Silencing static pressure box

Abstract

The utility model discloses a silencing static pressure box which comprises a box body, an air inlet pipe communicated with the interior of the box body is arranged at the front end of the box body, and an air outlet pipe communicated with the interior of the box body is arranged at the top of the box body. The mounting part is connected with the air inlet pipe; and the silencing assembly is arranged in the box body, the silencing assembly comprises a metal net frame, the two sides of the metal net frame are each provided with a fixing piece matched with the corresponding installation part, and a first connecting rod is arranged at the front end of the metal net frame. Compared with the prior art, the silencing plenum chamber is convenient to disassemble and assemble, saves time and is convenient for a user to maintain.

Description

Technical Field

[0001] The utility model relates to the field of air supply system accessories, in particular to a noise-absorbing static pressure box. Background Art

[0002] The static pressure box is a necessary accessory for the air supply system to reduce dynamic pressure, increase static pressure, stabilize airflow and reduce airflow vibration. The static pressure box can improve the overall performance of the ventilation system in the ventilation system, but the air will cause noise when passing through the static pressure box. For equipment with higher silent requirements, it is necessary to perform noise reduction processing.

[0003] At present, the static pressure box is equipped with metal accessories for silencing, but the metal accessories need to be fixed to the inner wall. However, the air flow will cause a lot of dust to adhere to the surface of the metal accessories. Users are required to remove the metal accessories from the static pressure box for cleaning and maintenance during use. Users need to unscrew many screws during the disassembly process, which is very inconvenient, time-consuming and labor-intensive.

[0004] Therefore, based on the above problems, it is necessary to improve the existing static pressure box to solve the above problems. Utility Model Content

[0005] In view of the problems existing in the above-mentioned prior art, the utility model provides a sound-absorbing static pressure box, which is easy for users to disassemble and assemble, saves time, and is also convenient for users to maintain.

[0006] In order to solve the above technical problems, the technical solution of the utility model is:

[0007] A sound-absorbing static pressure box, comprising:

[0008] A box body, wherein the front end of the box body is provided with an air inlet pipe connected to the box body, and the top of the box body is provided with an air outlet pipe connected to the inside of the box body;

[0009] a mounting portion connected to the air inlet pipe;

[0010] A silencer assembly is arranged in the box body, and the silencer assembly includes a metal mesh frame, and a fixing piece matched with the mounting part is respectively arranged on both sides of the metal mesh frame, and a first connecting rod is arranged at the front end of the metal mesh frame.

[0011] Preferably, a third connecting rod is provided in the box body, a second connecting rod opposite to the first connecting rod is provided at the rear end of the metal mesh frame, and at least one fixing block connected to the third connecting rod is provided on the second connecting rod.

[0012] Preferably, a first sound absorbing layer and a second sound absorbing layer covering the first sound absorbing layer are provided in the box.

[0013] Preferably, the first sound-absorbing layer is made of rubber-plastic foam, and the second sound-absorbing layer is made of polyurethane sound-absorbing cotton.

[0014] Preferably, a holding device is provided on both sides of the air outlet pipe respectively, and the holding device includes two mounting blocks and a rotating shaft rotatable relative to the mounting blocks, and a holding portion is provided on the rotating shaft.

[0015] Preferably, at least one first connecting member and at least one second connecting member are respectively provided on both sides of the box body, a fixing hole is provided at the upper end and the lower end of the first connecting member, and one of the end faces of the first connecting member is open; an accommodating portion is provided in the second connecting member, and the accommodating portion is connected to the upper and lower portions of the second connecting member.

[0016] Preferably, the mounting portion is provided with a plurality of connection holes.

[0017] Preferably, the metal mesh frame includes four mutually perpendicular metal meshes.

[0018] Preferably, the inner side surface of the front end portion of the fixing member abuts against the end surface of the mounting portion, and the fixing member is L-shaped.

[0019] Preferably, the air inlet pipe and the mounting portion are integrally formed.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] The silencer static pressure box is easy to disassemble and assemble, saves time, and is convenient for users to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view of a noise-absorbing static pressure box of the present application.

[0023] Figure 2 It is a schematic diagram of the internal structure of a noise-absorbing static pressure box of the present application.

