Ambient air sampling device

Abstract

The utility model discloses an ambient air sampling device, relates to ambient air sampling technical field, a mobile assembly includes auxiliary pedal and locking hook, the front part of auxiliary pedal is rotatingly connected to the bottom behind the support leg at the front part of structural casing, the bottom in front of the support leg at the rear part of structural casing is rotatingly connected with main pedal, and the locking hook is fixed on the main pedal. Universal wheels are rotationally connected to the middle of the lower surface of the auxiliary pedal and the front end of the bottom of the main pedal. According to the ambient air sampling device disclosed by the utility model, when the sampling device is moved, the main pedal is treaded by a foot, the locking hook can hook the pin on the auxiliary pedal, at the moment, one side of the air sampling device is tilted to enable the universal wheels to touch the ground, and the other side of the air sampling device is operated by the same method; the locking hook is shifted forwards to be separated from the pin on the auxiliary pedal, the air sampling device automatically falls due to gravity to jack up the moving assembly, and the air sampling device can be fixed after the two sides are operated.

Description

Technical Field

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

[0002] Ambient air sampling devices are used to collect and analyze air pollutants, helping to monitor environmental quality, assess health risks, and conduct scientific research. By extracting air samples and capturing particulate matter and gaseous pollutants, they provide real-time, quantitative data, enabling governments, research institutions, and the public to understand air pollution levels in specific areas. These devices play a vital role in environmental protection, pollution control, and health surveys, providing the necessary scientific basis for formulating environmental policies and improving public health.

[0003] Chinese patent document CN112903380A discloses an ambient air sampling device and a sampling method thereof, comprising a body, a collector and a constant temperature box, wherein a sampling pump is provided on the upper part of the body, a connecting tube is provided on one side of the sampling pump, a battery is provided on the bottom part of the body, an operation panel is provided on one side of the body, a power switch is provided on the operation panel, a charging indicator light is provided on one side of the power switch, a charging interface is provided below the operation panel, and a communication interface is provided on one side of the charging interface. The beneficial effects are as follows: the present invention has a novel structure and is easy to operate. By providing a fastening spring and a fastening plate, the fastening plate can be fixed in the placement slot 1 and the placement slot 2 through the fastening spring. Then, when placing the collection bottle and the solution bottle, the collection bottle and the solution bottle squeeze the fastening plate, causing the fastening spring to exert a reaction force on the fastening plate through the fastening plate, thereby fixing the fastening plate, making it easy to use and ensuring the practicality of the device.

[0004] The existing technology has the following problems:

[0005] When performing air sampling, the collection location needs to be changed frequently. However, the mobility of the air sampling device is poor and it is not convenient to move. In addition, during air sampling, the air composition at different heights is different, and it is often necessary to collect air at multiple heights at the same location. However, the height of the collection bucket is limited, and the collected samples have deviations. Utility Model Content

[0006] The utility model provides an ambient air sampling device to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] An ambient air sampling device comprises a structural box, an air storage tank is fixedly mounted on the bottom of the inner cavity of the structural box, an air pump is fixedly mounted on the right side of the upper surface of the air storage tank, an input end of the air pump is fixedly connected to a pipeline, a console is fixedly connected to the front of the upper surface of the structural box, a lifting assembly is fixedly connected to the middle of the upper surface of the structural box, three air collecting hoppers are fixedly mounted on the left side of the top of the lifting assembly, an outer wall of the air collecting hopper is fixedly connected to the top of the pipeline, and symmetrically distributed moving assemblies are rotatably connected to the left and right sides of the structural box.

[0009] Preferably: the moving assembly includes a secondary pedal and a locking hook, the front of the secondary pedal is rotatably connected to the bottom behind the front leg of the structural box, the bottom in front of the rear leg of the structural box is rotatably connected to the main pedal, the middle of the lower surface of the secondary pedal and the front end of the bottom of the main pedal are rotatably connected to universal wheels, the main pedal and the secondary pedal are fixedly connected to pins at one end away from the structural box, and the top of the leg at the rear of the structural box and the middle of the leg at the front of the structural box are fixedly connected to fixing assemblies.

[0010] Preferably, the front side of the main pedal away from the air tank is fixedly connected to a limit block, and the front side of the bottom of the main pedal is overlapped with the rear side of the top of the auxiliary pedal.

