A labyrinth muffler

Abstract

The invention discloses a labyrinth muffler, comprising a muffler body for muffler noise source equipment and a mounting mechanism for mounting the muffler body, the muffler body comprising a sound insulation solid plate and a perforated protective plate, the sound insulation solid plate is a cavity structure with an opening at the top, folded flanges are arranged on both sides and the bottom of the sound insulation solid plate, the folded flanges are provided with bolt holes for facilitating workers to mount the muffler body at the ventilation window on the sound insulation cover, sound-absorbing mixed cotton for muffler noise is arranged between the perforated protective plate and the sound insulation solid plate, the invention is installed between the noise source equipment and the ventilation window, when the equipment radiation noise propagates in the direction of the ventilation window, it is reflected by the sound insulation solid plate of the invention, thereby greatly reducing the noise level of the equipment radiation noise directly entering the external environment through the ventilation window, and since the wall surface of the sound insulation cover is mostly a sound-absorbing wall surface, the internal noise is mostly direct sound, so the invention can play the role of a sound barrier.

Description

Technical Field

[0001] The invention relates to the technical field of mufflers, in particular to a labyrinth muffler. Background Art

[0002] In order to achieve better ventilation and cooling effects, the ventilation windows of the soundproof enclosure are mostly set in the area close to the equipment. The radiated noise of the equipment can be directly radiated to the external environment through the ventilation windows, thereby causing excessive noise in the area near the equipment. A muffler is usually used to reduce the noise. A muffler is a device that allows airflow to pass but can prevent or reduce sound propagation. It is an important measure to eliminate aerodynamic noise. However, the ventilation windows of some soundproof enclosures are close to the equipment, and there is not enough space to install conventional ventilation mufflers (such as tubular mufflers, labyrinth mufflers, array mufflers, etc.), resulting in the air inlet becoming a weak sound insulation area of ​​the soundproof enclosure. In addition, multiple people are required to assist in the installation, which increases manpower consumption and costs and is inconvenient to use.

[0003] In view of the above problems, a labyrinth muffler is now designed. Summary of the invention

[0004] The object of the present invention is to provide a labyrinth muffler to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A labyrinth muffler, comprising a muffler body for muffler noise source equipment and a mounting mechanism for mounting the muffler body, the muffler body comprising a sound insulation solid plate and a perforated protective plate, the sound insulation solid plate is a cavity structure with an opening at the top, folded flanges are arranged on both sides and the bottom of the sound insulation solid plate, the folded flanges are provided with bolt holes for workers to install the muffler body at the ventilation window on the soundproof cover, and sound-absorbing mixed cotton for muffler effect is arranged between the perforated protective plate and the sound insulation solid plate;

[0007] The mounting mechanism includes a base, the bottom of the base is provided with moving wheels for facilitating the movement of the base, a mounting groove is provided on the side of the base, the mounting groove is connected to the inner cavity of the base, a reinforcement component for reinforcing the position of the base is provided in the mounting groove, two telescopic rods are symmetrically arranged along the central axis of the base on the top of the base, a first receiving plate and a second receiving plate are provided above the two telescopic rods, the top of one of the telescopic rods is fixedly connected to the bottom of the second receiving plate, and the other telescopic rod is detachably connected to the first receiving plate, and the tops of the first receiving plate and the second receiving plate are provided with limiting components for fixing the position of the muffler body.

[0008] As a further solution of the present invention: a through groove is provided on the side of the second docking plate for facilitating the rotational connection between the second docking plate and the first docking plate, the through groove is connected to the top and bottom of the second docking plate, a rotating shaft is rotatably connected in the through groove, and the first docking plate is fixedly connected to the side of the rotating shaft away from the second docking plate.

[0009] As a further solution of the present invention: the limit assembly includes a first limit block and a second limit block, the first limit block is fixedly connected to the top of the second supporting plate, the second limit block is movably connected to the top of the first supporting plate through a moving part that plays a horizontal movement role, and a soft pad is provided between the first limit block and the second limit block to reduce the friction between the first limit block and the second limit block and the muffler body.

