CN109785822B

CN109785822B - Muffler structure for protective clothing

Info

Publication number: CN109785822B
Application number: CN201910056379.0A
Authority: CN
Inventors: 丁林; 邓志强; 靳海水
Original assignee: Shanghai Pudu Information Technology Co ltd
Current assignee: Shanghai Pudu Information Technology Co ltd
Priority date: 2019-01-22
Filing date: 2019-01-22
Publication date: 2023-03-14
Anticipated expiration: 2039-01-22
Also published as: CN109785822A

Abstract

The invention discloses a silencer structure for protective clothing, which comprises a shell, wherein a vent pipeline is arranged in the shell, and the shell is divided into a first cavity, a second cavity, a third cavity and a fourth cavity by a partition plate; the shell is provided with an air inlet pipe, the air inlet pipe is communicated with the first cavity, and a filter element is arranged in the first cavity; air intake of air pipeline with first cavity intercommunication sets up first micropore group, second micropore group and third micropore group on this air pipeline, first micropore group with the second cavity corresponds, the second micropore group with the third cavity corresponds, the third micropore group with the fourth cavity corresponds, air pipeline's gas outlet extends to the casing is outside. The invention effectively reduces the flow velocity of high-speed airflow, thereby greatly reducing the noise at the human ear inside the protective clothing in a working state, improving the working environment of workers, and having smaller overall structure volume, simple and practical structure and convenient popularization.

Description

Muffler structure for protective clothing

Technical Field

The invention relates to the field of medical equipment, in particular to medical protective clothing, and more particularly to a silencer structure capable of improving noise interference on personnel who work by wearing the medical protective clothing.

Background

In the ventilation system of the protective clothing, high-pressure gas directly enters the interior of the protective clothing after passing through the pressure reducing valve and the filter element, and jet flow noise can be generated due to the high speed of the gas flow, so that the working state of workers can be influenced. In order to reduce noise interference when workers wear the protective clothing to work, the noise reduction treatment is carried out on the air flow passing through the filter element by using the silencer, so that the noise heard by the workers is reduced, and the working environment of the workers is improved.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a silencer structure for protective clothing.

In order to achieve the purpose, the invention provides the following technical scheme: a muffler structure for protective clothing comprises a shell, wherein a ventilation pipeline is arranged in the shell, and the shell is divided into a first cavity, a second cavity, a third cavity and a fourth cavity through a partition board; the shell is provided with an air inlet pipe, the air inlet pipe is communicated with the first cavity, and a filter element is arranged in the first cavity; the air inlet of the ventilation pipeline is communicated with the first cavity, a first micro-hole group, a second micro-hole group and a third micro-hole group are arranged on the ventilation pipeline, the first micro-hole group corresponds to the second cavity, the second micro-hole group corresponds to the third cavity, the third micro-hole group corresponds to the fourth cavity, the air outlet of the ventilation pipeline extends to the outside of the shell, the first cavity, the third cavity and the fourth cavity are respectively arranged on two sides of the shell 1, the second cavity is arranged among the first cavity, the third cavity and the fourth cavity, and the third cavity and the fourth cavity are arranged up and down; the vent pipeline penetrates through the third cavity and the fourth cavity. ".

As a preferable technical scheme of the invention, the inner diameter D2 of the vent pipeline is more than 3 times of the inner diameter D1 of the air inlet, namely D2 is more than or equal to 3D1.

As a preferable technical scheme of the invention, the vent pipeline is in a T-shaped structure.

As a preferable technical scheme of the invention, the diameter d of the micropores of the first micropore group, the second micropore group and the third micropore group satisfies that d is more than or equal to 1mm and less than or equal to 3mm.

As a preferable technical scheme of the invention, the hole center distances s of the first micropore group, the second micropore group and the third micropore group are required to be more than or equal to 2d.

In a preferred embodiment of the present invention, the first, second, and third microporous groups have a porosity of 1% to 10%.

Compared with the prior art, the invention has the beneficial effects that: the invention effectively reduces the flow velocity of high-speed airflow, thereby greatly reducing the noise at the human ear inside the protective clothing in a working state, improving the working environment of workers, and having smaller overall structure volume, simple and practical structure and convenient popularization.

