Air sample sampling device

Abstract

The utility model relates to the technical field of sampling devices, in particular to an air sample sampling device which comprises a sampler and an air inlet pipe, and a filter screen is arranged at a pipe orifice of the air inlet pipe through a mounting component; the installation assembly comprises an installation cylinder arranged outside the air inlet pipe in a covering mode, a cavity with an upper opening and a lower opening is formed in the installation cylinder, the outer side wall of the installation cylinder is sleeved with a top plate and a supporting plate in parallel, a plurality of installation holes are formed in the side wall of the installation cylinder, and a plurality of connecting holes corresponding to the installation holes are formed in the side wall of the air inlet pipe. The supporting plate is provided with a plurality of telescopic strips capable of stretching out and drawing back in the corresponding mounting holes and the connecting holes, and telescopic pieces used for controlling the telescopic strips to stretch out and draw back are further arranged between the top plate and the supporting plate. Through the arrangement of the filter screen and the mounting cylinder, sundries such as fallen leaves can be filtered by the filter screen and cannot enter the air inlet pipe, so that the sampler is prevented from being interfered in the air sampling process.

Description

Technical Field

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

[0002] An air sampler is an auxiliary instrument that can collect or extract gaseous pollutants in the detected ambient air. When used in conjunction with instruments such as a gas chromatograph, it can detect the concentration of gaseous pollutants in the detected ambient air. An air sampler is an indispensable instrument in the construction of an eco-city. It can evaluate and monitor the effects of air governance, making it easier for people to formulate subsequent development policies.

[0003] For example, the patent with the announcement number CN218481283U discloses an air sampler that is easy to clean the air intake pipe, including an air sampler, the left side of the top of the air sampler is connected to the air intake pipe, a fixing ring is fixedly connected to the surface of the air intake pipe, a fixing pipe is sleeved on the surface of the air intake pipe, a filter plate is transversely arranged inside the fixing pipe, a cleaning rod is fixedly connected to the bottom of the filter plate, a cleaning brush is fixedly connected to the surface of the cleaning rod, and a limiting ring groove is provided on the top of the fixing ring for use with the fixing pipe. Although the air sampler that is easy to clean the air intake pipe solves the problem that the existing air sampler needs to clean the air intake pipe frequently, which is time-consuming and laborious, and requires a cleaning tool to clean, when the air sampler is actually used, debris such as leaves are often sucked into the air intake pipe, causing interference in the sampling process, so it needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide an air sample sampling device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An air sample sampling device comprises a sampler and an air inlet pipe, wherein a filter screen is provided at the pipe mouth of the air inlet pipe through a mounting assembly; the mounting assembly comprises a mounting cylinder which is covered outside the air inlet pipe, wherein a cavity with upper and lower openings is provided in the mounting cylinder, a top plate and a support plate are provided in parallel on the outer wall of the mounting cylinder, a plurality of mounting holes are provided on the side wall of the mounting cylinder, a plurality of connecting holes corresponding to the mounting holes are provided on the side wall of the air inlet pipe, a plurality of telescopic strips which can be extended and retracted in the corresponding mounting holes and connecting holes are provided on the support plate, and a telescopic member for controlling the extension and retraction of the telescopic strips is also provided between the top plate and the support plate.

[0007] Further, a tooth groove is provided on one side wall of the telescopic strip; the telescopic member includes a gear rotatably provided between the top plate and the support plate, the gear is engaged with the corresponding tooth groove, the telescopic member further includes a toothed ring rotatably provided between the top plate and the support plate, the toothed ring is engaged with the gear, and rotating the toothed ring is used to drive the gear to rotate, driving a plurality of telescopic strips to synchronously expand and contract.

[0008] Further, a T-shaped block is provided along the length direction at the lower end of the telescopic strip, and a T-shaped sliding groove for the T-shaped block to slide into is provided on the support plate corresponding to the T-shaped block.

[0009] Further, a safety shell is provided between the top plate and the support plate, an installation cavity with both ends open is provided in the safety shell, and a movable shell that can rotate is provided in the installation cavity, and the movable shell is used to control the closing or opening of the installation cavity.

[0010] Further, a lapping ring is provided at the upper opening of the cavity, a plurality of positioning rods are evenly distributed on the lower side wall of the lapping ring, and positioning holes for the corresponding positioning rods to extend into are provided on the end face of the pipe orifice of the air inlet pipe.