[0010] As a further solution of the present invention: the moving component includes a slide groove arranged on the top of the first receiving plate, the slide groove is connected to the inner cavity of the first receiving plate, a screw rod is provided in the slide groove, a slider is sleeved on the screw rod, one end of the screw rod is rotatably connected to the limit plate arranged in the slide groove, and the other end of the screw rod is fixedly connected to the knob arranged on the outer wall of the first receiving plate, the knob is rotatably connected to the outer wall of the first receiving plate, and one end of the slider passes through the slide groove and is fixedly connected to the bottom of the second limit block.

[0011] As a further solution of the present invention: the reinforcement assembly includes two symmetrically arranged movable rods and two auxiliary rods, the ends of the two movable rods away from each other are rotatably connected to the inner wall of the installation groove, the bottoms of the two movable rods are respectively provided with clamping grooves for installing the auxiliary rods, one end of the auxiliary rod is rotatably connected to the clamping groove, and the other end of the auxiliary rod is provided with a suction cup to improve the reinforcement effect and prevent the base from moving.

[0012] As a further solution of the present invention: the size of the card slot matches the size of the auxiliary rod, a first magnetic sheet for fixing the auxiliary rod is provided inside the card slot, and a second magnetic sheet for use in conjunction with the first magnetic sheet is provided on the auxiliary rod.

[0013] As a further solution of the present invention: a battery electrically connected to the two telescopic rods is provided in the base, the battery is electrically connected to a switch arranged on the outer wall of the base, and a rubber pad is provided on the top of the base to prevent the muffler body from falling when moving.

[0014] As a further solution of the present invention: a sleeve is provided at the bottom of the first docking plate to increase the strength of the connection between the first docking plate and the telescopic rod, a protrusion is provided in the sleeve to prevent the first docking plate from shaking when connected to the telescopic rod, a connecting tube is provided at the top of the telescopic rod detachably connected to the first docking plate for use in conjunction with the sleeve, and a groove is provided on the outer wall of the connecting tube for use in conjunction with the protrusion in the sleeve to increase friction.

[0015] As a further solution of the present invention: the moving wheel is provided with a brake pad to prevent the moving wheel from rotating

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention is installed between the noise source equipment and the ventilation window. When the equipment radiation noise propagates toward the ventilation window, it is reflected by the sound insulation solid board of the present invention, which greatly reduces the noise level of the equipment radiation noise directly entering the external environment through the ventilation window. Since the wall surface of the soundproof cover is mostly sound-absorbing wall surface, the internal noise is mostly direct sound, so the present invention can play the role of a sound barrier.

[0018] 2. When in use, the present invention can be used to set up multiple stages of labyrinth muffler bodies in series to meet different noise reduction requirements. The noise entering the muffler body through the airflow has a portion of its sound energy absorbed by the sound-absorbing mixed cotton when passing through, thereby achieving the function of reducing radiated noise, and has strong practicality.

[0019] 3. When in use, the present invention is used in conjunction with the installation mechanism, which is convenient for single-person operation, reduces manpower consumption and costs, and when the installation mechanism is not in use, the first receiving plate can be turned upward to separate the first receiving plate from the telescopic rod. At the same time, the first receiving plate contacts the first limit block on the second receiving plate, so that the muffler body can be prevented from being above the base, making it convenient for the staff to move multiple muffler bodies for installation. The operation is simple, the use is convenient, and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The figure is a schematic diagram of the structure of a labyrinth muffler.

[0021] Figure 2 The figure is a front view of a labyrinth muffler.

[0022] Figure 3 This is a left view of a labyrinth muffler.

[0023] Figure 4 A top view of a labyrinth muffler.

