Portable atmosphere detection device

Abstract

The invention discloses a portable atmosphere detection device, and belongs to the technical field of atmosphere detection, and the device comprises a housing, the four corners of the lower end face of the housing are provided with rollers; the air inlet bin is arranged on the upper side of the interior of the machine shell, and a plurality of air grooves are distributed in the circumference of the upper end face of the air inlet bin. The circulating air supply unit is vertically arranged in the machine shell, and the upper end of the circulating air supply unit communicates with the air inlet bin; the air exhaust bin is fixed in the machine shell and located under the circulating air supply unit, and an air exhaust channel is arranged on one side of the air exhaust bin; the gas production unit is installed in the machine shell, and a production pipe is connected between the gas production unit and the circulating air supply unit; according to the invention, high-efficiency dynamic drainage and high-frequency continuous sampling of environmental airflow can be realized, and the accuracy and reliability of atmosphere detection are remarkably improved.

Description

Technical Field

[0001] The invention belongs to the technical field of atmosphere detection, in particular to a portable atmosphere detection device. Background Art

[0002] Atmospheric environment quality testing is the process of observing and analyzing pollutants in the atmospheric environment, their changes and their impact on the environment. The molecular pollutants tested mainly include sulfur oxides, nitrogen oxides, carbon monoxide, ozone, halogenated hydrocarbons, hydrocarbons, etc.; the particulate pollutants mainly include dust, total suspended particulates, floating dust and acid deposition, etc.

[0003] Currently, existing atmospheric monitoring devices can not only conduct on-site monitoring of the air at the detection site, but also store the local air for more rigorous analysis later.

[0004] However, most traditional equipment has a low sampling frequency for the atmosphere and cannot capture changes in pollutant concentrations in a short period of time, resulting in the sampling data not being able to truly reflect the actual situation. At the same time, the traditional static sampling method has low collection efficiency and limited range, and the collected gas cannot be stored well.

[0005] Therefore, it is necessary to provide a portable atmosphere detection device to solve the problems raised in the above background technology. Summary of the invention

[0006] To achieve the above object, the present invention provides the following technical solution: a portable atmosphere detection device, comprising: The casing has rollers installed at the four corners of the lower end surface; An air inlet bin is arranged on the upper inner side of the housing, and a plurality of air slots are distributed circumferentially on the upper end surface of the air inlet bin; A circulating air supply unit is vertically arranged in the casing, and the upper end of the circulating air supply unit is connected to the air inlet bin; An exhaust bin is fixed in the casing and is located directly below the circulating air supply unit, and an exhaust passage is provided on one side of the exhaust bin; An air collection unit is installed in the casing, and a collection pipe is connected between the air collection unit and the circulating air supply unit; The gas extraction unit comprises: A tank bin is arranged in the casing and located on one side of the air inlet bin, wherein a plurality of negative pressure gas cylinders are arranged in the tank bin; A fixed plate, fixed in the housing, on which a vertical guide rail arranged vertically and a horizontal guide rail arranged obliquely are installed, and the upper end of the vertical guide rail extends into the tank bin; A storage bin is arranged in the casing and located on one side of the exhaust bin, and one end of the transverse guide rail extends into the storage bin; A turntable is rotatably connected to the fixed plate, and a plurality of clamping grooves are provided on the turntable; The air guide device is horizontally arranged on one side of the fixing plate.

[0007] Preferably, a frame is fixed outside the fixing plate, a connecting plate is bolted to the frame, two laterally arranged pillars are symmetrically fixed to one side of the connecting plate, a positioning plate is fixed between the pillars, and the air guide device is connected to the positioning plate; One end of the gas guide device is connected to an air supply pipe, and the air supply pipe is in communication with the sampling pipe; A fence rod is fixed on the fixing plate at the periphery of the rotating disk. The cross section of the fence rod is an arc-shaped structure and is cocentric with the rotating disk.

[0008] Preferably, each of the negative pressure gas cylinders in the tank warehouse extracts the gas in the bottle through a vacuum pump, and the bottle mouth of the negative pressure gas cylinder is sealed and connected with a rubber cover.

[0009] Preferably, the air guide device comprises: A connecting frame, one side of which is fixed with an L-shaped plate, and a steel pipe is slidably connected inside the L-shaped plate; A base is fixed to the connecting frame, a driving seat is slidably connected to the base, two shaft plates are fixed to the driving seat, the steel pipe is connected between the two shaft plates and is fixed to the driving seat through the shaft plates; A joint pipe is connected to one end of the steel pipe, and the other end of the joint pipe is sealingly and slidingly connected to the air supply pipe; The needle is connected to the other end of the steel tube.

