An ambient air collector

Abstract

An ambient air sampler includes a suction housing, a piston, a mounting groove, a sealing plate, a collection bottle, a hose, a drive assembly, and a one-way valve. The piston is movably mounted inside the suction housing. The suction housing has a nozzle at its top, communicating with it. Two air holes are formed in two vertical directions at the same distance from the center of the nozzle, extending into the air chamber of the suction housing. A circular mounting groove, concentric with the nozzle, is formed at the lower end of the nozzle. The sealing plate is rotatably mounted inside the mounting groove. A through hole is formed at a non-central part of the sealing plate, the distance between the through hole and the central axis of the nozzle being the same as the distance between the central axes of the air holes and the nozzle. The collection bottle is connected to one of the air holes via a hose. The driving assembly, used to rotate the sealing plate, has its actuating end connected to the sealing plate, while its power input end is located on the piston. The device has both sampling and venting modes, allowing sample gas to be delivered to the collection bottle without frequent movement of the sampling device.

Description

Technical Field

[0001] This utility model relates to the field of air collection technology, specifically to an ambient air collector. Background Technology

[0002] Application number CN202321027366.41 discloses an air sampler. One end of the sampling tube is threadedly connected to a sealing cap. A piston is slidably connected inside the sampling tube. One end of the piston is fixedly connected to a pull rod. One end of the pull rod passes through the side wall of the sealing cap and is slidably connected to the sealing cap. One end of the pull rod is fixedly connected to a pull block. A handle is fixedly connected to the side wall of the sampling tube. An air outlet pipe is fixedly connected to the side wall of one end of the sampling tube. The air outlet pipe is connected to the inside of the sampling tube. One end of the air outlet pipe is fixedly connected to a guide pipe. Two sealing devices are provided inside the guide pipe.

[0003] While the aforementioned existing technology can take samples, it requires frequent movement of the sampling device and delivery of the sample gas into the collection bottle. This operation requires sealing the sample gas before delivering it into the collection bottle, which is quite cumbersome. Utility Model Content

[0004] The purpose of this invention is to provide an ambient air collector to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: An ambient air collector includes an extraction housing, a piston, a mounting slot, a sealing plate, a collection bottle, a hose, a drive assembly, and a one-way valve. The piston is movably mounted inside the extraction housing, wherein: The upper part of the suction shell is provided with an air nozzle connected to it. Two air holes are opened in two vertical directions at the same distance from the center of the air nozzle. The air holes penetrate into the air cavity of the suction shell. The lower end of the air nozzle is provided with a circular mounting groove concentric with the air nozzle. The sealing plate is rotatably installed in the mounting groove. A through hole is opened at the non-center part of the sealing plate. The distance between the through hole and the central axis of the air nozzle is the same as the distance between the central axis of the air hole and the central axis of the air nozzle. The collection bottle is connected to one of the air holes through a hose. The actuating end of the drive assembly used to rotate the sealing plate is connected to the sealing plate, while the power input end is located on the piston.

[0006] Preferably, the drive assembly includes an inner rod, an outer rod, and a rotating handle. One end of the inner rod is disposed on a sealing plate, and the other end is movably fitted inside the outer rod via a keyway. The outer rod is rotatably mounted on the piston and one end passes through the piston. The rotating handle is rotatably mounted on the outer circular surface of the piston end and is fixedly sleeved with the outer rod.

[0007] Preferably, the piston end outer circular surface array is provided with a baffle portion.

[0008] Preferably, the hose is connected to the collection bottle via a one-way valve.

[0009] Compared with the prior art, the beneficial effects of this utility model are: This utility model discloses an ambient air sampler. During operation, it features air vents and a through-hole at a non-central location on a sealing plate. A drive assembly rotates the sealing plate, altering the air path and enabling both sampling and venting modes. This allows for the delivery of sample gas to the collection bottle without frequent movement of the sampling device. A one-way valve allows for the discharge of gas from the tubing, preventing contamination of the sampled gas. Attached Figure Description

[0010] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 This is a three-dimensional internal schematic diagram of the present invention; Figure 3 This is a three-dimensional internal schematic diagram of the present invention after removing the sealing plate, inner rod, and outer rod; Figure 4 for Figure 2 Schematic diagram of section A in the middle; Figure 5 for Figure 2 Schematic diagram of section B; Figure 6 This is a three-dimensional schematic diagram of the piston in this utility model.

[0011] In the diagram: 1. Suction housing, 2. Piston, 3. Mounting slot, 4. Sealing plate, 5. Collection bottle, 6. Hoses, 7. Drive assembly, 8. One-way valve, 10. Air nozzle, 11. Air hole, 21. Barrier, 41. Through hole, 71. Inner rod, 72. Outer rod, 73. Rotating handle. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] Example: Please see Figures 1 to 6 This utility model provides a technical solution: An ambient air collector includes an extraction housing 1, a piston 2, a mounting groove 3, a sealing plate 4, a collection bottle 5, a hose 6, a drive assembly 7, and a one-way valve 8. The piston 2 is movably installed in an air chamber inside the extraction housing 1, and the piston 2 moves vertically within the extraction housing 1. An air nozzle 10 is provided above the suction housing 1 and communicates with it. Two air holes 11 are opened in two vertical directions at the same distance from the center of the air nozzle 10. The air holes 11 penetrate into the air cavity of the suction housing 1. One of the two air holes 11 is used for air intake and the other for air exhaust. The two air holes 11 are equidistant from the central axis of the air nozzle 10. A circular mounting groove 3 concentric with the air nozzle 10 is opened at the lower end of the air nozzle 10. A sealing plate 4 is rotatably installed inside the mounting groove 3. A through hole 41 is opened at the non-center part of the sealing plate 4. The distance between the through hole 41 and the central axis of the air nozzle 10 is... The distance from the central axis of the air hole 11 and the air nozzle 10 is the same. When the sealing plate 4 is rotated so that the through hole 41 revolves around the central axis of the air nozzle 10, it can be concentrically connected with the two air holes 11 respectively. When the through hole 41 is connected with one of the air holes 11, the sealing plate 4 can cover the other air hole 11, so that only one air hole 11 is in the connected state. With this setting, the air path can be changed by simply rotating the sealing plate 4. Rotating the sealing plate 4 can make the through hole 41 connect with the two air holes 11 respectively. The collection bottle 5 is connected to one of the air holes 11 through the hose 6. The actuating end of the drive assembly 7, which drives the sealing plate 4 to rotate, is connected to the sealing plate 4, while the power input end is located on the piston 2.

