CN118045458A - Purification device and purification method for removing formaldehyde - Google Patents

Abstract

The invention relates to the technical field of formaldehyde purification, in particular to a purification device for removing formaldehyde, which comprises a box body with an opening at the bottom and an air draft mechanism; the air suction mechanism comprises an air pump and an air inlet arranged on the box body; the air pump is fixedly connected with the box body, and the output port of the air pump is communicated with the air inlet; the device also comprises an adsorption mechanism; the adsorption mechanism comprises an annular conduit with an opening at the top and a plurality of adsorption components; the annular conduit is fixedly connected with the top of the box body; the adsorption component comprises a purification plate, a side hole formed in the annular duct and a driving part for driving the purification plate to do intermittent reciprocating motion along the radial direction of the annular duct; the purification plate can do reciprocating motion in the side hole; the cleaning part is positioned in the inner circle of the annular conduit; the cleaning part comprises a vertical block and a brushing layer; the vertical block is connected with the outer wall of the annular duct; the brush hair layer is fixedly connected with the vertical block. In order to solve the problem that the existing purification device can not clean dust particles adhered on the formaldehyde purification plate during the process of purifying formaldehyde by the formaldehyde purification plate.

Description

Purification device and purification method for removing formaldehyde

Technical Field

The invention relates to the technical field of formaldehyde purification, in particular to a purification device and a purification method for removing formaldehyde.

Background

The formaldehyde purification device is used for removing formaldehyde, and the formaldehyde purification adsorbent is an adsorption material which is mainly used for adsorbing formaldehyde in household life. Mainly contains active silicon, active carbon and active alumina, formaldehyde is also called formaldehyde, colorless gas and pungent smell, and has the function of stimulating eyes, nose and the like. Most of the existing formaldehyde purification devices used indoors are inconvenient to disassemble and assemble the formaldehyde purification plates, so that the replacement of the formaldehyde purification plates is time-consuming; it is therefore necessary to propose a formaldehyde purification device for indoor use to solve this problem.

For solving the above-mentioned problem, chinese patent with publication No. CN218687911U discloses a formaldehyde purification device for indoor, and it includes casing, suction fan and formaldehyde purification board, suction fan fixed mounting is on the bottom inner wall of casing, has seted up the standing groove on the bottom inner wall of casing, and the outside activity joint of formaldehyde purification board is in the standing groove, the top fixed mounting of formaldehyde purification board has the connecting plate, and the top fixed mounting of connecting plate has the baffle, and the equal fixed mounting in bottom both sides of baffle has the locating plate. The device realizes the quick installation and disassembly work of the formaldehyde purification plate through the butt cooperation of butt plate and baffle to the new formaldehyde purification plate of being convenient for change, simple operation, the reliability is high.

The device has the following problems in the actual use process: the device needs the workman regularly dismantle the formaldehyde purification board and take off, come to clear up the dust granule of adhesion on the formaldehyde purification board, in order to guarantee that the formaldehyde purification board can not take place to block up, but only through once clearance formaldehyde purification board, still can remain partial dust granule on the formaldehyde purification board, on the one hand influence the reuse of formaldehyde purification board, on the other hand reduced the filtration efficiency of formaldehyde purification board, but if the workman clear up the formaldehyde purification board many times, then can increase workman's work load, the work is loaded down with trivial details, even lead to the incomplete that the formaldehyde purification board can clear up, thereby influence the reuse of formaldehyde purification board; 2. when dismantling formaldehyde purification board, because formaldehyde purification board can take place to shake, consequently, at the in-process of dismantling, partial dust granule can be absorbed by the workman, and then causes the injury to workman's healthy, exists certain potential safety hazard promptly.

Disclosure of Invention

The invention provides a purifying device for removing formaldehyde, which solves the problem that the existing purifying device cannot clean dust particles adhered on a formaldehyde purifying plate during the process of purifying formaldehyde by the formaldehyde purifying plate.

In order to achieve the above purpose, the invention adopts the following technical scheme: a purifying device for removing formaldehyde comprises a box body with an opening at the bottom and an air draft mechanism; the air suction mechanism comprises an air pump and an air inlet arranged on the box body; the air pump is fixedly connected with the box body, and the output port of the air pump is communicated with the air inlet; the adsorption mechanism is arranged in the box body; the adsorption mechanism comprises an annular conduit with an opening at the top and a plurality of adsorption components; the annular guide pipe is fixedly connected with the top of the box body, and the top of the annular guide pipe is communicated with the air inlet; the adsorption component comprises a side hole formed in the annular duct, a purification plate for sealing the side hole, cleaning parts symmetrically arranged on two sides of the purification plate along the length direction of the purification plate, and a driving part for driving the purification plate to do intermittent reciprocating motion along the radial direction of the annular duct; one end of the purifying plate is attached to the inner wall of the annular duct, and the other end of the purifying plate penetrates through the side hole and stretches into the inner circle of the annular duct, and the purifying plate can do reciprocating motion in the side hole; the cleaning part is positioned in the inner circle of the annular conduit; the cleaning part comprises a vertical block and a brushing layer; the vertical block is connected with the outer wall of the annular duct; the brush hair layer is fixedly connected with the vertical block, and one end of the brush hair layer, which is far away from the vertical block, is attached to the purifying plate.

The principle and the advantages of the scheme are as follows:

1. The air flows into the annular duct along the air inlet through the air pump, so that the air can flow along the circumferential direction of the annular duct; during the gas flowing period, formaldehyde contained in the gas can be adsorbed by the purifying plate, so that the component of the formaldehyde contained in the gas is reduced, namely, the purification of the formaldehyde in the gas is realized, and the pollution to the environment and the harm to the human body are avoided when the gas is discharged again.

During the gas flow, formaldehyde in the gas is adsorbed through a plurality of purification plates simultaneously, so that on one hand, the adsorption speed of formaldehyde in the gas can be increased, the adsorption efficiency of formaldehyde in the gas is improved, on the other hand, the formaldehyde contained in the gas can be further ensured to be more complete and more sufficient to be adsorbed, and the quality of the gas when being discharged from the box body is improved.

2. When the gas flows in the annular duct, the driving part drives the purifying plate to do intermittent reciprocating motion along the radial direction of the annular duct, and when the purifying plate moves in the direction away from the annular duct until the purifying plate is no longer attached to the side hole, the gas moves into the box body along the side hole; when the purifying plate moves in the direction of approaching the annular duct until the purifying plate is attached to the side hole again, the gas continues to move along the circumferential direction of the annular duct, and the gas cannot be discharged.

