Formaldehyde-removing dehumidizer and preparation method thereof

Abstract

The invention relates to the technical field of air purification, in particular to a formaldehyde-removing dehumidizer which comprises the following raw material components in percentage by weight: 92-98% of a water absorbent; 1%-5% of an aldehyde removal raw material; according to the invention, the water absorbent is adopted as a main raw material and is matched with a proper amount of the formaldehyde removal raw material and the water locking agent, so that the dual requirements of indoor formaldehyde removal and dehumidification are met at the same time.

Description

Technical Field

[0001] This invention relates to the field of air purification technology, specifically to a formaldehyde-removing and dehumidifying agent and its preparation method. Background Technology

[0002] Indoor air quality directly impacts human health, with formaldehyde pollution and dampness being two common environmental hazards. Formaldehyde, a volatile organic compound, is widely found in building materials, furniture, paints, and other products. Long-term exposure can damage the respiratory and immune systems, and even induce cancer, seriously threatening human health. Indoor dampness easily breeds mold and bacteria, which not only damages furniture and walls but also exacerbates the release of formaldehyde and other harmful substances, further worsening indoor air quality.

[0003] Currently, most air purification products on the market are single-function, either only capable of removing formaldehyde or only capable of dehumidifying, making it difficult to simultaneously meet the dual needs of indoor formaldehyde removal and dehumidification. For example, traditional formaldehyde removal products such as activated carbon and formaldehyde removal sprays can adsorb or decompose some formaldehyde, but they do not have dehumidification capabilities; while dehumidification products such as dehumidifiers and dehumidification boxes mainly focus on absorbing moisture from the air, and have almost no purification effect on harmful substances such as formaldehyde. Summary of the Invention

[0004] In view of the shortcomings of the prior art and to overcome the defects of the prior art, the present invention aims to provide a formaldehyde removal and dehumidification agent and its preparation method, so as to solve the problems mentioned in the background art.

[0005] The technical solution is a formaldehyde removal and dehumidifying agent, comprising the following raw material components by weight percentage: water absorbent 92%-98%; Formaldehyde removal materials: 1%-5%; Water-locking agent 1%-3%.

[0006] The method for preparing a formaldehyde-removing and dehumidifying agent: S1: Mix the water absorbent and water-locking agent thoroughly; S2: Injection-molded water box; S3: Install a partition plate inside the water tank to divide the water tank into two cavities; S4: Fill, weigh, and mix the water-absorbing agent and water-locking agent evenly in a cavity; S5: Fill another cavity with formaldehyde removal material; S6: Seal the opening of the water box with white film; S7: Seal the opening of the water box with aluminum foil.

[0007] Preferably, the method further includes the following steps: S8: Label the water box after sealing with aluminum foil; S9: Date coding is applied to the labeled water boxes; S10: Press the cap onto the water tank after coding; S11: Apply a film to the water tank after the cap is pressed; S12: Pack the coated water boxes into boxes.

[0008] Preferably, the water box includes a box body, and an isolation plate for dividing the internal space of the box body into an upper cavity and a lower cavity is fixedly connected to the upper part of the box body. The gap between the isolation plate and the edge of the opening of the box body forms the opening of the lower cavity. The bottom of the isolation plate is made of waterproof and breathable material, and a baffle is provided below the isolation plate to prevent gas below the isolation plate from flowing to the opening.

[0009] Preferably, the partition plate has a concave structure, and a portion of the side surface of the partition plate is in seamless contact with the inner side surface of the box.

[0010] Preferably, the bottom of the isolation plate has ventilation holes, and the isolation plate is provided with an isolation membrane made of waterproof and breathable material for sealing the ventilation holes.

[0011] Preferably, the box body has several partition plates installed in the lower cavity, each partition plate is arranged along the length of the opening, and there is a gap between each partition plate and the bottom of the isolation plate.

[0012] Preferably, the edges of the opening and the edges of the box opening are located on the same plane.

[0013] Preferably, the white membrane seals the two cavities into two independent cavities.

