CN217845799U

CN217845799U - Front end device for sampling formaldehyde for indoor environment

Info

Publication number: CN217845799U
Application number: CN202221860733.9U
Authority: CN
Inventors: 李东海; 林伟; 黄健; 张金梅; 张诗祺; 夏威宁; 邹伟华
Original assignee: Guangdong Yousheng Engineering Testing Co ltd
Current assignee: Guangdong Yousheng Engineering Testing Co ltd
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2022-11-18
Anticipated expiration: 2032-07-19

Abstract

The utility model provides a front end device of formaldehyde sampling for indoor environment, including first connecting pipe, second connecting pipe, third connecting pipe set up respectively at the both ends of first connecting pipe, just the junction of second connecting pipe, third connecting pipe and first connecting pipe still set up sealed filter screen, first connecting pipe intussuseption be filled with the drier. The utility model has simple structure and strong practicability, and the technical problem can be solved by arranging the front end device on the sampling device; the utility model discloses a pack the drier in the second connecting pipe to can carry out the drying to the air of gathering, can realize the filtration of air through sealed filter screen simultaneously, also can place the drier simultaneously and reveal.

Description

Front end device for sampling formaldehyde for indoor environment

Technical Field

The utility model belongs to the technical field of the formaldehyde sampling device technique and specifically relates to a front end device of formaldehyde sampling for indoor environment.

Background

With the continuous standardization of home decoration market, the requirements of people on home decoration are higher and higher, and the quality of indoor air after decoration attracts more and more attention besides the quality of decoration materials and construction. In the indoor air after decoration, formaldehyde is one of the main pollutants, and formaldehyde is a carcinogenic substance and has toxic action on a nervous system, an immune system, a liver and the like.

The existing formaldehyde sampling generally adopts a large bubble absorption tube internally filled with 5mL of absorption liquid, and 20L of gas is collected at a detection point at the flow rate of 1L/min.

However, in the sampling process, because the atmospheric environmental pollutants on the detection site are complex, the air humidity, suspended matters in the air and other particulate matters easily influence the measurement result of the formaldehyde when the formaldehyde is directly sampled by the absorption liquid.

Disclosure of Invention

Not enough to prior art, the utility model provides a front end device of formaldehyde sampling for indoor environment, the device can realize avoiding the follow-up result of impression to gathering gaseous filtration and drying.

The technical scheme of the utility model is that: the utility model provides a front end device of formaldehyde sampling for indoor environment, includes first connecting pipe, second connecting pipe, third connecting pipe set up respectively at the both ends of first connecting pipe, just the junction of second connecting pipe, third connecting pipe and first connecting pipe still set up sealed filter screen, first connecting pipe intussuseption be filled with the drier.

Preferably, the first connecting pipe, the second connecting pipe and the third connecting pipe are detachably connected.

Preferably, one end of the second connecting pipe and one end of the third connecting pipe are provided with a connecting head, the connecting head is provided with only external threads, and the inner sides of the two ends of the first connecting pipe are provided with internal threads matched with the external threads of the connecting head.

Preferably, the connecting head is further sleeved with a sealing ring.

Preferably, the first connecting pipe, the second connecting pipe and the third connecting pipe are stainless steel pipes or quartz glass pipes.

Preferably, the sealing filter screen is placed in the first connecting pipe, placing grooves with T-shaped sections are formed in two ends of the first connecting pipe, and the sealing filter screen is placed in the T-shaped placing grooves.

Preferably, the sealed filter screen is made of stainless steel.

Preferably, the desiccant is silica gel desiccant.

Preferably, the second connecting pipe is connected with a formaldehyde sampling device.

Preferably, the length of the first connecting pipe is not more than 6cm, the length of the second connecting pipe and the third connecting pipe is not more than 2cm, and the diameter of the first connecting pipe, the diameter of the second connecting pipe and the diameter of the third connecting pipe are 0.5cm.

The utility model has the advantages that:

1. the utility model has simple structure and strong practicability, and the technical problem can be solved by arranging the front end device on the sampling device;

2. the utility model discloses an intussuseption drier in the second connecting pipe to can carry out the drying to the air of gathering, can realize the filtration of air through sealed filter screen simultaneously, also can place the drier simultaneously and reveal.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of a second connecting pipe of the present invention;

fig. 3 is a schematic structural diagram of the first connection pipe of the present invention;

in the figure, 1-a first connecting pipe, 2-a second connecting pipe, 3-a third connecting pipe, 4-a sealing filter screen and 5-a drying agent;

11-connector, 12-placing groove and 13-sealing ring.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:

as shown in fig. 1-3, the present embodiment provides a front end device for sampling formaldehyde for an indoor environment, including a first connecting pipe 1, a second connecting pipe 2, and a third connecting pipe 3, where the second connecting pipe 2 and the third connecting pipe 3 are respectively disposed at two ends of the first connecting pipe 1, a sealing filter screen 4 is further disposed at a joint of the second connecting pipe 2, the third connecting pipe 3, and the first connecting pipe 1, and a drying agent 5 is filled in the first connecting pipe 1.