[0010] Preferably, a propulsion device is fixed on the base, and an output end of the propulsion device is connected to the drive seat, thereby pushing the drive seat to slide horizontally along the base; A pipe protection seat is fixed on the connecting frame between the L-shaped plate and the base, a sleeve is fixed in the pipe protection seat, and the steel pipe is slidably connected with the sleeve.

[0011] Preferably, the circulating air supply unit comprises: An air filter cylinder is vertically fixed in the air intake bin; An exhaust seat is fixed in the casing and located below the air filter cylinder; The wind cover is sealed and connected below the exhaust seat, and a core tube is arranged at the inner center thereof; An air guide disk, the center of which is fixed in the wind cover and located below the core barrel, an annular cavity is provided inside the air guide disk, and one end of the sampling tube is connected to the annular cavity; The through holes are circumferentially distributed on the upper end surface of the air guide plate, and a discharge port is provided below the air guide plate.

[0012] Preferably, the exhaust seat is provided with fan blades, a driving motor is fixed above the housing, a rotating shaft is fixed at the output end of the driving motor, and the lower end of the rotating shaft is connected to the fan blades; The wind cover and the core barrel are both constructed into a conical cylinder structure, a plurality of air holes are opened on the side wall of the core barrel, and the core barrel is rotatably connected in the wind cover; a central shaft is vertically rotatably connected in the wind cover, and the central shaft is fixed to the core barrel; A plurality of spoilers are distributed on the outer wall of the core barrel.

[0013] Preferably, a built-in motor is fixed in the housing, and an output end of the built-in motor is connected to the central axis.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The circulating air supply unit mainly used in the present invention can continuously introduce and transport the atmosphere outside the casing through the air intake bin, and enter the exhaust bin during downward flow, and be discharged to the outside through the exhaust channel of the exhaust bin, thereby realizing the dynamic drainage of environmental air circulation, and the gas sampling unit can continuously sample the circulating atmosphere at a high frequency, and store it in a sealed manner by a plurality of negative pressure gas cylinders, thereby facilitating the subsequent detection of the atmosphere in each negative pressure gas cylinder one by one; on the one hand, this atmospheric collection method can capture the changes in pollutant concentration in a short period of time, avoiding the problem of insufficient data representativeness in traditional static sampling methods; on the other hand, it realizes efficient dynamic drainage and high-frequency continuous sampling of environmental airflow, significantly improving the accuracy and reliability of atmospheric detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the wind trough in the present invention; Figure 3 It is a structural schematic diagram of the gas extraction unit in the present invention; Figure 4 It is a structural schematic diagram of the turntable in the present invention; Figure 5 It is a structural schematic diagram of the air guide device in the present invention; Figure 6 It is a structural schematic diagram of the circulating air supply unit in the present invention; Figure 7 for Figure 6 A schematic diagram of the structure enlargement in the middle; In the figure: 1, housing; 11, air inlet; 12, air trough; 13, air exhaust; 14, air exhaust channel; 15, collection pipe; 2, circulating air supply unit; 21, air filter cylinder; 22, air exhaust seat; 23, air cover; 24, air guide plate; 25, annular cavity; 26, through hole; 27, exhaust port; 28, driving motor; 29, rotating shaft; 3, air collection unit; 31, tank; 32, storage bin; 33, fixing plate; 34, vertical guide Rail; 35, horizontal guide rail; 36, turntable; 37, frame; 38, connecting plate; 39, positioning plate; 310, air supply pipe; 311, fence pole; 4, negative pressure gas cylinder; 5, gas guide device; 51, connecting frame; 52, L-shaped plate; 53, steel pipe; 54, base; 55, drive seat; 56, shaft plate; 57, needle tube; 58, protective tube seat; 6, core tube; 61, air hole; 62, center axis; 63, built-in motor. DETAILED DESCRIPTION

