Filtering mechanism for formaldehyde detector

Abstract

The utility model relates to the technical field of formaldehyde detection, and discloses a filtering mechanism for a formaldehyde detector, which comprises a formaldehyde detector body, a display screen is arranged on the front side of the formaldehyde detector body, a control button is arranged on the front side of the formaldehyde detector body, and a detection head is fixedly arranged on the top of the formaldehyde detector body. A positioning hole is formed in the top of the formaldehyde detector body. According to the filtering mechanism for the formaldehyde detector, through cooperation of a through groove and a groove, when the filtering mechanism needs to be used, a filtering piece can be rotated, the through groove and the groove are overlapped, a detection head can be exposed to the outer side of air, detection of formaldehyde in the air can be achieved, and through design of a first filtering hole, the filtering piece can be rotated during detection, so that the detection efficiency is improved; the first filter hole is aligned with the groove, then normal work can be achieved, dust in air can be filtered, the detection head is prevented from being blocked easily, two filtering modes can be achieved, and when the filter cylinder is blocked, normal detection of the detector cannot be affected.

Description

Technical Field

[0001] The utility model relates to the technical field of formaldehyde detection, in particular to a filtering mechanism for a formaldehyde detector. Background Art

[0002] Formaldehyde has a strong irritating effect on the mucous membranes of the eyes, nose and throat. The most common symptoms are eye irritation and headache. Severe cases can cause allergic dermatitis and asthma. In addition, formaldehyde can react with ionic chlorides in the air to form dichloromethyl ether, which is a carcinogen. Formaldehyde can be adsorbed and enriched by high specific surface area materials and released again when the temperature rises, aggravating the pollution effect. With the improvement of people's attention to their own health, people often use formaldehyde detectors to detect the content of indoor formaldehyde. When the formaldehyde content is high, ventilation can be carried out in time to discharge formaldehyde, avoiding inhaling a large amount of indoor formaldehyde and damaging physical health.

[0003] Chinese Utility Model Patent Publication No.: CN 215462754 U3, discloses: a filtering mechanism for an indoor formaldehyde detector. This filtering mechanism for an indoor formaldehyde detector can prevent larger sundries from entering the device through the installation of an anti-impurity net, playing a role in the first-stage filtering and protection. The installation of a rubber anti-slip layer can prevent the filter cylinder from loosening, making it easier for the fixed card shaft to be inserted into the inside of the limit plate. However, although this filtering mechanism for an indoor formaldehyde detector is designed with a filtering component, it is not convenient to rotate the filter cylinder, which easily affects the normal detection of the detector when the filter cylinder is blocked, and its practicability is poor. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a filtering mechanism for a formaldehyde detector, which can effectively solve the problems in the prior art that although a filtering component is designed, it is not convenient to rotate the filter cylinder, which easily affects the normal detection of the detector when the filter cylinder is blocked, and its practicability is poor.

[0005] The technical solution adopted by the utility model is: a filtering mechanism for a formaldehyde detector, including a formaldehyde detector body. A display screen is arranged on the front side of the formaldehyde detector body, and control buttons are arranged on the front side of the formaldehyde detector body. A detection head is fixedly installed on the top of the formaldehyde detector body. A positioning hole is opened on the top of the formaldehyde detector body, and a card slot is opened on the top of the formaldehyde detector body. A first filtering component is inserted and installed on the top of the formaldehyde detector body, and a second filtering component is inserted and installed on the top of the first filtering component.

[0006] Preferably, the first filtering component includes a fixed seat, a positioning sleeve is fixedly installed at the bottom of the fixed seat, a positioning post is fixedly installed at the bottom of the fixed seat, a fixing bolt is threadedly connected to the top of the fixed seat, a limiting sleeve is fixedly installed at the top of the fixed seat, the positioning sleeve is inserted and installed in the card slot, there are eight identical positioning holes, four of the positioning holes are threadedly connected to the fixing bolt, and four of the positioning holes are inserted and installed with the positioning post.

[0007] Through the above technical solution, through the cooperation of the positioning hole and the positioning post, when installing the fixed seat, it can play a role in alignment. After the alignment is completed, the fixing bolt can be inserted into the other four positioning holes, and the rapid installation of the fixed seat can be realized, which is convenient for later maintenance and replacement.

