CN110702817A - Handheld portable air comprehensive detection equipment - Google Patents
Handheld portable air comprehensive detection equipment Download PDFInfo
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/60—Construction of the column
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/60—Construction of the column
- G01N30/6052—Construction of the column body
- G01N30/6073—Construction of the column body in open tubular form
- G01N30/6078—Capillaries
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
- G01N2001/245—Fans
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The invention provides a hand-held portable air comprehensive detection device, which comprises: the device comprises a handheld part, a gas collection propelling part, a separation part, a signal detection part, an electric power part, a data transmission part and an analysis terminal; the separation part is detachably connected with the handheld part, a channel is arranged in the separation part, the inlet end of the channel is communicated with the gas collection propelling part, and the outlet end of the channel is communicated with the signal detection part; the gas collection propelling part comprises a collection cavity, a suction piece arranged outside the collection cavity and a collection bottle arranged in the collection cavity; the gas flows from the suction piece to the collection bottle in a single direction; the collecting bottle is communicated with the channel at a position close to the inlet end, and a second one-way control piece is arranged at the position of the inlet end; the signal detection part and the data transmission part are respectively electrically connected with the power part, the signal detection part is in communication connection with the data transmission part, and the data transmission part is in communication connection with the analysis terminal. The problem of inconvenient carrying and the electric power of gas chromatograph among the prior art is in order to solve.
Description
Technical Field
The invention relates to the field of chromatography, in particular to a handheld portable air comprehensive detection device.
Background
The gas chromatograph is a gas detection device for qualitatively and quantitatively analyzing a multi-component complex mixture by using a chromatographic separation technology and a detection technology, and generally comprises a gas path system, a sample injector, a chromatographic column, a detection system and an analysis system, wherein the gas path system is generally a gas steel cylinder and is used as a gas source for applying a gas path and pressure to detection gas; the heart part of the chromatographic column chromatograph is used for separating each component in the sample; the detecting system converts the concentration or quality of each component separated from the chromatographic column into an electrical signal (such as voltage, current, etc.) which is easy to measure, and a device for processing the signal generally comprises a detecting element, an amplifier and a digital-to-analog converter; the analysis system records the detection signal of the detector and performs quantitative data processing, and is generally a desktop computer. Therefore, to realize gas detection and analysis, the required equipment occupies a large area, needs stable power supply and has certain requirements on a power system and a use space.
At present, portable rapid analysis and detection instruments are necessary to deal with pollution and air detection of complex environments such as various jungle mountains, mine caverns, airports, subways and the like, but the current portable gas chromatograph still does not change the system setting of the gas chromatograph, is generally in a heavy box type structure due to miniaturization, and still has the problems of inconvenient carrying and insufficient electric power in occasions where the mountains, mine caverns, mountains, water areas and the like are inconvenient to move or need to walk for a long distance.
The invention discloses a portable gas chromatograph with the publication number of CN 208188055U, which comprises a box body, an upper cover, a first handle and a gas chromatograph, wherein the upper cover is connected to the top end of the left side of the box body through a hinge, the first handle is welded to the central positions of the left side and the right side of the box body, a gas chromatograph main body is connected to the bottom end of the inner wall of the box body through screws, the central positions of the front side and the rear side of the inner wall of the box body are both connected with one end of a first supporting plate through a pin shaft, the left ends of the front side and the rear side of the inner wall of the box body are both connected with one end of a second supporting plate through a pin shaft, the other ends of the first supporting plate. This portable gas chromatograph can remove, but such setting still can't conveniently carry in occasions such as mountain region, mine cave, mountain range, waters, and it is unrealistic that the measurement personnel is obviously walked several kilometers mountain roads with such equipment on the back, and in the reality, for detecting environmental data, often need measurement personnel to go deep into the complex environment and detect. Therefore, the invention does not well solve the problems of inconvenient carrying and insufficient power of the gas chromatograph in the prior art.
