Assembly type smoke prevention and exhaust system static pressure box and silencer assembly

Abstract

The utility model relates to the field of assembly type smoke prevention and exhaust systems, in particular to a static pressure box and silencer assembly of an assembly type smoke prevention and exhaust system, and aims at solving the problems that no suitable product exists in the prior art, more space and cost are needed in the installation and maintenance process, the silencing effect is limited, the efficiency is low due to the large assembly difficulty, and the assembly cost is high. The product quality is influenced; the assembly type smoke prevention and exhaust system plenum chamber and silencer combination comprises a shell, an air inlet flange is installed on one side of the shell, an air inlet and a first fixing hole are formed in the air inlet flange, an air outlet flange is installed on the other side of the shell, an air outlet and a second fixing hole are formed in the air outlet flange, and the shell is further provided with a filtering structure and a silencing structure. The filter structure comprises a filter screen, the filter screen is provided with a through hole matched with the fastener, and the fastener is connected with the first fixing hole to fix the filter screen and the air inlet flange; the silencing effect is good, modular assembly is carried out, the assembly efficiency is improved, and the product quality is improved.

Description

Technical Field

[0001] The utility model relates to the field of assembled smoke prevention and exhaust systems, in particular to an assembled smoke prevention and exhaust system static pressure box and a muffler combination. Background Art

[0002] With the continuous development of modern building design, smoke control and exhaust systems have become a key component to ensure building safety and personnel evacuation. During installation and use, traditional smoke control and exhaust systems are usually divided into two parts: a static pressure box and a silencer. The static pressure box is used to control the static pressure of the airflow in the system, and the silencer is used to reduce the noise generated during the smoke exhaust process. There are currently no suitable products in the existing technology. The static pressure box and the silencer structure are often set independently, resulting in more space and cost during installation and maintenance. Since these components are installed separately, their connection parts often require complex piping layouts, which increases the complexity of system design and reduces system energy efficiency. For this reason, an assembled static pressure box and silencer combination of a smoke control and exhaust system is proposed. Utility Model Content

[0003] The present invention aims to solve the above-mentioned problems in which current equipment or existing technologies do not have products suitable for the above-mentioned problems, and have poor silencing effect, low efficiency and great difficulty in assembly during use. The invention provides an assembled static pressure box and silencer combination of a smoke exhaust system, which has good silencing effect, can be assembled in a modular manner, improves assembly efficiency, and improves product quality, thereby effectively solving the problems mentioned in the above-mentioned background technology.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is:

[0005] An assembled static pressure box and silencer combination of a smoke exhaust system includes a shell, an air inlet flange is installed on one side of the shell, the air inlet flange is provided with an air inlet and a first fixing hole, and an air outlet flange is installed on the other side of the shell, the air outlet flange is provided with an air outlet and a second fixing hole. The shell is also provided with a filtering structure and a silencer structure, the filtering structure includes a filter screen, the filter screen is provided with a through hole that cooperates with a fastener, and the fastener is connected to the first fixing hole to fix the filter screen to the air inlet flange.

[0006] The silencer structure includes a silencer net, which is provided with an end piece. The end piece is provided with a connection hole matched with a fastener. The fastener is connected to the second fixing hole to fix the silencer net to the air outlet flange.

[0007] The sound-absorbing structure also includes sound-absorbing cotton arranged around the inner wall of the shell.

[0008] The sound-absorbing cotton has a corrugated structure.

[0009] The outer side of the silencer net is fixedly connected with a filter net.

