Waste gas treatment device for fume hood

Abstract

The utility model discloses a fume hood waste gas treatment device which comprises a fume hood body, a gas inlet pipe is installed on one side of the fume hood body, a stirring assembly is arranged at the inner bottom of the fume hood body and comprises a stirring motor and a stirring rotating shaft, a liquid conveying pipe is installed on the other side of the bottom of an inner cavity of the fume hood body, and the stirring motor is connected with the stirring rotating shaft. A stirring rotating shaft is arranged in the ventilation cabinet body, a liquid conveying pipe is arranged in the stirring rotating shaft, one end of the liquid conveying pipe is communicated with a water pump, a conveying table is arranged above the stirring rotating shaft, and a plurality of atomizing nozzles are arranged below the conveying table. The stirring motor is started to fully stir liquid in the inner cavity of the fume hood body to be dissolved with harmful substances in gas, the water pump is started to extract the liquid in the inner cavity of the fume hood body through the liquid conveying pipe, finally, the liquid is sprayed out through the atomization nozzle, and the sprayed liquid is used for dissolving the harmful substances which are not dissolved in the gas. And harmful substances in the gas can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment devices, in particular to a fume hood waste gas treatment device. Background Art

[0002] The common methods used by the waste gas treatment device to treat waste gas include adsorption, absorption, catalytic combustion, thermal combustion, etc. When selecting a purification method, the county should select a method with low cost, low energy consumption, and no secondary pollution according to the specific situation, try to turn harm into benefit, and fully recycle and utilize components and waste heat. In most cases, the petrochemical industry uses condensation, absorption, direct combustion and other methods due to high exhaust concentration; paint construction, printing and other industries use adsorption, catalytic combustion and other methods due to low exhaust concentration.

[0003] After searching, the Chinese patent document application number: 202121401856.1 discloses a fume hood with an exhaust gas treatment device, including a base, the upper surface wall of the base is fixedly connected to a cabinet body, a cavity is opened in the middle of the front surface wall of the cabinet body, and a water basin is arranged on one side of the cavity, the inner upper surface wall of the cavity is fixedly connected to an air intake hopper, the upper surface wall of the cabinet body is provided with an air intake pipe, one end of the air intake pipe is fixedly connected to the air intake hopper, and the other end of the air intake pipe is fixedly connected to a purification box, the purification box is fixedly connected to the base, and a first water tank is arranged on one side of the interior of the purification box. The utility model arranges a purification box on one side of the upper surface wall of the base, and arranges a first water tank, a water pump and a nozzle inside the purification box. The water pump can extract the acid mist from the water tank and then spray it through the nozzle, so as to effectively remove harmful gases in the exhaust gas, thereby achieving the effect of purifying the exhaust gas.

[0004] However, the above-mentioned fume hood with exhaust gas treatment device still has the following defects:

[0005] The above-mentioned fume hood with an exhaust gas treatment device is provided with a purification box on one side of the upper surface wall of the base, and a first water tank, a water pump and a nozzle are arranged inside the purification box. The water pump can extract the acid mist from the water tank and then spray it out through the nozzle, which can effectively remove harmful gases in the exhaust gas, thereby achieving the effect of purifying the exhaust gas.

[0006] However, when the exhaust gas enters the first water tank, the device does not allow the gas to dissolve with the water in the water tank, which may cause the exhaust gas in the first water tank to be unable to be completely pumped out by the water pump, resulting in residual exhaust gas in the first water tank. Therefore, we need to propose a fume hood exhaust gas treatment device to solve the above problem. Utility Model Content

[0007] The utility model aims to provide a fume hood exhaust gas treatment device, which mainly allows the exhaust gas to enter the inner cavity of the fume hood body through an air inlet pipe, and the liquid in the inner cavity of the fume hood body dissolves the harmful substances in the gas. After the gas passes through the liquid, it enters the inner cavity of the fume hood body, and the stirring motor is started to fully stir the liquid in the inner cavity of the fume hood body. The water pump starts to work, and the water pump draws the liquid in the inner cavity of the fume hood body through an infusion tube, and then transports it through the infusion tube, and finally sprays it out through an atomizing nozzle. The sprayed liquid dissolves the harmful substances in the gas that have not been dissolved, which is beneficial to reduce the harmful substances in the gas.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fume hood exhaust gas treatment device, comprising a fume hood body, an air inlet pipe is installed on one side of the fume hood body, one end of the air inlet pipe passes through and extends to the inner bottom of the fume hood body, an exhaust gas treatment component is arranged above the inner cavity of the fume hood body, a stirring component is arranged at the inner bottom of the fume hood body, the stirring component comprises a stirring motor and a stirring shaft, the base of the stirring motor is fixedly installed on one side of the fume hood body, the output shaft of the stirring motor is fixedly connected to one end of the stirring shaft, a plurality of groups of stirring blades are fixedly connected to the stirring shaft, an infusion tube is installed on the other side of the bottom of the inner cavity of the fume hood body, one end of the infusion tube is connected to a water pump, a conveying platform is arranged above the stirring shaft, the interior of the conveying platform is hollow, the water outlet end of the water pump is connected through the interior of one side of the conveying platform, and a plurality of atomizing nozzles are opened below the conveying platform.