[0011] Preferably: the outer surface of the pin located on the main pedal is rotatably connected to the middle part of the left side of the locking hook, the inner surface of the bottom of the locking hook overlaps the outer surface of the pin located on the auxiliary pedal, and the front side of the locking hook close to the bottom is fixedly connected to a first spring, the front end of the first spring is fixedly connected to a limiting slot, and the side of the limiting slot close to the air tank is fixedly connected to the front side of the main pedal away from the air tank.

[0012] Preferably: the fixing assembly includes a base plate, and a stabilizing bridge symmetrically distributed on the left and right is fixedly connected to the side of the upper surface of the base plate close to the pin, and the top of the opposite side of the stabilizing bridge is rotatably connected to a pressure plate, and the side of the pressure plate away from the locking hook is fixedly connected to a second spring, and the bottom of the second spring is fixedly connected to the middle part of the upper surface of the base plate, and the side of the lower surface of the pressure plate close to the locking hook is fixedly connected to a limiting pin, and the lower surface of the limiting pin is inclined toward the side of the base plate, and the side of the base plate away from the limiting pin is fixedly connected to the side opposite to the support leg of the structural box, and a slot hole is provided in the middle of the front of the main pedal and the back of the auxiliary pedal, and the inner diameter of the slot hole is larger than the diameter of the limiting pin.

[0013] Preferably: the lifting assembly includes a motor, the bottom of the motor is fixedly connected to the middle part of the upper surface of the structural box, the output end of the motor is fixedly connected to a screw, the bottom of the screw is threadedly connected to a fixing plate, the left and right sides of the upper surface of the fixing plate are commonly fixedly connected to a second rod, the left and right sides of the second rod are provided with rectangular wheel grooves, the middle parts of the two wheel grooves are rotatably connected to gears, the outer surfaces of the two gears are engaged with two racks, the opposite sides of the two racks located on the inner side are commonly fixedly connected to a third rod, the sides of the two racks located on the outer side that are away from each other are commonly fixedly connected to the first rod, the bottom of the first rod is fixedly connected to the upper surface of the structural box, and the screw is located on the inner side of the third rod.

[0014] Due to the adoption of the above technical solution, the present invention has achieved the following technical advancements compared to the prior art:

[0015] 1. The utility model provides an ambient air sampling device, which adds movable components on the left and right sides of the structural box, connects the main pedal and the auxiliary pedal in the middle of the left and right legs of the box through hinges, and installs universal wheels under the legs. The state conversion between movement and stillness is controlled by the cooperation of locking hooks.

[0016] 1. The utility model provides an ambient air sampling device, in which a lifting assembly is installed on the top of a structural box, a motor is placed inside the assembly, and an air collecting hopper is installed on the top of three rods respectively. The rotation of the motor drives the rotation of the screw, and the second rod performs telescopic movement. The two gears on the second rod push the third rod to move synchronously through mutually meshing racks, thereby sending the air collecting hopper to different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of the ambient air sampling device of the present utility model;

[0018] Figure 2 This is a schematic diagram of the coordination structure of the mobile components of the present utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the mobile component of the utility model;

[0020] Figure 4 This is a schematic diagram of the locking assembly structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the fixing assembly structure of the utility model;

[0022] Figure 6 This is a schematic diagram of the lifting component structure of the utility model.

[0023] In the figure: 1. Structural box; 2. Moving component; 3. Gas storage tank; 4. Pipeline; 5. Gas collecting hopper; 6. Control console; 7. Lifting component; 8. Air pump; 21. Universal wheel; 22. Auxiliary pedal; 23. Pin; 24. Main pedal; 25. Locking hook; 26. Limiting groove; 27. First spring; 28. Limiting block; 29. ​​Fixed component; 291. Bottom plate; 292. Second spring; 293. Pressure plate; 294. Stabilizing bridge; 295. Limiting pin; 296. Slot; 71. Motor; 72. First rod; 73. Fixed plate; 74. Second rod; 75. Third rod; 76. Screw; 77. Rack; 78. Gear; 79. Wheel groove. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] like Figure 1 As shown, an environmental air sampling device includes a structural box 1, an air storage tank 3 is fixedly installed at the bottom of the inner cavity of the structural box 1, an air pump 8 is fixedly installed on the right side of the upper surface of the air storage tank 3, the input end of the air pump 8 is fixedly connected to a pipeline 4, the front part of the upper surface of the structural box 1 is fixedly connected to a console 6, the middle part of the upper surface of the structural box 1 is fixedly connected to a lifting component 7, three air collecting hoppers 5 are fixedly installed on the left side of the top of the lifting component 7, the outer wall of the air collecting hopper 5 is fixedly connected to the top of the pipeline 4, and the left and right sides of the structural box 1 are rotatably connected with symmetrically distributed moving components 2.