[0010] Compared with the prior art, the present invention has the following advantages:

[0011] The entire shell is made of corrosion-resistant materials such as steel plates or aluminum alloys, and the inner wall is sprayed or coated to prevent corrosion and wear. During assembly, the filter is connected to the air inlet flange, and the filter and silencer are connected to the air outlet flange together. Sound-absorbing cotton is set inside the shell to greatly reduce the harm caused by noise; it has good sound absorption effect and can also filter out most of the debris, improving product quality, and the product assembly process is simple, which can significantly shorten the assembly time, increase production speed and reduce the error rate, thereby improving overall production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of an explosion of a static pressure box and a muffler combination of an assembled smoke exhaust system of the present invention;

[0013] Figure 2 This is a schematic diagram of the structure of a static pressure box and a silencer net of an assembled smoke exhaust system in the utility model;

[0014] Figure 3 This is a schematic diagram of the interior of the shell of the static pressure box and muffler combination of an assembled smoke exhaust system of the utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the sound-absorbing cotton of the assembled static pressure box and muffler combination of the utility model;

[0016] Explanation of the numbers in the figure: shell 1, air inlet 2, air outlet 3, air inlet flange 4, first fixing hole 5, air outlet flange 6, second fixing hole 7, filter 8, through hole 9, fastener 10, end piece 12, connecting hole 13, silencer net 14, sound-absorbing cotton 16. DETAILED DESCRIPTION

[0017] The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0018] An assembled static pressure box and silencer combination of a smoke exhaust system includes a shell 1, an air inlet flange 4 is installed on one side of the shell 1, and the air inlet flange 4 is provided with an air inlet 2 and a first fixing hole 5, and an air outlet flange 6 is installed on the other side of the shell 1, and the air outlet flange 6 is provided with an air outlet 3 and a second fixing hole 7. The shell 1 is also provided with a filtering structure and a silencer structure, and the filtering structure includes a filter screen 8, and the filter screen 8 is provided with a through hole 9 that cooperates with a fastener 10. The fastener 10 is connected to the first fixing hole 5 to fix the filter screen 8 to the air inlet flange 4.

[0019] like Figure 1-3As shown, the housing 1 is square and is made entirely of corrosion-resistant materials such as steel plate or aluminum alloy. The inner wall is sprayed or coated to prevent corrosion and wear. An air inlet flange 4 is installed on one side of the housing 1. The air inlet flange 4 is provided with an air inlet 2 and a first fixing hole 5. Gas enters the housing through the air inlet 2. An air outlet flange 6 is installed on the other side of the housing 1. The air outlet flange 6 is provided with an air outlet 3 and a second fixing hole 7. Air entering the housing 1 is discharged through the air outlet 3. To prevent debris from entering the housing 1 with the air flow and excessive accumulation of debris that may affect the use of the product, a filtering structure is provided in the housing 1. The filtering structure includes a filter screen 8. Since the filter screen 8 needs to be replaced regularly, the filter screen 8 is configured to be removable and has multiple through holes 9. During assembly, the filter screen 8 is connected to the first fixing hole 5 using fasteners 19 to secure the filter screen 8 to the air inlet flange 4. Since the air flow entering the housing 1 generates noise, the generation and propagation of noise have adverse effects on the environment, work efficiency, and human health. A sound-absorbing structure is provided in the housing 1 to minimize the harm caused by noise.

[0020] The silencer structure includes a silencer net 14 , which is provided with an end piece 12 , and the end piece 12 is provided with a connection hole 13 that matches the fastener 10 , and the fastener 10 is connected to the second fixing hole 7 to fix the silencer net 14 to the air outlet flange 6 .

[0021] The silencer net 14 is a hollow mesh structure. The silencer net 14 is composed of porous materials or fiber structures. These materials can effectively absorb sound waves. Sound will collide with these materials during propagation, and part of the sound energy is converted into heat energy, thereby reducing the reflection and propagation of sound waves; the silencer net 14 is installed in the shell 1, and the air flow enters the shell 1 from the air inlet 2. The noise generated by the air flow is absorbed and dispersed by the silencer net 14 and is greatly reduced, and then discharged from the air outlet 3; in order to better fix the silencer net 14, the silencer net 14 is provided with an end piece 12, and the end piece 12 is provided with a plurality of connecting holes 13 that cooperate with the fasteners 10. During installation, the silencer net 14 is placed in the shell 1, and the fasteners 10 are used to connect the silencer net 14 to the second fixing hole 7 to fix the silencer net 14 to the outlet flange 6. The assembly process is simple, which can significantly shorten the assembly time, increase the production speed and reduce the error rate, thereby improving the overall production efficiency and product quality.