Through the motion, on the one hand, the gas moving in the annular duct can be discharged from the edge hole automatically after being purified by the purifying plate, no manual operation is needed, unnecessary trouble in the work of workers is saved, and on the other hand, the purifying plate intermittently reciprocates along the radial direction of the annular duct, so that the gas can stay in the annular duct for a longer time, the moving path is longer, and the formaldehyde in the gas is guaranteed to be removed by the purifying plate.

3. During the reciprocating motion of the purifying plate along the radial direction of the annular conduit, the bristle layer reciprocates relative to the length direction of the purifying plate; and because the brush hair layer still pastes mutually with the purification board, consequently the brush hair layer can clear up dust and other impurity of purification board length direction arbitrary department adhesion on the purification board for dust and other impurity can no longer adhere on the purification board, have guaranteed the purification ability of purification board can not reduce because of dust and other impurity, have strengthened the purifying effect of purification board promptly, have improved the efficiency of purification board.

And because the brush hair layer is the symmetry setting in the purification board both sides, consequently, the brush hair layer can clear up the purification board from two directions, has enlarged the scope of action of brush hair layer, has further guaranteed that dust and other impurity of purification board surface optional position department all can be acted on by the brush hair layer, has guaranteed promptly that the purification board is in efficient purification state constantly.

Further, the vertical block is in sliding connection with the outer wall of the annular duct; the cleaning part also comprises a linkage block and a first spring; the linkage block is fixedly connected with the vertical block; two ends of the first spring are respectively connected with the vertical block and the annular guide pipe; the adsorption component also comprises a linkage part; the linkage part comprises a short shaft, a first cam and a linkage unit for driving the short shaft to rotate; the first cam is fixedly connected with the short shaft and is propped against the linkage block.

The short shaft is driven to rotate through the linkage unit, and the first cam synchronously moves during the rotation of the short shaft; during the rotation of the first cam, when the protruding part of the first cam is propped against the linkage block, the linkage block moves vertically downwards, the vertical block moves synchronously, and the first spring is compressed; when the protruding part of the first cam is not propped against the linkage block any more, the vertical block is reset under the action of the first spring, the vertical block moves vertically upwards, and the linkage block moves synchronously; thus, the vertical block is capable of vertical reciprocation.

The brushing layers synchronously move during the vertical reciprocating motion of the vertical blocks; during the vertical reciprocating motion of the bristle layer, on one hand, the bristle layer has a certain acting force, so that dust and other impurities adhered to the purification plate can be cleaned more quickly by the bristle layer, and the cleaning effect of the bristle layer on the purification plate is further enhanced; on the other hand, the brush hair layer can also clear up the dust and other impurity of purification board direction of height optional position department, has further enlarged the scope of action of brush hair layer for the dust and other impurity of purification board direction of height optional position department no longer adhere on the purification board, has further improved the purification efficiency of purification board promptly.

In summary, through the brush hair layer for the motion of purification board length direction to and the vertical reciprocating motion of brush hair layer, can clear up dust and other impurity of purification board surface optional position department, guaranteed to purify the board promptly and be in efficient operating condition constantly.

Further, a decontamination assembly is included; the purifying component comprises a cylindrical box with an opening at the top and a purifying part arranged in the cylindrical box; the cylindrical box is fixedly connected with the bottom of the annular conduit; the purifying part comprises a rotating shaft, a plurality of purifying units and a power unit for driving the rotating shaft; the rotating shaft is rotationally connected with the cylindrical box; the purifying unit comprises an auxiliary block, a piston cylinder, a purifying box, a piston block and a driving piece for driving the piston block to reciprocate along the length direction of the piston cylinder; the auxiliary block is fixedly connected with the rotating shaft; the piston cylinder and the purifying box are fixedly connected with the auxiliary block; the piston block is connected with the piston cylinder in a sliding way; the piston cylinder is communicated with a liquid inlet pipe and a liquid outlet pipe; the liquid inlet pipe is communicated with the purifying box; an atomization nozzle is arranged at one end of the liquid discharge pipe far away from the piston cylinder; and an exhaust part for intermittently exhausting the gas in the cylindrical tank.

The driving piece drives the piston block to reciprocate along the length direction of the piston cylinder, and the piston block can continuously extract liquid and discharge liquid; when the piston block moves in the direction close to the liquid inlet pipe, the piston block extracts liquid, and the purifying liquid flows into the piston cylinder along the liquid inlet pipe; when the piston block moves in the direction away from the liquid inlet pipe, the piston block discharges liquid, and the purifying liquid is discharged along the liquid discharge pipe, so that the purifying liquid is mixed with the gas in the cylindrical tank; during the mixing period of the purifying liquid and the gas, the purifying liquid can adsorb formaldehyde contained in the gas, further reduce formaldehyde component contained in the gas, further ensure that the gas is discharged from the box body without pollution to the environment and harm to human body.

During the mixing period of the purifying liquid and the gas, the power unit drives the rotating shaft to rotate; the auxiliary block moves synchronously during the rotation of the rotating shaft; during the movement of the auxiliary block, the piston cylinder and the purifying box synchronously move, namely, the piston cylinder and the purifying box can do circumferential movement along the circumferential direction of the cylindrical box; during the circumferential movement of the piston cylinder, the purifying liquid can comprehensively clean the gas in the circumferential direction in the cylindrical box, so that the acting range of the purifying liquid is enlarged, and the gas in the cylindrical box can be further fully treated by the purifying liquid.

During the period that purifying liquid handled the gas in the cylindricality case, through the intermittent gas discharge in the cylindricality case of exhaust portion, on the one hand can prolong the time that gas detained in the cylindricality incasement, guaranteed that formaldehyde in the gas can be handled by purifying liquid more comprehensively, on the other hand need not the manual work and carries out switching to the cylindricality case, saved unnecessary trouble in the workman's work, improved the practicality of this device.

The atomizing nozzle is arranged to enlarge the contact area of the purifying liquid and the gas, so that the purifying liquid can be contacted with more gas, and the formaldehyde contained in the gas can be thoroughly treated.

