CN107983123B - Air Filtration and Dust Removal Laboratory - Google Patents

Abstract

The invention relates to a laboratory, in particular to an air filtration and dedusting laboratory, which solves the problem of safe air intake and exhaust in the laboratory, including the laboratory, which is equipped with an inlet for filtering the air flowing into the laboratory A filter device and an outlet filter device for filtering out laboratory air, the inlet filter device at least includes a first filter tube, a second filter tube, a third filter tube and a fourth filter tube, the first filter tube, the second filter tube The second filter tube, the third filter tube and the fourth filter tube are assembled in turn, the second filter tube is provided with a Na ₂ CO ₃ filter element, the third filter tube is provided with NaOH solution, and the inlet filter device There is a CO ₂ sensor at the opening on the side of the room, the structure is simple, it is convenient to replace the filter element, and it also has the function of safe air intake and exhaust, low economic cost, and meets the standard specifications of modern laboratories.

Description

Air Filtration and Dust Removal Laboratory

technical field

The invention relates to a laboratory, in particular to an air filter and dust removal laboratory.

Background technique

Traditional laboratories use fume hoods to filter the air, but the fume hoods occupy too large an area, hindering the placement of other experimental instruments, high economic costs, inconvenient use, and lack of corresponding removal equipment Safe discharge of acid gases or other gases.

Contents of the invention

Aiming at the deficiencies of the existing technology, the invention provides an air filtration and dedusting laboratory.

In order to achieve the above object, the technical solution adopted by the present invention is: an air filter dust removal laboratory, including a laboratory, the laboratory is provided with an inlet filter device for filtering the air flowing into the laboratory and an outlet filter for filtering the air flowing out of the laboratory. device, the inlet filter device at least includes a first filter tube, a second filter tube, a third filter tube and a fourth filter tube, and the first filter tube, the second filter tube, the third filter tube and the fourth filter tube The filter tubes are assembled in turn, the second filter tube is provided with a Na ₂ CO ₃ filter element, the third filter tube is provided with NaOH solution, and the inlet filter device is provided with a CO ₂ sensor at the opening on the indoor side .

The third filter tube is provided with a flow chamber for containing NaOH solution, and the flow chamber is in a concave shape.

The cavity body of the flow chamber has a central portion, and the central portion extends symmetrically along the axis of the third filter tube to form a cleaning hole, and a glass cock is arranged at the cleaning hole.

A pull ring is arranged on the glass cock, and a rubber sealing ring is arranged at the pull ring.

The first filter tube, the second filter tube, the third filter tube and the fourth filter tube are connected and fixed by connecting parts.

The connecting part includes a chute and a slider, both of which are arc-shaped structures, and the chute and the slider are slidably matched along an arc-shaped path.

The chute is provided with a stopper that prevents the chute and the sliding block from being disengaged from each other in the axial direction.

The first filter tube is provided with a CaCl ₂ filter element, and the fourth filter tube is provided with an activated carbon filter element.

The outlet filtering device includes an exhaust pipe and a filter pool, the exhaust pipe and the filter pool are fixedly assembled, and NaOH solution is arranged in the filter pool.

The rotation of the first filter tube, the second filter tube, the third filter tube and the fourth filter tube is limited by a hoop, and the inner ring of the hoop is provided with a rubber layer.

Beneficial effects of the present invention: The air filtration and dedusting laboratory provided by the present invention has a simple structure, convenient replacement of filter elements, safe air intake and exhaust functions, low economic cost, and conforms to the standard specifications of modern laboratories.

Description of drawings

Fig. 1 is a schematic structural diagram of laboratory 1 of the present invention;

Fig. 2 is a schematic view of the structure of the inlet filtering device 2 of the present invention;

Fig. 3 is a schematic structural diagram of the third filter tube 6 of the present invention.

Detailed ways

As shown in Figures 1-3, the air filtration and dust removal laboratory includes a laboratory 1, and the laboratory 1 is provided with an inlet filter device 2 for filtering the air flowing into the laboratory 1 and an outlet filter for filtering the air flowing out of the laboratory 1 Device 3, the inlet filter device 2 at least includes a first filter tube 4, a second filter tube 5, a third filter tube 6 and a fourth filter tube 7, the first filter tube 4, the second filter tube 5 , the third filter tube 6 and the fourth filter tube 7 are movable in sequence, the second filter tube 5 is provided with a _Na2CO3 filter element 8, and the third filter tube 6 is provided with a NaOH _solution 9, so The inlet filter device 2 described above is provided with a _CO2 sensor 10 at the opening on one side of the room, and the NaOH solution 9 is used to filter the acid gas and CO2 gas flowing into the air, and when the NaOH solution ₉ solution is saturated, the acid gas and _Na2 The CO ₃ filter element 8 reacts to generate CO ₂ , which is detected by the CO ₂ sensor 10 . When the CO ₂ concentration is too high, it indicates the failure of the NaOH solution 9. The movable assembly between the filter tubes shows that the inlet filter device 2 is a split structure, which can be easily disassembled and replaced. The surface of the NaOH solution 9 is covered with an oil film to prevent excessive Chemical reaction and generation of bubbles.

Preferably, the third filter tube 6 is provided with a cavity body 11 for accommodating the NaOH solution 9, the cavity body 11 is in a concave shape, and the cavity body 11 is used to allow air to fully enter the NaOH solution 9 , while the concave shape has the function of a single entrance and exit.

