CN212238567U - An active safety energy-saving fume hood - Google Patents

Abstract

The utility model discloses an active safety energy-saving type fume hood, which comprises an upper cabinet body, a lower cabinet body, a gas collection and processing device and a fume hood. The fume hood is composed of an upper cabinet body and a lower cabinet body. The upper cabinet is composed of an outer casing and a gas collection and treatment device. The outer casing and the gas collection and treatment device are connected by bolts through the installation holes, and the upper cabinet is connected with the lower cabinet through the installation holes at the lower end using bolts. The front part of the collection and treatment device is provided with an operation port, the upper end of the operation port is provided with a moving window, and the lower end is provided with a power air curtain. A wind pressure stabilizer is installed. The utility model effectively controls the overflow of toxic, harmful and odorous gases in the fume hood, effectively treats and absorbs the exhaust gas of the fume hood, ensures the safety of laboratory personnel and system operation, and reduces the energy consumption of system operation and air conditioning in the laboratory.

Description

An active safety energy-saving fume hood

technical field

The utility model relates to the technical field of exhaust hoods, in particular to an active safety energy-saving type exhaust hood.

Background technique

The fume hood is a kind of ventilation equipment widely used at home and abroad. It has complete functions and strict protection. It not only provides comprehensive protection for the operator, but also resists the corrosion of various chemical acids, alkalis and organic reagents, and does not contaminate the interior. experimental samples. It ensures the smooth discharge of toxic, harmful and odorous gases, and makes the experimental environment reach the safety effect stipulated by the national standard.

Shortcomings of the prior art: The current fume hood has two main problems: low safety and high energy consumption. The main function of the fume hood is to discharge toxic, harmful and odorous gases to protect the health and safety of laboratory personnel. On the one hand, because the fume hood draws and exhausts the gas in the cabinet through negative pressure, there is no safety measure to prevent the gas from overflowing at the operation port. When the negative pressure fluctuates or the pressure is insufficient, toxic, harmful and odorous gases will leak, endangering the Personnel safety. On the other hand, the exhaust gas discharged from the fume hood directly enters the main pipeline of the laboratory exhaust system without decomposition and absorption treatment measures. The exhaust gas of different components will react in the system pipeline to generate harmful aerosols or be susceptible to poisoning and explosive preparation. compounds, thereby increasing laboratory safety hazards.

At present, the fume hood needs to maintain a high negative pressure in the cabinet, so the exhaust air volume is more than 1000 cubic meters per hour to ensure that toxic, harmful and odorous gases cannot leak from the operation port. On the one hand, the system needs to exhaust air. Large volume and high exhaust pressure require high-power exhaust fans, resulting in high system energy consumption and high operating costs. On the other hand, the relatively high exhaust air volume of the fume hood extracts a large amount of air in the laboratory, taking away a considerable amount of cooling or heat, resulting in wasted energy consumption of the air conditioning system and heating system in the laboratory.

Utility model content

The purpose of the utility model is to provide an active safety energy-saving fume hood, which has the advantages of low energy consumption and high safety, and solves the problems mentioned in the background art.

In order to achieve the above purpose, the utility model provides the following technical solutions: an active safety energy-saving type fume hood, comprising an upper cabinet body, a lower cabinet body, a gas collection and processing device and a fume hood, and the fume hood is composed of an upper cabinet. The upper cabinet is composed of an outer casing and a gas collection and treatment device. The outer casing and the gas collection and treatment device are connected by bolts through the installation holes at the front and rear ends, and the upper cabinet is connected through the installation holes at the lower end. Bolts are used to connect with the lower cabinet. The front of the gas collection and treatment device is provided with an operation port, the upper end of the operation port is provided with a moving window, and the lower end is provided with a power air curtain. A gas absorption device is arranged inside the gas pipe, and a wind pressure stabilizer is installed on the upper end of the rectangular gas collecting pipe.

Preferably, the power air curtain can be blown from bottom to top at the lower end of the operation port.

Preferably, a gas absorption device is arranged inside the rectangular gas collecting pipe.

Preferably, a wind pressure stabilizer is installed on the upper end of the rectangular gas collecting pipe.

Compared with the prior art, the beneficial effects of the present utility model are as follows:

1. The utility model is provided with a moving window at the upper end of the operation port, the moving window can slide up and down on the operation port, and the lower end is provided with a power air curtain, the power air curtain is blown from the bottom to the top, and is inclined to the inside by the negative pressure inside the device. The moving window is closed. The open space of the operation port caused by the upward movement ensures that the internal gas will not overflow at the operation port, so as to achieve the purpose of actively ensuring the safety of operators.

2. The utility model forms a gas processing space through a rectangular gas collecting pipe and a gas collecting and processing device, and the gas enters the rectangular gas collecting pipe from the gas collecting hole by the internal negative pressure, flows through the gas collecting and processing device, and realizes the removal of toxic and harmful components. , which is discharged from the upper end of the rectangular air collecting pipe into the main pipe of the exhaust system.

3. The utility model achieves the purpose of actively keeping the negative pressure of the exhaust air in the exhaust cabinet unchanged by setting the air pressure stabilizer at the upper end of the air collecting pipe.