[0024] Figure 5 The figure is a schematic diagram of the structure of the installation mechanism in a labyrinth muffler.

[0025] Figure 6 The figure is a schematic diagram of the structure of a reinforcement component in a labyrinth muffler.

[0026] Figure 7 The figure is a schematic diagram of the structure of a screw rod in a labyrinth muffler.

[0027] Figure 8 This is a structural diagram of the installation of the muffler body and the sound insulation cover.

[0028] Fig. 9 The figure is a schematic diagram of the structure of installing multiple muffler bodies and sound insulation covers.

[0029] In the figure: 1, sound insulation solid board; 2, sound-absorbing mixed cotton; 3, perforated protective panel; 4, bolt hole; 5, folded edge flange; 6, first limit block; 7, moving wheel; 8, mounting slot; 9, movable rod; 10, telescopic rod; 11, knob; 12, second limit block; 13, first receiving plate; 14, slide slot; 15, card slot; 16, auxiliary rod; 17, through slot; 18, rotating shaft; 19, suction cup; 20, battery; 21, slider; 22, screw rod; 23, limit plate; 24, base; 25, second receiving plate; 26, noise source equipment; 27, sound insulation cover; 28, ventilation window. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example 1

[0032] See also Figure 1-8 In the embodiment of the present invention: a labyrinth muffler comprises a muffler body for muffler a noise source device 26 and a mounting mechanism for mounting the muffler body, the muffler body comprises a sound insulation solid plate 1 and a perforated protective plate 3, the sound insulation solid plate 1 is a cavity structure with an opening at the top, and folded flanges 5 are arranged on both sides and the bottom of the sound insulation solid plate 1, and bolt holes 4 are arranged on the folded flanges 5 for facilitating the staff to install the muffler body at the ventilation window 28 on the sound insulation cover 27, and sound-absorbing mixed cotton 2 for muffler is arranged between the perforated protective plate 3 and the sound insulation solid plate 1, and the present invention is installed between the noise source device 26 and the ventilation window 28, and when the radiated noise of the device propagates in the direction of the ventilation window 28, it is reflected by the sound insulation solid plate 1 of the present invention, which greatly reduces the noise level of the radiated noise of the device directly entering the external environment through the ventilation window 28, and since the wall surface of the sound insulation cover 27 is mostly a sound-absorbing wall surface, the internal noise is mostly direct sound, so the present invention can play the role of a sound barrier.

[0033] The mounting mechanism includes a base 24, a moving wheel 7 for facilitating the movement of the base 24 is provided at the bottom of the base 24, a mounting groove 8 is provided on the side of the base 24, the mounting groove 8 is communicated with the inner cavity of the base 24, a reinforcement component for reinforcing the position of the base 24 is provided in the mounting groove 8, two telescopic rods 10 are symmetrically arranged along the central axis of the base 24 on the top of the base 24, a first receiving plate 13 and a second receiving plate 25 are provided above the two telescopic rods 10, the top of one of the telescopic rods 10 is fixedly connected to the bottom of the second receiving plate 25, and the other telescopic rod 10 is detachably connected to the first receiving plate 13, and the tops of the first receiving plate 13 and the second receiving plate 25 are provided with limiting components for fixing the position of the muffler body, which can be used in conjunction with the mounting mechanism to facilitate single-person operation and reduce manpower consumption and costs.