Further, the stirring device also comprises a stirring unit arranged on the auxiliary block; the stirring unit comprises a unidirectional screw, a guide rod, a nut seat, a stirring block and a moving part for driving the unidirectional screw to rotate; the unidirectional screw is rotationally connected with the auxiliary block; the guide rod is fixedly connected with the auxiliary block; the nut seat is in threaded connection with the unidirectional screw rod, and is in sliding connection with the guide rod; the stirring block is fixedly connected with the nut seat.

During the circumferential movement of the auxiliary block along the circumferential direction of the cylindrical box, the stirring block synchronously moves; during the stirring block movement, the stirring block can fully stir the gas and the purifying liquid, so that the gas and the purifying liquid are mixed more fully and uniformly, the purifying liquid is ensured to react with formaldehyde in the gas as much as possible, the effect of the purifying liquid is enhanced, the utilization rate of the purifying liquid is improved, and the formaldehyde in the gas is further ensured to be removed as much as possible.

During the movement of the auxiliary block, the movement piece drives the unidirectional screw rod to rotate forwards and reversely; during the forward rotation of the unidirectional screw, the nut seat vertically moves downwards along the length direction of the guide rod, and the stirring block synchronously moves; during the reverse rotation of the unidirectional screw, the nut seat vertically moves upwards along the length direction of the guide rod, and the stirring block synchronously moves; therefore, the stirring block can do vertical reciprocating motion along the height direction of the cylindrical box, namely, the stirring block can do vertical reciprocating motion while doing circumferential motion along the circumferential direction of the cylindrical box.

During the vertical reciprocating motion of the stirring block, the action range of the stirring block can be enlarged, the action effect of the stirring block is enhanced, the stirring block can stir gas and purifying liquid at any position in the height direction of the column-shaped box, the gas and the purifying liquid are mixed more comprehensively and thoroughly, formaldehyde in the gas is further guaranteed to be removed under the action of the purifying liquid, and the action efficiency of the purifying liquid is improved.

In conclusion, through the circumferential movement of the stirring block along the circumferential direction of the cylindrical box and the vertical movement of the stirring block along the height direction of the cylindrical box, all gases and purifying liquid in the cylindrical box can be stirred, so that formaldehyde in the gases can be completely removed, and no harm to human bodies and no pollution to the environment after the gases are discharged are ensured.

Further, a round hole is formed in the bottom of the cylindrical box; the exhaust part comprises a disc, an annular block and exhaust units symmetrically arranged at two sides of the disc along the diameter direction of the disc; the disc is positioned in the round hole, the disc is fixedly connected with the box body, the diameter of the disc is smaller than that of the round hole, and a gap between the disc and the round hole forms an annular hole; the annular block is positioned in the annular hole, is attached to the annular hole and can vertically move in the annular hole; the exhaust unit comprises a supporting block, a connecting block and a second spring; the supporting block is fixedly connected with the disc; one end of the connecting block is fixedly connected with the annular block, and the other end of the connecting block is in sliding connection with the supporting block; two ends of the second spring are respectively connected with the supporting block and the connecting block; the nut seat is fixedly connected with a push block, and the annular block is positioned on the motion track of the push block.

During the vertical reciprocating motion of the nut seat, the pushing blocks synchronously move; during the vertical downward movement of the pushing block, when the pushing block is in contact with the annular block, the annular block vertically moves downward under the action of the pushing block, the second spring stretches until the annular block is no longer attached to the annular hole, and gas is discharged from the cylindrical box along the annular hole, so that the gas in the cylindrical box is discharged; during the vertical upward movement of the pushing block, the pushing block is not contacted with the annular block, the annular block is reset under the action of the second spring, the annular block vertically moves upward until the annular block is attached to the annular hole again, and gas cannot be discharged from the cylindrical box along the annular hole; the pushing block is intermittently contacted with the annular block, so that the intermittent discharge of the gas from the cylindrical box is realized, and the gas in the cylindrical box is ensured to have enough time to react with the purifying liquid, so that the formaldehyde in the gas is ensured to be completely removed.

Further, the device also comprises an arc-shaped rack; the arc-shaped rack is fixedly connected with the rotating shaft; the driving part comprises a fixed block, a linkage shaft, a first gear, a second cam and a third spring; the fixed block is positioned in the inner circle of the annular duct, the fixed block is fixedly connected with the outer wall of the annular duct, and the purifying plate is in sliding connection with the fixed block; the linkage shaft is rotationally connected with the annular conduit; the first gear and the second cam are fixedly connected with the linkage shaft; the first gear is positioned on the motion track of the arc-shaped rack, and the arc-shaped rack can be meshed with the first gear; the second cam is propped against the purifying plate, and two ends of the third spring are respectively connected with the purifying plate and the fixed block.

During the rotation of the rotating shaft, the rotating shaft drives the arc-shaped rack to synchronously move; during the rotation of the arc-shaped rack, when the arc-shaped rack is meshed with the first gear, the first gear rotates; during the rotation of the first gear, the linkage shaft synchronously rotates; the second cam rotates synchronously during the rotation of the linkage shaft; during rotation of the second cam, when the second cam abuts against the purifying plate, the purifying plate moves in the radial direction of the annular duct in a direction away from the annular duct, the third spring is compressed, and during the period, gas moves into the cylindrical box along the side hole; when the second cam is not propped against the purifying plate any more, the purifying plate is reset under the action of the third spring, the purifying plate moves along the direction where the radial direction box of the annular duct is close to the annular duct, and during the period, the gas moves along the circumferential direction of the annular duct and cannot be discharged into the cylindrical box from the side hole; thus, the purge plate is capable of reciprocating in the radial direction of the annular duct.

Further, a first bevel gear is fixedly connected on the rotating shaft; the linkage unit is a second bevel gear; the short shaft is rotationally connected with the fixed block, the second bevel gear is fixedly connected with the short shaft, and the first bevel gear is meshed with the second bevel gear.

The first bevel gear moves synchronously during the rotation of the rotating shaft; during the rotation of the first bevel gear, the second bevel gear rotates due to the engagement of the first bevel gear and the second bevel gear; during rotation of the second bevel gear, the stub shafts rotate in synchronism.

Further, the device also comprises an annular rack; the annular rack is fixedly connected with the cylindrical box; the moving part is a second gear; the second gear is fixedly connected with the unidirectional screw rod and meshed with the annular rack.

The second gear synchronously moves during the circumferential movement of the unidirectional screw rod along the circumferential direction of the cylindrical box; during the movement of the second gear, the second gear is meshed with the annular rack, so that the second gear rotates, namely, the second gear can rotate while doing circumferential movement along the circumferential direction of the cylindrical box; during the rotation of the second gear, the unidirectional screw rod synchronously rotates, namely, the unidirectional screw rod can rotate while doing circumferential movement along the circumferential direction of the cylindrical box.

