Formaldehyde concentration detection device in closed environment

Abstract

The utility model relates to the technical field of formaldehyde detection devices, in particular to a closed environment formaldehyde concentration detection device which comprises a detection frame seat, an air inlet detection seat and a packaging cover, the packaging cover is arranged between the detection frame seat and the air inlet detection seat in a clamping mode, and a plurality of circulation windows are formed in the upper portion of the packaging cover at equal intervals. When the formaldehyde detection device is used, the air inlet fan is started, external indoor air enters the device through the air inlet of the barrier, internal temperature rise is performed by heating the electric heating wire, air flow is increased, active air circulation is guaranteed, formaldehyde gas deposition is reduced, detected air overflows through the circulation window, and then a long-time air circulation detection task is performed. The detection accuracy of the formaldehyde concentration in the gas is ensured.

Description

Technical Field

[0001] This utility model relates to the technical field of formaldehyde detection devices, and in particular to a formaldehyde concentration detection device for a closed environment. Background Technology

[0002] The main hazard of formaldehyde is its irritant effect on the skin and mucous membranes. When formaldehyde reaches a certain concentration indoors, people experience discomfort. Formaldehyde concentrations greater than 0.08 mg / m³ can cause red and itchy eyes, throat discomfort or pain, hoarseness, sneezing, chest tightness, wheezing, and dermatitis. Newly renovated rooms often have high formaldehyde levels, a major contributing factor to many diseases. Formaldehyde concentration testing uses formaldehyde detection devices. Because formaldehyde is denser than air, it tends to settle in sealed environments, leading to errors in traditional detection methods. Utility Model Content

[0003] Those skilled in the art have provided a formaldehyde concentration detection device for a closed environment to solve the problems mentioned in the background art.

[0004] To solve the above technical problems, this utility model provides a formaldehyde concentration detection device in a closed environment, including a detection frame, an air inlet detection seat and a sealing cover. The sealing cover is engaged between the detection frame and the air inlet detection seat, and a plurality of flow windows are equidistantly opened on the upper part of the sealing cover.

[0005] The testing frame includes a testing device, a side plate, a sealing slot, a testing end, a positioning bolt hole, a guide plate, a sealing strip, and a sealing bayonet. The side plate is fixedly installed on the right side of the upper end face of the testing device, and the testing end is fixedly installed in the middle of the upper end face of the testing device. The top of the testing device is provided with a guide plate at intervals. The guide plate is fixedly connected to the side plate, and the upper end of the guide plate is bonded with a sealing strip.

[0006] The air intake detection seat includes an air intake seat body, an air guide ring, a grid air intake port, an air intake fan seat, an air intake fan, a second guide plate, a second sealing strip, an air guide block, heating wires, a second sealing bayonet, a second sealing slot, a limiting bolt hole, and a second side plate. The air intake seat body has a grid air intake port at the upper center. The air guide ring guides the gas in the closed chamber through a funnel-shaped port. Air intake fan seats are installed at intervals directly below the grid air intake port, and an air intake fan is fixedly installed on the upper end of each fan seat. The rotation of the air intake fan guides the airflow to the detection end for formaldehyde concentration detection. A second guide plate is fixedly installed on the left side of the lower end face of the air intake seat body. The right end of the second guide plate is fixedly connected to the second side plate. A second sealing strip is adhered to the bottom of the second guide plate. The air guide block is fixedly connected to the second guide plate and the second side plate using several connecting rods. Several sets of heating wires are fixedly installed at the bottom of the air guide block. The heating wires increase the internal temperature of the device, thereby accelerating gas flow, reducing gas deposition, and ensuring accurate gas concentration detection.