[0034] The side of the second receiving plate 25 is provided with a through groove 17 for facilitating the rotational connection between the second receiving plate 25 and the first receiving plate 13, the through groove 17 is communicated with the top and bottom of the second receiving plate 25, a rotating shaft 18 is rotatably connected in the through groove 17, the first receiving plate 13 is fixedly connected to the side of the rotating shaft 18 away from the second receiving plate 25, the limiting assembly includes a first limiting block 6 and a second limiting block 12, the first limiting block 6 is fixedly connected to the top of the second receiving plate 25, the second limiting block 12 is movably connected to the top of the first receiving plate 13 through a moving part that plays a role of horizontal movement, a soft pad is provided between the first limiting block 6 and the second limiting block 12 to reduce the friction between the first limiting block 6 and the second limiting block 12 and the muffler body, the moving part includes a slide groove 14 arranged at the top of the first receiving plate 13, the slide groove 14 is connected to the first receiving plate 13 The cavity is connected, and a screw rod 22 is provided in the slide groove 14, and a slider 21 is sleeved on the screw rod 22. One end of the screw rod 22 is rotatably connected to the limit plate 23 arranged in the slide groove 14, and the other end of the screw rod 22 is fixedly connected to the knob 11 arranged on the outer wall of the first receiving plate 13. The knob 11 is rotatably connected to the outer wall of the first receiving plate 13, and one end of the slider 21 passes through the slide groove 14 and is fixedly connected to the bottom of the second limit block 12. When in use, the muffler body is placed above the first receiving plate 13 and the second receiving plate 25, so that the side of the muffler body close to the first limit block 6 contacts the first limit block 6, and the knob 11 is rotated to make the second limit block 12 move toward the muffler body through the cooperation of the screw rod 22 and the slider 21 for fixing. The contact area between the muffler body and the ventilation window 28 is adjusted by controlling the telescopic rod 10 to be telescopic, so that the muffler body can be installed and fixed.

[0035] The reinforcement assembly includes two symmetrically arranged movable rods 9 and two auxiliary rods 16, the ends of the two movable rods 9 that are away from each other are rotatably connected to the inner cavity wall of the installation groove 8, and the bottoms of the two movable rods 9 are respectively provided with a clamping groove 15 for installing the auxiliary rod 16, one end of the auxiliary rod 16 is rotatably connected to the clamping groove 15, and the other end of the auxiliary rod 16 is provided with a suction cup 19 for improving the reinforcement effect and preventing the base 24 from moving. The size of the clamping groove 15 is consistent with the size of the auxiliary rod 16, a first magnetic suction piece for fixing the auxiliary rod 16 is provided inside the clamping groove 15, and a second magnetic suction piece used in conjunction with the first magnetic suction piece is provided on the auxiliary rod 16, and a brake pad for preventing the movable wheel 7 from rotating is provided on the moving wheel 7. When the base 24 is moved to the place where it is needed, the movable rod 9 can be rotated to make the movable rod 9 perpendicular to the installation groove 8, and then the auxiliary rod 16 in the clamping groove 15 at the bottom of the movable rod 9 is rotated to be perpendicular to the movable rod 9, so that the suction cup 19 at the bottom of the auxiliary rod 16 is in contact and fixed with the ground, preventing the installation mechanism from being displaced during use, thereby improving the stability of the structure.

[0036] A battery 20 electrically connected to the two telescopic rods 10 is provided in the base 24, and the battery 20 is electrically connected to a switch arranged on the outer wall of the base 24. A rubber pad is provided on the top of the base 24 to prevent the muffler body from falling when it moves. A sleeve is provided at the bottom of the first receiving plate 13 to improve the strength when the first receiving plate 13 is connected to the telescopic rod 10. A protrusion is provided in the sleeve to prevent the first receiving plate 13 from shaking when it is connected to the telescopic rod 10. A connecting cylinder used in conjunction with the sleeve is provided on the top of the telescopic rod 10 detachably connected to the first receiving plate 13. A groove is provided on the outer wall of the connecting cylinder to cooperate with the protrusion in the sleeve to improve friction. When the mounting mechanism is not in use, the first receiving plate 13 can be turned up to separate the first receiving plate 13 from the telescopic rod 10. At the same time, the first receiving plate 13 contacts the first limit block 6 on the second receiving plate 25, so that the muffler body can be placed above the base 24, which is convenient for the staff to move multiple muffler bodies for installation. The operation is simple, the use is convenient, and the practicability is strong.

