A fully automatic multi-channel gas path switching atmospheric sampling device

Abstract

The application relates to the technical field of atmospheric sampling devices, and discloses a full-automatic multi-channel gas path switching atmospheric sampling device which comprises a cylinder body and a sampling container group, a collecting seat is communicatively arranged at the bottom of the cylinder body, an air inlet is arranged at the bottom of the collecting seat, a valve is arranged on the air inlet, and the sampling container group is arranged on the collecting seat. The gas flow channel is arranged, when the gas flow channel is rotated, the lifting driving device is matched to push the piston to move up and down, gas suction is realized, the gas can be controlled to pass through the output ends of different collecting seats and enter different sampling containers of the sampling container group, after the collecting seat is completely rotated for one round, the sampling process of all the sampling containers on the top of the collecting seat is realized, compared with the prior art, only one valve needs to be arranged at the air inlet of the device, no valve needs to be arranged at other positions, the flow direction of the gas is realized by the staggered arrangement of the gas flow channel and the output end holes of the collecting seat, and the use effect is extremely good.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of atmospheric sampling device, and particularly relates to a full-automatic multi-channel gas path switching atmospheric sampling device. BACKGROUND

[0002] With the rapid development of social economy, the industrialization process of human beings also develops rapidly, but the problems that come along with it are that a large amount of 'three wastes' is discharged, and various harmful gases such as sulfur dioxide and nitrogen oxides in the air pose a great threat to human health, and the living environment of human beings is deteriorating day by day. The main function of the full-automatic multi-channel gas path switching sampling system is to collect the discharged gas, and through experimental analysis on the collected gas, the composition and content of the collected gas are obtained, so that a conclusion is drawn as to whether the discharged gas needs to be treated harmlessly.

[0003] The existing multi-channel sampling system mainly controls the switching of multiple gas paths by controlling multiple electromagnetic valves. The more channels there are, the more electromagnetic valves are needed, and each electromagnetic valve needs to be powered on all the time. The disadvantages are that the volume is relatively large, and the energy consumption is relatively high. SUMMARY

[0004] The present application relates to the technical field of atmospheric sampling device, and particularly relates to a full-automatic multi-channel gas path switching atmospheric sampling device.

[0005] In order to achieve the above-mentioned purpose, the technical scheme is adopted as follows:

[0006] A full-automatic multi-channel gas path switching atmospheric sampling device, comprising a cylinder and a sampling container group, a collecting seat is communicatively arranged at the bottom of the cylinder, an air inlet is arranged at the bottom of the collecting seat, and a valve is arranged on the air inlet, the sampling container group is arranged on the collecting seat, and an input end is in communication with an output end of the collecting seat;

[0007] A mounting bracket is arranged at the top of the cylinder, a lifting driving device is arranged on the mounting bracket, a driving end of the lifting driving device is movably penetrated through the top of the cylinder, and a mounting plate is arranged on the driving end, a rotary driving device and a piston are arranged below the mounting plate, the outer side of the piston is movably abutted against the inside of the cylinder, a lifting driving rod is arranged at the driving end of the rotary driving device, a gas flow channel is arranged at the other end of the lifting driving rod, the top of the gas flow channel is in communication with the inner cavity of the cylinder, the bottom of the gas flow channel is in communication with the air inlet, and the output end position of the gas flow channel corresponds to the output end position of one group of the collecting seat. By rotating the gas flow channel, the gas can be controlled to enter different sampling containers of the sampling container group through the output ends of different collecting seats.

[0008] Preferably, the sampling container group is provided with multiple groups, one of which is a gas collection container group, a particulate matter collection container group and a microorganism collection container group, the top of the collection seat is circular, and the sampling container groups are arranged in a circular array on the top of the collection seat.

[0009] Preferably, the gas collection container group comprises a plurality of gas collection containers, both sides of the gas collection container are provided with openings, and a gas bag is arranged at the opening, the gas bag is in the shape of a spherical cap, and is initially located in the gas collection container.

[0010] Preferably, the particulate matter collection container group comprises a plurality of particulate matter collection containers, and the interior of the particulate matter collection container is provided with a plurality of particulate matter capture filter cartridges.

