Double-cylinder engine silencer

Abstract

The utility model discloses a double-cylinder engine silencer, and belongs to the technical field of noise reduction of water pump units. A silencing barrel is fixed in the protective frame, a plurality of blocking mechanisms are sequentially arranged in the silencing barrel, the airflow speed is reduced through the blocking mechanisms, a main connecting pipe communicated with the silencing barrel is fixed to the outer wall of the silencing barrel, an auxiliary connecting pipe communicated with the main connecting pipe is fixed to the outer wall of the main connecting pipe, and an exhaust pipe communicated with the silencing barrel is fixed to the outer wall of the silencing barrel. The noise reduction device is applied to a water pump unit, airflow exhausted by a double-cylinder gasoline and diesel engine can be guided into the noise reduction barrel, noise reduction treatment is carried out through cooperation of the blocking mechanism and the heat insulation asbestos, and large noise pollution to the environment is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of noise reduction of water pump units, and particularly to a muffler for a twin-cylinder engine. Background Art

[0002] The core parts of a water pump unit applied to aspects such as agricultural irrigation, industrial water use, construction sites, fire rescue, and mine drainage mainly include a water pump and a twin-cylinder gasoline or diesel engine. To meet specific fluid transportation requirements, the water pump is responsible for transporting liquids, and the twin-cylinder gasoline or diesel engine provides the necessary power.

[0003] In current water pump units, for the commonly used twin-cylinder gasoline or diesel engine, when the exhaust gas is discharged from the exhaust position of the cylinder head, the generated gas noise will cause relatively large noise pollution to the environment.

[0004] Based on this, the utility model designs a muffler for a twin-cylinder engine to solve the above problems. Summary of the Invention

[0005] The purpose of the utility model is to provide a muffler for a twin-cylinder engine to solve the above technical problems.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A muffler for a twin-cylinder engine, comprising: a protective frame; a muffler cylinder is fixed inside the protective frame, a plurality of blocking mechanisms are sequentially arranged inside the muffler cylinder, the air flow speed is reduced through the blocking mechanisms, a main connecting pipe communicated with the muffler cylinder is fixed on the outer wall of the muffler cylinder, a secondary connecting pipe communicated with the main connecting pipe is fixed on the outer wall of the main connecting pipe, and an exhaust pipe communicated with the muffler cylinder is fixed on the outer wall of the muffler cylinder.

[0007] Preferably, the blocking mechanism comprises heat-insulating asbestos, a plurality of partition plates, and conduits. The plurality of partition plates are sequentially fixed on the inner wall of the muffler cylinder, dividing the inside of the muffler cylinder into a plurality of cavities, and conduits are fixedly penetrated through the outer walls of the plurality of partition plates.

[0008] Preferably, the heat-insulating asbestos is fixedly laid on the inner wall of the muffler cylinder.

[0009] Preferably, the conduits of the plurality of partition plates are arranged in a staggered manner.

[0010] Compared with the prior art, the beneficial effect of the utility model is that in a water pump unit, the air flow discharged from a twin-cylinder gasoline or diesel engine can be introduced into the muffler cylinder, and through the cooperation of the blocking mechanism and the heat-insulating asbestos, noise reduction treatment is carried out to avoid causing relatively large noise pollution to the environment. Description of the Drawings

[0011] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0012] Figure 1 It is a schematic diagram of the overall structure of this embodiment;

[0013] Figure 2 It is a schematic diagram highlighting the structure of the silencing cylinder of this embodiment;

[0014] Figure 3 It is a schematic diagram highlighting the barrier mechanism of this embodiment.

