Air sampling device

Abstract

The utility model relates to an air sampling device which comprises a connecting frame, the front side and the back side of the inner wall of the connecting frame are rotationally connected with the front side and the back side of a contraction frame respectively, a screw is driven to rotate through a servo motor a, the screw rotates to drive a threaded sleeve, an extension plate and an air suction barrel to move upwards, and the height of the air suction barrel is adjusted according to actual requirements. A servo motor b drives a worm and a worm gear to rotate, the worm gear rotates to drive a contraction frame to conduct angle adjustment, angle deviation of the contraction frame drives angle deviation of an air suction cylinder, sample gas at different angles and different heights of a sample point is collected according to actual requirements in cooperation with a lifting assembly, and the problem is solved. Sample gas flushes the inside of the pipeline and the sampling tank, gas generated by flushing is discharged through the gas outlet pipe, and other air is prevented from adhering to the inside of the pipeline and the sampling tank to affect the detection precision.

Description

Technical Field

[0001] The utility model relates to an air sampling device, in particular to an environmental monitoring sampling device at different heights. Background Art

[0002] Environmental detection refers to the process of regularly or irregularly detecting, monitoring, and evaluating various factors such as physical, chemical, and biological factors in the surrounding environment, in order to understand the environmental conditions, discover potential pollution and harmful factors, and provide strong scientific basis for fields such as environmental protection and public health. Environmental detection usually includes the following aspects: atmospheric environment detection, water environment detection, soil environment detection, noise and vibration environment detection, radioactive environment detection. Among them, atmospheric environment detection includes the detection of indicators such as air pollutants, suspended particulate matter, gas concentration, temperature, and humidity.

[0003] Chinese Utility Model Patent Publication No.: CN218645142U; discloses a lifting type environmental air monitoring and sampling device, which includes a support frame and an air sampler body. A servo motor, a lead screw, and a smooth rod are installed inside the support frame. A driving seat is sleeved outside the lead screw. The front surface of the driving seat is fixedly connected with an assembly frame, and the air sampler body is detachably connected inside the assembly frame. This utility model drives the assembly frame to slide longitudinally through lead screw transmission, thereby driving the air sampler body to lift synchronously to sample air at different heights.

[0004] Although the above-mentioned utility model realizes the requirement of sampling air at different heights, there are certain drawbacks in actual use. When the air sampler body is lifted, once the air sampler body is raised, the user cannot operate it. During the sampling process, if an unexpected situation occurs, or some operations need to be carried out temporarily, it cannot be carried out in time. Summary of the Utility Model

[0005] To solve the problems raised in the above background art. The utility model provides an air sampling device.

[0006] To achieve the above object, the utility model provides the following technical solution: An air sampling device, including a connecting frame, the front and back of the inner wall of the connecting frame are respectively rotationally connected to the front and back of a retractable frame, an extension plate is slidably connected to the inner wall of the retractable frame, a moving groove is opened on the front of the retractable frame, a lifting component is arranged inside the moving groove, the upper surface of the extension plate is fixedly connected with an air extraction cylinder, a fan is installed on the right side surface of the air extraction cylinder, the exhaust end of the fan is communicated with one end of an exhaust pipe, the other end of the exhaust pipe is communicated with one end of a connecting pipe, the connecting pipe is installed on the right side surface of the retractable frame, a plurality of air inlet pipes are symmetrically communicated with the back of the connecting pipe, the other end of the air inlet pipe is communicated with the upper surface of a sampling tank, a power box is installed on the front of the connecting frame, an angle adjustment component is arranged inside the power box, and a flap valve is installed on the upper surface of the air inlet pipe.

[0007] Preferably, the lifting component includes a servo motor a installed on the upper surface of the inner wall of the moving groove, the output shaft of the servo motor a is fixedly connected to the top of a screw rod, the lower end of the screw rod is rotationally connected to the lower surface of the inner wall of the moving groove, a threaded sleeve is threadedly connected to the outer surface of the screw rod, and the back of the threaded sleeve is fixedly connected to the front of the extension plate.