[0011] Further, friction lines are provided on the outer side wall of the toothed ring.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. In the present utility model, through the arrangement of the filter screen and the installation cylinder, sundries such as fallen leaves will be filtered by the filter screen and cannot enter the air inlet pipe, thereby avoiding interference during the air sampling process of the sampler.

[0014] 2. In the present utility model, through the arrangement of the installation holes, connection holes, telescopic strips and telescopic members, the installation cylinder together with the filter screen can be fixed at the pipe orifice of the air inlet pipe, and the installation cylinder can be disassembled and assembled more conveniently through the telescopic members, which is relatively convenient to use. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the overall structure of an air sample sampling device in the present utility model.

[0016] Figure 2 It is a top view schematic diagram of the installation cylinder in the present utility model.

[0017] Figure 3 It is a schematic diagram of the structure of the installation cylinder and the telescopic member in the present utility model.

[0018] Figure 4 It is a schematic diagram of the structure of the installation cylinder and the telescopic member in the present utility model.

[0019] Figure 5 It is an exploded schematic diagram of the installation cylinder and the telescopic member in the present utility model.

[0020] The meanings of the reference numerals in the figure are as follows:

[0021] 100, Sampler; 101, Intake pipe; 102, Positioning hole; 110, Installation cylinder; 111, Positioning rod; 200, Filter net; 201, Through hole; 210, Top plate; 220, Clamping block; 300, Telescopic strip; 301, T-shaped clamping block; 310, Support plate; 311, T-shaped sliding groove; 320, Tooth ring; 330, Insurance shell; 331, Installation cavity; 340, Moving shell; 400, Installation hole; 401, Connection hole; 410, Gear; 411, Rotating shaft; 430, Sliding ring; 431, Sliding groove; 440, Lapping ring. Detailed implementation manner

[0022] To further understand the content of the present utility model, the present utility model will be described in detail in combination with the drawings and embodiments. It should be understood that the embodiments are only for explaining the present utility model and not for limiting it.

[0023] The following combines the attached Figures 1 - 5 A further detailed description will be given to this embodiment.

[0024] Please refer to Figures 1 - 3 As shown, an air sample sampling device in this embodiment includes a sampler 100 and an intake pipe 101. A filter net 200 is provided at the pipe orifice of the intake pipe 101 through an installation assembly; the installation assembly includes an installation cylinder 110 sleeved outside the intake pipe 101. The installation cylinder 110 is provided with a cavity with upper and lower openings. A top plate 210 and a support plate 310 are parallelly sleeved on the outer side wall of the installation cylinder 110. A plurality of installation holes 400 are provided on the side wall of the installation cylinder 110, and a plurality of connection holes 401 corresponding to the installation holes 400 are provided on the side wall of the intake pipe 101. A plurality of telescopic strips 300 that can be telescoped in the corresponding installation holes 400 and connection holes 401 are provided on the support plate 310. An expansion member for controlling the telescopic strips 300 to expand and contract is also provided between the top plate 210 and the support plate 310.

[0025] In actual use of this embodiment, a lapping ring 440 is provided at the upper opening of the cavity. The lapping ring 440 is used to abut the filter net 200 against the pipe orifice of the intake pipe 101; among them, a plurality of positioning rods 111 are evenly distributed on the lower side wall of the lapping ring 440. Positioning holes 102 for the corresponding positioning rods 111 to extend into are provided on the end face of the pipe orifice of the intake pipe 101. Thus, the positioning rods 111 penetrate through the filter net 200 and extend into the corresponding positioning holes 102 to position the installation cylinder 110, so that the installation holes 400 correspond to the corresponding connection holes 401, thereby enabling the telescopic strips 300 to expand and contract between the two.

[0026] Among them, through the setting of the filter net 200, it can filter the air entering the air inlet pipe 101, and can prevent sundries such as leaves from entering the sampler 100 through the air inlet pipe 101, resulting in interference in the sampling process;

[0027] In this embodiment, the edge of the filter net 200 is provided with a plurality of through holes 201 for the positioning rods 111 to pass through corresponding to the positioning holes 102.