[0007] In a preferred embodiment: the detection frame base and the air intake detection base are bolted together and fixed by positioning bolts. A plurality of positioning bolt holes are equally spaced on the upper end face of the first side plate, and the positioning bolt holes are threadedly connected to the positioning bolts. The second side plate is fixedly installed on the right side of the lower end face of the air intake base body. The second side plate is in the shape of a right angle bend. A plurality of limiting bolt holes are opened at the lower end of the second side plate. The limiting bolt holes correspond to the positioning bolt holes, and the limiting bolt holes are used for the installation of positioning bolts.

[0008] In a preferred embodiment: a sealing slot is provided along the left edge of the upper end face of the detection device, and two sealing slots are provided on the left end face of the side plate. Both the sealing slots and the sealing slots are inserted into the encapsulation cover.

[0009] In a preferred embodiment: a triangular air guide ring is fixedly installed on the upper end of the air intake seat body.

[0010] In a preferred embodiment: an air guide block is provided in the middle between the second guide plate and the second side plate, and the upper end surface of the air guide block is elliptical.

[0011] In a preferred embodiment: a sealing slot 2 is provided along the left edge of the lower end face of the air intake seat body, and two sealing slots 2 are provided on the left end face of the side plate 2. The sealing slots 2 are connected to the sealing slots 2, and both the sealing slots 2 and the sealing slots 2 are engaged with the encapsulation cover.

[0012] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0013] 1. When using this utility model, by starting the air intake fan, the outside indoor air will enter the device through the air intake of the grille. The internal temperature is increased by heating the heating wire, which increases the air flow, ensures active air circulation, reduces the deposition of formaldehyde gas, and allows the detection gas to overflow through the flow window, thereby performing a long-term gas circulation detection task to ensure the accuracy of formaldehyde concentration detection in the gas.

[0014] 2. When using this utility model, a gas guide block is used to block the gas and guide the gas to the four sides to prevent direct contact with the detection end, which would affect the formaldehyde concentration detection result. Attached Figure Description

[0015] Figure 1 This is a structural diagram provided in this application;

[0016] Figure 2 This is a schematic diagram of the positioning bolt provided in this application;

[0017] Figure 3 This is a schematic diagram of the structure of the encapsulation cover provided in this application;

[0018] Figure 4This is a schematic diagram of the structure of the testing frame provided in this application;

[0019] Figure 5 This is a schematic diagram of the structure of the air intake detection seat provided in this application;

[0020] In the diagram: 1. Detection frame; 2. Inlet detection seat; 3. Sealing cover; 4. Flow window; 5. Positioning bolt;

[0021] 11. Detection device; 12. Side plate; 13. Sealing slot; 14. Detection end; 15. Positioning bolt hole; 16. Guide plate; 17. Sealing strip; 18. Sealing bayonet;

[0022] 21. Air intake seat body; 22. Air guide end ring; 23. Grille air intake; 24. Air intake fan seat; 25. Air intake fan; 26. Guide plate II; 27. Sealing strip II; 28. Air guide block; 29. ​​Heating wire; 210. Sealing bayonet II; 211. Sealing slot II; 212. Limiting bolt hole; 213. Side plate II. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0026] Please see Figures 1-5In this embodiment, a formaldehyde concentration detection device for a closed environment is provided, including a detection frame 1, an air inlet detection seat 2 and a sealing cover 3. The detection frame 1 and the air inlet detection seat 2 are bolted together and fixed by a positioning bolt 5, and the sealing cover 3 is engaged between the detection frame 1 and the air inlet detection seat 2. Several flow windows 4 are equidistantly opened on the upper part of the sealing cover 3.

[0027] The testing frame 1 includes a testing device 11, a side plate 12, a sealing slot 13, a testing end 14, positioning bolt holes 15, a guide plate 16, a sealing strip 17, and a sealing bayonet 18. The side plate 12 is fixedly installed on the right side of the upper end face of the testing device 11. Several positioning bolt holes 15 are equally spaced on the upper end face of the side plate 12. The positioning bolt holes 15 are threadedly connected to the positioning bolts 5. The sealing slot 13 is opened along the edge of the left side of the upper end face of the testing device 11. The testing end 14 is fixedly installed in the middle of the upper end face of the testing device 11. The top of the testing device 11 is provided with guide plates 16 at intervals. The guide plates 16 are fixedly connected to the side plate 12. The sealing strip 17 is glued to the upper end of the guide plate 16. Two sealing bayonet 18s are opened on the left end face of the side plate 12. The sealing bayonet 18 and the sealing slot 13 are inserted into the encapsulation cover 3.

