CN114405266A

CN114405266A - Formaldehyde removing device and removing method thereof

Info

Publication number: CN114405266A
Application number: CN202111671284.3A
Authority: CN
Inventors: 陈利红; 钟金环; 张文标; 项智峰; 郑勇
Original assignee: Zhejiang Weikang Commodity Co ltd
Current assignee: Zhejiang Weikang Commodity Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-04-29

Abstract

The invention relates to the technical field of air purification equipment, and discloses a formaldehyde removing device and a formaldehyde removing method, wherein the formaldehyde removing device comprises a main box body and an upper cover plate, and is characterized in that: the main tank inner wall both sides are provided with the getter device, the getter device is kept away from once of the main tank and is provided with first tuber pipe, one side that the getter device was kept away from to first tuber pipe is provided with the second tuber pipe, the second tuber pipe is kept away from first tuber pipe one side and is provided with first formaldehyde clearing device and second formaldehyde clearing device side by side, be provided with the connecting pipe between first formaldehyde clearing device and the second formaldehyde clearing device, first formaldehyde clearing device and second formaldehyde clearing device outer wall all overlap and are equipped with fixing device, the inside illumination device that is provided with of main tank. The device simple structure novel in design removes dust with external formaldehyde gas through the getter device earlier, reduces the dust and to the follow-up influence of cleaing away formaldehyde and causing, simultaneously through first formaldehyde device and second formaldehyde clearing device and illumination device, can strengthen the effect of cleaing away of formaldehyde and clear away speed, consequently is fit for promoting.

Description

Formaldehyde removing device and removing method thereof

Technical Field

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

Background

Formaldehyde can combine with protein to form formaldehyde-protein complex, which can denature protein and cause symptoms of eye stabbing pain, serious respiratory tract irritation, headache and the like clinically. The trace formaldehyde can react with hydrogen chloride in the air to generate the bis (chloromethyl) ether carcinogen. High-concentration formaldehyde has toxicity to nervous system, immune system, liver and the like, can cause leukemia, and is one of potential strong mutagens.

The existing method for purifying formaldehyde mainly comprises the following steps: indoor ventilation; secondly, the plant adsorption method has too slow effect and unobvious effect; the physical adsorption method mainly utilizes some substances with adsorption capacity to adsorb harmful substances, thereby achieving the purpose of eliminating indoor pollution. Porous materials with high specific surface area, such as activated carbon and molecular sieves, are commonly used as adsorbents. A common catalyst is TiO2, and is limited by no light at night, so that the formaldehyde removal efficiency is low under actual conditions; the air anion technology mainly selects rare mineral stone with obvious thermal effect as raw material, and the rare mineral stone is added into wall material, when the stone is contacted with air, the water in the air and air is ionized, negative ions are generated, polarization can be generated, and the stone discharges outwards, so that the air is purified; the chemical method is a short-term effective method, and achieves the aim of removing formaldehyde in the air by the nucleophilic addition reaction of a chemical reagent such as a substance with hydroxyl, sulfydryl or amino groups and formaldehyde.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the formaldehyde removing device and the removing method thereof, which have the advantages of efficiently catalyzing formaldehyde, improving the formaldehyde removing efficiency, enhancing the formaldehyde removing effect and the like, and solve the problems of too slow efficiency or incomplete formaldehyde removing when the existing device removes formaldehyde.

(II) technical scheme

In order to realize the purposes of efficiently catalyzing formaldehyde, improving the removal efficiency of the formaldehyde and simultaneously enhancing the removal effect of the formaldehyde, the invention provides the following technical scheme: including the main tank body and upper cover plate, main tank body inner wall both sides are provided with the getter device, the getter device is kept away from one of the main tank body and is provided with first tuber pipe, one side that the getter device was kept away from to first tuber pipe of first tuber pipe is provided with the second tuber pipe, the second tuber pipe is kept away from first tuber pipe one side and is provided with first formaldehyde clearing device and second formaldehyde clearing device side by side, be provided with the connecting pipe between first formaldehyde clearing device and the second formaldehyde clearing device, first formaldehyde clearing device and second formaldehyde clearing device outer wall all overlap and are equipped with fixing device, the inside illumination device that is provided with of main tank body, the quantity of illumination device is two sets of, the illumination device centers on second formaldehyde clearing device circular distribution.

