Gas chromatograph for white spirit detection and sample introduction method thereof

Abstract

The invention relates to the technical field of gas chromatographs, in particular to a gas chromatograph for white spirit detection and a sample introduction method thereof.The upper portion of a gas chromatograph cabinet is provided with a vaporizing chamber device, a chromatographic column is arranged in the gas chromatograph cabinet, and a filter assembly is arranged at the butt joint of the vaporizing chamber device and the chromatographic column; the filtering assembly comprises a filtering ring plate piece, a carrier gas conveying device, a transverse pushing long plate, a limiting outer frame and a separating device, a microporous filtering disc is arranged between a vaporizing chamber and a chromatographic column to filter mixed gas, impurities in the mixed gas are prevented from polluting the chromatographic column, and after excessive impurities are intercepted by the surface of the microporous filtering disc, the chromatographic column is separated from the chromatographic column. In order to guarantee smooth operation of mixed gas filtering work, the microporous filter disc attached with impurities can be automatically replaced by a new microporous filter disc.

Description

Technical Field

[0001] The present invention relates to the technical field of gas chromatographs, in particular to a gas chromatograph for liquor detection and a sampling method thereof. Background Art

[0002] When the gas chromatograph is used to detect liquor, the liquor enters the vaporization chamber and is vaporized. The carrier gas and liquor gas are then mixed. The mixed gas is injected into the chromatographic column for separation, and the components are detected after leaving the chromatographic column.

[0003] The primary function of a gas chromatograph's chromatographic column is to separate the components in a gas mixture. This separation is achieved by allowing different components to be adsorbed and desorbed between the column's stationary phase and the carrier gas, allowing the components in the mixture to elute sequentially according to their retention times. Impurities may enter the column; even the cleanest samples may contain small or trace amounts of non-volatile or semi-volatile substances. Repeated injections of these substances can deposit on the inner surface of the column inlet, leading to column contamination.

[0004] The airflow entering the chromatographic column is filtered and the impurity-free airflow is injected into the chromatographic column to avoid contamination of the chromatographic column. The filter element is installed at the air inlet of the chromatographic column. The filter element has dense tiny pores. After filtering impurities, the filter element's own air permeability decreases and needs to be replaced in time to avoid affecting the delivery of the mixed airflow. How to quickly and effectively replace the filter element is a technical direction of innovative research and development. To this end, the present invention provides a gas chromatograph for liquor detection and a sampling method thereof. Summary of the Invention

[0005] The object of the present invention is to provide a gas chromatograph for liquor detection and a sampling method thereof, so as to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a gas chromatograph for liquor detection, comprising a gas chromatograph cabinet, a vaporization chamber device installed on the upper part of the gas chromatograph cabinet, a chromatographic column provided in the gas chromatograph cabinet, and a filter assembly provided at the interface between the vaporization chamber device and the chromatographic column, wherein the filter assembly includes:

[0007] A filter ring plate, one end of the chromatographic column extends into a cylindrical mixed gas diversion box provided on the vaporization chamber device, and the filter ring plate partially extends into the mixed gas diversion box by passing through an arc plate hole provided on the mixed gas diversion box housing of the vaporization chamber device. The mixed gas diversion box is mounted on the chromatographic column through a fixed pile, and the filter ring plate filters the mixed gas entering the chromatographic column by covering the pile.

[0008] A carrier gas delivery device is installed on one side of the vaporization chamber, and the carrier gas delivery device is connected to a carrier gas pipeline provided on the vaporization chamber device;

[0009] The horizontal push long plate slides through the slide plate hole provided on the mixed gas diverter box housing, the end of the horizontal push long plate in the mixed gas diverter box contacts the filter ring plate, and the end of the horizontal push long plate outside the mixed gas diverter box establishes transmission with the carrier gas conveying device;

[0010] A limiting outer frame is provided on one side of the vaporization chamber device, and an edge of one side of the filter ring plate is inserted into an arc-shaped track groove provided on the limiting outer frame;

[0011] A disengaging device, one end of which is mounted on the limiting outer frame.

[0012] The filter ring plate comprises:

[0013] A rotating core ring plate, on which a plurality of loading through holes are evenly arranged;

[0014] A dual control mechanism is provided on one side of each loading through hole;

[0015] A microporous filter disc is placed in the through hole on one side of the rotating core ring plate. The microporous filter disc is densely distributed with micropores for the mixed gas to pass through. The dual-control mechanism supports the microporous filter disc.

