Automatic formaldehyde detection equipment

Abstract

The utility model belongs to the technical field of formaldehyde detection, and discloses an automatic formaldehyde detection device which comprises a shell, a display screen and keys are arranged on the shell, a controller, a storage battery and an electrochemical formaldehyde sensor are arranged in the shell, an air channel is arranged in the shell, the air channel is fixed on the shell in a penetrating mode and communicated with the outside, and an air outlet is formed in the shell. And the electrochemical formaldehyde sensor is fixedly mounted in the air passage through a bracket. According to the scheme, the air channel, the air extracting pump and the air extracting pipe are additionally arranged, the electrochemical formaldehyde sensor and the controller are matched, a formaldehyde concentration signal in air can be directly and continuously converted into an electric signal in real time, and after data processing is conducted through the controller, a measurement result is displayed on the display screen. And the position of the exhaust pipe can be flexibly adjusted in cooperation with an adjusting structure and a telescopic connecting mechanism, so that the equipment can adapt to various test conditions from the ground to a high place or a narrow space which is difficult to touch.

Description

Technical Field

[0001] The utility model relates to the technical field of formaldehyde detection, in particular to an automatic formaldehyde detection device. Background Art

[0002] The formaldehyde detector is an instrument for detecting formaldehyde, which can realize the rapid semi-quantitative detection of formaldehyde in indoor air on site. It has the characteristics of simple structure, small size, easy to carry and use, and intuitiveness. It can be widely used for on-site quantitative and qualitative detection of formaldehyde in the air of living rooms, indoors, residential areas, public places, living places and factory workshops.

[0003] The portable formaldehyde detector is a brand-new instrument for monitoring indoor formaldehyde concentrations. It overcomes the technical bottlenecks of traditional formaldehyde detectors, which are cumbersome to use, expensive, bulky, and can only detect once. Instead, it uses an electrochemical formaldehyde sensor to detect formaldehyde through an electrochemical reaction. This sensor contains an electrolyte and two electrodes (a working electrode and a reference electrode). When formaldehyde molecules enter the sensor and come into contact with the electrolyte, they undergo an oxidation or reduction reaction on the working electrode, generating an electric current. The magnitude of this current is proportional to the formaldehyde concentration, so the formaldehyde concentration can be determined by measuring the current.

[0004] Existing portable formaldehyde detectors detect formaldehyde concentrations in various places in the room by hand-held means. However, the user's arm length is limited, which restricts the range of movement of the formaldehyde detector. For example, it cannot reach high areas in the room, and it is also difficult to enter small operating spaces such as inside cabinets and behind sofas due to arm problems. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose an automatic formaldehyde detection device.

[0006] In order to solve the above-mentioned background technical problems, the present invention adopts the following technical solutions:

[0007] A formaldehyde automatic detection device includes a shell, a display screen and buttons are provided on the shell, a controller, a battery and an electrochemical formaldehyde sensor are provided in the shell, an airway is provided in the shell, the airway is fixed on the shell and connected to the outside world, the electrochemical formaldehyde sensor is fixedly installed in the airway via a bracket, and an air pump is fixedly installed at one end of the airway located in the shell.

[0008] A through hole communicating with the interior of the shell is provided on the top, an exhaust pipe slidably connected to the through hole is inserted into the through hole, an adjustment mechanism for adjusting the height of the exhaust pipe is provided on the shell, and a telescopic connection mechanism is connected to the bottom end of the exhaust pipe, which is connected to the exhaust pump.

[0009] As a further description of the above technical solution: the adjustment mechanism includes a connecting block fixedly connected to the exhaust pipe, and a movable opening adapted to the connecting block is provided on the back of the shell. The connecting block extends to the outside of the shell through the movable opening, and a sliding ring is fixedly connected to the outside of the connecting block. A limiting plate adapted to it is inserted on the sliding ring, and the limiting plate is fixedly connected to the shell.

[0010] As a further description of the above technical solution: the sliding ring is provided with a knob threadedly connected at the center of the surface, and the bottom of the knob is fitted and connected to the front surface of the limit plate.

[0011] As a further description of the above technical solution: the telescopic connection mechanism includes a telescopic hose, one end of the telescopic hose is connected to the exhaust pipe, and the other end of the telescopic hose is connected to a filter. The filter is fixedly installed in the shell, and the filter is provided with a connecting pipe connected to the filter, and the connecting pipe is connected to the exhaust pump.

[0012] As a further description of the above technical solution: a dustproof net is provided in one end of the air duct communicating with the outside world.