[0022] The sound-absorbing structure further includes sound-absorbing cotton 16 provided around the inner wall of the shell 1 .

[0023] The air flow enters the shell 1 from the air inlet 2, and the noise generated by the air flow is dispersed and reflected by the silencer net 14. In order to further enhance the silencer effect, silencer cotton 16 is provided around the inner wall of the shell 1, which can effectively absorb excess sound waves in the air, thereby eliminating the influence of noise and echo, avoiding excessive rebound and repeated accumulation of sound, and reducing sound attenuation and the generation of background noise.

[0024] The sound-absorbing cotton 16 has a corrugated structure.

[0025] The sound-absorbing cotton 16 uses sound-absorbing materials such as glass wool, metal fiber, ceramic fiber and the like, which can reduce noise by absorbing sound waves in the airflow. In order to increase the sound-absorbing area of ​​the sound-absorbing cotton 16, Figure 4 As shown, the sound-absorbing cotton 16 has a corrugated structure, a concave-convex structure, a cylindrical structure, etc. Through the corrugations of different heights, the sound waves can be reflected and refracted multiple times on the surface when they hit, thereby increasing the path length of the sound waves and further improving the sound absorption effect.

[0026] The outside of the silencer net 14 is fixedly connected with a filter net 8 .

[0027] The silencer net 14 is fixed in the housing 1 . In order to prevent a large amount of dust, hair and other debris from entering the housing 1 through the silencer net 14 , the filter net 8 and the silencer net 14 are fixed together on the air outlet flange 6 using fasteners 10 .

[0028] The use process of the assembled static pressure box and silencer combination of the smoke exhaust system of the utility model is as follows: the entire shell is made of corrosion-resistant materials such as steel plates or aluminum alloys, and the inner wall is sprayed or coated to prevent corrosion and wear. During assembly, the filter screen is connected to the air inlet flange, and the filter screen and the silencer screen are connected to the air outlet flange together. Sound-absorbing cotton is arranged inside the shell to greatly reduce the harm caused by noise; the product assembly process is simple, which can significantly shorten the assembly time, increase the production speed and reduce the error rate, thereby improving the overall production efficiency and product quality.

[0029] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art may make various modifications, additions, or substitute similar methods to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. An assembled static pressure box and muffler assembly of a smoke exhaust system, comprising a housing (1), characterized in that: An air inlet flange (4) is installed on one side of the shell (1), and the air inlet flange (4) is provided with an air inlet (2) and a first fixing hole (5). An air outlet flange (6) is installed on the other side of the shell (1), and the air outlet flange (6) is provided with an air outlet (3) and a second fixing hole (7). The shell (1) is also provided with a filtering structure and a silencer structure. The filtering structure includes a filter screen (8), the filter screen (8) is provided with a through hole (9) that matches the fastener (10), and the fastener (10) is connected to the first fixing hole (5) to fix the filter screen (8) to the air inlet flange (4); the silencer structure includes a silencer screen (14), the silencer screen (14) is provided with an end piece (12), the end piece (12) is provided with a connecting hole (13) that matches the fastener (10), and the fastener (10) is connected to the second fixing hole (7) to fix the silencer screen (14) to the air outlet flange (6); the silencer structure also includes sound-absorbing cotton (16) provided around the inner wall of the shell (1).

2. The assembled static pressure box and muffler assembly of a smoke control and exhaust system according to claim 1, characterized in that: The sound-absorbing cotton (16) has a corrugated structure.

3. The assembled static pressure box and muffler assembly of a smoke control and exhaust system according to claim 1, characterized in that: The outer side of the silencer net (14) is fixedly connected to a filter net (8).

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