[0028] When this embodiment is actually used, first place the filter net 200 at the pipe orifice of the air inlet pipe 101, and then align the positioning rods 111 on the installation cylinder 110 with the through holes 201 and the positioning holes 102, and sleeve the installation cylinder 110 on the pipe orifice of the air inlet pipe 101 by pressing. At this time, control the telescopic strip 300 to extend into the corresponding installation hole 400 and connection hole 401 through the telescopic member, so as to fix the installation cylinder 110 at the pipe orifice of the air inlet pipe 101;

[0029] In this embodiment, through the setting of the telescopic member, the user can perform telescopic operations on all the telescopic strips 300 at the same time, making the disassembly and assembly of the installation cylinder 110 more convenient.

[0030] Among them, the telescopic member is installed between the top plate 210 and the support plate 310.

[0031] Please refer to Figures 3 - 5 As shown, in this embodiment, a tooth groove is provided on one side wall of the telescopic strip 300; the telescopic member includes a gear 410 rotatably arranged between the top plate 210 and the support plate 310, the gear 410 is matched with the corresponding tooth groove, the telescopic member further includes a toothed ring 320 rotatably arranged between the top plate 210 and the support plate 310, the toothed ring 320 is meshed with the gear 410, and rotating the toothed ring 320 is used to drive the gear 410 to rotate, driving a plurality of telescopic strips 300 to expand and contract synchronously.

[0032] Please refer to Figures 3 - 5 As shown, in this embodiment, a T-shaped block 301 is provided along the length direction at the lower end of the telescopic strip 300, and a T-shaped sliding groove 311 for the T-shaped block 301 to extend into is provided on the support plate 310. The T-shaped block 301 can move in the T-shaped sliding groove 311. Thus, the telescopic strip 300 moves more smoothly along the T-shaped sliding groove 311, and at the same time, the expansion and contraction of the telescopic strip 300 can be restricted to prevent the telescopic strip 300 from sliding out of the connection hole 401.

[0033] In this embodiment, the gear 410 is rotatably installed between the top plate 210 and the support plate 310 through a rotating shaft 411, the toothed ring 320 is lapped above the telescopic strip 300 and is located outside the gear 410, and through the cooperation with the gear 410, the toothed ring 320 is rotatably installed between the top plate 210 and the support plate 310.

[0034] In actual use of this embodiment, after the installation tube 110 is installed, the telescopic strip 300 can be driven to extend into or withdraw from the installation hole 400 and the connecting hole 401 by rotating the gear ring 320, thereby realizing rapid fixation or cancellation of the installation tube 110.

[0035] During installation of this embodiment, the opening of the T-shaped slide groove 311 faces the inner side of the support plate 310, so that the T-shaped block 301 of the telescopic strip 300 slides into the T-shaped slide groove 311, and then the support plate 310 is fixed outside the installation tube 110, so that the telescopic strip 300 can be installed between the top plate 210 and the support plate 310;

[0036] See also Figures 2 - 4 As shown, in this embodiment, a safety shell 330 is provided between the top plate 210 and the support plate 310, and a mounting cavity 331 with openings at both ends is provided in the safety shell 330. A rotatable movable shell 340 is provided in the mounting cavity 331, and the movable shell 340 is movable to control the closing or opening of the mounting cavity 331.

[0037] In this embodiment, the safety shell 330 is fan-shaped, and an installation cavity 331 with openings at both ends is provided inside the safety shell 330. The movable shell 340 is also fan-shaped, and both ends of the movable shell 340 extend into the installation cavity 331. Therefore, in actual use, the movable shell 340 is moved into the installation cavity 331, so that the toothed ring 320 outside the safety shell 330 can be exposed, so that the user can extend and retract the telescopic strip 300 through this part; the movable shell 340 is moved out of the installation cavity 331, so that the toothed ring 320 outside the safety shell 330 can be hidden and protected to prevent the user from accidentally driving the toothed ring 320.

[0038] In actual use of this embodiment, the side walls opposite to the installation cavity 331 are provided with sliding grooves 431 along their circumference, and the upper and lower ends of the movable shell 340 are bent to form sliding rings 430 that extend into the corresponding sliding grooves 431 and slide. Through the arrangement of the sliding rings 430 and the sliding grooves 431, the movable shell 340 can rotate more stably in the safety shell 330, which is convenient for the user to operate the gear ring 320 in the installation cavity 331.