[0014] This invention provides a formaldehyde-removing and dehumidifying agent and its preparation method, which has the following advantages compared with the prior art: 1. This invention uses a water-absorbing agent as the main raw material, combined with an appropriate amount of formaldehyde-removing raw material and a water-locking agent. The water-absorbing agent can quickly absorb moisture from the air and solve the problem of indoor humidity; the formaldehyde-removing raw material can efficiently adsorb and decompose formaldehyde, achieving complete removal of formaldehyde. The two work together to meet the dual needs of indoor formaldehyde removal and dehumidification. The addition of the water-locking agent can fix the absorbed moisture, prevent moisture backflow or leakage, and at the same time enhance the molding stability of the water-absorbing agent and extend the product's service life.

[0015] 2. The formaldehyde removal material is independently packaged in the upper cavity. Air enters the upper cavity through the isolation film at the bottom of the isolation plate and the white film at the upper cavity, and comes into contact with the formaldehyde removal material, increasing the contact area between the formaldehyde removal material and the air. At the same time, the calcium chloride in the water absorbent dissolves in water, releasing a large amount of heat and accelerating air flow, thereby allowing the formaldehyde removal material to come into contact with more air, thus increasing the indoor formaldehyde removal effect in many ways. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the water box part of the present invention.

[0017] Figure 2 This is a cross-sectional schematic diagram of the water box section of the present invention.

[0018] Figure 3 This is a three-dimensional schematic diagram of the isolation plate of the present invention.

[0019] Figure 4 This is a three-dimensional schematic diagram of the box body of the present invention.

[0020] Figure 5 This is a three-dimensional schematic diagram of the water box of the present invention.

[0021] In the diagram: 1 Water box, 1.1 Box body, 1.2 Divider plate, 2 Isolation plate, 3 Opening, 4 Baffle, 5 Vent hole, 6 Isolation membrane, 7 White membrane, 8 Aluminum membrane, 9 Upper cavity, 10 Lower cavity. Detailed Implementation

[0022] The technical solutions of various embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] The present invention will be further described in detail below through specific embodiments.

[0024] Example 1 This invention provides a technical solution: a formaldehyde-removing and dehumidifying agent, comprising the following raw material components by weight percentage: water absorbent 95%; Formaldehyde removal raw materials 3%; Water-locking agent 2%.

[0025] The sum of the weight percentages of all components is 100%.

[0026] Its preparation method includes the following steps: S1: Mix the water absorbent and water-locking agent evenly, wherein the water absorbent and water-locking agent of the above weight percentage are mixed and placed in a mixing device until they are evenly mixed to obtain a mixture. S2: Injection-molded water box 1, wherein the injection molding process is used to inject polyethylene plastic raw material into the mold of water box 1, and after cooling and demolding, water box 1 is obtained; S3: Install the partition plate 2 inside the water box 1 and divide the water box 1 into two cavities; S4: Fill, weigh and mix the water-absorbing agent and water-locking agent evenly in a cavity. After the water-absorbing agent and water-locking agent mixture is filled, weigh it to ensure that the filling amount meets the preset standard. S5: Fill another cavity with formaldehyde removal material; S6: Seal the white film 7 at the opening of water box 1. The white film 7 is sealed to the edge of the opening of water box 1 by heat sealing process, so that the two cavities are sealed into independent spaces. S7: Seal the opening of the water box 1 with aluminum film 8, which covers the outside of the white film 7 and then seals it again with heat sealing process. Aluminum film 8 can enhance the sealing and light protection of the packaging and extend the shelf life of the product.

[0027] Please refer to Figure 1-5 The water box 1 includes a box body 1.1. An isolation plate 2 is glued and fixed to the upper part of the box body 1.1 to divide the internal space of the box body 1.1 into an upper cavity 9 and a lower cavity 10. The gap between the isolation plate 2 and the opening edge of the box body 1.1 forms the opening 3 of the lower cavity 10. The bottom of the isolation plate 2 is made of waterproof and breathable material. A baffle 4 is set below the isolation plate 2 to prevent gas below the isolation plate 2 from flowing to the opening 3. The baffle 4 and the isolation plate 2 are an integral structure.

[0028] The absorbent is one or a mixture of calcium chloride, magnesium chloride, and silica gel, preferably calcium chloride, which has extremely strong hygroscopic properties and can quickly absorb moisture from the air. The water-locking agent is one or a mixture of sodium polyacrylate and sodium carboxymethyl cellulose. The water-locking agent can fix the absorbed moisture in the system, prevent moisture backflow or leakage, and at the same time enhance the molding stability of the absorbent, preventing the absorbent from loosening and falling off due to moisture absorption.

