sound absorbent that passes the perforate on the lateral partitions and be connected with it of inverted cone housing shape, sound absorbent inside is being connected and is having the horizontal microperforated panel of micropore, top with the outer cone housing at the bottom of the awl of sound absorbent links to each other, at least have in the tower body of sound absorbent periphery a circle with the sound absorbent center be the center of circle evenly distributed pass the perforate on the lateral partitions and be connected in several tubulations on the lateral partitions, the center of cat head is fixed with the qualification hush tube that is connected with its inside, limits hush tube and has the exhaust pipe that is connected mutually with cat head and be connected with the qualification hush tube with the cat head top.

The utility model device with said structure, tower body inner space between at the bottom of its cone shell base plate and the tower forms puigging, the female cone enclosure interior space of cone shell base plate top forms the female cone anechoic room, and two-part that the inner space of the outer cone housing beyond the female cone housing is separated into by vertical dividing plate, form the right anechoic room of outer cone left side anechoic room and outer cone respectively, tower body inner space around the tubulation of lateral partitions below forms the tubulation anechoic room, and lateral partitions top tower body and cat head inner space form the sound absorption anechoic room.

Like this, the utility model is when concrete work, the exhaust that needs to eliminate noise is entered by suction tude, enter the female cone anechoic room at first, outside from the lining then, eliminate the noise from bottom to top, air outlet hole on the female cone housing enters outer cone left side anechoic room and the right anechoic room of outer cone respectively earlier, air outlet hole on the outer cone housing enters the tubulation anechoic room then, enter the sound absorption anechoic room through many tubulations again, through the noise elimination of preceding four anechoic rooms, noise attenuation has been very big, enter behind the sound absorption anechoic room again from the cat head of the hemisphere hull shape reflection sound absorbent of band microperforated panel at lateral partitions center noises elimination that effectively absorb sound of getting together, noise attentuation is to minimum.At last, exhaust is upwards discharged from exhaust pipe after hush tube is eliminated the noise again through limiting, and has become the extremely low exhaust of noisy amount.The effect of the puigging of tower body bottom is that effective deadening is played in the noisy bigger exhaust that just enters the tower body bottom.

Theoretical based on new de-noising and the utility model Muffling tower of design has seven high effect noise reductions, sound deadening capacity is greater than 40 decibels, and can realize whole sonic frequency noise reductions.Its novel and reasonable structure, lower resistance, heat resisting and pressure resisting is durable, does not stop up, and need not keep in repair, and is safe and reliable, handles tolerance and do not limit.The noise elimination that can be widely used in various waste gas, tail gas, exhausts such as diesel generating set exhaust sound, internal combustion engine exhaust noise, various industrial emptying noise, motor-vehicle tail-gas and speed to exit.

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is the embodiment of a kind of concrete structure of the utility model.

Reference character among Fig. 1 is: 1, and suction tude; 2, at the bottom of the tower; 3, the cone shell base plate; 4, the female cone housing; 5, air outlet hole; 6, tower body; 7, the outer cone housing; 8, vertical dividing plate; 9, tubulation; 10, lateral partitions; 11, sound absorbent; 12, microperforated panel; 13, cat head; 14, limit hush tube; 15, exhaust pipe; 16, puigging; 17, the female cone anechoic room; 18, outer cone left side anechoic room; 19, the right anechoic room of outer cone; 20, the tubulation anechoic room; 21, the sound absorption anechoic room.

Referring to Fig. 1, in this embodiment, the number of turns of the tubulation (9) that sound absorbent (11) is peripheral is two circles.

Claims

1, a kind of Muffling tower, tower body (6) with tubular shape, be fixed on (2) at the bottom of the plate shaped tower of tower body (6) bottom and be fixed on tower body (6) top and the cat head (13) of the hemisphere hull shape that is connected with tower body (6) inside, (2) below has suction tude (1) at the bottom of tower, cat head (13) top has exhaust pipe (15), it is characterized in that, has the plate shaped cone shell base plate (3) that tabula is connected mutually in the tower body (6) of (2) top in tower body (6) and with tower body (6) at the bottom of the tower, have higher outer cone housing (7) that bottom and tower body (6) and cone shell base plate (3) be connected mutually and lower female cone housing (4) in the tower body (6) of cone shell base plate (3) top, the suction tude (1) of (2) below is upward through the perforate on (2) and cone shell base plate (3) at the bottom of the tower and follows them to be connected mutually at the bottom of the tower, and suction tude (1) communicates with female cone housing (4) inside, on having in the outer cone housing (7), the lower end is separated into two-part vertical dividing plate (8) with outer cone housing (7) top links to each other with female cone housing (4) top with female cone housing (4) outer cone housing (7) inner space in addition respectively, all have air outlet hole (5) on female cone housing (4) and the outer cone housing (7), has the lateral partitions (10) that is connected mutually with tower body (6) in the tower body (6) of outer cone housing (7) top, the centre of lateral partitions (10) has that top is tubular shape and the bottom is the sound absorbent (11) that passes the perforate on the lateral partitions (10) and be connected with it of inverted cone housing shape, the horizontal microperforated panel (12) that sound absorbent (11) inside is being connected and is having micropore, top with outer cone housing (7) at the bottom of the awl of sound absorbent (11) links to each other, at least have in the peripheral tower body (6) of sound absorbent (11) circle with sound absorbent (11) center be the center of circle evenly distributed pass the perforate on the lateral partitions (10) and be connected in several tubulations (9) on the lateral partitions (10), the center of cat head (13) is fixed with the qualification hush tube (14) that is connected with its inside, and the exhaust pipe (15) that limits hush tube (14) and cat head (13) top is connected with qualification hush tube (14).

2, Muffling tower as claimed in claim 1 is characterized in that, the number of turns of the tubulation (9) that sound absorbent (11) is peripheral is two circles.