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A ductless air supply device suitable for underground water treatment structures

A technology for air supply devices and structures, applied in fiber processing, applications, ventilation systems, etc., can solve the problem that noise-absorbing and rain-proof louvers and sound-absorbing protective panels fail to play a normal role in noise reduction, and reduce the overall burial of underground water treatment structures. Deep, noise reduction effect needs to be improved, etc., to achieve good bending strength and impact strength, low wet expansion rate, and reduce noise

Active Publication Date: 2021-06-04
SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in the underground water treatment structures that have been built in my country, air ducts are generally used to supply air, that is, a large number of air supply ducts are arranged to be hoisted at the lower part of the roof of the basement structure. This method has dead angles for ventilation, high energy consumption and noise. , inconvenient maintenance, high cost and other defects
Aiming at the defects existing in the prior art, the inventor has researched a ductless air supply device (the publication number is CN109322376A) in the early stage, which has air age and pollutants (mainly H 2 S) is low, ventilation efficiency and sewage discharge efficiency are high, which can effectively reduce the overall buried depth of underground water treatment structures, reduce the pressure head of fans, and save initial investment in construction, energy consumption in operation and maintenance costs. However, it was found in the actual use process that The noise reduction effect of this device still needs to be improved, because the air supply device without duct is placed in an underground water treatment structure, and the air humidity is relatively high, so that the noise reduction and rain-proof louvers and the sound-absorbing protective panel cannot normally perform the noise reduction effect

Method used

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  • A ductless air supply device suitable for underground water treatment structures
  • A ductless air supply device suitable for underground water treatment structures
  • A ductless air supply device suitable for underground water treatment structures

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1, sound-absorbing material

[0047] The preparation method of the sound-absorbing panel or sound-absorbing material comprises the following steps: spraying the pretreated jute fiber and basalt fiber with a polysulfone resin solution with a solid content of 20%, at a temperature of 40°C / 1.5h, 90°C / 3h, drying under the condition of 140°C / 1.5h, and then hot-pressing under the conditions of temperature of 200°C, pressure of 1.5MPa, and holding time of 20min.

[0048] Among them, the mass ratio of pretreated jute fiber, basalt fiber and polysulfone resin is 40:15:50.

[0049] The preparation method of the pretreated jute fiber comprises the following steps: cleaning the jute fiber, soaking in 10wt% sodium hydroxide for 1h, drying in a 35°C oven for 3h, and then spraying it with a moisture-proof coating under high pressure, placing it in an oven at 35°C for 10h, instant;

[0050] The preparation method of the moisture-proof coating comprises the following steps: ...

Embodiment 2

[0051] Embodiment 2, sound-absorbing material

[0052] The preparation method of the sound-absorbing panel or sound-absorbing material comprises the following steps: spraying the pretreated jute fiber and basalt fiber with a polysulfone resin solution with a solid content of 20%, at a temperature of 40°C / 1.5h, 90°C / 3h, drying under the condition of 140°C / 1.5h, and then hot pressing under the conditions of temperature of 200°C, pressure of 1MPa, and holding time of 20min.

[0053] Among them, the mass ratio of pretreated jute fiber, basalt fiber and polysulfone resin is 40:10:50.

[0054] The preparation method of the pretreated jute fiber comprises the following steps: the jute fiber is cleaned, soaked in 10wt% sodium hydroxide for 1h, dried in a 35°C oven for 3.5h, and then sprayed with a moisture-proof coating under high pressure, placed in a 35°C oven for 10h , that is;

[0055] The preparation method of the moisture-proof coating includes the following steps: mixing 2 p...

Embodiment 3

[0056] Embodiment 3, sound-absorbing material

[0057] The preparation method of the sound-absorbing panel or sound-absorbing material comprises the following steps: spraying the pretreated jute fiber and basalt fiber with a polysulfone resin solution with a solid content of 20%, at a temperature of 40°C / 1.5h, 90°C / 3h, drying under the condition of 140°C / 1.5h, and then hot pressing under the conditions of temperature of 210°C, pressure of 1.5MPa, and holding time of 20min.

[0058] Among them, the mass ratio of pretreated jute fiber, basalt fiber and polysulfone resin is 40:10:50.

[0059] The preparation method of the pretreated jute fiber comprises the following steps: cleaning the jute fiber, soaking in 10wt% sodium hydroxide for 1h, drying in a 35°C oven for 3h, and then spraying it with a moisture-proof coating under high pressure, placing it in an oven at 35°C for 10h, instant;

[0060] The preparation method of the moisture-proof coating includes the following steps:...

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Abstract

The invention belongs to the technical field of water treatment, and in particular relates to a ductless air supply device suitable for underground water treatment structures. The ductless air supply device of the present invention includes an air supply shaft, an air inlet passage and an air supply corridor, wherein the air supply shaft part is located above the ground, and the air supply shaft is connected to the outside; one end of the air inlet passage communicates with the outside through the air supply shaft, The other end is connected to the air supply corridor, and a blower fan is installed in the air inlet channel; the air supply corridor is arranged along the width direction of the underground water treatment structure, and the upper part facing the ventilation target area is provided with a light solid wall, and the lower part is provided with holes near the personnel activity area The flow equalization orifice plate whose rate changes along the width direction of the structure; noise-absorbing and rain-proof louvers are installed at the air inlet around the air supply shaft, and an array muffler is arranged inside. The invention greatly reduces the noise generated by the ductless air supply device during operation by improving the noise-absorbing rain-proof louvers and the sound-absorbing protective panels and sound-absorbing materials in the array muffler.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a ductless air supply device suitable for underground water treatment structures. Background technique [0002] Underground water treatment structures have become a new direction of municipal engineering construction. They are generally divided into three floors: the ground floor, the first underground floor and the second underground floor. The ground floor is equipped with exhaust shafts and passageways for pedestrians and vehicles, the basement level is a space for equipment hoisting and inspection, and the basement two level is equipped with water treatment structures. Among them, the basement floor is the main stay area for personnel. Due to the relative closeness and poor natural ventilation conditions, a mechanical ventilation system must be installed here to ensure air quality. [0003] At present, in the underground water treatment structures that ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F7/007F24F13/24D06M15/37D06M11/38C09D183/04C09D7/61B29C70/40D06M101/06
CPCB29C70/40C09D183/04C09D7/61D06M11/38D06M15/37D06M2101/06F24F7/007F24F13/24C08K3/36
Inventor 张欣董磊高乃平肖艳杜炯班春燕郑凯
Owner SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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