[0029] The formaldehyde removal raw materials are one or more of potassium permanganate, modified activated carbon, photocatalyst, and amine compounds, preferably potassium permanganate, which has strong oxidizing properties and can react with formaldehyde to produce carbon dioxide and water.

[0030] White membrane 7 is a waterproof and breathable membrane, specifically one of PTFE microporous membrane, polyolefin microporous membrane, or PU microporous membrane.

[0031] The formaldehyde removal material is filled into the upper cavity 9, while the water-absorbing agent and water-locking agent are mixed and filled into the lower cavity 10 through the opening 3. During use, the aluminum film 8 is torn open, and air enters the lower cavity 10 sequentially through the white film 7 and the opening 3. The water-absorbing agent and water-locking agent work together to absorb moisture from the air, solving the indoor humidity problem. Simultaneously, calcium chloride dissolves in water, releasing a large amount of heat during the dissolution process. The hot air rises, and due to the obstruction of the baffle 4, it rises and enters the upper cavity 9 through the bottom of the isolation plate 2, thus contacting the formaldehyde removal material. Furthermore, air can also directly enter the upper cavity 9 through the white film 7, increasing the contact area between the formaldehyde removal material and the air. The increased temperature accelerates airflow, allowing the formaldehyde removal material to come into contact with more air, thereby enhancing the indoor formaldehyde removal effect in multiple ways.

[0032] Furthermore, the partition plate 2 has a concave structure, and part of the side surface of the partition plate 2 is in seamless contact with the inner side surface of the box 1.1. This structure can enhance the stability of the partition plate 2 installed in the box 1.1 and facilitate the bonding and fixing of the partition plate 2 to the box 1.1.

[0033] Furthermore, ventilation holes 5 are opened at the bottom of the isolation plate 2, and an isolation membrane 6 made of waterproof and breathable material is provided on the isolation plate 2 to seal the ventilation holes 5. One of the following is provided inside the isolation membrane 6: PTFE microporous membrane, polyolefin microporous membrane, and PU microporous membrane. The isolation membrane 6 is located directly below the ventilation holes 5 and is bonded and fixed to the isolation plate 2.

[0034] Furthermore, the box body 1.1 has several partition plates 1.2 installed inside the lower cavity 10. Each partition plate 1.2 is integrally formed with the box body 1.1. The number of partition plates 1.2 can be three, five, seven, or other suitable numbers. Each partition plate 1.2 is arranged along the length of the opening 3. There is a gap between each partition plate 1.2 and the bottom of the partition plate 2. The partition plates 1.2 can divide the lower cavity 10 into multiple small spaces to prevent the concentrated distribution of materials. The spaced arrangement can avoid the partition plates 1.2 from affecting air circulation.

[0035] Furthermore, the edges of the opening 3 are on the same plane as the edges of the opening of the box 1.1. This design facilitates the sealing of the upper cavity 9 and the lower cavity 10 by the white membrane 7.

[0036] Furthermore, it also includes the following steps: S8: Label the water box 1 after sealing with aluminum film 8, and indicate the product name, ingredients, usage method, shelf life and other information on the label; S9: Mark the date on the labeled water box 1, indicating the production date and shelf life; S10: Press the cap onto the water box 1 after coding, press the cap onto the opening of the water box 1 to ensure that the cap is secure and to prevent the aluminum film 8 from being damaged during transportation. S11: After the water tank 1 is capped, a transparent protective film is applied to the outside of the water tank 1 using a film-applying device to further enhance the protective performance of the product. S12: Pack the coated water box 1 into a box to complete the preparation.

[0037] Example 2 Based on implementation one, a formaldehyde removal and dehumidifying agent comprises the following raw material components by weight percentage: water absorbent 92%; Formaldehyde removal materials 5%; 3% water-locking agent.

[0038] The sum of the weight percentages of all components is 100%.

[0039] Example 3 Based on implementation one, a formaldehyde removal and dehumidifying agent comprises the following raw material components by weight percentage: water absorbent 98%; Formaldehyde removal raw materials 1%; 1% water-locking agent.

[0040] The sum of the weight percentages of all components is 100%.

[0041] Effect test: Comparative Example 1 The raw materials (calcium chloride, potassium permanganate, and sodium polyacrylate) from Example 1 were directly and physically mixed in the same proportion, then placed into a regular single-chamber box and sealed.

