Air sample collector

Abstract

The utility model discloses an air sample collector which comprises a shell, a support frame fixed at the bottom of the shell and a connecting pipe connected with the top of the shell, and further comprises an air inlet shell connected with the top of the connecting pipe; the air hole is formed in the air inlet shell and extends to the top; the fan is arranged in the air hole; the protective cover is arranged at the top of the air inlet shell; and the auxiliary pipe extends into the air inlet shell from the top of the protective cover and is used for assisting air inlet. According to the air sample collector provided by the utility model, a user can conveniently maintain and replace the motor in the air sample collector, the probability that air cannot enter the air sample collector normally due to the fact that the air inlet holes are blocked can be reduced, and stable air entering can be more convenient, so that stable air monitoring is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of air sample collection, in particular to an air sample collector. Background Art

[0002] An air sample collector is an instrument or device used to collect pollutants or specific components in the air. It can collect pollutants or specific components in the air through direct sampling or enrichment (concentration) sampling methods. It can also help monitor atmospheric pollutants and provide reliable data to assess air quality.

[0003] Air sample collectors are widely used in environmental monitoring, occupational health and scientific research.

[0004] When in use, place the air sample collector at the location where sampling is required, and then start the air sample collector. The air sample collector can collect and monitor the surrounding air.

[0005] However, when the existing air sample collector is used for a long time, the floating objects outside are easy to block the inlet hole, which not only affects the efficiency of air intake, but also makes it easy to fail to intake air normally, affecting the monitoring and collection effects, and bringing inconvenience to the user;

[0006] At the same time, current air sample collectors all use fan-assisted air intake, but it is inconvenient to repair and replace the fan after it is damaged, which brings inconvenience to users. Utility Model Content

[0007] In view of the deficiencies in the prior art, the utility model provides an air sample collector, the purpose of which is to solve the above problems.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] An air sample collector comprises a shell, a support frame is fixed to the bottom of the shell, a connecting pipe is connected to the top of the shell, and further comprises:

[0010] an air inlet casing connected to the top of the connecting pipe;

[0011] An air hole is opened inside the air intake shell and extends to the top;

[0012] A fan is arranged inside the air hole;

[0013] A protective cover, which is arranged on the top of the air intake shell;

[0014] The auxiliary pipe extends from the top of the protective cover to the inside of the air intake shell and is used for assisting air intake.

[0015] Preferably, the protective cover comprises:

[0016] A cover plate, which is arranged on the top of the air intake shell and covers the air intake shell;

[0017] A plurality of support rods fixed to the bottom of the cover plate;

[0018] a fixing ring, which is fixed to the bottom of the support rod and placed on the top of the air intake housing;

[0019] The filter screen is fixedly connected between the fixing ring and the cover plate.

[0020] Preferably, a soft pad is fixed to the bottom of the fixing ring.

[0021] Preferably, the auxiliary pipe is detachably connected to the air intake shell via a connecting structure.

[0022] Preferably, the connection structure comprises:

[0023] A connecting sleeve, which is connected to the air intake housing through a plurality of connecting rods and is located inside the air hole;

[0024] The threaded column is fixed to the bottom of the auxiliary pipe and is threadedly connected to the connecting sleeve.

[0025] Preferably, a plurality of grooves are provided on the top of the air intake shell, and the ends of the connecting rods are placed inside the grooves and connected to the air intake shell by screws.

[0026] Preferably, the auxiliary tube comprises:

[0027] The air inlet pipe is an inverted J-shaped pipe, the longer end of which is located below the cover plate and fixedly connected to the threaded column;

[0028] A through hole is provided inside the threaded column, and the through hole is communicated with the air intake pipe;

[0029] A filter plate, which is embedded in the shorter end of the air inlet pipe and located on the top of the cover plate;

[0030] A fixing sleeve, which is annular and fixed inside the air inlet pipe and on the top of the filter plate;

[0031] One end of the soft rubber plate is fixed to the top of the fixing sleeve and covers the top of the fixing sleeve.

[0032] Preferably, the connection between the soft rubber plate and the fixing sleeve is smooth.

