CN214749742U - Formaldehyde sampling detection device - Google Patents

Abstract

The utility model relates to a formaldehyde sampling detection device for sampling to the air when testing formaldehyde content, which comprises a carriage body, the gas collection subassembly is installed to the automobile body, the gas collection subassembly includes the gas washing bottle, the gas collection subassembly is connected with the subassembly of bleeding, the subassembly of bleeding includes the air pump, the automobile body rotationally is connected with the graduated disk, graduated disk detachably installs a plurality ofly the gas washing bottle, the gas washing bottle can follow the graduated disk rotates, the output of air pump has the ductility, works as the output of gas washing bottle rotates to just to the time with the output of air pump, the output of air pump adjustable extremely with the output of gas washing bottle is connected. This application carries on other devices with the automobile body and gets into the sampling point, starts the air pump and inhales gas washing bottle with the air, and the back is accomplished in the sampling, closes the air pump, and the control automobile body reachs next sampling point, rotates the gas washing bottle that switches and the air pump butt joint through the graduated disk, starts the air pump once more to this realizes automatic multiple spot sampling.

Description

Formaldehyde sampling detection device

Technical Field

The application relates to the technical field of indoor formaldehyde sampling detection, in particular to a formaldehyde sampling detection device.

Background

With the enhancement of environmental awareness and the emphasis on health, people pay more attention to volatile harmful gases in interior decoration and the like. Formaldehyde, which accounts for a large proportion of harmful gases, is also the subject of detection and cleaning. After the engineering construction is finished, the formaldehyde in the construction needs to be sampled and detected.

In the detection of formaldehyde, a spectrophotometry method is mostly adopted, and the content of formaldehyde is determined by comparing the luminosity of a reagent and an original reagent which pass through a sampling gas and react with a color developing agent respectively in an experimental instrument.

The publication number CN112285299A discloses a new-type environmental protection building material formaldehyde check out test set, including main shell subassembly, back drive assembly, preceding steering assembly, formaldehyde detection assembly, main shell subassembly includes drain pan, upper cover, formaldehyde detection assembly includes the formaldehyde detector, formaldehyde detection assembly group formaldehyde detector fixed mounting in the formaldehyde detection assembly is in the upper cover top.

This equipment has integrateed the formaldehyde and has detected the assembly, but by standard detection flow known, need artifical the participation in adding the partial process of developer and luminosity contrast, obviously, this equipment needs the staff to follow portable platform and carry on the formaldehyde and detect the assembly and get into indoorly, accomplishes whole testing process. According to the relevant national detection standard, 3-5 sampling points are needed to sample the space within 50-100 square meters, and at least 5 sampling points are needed to sample the space more than 100 square meters. A plurality of sampling points need luminance contrast many times promptly, and the sampling of a sampling point can only be accomplished to this equipment once only, so need the staff to follow the back that gets into, takes a long time to accomplish the sampling contrast of a plurality of points, has increased the time that the staff exposes in harmful gas, is unfavorable for staff's health.

Disclosure of Invention

The formaldehyde sampling detection device is used for matching with a spectrophotometry method to complete high-precision detection of indoor formaldehyde content.

The utility model provides a formaldehyde sampling detection device, includes the automobile body, the gas collection subassembly is installed to the automobile body, the gas collection subassembly includes the gas washing bottle that is used for collecting gas, the gas collection subassembly is connected with the subassembly of bleeding, the subassembly of bleeding includes the air pump, the automobile body rotationally is connected with the graduated disk, graduated disk detachably installs a plurality ofly the gas washing bottle, the gas washing bottle can follow the graduated disk rotates, the output of air pump has the ductility, works as the output of gas washing bottle rotates to when just to the time with the output of air pump, the output of air pump adjustable to with the output of gas washing bottle is connected.