Further, the driving piece comprises a third cam and a fourth spring; the third cam is fixedly connected with the unidirectional screw rod and is propped against the piston block; and two ends of the fourth spring are respectively connected with the piston cylinder and the piston block.

The third cam rotates synchronously during the rotation of the unidirectional screw; during the rotation of the third cam, when the protruding part of the third cam is propped against the piston block, the piston block moves along the length direction of the piston cylinder in the direction close to the liquid discharge pipe, and the fourth spring is compressed; when the protruding part of the third cam is not propped against the piston block any more, the piston block is reset under the action of the fourth spring, and the piston block moves along the length direction of the piston cylinder in a direction away from the liquid discharge pipe; thus, the piston block can reciprocate along the length of the piston cylinder.

The invention aims to provide a formaldehyde removal purification method to solve the problem that the existing purification device cannot clean dust particles adhered to a formaldehyde purification plate during the process of purifying formaldehyde by the formaldehyde purification plate.

In order to achieve the above purpose, the invention adopts the following technical scheme: a formaldehyde removal purification method comprising the steps of:

step (1): introducing gas into the annular duct by an air pump;

Step (2): during the process of gas flowing in the annular duct, the purifying plate intermittently reciprocates along the radial direction of the annular duct, so that the gas can enter the cylindrical box;

step (3): the brush hair layer can clean the purifying plate through the reciprocating motion of the brush hair layer relative to the length direction of the purifying plate and the vertical reciprocating motion of the brush hair layer;

step (4): the purifying liquid can comprehensively treat the gas in the cylindrical box through the circumferential movement of the piston cylinder along the circumferential direction of the cylindrical box and the reciprocating movement of the piston block along the length direction of the piston cylinder;

Step (5): the purifying liquid and the gas in the cylindrical tank are mixed more fully and more uniformly through the circumferential movement of the stirring block along the circumferential direction of the cylindrical tank and the reciprocating movement of the stirring block along the depth direction of the cylindrical tank;

step (6): the gas in the cylindrical box can be intermittently discharged from the cylindrical box through intermittent contact of the pushing block and the annular block, so that the gas has enough time to contact with the purifying liquid.

The principle and the advantages of the scheme are as follows:

1. The gas is introduced into the annular duct through the air pump, and the intermittent reciprocating motion of the purifying plate can enable the gas moving in the annular duct to be discharged along the edge holes automatically after being purified by the purifying plate, manual operation is not needed, unnecessary troubles in the work of workers are saved, and on the other hand, the purifying plate intermittently reciprocates along the radial direction of the annular duct, so that the gas can stay in the annular duct for a longer time, the moving path is longer, and formaldehyde in the gas is guaranteed to be completely removed by the purifying plate.

2. Through the brush hair layer for purifying plate length direction's motion to and the vertical reciprocating motion of brush hair layer, can clear up dust and other impurity of purifying plate surface optional position department, guaranteed promptly that purifying plate is in efficient operating condition constantly.

3. Through the circumferential motion of the piston cylinder along the circumferential direction of the cylindrical box and the reciprocating motion of the piston block along the length direction of the piston cylinder, the purifying liquid can comprehensively clean the gas in the circumferential direction in the cylindrical box, the action range of the purifying liquid is enlarged, and the gas in the cylindrical box can be further ensured to be treated more fully by the purifying liquid.

4. Through the circumferential motion of stirring piece along cylindricality case circumferencial direction to and the vertical motion of stirring piece along cylindricality case direction of height, can stir all gases and purifying liquid in the cylindricality case, guaranteed that formaldehyde in the gas can be completely removed, and then guaranteed that the gas is discharged back and to the human body harmless, pollution-free to the environment.

5. The pushing block is intermittently contacted with the annular block, so that the intermittent discharge of the gas from the cylindrical box is realized, and the gas in the cylindrical box is ensured to have enough time to react with the purifying liquid, so that the formaldehyde in the gas is ensured to be completely removed.

Drawings

FIG. 1 is a schematic diagram of the structure of a box of an embodiment of a purifying apparatus for formaldehyde removal according to the present invention.

Fig. 2 is a sectional view of the case of fig. 1 in a front view.

Fig. 3 is a sectional view of the cylindrical box of fig. 2 in a front view.

Fig. 4 is an enlarged view at a in fig. 3.

Fig. 5 is an enlarged view at B in fig. 3.

Fig. 6 is a schematic structural view of the adsorption mechanism in fig. 2.

Fig. 7 is an enlarged view at C in fig. 6.

Fig. 8 is a schematic view of the structure of the purifying part in the cylindrical tank in fig. 6.

Fig. 9 is an enlarged view of D in fig. 8.

Detailed Description

The following is a further detailed description of the embodiments:

Reference numerals in the drawings of the specification include: the cleaning device comprises a box body 1, an air pump 2, an annular guide tube 3, a cleaning plate 4, a vertical block 5, a bristle layer 6, a linkage block 7, a first spring 8, a short shaft 9, a first cam 10, a cylindrical box 11, a rotating shaft 12, an auxiliary block 13, a piston cylinder 14, a cleaning box 15, a piston block 16, a unidirectional screw 17, a guide rod 18, a nut seat 19, a stirring block 20, an annular block 21, a second spring 22, an annular hole 23, a push block 24, an arc-shaped rack 25, a linkage shaft 26, a first gear 27, a second cam 28, a third spring 29, a first bevel gear 30, a second bevel gear 31, an annular rack 32, a second gear 33, a third cam 34, a fourth spring 35, a servo motor 36, a connecting block 37, a supporting block 38, a disc 39 and a fixed block 40.

