A special exhaust cabinet for organic solvent cleaning

Abstract

The utility model discloses a kind of exhaust cabinets specially used for organic solvent cleaning, relate to exhaust hood technical field.Patent includes base, the base is used to provide supporting action;One side outer surface of the cover body abuts against wall body;The exhaust port is located in the top surface of cover body, for connecting cover body and exhaust pipe;The exhaust pipe is arranged at the top end of cover body, for connecting exhaust port and waste gas processor;The waste gas processor is used to handle gaseous organic toxicant that exhaust cabinet captures and discharges, connects exhaust pipe and fan;The fan is used to provide power.The exhaust cabinet specially used for organic solvent cleaning improves the efficiency of cover body to capture organic toxicant in air, ensures that airflow organization is smooth, gaseous organic toxicant that is diffused into air when cleaning object does not pass through the respiratory zone of worker, protects the health of worker.

Description

Technical Field

[0001] This utility model relates to the field of exhaust hood technology, specifically an exhaust cabinet for cleaning with organic solvents. Background Technology

[0002] A fume hood is an occupational disease prevention facility that uses a ventilation system to create negative pressure to draw away the air and mist inside the working chamber. It is used to capture toxic and harmful substances in the air and discharge them outdoors, ensuring that personnel are not contaminated by chemical toxins during cleaning.

[0003] However, existing fume hoods have the following defects in use: 1. The fume hood is too large and the exhaust pipe diameter is too small. The compatibility between the two and the fan is not high, resulting in excessive energy consumption or failure to control the wind speed, thus failing to effectively capture and discharge organic toxins in the air; 2. The effectiveness of the fume hood has not been evaluated through airflow organization, wind speed control, and toxin concentration.

[0004] To address the aforementioned deficiencies, Chinese Patent Publication No. CN216226062U discloses a ventilated cleaning cabinet, comprising a cabinet body with a cleaning chamber. A water pipe is installed inside the cleaning chamber, and a cleaning nozzle is mounted on the water pipe. An installation groove is formed on the cabinet body, and a side door panel is hinged to the installation groove. An exhaust duct is installed on the cabinet body, and an axial flow fan is installed on the exhaust duct. A square box is installed on the exhaust duct, with one side open. The square box is equipped with a mechanism for treating harmful gases generated during the cleaning process. When the cabinet body is performing cleaning operations, activated carbon plates installed inside the frame on the square box adsorb and purify the passing gases, preventing harmful gases generated during the cleaning process from being directly released into the air and causing environmental pollution. This mechanism facilitates the cleaning operation of the cabinet.

[0005] The aforementioned device facilitates the discharge of gases generated during cleaning through its processing mechanism. However, the device consumes a large amount of energy in order to maintain the control air velocity at the opening, making it unsuitable for cleaning small items with organic solvents. Furthermore, the effectiveness of the ventilation cleaning cabinet has not been evaluated with specific data. Utility Model Content

[0006] The purpose of this invention is to provide a fume hood specifically for cleaning with organic solvents, in order to solve the problems mentioned in the background art, such as high energy consumption or unclear effectiveness of fume hoods for cleaning small items.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a fume hood for organic solvent cleaning, comprising a base, a cover at the top of the base for support, the base being 1m above the ground; one outer surface of the cover is flush with a wall, with a length, width, and height of 0.45m each; an exhaust port is provided on the top surface of the cover for connecting the cover and an exhaust pipe; the exhaust pipe, 0.14m in diameter, is located at the top of the cover and connects the cover and a waste gas processor; the waste gas processor is located before a fan, connecting the exhaust pipe and the fan, and is used to treat gaseous organic toxic substances; the fan provides power with a rated power of 5.5KW.

[0008] Furthermore, a wall is provided on the outer surface of the base, and an exhaust gas processor is provided on the side of the wall away from the base and the cover.

[0009] Furthermore, a fan is provided on the outer surface of the exhaust gas processor, which is used to treat gaseous organic toxic substances.

[0010] Furthermore, the exhaust vent is fixedly connected to the cover and the exhaust pipe by screws.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] (1) The hood is fixed and supported by the base. The hood will discharge the gaseous organic toxins it captures, so that the organic toxins in the air inside the hood will not pass through the workers' breathing zone. The toxic gas will be transmitted through the exhaust pipe. The control switch is set to facilitate the operation of the equipment. The fan provides power, effectively capturing and discharging gaseous organic toxins while reducing the energy consumption of the exhaust hood and protecting the health of the workers.

[0013] (2) The cover is 1m above the ground and the opening facing the worker is open, which meets the requirements of ergonomics and makes it easy for workers to operate.

[0014] (3) The length, width and height of the enclosure are all 0.45m, the diameter of the exhaust pipe is 0.14m, and the rated power of the fan is 5.5KW. The three are well compatible, thereby improving the efficiency of the enclosure in capturing organic toxins in the air, ensuring stable airflow organization, and preventing organic toxins in the air that are released into the enclosure when cleaning objects from passing through the workers' breathing zone. They are discharged to the exhaust gas processor through the exhaust pipe, and then discharged outdoors after effective purification. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of the base of this utility model;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the wall of this utility model;

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the cover of this utility model;

[0019] Figure 5 This is a schematic diagram of the cross-sectional structure of the exhaust pipe of this utility model.