Through adopting above-mentioned technical scheme, carry on the graduated disk that can rotate on the automobile body. When using spectrophotometry to carry out formaldehyde content detection and need gather air sample, the laboratory technician can install a plurality of gas collection subassemblies respectively on the graduated disk, then control the automobile body outdoors and get into indoorly, and the automobile body is gone up to carry and is had the subassembly of bleeding, controls the automobile body when the laboratory technician and removes to the sampling point after, closes the air pump after accomplishing the sampling with gaseous suction gas bottle through controlling the air pump. And then the vehicle body is controlled to move to the next sampling point, the index plate is controlled to rotate by a certain angle, the next gas washing bottle is rotated to the output end of the gas pump, and then the gas pump is controlled to start again to finish sampling of the second point. By analogy, after sampling of multiple points is completed, the experimenter controls the vehicle body to bring back the sample, and other experimental processes such as subsequent luminosity comparison are carried out. In foretell scheme, do not need the laboratory technician to get into the space that probably has harmful gas, can accomplish the sampling, reduce the harm healthy to the laboratory technician, simultaneously, through the setting of rotationally graduated disk, make one bleed subassembly can dock a plurality of gas collection subassemblies, once come and go the point sampling work that can accomplish a plurality of sampling points, simplified the working process.

Optionally, the gas washing bottle is provided with a bottle plug for sealing the gas washing bottle, an air inlet pipe and an exhaust pipe are installed on the bottle plug, a one-way valve is installed on the exhaust pipe, and a pressure release valve is installed on the air inlet pipe.

By adopting the technical scheme, the gas collected in the spectrophotometry needs to pass through the absorption liquid consisting of distilled water and a phenol reagent, and formaldehyde in the air reacts with the absorption liquid. The gas washing bottle is used for containing absorption liquid, receives gas sucked by the gas pumping assembly through the gas inlet pipe, and discharges the gas through the exhaust pipe after the gas passes through the absorption liquid. The exhaust pipe is provided with the one-way valve, so that gas in the exhaust pipe can only flow in one way, namely can only be discharged from the gas washing bottle, and external air cannot enter the gas washing bottle through the exhaust pipe, so that the pollution of external air to reagents in the gas washing bottle is reduced. At intake pipe installation relief valve, the relief valve just can switch on when only gas pressure reaches the certain degree, when the intake pipe with bleed the subassembly butt joint, the subassembly of bleeding is greater than atmospheric pressure to the gaseous atmospheric pressure of intake pipe input, the relief valve switches on, gaseous entering gas washing bottle, when the intake pipe did not dock with the subassembly of bleeding, relief valve department pressure is atmospheric pressure, the relief valve does not switch on, outside air can't pass through the intake pipe, reduce the pollution of outside air to the reagent in the gas washing bottle.

Optionally, the output end of the air pump is fixedly connected with a telescopic pipe, the vehicle body is fixedly connected with an electric push rod, one end of the telescopic pipe, far away from the air pump, is fixedly connected with the output end of the electric push rod, and the electric push rod can push the telescopic pipe to be connected with the air inlet pipe.

Through adopting above-mentioned technical scheme, when needs sampling, the electric push rod drives flexible pipe extension, and the intake pipe is laminated, accomplishes gas transport, and when the sampling was accomplished, the electric push rod drives flexible pipe shrink, keeps away from the intake pipe, makes the graduated disk rotate and switches a set of gas collection subassembly next, and the automobile body moves to next sampling point, continues to accomplish the sampling.

Optionally, one end of the air inlet pipe, which is far away from the gas washing bottle, is provided with a conical air inlet, the output end of the air pumping assembly is provided with a conical air outlet, and the outer side wall of the conical air outlet can be attached to the inner side wall of the conical air inlet.

Through adopting above-mentioned technical scheme, the inside wall of toper gas inlet is laminated to toper gas vent lateral wall, reveal when can reducing gas transmission. When the conical exhaust port is in butt joint with the conical air inlet, the small-diameter port of the conical exhaust port is in butt joint with the large-diameter port of the conical air inlet, and the side wall of the cone is an inclined plane, so that even if the conical exhaust port is not coaxial with the conical air inlet in butt joint, automatic calibration can be completed through the inclined plane.