[0028] The air intake detection seat 2 includes an air intake seat body 21, an air guide end ring 22, a grille air intake port 23, an air intake fan seat 24, an air intake fan 25, a second guide plate 26, a second sealing strip 27, an air guide block 28, a heating wire 29, a second sealing slot 210, a second sealing groove 211, a limiting bolt hole 212, and a second side plate 213. A triangular air guide end ring 22 is fixedly installed on the upper end of the air intake seat body 21. A grille air intake port 23 is opened in the middle of the upper end of the air intake seat body 21. The air guide end ring 22 passes through... The funnel-shaped port guides the gas in the enclosed chamber. Air intake fan seats 24 are installed at intervals directly below the air intake port 23. An air intake fan 25 is fixedly installed on the upper end of the air intake fan seat 24. The rotation of the air intake fan 25 guides the airflow to the detection end 14 for formaldehyde concentration detection. A second side plate 213 is fixedly installed on the lower right side of the air intake seat body 21. The second side plate 213 is shaped like a right-angle bend. Several limiting bolt holes 212 are opened at the lower end of the second side plate 213. The limiting bolt holes 212 are connected to the fixed end 14. The positioning bolt hole 15 corresponds to the positioning bolt hole 212, which is used for the placement of the positioning bolt 5. A guide plate 26 is fixedly installed on the left side of the lower end face of the air intake seat body 21. The right end of the guide plate 26 is fixedly connected to the side plate 213. A sealing strip 27 is adhered to the bottom of the guide plate 26. An air guide block 28 is provided in the middle between the guide plate 26 and the side plate 213. The upper end face of the air guide block 28 is elliptical. The air guide block 28 is fixedly connected to the guide plate 26 and the side plate 213 respectively by several connecting rods. Several sets of heating wires 29 are fixedly installed at the bottom of 8. The heating wires 29 increase the temperature inside the device, thereby accelerating gas flow, reducing gas deposition, and ensuring accurate gas concentration detection. A sealing slot 211 is opened along the left edge of the lower end face of the air inlet body 21. Two sealing slots 210 are opened on the left end face of the side plate 213. The sealing slots 210 are connected to the sealing slots 211, and both the sealing slots 210 and the sealing slots 211 are engaged with the encapsulation cover 3.

[0029] The working principle of this utility model is as follows:

[0030] In use, the detection device 11 and the air inlet body 21 are bolted together with positioning bolts 5 through positioning bolt holes 15 on side plate 12 and limiting bolt holes 212 on side plate 213. Sealing slot 13, sealing bayonet 18, sealing bayonet 210 and sealing slot 211 are connected to ensure that the encapsulation cover 3 is completely sealed and inserted. The guide plate 26 is connected with the sealing strip 17 on the guide plate 16 through sealing strip 27 to form a guide ring plate. When the air intake fan 25 is turned on, the outside indoor air will enter the device through the grille air inlet 23, come into contact with the air guide block 28 and flow to the four sides to prevent direct contact with the detection end 14, which would affect the formaldehyde concentration detection result. The internal temperature is increased by heating the heating wire 29 to increase the gas flow, ensure active gas circulation, reduce formaldehyde gas deposition, and allow the detection gas to overflow through the flow window 4, thus performing a long-term gas circulation detection task to ensure the accuracy of formaldehyde concentration detection in the gas.

[0031] The above description is only a preferred embodiment of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantial modifications made to the present utility model by those skilled in the art within the scope of the technology disclosed in the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.

