Diesel engine spark extinguishing silencer

Abstract

The utility model discloses a spark extinguishing silencer for a diesel engine. The spark extinguishing silencer comprises a silencer body. Noise reduction pads are installed at the two ends of the interior of the silencer, a filter screen is installed in the noise reduction pad on the side, close to the air outlet pipe, of the silencer, and a first conical hole plate, a second conical hole plate and a third conical hole plate are sequentially installed in the silencer. Damping seats are installed between one side of the first taper hole plate and the silencer and between one side of the third taper hole plate and the silencer, and dampers are installed between the first taper hole plate and the second taper hole plate and between the second taper hole plate and the third taper hole plate. After entering the silencer, gas is decelerated and primarily filtered through the first conical hole plate, the second conical hole plate and the third conical hole plate, and the first conical hole plate, the second conical hole plate and the third conical hole plate are damped through the damping seat and the damper, so that the phenomenon that the gas is damaged due to large impact force of the gas is avoided; and therefore, the silencer is severely vibrated.

Description

Technical Field

[0001] The utility model relates to the technical field of mufflers, in particular to a spark extinguishing muffler for a diesel engine. Background Art

[0002] A silencer is a noise reduction device that can be used in air flow ducts that also transmit noise, such as pipes and elbows with sound-absorbing linings, or pipes with sudden changes in cross-sectional area and other discontinuous acoustic impedance, to attenuate or reflect the noise in the duct.

[0003] Chinese patent number CN201621203973.6 discloses a disc-type spark extinguishing muffler, which relates to the technical field of engine exhaust safety equipment, including a closed cylinder and a vortex-shaped guide plate arranged in the cylinder, the guide plate divides the cylinder into a one-way spiral channel and is seamlessly fixed to the side wall of the cylinder, the center of the guide plate is connected to the intake pipe along the tangent direction, and the end is connected to the side wall of the cylinder with the outlet pipe, and an ash box connected to the cylinder is provided on the side wall of the cylinder near the outlet pipe, and the ash box is provided with a baffle in the opposite direction of the extension direction of the guide plate at the connection with the side wall of the cylinder, and a muffler is also provided in the cylinder. When the prior art is in use, due to the high air flow speed, the air suddenly slows down inside the muffler, causing the inside of the muffler to be subjected to a large impact force, which causes the muffler to vibrate greatly when in use and generate a large noise. Utility Model Content

[0004] The utility model aims to provide a spark extinguishing muffler for a diesel engine to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a spark extinguishing muffler for a diesel engine, comprising a muffler; an air inlet pipe is installed at one end of the muffler, an air outlet pipe is installed at the other end of the muffler, an ash outlet pipe is installed at a position below the muffler, and flanges are installed at the positions of the ash outlet pipe, the air inlet pipe and one end of the air outlet pipe, and silencer pads are installed at both ends of the muffler, and a filter is installed inside the silencer pad on the side of the muffler close to the air outlet pipe, and a first conical orifice plate, a second conical orifice plate and a third conical orifice plate are installed inside the muffler in sequence, a shock absorbing seat is installed on one side of the first conical orifice plate and between the muffler and one side of the third conical orifice plate and the muffler, and vibration dampers are installed between the first conical orifice plate and the second conical orifice plate and between the second conical orifice plate and the third conical orifice plate.

[0006] Preferably, the shock absorber is composed of an insert rod and an insert tube, the two insert rods are slidably mounted at two ends of the insert tube respectively, and a spring is installed at a middle position inside the insert tube.

[0007] Preferably, a limit plate is welded to the insert rod at an inner position of the insert tube, and damping sleeves are installed at inner positions at both ends of the insert tube.

[0008] Preferably, a reinforcement layer is provided inside the muffler, and the reinforcement layer is adhered to the inside of the muffler by adhesive.