Disclosure of Invention
The invention aims to solve the problems that a gas chromatograph in the prior art is inconvenient to carry and insufficient in power in a severe environment. The use of electric power is reduced through the combination maximize of machinery and electronic equipment, reaches the effect of power saving, and the essential part through retrenching chromatogram instrument detection under the adverse circumstances makes the volume reduce simultaneously, reaches the effect of handheld carrying.
In order to solve the technical problem, an embodiment of the present invention discloses a handheld portable air comprehensive detection device, which is characterized by comprising: the device comprises a handheld part, a gas collection propelling part, a separation part, a signal detection part, an electric power part, a data transmission part and an analysis terminal; wherein, the gas collecting propulsion component, the separation component, the signal detection component, the power component and the data transmission component are arranged on the handheld part; the separation part is detachably connected with the handheld part, a folded and bent channel is arranged inside the separation part, the inlet end of the channel is communicated with the gas collection propelling part, the outlet end of the channel is communicated with the signal detection part, and a gas chromatography stationary phase is arranged in the channel; the gas collection propelling part comprises a collection cavity, a suction piece arranged outside the collection cavity and a collection bottle arranged in the collection cavity; the suction piece is communicated with the collecting bottle, a first one-way control piece is arranged on an air path between the collecting bottle and the suction piece, and air flows from the suction piece to the collecting bottle in a one-way mode; the collecting bottle is communicated with the channel at a position close to the inlet end, a second one-way control piece for controlling the gas to flow from the collecting bottle to the channel is arranged at the position of the inlet end, and a control part of the second one-way control piece extends to the outside of the collecting cavity; the signal detection part and the data transmission part are respectively electrically connected with the power part, the signal detection part is in communication connection with the data transmission part, and the signal detection part converts the substance information flowing into the signal detection part from the channel into an electric signal to be transmitted to the data transmission part; the data transmitting part is connected with the analysis terminal in a communication way, and the analysis terminal analyzes the substance information detected by the signal detecting part.
By adopting the technical scheme, the gas collection and propulsion component with a simple mechanical structure is used for replacing a heavy gas steel cylinder to realize gas collection and gas pressure formation, the gas is pushed into the separation component to be subjected to chromatographic separation, and finally, the signal detection component sends the detected gas signal to the analysis terminal through the data sending component. The handheld part reduces the arrangement of devices needing power consumption as much as possible, the process of data analysis and calculation is completed by another analysis terminal, so that the electric power of the handheld part can be saved to the maximum extent, meanwhile, the portability is greatly improved, the difficulty of air detection lies in the collection and separation of a sample mixture, under the condition that the sample is not easy to store, a detection person only needs to collect and separate the sample in a complex environment, the process of storing the sample is converted into the storage of data, then, only the data needs to be sent, the analysis terminal is matched with the analysis to obtain a result, the load-bearing and complex analysis terminal is separated from the collection and separation part, the miniaturization and the portability of the gas chromatograph are realized, the detection person can carry out detection in an external environment, and the problem that the air quality cannot be measured in the complex environment is solved.
According to another specific embodiment of the invention, the handheld portable air comprehensive detection device disclosed by the embodiment of the invention comprises a suction piece, a cylinder body, a pushing rod and a concave piston, wherein the cylinder body is arranged on the outer wall of the collection cavity, the pushing rod is arranged in the cylinder body, the concave piston is arranged on the pushing rod, a gap capable of accommodating the concave piston to deform due to pressure change is reserved between the concave piston and the inner wall of the cylinder body, and the notch of the concave piston faces to one side close to the second one-way control piece.
By adopting the technical scheme, the second one-way control piece enables the gas to flow in one way, and the pushing rod pushes the concave piston to enable the collecting bottle to enter air and increase the pressure in the collecting bottle. Simple structure, convenient operation need not use electric power just can realize gaseous collection and pressurization moreover, have reduced the volume of electric power part, have left out the setting of circuit, realize gaseous collection and pressurization with simple mechanical mechanism, more be favorable to the use of complex environment like this, avoided the circuit to damage and the emergence of the circumstances such as no electricity, solved the inconvenient problem of carrying and electric power not enough of complex environment.
