Gas detection device convenient to hold by hand

Abstract

The utility model discloses a gas detection device convenient to hold by hand, which relates to the technical field of gas detection and comprises a detector body and a detection component arranged at the top of the detector body. According to the gas detection device convenient to hold by hand, by additionally arranging the sucking pump, negative pressure is formed in the ultraviolet lamp chamber, gas is sucked into the ionization chamber through the multi-section type sucking pipe, the stability of a photoion sensor can be effectively improved through the stable gas flow speed, and the multi-section type sucking pipe is composed of multiple sections of movably connected sleeves; when in use, the ultraviolet lamp chamber ionizes organic matter molecules into positive and negative ions which can be detected by the PID sensor, and the PID sensor further converts positive and negative charges of ionized gas into current signals to realize measurement of gas concentration. And after being processed by a built-in single chip microcomputer of the detector body, a result is fed back to a display screen above the front surface in real time.

Description

Technical Field

[0001] The utility model relates to the technical field of gas detection, in particular to a handheld gas detection device. Background Art

[0002] The main sources of TVOC in the interior decoration process are paints, coatings and adhesives. To ensure the health of workers, the construction environment needs to be tested during construction, and the locations where the standards are exceeded need to be purified after testing.

[0003] There are many types of portable TVOC gas detectors in the prior art, but in actual use, on the one hand, the operator needs to hold the detector body all the time to move it, which is inconvenient to use; on the other hand, the existing TVOC gas detectors only rely on the slow volatilization of the gas to be tested in the environment into the ionization chamber, and the accuracy and stability of the detection results will be greatly reduced.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a handheld gas detection device is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a handheld gas detection device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a convenient handheld gas detection device, comprising a detector body and a detection component, a detection component is arranged on the top of the detector body, the detection component comprises an outer cover, an ultraviolet lamp chamber, a PID sensor, a signal line, an air pump and a multi-section air exhaust pipe, an ultraviolet lamp chamber is arranged inside the outer cover, and a PID sensor is fixed inside the ultraviolet lamp chamber by a bracket, a signal line is externally connected to the bottom of the PID sensor, and the signal line is electrically connected to the built-in single-chip microcomputer of the detector body, an air pump is arranged at the bottom of the ultraviolet lamp chamber, and a multi-section air exhaust pipe is externally connected to the top of the ultraviolet lamp chamber.

[0007] Furthermore, the ultraviolet lamp chamber ionizes organic molecules into positive and negative ions that can be detected by the PID sensor, and the PID sensor converts the positive and negative charges of the ionized gas into current signals to measure the gas concentration.

[0008] Furthermore, the multi-section exhaust pipe is composed of multiple sections of movably connected sleeves, and the exhaust pump forms a negative pressure in the ultraviolet lamp chamber and draws the gas into the ionization chamber through the multi-section exhaust pipe.

[0009] Furthermore, a display screen is arranged above the front of the detector body, and operation keys are arranged in the middle of the front of the detector body.

[0010] Furthermore, a buzzer sounding hole is provided at the lower front side of the detector body, and a charging port is provided on the bottom plane of the detector body.

[0011] Furthermore, anti-skid buckles are symmetrically provided on both sides of the detector body, and the inner walls of the anti-skid buckles are provided with anti-skid grooves.

[0012] Furthermore, an alligator back clip is fixed by screws on the back of the detector body, and a lifting ring is rotatably installed on the top of the alligator back clip.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. When the utility model is in use, an alligator back clip is provided on the back of the detector body, so that the user can carry the TVOC gas detector on the belt. In addition, a hanging ring is rotatably installed on the top of the alligator back clip, which provides more functional options for carrying. In addition, a buzzer sounding hole is provided at the bottom of the front of the detector body of the present application. When the gas concentration exceeds the standard, an alarm will be sounded, and the user does not need to always pay attention to the numerical prompts on the display screen, which is more convenient to use.

