CN108266248A - A kind of special noise elimination flame dampener - Google Patents

Abstract

The invention discloses a special sound-absorbing flame extinguisher, which comprises a cylinder body, an exhaust-side casing, an intake-side casing, a fixed inner hexagonal screw and an inlet flange interface, and one side of the exhaust-side casing is provided with The exhaust hole, one side of the exhaust side shell and the bottom of the exhaust hole are provided with an Allen wrench socket suitable for fixing the hexagon socket head screw, and one side of the air intake side shell is provided with a socket that is compatible with the air intake method. The invention relates to the technical field of sound suppression and flame suppression for piston gasoline engines. The special muffler and flame extinguisher can wrap the discharged high-speed and high-temperature gas in the shell, and fill the internal space in two ways through the middle partition, the gas volume expansion temperature drops, and after buffering and cooling, it passes through the exhaust port. Many small holes are gradually exhausted from the outside of the muffler to reduce noise and reduce environmental noise, and consume the flame discharged from the exhaust port of the cylinder in the housing to improve safety.

Description

A special muffler and flame extinguisher

technical field

The invention relates to the technical field of noise elimination and flame extinction for piston-type gasoline engines, in particular to a special noise elimination and flame extinguisher.

Background technique

Gasoline engine is an engine that uses gasoline as fuel to convert internal energy into kinetic energy. Because gasoline has low viscosity and evaporates quickly, when the mixture of gasoline and air enters the cylinder and is compressed to a certain temperature and pressure, it is ignited with a spark plug. Gas expands to do work. Gasoline engines are characterized by high speed, simple structure, light weight, low cost, stable operation, and convenient use and maintenance. Gasoline engines are widely used in the fields of automobiles, light aircraft, motorcycles, agricultural equipment, and portable equipment. According to the different fuel supply methods, gasoline engines can be divided into two categories: carburetor type and injection type.

In actual life, the high-temperature, high-pressure and high-speed flame gas discharged from the exhaust port of the gasoline engine brings loud noise and high-temperature flame danger. The internal volume of the shell is basically close to the volume of exhaust gas produced by a combustion cycle. Noise reduction and flame elimination are further reduced by large volume chamber cushioning.

Contents of the invention

Aiming at the deficiencies of the prior art, the present invention provides a special sound-absorbing flame extinguisher, which solves the problems of high-temperature, high-pressure and high-speed flame gas discharged from the exhaust port of the gasoline engine, which brings about loud noise and high-temperature flame danger.

In order to achieve the above purpose, the present invention is achieved through the following technical proposals: a special noise elimination and flame extinguisher, including a cylinder body, an exhaust side shell, an intake side shell, a fixed hexagon socket head screw and an intake flange interface, the One side of the exhaust side casing is respectively provided with an exhaust hole, and one side of the exhaust side casing and the bottom of the exhaust hole are provided with an inner hexagonal wrench socket suitable for fixing the inner hexagonal screw, and the air intake One side of the side casing is provided with an air inlet that is compatible with the inlet flange interface, and one side of the air inlet side casing and both sides of the air inlet are provided with through holes, and the fixed hexagon socket head screws One end of the through hole and the inlet flange interface are sequentially extended to one side of the inlet flange interface.

Preferably, one end of the fixed inner hexagon screw extending to one side of the inlet flange interface is fixedly connected to one side of the cylinder body.

Preferably, a fixed reinforcement support plate is fixedly connected to one side of the air intake side housing and the top of the air intake port, and a circular hole is opened on the top of the fixed reinforcement support plate.

Preferably, fixed threaded holes are provided on the top of the fixed reinforcement support plate and on both sides of the round hole, and the top of the cylinder body is fixedly connected to the inside of the threaded holes by screws.

Preferably, one side of the exhaust-side shell is fixedly connected to one side of the intake-side shell.

Preferably, one side of the inner wall of the air intake side casing is fixedly connected with a separation partition with an included angle of 145 degrees.

