CN212964242U - Formaldehyde sampler - Google Patents
Formaldehyde sampler Download PDFInfo
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- CN212964242U CN212964242U CN201922474901.5U CN201922474901U CN212964242U CN 212964242 U CN212964242 U CN 212964242U CN 201922474901 U CN201922474901 U CN 201922474901U CN 212964242 U CN212964242 U CN 212964242U
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Abstract
The utility model discloses a formaldehyde sampler, which comprises a protective cover, a first air duct, a lifting belt, a first electromagnetic three-way valve, a second air duct, a vacuum pump, an installation box, a base, a gas collecting bottle, a solenoid valve, a fan and a deflation valve, wherein the installation box is transversely arranged in a cuboid shape, the lifting belt is installed on the top surface of the installation box, box boards on two sides of the installation box are arranged in a semicircular shape, outer walls on two sides of the installation box are respectively in threaded connection with a semicircular protective cover, the device utilizes the vacuum pump to vacuumize the sampling bottle, ensures that the gas to be sampled is completely contained in the sampling bottle, ensures the accuracy of formaldehyde detection, utilizes six gas collecting bottles to sample at different times, obtains an average value, further ensures the accuracy of formaldehyde detection, can be controlled at regular time, and does not need workers to stay in a room containing, the health of the staff is ensured.
Description
Technical Field
The utility model relates to a formaldehyde field of gathering specifically is formaldehyde sample thief.
Background
Formaldehyde, also known as formaldehyde. Colorless and has stimulating effect on eyes and nose. Melting point-92 deg.C, boiling point-19.5 deg.C. Is easily soluble in water and ethanol. The concentration of the aqueous solution can be up to 55%, usually 40%, and is called formalin (formalin). Has strong reducibility, and particularly has stronger reducibility in alkaline solution. Can be combusted, and the steam and air form explosive mixture with explosion limit of 7-73% (volume). The ignition point is about 300 ℃. Can be prepared by dehydrogenation or oxidation of methanol under the catalysis of metals such as silver, copper and the like, and can also be separated from hydrocarbon oxidation products. Can be used as raw materials of phenolic resin, urea-formaldehyde resin, vinylon, urotropine, pentaerythritol, dye, pesticide, disinfectant and the like. The industrial formaldehyde solution generally contains 37% of formaldehyde and 15% of methanol, and is used as a polymerization inhibitor and has a boiling point of 101 ℃. In 2017, 10 and 27, in a carcinogen list published by the international cancer research institution of the world health organization, formaldehyde is put in a carcinogen list. The house which is just finished contains a large amount of formaldehyde gas, so the house needs to be placed for a period of time, and can be put in after the formaldehyde sampling detection is qualified.
And (3) detecting the closing time of the door and the window during sampling according to the indoor air quality standard GB/T18883-2002 for the decoration family which is ready to live or already live: the detection result of 12-20 hours of closing the door and window during air sampling is closer to real (namely the window closing time of people in normal sleep at night is more than 12 hours and does not exceed 20 hours), the formaldehyde gas sampler used in the market can only perform single gas sampling and cannot perform timing sampling, and the air in the sampling bottle is not pumped away, so that the accuracy is not good enough.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a formaldehyde sample thief to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the formaldehyde sampler comprises a protective cover, a first air duct, a lifting belt, a first electromagnetic three-way valve, a second air duct, a vacuum pump, an installation box, a base, a gas collecting bottle, an electromagnetic valve, a fan and a gas release valve, wherein the installation box is transversely arranged in a cuboid shape, the lifting belt is installed on the top surface of the installation box, box plates on two sides of the installation box are arranged in a semicircular shape, outer walls on two sides of the installation box are respectively in threaded connection with a semicircular protective cover, the protective covers on two sides are symmetrically arranged, the protective cover is uniformly provided with a plurality of circular air holes, the middle parts of the outer walls on two sides of the installation box are positioned in the protective cover and are respectively fixed with the fan and the vacuum pump by bolts, the gas outlet end of the fan and the gas inlet end of the vacuum pump are respectively fixedly, the other ends of the two first air ducts are respectively communicated with a first port and a second port of a first electromagnetic three-way valve in the installation box, a third port of the first electromagnetic three-way valve is communicated with the first port of a second electromagnetic three-way valve through a guide pipe, a second port and a third port of the second electromagnetic three-way valve are respectively fixedly connected with one end of a second air duct, the two second air ducts are symmetrically arranged at two sides of the installation box, three air ports are respectively and uniformly arranged at the bottoms of the two second air ducts, the air ports on the second air ducts are respectively and fixedly connected with an air inlet at the top of an air collecting bottle through a guide pipe, electromagnetic valves are arranged on the guide pipes communicated with the second air ducts, air discharge valves are arranged at air outlet positions arranged at the upper part of the front surface of the air collecting bottle, the air collecting bottle is provided with six air discharge valves and is uniformly arranged in parallel, the gas collecting bottle is characterized in that the bottom of the gas collecting bottle is fixed on the base, the bottom of the gas collecting bottle is in threaded connection with the base, the base is provided with six parts, the six parts are uniformly and parallelly installed on the top surface of the bottom plate of the installation box from left to right, and a sealing door is arranged at the position of the box plate on the front side of the installation box.