[0016] The carrier gas delivery device includes:

[0017] A space frame with one end fixed on the limit outer frame, a travel member supported on the space frame, and a lap joint device for transmitting the travel member, and a horizontal push long plate and the lap joint device are connected;

[0018] The gas control component is transmission-connected to the lap joint device, and one end of the gas control component is connected to the carrier gas pipeline on the vaporization chamber device.

[0019] The gas control component includes an L-shaped tube with one end fixedly connected to the carrier gas pipeline of the vaporization chamber device, a flat tube fixedly connected to the other end of the L-shaped tube, a wind-driven wheel arranged at the junction of the L-shaped tube and the flat tube, and a wheel axle fixed in the middle of the wind-driven wheel, and a partial section of the wheel axle is movably sleeved in a through hole opened on a shell on one side of the flat tube.

[0020] The lap joint device includes a worm, a neck shaft, a lap frame and a lap shaft. A local section of the space frame slides through a square hole opened on the lap frame, and the lap shaft is movably sleeved in a through hole opened on the lap frame. The worm and the neck shaft are respectively movably sleeved in two through holes opened on the space frame. One end of the neck shaft is driven by a fixed bevel gear to change direction with the bevel gear fixed at one end of the wheel axle, and the other end of the neck shaft is meshed with a column gear fixed at one end of the lap shaft through a fixed gear. The lap shaft column gear is meshed with the gear fixed at one end of the worm through axial movement, and the horizontal push long plate is fixedly connected to the lap frame. The lap joint device also includes a return spring piece, one end of which is fixed on the lap frame, and the other end is fixed on the space frame.

[0021] The stroke member includes a pressure shaft movably sleeved in a column hole opened on the space frame, a disc gear fixed at one end of the pressure shaft, a limiting plate fixed at the other end of the pressure shaft, a mainspring fixed on the pressure shaft, and an outer gear ring fixed on the outside of the mainspring, and the worm and the outer gear ring are meshed and connected.

[0022] The stroke member also includes a star frame fixed on the bottom surface of one side of the outer gear ring, and a stopping spring with one end blocking the limiting plate. The other end of the stopping spring is fixed on the space frame, and the pressure shaft is movably sleeved in the through hole opened in the middle of the star frame.

[0023] The dual-control mechanism is arranged in a square cavity opened in the rotating core ring plate, and the dual-control mechanism includes a T-seat fixed on the rotating core ring plate, a centralized control seat supported on the T-seat, a pull-back spring fixedly connected between the T-seat and the centralized control seat, a disk rack supported by one end of the centralized control seat, an outer delivery plate with a spring reset mechanism in contact with the other end of the centralized control seat, an inner delivery plate distributed parallel to one side of the outer delivery plate, and a linkage component that establishes a transmission between the disk rack and the inner delivery plate. The linkage component that moves with the centralized control seat will not transmit the inner delivery plate, and the inner delivery plate pressed into the rotating core ring plate will drive the disk rack to leave the carrier through the linkage component. The outer delivery plate slides through a straight plate hole opened on the rotating core ring plate to be selectively contacted by the end of the long plate pushed horizontally, and the inner delivery plate slides through another straight plate hole opened on the rotating core ring plate to be selectively pressed by the disengagement device. The partial section of the control seat slides through the plate hole opened on the disc rack, and the arc plate set on the disc rack protrudes into the material through hole of the rotating core ring plate through the arc plate hole opened on the rotating core ring plate. Space is reserved in the arc plate hole of the rotating core ring plate for the disc rack arc plate to move along its own thickness direction. The disc rack arc plate supports the microporous filter disc, and one end of the T seat slides into the square groove opened on the control seat.

[0024] The disengagement device is used to control the falling off of the microporous filter disc leaving the vaporization chamber device. A plurality of microporous filter discs to be used are stacked above the rotating core ring plate that is about to enter the vaporization chamber device, and the stacked microporous filter discs fall down and are supplemented into the through-holes of the rotating core ring plate passing through. The disengagement device includes a sub-frame with one end fixed on the limiting outer frame, a short control plate sliding through the plate hole opened in the sub-frame, and a return spring fixed on the sub-frame. One end of the short control plate selects to press an inner delivery plate, and the other end of the short control plate contacts one end of the return spring.