According to another specific embodiment of the invention, the embodiment of the invention discloses a handheld portable air comprehensive detection device, wherein the suction piece comprises an air blowing ball arranged on the outer wall of the collection cavity, and a third one-way control piece is arranged at the position of an air inlet on the air blowing ball.
Adopt above-mentioned technical scheme, make gaseous one-way flow through third one-way control piece, set up the gas blowing ball at gathering the chamber outer wall through the extrusion and produce gaseous messenger air admission collecting bottle pressure in the increase collecting bottle simultaneously. Simple structure, convenient operation need not use electric power just can realize gaseous collection and pressurization moreover, have reduced the volume of electric power part, have left out the setting of circuit, realize gaseous collection and pressurization with simple mechanical mechanism, more be favorable to the use of complex environment like this, avoided the circuit to damage and the emergence of the circumstances such as no electricity, solved the inconvenient problem of carrying and electric power not enough of complex environment.
According to another specific embodiment of the invention, the handheld portable comprehensive air detection device disclosed by the embodiment of the invention further comprises a fan, and the fan is electrically connected with the electric power component.
Adopt above-mentioned technical scheme, give the receiving flask through the fan and carry ambient air to the pressure air in the increase receiving flask uses the fan can continuous input air, and it is higher and the process of admitting air more even to control machinery air intake efficiency than the manpower, in order to reach input pressure stability, the fast effect of input efficiency.
According to another specific embodiment of the invention, the handheld portable air comprehensive detection device disclosed by the embodiment of the invention further comprises a pressure gauge which displays the position on the outer wall of the collection cavity, and the pressure gauge reflects the pressure in the collection bottle.
Adopt above-mentioned technical scheme, can help controlling inlet pressure through the manometer, help gaseous stable flow.
According to another specific embodiment of the invention, the handheld portable air comprehensive detection device disclosed by the embodiment of the invention further comprises an electric control component electrically connected with the electric component, and the electric control component controls the fan to pressurize according to the pressure gauge.
Adopt above-mentioned technical scheme, the fan is according to the pressure gauge pressurization and is continuously for the gas transmission pressure boost of gas collecting bottle, can avoid the pressure unstability condition that the manual control leads to through automatically controlled part, and this embodiment is applicable to the scene that needs continuously advance the appearance.
According to another embodiment of the invention, the communication connection mode of the data sending component and the analysis terminal comprises wireless connection.
By adopting the technical scheme, the data can be transmitted in real time in a wireless manner, and the analysis result can be obtained in real time.
According to another specific embodiment of the invention, the embodiment of the invention discloses a handheld portable air comprehensive detection device, the separation part is a gas chromatography filling block, and the channel is formed by a groove formed in the gas chromatography filling block.
By adopting the technical scheme, the groove of the gas chromatography filling block can be used for filling chromatographic packing, the mode has better stability,
according to another specific embodiment of the invention, the separation part is a capillary gas chromatography block, and the channel is a quartz capillary chromatographic column embedded in the capillary gas chromatography block.
By adopting the technical scheme, the capillary chromatographic column has higher theoretical plate number and better separation effect, and can provide more theoretical plates in a smaller space to realize the separation of complex samples.
According to another embodiment of the invention, the embodiment of the invention discloses a hand-held portable air comprehensive detection device, and the collection bottles comprise at least two collection bottles, and each collection bottle is respectively communicated with the suction piece and the channel.
By adopting the technical scheme, the samples in different collecting bottles 23 can be independently detected, namely, repeated experiments are carried out for verification.
Drawings
FIG. 1 is a schematic structural diagram of a hand-held portable air complex detection device in an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of the gas collection propulsion unit of a hand-held portable integrated air detection unit in accordance with an embodiment of the present invention;
FIG. 3 is an enlarged partial view of the gas collection propulsion unit of another hand-held portable integrated air detection unit in an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another handheld portable air complex detection device in the embodiment of the invention.