[0016] See also Figure 1-Figure 7 In an embodiment of the present invention, a portable atmosphere detection device comprises: The housing 1 has rollers installed at the four corners of its lower end surface to facilitate movement. Quickly adjust the detection position of the equipment according to actual needs, especially suitable for work scenarios that require frequent equipment movement, such as laboratories and on-site monitoring; An air inlet bin 11 is arranged on the upper side of the housing 1, and a plurality of air slots 12 are distributed on the circumference of the upper end surface of the air inlet bin 11; the ambient air outside the housing 1 can enter the air inlet bin 11 through the air slots 12; A circulating air supply unit 2 is vertically arranged in the housing 1, and the upper end of the circulating air supply unit 2 is connected to the air inlet bin 11; The exhaust bin 13 is fixed in the housing 1 and is located directly below the circulating air supply unit 2. An exhaust passage 14 is provided on one side of the exhaust bin 13. After the ambient air outside the housing 1 enters the air inlet bin 11 through the air slot 12, it flows downward through the circulating air supply unit 2 and finally enters the exhaust bin 13. The exhaust passage 14 in the exhaust bin 13 discharges the atmospheric airflow to the outside. The gas sampling unit 3 is installed in the casing 1, and a sampling pipe 15 is connected between the gas sampling unit 3 and the circulating air supply unit 2. The sampling pipe 15 can transport the ambient atmosphere flowing in the circulating air supply unit 2 to the gas sampling unit 3, so that the gas sampling unit 3 can sample the ambient atmosphere.

[0017] In this embodiment, the gas collection unit 3 includes: A tank bin 31 is arranged in the housing 1 and located on one side of the air inlet bin 11, and a plurality of negative pressure gas cylinders 4 are arranged in the tank bin 31; A fixing plate 33 is fixed in the housing 1, and a vertical guide rail 34 and an inclined horizontal guide rail 35 are installed on the fixing plate 33, and the upper end of the vertical guide rail 34 extends into the tank bin 31; the negative pressure gas cylinders 4 in the tank bin 31 can be arranged in sequence and transported downward to the position of the fixing plate 33 through the vertical guide rail 34; The storage bin 32 is disposed in the housing 1 and located on one side of the exhaust bin 13, and one end of the transverse guide rail 35 extends into the storage bin 32; A turntable 36 is rotatably connected to the fixed plate 33, and a plurality of clamping grooves are provided on the turntable 36, and the clamping grooves can temporarily clamp each negative pressure gas cylinder 4; The gas guide device 5 is horizontally arranged on one side of the fixed plate 33; specifically, during the continuous rotation of the turntable 36, the negative pressure gas cylinders 4 arranged and transported in the vertical guide rails 34 can be distributed in sequence in the clamping grooves on the turntable 36, and the gas guide device 5 introduces atmosphere into the negative pressure gas cylinders 4 one by one, and then the negative pressure gas cylinders 4 can reach the position of the transverse guide rails 35, and the transverse guide rails 35 arrange the negative pressure gas cylinders 4 storing the ambient atmosphere into the storage bin 32 for storage.

[0018] As a preferred embodiment, the fixing plate 33 is externally fixed with a frame 37, the frame 37 is bolted with a connecting plate 38, one side of the connecting plate 38 is symmetrically fixed with two laterally arranged pillars, a positioning plate 39 is fixed between the pillars, and the air guide device 5 is connected to the positioning plate 39; One end of the air guide device 5 is connected to an air supply pipe 310, and the air supply pipe 310 is connected to the sampling pipe 15, so that the ambient air in the sampling pipe 15 can enter the air guide device 5 through the air supply pipe 310; A fence rod 311 is fixed on the fixing plate 33 at the periphery of the rotating disk 36 . The cross section of the fence rod 311 is an arc-shaped structure and is cocentric with the rotating disk 36 .

[0019] In this embodiment, each of the negative pressure gas cylinders 4 in the tank bin 31 extracts the gas in the bottle through a vacuum pump (not shown in the figure), and the bottle mouth of the negative pressure gas cylinder 4 is sealed with a rubber cover, wherein the gas guide device 5 can pass through the rubber cover and connect with the negative pressure gas cylinder 4. At this time, due to the existence of the internal and external pressure difference, the ambient atmosphere will be quickly sucked into the gas cylinder. After completing the extraction of the ambient atmosphere for a predetermined time or volume, the gas guide device 5 is quickly separated from the rubber cover of the negative pressure gas cylinder 4, and the rubber cover seals the bottle mouth of the negative pressure gas cylinder 4.

