A tester with a water blocking structure

Abstract

The utility model relates to test appearance technical field, concretely relates to a test appearance with water retaining structure, including casing, be equipped with the placing cavity in the casing, be equipped with the circuit board in the placing cavity, the circuit board is equipped with the sensor, one end of casing is equipped with the water retaining part, the water retaining part is equipped with the air inlet, the gas outlet and the water blocking cavity, the bottom of water blocking cavity is equipped with the rebound surface of casing, the rebound surface is equipped with the water outlet that communicates with water blocking cavity, the air inlet communicates with one end of water blocking cavity, the gas outlet communicates with the other end of water blocking cavity, the gas outlet communicates with the placing cavity, the utility model discloses through setting up water retaining part, water blocking cavity, rebound surface and water outlet, the airflow of containing saliva enters water blocking cavity, will be guided to the bottom rebound surface by the water retaining board, saliva is weak because of weight and rebound force, will discharge casing through the water outlet, and pure gas can rebound to the gas outlet and enter the placing cavity, can accurate separation saliva and gas in blowing gas.

Description

Technical Field

[0001] This utility model relates to the field of testing instrument technology, specifically to a testing instrument with a water-blocking structure. Background Technology

[0002] In fields such as traffic enforcement, industrial safety monitoring, and healthcare, breathalyzers have become crucial on-site testing equipment, such as alcohol testers, hydrogen sulfide testers, and acetone testers. The core detection logic of these instruments relies on the user actively blowing air into the device. The gas to be tested enters the instrument through the blowing channel, comes into contact with a dedicated sensor, and the sensor outputs an electrical signal based on the gas composition and concentration, ultimately converting it into a detection result.

[0003] Because the testing process requires the user to blow air directly into the instrument's air outlet, and the blowing action is difficult to precisely control the stability and purity of the airflow, saliva in the user's mouth can easily enter the instrument's internal air passage with the exhaled airflow, thereby corroding the detection sensor. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by providing a testing instrument with a water-blocking structure.

[0005] The objective of this utility model is achieved through the following technical solution: a tester with a water-blocking structure, comprising a housing; a placement cavity is provided inside the housing; a circuit board is provided inside the placement cavity; and a sensor is provided on the circuit board; One end of the housing is provided with a water-blocking component; the water-blocking component is provided with an air inlet, an air outlet and a water-blocking cavity; the housing is provided with a rebound surface at the bottom of the water-blocking cavity; the rebound surface is provided with a water outlet communicating with the water-blocking cavity; the air inlet is connected to one end of the water-blocking cavity; the air outlet is connected to the other end of the water-blocking cavity; the air outlet is connected to the placement cavity.

[0006] The present invention is further configured such that the cross-sectional area of ​​the water outlet is smaller than the area of ​​the rebound surface.

[0007] The present invention is further configured such that a baffle plate is provided at the top of the water-blocking cavity; the baffle plate is located between the air inlet and the air outlet.

[0008] The present invention is further configured such that the height of the air inlet is higher than the height of the air outlet.

[0009] The present invention is further configured such that the height of the bottom surface of the baffle plate is lower than the height of the air inlet.

[0010] The present invention is further configured such that the air outlet is directly opposite the sensor.

[0011] The present invention is further configured such that the air outlet is a funnel-shaped structure with its opening facing the placement cavity.

[0012] The present invention is further configured such that the bottom of the housing is provided with an exhaust port communicating with the placement cavity.

[0013] The present invention is further configured such that the water-blocking component is detachably connected to the housing.

[0014] The present invention is further configured such that the housing is provided with a slot; and the water-blocking component is provided with a block that cooperates with the slot.