[0024] Figure 3 It is a structural schematic diagram of a silencer component in a silencer static pressure box of the present application.

[0025] Figure 4 This is a schematic structural diagram of a silencer assembly in a silencer static pressure box from another angle of the present application. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-4 , the specific implementation methods of the utility model are further described in detail to make the technical solution of the utility model easier to understand and grasp.

[0027] In this embodiment, it should be understood that the terms "middle", "upper", "lower", "top", "right side", "end", "front", "back", "middle", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, in this specific embodiment, if the connection or fixing method between components is not specifically described, the connection or fixing method can be through bolt fixing or pin fixing, or pin shaft connection and the like commonly used in the prior art, and therefore, it is not described in detail in this embodiment.

[0029] The following is combined with Figure 1-4 This application is described in further detail.

[0030] like Figure 1 As shown, a sound-absorbing static pressure box comprises:

[0031] A box body 1 is provided with an air inlet duct 12 connected to the box body 1 at the front end thereof, an air outlet duct 13 connected to the inside of the box body 1 is provided at the top of the box body 1, and a holding device 3 is provided on both sides of the air outlet duct 13. The holding device 3 includes two mounting blocks 31 and a rotating shaft 32 which can rotate relative to the mounting blocks 31, and a holding portion is provided on the rotating shaft 32. By providing the holding device 3, the user can lift and move the box body 1 conveniently by holding the holding portion, and in combination with the rotating shaft 32, the user can lift and move the box body 1 at an angle which suits his comfort.

[0032] A mounting portion 11 is connected to the air inlet pipe 12. The mounting portion 11 is provided with a plurality of connecting holes 111. In the present embodiment, the mounting portion 11 is a flange, and the air inlet pipe 12 and the mounting portion 11 are integrally formed to avoid gaps at the assembly position of the mounting portion 11 and the air inlet pipe 12, thereby reducing air leakage and preventing noise from being transmitted between the mounting portion 11 and the air inlet pipe 12, thereby further improving the silencing effect.

[0033] like Figure 2-Figure 4 As shown, a silencer assembly 2 is arranged in the box body 1, and the silencer assembly 2 includes a metal mesh frame 21. A fixing piece 22 matching the mounting portion 11 is respectively provided on both sides of the metal mesh frame 21. The inner side surface of the front end of the fixing piece 22 is abutted against the end surface of the mounting portion 11. A first connecting rod 23 is provided at the front end of the metal mesh frame 21. The first connecting rod 23 is convenient for the user to pull the metal mesh frame 21 out of the box body 1. In the present embodiment, the metal mesh frame 21 includes four mutually perpendicular metal meshes; the fixing piece 22 is L-shaped, and by being set into an L-shape, the fixing piece 22 is more closely fitted to the mounting portion 11, thereby achieving a better fixing effect.

[0034] A third connecting rod 14 is provided in the box body 1, and a second connecting rod 24 opposite to the first connecting rod 23 is provided at the rear end of the metal mesh frame 21, and at least one fixed block 25 connected to the third connecting rod 14 is provided on the second connecting rod 24. In the present embodiment, the fixing block 25 is provided with one, and the fixing block 25 is clamped on the third connecting rod 14 to ensure the stability of the metal mesh frame 21, and the fixing block 25 is concavely arranged to better cooperate with the third connecting rod 14; in other embodiments, more than two fixing blocks 25 may be provided, and more than two fixing blocks 25 can better stabilize the metal mesh frame 21 in the box body 1.

[0035] Compared with the prior art, the silencer assembly 2 eliminates the complicated operation of screwing a plurality of screws. While ensuring the stable connection of the silencer assembly 2, it is also convenient for the user to disassemble the silencer assembly 2 and clean and maintain the metal mesh frame 21.

[0036] like Figure 4 As shown, in order to further improve the sound-absorbing effect, a first sound-absorbing layer 15 and a second sound-absorbing layer 16 covering the first sound-absorbing layer 15 are provided in the box body 1. In this embodiment, the first sound-absorbing layer 15 is rubber-plastic foam, and the second sound-absorbing layer 16 is polyurethane sound-absorbing cotton. When the box body 1 is ventilated, the friction noise generated by the air and the inside of the box body 1 is first absorbed by the second sound-absorbing layer 16 and then blocked by the first sound-absorbing layer 15, so as to achieve the function of enhancing noise reduction. Of course, in order to further improve the sound-absorbing effect, the first sound-absorbing layer 15 and the second sound-absorbing layer 16 can also be provided on the inner walls of the air inlet pipe 12 and the air outlet pipe 13, which will not be described in detail here.