[0033] Compared with the prior art, the utility model has the following beneficial effects:

[0034] The utility model provides an air sample collector, which not only makes it easy for users to repair and replace the motor in the air sample collector, but also reduces the probability of the air inlet being blocked and unable to intake air normally, and can be more convenient for stable air intake to ensure stable air monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a structural schematic diagram of an air sample collector described in the utility model;

[0036] Figure 2 It is an enlarged schematic diagram of the structure of the air intake shell of the utility model;

[0037] Figure 3 It is an enlarged schematic diagram of the structure of the connection structure of the utility model;

[0038] Figure 4 It is an enlarged schematic diagram of the structure of the auxiliary pipe of the utility model.

[0039] In the figure: 10 outer shell, 11 support frame, 20 connecting pipe, 30 air intake shell, 31 air hole, 40 fan, 50 protective cover, 51 cover plate, 52 support rod, 53 fixing ring, 54 filter screen, 55 cushion, 60 auxiliary pipe, 61 air intake pipe, 62 filter plate, 63 fixing sleeve, 64 soft rubber plate, 70 connecting structure, 71 connecting sleeve, 72 threaded column, 73 connecting rod, 74 screw. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] An air sample collector includes a housing 10, a support frame 11 is fixed to the bottom of the housing 10, and a connecting pipe 20 is connected to the top of the housing 10. The housing 10 is an instrument housing of an existing air sample collector, and the control structure, installation structure, detection structure and detection method arranged therein are all adopted. This application does not make any changes to this part, and can be cited. The support frame 11 can be an existing tripod for placing the air sample collector;

[0042] In the examples of this application, please refer to Figure 1 and 2The top of the connecting pipe 20 is connected to the air intake shell 30, and the air intake shell 30 is provided with an air hole 31 extending to the top thereof. The air hole 31 is provided with a fan 40, and the fan 40 can be connected, started, stopped and controlled in an existing manner. The top of the air intake shell 30 is provided with a protective cover 50. Specifically, the protective cover 50 includes a cover plate 51 provided on the top of the air intake shell 30, and the cover plate 51 covers the air intake shell 30. Specifically, it can be as follows Figure 2 As shown, a plurality of support rods 52 are fixed to the bottom of the cover plate 51, a fixing ring 53 placed on the top of the air intake housing 30 is fixed to the bottom of the support rod 52, a filter screen 54 is fixedly connected between the fixing ring 53 and the cover plate 51, and a cushion 55 is fixed to the bottom of the fixing ring 53;

[0043] When in use, the fan 40 is started to drive the gas circulation, and the gas can pass through the gap between the air inlet shell 30 and the cover plate 51, the filter 54 and the air hole 31, and then enter the outer shell 10 through the connecting pipe 20. It is detected and used in the existing way, which is simple to operate and convenient for air intake. The entire air intake part is annular, the air intake area is large, and it is not easy to be blocked by floating objects.

[0044] For further information, see Figure 1 , 2 And 3, an auxiliary pipe 60 for assisting air intake is fixed on the top of the protective cover 50, the auxiliary pipe 60 extends to the interior of the air intake shell 30, and the air intake shell 30 is detachably connected to the air intake shell 30 through a connecting structure 70. After the gap between the cover plate 51 and the air intake shell 30 is blocked, the auxiliary pipe 60 can also assist the air intake, and there will be no problem of air intake failure.

[0045] Among them, the connecting structure 70 includes a connecting sleeve 71 connected to the air intake shell 30 through a plurality of connecting rods 73, the connecting sleeve 71 is located inside the air hole 31, and a threaded column 72 threadedly connected to the connecting sleeve 71 is fixed to the bottom of the auxiliary pipe 60. A plurality of grooves are opened on the top of the air intake shell 30, and the ends of the connecting rods 73 are placed inside the grooves and connected to the air intake shell 30 through screws 74. When the fan 40 needs to be replaced or repaired, the cover plate 51 is rotated to drive the auxiliary pipe 60 and the threaded column 72 to rotate in turn, and the threaded column 72 is turned down from the connecting sleeve 71, and then the cover plate 51 can be disassembled, and then the screws 74 are unscrewed, and the connecting sleeve 71 and the connecting rod 73 are taken out from the air hole 31. Then the fan 40 can be disassembled and repaired, and vice versa, it can be installed, and the operation is simple.

