A new type of air extraction formaldehyde removal equipment

Abstract

The utility model discloses a novel air draft formaldehyde removal equipment, including the box, the water tank is arranged in the box, the water inlet and the water outlet are arranged on the water tank, the filter box is connected on the upper portion of water tank, the filter box is filled with activated carbon, the filter box bottom surface is breathable, the upper surface middle part is hollowed out, two symmetrical distribution's air door is arranged in the hollowed out area, and the air door is hinged on the filter box upper surface, the filter box top is provided with the box cover, and the box cover is connected with the box, and the box cover is installed with the exhaust fan, and the air inlet pipe is still provided on the box, and one end of air inlet pipe communicates with the outside of box, and the other end is inserted into the bottom of water tank, and the end of air inlet pipe that projects the outside of box is not less than the liquid level in water tank in horizontal height, and the end of air inlet pipe that inserts the bottom of water tank is hinged with the sealing cover, and the sealing cover opens under the suction of exhaust fan. The air containing formaldehyde enters the inside of water tank through air inlet pipe and is absorbed by water body to formaldehyde once, and then is absorbed by activated carbon again, and twice absorption can improve formaldehyde removal efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of formaldehyde removal devices, specifically to a novel formaldehyde removal device using ventilation. Background Technology

[0002] For a long period after a house is renovated, formaldehyde from the building materials will gradually be released and diffuse into the indoor air, harming human health. Opening windows for ventilation and waiting several months before moving in is the most common way to avoid the dangers of formaldehyde. For homeowners who are eager to move in, formaldehyde removal devices can be used to remove formaldehyde and reduce its harmful effects on the body.

[0003] Chinese Patent Application No. 201921746154.X discloses an indoor ventilation formaldehyde removal device, including a base plate. A box is fixedly connected to the center of the top surface of the base plate. An air inlet hose is connected to the top of the left side of the inner cavity of the box. A first horizontal plate is fixedly connected to the left side of the inner cavity of the box and to the bottom of the air inlet hose. A second horizontal plate is fixedly connected to the bottom of the right side of the inner cavity of the box. A ventilation funnel is connected to the left side of the top surface of the second horizontal plate. A vertical plate is installed through the center of the front surface of the box. The vertical plate is connected to a HEPA mesh and an activated carbon mesh via a connecting plate. A water tank is fixedly connected to the left side of the bottom of the inner cavity of the box. A ventilation pipe is connected to the top of the right side of the inner cavity of the water tank. A first through hole is opened at the center of the right side of the inner cavity of the water tank. An exhaust fan is fixedly connected to the bottom of the right side surface of the box. The air inlet of the exhaust fan is connected to the right side of the inner cavity of the box, and the air outlet of the exhaust fan is connected to an exhaust pipe. Air enters through the intake duct, passes through the HEPA filter and activated carbon filter for adsorption, and is finally discharged through the exhaust pipe, thus removing formaldehyde. However, during formaldehyde removal, the air only passes through the HEPA filter and activated carbon filter. The HEPA filter has no adsorption effect on formaldehyde, and the activated carbon filter has limited adsorption capacity. Furthermore, the filtration and adsorption effects of the HEPA and activated carbon filters decrease after a period of operation, requiring replacement. Since both the HEPA and activated carbon filters are mounted on vertical plates connected by connecting plates inside the chamber, and the chamber is further constrained by fixed first and second horizontal plates, with no movable plates visible on the chamber itself, replacing the HEPA and activated carbon filters is extremely inconvenient. Summary of the Invention

[0004] In view of the problems of limited formaldehyde adsorption effect of activated carbon mesh plates in existing technologies and inconvenient replacement of activated carbon mesh plates, this utility model provides a new type of ventilation formaldehyde removal device.