As a further aspect of the present invention: the gas collecting bottle is made of glass materials.
As a further aspect of the present invention: a plurality of strip-shaped grooves are uniformly formed in the bottom surface of the mounting box to form a friction layer.
As a further aspect of the present invention: the control system adopts a controller with the model number of TMS320F28335 PGFA.
Compared with the prior art, the beneficial effects of the utility model are that: this device utilizes the vacuum pump to carry out the evacuation to the sampling bottle, guarantee that what the sampling bottle was adorned completely is the gas of treating the sampling, guarantee the degree of accuracy that formaldehyde detected, utilize six gas cylinders to sample at different times, get the average value, the degree of accuracy that formaldehyde detected has more been guaranteed, gas cylinder and base threaded connection, make the device when removing, gas cylinder can remain stable state always, avoid it to suffer the striking, utilize the bar connected in star that the install bin bottom surface was seted up, the frictional force of improvement device, the stability that the improvement device was placed, and can regularly control by the device, do not need the staff to stay for a long time in the room the inside that contains formaldehyde, staff's is guaranteed healthy.
Drawings
FIG. 1 is a schematic structural diagram of a vertical cross-sectional front view of a formaldehyde sampler.
FIG. 2 is a schematic structural diagram of a top view of a formaldehyde sampler.
FIG. 3 is a schematic structural diagram of a left side view of a gas collecting bottle in the formaldehyde sampler.
FIG. 4 is a schematic diagram showing the left side view of the shield in the formaldehyde sampler.
In the figure: the device comprises a dust screen 1, a protective cover 2, a first air duct 3, a lifting belt 4, a first electromagnetic three-way valve 5, a second electromagnetic three-way valve 6, a second air duct 7, a vacuum pump 8, an installation box 9, a base 10, a gas collecting bottle 11, an electromagnetic valve 12, a fan 13 and a gas release valve 14.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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. 1-4, in the embodiment of the present invention, a formaldehyde sampler comprises a dust screen 1, a protective cover 2, a first air duct 3, a lifting belt 4, a first electromagnetic three-way valve 5, a second electromagnetic three-way valve 6, a second air duct 7, a vacuum pump 8, an installation box 9, a base 10, a gas collecting bottle 11, an electromagnetic valve 12, a fan 13 and a deflation valve 14, wherein the installation box 9 is horizontally arranged in a rectangular parallelepiped shape, the lifting belt 4 is installed on the top surface of the installation box 9, the box plates on both sides of the installation box 9 are arranged in a semicircular shape, the outer walls on both sides of the installation box 9 are respectively in threaded connection with a semicircular protective cover 2, the protective covers 2 on both sides are symmetrically arranged, a plurality of circular air vents are uniformly arranged on the protective cover 2, the middle parts of the outer walls on both sides of the installation box 9 are positioned inside the protective cover 2, the fan 13 and the vacuum pump 8 are respectively fixed, the air outlet end of the fan 13 and the air inlet end of the vacuum pump 8 are fixedly connected with one end of a first air duct 3 respectively, the other ends of the two first air ducts 3 penetrate through two sides of the installation box 9 respectively and extend into the installation box 9, the other ends of the two first air ducts 3 are communicated with the first opening and the second opening of the first electromagnetic three-way valve 5 in the installation box 9 respectively, the third opening of the first electromagnetic three-way valve 5 is communicated with the first opening of the second electromagnetic three-way valve 6 through a guide pipe, the second opening and the third opening of the second electromagnetic three-way valve 6 are fixedly connected with one end of a second air duct 7 respectively, the two second air ducts 7 are symmetrically arranged at two sides of the installation box 9, three air ports are uniformly arranged at the bottoms of the two second air ducts 7 respectively, the air ports on the second air ducts 7 are fixedly connected with an air inlet at the top of an air collecting bottle 11 through guide, be equipped with solenoid valve 12 on the pipe of gas production bottle 11 and second air duct 7 intercommunication, the gas outlet position department that gas production bottle 11 openly upper portion set up is provided with bleed valve 14, gas production bottle 11 is made by glass material, gas production bottle 11 has six, evenly sets up side by side from the left side to the right side, gas production bottle 11 bottom is fixed on base 10, threaded connection between gas production bottle 11 bottom and the base 10, base 10 has six, evenly installs side by side on the bottom plate top surface of install bin 9 from the left side to the right side, and base 10 is located install bin 9 and is close to positive one end, the positive boxboard position department of install bin 9 is equipped with sealing door, a plurality of bar grooves have evenly been seted up to install bin 9 bottom surface, forms the frictional layer, install control system on one side of the back that is close to install bin 9 to the bottom plate top surface of install bin 9.
