Device capable of replacing filter element and rapidly removing formaldehyde and VOC

Abstract

The invention discloses a device capable of replacing a filter element and rapidly removing formaldehyde and VOC, and relates to the technical field of air purification, the device comprises a main body, the top of the main body is provided with a plurality of ventilation nets and ventilation pipes, the interior of the main body is divided into three containing cavities through partition plates, and a first drawer, a second drawer and a third drawer are slidably arranged in the three containing cavities correspondingly; water and ammonium sulfate non-woven fabric bags are added into the first drawer and the third drawer, and an activated carbon non-woven fabric bag is placed in the second drawer. The device is simple in overall structure, convenient to manufacture, low in cost and convenient to use, the interior of the device is divided into the three containing cavities through the partition plates, fillers in the containing cavities do not interfere with one another, and the effects of absorbing pollutants and purifying air among the containing cavities are not affected; the mode of combining the ammonium sulfate solution and the activated carbon is adopted, formaldehyde and VOC in air are absorbed, and the purification effect is improved; the product of the ammonium sulfate solution for absorbing formaldehyde is low-concentration sulfuric acid which does not have volatility and strong oxidizing property, so that secondary pollution is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of air purification, and in particular to a device with a replaceable filter element for quickly removing formaldehyde and VOC. Background Art

[0002] Existing formaldehyde removal devices, for example, patent CN201810647250.2 discloses a formaldehyde removal device for walls, whose structure and size are not suitable for formaldehyde removal in home decoration and industrial decoration. Some devices are too complicated, and it is difficult for people without professional background to use the device correctly to remove formaldehyde.

[0003] Other formaldehyde removal products, such as functional additives, developers and other substances, are mostly chemically synthesized and have complex ingredients. Formaldehyde gel, VOC adsorption gel and other substances will undergo chemical reactions after adsorbing formaldehyde and VOC, and the products are prone to produce additional toxicity. Formaldehyde removal catalysts or catalytic agents are mostly heavy metals or transition metals, and the reactant is diethanolamine, which is carcinogenic and not suitable for home use. In addition, although the use of chemical oxidation to remove formaldehyde can achieve obvious results, such as using ozone, formaldehyde catalytic materials, etc., for example, in patent CN202310896801.X, a composite air purification material for formaldehyde removal and antibacterial and its preparation method are disclosed. Ozone can be used as an air purifier, but when the concentration of ozone is high, it will irritate the mucous membrane and even cause central nervous system disorders. Ozone is highly oxidizing. Ozone in the home will also corrode rubber and cork. Long-term exposure to ozone can cause people to experience symptoms such as fatigue and coughing. Moreover, ozone reacts with VOCs in the air, which may produce toxic gases such as nitrogen dioxide and nitric oxide, which further irritate the human mucous membrane. The preparation of related formaldehyde removal composite materials often requires heavy metals, transition metals and various metal salts, which are prepared by dissolving, heating, burning and other methods, and combined with organic substances such as urea and ascorbic acid to achieve catalytic oxidation of formaldehyde. However, metal salts and organic substances are dangerous for people without a chemical background, and the heat treatment temperature is high, so ordinary people do not have the relevant conditions.

[0004] In addition, some formaldehyde removal methods add activated carbon or activated carbon interlayers to household cloths to adsorb formaldehyde through carbon cloth. For example, patent CN202322426985.1 discloses a composite carbon cloth for formaldehyde removal and purification. However, adsorbents such as activated carbon and silica gel have a maximum adsorption capacity. After reaching the maximum adsorption capacity, they will release formaldehyde and need to be replaced. As an adsorbent, activated carbon not only adsorbs formaldehyde, but also other substances such as VOCs. It will quickly reach adsorption saturation and stop adsorption.

[0005] Therefore, how to provide a device that uses a replaceable filter element to quickly remove formaldehyde and VOC, uses ammonium sulfate to absorb formaldehyde, and uses activated carbon to adsorb VOC gas, which has the characteristics of simple structure and easy use, has become a technical problem that needs to be urgently solved by people in this field. Summary of the invention

[0006] The purpose of the present invention is to provide a device with a replaceable filter element for quickly removing formaldehyde and VOC, thereby solving the problems of high cost and the emission of substances harmful to the human body.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] The present invention discloses a device for quickly removing formaldehyde and VOC with a replaceable filter element, comprising a main body, a plurality of air-permeable nets and ventilation pipes being provided on the top of the main body, the interior of the main body being divided into three accommodating chambers by a partition, a first drawer, a second drawer and a third drawer being slidably arranged in the three accommodating chambers, respectively, water and an ammonium sulfate non-woven fabric bag being added in the first drawer and the third drawer, and an activated carbon non-woven fabric bag being placed in the second drawer.

[0009] Preferably, the main body is made of acrylic plate material.

[0010] Preferably, the tops of the first drawer, the second drawer and the third drawer are all provided with the air-permeable net; and the tops of the first drawer and the third drawer are both connected to one of the ventilation pipes.