[0015] The beneficial effects of this utility model are as follows: By setting up a water-blocking component, a water-blocking cavity, a rebound surface, and a water outlet, the airflow containing saliva enters the water-blocking cavity and is guided by the water-blocking plate to the bottom rebound surface. Due to its weight and weak rebound force, the saliva will be discharged from the shell through the water outlet, while the pure gas can rebound to the air outlet and enter the placement cavity, thereby accurately separating the saliva and gas in the blowing. Attached Figure Description

[0016] The utility model will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present utility model. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 yes Figure 2 A magnified view of part A in the middle; The components are: 1. Housing; 11. Placement cavity; 12. Circuit board; 13. Sensor; 2. Water baffle; 21. Air inlet; 22. Air outlet; 3. Water blocking cavity; 4. Rebound surface; 41. Water outlet; 5. Water baffle plate; 6. Exhaust port; 71. Slot; 72. Block. Detailed Implementation

[0018] The present invention will be further described in conjunction with the following embodiments.

[0019] Depend on Figures 1 to 3As can be seen, the tester with a water-blocking structure described in this embodiment includes a housing 1; a placement cavity 11 is provided inside the housing 1; a circuit board 12 is provided inside the placement cavity 11; a sensor 13 is provided on the circuit board 12; a water-blocking component 2 is provided at one end of the housing 1; the water-blocking component 2 is provided with an air inlet 21, an air outlet 22, and a water-blocking cavity 3; a rebound surface 4 is provided at the bottom of the water-blocking cavity 3 on the housing 1; the rebound surface 4 is provided with a water outlet 41 communicating with the water-blocking cavity 3; the air inlet 21 is connected to one end of the water-blocking cavity 3; the air outlet 22 is connected to the other end of the water-blocking cavity 3; and the air outlet 22 is connected to the placement cavity 11. In the tester with a water-blocking structure described in this embodiment, a water-blocking plate 5 is provided at the top of the water-blocking cavity 3; the water-blocking plate 5 is located between the air inlet 21 and the air outlet 22.

[0020] Specifically, in the tester with a water-blocking structure described in this embodiment, when testing a user, the user blows air into the air inlet 21. The gas containing saliva enters the water-blocking cavity 3 and moves downward under the obstruction of the water baffle 5, thereby reaching the rebound surface 4. Some of the gas containing saliva is directly discharged from the water outlet 41 to the outside, while the other part of the gas containing saliva is rebounded through the rebound surface 4. Since the rebound ability of saliva is weak and the rebound ability of gas is strong, only the gas can rebound to the height of the air outlet 22, thereby entering the placement cavity 11 and contacting the sensor 13. This effectively prevents saliva from entering the placement cavity 11 and causing corrosion of the sensor 13.

[0021] The baffle plate 5 is located between the air inlet 21 and the air outlet 22, forming an airflow interception barrier. It forces the horizontal airflow entering from the air inlet 21 to change direction and flow downward, preventing the airflow from flowing directly from the air inlet 21 to the air outlet 22, which would cause the saliva to enter the placement cavity 11 without separation. At the same time, the blocking effect of the baffle plate 5 can prolong the residence time of the airflow in the water-blocking cavity 3, allowing the saliva to have more time to settle onto the rebound surface 4, further improving the air-water separation effect and minimizing the risk of corrosion of the sensor 13.

[0022] In this embodiment, a tester with a water-blocking structure is described, wherein the cross-sectional area of ​​the water outlet 41 is smaller than the area of ​​the rebound surface 4. The smaller cross-sectional area of ​​the water outlet 41 can prevent the airflow from flowing out of the water outlet 41 too quickly, ensuring that sufficient airflow pressure is maintained in the water-blocking cavity 3, and ensuring that the gas can be rebounded to the air outlet 22.

[0023] In this embodiment, a tester with a water-blocking structure is described, in which the height of the air inlet 21 is higher than the height of the air outlet 22. Utilizing gravity guidance, the higher position of the air inlet 21 allows the saliva-laden airflow to flow more easily towards the downward-facing rebound surface 4 under gravity after entering the water-blocking chamber 3, reducing the possibility of the airflow directly impacting the air outlet 22 due to inertia. Simultaneously, the height difference design places the air outlet 22 at a lower downstream position in the airflow movement, conforming to the gas flow trend from high to low. This not only assists the water-blocking plate 5 in intercepting saliva but also ensures smooth airflow and prevents airflow blockage.