Description of drawings

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

Fig. 2 is the overall schematic diagram of the utility model;

Fig. 3 is the front view of the utility model;

FIG. 4 is a schematic diagram of the structure of the upper cabinet of the present invention.

In the figure: 1. Upper cabinet; 2. Lower cabinet; 3. Gas collection and processing device; 4. Moving window; 5. Operation port; 6. Power air curtain; 7. Rectangular gas collecting pipe; 8. Air collecting hole; 9. Gas absorption device; 10, wind pressure stabilizer; 11, outer casing; 12, side door; 13, front door; 14, fume cupboard.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to FIG. 1 to FIG. 4, the present utility model provides a technical solution of an active safety energy-saving fume hood: an active safety energy-saving fume hood, comprising an upper cabinet 1, a lower cabinet 2, and a gas collection and processing unit. The device 3 and the fume cupboard 14, the fume cupboard 14 consists of an upper cabinet 1 and a lower cabinet 2, the front door 13 is installed on the front of the lower cabinet 2, the number of the front doors 13 is four, and the side of the lower cabinet 2 is provided with a Mobile side door 12; the required experimental items are normally put into the cabinet from the front door 13 of the lower cabinet 2. When the length and volume of the experimental items are large, they can be put in from the side door 12 of the lower cabinet 2. The upper cabinet 1 is composed of an outer casing 11 and a gas collection and treatment device 3. The outer casing 11 and the gas collection and treatment device 3 are connected by bolts through the installation holes at the front and rear ends. The lower cabinet body 2 is connected, the front part of the gas collection and processing device 3 is provided with an operation port 5, the upper end of the operation port 5 is provided with a movable window 4, the movable window 4 can slide up and down on the operation port 5, and the lower end is provided with a power air curtain 6; The upper end of the port 5 is provided with a movable window 4, which can slide up and down on the operation port 5, and the lower end is provided with a power air curtain 6. The power air curtain 6 is blown from the bottom to the top, and is inclined to the inside by the negative pressure inside the device. The movable window is closed. 4. The open space of the operation port 5 caused by the upward movement ensures that the internal gas will not overflow at the operation port 5, so as to achieve the purpose of actively ensuring the safety of the operator. A rectangular gas collecting pipe 7 is installed at the rear of the gas collecting and processing device 3, a gas collecting hole 8 is arranged on one side of the rectangular gas collecting pipe 7, a gas absorption device 9 is arranged inside the rectangular gas collecting pipe 7, and a wind pressure stabilizer 10 is installed on the upper end of the rectangular gas collecting pipe 7 Rectangular gas collecting pipe 7 and gas collection processing device 3 form a gas processing space, and gas enters rectangular gas collecting pipe 7 from gas collecting hole 8 by internal negative pressure, flows through gas collection processing device 3, removes toxic and harmful components, and passes through wind pressure stabilizer 10 , and is discharged into the main pipe of the exhaust system from the upper end of the rectangular gas collecting pipe 7 .

Working principle: before the utility model is used, the external power supply is connected, the exhaust cabinet 14 works, the power air curtain 6 installed at the lower end of the operation port 5 works, and the gas is purged from the bottom to the top, and the moving window 4 on the operation port 5 moves up to form The operation port 5 has an open space to isolate the internal gas from overflowing at the operation port 5. The rectangular gas collecting pipe 7 and the gas collecting and processing device 3 form a gas processing space. The gas enters into the rectangular gas collecting pipe 7 from the gas collecting hole 8 opened on the rectangular gas collecting pipe 7 by the internal negative pressure, flows through the gas collecting and processing device 3, removes toxic and harmful components, passes through the wind pressure stabilizer 10, and is discharged from the upper end of the rectangular gas collecting pipe 7. Intake and exhaust system main duct.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (4)

1. An active safety energy-saving type fume hood, comprising an upper cabinet body (1), a lower cabinet body (2), a gas collection and processing device (3) and a fume hood (14), characterized in that: the row The wind cabinet (14) is composed of an upper cabinet body (1) and a lower cabinet body (2), the upper cabinet body (1) is composed of an outer casing (11) and a gas collecting and processing device (3), and the outer casing ( 11) It is connected with the gas collection and processing device (3) by bolts through the installation holes at the front and rear ends, and the upper cabinet (1) is connected with the lower cabinet (2) by bolts through the installation holes at the lower end. The gas collection and processing device ( 3) The front part is provided with an operation port (5), the upper end of the operation port (5) is provided with a moving window (4), the lower end is provided with a power air curtain (6), and a rectangular gas collecting pipe is installed at the rear of the gas collection and processing device (3). (7), a gas absorption device (9) is arranged inside the rectangular gas collecting pipe (7), and a wind pressure stabilizer (10) is installed on the upper end of the rectangular gas collecting pipe (7). 2 . The active safety energy-saving fume hood according to claim 1 , wherein the power air curtain ( 6 ) can be blown from bottom to top at the lower end of the operation port ( 5 ). 3 . 3 . The active safety energy-saving fume hood according to claim 1 , wherein a gas absorption device ( 9 ) is arranged inside the rectangular gas collecting pipe ( 7 ). 4 . 4 . The active safety energy-saving fume hood according to claim 1 , wherein a wind pressure stabilizer ( 10 ) is installed on the upper end of the rectangular air collecting pipe ( 7 ). 5 .

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