Sampling device for atmospheric monitoring

Abstract

The utility model discloses a sampling device for atmosphere monitoring, and relates to the field of atmosphere monitoring. A movable plate, a sampling air bag, a sampling fan and an emergency stop assembly are arranged in the device main body; the sampling fan is fixed in the device main body, the air outlet is communicated with the sampling airbag, and the air inlet pipe extends out of the device main body; the sampling air bag abuts against the movable plate; the emergency stop component is positioned on the movable plate side deviating from the sampling airbag; a pressing rod is arranged on the movable plate deviating from the sampling airbag; the emergency stop assembly comprises a fixed cylinder, a sliding pressing block and a trigger switch. The fixed cylinder faces the movable plate; the trigger switch is located on the end face, away from the movable plate, of the fixed cylinder and electrically connected with the sampling fan, and the sliding pressing block is slidably connected to the inner wall of the fixed cylinder. Through cooperative use of the emergency stop assembly, the movable plate and the sampling air bag, the sampling fan can be shut down in time after the sampling air bag is full of air, and the situation that air continuously enters the sampling air bag, and consequently the air pressure in the sampling air bag is too large or the sampling air bag is damaged is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of atmosphere monitoring, and in particular relates to a sampling device for atmosphere monitoring. Background Art

[0002] Atmospheric monitoring, also known as air monitoring, refers to the fixed-point and regular sampling and measurement of pollutants in the air. In order to monitor the air, different sampling points need to be set up at different locations to facilitate the analysis of atmospheric data.

[0003] Existing atmospheric sampling devices mostly adopt fixed-point and timed sampling, and use a fan to draw external air into the sampling tank. However, the existing technology has the problem of not shutting down the fan in time, causing the fan to continue to draw air into the sampling airbag, thereby increasing the air pressure in the sampling airbag. In addition, the continuous operation of the fan will increase energy consumption, thereby increasing the cost of using the sampling device. Utility Model Content

[0004] The utility model aims at the deficiencies in the prior art and provides a sampling device for atmosphere monitoring, which can shut down the sampling fan in time.

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

[0006] A sampling device for air monitoring, comprising a device body; a movable plate, a sampling air bag, a sampling fan and an emergency stop assembly are arranged in the device body; the sampling fan is fixed in the device body, and the air outlet is connected to the sampling air bag, and the air inlet pipe extends out of the device body; the sampling air bag abuts against the movable plate; the emergency stop assembly is installed in the device body and is located on the side of the movable plate away from the sampling air bag; a pressure rod is arranged on the side of the movable plate away from the sampling air bag; the emergency stop assembly comprises a fixed cylinder, a sliding pressure block and a trigger switch; the fixed cylinder is arranged facing the movable plate; the trigger switch is located on the end surface of the fixed cylinder away from the movable plate, and is electrically connected to the sampling fan, and the sliding pressure block is slidably connected to the inner wall of the fixed cylinder; when the sampling air bag is inflated, the sampling air bag is deformed to push the movable plate and the pressure rod to move in the direction away from the sampling air bag, so that the pressure rod can push the sliding pressure block to move in the direction of the trigger switch; when the sliding pressure block presses the trigger switch, the sampling fan stops working.

[0007] Optionally, the emergency stop assembly also includes a return spring; a second sliding groove is opened on the inner wall of the fixed cylinder; both ends of the sliding pressure block are slidably connected in the second sliding groove; one end of the return spring is connected to the sliding pressure block, and the other end is connected to the end of the second sliding groove close to the trigger switch.

[0008] Optionally, a first sliding groove is provided on the inner wall of the device body, and the end of the movable plate is slidably connected in the first sliding groove through a slider; the movable plate is located below the sampling airbag and is installed on the bottom surface of the device body through a spring rod.

[0009] Optionally, a vent is provided on the surface of the device body; a filter is installed on the vent; a cleaning component is installed on the filter; a transmission component is installed on the movable plate, and the cleaning component cleans the filter under the action of the transmission component.

[0010] Optionally, the cleaning assembly includes a cleaning rod and a rotating shaft; the transmission assembly includes a gear and a rack; the cleaning rod is located on the outside of the filter; the rotating shaft passes through the filter and is connected to the cleaning rod; the end of the rotating shaft facing away from the cleaning rod is connected to the gear; the rack is meshed with the gear and the rack is installed on the movable plate.

