CN218944734U

CN218944734U - Formaldehyde removing device

Info

Publication number: CN218944734U
Application number: CN202221203211.1U
Authority: CN
Inventors: 李帆; 盛航伟; 裘洪梅
Original assignee: Dalian University
Current assignee: Dalian University
Priority date: 2022-05-19
Filing date: 2022-05-19
Publication date: 2023-05-02
Anticipated expiration: 2032-05-19

Abstract

The utility model discloses a formaldehyde removing device, which belongs to the technical field of formaldehyde removal and comprises a box body with a hollow inside, wherein an air inlet pipe, a container and an air outlet pipe are arranged in the box body, and a biological enzyme formaldehyde scavenger is contained in the container; a through hole a is formed in one side wall body of the box body, the inlet end of the air inlet pipe is arranged in the through hole a, the outlet end of the air inlet pipe extends into the container and is positioned below the liquid level of the biological enzyme formaldehyde scavenger, a filter screen is arranged in the air inlet pipe, and the filter screen is made of chitosan/activated carbon fiber composite material; the other side wall of the box body is provided with a through hole b, the outlet end of the air outlet pipe is arranged in the through hole b, the inlet end of the air outlet pipe is communicated with the container and is positioned above the liquid level of the biological enzyme formaldehyde scavenger, and a photocatalyst and an ultraviolet lamp tube for activating the photocatalyst are arranged in the air outlet pipe. The utility model degrades formaldehyde in multiple layers, purifies air, enables formaldehyde to be removed more thoroughly, and improves formaldehyde removal efficiency.

Description

Formaldehyde removing device

Technical Field

The utility model belongs to the technical field of formaldehyde removal, and particularly relates to a formaldehyde removal device for realizing multi-layer removal.

Background

Formaldehyde belongs to one of the pollutants strictly regulated by indoor air quality standards and is classified as a class of carcinogens by the international agency for research on cancer (IARC) and the World Health Organization (WHO).

Materials such as equipment and coating used in new decoration houses contain a large amount of formaldehyde, and can release continuously along with time, are difficult to automatically remove, and current formaldehyde remove device is weaker in interactive experience, and whether the consumer is difficult to know formaldehyde and clears away safe numerical value to influence consumer health. Most of the prior formaldehyde removing devices have single use technology, and have low formaldehyde removing efficiency and are not thorough.

Disclosure of Invention

In order to overcome the defects of low formaldehyde removal efficiency and incomplete formaldehyde removal caused by single use technology of the existing formaldehyde removal device, the utility model provides the formaldehyde removal device which can degrade formaldehyde in multiple layers and purify air, so that formaldehyde is removed more thoroughly, and the formaldehyde removal efficiency is improved.

The utility model adopts the technical proposal for solving the technical problems that: the formaldehyde removing device comprises a hollow box body, wherein an air inlet pipe, a container and an air outlet pipe are arranged in the box body, and a biological enzyme formaldehyde scavenger is contained in the container; a through hole a is formed in one side wall body of the box body, the inlet end of the air inlet pipe is arranged in the through hole a, the outlet end of the air inlet pipe extends into the container and is positioned below the liquid level of the biological enzyme formaldehyde scavenger, a filter screen is arranged in the air inlet pipe, and the filter screen is made of chitosan/activated carbon fiber composite material; the other side wall of the box body is provided with a through hole b, the outlet end of the air outlet pipe is arranged in the through hole b, the inlet end of the air outlet pipe is communicated with the container and is positioned above the liquid level of the biological enzyme formaldehyde scavenger, and a photocatalyst and an ultraviolet lamp tube for activating the photocatalyst are arranged in the air outlet pipe.

As a further embodiment of the utility model, the container is communicated with a feeding pipe, the bottom end of the feeding pipe is positioned in the container, the top end of the feeding pipe is arranged in a through hole c formed in the side wall of the top of the box body, and a feeding pipe cover is arranged at the port of the top end of the feeding pipe.

As a further embodiment of the utility model, the bottom of the container is connected with a discharging pipe, the outlet end of the discharging pipe extends out of the side wall of the box body, and a valve is arranged at the outlet end of the discharging pipe.

As a further embodiment of the utility model, the inlet end pipe orifice of the air inlet pipe is provided with an air suction fan, and the outlet end pipe orifice of the air outlet pipe is provided with an air exhaust fan.

As a further embodiment of the utility model, the filter screen and the photocatalyst are respectively arranged in the air inlet pipe or the air outlet pipe in a sliding way through a replacement plate, and the end part of the replacement plate extends out of the side wall of the box body.

As a further implementation scheme of the utility model, a formaldehyde sensor is arranged in the air inlet pipe, the formaldehyde sensor is connected with a display screen, and the display screen is arranged on the outer wall of the box body.