[0025] A gas chromatograph sampling method for liquor detection comprises the following steps:

[0026] Step 1: Use a syringe to inject the liquor to be tested into the vaporization chamber of the vaporization chamber device, and continuously inject carrier gas into the vaporization chamber;

[0027] Step 2: The liquor liquid is vaporized, and the carrier gas and liquor gas are mixed and then transported to the mixed gas diversion box of the vaporization chamber device;

[0028] Step 3: Part of the mixed gas injected into the mixed gas diversion box is discharged through the diversion pipe, and the other part passes through the microporous filter disk and is injected into the chromatographic column. Impurities in the mixed gas are intercepted by the microporous filter disk;

[0029] Step 4: If there are too many impurities attached to the microporous filter disc at the gas inlet port of the chromatographic column, the microporous filter disc replacement mechanism will be automatically triggered. The filter ring plate will rotate at a fixed angle, and the new microporous filter disc will move to replace the microporous filter disc with impurities to continue filtering the mixed gas.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. A microporous filter disk is set between the vaporization chamber and the chromatographic column to filter the mixed gas and prevent impurities in the mixed gas from contaminating the chromatographic column. After too many impurities are intercepted on the surface of the microporous filter disk, in order to ensure the smooth filtration of the mixed gas, the microporous filter disk with impurities attached in the present invention will be automatically replaced by a new microporous filter disk.

[0032] 2. After the microporous filter disc with impurities attached leaves the vaporization chamber device, it will fall off from the rotating core ring plate under the control of the separation device. In addition, the carrier holes on the rotating core ring plate will automatically complete the filling of a new microporous filter disc before re-entering the vaporization chamber device. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the present invention.

[0034] Figure 2 Schematic diagram of the vaporization chamber device location.

[0035] Figure 3 Schematic diagram of the vaporization chamber structure.

[0036] Figure 4 Schematic diagram of the internal structure of the vaporization chamber.

[0037] Figure 5 Schematic diagram of the filtering integrated structure.

[0038] Figure 6 Schematic diagram of the filter ring plate structure.

[0039] Figure 7 Schematic diagram of the location of the carrier gas delivery device.

[0040] Figure 8 Schematic diagram of the structure of the carrier gas delivery device.

[0041] Figure 9 Schematic diagram of the air control component structure.

[0042] Figure 10 Schematic diagram of the splicing device structure.

[0043] Figure 11 It is a schematic diagram of the travel component structure.

[0044] Figure 12 Schematic diagram of the outer ring gear structure.

[0045] Figure 13 Schematic diagram of the position of the dual control mechanism.

[0046] Figure 14 It is a schematic diagram of the dual control mechanism structure.

[0047] Figure 15 Schematic diagram of the separation device structure.

[0048] Figure 16 A schematic diagram of the linkage component structure.

[0049] In the figure: gas chromatograph cabinet 1, vaporization chamber device 2, chromatographic column 3, filter integration 4, filter ring plate 5, horizontal push long plate 6, carrier gas delivery device 7, limit outer frame 8, separation device 9, rotating core ring plate 10, microporous filter disc 11, dual control mechanism 12, gas control component 13, space frame 14, stroke member 15, overlap device 16, L-shaped tube 17, wind drive wheel 18, wheel shaft 19, flat tube 20, worm 21, neck shaft 22, overlap Connecting frame 23, overlapping shaft 24, return spring 231, outer ring gear 25, star frame 26, mainspring 27, disc gear 28, pressure shaft 29, limiting plate 30, stop spring 31, outer delivery plate 32, inner delivery plate 33, linkage assembly 34, T seat 35, pull-back spring 36, centralized control seat 37, disc frame 38, short control plate 39, sub-frame 40, return spring 41, two-way movable plate 42, spring 43, central shaft 44, and amplifying gear 45. DETAILED DESCRIPTION

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the technical solutions in the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0051] See also Figures 1 to 16 The present invention provides a technical solution: a gas chromatograph for liquor detection, comprising a gas chromatograph cabinet 1, a vaporization chamber device 2 installed on the upper part of the gas chromatograph cabinet 1, a chromatographic column 3 provided in the gas chromatograph cabinet 1, and a filter integration 4 provided at the joint between the vaporization chamber device 2 and the chromatographic column 3, the filter integration 4 comprising:

[0052] The filter ring plate 5, one end of the chromatographic column 3 extends into the cylindrical box-shaped mixed gas diversion box provided on the vaporization chamber device 2, and the filter ring plate 5 partially extends into the mixed gas diversion box through the arc plate hole opened on the shell of the mixed gas diversion box of the vaporization chamber device 2. The mixed gas diversion box is sleeved on the chromatographic column 3 by a fixed pile tube, and the filter ring plate 5 filters the mixed gas entering the chromatographic column 3 by covering the pile tube. The mixed gas here is the mixed gas after the carrier gas and the vaporized white wine. A part of the mixed gas is discharged through the diversion pipe provided on the vaporization chamber device 2, and there is Part of the mixed gas is injected into the chromatographic column 3. The gas chromatograph cabinet 1, the vaporization chamber device 2 and the chromatographic column 3 are devices of the prior art. The specific structure of the vaporization chamber device 2 includes a sample injection port at the top, a septum for the needle to pass through below, and a vaporization pipeline below. A carrier gas preheating pipeline is arranged around the outside of the vaporization pipeline. The carrier gas is split at the top of the preheating pipeline. Part of the airflow rises and passes through the septum purge gas discharge pipeline to be discharged outside. Part of the airflow enters the preheating pipeline and mixes with the gas vaporized from the liquor. The mixed gas flows down to the mixed gas diversion box. A heating wire device for heating is wrapped around the outside of the vaporization chamber.

[0053] A carrier gas delivery device 7 is installed on one side of the vaporization chamber, and the carrier gas delivery device 7 is connected to the carrier gas pipeline provided on the vaporization chamber device 2;

[0054] The horizontal push long plate 6 slides through the slide plate hole provided on the mixed gas diverter box housing. The end of the horizontal push long plate 6 in the mixed gas diverter box contacts the filter ring plate 5, and the end of the horizontal push long plate 6 outside the mixed gas diverter box establishes transmission with the carrier gas conveying device 7.

[0055] The limiting outer frame 8 is provided on one side of the vaporization chamber device 2, and the edge of one side of the filter ring plate 5 is inserted into the arc-shaped track groove provided on the limiting outer frame 8;

[0056] The disengaging device 9 has one end mounted on the limiting outer frame 8 .

[0057] refer to Figure 6 It is understood that the filter ring plate 5 includes:

[0058] The rotating core ring plate 10 has a plurality of loading holes evenly arranged on the rotating core ring plate 10;

[0059] A dual control mechanism 12 is provided on one side of each loading hole;

[0060] A microporous filter disc 11 is placed in the through hole on one side of the rotating core ring plate 10 . The microporous filter disc 11 is densely distributed with micropores for the mixed gas to pass through. The dual-control mechanism 12 lifts and supports the microporous filter disc 11 .

[0061] refer to Figure 8 It is understood that the carrier gas delivery device 7 includes:

[0062] A space frame 14 with one end fixed on the limit outer frame 8, a travel member 15 supported on the space frame 14, and a lap joint device 16 for driving the travel member 15, the horizontal push long plate 6 and the lap joint device 16 are connected;

[0063] The gas control component 13 is transmission-connected to the bridge device 16 , and one end of the gas control component 13 is connected to the carrier gas pipeline on the vaporization chamber device 2 .

[0064] refer to Figure 9 It is understood that the gas control assembly 13 includes an L-shaped tube 17 with one end fixedly connected to the carrier gas pipeline of the vaporization chamber device 2, a flat tube 20 fixedly connected to the other end of the L-shaped tube 17, a wind-driven wheel 18 provided at the junction of the L-shaped tube 17 and the flat tube 20, and a wheel shaft 19 fixed in the middle of the wind-driven wheel 18, and a partial section of the wheel shaft 19 is movably connected to a through hole opened in the shell on one side of the flat tube 20.