[0011] Optionally, the sampling airbag is provided with an exhaust pipe; the exhaust port of the exhaust pipe is located inside the device body; the air outlet of the sampling fan is connected to the sampling airbag through a hose, and the exhaust pipe is connected to an exhaust valve.

[0012] Optionally, a partition is provided in the main body of the device; the partition divides the main body of the device into a first chamber and a second chamber which are independent of each other; the movable plate, sampling airbag, sampling fan and emergency stop assembly are all located in the first chamber, and a power supply assembly is placed in the second chamber, and the power supply assembly is electrically connected to the sampling fan.

[0013] Optionally, the power supply assembly includes an AC / DC converter and a battery; a photovoltaic module is also provided on the outside of the device body, and the photovoltaic module is electrically connected to the battery; the electrical output end of the battery is electrically connected to the sampling fan through the AC / DC converter.

[0014] Optionally, a fixed plate connected to the partition is arranged in the first chamber; the fixed plate and the movable plate are arranged opposite to each other and clamp the sampling airbag therebetween.

[0015] The beneficial effects of the utility model are:

[0016] (1) By providing an emergency stop assembly and a sampling air bag, when external air continues to enter the sampling air bag, the sampling air bag expands, driving the movable plate and the pressure rod to move. When the pressure rod moves, it can enter the fixed tube. When the sampling air bag expands to a larger or too large size, the pressure rod will push the sliding pressure block to move, and the sliding pressure block will move and press the trigger switch to stop the sampling fan. By using the emergency stop assembly, the movable plate and the sampling air bag in coordination, the sampling fan can be turned off in time after the sampling air bag is filled with gas, thereby preventing air from continuously entering the sampling air bag and causing excessive pressure or damage in the sampling air bag.

[0017] (2) By providing a cleaning component, when the sampling airbag is continuously inflated, the sampling airbag expands, thereby pushing the movable plate downward. When the movable plate moves, it drives the rack to move, thus driving the gear to rotate. After the gear rotates, it drives the rotating shaft and the cleaning rod to rotate, and after the cleaning rod rotates, it can scrape off the dust or impurities attached to the surface of the filter screen, improve the cleanliness of the filter screen surface, avoid clogging of the filter screen by impurities, and facilitate subsequent air circulation. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present utility model;

[0019] Figure 2 It is a schematic diagram of the overall front cross-sectional structure of the present utility model;

[0020] Figure 3 It is a schematic diagram of the partial three-dimensional structure of the device main body of the present utility model;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the sampling airbag of the present utility model;

[0022] Figure 5 It is a schematic diagram of the bottom three-dimensional structure of the movable plate of the present utility model;

[0023] Figure 6 Of the present utility model Figure 2 Enlarged schematic diagram of part A;

[0024] Figure 7 Of the present utility model Figure 2 Enlarged schematic diagram of part B.

[0025] In the figure, the markings are: 1 is the device main body, 101 is the first chamber, 102 is the second chamber, 2 is the movable plate, 21 is the spring rod, 22 is the slider, 23 is the first sliding groove, 3 is the sampling airbag, 31 is the exhaust pipe, 4 is the sampling fan, 41 is the intake pipe, 5 is the emergency stop component, 51 is the fixed cylinder, 52 is the sliding pressure block, 53 is the trigger switch, 54 is the return spring, 55 is the second sliding groove, 6 is the pressure rod, 7 is the cleaning component, 71 is the cleaning rod, 72 is the rotating shaft, 73 is the gear, 74 is the rack, 8 is the filter screen, 9 is the storage battery, 10 is the AC / DC converter, 11 is the photovoltaic module, 12 is the fixing plate, 13 is the partition plate. Detailed Description of the Specific Embodiment

[0026] The present utility model will be described in detail below with reference to the accompanying drawings.

[0027] It should be noted that the terms such as "upper", "lower", "left", "right", "front", and "back" cited in the utility model are only for the sake of clarity in narration and are not used to limit the scope of implementation of the utility model. The change or adjustment of their relative relationship, without substantial change in the technical content, should also be regarded as the scope of implementation of the utility model.

