Composite exhaust silencer

Abstract

The invention discloses a composite exhaust silencer, and relates to the technical field of silencing equipment, the composite exhaust silencer comprises a silencer main body, a flange plate is arranged at the air inlet end of the silencer main body, a placing seat is arranged at the exhaust end of the silencer main body, a filter screen movably covering an exhaust port of the silencer main body is movably inserted into the placing seat, and a limiting mechanism is arranged on the filter screen. A pop-up mechanism is arranged on one side of the filter screen, a shielding device is arranged at the top of the placement seat, and the shielding device comprises a supporting mechanism, a jacking mechanism, a rotating mechanism and a shielding mechanism; the supporting mechanism is used for installing the jacking mechanism and the shielding mechanism and comprises supporting legs arranged at the top of the containing base, and the tops of the supporting legs are connected with a fixing disc, so that other sundries are prevented from entering the silencer body through the exhaust port, the filter screen can be popped out, then the filter screen can be taken out conveniently, the exhaust direction can be adjusted, and the practicability is high. And meanwhile, the separation blade can shield inclined rain conveniently, and various use requirements are met.

Description

Technical Field

[0001] The present invention relates to the technical field of noise reduction equipment, and particularly to a composite exhaust muffler. Background Technique

[0002] With the further acceleration of China's industrialization process and the further improvement of social and people's livelihood needs, it has become an inevitable trend to strengthen the treatment of various noise sources in industrial enterprises.

[0003] A composite exhaust muffler is a device used to reduce the noise of the exhaust system. It combines multiple noise reduction principles and has good noise reduction effects. The following is a detailed introduction to its structure and principle: Structural composition. Expansion chamber: It consists of pipes with different cross-sectional dimensions. When the cross-section of the pipe suddenly expands or contracts, sound waves are reflected and interfered with during propagation, thereby weakening the noise. Resonance cavity: Usually composed of a closed cavity and connecting pipes. Using the Helmholtz resonance principle, when the sound wave frequency matches the natural frequency of the resonance cavity, resonance is triggered and the sound energy is consumed. Sound-absorbing material: Such as glass fiber, rock wool, polyurethane foam, etc., which is filled inside the muffler to absorb sound waves and convert sound energy into heat energy. Perforated plate: Covered on the surface of the sound-absorbing material, which plays a role in protecting the sound-absorbing material and at the same time allows sound waves to pass through, enabling the sound-absorbing material to play a better role. Outer shell: Generally made of metal materials such as steel plates and aluminum plates, which has good strength and sealing performance and can withstand the pressure and temperature of the exhaust system. Noise reduction principle. Expansion chamber noise reduction: When sound waves propagate in the expansion chamber, due to the change in cross-sectional area, the propagation speed and pressure of the sound waves change, resulting in part of the sound waves being reflected back to the sound source and part of the sound waves interfering and canceling each other, thereby reducing the noise; Resonance cavity noise reduction: When sound waves enter the resonance cavity, it causes the vibration of the air column in the cavity. At the resonance frequency, a large amount of the sound wave energy is absorbed and consumed to achieve noise reduction; Sound-absorbing material noise reduction: When sound waves pass through the sound-absorbing material, the pores and fibers inside the material cause the air to vibrate, and the sound energy is converted into heat energy through friction, viscosity, etc. to achieve the purpose of sound absorption and noise reduction.

[0004] In the prior art, a filtering mechanism is not provided at the exhaust port of the muffler. Some sundries are likely to enter the main body of the muffler through the exhaust port, the exhaust direction cannot be adjusted, it is not convenient for the baffle to block oblique rain, and it cannot meet various usage requirements. Therefore, we propose a composite exhaust muffler to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a composite exhaust muffler to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A composite exhaust muffler, comprising a muffler main body, a flange plate is provided at the air inlet end of the muffler main body, a placing seat is provided at the exhaust end of the muffler main body, a filter screen that movably inserts into the placing seat and covers the exhaust port of the muffler main body is provided on the placing seat, a limiting mechanism is provided on the filter screen, a pop-up mechanism is provided on one side of the filter screen, and a shielding device is provided on the top of the placing seat. The shielding device includes a support mechanism, a jacking mechanism, a rotating mechanism and a shielding mechanism;