Description of reference numerals:
1: a hand-held portion; 2: a gas collection propulsion member; 21: a collection chamber; 211: a first one-way control; 22: a suction member; 221: a barrel; 2211: a push rod; 2212: a concave piston; 222: a balloon; 2221: an air inlet; 2222: a third one-way control; 23: a collection bottle; 24: a pressure gauge; 3: a separating member; 31: a channel; 311: a gas chromatography stationary phase; 32: an inlet end; 321: a second one-way control; 33: an outlet end; 4: a signal detection section; 5: an electric component; 6: and a data transmission section.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to these embodiments. On the contrary, the invention is described in connection with the embodiments for the purpose of covering alternatives or modifications that may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Moreover, some of the specific details have been left out of the description in order to avoid obscuring or obscuring the focus of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.
In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the present invention.
The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present embodiment, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present embodiment can be understood in specific cases by those of ordinary skill in the art.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Energy-saving glass according to embodiments of the present invention will be described below with reference to the accompanying drawings.
In order to solve the above technical problem, an embodiment of the present invention discloses a handheld portable air comprehensive detection device, as shown in fig. 1, including: the device comprises a handheld part 1, a gas collection propelling part 2, a separation part 3, a signal detection part 4, an electric power part 5, a data transmission part 6 and an analysis terminal; wherein, the gas collecting propulsion part 2, the separation part 3, the signal detection part 4, the power part 5 and the data transmission part 6 are arranged on the handheld part 1; the separation component 3 is detachably connected with the handheld part 1, a folded and bent channel 31 is arranged inside the separation component 3, the inlet end 32 of the channel 31 is communicated with the gas collection propelling component 2, the outlet end 33 of the channel 31 is communicated with the signal detection component 4, and a gas chromatography fixed phase 311 is arranged in the channel 31; the gas collection propelling part 2 comprises a collection cavity 21, a suction piece 22 arranged outside the collection cavity 21 and a collection bottle 23 arranged in the collection cavity 21; the suction piece 22 is communicated with the collection bottle 23, a first one-way control piece 211 is arranged on an air path between the collection bottle 23 and the suction piece 22, and air flows from the suction piece 22 to the collection bottle 23 in a one-way mode; the collecting bottle 23 is communicated with the channel 31 at a position close to the inlet end 32, and a second one-way control member 321 for controlling the gas to flow from the collecting bottle 23 to the channel 31 is arranged at the position of the inlet end 32, and a control part of the second one-way control member 321 extends to the outside of the collecting cavity 21; the signal detection part 4 and the data transmission part 6 are respectively electrically connected with the power part 5, the signal detection part 4 is in communication connection with the data transmission part 6, and the signal detection part 4 converts the substance information flowing into the channel 31 into an electric signal to be transmitted to the data transmission part 6; the data transmitting section 6 is connected in communication with an analysis terminal, and the analysis terminal analyzes the substance information detected by the signal detecting section 4.
Specifically, the handheld portion 1 as a base of the handheld portable integrated air detection device may be a cubic or circular box-shaped handheld, or may be in a shape composed of a handle and a portion for supporting other components as shown in fig. 1, as long as the shape is favorable for carrying by hand and is mechanically stable, and the present embodiment is not limited thereto.
More specifically, the gas collecting and propelling part 2 plays a role of collecting gas and providing gas pressure for the hand-held portable air comprehensive detection device so that the gas can smoothly pass through the separation part 3, namely, the gas collecting and propelling part plays a role of a gas carrying cylinder and a sample inlet in a general gas chromatograph. Wherein, the suction member 22 is used for actively drawing air for sampling and compressing, on one hand, the concentration of the air sample is increased to make the response of the detection component 4 clearer, on the other hand, the suction member 22 cooperates with the first one-way control member 211 and the second one-way control member 321 to pressurize the collection bottle 23, the first one-way control member 211 controls the air to enter the collection bottle 23 only from the suction member 22, and when the second one-way control member 321 is closed, the air is introduced to make the collection bottle 23 accumulate a certain air pressure and then the second one-way control member 321 is opened to make the sample smoothly pass through the separation component 3. The collecting bottle 23 functions as a sampling bottle to contain the sample on the one hand and as a pressurizing chamber to pressurize the gas collection on the other hand. The first one-way control member 211 and the second one-way control member 321 may be one-way valves or one-way air valves, and the like, and play a role of making the air move in one direction, where a specific meaning that the control portion of the second one-way control member 321 extends to the outside of the collection chamber 21 means that the control portion of the second one-way control member 321 extends to the outside of the collection chamber 21, for example, the second one-way control member 321 is one-way valve, and a user can control the second one-way control member 321 to open or close outside the collection chamber 21 when the one-way valve is opened or closed outside the collection chamber 21. Gather chamber 21 and play the effect of fixed collecting flask 23 and suction piece 22 as the casing that holds collecting flask 23 promptly to protect, gather chamber 21 and handheld portion 1 and can be for can not be dismantled the mode of being connected such as riveting or welding also can be for dismantling the connected mode such as threaded connection or joint.