Optionally, the input fixedly connected with hose of air pump, the automobile body rotationally is connected with the threaded rod, automobile body fixedly connected with guide rod group, the threaded rod rotationally is connected with slider 24, slider 24 can install in with sliding in guide rod group, the hose keep away from the one end of air pump with slider 24 fixed connection.

By adopting the technical scheme, the threaded rod rotates to drive the sliding block 24 to lift, the sliding block 24 drives the hose to lift together, and air sampling with sampling points at different heights between 0.5 meter and 1.5 meter in the relevant standard can be completed.

Optionally, the dividing plate is fixedly connected with a cover plate, and the lower end face of the cover plate is attached to the upper end face of the dividing plate.

Through adopting above-mentioned technical scheme, after the gas collection subassembly is installed in the index hole, cover the apron, fixed gas collection subassembly that can be better reduces the shake of gas collection subassembly when the automobile body is marchd, reduces the risk that the part in the gas collection subassembly is collided with and damages, increases life.

Optionally, the lower terminal surface of apron has seted up the standing groove, go up the standing groove with the lateral wall laminating of toper air inlet, the last terminal surface of graduated disk has seted up down the standing groove, down the standing groove with the lateral wall laminating of toper air inlet.

Through adopting above-mentioned technical scheme, after covering the apron, intake pipe and toper air inlet are blocked in the space that upper and lower placing groove formed of apron and graduated disk, when toper gas vent and toper air inlet butt joint, the toper gas vent compels the toper air inlet under the promotion of flexible pipe, the lateral wall of the lateral wall atress laminating standing groove of toper air inlet, the standing groove can provide a support for it, make the two laminating inseparabler, more be favorable to the sealing of gas transmission route, improve gas transmission efficiency.

The automobile body includes the wheel, the wheel is provided with a plurality of, every the wheel is by independent driving motor drive.

By adopting the technical scheme, each wheel is driven by the independent motor, and the speeds of the wheels driven by the motors on different sides are different, so that the speeds on two sides of the vehicle body are different, and the turning or turning function of the vehicle body can be realized. Compared with a turning mechanism, the scheme has the advantages of simple structure, smaller turning radius and suitability for places with smaller space.

In summary, the present application includes at least one of the following beneficial technical effects:

1. automatic control can be realized by controlling the wheel motor, the indexing motor, the lifting motor and the air pump, and workers do not need to enter a harmful gas environment for sampling;

2. due to the arrangement of the dividing disc, a plurality of gas collecting assemblies are integrated on one platform, and one-time multipoint sampling can be completed.

Drawings

FIG. 1 is a schematic view of the overall structure of an embodiment of the formaldehyde sampling and detecting device of the present application.

Fig. 2 is a schematic structural diagram of an indexing assembly of an embodiment of the formaldehyde sampling and detecting device according to the present application.

Fig. 3 is a schematic structural diagram of a gas collecting assembly of an embodiment of the formaldehyde sampling and detecting device.

FIG. 4 is a schematic structural diagram of an air exhaust assembly of an embodiment of the formaldehyde sampling and detecting device.

FIG. 5 is a schematic structural diagram of a cover plate and upper and lower placement tanks according to an embodiment of the formaldehyde sampling and detecting device.

FIG. 6 is a schematic structural diagram of a lifting assembly of an embodiment of the formaldehyde sampling and detecting device.