[0039] In actual use, in order to facilitate the user to drive the movable shell 340 to move in the installation cavity 331, a block 220 is provided on the outer wall of one end of the movable shell 340. Moving the block 220 can better move the rotating movable shell 340 in the installation cavity 331, which is more convenient in actual use.

[0040] See also Figure 3 As shown, in this embodiment, friction lines are provided on the outer side wall of the gear ring 320 .

[0041] In actual use, the friction pattern of this embodiment makes it more convenient and labor-saving to rotate the gear ring 320.

[0042] Working principle: Align the positioning rod 111 on the overlapping ring 440 with the through hole 201 and the positioning hole 102, press the installation cylinder 110 so that it abuts the filter net 200 against the pipe orifice of the air inlet pipe 101. Then rotate the toothed ring 320 so that the telescopic strip 300 passes through the installation hole 400 and the connection hole 401 and extends into the air inlet pipe 101 to fix the installation cylinder 110. Finally, push the latch 220 to turn the moving shell 340 out of the installation cavity 331, thereby closing the installation cavity 331 and hiding and protecting the toothed ring 320 outside the safety shell 330 to avoid accidental touch.

[0043] When it is necessary to remove the installation cylinder 110, first push the latch 220 to turn the moving shell 340 into the installation cavity 331, thereby opening the installation cavity 331 and exposing the toothed ring 320 outside the safety shell 330. Then rotate the toothed ring 320 so that the telescopic strip 300 exits outside the connection hole 401, thereby releasing the fixation of the installation cylinder 110. Finally, pick up the installation cylinder 110 upward to achieve the removal of the installation cylinder 110 and the filter net 200.

Claims

1. An air sample sampling device, comprising a sampler (100) and an air inlet pipe (101), characterized in that: A filter screen (200) is provided at the pipe mouth of the air intake pipe (101) through a mounting assembly; the mounting assembly comprises a mounting cylinder (110) which is covered and arranged outside the air intake pipe (101); a cavity with upper and lower openings is provided inside the mounting cylinder (110); a top plate (210) and a support plate (310) are sleeved in parallel on the outer wall of the mounting cylinder (110); a plurality of mounting holes (400) are provided on the side wall of the mounting cylinder (110); a plurality of connecting holes (401) corresponding to the mounting holes (400) are provided on the side wall of the air intake pipe (101); a plurality of telescopic strips (300) which can be telescoped in the corresponding mounting holes (400) and the connecting holes (401) are provided on the support plate (310); and a telescopic member for controlling the telescopic strips (300) to telescope is further provided between the top plate (210) and the support plate (310).

2. An air sample sampling device according to claim 1, characterized in that: A tooth groove is provided on one side wall of the telescopic strip (300); the telescopic member includes a gear (410) rotatably arranged between the top plate (210) and the supporting plate (310), the gear (410) matches with the corresponding tooth groove, and the telescopic member also includes a gear ring (320) rotatably arranged between the top plate (210) and the supporting plate (310), the gear ring (320) meshes with the gear (410), and the rotating gear ring (320 is used to drive the gear (410) to rotate, thereby driving the multiple telescopic strips (300) to extend and retract synchronously.

3. An air sample sampling device according to claim 2, characterized in that: A T-shaped block (301) is provided at the lower end of the telescopic bar (300) along its length direction, and a T-shaped slot (311) for the T-shaped block (301) to slide into is provided on the support plate (310) corresponding to the T-shaped block (301).

4. The air sample sampling device according to claim 2, characterized in that: A safety shell (330) is provided between the top plate (210) and the supporting plate (310), a mounting cavity (331) with openings at both ends is provided in the safety shell (330), a rotatable movable shell (340) is provided in the mounting cavity (331), and the movable shell (340) is movable to control the closing or opening of the mounting cavity (331).

5. The air sample sampling device according to claim 3, characterized in that: A lap ring (440) is provided at the upper opening of the cavity, a plurality of positioning rods (111) are evenly distributed on the lower side wall of the lap ring (440), and a positioning hole (102) for the corresponding positioning rod (111) to extend into is provided on the end surface of the pipe opening of the air inlet pipe (101).

6. The air sample sampling device according to claim 2, characterized in that: The outer side wall of the gear ring (320) is provided with friction lines.

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