[0042] Comparative Example 2 The mixture of calcium chloride and sodium polyacrylate and potassium permanganate granules were placed in two non-woven bags, with the proportions of each raw material being the same as in Example 1. The two bags were then placed side by side into a large packaging box.

[0043] In the same sealed experimental chamber (1m³), the initial humidity was controlled at 80%RH, the initial formaldehyde concentration was 1.0mg / m³, and the temperature was 25℃. The products of Examples 1-3 and Comparative Examples 1-2 (equal total raw material amount) were placed in the chamber, and the humidity and formaldehyde concentration were tested after 24 hours.

[0044] Table 1: Comparison of Effect Tests between Examples and Comparative Examples

[0045] Test results show that the products of Examples 1 to 3 of this invention are significantly superior to the comparative examples in both dehumidification and formaldehyde removal efficiency. In particular, the products of this invention enhance the formaldehyde removal effect through structural design. Comparative Example 1 suffered from severe mutual interference and failure due to direct mixing, while Comparative Example 2, although physically separated, lacked design considerations for the contact between the gas and the formaldehyde removal material, making the formaldehyde removal agent still susceptible to environmental influences.

[0046] The present invention has been described in detail above through specific embodiments and examples, but these are not intended to limit the invention. Many modifications and improvements can be made by those skilled in the art without departing from the principles of the invention, and these should also be considered within the scope of protection of the present invention.

Claims

1. A formaldehyde-removing and dehumidifying agent, characterized in that: The raw material components include the following weight percentages: water absorbent 92%-98%; Formaldehyde removal materials: 1%-5%; Water-locking agent 1%-3%.

2. The method for preparing a formaldehyde-removing and dehumidifying agent according to claim 1, characterized in that: S1: Mix the water absorbent and water-locking agent thoroughly; S2: Injection-molded water box (1); S3: Install a partition plate (2) inside the water box (1) and divide the water box (1) into two cavities; S4: Fill, weigh, and mix the water-absorbing agent and water-locking agent evenly in a cavity; S5: Fill another cavity with formaldehyde removal material; S6: Seal the opening of the water box (1) with white film (7); S7: Seal the opening of the water box (1) with aluminum film (8).

3. The method for preparing a formaldehyde-removing and dehumidifying agent according to claim 2, characterized in that: It also includes the following steps: S8: Label the water box (1) after sealing with aluminum film (8); S9: Date coding is performed on the labeled water box (1); S10: Press the cap onto the water box (1) after marking; S11: Cover the water box (1) with a film after the cap is pressed; S12: Pack the coated water box (1) into a box.

4. The method for preparing a formaldehyde-removing and dehumidifying agent according to claim 2, characterized in that: The water box (1) includes a box body (1.1). The upper part of the box body (1.1) is fixedly connected to an isolation plate (2) for dividing the space inside the box body (1.1) into an upper cavity (9) and a lower cavity (10). The gap between the isolation plate (2) and the opening edge of the box body (1.1) forms the opening (3) of the lower cavity (10). The bottom of the isolation plate (2) is made of waterproof and breathable material. A baffle (4) is provided below the isolation plate (2) to block the gas below the isolation plate (2) from flowing to the opening (3).

5. The method for preparing a formaldehyde-removing and dehumidifying agent according to claim 4, characterized in that: The isolation plate (2) has a concave structure, and a portion of the side surface of the isolation plate (2) is in seamless contact with the inner side surface of the box body (1.1).

6. The method for preparing a formaldehyde-removing and dehumidifying agent according to claim 4, characterized in that: The bottom of the isolation plate (2) has ventilation holes (5), and the isolation plate (2) is provided with an isolation membrane (6) made of waterproof and breathable material for sealing the ventilation holes (5).

7. The method for preparing a formaldehyde-removing and dehumidifying agent according to claim 4, characterized in that: The box body (1.1) has several partition plates (1.2) installed in the lower cavity (10). Each partition plate (1.2) is arranged along the length of the opening (3), and there is a gap between each partition plate (1.2) and the bottom of the isolation plate (2).

8. The method for preparing a formaldehyde-removing and dehumidifying agent according to claim 4, characterized in that: Each edge of the opening (3) and each edge of the opening of the box (1.1) are located on the same plane.

9. The method for preparing a formaldehyde-removing and dehumidifying agent according to claim 2, characterized in that: The white membrane (7) seals the two cavities into two independent cavities.

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