[0065] refer to Figure 10 It is understood that the lap joint device 16 includes a worm 21, a neck shaft 22, a lap frame 23 and a lap shaft 24. A partial section of the space frame 14 slides through the square hole opened on the lap frame 23, and the lap shaft 24 is movably sleeved in the through hole opened on the lap frame 23. The worm 21 and the neck shaft 22 are respectively movably sleeved in the two through holes opened on the space frame 14. One end of the neck shaft 22 is connected to the bevel gear fixed at one end of the wheel axle 19 through a fixed bevel gear for direction transmission, and the other end of the neck shaft 22 is connected to the column gear fixed at one end of the lap shaft 24 through a fixed gear. The column gear of the lap shaft 24 is connected to the gear fixed at one end of the worm 21 through axial movement, and the horizontal push long plate 6 is fixedly connected to the lap frame 23. The lap joint device 16 also includes a return spring 231, one end of which is fixed on the lap frame 23, and the other end is fixed on the space frame 14.

[0066] refer to Figure 11 It is understood that the stroke member 15 includes a pressure shaft 29 movably sleeved in a column hole opened on the space frame 14, a disc gear 28 fixed at one end of the pressure shaft 29, a limiting plate 30 fixed at the other end of the pressure shaft 29, a mainspring 27 fixed on the pressure shaft 29, and an outer gear ring 25 fixed on the outside of the mainspring 27, and the worm 21 and the outer gear ring 25 are meshed and connected.

[0067] The stroke member 15 also includes a star frame 26 fixed to the bottom surface of one side of the outer ring gear 25, and a stop spring 31 with one end locking the interception limit plate 30. The other end of the stop spring 31 is fixed to the space frame 14, and the pressure shaft 29 is movably connected to the through hole opened in the middle of the star frame 26.

[0068] The dual-control mechanism 12 is arranged in the square cavity opened in the rotating core ring plate 10. The dual-control mechanism 12 includes a T-seat 35 fixed on the rotating core ring plate 10, a centralized control seat 37 supported on the T-seat 35, a pull-back spring 36 fixedly connected between the T-seat 35 and the centralized control seat 37, a disk rack 38 supported by one end of the centralized control seat 37, an outer delivery plate 32 with a spring return mechanism in contact with the other end of the centralized control seat 37, an inner delivery plate 33 distributed parallel to one side of the outer delivery plate 32, and a linkage assembly 34 for establishing a transmission between the disk rack 38 and the inner delivery plate 33. The linkage assembly 34 that moves with the centralized control seat 37 will not transmit the inner delivery plate 33. The inner delivery plate 33 pressed into the rotating core ring plate 10 will be driven by the linkage assembly 34. The movable disc rack 38 leaves the loading through hole, and the outer delivery plate 32 is selectively contacted by the end of the long plate 6 by sliding through a straight plate hole opened on the rotating core ring plate 10, and the inner delivery plate 33 slides through another straight plate hole opened on the rotating core ring plate 10 to be selectively pressed by the disengagement device 9. The partial section of the control seat 37 slides through the plate hole opened on the disc rack 38, and the arc plate provided on the disc rack 38 protrudes into the loading through hole of the rotating core ring plate 10 through the arc plate hole opened on the rotating core ring plate 10. Space is reserved in the arc plate hole of the rotating core ring plate 10 for the arc plate of the disc rack 38 to move along its own thickness direction. The arc plate of the disc rack 38 supports the microporous filter disc 11, and one end of the T seat 35 slides and is inserted into the square groove opened on the control seat 37. Figure 16 Understand the structure of the linkage assembly 34. The linkage assembly 34 of the prior art device includes a two-way movable plate 42, a spring 43, a central shaft 44 and an amplifying gear 45. The lifting and lowering of the control seat 37 will drive the two-way movable plate 42. The two-way movable plate 42 and the inner delivery plate 33 are clamped together. The lifting and lowering of the two-way movable plate 42 will not drive the inner delivery plate 33. The inner delivery plate 33 moves to the right after being compressed. The inner delivery plate 33 will push the two-way movable plate 42. The two-way movable plate 42 moves to the right and drives the amplifying gear 45 to rotate. The amplifying gear 45 and the disc rack 38 are engaged in transmission connection. The disc rack 38 moves to the left until the disc rack 38 completely leaves the object-carrying through hole. The microporous filter plate 11 can fall away from the rotating core ring plate 10 after losing support below.

