CN205146858U - Adsorption equipment's universal air exhaust cover is equipped with - Google Patents

Abstract

The utility model relates to a universal air extraction hood, in particular to a universal air extraction hood equipped with an adsorption device, which belongs to the technical field of air extraction hoods. It includes a universal exhaust hood body, the universal exhaust hood body is composed of a connecting shaft and an arched air collection hood, and a filter for filtering and adsorbing particles and harmful substances is installed between the connecting shaft and the arched air collecting hood. adsorption device. The utility model can filter larger particle dust in the laboratory, small harmful pollutants and absorb irritating odors of volatile solvents through the adsorption device. While improving the air quality in the laboratory, it reduces the emission of harmful substances into the atmosphere and protects the environment.

Description

Universal exhaust hood equipped with adsorption device

technical field

The utility model relates to a universal air extraction hood, in particular to a universal air extraction hood equipped with an adsorption device, which belongs to the technical field of air extraction hoods.

Background technique

The universal exhaust hood is one of the essential safety equipment in the laboratory. It is mainly used to quickly discharge small-scale dust, hot gas, volatile gas, harmful gas and other small particle-like suspended solids or gases generated during experiments or production processes, and is used to protect the health of operators and surrounding personnel. However, the universal exhaust hoods used in most laboratories directly exhaust harmful substances or gases into the atmosphere, without effective protection measures, causing certain pollution to the atmospheric environment. Therefore, how to protect the health of laboratory workers and at the same time, reduce the emission of harmful gases and protect the environment is also an issue that needs attention.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies in the prior art and provide a universal exhaust hood equipped with an adsorption device, which has a simple structure and can reduce the emission of harmful gases while protecting the health of laboratory workers.

According to the technical solution provided by the utility model, the universal air extraction hood equipped with the adsorption device includes the universal air extraction hood body, and the universal air extraction hood body is composed of a connecting shaft and an arched air collection hood. An adsorption device for filtering and adsorbing particles and harmful substances is arranged between the shaft and the arched gas collecting hood.

The adsorption device includes an adsorption device shell and a three-layer protective net arranged on the adsorption device shell; the three-layer protective net is a fiber filter screen, an activated carbon filter screen and a fine filter screen in sequence from the arched gas collection hood to the connecting shaft. . The adsorption device is rotatably connected to the thread on the tail end inner wall of the arched air collection hood in the universal exhaust hood through the thread on the shell wall of the adsorption device.

The fine filter screen is a HEPA high-efficiency air filter fine filter screen.

Beneficial effects of the utility model: the utility model can filter larger particles of dust in the laboratory, small harmful pollutants, and absorb pungent odors of volatile solvents through the adsorption device. While improving the air quality in the laboratory, it reduces the emission of harmful substances into the atmosphere and protects the environment.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic diagram of the practical adsorption device.

Explanation of reference signs: 1. Universal exhaust hood body; 2. Adsorption device; 3. Fiber filter screen; 4. Activated carbon filter screen; 5. Fine filter screen; ; 8, connecting shaft.

detailed description

Below in conjunction with specific accompanying drawing and embodiment the utility model is further described.

As shown in Figure 1 and Figure 2: In order to reduce the emission of harmful particles and gases, the utility model includes a universal exhaust hood body 1, the universal exhaust hood body 1 is composed of a connecting shaft 8 and an arched air collecting hood 6 The composition is characterized in that: an adsorption device 2 for filtering and adsorbing particles and harmful substances is arranged between the connecting shaft 8 and the arched gas collecting hood 6 .

The adsorption device 2 is rotatably connected to the thread on the tail end inner wall of the arched gas collection hood 6 in the universal exhaust hood through the thread on the wall of the adsorption device shell 7, which is convenient for disassembly, cleaning and replacement.

The adsorption device 2 comprises an adsorption device shell 7 and a three-layer protective net arranged on the adsorption device shell 7; the three-layer protective net is followed by a fiber filter screen 3 and activated carbon from the arched gas collection hood 6 to the connecting shaft 8. Filter screen 4 and fine filter screen 5. The fine filter screen 5 is a HEPA high-efficiency air filter fine filter screen.

The front layer of the adsorption device 2 is a fiber filter screen 3, which mainly filters particles with larger diameters in the air and can be disassembled and cleaned; the middle layer is an activated carbon filter screen 4, which efficiently filters dust and small harmful particles in the air, especially It has a strong adsorption effect on odors and can be replaced regularly; the last layer is a HEPA (high-efficiency air filter) fine filter 5, which can effectively filter small pollutants such as formaldehyde, PM2.5, and benzene, and can be replaced regularly.

In the adsorption device 2, the front end of the adsorption device 2 is a ventilating type, the middle cross of the gas-permeable membrane is fixed, and the tail end is a ventilating opening type, which can be put into the activated carbon filter screen 4, covered with a ventilating cover, and the front end of the adsorption device shell 7 is embedded Fiber filter 3, the end of the adsorption device housing 7 is embedded with a HEPA (high efficiency air filter) fine filter 5, the housing wall of the adsorption device 2 is designed as a rotating thread, through the thread and universal suction on the adsorption device housing 7 wall The screw thread of the tail end inner wall of the arched air collecting hood 6 in the cover is connected in a rotating manner, which is convenient for dismounting, cleaning and regular replacement.

The utility model filters larger particle dust in the laboratory, small harmful pollutants, and absorbs irritating odors of volatile solvents through the adsorption device 2 installed on the universal exhaust hood body 1 . While improving the air quality in the laboratory, it reduces the emission of harmful substances into the atmosphere and protects the environment.

Claims (4)

1. the universal draft hood of adsorbent equipment is housed, comprise universal draft hood body (1), described universal draft hood body (1) is made up of connecting axle (8) and arch gas skirt (6), it is characterized in that: be provided with the adsorbent equipment (2) for filtering with adsorption particle and harmful substance between described connecting axle (8) and arch gas skirt (6).

2. the universal draft hood of adsorbent equipment is housed as claimed in claim 1, it is characterized in that: the three-layer protection net that described adsorbent equipment (2) comprises adsorbent equipment shell (7) and is arranged on adsorbent equipment shell (7); Described three-layer protection net is followed successively by fibrous filter net (3), activated charcoal strainer (4) and smart filter screen (5) from arch gas skirt (6) to connecting axle (8) direction.

3. the universal draft hood of adsorbent equipment is housed as claimed in claim 2, it is characterized in that: described adsorbent equipment (2) carries out rotary connection by the screw thread on adsorbent equipment shell (7) wall with the screw thread of arch gas skirt (6) the tail end inwall in universal draft hood.

4. the universal draft hood of adsorbent equipment is housed as claimed in claim 2, it is characterized in that: described smart filter screen (5) is HEPA high efficiency particle air filter essence filter screen.