Impedance type silencing static pressure box

Abstract

The utility model relates to the technical field of plenum chamber equipment, and discloses an impedance type silencing plenum chamber which comprises a plenum chamber body, an air inlet is fixedly formed in one side of the plenum chamber body, a first ventilation pipe is fixedly arranged on the front end face of the air inlet, and a first connecting flange is fixedly arranged on the front end face of the first ventilation pipe. And a plurality of first bolt holes are fixedly formed in four sides of the first connecting flange. According to the impedance type silencing plenum chamber, the sound insulation plate is arranged in the inner wall of the silencing plenum chamber, the sound absorption cotton is arranged on the inner wall of the sound insulation plate, most noise in the plenum chamber can be absorbed through the arrangement of the sound absorption cotton, and after most noise in the plenum chamber is absorbed, the noise in the plenum chamber can be effectively eliminated. And the sound insulation plate at the rear end of the sound absorption cotton is used for sound insulation, residual noise can be isolated, and the noise is prevented from flowing to the outside, so that the sound insulation effect of the static pressure box is greatly improved, and the practicability of the equipment is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of static pressure box equipment, in particular to an impedance type silencing static pressure box. Background Art

[0002] In building spaces, static pressure boxes are often used at the outlets of mechanical air supply and exhaust systems to achieve conversion and connection of air supply equipment and air ducts of different calibers and reduce noise. However, static pressure boxes in the prior art are prone to abnormal noise when the air supply and exhaust system is running, and the running resistance is large, which affects the silencing effect and increases the running cost. Therefore, those skilled in the art provide an impedance silencing static pressure box to solve the problems raised in the above background technology. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings existing in the prior art, and to propose an impedance type silencing static pressure box, the impedance type silencing static pressure box is provided with a sound insulation board inside the inner wall of the silencing static pressure box, and sound-absorbing cotton is provided on the inner wall of the sound insulation board. Most of the noise inside the static pressure box can be absorbed by the setting of the sound-absorbing cotton, and after most of the noise inside the static pressure box is absorbed, the sound insulation board at the rear end of the sound-absorbing cotton is used for sound insulation, and the residual noise can be isolated to prevent the noise from leaking to the outside, thereby greatly improving the sound insulation effect of the static pressure box and greatly improving the practicability of the equipment.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an impedance-type silencer static pressure box, comprising a static pressure box, an air inlet is fixedly opened on one side of the static pressure box, a first ventilation duct is fixedly provided on the front end surface of the air inlet, a first connecting flange is fixedly provided on the front end surface of the first ventilation duct, and a plurality of first bolt holes are fixedly provided on the four sides of the first connecting flange.

[0005] Furthermore, a 100-ohm air outlet is fixedly provided on one side of the static pressure box away from the air inlet, a second ventilation pipe is fixedly provided on the front end surface of the air outlet, a second connecting flange is fixedly provided on the front end surface of the second ventilation pipe, and a plurality of second bolt holes are fixedly provided on four sides of the second connecting flange;

[0006] Through the above technical solution, the static pressure box and the air duct can be conveniently connected through the connection of multiple second bolt holes.

[0007] Furthermore, a sound insulation board is fixedly provided on the inner wall of the static pressure box, and sound-absorbing cotton is fixedly provided on the inner wall of the sound insulation board;

[0008] Through the above technical solution, the sound-absorbing cotton can absorb the noise inside the static pressure box.

[0009] Further, a first guide vane is fixedly arranged inside the static pressure box, a second guide vane is fixedly arranged on one side of the first guide vane, and a third guide vane is fixedly arranged on one side of the second guide vane;

[0010] Through the above technical solution, the third guide vane can guide the wind flow in the air duct.

[0011] Furthermore, a plurality of air guide vanes are fixedly arranged inside the second ventilation duct;

[0012] Through the above technical solution, the setting of the air guide plate can increase the wind speed and facilitate the circulation of air volume.

[0013] Furthermore, a wind speed detector is fixedly installed on the top of the interior of the second ventilation pipe;

[0014] Through the above technical solution, the wind speed detector can detect the flow rate of wind in the air duct.