[0013] As a further description of the above technical solution: a protective cover is fixedly connected to the upper surface of the exhaust pipe, and a plurality of air inlet holes are opened on the surface of the protective cover.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] 1. This solution, by adding an airway, an air pump, and an air extraction tube, combined with an electrochemical formaldehyde sensor and controller, can directly and continuously convert the formaldehyde concentration signal in the air into an electrical signal in real time. The controller processes the data and displays the measurement results on a display screen. The adjustable structure and telescopic connection mechanism allow for flexible adjustment of the air extraction tube position, enabling the equipment to adapt to a variety of testing conditions, from ground level to high altitudes and even in hard-to-reach, narrow spaces.

[0016] 2. This solution cleans the gas entering the airway by adding filters and isolation and dust-proof accessories, reduces dust coverage on the electrochemical formaldehyde sensor, and ensures the accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the display screen of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the connection between the adjustment mechanism and the housing of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the electrochemical formaldehyde sensor connected to the airway of the utility model;

[0021] Figure 5 This is a schematic structural diagram of the protective cover of the utility model.

[0022] Description of the numbers in the figure:

[0023] 1. Housing; 2. Display screen; 3. Controller; 4. Battery; 5. Electrochemical formaldehyde sensor; 6. Air duct; 7. Air pump; 8. Through hole; 9. Air exhaust pipe; 10. Adjustment mechanism; 101. Connecting block; 102. Movable port; 103. Sliding ring; 104. Limiting plate; 105. Knob; 11. Telescopic connecting mechanism; 111. Telescopic hose; 112. Filter; 113. Connecting pipe; 12. Dust net; 13. Protective cover; 14. Air inlet. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only 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 ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] Example 1

[0026] See also Figure 1-5 An automated formaldehyde detection device includes a housing 1 equipped with a display screen 2 and buttons. Users can view real-time data and perform operations directly on the device, significantly enhancing the user experience. Housing 1 houses a controller 3, a battery 4, and an electrochemical formaldehyde sensor 5. The built-in controller and battery enable the device to operate offline for extended periods, increasing its applicability in environments without power.

[0027] An air duct 6 is provided in the housing 1. The air duct 6 is fixed to the housing 1 and communicates with the outside world. The electrochemical formaldehyde sensor 5 is fixedly mounted in the air duct 6 via a bracket. An air pump 7 is fixedly mounted at one end of the air duct 6 located in the housing 1. A through hole 8 is provided at the top of the housing 1 and communicates with the interior thereof. An air extraction pipe 9 is inserted through the through hole 8 and is slidably connected thereto. An adjustment mechanism 10 for adjusting the height of the air extraction pipe 9 is provided on the housing 1. The bottom end of the air extraction pipe 9 is connected to a telescopic connection mechanism 11, which is connected to the air extraction pump 7. The telescopic connection mechanism 11 includes a telescopic hose 111. One end of the telescopic hose 111 is connected to the air extraction pipe 9 and the other end is connected to the air extraction pump 7.

[0028] The principle of this formaldehyde detection device is as follows: A suction pump 7 delivers ambient air through a suction pipe 9 into an airway 6, where an electrochemical formaldehyde sensor 5 begins detecting formaldehyde molecules in the passing air. The electrochemical formaldehyde sensor 5 detects formaldehyde levels by measuring the current generated by the reaction between formaldehyde molecules and the sensor electrodes. The magnitude of this current is proportional to the formaldehyde concentration.

[0029] Controller 3 receives signals from the electrochemical formaldehyde sensor, processes and converts them, and calculates the real-time formaldehyde concentration. This processed data is then displayed on display 2, allowing the user to directly view the current formaldehyde concentration and perform further operations using on-device buttons, such as setting alarm thresholds and viewing historical data.

[0030] The battery 4 provides power for the entire device, ensuring continuous operation even without an external power source. This feature is particularly suitable for mobile testing or use in locations where power is not convenient.

[0031] In addition, the height and position of the exhaust pipe 9 can be flexibly adjusted by the adjustment mechanism 10, so that the equipment can adapt to various test conditions from the ground to high places or narrow spaces that are difficult to reach.

[0032] Specific: such as Figure 1 、 3 As shown, the adjustment mechanism 10 includes a connecting block 101 fixedly connected to the exhaust pipe 9. A movable opening 102 adapted to the connecting block 101 is provided on the back of the housing 1. The connecting block 101 extends to the outside of the housing 1 through the movable opening 102. A sliding ring 103 is fixedly connected to the outside of the connecting block 101. A matching limit plate 104 is inserted through the sliding ring 103, and the limit plate 104 is fixedly connected to the housing 1. A knob 105 is threadedly connected at the center of the surface of the sliding ring 103, and the bottom of the knob 105 is affixed to the front surface of the limit plate 104.

