Formaldehyde content detection structure

Abstract

The utility model relates to the technical field of formaldehyde detection, and discloses a formaldehyde content detection structure, which comprises a base and a formaldehyde detection plate main body arranged on the upper surface of the base, the formaldehyde detection plate main body is used for detecting formaldehyde in air, an air inlet assembly is arranged on the base, and the formaldehyde detection plate main body is arranged on the base. The air inlet assembly comprises an annular shell arranged on the upper surface of the base and a cover plate arranged above the annular shell, and an annular sleeve shell is rotationally connected between the outer surface of the annular shell and the outer surface of the cover plate through two sets of sealing bearings. The device can simultaneously collect air samples from all directions, so that the detection speed and efficiency are greatly improved, more comprehensive and representative data can be collected, the accuracy of formaldehyde concentration measurement is improved, and the use effect of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of formaldehyde detection, in particular to a formaldehyde content detection structure. Background Art

[0002] Formaldehyde is a major factor that harms human health, especially children. When decorating a house, many existing materials contain some formaldehyde to varying degrees. Therefore, it is necessary to test the formaldehyde content in the house before moving in.

[0003] Upon investigation, the publication (announcement) number CN212031394U discloses a device for detecting indoor formaldehyde content. This technology discloses "comprising an outer box, a detection channel, a detection board, a display panel, a base, and a lifting frame. The outer box is provided with a detection channel inside, a detection board is provided inside the detection channel, a display panel is provided on one side of the outer box, and the display panel and the detection board are electrically connected. The device has a design in which an electric shaft and fan blades in the detection channel are used to draw gas in the room into the detection channel. The gas passes through the detection board for detection and then flows out of the detection channel. The detection board detects the formaldehyde content in the gas and displays the detection result on the display panel."

[0004] When the above design is in use, although the design of the electric shaft and fan blades in the detection channel can suck the gas in the room into the detection channel, and the gas flows out of the detection channel after being detected by the detection plate, the air sample can only be collected from one fixed direction, which will reduce the speed and efficiency of the detection. The fixed direction of air intake may not fully represent the distribution of formaldehyde in the indoor air, reducing the effectiveness of the device. Therefore, we propose a formaldehyde content detection structure to solve the above problems. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a formaldehyde content detection structure, which solves the problem that air samples can only be collected from one fixed direction, which reduces the speed and efficiency of detection. The fixed direction of air intake may not fully represent the distribution of formaldehyde in the indoor air, reducing the effectiveness of the device.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a formaldehyde content detection structure, comprising a base and a formaldehyde detection board body arranged on the upper surface of the base, the formaldehyde detection board body being used to detect formaldehyde in the air, and an air intake assembly being installed on the base;

[0007] The air intake assembly includes an annular shell provided on the upper surface of the base and a cover plate provided above the annular shell, wherein an annular housing and an outer surface of the cover plate are rotatably connected to each other via two sets of sealing bearings;

[0008] An air intake fan is fixedly mounted on the surface of the annular casing through a through-hole provided thereon, an annular gear plate is fixedly mounted on the upper surface of the annular casing, a helical gear is meshedly connected to the surface of the annular gear plate, a drive motor is fixedly mounted on the inner side wall of the cover plate through a mounting plate, and the helical gear is fixedly mounted on the output end of the drive motor by screws;

[0009] A partition plate 1 is fixed to the lower surface of the cover plate, an annular filter screen for filtering air is fixedly mounted on the lower surface of the partition plate 1, a casing cover is fixed to the lower surface of the annular filter screen, a partition plate 2 is fixedly mounted on the outer surface of the annular filter screen close to the casing cover, and the partition plate 2 is fixed to the upper surface of the annular shell;

[0010] A battery for supplying power to the drive motor is fixedly mounted on the upper surface of the partition plate 1.

[0011] Preferably, the two sets of sealed bearings are respectively arranged on the cover plate and the annular housing, and the lower surface of the housing cover is flush with the lower surface of the annular housing.

[0012] Preferably, the outer surface of the annular shell is fixed with symmetrically arranged elastic lock buckles by bolts, and a locking ear is fixed with bolts on one side of the upper surface of the base close to the elastic lock buckles.