[0011] Preferably, a low-pressure fan is provided inside the ventilation duct, and the low-pressure fan is driven by a built-in battery or an external power supply.

[0012] Preferably, liquid level lines are engraved on the front panels of the first drawer and the third drawer.

[0013] Preferably, colorimetric card strips are provided on the front panels of the first drawer and the third drawer.

[0014] Preferably, handles are provided on the front panels of the first drawer, the second drawer and the third drawer; and a handle is provided on the top of the main body.

[0015] Preferably, ammonium sulfate is added into the ammonium sulfate non-woven fabric bag; a side bag is also sewn into the ammonium sulfate non-woven fabric bag, and methyl orange is added into the side bag.

[0016] Preferably, the ammonium sulfate non-woven fabric bag and the activated carbon non-woven fabric bag are marked with different colors.

[0017] Compared with the prior art, the beneficial technical effects of the present invention are:

[0018] The present invention discloses a device for quickly removing formaldehyde and VOC with a replaceable filter element, comprising a main body, wherein a first drawer, a second drawer and a third drawer are arranged on the main body, a breathable net and a ventilation pipe are provided on the top of the main body, water, an ammonium sulfate non-woven fabric bag and a methyl orange non-woven fabric bag are added in the first drawer and the third drawer; an activated carbon non-woven fabric bag is added in the second drawer;

[0019] 1) The overall structure is simple, easy to make, and low cost; it is easy to carry and can be mastered without systematic learning, and it is easy to use;

[0020] 2) The interior of the main body is divided into three accommodating chambers by a partition, which do not interfere with each other and will not affect the absorption of pollutants and purification of the air;

[0021] 3) Use ammonium sulfate solution combined with activated carbon to absorb formaldehyde and VOC in the air to improve the purification effect;

[0022] 4) Ammonium sulfate solution reacts with formaldehyde to produce sulfuric acid of very low concentration, which is non-volatile and non-strongly oxidizing and has little impact on human health.

[0023] The invention has a simple overall structure, is easy to manufacture, has a low cost, and is easy to use. The interior is divided into three accommodating chambers by a partition, and the fillers in each accommodating chamber do not interfere with each other, and will not affect each other's absorption of pollutants and air purification. The ammonium sulfate solution is combined with activated carbon to absorb formaldehyde and VOC in the air, thereby improving the purification effect. The product of the ammonium sulfate solution absorbing formaldehyde is sulfuric acid with a very low concentration, which is non-volatile and non-strongly oxidizing, thereby avoiding secondary pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of a device for quickly removing formaldehyde and VOCs with a replaceable filter element according to the present invention;

[0026] Figure 2 It is a schematic structural diagram of the ammonium sulfate non-woven fabric bag of the present invention.

[0027] Description of reference numerals: 1. main body; 2. first drawer; 3. second drawer; 4. third drawer; 5. ammonium sulfate non-woven fabric bag; 6. activated carbon non-woven fabric bag; 7. liquid level line; 8. handle;

[0028] 101. Breathable mesh; 102. Ventilation duct; 103. Low-pressure fan; 501. Side pocket. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] like Figure 1-2 As shown, a device with replaceable filter element for quickly removing formaldehyde and VOC comprises a main body 1, a plurality of air-permeable nets 101 and ventilation pipes 102 are provided on the top of the main body 1, the interior of the main body 1 is divided into three accommodating chambers by a partition, a first drawer 2, a second drawer 3 and a third drawer 4 are slidably arranged in the three accommodating chambers, water and ammonium sulfate non-woven fabric bags 5 are added to the first drawer 2 and the third drawer 4, an activated carbon non-woven fabric bag 6 is placed in the second drawer 3.

[0031] Specifically, the main body 1 is made of acrylic plate material; the acrylic plate has good acid corrosion resistance and light transmittance, which is convenient for observing the internal solution condition.

[0032] Specifically, the tops of the first drawer 2 , the second drawer 3 and the third drawer 4 are all provided with the breathable net 101 ; the tops of the first drawer 2 and the third drawer 4 are both connected to a ventilation pipe 102 .

[0033] Specifically, a low-pressure fan 103 is disposed inside the ventilation pipe 102, and the low-pressure fan 103 is driven by a built-in battery or an external power source; the low-pressure fan 103 can effectively enhance air flow and increase the rate at which the solution absorbs formaldehyde in the air.

[0034] Specifically, a liquid level line 7 is engraved on the front panels of the first drawer 2 and the third drawer 4. The provision of the liquid level line 7 makes it easier for users to understand the water consumption.

[0035] Specifically, the front panels of the first drawer 2 and the third drawer 4 are both provided with colorimetric card strips; the use status of the solution is judged by comparing the colorimetric card strips on the front panels with the internal solution.

[0036] Specifically, handles 8 are provided on the front panels of the first drawer 2, the second drawer 3 and the third drawer 4; a handle is provided on the top of the main body 1; the handle 8 is used to pull out the drawer to facilitate adding and replacing internal additives, and the handle is convenient for transferring the device.