[0020] In the diagram: 1. Base; 2. Cover; 3. Exhaust pipe; 4. Exhaust vent; 5. Screw; 6. Wall; 7. Waste gas processor; 8. Fan. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1: Please refer to Figure 1 - Figure 2 This utility model provides the following technical solution: a fume hood for cleaning with organic solvents, comprising a base 1, a cover 2 at the top of the base 1 for supporting the structure, the base 1 being 1m above the ground; the cover 2 being 0.45m long, wide and high, with an exhaust port 4 on the top surface of the cover 2, one outer surface of the cover 2 being in close contact with a wall 6; an exhaust pipe 3 being located at the top of the cover 2, the exhaust pipe 3 having a diameter of 0.14m, the exhaust port 4 being used to connect the cover 2 and the exhaust pipe 3; a waste gas processor 7 being located before a fan 8, connecting the exhaust pipe 3 and the fan 8, for treating gaseous organic toxic substances; the fan 8 being used to provide power, with a rated power of 5.5KW.

[0023] The base 1 provides fixed support for the cover 2, which is made of galvanized iron sheet. The base 1 is 1m above the ground, and the opening facing the worker is open. The length, width, and height of the cover 2 are all 0.45m, located above the base 1. The table provides operating space, and the control switch is located on the side of the cover 2 to facilitate the operation of the equipment. The cover 2 conforms to ergonomic requirements and is easy for workers to operate.

[0024] Example 2: Based on Example 1, please refer to... Figure 2 - Figure 4The exhaust gas processor 7 was also disclosed, and its specific structure is as follows: a wall 6 is provided on the outer surface of the base 1, and an exhaust gas processor 7 is provided on the side of the wall 6 away from the base 1 and the cover 2. A fan 8 is provided on the outer surface of the exhaust gas processor 7. The exhaust gas processor 7 is used to treat gaseous organic toxic substances.

[0025] Depend on Figure 3 It is known that the cover 2 improves the capture efficiency of organic toxins in the air, ensures stable airflow organization, and prevents organic toxins released into the air during cleaning from passing through the workers' breathing zone, thus protecting the workers' health. In addition, the exhaust gas processor 7 purifies the gaseous organic toxins, thus protecting the environment. The captured gaseous organic toxins are discharged to the exhaust gas processor 7 via exhaust pipe 3. Exhaust pipe 3 has a diameter of 0.14m, which is well-suited to the hood 2, facilitating the discharge of organic toxins. Exhaust pipe 3 is made of galvanized iron sheet, which is wear-resistant, oxidation-resistant, aesthetically pleasing, durable, and easy to process. This solution also tested the control air velocity and the concentration of the toxic substance ethanol to confirm the effectiveness of the fume hood, i.e., effectively capturing and discharging the gaseous organic toxins within it. Specific parameters are as follows: 1. Observation through the flue gas generator pipe shows stable airflow organization; 2. Controlled air velocity is 0.66m / s, meeting the national standard of 0.5m / s for gaseous toxin control air velocity in fume hoods; 4. 100mL... 75% alcohol was poured into a 200mL beaker and placed inside the fume hood as an indicator poison. Air samples were collected for 15 minutes using an activated carbon tube at a rate of 100mL / min, 15 minutes after the fume hood was not running and 15 minutes after it was running normally. The samples were sent to the laboratory for testing within 24 hours. The measured ethanol concentration in the air inside the fume hood before and after normal operation was 69.9 mg / m³. 3 and 0mg / m 3 This indicates that the fume hood can effectively capture and discharge gaseous organic toxins inside the enclosure after it is in normal operation.

[0026] Example 3: Based on Example 1, please refer to... Figure 3 - Figure 5 The document also discloses an exhaust pipe 3, which is fixedly connected to the cover 2 and the exhaust port 4 by screws 5, with one outer surface of the cover 2 pressed against the wall 6.

[0027] The purified gas is discharged through the exhaust pipe 3 by the set fan 8. The rated power of the fan 8 is 5.5KW, which facilitates the rapid discharge of gaseous organic toxins inside the enclosure 2. The power of the fan 8 is matched with the length, width and height of the enclosure 2 and the diameter of the exhaust pipe 3, ensuring that the gaseous organic toxins in the enclosure 2 can be effectively captured and discharged.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fume hood for cleaning with organic solvents, comprising a base (1), wherein a cover (2) is provided at the top of the base (1), characterized in that: The base (1) is used to provide support and is 1m above the ground; The cover (2) is 0.45m long, wide and high. The top surface of the cover (2) is provided with an exhaust port (4) for connecting the cover (2) and the exhaust pipe (3). The exhaust pipe (3) is located at the top of the cover (2), with a diameter of 0.14m, and connects the exhaust port (4) and the exhaust gas processor (7); The exhaust gas processor (7) is located before the fan (8) and is connected to the exhaust pipe (3) and the fan (8) for treating gaseous organic toxins; The fan (8) is used to provide power and has a rated power of 5.5KW.

2. The exhaust fan for organic solvent cleaning according to claim 1, characterized in that: The outer surface of the base (1) is provided with a wall (6), and an exhaust gas processor (7) is provided on the side of the wall (6) away from the base (1) and the cover (2).

3. The exhaust fan for organic solvent cleaning according to claim 2, characterized in that: The exhaust gas processor (7) is provided with a fan (8) on its outer surface. The exhaust gas processor (7) is used to treat gaseous organic toxins.

4. The exhaust fan for organic solvent cleaning according to claim 1, characterized in that: The exhaust port (4) is connected to the cover (2) and the exhaust pipe (3) by screws (5).

5. The exhaust fan for organic solvent cleaning according to claim 1, characterized in that: One outer surface of the cover (2) is in close contact with the wall (6).

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