In the figure, 1, a vehicle body; 11. a housing; 12. a wheel;

2. a lifting assembly; 21. a lifting motor; 22. a threaded rod; 23. a guide rod group; 231. a fixing plate; 232. a support bar; 24. a slider;

3. an index plate; 31. indexing holes; 32. placing the tank down;

4. indexing the base; 41. a carrier; 42. a pillar; 43. a flat bearing;

5. a gas collection assembly; 51. a gas washing bottle; 52. an exhaust pipe; 521. a one-way valve; 53. an air inlet pipe; 531. a pressure relief valve; 532. a conical air inlet; 54. a bottle stopper;

6. a drive shaft; 61. indexing speed reducers; 62. an indexing motor;

7. a cover plate; 71. an upper placing groove;

8. an air extraction assembly; 81. an air pump; 82. a hose; 83. a telescopic pipe; 831. a conical exhaust port; 84. an electric push rod; 85. and (4) a bracket.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

Referring to fig. 1, for the formaldehyde sampling detection device that this application discloses, including automobile body 1, automobile body 1 is including the casing 11 that is the box structure, and the chamber is placed to 11 inside formations of casing, and the bottom surface in the chamber of placing of casing 11 rotationally is connected with graduated disk 3, and 3 fixedly connected with a plurality of gas collection subassembly 5 of graduated disk, the bottom surface fixedly connected with in the chamber of placing of casing 11 bleed subassembly 8, and the output of the subassembly 8 of bleeding can be connected with the input of gas collection subassembly 5. The input end of the air exhaust component 8 is movably connected with a lifting component 2, and the lifting component 2 is fixedly connected with the upper surface of the shell 11. When the sampling needs, the laboratory technician gets into indoor work area through controlling automobile body 1 outdoors, reaches appointed sampling point, and lifting unit 2 that automobile body 1 carried promotes the output of subassembly 8 that bleeds to appointed height, starts subassembly 8 that bleeds and inhales gas collection subassembly 5 with gas. The spectrophotometry needs multi-point sampling, when the sampling of a sampling point is completed, the air exhaust assembly 8 is closed, and the laboratory technician controls the index plate 3 to rotate by a fixed angle, so that the next group of air collection assemblies 5 rotates to the position in butt joint with the output end of the air exhaust assembly 8, and the air exhaust assembly 8 is restarted to complete the sampling. By analogy, after sampling of more points is completed, the experimenter controls the vehicle body to return, and after the sample is taken, other experimental steps such as subsequent luminosity contrast test are carried out.

The lower end surface of the shell 11 is rotatably connected with wheels 12, the number of the wheels 12 is 6, every 3 wheels 12 are uniformly distributed on two sides of the lower end surface of the shell 11, and each wheel 12 is driven by an independent driving motor. The independent driving motor can utilize the vehicle body 1 to rotate at different directions or different speeds on the wheels 12 at the two sides, and the turning or turning is completed in situ, so that the action of the vehicle body 1 is more flexible.

Referring to fig. 2, an indexing base 4 is fixedly connected to a bottom surface of the placing cavity of the housing 11, the indexing base 4 includes a carrier 41, the carrier 41 is a cylindrical cavity with an open upper end, the lower end surface of the carrier 41 is welded with cylindrical pillars 42, three pillars 42 are selected, the three pillars 42 are uniformly arranged on the lower end surface of the carrier 41 in a circumferential manner, and an end surface of the pillar 42 away from the carrier 41 is fixedly connected to the bottom surface of the placing cavity of the housing 11 in a manner including but not limited to welding. The upper end face of the carrier 41 is fixedly connected with a plane bearing 43, and the upper end face of the plane bearing 43 is fixedly connected with the lower end face of the dividing plate 3. The graduated disk 3 is upper end open-ended cylindrical cavity, and a plurality of index holes 31 have been seted up to the inside bottom surface of graduated disk 3, and index hole 31 evenly is circumference arrangement terminal surface under 3 in the graduated disk, all installs a set of gas collection subassembly 5 in every index hole 31. The index plate 3 is fixedly connected with a transmission shaft 6 which is coaxial with the index plate 3, a through hole which is coaxial with the carrier 41 is formed in the lower end face of the carrier 41, the transmission shaft 6 penetrates through the through hole of the carrier 41, and the lower end of the transmission shaft 6 is connected with an index motor 62 through an index speed reducer 61. The transmission shaft 6 can be driven to rotate by the indexing motor 62, and the transmission shaft 6 drives the index plate 3 to rotate, so that the rotation of the gas collection assembly 5 in the indexing hole 31 is changed.