Preferably, the suction device includes ventilative board, filter screen and suction fan, the both ends of filter screen respectively with ventilative board and suction fan fixed connection, a plurality of gas pockets have been seted up to ventilative board inside, the suction fan with external electric connection and with first tuber pipe fixed connection, get rid of the inside dust that contains of gas when playing the gas circulation, reduce the influence to follow-up formaldehyde clearance.

Preferably, first formaldehyde clearing device includes filter tube and sealed lid, the internal diameter size phase-match of sealed lid bottom external diameter size and filter tube, sealed lid connects with the filter tube soon, sealed inside two sets of gas pockets and the equal fixed connection of gas pocket and second tuber pipe and connecting pipe of having seted up of lid play the inside structure of filter tube and be convenient for install and dismantle, communicate external gas's effect simultaneously.

Preferably, first formaldehyde clearing device still includes chassis, baffle, puts thing board and knob, the chassis, put the external diameter size of thing board and baffle and the internal diameter size phase-match of filter tube, the chassis with put the inside gas pocket that has all seted up of thing board, chassis and filter tube fixed connection, it has active carbon to put thing board surface covering, the baffle passes through the knob and rotates with the filter tube to be connected, and the baffle plays the effect of extension formaldehyde gas circulation time, puts the effect that the thing board played formaldehyde gas in the filter chamber.

Preferably, the second formaldehyde removing device comprises a glass tube, an upper sealing cover, a rotating shaft rod, a driving motor, a connecting rod, stirring fan blades, a bearing ring and second ultraviolet lamps, the connecting rod is fixedly connected with the rotating shaft rod, the outer diameter of the upper sealing cover is matched with the inner diameter of the glass tube, the driving motor and the second ultraviolet lamps are electrically connected with the outside, the number of the second ultraviolet lamps is four, the second ultraviolet lamps are distributed in a circular mode around the bearing ring, and the second ultraviolet lamps and the stirring fan blades are matched for use, so that the decomposition efficiency of the active carbon and photocatalyst mixture in the glass tube on the absorbent of formaldehyde gas can be improved.

Preferably, fixing device is including fixed pipe, latch segment, slider, telescopic link and reset spring, latch segment and slider fixed connection, latch segment and slider are around fixed pipe circular distribution, the slider is trapezoidal design, and is two sets of the maximum interval of slider is greater than the external diameter size of filter tube and glass pipe, and the slider plays the effect that filter tube and glass pipe are convenient for install and dismantle.

Preferably, the telescopic link and reset spring's both sides respectively with latch segment and fixed pipe fixed connection, the latch segment is the rubber material, and telescopic link, reset spring play the automatic re-setting of latch segment, and then the effect of fixed filter tube and glass pipe.

Preferably, the illumination device includes upper fixed ring, lower fixed ring, first ultraviolet lamp, the both ends of first ultraviolet lamp respectively with upper fixed ring and lower fixed ring fixed connection, the quantity of first ultraviolet lamp is a plurality of, first ultraviolet lamp circular distribution between upper fixed ring and lower fixed ring, first ultraviolet lamp and external electric connection, lower fixed ring outer wall is provided with the stopper, the inside spout of having seted up of main tank, lower fixed ring passes through stopper and spout and main tank sliding connection, and upper fixed ring and lower fixed ring play first ultraviolet lamp of adjustment and second formaldehyde clearing device distance, and then influence catalytic effect's effect.

