CN219777602U

CN219777602U - Handheld instrument with gas detection function

Info

Publication number: CN219777602U
Application number: CN202320362074.4U
Authority: CN
Inventors: 王英华; 王震
Original assignee: Shandong Sishi Safety Technology Co ltd
Current assignee: Shandong Sishi Safety Technology Co ltd
Priority date: 2023-03-02
Filing date: 2023-03-02
Publication date: 2023-09-29
Anticipated expiration: 2033-03-02

Abstract

The utility model relates to the technical field of gas detectors, and discloses a handheld instrument with a gas detection function, which comprises an instrument body, wherein a display and keys are arranged at the front end of the instrument body, a battery compartment is arranged at the rear end of the instrument body, a first cavity is formed in the upper end of the instrument body, a second cavity is formed in the instrument body, a cover plate is rotatably arranged at the upper end of the instrument body, and a positioning screw is arranged at the upper end of the cover plate in a threaded manner. This take gaseous hand-held type instrument of testing function sets up the apron that can overturn at the instrument top, and fixed through the locating screw, the mounting structure of intake pipe is hidden in the inside of apron, needs to open the apron earlier when changing the intake pipe, avoids the intake pipe to take place to loosen and takes place to take off, has improved stability, and the inside of instrument sets up the filter pulp, fixes through the filter plate, can adsorb the dust in the air, avoids too much dust to get into inside the instrument, contacts and influences gas sensor, has improved the accuracy of instrument.

Description

Handheld instrument with gas detection function

Technical Field

The utility model relates to the technical field of gas detectors, in particular to a handheld instrument with a gas detection function.

Background

The gas detector is an instrument for detecting gas leakage concentration, and comprises: portable gas detectors, hand-held gas detectors, stationary gas detectors, on-line gas detectors, etc., mainly utilize gas sensors to detect gas species present in the environment.

Most of the handheld instruments with gas detection functions at present are provided with an air inlet pipe, an air inlet pipe and an installation structure of the instruments, the air inlet pipe is located outside and fixed through threads, the air inlet pipe is easy to loose and take off after long-time use due to frequent contact with the outside, stability is poor, the instruments are not provided with a filtering mechanism, air directly enters the instruments, dust is accumulated on the surface of a gas sensor easily, and detection accuracy is affected.

Disclosure of Invention

(one) solving the technical problems

The utility model aims to provide a handheld instrument with a gas detection function, which aims to solve the problems that in the background technology, most handheld instruments with the gas detection function are provided, the mounting structure of an air inlet pipe and the instrument is positioned outside, and the air inlet pipe is easy to loosen and lower in stability after long-time use due to frequent contact with the outside through screw threads, and air directly enters the instrument without a filtering mechanism, so that dust is accumulated on the surface of a gas sensor easily to influence the detection accuracy.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a take gaseous hand-held type instrument of testing function, includes the instrument body, the front end of instrument body is provided with display and button, the rear end of instrument body is provided with the battery compartment, cavity one has been seted up to the upper end of instrument body, cavity two has been seted up to the inside of instrument body, the apron is installed in the upper end rotation of instrument body, the locating screw is installed to the upper end screw thread of apron, the inside fixed mounting of apron has fixed sleeve, fixed sleeve's inside cup joints installs the intake pipe, the outside fixed mounting of intake pipe lower extreme has the spacing ring, fixed sleeve's outside screw thread installs fastening sleeve, frame and filter pulp are installed in the inboard cup joint of cavity one, the inboard fixed mounting of frame has the filter plate, the inside fixed mounting of instrument body has aspiration pump and gas sensor.

Preferably, the key is located below the display, and the display, the key and the battery compartment are respectively electrically connected with the instrument body, and the handheld instrument is controlled through the key.

Preferably, the first cavity is located the upper end of the second cavity, the apron is located the outside of the first opening part of cavity, set screw is threaded connection with the instrument body, and the one end of apron can overturn along the upper end of instrument body, and when the apron was opened completely, the cavity was exposed, and after the apron was closed, the set screw was screwed and is fixed the apron.

Preferably, the fixed sleeve is located the central point of apron, stop collar and fixed sleeve's upper end, fastening sleeve and stop collar's lower extreme laminating, the intake pipe passes fixed sleeve from the downside, and the stop collar plays spacing effect to the intake pipe, again with fastening sleeve rotary mounting to fixed sleeve's outside, fix the bottom of stop collar, accomplish the installation of intake pipe.

