Air circulation purification equipment for chemical laboratory

Abstract

The utility model relates to the technical field of air purification, in particular to air circulation purification equipment for a chemical laboratory, which not only can extract gas generated by an experimental reaction in time to prevent toxic gas generated by the reaction from influencing the health of experimenters, but also can effectively purify the air according to an experiment. Generated gas is treated in a targeted manner, and toxic gas is prevented from being discharged into the atmosphere; comprising a ventilation cabinet; the device further comprises an air exhaust mechanism, a purification mechanism, a filtering mechanism, an air suction mechanism and a heating mechanism, the air exhaust mechanism is installed on the air exchange cabinet and can conveniently and timely exhaust toxic gas generated in the experiment process, and the purification mechanism is installed on the air exchange cabinet and processes the generated gas according to the experiment. The filtering mechanism is installed on the ventilation cabinet and exhausts air out of a room, the air suction mechanism is installed on the ventilation cabinet and sucks outdoor fresh air, and the heating mechanism is installed on the air suction mechanism and heats the air.

Description

Technical Field

[0001] The utility model relates to the technical field of air purification, in particular to air circulation purification equipment for a chemical laboratory. Background Art

[0002] The chemical laboratory is a place where air pollution is easily generated. Since a large number of experiments are carried out here, harmful gases left over from the chemical reaction process are often produced. Therefore, air purification equipment usually needs to be installed in the laboratory.

[0003] Existing air circulation purification equipment, such as a laboratory air purification equipment disclosed in the utility model patent with application number 202221625091.4, has a main structure including a first purification device and a second purification device arranged above the first purification device, the left and right sides of the top of the first purification device are rotatably connected with a spline sleeve, the inner surface of the spline sleeve is slidably connected with a spline shaft, and the top of the spline shaft is fixedly connected with a threaded barrel, and the threaded barrel is rotated to extend the threaded rod, and the extension of the threaded rod causes the second purification device to rise, so that the second purification device can purify the air above the laboratory; when in use, the device is placed on the ground, and the threaded barrel is rotated to drive the spline shaft to rotate the spline sleeve, and the rotation of the threaded barrel causes the threaded rod to extend, and the extension of the threaded rod drives the connecting frame to extend the sliding tube, and the extension of the sliding tube drives the second purification device to rise, so that the second purification device is in close contact with the top surface of the laboratory.

[0004] However, toxic gases are easily present in chemical laboratories, and the purification equipment directly discharging them can easily affect the health of people outdoors. Moreover, the existing purification equipment cannot handle toxic gases in a timely manner, which can easily cause toxic gases to spread in the laboratory and affect the health of experimenters. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a chemical laboratory air circulation purification equipment which can not only extract the gas generated by the experimental reaction in time to prevent the toxic gas generated by the reaction from affecting the health of the experimenters, but also treat the generated gas in a targeted manner according to the experiment to prevent the toxic gas from being discharged into the atmosphere.

[0006] The utility model discloses an air circulation purification device for a chemical laboratory, comprising a fume hood, which is placed in the laboratory room against the outer wall and is provided with a cavity inside the fume hood; the utility model also comprises an exhaust mechanism, a purification mechanism, a filtering mechanism, an air suction mechanism and a heating mechanism, wherein the exhaust mechanism is installed on the fume hood and conveniently and timely exhausts the toxic gas generated in the experiment process, the purification mechanism is installed on the fume hood and processes the generated gas according to the experiment, the filtering mechanism is installed on the fume hood and discharges the gas into the room, the air suction mechanism is installed on the fume hood and sucks in outdoor fresh air, the heating mechanism is installed on the air suction mechanism and heats the gas; the exhaust mechanism is started, and the exhaust mechanism timely exhausts the gas generated by the reaction on each experimental table to prevent the toxic gas generated by the experimental reaction from causing harm to human health, the purification mechanism performs targeted processing and purification according to the gas that may be generated by the experiment, and then the gas is further filtered by the filtering mechanism and discharged into the room, and the air suction mechanism is started to suck in outdoor fresh air, and according to the indoor temperature, it is selected whether to heat the gas, and then the fresh air is transported back into the room.