Preferably, two groups of air holes are formed in the top of the first ultraviolet lamp of the glass tube and are respectively fixedly connected with the first ultraviolet lamp of the connecting tube and the first ultraviolet lamp of the second air tube, the first ultraviolet lamp of the glass tube contains a mixture of activated carbon and a light-activated enzyme, and the glass tube plays a role in secondarily removing formaldehyde contained in gas, improving the formaldehyde removal effect and the removal rate.

Preferably, the method mainly comprises the following steps:

s1, when the air conditioner is used, the main box body is conveyed into a house containing formaldehyde gas, the fan is started, the indoor formaldehyde-containing gas sequentially penetrates through the ventilating plate and the filter screen and enters the first air pipe, and when the air enters the filter screen, external dust is removed;

s2, after the formaldehyde-containing gas enters the first air pipe and the second air pipe, the gas is gradually discharged into the filter pipe under the pressure of the suction fan, the interior of the filter pipe is divided into two groups of closed spaces by the baffle, and the surface of the storage plate is coated with active carbon, so that the formaldehyde contained in the gas is adsorbed and removed for one time, and the adsorption capacity on the formaldehyde is enhanced while the gas flow channel is prolonged;

s3, when the formaldehyde-containing gas passes through the first formaldehyde removing device and flows into the second formaldehyde removing device through the connecting pipe, the first ultraviolet lamp and the second ultraviolet lamp are turned on, and because the inside of the glass tube contains the mixture of the activated carbon and the photocatalyst, the photocatalyst can generate a large amount of strong oxidizing substances under the illumination condition while adsorbing formaldehyde, so that the formaldehyde is decomposed into carbon dioxide and water, the formaldehyde contained in the indoor gas is further removed, and the purification effect is improved;

s4, when the formaldehyde contained in the gas in the second formaldehyde removing device is adsorbed by activated carbon and decomposed by the reaction of photocatalyst, the gas in the second formaldehyde removing device passes through the second air pipe, the filter screen and the air-permeable plate in sequence and is discharged to the indoor again under the suction force of the suction fan, and a circulation is formed.

(III) advantageous effects

Compared with the prior art, the invention provides a formaldehyde removing device and a removing method thereof, which have the following beneficial effects:

1. the device firstly sucks external formaldehyde gas into the first air pipe through the suction fan in the air suction device, removes dust to the formaldehyde gas when the formaldehyde gas passes through the filter screen, reduces the influence of dust on the subsequent removal of formaldehyde, and simultaneously, when the formaldehyde gas flows into the first formaldehyde removing device through the first air pipe and the second air pipe, the formaldehyde gas sequentially passes through the object placing plate to form backflow, the activated carbon coated on the surface of the object placing plate can remove the formaldehyde gas at one time, the existence of the baffle plate can prolong the circulation time of the formaldehyde gas in the filter pipe, and enhance the removal effect of the formaldehyde,

2. and because the inside mixture that contains active carbon and photocatalyst of glass pipe, after formaldehyde gas flows into the inside back of second formaldehyde clearing device after once getting rid of, active carbon carries out the secondary absorption to formaldehyde gas this moment, and photocatalyst decomposes out a large amount of strong oxidizing property values and then clears away formaldehyde for the cubic under the irradiation of first ultraviolet lamp and second ultraviolet lamp, and can strengthen the formaldehyde of the device once more and clear away effect and clear away speed owing to stirring fan blade's existence, and form gas circulation through the suction fan, can use repeatedly, strengthen the device's practicality.

Drawings

FIG. 1 is a schematic view of the overall appearance structure of the present invention;

FIG. 2 is a schematic view of the overall internal structure of the present invention;

FIG. 3 is a schematic view of the internal structure of the first formaldehyde removal device according to the present invention;

FIG. 4 is a schematic view of a fixing device according to the present invention;

FIG. 5 is a schematic view of the inner structure of the fixing tube according to the present invention;

FIG. 6 is a schematic view of an illumination device according to the present invention;

FIG. 7 is a schematic view of the getter device of the present invention;

FIG. 8 is a schematic view of the internal structure of a second formaldehyde removing apparatus according to the present invention.