Examples are substantially as shown in figures 1,2,3, 4, 5, 6, 7, 8, 9:

The embodiment of the invention provides a purifying device for removing formaldehyde, which comprises a box body 1 with an opening at the bottom and an air draft mechanism; the air suction mechanism comprises an air pump 2 and an air inlet arranged on the box body 1; the air pump 2 is fixedly connected with the box body 1, the output port of the air pump 2 is communicated with the air inlet, and the input port of the air pump 2 is communicated with the induced draft cover: the device also comprises an adsorption mechanism arranged in the box body 1; the adsorption mechanism comprises an annular conduit 3 with an opening at the top and a plurality of adsorption components; the annular conduit 3 is fixedly connected with the top of the inner wall of the box body 1, and the top of the annular conduit 3 is communicated with the air inlet; the adsorption assemblies are equidistantly arranged along the circumferential direction of the annular duct 3; the adsorption component comprises a side hole formed in the annular duct 3, a purification plate 4 for sealing the side hole, cleaning parts symmetrically arranged on two sides of the purification plate 4 along the length direction of the purification plate 4, and a driving part for driving the purification plate 4 to do intermittent reciprocating motion along the radial direction of the annular duct 3; one end of the purifying plate 4 is attached to the inner wall of the annular duct 3, the other end of the purifying plate 4 passes through the side hole and stretches into the inner circle of the annular duct 3, and the purifying plate 4 can do reciprocating motion in the side hole; the cleaning part is positioned in the inner circle of the annular conduit 3; the cleaning part comprises a vertical block 5 and a bristle layer 6; the vertical block 5 is connected with the outer wall of the annular duct 3; the bristle layer 6 comprises a plurality of bristle blocks; the brush hair pieces are equidistantly arranged along the length direction of the vertical block 5, the brush hair pieces are fixedly connected with the vertical block 5, and one end, far away from the vertical block 5, of each brush hair piece is attached to the purifying plate 4.

The vertical block 5 is in sliding connection with the outer wall of the annular duct 3; the cleaning part also comprises a linkage block 7 and a first spring 8; the linkage block 7 is fixedly connected with the vertical block 5; two ends of the first spring 8 are respectively connected with the vertical block 5 and the annular conduit 3; the adsorption component also comprises a linkage part; the linkage part comprises a short shaft 9, a first cam 10 and a linkage unit for driving the short shaft 9 to rotate; the first cam 10 is fixedly connected with the short shaft 9, the first cam 10 is positioned above the linkage block 7, and the first cam 10 is propped against the linkage block 7.

The device also comprises a purifying component; the purifying component comprises a cylindrical box 11 with an open top and a purifying part arranged in the cylindrical box 11; the cylindrical box 11 is fixedly connected with the bottom of the annular conduit 3; the purifying part comprises a rotating shaft 12, a disc 39, a plurality of purifying units and a power unit for driving the rotating shaft 12; the rotating shaft 12 is rotationally connected with the cylindrical box 11; the disc 39 is fixedly connected with the rotating shaft 12; a plurality of purifying units are equidistantly arranged along the circumferential direction of the disc 39; the purifying unit comprises an auxiliary block 13, a piston cylinder 14, a purifying box 15, a piston block 16 and a driving piece for driving the piston block 16 to reciprocate along the length direction of the piston cylinder 14; the auxiliary block 13 is fixedly connected with the disc 39; the piston cylinder 14 and the purifying box 15 are fixedly connected with the auxiliary block 13, the purifying box 15 is positioned above the piston cylinder 14, and the auxiliary block 13 is positioned between the piston cylinder 14 and the purifying box 15; the piston block 16 is in sliding connection with the piston cylinder 14; the piston cylinder 14 is communicated with a liquid inlet pipe and a liquid outlet pipe; the liquid inlet pipe is communicated with the purifying box 15; an atomization nozzle is arranged at one end of the liquid discharge pipe far away from the piston cylinder 14; the liquid inlet pipe is provided with a first one-way valve for liquid to flow from the inside of the purifying box 15 to the piston cylinder 14 in one direction; the liquid discharge pipe is provided with a second one-way valve for liquid to flow from the inner side of the piston cylinder 14 to the cylindrical box 11 in one way; and also includes an exhaust portion for intermittently exhausting the gas in the cylindrical tank 11.

Further comprises a stirring unit arranged on the auxiliary block 13; the stirring unit comprises a unidirectional screw 17, a guide rod 18, a nut seat 19, a stirring block 20 and a moving piece for driving the unidirectional screw 17 to rotate; the unidirectional screw 17 is rotationally connected with the auxiliary block 13; the guide rod 18 is fixedly connected with the auxiliary block 13; the nut seat 19 is in threaded connection with the unidirectional screw 17, and the nut seat 19 is in sliding connection with the guide rod 18; the stirring block 20 is fixedly connected with the nut seat 19.

A round hole is formed in the bottom of the cylindrical box 11; the exhaust part comprises a disc 39, an annular block 21 and exhaust units symmetrically arranged on two sides of the disc 39 along the diameter direction of the disc 39; the disc 39 is positioned in the round hole, the disc 39 is fixedly connected with the box body 1, the diameter of the disc 39 is smaller than that of the round hole, and a gap between the disc 39 and the round hole forms an annular hole 23; the annular block 21 is positioned in the annular hole 23, the annular block 21 is attached to the annular hole 23, and the annular block 21 can vertically move in the annular hole 23; the exhaust unit comprises a support block 38, a connecting block 37 and a second spring 22; the supporting block 38 is fixedly connected with the bottom of the disc 39; one end of the connecting block 37 is fixedly connected with the annular block 21, and the other end of the connecting block 37 is in sliding connection with the supporting block 38; the two ends of the second spring 22 are respectively connected with a supporting block 38 and a connecting block 37; the nut seat 19 is fixedly connected with a push block 24, and the annular block 21 is positioned on the motion track of the push block 24.

The power unit selects a servo motor 36, the servo motor 36 is fixedly connected with a disc 39, and an output shaft of the servo motor 36 is fixedly connected with the rotating shaft 12.

Also comprises an arc-shaped rack 25; the arc-shaped rack 25 is fixedly connected with the rotating shaft 12; the driving part comprises a fixed block 40, a linkage shaft 26, a first gear 27, a second cam 28 and a third spring 29; the fixed block 40 is positioned in the inner circle of the annular duct 3, the fixed block 40 is fixedly connected with the outer wall of the annular duct 3, and the purification plate 4 is in sliding connection with the fixed block 40; the linkage shaft 26 is rotationally connected with the annular conduit 3; the first gear 27 and the second cam 28 are fixedly connected with the linkage shaft 26, and the second cam 28 is positioned above the first gear 27; the first gear 27 is located on the motion track of the arc-shaped rack 25, and the arc-shaped rack 25 can be meshed with the first gear 27; the second cam 28 is propped against the purifying plate 4, and two ends of the third spring 29 are respectively connected with the purifying plate 4 and the fixed block 40.