Referring to fig. 3, the gas collecting assembly 5 includes a gas washing bottle 51, a detachable bottle plug 54 is installed at a bottle opening of the gas washing bottle 51, the bottle plug 54 is used for sealing the gas washing bottle 51, two through holes are opened on an end surface of the bottle plug 54, an exhaust pipe 52 and an intake pipe 53 are fixedly connected to the bottle plug 54, the exhaust pipe 52 and the intake pipe 53 respectively penetrate through the two through holes of the bottle plug 54, a pressure release valve 531 is installed at one section of the intake pipe 53 which is located outside the gas washing bottle 51, and a one-way valve 521 is installed at one section of the exhaust pipe 52 which is located outside the gas washing bottle 51. Before sampling, a reagent reacting with gas is loaded into the gas washing bottle 51, in order to fully react air and the reagent, the port of the air inlet pipe 53 in the gas washing bottle 51 is positioned below the liquid level of the reagent and close to the bottom of the gas washing bottle 51, and in order to more conveniently discharge the reacted gas, the port of the air outlet pipe 52 in the gas washing bottle 51 is positioned above the liquid level of the reagent and close to the bottom of the bottle stopper 54. The one-way valve 521 is in one-way conduction, so that the gas in the exhaust pipe 52 can only flow in one direction, namely can only be exhausted from the gas washing bottle 51, and the outside air cannot enter the gas washing bottle 51 through the exhaust pipe 52, thereby reducing the pollution of the outside air to the reagent in the gas washing bottle 51. The relief valve 531 only can be conducted when the gas pressure reaches a certain degree, when the air inlet pipe 53 is in butt joint with the air pumping assembly 8, the air pressure of the air input into the air inlet pipe 53 by the air pumping assembly 8 is greater than the atmospheric pressure, the relief valve 531 is conducted, the gas enters the gas washing bottle 51, when the air inlet pipe 53 is not in butt joint with the air pumping assembly 8, the pressure at the position of the relief valve 531 is the atmospheric pressure, the relief valve 531 is not conducted, the external air cannot pass through the air inlet pipe 53, and the pollution of the external air to the reagent in the gas washing bottle 51 is reduced.

Referring to fig. 4, the air pumping assembly 8 includes an air pump 81, the air pump 81 is fixedly connected to the bottom surface of the placing cavity of the housing 11, an output end of the air pump 81 is fixedly connected to an extension tube 83, and an input end of the air pump 81 is fixedly connected to a hose 82. The bottom surface of the placing cavity of the shell 11 is welded with a support, the upper end of the support is fixedly connected with an electric push rod 84 through a bolt, and the output end of the electric push rod 84 is fixedly connected with one end of the telescopic pipe 83 far away from the air pump 81. The electric push rod 84 drives the extension tube 83 to extend and then be in butt joint with the air inlet pipe 53, when the sampling area needs to be changed and the air collecting assembly 5 needs to be switched, the electric push rod 84 drives the extension tube 83 to retract, and after the switching of the air collecting assembly 5 is completed, the electric push rod 84 drives the extension tube 83 to extend and be in butt joint with the air inlet pipe 53 again.

Referring to fig. 4, in order to facilitate the connection between the extension tube 83 and the air inlet tube 53, a tapered air outlet 831 is provided at an end of the extension tube 83 close to the electric push rod 84, and a tapered air inlet 532 is provided at an end of the air inlet tube 53 connected to the extension tube 83. The tapered air outlet 831 and the tapered air inlet 532 are funnel-shaped, after the telescopic pipe 83 extends, the tapered air outlet 831 is pushed to be in butt joint with the tapered air inlet 532, and the outer side wall of the tapered air outlet 831 is attached to the inner side wall of the tapered air inlet 532.