[0008] Preferably, a plurality of mounting seats are symmetrically and fixedly connected to the right side surface of the retractable frame, a sampling tank is inserted into the inner wall of the mounting seat, and a stud is threadedly connected to the threaded hole on the right side surface of the mounting seat.

[0009] Preferably, the upper surface of the sampling tank is communicated with one end of an air outlet pipe, and a rubber plug is inserted into the inner wall of the air outlet pipe.

[0010] Preferably, a filter screen is inserted into the socket opened on the upper surface of the air extraction cylinder.

[0011] Preferably, the angle adjustment component includes a worm rotationally connected to the lower surface of the inner wall of the power box, the top of the worm passes through the upper surface of the inner wall of the power box and is fixedly connected to the output shaft of a servo motor b, the servo motor b is installed on the upper surface of the power box, the outer surface of the worm is meshed with the outer surface of a worm gear, and the back of the worm gear is fixedly connected to the front of the retractable frame through a bearing and a rotating shaft installed on the back of the inner wall of the power box.

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

[0013] In the utility model, the servo motor a drives the screw rod to rotate, the rotation of the screw rod drives the threaded sleeve, the extension plate and the air extraction cylinder to move upward, the height of the air extraction cylinder is adjusted according to actual needs, the servo motor b drives the worm and the worm gear to rotate, the rotation of the worm gear drives the retractable frame to perform angle adjustment, the angle deviation of the retractable frame drives the angle deviation of the air extraction cylinder, and the sample gas at different angles and different heights of the sample point is collected in cooperation with the lifting component according to actual needs, so as to solve the above problems.

[0014] In this utility model, the fan extracts the sample gas at the sampling point through the air extraction cylinder. The flap valve on the upper surface of the intake pipe of the designated sampling tank is rotated, and the extracted sample gas is discharged into the sampling tank through the exhaust pipe, connecting pipe and intake pipe. The rubber plug is pulled, and the sample gas flushes the pipeline and the inside of the sampling tank. The gas generated by the flushing is discharged through the outlet pipe, avoiding other air adhering to the pipeline and inside the sampling tank and affecting the detection accuracy. Description of the Drawings

[0015] The drawings are used to provide a further understanding of this utility model, and constitute a part of the specification. Together with the embodiments of this utility model, they are used to explain this utility model, and do not constitute a limitation to this utility model. In the drawings:

[0016] Figure 1 is a schematic structural diagram of this utility model;

[0017] Figure 2 is an internal structural diagram of the air extraction cylinder in this utility model;

[0018] Figure 3 is an internal structural diagram of the power box in this utility model;

[0019] In the figure: 1, connecting frame; 2, retractable frame; 3, moving groove;

[0020] Lifting assembly: 41, servo motor a; 42, screw rod; 43, threaded sleeve;

[0021] 5, extension plate; 6, air extraction cylinder; 7, filter screen; 8, fan; 9, exhaust pipe; 10, connecting pipe; 11, mounting seat; 12, outlet pipe; 13, rubber plug; 14, stud; 15, flap valve; 16, intake pipe; 17, sampling tank; 18, power box;

[0022] Angle adjustment assembly: 191, servo motor b; 192, worm; 193, worm gear. Detailed Embodiments

[0023] Next, the technical solutions in the embodiments of this utility model will be clearly and completely described in conjunction with the drawings in the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, rather than all the embodiments. Based on the embodiments in this utility model, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of this utility model.

[0024] Embodiment

[0025] Please refer to Figures 1-3, the present utility model provides the following technical solutions: An air sampling device, including a connecting frame 1, the front and back inner walls of the connecting frame 1 are respectively rotatably connected to the front and back of a retractable frame 2, an extension plate 5 is slidably connected to the inner wall of the retractable frame 2, a moving groove 3 is opened on the front of the retractable frame 2, a lifting component is arranged inside the moving groove 3, an air extraction cylinder 6 is fixedly connected to the upper surface of the extension plate 5, a blower 8 is installed on the right side of the air extraction cylinder 6, the exhaust end of the blower 8 is communicated with one end of an exhaust pipe 9, the other end of the exhaust pipe 9 is communicated with one end of a connecting pipe 10, the connecting pipe 10 is installed on the right side of the retractable frame 2, a plurality of intake pipes 16 are symmetrically communicated with the back of the connecting pipe 10, the other end of the intake pipe 16 is communicated with the upper surface of a sampling tank 17, a power box 18 is installed on the front of the connecting frame 1, an angle adjustment component is arranged inside the power box 18, and a flap valve 15 is installed on the upper surface of the intake pipe 16.

