Sample storing and sampling device suitable for olfactory test

Abstract

The utility model discloses a sample storing and sampling device suitable for sniffing test, which comprises a gas sample sucking and releasing module, a gas storage module and a controller, the gas sample sucking and releasing module is directly or indirectly communicated with the gas output end of a gas chromatograph, and comprises a needle cylinder injector and a driving source, the gas storage module comprises a rotating frame, a rotating motor and a plurality of gas sample storage bottles, the gas sample storage bottles are arranged on the rotating frame, a plurality of bottle clamping seats for fixing the gas sample storage bottles are annularly arranged on the rotating frame, and the plurality of bottle clamping seats are horizontally arranged on the rotating frame and are circumferentially and uniformly arrayed; the gas sample suction and release module injects gas samples into the gas sample storage bottle after a certain unit time period to form a plurality of gas samples stored in different time periods, and a user can subsequently extract the gas samples in any time period through the gas sample suction and release module for mixing, namely the gas sample suction and release device can be provided with a sensory analysis and evaluation method of various combination modes such as single component, multiple components and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of odor treatment, and particularly relates to a sample storage and sampling device suitable for olfactory testing. Background Art

[0002] Polluted waters that emit odors can seriously affect the living environment of nearby residents and may even endanger the health of residents. It is necessary to solve the source of the odor to improve the living quality of residents. However, in the process of treating odors, there are often difficulties in identifying the source of the odor, that is, it is impossible to conduct target screening of odor substances.

[0003] To solve the above problems, the patent document with the application number 202320907239.1 discloses an odor-active substance analysis mass spectrometry and sensory combined test system. The system includes a gas chromatograph, a splitter, a mass spectrometry detector, a modulator, and a sensory test device. The gas chromatograph has an injection port, a gas chromatography column, and an oven. An injection needle is provided at the injection port.

[0004] The above-mentioned prior art controls the flow path of the components separated by the gas chromatography column through a splitter to achieve single-component selection, so that the selected components enter the sensory tester for sensory testing, avoiding interference between other components. The operation is convenient, which helps to improve the test efficiency and test accuracy. At the same time, the splitter can also divert multiple components separated by the chromatographic column within a specific time period into the modulator. The modulator combines the multiple components, and the combined components enter the sensory tester for sensory testing, thereby realizing the odor sensory testing of the comprehensive components.

[0005] However, the prior art discloses that its splitter is a three-channel flow path controller. The main idea is that different components have different retention times in the gas chromatography column. The flow direction and flow rate of the separated components can be controlled by the splitter, so as to select a single component or all the components separated within a certain period of time. That is, the prior art can only handle the components within a certain period of time. For example, if two or more components with a long time interval need to be combined and the intermediate separated components do not participate in the mixing, it is difficult for the prior art to achieve this. Therefore, there is still room for improvement in this test system. Summary of the Invention

[0006] In view of the problems in the related art, the utility model provides a sample storage and sampling device suitable for olfactory testing to overcome the above-mentioned technical problems existing in the prior art.

[0007] The technical solution of the utility model is realized as follows:

[0008] A sample storage and sampling device suitable for olfactory testing includes an air intake and exhaust module, a gas storage module, and a controller;

[0009] The air sampling and releasing module is directly or indirectly communicated with the gas output end of the gas chromatograph;

[0010] The air sampling and releasing module includes a syringe and a driving source electrically connected to a controller, and the gas storage module includes a plurality of gas sample storage bottles;

[0011] The syringe includes a push rod, a barrel member and a needle. The interior of the barrel member has a barrel cavity for containing gas. One side of the barrel cavity is open for the push rod to extend and slide in. The other side of the barrel cavity is fixed and communicated with the needle, and the barrel member and the needle remain relatively stationary;

[0012] The barrel member has a connecting pipe protruding from the outer surface. The connecting pipe is communicated with the barrel cavity, and the connecting pipe is communicated to the gas output end of the gas chromatograph. The inner end of the connecting pipe is flush with the inner surface of the barrel cavity to avoid affecting the sliding movement of the push rod;

[0013] The driving source drives the whole syringe to move so that the needle pierces into or withdraws from the gas sample storage bottle and drives the push rod to slide in the barrel cavity;

[0014] The gas storage module further includes a rotating rack and a rotating motor;

[0015] A plurality of the gas sample storage bottles are arranged on a rotating rack. The rotating rack is provided with a rotating motor electrically connected to a controller. The rotating motor drives the rotating rack to rotate. The rotating rack is provided with a plurality of bottle holders for fixing the gas sample storage bottles. A plurality of the bottle holders are horizontally arranged on the rotating rack and are circumferentially and uniformly arrayed.