[0008] Preferably, a plurality of through grooves are opened on the outer side of the limiting sleeve, a rotating groove is opened inside the limiting sleeve, a filtering member is rotatably installed on the inner side of the rotating groove, a groove is opened on the outer side of the filtering member, a plurality of first filtering holes are opened on the outer side of the filtering member, an installation groove and a limiting groove are opened at the top of the limiting sleeve, the areas of the through groove and the groove are the same, and the rotating groove and the filtering member are adapted to each other.

[0009] Through the above technical solution, through the cooperation of the through groove and the groove, when in use, the filtering member can be rotated so that the through groove and the groove overlap, and the detection head can be exposed outside the air, and the detection of formaldehyde in the air can be realized.

[0010] Preferably, there are multiple groups of the same first filtering holes, and multiple groups of the first filtering holes are equidistantly distributed.

[0011] Through the above technical solution, through the design of the first filtering holes, when detecting, the filtering member can also be rotated so that the first filtering holes are aligned with the groove, and then normal operation can be realized, and the filtering of dust in the air can also be realized, avoiding the detection head from being easily blocked.

[0012] Preferably, the second filtering component includes a filter plate, a clamping block is fixedly installed on the outer side of the filter plate, a second filtering hole and a third filtering hole are opened on the outer side of the filter plate, a handle is fixedly installed on the top of the filter plate, and the clamping block is adapted to the installation groove and the limiting groove.

[0013] Through the above technical solution, through the cooperation of the clamping block, the installation groove and the limiting groove, the clamping block can be rotated so that the clamping block rotates in the installation groove and then is clamped into the limiting groove, and the rapid installation of the filter plate can be realized, which is convenient for quickly replacing the filter plate later.

[0014] Preferably, the filter plate is located inside the limiting sleeve, and the filter plate is adapted to the handle.

[0015] Through the above technical solution, since the filter plate is located at the top of the limit sleeve, it can prevent dust at the top from easily entering the interior and causing blockage, and the filter plate can be quickly taken out through the handle.

[0016] Preferably, the same number of second filter holes and third filter holes are provided, and the plurality of second filter holes and third filter holes are annularly distributed about the center line of the filter plate.

[0017] Through the above technical solution, the second filter holes and the third filter holes can filter the air at the top, and the plurality of second filter holes and third filter holes can achieve an overall filtering effect.

[0018] Compared with the prior art, the present utility model provides a filtering mechanism for a formaldehyde detector, which has the following beneficial effects:

[0019] 1. For the filtering mechanism of the formaldehyde detector, through the cooperation of the through groove and the groove, when in use, the filter element can be rotated so that the through groove and the groove overlap, enabling the detection head to be exposed outside the air, and the detection of formaldehyde in the air can be realized. Through the design of the first filter hole, when detecting, the filter element can also be rotated so that the first filter hole is aligned with the groove, and then normal operation can be achieved, and the filtering of dust in the air can also be realized, preventing the detection head from being easily blocked. Two filtering methods can be achieved, and when the filter cylinder is blocked, it will not affect the normal detection of the detector.

[0020] 2. For the filtering mechanism of the formaldehyde detector, through the cooperation of the clamping block, the installation groove and the limiting groove, the clamping block can be rotated so that the clamping block rotates in the installation groove and then is clamped into the limiting groove, realizing the quick installation of the filter plate, facilitating the quick replacement of the filter plate in the later stage. Through the second filter holes and the third filter holes, the air at the top can be filtered, and the plurality of second filter holes and third filter holes can achieve an overall filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional structural diagram of the present utility model;

[0022] Figure 2 is a split structural diagram of the present utility model;

[0023] Figure 3 is a split structural schematic diagram of the first filtering component of the present utility model Figure 1 ;

[0024] Figure 4 is a split structural schematic diagram of the first filtering component of the present utility model Figure 2 ;

[0025] Figure 5 is a three-dimensional structural diagram of the second filtering component of the present utility model.

[0026] Among them: 1. Formaldehyde detector body; 2. Display screen; 3. Control button; 4. Detection head; 5. Positioning hole; 6. Card slot; 7. First filter assembly; 701. Fixed seat; 702. Positioning sleeve; 703. Positioning column; 704. Fixed bolt; 705. Limiting sleeve; 706. Through groove; 707. Rotating groove; 708. Filter element; 709. Groove; 710. First filter hole; 711. Installation groove; 712. Limiting groove; 8. Second filter assembly; 801. Filter plate; 802. Clamping block; 803. Second filter hole; 804. Third filter hole; 805. Handle. Specific implementation mode

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Embodiment 1: As Figures 1-5 shown, a filtering mechanism for a formaldehyde detector provided by the present invention includes a formaldehyde detector body 1. A display screen 2 is arranged on the front side of the formaldehyde detector body 1. A control button 3 is arranged on the front side of the formaldehyde detector body 1. A detection head 4 is fixedly installed on the top of the formaldehyde detector body 1. A positioning hole 5 is opened on the top of the formaldehyde detector body 1. A card slot 6 is opened on the top of the formaldehyde detector body 1. A first filter assembly 7 is inserted and installed on the top of the formaldehyde detector body 1. A second filter assembly 8 is inserted and installed on the top of the first filter assembly 7.