[0026] It should be noted that after arriving at the collection site, the mobile component 2 is used to fix the entire device, and the lifting and lowering of the lifting component 7 is controlled by the console 6 to send the gas collecting hopper 5 to the height required for collection. The control valve at the bottom of the pipeline 4 is selected to determine the collection height. The pipeline 4 is connected to the input end of the air pump 8 through the merging joint at the bottom. The output end of the pipeline 4 and the three gas storage tanks 3 are connected to each other through branch pipes with control valves. The corresponding control valve is selected to store the collected air accordingly.

[0027] like Figure 2 and Figure 3 As shown, the moving component 2 includes a secondary pedal 22 and a locking hook 25. The front part of the secondary pedal 22 is rotatably connected to the bottom behind the front leg of the structural box 1, and the bottom in front of the rear leg of the structural box 1 is rotatably connected to the main pedal 24. The middle part of the lower surface of the secondary pedal 22 and the front end of the bottom of the main pedal 24 are rotatably connected to the universal wheel 21. The main pedal 24 and the secondary pedal 22 are fixedly connected to the end away from the structural box 1 with a pin 23, and the top of the rear leg of the structural box 1 and the middle part of the front leg of the structural box 1 are fixedly connected to the fixing component 29.

[0028] It should be noted that when the sampling device needs to be moved, step on the main pedal 24 with your foot, and the locking hook 25 can hook the pin 23 on the auxiliary pedal 22. At this time, one side of the air sampling device is tilted up, so that the universal wheel 21 touches the ground, and the same method is used on the other side. When you want to fix the air sampling device, push the locking hook 25 forward to disengage the locking hook 25 from the pin 23 on the auxiliary pedal 22. The air sampling device automatically falls due to gravity and pushes the moving component 2 upward. After the operation on both sides is completed, the air sampling device can be fixed.

[0029] like Figure 3 As shown, the front side of the main pedal 24 away from the air tank 3 is fixedly connected to the limit block 28, and the front side of the bottom of the main pedal 24 overlaps the rear side of the top of the auxiliary pedal 22.

[0030] It should be noted that the auxiliary pedal 22 is shorter and the main pedal 24 is longer. The main pedal 24 is overlapped on top of the auxiliary pedal 22. When the main pedal 24 is stepped on, the auxiliary pedal 22 is also forced downward, so that the two universal wheels 21 on the same side support the device at the same time. A limit block 28 is set on the rotation path at the top of the locking hook 25 to limit the rotation range of the locking hook 25 and prevent excessive rotation.

[0031] like Figure 2 and Figure 4 As shown, the outer surface of the pin 23 located on the main pedal 24 is rotatably connected to the middle part of the left side of the locking hook 25, and the inner surface of the bottom of the locking hook 25 overlaps the outer surface of the pin 23 located on the auxiliary pedal 22. The front side of the locking hook 25 near the bottom is fixedly connected to the first spring 27, and the front end of the first spring 27 is fixedly connected to the limiting groove 26. The side of the limiting groove 26 near the air tank 3 is fixedly connected to the front side of the main pedal 24 away from the air tank 3.

[0032] It should be noted that the bottom of the locking hook 25 is inclined toward the side of the limit groove 26. When the locking hook 25 moves downward, the inclined surface can guide the locking hook 25 to smoothly lock the pin 23 on the auxiliary pedal 22. When the universal wheel 21 is lifted, the locking hook 25 can be disengaged by rotating the locking hook 25. The first spring 27 connected to the locking hook 25 will reset the locking hook 25 and prepare for the next locking.

[0033] like Figure 3 and Figure 5As shown, the fixing assembly 29 includes a base plate 291, and a side of the upper surface of the base plate 291 close to the pin 23 is fixedly connected to a symmetrically distributed stabilizing bridge 294, and the top of the opposite side of the stabilizing bridge 294 is rotatably connected to a pressure plate 293, and the side of the pressure plate 293 away from the locking hook 25 is fixedly connected to a second spring 292, and the bottom of the second spring 292 is fixedly connected to the middle of the upper surface of the base plate 291, and the side of the lower surface of the pressure plate 293 close to the locking hook 25 is fixedly connected to a limiting pin 295, and the lower surface of the limiting pin 295 is inclined toward the side of the base plate 291, and the side of the base plate 291 away from the limiting pin 295 is fixedly connected to the side opposite to the leg of the structural box 1, and a slot 296 is provided in the middle of the front of the main pedal 24 and the back of the auxiliary pedal 22, and the inner diameter of the slot 296 is larger than the diameter of the limiting pin 295.