[0016] The angle of each rotation of the rotating motor makes a certain gas sample storage bottle align with the needle, and then the operation of extracting or outputting the gas sample can be carried out. When the output end of the gas chromatograph conveys the separated substance gas to the syringe, the push rod of the air sampling and releasing module slides in a direction away from the needle, so that the inner pipe orifice of the connecting pipe is exposed inside the barrel cavity. After a certain unit time period (such as 1 minute, 5 minutes, etc.), the gas sample is injected into the gas sample storage bottle, forming gas samples stored in different time periods. Until the gas chromatograph completes the separation, then according to actual needs, the user can extract the gas sample at any time period through the air sampling and releasing module for mixing. That is, the utility model can set a sensory analysis and evaluation method with multiple combination modes such as single-component, multi-component, and comprehensive component, etc., to improve the recognition accuracy of the olfactory test.

[0017] Specifically, an elastic injection rubber stopper is provided at the mouth of the gas sample storage bottle for the injection needle to pierce. After the injection needle withdraws from the gas sample storage bottle, the elastic injection rubber stopper seals itself. The position of the gas sample storage bottle of the present utility model is fixed. Since the needle of the present utility model only makes a short-range horizontal linear motion with a small movement deviation, and the mouth of the gas sample storage bottle is a soft rubber stopper, it is not necessary to pursue high-precision alignment when the needle pierces the gas sample storage bottle each time.

[0018] Preferably, the gas suction and discharge module further includes a base shell, and the driving source includes a first motor and a second motor;

[0019] On both sides of the top surface of the base shell, there are a first fixed shell seat and a second fixed shell seat. Between the first fixed shell seat and the second fixed shell seat, there are a moving seat and a lead screw. The two ends of the lead screw are respectively fixed to the first fixed shell seat and the second fixed shell seat;

[0020] The moving seat is provided with a threaded hole adapted to the lead screw, and the lead screw is screwed into the threaded hole and penetrates through the moving seat;

[0021] The first fixed shell seat is equipped with a clamping member for clamping the cylinder member. The clamping member and the cylinder member remain relatively stationary. The clamping member is installed on a moving column, and the moving column is directly or indirectly connected to the first motor and driven by it. On the top surface of the first fixed shell seat, there is a long travel hole. The moving column passes through the long travel hole in the vertical direction. The exposed upper part of the moving column is connected to the clamping member, and the lower part of the moving column is connected to the first motor. The first motor drives the moving column to make a horizontal linear motion in the long travel hole, that is, the cylinder member and the needle move horizontally in a straight line together.

[0022] The first end of the lead screw extends into the interior of the first fixed shell seat, and the second end of the lead screw extends into the interior of the second fixed shell seat. The bottom of the second fixed shell seat is open and communicates with the interior of the base shell. The second motor is placed inside the base shell. The second motor is directly or indirectly connected to the second end of the lead screw and drives the lead screw to rotate, thereby driving the moving seat to make a horizontal linear motion along the lead screw. The moving seat clamps the outer end of the push rod to drive the push rod;

[0023] When the first motor and the second motor are started together to drive the cylinder member and the push rod to have the same displacement, the syringe needle pierces into or withdraws from the gas sample storage bottle; when the first motor is turned off and the second motor is started to drive the push rod to slide to suck in or output gas.

[0024] Preferably, a clamping slot is provided on one side of the moving seat facing the syringe. The top surface of the clamping slot is open and a U-shaped opening is provided facing the side wall of the syringe. A clamping piece portion is provided at the tail end of the push rod, and the clamping piece portion is inserted and fixed in the clamping slot, and the push rod and the moving seat are relatively stationary.

