CN216847639U

CN216847639U - Full autoinjection secondary thermal analysis appearance

Info

Publication number: CN216847639U
Application number: CN202121352480.XU
Authority: CN
Inventors: 张云飞; 王泽龙
Original assignee: Hebei Co ltd
Current assignee: Hebei Co ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2022-06-28
Anticipated expiration: 2031-06-17

Abstract

The utility model relates to a full autoinjection secondary thermal analysis appearance, comprises a workbench, the adsorption tube of setting on the workstation puts the frame and is used for pressing from both sides the clamping device who unloads the sample adsorption tube, the setting is used for the analytic mechanism that detects the gaseous sample in the adsorption tube and installs the control panel who is used for controlling each work link of whole analytic in-process on the workstation inside the workstation, analytic mechanism is including heating analytic piece, the heating analytic piece includes the riser and connects the isothermal body such as heating on the riser, the riser is used for driving isothermal body such as heating move to the position of laminating each other with the sample adsorption tube. The utility model discloses full autoinjection secondary thermal analysis appearance is analytic to sample adsorption tube high temperature heating through heating isothermal body, guarantees that the temperature in sample adsorption tube and the sampling valve is unanimous to reduce the sample volume of remaining in the analytic process pipeline of simple analysis or the sampling valve, improve sample analytic sensitivity and survey precision.

Description

Full autoinjection secondary thermal analysis appearance

Technical Field

The utility model relates to a gaseous sample pretreatment sampling device, concretely relates to full autoinjection secondary thermal analyzer.

Background

The thermal analysis instrument has three functions of standard sample analog sampling, thermal analysis and analysis tube activation, and can be used in combination with domestic and imported gas chromatographs. The method is suitable for the fields of environmental monitoring and the like.

The thermal analyzer has multiple types and basically similar parameters, and a sample requires the whole course of the sample to flow in a passivation pipeline at a certain temperature when being injected by the thermal analyzer.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a full autoinjection secondary thermal analyzer to the sample adsorption tube high temperature heating is analytic, reduces the sample volume of remaining in pipeline or the admission valve, improves the analytic sensitivity and the survey precision of sample.

In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides a full autoinjection secondary thermal analysis appearance, includes the workstation, sets up the adsorption tube that is used for putting the sample adsorption tube on the workstation puts the frame, sets up the clamping device who is used for pressing from both sides the sample adsorption tube on the workstation, sets up the analytic mechanism that is used for detecting the gaseous sample in the adsorption tube inside the workstation and install the control panel who is used for controlling each work link of whole analytic in-process on the workstation, analytic mechanism is including the analytic piece of heating, and the analytic piece of heating includes the riser and connects the heating isothermal body on the riser, and the riser is used for driving the isothermal body motion of heating to the position of laminating each other with the sample adsorption tube to through the isothermal body of heating to the sample adsorption tube heating is analytic, so that the temperature in sample adsorption tube and the appearance valve is unanimous.

As a further improvement, a heating rod and a temperature sensor are arranged inside the heating isothermal body, so that the temperature of the heating isothermal body is constant.

As a further improvement, the heating isothermal body is provided with a placing groove for placing the sample adsorption tube.

As a further improvement, the resolving mechanism comprises a cap clamping assembly, the cap clamping assembly comprises a fixed frame, a guide rail arranged on the fixed frame and a group of cap clamping cylinders arranged on the guide rail and capable of moving relatively along the guide rail, a group of clamping pieces are arranged on opposite sides of each cap clamping cylinder so as to correspondingly drive each group of clamping pieces to move relatively along the guide rail through the two cap clamping cylinders, and two clamping pieces in each group of clamping pieces correspond to sealing caps clamping two ends of the adsorption tube so as to uncap or cap the adsorption tube.

As a further improvement, analytic mechanism is still including arranging the determine module who presss from both sides cap subassembly one side in, and determine module includes the injection valve, arranges the slider of injection valve one side in, sets up between injection valve and slider the cold trap of heating analytic piece and arranging injection valve one side in to order to arrange the sample adsorption tube in through the slider between injection valve and slider, the heating isothermal body is analytic to the sample adsorption tube heating, and the cold trap is used for collecting the sample under the desorption in the sample adsorption tube.

As a further improvement, an installation cavity for accommodating the adsorption tube placing frames is formed on the workbench, the adsorption tube placing frames are arranged in two rows, the sample adsorption tubes placed on each row of the adsorption tube placing frames are arranged in an upper layer and a lower layer, and the positions of the sample adsorption tubes on the upper layers of the adsorption tube placing frames are arranged to form a preferential sample injection position.

