Automatic sampling device for ambient air

Abstract

The utility model discloses an automatic sampling device for ambient air. The automatic sampling device comprises a collecting device main body, a mounting seat is arranged on the collecting device body, a connecting plate is mounted on the mounting seat, a positioning disc is mounted at the other end of the connecting plate, a collecting mechanism and a linkage mechanism are arranged on the positioning disc, the collecting mechanism comprises a collecting tank, a collecting tank support is mounted on the positioning disc, the collecting tank is slidably mounted on the collecting tank support, and a limiting groove is formed in the collecting tank. A bottom sealing plate is slidably mounted in the limiting groove, a connecting rod is mounted on one side of the bottom sealing plate, a front end sealing plate is mounted at the other end of the connecting rod, a screw connecting groove is formed in the other side of the bottom sealing plate, a screw is mounted in the screw connecting groove, and a locking mechanism is arranged on the front end sealing plate. According to the utility model, the motor and the fluted disc drive the screw rod to move, so that the collecting tank automatically extracts air in the environment, and the collecting tank sequentially collects air samples at different times through the linkage mechanism, thereby avoiding the tedious operation that an operator collects the samples once at set intervals.

Description

Technical Field

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

[0002] Air quality testing refers to the testing of air quality. The quality of air quality reflects the concentration of pollutants in the air. Air pollution is a complex phenomenon. The concentration of air pollutants at a specific time and place is affected by many factors. The emission of man-made pollutants from fixed and mobile pollution sources is one of the most important factors affecting air quality, including exhaust from vehicles, ships, aircraft, industrial production emissions, residents' lives and heating, garbage incineration, etc.

[0003] Before testing the air quality of a specific environment, it is necessary to sample the air at that location first. It is necessary to collect air samples at that location at different time periods, which requires multiple operations and is time-consuming. Therefore, an automatic ambient air sampling device is needed to meet people's needs. Utility Model Content

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

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic sampling device for ambient air, comprising a collection device body; a mounting seat is provided on the collection device body, a connecting plate is installed on the mounting seat, a positioning plate is installed at the other end of the connecting plate, and a collection mechanism and a linkage mechanism are provided on the positioning plate;

[0006] Preferably, the collecting mechanism includes a collecting tank, a collecting tank bracket is installed on the positioning plate, the collecting tank is slidably installed on the collecting tank bracket, a limiting groove is provided in the collecting tank, a bottom sealing plate is slidably installed in the limiting groove, a connecting rod is installed on one side of the bottom sealing plate, a front end sealing plate is installed on the other end of the connecting rod, a screw connecting groove is provided on the other side of the bottom sealing plate, a screw is installed in the screw connecting groove, and a locking mechanism is provided on the front end sealing plate.

[0007] Preferably, the linkage mechanism comprises a motor, the motor is mounted on a mounting seat, a gear disc is mounted on the motor, a screw rod set is rotatably mounted on the positioning disc, and the screw rod set is sleeved on the screw rod.

[0008] Preferably, the screw rod set is provided with a gear ring, the gear disc is provided with a plurality of teeth, and the gear ring is meshed with the gear disc.

[0009] Preferably, the screw rod set is provided with threads, and the screw rod set is meshed with the screw rod.

[0010] Preferably, the locking mechanism comprises an L-shaped support plate, which is mounted on the collection jar, on which a plug rod is slidably mounted, on which a plug rod spring is sleeved, and on the front end sealing plate a locking groove is formed, and the plug rod is matched with the locking groove.

[0011] Preferably, one end of the plunger spring is mounted on the L-shaped support plate, and the other end of the plunger spring is mounted on the plunger.

[0012] Preferably, bolt holes are provided on the screw rod connecting groove and the screw rod, and positioning bolts are installed in the bolt holes.

[0013] Preferably, a T-shaped slider is installed on the collection tank, and the T-shaped slider is slidably installed in the collection tank bracket.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] (1) The motor and the gear plate drive the screw to move, so that the collection tank automatically extracts air from the environment, and the linkage mechanism enables the collection tank to collect air samples at different times in sequence, avoiding the tedious operation of the operator to collect samples every once in a while.

[0016] (2) When the front end sealing plate contacts the front end of the collection can, a locking structure is formed by the insertion rod and the locking groove on the front end sealing plate, so that the front and rear ends of the collection can are closed, the air is sealed in the collection can, and the collection can is automatically locked by the locking mechanism, so that the sample collected in the collection can will not leak. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the positioning plate and motor and other structures of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the collection tank and bottom sealing plate and other structures of the utility model;

[0021] Figure 5 A schematic diagram of the structure of the bottom sealing plate and the screw rod of the utility model;

[0022] Figure 6 for Figure 2 A magnified image of point A;

[0023] Figure 7 for Figure 2 Enlarged view of point B.