More specifically, the separation component 3 is a core component of the handheld portable air comprehensive detection device, and functions as a chromatographic column in a general gas chromatograph to separate gas, so that different substances mixed in the gas can be separated and then respectively responded by the detection component 4. In the present embodiment, the detachable connection between the separating member 3 and the handle 1 may be a snap connection or a screw connection. The separation member 3 is provided with a bent-back channel 31 inside, the bent-back channel makes the total length of the channel 31 occupying a unit volume longer, the channel 31 can be directly filled with the gas chromatography stationary phase 311, the channel 31 itself can be used as a chromatographic column, or a capillary chromatographic column can be provided in the separation member 3, the hollow passage of the gas chromatography column is used as the channel 31, and the gas chromatography stationary phase 311 is coated on the inner surface of the channel 31. The gas chromatography stationary phase 311 in the channel 31 may be selected from different stationary phases according to different detection gases, for example, GDX porous high polymer chromatography stationary phase or PEG-based polyethylene glycol stationary phase is selected.
More specifically, the signal detection component 4 is a component that serves as a handheld portable air comprehensive detection device for detecting a signal of a gas sample, the signal detection component 4 may be a semiconductor gas sensor such as a tin oxide semiconductor or a titanium dioxide volume control type sensing material, an electrochemical gas sensor such as a galvanic cell type gas sensor, or a gas sensor that can respond to a gas substance without being heated, such as an infrared gas sensor, that is, the signal detection component 4 may be various detection devices commonly used in the prior art, and the specific type thereof may be selected according to design requirements, and the embodiment is not particularly limited.
The power component 5 is a lithium battery or other battery for converting chemical energy commonly used by those skilled in the art. The data transmitting unit 6 may be a communication data transmitting device having a wireless function such as a bluetooth function or a WiFi function, and is in communication connection with the analysis terminal in a wireless manner, or may be a simple storage chip such as an SD card, which stores the detection signal of the detecting unit 4 and then cooperates with the analysis terminal to read data, or may be a socket such as a USB, which is in communication connection with the analysis terminal via a data line to read data. The analysis terminal in the present embodiment may be a mobile terminal having a data reading and calculating function, such as a tablet computer, or may be a non-mobile terminal having a data reading and calculating function, such as a PC computer.
When in use, the hand-held portable air comprehensive detection device in the embodiment uses the gas collection and propulsion part 2 with simple mechanical structure to replace a heavy gas cylinder and a sample injector to realize gas collection and form gas pressure, pushes the gas into the separation part 3 to perform chromatographic separation, and finally sends the detected gas signal to the analysis terminal through the data sending part 6 by the signal detection part 4. Because the hand-held part reduces the arrangement of devices needing power consumption as much as possible, and simultaneously the process of data analysis and calculation is completed by another analysis terminal, thus, the power of the hand-held part can be saved to the maximum extent, the portability is greatly improved, and as the difficulty of air detection lies in the collection and separation of the sample mixture, under the condition that the sample is not well stored, a tester only needs to collect and separate the sample in a complex environment and convert gas sample information into data information or electric signal information, and then only needs to send or store the data, an analysis terminal required by an analysis process can be carried out after leaving from the environment to be tested, the load-bearing and complex analysis terminal is separated from the collection and separation part, the miniaturization and portability of the gas chromatograph are realized, the tester can hold the gas chromatograph to carry out detection in an external environment, and the problem that the air quality cannot be measured in the complex environment is solved.