As a further improvement, each row of the adsorption tube placing frames comprises two oppositely arranged supporting walls, a plurality of clamping grooves are correspondingly formed in the two supporting walls of each row of the adsorption tube placing frames at equal intervals, and each group of the corresponding clamping grooves in the two supporting walls is used for clamping two sample adsorption tubes in an up-and-down structure.

The sample adsorption tube placing frame is provided with a space moving mechanism and a gripper mechanism, the gripper mechanism is arranged below the space moving mechanism, the space moving mechanism is provided with a photoelectric switch, the gripper mechanism is provided with a sensor, the sensor detects the position of the sample adsorption tube on the adsorption tube placing frame, and the space moving mechanism with the photoelectric switch drives the gripper mechanism to clamp the sample adsorption tube.

As a further improvement, the space moving mechanism comprises a transverse moving mechanism, a longitudinal moving assembly mounted on the transverse moving assembly, and a vertical moving assembly mounted on the longitudinal moving assembly, and the photoelectric switch is arranged on each moving assembly.

As a further improvement, tongs mechanism is including installing driver, the anchor clamps subassembly of setting on the driver at vertical removal subassembly, and the driver is the clamping jaw cylinder, and the clamping jaw cylinder is installed on vertical sliding seat of vertical removal subassembly through a connecting piece, installs the anchor clamps subassembly between two clamping jaws of clamping jaw cylinder lower part, and the anchor clamps subassembly is including setting up the connecting block on each clamping jaw and correspondingly forming the grip block in each connecting block lower part, installs on the grip block the sensor to drive two clamping jaw relative motion through the clamping jaw cylinder, and then order about two grip block centre gripping sample adsorption tubes of anchor clamps subassembly.

The above technical scheme of the utility model following beneficial effect has: the utility model discloses full autoinjection secondary thermal analysis appearance is analytic to sample adsorption tube high temperature heating through heating isothermal body, guarantees that the temperature in sample adsorption tube and the injection valve is unanimous to reduce the sample volume of remaining in the analytic process pipeline of analytic process or the injection valve, the analytic sensitivity of sample is high, the reproducibility is good, effectively strengthens the resolution ratio of chromatographic peak, and improves the survey precision and analytic efficiency and the analytic speed of sample.

Drawings

Fig. 1 is the utility model discloses full autoinjection secondary thermal analyzer's overall structure schematic diagram.

Fig. 2 is the utility model discloses full autoinjection secondary thermal analyzer's inner structure schematic diagram.

Fig. 3 is the structure schematic diagram of the adsorption tube placing rack in the analyzer.

Fig. 4 is the structure diagram of the clamping device in the analyzer.

Fig. 5 is another view structure diagram of the clamping device in the analyzer of the present invention.

Fig. 6 is the utility model discloses analyze the structure sketch map of mechanism in the appearance.

Fig. 7 is another view structure diagram of the analytic mechanism in the analyzer of the present invention.

Reference numbers and designations: 10. the device comprises a workbench, 11, a horizontal workbench, 111, a bottom plate, 112, side plates, 1121, a power supply connection port, 1122, a heat dissipation hole, 113, a horizontal plate, 1131, an installation cavity, 1132, a material passing window, 114, a support frame, 12, a vertical workbench, 121, an installation wall, 1211, a chute, 123, a top wall, 124, a side wall, 20, an adsorption tube placing frame, 21, a sample adsorption tube, 211, a sealing cap, 22, a bottom wall, 23, a support wall, 231, a clamping groove, 24, a butting end face, 30, a clamping device, 31, an installation frame, 311, a connection section, 312, a support section, 313, an installation section, 314, a blocking section, 32, a space moving mechanism, 321, a transverse moving component, 3211, a fixed seat, a transverse lead screw, 3213, a transverse sliding seat, 3214, a transverse driver, 3215, a transverse guide rail, 3216, a photoelectric switch, 322, a longitudinal moving component, 3221, an installation seat, 3222, and a longitudinal 3216, 3223. longitudinal sliding seat, 3224, longitudinal driver, 3225, plate body, 3226, mounting protrusion, 3227, longitudinal guide rail, 3228, protective cover, 323, vertical moving assembly, 3231, connecting seat, 3232, vertical lead screw, 3233, vertical sliding seat, 3234, vertical driver, 3235, connecting plate body, 3236, connecting protrusion, 3237, vertical guide rail, 3238, protective shell, 33, gripper mechanism, 331, driver, 332, clamp assembly, 3321, connecting block, 3322, clamping block, 3323, flexible clamping strip, 3324, sensor, 333, gripper cover, 40, resolving mechanism, 41, gripper cap assembly, 411, fixing frame, 412, guide rail, 413, gripper cap cylinder, 414, clamping member, 42, detection assembly, 421, sample injection valve, 4211, connecting port, 4212, electromagnetic valve, 422, slider, 4221, feed driver, 4222, pushing block, 423, heating resolving member, 4231, jacking device, 4232, heating isothermal body, 4233. a placing groove 424, a cold trap 4241, a heat preservation shell 4242, a cooling fan 50 and a control panel.