[0025] The movement driven by the motor is inevitably accompanied by vibration problems. Therefore, preferably, two stabilizing rods are fixed between the first fixed housing seat and the second fixed housing seat. The two stabilizing rods are respectively located on both sides of the lead screw. The moving seat is provided with through holes adapted to the two stabilizing rods, and the two stabilizing rods pass through the moving seat through the through holes. The design of the stabilizing rods makes the horizontal linear movement of the gas injection moving seat more stable, and further makes the movement trajectory of the gas injection needle more accurate, facilitating alignment and insertion into the gas sample storage bottle.

[0026] More preferably, the stabilizing rod on the same side as the long stroke hole is designated as the first stabilizing rod. The end of the first stabilizing rod extends into the interior of the first fixed housing seat. A connecting seat is provided at the bottom of the moving column. The connecting seat is connected to and driven by the first motor. The connecting seat has a through hole adapted to the first stabilizing rod, and the connecting seat forms a sliding connection with the first stabilizing rod. That is, the first stabilizing rod is not only used to stabilize the movement of the gas injection moving seat, but also used to stabilize the movement of the moving column.

[0027] Preferably, the bottle clamping seat includes two relatively arranged arc-shaped clips. A vertically arranged abutting wall is provided on one side of the bottle clamping seat close to the center of the rotating frame. The gas sample storage bottle is horizontally clamped in the bottle clamping seat;

[0028] The mouth of the gas sample storage bottle placed on the rotating frame faces the peripheral direction. The bottle body is surrounded and clamped by the two arc-shaped clips, and the bottom of the bottle abuts against the abutting wall to withstand the force when the needle pierces the gas sample storage bottle.

[0029] Preferably, the controller is connected to a human-computer interaction module. The human-computer interaction module can be a display screen, keyboard, mouse, touch screen display, etc., which facilitates the detection personnel to monitor and view various real-time data, set parameters as needed, and view the start / stop status of the function modules.

[0030] Preferably, the rotating frame includes a support shaft arranged in the vertical direction and at least one mounting disc. The support shaft passes through the center position of the mounting disc. The support shaft and the mounting disc are relatively stationary. The support shaft is directly or indirectly driven by the rotating motor to rotate;

[0031] A plurality of the bottle clamping seats are installed on the top surface of the mounting disc. After the gas sample storage bottle is clamped in the bottle clamping seat, its mouth protrudes out of the edge of the mounting disc;

[0032] A number of the bottle holders are marked with different numbers (such as sequential numbers starting from the number 1 or alphabetical order marks starting from the letter A, etc.) and their positions are recorded in the system. Taking the digital numbering as an example, when starting to collect gas samples, the rotary rack rotates the bottle holder with the starting number to the position of the gas injection needle, and rotates sequentially for collection. This design facilitates recording and finding the corresponding gas samples, and also facilitates subsequent multi-component mixing operations. For example, when specifying the mixing of the gas samples numbered 4 and numbered 21, the numbers 4 and 21 can be selected by clicking through the human-machine interaction system. The system controls the rotation of the rotation drive motor and the lifting of the lifting push rod according to the position records of the bottle holders, and aligns the gas storage bottles on the bottle holders numbered 4 and 21 with the needle in sequence, and then the component mixing can be carried out.

[0033] Preferably, at least two of the mounting discs are provided, namely an upper mounting disc and a lower mounting disc. The two mounting discs are fixed on the support shaft and are distributed up and down, increasing the number of gas samples that can be stored;

[0034] At least one lifting push rod is fixedly connected to the bottom of the lower mounting disc. The moving rod of the lifting push rod is fixedly connected to the bottom of the lower mounting disc. The lifting push rod drives the upper mounting disc and the lower mounting disc to lift. The fixed seat of the lifting push rod is installed and fixed on a mounting platform, and the rotation motor is fixedly connected to the bottom of the mounting platform.

[0035] Preferably, a circumferential slide rail with the same center is provided on the bottom of the lower mounting disc. Three lifting push rods are provided and are evenly distributed circumferentially on the mounting platform. The end of the moving rod of the lifting push rod is slidably engaged with the circumferential slide rail. This design makes the lifting of the mounting disc more stable and accurate.

