CN217277793U

CN217277793U - Hand-held type formaldehyde detection device

Info

Publication number: CN217277793U
Application number: CN202220055699.1U
Authority: CN
Inventors: 徐杰
Original assignee: Jiangsu Huoxun Information Technology Co ltd
Current assignee: Jiangsu Huoxun Information Technology Co ltd
Priority date: 2022-01-08
Filing date: 2022-01-08
Publication date: 2022-08-23
Anticipated expiration: 2032-01-08

Abstract

The utility model discloses a hand-held type formaldehyde detection device belongs to formaldehyde and detects technical field, including the casing and inside controller of casing and detection sensor, the front installation display screen and the operation button of casing, it installs to detect the sensor and inlay detection room in the casing, the intake pipe is connected through the air exhauster to the inlet end that detects the room, the air exhauster is by on-off control, the gas outlet is connected to the end of giving vent to anger that detects the room, demountable installation has the extension pipe in the intake pipe. Make this detection device's department of admitting air can prolong through the extension pipe of detachable connection in with the intake pipe, be fit for stretching into narrow and small space and detect, use more humanized, detect the air inlet end of room and still connect switch control's air exhauster in addition, when the switch was not opened, the room that detects admits air passively, opens the usable air exhauster multiplicable air input of back, makes testing result more accurate.

Description

Hand-held type formaldehyde detection device

Technical Field

The utility model relates to a formaldehyde detects technical field, in particular to hand-held type formaldehyde detection device.

Background

The formaldehyde detector realizes the on-site quick semi-quantitative realization of formaldehyde in indoor air, and has the advantages of simple characteristic structure, small volume, convenient carrying and use and intuition. The method can be widely applied to the field quantitative and qualitative detection of formaldehyde in air of rooms, residential areas, public places, living places and factories and mining workshops. The formaldehyde detection instrument adopts a high-sensitivity electrochemical sensor principle, combines a single chip microcomputer technology and a network communication technology to collect air samples in a detection place, formaldehyde in the air is absorbed by a phenol reagent solution and reacts to generate the oxazine, and the oxazine is oxidized by a color developing agent ferric ion in an acid solution to form a blue-green compound. And according to the shade of the color, performing direct colorimetric determination on the spot.

Traditional formaldehyde detector is for carrying, sets up to be hand-held type usually, is convenient for use like this, but hand-held type formaldehyde detector's air inlet is shorter, is difficult for stretching into narrow and small space and detects, receives the scene restriction extensive inadequately when leading to the application, and formaldehyde detector carries out the measuring through gathering the air moreover, and the gas outlet is blockked up very easily in the place that the dust is more, leads to gas outgoing not smooth and easy, influences measurement accuracy and fragile detection sensor.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aim at just using not extensively enough in order to solve above-mentioned hand-held type formaldehyde detector, damage the problem of sensor easily and provide a hand-held type formaldehyde detection device in the more environment of dust, have the increase and can dismantle the extension pipe and can stretch into narrow and small space and detect, application scope is wide, and the detection room sets up protection casing and dust screen, protects the advantage that detects the sensor.

The utility model discloses a following technical scheme realizes above-mentioned mesh, a hand-held type formaldehyde detection device, including the casing and the inside controller of casing and detection sensor, the front installation display screen and the operation button of casing, it installs and inlays to detect the sensor detection room in the casing, the air inlet end that detects the room passes through the air exhauster and connects the intake pipe, the air exhauster is by on-off control, the gas outlet is connected to the end of giving vent to anger that detects the room, demountable installation has the extension pipe in the intake pipe.

Preferably, the inner wall of the detection chamber is detachably provided with a protective cover, and a dustproof net is arranged at the position, close to the air outlet end of the detection chamber, of the protective cover.

Preferably, an access cover is installed at a position corresponding to the detection chamber on the back surface of the housing, and a switch is further installed on the back surface of the housing.

Preferably, the extension pipe comprises an air hose and a metal hose sleeved on the outer wall of the air hose.

Preferably, an air inlet head is installed at the top of the metal hose, the air inlet head is communicated with the ventilation hose, and a plurality of air inlets are formed in the outer wall of the air inlet head.

Preferably, threaded connection between extension pipe and the casing, the top of casing set up the connector with intake pipe line connection, and the bottom of extension pipe sets up threaded joint.

Compared with the prior art, the beneficial effects of the utility model are that:

1. make this detection device's department of admitting air can prolong through the extension pipe of detachable connection in with the intake pipe, be fit for stretching into narrow and small space and detect, use more humanized, detect the air inlet end of room and still connect switch control's air exhauster in addition, when the switch was not opened, the room that detects admits air passively, opens the usable air exhauster multiplicable air input of back, makes testing result more accurate.

2. The detection chamber is provided with the protection cover for intercepting massive dust to avoid damaging the detection sensor, the protection cover is arranged at a position close to the air outlet end of the detection chamber and is provided with the dust screen, fine dust can be intercepted to avoid blocking the air outlet, the back of the shell is provided with the access cover, and the access cover can be opened to clean the dust screen.

Drawings

Fig. 1 is the front structure schematic diagram of the formaldehyde detecting device of the present invention.

Fig. 2 is the back structure schematic diagram of the formaldehyde detecting device of the present invention.

Fig. 3 is a schematic view of the internal structure of the housing of the present invention.