[0015] 2. When the utility model is in use, a vacuum pump is added to form a negative pressure in the ultraviolet lamp chamber and the gas is drawn into the ionization chamber through a multi-section vacuum pipe. The stable gas flow rate can effectively improve the stability of the photoionization sensor, wherein the multi-section vacuum pipe is composed of a plurality of sleeves with movable connections, and can detect the gas deep in the structure that cannot be reached by human hands. When in use, the ultraviolet lamp chamber ionizes the organic molecules into positive and negative ions that can be detected by the PID sensor. The PID sensor further converts the positive and negative charges of the ionized gas into current signals to measure the gas concentration. After being processed by the built-in single-chip microcomputer of the detector body, the results are fed back in real time to the display screen on the upper front. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall front view structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall rear view structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the detection component of the utility model.

[0019] In the figure: 1. Detector body; 2. Display screen; 3. Operation key; 4. Buzzer sound hole; 5. Charging port; 6. Anti-slip buckle; 7. Alligator back clip; 8. Hanging ring; 9. Detection component; 901. Outer cover; 902. UV lamp chamber; 903. PID sensor; 904. Signal line; 905. Vacuum pump; 906. Multi-section vacuum pipe. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0021] like Figures 1 to 3 As shown, a convenient handheld gas detection device includes a detector body 1 and a detection component 9. The detection component 9 is arranged on the top of the detector body 1. The detection component 9 includes an outer cover 901, an ultraviolet lamp chamber 902, a PID sensor 903, a signal line 904, an air pump 905 and a multi-section air pump pipe 906. The ultraviolet lamp chamber 902 is arranged inside the outer cover 901, and the PID sensor 903 is fixed inside the ultraviolet lamp chamber 902 through a bracket. The ultraviolet lamp chamber 902 ionizes organic molecules into positive and negative ions that can be detected by the PID sensor 903, and the PID sensor 903 converts the positive and negative charges of the ionized gas into current signals to measure the gas concentration. The bottom of the PID sensor 903 is externally connected to a signal line 904, and the signal line 904 is electrically connected to the built-in single-chip microcomputer of the detector body 1. The bottom of the ultraviolet lamp chamber 902 is provided with an air pump 905, and the top of the ultraviolet lamp chamber 902 is externally connected to a multi-section air pump 906. The multi-section exhaust pipe 906 is composed of a plurality of sleeves that are movably connected, and the exhaust pump 905 causes the ultraviolet lamp chamber 902 to form a negative pressure and draws the gas from the multi-section exhaust pipe 906 into the ionization chamber. By adding the exhaust pump 905, the ultraviolet lamp chamber 902 is formed with a negative pressure and draws the gas from the multi-section exhaust pipe 906 into the ionization chamber. The stable gas flow rate can effectively improve the stability of the photoionization sensor. The multi-section exhaust pipe 906 is composed of a plurality of sleeves that are movably connected, and can detect the gas deep in the structure that cannot be reached by human hands. When in use, the ultraviolet lamp chamber 902 ionizes the organic molecules into positive and negative ions that can be detected by the PID sensor 903. The PID sensor 903 further converts the positive and negative charges of the ionized gas into current signals to measure the gas concentration. After being processed by the built-in single-chip microcomputer of the detector body 1, the results are fed back to the display screen 2 on the upper front in real time.

[0022] like Figure 1 to Figure 2As shown, a display screen 2 is arranged on the upper front of the detector body 1, and an operation key 3 is arranged in the middle of the front of the detector body 1, a buzzer sounding hole 4 is arranged on the lower front of the detector body 1, and a charging port 5 is provided on the bottom plane of the detector body 1. A buzzer sounding hole 4 is also arranged on the bottom front of the detector body 1 of the present application, and an alarm will be sounded when the gas concentration exceeds the standard, and the user does not need to always pay attention to the numerical prompt of the display screen 2, which is more convenient to use. Anti-slip buckles 6 are symmetrically arranged on both sides of the detector body 1, and the inner wall of the anti-slip buckle 6 is provided with anti-slip grooves. An alligator back clip 7 is fixed with screws on the back of the detector body 1, and a hanging ring 8 is rotatably installed on the top of the alligator back clip 7. By arranging the alligator back clip 7 on the back of the detector body 1, it is convenient for the user to carry the TVOC gas detector on the belt. In addition, a hanging ring 8 is rotatably installed on the top of the crocodile back clip 7, providing more functional options for easy carrying.