Claims

1. A formaldehyde concentration detection device for a sealed environment, comprising a detection frame (1), an air inlet detection seat (2), and a sealing cover (3), characterized in that, A sealing cover (3) is engaged between the detection frame (1) and the air intake detection seat (2), and a number of flow windows (4) are equidistantly opened on the upper part of the sealing cover (3); The detection frame (1) includes a detection device (11), a side plate (12), a sealing slot (13), a detection end (14), a positioning bolt hole (15), a guide plate (16), a sealing strip (17), and a sealing bayonet (18). The side plate (12) is fixedly installed on the right side of the upper end face of the detection device (11), and the detection end (14) is fixedly installed in the middle of the upper end face of the detection device (11). The top of the detection device (11) is provided with a guide plate (16) at intervals. The guide plate (16) is fixedly connected to the side plate (12), and the sealing strip (17) is glued to the upper end of the guide plate (16). The air intake detection seat (2) includes an air intake seat body (21), an air guide end ring (22), a grille air intake (23), an air intake fan seat (24), an air intake fan (25), a second guide plate (26), a second sealing strip (27), an air guide block (28), a heating wire (29), a second sealing slot (210), a second sealing slot (211), a limiting bolt hole (212), and a second side plate (213). A triangular air guide end ring (22) is fixedly installed on the upper end of the air intake seat body (21). A grille air intake (23) is opened in the middle of the upper end of the air intake seat body (21). Air intake fan seats (24) are installed at intervals directly below the grille air intake (23). The upper end of the air intake fan seat (24) An intake fan (25) is fixedly installed. A side plate (213) is fixedly installed on the right side of the lower end face of the intake seat body (21). A guide plate (26) is fixedly installed on the left side of the lower end face of the intake seat body (21). The right end of the guide plate (26) is fixedly connected to the side plate (213). A sealing strip (27) is glued to the bottom of the guide plate (26). An air guide block (28) is provided in the middle between the guide plate (26) and the side plate (213). The upper end face of the air guide block (28) is elliptical. The air guide block (28) is fixedly connected to the guide plate (26) and the side plate (213) by several connecting rods. Several sets of heating wires (29) are fixedly installed at the bottom of the air guide block (28).

2. The formaldehyde concentration detection device in a closed environment according to claim 1, characterized in that, The detection frame (1) and the air intake detection seat (2) are bolted together by positioning bolts (5). The upper end face of the side plate (12) is provided with several positioning bolt holes (15) at equal intervals. The positioning bolt holes (15) are threadedly connected to the positioning bolts (5). The lower end face of the air intake seat body (21) is fixedly installed with side plate (213). Side plate (213) is in the shape of a right angle bend. The lower end of side plate (213) is provided with several limiting bolt holes (212). The limiting bolt holes (212) are corresponding to the positioning bolt holes (15).

3. The formaldehyde concentration detection device in a closed environment according to claim 1, characterized in that, The detection device (11) has a sealing slot (13) on the left side of its upper end face, and two sealing slots (18) are provided on the left end face of the side plate (12). Both the sealing slots (18) and the sealing slots (13) are inserted into the encapsulation cover (3).

4. The formaldehyde concentration detection device in a closed environment according to claim 1, characterized in that, A triangular air guide ring (22) is fixedly installed on the upper end of the air intake seat body (21).

5. The formaldehyde concentration detection device in a closed environment according to claim 1, characterized in that, An air guide block (28) is provided in the middle between the second guide plate (26) and the second side plate (213), and the upper end face of the air guide block (28) is elliptical.

6. The formaldehyde concentration detection device in a closed environment according to claim 5, characterized in that, A sealing slot 2 (211) is provided on the left side edge of the lower end face of the air intake seat body (21), and two sealing slots 2 (210) are provided on the left end face of the side plate 2 (213). The sealing slots 2 (210) are connected to the sealing slots 2 (211), and both the sealing slots 2 (210) and the sealing slots 2 (211) are engaged with the encapsulation cover (3).

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