[0020] In this embodiment, the air guide device 5 includes: A connecting frame 51, one side of which is fixed with an L-shaped plate 52, and a steel pipe 53 is slidably connected inside the L-shaped plate 52; A base 54 is fixed to the connecting frame 51, a driving base 55 is slidably connected to the base 54, two shaft plates 56 are fixed to the driving base 55, and the steel pipe 53 is connected between the two shaft plates 56 and fixed to the driving base 55 through the shaft plates 56; A joint pipe is connected to one end of the steel pipe 53, and the other end of the joint pipe is sealed and slidably connected to the air supply pipe 310; The needle tube 57 is connected to the other end of the steel tube 53 , so when the steel tube 53 slides along with the driving seat 55 , the needle tube 57 at its end can penetrate the rubber cover of the negative pressure gas cylinder 4 , thereby introducing the ambient atmosphere into the negative pressure gas cylinder 4 .

[0021] In this embodiment, a propulsion device (not shown in the figure) is fixed on the base 54, and the output end of the propulsion device is connected to the driving seat 55, so as to push the driving seat 55 to slide horizontally along the base 54; A pipe protection seat 58 is fixed on the connecting frame 51 between the L-shaped plate 52 and the base 54. A sleeve is fixed in the pipe protection seat 58. The steel pipe 53 is slidably connected to the sleeve to ensure horizontal sliding of the steel pipe 53 and avoid bending deformation during operation.

[0022] As a preferred embodiment, the circulating air supply unit 2 includes: The air filter cylinder 21 is vertically fixed in the air intake bin; An exhaust seat 22 is fixed in the housing and located below the air filter cylinder 21; The wind cover 23 is sealed and connected to the lower part of the exhaust seat 22, and a core tube 6 is arranged at the inner center thereof; The air guide plate 24 is centrally fixed in the wind cover 23 and is located below the core tube 6. An annular cavity 25 is provided inside the air guide plate 24, and one end of the sampling tube 15 is connected to the annular cavity 25; The through holes 26 are circumferentially distributed on the upper end surface of the air guide disk 24, and an exhaust port 27 is opened at the bottom of the air guide disk 24; specifically, the ambient atmosphere can enter the exhaust seat 22 after preliminary filtration through the air filter cylinder 21, and the exhaust seat 22 transports the ambient atmosphere to the wind cover 23. The ambient atmosphere can enter the core tube 6 and enter the annular cavity 25 through the through holes 26 on the air guide disk 24. When gas collection operations are required, the gas guide device 5 is connected to the negative pressure gas cylinder 4 through the needle tube 57, and the atmosphere flowing in the annular cavity 25 can enter the negative pressure gas cylinder 4 through the collection tube 15, and the remaining ambient atmosphere flows into the exhaust bin 13 through the exhaust port 27.

[0023] In this embodiment, the exhaust seat 22 is provided with a fan blade, a driving motor 28 is fixed above the housing 1, a rotating shaft 29 is fixed to the output end of the driving motor 28, and the lower end of the rotating shaft 29 is connected to the fan blade; so that when the fan blade is driven by the rotating shaft 29 to rotate, it can introduce the ambient air above the exhaust seat 22 into the exhaust seat 22, so as to realize the continuous flow of the ambient air, so it can adjust the circulation flow rate of the ambient air at different speeds; The wind cover 23 and the core barrel 6 are both constructed into a conical cylinder structure, a plurality of air holes 61 are opened on the side wall of the core barrel 6, and the core barrel 6 is rotatably connected in the wind cover 23; a central shaft 62 is vertically rotatably connected in the wind cover 23, and the central shaft 62 is fixed to the core barrel 6; A plurality of spoilers are distributed on the outer wall of the core tube 6 to facilitate mixing of the ambient atmospheric turbulence in the wind hood 23 and achieve a uniform air flow effect.

[0024] In this embodiment, a built-in motor 63 is fixed in the housing 1 , and an output end of the built-in motor 63 is connected to the central shaft 62 .