Preferably, the outer frame is attached to the lower end of the cover plate, the filter plate is attached to the upper end of the filter cotton, the filter cotton is located at the upper end of the cavity II, the filter cotton is firstly placed in the cavity I, the outer frame is sleeved into the cavity I, the filter plate plays a role in positioning the filter cotton, and the filter cotton adsorbs dust in air.

Preferably, the air pump and the gas sensor extend to the inside of the second cavity, the air pump and the gas sensor are respectively electrically connected with the instrument body, the air pump sucks external air into the second cavity through the air inlet pipe, the gas sensor detects air in the second cavity, and the type of the gas sensor adopts MQ135.

Compared with the prior art, the utility model has the beneficial effects that: this take gaseous hand-held type instrument of testing function sets up the apron that can overturn at the instrument top, and fixed through the locating screw, the mounting structure of intake pipe is hidden in the inside of apron, needs to open the apron earlier when changing the intake pipe, avoids the intake pipe to take place to loosen and takes place to take off, has improved stability, and the inside of instrument sets up the filter pulp, fixes through the filter plate, can adsorb the dust in the air, avoids too much dust to get into inside the instrument, contacts and influences gas sensor, has improved the accuracy of instrument.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic elevational view of the present utility model;

FIG. 3 is a schematic view of the internal structure of the present utility model;

fig. 4 is an enlarged schematic view of the structure of fig. 3 a according to the present utility model.

Wherein: 1. an instrument body; 2. a display; 3. a key; 4. a battery compartment; 5. a first cavity; 6. a second cavity; 7. a cover plate; 8. positioning a screw; 9. a fixed sleeve; 10. an air inlet pipe; 11. a limiting ring; 12. a fastening sleeve; 13. an outer frame; 14. filtering cotton; 15. a filter plate; 16. an air extracting pump; 17. a gas sensor.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: the hand-held instrument with the gas detection function comprises an instrument body 1, wherein a display 2 and a key 3 are arranged at the front end of the instrument body 1, a battery compartment 4 is arranged at the rear end of the instrument body 1, the key 3 is positioned below the display 2, the key 3 and the battery compartment 4 are respectively electrically connected with the instrument body 1, a first cavity 5 is formed in the upper end of the instrument body 1, a second cavity 6 is formed in the interior of the instrument body 1, a cover plate 7 is rotatably arranged at the upper end of the instrument body 1, a positioning screw 8 is threadedly arranged at the upper end of the cover plate 7, the first cavity 5 is positioned at the upper end of the second cavity 6, the cover plate 7 is positioned at the outer side of an opening of the first cavity 5, the positioning screw 8 is in threaded connection with the instrument body 1, the hand-held instrument is controlled by the key 3, one end of the cover plate 7 can be overturned along the upper end of the instrument body 1, when the first cavity 5 is exposed and after the cover plate 7 is closed, the positioning screw 8 fixes the cover plate 7;

the inner part of the cover plate 7 is fixedly provided with a fixed sleeve 9, the inner part of the fixed sleeve 9 is sleeved with an air inlet pipe 10, the outer side of the lower end of the air inlet pipe 10 is fixedly provided with a limiting ring 11, the outer side of the fixed sleeve 9 is provided with a fastening sleeve 12 in a threaded manner, the fixed sleeve 9 is positioned at the central position of the cover plate 7, the limiting ring 11 is attached to the upper end of the fixed sleeve 9, the fastening sleeve 12 is attached to the lower end of the limiting ring 11, the air inlet pipe 10 penetrates through the fixed sleeve 9 from the lower side, the limiting ring 11 plays a limiting role on the air inlet pipe 10, the fastening sleeve 12 is rotatably arranged on the outer side of the fixed sleeve 9, the bottom of the limiting ring 11 is fixed, and the installation of the air inlet pipe 10 is completed;

