Sheet type silencer for ventilation system

Abstract

The utility model belongs to the field of silencing of a ventilation system, particularly relates to a sheet type silencer for a ventilation system, and aims to solve the problems that although silencing sheets can be used for silencing during use, in seasons with many mosquitoes, the mosquitoes cannot be intercepted, the mosquitoes easily enter a ventilated environment through an air port of a shell, and the ventilation effect is poor. In order to solve the problems that in the prior art, an air inlet pipe is welded to one side of the shell and communicated with the shell, and an air outlet pipe used for air outlet is welded to the other side of the shell, and an air outlet pipe is welded to the other side of the shell and communicated with the air inlet pipe; one end of the air inlet pipe and one end of the air outlet pipe are each provided with a plurality of mounting holes facilitating connection of an external pipeline, a plurality of silencing pieces used for silencing are fixedly arranged on the inner wall of the shell, each silencing piece is composed of a shell body and a porous solid material, mosquitoes can be effectively intercepted through the intercepting mechanism, and therefore the effect of silencing is achieved. And the silencer is prevented from entering the interior (in a ventilation environment), and the whole silencer can be hoisted through the hoisting mechanism.

Description

Technical Field

[0001] This utility model relates to the field of noise reduction technology for ventilation systems, and in particular to a plate-type silencer for ventilation systems. Background Technology

[0002] Ventilation systems all suffer from noise transmission issues in the ducts. The current solution is to install silencers on the ventilation ducts to reduce noise.

[0003] A search revealed that patent CN217506889U discloses a plate-type silencer, but this silencer has the following shortcomings in use:

[0004] Although noise reduction can be achieved through sound-absorbing plates during use, they cannot be used to block mosquitoes during seasons when mosquitoes are plentiful. Mosquitoes can easily enter the ventilated environment through the air vents on the outer shell. Additionally, they are inconvenient to hoist when necessary. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, which, while sound-absorbing plates can reduce noise during use, cannot effectively block mosquitoes, allowing them to easily enter the ventilated environment through the vents in the outer casing. Furthermore, they are inconvenient to install when required. Therefore, this invention proposes a plate-type silencer for ventilation systems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A plate-type silencer for a ventilation system includes a housing, an air inlet pipe welded to one side of the housing and connected thereto, and an air outlet pipe welded to the other side of the housing. Both the air inlet pipe and the air outlet pipe have multiple mounting holes for connecting to external pipes. Multiple sound-absorbing plates for sound absorption are fixedly installed on the inner wall of the housing. Each sound-absorbing plate is composed of a shell and a porous solid material, with the porous solid material filling the shell. Multiple flow holes are provided on the shell.

[0008] The interception mechanism is installed on the air outlet duct to intercept mosquitoes;

[0009] The hoisting mechanism is installed on the outer shell to facilitate the hoisting of the outer shell.

[0010] In one possible design, the interception mechanism includes an interception net for intercepting mosquitoes and a handle for moving the interception net. An insertion slot is provided on one side of the air outlet pipe, and the interception net is inserted into the insertion slot. One side of the handle is fixedly connected to one side of the interception net.

[0011] In a possible design, the hoisting mechanism comprises a connecting frame, a mounting plate, a fixing plate, a bidirectional screw rod and two plug-in plates, the connecting frame is in an inverted U shape, the bottom of the mounting plate is welded to the top of the connecting frame, the mounting plate is provided with plug-in holes at four corners, the top of the fixing plate is welded to the inner wall of the top of the connecting frame, the fixing plate is embedded with bearings on one side and two sides of the connecting frame, the outer side of the bidirectional screw rod is fixedly connected to the inner ring inner wall of the three bearings, the top of the two plug-in plates is slidably connected to the inner wall of the top of the connecting frame, the plug-in plate is in an L shape, the top of the shell is provided with an inverted T-shaped insertion slot, one end of the two plug-in plates is inserted into the insertion slot, the plug-in plate is embedded with a screw nut on one side and is threadedly connected to the bidirectional screw rod, and the two ends of the bidirectional screw rod are fixedly provided with second knobs facilitating rotation of the bidirectional screw rod.

[0012] In a possible design, two stable rods for improving stability of the plug-in plate are fixedly arranged on the inner wall of one side of the connecting frame, one end of each of the two stable rods is fixedly connected to the inner wall of one side of the connecting frame, two round holes are arranged on the fixing plate, and the two stable rods are arranged in the two round holes, respectively, two moving holes are arranged on the plug-in plate, and the plug-in plate is slidably connected to the stable rods through the moving holes.

[0013] In a possible design, a threaded rod for fixing the interception net is threadedly connected to the air outlet pipe, and a first knob facilitating rotation of the threaded rod is fixedly arranged at the bottom end of the threaded rod.