[0037] like Figure 1 and Figure 4 As shown, at least one first connecting member 4 and at least one second connecting member 5 are respectively provided on both sides of the box body 1, and a fixing hole 41 is provided at the upper end and the lower end of the first connecting member 4, and one end face of the first connecting member 4 is opened; an accommodating portion 51 is provided in the second connecting member 5, and the accommodating portion 51 is connected to the upper and lower parts of the second connecting member 5. By providing the first connecting member 4 and the second connecting member 5, a plurality of silencer static pressure boxes can be connected together, that is, if two silencer static pressure boxes are needed to work, the user can insert the second connecting member 5 of one of the silencer static pressure boxes into the first connecting member 4 of the other silencer static pressure box, and then fix the two silencer static pressure boxes by means of bolts or pins, etc., and it is also convenient to limit the silencer static pressure box during transportation to prevent surface damage.

[0038] The technical effects of this utility model are mainly reflected in the following aspects:

[0039] The silencer static pressure box is easy to disassemble and assemble, saves time, and is convenient for users to maintain.

[0040] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A silencing static pressure box, characterized in that: include: A box body (1), wherein the front end of the box body (1) is provided with an air inlet pipe (12) connected to the inside of the box body (1), and the top of the box body (1) is provided with an air outlet pipe (13) connected to the inside of the box body (1); A mounting portion (11) connected to the air inlet pipe (12); A silencer assembly (2) is arranged in the box body (1), the silencer assembly (2) comprises a metal mesh frame (21), both sides of the metal mesh frame (21) are respectively provided with a fixing member (22) matching with the mounting portion (11), and the front end of the metal mesh frame (21) is provided with a first connecting rod (23).

2. The silencing static pressure box according to claim 1, characterized in that: A third connecting rod (14) is provided in the box body (1), a second connecting rod (24) opposite to the first connecting rod (23) is provided at the rear end of the metal mesh frame (21), and at least one fixing block (25) connected to the third connecting rod (14) is provided on the second connecting rod (24).

3. The silencing static pressure box according to claim 1, characterized in that: A first sound absorbing layer (15) and a second sound absorbing layer (16) covering the first sound absorbing layer (15) are provided in the box body (1).

4. The silencing static pressure box according to claim 3, characterized in that: The first sound-absorbing layer (15) is made of rubber-plastic foam, and the second sound-absorbing layer (16) is made of polyurethane sound-absorbing cotton.

5. The silencing static pressure box according to claim 1, characterized in that: A holding device (3) is provided on both sides of the air outlet pipe (13), and the holding device (3) comprises two mounting blocks (31) and a rotating shaft (32) that can rotate relative to the mounting blocks (31), and a holding portion (33) is provided on the rotating shaft (32).

6. The silencing static pressure box according to claim 1, characterized in that: At least one first connecting member (4) and at least one second connecting member (5) are respectively provided on both sides of the box body (1); a fixing hole (41) is provided at the upper end and the lower end of the first connecting member (4), and one end surface of the first connecting member (4) is open; a receiving portion (51) is provided in the second connecting member (5), and the receiving portion (51) is connected to the upper portion and the lower portion of the second connecting member (5).

7. The silencing static pressure box according to claim 1, characterized in that: The mounting portion (11) is provided with a plurality of connection holes (111).

8. The silencing static pressure box according to claim 1, characterized in that: The metal mesh frame (21) comprises four metal meshes which are perpendicular to each other.

9. The silencing static pressure box according to claim 1, characterized in that: The inner side surface of the front end portion of the fixing member (22) abuts against the end surface of the mounting portion (11), and the fixing member (22) is L-shaped.

10. The silencing static pressure box according to claim 1, characterized in that: The air inlet pipe (12) and the mounting portion (11) are integrally formed.

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