[0034] It should be noted that when the device is fixed, the mobile component 2 is rotated upward along the connection position. When the mobile component 2 touches the limit pin 295, the limit pin 295 moves upward and compresses the second spring 292. The mobile component 2 is continuously rotated. When the second spring 292 is located directly above the slot 296, the second spring 292 releases the elastic force to fix the mobile component 2 through the limit pin 295. When the device needs to be moved, press the pressure plate 293 downward away from the side of the limit pin 295. The limit pin 295 moves upward to disengage from the mobile component 2. The mobile component 2 automatically falls according to gravity to complete the unlocking of the fixed component 29.

[0035] like Figure 6 As shown, the lifting assembly 7 includes a motor 71, the bottom of the motor 71 is fixedly connected to the middle of the upper surface of the structural box 1, the output end of the motor 71 is fixedly connected to a screw 76, the bottom of the screw 76 is threadedly connected to a fixing plate 73, and the left and right sides of the upper surface of the fixing plate 73 are commonly fixedly connected to a second rod 74, and the left and right sides of the second rod 74 are provided with rectangular wheel grooves 79, and the middle parts of the two wheel grooves 79 are rotatably connected to gears 78, and the outer surfaces of the two gears 78 are engaged with two racks 77, and the opposite sides of the two racks 77 on the inner side are commonly fixedly connected to the third rod 75, and the away sides of the two racks 77 on the outer side are commonly fixedly connected to the first rod 72, and the bottom of the first rod 72 is fixedly connected to the upper surface of the structural box 1, and the screw 76 is located on the inner side of the third rod 75.

[0036] It should be noted that the motor 71 is controlled to rotate by the console 6, thereby driving the screw 76 to rotate, so that the fixed plate 73 pushes the third rod 75 upward, and the gear 78 inside the wheel groove 79 rises synchronously. The bottom of the first rod 72 located on the outside is fixed to the top of the structural box 1, and the gear 78 rotates with the cooperation of the rack 77 on the first rod 72, thereby pushing the rack 77 on the third rod 75, so that the third rod 75 moves synchronously, and multi-section synchronous movement is achieved through mutual cooperation.

[0037] The working principle of the present invention is as follows: press the pressure plate 293 downwards away from one side of the limiting pin 295, and the limiting pin 295 moves upwards to disengage from the mobile component 2. The mobile component 2 automatically falls according to gravity to complete the unlocking of the fixed component 29. Step on the main pedal 24 with your foot, and the locking hook 25 can hook the pin 23 on the auxiliary pedal 22. At this time, one side of the air sampling device is tilted up, so that the universal wheel 21 touches the ground. The same method is used on the other side to move the device to the collection location, and the locking hook 25 is pushed forward to disengage the locking hook 25 from the auxiliary pedal. The pin 23 on 22, the air sampling device automatically falls due to gravity and pushes the mobile component 2 upward. After the operation on both sides, the air sampling device can be fixed, and the mobile component 2 is rotated upward along the connection position. When the mobile component 2 touches the limit pin 295, the limit pin 295 moves upward and compresses the second spring 292, and the mobile component 2 is continuously rotated. When the second spring 292 is located just above the slot 296, the second spring 292 releases its elastic force to fix the mobile component 2 through the limit pin 295, and the motor 71 is controlled by the console 6 to rotate. The screw 76 is rotated, causing the fixed plate 73 to push the third rod 75 upward, and the gear 78 inside the wheel groove 79 rises synchronously. The bottom of the first rod 72 on the outside is fixed to the top of the structural box 1. The gear 78 rotates with the cooperation of the rack 77 on the first rod 72, thereby pushing the rack 77 on the third rod 75, causing the third rod 75 to move synchronously. Through mutual cooperation, multiple sections of synchronous movement are achieved, and the gas collecting hopper 5 is sent to the required collection height. The collection height is determined by selecting the control valve at the bottom of the pipeline 4. The pipeline 4 is connected to the input end of the air pump 8 through the bottom merging joint. The output end of the pipeline 4 and the three gas storage tanks 3 are connected to each other through branch pipes with control valves. The corresponding control valve is selected to store the collected air accordingly. The air pump 8 is turned on for collection. Before storage, the control valve on the gas storage tank 3 is opened for collection. After the residual gas in the gas storage tank 3 is emptied, the control valve on the gas storage tank 3 is closed for storage. After collection is completed, all control valves are closed, and the lifting assembly 7 is retracted through the console 6. The moving assembly 2 is released again to move to the next collection point.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An ambient air sampling device, comprising a structural box (1), characterized in that: An air storage tank (3) is fixedly installed at the bottom of the inner cavity of the structural box (1), an air pump (8) is fixedly installed on the right side of the upper surface of the air storage tank (3), an input end of the air pump (8) is fixedly connected to a pipeline (4), a control console (6) is fixedly connected to the front of the upper surface of the structural box (1), a lifting assembly (7) is fixedly connected to the middle of the upper surface of the structural box (1), three air collecting hoppers (5) are fixedly installed on the left side of the top of the lifting assembly (7), the outer wall of the air collecting hopper (5) is fixedly connected to the top of the pipeline (4), and the left and right sides of the structural box (1) are rotatably connected to symmetrically distributed moving assemblies (2).