In the figure: 1. a main box body; 2. an upper cover plate; 3. a suction device; 301. a gas permeable plate; 302. a filter screen; 303. a suction fan; 4. a first air duct; 5. a second air duct; 6. a first formaldehyde removal device; 601. a filter tube; 602. a chassis; 603. a baffle plate; 604. a storage plate; 605. a knob; 606. a sealing cover; 7. a second formaldehyde removal device; 701. a glass tube; 702. an upper sealing cover; 703. a spindle rod; 704. a drive motor; 705. a connecting rod; 706. a stirring fan blade; 707. a bearing ring; 708. a second ultraviolet lamp; 8. a connecting pipe; 9. a fixing device; 901. a fixed tube; 902. a locking block; 903. a slider; 904. a telescopic rod; 905. a return spring; 10. an illumination device; 1001. an upper fixing ring; 1002. a lower fixing ring; 1003. a first ultraviolet lamp.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 1-8, a formaldehyde removing device and a removing method thereof include a main box 1 and an upper cover plate 2, wherein the two sides of the inner wall of the main box 1 are provided with air suction devices 3, each air suction device 3 includes a ventilation plate 301, a filter screen 302 and a suction fan 303, two ends of the filter screen 302 are respectively fixedly connected with the ventilation plate 301 and the suction fan 303, a plurality of air holes are formed in the ventilation plate 301, and the suction fan 303 is electrically connected with the outside and fixedly connected with a first air duct 4, so that air circulation is achieved, dust contained in air is removed, and influence on subsequent formaldehyde removal is reduced.

Referring to fig. 3 or 6, a first air duct 4 is disposed at one time of the air suction device 3 away from the main box body 1, a second air duct 5 is disposed at one side of the first air duct 4 away from the air suction device 3, a first formaldehyde removing device 6 and a second formaldehyde removing device 7 are disposed at one side of the second air duct 5 away from the first air duct 4 in parallel, the first formaldehyde removing device 6 includes a filter tube 601 and a sealing cover 606, the outer diameter of the bottom of the sealing cover 606 is matched with the inner diameter of the filter tube 601, the sealing cover 606 is screwed with the filter tube 601, two groups of air holes are disposed inside the sealing cover 606, and the air holes are fixedly connected with the second air duct 5 and the connecting tube 8, so that the internal structure of the filter tube 601 is convenient to mount and dismount, and meanwhile, the external air is communicated; the first formaldehyde removing device 6 further comprises a chassis 602, a baffle 603, a placement plate 604 and a knob 605, the outer diameter of the chassis 602, the placement plate 604 and the baffle 603 is matched with the inner diameter of the filter pipe 601, air holes are formed in the chassis 602 and the placement plate 604, the chassis 602 is fixedly connected with the filter pipe 601, the surface of the placement plate 604 is covered with active carbon, the baffle 603 is rotatably connected with the filter pipe 601 through the knob 605, the baffle 603 plays a role in prolonging the circulation time of formaldehyde gas, the placement plate 604 plays a role in filtering formaldehyde gas in a room at a time, the second formaldehyde removing device 7 comprises a glass pipe 701, an upper sealing cover 702, a rotating shaft rod 703, a driving motor 704, a connecting rod 705, a stirring fan blade 706, a bearing ring 707 and a second ultraviolet lamp 708, the connecting rod is fixedly connected with the rotating shaft rod 703, the outer diameter of the upper sealing cover 702 is matched with the inner diameter of the glass pipe 701, the driving motor 704 and the second ultraviolet lamp 708 are electrically connected with the outside, the quantity of second ultraviolet lamp 708 is four groups, second ultraviolet lamp 708 is around the circular distribution of ring 707 that holds, second ultraviolet lamp 708 and stirring fan blade 706's cooperation are used, can accelerate the inside active carbon of glass pipe 701 and photocatalyst mixture to formaldehyde gas's adsorbent decomposition efficiency, two sets of gas pockets and gas pocket respectively with connecting pipe 8 and second tuber pipe 5 fixed connection have been seted up at glass pipe 701 top, the inside active carbon and the short enzyme mixture that contains of glass pipe 701, glass pipe 7 plays the secondary and gets rid of the formaldehyde that contains in the gas, the effect of formaldehyde scavenging effect and clearance rate is improved.

