CN113521983A

CN113521983A - Slow-release formaldehyde removing device

Info

Publication number: CN113521983A
Application number: CN202110906881.3A
Authority: CN
Inventors: 姚科伟; 邹德云; 王宗标; 戴小龙
Original assignee: Ningbo Yuanda Detection Technology Co ltd
Current assignee: Ningbo Yuanda Detection Technology Co ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2021-10-22

Abstract

A slow-release formaldehyde removing device comprises an air inlet part, a material placing part and an adjusting cover. The air inlet part is internally provided with an air inlet assembly, and the air inlet bottom is uniformly provided with first air inlet holes. The material placing part is detachably assembled on the air inlet part and used for placing the slow-release formaldehyde removing functional material, the second air inlet holes are uniformly arranged at the bottom of the material placing part, and the uniformly arranged volatilization holes are formed in the side wall of the material placing part. The adjusting cover is rotatably assembled on the material placing part, adjusting holes which are uniformly arranged are formed in the side wall of the adjusting cover, and the slow-release formaldehyde removing functional substance is a formaldehyde removing solid composition or a slow-release formaldehyde removing gel substance. The invention enhances the formaldehyde removal efficiency of the slow-release formaldehyde removal functional substance by enhancing air circulation, further enhances the formaldehyde removal function, has a regulation function and can be adjusted according to actual conditions.

Description

Slow-release formaldehyde removing device

Technical Field

The invention belongs to the technical field of formaldehyde removal, and particularly relates to a slow-release formaldehyde removing device.

Background

Formaldehyde is an organic chemical substance and is a colorless, irritant, toxic gas. Acute poisoning by formaldehyde manifests as irritation to the skin and mucous membranes. Inhalation of high concentrations of formaldehyde can lead to respiratory irritation symptoms, sneezing, coughing and burning sensations in the nose and throat; in addition, bronchial asthma, pneumonia, and pulmonary edema can also be induced. A large amount of formaldehyde is taken into the digestive tract at one time, which can cause toxic symptoms of the digestive tract and the whole body, erosive burn of the oral cavity, the throat and the digestive tract, abdominal pain, convulsion, death and the like. The skin can cause allergic dermatitis, color spots, skin necrosis and other diseases when contacting with formaldehyde. Can kill the disease by orally ingesting 10-20 ml formaldehyde solution. Long-term exposure to formaldehyde can reduce respiratory function of organism, information integration function of nervous system and influence immune response of organism, and has toxic effect on cardiovascular system, endocrine system, digestive system, reproductive system and kidney. General symptoms include headache, weakness, anorexia, palpitation, insomnia, weight loss, autonomic nerve disorder, etc. Animal experiments also confirmed the pathological changes of the above related systems. And formaldehyde has strong carcinogenicity, namely, formaldehyde is put in a carcinogen list published by international cancer research institution of world health organization in 2017, 10 months and 27 days.

The largest decoration pollution in decoration is formaldehyde, and the excessive formaldehyde in a room is quite harmful to human bodies, so that a proper method must be adopted to reduce the content of the formaldehyde. The methods currently used for removing formaldehyde are roughly as follows: plant absorption method, aeration discharge method, carbon adsorption method, purifier treatment method, chemical agent treatment method, and light touch purification method. Chemical treatment captures formaldehyde mainly by two ways: one is to purify the air by neutralizing formaldehyde to generate harmless substances; one is to purify the air by blocking formaldehyde and organizing the volatilization of formaldehyde. The carbon adsorption method is to utilize the characteristics of activated carbon to adsorb and decompose formaldehyde.

The existing chemical preparation method and carbon adsorption method in the market are used by placing chemical preparation or activated carbon in a room, and capturing formaldehyde by volatilizing the chemical preparation or adsorbing and decomposing the formaldehyde by the activated carbon by virtue of natural air flow, so that the efficiency is relatively low.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the sustained-release formaldehyde removing device, which improves the formaldehyde removing efficiency of the sustained-release formaldehyde removing functional substance by enhancing air circulation, further enhances the formaldehyde removing function, has a regulating function and can be adjusted according to actual conditions.

In order to solve the above technical problems, the present invention is solved by the following technical solutions.