2. The ambient air sampling device according to claim 1, characterized in that: The moving assembly (2) includes an auxiliary pedal (22) and a locking hook (25), the front portion of the auxiliary pedal (22) is rotatably connected to the bottom portion behind the front leg of the structural box (1), and the bottom portion in front of the rear leg of the structural box (1) is rotatably connected to the main pedal (24), the middle portion of the lower surface of the auxiliary pedal (22) and the front end of the bottom portion of the main pedal (24) are both rotatably connected to a universal wheel (21), the ends of the main pedal (24) and the auxiliary pedal (22) away from the structural box (1) are both fixedly connected to a pin (23), and the top portion of the rear leg of the structural box (1) and the middle portion of the front leg of the structural box (1) are both fixedly connected to a fixing assembly (29).

3. The ambient air sampling device according to claim 2, characterized in that: The front side of the main pedal (24) away from the gas storage tank (3) is fixedly connected to a limit block (28), and the front side of the bottom of the main pedal (24) is overlapped with the rear side of the top of the auxiliary pedal (22).

4. The ambient air sampling device according to claim 2, characterized in that: The outer surface of the pin (23) on the main pedal (24) is rotatably connected to the middle of the left side of the locking hook (25), and the inner surface of the bottom of the locking hook (25) overlaps the outer surface of the pin (23) on the auxiliary pedal (22). A first spring (27) is fixedly connected to the side of the front of the locking hook (25) close to the bottom, and the front end of the first spring (27) is fixedly connected to the limiting groove (26). The side of the limiting groove (26) close to the gas tank (3) is fixedly connected to the front side of the main pedal (24) away from the gas tank (3).

5. The ambient air sampling device according to claim 3, characterized in that: The fixing assembly (29) includes a bottom plate (291), a side of the upper surface of the bottom plate (291) close to the pin (23) is fixedly connected to a symmetrically distributed stabilizing bridge (294) on the left and right, the top of the opposite side of the stabilizing bridge (294) is connected to a pressure plate (293) in a common rotation, and a side of the lower surface of the pressure plate (293) away from the locking hook (25) is fixedly connected to a second spring (292), and the bottom of the second spring (292) is fixedly connected to the middle of the upper surface of the bottom plate (291). The side of the lower surface of the pressure plate (293) close to the locking hook (25) is fixedly connected to the limiting pin (295), and the lower surface of the limiting pin (295) is inclined toward the side of the base plate (291). The side of the base plate (291) away from the limiting pin (295) is fixedly connected to the side opposite to the support leg of the structural box (1). The front of the main pedal (24) and the middle of the back of the auxiliary pedal (22) are both provided with a slot hole (296), and the inner diameter of the slot hole (296) is larger than the diameter of the limiting pin (295).

6. The ambient air sampling device according to claim 1, characterized in that: The lifting assembly (7) includes a motor (71), the bottom of the motor (71) is fixedly connected to the middle of the upper surface of the structural box (1), the output end of the motor (71) is fixedly connected to a screw (76), the bottom of the screw (76) is threadedly connected to a fixed plate (73), the left and right sides of the upper surface of the fixed plate (73) are fixedly connected to a second rod (74), the left and right sides of the second rod (74) are both provided with rectangular wheel grooves (79), the middle parts of the two wheel grooves (79) are rotatably connected to gears (78), the outer surfaces of the two gears (78) are meshed with two racks (77), the opposite sides of the two racks (77) located on the inner side are fixedly connected to a third rod (75), the away sides of the two racks (77) located on the outer side are fixedly connected to a first rod (72), the bottom of the first rod (72) is fixedly connected to the upper surface of the structural box (1), and the screw (76) is located on the inner side of the third rod (75).

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