As a further embodiment of the present utility model, the formaldehyde sensor is connected to a controller, and the controller is connected to an extraction fan and an exhaust fan.

The beneficial effects of the utility model include: the air containing formaldehyde firstly removes partial formaldehyde and substances such as dust through the filter screen, then removes formaldehyde deeply through the biological enzyme formaldehyde scavenger, finally thoroughly removes formaldehyde through photocatalyst, discharges clean air, enables formaldehyde to be removed through three layers, improves formaldehyde removal efficiency, and the device has simple and reasonable structure, and multiple layers of formaldehyde degradation and air purification.

Drawings

FIG. 1 is a front view of a formaldehyde removal apparatus of the present utility model;

FIG. 2 is a top view of a formaldehyde removal apparatus of the present utility model;

FIG. 3 is a side view of a formaldehyde removal apparatus of the present utility model.

The reference numerals in the drawings illustrate: 1. the box, 2, the intake pipe, 3, the air extraction fan, 4, formaldehyde sensor, 5, the display screen, 6, the spring base, 7, the spring, 8, ultraviolet bulb, 9, the filter screen, 10, ultraviolet lamp lid, 11, switch, 12, the frame plate, 13, the discharging pipe, 14, container, 15, inlet pipe, 16, inlet pipe lid, 17, photocatalyst, 18, ultraviolet tube, 19, exhaust fan, 20, outlet duct, 21, replacement board, 22, valve.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "horizontal", "inner", "outer", etc., are based on the azimuth or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or component referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," second, "and third" are used merely to distinguish components and should not be construed as indicating or implying relative importance.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Example 1

The formaldehyde removing device comprises a box body 1 with a hollow inside, wherein an air inlet pipe 2, a container 14 and an air outlet pipe 20 are arranged in the box body 1;

specifically, a horizontally arranged frame plate 12 is fixedly connected to the inner wall of one side of the box body 1, a container 14 is arranged on the frame plate 12, and the container 14 contains biological enzyme formaldehyde scavenger; a through hole a is formed in one side wall of the box body 1, the inlet end of the air inlet pipe 2 is arranged in the through hole a, the outlet end of the air inlet pipe 2 extends into the container 14 and is positioned below the liquid level of the biological enzyme formaldehyde scavenger, a filter screen 9 is arranged in the air inlet pipe 2, and the filter screen 9 is made of chitosan/activated carbon fiber composite material; a through hole b is formed in the other side wall of the box body 1, the outlet end of the air outlet pipe 20 is arranged in the through hole b, the inlet end of the air outlet pipe 20 is communicated with the container 14 and is positioned above the liquid level of the biological enzyme formaldehyde scavenger, and a photocatalyst 17 and an ultraviolet lamp 18 for activating the photocatalyst 17 are arranged in the air outlet pipe 20;

in the above embodiment, the air containing formaldehyde firstly enters the air inlet pipe 2, removes part of formaldehyde and substances such as dust adsorption through the filter screen 9, then enters the container 14, deeply removes formaldehyde through the biological enzyme formaldehyde scavenger, finally enters the air outlet pipe 20, thoroughly removes formaldehyde through the photocatalyst 17 activated by the ultraviolet lamp tube 18, discharges clean air, realizes formaldehyde removal through three layers of different technologies, and improves formaldehyde removal efficiency. The ultraviolet lamp tube 18 plays a role in sterilizing air in addition to activating the photocatalyst 17.

A feeding pipe 15 is connected to the container 14, the bottom end of the feeding pipe 15 is positioned in the container 14, the top end of the feeding pipe 15 is arranged in a through hole c formed in the side wall of the top of the box body 1, the container 14 is filled with biological enzyme formaldehyde scavenger or cleaning liquid through the feeding pipe 15 to clean the container 14 which is used for a long time, and a feeding pipe cover 16 is arranged at the port of the top end of the feeding pipe 15;

in the above embodiment, in order to drain the waste liquid, a discharge pipe 13 is connected to the bottom of the container 14, the outlet end of the discharge pipe 13 extends out of the side wall of the tank 1, and a valve 22 is provided at the outlet end of the discharge pipe 13. Through the setting of inlet pipe 15 and discharging pipe 13, make things convenient for the joining of solution and the discharge of waste liquid, it is convenient to use, easy operation improves device work efficiency.

Preferably, the inlet end pipe orifice of the air inlet pipe 2 is provided with an air exhaust fan 3, the outlet end pipe orifice of the air outlet pipe 20 is provided with an air exhaust fan 19, so that the air containing formaldehyde can be quickly reacted and exhausted with the filter screen 9 of the chitosan/activated carbon fiber composite material, the biological enzyme formaldehyde scavenger and the photocatalyst 17, and the air purifying efficiency is improved.