A slow-release formaldehyde removing device comprises an air inlet part, a material placing part and an adjusting cover. The air inlet part is internally provided with an air inlet assembly, and the air inlet bottom is uniformly provided with first air inlet holes. The material placing part is detachably assembled on the air inlet part and used for placing the slow-release formaldehyde removing functional material, the second air inlet holes are uniformly arranged at the bottom of the material placing part, and the uniformly arranged volatilization holes are formed in the side wall of the material placing part. The adjusting cover can be rotatably assembled on the material placing part, adjusting holes which are uniformly arranged are formed in the side wall of the adjusting cover, and the slow-release formaldehyde removing functional substance is a slow-release formaldehyde removing gel substance.

In a preferred embodiment, the sustained-release formaldehyde-removing gel comprises the following components in parts by weight: the main agent is composed of one or more of sodium chlorite, potassium chlorite and magnesium chlorite: 8% -15%; the slow release agent is composed of one or more of carrageenan, jelly glue, gel and agar: 15% -25%; a stabilizer consisting of one or more of sodium chloride, magnesium chloride and potassium chloride: 5% -15%; the redox indicator is composed of one of methylene blue, o-phenanthrene ferrous diazide and sodium diphenylamine sulfonate: 0.05% -0.2%; the main agent, the slow release agent, the stabilizing agent and the redox indicator are dissolved in water and then are heated and condensed into gel to form the component A; an activator consisting of an aqueous solution of one or more of sodium bisulfate, sodium sulfate, potassium bisulfate, potassium sulfate, citric acid, EDTA: 4% -8%; the activating agent is a component B; the balance of water, the component A is a gel, and the main agent, the stabilizing agent and the redox indicator are uniformly dispersed in the gel; when not used, the A component and the B component are separately packaged.

In the application, the slow-release formaldehyde-removing gel comprises a component A with a blocky gel structure and a component B of weak acid aqueous solution, and the slow-release formaldehyde-removing gel is separately and independently packaged, is not in contact with the outside and has high stability. When the air purifier is used, the component A is packed and unpacked, the component B solution is dripped on the component A, an acidic water-soluble environment is generated in the component A, chlorite is gradually decomposed in the acidic environment to generate chlorine dioxide and the chlorine dioxide is released into the air, and the chlorine dioxide reacts with formaldehyde in the air to achieve the purpose of removing the formaldehyde.

Meanwhile, in the application, the aqueous solution of the component B gradually permeates and diffuses in the component A, so that the reaction can be slowly carried out, the aim of slowly releasing chlorine dioxide is fulfilled, and the formaldehyde is stably and durably absorbed. The gel matrix (gel) in the application also plays a role in dispersing each component, so that the reaction is stably carried out, and the slow release effect is achieved.

Before and after the reaction, the potential state of the system changes, and the change can be indicated by a redox indicator. Thus, in the present application, a redox indicator may be incorporated into the gel matrix to indicate the progress of the reaction. Such as: the color of the color developing agent is just started, and the unreacted composition has a bleaching effect along with the generation and diffusion of the chlorine dioxide into the gel matrix, so that the original color of the gel matrix gradually fades and gradually becomes yellow (the color of the chlorine dioxide dissolved in the gel), and after the chlorine dioxide is completely released, the gel becomes colorless, which indicates that the reaction is finished, and the gel does not have the function of slowly releasing and removing formaldehyde and needs to be replaced.

In a preferred embodiment, the weight ratio of the main agent is 10-12%, the weight ratio of the slow release agent is 19-22%, the weight ratio of the stabilizing agent is 8-12%, the weight ratio of the activating agent is 5-6%, and the weight ratio of the redox indicator is 0.1%.

In a preferred embodiment, the air intake assembly is embodied as a fan, and the fan is arranged on the fixed protection frame, so that the replacement of a battery or the maintenance of accessories in the air intake assembly is facilitated.

In a preferred embodiment, a battery installation position is arranged in the middle of the fixed protection frame or a power line is connected with the fixed protection frame, and power can be supplied by the battery or the power line.

In a preferred embodiment, put the cooperation mode of dismantling of material portion and air inlet portion specifically for screw-thread fit, simple structure is convenient for fix, prevents to adjust and drives when covering and put the material portion and rotate.