[0013] Preferably, the elastic lock buckle is buckled on the lock ear to connect and lock the annular shell and the base.

[0014] Preferably, symmetrically arranged positioning pins are fixedly mounted on the lower surface of the annular shell, and positioning holes adapted to the positioning pins are provided on the upper surface of the base.

[0015] Preferably, a handle is fixedly mounted on the upper surface of the cover plate.

[0016] Beneficial effects

[0017] The present invention provides a formaldehyde content detection structure. Compared with the prior art, it has the following beneficial effects:

[0018] The formaldehyde content detection structure, through the air intake component, allows the device to collect air samples from all directions simultaneously, which greatly improves the speed and efficiency of detection and can collect more comprehensive and representative data, thereby improving the accuracy of formaldehyde concentration measurement and improving the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the utility model in which the base and the annular shell are separated;

[0021] Figure 3 This is a cross-sectional view of the structure of the annular shell and cover plate and other connecting parts of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the connecting parts such as the partition plate 2 and the shell cover of the utility model.

[0023] In the figure: 1. Base; 2. Formaldehyde detection board body; 3. Air intake assembly; 301. Annular shell; 302. Cover; 303. Handle; 304. Annular casing; 305. Annular gear plate; 306. Bevel gear; 307. Drive motor; 308. Partition 1; 309. Annular filter; 310. Partition 2; 311. Casing cover; 312. Air intake fan; 313. Elastic lock buckle; 314. Lock ear; 315. Positioning pin; 316. Positioning jack. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figure 1 As shown:

[0026] A formaldehyde content detection structure comprises a base 1 and a formaldehyde detection board body 2 arranged on the upper surface of the base 1. The formaldehyde detection board body 2 is used for detecting formaldehyde in the air.

[0027] In this embodiment: the existing device {publication (announcement) number}: CN212031394U discloses an indoor formaldehyde content detection device. The formaldehyde detection board main body 2 in this application document adopts the same technical means in this prior art. This technical means will not be described one by one here. This application makes further improvements to this existing main body. For details, please refer to the disclosed technology below; in order to solve the technical problems existing in this prior art, as disclosed in the background technology above, "when the above-mentioned design is in use, although the design of the electric rotating shaft and fan blades in the detection channel can suck the gas in the room into the detection channel, the gas passes through the detection board for detection and then flows out of the detection channel, but the air sample can only be collected from one fixed direction, which will reduce the speed and efficiency of the detection. The fixed direction air intake method may not fully represent the formaldehyde distribution in the indoor air, reducing the use effect of the device". In terms of use, this problem is obviously a real and difficult problem to solve. In view of this, in order to solve this technical problem, an air intake component 3 is added to this application document, and the electrical equipment involved in this product is all powered by an external power supply.

[0028] It should be noted that a height adjustment mechanism may be installed at the bottom of the base 1 . The specific height adjustment mechanism has been disclosed in CN212031394U . The effect of its use may refer to the publication number CN212031394U .

[0029] More specifically:

[0030] like Figures 1-4 As shown:

[0031] An air intake assembly 3 is mounted on the base 1. The air intake assembly 3 comprises an annular housing 301 disposed on the upper surface of the base 1 and a cover plate 302 disposed above the annular housing 301. An annular housing 304 is rotatably connected between the outer surfaces of the annular housing 301 and the cover plate 302 via two sets of sealed bearings.

[0032] An air intake fan 312 is fixedly mounted on the surface of the annular casing 304 through a through-hole. An annular gear plate 305 is fixedly mounted on the upper surface of the annular casing 304. A helical gear 306 is meshedly connected to the surface of the annular gear plate 305. A drive motor 307 is fixedly mounted on the inner side wall of the cover plate 302 via a mounting plate. The helical gear 306 is fixedly mounted to the output end of the drive motor 307 by screws.

[0033] A partition 1 308 is fixed to the lower surface of the cover plate 302. An annular filter 309 for filtering air is fixedly mounted on the lower surface of the partition 1 308. A casing cover 311 is fixed to the lower surface of the annular filter 309. A partition 2 310 is fixedly mounted on the outer surface of the annular filter 309 near the casing cover 311. The partition 2 310 is fixed to the upper surface of the annular housing 301.