A first bevel gear 30 is fixedly connected to the rotating shaft 12; the linkage unit is a second bevel gear 31; the short shaft 9 is rotatably connected with the fixed block 40, the second bevel gear 31 is fixedly connected with the short shaft 9, and the first bevel gear 30 is meshed with the second bevel gear 31.

Also included is an annular rack 32; the annular rack 32 is positioned below the annular guide pipe 3, and the annular rack 32 is fixedly connected with the cylindrical box 11; the moving part is a second gear 33; the second gear 33 is fixedly connected with the unidirectional screw 17, and the second gear 33 is meshed with the annular rack 32.

The driving piece comprises a third cam 34 and a fourth spring 35; the third cam 34 is fixedly connected with the unidirectional screw 17, and the third cam 34 is propped against the piston block 16; the fourth spring 35 is sleeved on the piston block 16, and two ends of the fourth spring 35 are respectively connected with the piston cylinder 14 and the piston block 16.

The specific implementation process is as follows:

The air flows into the annular duct 3 through the air inlet along the induced air cover by the air pump 2, so that the air can flow in the annular duct 3 along the circumferential direction of the annular duct 3; during the gas flowing period, formaldehyde contained in the gas can be adsorbed by the purifying plate 4, so that the component of the formaldehyde contained in the gas is reduced, namely, the purification of the formaldehyde in the gas is realized, and the pollution to the environment and the harm to the human body are avoided when the gas is discharged again.

During the gas flow, formaldehyde in the gas is adsorbed through the plurality of purification plates 4, so that on one hand, the adsorption speed of formaldehyde in the gas can be increased, the adsorption efficiency of formaldehyde in the gas is improved, on the other hand, the more complete and more sufficient adsorption of formaldehyde in the gas can be further ensured, and the quality of the gas when being discharged from the box body 1 is improved.

During the gas flow, the servo motor 36 is started, and the rotating shaft 12 is driven to rotate forwards and reversely through the servo motor 36; during the rotation of the rotating shaft 12, the rotating shaft 12 drives the arc-shaped rack 25 to synchronously move; during rotation of the arc-shaped rack 25, when the arc-shaped rack 25 is engaged with the first gear 27, the first gear 27 rotates; during rotation of the first gear 27, the linkage shaft 26 rotates synchronously; during rotation of the linkage shaft 26, the second cam 28 rotates in synchronization; during rotation of the second cam 28, when the second cam 28 abuts against the purge plate 4, the purge plate 4 moves in the radial direction of the annular duct 3 away from the direction in which the annular duct 3 is located, the third spring 29 compresses, during which the gas moves along the side hole into the cylindrical tank 11; when the second cam 28 no longer abuts against the purge plate 4, the purge plate 4 is reset by the third spring 29, the purge plate 4 moves in the direction in which the radial direction box of the annular duct 3 approaches the annular duct 3, during which the gas moves in the circumferential direction of the annular duct 3 and cannot be discharged from the side hole into the cylindrical box 11; thus, the purge plate 4 can reciprocate in the radial direction of the annular duct 3.

Through the movement, on the one hand, the gas moving in the annular duct 3 can be discharged from the edge hole automatically after being purified by the purifying plate 4, no manual operation is needed, unnecessary trouble in the work of workers is saved, and on the other hand, the purifying plate 4 intermittently reciprocates along the radial direction of the annular duct 3, so that the gas can stay in the annular duct 3 for a longer time, the movement path is longer, and formaldehyde in the gas is ensured to be removed by the purifying plate 4.

During the reciprocating movement of the purifying plate 4 along the radial direction of the annular duct 3, the bristle blocks reciprocate relative to the length direction of the purifying plate 4; and, because the brush hair piece still pastes mutually with purifying plate 4, consequently the brush hair piece can clear up the dust and other impurity of purifying plate 4 length direction arbitrary department adhesion on purifying plate 4 for dust and other impurity can no longer adhere on purifying plate 4, have guaranteed purifying ability of purifying plate 4 can not reduce because of dust and other impurity, have strengthened the purifying effect of purifying plate 4 promptly, have improved purifying plate 4's efficiency.

And, because the brush hair piece is symmetrical to be set up in the purification board 4 both sides, consequently, the brush hair piece can clear up purification board 4 from two directions, has enlarged the scope of action of brush hair piece, has further guaranteed that dust and other impurity of purification board 4 surface optional position department all can be acted on by the brush hair piece, has guaranteed that purification board 4 is in the efficient purification state constantly promptly.

Also, during rotation of the shaft 12, the first bevel gear 30 moves synchronously; during the rotation of the first bevel gear 30, since the first bevel gear 30 is engaged with the second bevel gear 31, the second bevel gear 31 is rotated; during rotation of the second bevel gear 31, the stub shaft 9 rotates synchronously. During rotation of the stub shaft 9, the first cam 10 moves synchronously; during the rotation of the first cam 10, when the protruding part of the first cam 10 is propped against the linkage block 7, the linkage block 7 moves vertically downwards, the vertical block 5 moves synchronously, and the first spring 8 is compressed; when the protruding part of the first cam 10 is not propped against the linkage block 7 any more, the vertical block 5 is reset under the action of the first spring 8, the vertical block 5 moves vertically upwards, and the linkage block 7 moves synchronously; thus, the vertical block 5 can reciprocate vertically.

The bristle blocks synchronously move during the vertical reciprocating movement of the vertical blocks 5; during the vertical reciprocating motion of the bristle block, on one hand, the bristle block has a certain acting force, so that the bristle block can more rapidly clean dust and other impurities adhered to the purification plate 4, and the cleaning effect of the bristle block on the purification plate 4 is further enhanced; on the other hand, the bristle block can also clean dust and other impurities at any position in the height direction of the purifying plate 4, so that the action range of the bristle block is further enlarged, and the dust and other impurities at any position in the height direction of the purifying plate 4 are not adhered to the purifying plate 4 any more, namely, the purifying efficiency of the purifying plate 4 is further improved.

In summary, through the movement of the bristle block relative to the length direction of the purifying plate 4 and the vertical reciprocating movement of the bristle block, dust and other impurities at any position on the surface of the purifying plate 4 can be cleaned, i.e. the purifying plate 4 is ensured to be in an efficient working state at all times.