[0037] Example 2

[0038] See also Fig. 9 In the embodiment of the present invention, the opening direction of the invention during installation can be adjusted according to the installation position of the noise source device 26 and the sound pressure levels of different areas in the soundproof cover 27. The opening directions include upward, downward, left and right, etc. The number and area of ​​the openings of the invention can also be determined according to the ventilation volume of the soundproof cover 27.

[0039] When in use, multiple stages of labyrinth silencer bodies can be arranged in series to meet different noise reduction requirements. The noise that enters the silencer body through the airflow will have part of its sound energy absorbed by the sound-absorbing mixed cotton when passing through, thereby achieving the function of reducing radiated noise, which is highly practical.

[0040] The working principle of the present invention is: when in use, the opening direction of the invention during installation is adjusted according to the installation position of the noise source device 26 and the sound pressure level of different areas in the soundproof cover 27. The opening directions include upward, downward, left and right, etc. The number and area of ​​the openings of the invention can also be determined according to the ventilation volume of the soundproof cover 27. When the muffler body is moved, the first receiving plate 13 can be turned up to separate the first receiving plate 13 from the telescopic rod 10. At the same time, the first receiving plate 13 contacts the first limit block 6 on the second receiving plate 25, and the muffler body can be placed above the base 24, which is convenient for the staff to move multiple muffler bodies for installation. When the base 24 is moved to the place where it needs to be used, the movable rod 9 can be rotated to make the movable rod 9 perpendicular to the installation groove 8, and then the auxiliary rod 16 in the card groove 15 at the bottom of the movable rod 9 is rotated to be perpendicular to the movable rod 9, so that the suction cup 19 at the bottom of the auxiliary rod 16 is in contact with the ground and fixed. , preventing the installation mechanism from being displaced during use, thereby improving the stability of the structure. During installation, the muffler body is placed above the first receiving plate 13 and the second receiving plate 25, so that the side of the muffler body close to the first limit block 6 contacts the first limit block 6, and the knob 11 is turned to move the second limit block 12 toward the muffler body for fixing through the cooperation of the screw rod 22 and the slider 21. By controlling the telescopic rod 10 to adjust the contact area between the muffler body and the ventilation window 28, the muffler body can be connected to the ventilation window on the soundproof cover by bolts. The muffler body is installed between the noise source device 26 and the ventilation window 28. When the radiated noise of the device propagates in the direction of the ventilation window 28, it is reflected by the sound insulation solid board 1 of the present invention, which greatly reduces the noise level of the radiated noise of the device directly entering the external environment through the ventilation window 28. Since the wall surface of the soundproof cover 27 is mostly a sound-absorbing wall surface, the internal noise is mostly direct sound, which can play the role of a sound barrier.

[0041] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0042] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A labyrinth muffler, comprising a muffler body for muffler a noise source device (26) and a mounting mechanism for mounting the muffler body, characterized in that: The muffler body comprises a sound insulation solid plate (1) and a perforated protective plate (3); the sound insulation solid plate (1) is a cavity structure with an opening at the top; folded flanges (5) are provided on both sides and the bottom of the sound insulation solid plate (1); the folded flanges (5) are provided with bolt holes (4) for workers to install the muffler body at the ventilation window (28) on the sound insulation cover (27); and sound-absorbing mixed cotton (2) having a sound-absorbing effect is provided between the perforated protective plate (3) and the sound insulation solid plate (1); The mounting mechanism comprises a base (24), the bottom of the base (24) is provided with a moving wheel (7) for facilitating the movement of the base (24), a mounting groove (8) is provided on the side of the base (24), the mounting groove (8) is communicated with the inner cavity of the base (24), a reinforcing component for reinforcing the position of the base (24) is provided in the mounting groove (8), two telescopic rods (10) are symmetrically arranged on the top of the base (24) along the central axis of the base (24), a first receiving plate (13) and a second receiving plate (25) are provided above the two telescopic rods (10), the top of one of the telescopic rods (10) is fixedly connected to the bottom of the second receiving plate (25), and the other telescopic rod (10) is detachably connected to the first receiving plate (13), and the tops of the first receiving plate (13) and the second receiving plate (25) are provided with a limiter component for fixing the position of the muffler body; A through groove (17) is provided on the side of the second receiving plate (25) for facilitating the rotational connection between the second receiving plate (25) and the first receiving plate (13); the through groove (17) is connected to the top and bottom of the second receiving plate (25); a rotating shaft (18) is rotatably connected in the through groove (17); and the first receiving plate (13) is fixedly connected to the rotating shaft (18) at a side away from the second receiving plate (25); The limiting assembly comprises a first limiting block (6) and a second limiting block (12); the first limiting block (6) is fixedly connected to the top of the second receiving plate (25); the second limiting block (12) is movably connected to the top of the first receiving plate (13) via a moving component that performs horizontal movement; and a soft pad is provided between the first limiting block (6) and the second limiting block (12) to reduce friction between the first limiting block (6), the second limiting block (12) and the muffler body.