Drawings

FIG. 1 is a front view of a muffler structure for protective clothing according to the present invention;

FIG. 2 is a top view of a muffler structure for protective clothing according to the present invention;

FIG. 3 is a schematic view of the interior of a muffler structure for protective clothing according to the present invention;

in the figure: 1-a shell; 2-a first cavity; 3-a second cavity; 4-a third cavity; 5-a fourth cavity; 6-a vent line; 7-a separator; 8-a first microwell group; 9-a second microwell group; 10-a third microwell group; 11-a filter element; 12-an air inlet pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment is as follows:

referring to fig. 1 to 3, the present invention provides a muffler structure for protective clothing, including a housing 1, a ventilation pipeline 6 is disposed in the housing 1, and the housing 1 is divided into a first cavity 2, a second cavity 3, a third cavity 4 and a fourth cavity 5 by a partition 7; an air inlet pipe 12 is arranged on the shell 1, the air inlet pipe 12 is communicated with the first cavity 2, and a filter element 11 is arranged in the first cavity 2; an air inlet of the ventilation pipeline 6 is communicated with the first cavity 2, a first micro-hole group 8, a second micro-hole group 9 and a third micro-hole group 10 are formed in the ventilation pipeline 6, the first micro-hole group 8 corresponds to the second cavity 3, the second micro-hole group 9 corresponds to the third cavity 4, the third micro-hole group 10 corresponds to the fourth cavity 5, an air outlet of the ventilation pipeline 6 extends to the outside of the shell 1, the first cavity 2, the third cavity 3 and the fourth cavity 4 are respectively arranged on two sides of the shell 1, the second cavity 3 is arranged among the first cavity 2, the third cavity 4 and the fourth cavity 5, and the third cavity 4 and the fourth cavity 5 are arranged up and down; the vent line 6 passes through the third and

fourth lumens

4, 5.

In the specific implementation process, the inner diameter D2 of the vent pipeline 6 is more than 3 times of the inner diameter D1 of the air inlet, namely D2 is more than or equal to 3D1.

In the specific implementation, the vent line 6 has a "T" shape.

In the specific implementation process, the diameter d of the micropores of the first micropore group 8, the second micropore group 9 and the third micropore group 10 is larger than or equal to 1mm and smaller than or equal to 3mm.

In the specific implementation process, the hole center distance s of the first micropore group 8, the second micropore group 9 and the third micropore group 10 is required to satisfy s ≧ 2d.

In a specific implementation, the first, second, and

third microwell groups

8, 9, and 10 have a porosity of 1% to 10%.

When the air purifier works specifically, high-speed air enters the first cavity 2 from the air inlet pipe 12 with a small flow area, passes through the filter element 11 and then enters the vent pipeline 6 with the flow area far larger than that of the air inlet pipe, so that the flow speed of the air is reduced; the first micro-hole group 8 and the second cavity 3 on the ventilation pipeline 6 are utilized, so that the medium-high frequency noise can be reduced when the protective clothing is in a working state; the vent line 6 branches into the third cavity 4 and the fourth cavity 5 after passing through the second cavity 3, so that the gas flow rate is further reduced, and the second micropore group 9 and the third micropore group 10 are used again to reduce the medium-high frequency noise, so that the overall noise is reduced.

Based on the above, the invention has the advantages that: the invention effectively reduces the flow velocity of high-speed airflow, thereby greatly reducing the noise at the human ear inside the protective clothing in a working state, improving the working environment of workers, and having smaller overall structure volume, simple and practical structure and convenient popularization.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. _{A muffler structure for protective clothing, comprising a housing, characterized in that: a vent pipe is arranged in the shell} The inside of the shell is divided into a first cavity, a second cavity, a third cavity and a fourth cavity by a partition plate; the shell is provided with an air inlet pipe, the air inlet pipe is communicated with the first cavity, and a filter element is arranged in the first cavity; the air inlet of the ventilation pipeline is communicated with the first cavity, a first micro-hole group, a second micro-hole group and a third micro-hole group are arranged on the ventilation pipeline, the first micro-hole group corresponds to the second cavity, the second micro-hole group corresponds to the third cavity, the third micro-hole group corresponds to the fourth cavity, the air outlet of the ventilation pipeline extends to the outside of the shell, the first cavity, the third cavity and the fourth cavity are respectively arranged at two sides of the shell, the second cavity is arranged among the first cavity, the third cavity and the fourth cavity, and the third cavity and the fourth cavity are arranged up and down; the vent pipeline penetrates through the third cavity and the fourth cavity.

2. The muffler structure for protective clothing according to claim 1, wherein: the inner diameter D2 of the ventilation pipeline is more than 3 times of the inner diameter D1 of the air inlet, namely D2 is more than or equal to 3D1.

3. The muffler structure for protective clothing according to claim 1, wherein: the vent pipeline is in a T-shaped structure.

4. The muffler structure for protective clothing according to claim 1, wherein: the diameter d of the micropores of the first micropore group, the second micropore group and the third micropore group satisfies that d is more than or equal to 1mm and less than or equal to 3mm.

5. The muffler structure for protective clothing according to claim 4, wherein: the hole center distance s of the first micropore group, the second micropore group and the third micropore group is required to satisfy that s is more than or equal to 2d.

6. The muffler structure for protective clothing according to claim 1, wherein: the first, second and third microporous groups have a porosity of 1-10%.