[0036] Preferably, a hollow chromatographic column is connected and communicated between the output end of the gas chromatograph and the connecting pipe;

[0037] A connecting screw is provided at a position near the tail end of the hollow chromatographic column. A through long hole is opened along the length direction in the middle of the connecting screw. An expansion sealing ring is installed at the end of the threaded section of the connecting screw. The hollow chromatographic column is inserted from the head to the tail of the connecting screw through the through long hole;

[0038] The inner side wall of the connecting pipe is provided with an internal thread adapted to the connecting screw. The inner side wall of the expanded sealing ring after heating abuts against the outer side wall of the hollow chromatographic column, and the outer side wall abuts against the inner side wall of the connecting pipe, thereby realizing sealed contact and preventing gas samples from leaking; the end of the hollow chromatographic column does not protrude beyond the inner surface of the barrel cavity and exceeds the expanded sealing ring by 2-4 mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a schematic structural diagram of the present invention;

[0040] Figure 2 One of the structural schematic diagrams of the gas injection module of the present utility model;

[0041] Figure 3 Another structural schematic diagram of the gas injection module of the present utility model;

[0042] Figure 4 Structural schematic diagram of the gas storage module of the present utility model;

[0043] Figure 5 Combined structural schematic diagram of the gas sample storage bottle, bottle holder and upper mounting disc of the present utility model;

[0044] Figure 6 Combined structural schematic diagram of the connecting pipe and the hollow chromatographic column of the present utility model.

[0045] Reference numerals

[0046] A, gas sampling and releasing module; B, gas storage module; C, gas chromatograph;

[0047] 1, hollow chromatographic column;

[0048] 2, connecting screw; 201, expansion sealing ring;

[0049] 20, base shell; 21, second fixed shell seat; 22, lead screw; 23, first stabilizing rod; 24, moving seat; 2401, clamping slot; 25, push rod; 26, clamping member; 27, first fixed shell seat; 2701, long stroke hole; 28, cylinder member; 2801, connecting pipe; 29, moving column; 30, connecting seat; 31, first motor;

[0050] 32, gas sample storage bottle; 33, bottle holder; 3301, arc clamp; 3302, wall abutment; 34, support shaft; 35, upper mounting disc; 36, lower mounting disc; 37, lifting push rod; 38, mounting platform; 39, rotating motor. Detailed implementation manners

[0051] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0052] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model.

[0053] Referring to Figures 1 to 6 , a sample storage and sampling device suitable for olfactory testing, comprising an air intake and exhaust module, a gas storage module B, and a controller. The controller is electrically connected to a display, a keyboard, and a mouse serving as a human-machine interaction module.

[0054] The air intake and exhaust module is directly or indirectly communicated with the gas output end of a gas chromatograph. In this embodiment, a hollow chromatographic column 1 is connected and communicated between the output end of the gas chromatograph and a connecting pipe 2801.

[0055] At a position near the tail end of the hollow chromatographic column 1, a connecting screw 2 is provided. A through long hole is opened along the length direction in the middle of the connecting screw 2. An expansion sealing ring 201 is installed at the end of the threaded section of the connecting screw 2. The hollow chromatographic column 1 is inserted from the head to the tail of the connecting screw 2 through the through long hole.

[0056] The inner side wall of the connecting pipe 2801 is provided with an internal thread adapted to the connecting screw 2. The inner side wall of the heated expansion sealing ring 201 abuts against the outer side wall of the hollow chromatographic column 1, and the outer side wall abuts against the inner side wall of the connecting pipe 2801, thereby achieving a sealed contact to prevent the leakage of the gas sample; the end of the hollow chromatographic column 1 does not protrude beyond the inner surface of the cylinder cavity and exceeds the expansion sealing ring by 3 mm.

[0057] The air intake and exhaust module includes a syringe and a drive source electrically connected to the controller; the gas storage module B includes a number (48) of gas sample storage bottles 32.