the inner side of the first cavity 5 is sleeved with an outer frame 13 and filter cotton 14, the outer frame 13 is attached to the lower end of the cover plate 7, the filter plate 15 is attached to the upper end of the filter cotton 14, the filter cotton 14 is located at the upper end of the second cavity 6, the inner side of the outer frame 13 is fixedly provided with the filter plate 15, an air pump 16 and a gas sensor 17 are fixedly arranged in the instrument body 1, the air pump 16 and the gas sensor 17 extend to the inner side of the second cavity 6, the air pump 16 and the gas sensor 17 are respectively electrically connected with the instrument body 1, the filter cotton 14 is firstly placed in the first cavity 5, the outer frame 13 is sleeved into the first cavity 5, the filter plate 15 plays a role in positioning the filter cotton 14, dust in air is adsorbed by the filter cotton 14, the air is sucked into the second cavity 6 through the air inlet pipe 10 by the air pump 16, the air in the second cavity 6 is detected by the gas sensor 17, and the type of the air sensor 17 is MQ135.

Working principle: firstly, the positioning screw rod 8 is rotated and taken down, the cover plate 7 is turned upwards, the first cavity 5 is exposed, the filter cotton 14 is firstly put into the first cavity 5, the outer frame 13 is sleeved into the first cavity 5, the filter plate 15 plays a role in positioning the filter cotton 14, then the air inlet pipe 10 passes through the fixed sleeve 9 from the lower side, the limiting ring 11 plays a role in limiting the air inlet pipe 10, the fastening sleeve 12 is rotationally installed to the outer side of the fixed sleeve 9, the bottom of the limiting ring 11 is fixed, after the installation of the air inlet pipe 10 is completed, the cover plate 7 is turned over to the upper end of the instrument body 1, the cover plate 7 is fixed by screwing the positioning screw rod 8, finally, the battery is installed in the battery compartment 4, during use, the air pump 16 is started through the key 3, outside air is sucked into the second cavity 6 through the air inlet pipe 10, the air sensor 17 detects air in the second cavity 6, dust in the air is adsorbed by the filter cotton 14 when the air passes through the first cavity 5, the air sensor 17 can be effectively prevented from being influenced by excessive dust, and the accuracy of the instrument is improved.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a take gaseous detection function's handheld instrument, includes instrument body (1), its characterized in that: the utility model discloses a gas sensor, including instrument body (1), air inlet pipe (10) are installed to the inside fixed mounting of apron (7), display (2) and button (3) are provided with the front end of instrument body (1), battery compartment (4) are provided with the rear end of instrument body (1), cavity one (5) are seted up to the upper end of instrument body (1), cavity two (6) are seted up to the inside of instrument body (1), apron (7) are installed in the upper end rotation of instrument body (1), positioning screw (8) are installed to the upper end screw thread of apron (7), the inside fixed mounting of apron (7) has fixed sleeve (9), the inside of fixed sleeve (9) has cup jointed and has installed intake pipe (10), the outside fixed mounting of intake pipe (10) lower extreme has spacing ring (11), the outside screw thread of fixed sleeve (9) installs fastening sleeve (12), the inboard of cavity one (5) cup joints and installs frame (13) and filter media (14), the inboard fixed mounting of frame (13) has filter plate (15), the inside fixed mounting of apron (1) has aspiration pump (16) gas sensor (17).

2. A hand-held instrument with gas detection function according to claim 1, wherein: the button (3) is located below the display (2), and the display (2), the button (3) and the battery compartment (4) are respectively electrically connected with the instrument body (1).

3. A hand-held instrument with gas detection function according to claim 1, wherein: the first cavity (5) is located at the upper end of the second cavity (6), the cover plate (7) is located at the outer side of the opening of the first cavity (5), and the positioning screw (8) is in threaded connection with the instrument body (1).

4. A hand-held instrument with gas detection function according to claim 1, wherein: the fixing sleeve (9) is located at the center of the cover plate (7), the limiting ring (11) is attached to the upper end of the fixing sleeve (9), and the fastening sleeve (12) is attached to the lower end of the limiting ring (11).

5. A hand-held instrument with gas detection function according to claim 1, wherein: the outer frame (13) is attached to the lower end of the cover plate (7), the filter plate (15) is attached to the upper end of the filter cotton (14), and the filter cotton (14) is located at the upper end of the cavity II (6).

6. A hand-held instrument with gas detection function according to claim 1, wherein: the air pump (16) and the gas sensor (17) extend to the inside of the cavity II (6), and the air pump (16) and the gas sensor (17) are respectively electrically connected with the instrument body (1).