[0009] Preferably, a high temperature resistant layer is provided inside the sound-absorbing pad, and the high temperature resistant layer is adhered to the inside of the sound-absorbing pad by adhesive.

[0010] Preferably, a soft metal pad is provided at the outer side of the flange, and the soft metal pad is welded at the outer side of the flange.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. After the gas enters the muffler, it is decelerated and initially filtered through the first conical orifice plate, the second conical control plate and the third conical orifice plate. The first conical orifice plate, the second conical control plate and the third conical orifice plate are damped through the damping seat and the vibration absorber to avoid violent vibration of the muffler due to the large impact force of the gas;

[0013] 2. The shock absorber can play a shock-absorbing role through the contraction and expansion of the spring when in use;

[0014] 3. The setting of the limit plate is used to limit the range of motion of the plug rod, and the setting of the damping sleeve is used to increase the friction between the plug rod and the plug tube to avoid the shaking phenomenon between the plug rod and the plug tube during use;

[0015] 4. The setting of the high temperature resistant layer can increase the high temperature resistance of the silencer pad and avoid damage to the silencer pad caused by high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the sound-absorbing pad of the utility model;

[0020] Figure 4 It is a schematic diagram of the structure of the shock absorber of the utility model.

[0021] In the figure: 1, silencer; 2, air inlet pipe; 3, air outlet pipe; 4, soft metal pad; 5, flange; 6, ash outlet pipe; 7, silencer pad; 8, first conical orifice plate; 9, second conical orifice plate; 10, shock absorber seat; 11, filter screen; 12, third conical orifice plate; 13, shock absorber; 14, reinforcement layer; 15, high temperature resistant layer; 16, damping sleeve; 17, insert tube; 18, spring; 19, insert rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 In the embodiment of the utility model, a spark extinguishing muffler for a diesel engine comprises a muffler 1; an air inlet pipe 2 is installed at one end of the muffler 1, an air outlet pipe 3 is installed at the other end of the muffler 1, an ash outlet pipe 6 is installed at the lower position of the muffler 1, and flanges 5 are installed at one end of the ash outlet pipe 6, the air inlet pipe 2 and the air outlet pipe 3, and silencer pads 7 are installed at both ends of the muffler 1, and a filter screen 11 is installed inside the silencer pad 7 on the side of the muffler 1 close to the air outlet pipe 3, and a first conical orifice plate 8, a second conical orifice plate 9 and a third conical orifice plate 12 are installed in sequence inside the muffler 1, a shock absorbing seat 10 is installed on one side of the first conical orifice plate 8 and between one side of the muffler 1 and the third conical orifice plate 12 and the muffler 1, and a vibration damper 13 is installed between the first conical orifice plate 8 and the second conical orifice plate 9 and between the second conical orifice plate 9 and the third conical orifice plate 12.

[0024] The shock absorber 13 is composed of an insert rod 19 and an insert tube 17. The two insert rods 19 are slidably mounted at the two ends of the insert tube 17. A spring 18 is installed in the middle of the insert tube 17. The shock absorber 13 can play a shock absorbing role through the contraction and expansion of the spring 18 when in use. A limit plate is welded to the insert rod 19 at the internal position of the insert tube 17. Damping sleeves 16 are installed at the internal positions of the two ends of the insert tube 17. The limit plate is used to limit the range of motion of the insert rod 19. At the same time, the damping sleeve 16 is used to increase the friction between the insert rod 19 and the insert tube 17 to avoid the shaking phenomenon between the insert rod 19 and the insert tube 17 when in use.

[0025] A reinforcing layer 14 is provided inside the muffler 1 and is adhered to the inside of the muffler 1 by adhesive. The carbon fiber plate used in the reinforcing layer 14 has strong hardness, which can increase the compression resistance of the muffler 1 and prevent the muffler 1 from being deformed due to impact or pressure.