In a preferred embodiment, the lower surface of the air adjusting inlet part is provided with box feet, so that the bottom of the air adjusting inlet part is suspended, the flow of air in the box body is facilitated, and the formaldehyde removing efficiency of the slow-release formaldehyde removing functional substance is improved.

In a preferred embodiment, the volatilization hole and the regulating hole are round or oblique strip-shaped, so that the volatilization speed of the slow-release formaldehyde-removing gel substance can be conveniently adjusted according to the concentration of formaldehyde in a room.

Compared with the prior art, the invention has the following beneficial effects: through reinforcing circulation of air, improve the formaldehyde efficiency that removes of slowly-releasing formaldehyde function thing, and then the reinforcing clears away the function of formaldehyde, and possess regulatory function, can adjust according to actual conditions.

Drawings

Fig. 1 is a perspective view of the present application.

Fig. 2 is an exploded schematic view of the present application.

Fig. 3 is a perspective view of the air inlet portion.

Fig. 4 is a perspective view of the material placing part.

Fig. 5 is a perspective view of the air inlet portion with the air inlet assembly removed.

Fig. 6 is a perspective view of the intake assembly.

Fig. 7 is a perspective view of the air intake assembly of the design structure 2.

Fig. 8 is an exploded view of the design structure 3.

The labels in the figure are: 1-an air inlet part; 11-an air intake assembly; 111-a fan; 112-fixed fender bracket; 112 a-battery mounting location; 112 b-power supply line; 12-a first air intake; 13-box feet. 2-a material placing part; 21-a second air intake; 22-volatilization orifice. 3-adjusting the cover; 31-adjustment holes.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The embodiments described below by referring to the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout, are exemplary only for explaining the present invention, and are not construed as limiting the present invention.

In describing the present invention, it is to be understood that the terms: the terms center, longitudinal, lateral, length, width, thickness, up, down, front, back, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the description, and thus, should not be construed as limiting the present invention. Furthermore, the terms: first, second, etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features shown. In describing the present invention, unless otherwise expressly specified or limited, the terms: mounting, connecting, etc. should be understood broadly, and those skilled in the art will understand the specific meaning of the terms in this application as they pertain to the particular situation.

Refer to fig. 1 to 8. Three design configurations in the present application are as follows.

Design structure 1: a slow-release formaldehyde removing device comprises an air inlet part 1, a material placing part 2 and an adjusting cover 3. An air inlet assembly 11 is assembled in the air inlet part 1, the air inlet assembly 11 is specifically a fan 111, and the fan 111 is arranged on a fixed protection frame 112, so that the replacement of a battery or the maintenance of accessories in the air inlet assembly 11 is facilitated. The bottom of the air inlet is evenly provided with first air inlet holes 12. The lower surface of the air adjusting inlet part 1 is provided with the box feet 13, so that the bottom of the air inlet part 1 is suspended, the flowing of air in the box body is facilitated, and the formaldehyde removing efficiency of the slow-release formaldehyde removing functional substance is improved.

Put material portion 2 demountable assembly on air inlet portion 1, put material portion 2 and air inlet portion 1's the cooperation mode of dismantling specifically be screw-thread fit, simple structure is convenient for fixed, prevents to adjust 3 drives when rotating of lid and puts material portion 2 and rotate. The material placing part 2 is used for placing the slow-release formaldehyde removing functional material, the second air inlet holes 21 are uniformly arranged at the bottom of the material placing part 2, and the volatilization holes 22 are uniformly arranged on the side wall of the material placing part 2. The adjusting cover 3 is rotatably assembled on the material placing part 2, and the side wall of the adjusting cover 3 is provided with adjusting holes 31 which are uniformly arranged. The volatilization hole 22 and the adjusting hole 31 are circular, so that the volatilization speed of the slow-release formaldehyde-removing gel substance can be conveniently adjusted according to the concentration of formaldehyde in a room.

Specifically, in the present application, a battery installation position 112a is provided in the middle of the fixed protection frame 112, and power can be supplied through a battery, so that the device is not limited by position.