[0011] Preferably, the microorganism collection container group comprises a plurality of microorganism collection containers, a liquid storage tube is installed in the interior of the microorganism collection container, and a gap exists between the liquid storage tube and the inner wall of the microorganism collection container on both sides, and the gap is in communication with the input end of the microorganism collection container and the output end of the liquid storage tube, a sealing cover is arranged at the output end of the microorganism collection container, a guide plate is installed on one side of the interior of the microorganism collection container, for guiding gas into the liquid storage tube, and capturing microorganisms in the air through the liquid in the liquid storage tube.

[0012] Preferably, the top cross section of the gas flow channel is in the shape of a sector, the overall size of the gas flow channel is adapted to the inner cavity of the collection seat, three output ends of the gas flow channel are arranged at the top of the gas flow channel, and are not on the same horizontal line, and each group of output ends at the top of the collection seat is on the same horizontal line, so that only one output end of the gas flow channel can be in communication with one output end of the collection seat at the same time.

[0013] Preferably, air holes are arranged above both sides of the cylinder, the mounting plate is made of heat-conducting material, for conducting heat generated by the rotary drive device, and heat dissipation fins are installed on the top of the mounting plate.

[0014] Preferably, the liftable drive rod comprises an inner plug rod connected with the drive end of the rotary drive device and an outer sleeve rod connected with the communication part of the gas flow channel and the cylinder through a connecting rod, the inner plug rod is movably penetrated through the top of the outer sleeve rod, and the end cross section of the inner plug rod and the end cross section of the inner cavity of the outer sleeve rod are both in the shape of a rectangle.

[0015] Preferably, the top of the collection seat is provided with a multi-stage ladder structure with increasing height from outside to inside, and multiple groups of the sampling container group are arranged on the multi-stage ladder structure from outside to inside.

[0016] Preferably, the outer side of the barrel is movably provided with a limiting frame, the limiting frame is provided with a three-step structure from outside to inside, the height of each step is gradually increased, the bottom of each step is respectively abutted with the top of the sampling container group, and a pressure sensor is arranged at the abutted position, the top of the limiting frame is provided with a spring, the top of the spring is connected with the bottom of a mounting bracket, the inside of the spring is provided with a screw rod, the bottom end of the screw rod is fixedly connected with the top of the limiting frame, the other end is movably penetrated through the mounting bracket, and a nut is spirally connected with the screw rod.

[0017] Compared with the prior art, the beneficial effects of the present application are:

[0018] The gas flow channel is arranged, the piston is pushed up and down by the lifting driving device when the gas flow channel rotates, the gas suction is realized, the gas can be controlled to enter different sampling containers of the sampling container group through the output ends of different collection seats, the sampling process of all sampling containers on the top of the collection seat is realized through one rotation of the collection seat, compared with the prior art, only one valve is arranged at the air inlet of the device, no valve is arranged at other parts, the flow direction of the gas is realized by the staggered arrangement of the gas flow channel and the output end holes of the collection seat, and the use effect is excellent. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A front view of a full-automatic multi-channel gas path switching air sampling device is provided.

[0020] Figure 2 A collection seat top view of a full-automatic multi-channel gas path switching air sampling device is provided.

[0021] Figure 3 A gas flow of a full-automatic multi-channel gas path switching air sampling device is provided.

[0022] Figure 4 A collection seat and gas flow channel position relationship diagram of a full-automatic multi-channel gas path switching air sampling device is provided.

[0023] Figure 5 A schematic diagram of a full-automatic multi-channel gas path switching air sampling device applied to an unmanned aerial vehicle is provided.

[0024] Figure 6 A schematic diagram of a full-automatic multi-channel gas path switching air sampling device is provided.