Example two:

referring to fig. 4-5, on the basis of the first embodiment, a connecting pipe 8 is arranged between the first formaldehyde removing device 6 and the second formaldehyde removing device 7, the outer walls of the first formaldehyde removing device 6 and the second formaldehyde removing device 7 are respectively sleeved with a fixing device 9, each fixing device 9 comprises a fixing pipe 901, a locking block 902, a slider 903, a telescopic rod 904 and a return spring 905, the locking blocks 902 and the sliders 903 are fixedly connected, the locking blocks 902 and the sliders 903 are circularly distributed around the fixing pipe 901, the sliders 903 are in a trapezoidal design, the maximum distance between the two sets of sliders 903 is greater than the outer diameter of the filter pipe 601 and the outer diameter of the glass pipe 701, and the sliders 903 play a role in facilitating installation and disassembly of the filter pipe 601 and the glass pipe 701; the both sides of telescopic link 904 and reset spring 905 respectively with latch segment 902 and fixed pipe 901 fixed connection, latch segment 902 is the rubber material, and telescopic link 904, reset spring 905 play latch segment 902's automatic re-setting, and then fixed filter tube 601 and glass pipe 701's effect.

Referring to fig. 6, the main casing 1 is provided therein with two sets of the lighting devices 10, the lighting devices 10 are circularly distributed around the second formaldehyde removing device 7, the lighting devices 10 include an upper fixing ring 1001 and a lower fixing ring 1002, first ultraviolet lamp 1003, the both ends of first ultraviolet lamp 1003 respectively with last solid fixed ring 1001 and the solid fixed ring 1002 fixed connection down, the quantity of first ultraviolet lamp 1003 is a plurality of, first ultraviolet lamp 1003 is circular distribution between last solid fixed ring 1001 and the solid fixed ring 1002 down, first ultraviolet lamp 1003 and external electric connection, gu fixed ring 1002 outer wall is provided with the stopper down, the spout has been seted up to the internal portion of main tank, gu fixed ring 1002 passes through stopper and spout and 1 sliding connection of main tank, go up solid fixed ring 1001 and gu fixed ring 1002 down play the 7 distances of first ultraviolet lamp 1003 of adjustment and second formaldehyde clearing device, and then influence the effect of catalytic effect.

The working principle is as follows: when the formaldehyde-containing air cleaner is used, the main box body 1 is conveyed into a house containing formaldehyde gas, the fan 303 is started, the formaldehyde gas in the room sequentially penetrates through the ventilating plate 301 and the filter screen 302 and enters the first air duct 4, the outside dust is removed when the gas enters the filter screen 302, the gas is gradually discharged into the filter tube 601 under the pressure of the suction fan 303 after the formaldehyde-containing gas enters the first air duct 4 and the second air duct 5, the interior of the filter tube 601 is divided into two groups of closed spaces by the baffle 603, and the surface of the object placing plate 604 is coated with active carbon, so that the formaldehyde contained in the gas is adsorbed and removed for one time, the adsorption capacity on the formaldehyde is enhanced while the gas flow channel is prolonged, when the formaldehyde-containing gas passes through the first formaldehyde removing device 6 and flows into the second formaldehyde removing device 7 through the connecting pipe 8, the first ultraviolet lamp 1003 and the second ultraviolet lamp 708 are started, because the inside active carbon and the enzyme mixture that promotes of glass pipe 701 that contains, while the active carbon is to formaldehyde adsorption, photocatalyst produces a large amount of strong oxidizing substance under the irradiant condition, and then decompose formaldehyde, make formaldehyde decompose into carbon dioxide and water, further get rid of the formaldehyde that contains in the indoor gas, improve purifying effect, after the formaldehyde that contains in the inside gas of second formaldehyde clearing device 7 adsorbs and the reaction of photocatalyst is decomposed, again under the suction of suction fan 303, pass second tuber pipe 5, second tuber pipe 4, filter screen 302 and gas-permeable plate 301 in proper order with the inside gas of second formaldehyde clearing device 7 and discharge to indoor again, form the circulation.