[0026] Specifically, by setting that the lifting component includes a servo motor a41 installed on the upper surface of the inner wall of the moving groove 3, the output shaft of the servo motor a41 is fixedly connected to the top of a screw rod 42, the lower end of the screw rod 42 is rotatably connected to the lower surface of the inner wall of the moving groove 3, a threaded sleeve 43 is threadedly connected to the outer surface of the screw rod 42, and the back of the threaded sleeve 43 is fixedly connected to the front of the extension plate 5;

[0027] The servo motor a41 drives the screw rod 42 to rotate, and the rotation of the screw rod 42 drives the threaded sleeve 43, the extension plate 5 and the air extraction cylinder 6 to move upward, and the height of the air extraction cylinder 6 is adjusted according to actual needs, and the blower 8 extracts sample gases at different heights of the sampling point through the air extraction cylinder 6;

[0028] The exhaust pipe 9 is a telescopic hose, which does not affect the movement of the air extraction cylinder 6.

[0029] Specifically, by setting that a plurality of mounting seats 11 are symmetrically fixedly connected to the right side of the retractable frame 2, a sampling tank 17 is inserted into the inner wall of the mounting seat 11, and a stud 14 is threadedly connected to the screw hole on the right side of the mounting seat 11;

[0030] Insert the sampling tank 17 into the mounting seat 11, and rotate the stud 14 to fix the sampling tank 17, so as to be applicable to different models of sampling tanks 17.

[0031] Specifically, by setting that the upper surface of the sampling tank 17 is communicated with one end of an outlet pipe 12, and a rubber plug 13 is inserted into the inner wall of the outlet pipe 12;

[0032] Rotate the flap valve 15 on the upper surface of the intake pipe 16 of the designated sampling tank 17. The sampled gas extracted by the blower 8 is discharged into the sampling tank 17 through the exhaust pipe 9, the connecting pipe 10, and the intake pipe 16. Pull the rubber plug 13, and the sampled gas flushes the pipeline and the inside of the sampling tank 17. The gas generated by the flushing is discharged through the outlet pipe 12, preventing other air from adhering inside the pipeline and the sampling tank 17 and affecting the detection accuracy.

[0033] Specifically, a filter screen 7 is inserted into the socket provided on the upper surface of the air extraction cylinder 6.

[0034] The particulate matter and the like contained in the sampled gas are filtered through the inserted filter screen 7.

[0035] Sampled gas containing particulate matter or sampled gas without particulate matter can be extracted according to actual needs.

[0036] Specifically, the angle adjustment assembly is provided to include a worm 192 rotatably connected to the lower surface of the inner wall of the power box 18. The top end of the worm 192 passes through the upper surface of the inner wall of the power box 18 and is fixedly connected to the output shaft of the servo motor b191. The servo motor b191 is installed on the upper surface of the power box 18. The outer surface of the worm 192 meshes with the outer surface of the worm gear 193. The back surface of the worm gear 193 is fixedly connected to the front surface of the retractable frame 2 through a bearing and a rotating shaft installed on the back surface of the inner wall of the power box 18.

[0037] The servo motor b191 drives the worm 192 and the worm gear 193 to rotate. The rotation of the worm gear 193 drives the retractable frame 2 to adjust the angle. The angular deviation of the retractable frame 2 drives the angular deviation of the air extraction cylinder 6, and then samples of different angles and different heights at the sampling point are collected in cooperation with the lifting assembly according to actual requirements.