[0008] The support mechanism is used to install the jacking mechanism and the shielding mechanism. The support mechanism includes legs provided on the top of the placing seat, and a fixed disk is connected to the top of the legs;

[0009] The jacking mechanism is used to push the shielding mechanism to tilt to one side. The jacking mechanism includes a guide rail provided on the fixed disk, a slider is slidably clamped in the guide rail, and a telescopic push rod for lifting is hinged on the slider;

[0010] The rotating mechanism is used to drive the jacking mechanism to rotate. The rotating mechanism includes a rotating disk hinged to the top end of the telescopic push rod at the bottom, a tooth seat is provided on the rotating disk, and the tooth seat meshes with the gear on the motor to drive the rotating disk to rotate;

[0011] The shielding mechanism is used to limit the direct discharge of gas from the muffler main body. The shielding mechanism includes a support shaft that rotatably penetrates the rotating disk, a ball socket is connected to the bottom of the support shaft, a ball head for matching the ball socket is provided at the lower end of the ball socket, and a baffle for restricting rainwater from directly falling into the exhaust end of the muffler main body is connected to the top of the support shaft.

[0012] Further, the pop-up mechanism is used to push the filter screen to move away from the placing seat.

[0013] Further, the limiting mechanism is used to limit the filter screen from leaving the placing seat. The limiting mechanism includes a screw rod that movably penetrates the placing seat, the bottom of the screw rod is threadedly connected to a threaded hole for restricting the filter screen from leaving the placing seat, a handle for assisting in rotating the screw rod is provided at the top of the screw rod, the screw rod vertically penetrates the placing seat, and the threaded hole is provided on the placing seat.

[0014] Further, the pop-up mechanism includes a fixed rod provided on the inner wall of the placing seat, the free end of the fixed rod movably penetrates a spring and inserts into the filter screen, and one end of the spring away from the placing seat movably inserts into a placing groove.

[0015] Further, the placing seat is a hollow cylindrical structure, an opening for movably inserting the filter screen is provided on the side wall of the placing seat, and the diameter of the filter screen is larger than the diameter of the exhaust port of the muffler main body.

[0016] Further, at least two groups of legs are provided, the legs are obliquely provided below the fixed disk, and the diameter of the fixed disk is smaller than the diameter of the filter screen.

[0017] Further, the guide rail is an annular guide rail, the guide rail and the support shaft are concentric, and the slider is used to support the telescopic push rod to slide on the guide rail.

[0018] Further, the rotating disk is rotationally clamped to support the shaft, the tooth seat is of an annular structure, the teeth of the tooth seat are arranged on the inner ring, the tooth seat and the support shaft are concentric, the motor is fixed on the support shaft, and the motor gear is arranged on the output shaft of the motor.

[0019] Further, the length of the support shaft is greater than the length of the telescopic push rod, the bottom of the ball head is connected to the fixed disk, and the bottom diameter of the baffle is greater than the diameter of the main body of the muffler.

[0020] Further, the length of the fixed rod is less than the diameter of the placement seat, the spring is a compression spring, the maximum length of the spring is less than the length of the fixed rod, and the placement groove is opened on the side wall of the filter screen.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. Rotate the handle, the rotation of the handle causes the screw rod to rotate accordingly. The screw rod rotates and separates from the threaded hole, and then the screw rod is pulled out. The screw rod stops restricting the movement of the filter screen towards the opening of the placement seat. The spring returns to its original state and pushes the filter screen to slide on the fixed rod. The filter screen is removed through the placement seat, and then the filter screen can be taken off and replaced, preventing other sundries from entering the main body of the muffler through the exhaust port, enabling the filter screen to pop out, and thus facilitating the removal of the filter screen.

