Building material formaldehyde detector

Abstract

The utility model discloses a building material formaldehyde detector which comprises a handheld handle and a detection shell, the detection shell is connected to the handheld handle, an air inlet is formed in one side of the detection shell, a supporting PCB is assembled in the detection shell, an output display screen is embedded in one side of the detection shell, and the output display screen is connected with the handheld handle. A formaldehyde detection sensor is arranged on the supporting PCB; the utility model relates to the technical field of building material detection, in particular to a building material formaldehyde detector, which is characterized in that a main body is divided into a detection shell and a handheld grab handle, the handheld grab handle has a holding function and serves as an installation bin of a power supply, and a sealing plate with a separation function is arranged in the detection shell. The gas inlet sleeve on the sealing plate, the gas inlet pipeline and the gas inlet are utilized to form a gas flowing channel independently corresponding to the methane detection sensor, and the situation that dust pollutes an internal PCB, and consequently the detection result is inaccurate is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of building materials detection, in particular to a formaldehyde detector for building materials. Background Technique

[0002] Formaldehyde is the most main pollutant endangering the indoor environment and human health in the modern home decoration process. Therefore, the formaldehyde content of modern building materials needs to be accurately controlled. In the process of controlling the formaldehyde content, the detection of the formaldehyde content is a very important task. At present, the detection of the formaldehyde content of building materials mainly relies on formaldehyde detectors, and the current formaldehyde detectors are mainly small detection instruments with a handheld structure. This kind of small detection instrument usually only has one air inlet, and the PCB board connected to the formaldehyde sensor is directly exposed to the air environment. After long-term use, it is easy to cause dust accumulation on the PCB board, affecting the accuracy of subsequent detection. In view of this, in-depth research on the above problems has led to the generation of this case. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a formaldehyde detector for building materials, which solves the problems of the existing background technique.

[0004] To achieve the above purposes, the utility model is realized through the following technical solutions: A formaldehyde detector for building materials, including a handheld grip and a detection housing, the detection housing is connected to the handheld grip, an air inlet is arranged on one side of the detection housing, a support PCB is assembled in the detection housing, an output display screen is embedded on one side of the detection housing, and a formaldehyde detection sensor is arranged on the support PCB;

[0005] The outside of the formaldehyde detection sensor is wrapped with an air inlet sleeve, the air inlet sleeve is sleeved on the formaldehyde detection sensor, one side of the air inlet sleeve extends out an air inlet pipe, the air inlet pipe is connected to the air inlet, and the end of the air inlet pipe is welded to the air inlet;

[0006] A closing plate is sleeved outside the air inlet sleeve, and the closing plate is isolated on one side of the support PCB of the detection housing;

[0007] A small axial flow fan is embedded in the air inlet sleeve, the end of the air inlet sleeve penetrates through one side of the detection housing, a first dust-proof plate is arranged at the end of the air inlet sleeve, and a second dust-proof plate is connected to the air inlet.

[0008] Preferably, the first dust-proof plate and the second dust-proof plate are respectively installed outside the air inlet and the air inlet sleeve through no less than two pairs of screws.

[0009] Preferably, both the first dust-proof plate and the second dust-proof plate are of a mesh plate structure.

[0010] Preferably, a control panel is provided on the handheld grip and connected to the output display screen.

[0011] Preferably, an electrical storage slot is provided on the handheld grip, and a storage battery is assembled in the electrical storage slot.

[0012] Preferably, the closing plate is fixed to the outside of the detection housing by no less than two pairs of screws with the support PCB.

[0013] Beneficial effects

[0014] The utility model provides a formaldehyde detector for building materials, which has the following beneficial effects: the formaldehyde detector for building materials has a main body divided into a detection housing and a handheld grip. The handheld grip, while having the function of holding, serves as an installation bin for the power supply. A closing plate with a partitioning function is arranged in the detection housing. The air inlet sleeve, air inlet pipe and air inlet on the closing plate form a gas flow channel separately corresponding to the methane detection sensor, avoiding dust pollution of the internal PCB and causing inaccurate detection results. Description of the drawings

[0015] Figure 1 It is the main sectional view structure diagram of a formaldehyde detector for building materials described in the utility model.

[0016] Figure 2 It is the side sectional view structure diagram of a formaldehyde detector for building materials described in the utility model.

[0017] Figure 3 It is the side view structure diagram of a formaldehyde detector for building materials described in the utility model.

[0018] In the figure: 1. Handheld grip; 2. Detection housing; 3. Air inlet; 4. Support PCB; 5. Output display screen; 6. Formaldehyde detection sensor; 7. Air inlet sleeve; 8. Air inlet pipe; 9. Closing plate; 10. Small axial flow fan; 11. First dust-proof plate; 12. Second dust-proof plate; 13. Storage battery. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1-3, the present utility model provides an implementation scheme: during the formaldehyde detection process of modern buildings, a handheld small formaldehyde detector is usually used. However, the existing small detection instruments usually only have one air inlet, and the PCB board connected to the formaldehyde sensor is directly exposed to the air environment. After long-term use, dust is likely to accumulate on the PCB board, affecting the accuracy of subsequent detection. Therefore, this application discloses a formaldehyde detector for building materials. The device mainly consists of two parts, including a handheld grip 1 and a detection housing 2. The detection housing 2 is the installation space for detecting electrical components. The detection housing 2 is connected to the handheld grip 1. In addition to providing a holding function, the handheld grip 1 also serves as the installation position for the power supply, which can ensure a more reasonable spatial distribution. The detection housing 2 is connected to the handheld grip 1. An air inlet 3 is provided on one side of the detection housing 2. The air inlet 3 is used for active air intake. A support PCB 4 is assembled in the detection housing 2. The support PCB 4 is used to connect to the formaldehyde detection sensor 6 and visualize the detection data of the formaldehyde detection sensor 6, which is displayed on the output display screen 5;