Beneficial effect

The invention provides a special noise elimination and flame extinguisher. Has the following beneficial effects:

(1) The special muffler and flame extinguisher is set through the cooperation of the cylinder body, the exhaust side shell, the intake side shell, the fixed hexagon socket head screw and the intake flange interface, and one side of the exhaust side shell is respectively provided with Exhaust hole, one side of the exhaust side casing and the bottom of the exhaust hole are provided with an Allen wrench socket suitable for fixing hexagon socket screws, and one side of the intake side casing is provided with an inlet flange. The air inlet that matches the interface, one side of the air inlet shell and both sides of the air inlet are provided with through holes, and one end of the fixed hexagon socket screw passes through the through hole and the inlet flange interface in turn and extends to the inlet. One side of the air flange interface is fixed with the inner hexagon screw, and the end extending to the side of the air intake flange interface is fixedly connected with one side of the cylinder body, which can wrap the discharged high-speed and high-temperature gas in the housing, and divide it into two parts through the middle partition plate. The air is filled with the internal space, the volume expansion temperature of the gas decreases, and the speed also decreases. After buffering the temperature and reducing the speed, it is gradually discharged from the outside of the muffler through many small holes arranged at the exhaust end, which can reduce noise and reduce environmental noise. The flame discharged from the exhaust port is consumed in the casing, which improves safety.

(2) The special muffler and flame extinguisher is fixedly connected with a fixed reinforced support plate on the top of the air inlet through one side of the air inlet shell, and a round hole is opened on the top of the fixed reinforced support plate to fix the reinforced support plate There are fixed threaded holes on the top and on both sides of the round hole. The top of the cylinder body is fixedly connected with the inside of the threaded hole by screws, which can further increase the strength of the entire structure and resistance to fatigue cracks and external shocks.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a disassembled view of the structure of the exhaust side shell and the intake side shell of the present invention;

Fig. 3 is a structural combination diagram of the exhaust side casing and the intake side casing of the present invention;

Fig. 4 is a combined cross-sectional view of the structure of the exhaust side shell and the intake side shell of the present invention.

In the figure: 1 cylinder body, 2 exhaust side shell, 3 intake side shell, 4 fixed hexagon socket head screw, 5 intake flange interface, 6 exhaust hole, 7 hexagon wrench socket, 8 air intake, 9 Through hole, 10 round holes, 11 threaded holes, 12 separation partitions, 13 fixed reinforcement support plates.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figures 1-4, the present invention provides a technical solution: a special noise elimination and flame extinguisher, including a cylinder body 1, an exhaust side shell 2, an intake side shell 3, a fixed hexagon socket screw 4 and an air intake method The blue interface 5, one side of the inner wall of the air intake side shell 3 is fixedly connected with a separation partition 12 with an included angle of 145 degrees, which is to divide the combustion exhaust gas entering the shell into two parts and advance at the same time to increase the distance traveled by the gas. Make full use of the effective volume in the shell, and prevent the exhaust gas from rushing directly to the exhaust hole 6, and support the middle position of the circular shell on both sides to prevent the noise and vibration caused by knocking on the metal, and strengthen the strength of the shell, the left and right sides After welding the separator 12 in the middle of the side, the overall strength can be increased to prolong the life of each solder joint to prevent fatigue cracks, and the overall strength can be improved to prevent deformation when impacted by external force. One side of the exhaust side shell 2 and the intake side shell 3 One side of the exhaust side casing 2 is fixedly connected, and one side of the exhaust side casing 2 is respectively provided with exhaust holes 6, and different numbers of exhaust holes 6 are opened on the exhaust side casing 2 according to the design speed of the engine to adjust the noise and limit the engine. Speed function, one side of the exhaust side shell 2 and the bottom of the exhaust hole 6 are provided with an Allen wrench socket 7 that is compatible with the fixed hexagon socket screw 4, and one side of the intake side shell 3 is provided with a The air inlet 8 matched with the air inlet flange interface 5 is provided with a through hole 9 on one side of the air inlet housing 3 and on both sides of the air inlet 8, and one end of the fixed hexagon socket head screw 4 passes through the through hole in turn 9 and the intake flange interface 5 and extend to one side of the intake flange interface 5, the intake side shell 3 is provided with the intake flange interface 5 and the dedicated gasoline engine cylinder exhaust port through two hexagon socket screws 4 , the outer boss is matched with a high-temperature-resistant O-ring to realize the sealing function. The end of the fixed hexagon socket screw 4 extending to the side of the inlet flange interface 5 is fixedly connected with the side of the cylinder body 1, and the inlet is passed through two internal screws. The fixing holes on both sides of the air flange interface 5 are screwed and fixed on the exhaust port of the engine cylinder. One side of the air intake side housing 3 and the top of the air intake 8 are fixedly connected with a fixed reinforcement support plate 13, and the fixed reinforcement support plate 13 The top of the cylinder is provided with a round hole 10, the top of the fixed reinforcement support plate 13 is provided with a fixed threaded hole 11 on both sides of the round hole 10, and the top of the cylinder body 1 is fixedly connected with the inside of the threaded hole 11 by screws. The support plate 13 can further increase the strength and resistance to fatigue cracking and external impact of the entire structure.