[0005] The objective of this utility model is achieved in the following manner: A novel formaldehyde removal device includes a housing with a water tank inside. The water tank has an inlet and an outlet. A filter box is threadedly connected to the upper part of the water tank. The filter box is filled with activated carbon and has a breathable bottom. The upper surface of the filter box is hollowed out in the middle, with two symmetrically distributed ventilation doors in the hollowed-out area. The ventilation doors are hinged to the upper surface of the filter box. A cover is installed on the top of the filter box and is threadedly connected to the housing. An exhaust fan is installed inside the cover. An air inlet pipe is also installed on the housing. One end of the air inlet pipe is connected to the outside of the housing, and the other end extends into the bottom of the water tank. The horizontal height of the end of the air inlet pipe extending out of the housing is not lower than the liquid level in the water tank. A sealing cap is hinged to the end of the air inlet pipe extending into the bottom of the water tank. The sealing cap is opened by the suction of the exhaust fan.

[0006] There is an air intake gap between the outer wall of the enclosure and the water tank, the air intake pipe is located in the air intake gap, and an air intake mesh cover is installed on the outer wall of the enclosure.

[0007] A sealing ring is installed at the top of the air inlet gap to seal the connection between the filter box and the air inlet gap.

[0008] There are two intake pipes, symmetrically distributed.

[0009] A limiting mechanism is provided between the two vents. The limiting mechanism includes a fixed frame fixedly installed on the upper end of the filter box. A connecting nail passes through the fixed frame. The other end of the connecting nail is fixedly connected to the limiting frame. One side of the limiting frame abuts against the side of the two vents, and the other side presses against the upper surface of the two vents. A spring is sleeved on the outside of the connecting nail. One end of the spring is fixedly connected to the limiting frame, and the other end of the spring is fixedly connected to the fixed frame.

[0010] The limiting frame is an inverted L-shape or a T-shape that is rotated 90° counterclockwise.

[0011] A silicone ring is fixedly connected to the side of the sealing cap near the air intake pipe, and a fixing plate is fixedly connected inside the air intake pipe. A tension spring is provided on the outside of the fixing plate.

[0012] Compared to existing technologies, this invention incorporates a water tank, air inlet pipe, and filter box within the housing. Formaldehyde-containing air is drawn in by an exhaust fan through the air inlet pipe into the water tank, where it undergoes primary absorption by the water. This is followed by secondary absorption by activated carbon, enhancing formaldehyde removal efficiency. Two symmetrically distributed vents are hinged to the upper surface of the filter box. By unscrewing the lid and opening these vents, the activated carbon inside the filter box can be easily replaced. The water tank has an inlet and an outlet for convenient replacement of water saturated with formaldehyde. Continuous formaldehyde absorption is achieved through timely replacement of the activated carbon and / or water. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a cross-sectional view of the present invention.

[0015] Figure 3 This is a schematic diagram showing the connection between the vent and the filter box.

[0016] Figure 4 This is a schematic diagram of the intake pipe.

[0017] Figure 5 yes Figure 3 Enlarged view of a portion of point A in the middle.

[0018] In the diagram: 1. Box body; 2. Water tank; 3. Filter box; 4. Vent door; 5. Activated carbon; 6. Replacement mechanism; 7. Box cover; 8. Fan; 9. Sealing ring; 10. Air inlet hood; 11. Air inlet pipe; 12. Sealing cover; 13. Silicone ring; 14. Fixing plate; 15. Tension spring; 16. Air inlet gap; 61. Fixing bracket; 62. Connecting pin; 63. Limiting bracket; 64. Spring. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. After reading the contents of the present invention, those skilled in the art can make various modifications or alterations to the present invention, and these equivalent forms also fall within the scope defined by the present invention.