[0028] As Figure 1 and 2 shown, a sampling device for air monitoring includes a device main body 1; a partition 13 is arranged in the device main body 1; the partition 13 divides the device main body 1 into an independent first chamber 101 and a second chamber 102; a movable plate 2, a sampling airbag 3, a sampling fan 4 and an emergency stop component 5 are arranged in the first chamber 101; the sampling fan 4 is fixed on the inner wall of the first chamber 101, and the air outlet is communicated with the sampling airbag 3, and the air inlet pipe 41 extends out of the device main body 1; the sampling airbag 3 abuts against the movable plate 2; when the sampling airbag 3 is inflated, the sampling airbag 3 deforms and pushes the movable plate 2 to move in a direction away from the sampling airbag 3, that is, after the sampling airbag 3 is inflated, it can push the movable plate 2 to move; the emergency stop component 5 is installed in the device main body 1 and is located on the side of the movable plate 2 away from the sampling airbag 3; a pressure rod 6 is arranged on the side of the movable plate 2 away from the sampling airbag 3.

[0029] As Figure 6 shown, the emergency stop component 5 includes a fixed cylinder 51, a sliding pressing block 52 and a trigger switch 53; the fixed cylinder 51 faces the movable plate 2; the fixed cylinder 51 is fixed on the inner wall of the device main body 1; the trigger switch 53 is located on the end face of the fixed cylinder 51 away from the movable plate 2 and is electrically connected to the sampling fan 4, and the sliding pressing block 52 is slidably connected to the inner wall of the fixed cylinder 51; the trigger switch 53 is an emergency stop button for the sampling fan 4. After the movable plate 2 moves, the pressure rod 6 pushes the sliding pressing block 52. After the sliding pressing block 52 slides, it can press the trigger switch 53, so that the sampling fan 4 is powered off and stops working. Of course, the trigger switch 53 can also be a deceleration stop button for the sampling fan 4, which can be determined specifically according to the sampling volume of the sampling airbag 3; the setting of the emergency stop component 5 can timely turn off the sampling fan 4 after the sampling airbag 3 is filled with air, preventing air from continuously entering the sampling airbag 3 and causing excessive air pressure in the sampling airbag 3 and damage, with high safety.

[0030] The emergency stop assembly 5 further includes a return spring 54; a second sliding groove 55 is formed in the inner wall of the fixed cylinder 51; both ends of the sliding press block 52 are slidably connected in the second sliding groove 55; one end of the return spring 54 is connected to the sliding press block 52, and the other end is connected to the end of the second sliding groove 55 close to the trigger switch 53. The arrangement of the return spring 54 can drive the sliding press block 52 to reset after the movable plate 2 resets, so that the sampling fan 4 can be normally started when the starting conditions are met.

[0031] Specifically, the air outlet of the sampling fan 4 is connected to the sampling airbag 3 through a hose. The hose can be made of a telescopic material or the hose itself can be bent to be connected to the sampling airbag 3 to ensure that there is a margin after the sampling airbag 3 deforms; the sampling airbag 3 is provided with an exhaust pipe 31; the exhaust port of the exhaust pipe 31 is located inside the device main body 1, and an exhaust valve is provided on the exhaust pipe 31. The exhaust valve can be an automatic exhaust valve controlled by a controller, or of course, it can also be set as a semi-automatic exhaust valve or a manual exhaust valve that requires manual control or operation.

[0032] Specifically, a power supply assembly is placed in the second chamber 102. The power supply assembly is electrically connected to the sampling fan 4. The power supply assembly includes an AC-DC converter 10 and a storage battery 9; a photovoltaic module 11 is further provided on the outer side of the device main body 1. The photovoltaic module 11 is electrically connected to the storage battery 9; the electrical output end of the storage battery 9 is electrically connected to the sampling fan 4 through the AC-DC converter 10. The photovoltaic module 11 can convert light energy into electrical energy and store it in the storage battery 9. The storage battery 9 can provide power for the operation of the sampling fan 4. The connection method between the photovoltaic module 11 and the storage battery 9 can refer to the prior art, and the connection methods between the storage battery 9, the AC-DC converter 10 and the sampling fan 4 also refer to the prior art.

