Acid-base fume hood with waste gas treatment function

Abstract

The utility model discloses an acid-base fume hood with a waste gas treatment function, and relates to the technical field of fume hoods, the acid-base fume hood comprises a fume hood main body, supporting legs fixedly connected to the bottom of the fume hood main body, and protection devices fixedly mounted on the left side and the right side of the fume hood main body, and the front side surface of the fume hood main body is provided with ventilation holes. An air exhaust mechanism is arranged on the surface of the top of an inner cavity of the ventilation cabinet body, a waste gas treatment mechanism is fixedly connected to the surface of the top of the air exhaust mechanism, and the air exhaust mechanism comprises an air exhaust unit arranged on the top of the inner cavity of the ventilation cabinet body. According to the utility model, air generated during an experiment is sucked into the air exhaust hood through suction force generated by the air exhaust equipment, so that ventilation and exhaust of the cabinet body are realized, the air is filtered once through the filter screen frame and then is matched with the air delivery pipe through the electric push rod, so that the air exhaust hood is driven to adjust the position, and the ventilation effect is favorably improved; therefore, the utilization efficiency of the ventilation cabinet is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fume hoods, in particular to an acid-base fume hood with a waste gas treatment function. Background Art

[0002] Fume hoods are an indispensable part of laboratory ventilation design. In order to prevent laboratory workers from inhaling or swallowing some toxic, pathogenic or unknown viral chemicals and organisms, there should be good ventilation in the laboratory. Fume hoods should be made of different materials to cope with different experimental environments. For ordinary physical and chemical experiments, general fume hoods can meet the needs, but strong corrosion experiments can be solved by PP or fiberglass fume hoods. For high temperature experiments, stainless steel fume hoods can be used.

[0003] In the existing technology, an acid-base fume hood with an exhaust gas treatment function is proposed, which is disclosed as: CN214767684U. Aiming at the problem that the existing fume hoods only extract toxic and harmful gases from the ventilation duct and discharge them to the outdoors through a fan, but fail to treat and purify the exhaust gas, which will pollute the outdoor air, the following scheme is proposed, which includes an air outlet on the top of the box body, UV lamps are fixedly installed on the inner walls on both sides of the air outlet, an activated carbon box is movably connected to the inner wall of one side of the box body, and the activated carbon box is filled with activated carbon particles, a baffle is fixedly connected to one side of the activated carbon box, the baffle and the inner wall of one side of the box body are detachably fixedly connected, and the inner walls on both sides of the box body are provided with slots, and an electrostatic adsorption plate is movably inserted in the slots; the utility model is easy to use, occupies a small area, and can treat exhaust gas.

[0004] In order to solve the problem that the fume hood only extracts toxic and harmful gases from the ventilation duct through the fan and discharges them to the outside, but fails to treat and purify the exhaust gas, which will pollute the outdoor air, the existing technology uses an electrostatic adsorption plate to treat it. However, when the fume hood is sucking air, the position of the exhaust hood is fixed, resulting in poor exhaust effect of the fume hood, reducing its practicality, and poor gas treatment effect. It is impossible to purify the harmful substances in the gas, resulting in the exhaust gas polluting the air, which in turn leads to the problem of reduced utilization efficiency of the fume hood. Utility Model Content

[0005] The utility model aims to provide an acid-base fume hood with an exhaust gas treatment function to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] An acid-base fume hood with an exhaust gas treatment function comprises a fume hood main body.

[0008] A support foot is fixedly connected to the bottom of the fume hood body.

[0009] And protective devices fixedly installed on the left and right sides of the fume hood body, the front side surface of the fume hood body is provided with ventilation holes, the top surface of the inner cavity of the fume hood body is provided with an exhaust mechanism, the top surface of the exhaust mechanism is fixedly connected with an exhaust gas treatment mechanism, the exhaust mechanism includes an exhaust unit arranged on the top of the inner cavity of the fume hood body, a filter unit is movably installed on the lower surface of the exhaust unit, the exhaust gas treatment mechanism includes a purification unit fixedly installed on the top of the fume hood body, and a guide unit is arranged inside the purification unit.