[0025] In the figure: 1, cylinder body; 2, collection seat; 3, air inlet; 4, valve; 5, mounting bracket; 6, lifting driving device; 7, mounting plate; 8, piston; 9, liftable driving rod; 10, gas flow channel; 11, gas collection container; 12, particulate matter collection container; 13, microorganism collection container; 14, air bag; 15, liquid storage tube; 16, deflector; 17, air hole; 18, heat dissipation fin; 19, limiting frame; 20, spring; 21, screw rod; 22, nut; 23, air outlet; 24, unmanned aerial vehicle main body; 25, box body; 26, analysis module; 27, control processor; 28, display screen; 29, exhaust pipe; 30, rotary driving device. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. EMBODIMENT

[0027] REFERENCE Figures 1-4 An automatic multi-channel gas path switching atmospheric sampling device, comprising a cylinder body 1 and a sampling container group, the bottom of the cylinder body 1 is provided with a collection seat 2 in communication, the bottom of the collection seat 2 is provided with an air inlet 3, and the air inlet 3 is provided with a valve 4, the sampling container group is arranged on the collection seat 2, and the input end is in communication with the output end of the collection seat 2;

[0028] The top of the cylinder body 1 is provided with a mounting bracket 5, the mounting bracket 5 is provided with a lifting driving device 6, the driving end of the lifting driving device 6 is movably penetrated through the top of the cylinder body 1, and a mounting plate 7 is mounted, the lower side of the mounting plate 7 is provided with a rotary driving device 30 and a piston 8, the outer side of the piston 8 is movably abutted with the inside of the cylinder body 1, the driving end of the rotary driving device 30 is provided with a liftable driving rod 9, the other end of the liftable driving rod 9 is provided with a gas flow channel 10, the top of the gas flow channel 10 is in communication with the inner cavity of the cylinder body 1, and the bottom is in communication with the air inlet 3, the output end position of the gas flow channel 10 corresponds to one of the output end positions of the collection seat 2, by rotating the gas flow channel 10, the gas can be controlled to enter different sampling containers of the sampling container group through the output end of different collection seats 2.

[0029] When the device is in use, the gas flow channel 10 is rotated by the rotating drive device 30, and the piston 8 is pushed up and down by the lifting drive device 6 to realize the suction of the gas. The gas can be controlled to enter different sampling containers of the sampling container group through the output ends of different collection seats 2. After one complete rotation of the collection seat 2, the sampling process of all sampling containers on the top of the collection seat 2 is realized. Compared with the prior art, only one valve 4 needs to be arranged at the gas inlet 3, and no valve 4 needs to be arranged at other positions. The flow direction of the gas is realized by the staggered arrangement of the gas flow channel 10 and the output end holes of the collection seat 2, and the use effect is excellent.

[0030] In this embodiment, the sampling container group is provided with multiple groups, which are a gas collection container group, a particulate matter collection container group, and a microorganism collection container group. The top of the collection seat 2 is circular. The gas collection container group, the particulate matter collection container group, and the microorganism collection container 13 group are arranged in an annular array on the top of the collection seat 2, and the particulate matter collection container group and the microorganism collection container 13 group are sequentially arranged on the inner side of the gas collection container group.

[0031] In this embodiment, the gas collection container group includes a plurality of gas collection containers 11. The gas collection containers are provided with openings on both sides, and the openings are provided with air bags 14. The air bags 14 are in the shape of a spherical cap and are in an initial state inside the gas collection containers 11. Through the air bags 14, it can be seen from the outer surface of the gas collection container 11 whether the gas collection is complete (after collecting the gas, the air bag 14 expands outward). Because the collected gas needs to be discharged, the outer end of the gas flow channel 10 is in an open shape. The outer side of the collection seat 2 is provided with an exhaust hole 23, and the exhaust hole 23 is arranged between two adjacent gas collection containers 11. When the outer end of the gas flow channel 10 moves to this position, the gas in the cylinder 1 can be completely discharged by moving the piston 8.

[0032] In this embodiment, the particulate matter collection container group includes a plurality of particulate matter collection containers 12. The interior of the particulate matter collection containers 12 is provided with a plurality of particulate matter capture filter elements. The particulate matter capture filter elements can capture particulate matter in the air, and the gas passes through the plurality of particulate matter capture filter elements and is discharged through the top of the particulate matter collection container 12.