Preferably, the flow chamber body 11 has a central portion 12, the central portion 12 extends symmetrically along the axis of the third filter tube 6 to form a cleaning hole 13, and the cleaning hole 13 is provided with a glass stopper 14, The NaOH solution 9 has the characteristics of difficult cleaning, and because of the structural characteristics of the flow chamber cavity 11, some corners are difficult to clean, so the cleaning hole 13 is set, and the glass cock 14 is used for sealing at the same time. The glass cock 14 has stable properties of corrosion resistance. At the same time, the effect of labyrinth sealing is achieved through threads. Labyrinth sealing is a common sense known to those skilled in the art, even if the fluid passes through a tortuous path to reduce the flow of runoff and achieve the effect of throttling or sealing.

Preferably, the glass cock 14 is provided with a pull ring 15, and the pull ring 15 is provided with a rubber sealing ring 16, through the pull ring 15, the glass plug is conveniently rotated to open the cleaning hole 13, and the rubber sealing ring 16 arranged on the outside The effect of sealing and fixing the glass cock 14 is further achieved.

Preferably, the first filter tube 4, the second filter tube 5, the third filter tube 6 and the fourth filter tube 7 are connected and fixed through the connection part 17. connection structure.

Preferably, the connecting part 17 includes a chute 18 and a slider 19, the chute 18 and the slider 19 are both arc-shaped structures, and the chute 18 and the slider 19 are slidably fitted along an arc-shaped path The structure of the chute 18 and the slider 19 limits the linear displacement and deviation in the radial direction when the two cooperate, and the chute 18 and the slider 19 can only produce relative motion through rotation.

Preferably, the chute 18 has a stopper 20 that prevents the chute 18 from disengaging from the chute 18, and the stopper 20 limits the linear displacement of the chute 18 and the slider 19 in the axial direction of the filter tube, That is to prevent the chute 18 and the sliding block 19 from being disengaged from each other in the axial direction, the setting of the blocking portion 20 indicates that the chute 18 is a semi-open structure, and the blocked part is the blocking portion 20 .

Preferably, the first filter tube 4 is provided with a _CaCl2 filter element 21, and the fourth filter tube 7 is provided with an activated carbon filter element 22, and the _CaCl2 filter element 21 is used to absorb the remaining moisture and the moisture generated by the chemical reaction .

Preferably, the outlet filter device 3 includes an exhaust pipe 23 and a filter tank 24, the exhaust pipe 23 and the filter tank 24 are fixedly assembled, and the NaOH solution 9 is provided in the filter tank 24, and the laboratory 1 When the air is discharged outside, the acid gas and chemically active gas are fully absorbed through the filter pool 24.

Preferably, the rotation of the first filter tube 4, the second filter tube 5, the third filter tube 6 and the fourth filter tube 7 is limited by a hoop, and the inner ring of the hoop is provided with a rubber layer, and the inner ring of the hoop is provided with a rubber layer. The ring hoop and the rubber layer achieve the effect of sealing and fixing, and the ring hoop is a mature product in the prior art, so it will not be elaborated and limited here.

In addition, the intake and exhaust of air are both controlled by the exhaust fan to control the runoff of the gas flow. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying References to devices or elements must have a particular orientation, be constructed, and operate in a particular orientation and therefore should not be construed as limiting the invention.

Beneficial effects of the present invention: The air filtration and dedusting laboratory provided by the present invention has a simple structure, convenient replacement of filter elements, safe air intake and exhaust functions, low economic cost, and conforms to the standard specifications of modern laboratories.

Claims (5)

1. Air filtration and dedusting laboratory, including laboratory, is characterized in that, described laboratory is provided with the inlet filter device that filters the air that flows into the laboratory and the outlet filter device that filters the air that flows out of the laboratory, and the described inlet filter device At least including a first filter tube, a second filter tube, a third filter tube and a fourth filter tube, the first filter tube, the second filter tube, the third filter tube and the fourth filter tube are movably assembled in sequence, and the The second filter tube is provided with a Na ₂ CO ₃ filter element, the third filter tube is provided with NaOH solution, and the inlet filter device is provided with a CO ₂ sensor at the opening on the side of the chamber, The third filter tube is provided with a flow chamber cavity for containing NaOH solution, and the flow chamber cavity is in a concave shape, The cavity body of the flow chamber has a central part, and the central part extends symmetrically along the axis of the third filter tube to form a cleaning hole, and a glass cock is arranged at the cleaning hole, The glass cock is provided with a pull ring, and the pull ring is provided with a rubber sealing ring, The first filter tube, the second filter tube, the third filter tube and the fourth filter tube are connected and fixed by connecting parts, The connecting part includes a chute and a slider, the chute and the slider are both arc-shaped structures, and the chute and the slider are slidably fitted along an arc-shaped path, The first filter tube is provided with a CaCl ₂ filter element, and the fourth filter tube is provided with an activated carbon filter element. 2. The air filtration and dust removal laboratory according to claim 1, characterized in that, the chute is provided with a blocking part that prevents the chute and the sliding block from being separated from each other in the axial direction. 3. The air filtration and dedusting laboratory as claimed in claim 1 or 2, wherein said outlet filter device comprises an exhaust pipe and a filter tank, said exhaust pipe and filter tank are fixedly assembled, said A NaOH solution is provided in the filter pool. 4. The air filtration and dedusting laboratory as claimed in claim 1 or 2, wherein the rotation is restricted by a hoop between the first filter tube, the second filter tube, the third filter tube and the fourth filter tube , the inner ring of the hoop is provided with a rubber layer. 5. The air filtration and dedusting laboratory as claimed in claim 3, wherein the rotation is limited by a hoop between the first filter tube, the second filter tube, the third filter tube and the fourth filter tube, and the The inner ring of the hoop is provided with a rubber layer.

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