[0020] like Figure 1-3 As shown, a novel formaldehyde removal device includes a housing 1, with a water tank 2 inside the housing 1. The water tank 2 has an inlet and an outlet (not shown in the figure; those skilled in the art can set them appropriately according to the dimensions of the housing and water tank). The upper inner wall of the water tank 2 has threads, and the lower outer wall of the filter box 3 has threads. The lower part of the filter box 3 is threaded to the upper part of the water tank 2. The filter box 3 is filled with activated carbon 5. The bottom of the filter box 3 is breathable, and the middle of the upper surface is hollow. Two symmetrically distributed vent doors 4 are set in the hollow area. The vent doors 4 are hinged to the upper surface of the filter box. Under the strong suction of the exhaust fan, the gas can pass through the vent doors 4, while the activated carbon will be blocked by the vent doors 4 in the filter box 3, avoiding the loss of activated carbon caused by the exhaust fan and the possible impact on the exhaust fan. A cover 7 is provided above the filter box 3. The cover 7 is threaded to the upper end of the box body 1. An exhaust fan 8 is installed inside the cover 7. An air inlet pipe 11 is also provided on the box body 1. One end of the air inlet pipe 11 is connected to the outside of the box body 1, and the other end extends into the bottom of the water tank 2. The horizontal height of the end of the air inlet pipe 11 extending out of the box body is not lower than the liquid level in the water tank. A sealing cover 12 is hinged to the end of the air inlet pipe 11 extending into the bottom of the water tank. The sealing cover 12 is opened by the suction of the exhaust fan 8.

[0021] When in use, start the exhaust fan 8. The exhaust fan 8 generates suction force to draw out the gas inside the chamber 1. When the air pressure inside the chamber 1 and water tank 2 decreases, atmospheric pressure forces the formaldehyde-containing indoor air into the air inlet pipe 11. The airflow pushes the sealing cover 12 to flip, and the airflow enters the water inside the water tank 2. The formaldehyde carried in the airflow is absorbed by the water in the water tank 2, achieving formaldehyde removal in one step. After the formaldehyde removal in one step, the airflow continues to rise under the suction of the exhaust fan and enters the activated carbon 5 in the filter box 3. The activated carbon 5 absorbs the formaldehyde that was not completely absorbed in the airflow for a second time, thereby effectively improving the formaldehyde removal efficiency.

[0022] After prolonged use, the activated carbon will become saturated. Unscrew the lid 7 to open it, then open the vent 4 to replace the activated carbon 5 inside the filter box 3. Alternatively, after opening the lid 7, unscrew the filter box 3 and remove it from the top of the water tank along with the vent 4. Then open the vent 4 to replace the activated carbon 5 inside the filter box 3. The water in the tank will also become saturated after absorbing formaldehyde for a certain period. The saturated liquid will be discharged through the outlet, and fresh water will be introduced through the inlet to achieve continuous formaldehyde absorption.

[0023] Furthermore, there is an air inlet gap 16 between the outer wall of the box 1 and the water tank, and the air inlet pipe 11 is located in the air inlet gap 16. An air inlet mesh cover 10 is installed on the outer wall of the box 1. The air inlet mesh cover 10 can block impurities such as flying fluff in the air from entering the air inlet pipe 11.

[0024] A sealing ring 9 is installed at the top of the air inlet gap 16. The sealing ring 9 seals the connection between the filter box 3 and the air inlet gap 16 to prevent the air entering the box from directly entering the activated carbon in the filter box 3 without being adsorbed by water.

[0025] There are two air intake pipes 11, symmetrically distributed. Multiple air intake pipes 11 can also be evenly distributed; however, this requires a more powerful exhaust fan. Using two or more air intake pipes results in higher formaldehyde removal efficiency.

[0026] like Figure 5 As shown, a limiting mechanism 6 is provided between the two vent doors 4. The limiting mechanism 6 includes a fixing frame 61 fixedly mounted on the upper end of the filter box 3. A connecting nail 62 passes through the fixing frame 61, and the other end of the connecting nail 62 is fixedly connected to a limiting frame 63. One side of the limiting frame 63 abuts against the side of the two vent doors 4, and the other side presses against the upper surface of the two vent doors. A spring 64 is sleeved on the outside of the connecting nail 62. One end of the spring 64 is fixedly connected to the limiting frame 63, and the other end of the spring 64 is fixedly connected to the fixing frame 61. The limiting frame 63 is an inverted L-shape or a T-shape rotated 90° counterclockwise. The limiting mechanism 6 limits the two vent doors 4 to prevent them from flipping under the strong suction of the exhaust fan and interfering with the exhaust fan.