[0033] In the embodiment, the microorganism collection container 13 group includes a plurality of microorganism collection containers 13, the inside of the microorganism collection container 13 is provided with a liquid storage tube 15, and a gap exists between the inner wall of the two sides of the microorganism collection container 13 and the liquid storage tube 15, and the gap is communicated with the input end of the microorganism collection container 13 and the output end of the liquid storage tube 15. A sealing cover is arranged at the output end of the microorganism collection container 13, a guide plate 16 is arranged at one side of the inside of the microorganism collection container 13, for guiding the gas into the liquid storage tube 15, and the microorganism in the air is captured by the liquid in the liquid storage tube 15.

[0034] In the embodiment, the top section of the gas flow channel 10 is fan-shaped, the overall size of the gas flow channel 10 is matched with the inner cavity of the collection seat 2, three output ends of the gas flow channel 10 are arranged at the top of the gas flow channel 10, and are not on the same horizontal line, and each group of output ends at the top of the collection seat 2 is on the same horizontal line, so that only one output end of the gas flow channel 10 can be communicated with one output end of the collection seat 2 at the same time.

[0035] In the embodiment, the upper part of the two sides of the cylinder body 1 is provided with an air hole 17, the mounting plate 7 is made of heat-conducting material, for conducting the heat generated by the rotary driving device 30, and the top of the mounting plate 7 is provided with a heat dissipation fin 18. When the piston 8 moves, the upper part of the inner cavity of the cylinder body 1 also breathes (that is, the outside air enters the inner cavity of the cylinder body 1 through the air hole 17, and the air is discharged with the upward movement of the mounting plate 7), so as to promote the circulation of the air at the heat dissipation fin 18, thereby ensuring that the rotary driving device 30 inside the cylinder body 1 can also be effectively cooled.

[0036] In the embodiment, the liftable driving rod 9 includes an inner plug rod connected with the driving end of the rotary driving device 30 and an outer sleeve rod connected with the communication part of the gas flow channel 10 and the cylinder body 1 through a connecting rod, the inner plug rod is movably penetrated through the top of the outer sleeve rod, and the end section of the inner plug rod and the inner cavity end section of the outer sleeve rod are both rectangular.

[0037] In the embodiment, the top of the collection seat 2 is provided with three layers of stepped structures from outside to inside in sequence, and the gas collection container group, the particulate matter collection container group and the microorganism collection container 13 group are sequentially arranged on the three layers of stepped structures from outside to inside, and the vertical heights of the gas collection container group, the particulate matter collection container group and the microorganism collection container 13 group are sequentially increased, so as to facilitate the disassembly and installation of the single container.

[0038] In this embodiment, the outer side of the barrel 1 is movably provided with a limiting frame 19, the overall limiting frame 19 is provided with three layers of stepped structures in sequence from outside to inside with increasing height, the bottom of each stepped structure is respectively abutted with a gas collection container group, a particulate matter collection container group and a microorganism collection container 13 group, and a pressure sensor is arranged at the abutted position, the top of the limiting frame 19 is provided with a spring 20, the top of the spring 20 is connected with the bottom of the mounting bracket 5, the inside of the spring 20 is provided with a screw rod 21, the bottom end of the screw rod 21 is fixedly connected with the top of the limiting frame 19, the other end vertically movably penetrates the mounting bracket 5 and is screw-connected with a nut 22, through the limiting frame 19, the tops of all containers can be covered before the device is used, so that the containers with open top are prevented from entering dust and affecting the detection accuracy, and the pressure sensor can sense whether there is a container at the corresponding position, if there is no container, the position can be skipped during actual sampling and collection is not performed.

