Portable formaldehyde sampling absorption tube

Abstract

The utility model discloses a portable formaldehyde sampling absorption tube which comprises a horizontally-arranged absorption cylinder assembly, a polypropylene fiber tube bundle is installed in the absorption cylinder assembly, a sealing circular plate is hinged to one end of the absorption cylinder assembly, a supporting plate is connected to the sealing circular plate, a magnet column is installed on the supporting plate, and the magnet column is connected to the other end of the absorption cylinder assembly. An absorption block is mounted on the absorption cylinder assembly, an exhaust fan assembly is hinged to the other end of the absorption cylinder assembly, and a base is connected to the exhaust fan assembly; the device has the advantages that the device is simple in structure and ingenious in conception, the sealing plate assembly and the exhaust fan assembly are designed at the two ends of the absorption barrel assembly respectively in a hinged connection mode, operation is quicker and more convenient, and meanwhile when the sealing plate assembly is in an open state and the exhaust fan assembly is in a closed state, the sealing plate assembly is not in a closed state. The device can be used as a placing support of an absorption cylinder assembly, does not need to carry an additional measuring tube support, is more flexible to use, and is worthy of large-scale popularization and application.

Description

Technical Field

[0001] This utility model relates to the technical field of formaldehyde sampling equipment, and in particular to a portable formaldehyde sampling absorption tube. Background Technology

[0002] Formaldehyde in indoor air mainly originates from building decoration materials, furniture, various adhesives, coatings, and synthetic textiles, among which artificial boards have the highest formaldehyde content. The formaldehyde release rate accelerates with increasing temperature, severely polluting the environment. Therefore, monitoring the formaldehyde concentration in ambient and indoor air is crucial. Currently, the main method for detecting formaldehyde in the environment and indoor air is spectrophotometry. Therefore, when collecting formaldehyde samples outdoors, it is necessary to carry a large amount of formaldehyde absorption liquid and porous glass plate absorption tubes, which is inconvenient for sample collection and transportation. To address this, Chinese patent application number CN201220369333.8 discloses a "formaldehyde gas sampling tube," which, while offering some convenience, still requires frequent disassembly and resealing of the silicone rubber stopper during sampling. It also requires on-site connection to the gas pump pipeline, making the operation cumbersome. Furthermore, a glass tube storage rack is needed to horizontally and for extended periods for air sampling, highlighting the urgent need for improvement. Utility Model Content

[0003] The purpose of this invention is to provide a portable formaldehyde sampling and absorption tube to solve the technical problems of complex operation and inconvenient use of existing sampling tubes.

[0004] The present invention relates to a portable formaldehyde sampling and absorption tube, comprising a horizontally arranged absorption cylinder assembly, a polypropylene fiber tube bundle installed inside the absorption cylinder assembly, a sealing circular plate hinged to one end of the absorption cylinder assembly, a support plate connected to the sealing circular plate, a magnetic column installed on the support plate, and an adsorption block installed on the absorption cylinder assembly. When the sealing circular plate seals the absorption cylinder assembly, the magnetic column is magnetically adsorbed onto the adsorption block. A fan assembly is hinged to the other end of the absorption cylinder assembly, a magnetic sheet is installed at the end of the absorption cylinder assembly for magnetically adsorbing the fan assembly, and a base is connected to the fan assembly.

[0005] Furthermore, the absorbent tube assembly includes a central tube, with side tubes screwed to both ends of the central tube, and the polypropylene fiber bundle is installed inside the central tube.

[0006] Furthermore, the exhaust fan assembly includes a duct, within which spiral blades are rotatably connected. The spiral blades are driven by a motor via a rotating shaft. The motor is electrically connected to a battery, which is installed inside the base.

[0007] Furthermore, the absorption cylinder assembly is made of stainless steel.

[0008] Furthermore, a rubber pad is installed at one end of the side tube.