[0007] Preferably, the exhaust mechanism includes an electric motor, a reducer, an air pump, an exhaust pipe, multiple groups of air collecting hoppers and an air supply pipe. The electric motor is installed in the cavity of the fume hood, the reducer is installed in the cavity of the fume hood, the air pump is installed in the cavity of the fume hood, the exhaust pipe is laid under the floor of the laboratory, and one end of the exhaust pipe is connected to the interior of the air pump. Multiple groups of air collecting hoppers are respectively installed on the laboratory bench and are connected to the interior of the exhaust pipe. The air supply pipe is installed on the air pump. Start the motor, and the motor drives the air pump to exhaust air through the reducer. The air pump extracts the gas generated by the reaction on the multiple groups of laboratory benches in time through the exhaust pipe and the air collecting hopper to prevent the gas from diffusing and affecting human health. The gas is then transported to the purification mechanism through the air supply pipe for purification.

[0008] Preferably, the purification mechanism includes a water tank, an infusion tube, a funnel, valve one, a drain pipe and valve two. The water tank is installed in the cavity of the ventilation cabinet, the infusion tube is installed on the ventilation cabinet and connected to the inside of the water tank, the bottom end of the funnel is connected to the top of the infusion tube, and valve one is installed on the infusion tube; the staff opens valve one and adds the corresponding solvent according to the experiment done today. For example, water-soluble gases can be absorbed by water or other solvents, benzene, toluene, etc. can be absorbed by alcohol, and bromine vapor can be absorbed by carbon tetrachloride. The corresponding solvent is poured into the funnel and then transported to the water tank through the infusion tube. Then valve one is closed to prevent gas from overflowing through the infusion tube. The gas enters the solvent through gas tube one to react with the solvent and neutralize the toxic components in the gas. After the gas purification is completed, valve two can be opened to discharge the solvent through the drain pipe.

[0009] Preferably, the filtering mechanism includes an activated carbon filter plate, a handle, an exhaust pipe and a check valve. The activated carbon filter plate is slidably mounted on the ventilation cabinet, the handle is mounted on the activated carbon filter plate, the exhaust pipe is mounted on the ventilation cabinet and connected to the interior of the cavity of the ventilation cabinet, the other end of the exhaust pipe is connected to the outside atmosphere, and the check valve is mounted on the exhaust pipe; the gas is purified by the purification mechanism and enters the cavity of the ventilation cabinet, and then the impurities in the gas are further filtered out by the activated carbon filter plate, and then the gas is discharged into the outside atmosphere through the exhaust pipe. The check valve can prevent the gas from flowing back, and the activated carbon filter plate can be pulled out and replaced through the handle after long-term use to prevent the activated carbon from losing its purification ability after saturation.

[0010] Preferably, the air intake mechanism includes an air pump 2, an air intake pipe, a mesh filter pipe and an air supply pipe 2. The air pump 2 is installed in the cavity of the ventilation cabinet and is connected to the reducer for transmission. The air intake pipe is installed on the air pump 2. The mesh filter pipe is installed on the ventilation cabinet and connected to the outside atmosphere. The mesh filter pipe is connected to the inside of the air intake pipe, and the air supply pipe 2 is installed on the air pump 2. The reducer drives the air pump 2 to exhaust air, and the mesh filter pipe performs preliminary filtering on the outside air to prevent impurities from entering the mesh filter pipe. The air pump 2 inhales the filtered fresh air through the air intake pipe, and then delivers it to the heating mechanism through the air supply pipe 2.