2. A labyrinth muffler according to claim 1, characterized in that: The movable component comprises a slide groove (14) arranged at the top of the first receiving plate (13), the slide groove (14) being communicated with the inner cavity of the first receiving plate (13), a screw rod (22) being arranged in the slide groove (14), a slider (21) being sleeved on the screw rod (22), one end of the screw rod (22) being rotatably connected to a limit plate (23) arranged in the slide groove (14), the other end of the screw rod (22) being fixedly connected to a knob (11) arranged on the outer wall of the first receiving plate (13), the knob (11) being rotatably connected to the outer wall of the first receiving plate (13), and one end of the slider (21) passing through the slide groove (14) and being fixedly connected to the bottom of the second limit block (12).

3. A labyrinth muffler according to claim 1, characterized in that: The reinforcement assembly comprises two symmetrically arranged movable rods (9) and two auxiliary rods (16); the ends of the two movable rods (9) that are away from each other are rotatably connected to the inner cavity wall of the installation groove (8); the bottoms of the two movable rods (9) are respectively provided with a clamping groove (15) for mounting the auxiliary rod (16); one end of the auxiliary rod (16) is rotatably connected to the clamping groove (15); and the other end of the auxiliary rod (16) is provided with a suction cup (19) for improving the reinforcement effect and preventing the base (24) from moving.

4. A labyrinth muffler according to claim 3, characterized in that: The size of the card slot (15) matches the size of the auxiliary rod (16); a first magnetic attraction sheet for fixing the auxiliary rod (16) is provided inside the card slot (15); and a second magnetic attraction sheet for use in conjunction with the first magnetic attraction sheet is provided on the auxiliary rod (16).

5. A labyrinth muffler according to claim 1, characterized in that: A battery (20) electrically connected to the two telescopic rods (10) is arranged inside the base (24); the battery (20) is electrically connected to a switch arranged on the outer wall of the base (24); and a rubber pad is arranged on the top of the base (24) to prevent the muffler body from falling off when moving.

6. A labyrinth muffler according to claim 1, characterized in that: A sleeve is provided at the bottom of the first receiving plate (13) for increasing the strength of the connection between the first receiving plate (13) and the telescopic rod (10); a protrusion is provided inside the sleeve for preventing the first receiving plate (13) from shaking when connected to the telescopic rod (10); a connecting tube is provided at the top of the telescopic rod (10) detachably connected to the first receiving plate (13) for use in conjunction with the sleeve; a groove is provided on the outer wall of the connecting tube for use in conjunction with the protrusion inside the sleeve for increasing friction.

7. A labyrinth muffler according to any one of claims 1 to 6, characterized in that: The moving wheel (7) is provided with a brake pad for preventing the moving wheel (7) from rotating.

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