[0034] A battery for powering the drive motor 307 is fixedly mounted on the upper surface of the partition 1 308;

[0035] The two sets of sealed bearings are respectively arranged on the cover plate 302 and the annular housing 301 , and the lower surface of the housing cover 311 is flush with the lower surface of the annular housing 301 .

[0036] In this embodiment, when the formaldehyde content detection structure is used, the structure is first placed in a designated area of ​​the room, and then a battery (not shown) is used to power the drive motor 307. The drive motor 307 is started and drives the bevel gear 306 to rotate. Since the bevel gear 306 is meshed with the annular gear plate 305, the annular gear plate 305 is driven to rotate. The annular gear plate 305 drives the annular housing 304 to rotate between the cover plate 302 and the annular housing 301.

[0037] At the same time, the air intake fan 312 is started to suck the air in the room into the space between the annular casing 304 and the annular filter 309. Then the air enters and passes through the annular filter 309 to filter the impurities in the air. The filtered gas passes through the annular filter 309 and enters the casing cover 311. Then, the formaldehyde in the air is detected by the formaldehyde detection board body 2. The air intake fan 312 is driven by the annular casing 304 to rotate in a circular direction. Through this operation, the equipment can collect air samples from all directions at the same time, which greatly improves the speed and efficiency of the detection, and can collect more comprehensive and representative data, thereby improving the accuracy of formaldehyde concentration measurement and improving the use effect of the device.

[0038] It should be noted that: since partition 1 308 is connected to the cover plate 302 by bolts, and partition 2 310 is fixedly connected to the annular filter 309 by bolts, this connection method is detachable, thereby facilitating regular cleaning and maintenance of the dust filtered on the surface of the annular filter 309.

[0039] Going further;

[0040] In an optional embodiment, the outer surface of the annular shell 301 is fixed with symmetrically arranged elastic lock buckles 313 by bolts, and a locking ear 314 is fixed with bolts on one side of the upper surface of the base 1 close to the elastic lock buckle 313. The elastic lock buckle 313 is buckled on the locking ear 314 for connecting and locking the annular shell 301 and the base 1.

[0041] In this embodiment: the elastic lock 313 is released from the lock ear 314, thereby releasing the lock of the base 1 and the annular shell 301, thereby facilitating the replacement of the formaldehyde detection board body 2 and better observing the formaldehyde detection board body 2's detection of formaldehyde in the air.

[0042] Going further;

[0043] In an optional embodiment, symmetrically arranged positioning pins 315 are fixedly mounted on the lower surface of the annular shell 301 , and positioning holes 316 adapted to the positioning pins 315 are formed on the upper surface of the base 1 .

[0044] In this embodiment: when the annular shell 301 is installed on the base 1, the positioning pin 315 on the annular shell 301 is inserted into the positioning hole 316 opened in the base 1. Through the setting of the positioning pin 315 and the positioning hole 316, the base 1 and the annular shell 301 can be installed and positioned, so that the elastic lock buckle 313 and the lock ear 314 can quickly correspond to each other, thereby improving the installation efficiency. At the same time, it can effectively avoid the misalignment between the annular shell 301 and the base 1, and this structure has better stability.

[0045] Going further;

[0046] In an optional embodiment, a handle 303 is fixedly mounted on the upper surface of the cover plate 302 .

[0047] In this embodiment, the handle 303 is provided to facilitate carrying of the device, thereby improving the convenience of the device.