[0024] In the figure: 1. Collection device body; 2. Mounting seat; 3. Collection mechanism; 4. Linkage mechanism; 5. Locking mechanism; 201. Connecting plate; 202. Positioning plate; 301. Collection tank; 302. Collection tank bracket; 303. Limiting groove; 304. Bottom sealing plate; 305. Connecting rod; 306. Front sealing plate; 307. Screw connecting groove; 308. Screw; 309. Positioning bolt; 310. T-type slider; 401. Motor; 402. Toothed disc; 403. Screw kit; 404. Gear ring; 501. L-type support plate; 502. Insert rod; 503. Insert rod spring; 504. Locking groove. DETAILED DESCRIPTION

[0025] 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.

[0026] Embodiment 1:

[0027] like Figure 1 and Figure 2 As shown, the utility model provides a technical solution: an automatic ambient air sampling device, comprising a collection device body 1; in order to solve the problem that multiple operations are required to collect air samples in different time periods, which is time-consuming, a mounting seat 2 is provided on the collection device body 1, a connecting plate 201 is installed on the mounting seat 2, and a positioning plate 202 is installed at the other end of the connecting plate 201;

[0028] In order to collect the collected sample (air) at the target position, a collecting mechanism 3 is provided on the positioning plate 202, and the collecting mechanism 3 includes a collecting tank 301, a collecting tank bracket 302 is installed on the positioning plate 202, and the collecting tank 301 is slidably installed on the collecting tank bracket 302, a T-shaped slider 310 is installed on the collecting tank 301, and the T-shaped slider 310 is slidably installed in the collecting tank bracket 302, a limiting groove 303 is provided in the collecting tank 301, and a bottom sealing plate 304 is slidably installed in the limiting groove 303, a connecting rod 305 is installed on one side of the bottom sealing plate 304, and a front end sealing plate 306 is installed on the other end of the connecting rod 305, a screw connecting groove 307 is provided on the other side of the bottom sealing plate 304, a screw 308 is installed in the screw connecting groove 307, bolt holes are provided on the screw connecting groove 307 and the screw 308, and positioning bolts 309 are installed in the bolt holes.

[0029] Embodiment 2:

[0030] like Figure 3-Figure 7As shown, in order to control the operation of the collection mechanism, a linkage mechanism 4 is arranged on the positioning disk 202, and the linkage mechanism 4 includes a motor 401, which is mounted on the mounting seat 2, and a toothed disk 402 is mounted on the motor 401, and a screw rod set 403 is rotatably mounted on the positioning disk 202, and the screw rod set 403 is sleeved on the screw rod 308, and a gear ring 404 is provided on the screw rod set 403, and a plurality of teeth are provided on the toothed disk 402, and the gear ring 404 is meshed with the toothed disk 402, and a thread is provided in the screw rod set 403, and the screw rod set 403 is meshed with the screw rod 308. When collecting air at a specific position, the mounting seat 2 is mounted on a mounting bracket such as a tripod, and at this time, the bottom sealing plate 304 in each collection tank 301 is located at the front end of the collection tank 301;

[0031] When collecting starts, the motor 401 drives the toothed disc 402 to rotate, and the teeth on the toothed disc 402 contact and mesh with one of the gear rings 404. Under the meshing action of the toothed disc 402 and the gear ring 404, the screw rod set 403 rotates on the positioning disc 202, and then the screw rod 308 drives the bottom sealing plate 304 to slide along the limiting groove 303 in the collecting tank 301 through the meshing action of the screw rod set 403 and the screw rod 308, so that the bottom sealing plate 304 moves toward the end of the collecting tank 301, and at the same time drives the front sealing plate 306 to move toward the collecting tank 301.

[0032] When the teeth on the toothed disc 402 are separated from the gear ring 404, the bottom sealing plate 304 moves to the end of the collection tank 301 and seals the end. At the same time, the front sealing plate 306 contacts the front end of the collection tank 301, and forms a locking structure through the insertion rod 502 and the locking groove 504 on the front sealing plate 306, so that the front and rear ends of the collection tank 301 are closed, and the air is sealed in the collection tank 301. The toothed disc 402 continues to rotate. When the teeth on the toothed disc 402 contact the next gear ring 404, it will drive the corresponding collection tank 301 to extract air and seal it in the collection tank 301. When the toothed disc 402 rotates one circle, the collection work of all the collection tanks 301 on the positioning disc 202 is completed. Through the linkage mechanism 4, the collection tanks 301 collect air samples at different times in turn, avoiding the tedious operation of the operator to collect samples every once in a while.

[0033] Embodiment 3:

[0034] like Figure 2 and Figure 7In order to make the collection tank 301 automatically closed, a locking mechanism 5 is provided on the front sealing plate 306, and the locking mechanism 5 includes an L-shaped support plate 501, and the L-shaped support plate 501 is installed on the collection tank 301. A plug rod 502 is slidably installed on the L-shaped support plate 501, and a plug rod spring 503 is sleeved on the plug rod 502. A locking groove 504 is opened on the front sealing plate 306, and the plug rod 502 is adapted to the locking groove 504. One end of the plug rod spring 503 is installed on the L-shaped support plate 501, and the plug rod spring 503 is sleeved on the plug rod 502. The other end of the spring 503 is mounted on the insertion rod 502. When the teeth on the toothed disc 402 are separated from the gear ring 404, the bottom sealing plate 304 moves to the end of the collection tank 301 and seals the end. At the same time, the front sealing plate 306 contacts the front end of the collection tank 301, and forms a locking structure through the locking groove 504 on the insertion rod 502 and the front sealing plate 306, so that the front and rear ends of the collection tank 301 are closed, and the air is sealed in the collection tank 301. The remaining features are the same as those in Example 1.

