CN2250427Y - Silencer for preventing combustion explosion of combustible gas - Google Patents

Abstract

The utility model relates to a silencer for preventing combustion explosion of combustible gas, belonging to the installation kit for automobiles. The utility model is mainly used for silencing for the automobiles and preventing the combustion explosion of the combustible gas to bring on fire. The utility model is characterized in that the silencer is composed of a gas inlet pipe, an outer sleeve pipe, a filtering net, a split flow pipe, a radiating pipe, a back outer sleeve pipe, the filtering net, a non-return valve, a spring and a tail pipe in sequence from front to back in the direction of the travel of the gas exhaust flow. Each pipe body is mutually connected into a whole by welding and bolts and nuts. The utility model has the advantages of simple structure, convenient installation and operation, firmness, durability, safety, power saving, large silencing quantity, etc., the fire caused by the gas exhaust for starting the automobiles in the area of easy combustion and explosion can be eliminated fundamentally.

Description

The silencing apparatus that anti-inflammable gas fires

The silencing apparatus that a kind of anti-inflammable gas fires belongs to the auto-parts technical field, is mainly used on the automobile to eliminate the noise and prevent inflammable gas from firing and the fire that causes.

Fire for preventing to cause because of automobile exhaust in prior art mostly installs Flue isolation additional again on the former silencing apparatus of wearing of automobile.Though can reach certain flameproof effect like this, but operate very inconvenient, Flue isolation is easily lost, and in case lost the driver and not note again car driven in the inflammable and explosive operating area and go, instead easilier cause fire or explosive accident, adding Flue isolation in addition not only increases cost, and exhaust resistance is big after having added Flue isolation, has increased the power consumption of automobile.In recent years, domestic some automobile plant manufactured experimently the fire prevention silencing apparatus, but because structure is not too reasonable, only played anti-fire action in the ordinary course of things, but still breaking out of fire unavoidably when automobile enters higher regional of combustable gas concentration.

It is a kind of simple in structure that the purpose of this utility model is to provide, it is all convenient to install and use, when automobile flameout, can stop extraneous inflammable gas to enter in the silencing apparatus cavity, not only the Mars in the exhaust extinguishes substantially when automobile relaunches, and delivery temperature has also been reduced to below the soot particles burning-point, even the motor vehicle environment combustable gas concentration is very big, the also silencing apparatus that fires of anti-inflammable gas that can breaking out of fire.

Its silencing apparatus can present negative pressure at short notice during according to automobile flameout, combustible gas physical efficiency in the atmosphere enters this objective fact of silencing apparatus inner chamber, at the subject matter that exists in the prior art, basic design of the present utility model is: transformed on the basis of known silencing apparatus, promptly in the outer sleeve cavity of the back segment of suction tude and heat dissipating pipe back, set up two-stage can filtering exhaust in the filter screen of contained carbon granules, and set up one outside between tube ends and the tail pipe and behind automobile flameout, can stop the inflammable gas in the atmosphere to enter the check valve of silencing apparatus inner chamber, thereby realize purpose of design.

The silencing apparatus that anti-inflammable gas described in the utility model fires; press the blast air direct of travel successively by suction tude [1]; outer sleeve [8]; ram's horns [2]; heat dissipating pipe [3] and tail pipe [7] constitute; it is characterized in that this silencing apparatus is equipped with filter screen [4] in the outer sleeve [8] of the back segment of above-mentioned suction tude [1] and heat dissipating pipe [3] back so as when to start up the car in the exhaust filtering of contained carbon granules Mars extinguish; and between outer sleeve [8] end and tail pipe [7], resistant to elevated temperatures check valve [5] is housed by spring [6]; close by means of negative pressure valve during with convenient automobile flameout and keep closed state by means of elastic force and enter in the silencing apparatus cavity to stop the inflammable gas in the atmosphere, each above-mentioned body is interconnected into an integral body by welding mutually with bolt and nut [9] and packing ring.

Above-mentioned outer sleeve [8] is divided into two sections of front and back, and above-mentioned heat dissipating pipe [3] is clipped in the middle, and leading portion is long slightly, and back segment is shorter.

Above-mentioned tail pipe [7] is the funnel-like of being with flanging, and above-mentioned check valve [5] and spring [6] are placed in its funnel.

The utility model has the advantages that: simple in structure, easy to install, two-stage filter screen and check valve have only been increased than public silencing apparatus, but thoroughly solved the problem that when automobile enters inflammable and explosive zone and relaunches after flame-out again Mars in the exhaust can cause fire or explosive accident, safe and reliable, sturdy and durable, can not lose, power loss is less than 3%, and sound deadening capacity does not contain Mars more than 16 decibels in the exhaust.

Accompanying drawing is that one of the utility model most preferred embodiment assembling back bulk shape is vertically partly cutd open front elevational schematic.

1 suction tude among the figure, 2 ram's hornss, 3 heat dissipating pipes, 4 filter screens, 5 check valves, 6 springs, 7 tail pipes, 8 outer sleeves, 9 bolt and nuts.

With most preferred embodiment structure characteristic of the present utility model further is summarized as follows in conjunction with the accompanying drawings: in the bigger outer sleeve 8 of diameter, be equipped with and be drilled with the suction tude 1 that many φ 3.5mm circular holes form tubular filter screen 4 on its back segment pipe arm, ram's horns 2 is equipped with in the back upper place of suction tude 1 in outer sleeve 8, one section heat dissipating pipe 3 that has radiating fin of welding between two sections outer sleeves 8, the tubulose secondary filter screen 4 of φ 3.5mm circular hole also is housed in outer sleeve 8 thereafter, terminal at back segment outer sleeve 8 by bolt and nut 9, the funnelform tail pipe 7 of band flanging is housed, by spring 6 check valve 5 is housed in its funnel.By negative pressure and spring force check valve 5 is pressed on the end of outer sleeve 8 when automobile extinguishes, blast air is pushed valve open when relaunching.

Claims (3)

1, the silencing apparatus that fires of a kind of anti-inflammable gas, pressing the blast air direct of travel is made of suction tude [1], outer sleeve [8], ram's horns [2], heat dissipating pipe [3] and tail pipe [7] successively, it is characterized in that this silencing apparatus is equipped with filter screen [4] in the outer sleeve [8] of the back segment of above-mentioned suction tude [1] and heat dissipating pipe [3] back, and between outer sleeve [8] end and tail pipe [7], resistant to elevated temperatures check valve [5] being housed by spring [6], each above-mentioned body is interconnected into an integral body by welding mutually with bolt and nut [9] and packing ring.

2, the silencing apparatus that fires of anti-inflammable gas according to claim 1, it is characterized in that above-mentioned outer sleeve [8] be divided into before and after two sections, above-mentioned heat dissipating pipe [3] is clipped in the middle, leading portion is long slightly, back segment is shorter.

3, the silencing apparatus that fires of anti-inflammable gas according to claim 1 is characterized in that above-mentioned tail pipe [7] is the funnel-like of being with flanging, and above-mentioned check valve [5] and spring [6] are placed in its funnel.