Referring to fig. 5, a cover plate 7 is installed at the upper end of the index plate 3, the cover plate 7 is a cylindrical cavity with an open lower end face, the lower end face of the cover plate 7 is attached to the upper end face of the index plate 3, a through hole is formed in the center of the cover plate 7, a threaded hole is formed in the upper end of the transmission shaft 6, and the cover plate 7 is fixedly connected with the transmission shaft 6 through a bolt penetrating through the through hole of the cover plate 7. An upper placing groove 71 used for placing an air inlet pipe 53 is formed in the position, corresponding to the air inlet, of the lower end of the cover plate 7, a lower placing groove 32 used for placing the air inlet pipe 53 is formed in the position, corresponding to the air inlet, of the upper end of the dividing plate 3, after the cover plate 7 and the dividing plate 3 are combined, the inner walls of the upper placing groove 71 and the lower placing groove 32 are attached to the outer side wall of the air inlet pipe 53 in a fitting mode, the air inlet pipe and the conical air inlet are clamped in a space formed by the placing grooves of the cover plate 7 and the dividing plate 3, when the conical air outlet 831 is in butt joint with the conical air inlet 532, the conical air outlet 831 is pushed by the telescopic pipe 83 to press the conical air inlet 532, the outer side wall of the conical air inlet 532 is in stress attachment to the side walls of the upper placing groove 71 and the lower placing groove 32, a support can be provided by the upper placing groove 71 and the lower placing groove 32, so that the conical air outlet 831 is attached to the conical air inlet 532 more tightly, and the sealing of the conical air inlet 532 is more favorable for the sealing of a gas transmission path, the gas transmission efficiency is improved.

Referring to fig. 6, the height of the sampled air should be adapted to the height of the human respiratory tract, and should be sampled between 0.5 m and 1.5 m, according to the relevant standards. The stroke of the lifting assembly 2 is set to 1 meter starting from 0.5 meter from the ground. The lifting component 2 comprises a lifting motor 21, and a threaded rod 22 is fixedly connected to the output end of the lifting motor 21. A through hole is formed in the upper end surface of the housing 11, and the threaded rod 22 penetrates through the through hole. The last fixed surface of casing 11 is connected with guide bar group 23, and guide bar group 23 includes bracing piece 232, and bracing piece 232 selects two, and two bracing pieces 232 distribute in threaded rod 22 both sides, and the equal fixedly connected with in both ends of bracing piece 232 is used for connecting the fixed plate 231 of two bracing pieces 232, and the fixed plate 231 middle part is provided with the through hole that runs through the terminal surface, and threaded rod 22 runs through this through hole. The threaded rod 22 is rotatably connected with a sliding block 24, the sliding block 24 is slidably connected with the supporting rod 232, and one end of the hose 82 far away from the air pump 81 is fixedly connected with the sliding block 24. The lifting motor 21 rotates to enable the threaded rod 22 to rotate, the sliding block 24 is lifted through the threads, and therefore the hose 82 is driven to lift, and air sampling at different heights is completed.

The driving parts such as the driving motor of wheel 12, air pump 81, elevator motor 21, graduated disk 3 mentioned in this application all can remote control, and control methods such as optional singlechip or PLC are accomplished, for the position, the gesture and the route of marcing of more making things convenient for observation device, do and improve the convenience that the automobile body was controlled through modes such as carrying on camera or radar location.