[0033] When the adjustment mechanism 10 is in use, the sliding ring 103 moves upward by pushing the knob 105 upward, thereby driving the connecting block 101 and the exhaust pipe 9 to move upward, thereby adjusting the height of the exhaust pipe 9. By turning the knob 105, the bottom of the knob 105 presses down on the limit plate 104 to increase the friction force, thereby fixing the exhaust pipe 9 after moving upward. After use, the exhaust pipe 9 is moved to the inside of the shell 1 by pushing the knob 105 downward, thereby playing a protective role when idle.

[0034] Example 2

[0035] Based on the above embodiment, the telescopic connection mechanism 11 includes a filter 112, which is fixedly installed in the shell 1. One end of the telescopic hose 111 is connected to the exhaust pipe 9 and the other end is connected to the filter 112. The filter 112 is provided with a connecting pipe 113 connected to it, and the connecting pipe 113 is connected to the exhaust pump 7.

[0036] The utility model draws air into the airway 6 through the vacuum pump 7, and the electrochemical formaldehyde sensor 5 in the airway 6 detects the air entering the airway 6. The air entering the airway 6 is first filtered by the filter 112 to remove dust, thereby ensuring the cleanliness of the electrochemical formaldehyde sensor 5 in the airway 6, reducing dust covering the electrochemical formaldehyde sensor 5, and ensuring the accuracy of the detection.

[0037] A dust screen 12 is provided in one end of the air duct 6 that is in communication with the outside world. A protective cover 13 is fixedly connected to the upper surface of the exhaust pipe 9, and a plurality of air inlet holes 14 are provided on the surface of the protective cover 13. Both the dust screen 12 and the protective cover 13 are used for dust protection.

[0038] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed in the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. An automated formaldehyde detection device, comprising a housing (1), wherein the housing (1) is provided with a display screen (2) and buttons, and wherein a controller (3), a battery (4) and an electrochemical formaldehyde sensor (5) are provided within the housing (1), characterized in that: An air passage (6) is provided in the housing (1), the air passage (6) being fixedly provided on the housing (1) and communicating with the outside world, the electrochemical formaldehyde sensor (5) being fixedly mounted in the air passage (6) via a bracket, and an air pump (7) being fixedly mounted at one end of the air passage (6) located in the housing (1); The top of the shell (1) is provided with a through hole (8) communicating with the interior thereof, and an air extraction pipe (9) slidably connected thereto is inserted into the through hole (8). The shell (1) is provided with an adjusting mechanism (10) for adjusting the height of the air extraction pipe (9), and the bottom end of the air extraction pipe (9) is connected to a telescopic connecting mechanism (11), and the telescopic connecting mechanism (11) is connected to the air extraction pump (7).

2. The formaldehyde automatic detection equipment according to claim 1, characterized in that: The regulating mechanism (10) comprises a connecting block (101) fixedly connected to the exhaust pipe (9); a movable opening (102) adapted to the connecting block (101) is provided on the back of the shell (1); the connecting block (101) extends to the outside of the shell (1) through the movable opening (102); a sliding ring (103) is fixedly connected to the outside of the connecting block (101); a limiting plate (104) adapted to the sliding ring (103) is inserted through the sliding ring (103); and the limiting plate (104) is fixedly connected to the shell (1).

3. The formaldehyde automatic detection equipment according to claim 2, characterized in that: The sliding ring (103) is provided with a knob (105) threadedly connected at the center of the surface, and the bottom of the knob (105) is closely connected to the front surface of the limiting plate (104).

4. The formaldehyde automatic detection equipment according to claim 1, characterized in that: The telescopic connection mechanism (11) comprises a telescopic hose (111), one end of the telescopic hose (111) is connected to the air extraction pipe (9), the other end of the telescopic hose (111) is connected to a filter (112), the filter (112) is fixedly mounted in the housing (1), and a connecting pipe (113) communicating with the filter (112) is provided on the filter (112), and the connecting pipe (113) is connected to the air extraction pump (7).

5. The formaldehyde automatic detection equipment according to claim 1, characterized in that: A dustproof net (12) is provided in one end of the air duct (6) communicating with the outside world.

6. The formaldehyde automatic detection equipment according to claim 1, characterized in that: A protective cover (13) is fixedly connected to the upper surface of the exhaust pipe (9), and a plurality of air inlet holes (14) are provided on the surface of the protective cover (13).

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