[0069] The disengagement device 9 is used to control the falling off of the microporous filter disc 11 leaving the vaporization chamber device 2. A plurality of microporous filter discs 11 to be used are stacked above the rotating core ring plate 10 that is about to enter the vaporization chamber device 2, and the stacked microporous filter discs 11 fall down and are supplemented into the object-carrying through-hole of the rotating core ring plate 10 passing through. The disengagement device 9 includes a sub-frame 40 with one end fixed on the limiting outer frame 8, a short control plate 39 sliding through the plate hole opened on the sub-frame 40, and a return spring 41 fixed on the sub-frame 40. One end of the short control plate 39 selects to press an inner delivery plate 33, and the other end of the short control plate 39 contacts one end of the return spring 41.

[0070] A gas chromatograph sampling method for liquor detection comprises the following steps:

[0071] Step 1: Use a syringe to inject the liquor to be tested into the vaporization chamber of the vaporization chamber device 2, and continuously inject carrier gas into the vaporization chamber;

[0072] Step 2: The liquor liquid is vaporized, and the carrier gas and liquor gas are mixed and then transported to the mixed gas diversion box of the vaporization chamber device 2;

[0073] Step 3: Part of the mixed gas injected into the mixed gas diversion box is discharged through the diversion pipe, and the other part passes through the microporous filter disk 11 and is injected into the chromatographic column 3. Impurities in the mixed gas are intercepted by the microporous filter disk 11;

[0074] Step 4: If there are too many impurities attached to the microporous filter disc 11 at the gas inlet port of the chromatographic column 3, the replacement mechanism of the microporous filter disc 11 will be automatically triggered. The filter ring plate 5 rotates a fixed angle, and the new microporous filter disc 11 moves to replace the microporous filter disc 11 with impurities to continue filtering the mixed gas.

[0075] The mixed air flow of carrier gas and liquor gas flows downward in the vaporization chamber, and the mixed air flow is filtered by the microporous filter disk 11 at the injection port of the chromatographic column 3. Impurities adhere to the upper surface of the microporous filter disk 11. The mixed air flow passing through the microporous filter disk 11 is injected into the chromatographic column 3. After too many impurities adhere to the microporous filter disk 11, the air permeability of the microporous filter disk 11 decreases. The impact of the mixed air flow on the microporous filter disk 11 will cause the microporous filter disk 11 to drop. Figure 13 and Figure 14 Understand, the microporous filter plate 11 will press the plate rack 38 when it descends, and the plate rack 38 drives the centralized control seat 37, and the centralized control seat 37 descends to push the external delivery plate 32 to pop out, and the external delivery plate 32 pushes the horizontal push long plate 6, so that Figure 10The horizontal push long plate 6 in the middle is translated to the left, and the horizontal push long plate 6 drives the lap frame 23, and then the lap shaft 24 moves axially to the left, and the gear on the lap shaft 24 and the gear on the worm 21 are engaged, so that a temporary transmission path is established, and the flat tube 20 is externally connected to the carrier gas supply mechanism in the prior art. During the process of supplying carrier gas to the vaporization chamber device 2, the carrier gas flows through the junction of the L-shaped tube 17 and the flat tube 20, causing the wind drive wheel 18 to rotate continuously, and then the wheel shaft 19 rotates to drive the neck shaft 22, the worm 21 and the neck shaft 22 rotate synchronously, and the worm 21 rotates to drive the external The gear ring 25 and the outer gear ring 25 rotate to cause the mainspring 27 to contract and store force, and then the pressure shaft 29 has a tendency to rotate. After the mainspring 27 stores enough force, the limiting plate 30 breaks through the elastic position of the intercepting shrapnel 31, and the pressure shaft 29 is able to rotate quickly for one circle. The pressure shaft 29 drives the disc gear 28, and the disc gear 28 drives the rotating core ring plate 10 to rotate a fixed angle, so that the next new microporous filter disk 11 is quickly moved to the air inlet of the chromatographic column 3. In this way, the mixed gas filtration work continues, and the microporous filter disk 11 originally attached with impurities will gradually leave the vaporization chamber device 2.