During the rotation of the rotating shaft 12, the rotating shaft 12 drives the unidirectional screw 17, the piston cylinder 14 and the purifying box 15 to do circumferential movement along the circumferential direction of the cylindrical box 11 through the auxiliary block 13; during the circumferential movement of the unidirectional screw 17 in the circumferential direction of the cylindrical bin 11, the second gear 33 moves synchronously; during the movement of the second gear 33, since the second gear 33 is engaged with the annular rack 32, the second gear 33 is rotated, that is, the second gear 33 is also rotated while the second gear 33 is moved circumferentially in the circumferential direction of the cylindrical case 11; during the rotation of the second gear 33, the unidirectional screw 17 rotates synchronously, i.e. the unidirectional screw 17 also rotates while the unidirectional screw 17 moves circumferentially in the circumferential direction of the cylindrical bin 11.

During rotation of the unidirectional screw 17, the third cam 34 rotates synchronously; during the rotation of the third cam 34, when the protruding portion of the third cam 34 abuts against the piston block 16, the piston block 16 moves in the direction of approaching the liquid discharge pipe along the length direction of the piston cylinder 14, and the fourth spring 35 is compressed; when the protruding part of the third cam 34 is not propped against the piston block 16 any more, the piston block 16 is reset under the action of the fourth spring 35, and the piston block 16 moves along the length direction of the piston cylinder 14 in a direction away from the liquid discharge pipe; thus, the piston block 16 is capable of reciprocating along the length of the piston cylinder 14.

The piston block 16 is capable of continuously drawing and discharging liquid during the reciprocation of the piston block 16 along the length of the piston cylinder 14; when the piston block 16 moves in the direction approaching the liquid inlet pipe, the piston block 16 extracts liquid, and the purifying liquid flows into the piston cylinder 14 along the liquid inlet pipe; when the piston block 16 moves in a direction away from the liquid inlet pipe, the piston block 16 discharges liquid, and the purifying liquid is discharged along the liquid outlet pipe, so that the purifying liquid is mixed with the gas in the cylindrical tank 11; during the mixing period of the purifying liquid and the gas, the purifying liquid can adsorb formaldehyde contained in the gas, further reduce formaldehyde component contained in the gas, further ensure that the gas is discharged from the box body 1, and has no pollution to the environment and no harm to human body.

Because the piston cylinder 14 can do circumferential movement, the purifying liquid can comprehensively clean the gas in the circumferential direction in the cylindrical tank 11, the action range of the purifying liquid is enlarged, and the gas in the cylindrical tank 11 is further ensured to be more fully treated by the purifying liquid.

During the forward rotation of the unidirectional screw 17, the nut seat 19 vertically moves downwards along the length direction of the guide rod 18, and the stirring block 20 synchronously moves; during the reverse rotation of the unidirectional screw 17, the nut seat 19 vertically moves upwards along the length direction of the guide rod 18, and the stirring block 20 synchronously moves; therefore, the stirring block 20 can reciprocate vertically in the height direction of the cylindrical tank 11, that is, the stirring block 20 can reciprocate vertically while the stirring block 20 reciprocates circumferentially in the circumferential direction of the cylindrical tank 11.

During the vertical reciprocating motion of the stirring block 20, the action range of the stirring block 20 can be enlarged, the action effect of the stirring block 20 is enhanced, the stirring block 20 can stir the gas and the purifying liquid at any position in the height direction of the cylindrical box 11, so that the gas and the purifying liquid are mixed more comprehensively and thoroughly, formaldehyde in the gas is further ensured to be removed under the action of the purifying liquid, and the action efficiency of the purifying liquid is improved.

In summary, through the circumferential motion of the stirring block 20 along the circumferential direction of the cylindrical box 11 and the vertical motion of the stirring block 20 along the height direction of the cylindrical box 11, the stirring block 20 can fully stir the gas and the purifying liquid, so that the gas and the purifying liquid are mixed more fully and more uniformly, the purifying liquid is ensured to react with formaldehyde in the gas as much as possible, the effect of the purifying liquid is enhanced, the utilization rate of the purifying liquid is improved, the formaldehyde in the gas is further ensured to be removed as much as possible, and no harm to human bodies and no pollution to the environment after the gas is discharged are ensured.

During the vertical reciprocating movement of the nut seat 19, the push block 24 moves synchronously; during the vertical downward movement of the pushing block 24, when the pushing block 24 is in contact with the annular block 21, the annular block 21 vertically moves downward under the action of the pushing block 24, the second spring 22 stretches until the annular block 21 is no longer attached to the annular hole 23, and gas is discharged from the cylindrical tank 11 along the annular hole 23, so that the gas in the cylindrical tank 11 is discharged; during the vertical upward movement of the push block 24, the push block 24 is no longer in contact with the annular block 21, the annular block 21 is reset under the action of the second spring 22, and the annular block 21 moves vertically upward until the annular block 21 is again attached to the annular hole 23, and gas cannot be discharged from the cylindrical bin 11 along the annular hole 23.

Namely, the pushing block 24 intermittently contacts with the annular block 21, so that the intermittent gas discharge from the cylindrical box 11 is realized, on one hand, the time for the gas to stay in the cylindrical box 11 can be prolonged, the formaldehyde in the gas can be more comprehensively treated by the purifying liquid, on the other hand, the cylindrical box 11 is not required to be opened or closed manually, unnecessary trouble in the work of workers is saved, and the practicability of the device is improved.

The foregoing is merely exemplary of the present application, and specific technical solutions and/or features that are well known in the art have not been described in detail herein. It should be noted that, for those skilled in the art, several variations and modifications can be made without departing from the technical solution of the present application, and these should also be regarded as the protection scope of the present application, which does not affect the effect of the implementation of the present application and the practical applicability of the patent. The protection scope of the present application is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims (10)

1. A purifying device for removing formaldehyde comprises a box body with an opening at the bottom and an air draft mechanism; the air suction mechanism comprises an air pump and an air inlet arranged on the box body; the air pump is fixedly connected with the box body, and the output port of the air pump is communicated with the air inlet; the method is characterized in that: the adsorption mechanism is arranged in the box body; the adsorption mechanism comprises an annular conduit with an opening at the top and a plurality of adsorption components; the annular guide pipe is fixedly connected with the top of the box body, and the top of the annular guide pipe is communicated with the air inlet; the adsorption component comprises a side hole formed in the annular duct, a purification plate for sealing the side hole, cleaning parts symmetrically arranged on two sides of the purification plate along the length direction of the purification plate, and a driving part for driving the purification plate to do intermittent reciprocating motion along the radial direction of the annular duct; one end of the purifying plate is attached to the inner wall of the annular duct, and the other end of the purifying plate penetrates through the side hole and stretches into the inner circle of the annular duct, and the purifying plate can do reciprocating motion in the side hole; the cleaning part is positioned in the inner circle of the annular conduit; the cleaning part comprises a vertical block and a brushing layer; the vertical block is connected with the outer wall of the annular duct; the brush hair layer is fixedly connected with the vertical block, and one end of the brush hair layer, which is far away from the vertical block, is attached to the purifying plate.