[0015] Furthermore, first rubber sealing pads are fixedly provided on four sides of the first connecting flange;

[0016] Through the above technical solution, the first rubber sealing pad can improve the sealing performance of the equipment connection.

[0017] Furthermore, second rubber sealing pads are fixedly provided on four sides of the second connecting flange;

[0018] Through the above technical solution, the second rubber sealing pad can improve the sealing performance of the equipment connection.

[0019] The utility model has the following beneficial effects:

[0020] 1. The utility model proposes an impedance type anechoic plenum box, in which a sound insulation board is arranged inside the inner wall of the anechoic plenum box, and sound-absorbing cotton is arranged on the inner wall of the sound insulation board. Most of the noise inside the plenum box can be absorbed by the sound-absorbing cotton, and after most of the noise inside the plenum box is absorbed, the sound insulation board at the rear end of the sound-absorbing cotton is used for sound insulation, so that the residual noise can be isolated to prevent the noise from leaking to the outside, thereby greatly improving the sound insulation effect of the plenum box and greatly improving the practicability of the equipment.

[0021] 2. The utility model proposes an impedance type silencer static pressure box, which is provided with a first rubber sealing gasket on the four sides of the first connecting flange and a second rubber sealing gasket on the four sides of the second connecting flange, and is connected to the air duct through the flange. The first rubber sealing gasket and the second rubber sealing gasket at the connection can greatly improve the sealing performance of the equipment, thereby achieving a better ventilation effect.

[0022] 3. The utility model proposes an impedance type silencer static pressure box, which has a first guide vane, a second guide vane and a third guide vane arranged inside the static pressure box. The setting of the guide vanes can increase the wind speed of the ventilation duct, making it more efficient and better, thereby greatly improving the practicability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is an isometric view of an impedance-type silencing static pressure box proposed by the utility model;

[0024] Figure 2 This is a front view of an impedance type silencing static pressure box proposed by the utility model;

[0025] Figure 3 A cross-sectional view of an impedance-type silencing static pressure box proposed by the utility model;

[0026] Figure 4 The utility model is a top view of an impedance-type silencing static pressure box.

[0027] Legend:

[0028] 1. Static pressure box; 2. Air inlet; 3. First ventilation duct; 4. First connecting flange; 5. First bolt hole; 6. First rubber sealing pad; 7. Air outlet; 8. Second ventilation duct; 9. Second connecting flange; 10. Second bolt hole; 11. Second rubber sealing pad; 12. Sound insulation board; 13. Sound-absorbing cotton; 14. First guide vane; 15. Second guide vane; 16. Third guide vane; 17. Wind speed detector; 18. Wind guide piece. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. In the description of this application, it should be noted that the terms used here are only for describing specific implementations, and are not intended to limit the exemplary implementations according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but in appropriate cases, the techniques, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0030] Reference Figure 1-4 The utility model provides an embodiment: an impedance type silencer static pressure box, comprising a static pressure box 1, an air inlet 2 is fixedly opened on one side of the static pressure box 1, a first ventilation pipe 3 is fixedly arranged on the front end surface of the air inlet 2, a first connecting flange 4 is fixedly arranged on the front end surface of the first ventilation pipe 3, and a plurality of first bolt holes 5 are fixedly arranged on the four sides of the first connecting flange 4.

[0031] An air outlet 7 is fixedly provided on one side of the static pressure box 1 away from the air inlet 2, a second ventilation duct 8 is fixedly provided on the front end surface of the air outlet 7, a second connecting flange 9 is fixedly provided on the front end surface of the second ventilation duct 8, a plurality of second bolt holes 10 are fixedly provided on the four sides of the second connecting flange 9, and the static pressure box 1 can be conveniently connected to the air duct through the connection of the plurality of second bolt holes 10, a sound insulation board 12 is fixedly provided on the inner wall of the static pressure box 1, a sound absorbing cotton 13 is fixedly provided on the inner wall of the sound insulation board 12, and the sound absorbing cotton 13 can absorb the noise inside the static pressure box 1, a first guide vane 14 is fixedly provided inside the static pressure box 1, a second guide vane 15 is fixedly provided on one side of the first guide vane 14, and a second A third guide vane 16 is fixedly provided on one side of the guide vane 15, and the third guide vane 16 can guide the wind flow in the air duct. A plurality of air guide plates 18 are fixedly provided inside the second ventilation duct 8, and the setting of the air guide plates 18 can increase the wind speed and facilitate the circulation of air volume. A wind speed detector 17 is fixedly provided on the top of the inside of the second ventilation duct 8, and the wind speed detector 17 can detect the flow rate of the wind in the air duct. The first rubber sealing pad 6 is fixedly provided on the four sides of the first connecting flange 4, and the first rubber sealing pad 6 can improve the sealing of the equipment connection. The second rubber sealing pad 11 is fixedly provided on the four sides of the second connecting flange 9, and the second rubber sealing pad 11 can improve the sealing of the equipment connection.