[0027] like Figure 4 As shown, a silicone ring 13 is fixedly connected to the side of the sealing cover 12 near the air intake pipe 11. A fixing plate 14 is fixedly connected inside the air intake pipe 11, and a tension spring 15 is provided on the outer side of the fixing plate 14. The silicone ring 13 ensures the sealing of the air intake pipe, allowing the sealing cover to be opened smoothly under the action of the exhaust fan. When there is no suction force, the presence of the tension spring 15 can cause the sealing cover 12 to return to its original position and close.

[0028] Furthermore, an exhaust fan is installed at the air intake end of the air intake pipe to increase the suction force on indoor air, allowing air to enter the activated carbon 5 in the water tank 2 and filter box 3 more smoothly.

[0029] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. A novel formaldehyde extraction device, comprising a housing (1), characterized in that: The housing (1) contains a water tank (2) with an inlet and an outlet. A filter box (3) is threaded onto the upper part of the water tank (2). Activated carbon (5) is filled inside the filter box (3). The bottom of the filter box (3) is ventilated, and the middle of the upper surface is hollowed out. Two symmetrically distributed vent doors (4) are set in the hollowed-out area. The vent doors (4) are hinged to the upper surface of the filter box (3). A cover (7) is set on the top of the filter box (3). The cover (7) is connected to the housing (1). 1) Threaded connection, an exhaust fan (8) is installed inside the box cover (7), and an air inlet pipe (11) is also provided on the box body (1). One end of the air inlet pipe (11) is connected to the outside of the box body (1), and the other end extends into the bottom of the water tank (2). The horizontal height of the end of the air inlet pipe (11) extending out of the box body is not lower than the liquid level in the water tank. The end of the air inlet pipe (11) extending into the bottom of the water tank is hinged with a sealing cover (12). The sealing cover (12) is opened under the suction action of the exhaust fan (8).

2. The novel formaldehyde removal equipment according to claim 1, characterized in that: There is an air inlet gap (16) between the outer wall of the box (1) and the water tank. The air inlet pipe (11) is located in the air inlet gap (16). An air inlet mesh cover (10) is installed on the outer wall of the box (1).

3. The novel formaldehyde removal equipment according to claim 2, characterized in that: A sealing ring (9) is provided at the top of the air inlet gap (16), and the sealing ring (9) seals the connection between the filter box (3) and the air inlet gap (16).

4. The novel formaldehyde removal equipment according to claim 1, characterized in that: There are two intake pipes (11), which are symmetrically distributed.

5. The novel formaldehyde removal equipment according to claim 1, characterized in that: A limiting mechanism (6) is provided between the two vents (4). The limiting mechanism (6) includes a fixed frame (61) fixedly installed on the upper end of the filter box (3). A connecting nail (62) is passed through the fixed frame (61). The other end of the connecting nail (62) is fixedly connected to the limiting frame (63). One side of the limiting frame (63) abuts against the side of the two vents (4), and the other side presses against the upper surface of the two vents. A spring (64) is sleeved on the outside of the connecting nail (62). One end of the spring (64) is fixedly connected to the limiting frame (63), and the other end of the spring (64) is fixedly connected to the fixed frame (61).

6. The novel formaldehyde removal equipment according to claim 5, characterized in that: The limiting frame (63) is an inverted L-shape or a T-shape that is rotated 90° counterclockwise.

7. The novel formaldehyde removal equipment according to claim 4, characterized in that: A silicone ring (13) is fixedly connected to the side of the sealing cap (12) near the air intake pipe (11), and a fixing plate (14) is fixedly connected inside the air intake pipe (11), and a tension spring (15) is provided on the outside of the fixing plate (14).

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