2. The purification apparatus for removing formaldehyde according to claim 1, wherein: the vertical block is in sliding connection with the outer wall of the annular conduit; the cleaning part also comprises a linkage block and a first spring; the linkage block is fixedly connected with the vertical block; two ends of the first spring are respectively connected with the vertical block and the annular guide pipe; the adsorption component also comprises a linkage part; the linkage part comprises a short shaft, a first cam and a linkage unit for driving the short shaft to rotate; the first cam is fixedly connected with the short shaft and is propped against the linkage block.

3. The purification apparatus for removing formaldehyde according to claim 2, wherein: the device also comprises a purifying component; the purifying component comprises a cylindrical box with an opening at the top and a purifying part arranged in the cylindrical box; the cylindrical box is fixedly connected with the bottom of the annular conduit; the purifying part comprises a rotating shaft, a plurality of purifying units and a power unit for driving the rotating shaft; the rotating shaft is rotationally connected with the cylindrical box; the purifying unit comprises an auxiliary block, a piston cylinder, a purifying box, a piston block and a driving piece for driving the piston block to reciprocate along the length direction of the piston cylinder; the auxiliary block is fixedly connected with the rotating shaft; the piston cylinder and the purifying box are fixedly connected with the auxiliary block; the piston block is connected with the piston cylinder in a sliding way; the piston cylinder is communicated with a liquid inlet pipe and a liquid outlet pipe; the liquid inlet pipe is communicated with the purifying box; an atomization nozzle is arranged at one end of the liquid discharge pipe far away from the piston cylinder; and an exhaust part for intermittently exhausting the gas in the cylindrical tank.

4. A purification apparatus for formaldehyde removal according to claim 3, characterized in that: the stirring unit is arranged on the auxiliary block; the stirring unit comprises a unidirectional screw, a guide rod, a nut seat, a stirring block and a moving part for driving the unidirectional screw to rotate; the unidirectional screw is rotationally connected with the auxiliary block; the guide rod is fixedly connected with the auxiliary block; the nut seat is in threaded connection with the unidirectional screw rod, and is in sliding connection with the guide rod; the stirring block is fixedly connected with the nut seat.

5. The purification apparatus for removing formaldehyde according to claim 4, wherein: the bottom of the cylindrical box is provided with a round hole; the exhaust part comprises a disc, an annular block and exhaust units symmetrically arranged at two sides of the disc along the diameter direction of the disc; the disc is positioned in the round hole, the disc is fixedly connected with the box body, the diameter of the disc is smaller than that of the round hole, and a gap between the disc and the round hole forms an annular hole; the annular block is positioned in the annular hole, is attached to the annular hole and can vertically move in the annular hole; the exhaust unit comprises a supporting block, a connecting block and a second spring; the supporting block is fixedly connected with the disc; one end of the connecting block is fixedly connected with the annular block, and the other end of the connecting block is in sliding connection with the supporting block; two ends of the second spring are respectively connected with the supporting block and the connecting block; the nut seat is fixedly connected with a push block, and the annular block is positioned on the motion track of the push block.

6. The purification apparatus for removing formaldehyde according to claim 5, wherein: the device also comprises an arc-shaped rack; the arc-shaped rack is fixedly connected with the rotating shaft; the driving part comprises a fixed block, a linkage shaft, a first gear, a second cam and a third spring; the fixed block is positioned in the inner circle of the annular duct, the fixed block is fixedly connected with the outer wall of the annular duct, and the purifying plate is in sliding connection with the fixed block; the linkage shaft is rotationally connected with the annular conduit; the first gear and the second cam are fixedly connected with the linkage shaft; the first gear is positioned on the motion track of the arc-shaped rack, and the arc-shaped rack can be meshed with the first gear; the second cam is propped against the purifying plate, and two ends of the third spring are respectively connected with the purifying plate and the fixed block.

7. The purification apparatus for removing formaldehyde according to claim 6, wherein: a first bevel gear is fixedly connected on the rotating shaft; the linkage unit is a second bevel gear; the short shaft is rotationally connected with the fixed block, the second bevel gear is fixedly connected with the short shaft, and the first bevel gear is meshed with the second bevel gear.

8. The purification apparatus for removing formaldehyde according to claim 7, wherein: the device also comprises an annular rack; the annular rack is fixedly connected with the cylindrical box; the moving part is a second gear; the second gear is fixedly connected with the unidirectional screw rod and meshed with the annular rack.

9. The purification apparatus for removing formaldehyde according to claim 8, wherein: the driving piece comprises a third cam and a fourth spring; the third cam is fixedly connected with the unidirectional screw rod and is propped against the piston block; and two ends of the fourth spring are respectively connected with the piston cylinder and the piston block.

10. A formaldehyde removal purification method based on claim 9, characterized by: the method comprises the following steps:

step (1): introducing gas into the annular duct by an air pump;

Step (2): during the process of gas flowing in the annular duct, the purifying plate intermittently reciprocates along the radial direction of the annular duct, so that the gas can enter the cylindrical box;

step (3): the brush hair layer can clean the purifying plate through the reciprocating motion of the brush hair layer relative to the length direction of the purifying plate and the vertical reciprocating motion of the brush hair layer;

step (4): the purifying liquid can comprehensively treat the gas in the cylindrical box through the circumferential movement of the piston cylinder along the circumferential direction of the cylindrical box and the reciprocating movement of the piston block along the length direction of the piston cylinder;

Step (5): the purifying liquid and the gas in the cylindrical tank are mixed more fully and more uniformly through the circumferential movement of the stirring block along the circumferential direction of the cylindrical tank and the reciprocating movement of the stirring block along the depth direction of the cylindrical tank;

step (6): the gas in the cylindrical box can be intermittently discharged from the cylindrical box through intermittent contact of the pushing block and the annular block, so that the gas has enough time to contact with the purifying liquid.