[0011] Preferably, the heating mechanism includes a heating box, four groups of electric thermal resistance wires, a third gas supply pipe, an exhaust hopper and multiple groups of baffles. The heating box is installed in the cavity of the ventilation cabinet. The interior of the heating box is provided with an inner cavity. The second gas supply pipe is connected with the inner cavity of the heating box. The four groups of electric thermal resistance wires are all installed in the inner cavity of the heating box. The third gas supply pipe is installed on the heating box and connected with the inner cavity of the heating box. The exhaust hopper is installed in the cavity of the ventilation cabinet and connected with the interior of the third gas supply pipe. The multiple groups of baffles are all rotatably installed on the ventilation cabinet. When the indoor temperature of the laboratory is low, the electric thermal resistance wire can be started, the second gas supply pipe transports air into the heating box, the electric thermal resistance wire heats the air, and the heated gas enters the exhaust hopper through the third gas supply pipe. Then, the angle of the baffle is adjusted to allow the hot air to diffuse into the laboratory to increase the indoor temperature. When the indoor temperature does not need to be increased, the electric thermal resistance wire can be closed to directly transport fresh air into the room.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the exhaust mechanism is started to promptly extract the gas generated by the reaction on each experimental table to prevent the toxic gas generated by the experimental reaction from causing harm to human health; the purification mechanism performs targeted treatment and purification according to the gas that may be generated by the experiment, and then the gas is further filtered through the filtering mechanism and discharged into the room; at the same time, the suction mechanism is started to inhale fresh air from the outside, and according to the indoor temperature, it is selected whether to heat the gas, and then the fresh air is transported back into the room. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1It is a schematic diagram of the axonometric structure of the utility model;

[0014] Figure 2 It is a cross-sectional axonometric structural diagram of the air extraction mechanism and the filtering mechanism of the utility model;

[0015] Figure 3 It is a partially enlarged isometric structural diagram of the purification mechanism and the filtering mechanism of the utility model;

[0016] Figure 4 It is a partially enlarged cross-sectional axonometric structural schematic diagram of the suction mechanism and heating mechanism of the utility model;

[0017] Figure 5 It is a partially enlarged cross-sectional axonometric structural schematic diagram of the heating mechanism of the utility model.

[0018] Markings in the attached figure: 01, ventilation cabinet; 02, exhaust mechanism; 21, electric motor; 22, reducer; 23, air pump one; 25, exhaust pipeline; 26, air collecting hopper; 27, gas pipeline one; 03, purification mechanism; 31, water tank; 32, infusion pipe; 33, funnel; 34, valve one; 35, drain pipe; 36, valve two; 04, filtering mechanism; 41, activated carbon filter plate; 42, handle; 43, exhaust pipe; 44, check valve; 05, suction mechanism; 51, air pump two; 52, suction pipe; 53, mesh filter tube; 54, gas pipeline two; 06, heating mechanism; 61, heating box; 62, electric heating resistance wire; 63, gas pipeline three; 64, exhaust hopper; 65, baffle. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive. Example 1