The control system adopts a controller with the model number of TMS320F28335 PGFA.
The utility model discloses a theory of operation is: the device is placed in a room to be detected, doors and windows of the room are closed, a control system is used for controlling when a first electromagnetic three-way valve, a second electromagnetic three-way valve, an electromagnetic valve, a fan and a vacuum pump are opened and closed, the vacuum pump is firstly opened to vacuumize a gas collection bottle and a gas guide pipe, then the vacuum pump is controlled to be disconnected with a gas circuit communicated with the gas collection bottle, the fan is opened at regular time within twelve to twenty hours of tightly closing the doors and the windows, and the gas circuit of one gas collection bottle is respectively controlled to be opened according to time to collect gas.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. The formaldehyde sampler comprises a dustproof net, a protective cover, a first air duct, a lifting belt, a first electromagnetic three-way valve, a second air duct, a vacuum pump, an installation box, a base, a gas production bottle, an electromagnetic valve, a fan and a deflation valve, and is characterized in that the installation box is transversely arranged in a cuboid shape, the lifting belt is installed on the top surface of the installation box, box boards on two sides of the installation box are arranged in a semicircular shape, outer walls on two sides of the installation box are respectively in threaded connection with a semicircular protective cover, the protective covers on two sides are symmetrically arranged, the middle parts of the outer walls on two sides of the installation box are positioned in the protective cover, the fan and the vacuum pump are respectively fixed by bolts, a layer of dustproof net is fixed on the inner wall of the protective cover close to one side of the fan, the gas outlet end of the fan and the gas inlet end of, the gas collecting cylinder comprises a mounting box, two first gas guide pipes, two second gas guide pipes, two gas collecting cylinders, two gas guide pipes, two gas collecting cylinders, six bases and two gas collecting cylinders, wherein the other ends of the two first gas guide pipes are respectively communicated with a first port and a second port of a first electromagnetic three-way valve in the mounting box, the third port of the first electromagnetic three-way valve is communicated with the first port of the second electromagnetic three-way valve, the second port and the third port of the second electromagnetic three-way valve are respectively and fixedly connected with one end of the second gas guide pipes, the two gas guide pipes are symmetrically arranged on two sides of the mounting box, the three gas guide pipes are respectively and uniformly arranged at the bottoms of the, and the base is positioned at one end of the installation box close to the front side.
2. The formaldehyde sampler as recited in claim 1, wherein the protective cover has a plurality of circular vents.
3. The formaldehyde sampler according to claim 1, wherein the conduit connecting the gas collecting bottle and the second gas-guiding tube is provided with an electromagnetic valve.
4. The formaldehyde sampler according to claim 1, wherein a release valve is arranged at the position of the air outlet arranged at the upper part of the front surface of the gas collecting bottle.
5. The formaldehyde sampler according to claim 1, wherein the bottom of the gas sampling bottle is connected with the base by screw threads.
6. The formaldehyde sampler according to claim 1, wherein a sealing door is provided at the position of the box plate on the front surface of the installation box.
7. The formaldehyde sampler of claim 1, wherein a control system is mounted adjacent to a back side of the mounting box, the control system being a controller of model TMS320F28335 PGFA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922474901.5U CN212964242U (en) | 2019-12-31 | 2019-12-31 | Formaldehyde sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922474901.5U CN212964242U (en) | 2019-12-31 | 2019-12-31 | Formaldehyde sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212964242U true CN212964242U (en) | 2021-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922474901.5U Active CN212964242U (en) | 2019-12-31 | 2019-12-31 | Formaldehyde sampler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212964242U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115684015A (en) * | 2022-11-01 | 2023-02-03 | 江苏芯缘半导体有限公司 | Chip appearance detection mechanism |
-
2019
- 2019-12-31 CN CN201922474901.5U patent/CN212964242U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115684015A (en) * | 2022-11-01 | 2023-02-03 | 江苏芯缘半导体有限公司 | Chip appearance detection mechanism |
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