[0076] The microporous filter disc 11 leaving the vaporization chamber device 2 will fall off, because the inner delivery plate 33 corresponding to the microporous filter disc 11 with impurities attached will encounter the short control plate 39 during the circular movement. The short control plate 39 presses the inner delivery plate 33, causing the inner delivery plate 33 to retract into the middle part of the rotating core ring plate 10. As mentioned before, the inner delivery plate 33 translates and the corresponding disc rack 38 retracts into the rotating core ring plate 10, and the microporous filter disc 11 that loses its support falls off from the rotating core ring plate 10. In addition, an impact mechanism in the prior art can be installed above the falling position to ensure that the microporous filter disc 11 is hit and falls off smoothly. For reference, Figure 8 Opposite to the separation device 9 are multiple stacked microporous filter discs 11. The outer ring of the stacked microporous filter discs 11 is surrounded by a cylindrical shell for spatial positioning, and an elastic pushing mechanism in the prior art is installed above the stacked microporous filter discs 11. In this way, the loading through hole of the rotating core ring plate 10 moves to the bottom of the stacked microporous filter discs 11, and the bottom microporous filter disc 11 will be directly pushed into the rotating core ring plate 10 to achieve automatic filling.

[0077] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A gas chromatograph for liquor detection, comprising a gas chromatograph cabinet, characterized in that: A vaporization chamber device is installed on the upper part of the gas chromatograph cabinet, a chromatographic column is provided in the gas chromatograph cabinet, and a filter integration is provided at the joint between the vaporization chamber device and the chromatographic column, and the filter integration includes: A filter ring plate, one end of the chromatographic column extends into a cylindrical mixed gas diversion box provided on the vaporization chamber device, and the filter ring plate partially extends into the mixed gas diversion box by passing through an arc plate hole provided on the mixed gas diversion box housing of the vaporization chamber device. The mixed gas diversion box is mounted on the chromatographic column through a fixed pile, and the filter ring plate filters the mixed gas entering the chromatographic column by covering the pile. A carrier gas delivery device is installed on one side of the vaporization chamber, and the carrier gas delivery device is connected to a carrier gas pipeline provided on the vaporization chamber device; The horizontal push long plate slides through the slide plate hole provided on the mixed gas diverter box housing, the end of the horizontal push long plate in the mixed gas diverter box contacts the filter ring plate, and the end of the horizontal push long plate outside the mixed gas diverter box establishes transmission with the carrier gas conveying device; A limiting outer frame is provided on one side of the vaporization chamber device, and an edge of one side of the filter ring plate is inserted into an arc-shaped track groove provided on the limiting outer frame; A disengaging device, one end of which is mounted on the limiting outer frame.

2. A gas chromatograph for liquor detection according to claim 1, characterized in that: The filter ring plate comprises: A rotating core ring plate, on which a plurality of loading through holes are evenly arranged; A dual control mechanism is provided on one side of each loading through hole; A microporous filter disc is placed in the through hole on one side of the rotating core ring plate. The microporous filter disc is densely distributed with micropores for the mixed gas to pass through. The dual-control mechanism supports the microporous filter disc.

3. A gas chromatograph for liquor detection according to claim 1, characterized in that: The carrier gas delivery device includes: A space frame with one end fixed on the limit outer frame, a travel member supported on the space frame, and a lap joint device for transmitting the travel member, and a horizontal push long plate and the lap joint device are connected; The gas control component is transmission-connected to the lap joint device, and one end of the gas control component is connected to the carrier gas pipeline on the vaporization chamber device.

4. A gas chromatograph for liquor detection according to claim 3, characterized in that: The gas control component includes an L-shaped tube with one end fixedly connected to the carrier gas pipeline of the vaporization chamber device, a flat tube fixedly connected to the other end of the L-shaped tube, a wind-driven wheel arranged at the junction of the L-shaped tube and the flat tube, and a wheel axle fixed in the middle of the wind-driven wheel, and a partial section of the wheel axle is movably sleeved in a through hole opened on a shell on one side of the flat tube.

5. A gas chromatograph for liquor detection according to claim 4, characterized in that: The lap joint device includes a worm, a neck shaft, a lap frame and a lap shaft. A local section of the space frame slides through a square hole opened on the lap frame, and the lap shaft is movably sleeved in a through hole opened on the lap frame. The worm and the neck shaft are respectively movably sleeved in two through holes opened on the space frame. One end of the neck shaft is driven by a fixed bevel gear to change direction with the bevel gear fixed at one end of the wheel axle, and the other end of the neck shaft is meshed with a column gear fixed at one end of the lap shaft through a fixed gear. The lap shaft column gear is meshed with the gear fixed at one end of the worm through axial movement, and the horizontal push long plate is fixedly connected to the lap frame. The lap joint device also includes a return spring piece, one end of which is fixed on the lap frame, and the other end is fixed on the space frame.