[0014] In a possible design, a sliding groove for reducing friction caused by movement of the plug-in plate is arranged in the inner wall of the top of the connecting frame, and a sliding block is fixedly arranged at the top of the plug-in plate and slidably connected to the inner wall of the sliding groove.

[0015] In a possible design, the porous solid material is aerogel.

[0016] In the application, when the interception net is installed, the interception net is inserted into the insertion slot, the first knob is rotated, the rotation of the first knob drives the rotation of the first threaded rod, the top end of the first threaded rod is tightly attached to one side of the interception net, so that the interception net can be fixed, the material of the interception net can be selected from high-density stainless steel mesh, HEPA filter screen and the like, and the specific material can be selected according to actual needs, when the silencer is hoisted as a whole, the insertion slot at the top of the shell is aligned with the two insertion plates on the connecting frame, the second knob of the rotating bidirectional screw rod is rotated, the two insertion plates slide along the top inner wall of the connecting frame and are inserted into the insertion slot of the shell, so that the shell is fixed, the stable rod provides additional stability during the movement of the insertion plate, then the connecting frame is fixed through the insertion hole in the mounting plate and the ceiling or other hoisting structure (the expansion bolts can pass through the insertion hole and be connected with external mounting holes), of course, the mounting plate can be installed at the position to be used first, the shell is installed on the two insertion plates, and then the shell is used, air enters the shell through the air inlet pipe, the air contacts the multiple sound-absorbing sheets when passing through the shell, the sound-absorbing sheets are composed of a shell and a porous solid material, the porous solid material is aerogel, has excellent sound absorption performance and effectively reduces the propagation of noise (aerogel refers to a kind of nano-porous solid material formed by replacing the liquid phase in the gel with a certain drying method through the sol-gel method, the inside of the aerogel is filled with nano-pores which are open at both ends and are the same as the surface, when sound propagates in the aerogel, sound energy will be consumed by the large number of pores, so that the aerogel has a sound absorption effect which is tens of times higher than that of ordinary porous materials, has good sound absorption performance and stable acoustic performance, and will not pollute the ventilation duct by dropping debris), and the material of the shell can be selected from foamed aluminum material, the foamed aluminum has high porosity (60% to 90%), there is almost no plane that can reflect sound waves on the surface of the foamed aluminum, when sound waves act on the surface of the foamed aluminum, the sound waves produce diffuse reflection, thereby playing a sound-absorbing role, in addition, the air in the pore channel of the foamed aluminum will be compressed and expanded under the action of sound waves, thereby converting sound energy into heat energy, so as to attenuate noise, the specific material of the shell can be selected according to actual needs, the sound-absorbed air is discharged through the air outlet pipe, thereby realizing the dual effects of ventilation and noise reduction, the interception net can effectively intercept mosquitoes and insects and prevent them from entering the inside (ventilation environment), when hoisting is not needed, the bidirectional screw rod is reversed, the insertion plates are separated from the insertion slot, and the hoisting mechanism can be disassembled, of course, the interception net can also be arranged on the air inlet pipe or both the air inlet pipe and the air outlet pipe are provided with the interception net.

[0017] The utility model discloses a beneficial effect is:

[0018] In the utility model, the interception mechanism, the interception net can effectively intercept mosquitoes and insects and prevent them from entering the inside (ventilation environment);

[0019] The utility model discloses a sheet silencer for ventilation system, through hoisting mechanism, when the whole silencer hoists, the slot of shell top is aligned with two insert plates on connecting frame, and through the second knob of rotating bidirectional screw rod, makes two insert plates along the top inner wall of connecting frame and inserts into the slot of shell, to fix shell, in the insert plate movement, the additional stability that steady pole provides, then connecting frame passes through the jack on mounting plate and is fixed with the ceiling or other hoisting structure (can pass through expansion bolt and is connected in with external mounting hole through the jack), can the whole silencer hoists accordingly.

[0020] The utility model discloses a sheet silencer for ventilation system, through hoisting mechanism, when the whole silencer hoists, the slot of shell top is aligned with two insert plates on connecting frame, and through the second knob of rotating bidirectional screw rod, makes two insert plates along the top inner wall of connecting frame and inserts into the slot of shell, to fix shell, in the insert plate movement, the additional stability that steady pole provides, then connecting frame passes through the jack on mounting plate and is fixed with the ceiling or other hoisting structure (can pass through expansion bolt and is connected in with external mounting hole through the jack), can the whole silencer hoists accordingly. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 For the sheet silencer for ventilation system of utility model discloses the main view structure schematic diagram of the utility model discloses a sheet silencer for ventilation system, connecting frame, mounting plate, intercepting net, handle, threaded rod, first knob, steady pole, fixed plate, slot, bidirectional screw rod, insert plate, shell, porous solid material.