[0020] The utility model discloses an air circulation purification device for a chemical laboratory, comprising a fume hood 01, which is placed in the laboratory room against the outer wall, and a cavity is arranged inside the fume hood 01; the utility model also comprises an exhaust mechanism 02, a purification mechanism 03, a filtering mechanism 04, an air suction mechanism 05 and a heating mechanism 06, wherein the exhaust mechanism 02 is installed on the fume hood 01 and conveniently and timely extracts the toxic gas generated during the experiment, the purification mechanism 03 is installed on the fume hood 01 and processes the generated gas according to the experiment, the filtering mechanism 04 is installed on the fume hood 01 and discharges the gas into the room, and the air suction mechanism 05 is installed on the fume hood 01 and sucks in outdoor fresh air, the heating mechanism 06 is installed on the suction mechanism 05 and heats the gas; the exhaust mechanism 02 includes a motor 21, a reducer 22, an air pump 23, an exhaust pipeline 25, multiple groups of air collecting buckets 26 and a gas transmission pipe 27, the motor 21 is installed in the cavity of the ventilation cabinet 01, the reducer 22 is installed in the cavity of the ventilation cabinet 01, the air pump 23 is installed in the cavity of the ventilation cabinet 01, the exhaust pipeline 25 is laid under the floor of the laboratory, and one end of the exhaust pipeline 25 is connected to the inside of the air pump 23, and multiple groups of air collecting buckets 26 are installed on the experimental table and are connected to the exhaust pipeline 2 5 is connected internally, and the air delivery pipe 27 is installed on the air pump 23; the purification mechanism 03 includes a water tank 31, an infusion pipe 32, a funnel 33, a valve 1 34, a discharge pipe 35 and a valve 2 36. The water tank 31 is installed in the cavity of the ventilation cabinet 01, the infusion pipe 32 is installed on the ventilation cabinet 01 and is connected to the inside of the water tank 31, the bottom end of the funnel 33 is connected to the top of the infusion pipe 32, and the valve 1 34 is installed on the infusion pipe 32; the filtering mechanism 04 includes an activated carbon filter plate 41, a handle 42, an exhaust pipe 43 and a check valve 44, the activated carbon filter plate 41 is slidably installed on the ventilation cabinet 01, and the handle 42 is installed on the activated carbon filter plate 41. On the carbon filter plate 41, the exhaust pipe 43 is installed on the ventilation cabinet 01 and communicated with the cavity inside the ventilation cabinet 01, the other end of the exhaust pipe 43 is communicated with the outside atmosphere, and the check valve 44 is installed on the exhaust pipe 43; the suction mechanism 05 includes an air pump 2 51, an air suction pipe 52, a mesh filter pipe 53 and an air delivery pipe 2 54, the air pump 2 51 is installed in the cavity of the ventilation cabinet 01 and is connected to the reducer 22, the air suction pipe 52 is installed on the air pump 2 51, the mesh filter pipe 53 is installed on the ventilation cabinet 01 and communicated with the outside atmosphere, the mesh filter pipe 53 is communicated with the inside of the air suction pipe 52, and the air delivery pipe 2 54 is installed on the air pump 2 51;When it is working, the staff first opens valve 34, adds the corresponding solvent according to the experiment done today, for example, water-soluble gas can be absorbed by water or other solvents, benzene, toluene, etc. can be absorbed by alcohol, bromine vapor can be absorbed by carbon tetrachloride, pour the corresponding solvent into funnel 33, and then transport it to water tank 31 through infusion tube 32, and then close valve 34 to prevent gas from overflowing through infusion tube 32, start motor 21, motor 21 drives air pump 23 to extract air through reducer 22, and air pump 23 extracts the gas generated by the reaction on multiple groups of experimental tables in time through exhaust pipe 25 and gas collecting bucket 26 to prevent gas diffusion from affecting human health, and then transports the gas to water tank 31 through gas pipe 27 for purification. , the gas is purified by the purification mechanism 03 and enters the cavity of the ventilation cabinet 01, and then the impurities in the gas are further filtered by the activated carbon filter plate 41, and then the gas is discharged into the outside atmosphere through the exhaust pipe 43. The check valve 44 can prevent the gas from flowing back. After long-term use, the activated carbon filter plate 41 can be pulled out and replaced by the handle 42 to prevent the activated carbon from losing its purification ability after saturation. After the gas purification is completed, the valve 2 36 can be opened to discharge the solvent through the drain pipe 35, and the reducer 22 drives the air pump 2 51 to extract air, and the mesh filter tube 53 performs preliminary filtering on the outside air to prevent impurities from entering the mesh filter tube 53. The air pump 2 51 inhales the filtered fresh air through the suction pipe 52, and then delivers it to the heating mechanism 06 through the gas delivery pipe 2 54. ; Example 2