Detailed Description

The following describes embodiments of the present invention in detail with reference to the accompanying drawings and examples.

Referring to fig. 1 to 7, the full automatic sample injection secondary thermal analyzer according to the embodiment samples gas through the adsorption tube to measure ambient air and volatile organic compounds, and is widely applied to various gases with boiling points below 300 ℃ in chemical building materials, food, atmosphere and indoor environment.

The full-automatic sample introduction secondary thermal analyzer comprises a workbench 10, an adsorption tube placing frame 20 arranged on the workbench 10, a clamping device 30 arranged on the workbench 10 and used for clamping and unloading a sample adsorption tube 21, an analyzing mechanism 40 arranged inside the workbench 10 and used for detecting a gas sample in the adsorption tube 21, and a control panel 50 arranged on the workbench 10.

Referring to fig. 1-2, the worktable 10 includes a horizontal worktable 11 and a vertical worktable 12 formed on the horizontal worktable 11, a receiving cavity is formed inside the horizontal worktable 11, a supporting frame 114 is disposed in the receiving cavity for mounting the resolving mechanism 40, specifically, the horizontal worktable 11 includes a bottom plate 111, side plates 112 formed around the bottom plate 111, and horizontal plates 113 formed on the four side plates 112, and a receiving cavity for mounting the resolving mechanism 40 is formed between the bottom plate 111, the four side plates 112, and the horizontal plates 113.

Supporting legs are respectively arranged at the four corners of the bottom plate 111; the control panel 50 is installed on one of the side plates 112, the side plate is further provided with a power connection port 1121 electrically connected to the control panel 50, and heat dissipation holes 1122 are formed in the side plate 112 opposite to the side plate and the two side plates 112 adjacent to the side plate, so as to timely discharge heat generated during the operation of the instrument. One end of the horizontal plate 113 is provided with an installation cavity 1131 for installing the adsorption tube placement frame 20, and the other end of the horizontal plate 113 is provided with a material passing window 1132 for allowing the clamping device 30 to pass through the material passing window 1132 when clamping the adsorption tube 21, and the width of the material passing window 1132 is slightly larger than the length of the adsorption tube 21.

The vertical table 12 is used to block the holding device 30, and the vertical table 12 includes a mounting wall 121, a back wall disposed opposite to the mounting wall 121, a top wall 123 formed between the mounting wall 121 and the back wall, and two side walls 124. The mounting wall 121 is formed with a chute 1211, and the chute 1211 is located right above the tube placing frame 20 for the clamping device 30 to slide along the chute 1211 and clamp the suction tube 21 on the tube placing frame 20.