[0009] Preferably, an activated carbon adsorption box is installed on the other side of the fume hood body, the water pump is fixedly installed inside the activated carbon adsorption box, and water inlet holes and water outlet holes are respectively provided at both ends of the activated carbon adsorption box. The infusion tube passes through the water inlet hole and is connected to one end of the water pump, and activated carbon nets are installed at the water inlet hole and the water outlet hole.

[0010] Preferably, an observation glass is installed on the surface of the fume hood body, and a liquid injection pipe is installed on a side close to the observation glass, and one end of the liquid injection pipe passes through and extends to the inner bottom of the fume hood body.

[0011] Preferably, a heating motor is fixedly mounted on the upper end of the conveying platform, one end of the heating motor is connected to a heating plate via a wire, and the heating plate is arranged below the conveying platform.

[0012] Preferably, the exhaust gas treatment component includes a hygroscopic cotton board and an activated carbon board, the hygroscopic cotton board is fixedly installed in the inner cavity of the fume hood body and arranged above the conveying platform, and the activated carbon board is installed above the hygroscopic cotton board.

[0013] Preferably, the exhaust gas treatment component further comprises an acetate fiber board, wherein the acetate fiber board is installed above the activated carbon board, and a plurality of tiny holes are formed on the surface of the acetate fiber board.

[0014] Preferably, a plurality of ultraviolet disinfection and sterilization lamps are installed on the top of the inner cavity of the fume hood body, an air outlet is opened on the other upper side of the fume hood body, an air outlet pipe is installed in the air outlet, and a fan is fixedly installed at one end of the air outlet pipe.

[0015] Preferably, a drain pipe is installed at the bottom end of the fume hood body, a control valve is provided on one side of the drain pipe, four bases are fixedly installed at the bottom of the fume hood body, and anti-slip pads are installed under the four bases.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model mainly allows the exhaust gas to enter the inner cavity of the fume hood body through the air inlet pipe, the liquid in the inner cavity of the fume hood body dissolves the harmful substances in the gas, the gas enters the inner cavity of the fume hood body after passing through the liquid, the stirring motor is started to fully stir the liquid in the inner cavity of the fume hood body, the water pump starts to work, the water pump draws the liquid in the inner cavity of the fume hood body through the infusion tube, and then transports it through the infusion tube, and finally sprays it out through the atomizing nozzle, the sprayed liquid dissolves the harmful substances in the gas that have not been dissolved, which is beneficial to reduce the harmful substances in the gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the utility model in a three-dimensional front cross-sectional view;

[0020] Figure 3 It is a schematic structural diagram of a three-dimensional side section view of the utility model;

[0021] Figure 4 It is a schematic diagram of the structure inside the activated carbon adsorption box of the utility model.

[0022] In the figure: 1. Fume hood body; 2. Observation glass; 3. Air inlet pipe; 4. Drain pipe; 5. Injection pipe; 6. Infusion pipe; 7. Activated carbon adsorption box; 701. Water inlet hole; 702. Water pump; 703. Water outlet hole; 704. Activated carbon net; 8. Air outlet pipe; 801. Air outlet hole; 802. Fan; 9. Base; 10. Stirring motor; 11. Stirring shaft; 12. Stirring blade; 13. Conveying platform; 1301. Atomizing nozzle; 14. Heating motor; 15. Heating plate; 16. Moisture-absorbing cotton board; 17. Activated carbon board; 18. Acetate board; 19. Ultraviolet disinfection and sterilization lamp. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4 The utility model provides a technical solution: a fume hood exhaust gas treatment device, comprising a fume hood body 1, an air inlet pipe 3 is installed on one side of the fume hood body 1, one end of the air inlet pipe 3 penetrates and extends to the inner bottom of the fume hood body 1, an exhaust gas treatment component is arranged above the inner cavity of the fume hood body 1, and a stirring component is arranged at the inner bottom of the fume hood body 1, the stirring component comprises a stirring motor 10 and a stirring shaft 11, the base of the stirring motor 10 is fixedly installed on one side of the fume hood body 1, the output shaft of the stirring motor 10 is fixedly connected to one end of the stirring shaft 11, and a plurality of stirring blades 12 are fixedly connected to the stirring shaft 11, an infusion tube 6 is installed on the other side of the bottom of the inner cavity of the fume hood body 1, one end of the infusion tube 6 is connected to a water pump 702, a conveying platform 13 is arranged above the stirring shaft 11, the interior of the conveying platform 13 is hollow, the water outlet end of the water pump 702 is penetrated and connected to the interior of one side of the conveying platform 13, and a plurality of atomizing nozzles 1301 are arranged below the conveying platform 13;