[0039] In this embodiment, the mounting bracket 5 is bolted on the unmanned aerial vehicle main body 24, as shown in Figure 5 . Embodiment

[0040] As shown in Figure 6 , a full-automatic multi-channel gas path switching atmospheric sampling device, comprising a box body 25, a barrel 1 and a sampling container group, compared with embodiment 1, the device is installed in the box body 25 in this embodiment, which is convenient for mobile use, the bottom of the barrel 1 is communicatively provided with a collection seat 2, the bottom of the collection seat 2 is provided with an air inlet 3, and a valve 4 is arranged on the air inlet 3, the sampling container group is arranged on the collection seat 2, and the input end is in communication with the output end of the collection seat 2, and the air inlet 3 is in communication with the outside of the box body 25;

[0041] The top of the barrel 1 is provided with a mounting bracket 5, the mounting bracket 6 is installed in the box body 25, the mounting bracket 5 is provided with a lifting driving device 6, the driving end of the lifting driving device 6 movably penetrates the top of the barrel 1 and is provided with a mounting plate 7, the lower side of the mounting plate 7 is provided with a rotating driving device 30 and a piston 8, the outer side of the piston 8 is movably abutted with the inside of the barrel 1, the driving end of the rotating driving device 30 is provided with a liftable driving rod 9, the other end of the liftable driving rod 9 is provided with a gas flow channel 10, the top of the gas flow channel 10 is in communication with the inner cavity of the barrel 1, and the bottom is in communication with the air inlet 3, the output end position of the gas flow channel 10 corresponds to one of the output end positions of the collection seat 2, by rotating the gas flow channel 10, the gas can be controlled to enter different sampling containers of the sampling container group through different output ends of the collection seat 2;

[0042] In the embodiment, the sampling container groups are provided in multiple groups, and each group of sampling container groups is a gas collection container 11, which is arranged in an annular array on the top of the collection seat 2.

[0043] In the embodiment, the top section of the gas flow channel 10 is fan-shaped, the overall size of the gas flow channel 10 is adapted to the inner cavity of the collection seat 2, and the output end of the gas flow channel 10 is provided with three output ends, which are arranged on the top of the gas flow channel 10 and are not on the same horizontal line, and each group of output ends on the top of the collection seat 2 is on the same horizontal line, so that only one output end of the gas flow channel 10 can be in communication with one of the output ends on the collection seat 2 at the same time.

[0044] In the embodiment, the upper part of the two sides of the cylinder body 1 is provided with an air hole 17, the mounting plate 7 is made of heat-conducting material, which is used to conduct the heat generated by the rotary drive device 30, and the top of the mounting plate 7 is provided with a heat dissipation fin 18, when the piston 8 moves, the upper part of the inner cavity of the cylinder body 1 also breathes (i.e. the outside air enters the inner cavity of the cylinder body 1 through the air hole 17, and the air is discharged as the mounting plate 7 moves upward), so as to promote the circulation of air at the heat dissipation fin 18, thereby ensuring that the rotary drive device 30 inside the cylinder body 1 can also be effectively cooled.

[0045] In the embodiment, the liftable drive rod 9 includes an inner plug rod connected with the driving end of the rotary drive device 30 and an outer sleeve rod connected with the communication part of the gas flow channel 10 and the cylinder body 1 through a connecting rod, the inner plug rod is movably penetrated through the top of the outer sleeve rod, and the end section of the inner plug rod and the inner cavity end section of the outer sleeve rod are both rectangular.

[0046] In the embodiment, the output end of the gas collection container 11 is connected with an exhaust pipe 29, the exhaust pipe 29 is provided with an analysis module 26, the other end of the exhaust pipe 29 penetrates through the box body 25 and is in communication with the outside of the box body 25, the analysis module 26 is connected with a display screen 28 through a control processor 27, and the display screen 28 is located outside the box body 25, the analysis module 26 analyzes the gas, and the analysis result is displayed on the display screen 28 after being processed by the control processor 27, the analysis module 26 is an atmospheric quality monitoring sensor, which can adopt a gas sensor, an electrochemical sensor, a temperature sensor, a humidity sensor, etc., compared with the embodiment 1, the embodiment is applied to a portable gas sampling and analyzing device.