Preferably, the filter screen 9 and the photocatalyst 17 are respectively slidably mounted in the air inlet pipe 2 or the air outlet pipe 20 through a replacement plate 21, and the end part of the replacement plate 21 extends to the outside of the box body 1; after the formaldehyde is absorbed and saturated, the filter screen 9 and the photocatalyst 17 can be replaced by extracting the replacement plate 21 from the outside of the box body 1, so that the operation is simple and convenient, the dismounting device is not needed, and the formaldehyde removal efficiency is ensured.

Preferably, in order to make the device have formaldehyde detection function, a formaldehyde sensor 4 is arranged in the air inlet pipe 2, and the formaldehyde sensor 4 is connected with a display screen 5 for dynamically displaying the detected formaldehyde value on the display screen 5; the display screen 5 is arranged on the outer wall of the box body 1.

In the above embodiment, in order to further enable the whole apparatus to automatically start and stop the air extraction fan 3 and the exhaust fan 19 according to the change of the formaldehyde value, the formaldehyde sensor 4 is connected to the controller for transmitting detection data to the controller, the controller is connected to the air extraction fan 3 and the exhaust fan 19, and when the formaldehyde value detected by the formaldehyde sensor 4 is lower than a certain value, the controller controls the air extraction fan 3 and the exhaust fan 19 to stop working; similarly, when the formaldehyde value detected by the formaldehyde sensor 4 is higher than a certain value, the controller controls the suction fan 3 and the exhaust fan 19 to start operating.

Preferably, in order to make the formaldehyde-containing air primarily sterilized before entering the device, an ultraviolet bulb 8 is arranged in the box body 1, an ejection opening corresponding to the position of the ultraviolet bulb 8 is arranged on the side wall of the top of the box body 1, and an ultraviolet lamp cover 10 is arranged at the ejection opening;

the ultraviolet bulb 8 is arranged on the supporting seat, and a buckle is arranged at the bottom of the supporting seat; a fixed spring base 6 is arranged in the box body 1, a clamping groove is formed in the spring base 6, a buckle at the bottom of the supporting seat is matched and clamped with the clamping groove on the spring base 6, and a spring 7 is arranged between the spring base 6 and the supporting seat; the supporting seat is connected with one end of the switch 11, the other end of the switch 11 extends out of the box body 1, the switch 11 is used for driving the bottom buckle of the supporting seat to be clamped into or separated from the clamping groove of the spring base 6, and the following is concrete: in the initial state, the supporting seat compresses the spring 7 to be clamped with the spring base 6, the ultraviolet bulb 8 is contracted in the box body 1, the switch 11 is pressed, the bottom buckle of the supporting seat is driven to be separated from the clamping groove, the spring 7 is released at the moment, the ultraviolet bulb 8 is popped out of the pop-up port, when the ultraviolet bulb 8 is required to be contracted into the box body 1 again, the ultraviolet bulb 8 is only required to be pressed downwards, the supporting seat compresses the spring 7 downwards at the moment, and the buckle is clamped into the clamping groove.

According to the above embodiment, the ultraviolet bulb 8 located inside the case 1 is ejected outside the case 1 so that the formaldehyde-containing air is first sterilized by the ultraviolet bulb 8 for the first layer before being sucked into the inside of the apparatus, and then sucked into the apparatus again for sterilization at the ultraviolet tube 18 of the air outlet duct 20. The ultraviolet bulb 8 can be conveniently replaced, and the ultraviolet lamp cover 10 can be used for covering the ultraviolet bulb 8 when not in use, so that the ultraviolet bulb 8 is prevented from being damaged, and sundries such as dust and the like are prevented from falling into the box body.

When the device is used, the feed pipe cover 16 is opened first, a proper amount of biological enzyme formaldehyde scavenger is added into the container 14, and the feed pipe cover 16 is covered after the liquid addition is completed. Then the ultraviolet lamp cover 10 is opened, the switch 11 is pressed to eject the ultraviolet lamp 8, and the ultraviolet lamp is sterilized. Then the air extracting fan 3 is turned on, formaldehyde-containing air firstly passes through the formaldehyde sensor 4 to detect the formaldehyde content in real time and uploads the value to the display screen 5 on the outer wall of the box body 1, then sequentially passes through the air inlet pipe 2 provided with the chitosan/activated carbon fiber composite material filter screen 9, the container 14 containing biological enzyme formaldehyde scavenger and the air outlet pipe 20 provided with the photocatalyst 17 activated by the ultraviolet lamp tube 18 to remove multi-level formaldehyde, air is purified, and the purified air is discharged out of the device through the air outlet fan 19 at the mouth of the air outlet pipe 20.