When working, the exhaust gas is discharged through the exhaust port of the cylinder when the engine is working in a cycle, and enters the interior of the muffler and flame extinguisher through the inlet flange interface 5, and the high-temperature, high-pressure and high-speed gas rushes into the shell and first contacts the inner wall of the exhaust side shell 2, And reverse and disperse, through the joint restriction of the radial circular inner wall of the shell shell and the middle splitter partition, the split flow is completed. Two airflows are formed from both sides of the splitter partition and the radial circular inner wall, and the gas rushes to the splitter partition. The other half of the housing volume space behind the plate 12 is limited by the shape of the housing. At this time, the gas expands in the large volume of the housing, the speed decreases, and the temperature decreases. The internal volume of the internal muffler flame extinguisher forms a buffer zone, and the gas is slowly and steadily discharged through the exhaust hole 6 opened on the exhaust side shell 2, so as to achieve the purpose of reducing the noise decibel value, and at the same time, it is not burned out in the cylinder body 1 After a small amount of flame enters the shell, the path and time become longer, and the appropriate resistance limit is obtained. The flame gradually disappears before and after passing through the splitter partition, and no flame is ejected after exhausting through the exhaust hole 6.

The manufacturing cost of this solution is low. A set of stamping dies can complete the manufacture of the main component shell, and the two circular shells are welded after butt joint to form the required volume cavity. Different numbers of exhaust holes are set on the exhaust side housing according to the design speed of the engine to adjust the noise and limit the speed of the engine. Divide a part of the combustion exhaust gas entering the shell into about two parts and advance at the same time to increase the distance traveled by the gas, make full use of the effective volume in the shell, and prevent the exhaust gas from rushing directly to the small exhaust hole. The second is to support the middle position of the circular shells on both sides to prevent noise and vibration caused by knocking metal. The third is to strengthen the strength of the shell. After welding the separation partitions in the middle of the left and right sides, the overall strength can be increased to prolong the life of each solder joint to prevent fatigue cracks, and the overall strength can be improved to prevent deformation when impacted by external forces. The intake side shell is provided with an intake flange interface, which is connected with the special gasoline engine cylinder exhaust port through two hexagon socket screws, and the outer boss is equipped with a high temperature resistant O-ring to realize the sealing function, and the outer surface of the same side is welded with a fixed reinforcement The support plate is fixedly linked with two screws on the engine cylinder head through two holes, and the support plate can further increase the strength of the entire structure and resist fatigue cracking and external impact. The design of this scheme is compact and compact, and takes up little space. The four screws are rigidly fixed, and the appearance is beautiful. Insert the hexagonal wrench into the vent hole to realize the installation and removal functions.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or apparatus. without further restrictions.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (6)

1. A special muffler and flame extinguisher, including the cylinder body (1), the exhaust side shell (2), the intake side shell (3), the fixing hexagon socket head screw (4) and the intake flange interface (5) , characterized in that: one side of the exhaust-side shell (2) is respectively provided with exhaust holes (6), and one side of the exhaust-side shell (2) is opened at the bottom of the exhaust hole (6). There is an Allen wrench socket (7) suitable for fixing the Allen screw (4), and one side of the air intake shell (3) is provided with an air intake port suitable for the air intake flange interface (5). port (8), one side of the air intake side housing (3) and both sides of the air intake (8) are provided with through holes (9), and one end of the fixed hexagon socket head screw (4) passes through in turn The through hole (9) and the air inlet flange interface (5) extend to one side of the air inlet flange interface (5). 2. A special muffler and flame extinguisher according to claim 1, characterized in that: the fixed inner hexagon screw (4) extends to one end on the side of the inlet flange interface (5) and the cylinder body (1 ) side fixed connection. 3. A special muffler and flame extinguisher according to claim 1, characterized in that: one side of the air inlet shell (3) and the top of the air inlet (8) are fixedly connected with a fixed reinforcement support plate (13), and a round hole (10) is opened on the top of the fixed reinforcement support plate (13). 4. A special noise elimination and flame extinguisher according to claim 3, characterized in that: fixed threaded holes ( 11), the top of the cylinder body (1) is fixedly connected to the inside of the threaded hole (11) by screws. 5. A special noise elimination and flame extinguisher according to claim 1, characterized in that: one side of the exhaust side shell (2) is fixedly connected to one side of the intake side shell (3). 6. A special noise elimination and flame extinguisher according to claim 1, characterized in that: one side of the inner wall of the inlet side casing (3) is fixedly connected with a separation partition (12) with an included angle of 145 degrees.