[0047] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change within the technical range disclosed by the present application according to the technical solution and the inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A fully automatic multi-channel gas path switching atmospheric sampling device, characterized by: It includes a cylinder and a sampling container group. The bottom of the cylinder is connected to a collection seat. The bottom of the collection seat is provided with an air inlet, and a valve is provided on the air inlet. The sampling container group is provided on the collection seat, and the input end is connected to the output end of the collection seat. The top of the cylinder is provided with a mounting bracket, and a lifting drive device is provided on the mounting bracket. The driving end of the lifting drive device movably passes through the top of the cylinder and is installed with a mounting plate. A rotation drive device and a piston are installed below the mounting plate. The outer side of the piston movably abuts against the inside of the cylinder. The driving end of the rotation drive device is provided with a liftable drive rod, and the other end of the liftable drive rod is provided with a gas flow channel. The top of the gas flow channel is connected with the inner cavity of the cylinder, and the bottom is connected with the air inlet. The output end position of the gas flow channel corresponds to the position of one group of output ends of the collection seat. By rotating the gas flow channel, the gas is controlled to pass through the output ends of different collection seats and enter different sampling containers of the sampling container group; The sampling container group is provided with multiple groups, which are one of a gas collection container group, a particulate matter collection container group and a microorganism collection container group. The top of the collection seat is circular, and the sampling container group is arranged on the top of the collection seat in a circular array. The top cross-section of the gas flow channel is fan-shaped, and the overall size of the gas flow channel is adapted to the inner cavity of the collection seat. The gas flow channel is provided with three output ends, all arranged at the top of the gas flow channel and not on the same horizontal line. Each group of output ends on the top of the collection seat are on the same horizontal line, so that only one output end of the gas flow channel can be connected to one of the output ends of the collection seat at a time; Air holes are provided above both sides of the cylinder. The mounting plate is made of a heat-conducting material and is used to conduct heat generated by the rotary drive device. Heat dissipation fins are installed on the top of the mounting plate.

2. A fully automatic multi-channel gas path switching atmospheric sampling device according to claim 1, characterized in that: The gas collection container group includes several gas collection containers. Openings are set on both sides of the gas collection containers, and air bags are set at the openings. The air bags are spherical and are initially located in the gas collection containers.

3. The fully automatic multi-channel gas path switching atmospheric sampling device according to claim 1, characterized in that: The particle collection container group includes a plurality of particle collection containers, and a plurality of particle capture filter elements are arranged inside the particle collection containers.

4. The fully automatic multi-channel gas path switching atmospheric sampling device according to claim 3, characterized in that: The microorganism collection container group includes several microorganism collection containers, each of which is equipped with a liquid storage tube. A gap is formed between the liquid storage tube and the inner walls of the microorganism collection container on both sides, and the gap is connected to the input end of the microorganism collection container and the output end of the liquid storage tube. A sealing cover is provided at the output end of the microorganism collection container, and a guide plate is installed on one side of the sealing cover located inside the microorganism collection container for guiding gas into the liquid storage tube, thereby capturing microorganisms in the air through the liquid in the liquid storage tube.

5. The fully automatic multi-channel gas path switching atmospheric sampling device according to claim 4, characterized in that: The liftable drive rod includes an inner rod connected to the driving end of the rotary drive device and an outer rod connected to the connection point of the gas flow channel and the cylinder through a connecting rod. The inner rod is movable through the top of the outer rod, and the end section of the inner rod and the end section of the inner cavity of the outer rod are both rectangular.

6. The fully automatic multi-channel gas path switching atmospheric sampling device according to claim 2, characterized in that: The top of the collection seat is arranged in a multi-level stepped structure with increasing height from the outside to the inside, and multiple groups of sampling container groups are arranged on the multi-level stepped structure from the outside to the inside.

7. The fully automatic multi-channel gas path switching atmospheric sampling device according to claim 6, characterized in that: A limit frame is movably provided on the outside of the cylinder, and the limit frame is arranged as a multi-level three-step structure with increasing height from the outside to the inside. Each layer of the stepped structure at the bottom is respectively abutted against the top of multiple sampling container groups, and a pressure sensor is provided at the abutting position. A spring is installed on the top of the limit frame, and the top of the spring is connected to the bottom of the mounting bracket. A screw is provided inside the spring, and the bottom end of the screw is fixedly connected to the top of the limit frame, and the other end vertically movably passes through the mounting bracket and is spirally connected with a nut.

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