When the device is used for formaldehyde removal work by using chemical preparations, the chemical preparations are firstly placed in the material placing part 2, the adjusting cover 3 is covered, a channel formed by the volatilization hole 22 and the adjusting hole 31 is adjusted according to the concentration of formaldehyde in a room, and then the device is started. Air enters from the first air inlet hole 12 at the bottom of the air inlet part 1 and then is blown into the material placing part 2 by the fan 111, moisture in the air and chemical agents generate chemical reaction, and generated reaction gas is emitted from a channel formed by the adjusting hole 31 and the volatilization hole 22 and reacts with formaldehyde. The larger the channel, the faster the air flow in the device, the more reaction gas is emitted and the corresponding formaldehyde treatment efficiency is higher.

Such as: when the device is used for removing formaldehyde by using the slow-release formaldehyde removing gel, the slow-release formaldehyde removing gel is placed in the material placing part 2, the adjusting cover 3 is covered, a channel formed by the volatilization hole 22 and the adjusting hole 31 is adjusted according to the concentration of formaldehyde in a room, and then the device is started. Air with formaldehyde enters from a first air inlet hole 12 at the bottom of the air inlet part 1 and then is blown into the material placing part 2 by a fan 111, the formaldehyde in the air reacts with the components in the slow-release formaldehyde removing gel to remove the formaldehyde, and the remaining air without the formaldehyde is emitted from a channel formed by the adjusting hole 31 and the volatilization hole 22. Simultaneously, the chlorine dioxide that can send out among the slowly-releasing formaldehyde-removing gel thing also can run out along with the air current for remove formaldehyde, and the passageway is bigger, and the air in the device flows faster, and corresponding processing efficiency to formaldehyde is also faster.

Design structure 2: referring to fig. 7, the difference from embodiment 1 is that a power cord 112b is connected between the fixed protection frames 112, and the device supplies power through the power cord 112b, so that the power supply is continuous and stable.

Design structure 3: referring to fig. 8, the difference from example 1 is that the volatilization hole 22 and the adjustment hole 31 are in the shape of oblique long strips, which facilitates to adjust the volatilization speed of the slow-release formaldehyde-removing gel according to the concentration of formaldehyde in the room.

Specifically, the sustained-release formaldehyde-removing functional substance in the application can be a sustained-release formaldehyde-removing gel substance. The sustained-release formaldehyde-removing gel comprises the following components in parts by weight: the main agent is composed of one or more of sodium chlorite, potassium chlorite and magnesium chlorite: 8% -15%; the slow release agent is composed of one or more of carrageenan, jelly glue, gel and agar: 15% -25%; a stabilizer consisting of one or more of sodium chloride, magnesium chloride and potassium chloride: 5% -15%; the redox indicator is composed of one of methylene blue, o-phenanthrene ferrous diazide and sodium diphenylamine sulfonate: 0.05% -0.2%; the main agent, the slow release agent, the stabilizing agent and the redox indicator are dissolved in water and then are heated and condensed into gel to form the component A; an activator consisting of an aqueous solution of one or more of sodium bisulfate, sodium sulfate, potassium bisulfate, potassium sulfate, citric acid, EDTA: 4% -8%; the activating agent is a component B; the balance of water, the component A is a gel, and the main agent, the stabilizing agent and the redox indicator are uniformly dispersed in the gel; when not used, the A component and the B component are separately packaged.

The following are specific examples.

The first embodiment is as follows: weighing the following materials in parts by weight: sodium chlorite 15% as a main agent, jelly gum 20% as a sustained release agent, sodium chloride 10% as a stabilizer, methylene blue 0.05% as a redox indicator, a citric acid aqueous solution 4% as an activator (the mass fraction of solute in the citric acid aqueous solution is 5%), and the balance being water. The total weight of the whole was 160 g.

The main agent, the slow release agent, the stabilizing agent and the redox indicator are dissolved in water and are heated (60-70 ℃) to be coagulated into gel, which is the component A. The activator is a component B. In use, the activator of the B component is dropped on the gel of the A component.

Example two: weighing the following materials in parts by weight: 8% of potassium chlorite as a main agent, 25% of carrageenan as a slow-release agent, 5% of potassium chloride as a stabilizing agent, 0.2% of diphenylamine sodium sulfonate as an oxidation-reduction indicator, 8% of potassium hydrogen sulfate aqueous solution as an activating agent (the mass fraction of solute in the potassium hydrogen sulfate aqueous solution is 5%), and the balance of water. The total weight of the whole was 160 g.