[0010] A further improvement of the technical solution of the utility model is that the exhaust unit includes an exhaust hood arranged on the top of the inner cavity of the fume hood body, a mounting block is fixedly installed on the upper surface of the exhaust hood, and an electric push rod is fixedly connected to the upper surface of the mounting block.

[0011] A further improvement of the technical solution of the utility model is that the outer surface of the electric push rod is movably connected to the inside of the fume hood body, and the top of the exhaust hood is fixedly connected to an air supply pipe, and the top of the air supply pipe is fixedly installed with an exhaust device, and the exhaust device is located on the top of the fume hood body.

[0012] A further improvement of the technical solution of the utility model is that the filter unit includes a filter screen frame movably mounted on the lower surface of the exhaust hood, positioning frames are fixedly mounted on both sides of the filter screen frame, a positioning block is clamped inside the positioning frame, and a connecting plate is fixedly connected to one side surface of the positioning block.

[0013] A further improvement of the technical solution of the utility model is that a polished rod is movably connected inside the connecting plate, a compression spring is sleeved on the outer surface of the polished rod, and both ends of the polished rod are fixedly connected to a limit plate, and the limit plate is fixedly installed on one side of the exhaust hood.

[0014] A further improvement of the technical solution of the utility model is that the purification unit includes a purification box fixedly connected to the top of the exhaust device, a fixing plate is fixedly connected to the inner wall surface of the purification box, a card slot is opened on one end surface of the fixing plate, and a purification filter screen is clamped inside the card slot.

[0015] A further improvement of the technical solution of the utility model is that the guide unit includes an exhaust fan fixedly installed at the bottom of the inner cavity of the purification box, a sealing plate is fixedly connected to the top of the fixing plate, a guide strip is fixedly installed on the inner surface of the sealing plate, and an exhaust pipe is fixedly connected to the top of the purification box.

[0016] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0017] 1. The utility model provides an acid-base fume hood with an exhaust gas treatment function. Through the cooperation of an exhaust hood, a filter frame, a mounting block, an electric push rod, an air pipe and an exhaust device, and by setting the suction force generated by the exhaust device, the gas generated during the experiment is sucked into the exhaust hood to realize ventilation and exhaust of the cabinet. The gas will be filtered through the filter frame and then matched to the air pipe through the electric push rod to drive the exhaust hood to adjust its position, which is beneficial to improving the ventilation effect, thereby improving the utilization efficiency of the fume hood.

[0018] 2. The utility model provides an acid-base fume hood with an exhaust gas treatment function, which cooperates with a purification box, a fixed plate, a purification filter screen, an exhaust fan, a sealing plate, a guide strip and an exhaust pipe. An exhaust fan is provided to discharge the inhaled gas upward, and the gas is purified by passing through the purification filter screen clamped on the inside of the fixed plate. At the same time, the gas is guided through the cooperation between the sealing plate and the guide strip to keep the gas flow direction upward. A plurality of purification filter screens are provided, and the purification filter screens can be disassembled and replaced, which is beneficial to improving the gas purification effect. The gas is then discharged through the exhaust pipe to avoid pollution to the outside air, thereby improving the use efficiency of the fume hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a three-dimensional schematic diagram of the structural air extraction mechanism of the utility model;

[0021] Figure 3 for Figure 2 The enlarged schematic diagram;

[0022] Figure 4 It is a three-dimensional cross-sectional schematic diagram of the structural exhaust gas treatment mechanism of the utility model.

[0023] In the figure: 1. Fume hood body; 11. Ventilation holes; 2. Support feet; 3. Protective device; 4. Exhaust mechanism; 41. Exhaust hood; 42. Filter frame; 421. Positioning frame; 422. Positioning block; 423. Connecting plate; 424. Light rod; 425. Compression spring; 426. Limiting plate; 43. Mounting block; 44. Electric push rod; 45. Air pipe; 46. Exhaust equipment; 5. Waste gas treatment mechanism; 51. Purification box; 52. Fixing plate; 53. Purification filter plate; 54. Exhaust fan; 55. Sealing plate; 56. Guide strip; 57. Exhaust pipe. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the embodiments:

[0025] Example 1

[0026] like Figure 1-4 As shown, the utility model provides an acid-base fume hood with an exhaust gas treatment function, including a fume hood main body 1, a supporting foot 2 fixedly connected to the bottom of the fume hood main body 1, and a protective device 3 fixedly installed on the left and right sides of the fume hood main body 1, a ventilation hole 11 is opened on the front side surface of the fume hood main body 1, an exhaust mechanism 4 is arranged on the top surface of the inner cavity of the fume hood main body 1, and an exhaust gas treatment mechanism 5 is fixedly connected to the top surface of the exhaust mechanism 4, the exhaust mechanism 4 includes an exhaust unit arranged on the top of the inner cavity of the fume hood main body 1, a filter unit is movably installed on the lower surface of the exhaust unit, the exhaust gas treatment mechanism 5 includes a purification unit fixedly installed on the top of the fume hood main body 1, a flow guide unit is arranged inside the purification unit, and the exhaust unit includes an exhaust unit arranged on the fume hood main body 1, an exhaust hood 41 is disposed on the top of the inner cavity, a mounting block 43 is fixedly mounted on the upper surface of the exhaust hood 41, an electric push rod 44 is fixedly connected to the upper surface of the mounting block 43, the outer surface of the electric push rod 44 is movably connected to the inside of the fume hood body 1, and an air supply pipe 45 is fixedly connected to the top of the exhaust hood 41, an exhaust device 46 is fixedly mounted on the top of the air supply pipe 45, and the exhaust device 46 is located at the top of the fume hood body 1. By setting the suction force generated by the exhaust device 46, the gas generated during the experiment is sucked into the exhaust hood 41 to realize the ventilation and exhaust of the cabinet. The gas will be filtered through the filter frame 42 once, and then matched to the air supply pipe 45 through the electric push rod 44, so as to drive the exhaust hood 41 to adjust its position, which is beneficial to improving the ventilation effect.

[0027] Example 2

[0028] like Figure 1-4 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the filter unit includes a filter frame 42 movably mounted on the lower surface of the exhaust hood 41, and positioning frames 421 are fixedly mounted on both sides of the filter frame 42, and a positioning block 422 is clamped inside the positioning frame 421, and a connecting plate 423 is fixedly connected to the surface of one side of the positioning block 422, and a light rod 424 is movably connected to the inside of the connecting plate 423, and a compression spring 425 is sleeved on the outer surface of the light rod 424, and both ends of the light rod 424 are fixedly connected to a limiting plate 426, and the limiting plate 426 is fixedly mounted on one side of the exhaust hood 41. When the filter frame 42 is disassembled and replaced, a pressure is applied to the surface of the positioning block 422, so that it can lead the connecting plate 423 to slide on the surface of the light rod 424, and the compression spring 425 is compressed until the positioning block 422 is separated from the positioning frame 421, and the disassembly is completed.

[0029] Example 3

[0030] like Figure 1-4 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the purification unit includes a purification box 51 fixedly connected to the top of the exhaust device 46, the inner wall surface of the purification box 51 is fixedly connected with a fixing plate 52, one end surface of the fixing plate 52 is provided with a card slot, the inside of the card slot is card-connected with a purification filter plate 53, the guide unit includes an exhaust fan 54 fixedly installed at the bottom of the inner cavity of the purification box 51, the upper part of the fixing plate 52 is fixedly connected with a sealing plate 55, the inner side surface of the sealing plate 55 is fixedly installed with a guide strip 56, the top of the purification box 51 An exhaust pipe 57 is fixedly connected, and an exhaust fan 54 is provided to discharge the inhaled gas upward, and purify it through a purification filter plate 53 clamped on the inside of the fixed plate 52. At the same time, the gas is guided along the surface of the guide strip 56 to keep the flow direction of the gas upward, and then a sealing plate 55 is used to prevent gas leakage by sealing, and multiple groups of purification filter plates 53 are provided, and the purification filter plates 53 can be disassembled and replaced, which is beneficial to improve the gas purification effect, and then discharged through the exhaust pipe 57 to avoid pollution of the outside air.

[0031] The following is a detailed description of the working principle of the acid and alkali fume hood with exhaust gas treatment function.