[0048] The working principle and use process of the present invention are as follows: when using the formaldehyde content detection structure, the structure is first placed in a designated area of ​​the room, and then a battery (not shown) is used to power the drive motor 307. By starting the drive motor 307, the bevel gear 306 is driven to rotate. Since the bevel gear 306 and the annular gear plate 305 are meshed and connected, the annular gear plate 305 is driven to rotate. The annular gear plate 305 drives the annular casing 304 to rotate between the cover plate 302 and the annular shell 301, and at the same time, the air intake fan 312 is started, and the air in the room is sucked into the space between the annular casing 304 and the annular filter 309. Then the air enters and is filtered through the annular filter 309 to remove impurities in the air. The filtered gas passes through the annular filter 309 and enters the casing cover 311. Then, the formaldehyde in the air is detected by the formaldehyde detection board body 2, and the air intake fan 312 is driven by the annular casing 304 to rotate in a circular direction. Through this operation, the device can detect formaldehyde from the entire room. The air samples are collected in the direction of the azimuth at the same time, which greatly improves the speed and efficiency of the detection, and can collect more comprehensive and representative data, thereby improving the accuracy of formaldehyde concentration measurement and improving the use effect of the device. The elastic lock buckle 313 is released from the lock ear 314, thereby releasing the lock of the base 1 and the annular shell 301, making it convenient to replace the formaldehyde detection board body 2, and at the same time better observe the formaldehyde detection situation of the formaldehyde detection board body 2 on the air. The setting of the handle 303 makes it convenient to carry the device, which improves the convenience of the device. When the annular shell 301 is installed on the base 1, the positioning pin 315 on the annular shell 301 is inserted into the positioning hole 316 opened in the base 1. Through the setting of the positioning pin 315 and the positioning hole 316, the base 1 and the annular shell 301 can be installed and positioned, so that the elastic lock buckle 313 and the lock ear 314 quickly correspond to each other, thereby improving the installation efficiency, and at the same time, it can effectively avoid the misalignment between the annular shell 301 and the base 1, and the stability of this structure is better.

[0049] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A formaldehyde content detection structure, comprising a base (1) and a formaldehyde detection board body (2) arranged on the upper surface of the base (1), wherein the formaldehyde detection board body (2) is used to detect formaldehyde in the air, and is characterized in that: An air intake assembly (3) is installed on the base (1); The air intake assembly (3) comprises an annular shell (301) arranged on the upper surface of the base (1) and a cover plate (302) arranged above the annular shell (301); an annular sleeve (304) is rotatably connected between the outer surfaces of the annular shell (301) and the cover plate (302) via two sets of sealed bearings; An air intake fan (312) is fixedly mounted on the surface of the annular casing (304) through a through-hole provided therein; an annular gear plate (305) is fixedly mounted on the upper surface of the annular casing (304); a helical gear (306) is meshedly connected to the surface of the annular gear plate (305); a driving motor (307) is fixedly mounted on the inner side wall of the cover plate (302) through a mounting plate; and the helical gear (306) is fixedly mounted on the output end of the driving motor (307) by screws; A partition plate 1 (308) is fixed to the lower surface of the cover plate (302), an annular filter screen (309) for filtering air is fixedly installed on the lower surface of the partition plate 1 (308), a casing cover (311) is fixed to the lower surface of the annular filter screen (309), a partition plate 2 (310) is fixedly installed on the outer surface of the annular filter screen (309) close to the casing cover (311), and the partition plate 2 (310) is fixed to the upper surface of the annular housing (301); A battery for supplying power to the drive motor (307) is fixedly mounted on the upper surface of the partition plate (308).

2. A formaldehyde content detection structure according to claim 1, characterized in that: The two sets of sealed bearings are respectively arranged on the cover plate (302) and the annular housing (301), and the lower surface of the housing cover (311) is flush with the lower surface of the annular housing (301).

3. A formaldehyde content detection structure according to claim 1, characterized in that: The outer surface of the annular shell (301) is fixed with symmetrically arranged elastic lock buckles (313) by means of bolts, and a locking ear (314) is fixed with bolts on one side of the upper surface of the base (1) close to the elastic lock buckles (313).

4. A formaldehyde content detection structure according to claim 3, characterized in that: The elastic lock buckle (313) is buckled on the lock ear (314) and is used to connect and lock the annular housing (301) and the base (1).

5. A formaldehyde content detection structure according to claim 4, characterized in that: The lower surface of the annular shell (301) is fixedly mounted with symmetrically arranged positioning pins (315), and the upper surface of the base (1) is provided with positioning sockets (316) adapted to the positioning pins (315).

6. A formaldehyde content detection structure according to claim 1, characterized in that: A handle (303) is fixedly mounted on the upper surface of the cover plate (302).

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