[0029] Specifically, the first filter assembly 7 includes a fixed seat 701. A positioning sleeve 702 is fixedly installed at the bottom of the fixed seat 701. A positioning column 703 is fixedly installed at the bottom of the fixed seat 701. A fixed bolt 704 is threadedly connected to the top of the fixed seat 701. A limiting sleeve 705 is fixedly installed at the top of the fixed seat 701. The positioning sleeve 702 is inserted and installed with the card slot 6. There are eight identical positioning holes 5. Four positioning holes 5 are threadedly connected with the fixed bolt 704. Four positioning holes 5 are inserted and installed with the positioning column 703. The advantage is that through the cooperation of the positioning hole 5 and the positioning column 703, when installing the fixed seat 701, it can play a role in alignment. When the alignment is completed, the fixed bolt 704 can be inserted into the other four positioning holes 5, and the rapid installation of the fixed seat 701 can be realized, which is convenient for later maintenance and replacement.

[0030] Specifically, a plurality of through grooves 706 are formed on the outer side of the limit sleeve 705, a rotation groove 707 is formed inside the limit sleeve 705, a filter element 708 is rotatably installed inside the rotation groove 707, a groove 709 is formed on the outer side of the filter element 708, a plurality of first filter holes 710 are formed on the outer side of the filter element 708, an installation groove 711 and a limit groove 712 are formed at the top of the limit sleeve 705. The through grooves 706 and the groove 709 are of the same area size, and the rotation groove 707 and the filter element 708 are adapted to each other. The advantage is that through the cooperation of the through grooves 706 and the groove 709, when in use, the filter element 708 can be rotated so that the through grooves 706 and the groove 709 overlap, and the detection head 4 can be exposed outside the air, and the detection of formaldehyde in the air can be realized.

[0031] Specifically, there are multiple groups of the same first filter holes 710, and the multiple groups of first filter holes 710 are equidistantly distributed. The advantage is that through the design of the first filter holes 710, when detecting, the filter element 708 can also be rotated so that the first filter holes 710 are aligned with the groove 709, and then normal operation can be realized, and the filtration of dust in the air can also be realized, avoiding the detection head 4 from being easily blocked.

[0032] Embodiment 2: As Figures 2-5 shown, as an improvement over the previous embodiment.

[0033] Specifically, the second filter assembly 8 includes a filter plate 801, a clamping block 802 is fixedly installed on the outer side of the filter plate 801, second filter holes 803 and third filter holes 804 are formed on the outer side of the filter plate 801, a handle 805 is fixedly installed on the top of the filter plate 801, and the clamping block 802 is adapted to the installation groove 711 and the limit groove 712. The advantage is that through the cooperation of the clamping block 802 and the installation groove 711 and the limit groove 712, the clamping block 802 can be rotated so that the clamping block 802 rotates in the installation groove 711 and then is clamped into the limit groove 712, and the rapid installation of the filter plate 801 can be realized, which is convenient for the rapid replacement of the filter plate 801 in the later stage.

[0034] Specifically, the filter plate 801 is located inside the limit sleeve 705, and the filter plate 801 is adapted to the handle 805. The advantage is that since the filter plate 801 is located at the top of the limit sleeve 705, it can prevent the dust on the top from easily entering the interior and causing blockage, and the filter plate 801 can be quickly taken out through the handle 805.

[0035] Specifically, there are the same number of second filter holes 803 and third filter holes 804, and the multiple second filter holes 803 and third filter holes 804 are annularly distributed about the center line of the filter plate 801. The advantage is that through the second filter holes 803 and the third filter holes 804, the air at the top can be filtered, and the multiple second filter holes 803 and third filter holes 804 can achieve an overall filtering effect.