[0032] like Figure 1-4 As shown, first, by setting the suction force generated by the exhaust device 46, the gas generated during the experiment is sucked into the exhaust hood 41 to realize the ventilation and exhaust of the cabinet. The gas will be filtered through the filter frame 42. The filter frame 42 is removable for replacement, and then the electric push rod 44 is matched with the gas pipe 45 to drive the exhaust hood 41 to adjust the position, which is beneficial to improve the ventilation effect. Then, by setting the exhaust fan 54, the inhaled gas is discharged upward and purified through the purification filter plate 53 clamped on the inside of the fixing plate 52. At the same time, the gas is guided along the surface of the guide strip 56 to keep the gas flow direction upward. Then, the sealing plate 55 is used to prevent gas leakage through sealing, and multiple groups of purification filter plates 53 are set, and the purification filter plates 53 can be disassembled and replaced, which is beneficial to improve the gas purification effect. Then, the gas is discharged through the exhaust pipe 57 to avoid pollution of the outside air.

[0033] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. An acid-base fume hood with an exhaust gas treatment function, comprising a fume hood body (1); A supporting foot (2) fixedly connected to the bottom of the fume hood body (1); and protective devices (3) fixedly mounted on the left and right sides of the fume hood body (1), the front side surface of the fume hood body (1) is provided with ventilation holes (11), characterized in that: An exhaust mechanism (4) is disposed on the top surface of the inner cavity of the fume hood body (1), and an exhaust gas treatment mechanism (5) is fixedly connected to the top surface of the exhaust mechanism (4). The exhaust mechanism (4) comprises an exhaust unit disposed on the top of the inner cavity of the fume hood body (1), and a filter unit is movably mounted on the lower surface of the exhaust unit. The exhaust gas treatment mechanism (5) comprises a purification unit fixedly mounted on the top of the fume hood body (1), and a flow guide unit is disposed inside the purification unit.

2. The acid-base fume hood with exhaust gas treatment function according to claim 1, characterized in that: The exhaust unit comprises an exhaust hood (41) arranged at the top of the inner cavity of the fume hood body (1), a mounting block (43) is fixedly mounted on the upper surface of the exhaust hood (41), and an electric push rod (44) is fixedly connected to the upper surface of the mounting block (43).

3. The acid-base fume hood with exhaust gas treatment function according to claim 2, characterized in that: The outer surface of the electric push rod (44) is movably connected to the inside of the fume hood body (1), and the top of the exhaust hood (41) is fixedly connected to an air supply pipe (45), and the top of the air supply pipe (45) is fixedly installed with an exhaust device (46), and the exhaust device (46) is located on the top of the fume hood body (1).

4. The acid-base fume hood with exhaust gas treatment function according to claim 3, characterized in that: The filter unit comprises a filter screen frame (42) movably mounted on the lower surface of the exhaust hood (41), positioning frames (421) are fixedly mounted on both sides of the filter screen frame (42), a positioning block (422) is clamped inside the positioning frame (421), and a connecting plate (423) is fixedly connected to one side surface of the positioning block (422).

5. The acid-base fume hood with exhaust gas treatment function according to claim 4, characterized in that: The connecting plate (423) is movably connected to a polished rod (424) inside, a compression spring (425) is sleeved on the outer surface of the polished rod (424), and both ends of the polished rod (424) are fixedly connected to a limiting plate (426), and the limiting plate (426) is fixedly installed on one side of the exhaust hood (41).

6. The acid-base fume hood with exhaust gas treatment function according to claim 3, characterized in that: The purification unit comprises a purification box (51) fixedly connected to the top of the exhaust device (46); a fixing plate (52) is fixedly connected to the inner wall surface of the purification box (51); a card slot is provided on one end surface of the fixing plate (52); a purification filter screen (53) is card-connected inside the card slot.

7. The acid-base fume hood with exhaust gas treatment function according to claim 6, characterized in that: The guide unit comprises an exhaust fan (54) fixedly mounted on the bottom of the inner cavity of the purification box (51); a sealing plate (55) is fixedly connected above the fixing plate (52); a guide strip (56) is fixedly mounted on the inner surface of the sealing plate (55); and an exhaust pipe (57) is fixedly connected to the top of the purification box (51).

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