To sum up, the device simple structure modern design removes dust with external formaldehyde gas through the getter device earlier, reduces the influence that the dust caused to follow-up formaldehyde of cleaing away, simultaneously through first formaldehyde device and second formaldehyde clearing device and illumination device, can strengthen the effect of cleaing away of formaldehyde and clear away speed, consequently is fit for promoting.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a formaldehyde clearing device, includes main tank body (1) and upper cover plate (2), its characterized in that: the two sides of the inner wall of the main box body (1) are provided with air suction devices (3), a first air pipe (4) is arranged on the air suction devices (3) far away from the main box body (1) at one time, a second air pipe (5) is arranged on one side of the first air pipe (4) far away from the air suction device (3), a first formaldehyde removing device (6) and a second formaldehyde removing device (7) are arranged on one side of the second air pipe (5) far away from the first air pipe (4) in parallel, a connecting pipe (8) is arranged between the first formaldehyde removing device (6) and the second formaldehyde removing device (7), the outer walls of the first formaldehyde removing device (6) and the second formaldehyde removing device (7) are sleeved with fixing devices (9), the main box body (1) is internally provided with two groups of illumination devices (10), the number of the illumination devices (10) is two, the illumination devices (10) are circularly distributed around the second formaldehyde removing device (7).

2. The formaldehyde removal device of claim 1, wherein: the air suction device (3) comprises a ventilating plate (301), a filter screen (302) and a suction fan (303), wherein the two ends of the filter screen (302) are respectively fixedly connected with the ventilating plate (301) and the suction fan (303), a plurality of air holes are formed in the ventilating plate (301), and the suction fan (303) is electrically connected with the outside and fixedly connected with the first air pipe (4).

3. The formaldehyde removal device of claim 1, wherein: first formaldehyde clearing device (6) are including filter tube (601) and sealed lid (606), the internal diameter size phase-match of sealed lid (606) bottom external diameter size and filter tube (601), sealed lid (606) connect with filter tube (601) soon, sealed lid (606) inside has seted up two sets of gas pockets and gas pocket and the equal fixed connection of second tuber pipe (5) and connecting pipe (8).

4. The formaldehyde removal device of claim 1, wherein: first formaldehyde clearing device (6) still include chassis (602), baffle (603), put thing board (604) and knob (605), chassis (602), the external diameter size who puts thing board (604) and baffle (603) and the internal diameter size phase-match of filter tube (601), chassis (602) and put thing board (604) inside all seted up the gas pocket, chassis (602) and filter tube (601) fixed connection, it has active carbon to put thing board (604) surface covering, baffle (603) are connected with filter tube (601) rotation through knob (605).

5. The formaldehyde removal device of claim 1, wherein: the second formaldehyde removing device (7) comprises a glass tube (701), an upper sealing cover (702), a rotating shaft rod (703), a driving motor (704), a connecting rod (705), stirring fan blades (706), a bearing ring (707) and second ultraviolet lamps (708), wherein the connecting rod (705) is fixedly connected with the rotating shaft rod (703), the outer diameter of the upper sealing cover (702) is matched with the inner diameter of the glass tube (701), the driving motor (704) and the second ultraviolet lamps (708) are electrically connected with the outside, the number of the second ultraviolet lamps (708) is four, and the second ultraviolet lamps (708) are circularly distributed around the bearing ring (707).