Referring to fig. 3, the adsorption tube placement frames 20 are disposed in the installation cavity 1131 of the horizontal workbench 11 for placing the sample adsorption tubes 21, the adsorption tube placement frames 20 are disposed in two rows, each row of the adsorption tube placement frames 20 includes a bottom wall 22 and support walls 23 formed on two opposite sides of the bottom wall 22, two other sides of the bottom wall 22 and ends of the two corresponding support walls 23 respectively form abutting end surfaces 24, each row of the adsorption tube placement frames 20 abuts against the cavity wall of the installation cavity 1131 through the abutting end surfaces 24 on the two opposite sides, a plurality of clamping slots 231 are correspondingly disposed on the two support walls 23 of each row of the adsorption tube placement frames 20 at equal intervals, so that each group of clamping slots 231 corresponding to the two support walls 23 clamp two sample adsorption tubes 21 in an up-down structure, specifically, the slot width of the clamping slot 231 is equal to the outer diameter of the sample adsorption tube 21, and the slot depth of the clamping slot 231 is twice the slot width, the bottom of each holding groove 231 is of an arc-surface structure, and the radian of each holding groove corresponds to the radian of the peripheral surface of each sample adsorption tube 21, in this embodiment, 13 holding grooves 231 are disposed on each supporting wall 23 of each row of the adsorption tube placement frames 20, each row of the adsorption tube placement frames 20 can place 26 sample adsorption tubes 21, and two rows of the adsorption tube placement frames 20 can place 52 sample adsorption tubes 21. The absorption tube 21 is used for storing a gas sample to be detected, and two ends of the absorption tube 21 are sealed by sealing caps 211. Wherein, the position of the sample adsorption tube 21 on each group of clamping slots 231 corresponding to the adsorption tube placing frame 20 is a preferred sample injection position, if there is a sample for urgent detection, the sample adsorption tube 21 can be placed at the preferred sample injection position, the clamping device 30 can automatically detect the sample adsorption tube 21 at the preferred sample injection position, and the sample injection of the sample adsorption tube 21 at the preferred sample injection position can be automatically executed without shutdown in the sequence operation process, thereby improving the efficiency.

Referring to fig. 4-5, the clamping device 30 is disposed on the horizontal table 11 and can slide along the sliding slot 1211 of the mounting wall 121 of the vertical table 12, so as to clamp the adsorption tube 21 from the group of clamping slots 231 of the adsorption tube placing frame 20 and place the adsorption tube 21 along the material passing window 1132 on the horizontal plate 113 to the analyzing mechanism 40, or clamp the adsorption tube 21 from the analyzing mechanism 40 and place the adsorption tube 21 along the material passing window 1132 to the corresponding group of clamping slots 231 of the adsorption tube placing frame 20.

The clamping device 30 comprises a mounting frame 31, a space moving mechanism 32 arranged on the mounting frame 31 and a gripping mechanism 33 arranged under the space moving mechanism 32, the mounting frame 31 is arranged on the horizontal plate 113 of the horizontal workbench 11, the mounting frame 31 comprises a connecting section 311, a supporting section 312 vertically formed on the connecting section 311, a mounting section 313 vertically formed on the supporting section 312 and a blocking section 314 vertically formed on the mounting section 313, the connecting section 311 is arranged on the horizontal plate 113 of the horizontal workbench 11, and the space moving mechanism 32 is arranged on the mounting section 313.

The space moving mechanism 32 comprises a transverse moving assembly 321 arranged on the mounting section 313, a longitudinal moving assembly 322 arranged on the transverse moving assembly 321, and a vertical moving assembly 323 arranged on the longitudinal moving assembly 322, and through mutual matching among the transverse moving assembly 321, the longitudinal moving assembly 322, and the vertical moving assembly 323, space movement tracks in six directions, namely left, right, front, rear, upper and lower directions are realized, and the gripper mechanism 33 is precisely driven to clamp the adsorption tube 21.

The transverse moving assembly 321 includes fixing bases 3211 disposed at two ends of the mounting segment 313, a transverse guide rail 3215 disposed between the two fixing bases 3211, a transverse screw 3212 rotatably connected between the two fixing bases 3211, a transverse sliding base 3213 slidably disposed on the transverse screw 3212 and slidably connected to the transverse guide rail 3215, and a transverse driver 3214 connected to one end of the transverse screw 3212, wherein a photoelectric switch 3216 is disposed on the transverse sliding base 3213 to drive the transverse screw 3212 to rotate through the transverse driver 3214, so as to drive the transverse sliding base 3213 to slide left and right along the transverse guide rail 3215 and the transverse screw 3212, and limit the sliding position of the transverse sliding base 3213 through the photoelectric switch 3216.

