Portable active formaldehyde sampling and detecting device

Abstract

The utility model discloses a convenient active formaldehyde sampling and detecting device, and belongs to the technical field of formaldehyde detection. The detection device comprises: a housing, which is provided with an air inlet and an air outlet; the tablet fixing mechanism is arranged on the shell; the sampling mechanism is detachably connected with the air inlet; the detection mechanism is arranged in the shell and comprises an air pipe which is arranged in the shell and connected with the air inlet, and the other end of the air pipe is located at the tablet fixing mechanism; the connecting pipe is arranged in the shell and is connected with the air pipe; the small fan is mounted in the shell, and the air inlet end of the small fan is connected with the connecting pipe; the air outlet pipe is arranged at the air outlet end of the small fan and is connected with the air outlet; the photoelectric sensor is arranged in the shell, and a detection port of the photoelectric sensor faces the tablet fixing mechanism. According to the portable active formaldehyde sampling and detecting device, the formaldehyde concentration is detected by adopting a spectrophotometric method, active sampling and detection are realized, the portable active formaldehyde sampling and detecting device can be integrated in the shell, space is saved, and the portable active formaldehyde sampling and detecting device is convenient to carry.

Description

Technical Field

[0001] The utility model relates to the technical field of formaldehyde detection, and particularly relates to a convenient and active formaldehyde sampling and detection device. Background Art

[0002] Formaldehyde is a colorless gas. When the concentration is low, it is not easy to be detected and is easily covered by other odors, such as air fresheners. When the concentration is high, it has a strong pungent and asphyxiating odor and has an irritating effect on human eyes, nose, etc. Formaldehyde is a toxic gas that seriously endangers human health at present and appears more in furniture and decoration materials that do not meet the standards. Long-term exposure to an environment with a high formaldehyde concentration, patients may experience dizziness, headache, tearing, nausea and vomiting, cough and chest tightness, leukemia, etc., and in severe cases, it may lead to death. Therefore, in life, attention should be paid to staying away from formaldehyde. Newly decorated houses should be ventilated frequently and the formaldehyde content should be monitored.

[0003] Therefore, formaldehyde detection is required in rooms after decoration. The existing formaldehyde detection equipment is large in volume and inconvenient to carry when detecting indoor formaldehyde. When customers inspect houses, the method of real-time formaldehyde detection cannot be used to improve customer satisfaction, reducing its practicability. Content of the Utility Model

[0004] To solve the above technical problems, the utility model provides a convenient and active formaldehyde sampling and detection device.

[0005] The technical solution of the utility model is: a convenient and active formaldehyde sampling and detection device, including: a housing, on which an air inlet and an air outlet are provided; a tablet fixing mechanism provided on the housing; a sampling mechanism detachably connected to the air inlet; and a detection mechanism provided inside the housing, the detection mechanism including: an air duct provided inside the housing and connected to the air inlet, the other end of the air duct being located at the tablet fixing mechanism; a connecting pipe provided inside the housing and connected to the air duct; a small fan installed inside the housing, the air inlet end of the small fan being connected to the connecting pipe; an air outlet pipe provided at the air outlet end of the small fan and connected to the air outlet; and a photoelectric sensor provided inside the housing and with the detection port facing the tablet fixing mechanism.

[0006] Further, one end of the air duct facing the tablet fixing mechanism is inclined, one end of the connecting pipe connected to the air duct is located in the inclined section of the air duct, the photoelectric sensor penetrates through the air duct towards the tablet fixing mechanism, and a battery compartment is also provided on the housing.

[0007] Further, the tablet fixing mechanism includes: a placement seat provided on the housing; a closing cover capable of covering the placement seat, the closing cover being rotatably connected to the housing and a torsion spring being provided at the rotation connection; and a detection tablet provided inside the placement seat.

[0008] Further, a sealing ring is provided on the placement seat, a sealing groove adapted to the sealing ring is provided on the closing cover, and a pressing block for pressing against the test tablet is provided on the closing cover.

[0009] Further, the sampling mechanism includes: a sampling tube connected to the air inlet; a hand-held tube provided at the other end of the sampling tube; and a collection module located on the hand-held tube.