As a preferred embodiment of the present invention, as shown in fig. 2, the suction member 22 comprises a cylinder 221 disposed on the outer wall of the collection chamber 21, a push rod 2211 disposed in the cylinder, and a concave piston 2212 disposed on the push rod 2211, wherein a space capable of accommodating the concave piston 2212 deformed by pressure changes is left between the concave piston 2212 and the inner wall of the cylinder 221, and the concave opening of the concave piston 2212 faces to the side close to the second one-way control member 321.
Specifically, there is a gap between the concave piston 2212 in the cylinder 221 and the inner wall of the cylinder 221, and when the push rod 2211 is pulled to draw out the concave piston 2212, the volume of air between the concave piston 2212 and the bottom of the cylinder 221 is increased, the pressure is reduced, and the air in the drawing direction of the concave piston 2212 is squeezed to the lower side from the periphery of the concave piston 2212. Then, the push rod 2211 is pressed to move the concave piston 2212 towards the bottom of the cylinder 221, the volume of air between the concave piston 2212 and the bottom of the cylinder 221 is reduced, the pressure is increased, the concave piston 2212 is deformed, the edge of the deformed concave piston 2212 is tightly pressed against the inner wall of the cylinder 221 to prevent air from leaking above the piston, the concave piston 2212 is continuously pressed towards the bottom of the cylinder 221, and when the air pressure is strong enough to push open the first one-way control member 211, compressed air enters the collection bottle 23.
With the above technical solution, the second one-way control member 321 is closed to make the gas flow in one direction to the collecting bottle 23 to be pressurized, and the push rod 2211 pushes the concave piston 2212 to make the collecting bottle 23 enter air and increase the pressure in the collecting bottle 23. Simple structure, convenient operation need not use electric power just can realize gaseous collection and pressurization moreover, have reduced electric power component 5 for keeping the required increase's of electric power volume, have left out the setting of circuit, realize gaseous collection and pressurization with simple mechanical mechanism, more be favorable to the use of complex environment like this, have avoided the circuit to damage and have not taken place of circumstances such as electricity, have solved the inconvenient problem of carrying and electric power not enough of complex environment.
As a preferred embodiment of the present invention, as shown in fig. 3, the suction member 22 includes an air balloon 222 disposed on the outer wall of the collection chamber 21, and a third one-way control member 2222 is disposed at the position of an air inlet 2221 on the air balloon 222.
Specifically, the third one-way control element 2222 may be a valve core or a one-way valve, and the air blowing ball 222 is pressed to make the air flow toward the collecting bottle 23, the air blowing ball 222 only enters the collecting bottle 23 from the third one-way control element 2222 through the first one-way control element 211 when air is sucked, and the air is generated by pressing the air blowing ball 222 arranged on the outer wall of the collecting cavity 21 to make the air enter the collecting bottle while increasing the pressure in the collecting bottle. Simple structure, convenient operation need not use electric power just can realize gaseous collection and pressurization moreover, have reduced electric power component 5's volume, have left out the setting of circuit, realize gaseous collection and pressurization with simple mechanical mechanism, more be favorable to complex environment's use like this, avoided the circuit to damage and the emergence of the circumstances such as no electricity, solved the inconvenient problem that carries and electric power are not enough of complex environment.
As a preferred embodiment of the invention, the suction piece 22 also comprises a fan, which is electrically connected to the electrical component 5.
Specifically, the blower in this embodiment may be a ventilator, a blower or a compressor, and may be a centrifugal type or a positive displacement type gas compressing and conveying machine, for example, a D100 type centrifugal blower or an MCL type centrifugal compressor, and this embodiment is not particularly limited, and those skilled in the art can select the blower, the blower or the compressor according to design needs. The electric power component 5 drives the fan to work, the sucked gas flows to the collecting bottle 23, and the continuous work of the fan can increase the gas density and the gas pressure. The fan can continuously input air, the air inlet efficiency is higher than that of manual control machinery, and the air inlet process is more uniform, so that the effects of stable input pressure and high input efficiency are achieved.