Example three: weighing the following materials in parts by weight: 12% of magnesium chlorite as a main agent, 20% of agar as a slow release agent, 10% of magnesium chloride as a stabilizing agent, 0.1% of ferrous phenanthroline as an oxidation-reduction indicator, 6% of sodium bisulfate aqueous solution as an activating agent (the mass fraction of solute in the sodium bisulfate aqueous solution is 5%), and the balance of water. The total weight of the whole was 160 g.

Example four: weighing the following materials in parts by weight: 11% of sodium chlorite as a main agent, 20% of gel as a slow release agent, 10% of sodium chloride as a stabilizing agent, 0.1% of phenanthroline ferrous ortho-iron as a redox indicator, 6% of sodium sulfate aqueous solution as an activating agent (the mass fraction of solute in the sodium sulfate aqueous solution is 5%), and the balance of water. The total weight of the whole was 160 g.

Comparative example one: the sustained-release agent in the first embodiment is removed and replaced by the same amount of water, namely the component A is also an aqueous solution, and the rest components are unchanged.

Comparative example two: the stabilizer in example three was removed and replaced with an equal amount of water, and the remaining components were unchanged.

The products of the above examples and comparative examples were tested by: dropping the component B onto the component A, placing the component A in an open state, placing the component B in a formaldehyde removal test chamber, and detecting the formaldehyde concentration in the environment every day through a formaldehyde detection device to obtain the following test results.

The first embodiment is as follows: the formaldehyde removal effect was observed within 22 days, during which time the formaldehyde concentration in the test environment decreased, during which time the color of the gel became pale yellow. The formaldehyde removal effect started to decline at day 23, the color of the gel gradually faded from light yellow to no formaldehyde removal function at day 25, and the color of the gel became colorless, indicating that the formaldehyde removal function was fully utilized.

Example two: the formaldehyde removal effect was observed within 20 days, during which time the formaldehyde concentration in the test environment decreased, during which time the color of the gel became pale yellow. The formaldehyde removal effect started to decline at day 21, the color of the gel gradually faded from light yellow to no formaldehyde removal function at day 23, and the color of the gel became colorless, indicating that the formaldehyde removal function was fully utilized.

Example three: the formaldehyde removal effect was observed within 21 days, during which the formaldehyde concentration in the test environment decreased, during which the gel became pale yellow in color. The formaldehyde removal effect started to decline at day 22, the color of the gel gradually faded from light yellow to no formaldehyde removal function at day 25, and the color of the gel became colorless, indicating that the formaldehyde removal function was fully utilized.

Example four: the formaldehyde removal effect was observed within 20 days, during which time the formaldehyde concentration in the test environment decreased, during which time the color of the gel became pale yellow. The formaldehyde removal effect started to decline at day 21, the color of the gel gradually faded from light yellow to no formaldehyde removal function at day 24, and the color of the gel became colorless, indicating that the formaldehyde removal function was fully utilized.

Comparative example one: the formaldehyde removal effect is achieved within 3 days, and the formaldehyde concentration in the test environment is rapidly reduced, during which the solution becomes yellowish. The formaldehyde removal effect started to decrease at day 4, the solution color gradually faded from light yellow, and the solution color became colorless by day 5 without the formaldehyde removal function.

Comparative example two: the formaldehyde removal effect was observed within 15 days, during which the formaldehyde concentration in the test environment decreased, during which the gel became yellowish in color. The formaldehyde removal effect started to decline at day 16, the color of the gel gradually faded from light yellow, and the color of the gel became colorless to indicate that the formaldehyde removal function was fully utilized by the time of day 17.

As can be seen from the above description, the sustained-release formaldehyde-removing gel in the present application has a block-shaped gel matrix structure, and the component A and the component B are respectively placed in independent packaging structures without contacting with each other under the condition of not using. In use, the A component gel is taken out and placed in a container with an opening for use. Then the component B acid solution is dripped on the surface of the component A gel slowly, the component A gel slowly permeates with the acid solution to generate a plurality of acid water-soluble environments, in the acid environments, chlorite is gradually decomposed to generate chlorine dioxide and is released into the air, and the chlorine dioxide reacts with formaldehyde in the air to achieve the aim of removing the formaldehyde, and meanwhile, the reaction is stably carried out to achieve the slow release effect.