[0023] Working principle: When using this convenient handheld gas detection device, by setting an alligator back clip 7 on the back of the detector body 1, it is convenient for the user to carry the TVOC gas detector on the belt. In addition, a hanging ring 8 is rotatably installed on the top of the alligator back clip 7, providing more functional options for easy carrying. By adding an air pump 905, a negative pressure is formed in the ultraviolet lamp chamber 902 and the gas is drawn into the ionization chamber through the multi-section air pump 906. The stable gas flow rate can effectively improve the stability of the photoionization sensor, wherein the multi-section air pump 906 is composed of multiple sections of movably connected sleeves, which can detect The gas is detected deep in the structure that cannot be reached by human hands. When in use, the ultraviolet lamp chamber 902 ionizes the organic molecules into positive and negative ions that can be detected by the PID sensor 903. The PID sensor 903 further converts the positive and negative charges of the ionized gas into current signals to measure the gas concentration. After processing by the built-in single-chip microcomputer of the detector body 1, the results are fed back to the display screen 2 on the upper front in real time. A buzzer sounding hole 4 is also provided at the bottom of the front side of the detector body 1 of the present application. When the gas concentration exceeds the standard, an alarm will be sounded. The user does not need to always pay attention to the numerical prompts on the display screen 2, which is more convenient to use.

[0024] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A handheld gas detection device, characterized in that: The invention comprises a detector body (1) and a detection component (9), wherein the detection component (9) is arranged on the top of the detector body (1), and the detection component (9) comprises an outer cover (901), an ultraviolet lamp chamber (902), a PID sensor (903), a signal line (904), an air pump (905) and a multi-section air pump pipe (906); the ultraviolet lamp chamber (902) is arranged inside the outer cover (901), and the PID sensor (903) is fixed inside the ultraviolet lamp chamber (902) through a bracket; the bottom of the PID sensor (903) is externally connected to a signal line (904), and the signal line (904) is electrically connected to a built-in single-chip computer of the detector body (1); the bottom of the ultraviolet lamp chamber (902) is arranged with an air pump (905), and the top of the ultraviolet lamp chamber (902) is externally connected to a multi-section air pump pipe (906).

2. A handheld gas detection device according to claim 1, characterized in that: The ultraviolet lamp chamber (902) ionizes organic molecules into positive and negative ions that can be detected by the PID sensor (903), and the PID sensor (903) converts the positive and negative charges of the ionized gas into current signals to achieve gas concentration measurement.

3. A handheld gas detection device according to claim 1, characterized in that: The multi-section exhaust pipe (906) is composed of multiple sections of movably connected sleeves, and the exhaust pump (905) creates a negative pressure in the ultraviolet lamp chamber (902) and draws gas from the multi-section exhaust pipe (906) into the ionization chamber.

4. A handheld gas detection device according to claim 1, characterized in that: A display screen (2) is arranged above the front of the detector body (1), and an operation key (3) is arranged in the middle of the front of the detector body (1).

5. A handheld gas detection device according to claim 1, characterized in that: A buzzer sounding hole (4) is provided at the lower front of the detector body (1), and a charging port (5) is provided on the bottom plane of the detector body (1).

6. A handheld gas detection device according to claim 1, characterized in that: Anti-skid buckles (6) are symmetrically provided on both sides of the detector body (1), and the inner walls of the anti-skid buckles (6) are provided with anti-skid grooves.

7. A handheld gas detection device according to claim 1, characterized in that: An alligator back clip (7) is screwed to the back of the detector body (1), and a hanging ring (8) is rotatably mounted on the top of the alligator back clip (7).

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