[0037] Specifically, Figure 2As shown, ammonium sulfate is added to the ammonium sulfate non-woven bag 5; a side bag 501 is also sewn in the ammonium sulfate non-woven bag 5, and methyl orange is added to the side bag 501; since the pH value of the ammonium sulfate solution will decrease after absorbing polluted formaldehyde and other VOC gases, and methyl orange will show different colors at different pH values; therefore, the specific condition of the ammonium sulfate solution can be detected in this way to determine whether a new solution needs to be replaced.

[0038] Specifically, the ammonium sulfate non-woven fabric bag 5 and the activated carbon non-woven fabric bag 6 are marked with different colors for easy distinction.

[0039] The use process of the present invention is as follows:

[0040] Example 1

[0041] The width of the main body 1 is 8 cm, the height is 14 cm, the total length is 28 cm, and the liquid level line is 8 cm; about 51.2 ml of water and an ammonium sulfate non-woven bag 5 containing 40 g of ammonium sulfate and 0.05 g of methyl orange are added to the first drawer 2 and the third drawer 4; a 10 cm × 8 cm × 8 cm activated carbon bag is added to the second drawer 3; the first drawer 2, the second drawer 3 and the third drawer 4 are loaded into the main body 1, and the main body 1 is placed in the environment to be purified, and the low-pressure fan 103 is turned on;

[0042] At the beginning, the ammonium sulfate solution is yellow. After absorbing formaldehyde to generate H2SO4, the pH decreases and the color gradually deepens from yellow. When it turns red, the ammonium sulfate solution should be replaced. By observing the color of the ammonium sulfate solution and comparing it with the colorimetric card strip on the front panel, it can be intuitively determined whether the solution needs to be replaced.

[0043] In a specific test operation, the test points are several closed cabinets in the new center, and the control variable method is used for testing. The test data is shown in Table 1:

[0044] Table 1 Air purification process measurement data table

[0045]

[0046] The control group is measured in an empty state, that is, no purification is placed; according to the GB / T18883-2022 indoor air quality standard, the indoor formaldehyde (HCHO) concentration is ≤0.08mg / m 3 ; TVOC≤0.60mg / m 3 .

[0047] It can be seen that both ammonium sulfate solution and activated carbon have a purification effect on formaldehyde and VOC, and the present invention combines the two methods to further enhance the purification effect and shorten the purification time.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0049] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A device for quickly removing formaldehyde and VOC with a replaceable filter element, characterized in that: The invention comprises a main body (1), wherein a plurality of air-permeable nets (101) and ventilation pipes (102) are provided on the top of the main body (1), wherein the interior of the main body (1) is divided into three accommodating chambers by a partition, wherein a first drawer (2), a second drawer (3) and a third drawer (4) are slidably arranged in the interiors of the three accommodating chambers, respectively, wherein water and an ammonium sulfate non-woven fabric bag (5) are added into the first drawer (2) and the third drawer (4), and an activated carbon non-woven fabric bag (6) is placed in the interior of the second drawer (3).

2. The device for quickly removing formaldehyde and VOC with a replaceable filter element according to claim 1, characterized in that: The main body (1) is made of acrylic plate material.

3. The device for quickly removing formaldehyde and VOC with a replaceable filter element according to claim 1, characterized in that: The tops of the first drawer (2), the second drawer (3) and the third drawer (4) are all provided with the air-permeable net (101); the tops of the first drawer (2) and the third drawer (4) are both connected to a ventilation pipe (102).

4. The device for quickly removing formaldehyde and VOC with a replaceable filter element according to claim 3, characterized in that: A low-pressure fan (103) is arranged inside the ventilation pipe (102), and the low-pressure fan (103) is driven by a built-in battery or an external power supply.

5. The device for quickly removing formaldehyde and VOC with a replaceable filter element according to claim 1, characterized in that: Liquid level lines (7) are engraved on the front panels of the first drawer (2) and the third drawer (4).

6. The device for quickly removing formaldehyde and VOC with a replaceable filter element according to claim 1, characterized in that: Colorimetric card strips are provided on the front panels of the first drawer (2) and the third drawer (4).

7. The device for quickly removing formaldehyde and VOC with a replaceable filter element according to claim 1, characterized in that: The front panels of the first drawer (2), the second drawer (3) and the third drawer (4) are all provided with handles (8); and the top of the main body (1) is provided with a handle.

8. The device for quickly removing formaldehyde and VOC with a replaceable filter element according to claim 1, characterized in that: Ammonium sulfate is added into the ammonium sulfate non-woven fabric bag (5); a side bag (501) is also sewn into the ammonium sulfate non-woven fabric bag (5), and methyl orange is added into the side bag (501).

9. The device for quickly removing formaldehyde and VOC with a replaceable filter element according to claim 1, characterized in that: The ammonium sulfate non-woven fabric bag (5) and the activated carbon non-woven fabric bag (6) are marked with different colors.

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