[0058] The syringe includes a push rod 25, a barrel member 28, and a needle. The interior of the barrel member 28 has a cylinder cavity for accommodating gas. One side of the cylinder cavity is open for the push rod 25 to extend and slide therein, and the other side of the cylinder cavity is fixed and communicated with the needle. The barrel member 28 and the needle remain relatively stationary.

[0059] The cylinder member 28 has a nozzle 2801 protruding from the outer surface. The nozzle 2801 communicates with the cylinder cavity and is connected to the gas output end of the gas chromatograph. The inner end of the nozzle 2801 is flush with the inner surface of the cylinder cavity to avoid affecting the sliding movement of the push rod 25.

[0060] The driving source drives the whole syringe to move so that the needle penetrates into or withdraws from the gas sample storage bottle 32 and drives the push rod 25 to slide in the cylinder cavity.

[0061] The gas storage module B further includes a rotating frame and a rotating motor 39.

[0062] A number of (48) gas sample storage bottles 32 are arranged on a rotating frame. The rotating frame is provided with a rotating motor 39 electrically connected to the controller. The rotating motor 39 drives the rotating frame to rotate. The rotating frame is provided with a number of (48) bottle holders 33 for fixing the gas sample storage bottles 32. A number of the bottle holders 33 are horizontally arranged on the rotating frame and are evenly arrayed in a circumferential direction.

[0063] Each time the rotating motor 39 rotates by an angle that aligns a certain gas sample storage bottle 32 with the needle, the operation of extracting or outputting the gas sample can be performed. In this embodiment, the angle of each rotation of the rotating motor 39 is 15°.

[0064] When the output end of the gas chromatograph transports the separated substance gas to the syringe, the push rod 25 of the gas sample suction and discharge module slides in a direction away from the needle, so that the inner nozzle of the nozzle 2801 is exposed inside the cylinder cavity. After a certain unit time period (such as 1 minute, 5 minutes, etc.), the gas sample is injected into the gas sample storage bottle 32 to form multiple gas samples stored at different time periods until the gas chromatograph completes the separation. Then, according to actual needs, the user can extract the gas sample at any time period through the gas sample suction and discharge module for mixing. That is, the present utility model can set various combination modes of sensory analysis and evaluation methods such as single-component, multi-component, and comprehensive component modes to improve the recognition accuracy of the olfactory test.

[0065] Specifically, the bottle mouth of the gas sample storage bottle 32 is provided with an elastic injection rubber stopper for the injection needle to penetrate. After the injection needle withdraws from the gas sample storage bottle 32, the elastic injection rubber stopper seals itself.

[0066] The gas sample to be smelled after extraction can be manually transferred to the smelling port, or a gas delivery device can be additionally provided to transport the gas sample to the smelling port.

[0067] In this embodiment, the gas sample suction and discharge module further includes a base shell 20, and the driving source includes a first motor 31 and a second motor.

[0068] On both sides of the top surface of the base shell 20, there are a first fixed shell seat 27 and a second fixed shell seat 21. Between the first fixed shell seat 27 and the second fixed shell seat 21, there are a moving seat 24 and a lead screw 22. The two ends of the lead screw 22 are respectively fixed to the first fixed shell seat 27 and the second fixed shell seat 21.

[0069] The moving seat 24 is provided with a threaded hole adapted to the lead screw 22, and the lead screw 22 is screwed into the threaded hole and penetrates through the moving seat 24.

[0070] The first fixed shell seat 27 is equipped with a clamping member 26 for clamping the cylinder member 28. The clamping member 26 and the cylinder member 28 remain relatively stationary. The clamping member 26 is installed on a moving vertical column 29. The moving vertical column 29 is directly or indirectly connected to the first motor 31 and is driven by it. On the top surface of the first fixed shell seat 27, there is a long travel hole 2701. The moving vertical column 29 passes through the long travel hole 2701 in the vertical direction. The exposed upper part of the moving vertical column 29 is connected to the clamping member 26, and the lower part of the moving vertical column 29 is connected to the first motor 31. The first motor 31 drives the moving vertical column 29 to perform a horizontal linear motion in the long travel hole 2701, that is, the cylinder member 28 and the needle move horizontally in a straight line together.