[0033] Specifically, as Figures 2-5 shown, the movable plate 2 is located below the sampling airbag 3 and is installed on the bottom surface of the device main body 1 through a spring rod 21; a first sliding groove 23 is provided on the inner wall of the device main body 1. The end of the movable plate 2 is slidably connected in the first sliding groove 23 through a slider 22; the first sliding groove 23 and the slider 22 are used in cooperation to provide guidance for the movement of the movable plate 2. The arrangement of the spring rod 21 can enable the movable plate 2 to automatically reset after the sampling airbag 3 is emptied.

[0034] In some other embodiments, such as Figures 2-4As shown, a vent is provided on the surface of the device body 1; a filter 8 is installed at the vent; a cleaning assembly 7 is installed on the filter 8; a transmission assembly is installed on the movable plate 2, and the cleaning assembly 7 cleans the filter 8 under the action of the transmission assembly; the setting of the filter 8 enables the inside and outside of the device body 1 to be connected, thereby facilitating heat dissipation and discharging the gas in the sampling air bag 3 out of the device body 1. In addition, the air in the sampling air bag 3 is discharged through the exhaust pipe 31 and then discharged from the device body 1 through the vent; the setting of the cleaning assembly 7 can clean the filter 8 to avoid clogging of the filter 8.

[0035] Specifically, Figure 7 As shown, the cleaning assembly 7 includes a cleaning rod 71 and a rotating shaft 72; the transmission assembly includes a gear 73 and a rack 74; the cleaning rod 71 is located on the outside of the filter 8; the rotating shaft 72 passes through the filter 8 and is connected to the cleaning rod 71; the end of the rotating shaft 72 away from the cleaning rod 71 is connected to the gear 73; the rack 74 is meshed with the gear 73, the rack 74 is installed on the movable plate 2, and the gear 73 can be rotatably installed on the device body 1 through a connecting piece. During the movement of the movable plate 2, the rack 74 is driven to move, and the rack 74 drives the rotating shaft 72 to rotate after the movement. After the rotating shaft 72 rotates, the cleaning rod 71 is driven to rotate and scrape on the surface of the filter 8, thereby cleaning the dust on the filter 8.

[0036] Specifically, a fixed plate 12 connected to the partition 13 is provided in the first chamber 101, and the sampling airbag 3 is fixed on the fixed plate 12, so as to limit the sampling airbag 3. The exhaust pipe 31 or hose connected to the sampling airbag 3 can pass through the fixed plate 12; the fixed plate 12 and the movable plate 2 are arranged relatively to each other and the sampling airbag 3 is clamped therebetween. The arrangement of the partition 13, the fixed plate 12 and the rack 74 can limit the expansion direction of the sampling airbag 3 from three directions, thereby driving the sampling airbag 3 to push the movement of the movable plate 2. The thickness of the rack 74 can be adjusted according to actual needs, so as to ensure the effect of limiting the sampling airbag 3.

[0037] Working process: the device body 1 is placed at the location to be sampled. When the gas needs to be sampled, the sampling fan 4 is started. The sampling fan 4 works to extract external gas. The gas enters the sampling airbag 3 through the air inlet pipe 41 to sample the external gas. As the gas continues to enter the sampling airbag 3, the sampling airbag 3 expands in the direction of the movable plate 2 and then pushes the movable plate 2 to move. When the movable plate 2 moves, it will drive the pressure rod 6 to move downward. When the sampling airbag 3 expands to the maximum or is too large, the pressure rod 6 pushes the sliding pressure block 52 to move, so that the sliding pressure block 52 touches the trigger switch 53, thereby shutting down the sampling fan 4. At this time, the sampling fan 4 no longer draws external air into the sampling airbag 3. In this way, the sampling fan 4 can be turned off in time after the sampling airbag 3 is full of air.

[0038] Meanwhile, after the movable plate 2 moves, it presses the spring rod 21. The movement of the sliding plate drives the movement of the rack 74. When the rack 74 moves, it drives the rotation of the gear 73 and the rotating shaft 72, and then drives the rotation of the cleaning rod 71. After the cleaning rod 71 rotates, it can scrape off the dust or impurities attached to the surface of the filter screen 8.

[0039] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other.

[0040] The above is only the preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should be regarded as within the protection scope of the present invention.