[0023] 2. Drive the telescopic push rod, the telescopic push rod pushes the rotating disk to tilt. The tilting of the rotating disk causes the support shaft to follow and tilt. The support shaft rotates and tilts through the ball socket in the ball head. After the support shaft tilts, the baffle follows and tilts. When the gas is discharged from the exhaust port of the main body of the muffler and contacts the tilted baffle, the gas moves along the baffle to one side. At the same time, the tilted baffle is convenient for blocking oblique rain. Then drive the motor, the gear on the motor meshes with the tooth seat, and pushes the rotating disk to rotate on the support shaft. The rotation of the rotating disk causes the telescopic push rod to follow and rotate. The telescopic push rod slides on the guide rail through the slider. When the telescopic push rod moves to a suitable position, then operate the above steps again to push the support shaft to tilt. It should be noted that before rotating the rotating disk, the support shaft needs to be in a vertical state to ensure that the center of gravity of the support shaft falls on the ball head and the ball socket, enabling the adjustment of the exhaust direction, and at the same time facilitating the baffle to block oblique rain, meeting various usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of the present invention;

[0025] Figure 2 is a schematic structural diagram of the shielding device in the present invention;

[0026] Figure 3 Structural schematic diagram of the rotating mechanism in the present invention;

[0027] Figure 4 Structural schematic diagram of the shielding mechanism in the present invention;

[0028] Figure 5 Structural schematic diagram of the ejecting mechanism in the present invention;

[0029] Figure 6 Structural schematic diagram of the limiting mechanism in the present invention.

[0030] In the figure: 1, muffler main body; 2, flange plate; 3, placing seat; 4, filter screen; 5, limiting mechanism; 6, ejecting mechanism; 7, shielding device; 710, supporting mechanism; 720, jacking mechanism; 730, rotating mechanism; 740, shielding mechanism;

[0031] 51, screw rod; 52, threaded hole; 53, handle;

[0032] 61, fixed rod; 62, spring; 64, placing groove;

[0033] 711, leg; 712, fixed disk;

[0034] 721, guide rail; 722, slider; 723, telescopic push rod;

[0035] 731, rotating disk; 732, tooth seat; 733, motor;

[0036] 741, support shaft; 742, ball socket; 743, ball head; 744, retaining piece. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] Please refer to Figure 1-6 , a composite exhaust muffler, including a muffler main body 1, a flange plate 2 is provided at the air inlet end of the muffler main body 1, the flange plate 2 is connected to the source exhaust port, and a placing seat 3 is provided at the exhaust end of the muffler main body 1.

[0039] The resonance cavity in the muffler main body 1 operates based on the Helmholtz resonance principle. The resonance cavity consists of a closed cavity and a connecting pipe. A large amount of sound-absorbing materials, such as fiberglass, rock wool, polyurethane foam, etc., are filled inside the muffler main body 1. The sound-absorbing materials are evenly filled on the inner wall of the pipe of the muffler main body or in the corresponding cavity.

[0040] A filter screen 4 that movably covers the exhaust port of the muffler main body 1 is inserted into the placing seat 3. The placing seat 3 is a hollow cylindrical structure. An opening for movably placing the filter screen 4 is provided on the side wall of the placing seat 3. The diameter of the filter screen 4 is larger than the diameter of the exhaust port of the muffler main body 1. A limiting mechanism 5 is provided on the filter screen 4. The limiting mechanism 5 is used to limit the filter screen 4 from leaving. A screw rod 51 is threadedly connected to limit the filter screen 4 from leaving the placing seat 3. A handle 53 for assisting in rotating the screw rod 51 is provided at the top of the screw rod 51. The screw rod 51 vertically penetrates the opening of the placing seat 3. A threaded hole 52 is provided at the opening of the placing seat 3. A pop-up mechanism 6 is provided on one side of the filter screen 4. The pop-up mechanism 6 is used to push the filter screen 4 to move away from the placing seat 3. The pop-up mechanism 6 includes a fixed rod 61 provided on the inner wall of the placing seat 3. The free end of the fixed rod 61 movably penetrates the spring 62 and is inserted into the filter screen 4. One end of the spring 62 away from the placing seat 3 movably penetrates into the placing groove 63. The length of the fixed rod 61 is less than the diameter of the placing seat 3. The spring 62 is a compression spring. The maximum length of the spring 62 is less than the length of the fixed rod 61. The minimum length of the spring 62 is less than the length of the placing groove 63. So that after the filter screen 4 enters the placing seat 3, the spring 62 can shorten and enter the placing groove 63. The placing groove 63 is provided on the side wall of the filter screen 4.