[0010] Further, the collection module includes: a connection seat provided on the hand-held tube and communicating with its interior; a tray provided inside the connection seat; a plurality of upright columns fixed to the bottom of the tray for connecting the connection seat; and a sampling sheet provided inside the tray.

[0011] Further, the collection module further includes: a screw cap capable of being threadedly connected to the connection seat; an extension tube provided on the screw cap and communicating with its interior, the other end of the extension tube being connected to a filtering component, and the filtering component includes: an air inlet end and a filter net located inside the air inlet end.

[0012] Further, a display screen and buttons for data display are further provided on the housing.

[0013] Further, connection bands are provided on both sides of the housing, and a buckle and a plug that cooperate with each other are respectively provided at the other ends of the two groups of connection bands.

[0014] The beneficial technical effects of the present utility model are as follows: When the small fan is working, it can generate negative pressure, so that air can enter the inside of the air duct through the air inlet, then enter the fan through the connecting pipe, and finally be transported to the air outlet through the exhaust duct, realizing the circulation of air. Since the other end of the air duct faces the tablet fixing mechanism, the air flowing in the air duct will contact the test tablet fixed at the tablet fixing mechanism, causing the formaldehyde in the air to react with the test tablet. Finally, the test tablet is detected by the photoelectric sensor, and the formaldehyde concentration is detected by the spectrophotometry method, realizing active sampling detection. It can be integrated into the housing, saving space and being convenient to carry. When the house inspection personnel take the customers to inspect the house, the formaldehyde concentration test can be carried out simultaneously when visiting the interior of the house, making the customers more satisfied. Description of the Drawings

[0015] Figure 1 is the front sectional view of the structure of the present utility model;

[0016] Figure 2 is the front view of the structure of the present utility model;

[0017] Figure 3 is the present utility model Figure 1 The enlarged view of the structure at A in;

[0018] Figure 4 is an enlarged schematic view of the structure at position B in the present utility model; Figure 1 in the present utility model;

[0019] Figure 5 is a top view schematic of the structure of the connection base of the present utility model;

[0020] Figure 6 is a bottom view schematic of the structure of the screw cap of the present utility model.

[0021] The corresponding component names represented by the numbers and letters in the figure:

[0022] 1. Housing; 11. Air inlet; 12. Air outlet; 13. Air duct; 14. Connecting pipe; 15. Small fan; 16. Air outlet pipe; 17. Photoelectric sensor; 18. Battery compartment; 2. Placing seat; 21. Sealing cover; 22. Detection tablet; 23. Sealing ring; 24. Sealing groove; 25. Block; 3. Sampling pipe; 31. Hand-held pipe; 32. Connection base; 33. Tray; 34. Column; 35. Sampling piece; 36. Screw cap; 37. Extension pipe; 4. Air inlet end; 41. Filter screen; 5. Display screen; 6. Button; 7. Connecting band; 71. Plug; 72. Buckle. Specific embodiments

[0023] In order to better understand the technical means of the present utility model and implement it according to the content of the specification, the following combines the drawings and embodiments to further describe in detail the specific embodiments of the present utility model. The following embodiments are used to illustrate the present utility model but not to limit the scope of the present utility model.

[0024] Refer to the attached Figures 1-6 As shown, the convenient active formaldehyde sampling and detection device of Embodiment 1 includes: a housing 1, on which there are an air inlet 11 and an air outlet 12; the air inlet 11 can extract external air, make it enter the interior of the housing 1, and discharge it through the air outlet 12 after passing through the interior of the housing 1.

[0025] A tablet fixing mechanism provided on the housing 1; the tablet fixing mechanism can fix the detection tablet 22 on the housing 1; the tablet fixing mechanism includes: a placing seat 2 provided on the housing 1; a sealing cover 21 that can cover the placing seat 2, the sealing cover 21 is rotatably connected to the housing 1, and a torsion spring is provided at the rotation connection; and a detection tablet 22 provided inside the placing seat 2, a sealing ring 23 is provided on the placing seat 2, a sealing groove 24 adapted to the sealing ring 23 is provided on the sealing cover 21, and a block 25 for pressing against the detection tablet 22 is provided on the sealing cover 21.