Preferably, in this embodiment, the first connecting pipe 1, the second connecting pipe 2, and the third connecting pipe 3 are detachably connected.

Preferably, as shown in fig. 2, one end of the second connecting pipe 2 and one end of the third connecting pipe 3 have a connecting head 11, the connecting head 11 is provided with only an external thread, and the inner sides of the two ends of the first connecting pipe 1 are provided with internal threads matched with the external thread of the connecting head 11.

As shown in fig. 2, a sealing ring 13 is further sleeved on the connecting head 11.

Preferably, in this embodiment, the first connecting pipe 1, the second connecting pipe 2, and the third connecting pipe 3 are stainless steel pipes or quartz glass pipes.

Preferably, as shown in fig. 3, the sealing filter net 4 is placed in the first connecting pipe 1, placing grooves 12 with T-shaped cross sections are arranged in two ends of the first connecting pipe 1, and the sealing filter net 4 is placed in the placing grooves 12 with T-shaped cross sections.

Preferably, the sealed filter screen 4 is made of stainless steel.

Preferably, in this embodiment, the drying agent 5 is a silica gel drying agent 5.

Preferably, the second connecting pipe 2 is connected to a formaldehyde sampling device.

Preferably, in this embodiment, the length of the first connecting pipe 1 is not greater than 6cm, the lengths of the second connecting pipe 2 and the third connecting pipe 3 are not greater than 2cm, and the diameters of the first connecting pipe 1, the second connecting pipe 2 and the third connecting pipe 3 are 0.5cm.

The foregoing embodiments and description are illustrative of the principles and preferred embodiments of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims.

Claims

1. The utility model provides a front end device of indoor environment with formaldehyde sampling which characterized in that: including first connecting pipe (1), second connecting pipe (2), third connecting pipe (3) set up respectively at the both ends of first connecting pipe (1), just second connecting pipe (2), third connecting pipe (3) and the junction of first connecting pipe (1) still set up sealed filter screen (4), first connecting pipe (1) intussuseption be filled with drier (5).

2. The front-end device for sampling formaldehyde for indoor environment according to claim 1, characterized in that: the first connecting pipe (1), the second connecting pipe (2) and the third connecting pipe (3) are detachably connected.

3. The front-end device for sampling formaldehyde for indoor environment of claim 2, characterized in that: one end of second connecting pipe (2), third connecting pipe (3) have a connector (11), connector (11) on establish only the external screw thread, first connecting pipe (1) both ends inboard be provided with be used for with the external screw thread matched with internal thread of connector (11).

4. The front-end device for sampling formaldehyde for indoor environment of claim 3, wherein: the connector (11) is also sleeved with a sealing ring (13).

5. The front-end device for sampling formaldehyde for indoor environment of claim 2, characterized in that: the first connecting pipe (1), the second connecting pipe (2) and the third connecting pipe (3) are stainless steel pipes or quartz glass pipes.

6. The front-end device for sampling formaldehyde for indoor environment of claim 1, which is characterized in that: the sealing filter screen (4) is placed in the first connecting pipe (1), placing grooves (12) with T-shaped sections are formed in two ends of the first connecting pipe (1), and the sealing filter screen (4) is placed in the T-shaped placing grooves (12).

7. The front-end device for sampling formaldehyde for indoor environment of claim 6, wherein: the sealed filter screen (4) is made of stainless steel.

8. The front-end device for sampling formaldehyde for indoor environment of claim 1, which is characterized in that: the drying agent (5) is a silica gel drying agent (5).

9. The front-end device for sampling formaldehyde for indoor environment according to claim 1, characterized in that: the length of the first connecting pipe (1) is not more than 6cm, the lengths of the second connecting pipe (2) and the third connecting pipe (3) are not more than 2cm, and the diameters of the first connecting pipe (1), the second connecting pipe (2) and the third connecting pipe (3) are 0.5cm.

10. The front-end device for sampling formaldehyde for indoor environment of claim 1, which is characterized in that: the second connecting pipe (2) is connected with a formaldehyde sampling device.