[0041] Rotate the handle 53. The rotation of the handle 53 causes the screw rod 51 to rotate accordingly. The rotation of the screw rod 51 separates from the threaded hole 52, and then the screw rod 51 is withdrawn. The screw rod 51 stops restricting the filter screen 4 from moving towards the opening of the placing seat 3. The spring 62 returns to its original state and pushes the filter screen 4 to slide on the fixed rod 61. The filter screen 4 is removed through the placing seat 3, and then the filter screen 4 can be taken off and replaced, preventing other sundries from entering the muffler main body 1 through the exhaust port, enabling the filter screen 4 to pop out, and thus facilitating the removal of the filter screen.

[0042] The top of the placement seat 3 is provided with a shielding device 7, and the shielding device 7 includes a support mechanism 710, a jacking mechanism 720, a rotating mechanism 730, and a shielding mechanism 740; the support mechanism 710 is used to install the jacking mechanism 720 and the shielding mechanism 740. The support mechanism 710 includes legs 711 provided on the top of the placement seat 3. The top of the legs 711 is connected with a fixed disk 712. There are at least two groups of legs 711. The legs 711 are inclined below the fixed disk 712. The diameter of the fixed disk 712 is smaller than the diameter of the filter screen 4. The jacking mechanism 720 is used to push the shielding mechanism 740 to tilt to one side. The jacking mechanism 720 includes a guide rail 721 provided on the fixed disk 712. A slider 722 is slidably clamped in the guide rail 721. An expansion push rod 723 for lifting is hinged on the slider 722. The guide rail 721 is an annular guide rail, and the guide rail 721 is concentric with the support shaft 741. The sliding block 722 is used to support the expansion push rod 723 to slide on the guide rail 721. The expansion push rod 723 can be driven by hydraulic, electric, pneumatic and other means;

[0043] The rotating mechanism 730 is used to drive the jacking mechanism 720 to rotate. The rotating mechanism 730 includes a rotating disk 731 hinged to the top end of the expansion push rod 723 at the bottom. A tooth seat 732 is provided on the rotating disk 731. The tooth seat 732 meshes with the gear on the motor 733 to drive the rotating disk 731 to rotate. The rotating disk 731 rotatably clamps the support shaft 741. The tooth seat 732 is an annular structure. The teeth of the tooth seat 732 are provided on the inner ring. The tooth seat 732 is concentric with the support shaft 741. The motor 733 is fixed on the support shaft 741. The gear of the motor 733 is provided on the output shaft of the motor. The shielding mechanism 740 is used to limit the direct discharge of the gas of the muffler main body 1. The shielding mechanism 740 includes a support shaft 741 that rotatably penetrates the rotating disk 731. The bottom of the support shaft 741 is connected with a ball socket 742. A ball head 743 for matching the ball socket 742 is provided at the lower end of the ball socket 742. The rotational friction force between the ball head 743 and the ball socket 742 is greater than the rotational friction force between the support shaft 741 and the rotating disk 731. The top of the support shaft 741 is connected with a baffle 744 for restricting rainwater from directly falling into the exhaust end of the muffler main body 1. The length of the support shaft 741 is greater than the length of the expansion push rod 723. The bottom of the ball head 743 is connected to the fixed disk 712. The bottom diameter of the baffle 744 is greater than the diameter of the muffler main body 1. The baffle 744 is an umbrella-shaped structure.