[0026] The detection tablet 22 is placed inside the placement seat 2, and then the detection tablet 22 is enclosed inside the placement seat 2 by the closing cover 21. Since the closing cover 21 has a torsion spring, it can maintain a closed state and is convenient to open. The sealing ring 23 and the sealing groove 24 can increase the sealing performance when the closing cover 21 encloses the placement seat 2, preventing air from being extracted from the placement seat 2. In addition, when the closing cover 21 is closed, the abutting block 25 will tightly abut against the detection tablet 22 to prevent the detection tablet 22 from shaking.

[0027] A sampling mechanism detachably connected to the air inlet 11. The sampling mechanism can be connected to the air inlet 11. When air enters, it passes through the sampling mechanism. Since the air needs to pass through the sampling mechanism, the air can be sampled by the sampling mechanism. The sampling mechanism includes: a sampling tube 3 connected to the air inlet 11; a hand-held tube 31 provided at the other end of the sampling tube 3; and a collection module located on the hand-held tube 31.

[0028] The sampling tube 3 is used to connect to the air inlet 11. The hand-held tube 31 allows the tester to hold it, then expands the detection range and can perform detection in a narrow space. The collection module can collect formaldehyde in the air, and the collected formaldehyde can be tested by more precise formaldehyde detection equipment.

[0029] And a detection mechanism provided inside the housing 1. The detection mechanism includes: an air duct 13 provided inside the housing 1 and connected to the air inlet 11, and the other end of the air duct 13 is located at the tablet fixing mechanism; a connecting pipe 14 provided inside the housing 1 and connected to the air duct 13; a small fan 15 installed inside the housing 1, and the air inlet end of the small fan 15 is connected to the connecting pipe 14; an air outlet pipe 16 provided at the air outlet end of the small fan 15 and connected to the air outlet 12; and a photoelectric sensor 17 provided inside the housing 1 with its detection port facing the tablet fixing mechanism.

[0030] When the small fan 15 is working, it can generate negative pressure, so that air can enter the air duct 13 through the air inlet 11, then pass through the connecting pipe 14 into the fan, and finally be transported to the air outlet 12 through the exhaust air duct 13 to realize the circulation of air. Since the other end of the air duct 13 faces the tablet fixing mechanism, the air flowing in the air duct 13 will contact the detection tablet 22 fixed at the tablet fixing mechanism, causing the formaldehyde in the air to react with the detection tablet 22. Finally, the detection tablet 22 is detected by the photoelectric sensor 17, and the formaldehyde concentration is detected by spectrophotometry to realize active sampling detection. It can be integrated into the housing 1, saving space and being convenient to carry. When the house inspection personnel take the customers to inspect the house, the formaldehyde concentration test can be carried out while visiting the interior of the house, making the customers more satisfied.

[0031] The small fan 15 can control the amount of air extracted through the control system. When the air intake is adjusted to the average breathing volume of an individual, it can simulate the individual exposure detection of a person in an environment with different formaldehyde concentrations, and the extraction amount can be increased to simulate the situation of multiple-person individual exposure detection.

[0032] Further, one end of the air duct 13 facing the tablet fixing mechanism is inclined. One end of the connecting pipe 14 connected to the air duct 13 is located in the inclined section of the air duct 13. The photoelectric sensor 17 penetrates the air duct 13 facing the tablet fixing mechanism, and a battery compartment 18 is also provided on the housing 1.

[0033] Since one end of the air duct 13 is inclined, when the air circulates, it will contact the detection tablet 22 fixed on the tablet fixing mechanism due to the slow turning, so that the formaldehyde in the air adheres to the detection tablet 22. The inside of the battery compartment 18 is used to place the battery for power supply.

[0034] Further, the collection module includes: a connection seat 32 provided on the handheld tube 31 and communicating with its interior; a tray 33 provided inside the connection seat 32; several columns 34 fixed to the bottom of the tray 33 for connecting the connection seat 32; and a sampling sheet 35 provided inside the tray 33.

[0035] The extracted air will directly contact the sampling sheet 35 on the tray 33, and then enter the sampling tube 3 through the gaps between several columns 34 until it enters the housing 1 for circulation.

[0036] Further, the collection module also includes: a screw cap 36 that can be threadedly connected to the connection seat 32; an extension tube 37 provided on the screw cap 36 and communicating with its interior. The other end of the extension tube 37 is connected to a filtering component, and the filtering component includes: an air inlet end 4 and a filter screen 41 located inside the air inlet end 4.