[0015] In the drawings, the list of components represented by each reference numeral is as follows:

[0016] 1. Protective frame; 2. Silencing cylinder; 3. Main connecting pipe; 4. Sub-connecting pipe; 5. Exhaust pipe; 6. Partition board; 7. Duct; 8. Heat-insulating asbestos. Specific implementation manners

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0018] Please refer to Figures 1-3 , the present utility model provides a technical solution: a silencer for a twin-cylinder engine, comprising: a protective frame 1; a silencing cylinder 2 is fixed inside the protective frame 1, and a plurality of barrier mechanisms are sequentially arranged inside the silencing cylinder 2 to reduce the air flow speed through the barrier mechanisms. The outer wall of the silencing cylinder 2 is fixed with a main connecting pipe 3 communicating with it, the outer wall of the main connecting pipe 3 is fixed with a sub-connecting pipe 4 communicating with it, and the outer wall of the silencing cylinder 2 is fixed with an exhaust pipe 5 communicating with it;

[0019] The protective frame 1 is flatter to assist the silencing cylinder 2 and can be stably installed on the water pump unit. By using the main connecting pipe 3 and the sub-connecting pipe 4, the exhaust parts of the cylinder heads of the twin-cylinder gasoline and diesel engines of the water pump unit are simultaneously connected to receive the exhaust gas discharged by them and convey it to the silencing cylinder 2 for silencing and noise reduction treatment. Inside the silencing cylinder 2, the entering air flow is blocked and decelerated by its barrier mechanism to achieve the purpose of noise reduction.

[0020] Preferably, the blocking mechanism includes heat-insulating asbestos 8, a plurality of partition plates 6 and conduits 7. The plurality of partition plates 6 are sequentially fixed to the inner wall of the silencing cylinder 2, dividing the inside of the silencing cylinder 2 into a plurality of cavities. The outer walls of the plurality of partition plates 6 are all fixedly penetrated with conduits 7;

[0021] The partition plates 6 in the blocking mechanism cooperate with the silencing cylinder 2 to form cavities. Relying on the plurality of cavities, the air flow forms a vortex, achieving the purpose of blocking and decelerating. After deceleration, it is then transported by the conduit 7 for multiple times of blocking and decelerating.

[0022] Preferably, the heat-insulating asbestos 8 is fixedly laid on the inner wall of the silencing cylinder 2;

[0023] The heat-insulating asbestos 8 can provide heat insulation and protection, and also provide a certain silencing ability, as well as prevent the metal silencing cylinder 2 from deforming.

[0024] Preferably, the conduits 7 of the plurality of partition plates 6 are arranged in a staggered manner;

[0025] The conduits 7 of the partition plates 6 are arranged in a staggered manner, which is convenient for the air flow in the cavity to form a vortex for deceleration.

[0026] A specific application of this embodiment is: connecting the cylinder head exhaust part of a double-cylinder gasoline-diesel engine through the main connecting pipe 3 and the auxiliary connecting pipe 4, guiding the discharged air flow into the silencing cylinder 2, and transporting it by the staggered conduits 7, passing through a plurality of cavities in sequence, generating a vortex state to decelerate the gas. At the same time, through the heat-insulating asbestos 8 on the inner wall of the silencing pipe, the energy of the sound wave is absorbed and heat insulation protection is provided for further noise reduction treatment, and then the processed air flow is output through the exhaust pipe 5.

[0027] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front part", "center", "both ends", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "set", "connected", "fixed", "swiveling connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A twin-cylinder engine muffler, characterized in that: include: A protective frame (1); a silencer (2) is fixed inside the protective frame (1); a plurality of blocking mechanisms are arranged in sequence inside the silencer (2); the airflow velocity is reduced by the blocking mechanisms; a main connecting pipe (3) connected to the silencer (2) is fixed to the outer wall of the silencer (2); a secondary connecting pipe (4) connected to the main connecting pipe (3) is fixed to the outer wall of the main connecting pipe (3); and an exhaust pipe (5) connected to the silencer (2) is fixed to the outer wall of the silencer (2).

2. A twin-cylinder engine muffler according to claim 1, characterized in that: The barrier mechanism comprises thermal insulation asbestos (8), a plurality of partitions (6) and a conduit (7); the plurality of partitions (6) are fixed to the inner wall of the silencer (2) in sequence to divide the interior of the silencer (2) into a plurality of cavities; and the outer walls of the plurality of partitions (6) are all penetrated and fixed with a conduit (7).

3. A twin-cylinder engine muffler according to claim 2, characterized in that: The heat insulating asbestos (8) is fixedly laid on the inner wall of the silencer (2).

4. A twin-cylinder engine muffler according to claim 2, characterized in that: The conduits (7) of the plurality of partitions (6) are arranged in a staggered manner.

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