6. The formaldehyde removal device of claim 1, wherein: the fixing device (9) comprises a fixing pipe (901), a locking block (902), a sliding block (903), an expansion rod (904) and a reset spring (905), the locking block (902) is fixedly connected with the sliding block (903), the locking block (902) and the sliding block (903) are circularly distributed around the fixing pipe (901), the sliding block (903) is in a trapezoidal design, and the maximum distance between the two groups of sliding blocks (903) is larger than the outer diameter of the filter pipe (601) and the outer diameter of the glass pipe (701).

7. The formaldehyde removal device of claim 5, wherein: the two sides of the telescopic rod (904) and the reset spring (905) are respectively fixedly connected with the locking block (902) and the fixed pipe (901), and the locking block (902) is made of rubber.

8. The formaldehyde removal device of claim 1, wherein: illumination device (10) are including upper fixed ring (1001), lower fixed ring (1002), first ultraviolet lamp (1003), the both ends of first ultraviolet lamp (1003) respectively with upper fixed ring (1001) and lower fixed ring (1002) fixed connection, the quantity of first ultraviolet lamp (1003) is a plurality of, circular distribution between upper fixed ring (1001) and lower fixed ring (1002) is first ultraviolet lamp (1003), first ultraviolet lamp (1003) and external electric connection, lower fixed ring (1002) outer wall is provided with the stopper, the spout has been seted up to main tank body (1) inside, lower fixed ring (1002) are through stopper and spout and main tank body (1) sliding connection.

9. The formaldehyde removal device of claim 1, wherein: two groups of air holes are formed in the top of the glass tube (701) and are respectively and fixedly connected with the connecting tube (8) and the second air tube (5), and the glass tube (701) contains a mixture of activated carbon and a light-induced enzyme.

10. The formaldehyde removing device and the removing method thereof as claimed in claims 1-9, which mainly comprises the following steps:

s1, when the air conditioner is used, the main box body (1) is conveyed into a house containing formaldehyde gas, the fan (303) is started, the formaldehyde gas contained in the room sequentially penetrates through the ventilating plate (301) and the filter screen (302) and enters the first air pipe (4), and when the air enters the filter screen (302), external dust is removed;

s2, after the formaldehyde-containing gas enters the first air pipe (4) and the second air pipe (5), the gas is gradually discharged into the filter pipe (601) under the pressure of the suction fan (303), the interior of the filter pipe (601) is divided into two groups of closed spaces by the baffle (603), and the surface of the object placing plate (604) is coated with active carbon, so that the formaldehyde contained in the gas is adsorbed and removed once, and the adsorption capacity on the formaldehyde is enhanced while the gas flow channel is prolonged;

s3, when the formaldehyde-containing gas passes through the first formaldehyde removing device (6) and flows into the second formaldehyde removing device (7) through the connecting pipe (8), the first ultraviolet lamp (1003) and the second ultraviolet lamp (708) are turned on, and because the glass tube (701) contains the activated carbon and the photocatalyst mixture, the photocatalyst generates a large amount of strong oxidizing substances under the illumination condition while adsorbing formaldehyde, so that the formaldehyde is decomposed into carbon dioxide and water, the formaldehyde contained in the indoor gas is further removed, and the purifying effect is improved;

s4, when the formaldehyde contained in the gas in the second formaldehyde removing device (7) is adsorbed by activated carbon and decomposed by the reaction of photocatalyst, the gas in the second formaldehyde removing device (7) passes through the second air pipe (5), the second air pipe (4), the filter screen (302) and the air-permeable plate (301) in sequence and is discharged to the indoor again under the suction force of the suction fan (303) again, and a cycle is formed.