[0025] When in use, exhaust gas enters the inner cavity of the fume hood body 1 through the air inlet pipe 3, and the liquid in the inner cavity of the fume hood body 1 dissolves the harmful substances in the gas. After passing through the liquid, the gas enters the inner cavity of the fume hood body 1, and the stirring motor 10 is started to fully stir the liquid in the inner cavity of the fume hood body 1. The water pump 702 starts to work, and the water pump 702 draws the liquid in the inner cavity of the fume hood body 1 through the infusion tube 6, and then transports it through the infusion tube 6, and finally sprays it out through the atomizing nozzle 1301. The sprayed liquid dissolves the harmful substances that have not been dissolved in the gas, which is beneficial to reduce the harmful substances in the gas.

[0026] An activated carbon adsorption box 7 is installed on the other side of the fume hood body 1, and a water pump 702 is fixedly installed inside the activated carbon adsorption box 7. A water inlet hole 701 and a water outlet hole 703 are respectively provided at both ends of the activated carbon adsorption box 7. The infusion tube 6 passes through the water inlet hole 701 and is connected to one end of the water pump 702. Activated carbon nets 704 are installed at the water inlet hole 701 and the water outlet hole 703. Water can be conveniently introduced into and discharged from the activated carbon adsorption box 7 through the water inlet hole 701 and the water outlet hole 703. At the same time, the working status of the activated carbon adsorption box 7 can be monitored by observing the water levels of the water inlet hole 701 and the water outlet hole 703. The activated carbon net 704 can effectively filter particulate matter and impurities in the exhaust gas, thereby further ensuring the quality of the treated gas.

[0027] An observation glass 2 is installed on the surface of the fume hood body 1, and an injection tube 5 is installed on the side close to the observation glass 2. One end of the injection tube 5 passes through and extends to the inner bottom of the fume hood body 1. The coordinated use of the observation glass 2 and the injection tube 5 can help experimenters better understand the working status of the fume hood and the exhaust gas treatment effect, discover and deal with problems in time, and improve the safety and environmental protection level of the laboratory.

[0028] A heating motor 14 is fixedly installed on the upper end of the conveying platform 13, and one end of the heating motor 14 is connected to a heating plate 15 through a wire. The heating plate 15 is arranged below the conveying platform 13. The fixed installation of the heating motor 14 can ensure its stable operation. At the same time, the heating plate 15 can be remotely controlled and adjusted by connecting the heating plate 15 with a wire.

[0029] The exhaust gas treatment component includes a hygroscopic cotton board 16 and an activated carbon board 17. The hygroscopic cotton board 16 is fixedly installed in the inner cavity of the fume hood body 1 and is arranged above the conveying platform 13. The activated carbon board is installed above the hygroscopic cotton board 16. The hygroscopic cotton board 16 can effectively absorb moisture and humidity in the exhaust gas to avoid the influence of moisture in the exhaust gas on subsequent treatment links, and at the same time, it can also improve the efficiency and effect of exhaust gas treatment. The installation of the activated carbon board 17 can also improve the sealing performance of the fume hood, reduce the leakage of exhaust gas and the entry of external air, thereby ensuring the safety and stability of experimental operations in the fume hood.

[0030] The waste gas treatment component also includes an acetate board 18, which is installed above the activated carbon board 17. The surface of the acetate board 18 is provided with a plurality of tiny holes. By providing a plurality of tiny holes on the surface of the acetate board 18, the adsorption area and ventilation volume can be increased, thereby improving the efficiency and effect of the waste gas treatment.

[0031] A plurality of ultraviolet disinfection and sterilization lamps 19 are installed on the top of the inner cavity of the fume hood body 1, and an air outlet 801 is opened on the upper side of the other side of the fume hood body 1. An air outlet pipe 8 is installed in the air outlet hole 801, and a fan 802 is fixedly installed at one end of the air outlet pipe 8. Through the ultraviolet disinfection and sterilization lamps 19, multi-angle and all-round sterilization and disinfection of exhaust gas can be achieved to improve the disinfection effect, and the treated exhaust gas can be effectively discharged to the outside. Through the ventilation pipe and the fan 802, the exhaust speed and direction of the exhaust gas can also be controlled to avoid affecting the surrounding environment and improve the efficiency and effect of exhaust gas treatment.