Further, as a preferred embodiment of the present invention, as shown in fig. 4, a pressure gauge 24 is further included to display the position on the outer wall of the collection chamber 21, and the pressure gauge 24 reflects the pressure inside the collection bottle 23.
Specifically, the pressure gauge 24 may be a conventional bourdon tube pressure gauge, a digital pressure gauge using a semiconductor pressure sensor, or the like, as long as the pressure inside the collection bottle 23 can be measured and displayed and the dial or display portion is located on the outer wall of the collection chamber 21 for easy observation, such as a MY-YBS-WB type or Y60 type pressure gauge, or the like.
With the technical scheme, the pressure gauge 24 can help to control the inlet pressure, and the stable flow of gas is controlled.
Further, as a preferred embodiment of the present invention, as shown in fig. 4, the present invention further includes an electronic control component electrically connected to the power component, and the electronic control component controls the blower to pressurize according to the pressure gauge 24.
Specifically, the electronic control unit is a microcomputer chip commonly used in the prior art, in the present embodiment, the pressure gauge 24 is a digital pressure gauge of a semiconductor pressure sensor, the electronic control unit is in communication connection and electrical connection with the pressure gauge 24, a microcomputer in the electronic control unit is set, and the microcomputer controls the fan switch according to a signal of the pressure gauge 24. The fan is according to pressure gauge 24 pressurization and is continuously for the gas transmission pressure boost of gas collecting bottle 23, can avoid the unstable condition of pressure that the manual control leads to through automatically controlled part, and this embodiment is applicable to the scene that needs to advance the appearance continuously.
In a preferred embodiment of the present invention, the communication connection between the data transmission unit 6 and the analysis terminal includes a wireless connection.
Specifically, the wireless connection mode may be a wireless connection mode commonly used by those skilled in the art, such as a bluetooth connection mode or a WIFI hotspot connection mode. It should be understood that the data transmission unit 6 may select the corresponding hardware module according to the specific wireless connection mode and design requirement. Therefore, the data can be transmitted in real time in a wireless manner, and the analysis result can be obtained from the analysis terminal in real time.
As a preferred embodiment of the present invention, the separation member 3 is a gas chromatography packing block, and the passage 31 is constituted by a groove formed inside the gas chromatography packing block.
Specifically, the groove of the gas chromatography packing block is the channel 31 for filling the chromatographic packing, so that the channel 31 itself serves as the chromatographic column, and at this time, the two ends of the channel 31 are provided with glass fibers or plugs commonly used in the art for producing the gas chromatography packing column to prevent the packing serving as the gas chromatography stationary phase 311 from being ejected, it should be understood that the groove of the gas chromatography packing block generally has a diameter of 2-5mm to facilitate filling of the packing, and at this time, the packing serving as the gas chromatography stationary phase 311 is generally a powdery substance, such as a porous polymer, a molecular sieve, and the like.
In a preferred embodiment of the present invention, the separation member 3 is a capillary gas chromatography block, and the channel 31 is a quartz capillary chromatography column embedded in the capillary gas chromatography block.
Specifically, a thin groove is formed in the separating member 3, and then a capillary column is inserted therein, the hollow portion of the capillary column substantially forms the passage 31, and the gas chromatography stationary phase 311 is coated on the inner surface of the passage 31. It is to be understood that the capillary chromatography column is generally a hollow quartz glass column tube, the diameter of the column tube is generally less than 1mm, and the inner surface of the column tube is coated with the gas chromatography stationary phase 311 to realize gas separation, and the film thickness of the gas chromatography stationary phase 311 coated in the capillary chromatography column is generally 0.1-5 μm, for example, polyethylene glycol stationary phase or polysiloxane.
The quartz capillary chromatographic column has higher theoretical plate number and better separation effect, and can provide more theoretical plates in a smaller space to realize the separation of complex samples.
As a preferred embodiment of the present invention, the collection bottle 23 comprises at least two, each collection bottle 23 being in communication with the suction piece 22 and the channel 31, respectively.