[0035] Working principle:

[0036] When collecting air at a specific position, the mounting base 2 is mounted on a mounting bracket such as a tripod. At this time, the bottom sealing plate 304 in each collection tank 301 is located at the front end of the collection tank 301. When collecting air, the motor 401 drives the toothed disc 402 to rotate, and the teeth on the toothed disc 402 contact and mesh with one of the gear rings 404. Under the meshing action of the toothed disc 402 and the gear ring 404, the screw rod set 403 rotates on the positioning disc 202, and then under the meshing action of the screw rod set 403 and the screw rod 308, the screw rod 308 drives the bottom sealing plate 304 to slide along the limiting groove 303 in the collection tank 301, so that the bottom sealing plate 304 moves toward the end of the collection tank 301, and at the same time drives the front sealing plate 306 to move toward the direction of the collection tank 301. When the teeth on the toothed disc 402 and the gear ring 404 During phase separation, the bottom sealing plate 304 moves to the end of the collection tank 301 and seals the end, while the front sealing plate 306 contacts the front end of the collection tank 301, and forms a locking structure through the insertion rod 502 and the locking groove 504 on the front sealing plate 306, so that the front and rear ends of the collection tank 301 are closed, and the air is sealed in the collection tank 301. The toothed disc 402 continues to rotate. When the teeth on the toothed disc 402 contact the next gear ring 404, it will drive the corresponding collection tank 301 to extract air and seal it in the collection tank 301. When the toothed disc 402 rotates one circle, the collection work of all the collection tanks 301 on the positioning disc 202 is completed. Through the linkage mechanism 4, the collection tank 301 collects air samples at different times in turn, avoiding the tedious operation of the operator to collect samples every once in a while.

[0037] Although 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 automatic ambient air sampling device, comprising a sampling device body (1); characterized in that: The collecting device body (1) is provided with a mounting seat (2), a connecting plate (201) is installed on the mounting seat (2), a positioning plate (202) is installed at the other end of the connecting plate (201), and a collecting mechanism (3) for collecting samples and a linkage mechanism (4) for controlling the operation of the collecting mechanism (3) are provided on the positioning plate (202); The collecting mechanism (3) comprises a collecting tank (301), a collecting tank bracket (302) is installed on the positioning plate (202), the collecting tank (301) is slidably installed on the collecting tank bracket (302), a limiting groove (303) is provided in the collecting tank (301), a bottom sealing plate (304) is slidably installed in the limiting groove (303), a connecting rod (305) is installed on one side of the bottom sealing plate (304), a front end sealing plate (306) is installed on the other end of the connecting rod (305), a screw connecting groove (307) is provided on the other side of the bottom sealing plate (304), and a screw (308) is installed in the screw connecting groove (307); The front end sealing plate (306) is provided with a locking mechanism (5) for locking the collection.

2. The automatic ambient air sampling device according to claim 1, characterized in that: The linkage mechanism (4) comprises a motor (401), the motor (401) is mounted on a mounting seat (2), a toothed disc (402) is mounted on the motor (401), a screw rod set (403) is rotatably mounted on the positioning disc (202), and the screw rod set (403) is sleeved on a screw rod (308).

3. An automatic ambient air sampling device according to claim 2, characterized in that: The screw rod set (403) is provided with a gear ring (404), the gear disc (402) is provided with a plurality of teeth, and the gear ring (404) is meshed with the gear disc (402).

4. The automatic ambient air sampling device according to claim 2, characterized in that: The screw rod set (403) is provided with threads therein, and the screw rod set (403) is meshed with the screw rod (308).

5. The automatic ambient air sampling device according to claim 1, characterized in that: The locking mechanism (5) comprises an L-shaped support plate (501), the L-shaped support plate (501) is mounted on the collection tank (301), a plug rod (502) is slidably mounted on the L-shaped support plate (501), a plug rod spring (503) is sleeved on the plug rod (502), a locking groove (504) is formed on the front end sealing plate (306), and the plug rod (502) is adapted to the locking groove (504).

6. The automatic ambient air sampling device according to claim 5, characterized in that: One end of the plunger spring (503) is mounted on the L-shaped support plate (501), and the other end of the plunger spring (503) is mounted on the plunger (502).

7. The automatic ambient air sampling device according to claim 1, characterized in that: The screw rod connecting groove (307) and the screw rod (308) are both provided with bolt holes, and positioning bolts (309) are installed in the bolt holes.

8. The automatic ambient air sampling device according to claim 1, characterized in that: The collection tank (301) is provided with a T-shaped slider (310), and the T-shaped slider (310) is slidably mounted in the collection tank bracket (302).

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