After the device is used for a long time, the filter screen 9 and the photocatalyst 17 are required to be replaced, and the corresponding replacement plate 21 is only required to be pulled out for replacement. After the device is used for a long time, the container 14 is required to be cleaned, the feeding pipe cover 16 is only required to be opened for cleaning liquid feeding during cleaning, the valve 22 is opened after cleaning, and the cleaning liquid flows out from the discharging pipe 13.

The device has the detection function, can detect environmental formaldehyde data in real time, and can clearly see whether formaldehyde is in a safe numerical value. The activated carbon fiber adsorbs a filter screen of chitosan, a biological enzyme formaldehyde scavenger and a photocatalyst are used for degrading formaldehyde in a multi-layer manner, so that formaldehyde scavenging efficiency is improved, and air is purified. The ultraviolet bulb 8 and the ultraviolet tube 18 can eliminate bacteria in the air and further remove formaldehyde. The device has the functions of disinfection and sterilization, formaldehyde detection and formaldehyde removal, improves the working efficiency of the device, and is applicable to diversified places.

The chitosan can react with aldehyde compounds and phenyl compounds rapidly, eliminates harmful substances such as formaldehyde and the like released by the decoration materials, and has good stability and adsorptivity. The chitosan is applied to a filter screen of activated carbon fiber adsorption chitosan, and part of organic substances such as formaldehyde and the like are removed through the filter screen; the chitosan is applied to the biological enzyme formaldehyde scavenger, can be used as a high-quality carrier of biological enzyme, and the formed biological enzyme chitosan structure overcomes the defects of unstable biological enzyme and the like and has higher formaldehyde adsorption and removal capacity.

The biological enzyme is ethanol dehydrogenase extracted from aspergillus oryzae, and is combined with harmful substances such as formaldehyde released by finishing materials, and the formed product is environment-friendly. The alcohol dehydrogenase is applied to the biological enzyme formaldehyde scavenger and chitosan to form a compound, so that the defects of limited absorption capacity, short service life and the like of the chitosan are overcome, the alcohol dehydrogenase can be continuously used, and the formaldehyde removal efficiency is maintained.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims

1. The formaldehyde removing device comprises a box body (1) with a hollow inside, wherein an air inlet pipe (2), a container (14) and an air outlet pipe (20) are arranged in the box body (1), and the formaldehyde removing device is characterized in that a biological enzyme formaldehyde scavenger is contained in the container (14); a through hole a is formed in one side wall body of the box body (1), the inlet end of the air inlet pipe (2) is arranged in the through hole a, the outlet end of the air inlet pipe extends into the container (14) and is positioned below the liquid level of the biological enzyme formaldehyde scavenger, a filter screen (9) is arranged in the air inlet pipe (2), and the filter screen (9) is made of chitosan/activated carbon fiber composite material; the other side wall of the box body (1) is provided with a through hole b, the outlet end of the air outlet pipe (20) is arranged in the through hole b, the inlet end of the air outlet pipe is communicated with the container (14) and is positioned above the liquid level of the biological enzyme formaldehyde scavenger, and the air outlet pipe (20) is internally provided with a photocatalyst (17) and an ultraviolet lamp tube (18) for activating the photocatalyst (17).

2. The formaldehyde removing device according to claim 1, wherein the container (14) is connected with a feeding pipe (15), the bottom end of the feeding pipe (15) is located inside the container (14), the top end of the feeding pipe is installed in a through hole c formed in the side wall of the top of the box body (1), and a feeding pipe cover (16) is arranged at the top end port of the feeding pipe (15).

3. A formaldehyde removal unit according to claim 2, characterized in that the bottom of the container (14) is connected with a discharge pipe (13), the outlet end of the discharge pipe (13) extends out of the side wall of the tank (1), and a valve (22) is provided at the outlet end of the discharge pipe (13).

4. The formaldehyde removing device according to claim 1, wherein the inlet end pipe orifice of the air inlet pipe (2) is provided with an air suction fan (3), and the outlet end pipe orifice of the air outlet pipe (20) is provided with an air exhaust fan (19).

5. The formaldehyde removing device according to claim 1, wherein the filter screen (9) and the photocatalyst (17) are slidably mounted in the air inlet pipe (2) or the air outlet pipe (20) through a replacement plate (21), respectively, and the end of the replacement plate (21) extends out of the side wall of the box body (1).

6. The formaldehyde removing device according to claim 4, wherein a formaldehyde sensor (4) is arranged in the air inlet pipe (2), the formaldehyde sensor (4) is connected with a display screen (5), and the display screen (5) is arranged on the outer wall of the box body (1).

7. The formaldehyde removal apparatus as set forth in claim 6, wherein the formaldehyde sensor (4) is connected to a controller, and the controller is connected to an extraction fan (3) and an exhaust fan (19).