[0071] The first end of the lead screw 22 extends into the interior of the first fixed shell seat 27, and the second end of the lead screw 22 extends into the interior of the second fixed shell seat 21. The bottom of the second fixed shell seat 21 is open and communicates with the interior of the base shell 20. The second motor is placed inside the base shell 20. The second motor is directly or indirectly connected to the second end of the lead screw 22 and drives the lead screw 22 to rotate, thereby driving the moving seat 24 to perform a horizontal linear motion along the lead screw 22. The moving seat 24 clamps the outer end of the push rod 25 to drive the push rod 25;

[0072] When the first motor 31 and the second motor are started together to drive the cylinder member 28 and the push rod 25 to have the same displacement, the syringe penetrates into or withdraws from the gas sample storage bottle 32; when the first motor 31 is turned off and the second motor is started to drive the push rod 25 to slide to draw in or output gas.

[0073] In this embodiment, on the side of the moving seat 24 facing the syringe, there is a clamping slot 2401. The top surface of the clamping slot 2401 is open and a U-shaped opening is provided facing the side wall of the syringe. The tail end of the push rod 25 is provided with a clamping piece part, and the clamping piece part is inserted and fixed in the clamping slot 2401. The push rod 25 and the moving seat 24 are relatively stationary.

[0074] The movement driven by the motor will inevitably have vibration problems. Therefore, in this embodiment, two stabilizing rods are fixed between the first fixed housing base 27 and the second fixed housing base 21. The two stabilizing rods are respectively located on both sides of the lead screw 22. The moving seat 24 is provided with through holes adapted to the two stabilizing rods, and the two stabilizing rods penetrate through the moving seat 24 through the through holes. The design of the stabilizing rods makes the horizontal linear movement of the gas injection moving seat 24 more stable, and further makes the movement trajectory of the gas injection needle more accurate, facilitating alignment and piercing into the gas sample storage bottle 32.

[0075] In this embodiment, the stabilizing rod on the same side as the long travel hole 2701 is set as the first stabilizing rod 23. The end of the first stabilizing rod 23 extends into the interior of the first fixed housing base 27. The bottom of the moving column 29 is provided with a connecting seat 30. The connecting seat 30 is connected to and driven by the first motor 31. The connecting seat 30 has a through hole adapted to the first stabilizing rod 23, and the connecting seat 30 forms a sliding connection with the first stabilizing rod 23. That is, the first stabilizing rod 23 is not only used to stabilize the movement of the gas injection moving seat 24, but also used to stabilize the movement of the moving column 29.

[0076] In this embodiment, the bottle clamping seat 33 includes two oppositely arranged arc-shaped clamps 3301. One side of the bottle clamping seat 33 close to the center of the rotating frame is provided with a vertically arranged abutting wall 3302. The gas sample storage bottle 32 is horizontally clamped in the bottle clamping seat 33.

[0077] The mouth of the gas sample storage bottle 32 placed on the rotating frame faces the peripheral direction. The bottle body is surrounded and clamped by the two arc-shaped clamps 3301, and the bottom of the bottle abuts against the abutting wall 3302 to bear the force when the needle pierces into the gas sample storage bottle 32.

[0078] In this embodiment, the rotating frame includes a support shaft 34 arranged in the vertical direction and two mounting discs, namely an upper mounting disc 35 and a lower mounting disc 36. The two mounting discs are fixed to the support shaft 34 and are distributed up and down. The support shaft 34 penetrates through the center position of the mounting disc. The support shaft 34 and the mounting disc are relatively stationary, and the support shaft 34 is directly or indirectly driven by the rotating motor 39 to rotate;

[0079] A number of (24) the bottle clamping seats 33 are installed on the top surface of each mounting disc. After the gas sample storage bottle 32 is clamped in the bottle clamping seat 33, its mouth protrudes beyond the edge of the mounting disc; A number of (48) the bottle clamping seats 33 are all marked with different numbers. In this embodiment, the numbers are 1 to 48.