Specifically, the collection bottles 23 are arranged in the collection cavity 21, the collection bottles 23 are communicated with the suction piece 22 through a plurality of pipelines converging on one path, the first one-way control piece 211 is arranged on a part converging on one path and can also be arranged on each branch path respectively, the collection bottles 23 are communicated with the channel 31 respectively, and a second one-way control piece 321 is arranged on each branch path communicated with the channel 31.
When the device is used, independent detection can be carried out on samples in different collection bottles 23, namely, the experiments are repeated for verification.
While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a more detailed description of the invention, taken in conjunction with the specific embodiments thereof, and that no limitation of the invention is intended thereby. Various changes in form and detail, including simple deductions or substitutions, may be made by those skilled in the art without departing from the spirit and scope of the invention.
Claims (10)
1. A handheld portable air comprehensive detection device, comprising: the device comprises a handheld part, a gas collection propelling part, a separation part, a signal detection part, an electric power part, a data transmission part and an analysis terminal; wherein,
the gas collection propelling part, the separation part, the signal detection part, the power part and the data transmission part are arranged on the handheld part;
the separation component is detachably connected with the handheld part, a folded and bent channel is arranged inside the separation component, the inlet end of the channel is communicated with the gas collection propelling component, the outlet end of the channel is communicated with the signal detection component, and a gas chromatography stationary phase is arranged in the channel;
the gas collection propelling part comprises a collection cavity, a suction piece arranged outside the collection cavity and a collection bottle arranged in the collection cavity; and,
the suction piece is communicated with the collecting bottle, a first one-way control piece is arranged on an air path between the collecting bottle and the suction piece, and air flows from the suction piece to the collecting bottle in one way;
the collecting bottle is communicated with the channel at a position close to the inlet end, a second one-way control piece for controlling the gas to flow from the collecting bottle to the channel is arranged at the position of the inlet end, and a control part of the second one-way control piece extends to the outside of the collecting cavity;
the signal detection part and the data transmission part are respectively electrically connected with the power part, the signal detection part is in communication connection with the data transmission part, and the signal detection part converts the substance information flowing into the signal detection part from the channel into an electric signal and transmits the electric signal to the data transmission part;
the data transmitting part is in communication connection with the analysis terminal, and the analysis terminal analyzes the substance information detected by the signal detecting part.
2. A hand-held portable air complex detection apparatus according to claim 1, wherein the suction member comprises a cylinder disposed on an outer wall of the collection chamber, a push rod disposed in the cylinder, and a concave piston disposed on the push rod, a space capable of accommodating the concave piston deformed by pressure change is left between the concave piston and the inner wall of the cylinder, and the concave piston has a notch facing to a side close to the second one-way control member.
3. The hand-held portable air comprehensive detection device as claimed in claim 1, wherein the suction member comprises an air blowing balloon arranged on the outer wall of the collection cavity, and a third one-way control member is further arranged on the air blowing balloon at the position of an air inlet.
4. A hand-held portable air complex detection apparatus according to claim 1, wherein said suction member further comprises a blower, said blower being electrically connected to said electrical power unit.
5. The hand-held portable air complex detection device according to claim 4, further comprising a pressure gauge showing a location on an outer wall of the collection chamber, the pressure gauge reflecting a pressure within the collection bottle.
6. The hand-held portable air comprehensive detection device according to claim 5, further comprising an electric control component electrically connected with the electric component, wherein the electric control component controls the blower to pressurize according to the pressure gauge.
7. The hand-held portable air complex detection device according to claim 1, wherein the communication connection mode of the data transmission component and the analysis terminal comprises wireless connection.
8. The apparatus of claim 1, wherein the separation member is a gas chromatography packing block, and the channel is formed by a groove formed inside the gas chromatography packing block.
9. The hand-held portable air comprehensive detection device according to claim 1, wherein the separation component is a capillary gas chromatography block, and the channel is a quartz capillary chromatography column embedded inside the capillary gas chromatography block.
10. A hand-held portable air complex detection apparatus according to claim 1, wherein said collection bottles comprise at least two, each of said collection bottles being in communication with said suction member and said passageway, respectively.
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| CN110702817B (en) | 2023-06-13 |
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