[0021] In order to provide dust-proof protection for the support PCB 4, the support PCB 4 is isolated in the detection housing 2 by a closed plate 9. An air intake sleeve 7 through which the formaldehyde detection sensor 6 passes is provided on the closed plate 9. An air inlet pipeline 8 is provided on the radial side of the air intake sleeve 7 for connecting to the air inlet 3. A small axial flow fan 10 is installed at the air outlet end of the air intake sleeve 7. The air in the area to be detected is pumped into the air intake sleeve 7 from the side of the air inlet 3 through the axial flow action of the small axial flow fan 10. The formaldehyde content in the air is detected by the air flowing through the formaldehyde detection sensor 6. In this way, both the air formaldehyde content can be detected and the PCB board can be prevented from being polluted by dust in the air;

[0022] According to the attached Figures 1-3 It can be seen from the specification that the end of the air intake sleeve 7 penetrates one side of the detection housing 2. A first dust-proof plate 11 is provided at the end of the air intake sleeve 7. A second dust-proof plate 12 is connected to the air inlet 3. The first dust-proof plate 11 and the second dust-proof plate 12 are respectively arranged at the air inlet end and the air outlet end of the air intake passage composed of the air intake sleeve 7 and the air inlet pipeline 8, further preventing dust from entering the air intake sleeve 7 along with the air and polluting the formaldehyde detection sensor 6 for detection, affecting the detection accuracy.

[0023] As a preferred scheme, furthermore, the first dust-proof plate 11 and the second dust-proof plate 12 are respectively installed outside the air inlet 3 and the air intake sleeve 7 through no less than two pairs of screws, which is convenient for disassembly and assembly.

[0024] As a preferred scheme, furthermore, both the first dust-proof plate 11 and the second dust-proof plate 12 are of a mesh plate structure.

[0025] As a preferred solution, further, a control panel is provided on the handheld grip 1 and is connected to the output display screen 5 for adjusting the output display content.

[0026] As a preferred solution, further, an electrical storage slot is provided on the handheld grip 1, and a storage battery 13 is assembled in the electrical storage slot to supply power to the PCB.

[0027] As a preferred solution, further, the closing plate 9 is fixed to the support PCB 4 outside the detection housing 2 by no less than two pairs of screws. The closing plate 9 is detachable for overhauling and replacing internal electrical components.

[0028] Generally speaking, for this formaldehyde detector for building materials, the main body is divided into a detection housing 2 and a handheld grip 1. While the handheld grip 1 has the function of holding, it also serves as an installation bin for the power supply. A closing plate 9 with a partitioning function is provided in the detection housing 2. The air intake sleeve 7, the air intake pipeline 8 and the air intake port 3 on the closing plate 9 form a gas flow channel corresponding to the methane detection sensor separately, avoiding dust pollution of the internal PCB and causing inaccurate detection results.

[0029] 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 formaldehyde detector for building materials, comprising a handheld handle (1) and a detection housing (2), wherein the detection housing (2) is connected to the handheld handle (1), an air inlet (3) is arranged on one side of the detection housing (2), a supporting PCB (4) is installed in the detection housing (2), and an output display screen (5) is embedded on one side of the detection housing (2), characterized in that: The supporting PCB (4) is provided with a formaldehyde detection sensor (6); The formaldehyde detection sensor (6) is wrapped with an air intake sleeve (7) on the outside, the air intake sleeve (7) is sleeved on the formaldehyde detection sensor (6), an air intake pipeline (8) extends from one side of the air intake sleeve (7), the air intake pipeline (8) is connected to the air inlet (3), and the end of the air intake pipeline (8) is welded to the air inlet (3); The air inlet sleeve (7) is sleeved with a closing plate (9) on its exterior, and the closing plate (9) is isolated on one side of the detection housing (2) that supports the PCB (4); A small axial flow fan (10) is embedded inside the air intake sleeve (7), the end of the air intake sleeve (7) passes through one side of the detection shell (2), a first dustproof plate (11) is provided at the end of the air intake sleeve (7), and a second dustproof plate (12) is connected to the air inlet (3).

2. A building material formaldehyde detector according to claim 1, characterized in that: The first dustproof plate (11) and the second dustproof plate (12) are respectively installed on the outside of the air inlet (3) and the air inlet sleeve (7) by means of no less than two pairs of screws.

3. A building material formaldehyde detector according to claim 2, characterized in that: The first dustproof plate (11) and the second dustproof plate (12) are both mesh plate structures.

4. A building material formaldehyde detector according to claim 3, characterized in that: The handheld handle (1) is provided with a control panel connected to the output display screen (5).

5. A building material formaldehyde detector according to claim 4, characterized in that: The handheld handle (1) is provided with an electrical storage slot, in which a storage battery (13) is installed.

6. A building material formaldehyde detector according to claim 5, characterized in that: The closing plate (9) is fixed to the outside of the detection housing (2) via no less than two pairs of screws and the supporting PCB (4).

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