The implementation principle of the embodiment is as follows: when formaldehyde detection is required indoors, a laboratory technician fills a proper amount of prepared absorption liquid into the gas washing bottle 51, seals the gas washing bottle 51 by using a bottle plug 54 with an air inlet pipe 53 and an air outlet pipe 52, installs the gas washing bottle 51 into the indexing hole 31, places the air inlet pipe 53 and the conical air inlet 532 into the lower placement groove 32 on the indexing disc 3, aligns the upper placement groove 71 of the cover plate 7 with the lower placement groove 32 of the indexing disc 3, covers the cover plate 7 and fastens the cover plate 7 by using bolts. An operator controls the vehicle body 1 outdoors to enter the room, and after the vehicle body reaches a specified place, the electric push rod 84 is started to enable the conical exhaust port 831 to be in butt joint with the conical air inlet 532, then the lifting motor 21 is started, the threaded rod 22 drives the input end of the hose 82 to reach a specified height, the air pump 81 is started, and gas sampling is started. After sampling is finished, the air pump 81 is closed, the electric push rod 84 is started again to retract the conical exhaust port 831, then the vehicle body 1 is controlled to reach the next sampling point, the indexing motor 62 is started to rotate by a fixed angle, the next group of gas collection assemblies 5 are rotated to the position of the butt-joint air extraction assembly 8, the electric push rod 84 is started again, the height of the input end of the hose 82 is adjusted, and then the air pump 81 is started to finish the sampling. And the like, completing the subsequent sampling. After the last sampling is finished, the vehicle body 1 is controlled to return to the outdoor, and the absorption liquid in the gas washing bottle 51 is taken out for the next detection test.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a formaldehyde sampling detection device, includes automobile body (1), gas collection subassembly (5) is installed to automobile body (1), gas collection subassembly (5) are including being used for collecting gaseous gas washing bottle (51), gas collection subassembly (5) are connected with air pumping subassembly (8), air pumping subassembly (8) include air pump (81), its characterized in that: the automobile body (1) rotationally is connected with graduated disk (3), graduated disk (3) detachably installs a plurality ofly gas washing bottle (51), gas washing bottle (51) can follow graduated disk (3) rotate, the output of air pump (81) has the ductility, works as the output of gas washing bottle (51) rotates to when just setting with the output of air pump (81), the output of air pump (81) adjustable extremely with the output of gas washing bottle (51) is connected.

2. The formaldehyde sampling detection device of claim 1, wherein: the gas washing bottle (51) is provided with a bottle stopper (54) used for sealing the gas washing bottle (51), an air inlet pipe (53) and an air outlet pipe (52) are installed on the bottle stopper (54), a one-way valve (521) is installed on the air outlet pipe (52), and a pressure release valve (531) is installed on the air inlet pipe (53).

3. The formaldehyde sampling detection device according to claim 2, characterized in that: the output end of the air pump (81) is fixedly connected with an expansion pipe (83), the vehicle body (1) is fixedly connected with an electric push rod (84), the expansion pipe (83) is far away from one end of the air pump (81) and the output end of the air pump (81) are fixedly connected, and the electric push rod (84) can push the expansion pipe (83) to be connected with the air inlet pipe (53).

4. The formaldehyde sampling detection device according to claim 2, characterized in that: the one end that gas washing bottle (51) was kept away from in intake pipe (53) is provided with toper air inlet (532), the output of subassembly (8) of bleeding is provided with toper gas vent (831), toper gas vent (831) lateral wall can with the inside wall laminating of toper air inlet (532).

5. The formaldehyde sampling detection device of claim 1, wherein: input fixedly connected with hose (82) of air pump (81), automobile body (1) rotationally is connected with threaded rod (22), automobile body (1) fixedly connected with guide bar group (23), threaded rod (22) rotationally is connected with slider (24), slider (24) can install in with sliding guide bar group (23), keep away from hose (82) the one end of air pump (81) with slider (24) fixed connection.

6. The formaldehyde sampling detection device according to claim 4, wherein: the dividing plate (3) is fixedly connected with a cover plate (7), and the lower end face of the cover plate (7) is attached to the upper end face of the dividing plate (3).

7. The formaldehyde sampling detection device of claim 6, wherein: the lower terminal surface of apron (7) has seted up standing groove (71), go up standing groove (71) with the lateral wall laminating of toper air inlet (532), standing groove (32) have been seted up down to the up end of graduated disk (3), standing groove (32) down with the lateral wall laminating of toper air inlet (532).

8. The formaldehyde sampling detection device of claim 1, wherein: the vehicle body (1) comprises wheels (12), the wheels (12) are provided with a plurality of wheels, and each wheel (12) is driven by an independent driving motor.

Images