[0044] Drive the telescopic push rod 723. The telescopic push rod 723 pushes the rotating disk 731 to tilt. The tilting of the rotating disk 731 causes the support shaft 741 to follow the tilt. The support shaft 741 tilts by rotating within the ball socket 742 of the ball head 743. After the support shaft 741 tilts, the baffle 7 follows the tilt. When the gas is discharged from the exhaust port of the muffler main body 1 and contacts the tilted baffle 7, the gas moves along the baffle 7 to one side. At the same time, the tilted baffle 7 is convenient for blocking oblique rain. Then drive the motor 733. The gear on the motor 733 meshes with the tooth seat 732, pushing the rotating disk 731 to rotate on the support shaft 741. The rotation of the rotating disk 731 causes the telescopic push rod 723 to follow the rotation. The telescopic push rod 723 slides on the guide rail 721 through the slider 722. When the telescopic push rod 723 moves to a suitable position, then operate the above steps again to push the support shaft 741 to tilt. It should be noted that before rotating the rotating disk 731, the support shaft 741 needs to be in a vertical state to ensure that the center of gravity of the support shaft 741 falls on the ball head 743 and the ball socket 742, enabling the exhaust direction to be adjusted. At the same time, it is convenient for the baffle 7 to block oblique rain, meeting various usage requirements.

[0045] Working principle: Rotate the handle 53 of the present invention. The rotation of the handle 53 causes the screw rod 51 to follow the rotation. The screw rod 51 rotates and separates from the threaded hole 52, and then the screw rod 51 is withdrawn. The screw rod 51 stops restricting the movement of the filter screen 4 towards the opening of the placement seat 3. The spring 62 returns to its original state, pushing the filter screen 4 to slide on the fixed rod 61. The filter screen 4 is removed through the placement seat 3, and then the filter screen 4 can be taken off and replaced, preventing other sundries from entering the muffler main body 1 through the exhaust port, enabling the filter screen 4 to pop out, and thus facilitating the removal of the filter screen. Drive the telescopic push rod 723. The telescopic push rod 723 pushes the rotating disk 731 to tilt. The tilting of the rotating disk 731 causes the support shaft 741 to follow the tilt. The support shaft 741 tilts by rotating within the ball socket 742 of the ball head 743. After the support shaft 741 tilts, the baffle 7 follows the tilt. When the gas is discharged from the exhaust port of the muffler main body 1 and contacts the tilted baffle 7, the gas moves along the baffle 7 to one side. At the same time, the tilted baffle 7 is convenient for blocking oblique rain. Then drive the motor 733. The gear on the motor 733 meshes with the tooth seat 732, pushing the rotating disk 731 to rotate on the support shaft 741. The rotation of the rotating disk 731 causes the telescopic push rod 723 to follow the rotation. The telescopic push rod 723 slides on the guide rail 721 through the slider 722. When the telescopic push rod 723 moves to a suitable position, then operate the above steps again to push the support shaft 741 to tilt. It should be noted that before rotating the rotating disk 731, the support shaft 741 needs to be in a vertical state to ensure that the center of gravity of the support shaft 741 falls on the ball head 743 and the ball socket 742, enabling the exhaust direction to be adjusted. At the same time, it is convenient for the baffle 7 to block oblique rain, meeting various usage requirements.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A composite exhaust muffler, comprising a muffler main body (1), a flange plate (2) is provided at the air inlet end of the muffler main body (1), a placing seat (3) is provided at the exhaust end of the muffler main body (1), and a filter screen (4) that movably inserts into the placing seat (3) and covers the exhaust port of the muffler main body (1) is provided, and is characterized in that: A limiting mechanism (5) is provided on the filter screen (4). An ejection mechanism (6) is provided on one side of the filter screen (4). A shielding device (7) is provided on the top of the placement seat (3). The shielding device (7) includes a support mechanism (710), a lifting mechanism (720), a rotating mechanism (730), and a shielding mechanism (740); The support mechanism (710) is used to install the lifting mechanism (720) and the shielding mechanism (740). The support mechanism (710) includes legs (711) provided on the top of the placement seat (3), and a fixed disk (712) is connected to the top of the legs (711); The lifting mechanism (720) is used to push the shielding mechanism (740) to tilt to one side. The lifting mechanism (720) includes a guide rail (721) provided on the fixed disk (712). A slider (722) is slidably clamped in the guide rail (721). An expansion push rod (723) for lifting is hinged on the slider (722); The rotating mechanism (730) is used to drive the lifting mechanism (720) to rotate. The rotating mechanism (730) includes a rotating disk (731) hinged to the top end of the expansion push rod (723) at the bottom. A tooth seat (732) is provided on the rotating disk (731). The tooth seat (732) meshes with the gear on the motor (733) to drive the rotating disk (731) to rotate; The shielding mechanism (740) is used to limit the direct discharge of gas from the muffler main body (1). The shielding mechanism (740) includes a support shaft (741) rotatably passing through the rotating disk (731). A ball socket (742) is connected to the bottom of the support shaft (741). A ball head (743) for matching the ball socket (742) is provided at the lower end of the ball socket (742). A baffle (744) for restricting rainwater from directly falling into the exhaust end of the muffler main body (1) is connected to the top of the support shaft (741).