[0037] The filtering component can filter the extracted air to avoid impurities affecting the reaction of formaldehyde, and the screw cap 36 can be threadedly connected to the connection seat 32 to facilitate the removal of the sampling sheet 35.

[0038] Further, a display screen 5 and a button 6 for data display are also provided on the housing 1.

[0039] Further, connection belts 7 are provided on both sides of the housing 1, and the other ends of the two groups of connection belts 7 are respectively provided with a buckle 72 and a plug 71 that cooperate with each other.

[0040] The connection belts 7 can be connected to each other through the buckle 72 and the plug 71, so that the device can be worn on the user's body to make it more convenient.

[0041] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. It should be noted that for those of ordinary skill in the art, several improvements and modifications can be made without departing from the technical principle of the present utility model, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A convenient active formaldehyde sampling and detection device, characterized in that, Comprising: A housing (1) provided with an air inlet (11) and an air outlet (12) thereon; A tablet fixing mechanism provided on the housing (1); A sampling mechanism detachably connected to the air inlet (11); And a detection mechanism provided inside the housing (1), the detection mechanism comprising: an air duct (13) provided inside the housing (1) and connected to the air inlet (11), the other end of the air duct (13) being located at the tablet fixing mechanism; a connecting pipe (14) provided inside the housing (1) and connected to the air duct (13); a small blower (15) installed inside the housing (1), the air inlet end of the small blower (15) being connected to the connecting pipe (14); an air outlet pipe (16) provided at the air outlet end of the small blower (15) and connected to the air outlet (12); and a photoelectric sensor (17) provided inside the housing (1) with its detection port facing the tablet fixing mechanism.

2. The portable active formaldehyde sampling and detection device according to claim 1, wherein One end of the air duct (13) facing the tablet fixing mechanism is inclined, one end of the connecting pipe (14) connected to the air duct (13) is located at the inclined section of the air duct (13), the photoelectric sensor (17) penetrates the air duct (13) towards the tablet fixing mechanism, and a battery compartment (18) is further provided on the housing (1).

3. The convenient active formaldehyde sampling and detection device according to claim 1, characterized in that, The tablet fixing mechanism includes: a placement seat (2) provided on the housing (1); a closing cover (21) capable of covering the placement seat (2), the closing cover (21) being rotatably connected to the housing (1), and a torsion spring being provided at the rotation connection; and a detection tablet (22) provided inside the placement seat (2).

4. The convenient active formaldehyde sampling and detection device according to claim 3, wherein A sealing ring (23) is provided on the placement seat (2), a sealing groove (24) adapted to the sealing ring (23) is provided on the closing cover (21), and a pressing block (25) for pressing the detection tablet (22) is provided on the closing cover (21).

5. The convenient active formaldehyde sampling and detection device according to claim 1, wherein, The sampling mechanism includes: a sampling pipe (3) connected to the air inlet (11); a hand-held pipe (31) provided at the other end of the sampling pipe (3); and a collection module located on the hand-held pipe (31).

6. The convenient active formaldehyde sampling and detection device according to claim 5, characterized in that, The collection module includes: a connection seat (32) provided on the hand-held pipe (31) and communicating with its interior; a tray (33) provided inside the connection seat (32); a plurality of columns (34) fixed to the bottom of the tray (33) for connecting the connection seat (32); and a sampling sheet (35) provided inside the tray (33).

7. The convenient active formaldehyde sampling and detection device according to claim 6, wherein, The collection module further includes: a screw cap (36) capable of being threadedly connected to the connection seat (32); an extension pipe (37) provided on the screw cap (36) and communicating with its interior, the other end of the extension pipe (37) being connected to a filter component, and the filter component includes: an air inlet end (4) and a filter screen (41) located inside the air inlet end (4).

8. The convenient active formaldehyde sampling and detection device according to claim 1, characterized in that, A display screen (5) and buttons (6) for data display are further provided on the housing (1).

9. The convenient active formaldehyde sampling and detection device according to claim 1, wherein, Connection belts (7) are provided on both sides of the housing (1), and a buckle (72) and a plug (71) that cooperate with each other are respectively provided at the other ends of the two groups of connection belts (7).

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