Fig. 4 is a schematic view of the structure of the extension pipe of the present invention.

In the figure: 1. the device comprises a shell, 2, a display screen, 3, an operation key, 4, an air outlet, 5, an extension pipe, 6, an access cover, 7, a switch, 8, an exhaust fan, 9, an air inlet pipe, 10, a connector, 11, a detection chamber, 12, a protective cover, 13, a dust screen, 14, a detection sensor, 15, a controller, 16, a metal hose, 17, an air inlet hole, 18, an air inlet head, 19, a ventilation hose, 20 and a threaded connector.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, a hand-held formaldehyde detecting device comprises a housing 1, and a controller 15 and a detecting sensor 14 inside the housing 1, wherein a display screen 2 and an operation button 3 are installed on the front surface of the housing 1, the detecting sensor 14 can collect a formaldehyde content signal by using photoelectric detection, and is finally displayed by the display screen 2 by using the calculation of the controller 15, the detecting sensor 14 is installed in a detecting chamber 11 embedded in the housing 1, an air inlet end of the detecting chamber 11 is connected with an air inlet pipe 9 by an exhaust fan 8, the exhaust fan 8 is controlled by a switch 7, an air outlet end of the detecting chamber 11 is connected with an air outlet 4, an extension pipe 5 is detachably installed on the air inlet pipe 9, when the detecting sensor 14 measures the formaldehyde content in gas, external air enters the detecting chamber 11 through the air inlet pipe 9 and is then discharged from the air outlet 4, the detecting sensor 14 is installed in the detecting chamber 11 so that the air can contact the detecting sensor 14, the air exhauster 8 can increase the flow of the air inlet pipe 9, the detection precision is improved, the extension pipe 5 is used for prolonging the length of the air inlet pipe 9, the extension pipe 5 adopts a detachable installation mode, and can be detached when not in use, so that the use by a user is convenient.

As shown in fig. 3, inner wall demountable installation of detection room 11 has protection casing 12, protection casing 12 sets up dust screen 13 near the position that detection room 11 gave vent to anger the end, protection casing 12 is used for protecting detection sensor 14 in the detection room 11, protection casing 12 can intercept bulky impurity and avoid colliding detection sensor 14 and lead to its damage, dust screen 13 is used for isolated little dust and avoids getting into gas outlet 4, prevent gas outlet 4 jam effectively, as shown in fig. 2, access cover 6 is installed with the position that detection room 11 corresponds to the back of casing 1, switch 7 is still installed at the back of casing 1, can take out protection casing 12 after access cover 6 opens, thereby be convenient for clear up dust screen 13, make things convenient for the later maintenance of the device.

As shown in fig. 4, extension pipe 5 includes air hose 19 and cup joints the metal collapsible tube 16 that cup joints at air hose 19 outer wall, extension pipe 5's metal collapsible tube 16 can conveniently bend the design, make the one end of admitting air can be accurate facing to the region of awaiting measuring, air inlet head 18 is installed at metal collapsible tube 16's top, air inlet head 18 and air collapsible tube 19 intercommunication, and air inlet head 18's outer wall sets up a plurality of inlet port 17, the air of equidirectional not can be inhaled to a plurality of inlet port 17 of air inlet head 18, make the sampling possess more scientifically, threaded connection between extension pipe 5 and the casing 1, the top of casing 1 sets up the connector 10 with intake pipe 9 pipe connection, extension pipe 5's bottom sets up threaded connection 20, extension pipe 5 adopts threaded connection's mode, and the user of being convenient for operates and uses.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a hand-held type formaldehyde detection device, include casing (1) and inside controller (15) of casing (1) and detection sensor (14), openly installation display screen (2) and operation button (3) of casing (1), its characterized in that, it installs and inlays to detect sensor (14) detection room (11) in casing (1), intake pipe (9) are connected through air exhauster (8) to the inlet end that detects room (11), air exhauster (8) are controlled by switch (7), gas outlet (4) are connected to the end of giving vent to anger that detects room (11), demountable installation has extension pipe (5) on intake pipe (9).

2. The hand-held formaldehyde detection device according to claim 1, wherein a protective cover (12) is detachably mounted on the inner wall of the detection chamber (11), and a dust screen (13) is arranged at a position of the protective cover (12) close to the air outlet end of the detection chamber (11).

3. The hand-held formaldehyde detecting device according to claim 2, wherein an access cover (6) is installed on the back of the housing (1) at a position corresponding to the detecting chamber (11), and a switch (7) is also installed on the back of the housing (1).

4. The hand-held formaldehyde detecting device according to claim 1, wherein the extension tube (5) comprises an air hose (19) and a metal hose (16) sleeved on the outer wall of the air hose (19).

5. The hand-held formaldehyde detection device according to claim 4, wherein an air inlet head (18) is installed at the top of the metal hose (16), the air inlet head (18) is communicated with an air hose (19), and a plurality of air inlet holes (17) are formed in the outer wall of the air inlet head (18).

6. The hand-held formaldehyde detecting device according to claim 1, wherein the extension pipe (5) is in threaded connection with the housing (1), the top end of the housing (1) is provided with a connector (10) connected with the air inlet pipe (9) through a pipeline, and the bottom end of the extension pipe (5) is provided with a threaded connector (20).