[0021] like Figures 1 to 5As shown, a chemical laboratory air circulation purification equipment of the utility model is based on Example 1; the heating mechanism 06 includes a heating box 61, four groups of electric thermal resistance wires 62, a gas pipe three 63, an exhaust hopper 64 and multiple groups of baffles 65, the heating box 61 is installed in the cavity of the ventilation cabinet 01, the interior of the heating box 61 is provided with an inner cavity, the gas pipe two 54 is connected to the inner cavity of the heating box 61, the four groups of electric thermal resistance wires 62 are all installed in the inner cavity of the heating box 61, the gas pipe three 63 is installed on the heating box 61 and is connected to the inner cavity of the heating box 61, the exhaust hopper 64 is installed in the cavity of the ventilation cabinet 01 and is connected to the inside of the gas pipe three 63, and the multiple groups of baffles 65 are all turned It is automatically installed on the ventilation cabinet 01; when it is working, the staff first opens the valve 34, adds the corresponding solvent according to the experiment done today, for example, water-soluble gas can be absorbed by water or other solvents, benzene, toluene, etc. can be absorbed by alcohol, bromine vapor can be absorbed by carbon tetrachloride, pour the corresponding solvent into the funnel 33, and then transport it to the water tank 31 through the infusion tube 32, and then close the valve 34 to prevent the gas from overflowing through the infusion tube 32, start the motor 21, the motor 21 drives the air pump 23 to extract air through the reducer 22, and the air pump 23 extracts the gas generated by the reaction on multiple groups of experimental tables in time through the exhaust pipe 25 and the gas collecting bucket 26 , to prevent the gas diffusion from affecting human health, and then transport the gas to the water tank 31 through the gas pipe 27 for purification. After being purified by the purification mechanism 03, the gas enters the cavity of the ventilation cabinet 01, and then is further filtered out of impurities in the gas by the activated carbon filter plate 41. The gas is then discharged into the outside atmosphere through the exhaust pipe 43. The check valve 44 can be set to prevent the gas from flowing back. After long-term use, the activated carbon filter plate 41 can be pulled out and replaced through the handle 42 to prevent the activated carbon from losing its purification ability after being saturated. After the gas purification is completed, the valve 36 can be opened to discharge the solvent through the drain pipe 35. The reducer 22 drives the air pump 51 to extract gas, and the net The grid filter tube 53 performs preliminary filtering on the outside air to prevent impurities from entering the grid filter tube 53. The air pump 2 51 inhales the filtered fresh air through the suction pipe 52, and then transports it to the heating mechanism 06 through the gas pipe 2 54. When the indoor temperature of the laboratory is low, the electric heating resistance wire 62 can be started, and the gas pipe 2 54 transports the air to the heating box 61. The electric heating resistance wire 62 heats the air, and the heated gas enters the exhaust hopper 64 through the gas pipe 3 63. Then, the angle of the baffle 65 is adjusted to allow the hot air to diffuse into the laboratory to increase the indoor temperature. When there is no need to increase the indoor temperature, the electric heating resistance wire 62 can be closed to directly transport fresh air into the room.

[0022] The electric motor 21, the reducer 22, the air pump 1 23 and the air pump 2 51 of the utility model are purchased on the market, and the technicians in the industry only need to install and operate them according to the accompanying instruction manuals, without the need for the technicians in this field to make creative efforts.

[0023] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An air circulation purification device for a chemical laboratory, comprising a ventilation cabinet (01), the ventilation cabinet (01) being placed in the laboratory room against the outer wall, and a cavity being arranged inside the ventilation cabinet (01); characterized in that: The invention also comprises an exhaust mechanism (02), a purification mechanism (03), a filtering mechanism (04), an air suction mechanism (05) and a heating mechanism (06). The exhaust mechanism (02) is installed on the ventilation cabinet (01) and conveniently and timely extracts the toxic gas generated during the experiment. The purification mechanism (03) is installed on the ventilation cabinet (01) and processes the generated gas according to the experiment. The filtering mechanism (04) is installed on the ventilation cabinet (01) and discharges the gas into the room. The air suction mechanism (05) is installed on the ventilation cabinet (01) and sucks in fresh air from the outside. The heating mechanism (06) is installed on the air suction mechanism (05) and heats the gas.