[0036] Working principle: During use, through the cooperation of the positioning hole 5 and the positioning post 703, when installing the fixing base 701, it can play a role in alignment. After the alignment is completed, fixing bolts 704 can be inserted into the other four positioning holes 5 to achieve the rapid installation of the fixing base 701, which is convenient for later maintenance and replacement. Through the cooperation of the through groove 706 and the groove 709, when in use, the filter element 708 can be rotated so that the through groove 706 and the groove 709 overlap, enabling the detection head 4 to be exposed outside the air, and the detection of formaldehyde in the air can be achieved. Through the design of the first filter hole 710, during detection, the filter element 708 can also be rotated so that the first filter hole 710 is aligned with the groove 709, and then normal operation can be achieved, and the filtration of dust in the air can also be realized, avoiding the detection head 4 from being easily blocked. Through the cooperation of the clamping block 802, the installation groove 711 and the limiting groove 712, the clamping block 802 can be rotated so that the clamping block 802 rotates in the installation groove 711 and then snaps into the limiting groove 712, achieving the rapid installation of the filter plate 801 and facilitating the rapid replacement of the filter plate 801 later. Since the filter plate 801 is located on top of the limiting sleeve 705, it can prevent dust on the top from easily entering the interior and causing blockage, and the filter plate 801 can be quickly taken out through the handle 805. Through the second filter hole 803 and the third filter hole 804, the air on the top can be filtered, and the multiple second filter holes 803 and the third filter holes 804 can achieve an overall filtering effect.

[0037] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filter mechanism for a formaldehyde detector, comprising a formaldehyde detector body (1), characterized in that: The formaldehyde detector body (1) is provided with a display screen (2) on the front side, the formaldehyde detector body (1) is provided with a control button (3) on the front side, a detection head (4) is fixedly installed on the top of the formaldehyde detector body (1), a positioning hole (5) is provided on the top of the formaldehyde detector body (1), a card slot (6) is provided on the top of the formaldehyde detector body (1), a first filter component (7) is plugged and installed on the top of the formaldehyde detector body (1), and a second filter component (8) is plugged and installed on the top of the first filter component (7).

2. A filter mechanism for a formaldehyde detector according to claim 1, characterized in that: The first filter assembly (7) comprises a fixing seat (701), a positioning sleeve (702) is fixedly installed at the bottom of the fixing seat (701), a positioning column (703) is fixedly installed at the bottom of the fixing seat (701), a fixing bolt (704) is threadedly connected at the top of the fixing seat (701), a limiting sleeve (705) is fixedly installed at the top of the fixing seat (701), the positioning sleeve (702) and the card slot (6) are plug-in mounted, and the positioning holes (5) are provided with eight identical ones, four of the positioning holes (5) are threadedly connected to the fixing bolt (704), and four of the positioning holes (5) and the positioning columns (703) are plug-in mounted.

3. A filter mechanism for a formaldehyde detector according to claim 2, characterized in that: The outer side of the limiting sleeve (705) is provided with a plurality of through grooves (706), the inner side of the limiting sleeve (705) is provided with a rotation groove (707), a filter element (708) is rotatably mounted inside the rotation groove (707), the outer side of the filter element (708) is provided with a groove (709), the outer side of the filter element (708) is provided with a plurality of filter holes (710), the top of the limiting sleeve (705) is provided with a mounting groove (711) and a limiting groove (712), the through groove (706) and the groove (709) are of the same size, and the rotation groove (707) and the filter element (708) are matched.

4. A filter mechanism for a formaldehyde detector according to claim 3, characterized in that: The filter holes 1 (710) are arranged in a plurality of the same groups, and the plurality of groups of filter holes 1 (710) are distributed at equal intervals.

5. A filter mechanism for a formaldehyde detector according to claim 4, characterized in that: The second filter assembly (8) comprises a filter plate (801), a clamping block (802) is fixedly mounted on the outer side of the filter plate (801), a second filter hole (803) and a third filter hole (804) are provided on the outer side of the filter plate (801), a handle (805) is fixedly mounted on the top of the filter plate (801), and the clamping block (802) is compatible with the mounting groove (711) and the limiting groove (712).

6. A filter mechanism for a formaldehyde detector according to claim 5, characterized in that: The filter plate (801) is located on the inner side of the limiting sleeve (705), and the filter plate (801) is compatible with the handle (805).

7. A filter mechanism for a formaldehyde detector according to claim 6, characterized in that: The second filter hole (803) and the third filter hole (804) are provided in the same number, and the plurality of the second filter holes (803) and the third filter holes (804) are distributed in a ring shape about the center line of the filter plate (801).

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