[0009] The beneficial effects of this utility model are as follows: This utility model has a simple structure and ingenious design. It adopts a hinged connection method and designs a sealing plate assembly and an exhaust fan assembly at both ends of the absorption cylinder assembly, which makes the operation faster and more convenient. At the same time, when the sealing plate assembly is in the open state and the exhaust fan assembly is in the closed state, it can be used as a support for placing the absorption cylinder assembly, eliminating the need to carry an additional measuring tube support. This makes it more flexible to use and worthy of widespread promotion and application. Attached Figure Description

[0010] Figure 1 This is a perspective view of the present utility model;

[0011] Figure 2 This is a cross-sectional view of the present invention;

[0012] In the diagram, the components are: central tube 1, side tube 2, sealing circular plate 3, support plate 4, magnetic column 5, polypropylene fiber tube bundle 6, air duct 7, spiral blade 8, base 9, storage battery 10, magnetic sheet 11, rubber pad 12, and adsorption block 13. Detailed Implementation

[0013] like Figure 1 and Figure 2 As shown, a portable formaldehyde sampling absorption tube includes a horizontally arranged absorption cylinder assembly. A polypropylene fiber tube bundle 6 is installed inside the absorption cylinder assembly. A sealing circular plate 3 is hinged to one end of the absorption cylinder assembly. A support plate 4 is connected to the sealing circular plate 3. A magnetic column 5 is installed on the support plate 4. An adsorption block 13 is installed on the absorption cylinder assembly. When the sealing circular plate 3 seals the absorption cylinder assembly, the magnetic column 5 is magnetically adsorbed onto the adsorption block 13. An exhaust fan assembly is hinged to the other end of the absorption cylinder assembly. A magnetic piece 11 is installed at one end of the absorption cylinder assembly. The magnetic piece 11 is used to magnetically adsorb the exhaust fan assembly. A base 9 is connected to the exhaust fan assembly. The absorption cylinder assembly includes a central tube 1. Side tubes 2 are screwed to both ends of the central tube 1. The polypropylene fiber tube bundle 6 is installed inside the central tube 1.

[0014] like Figure 2As shown, the exhaust fan assembly includes a duct 7, within which a spiral blade 8 is rotatably connected. The spiral blade 8 is driven by a motor via a rotating shaft. The motor is electrically connected to a battery 10, which is installed inside the base 9. To facilitate the support plate 4 and the base 9 acting as a placement bracket, when the sealing plate assembly is in the open state and the exhaust fan assembly is in the closed state, the distance between the outer end of the support plate 4 and the center line of the duct 7 is equal to the distance between the outer end of the base 9 and the center line of the duct 7. The absorption cylinder assembly is made of stainless steel. A rubber pad 12 is installed at one end of the side pipe 2.

[0015] In specific work, such as Figure 1 and Figure 2 As shown, first, close the sealing circular plate 3 and turn on the exhaust fan assembly. Then, inject formaldehyde absorption liquid into one side of the absorption cylinder assembly. After the formaldehyde absorption liquid completely soaks the polypropylene fiber tube bundle 6, use a syringe to extract the excess formaldehyde absorption liquid from the tube. Then, open the sealing plate assembly and turn off the exhaust fan assembly. The support plate 4 and the base 9 can then serve as a support for placing the formaldehyde absorption sampling for several hours. During the absorption process, turn on the motor to allow the air in the space being tested to pass through the absorption cylinder assembly, thus completing the absorption sampling.

[0016] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A portable formaldehyde sampling and absorption tube, characterized in that: It includes a horizontally arranged absorption cylinder assembly, in which a polypropylene fiber tube bundle (6) is installed. A sealing circular plate (3) is hinged to one end of the absorption cylinder assembly. A support plate (4) is connected to the sealing circular plate (3). A magnetic column (5) is installed on the support plate (4). An adsorption block (13) is installed on the absorption cylinder assembly. When the sealing circular plate (3) seals the absorption cylinder assembly, the magnetic column (5) is magnetically adsorbed onto the adsorption block (13). A fan assembly is hinged to the other end of the absorption cylinder assembly. A magnetic piece (11) is installed at the end of the absorption cylinder assembly. The magnetic piece (11) is used to magnetically adsorb the fan assembly. A base (9) is connected to the fan assembly.

2. The portable formaldehyde sampling and absorption tube according to claim 1, characterized in that: The absorber assembly includes a central tube (1), with side tubes (2) screwed to both ends of the central tube (1), and the polypropylene fiber bundle (6) is installed inside the central tube (1).

3. The portable formaldehyde sampling and absorption tube according to claim 2, characterized in that: The exhaust fan assembly includes a duct (7), in which a spiral blade (8) is rotatably connected. The spiral blade (8) is connected to a motor via a rotating shaft. The motor is electrically connected to a battery (10), which is installed in the base (9).

4. A portable formaldehyde sampling and absorption tube according to claim 1, characterized in that: The absorption cylinder assembly is made of stainless steel.

5. A portable formaldehyde sampling and absorption tube according to claim 2, characterized in that: A rubber pad (12) is installed at one end of the side tube (2).

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