[0022] Figure 2 For the sheet silencer for ventilation system of utility model discloses the side view structure schematic diagram of the utility model discloses a sheet silencer for ventilation system, connecting frame, mounting plate, intercepting net, handle, threaded rod, first knob, steady pole, fixed plate, slot, bidirectional screw rod, insert plate, shell, porous solid material.

[0023] Figure 3 For the sheet silencer for ventilation system of utility model discloses the hoisting mechanism and shell separation structure schematic diagram of the utility model discloses a sheet silencer for ventilation system, connecting frame, mounting plate, intercepting net, handle, threaded rod, first knob, steady pole, fixed plate, slot, bidirectional screw rod, insert plate, shell, porous solid material.

[0024] Figure 4 For the sheet silencer for ventilation system of utility model discloses the shell and shell body section structure schematic diagram of the utility model discloses a sheet silencer for ventilation system, connecting frame, mounting plate, intercepting net, handle, threaded rod, first knob, steady pole, fixed plate, slot, bidirectional screw rod, insert plate, shell, porous solid material.

[0025] Fig. 1, shell, 2, air inlet pipe, 3, connecting frame, 4, mounting plate, 5, air outlet pipe, 6, intercepting net, 7, handle, 8, threaded rod, 9, first knob, 10, steady pole, 11, fixed plate, 12, slot, 13, bidirectional screw rod, 14, insert plate, 15, shell, 16, porous solid material. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0027] Embodiment one

[0028] Reference Figures 1-4The patch silencer comprises a shell 1 made of a solid and durable metal material. An air inlet pipe 2 is welded on one side of the shell 1, and the air inlet pipe 2 is connected with the inside of the shell 1. A plurality of mounting holes are formed on one end of the air inlet pipe 2, facilitating the connection with external ventilation pipes. An air outlet pipe 5 is welded on the other side of the shell 1, and the air outlet pipe 5 is also provided with a plurality of mounting holes for connection with external pipes. A plurality of sound-absorbing sheets are fixedly arranged on the inner wall of the shell 1. Each sound-absorbing sheet is composed of a shell 15 and a porous solid material 16. The shell 15 is made of a light metal material and has good strength and rigidity. A plurality of flow holes are formed on the shell 15 to allow air to pass through. The porous solid material 16 is filled in the shell 15, and the material is aerogel. The aerogel has excellent sound absorption performance and can effectively absorb and reduce noise.

[0029] An intercepting mechanism is arranged on the air outlet pipe 5 for intercepting mosquitoes. The intercepting mechanism comprises an intercepting net 6 and a handle 7. The intercepting net 6 is made of a fine metal mesh or a plastic mesh, which can effectively block insects such as mosquitoes from entering. The handle 7 is fixedly connected to one side of the intercepting net 6, facilitating the user to pull the intercepting net 6 for cleaning or replacement. An insertion slot is formed on one side of the air outlet pipe 5, and the intercepting net 6 is inserted into the insertion slot. Meanwhile, a threaded rod 8 is threadedly connected to the air outlet pipe 5, and a first knob 9 is arranged at the bottom end of the threaded rod 8. By rotating the first knob 9, the height of the threaded rod 8 can be adjusted to fix the intercepting net 6.

[0030] A hoisting mechanism is arranged on the shell 1 to facilitate hoisting of the shell 1. The hoisting mechanism comprises a connecting frame 3, a mounting plate 4, a fixed plate 11, a bidirectional screw rod 13 and two plug-in plates 14. The connecting frame 3 is inverted U-shaped, and the bottom of the mounting plate 4 is welded to the top of the connecting frame 3. Plug-in holes are formed at the four corners of the mounting plate 4 to facilitate connection with hoisting equipment or structure. The top of the fixed plate 11 is welded to the inner wall of the top of the connecting frame 3. Bearings are embedded in one side of the fixed plate 11 and two sides of the connecting frame 3, and the outer side of the bidirectional screw rod 13 is fixedly connected to the inner ring inner wall of the three bearings. The top of each of the two plug-in plates 14 is slidably connected to the top inner wall of the connecting frame 3. The plug-in plate 14 is L-shaped, and one end thereof is inserted into a plug-in slot 12 at the top of the shell 1. The plug-in slot 12 is inverted T-shaped, ensuring that the plug-in plate 14 can be firmly inserted into the plug-in slot 12. A screw rod nut is embedded in one side of the plug-in plate 14 and is threadedly connected to the bidirectional screw rod 13. By rotating the second knobs arranged at the two ends of the bidirectional screw rod 13, the two plug-in plates 14 can be driven to move into or out of the plug-in slot 12 simultaneously, thereby realizing hoisting or dismounting of the shell 1.