[0080] Three lifting push rods 37 are fixedly connected to the bottom of the lower mounting disc 36. In this embodiment, a circumferential slide rail with the same center is provided on the bottom of the lower mounting disc 36. There are three lifting push rods 37, which are evenly distributed in a circle on the mounting platform 38. The end of the moving rod of the lifting push rod 37 is slidably engaged with the circumferential slide rail. The lifting push rod 37 drives the upper mounting disc 35 and the lower mounting disc 36 to lift. The fixed seat of the lifting push rod 37 is fixedly installed on a mounting platform 38, and the bottom of the mounting platform 38 is fixedly connected with the rotary motor 39.

[0081] In practical applications, conventional components such as a flow regulating valve and an air pump can also be added between the output end of the gas chromatograph and the connecting pipe 2801. The flow regulating valve can be an EPC electronic pressure controller.

[0082] According to the disclosure and teachings of the above specification, those skilled in the art of the present invention can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims

1. A sample storage and sampling device suitable for sniffing test, characterized in that: It includes a gas suction and discharge sample module, a gas storage module and a controller; The gas sampling module is directly or indirectly connected to the gas output end of the gas chromatograph; The gas sampling module includes a syringe and a driving source electrically connected to a controller, and the gas storage module includes a plurality of gas sample storage bottles; The syringe syringe comprises a push rod, a barrel and a needle. The barrel has a barrel cavity for accommodating gas. One side of the barrel cavity is open for the push rod to slide in. The other side of the barrel cavity is fixed and connected to the needle. The barrel and the needle remain relatively still. The cylinder has a connecting pipe protruding from the outer surface, the connecting pipe is communicated with the cylinder cavity, the connecting pipe is connected to the gas output end of the gas chromatograph, and the inner end of the connecting pipe is flush with the inner surface of the cylinder cavity; The driving source drives the syringe barrel to move as a whole so that the needle can penetrate into or withdraw from the gas sample storage bottle and drives the push rod to slide in the barrel cavity; The gas storage module also includes a rotating frame and a rotating motor; Several of the gas sample storage bottles are placed on a rotating frame, and the rotating frame is provided with a rotating motor electrically connected to a controller, and the rotating motor drives the rotating frame to rotate. The rotating frame is provided with several bottle holders for fixing the gas sample storage bottles, and several of the bottle holders are horizontally placed on the rotating frame and are evenly arrayed around the circumference.

2. The sample storage and sampling device suitable for sniffing test according to claim 1, characterized in that: The air suction and discharge sample module also includes a base shell, and the driving source includes a first motor and a second motor; A first fixed shell seat and a second fixed shell seat are provided on both sides of the top surface of the base shell, a movable seat and a screw rod are provided between the first fixed shell seat and the second fixed shell seat, and two ends of the screw rod are respectively fixed to the first fixed shell seat and the second fixed shell seat; The movable seat is provided with a threaded hole adapted to the screw rod, and the screw rod is screwed into the threaded hole and passes through the movable seat; The first fixed housing seat is provided with a clamping member for clamping the cylinder member, the clamping member and the cylinder member remain relatively stationary, the clamping member is installed on a moving column, the moving column is directly or indirectly connected to and driven by the first motor, a long stroke hole is provided on the top surface of the first fixed housing seat, the moving column passes through the long stroke hole in a vertical direction, the exposed upper part of the moving column is connected to the clamping member, the lower part of the moving column is connected to the first motor, and the first motor drives the moving column to perform horizontal linear motion in the long stroke hole; The second end of the screw rod extends into the interior of the second fixed housing seat, the bottom of the second fixed housing seat is open and communicated with the interior of the base shell, the second motor is arranged inside the base shell, the second motor is directly or indirectly connected to the second end of the screw rod and drives the screw rod to rotate, and then drives the moving seat to perform horizontal linear motion along the screw rod, and the moving seat clamps the outer end of the push rod to drive the push rod; When the first motor and the second motor are started together to drive the cylinder and the push rod to have the same displacement, the syringe will pierce into or withdraw from the gas sample storage bottle; The first motor is turned off, and the second motor is turned on to drive the push rod to slide to draw in or output gas.