2. A chemical laboratory air circulation purification equipment as claimed in claim 1, characterized in that: The exhaust mechanism (02) comprises an electric motor (21), a reducer (22), an air pump (23), an exhaust pipe (25), a plurality of air collecting buckets (26) and an air supply pipe (27). The electric motor (21) is installed in the cavity of the ventilation cabinet (01), the reducer (22) is installed in the cavity of the ventilation cabinet (01), the air pump (23) is installed in the cavity of the ventilation cabinet (01), the exhaust pipe (25) is laid under the floor of the laboratory, and one end of the exhaust pipe (25) is connected to the inside of the air pump (23), the plurality of air collecting buckets (26) are respectively installed on the experimental table and are all connected to the inside of the exhaust pipe (25), and the air supply pipe (27) is installed on the air pump (23).

3. The chemical laboratory air circulation purification equipment according to claim 1, characterized in that: The purification mechanism (03) comprises a water tank (31), a liquid infusion tube (32), a funnel (33), a valve 1 (34), a liquid discharge tube (35) and a valve 2 (36); the water tank (31) is installed in the cavity of the ventilation cabinet (01); the liquid infusion tube (32) is installed on the ventilation cabinet (01) and communicates with the interior of the water tank (31); the bottom end of the funnel (33) is communicated with the top end of the liquid infusion tube (32); and the valve 1 (34) is installed on the liquid infusion tube (32).

4. A chemical laboratory air circulation purification equipment as claimed in claim 1, characterized in that: The filtering mechanism (04) comprises an activated carbon filter plate (41), a handle (42), an exhaust pipe (43) and a check valve (44); the activated carbon filter plate (41) is slidably mounted on the ventilation cabinet (01); the handle (42) is mounted on the activated carbon filter plate (41); the exhaust pipe (43) is mounted on the ventilation cabinet (01) and is connected to the interior of the cavity of the ventilation cabinet (01); the other end of the exhaust pipe (43) is connected to the outside atmosphere; and the check valve (44) is mounted on the exhaust pipe (43).

5. A chemical laboratory air circulation purification equipment as claimed in claim 2, characterized in that: The air suction mechanism (05) comprises an air pump (51), an air suction pipe (52), a mesh filter pipe (53) and an air delivery pipe (54). The air pump (51) is installed in the cavity of the ventilation cabinet (01) and is transmission-connected to the reducer (22). The air suction pipe (52) is installed on the air pump (51). The mesh filter pipe (53) is installed on the ventilation cabinet (01) and is connected to the outside atmosphere. The mesh filter pipe (53) is connected to the inside of the air suction pipe (52). The air delivery pipe (54) is installed on the air pump (51).

6. A chemical laboratory air circulation purification equipment as claimed in claim 5, characterized in that: The heating mechanism (06) comprises a heating box (61), four groups of electric heat resistance wires (62), a third gas supply pipe (63), an exhaust hopper (64) and a plurality of groups of baffles (65). The heating box (61) is installed in the cavity of the ventilation cabinet (01). An inner cavity is provided inside the heating box (61). The second gas supply pipe (54) is communicated with the inner cavity of the heating box (61). The four groups of electric heat resistance wires (62) are all installed in the inner cavity of the heating box (61). The third gas supply pipe (63) is installed on the heating box (61) and is communicated with the inner cavity of the heating box (61). The exhaust hopper (64) is installed in the cavity of the ventilation cabinet (01) and is communicated with the inner cavity of the third gas supply pipe (63). The plurality of groups of baffles (65) are all rotatably installed on the ventilation cabinet (01).

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