Claims

1. A sampling device for air monitoring, characterized in that: The invention comprises a device body (1); a movable plate (2), a sampling air bag (3), a sampling fan (4) and an emergency stop assembly (5) are arranged in the device body (1); the sampling fan (4) is fixed in the device body (1), and the air outlet is connected to the sampling air bag (3), and the air inlet pipe (41) extends out of the device body (1); the sampling air bag (3) abuts against the movable plate (2); the emergency stop assembly (5) is installed in the device body (1) and is located on the side of the movable plate (2) away from the sampling air bag (3); a pressure rod (6) is arranged on the side of the movable plate (2) away from the sampling air bag (3); the emergency stop assembly (5) comprises a fixed tube (51), a sliding pressure block (52) and a trigger switch ( 53); the fixed cylinder (51) is arranged facing the movable plate (2); the trigger switch (53) is located on the end surface of the fixed cylinder (51) away from the movable plate (2), and is electrically connected to the sampling fan (4), and the sliding pressure block (52) is slidably connected to the inner wall of the fixed cylinder (51); when the sampling air bag (3) is inflated, the sampling air bag (3) is deformed to push the movable plate (2) and the pressure rod (6) to move in a direction away from the sampling air bag (3), so that the pressure rod (6) can push the sliding pressure block (52) to move in the direction where the trigger switch (53) is located; when the sliding pressure block (52) presses the trigger switch (53), the sampling fan (4) stops working.

2. The sampling device for air monitoring according to claim 1, characterized in that: The emergency stop assembly (5) further comprises a return spring (54); a second sliding groove (55) is provided on the inner wall of the fixed cylinder (51); both ends of the sliding pressure block (52) are slidably connected in the second sliding groove (55); one end of the return spring (54) is connected to the sliding pressure block (52), and the other end is connected to the end of the second sliding groove (55) close to the trigger switch (53).

3. The sampling device for atmosphere monitoring according to claim 1, characterized in that: The inner wall of the device body (1) is provided with a first sliding groove (23), and the end of the movable plate (2) is slidably connected in the first sliding groove (23) via a slider (22); the movable plate (2) is located below the sampling air bag (3) and is installed on the bottom surface of the device body (1) via a spring rod (21).

4. The sampling device for air monitoring according to claim 1, characterized in that: A vent is provided on the surface of the device body (1); a filter (8) is installed in the vent; a cleaning component (7) is installed on the filter (8); a transmission component is installed on the movable plate (2), and the cleaning component (7) cleans the filter (8) under the action of the transmission component.

5. The sampling device for air monitoring according to claim 4, characterized in that: The cleaning assembly (7) comprises a cleaning rod (71) and a rotating shaft (72); the transmission assembly comprises a gear (73) and a rack (74); the cleaning rod (71) is located outside the filter screen (8); the rotating shaft (72) passes through the filter screen (8) and is connected to the cleaning rod (71); the end of the rotating shaft (72) facing away from the cleaning rod (71) is connected to the gear (73); the rack (74) is meshed with the gear (73) and the rack (74) is mounted on the movable plate (2).

6. The sampling device for air monitoring according to claim 1, characterized in that: The sampling air bag (3) is provided with an exhaust pipe (31); the exhaust port of the exhaust pipe (31) is located inside the device body (1); the air outlet of the sampling fan (4) is connected to the sampling air bag (3) through a hose, and the exhaust pipe (31) is connected to an exhaust valve.

7. The sampling device for air monitoring according to claim 1, characterized in that: A partition (13) is arranged in the device body (1); the partition (13) divides the device body (1) into a first chamber (101) and a second chamber (102) which are independent of each other; the movable plate (2), the sampling air bag (3), the sampling fan (4) and the emergency stop component (5) are all located in the first chamber (101), and a power supply component is placed in the second chamber (102), and the power supply component is electrically connected to the sampling fan (4).

8. The sampling device for air monitoring according to claim 7, characterized in that: The power supply assembly comprises an AC / DC converter (10) and a storage battery (9); a photovoltaic module (11) is also provided on the outside of the device body (1), and the photovoltaic module (11) is electrically connected to the storage battery (9); the electrical output end of the storage battery (9) is electrically connected to the sampling fan (4) through the AC / DC converter (10).

9. The sampling device for air monitoring according to claim 7, characterized in that: A fixed plate (12) connected to a partition plate (13) is arranged in the first chamber (101); the fixed plate (12) and the movable plate (2) are arranged opposite to each other and sandwich the sampling air bag (3) therebetween.

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