[0024] In this embodiment, a tester with a water-blocking structure is described, wherein the bottom surface of the water-blocking plate 5 is lower than the height of the air inlet 21. Because the bottom surface of the water-blocking plate 5 is lower than the air inlet 21, it completely covers the airflow output path of the air inlet 21, preventing airflow from bypassing the water-blocking plate 5 and directly entering the air outlet 22 from above the air inlet 21.

[0025] In this embodiment, a tester with a water-blocking structure is described, in which the air outlet 22 is positioned directly opposite the sensor 13. The air outlet 22's orientation relative to the sensor 13 allows the gas to be tested, after passing through the water-blocking mechanism, to be directly delivered to the detection area of ​​the sensor 13, reducing diffusion loss of the gas within the placement chamber 11.

[0026] The tester with a water-blocking structure described in this embodiment has an air outlet 22 that is a funnel-shaped structure with its opening facing the placement cavity 11. The funnel-shaped structure has a flow-expanding and guiding function, which can uniformly diffuse the concentrated airflow discharged from the water-blocking cavity 3 towards the sensor 13, thereby increasing the contact area between the gas and the sensor 13.

[0027] The tester with a water-blocking structure described in this embodiment has an exhaust port 6 at the bottom of the housing 1, which communicates with the placement cavity 11. The exhaust port 6 is located at the bottom of the housing 1 and can promptly discharge the exhaust gas that has come into contact with the sensor 13.

[0028] This embodiment of the tester with a water-blocking structure describes a water-blocking component 2 that is detachably connected to the housing 1. The housing 1 is provided with a slot 71; the water-blocking component 2 is provided with a locking block 72 that engages with the slot 71. This arrangement facilitates the assembly and disassembly of the water-blocking component 2 from the housing 1.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A testing instrument with a water-blocking structure, characterized in that: Includes a housing (1); the housing (1) has a placement cavity (11); the placement cavity (11) has a circuit board (12); the circuit board (12) has a sensor (13); One end of the housing (1) is provided with a water-blocking component (2); the water-blocking component (2) is provided with an air inlet (21), an air outlet (22) and a water-blocking cavity (3); the housing (1) is provided with a rebound surface (4) at the bottom of the water-blocking cavity (3); the rebound surface (4) is provided with a water outlet (41) communicating with the water-blocking cavity (3); the air inlet (21) is connected to one end of the water-blocking cavity (3); the air outlet (22) is connected to the other end of the water-blocking cavity (3); the air outlet (22) is connected to the placement cavity (11).

2. The testing instrument with a water-blocking structure according to claim 1, characterized in that: The cross-sectional area of ​​the outlet (41) is smaller than the area of ​​the rebound surface (4).

3. The testing instrument with a water-blocking structure according to claim 1, characterized in that: The top of the water-blocking cavity (3) is provided with a baffle plate (5); the baffle plate (5) is located between the air inlet (21) and the air outlet (22).

4. The testing instrument with a water-blocking structure according to claim 3, characterized in that: The height of the air inlet (21) is higher than the height of the air outlet (22).

5. A testing instrument with a water-blocking structure according to claim 3, characterized in that: The height of the bottom surface of the baffle plate (5) is lower than the height of the air inlet (21).

6. The testing instrument with a water-blocking structure according to claim 1, characterized in that: The air outlet (22) is positioned directly opposite the sensor (13).

7. A testing instrument with a water-blocking structure according to claim 1, characterized in that: The air outlet (22) is a funnel-shaped structure with its opening facing the placement cavity (11).

8. A testing instrument with a water-blocking structure according to claim 1, characterized in that: The bottom of the housing (1) is provided with an exhaust port (6) that communicates with the placement cavity (11).

9. A testing instrument with a water-blocking structure according to claim 1, characterized in that: The water-blocking component (2) is detachably connected to the housing (1).

10. A testing instrument with a water-blocking structure according to claim 9, characterized in that: The housing (1) is provided with a slot (71); the water-blocking component (2) is provided with a block (72) that cooperates with the slot (71).

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