[0032] A drain pipe 4 is installed at the bottom end of the fume hood body 1, and a control valve is provided on one side of the drain pipe 4. Four bases 9 are fixedly installed at the bottom of the fume hood body 1, and anti-slip pads are installed under the four bases 9. The installation of the drain pipe 4 can conveniently drain the accumulated water in the fume hood to avoid the impact of the accumulated water on the fume hood. At the same time, the drainage speed and flow rate can also be controlled by controlling the valve. The installation of the anti-slip pad can increase the friction at the bottom of the fume hood to prevent the fume hood from sliding or tipping over during the experiment, thereby improving the safety of the experimental operation.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fume hood exhaust gas treatment device, characterized in that: include: A fume hood body (1), wherein an air inlet pipe (3) is installed on one side of the fume hood body (1), one end of the air inlet pipe (3) penetrates and extends to the inner bottom of the fume hood body (1), and an exhaust gas treatment component is arranged above the inner cavity of the fume hood body (1); A stirring assembly is arranged at the bottom of the fume hood body (1), the stirring assembly comprising a stirring motor (10) and a stirring shaft (11), the base of the stirring motor (10) is fixedly mounted on one side of the fume hood body (1), the output shaft of the stirring motor (10) is fixedly connected to one end of the stirring shaft (11), and a plurality of stirring blades (12) are fixedly connected to the stirring shaft (11); An infusion tube (6) is installed on the other side of the bottom of the inner cavity of the fume hood body (1), one end of the infusion tube (6) is connected to a water pump (702), a conveying platform (13) is arranged above the stirring shaft (11), the interior of the conveying platform (13) is hollow, the water outlet end of the water pump (702) is connected to the inside of one side of the conveying platform (13), and a plurality of atomizing nozzles (1301) are arranged below the conveying platform (13).

2. A fume hood exhaust gas treatment device according to claim 1, characterized in that: An activated carbon adsorption box (7) is installed on the other side of the fume hood body (1), and the water pump (702) is fixedly installed inside the activated carbon adsorption box (7). The two ends of the activated carbon adsorption box (7) are respectively provided with a water inlet hole (701) and a water outlet hole (703). The infusion tube (6) passes through the water inlet hole (701) and is connected to one end of the water pump (702). Activated carbon nets (704) are installed at both the water inlet hole (701) and the water outlet hole (703).

3. A fume hood exhaust gas treatment device according to claim 2, characterized in that: An observation glass (2) is installed on the surface of the fume hood body (1), and a liquid injection pipe (5) is installed on a side close to the observation glass (2), and one end of the liquid injection pipe (5) passes through and extends to the inner bottom of the fume hood body (1).

4. A fume hood exhaust gas treatment device according to claim 3, characterized in that: A heating motor (14) is fixedly mounted on the upper end of the conveying platform (13); one end of the heating motor (14) is connected to a heating plate (15) via a wire; and the heating plate (15) is arranged below the conveying platform (13).

5. A fume hood exhaust gas treatment device according to claim 4, characterized in that: The exhaust gas treatment component comprises a moisture-absorbing cotton board (16) and an activated carbon board (17); the moisture-absorbing cotton board (16) is fixedly mounted in the inner cavity of the fume hood body (1) and arranged above the conveying platform (13); and the activated carbon board (17) is mounted above the moisture-absorbing cotton board (16).

6. A fume hood exhaust gas treatment device according to claim 5, characterized in that: The exhaust gas treatment component also includes an acetate fiber board (18), which is installed above the activated carbon board (17), and a plurality of fine holes are formed on the surface of the acetate fiber board (18).

7. A fume hood exhaust gas treatment device according to claim 6, characterized in that: A plurality of ultraviolet disinfection lamps (19) are installed at the top of the inner cavity of the fume hood body (1), and an air outlet hole (801) is opened at the top of the other side of the fume hood body (1). An air outlet pipe (8) is installed in the air outlet hole (801), and a fan (802) is fixedly installed at one end of the air outlet pipe (8).

8. A fume hood exhaust gas treatment device according to claim 7, characterized in that: A drain pipe (4) is installed at the bottom end of the fume hood body (1), a control valve is provided on one side of the drain pipe (4), and four bases (9) are fixedly installed at the bottom of the fume hood body (1), and anti-slip pads are installed below the four bases (9).

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