[0014] In a preferred embodiment, the drive assembly 7 includes an inner rod 71, an outer rod 72, and a rotating handle 73. One end of the inner rod 71 is mounted on the sealing plate 4, and the other end is movably fitted inside the outer rod 72 via a keyway. The outer rod 72 is rotatably mounted on the piston 2, with one end passing through the piston 2. The rotating handle 73 is rotatably mounted on the outer circumferential surface of the piston 2 and is fixedly sleeved with the outer rod 72. Rotating the rotating handle 73 can drive the inner rod 71 to rotate via the outer rod 72, thereby driving the sealing plate 4 to rotate. This allows the through hole 41 to connect with the two air holes 11, thus changing the airflow path. With this configuration, rotating the rotating handle 73 will not drive the piston 2 to rotate, thereby ensuring the sealing performance of the piston 2.

[0015] In a preferred embodiment, the outer circular surface of the piston 2 end is provided with two baffles 21. By providing the baffles 21, when one of the connecting holes 33 is connected to one of the air holes 3, the rotating handle 73 will contact one of the baffles 21, at which point the baffle 21 functions as a positioning and limiting element. Similarly, when the other connecting hole 33 is connected to the other air hole 3, the rotating handle 73 will contact the other baffle 21, again serving the same positioning and limiting function. This arrangement of the baffles 21 facilitates the switching of the air path.

[0016] In a preferred embodiment, the hose 6 is connected to the collection bottle 5 via a one-way valve 8. By setting the one-way valve 8, the sampled gas can be collected, and the sampled gas can be injected into the hose 6, thereby discharging the gas stored in the hose 6 and preventing the gas in the hose 6 from mixing with the sampled gas.

[0017] The working principle of this utility model: In use, first place the device at the detection height. Rotating the handle 73, via the outer rod 72, rotates the inner rod 71, which in turn rotates the sealing plate 4. This connects the through hole 41 with the air hole 11, which is not connected to the hose 6. Then, pull the piston 2 to fill the suction shell 1 with sampling gas. Rotating the handle 73 again, via the outer rod 72, rotates the inner rod 71, which in turn rotates the sealing plate 4. This connects the through hole 41 with the air hole 11 connected to the hose 6, and pushes the piston 2 to discharge the collected sampling gas from the suction shell 1 into the hose 6. Repeating this operation discharges the gas stored in the hose 6. When the hose 6 is full of sampling gas, insert the hose 6 into the collection bottle 5 and repeat the process of collecting and discharging the sampling gas to collect it into the collection bottle 5. Repeating this operation allows for multiple samplings by simply replacing the collection bottle 5.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An ambient air collector, comprising an air extraction housing (1), a piston (2), a mounting groove (3), a sealing plate (4), a collection bottle (5), a hose (6), a drive assembly (7), and a one-way valve (8), wherein the piston (2) is movably mounted inside the air extraction housing (1), characterized in that: The suction shell (1) is provided with a nozzle (10) connected to it. Two air holes (11) are opened in two vertical directions at the same distance from the center of the nozzle (10). The air holes (11) penetrate into the air cavity of the suction shell (1). A circular mounting groove (3) concentric with the nozzle (10) is opened at the lower end of the nozzle (10). The sealing plate (4) is rotatably installed inside the mounting groove (3). A through hole (41) is opened at the non-center of the sealing plate (4). The distance between the through hole (41) and the central axis of the nozzle (10) is the same as the distance between the central axis of the air hole (11) and the nozzle (10). The collection bottle (5) is connected to one of the air holes (11) through a hose (6). The actuating end of the drive assembly (7) used to rotate the sealing plate (4) is connected to the sealing plate (4), while the power input end is located on the piston (2).

2. The air sampler of claim 1, wherein: The drive assembly (7) includes an inner rod (71), an outer rod (72), and a rotating handle (73). One end of the inner rod (71) is located on the sealing plate (4), and the other end is movably fitted inside the outer rod (72) through a keyway. The outer rod (72) is rotatably mounted on the piston (2) and one end passes through the piston (2). The rotating handle (73) is rotatably mounted on the outer circular surface of the piston (2) end and is fixedly sleeved with the outer rod (72).

3. The air sampler of claim 1, wherein: The piston (2) has a grid section (21) arranged on the outer circular surface of its end.

4. The air sampler of claim 3, wherein: The hose (6) is connected to the collection bottle (5) via a one-way valve (8).

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