[0031] The present application is used in the field of ventilation system silencing, and can also be used in other fields applicable to the present application.

[0032] Embodiment two

[0033] Reference Figures 1-4On the basis of embodiment one, improve: the sheet silencer for ventilation system, it is used in ventilation system silencing field,

[0034] Two steady rods 10 are fixedly arranged in the inner wall of one side of the connecting frame 3, so that the stability of the plug-in plate 14 during movement is improved. One end of the steady rod 10 is fixedly connected with the inner wall of one side of the connecting frame 3, the other end penetrates through the round hole on the fixed plate 11, and is slidably connected with the moving hole on the plug-in plate 14.

[0035] A sliding groove is formed in the top inner wall of the connecting frame 3, and a sliding block is fixedly arranged on the top of the plug-in plate 14 and slidably connected with the inner wall of the sliding groove. In this way, the friction generated during movement of the plug-in plate 14 can be further reduced, and the stability and durability of the hoisting mechanism are improved.

[0036] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A plate-type silencer for a ventilation system, characterized in that, Includes an outer shell (1), one side of which is welded with an air inlet pipe (2) and connected to it, and the other side of which is welded with an air outlet pipe (5) for air outlet. One end of the air inlet pipe (2) and one end of the air outlet pipe (5) are provided with multiple mounting holes for easy connection to external pipes. Multiple sound-absorbing plates for noise reduction are fixedly provided on the inner wall of the outer shell (1). The sound-absorbing plates are composed of a shell (15) and a porous solid material (16). The porous solid material (16) is filled in the shell (15). Multiple flow holes are provided on the shell (15). The interception mechanism is installed on the air outlet pipe (5) to intercept mosquitoes; The hoisting mechanism is installed on the outer shell (1) to facilitate the hoisting of the outer shell (1).

2. The plate-type silencer for a ventilation system according to claim 1, characterized in that, The interception mechanism includes an interception net (6) for intercepting mosquitoes and a handle (7) for moving the interception net (6). An insertion slot is provided on one side of the air outlet pipe (5), and the interception net (6) is inserted into the insertion slot. One side of the handle (7) is fixedly connected to one side of the interception net (6).

3. The plate-type silencer for a ventilation system according to claim 1, characterized in that, The hoisting mechanism includes a connecting frame (3), a mounting plate (4), a fixing plate (11), a bidirectional lead screw (13), and two insert plates (14). The connecting frame (3) is inverted U-shaped. The bottom of the mounting plate (4) is welded to the top of the connecting frame (3). Insertion holes are provided at all four corners of the mounting plate (4). The top of the fixing plate (11) is welded to the inner top wall of the connecting frame (3). Bearings are embedded in one side of the fixing plate (11) and both sides of the connecting frame (3). The outer side of the bidirectional lead screw (13) is connected to three shafts. The inner ring of the bearing is fixedly connected, and the top of the two insert plates (14) is slidably connected to the top inner wall of the connecting frame (3). The insert plate (14) is L-shaped, and the top of the outer shell (1) is provided with a slot (12). The slot (12) is inverted T-shaped. One end of the two insert plates (14) is inserted into the slot (12). A screw nut is embedded in one side of the insert plate (14) and threadedly connected to the bidirectional screw (13). Both ends of the bidirectional screw (13) are fixedly provided with a second knob to facilitate the rotation of the bidirectional screw (13).

4. The plate silencer for a ventilation system according to claim 3, characterized in that, Two stabilizing rods (10) for improving the stability of the insert plate (14) are fixedly provided on one side inner wall of the connecting frame (3). One end of each of the two stabilizing rods (10) is fixedly connected to one side inner wall of the connecting frame (3). Two round holes are opened on the fixing plate (11), and the two stabilizing rods (10) are respectively located in the two round holes. Two moving holes are opened on the insert plate (14), and the insert plate (14) is slidably connected to the stabilizing rods (10) through the moving holes.

5. The plate-type silencer for a ventilation system according to claim 2, characterized in that, The air outlet pipe (5) is threaded with a threaded rod (8) for fixing the interception net (6), and a first knob (9) is fixedly provided at the bottom end of the threaded rod (8) to facilitate the rotation of the threaded rod (8).

6. The plate silencer for a ventilation system according to claim 3, characterized in that, The top inner wall of the connecting frame (3) is provided with a sliding groove to reduce the friction generated by the movement of the insert plate (14). The top of the insert plate (14) is fixedly provided with a slider, and the sliding top is slidably connected to the inner wall of the sliding groove.

7. The plate silencer for a ventilation system according to claim 1, characterized in that, The porous solid material (16) is made of aerogel.

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