2. The composite exhaust muffler according to claim 1, characterized in that: The ejection mechanism (6) is used to push the filter screen (4) to move away from the placement seat (3).

3. The composite exhaust muffler according to claim 1, wherein: The limiting mechanism (5) is used to limit the filter screen (4) from leaving the placement seat (3). The limiting mechanism (5) includes a screw rod (51) movably passing through the placement seat (3). The bottom of the screw rod (51) is threadedly connected to a threaded hole (52) to limit the filter screen (4) from leaving the placement seat (3). A handle (53) for assisting in rotating the screw rod (51) is provided at the top of the screw rod (51). The screw rod (51) vertically passes through the placement seat (3), and the threaded hole (52) is provided on the placement seat (3).

4. The composite exhaust muffler according to claim 2, characterized in that: The ejection mechanism (6) includes a fixed rod (61) provided on the inner wall of the placement seat (3). The free end of the fixed rod (61) movably passes through a spring (62) and is inserted into the filter screen (4). One end of the spring (62) away from the placement seat (3) is movably inserted into a placement groove (63).

5. The composite exhaust muffler according to claim 1, characterized in that: The placement seat (3) is a hollow cylindrical structure. An opening for movably inserting the filter screen (4) is provided on the side wall of the placement seat (3). The diameter of the filter screen (4) is larger than the diameter of the exhaust port of the muffler main body (1).

6. The composite exhaust muffler according to claim 1, wherein: There are at least two sets of the outriggers (711), the outriggers (711) are inclined and arranged below the fixed disk (712), and the diameter of the fixed disk (712) is smaller than the diameter of the filter screen (4).

7. The composite exhaust muffler according to claim 1, characterized in that: The guide rail (721) is an annular guide rail, the guide rail (721) and the support shaft (741) are concentric, and the sliding block (722) is used to support the telescopic push rod (723) to slide on the guide rail (721).

8. The composite exhaust muffler according to claim 1, wherein: The rotating disk (731) is rotationally clamped to support the shaft (741), the tooth seat (732) is of an annular structure, the teeth of the tooth seat (732) are arranged on the inner ring, the tooth seat (732) and the support shaft (741) are concentric, the motor (733) is fixed on the support shaft (741), and the gear of the motor (733) is arranged on the output shaft of the motor.

9. The composite exhaust muffler according to claim 1, characterized in that: The length of the support shaft (741) is greater than the length of the telescopic push rod (723), the bottom of the ball head (743) is connected to the fixed disk (712), and the bottom diameter of the baffle (744) is greater than the diameter of the muffler main body (1).

10. The composite exhaust muffler according to claim 4, characterized in that: The length of the fixed rod (61) is smaller than the diameter of the placement seat (3), the spring (62) is a compression spring, the maximum length of the spring (62) is smaller than the length of the fixed rod (61), and the placement groove (63) is opened on the side wall of the filter screen (4).

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