[0038] The working principle and usage process of the present utility model:

[0039] When the present utility model is in use:

[0040] The servo motor a41 drives the screw rod 42 to rotate. The rotation of the screw rod 42 drives the threaded sleeve 43, the extension plate 5 and the air extraction cylinder 6 to move upward. The height of the air extraction cylinder 6 is adjusted according to actual needs. The servo motor b191 drives the worm 192 and the worm gear 193 to rotate. The rotation of the worm gear 193 drives the contraction frame 2 to adjust the angle. The angular deviation of the contraction frame 2 drives the angular deviation of the air extraction cylinder 6. According to actual needs, the lifting assembly is cooperated to collect the sample gas at different angles and different heights of the sample point. The fan 8 extracts the sample gas of the sample point through the air extraction cylinder 6. The flap valve 15 on the upper surface of the inlet pipe 16 of the specified sampling tank 17 is rotated. The extracted sample gas is discharged into the sampling tank 17 through the exhaust pipe 9, the connecting pipe 10 and the inlet pipe 16. The rubber plug 13 is pulled, and the sample gas flushes the pipeline and the inside of the sampling tank 17. The gas generated by the flushing is discharged through the outlet pipe 12, avoiding other air adhering to the pipeline and the sampling tank 17 and affecting the detection accuracy. By whether the filter screen 7 is inserted, the sample gas containing particulate matter or the sample gas without particulate matter can be extracted.

[0041] The circuits, electronic components and modules involved are all prior arts and can be fully realized by those skilled in the art without further elaboration. The content protected by the present utility model does not involve the improvement of software and methods either.

[0042] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An air sampling device, comprising a connecting frame (1), characterized in that: The front and back surfaces of the inner wall of the connecting frame (1) are respectively rotatably connected to the front and back surfaces of the retractable frame (2). An extension plate (5) is slidably connected to the inner wall of the retractable frame (2). A moving groove (3) is formed in the front surface of the retractable frame (2). A lifting component is arranged inside the moving groove (3). An air extraction cylinder (6) is fixedly connected to the upper surface of the extension plate (5). A blower (8) is installed on the right side surface of the air extraction cylinder (6). The exhaust end of the blower (8) is communicated with one end of an exhaust pipe (9). The other end of the exhaust pipe (9) is communicated with one end of a connecting pipe (10). The connecting pipe (10) is installed on the right side surface of the retractable frame (2). A plurality of air inlet pipes (16) are symmetrically communicated with the back surface of the connecting pipe (10). The other ends of the air inlet pipes (16) are communicated with the upper surface of a sampling tank (17). A power box (18) is installed on the front surface of the connecting frame (1). An angle adjustment component is arranged inside the power box (18). A flap valve (15) is installed on the upper surface of the air inlet pipe (16).

2. The air sampling device according to claim 1, wherein: The lifting component includes a servo motor a (41) installed on the upper surface of the inner wall of the moving groove (3). The output shaft of the servo motor a (41) is fixedly connected to the top end of a screw rod (42). The lower end of the screw rod (42) is rotatably connected to the lower surface of the inner wall of the moving groove (3). A threaded sleeve (43) is threadedly connected to the outer surface of the screw rod (42). The back surface of the threaded sleeve (43) is fixedly connected to the front surface of the extension plate (5).

3. The air sampling device according to claim 1, characterized in that: A plurality of mounting seats (11) are symmetrically and fixedly connected to the right side surface of the retractable frame (2). A sampling tank (17) is inserted into the inner wall of the mounting seat (11). A stud (14) is threadedly connected to the screw hole on the right side surface of the mounting seat (11).

4. The air sampling device according to claim 1, wherein: The upper surface of the sampling tank (17) is communicated with one end of an air outlet pipe (12). A rubber plug (13) is inserted into the inner wall of the air outlet pipe (12).

5. The air sampling device according to claim 1, characterized in that: A filter screen (7) is inserted into the socket formed on the upper surface of the air extraction cylinder (6).

6. The air sampling device according to claim 1, wherein: The angle adjustment component includes a worm (192) rotatably connected to the lower surface of the inner wall of the power box (18). The top end of the worm (192) passes through the upper surface of the inner wall of the power box (18) and is fixedly connected to the output shaft of a servo motor b (191). The servo motor b (191) is installed on the upper surface of the power box (18). The outer surface of the worm (192) is meshed with the outer surface of a worm gear (193). The back surface of the worm gear (193) is fixedly connected to the front surface of the retractable frame (2) through a bearing and a rotating shaft installed on the back surface of the inner wall of the power box (18).

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