Before and after the reaction, the potential state of the system changes, and the change can be indicated by a redox indicator. Thus, in the present application, a redox indicator may be incorporated into the gel matrix to indicate the progress of the reaction. Such as: the color of the color developing agent is just started, and the unreacted composition has a bleaching effect along with the generation and diffusion of the chlorine dioxide into the gel matrix, so that the original color of the gel matrix gradually fades and gradually becomes yellow (the color of the chlorine dioxide dissolved in the gel), the formaldehyde removing effect is best, the gel becomes colorless after the chlorine dioxide is completely released, the gel is completely reacted, the function of slowly releasing and removing the formaldehyde is not provided, and the gel needs to be replaced. In a reaction system, the placement of the stabilizer can improve the concentration of chloride ions and corresponding cations, which is beneficial to shifting the reaction balance to the left and improving the slow release function.

As mentioned above, the invention enhances the formaldehyde removal efficiency of the slow-release formaldehyde removal functional material by enhancing air circulation, further enhances the formaldehyde removal function, has a regulation function and can be adjusted according to actual conditions; and has the functions of slow release and color indication.

The scope of the present invention includes, but is not limited to, the above embodiments, and the present invention is defined by the appended claims, and any alterations, modifications, and improvements that may occur to those skilled in the art are all within the scope of the present invention.

Claims

1. The slow-release formaldehyde removal device is characterized by comprising an air inlet part (1), a material placing part (2) and an adjusting cover (3); an air inlet assembly (11) is assembled in the air inlet part (1), and first air inlet holes (12) are uniformly arranged at the bottom of the air inlet; the material placing part (2) is detachably assembled on the air inlet part (1), the material placing part (2) is used for placing the slow-release formaldehyde removing functional material, second air inlets (21) are uniformly arranged at the bottom of the material placing part (2), and volatilization holes (22) are uniformly arranged on the side wall of the material placing part (2); the adjusting cover (3) is rotatably assembled on the material placing part (2), and adjusting holes (31) which are uniformly arranged are formed in the side wall of the adjusting cover (3);

the slow-release formaldehyde removing functional substance is a slow-release formaldehyde removing gel substance.

2. The slow-release formaldehyde removing device according to claim 1, wherein the formaldehyde removing solid composition comprises the following components in parts by weight: the main agent is composed of one or more of sodium chlorite, potassium chlorite and magnesium chlorite: 8% -15%; the slow release agent is composed of one or more of carrageenan, jelly glue, gel and agar: 15% -25%; a stabilizer consisting of one or more of sodium chloride, magnesium chloride and potassium chloride: 5% -15%; the redox indicator is composed of one of methylene blue, o-phenanthrene ferrous diazide and sodium diphenylamine sulfonate: 0.05% -0.2%; the main agent, the slow release agent, the stabilizing agent and the redox indicator are dissolved in water and then are heated and condensed into gel to form the component A; an activator consisting of an aqueous solution of one or more of sodium bisulfate, sodium sulfate, potassium bisulfate, potassium sulfate, citric acid, EDTA: 4% -8%; the activating agent is a component B; the balance of water; when not used, the A component and the B component are separately packaged.

3. The slow-release formaldehyde removal device according to claim 2, wherein the weight ratio of the main agent is 10% -12%, the weight ratio of the slow-release agent is 19% -20%, the weight ratio of the stabilizing agent is 8% -12%, the weight ratio of the activating agent is 5% -6%, and the weight ratio of the redox indicator is 0.1%.

4. The slow-release formaldehyde removal device according to claim 1, wherein the air intake component (11) is a fan (111), and the fan (111) is disposed on the fixed protective frame (112).

5. The slow-release formaldehyde removing device according to claim 6, wherein a battery mounting position (112 a) is arranged in the middle of the fixed protection frame (112) or a power line (112 b) is connected with the fixed protection frame.

6. The slow-release formaldehyde removal device according to claim 1, wherein the detachable fit manner of the material placing part (2) and the air inlet part (1) is specifically a threaded fit.

7. The slow-release formaldehyde removing device according to claim 1, wherein the lower surface of the air adjusting inlet (1) is provided with a box foot (13).

8. The slow-release formaldehyde removing device according to claim 1, wherein the volatilization hole (22) and the adjustment hole (31) are circular or oblique long-strip-shaped.