6. A gas chromatograph for liquor detection according to claim 5, characterized in that: The stroke member includes a pressure shaft movably sleeved in a column hole opened on the space frame, a disc gear fixed at one end of the pressure shaft, a limiting plate fixed at the other end of the pressure shaft, a mainspring fixed on the pressure shaft, and an outer gear ring fixed on the outside of the mainspring, and the worm and the outer gear ring are meshed and connected.

7. A gas chromatograph for liquor detection according to claim 6, characterized in that: The stroke member also includes a star frame fixed on the bottom surface of one side of the outer gear ring, and a stopping spring with one end blocking the limiting plate. The other end of the stopping spring is fixed on the space frame, and the pressure shaft is movably sleeved in the through hole opened in the middle of the star frame.

8. A gas chromatograph for liquor detection according to claim 2, characterized in that: The dual-control mechanism is arranged in a square cavity opened in the rotating core ring plate, and the dual-control mechanism includes a T-seat fixed on the rotating core ring plate, a centralized control seat supported on the T-seat, a pull-back spring fixedly connected between the T-seat and the centralized control seat, a disk rack supported by one end of the centralized control seat, an outer delivery plate with a spring reset mechanism in contact with the other end of the centralized control seat, an inner delivery plate distributed parallel to one side of the outer delivery plate, and a linkage component that establishes a transmission between the disk rack and the inner delivery plate. The linkage component that moves with the centralized control seat will not transmit the inner delivery plate, and the inner delivery plate pressed into the rotating core ring plate will drive the disk rack to leave the carrier through the linkage component. The outer delivery plate slides through a straight plate hole opened on the rotating core ring plate to be selectively contacted by the end of the long plate pushed horizontally, and the inner delivery plate slides through another straight plate hole opened on the rotating core ring plate to be selectively pressed by the disengagement device. The partial section of the control seat slides through the plate hole opened on the disc rack, and the arc plate set on the disc rack protrudes into the material through hole of the rotating core ring plate through the arc plate hole opened on the rotating core ring plate. Space is reserved in the arc plate hole of the rotating core ring plate for the disc rack arc plate to move along its own thickness direction. The disc rack arc plate supports the microporous filter disc, and one end of the T seat slides into the square groove opened on the control seat.

9. A gas chromatograph for liquor detection according to claim 8, characterized in that: The disengagement device is used to control the falling off of the microporous filter disc leaving the vaporization chamber device. A plurality of microporous filter discs to be used are stacked above the rotating core ring plate that is about to enter the vaporization chamber device, and the stacked microporous filter discs fall down and are supplemented into the through-holes of the rotating core ring plate passing through. The disengagement device includes a sub-frame with one end fixed on the limiting outer frame, a short control plate sliding through the plate hole opened in the sub-frame, and a return spring fixed on the sub-frame. One end of the short control plate selects to press an inner delivery plate, and the other end of the short control plate contacts one end of the return spring.

10. A gas chromatograph sampling method for liquor detection, used in the gas chromatograph for liquor detection according to claim 1, characterized in that: The following steps are involved: Step 1: Use a syringe to inject the liquor to be tested into the vaporization chamber of the vaporization chamber device, and continuously inject carrier gas into the vaporization chamber; Step 2: The liquor liquid is vaporized, and the carrier gas and liquor gas are mixed and then transported to the mixed gas diversion box of the vaporization chamber device; Step 3: Part of the mixed gas injected into the mixed gas diversion box is discharged through the diversion pipe, and the other part passes through the microporous filter disk and is injected into the chromatographic column. Impurities in the mixed gas are intercepted by the microporous filter disk; Step 4: If there are too many impurities attached to the microporous filter disc at the gas inlet port of the chromatographic column, the microporous filter disc replacement mechanism will be automatically triggered. The filter ring plate will rotate at a fixed angle, and the new microporous filter disc will move to replace the microporous filter disc with impurities to continue filtering the mixed gas.

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