3. The sample storage and sampling device suitable for sniffing test according to claim 2, characterized in that: The movable seat is provided with a clamping slot on one side facing the syringe, the top surface of the clamping slot is open and a U-shaped opening is provided on the side wall facing the syringe; The rear end of the push rod is provided with a clip portion, the clip portion is inserted and fixed in the clamping gap, and the push rod and the moving seat are relatively stationary.

4. The sample storage and sampling device suitable for sniffing test according to claim 2 or 3, characterized in that: Two stabilizing rods are fixed between the first fixed housing seat and the second fixed housing seat, the two stabilizing rods are respectively located on both sides of the screw rod, the movable seat is provided with through holes adapted to the two stabilizing rods, and the two stabilizing rods pass through the movable seat through the through holes; The stabilizing rod located on the same side as the long stroke hole is set as the first stabilizing rod, and the end of the first stabilizing rod extends into the interior of the first fixed shell seat. A connecting seat is provided at the bottom of the movable column, and the connecting seat is connected to the first motor and driven by it. The connecting seat has a through hole adapted to the first stabilizing rod, and the connecting seat forms a sliding connection with the first stabilizing rod.

5. The sample storage and sampling device suitable for sniffing test according to claim 1, characterized in that: The bottle holder comprises two arc-shaped clamps arranged opposite to each other, and a vertically arranged abutment wall is provided on one side of the bottle holder close to the center of the rotating frame, and the gas sample storage bottle is horizontally clamped in the bottle holder; The mouth of the gas sample storage bottle placed on the rotating frame faces the outer circumference, the bottle body is surrounded and clamped by the two arc-shaped clamps, and the bottom of the bottle abuts against the abutment wall.

6. The sample storage and sampling device suitable for sniffing test according to claim 1 or 5, characterized in that: The rotating frame includes a supporting shaft arranged in a vertical direction and at least one mounting disc, wherein the supporting shaft passes through the center of the mounting disc, the supporting shaft and the mounting disc are relatively stationary, and the supporting shaft is directly or indirectly driven to rotate by the rotating motor; A plurality of bottle holders are installed on the top surface of the installation disc, and after the gas sample storage bottle is clamped in the bottle holder, the bottle mouth protrudes outward from the edge of the installation disc; Several of the bottle holders are marked with different numbers.

7. The sample storage and sampling device suitable for sniffing test according to claim 6, characterized in that: The mounting discs are provided with at least two, namely, an upper mounting disc and a lower mounting disc, and the two mounting discs are fixed to the supporting shaft and distributed up and down; At least one lifting push rod is connected and fixed to the bottom of the lower mounting disc, and a moving rod of the lifting push rod is fixedly connected to the bottom of the lower mounting disc. The lifting push rod drives the upper mounting disc and the lower mounting disc to rise and fall. The fixing seat of the lifting push rod is fixedly installed on a mounting platform, and the rotating motor is connected and fixed to the bottom of the mounting platform.

8. The sample storage and sampling device suitable for sniffing test according to claim 7, characterized in that: The bottom of the lower mounting disc is provided with a concentric circumferential slide rail, three lifting push rods are provided and are evenly distributed on the mounting platform, and the end of the moving rod of the lifting push rod is slidably engaged with the circumferential slide rail.

9. The sample storage and sampling device suitable for sniffing test according to any one of claims 1 to 3, characterized in that: A hollow chromatographic column is provided between the output end of the gas chromatograph and the connecting pipe for connection and communication.

10. The sample storage and sampling device suitable for sniffing test according to claim 9, characterized in that: A connecting screw is provided near the tail end of the hollow chromatographic column, a through long hole is provided in the middle of the connecting screw along the length direction, an expansion sealing ring is installed at the end of the threaded section of the connecting screw, and the hollow chromatographic column is inserted from the head of the connecting screw to the tail through the through long hole; The inner wall of the connecting pipe is provided with an internal thread adapted to the connecting screw. The inner wall of the heated expansion sealing ring contacts the outer wall of the hollow chromatographic column, and the outer wall contacts the inner wall of the connecting pipe. The end of the hollow chromatographic column does not protrude from the inner surface of the barrel cavity and exceeds the expansion sealing ring by 2 to 4 mm.

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