[0025] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A portable atmospheric detection device, characterized in that: It includes: The casing (1) has rollers mounted at the four corners of its lower end surface; An air intake bin (11) is arranged on the upper inner side of the housing (1), and a plurality of air slots (12) are distributed around the circumference of an upper end surface of the air intake bin (11); A circulating air supply unit (2) is vertically arranged in the casing (1), and the upper end of the circulating air supply unit (2) is connected to the air inlet bin (11); An exhaust bin (13) is fixed in the housing (1) and is located directly below the circulating air supply unit (2), and an exhaust passage (14) is provided on one side of the exhaust bin (13); An air collection unit (3) is installed in the casing (1), and a collection pipe (15) is connected between the air collection unit (3) and the circulating air supply unit (2); The gas collection unit (3) comprises: A tank bin (31) is arranged in the housing (1) and located on one side of the air inlet bin (11), wherein a plurality of negative pressure gas cylinders (4) are arranged in the tank bin (31); A fixed plate (33) fixed in the housing (1), the fixed plate (33) being provided with a vertical guide rail (34) arranged vertically and a horizontal guide rail (35) arranged obliquely; A storage bin (32) is arranged in the casing (1) and located on one side of the exhaust bin (13); A rotating disk (36) is rotatably connected to the fixed plate (33), and a plurality of clamping grooves are formed on the rotating disk (36); The air guide device (5) is horizontally arranged on one side of the fixing plate (33).

2. A portable atmosphere detection device according to claim 1, characterized in that: A frame (37) is fixed outside the fixing plate (33), a connecting plate (38) is bolted to the frame (37), two laterally arranged pillars are symmetrically fixed to one side of the connecting plate (38), a positioning plate (39) is fixed between the pillars, and the air guide device (5) is connected to the positioning plate (39); One end of the air guide device (5) is connected to an air supply pipe (310), and the air supply pipe (310) is in communication with the sampling pipe (15); A fence rod (311) is fixed on the fixing plate (33) at the periphery of the rotating disk (36); the cross section of the fence rod (311) is an arc-shaped structure and is cocentric with the rotating disk (36).

3. A portable atmosphere detection device according to claim 1, characterized in that: Each of the negative pressure gas cylinders (4) in the tank warehouse (31) extracts gas from the cylinder through a vacuum pump, and a rubber cap is sealed at the bottle mouth of the negative pressure gas cylinder (4).

4. A portable atmosphere detection device according to claim 1, characterized in that: The air guide device (5) comprises: A connecting frame (51) having an L-shaped plate (52) fixed on one side thereof, wherein a steel pipe (53) is slidably connected inside the L-shaped plate (52); A base (54) is fixed to the connecting frame (51); a driving base (55) is slidably connected to the base (54); two shaft plates (56) are fixed to the driving base (55); and the steel pipe (53) is connected between the two shaft plates (56); A joint pipe connected to one end of the steel pipe (53), the other end of the joint pipe being sealingly and slidably connected to the air supply pipe (310); The needle tube (57) is connected to the other end of the steel tube (53).

5. A portable atmosphere detection device according to claim 4, characterized in that: A propulsion device is fixed on the base (54), and an output end of the propulsion device is connected to the drive seat (55), thereby pushing the drive seat (55) to slide horizontally along the base (54); A pipe protection seat (58) is fixed on the connecting frame (51) between the L-shaped plate (52) and the base (54), a sleeve is fixed inside the pipe protection seat (58), and the steel pipe (53) is slidably connected to the sleeve.

6. A portable atmosphere detection device according to claim 1, characterized in that: The circulating air supply unit (2) comprises: An air filter cylinder (21) is vertically fixed in the air inlet bin; An exhaust seat (22) is fixed in the casing and located below the air filter cylinder (21); An air hood (23) is sealed and connected to the lower side of the exhaust seat (22), and a core tube (6) is arranged at the inner center thereof; An air guide plate (24) is centrally fixed in the wind cover (23) and located below the core tube (6); an annular cavity (25) is provided inside the air guide plate (24); one end of the sampling tube (15) is connected to the annular cavity (25); The through holes (26) are circumferentially distributed on the upper end surface of the air guide plate (24), and an outlet (27) is provided below the air guide plate (24).

7. A portable atmosphere detection device according to claim 6, characterized in that: The exhaust seat (22) is provided with fan blades, a drive motor (28) is fixed above the housing (1), a rotating shaft (29) is fixed to the output end of the drive motor (28), and the lower end of the rotating shaft (29) is connected to the fan blades; The wind cover (23) and the core barrel (6) are both constructed into a conical cylinder structure; a plurality of air holes (61) are provided on the side wall of the core barrel (6); and the core barrel (6) is rotatably connected in the wind cover (23); a central shaft (62) is vertically rotatably connected in the wind cover (23); and the central shaft (62) is fixed to the core barrel (6); A plurality of spoilers are distributed on the outer wall of the core barrel (6).

8. A portable atmosphere detection device according to claim 7, characterized in that: A built-in motor (63) is fixed inside the housing (1), and an output end of the built-in motor (63) is connected to the central shaft (62).

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