[0046] For further examples, see Figure 1 , 2, 3 and 4, the auxiliary pipe 60 includes an air inlet pipe 61, which is an inverted J-shaped pipe. The longer end of the air inlet pipe 61 is located below the cover plate 51 and is fixedly connected to the threaded column 72. A through hole is opened inside the threaded column 72, which is communicated with the air inlet pipe 61. The shorter end of the air inlet pipe 61 is inlaid with a filter plate 62 located on the top of the cover plate 51, that is, the shorter end of the air inlet pipe 61 is also located on the top of the cover plate 51. An annular fixing sleeve 63 is fixed inside the air inlet pipe 61. The fixing sleeve 63 is located on the top of the filter plate 62. One end of a soft rubber plate 64 is fixed on the top of the fixing sleeve 63. The soft rubber plate 64 covers the top of the fixing sleeve 63 as a whole, and the soft rubber plate The connection between 64 and the fixed sleeve 63 is smooth. Normally, the airflow generated by the fan 40 mainly acts on the filter screen 54, and the air enters through the filter screen 54. When the filter screen 54 is blocked by floating objects such as plastic bags, if the gas is not enough, the suction force generated by the fan 40 will act on the soft rubber plate 64, and the soft rubber plate 64 can be sucked up. Then the air passes through the filter plate 62, the gap between the soft rubber plate 64 and the fixed sleeve 63, the air inlet pipe 61 and the through hole, and then enters the air hole 31, and is then transmitted by the fan 40, thereby further reducing the probability that the air inlet is blocked and cannot be normally inlet, and is more convenient for stable air intake to ensure stable air monitoring.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0048] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air sample collector, comprising a shell, a support frame is fixed to the bottom of the shell, and a connecting pipe is connected to the top of the shell, characterized in that: Also includes: an air inlet casing connected to the top of the connecting pipe; An air hole is opened inside the air intake shell and extends to the top; A fan is arranged inside the air hole; A protective cover, which is arranged on the top of the air intake shell; The auxiliary pipe extends from the top of the protective cover to the inside of the air intake shell and is used for assisting air intake.

2. The air sample collector according to claim 1, characterized in that: The protective cover comprises: A cover plate, which is arranged on the top of the air intake shell and covers the air intake shell; A plurality of support rods fixed to the bottom of the cover plate; a fixing ring, which is fixed to the bottom of the support rod and placed on the top of the air intake housing; The filter screen is fixedly connected between the fixing ring and the cover plate.

3. The air sample collector according to claim 2, characterized in that: A soft pad is fixed on the bottom of the fixing ring.

4. The air sample collector according to claim 2, characterized in that: The auxiliary pipe is detachably connected to the air intake housing via a connecting structure.

5. The air sample collector according to claim 4, characterized in that: The connection structure comprises: A connecting sleeve, which is connected to the air intake housing through a plurality of connecting rods and is located inside the air hole; The threaded column is fixed to the bottom of the auxiliary pipe and is threadedly connected to the connecting sleeve.

6. The air sample collector according to claim 5, characterized in that: The top of the air intake shell is provided with a plurality of grooves, and the ends of the connecting rods are placed inside the grooves and connected to the air intake shell by screws.

7. The air sample collector according to claim 5, characterized in that: The auxiliary tube comprises: The air inlet pipe is an inverted J-shaped pipe, the longer end of which is located below the cover plate and fixedly connected to the threaded column; A through hole is provided inside the threaded column, and the through hole is communicated with the air intake pipe; A filter plate, which is embedded in the shorter end of the air inlet pipe and located on the top of the cover plate; A fixing sleeve, which is annular and fixed inside the air inlet pipe and on the top of the filter plate; One end of the soft rubber plate is fixed to the top of the fixing sleeve and covers the top of the fixing sleeve.

8. The air sample collector according to claim 7, characterized in that: The connection between the soft rubber plate and the fixing sleeve is smooth.

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