[0032] Working principle: During the use of the utility model, first, a sound insulation board 12 is arranged inside the inner wall of the sound-absorbing static pressure box 1, and a sound-absorbing cotton 13 is arranged on the inner wall of the sound insulation board 12. Most of the noise inside the static pressure box 1 can be absorbed by the arrangement of the sound-absorbing cotton 13. After most of the noise inside the static pressure box 1 is absorbed, the sound insulation board 12 at the rear end of the sound-absorbing cotton 13 is used to isolate the residual noise to prevent the noise from leaking to the outside, thereby greatly improving the sound insulation effect of the static pressure box 1. A first rubber sealing pad 11 is arranged on the four sides of the first connecting flange 4, and a second rubber sealing pad 11 is arranged on the four sides of the second connecting flange 9. The flange is connected to the air duct. The first rubber sealing pad 6 and the second rubber sealing pad 11 at the connection can greatly improve the sealing of the equipment, thereby achieving a better ventilation effect. A first guide vane 14, a second guide vane 15 and a third guide vane 16 are arranged inside the static pressure box 1. The wind speed of the ventilation duct can be increased by the arrangement of the guide vanes, making it more efficient and better.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An impedance type anechoic plenum box, comprising a plenum box (1), characterized in that: An air inlet (2) is fixedly provided on one side of the static pressure box (1); a first ventilation pipe (3) is fixedly provided on the front end surface of the air inlet (2); a first connecting flange (4) is fixedly provided on the front end surface of the first ventilation pipe (3); and a plurality of first bolt holes (5) are fixedly provided on the four sides of the first connecting flange (4).

2. The impedance type anechoic static pressure box according to claim 1, characterized in that: The static pressure box (1) is fixedly provided with a 100-ohm air outlet (7) on one side away from the air inlet (2); a second ventilation pipe (8) is fixedly provided on the front end face of the air outlet (7); a second connecting flange (9) is fixedly provided on the front end face of the second ventilation pipe (8); and a plurality of second bolt holes (10) are fixedly provided on the four sides of the second connecting flange (9).

3. The impedance type anechoic static pressure box according to claim 1, characterized in that: A sound insulation board (12) is fixedly arranged on the inner wall of the static pressure box (1), and sound-absorbing cotton (13) is fixedly arranged on the inner wall of the sound insulation board (12).

4. The impedance type anechoic static pressure box according to claim 1, characterized in that: A first guide vane (14) is fixedly arranged inside the static pressure box (1), a second guide vane (15) is fixedly arranged on one side of the first guide vane (14), and a third guide vane (16) is fixedly arranged on one side of the second guide vane (15).

5. The impedance type anechoic static pressure box according to claim 2, characterized in that: A plurality of air guide plates (18) are fixedly arranged inside the second ventilation pipe (8).

6. The impedance type anechoic static pressure box according to claim 2, characterized in that: A wind speed detector (17) is fixedly arranged on the top of the interior of the second ventilation pipe (8).

7. The impedance type anechoic static pressure box according to claim 1, characterized in that: First rubber sealing pads (6) are fixedly arranged on the four sides of the first connecting flange (4).

8. The impedance type anechoic static pressure box according to claim 2, characterized in that: Second rubber sealing pads (11) are fixedly arranged on the four sides of the second connecting flange (9).

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