[0026] A high temperature resistant layer 15 is provided inside the sound-absorbing pad 7, and the high temperature resistant layer 15 is adhered to the inside of the sound-absorbing pad 7 by adhesive. The provision of the high temperature resistant layer 15 can increase the high temperature resistance of the sound-absorbing pad 7 and avoid damage to the sound-absorbing pad 7 caused by high temperature.

[0027] A soft metal pad 4 is arranged on the outer side of the flange 5 and is welded to the outer side of the flange 5. The soft metal pad 4 is relatively soft in texture. When the flange 5 is installed, the soft metal pad 4 will be deformed under pressure to fill the gap between the flange 5 and the mounting base, so that the installation of the air inlet pipe 2 and the air outlet pipe 3 is more stable.

[0028] The working principle and use process of the utility model are as follows: when in use, the gas enters the muffler 1 through the air intake pipe 2, and the gas entering the muffler 1 is silenced by the muffler pad 7. After the gas enters the muffler 1, it is decelerated and primarily filtered by the first conical orifice plate 8, the second conical control plate and the third conical orifice plate 12. The first conical orifice plate 8, the second conical control plate and the third conical orifice plate 12 are damped by the shock absorber seat 10 and the shock absorber 13 to avoid the muffler 1 from vigorous vibration due to the large impact force of the gas. After the gas contacts the first conical orifice plate 8, the second conical control plate and the third conical orifice plate 12, larger solid particles will be blocked and then fall. At the same time, when the gas is discharged through the gas storage pipe, the filter screen 11 can further filter the gas, and the dust generated after filtering is discharged through the ash outlet pipe 6.

[0029] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A diesel engine spark extinguishing muffler, comprising a muffler (1); characterized in that: An air inlet pipe (2) is installed at one end of the muffler (1), an air outlet pipe (3) is installed at the other end of the muffler (1), an ash outlet pipe (6) is installed at the lower position of the muffler (1), and flanges (5) are installed at one end of the ash outlet pipe (6), the air inlet pipe (2) and the air outlet pipe (3). Silencing pads (7) are installed at both ends of the muffler (1), and a filter screen (1) is installed inside the silencing pad (7) on the side of the muffler (1) close to the air outlet pipe (3). 1), a first conical orifice plate (8), a second conical orifice plate (9) and a third conical orifice plate (12) are sequentially installed inside the muffler (1), a shock-absorbing seat (10) is installed between one side of the first conical orifice plate (8) and the muffler (1) and one side of the third conical orifice plate (12) and the muffler (1), and a vibration damper (13) is installed between the first conical orifice plate (8) and the second conical orifice plate (9) and between the second conical orifice plate (9) and the third conical orifice plate (12).

2. A diesel engine spark extinguishing muffler according to claim 1, characterized in that: The shock absorber (13) is composed of an insertion rod (19) and an insertion tube (17). The two insertion rods (19) are slidably mounted at the two ends of the insertion tube (17), and a spring (18) is mounted at the middle position inside the insertion tube (17).

3. A diesel engine spark extinguishing muffler according to claim 2, characterized in that: The insert rod (19) is welded with a limit plate at an internal position of the insert cylinder (17), and damping sleeves (16) are installed at internal positions at both ends of the insert cylinder (17).

4. A spark extinguishing muffler for a diesel engine according to claim 1, characterized in that: A reinforcement layer (14) is provided inside the muffler (1), and the reinforcement layer (14) is adhered to the inside of the muffler (1) by means of adhesive.

5. A diesel engine spark extinguishing muffler according to claim 1, characterized in that: A high temperature resistant layer (15) is provided at an inner position of the sound absorbing pad (7), and the high temperature resistant layer (15) is adhered to the inner position of the sound absorbing pad (7) by means of adhesive.

6. A diesel engine spark extinguishing muffler according to claim 1, characterized in that: A soft metal gasket (4) is arranged at the outer side of the flange (5), and the soft metal gasket (4) is welded to the outer side of the flange (5).

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