The longitudinal moving component 322 is disposed on the transverse sliding seat 3213 of the transverse moving component 321 and can slide along the sliding slot 1211 on the mounting wall 121, the longitudinal moving component 322 includes a mounting seat 3221, a longitudinal screw rod 3222 disposed on the mounting seat 3221, a longitudinal sliding seat 3223 slidably disposed on the longitudinal screw rod 3222 and slidably connected with the mounting seat 3221, and a longitudinal driver 3224 connected with one end of the longitudinal screw rod 3222; a protective cover 3228 is arranged outside the mounting seat 3221, one end of the mounting seat 3221 is fixed to the transverse sliding seat 3213 through a connecting plate, the other end of the mounting seat 3221 passes through the sliding slot 1211 on the mounting wall 121 and is disposed outside the sliding slot 1211, the mounting seat 3221 includes a plate body 3225 and mounting protrusions 3226 disposed at two ends of the plate body 3225, a longitudinal guide rail 3227 is disposed on the plate body 3225, the longitudinal lead screw 3222 is rotatably connected between the mounting protrusions 3226 at two ends of the mounting seat 3221, the longitudinal sliding seat 3223 is slidably disposed on the longitudinal lead screw 3222 and slidably connected with the longitudinal guide rail 3227 on the plate body 3225, a photoelectric switch 3216 is disposed on the longitudinal sliding seat 3223, so that the longitudinal lead screw 3222 is driven by the longitudinal driver 3224 to rotate, the longitudinal sliding seat 3223 is driven to slide back and forth along the longitudinal guide rail 3227 and the longitudinal lead screw 3222, and the sliding position of the longitudinal sliding seat 3223 is limited by the photoelectric switch 3216.

The vertical moving assembly 323 is arranged on a vertical sliding seat 3223 of the vertical moving assembly 322, and comprises a connecting seat 3231, a vertical screw rod 3232 arranged on the connecting seat 3231, a vertical sliding seat 3233 which is slidably arranged on the vertical screw rod 3232 and is slidably connected with the connecting seat 3231, and a vertical driver 3234 connected with one end of the vertical screw rod 3232, the connecting seat 3231 is fixedly arranged on the vertical sliding seat 3223 through a backing plate, a protective shell 3238 is arranged outside the connecting seat 3231, the connecting seat 3231 comprises a connecting plate body 3235 and connecting protrusions 3236 arranged at two ends of the connecting plate body 3235, a vertical guide rail 3237 is arranged on the connecting plate body 3235, the vertical screw rod 3232 is rotatably connected between the connecting protrusions 3236 at two ends of the connecting plate body 3235, the vertical sliding seat 3233 is slidably arranged on the vertical screw rod 3232 and is slidably connected with the vertical guide rail 3237 on the connecting plate body 3235, a photoelectric switch 3216 is arranged on the vertical sliding seat 3233, the vertical screw rod 3232 is driven to rotate by the rotation of the vertical driver 3234, so as to drive the vertical sliding seat 3233 to slide up and down along the vertical guide rail 3237 and the vertical screw rod 3232, and the sliding position of the vertical sliding seat 3233 is limited by the photoelectric switch 3216.

The gripper mechanism 33 is disposed on the vertical sliding seat 3233 of the space moving mechanism 32, so that the gripper mechanism 33 is driven by the space moving mechanism 32 to realize spatial motion trajectories in six directions, thereby accurately clamping the adsorption tube 21. The gripper mechanism 33 includes a driver 331 installed on the vertical sliding seat 3233, a gripper assembly 332 disposed on the driver 331, and a gripper cover 333 disposed outside the driver 331 and the gripper assembly 332, specifically, the driver 331 is a gripper cylinder, the gripper cylinder is installed on the vertical sliding seat 3233 through a connecting member, the gripper assembly 332 is installed between two grippers on the lower portion of the gripper cylinder, the gripper assembly 332 includes a connecting block 3321 disposed on each gripper and a clamping block 3322 correspondingly formed on the lower portion of each connecting block 3321, so that the two grippers are driven by the gripper cylinder to move relatively, and then the two clamping blocks 3322 of the gripper assembly 332 are driven to clamp the sample adsorption tube 21. Specifically, the opposite surfaces of the two clamping blocks 3322 are correspondingly provided with clamping grooves, each clamping groove is internally provided with a flexible clamping strip 3323, so that the force for clamping the sample adsorption tube 21 is more appropriate, one of the clamping blocks 3322 is also provided with a sensor 3324, the sensor 3324 is mutually matched with the photoelectric switch 3216 in the space moving mechanism 32, so as to sense the position of the sample adsorption tube 21 on the adsorption tube holding frame 20 through the sensor 3324, further, the space moving mechanism 32 with the photoelectric switch 3216 drives the two clamping blocks 3322 of the gripping mechanism 33 to rapidly and precisely clamp the sample adsorption tube 21 onto the analysis mechanism 40, in this embodiment, the sensor 3324 on the gripping mechanism 33 can automatically detect the sample adsorption tube 21 at the preferential sampling position, further, the space moving mechanism 32 with the photoelectric switch 3216 drives the two clamping blocks 3322 in the gripping mechanism 33 to rapidly and precisely clamp the sample adsorption tube 21.

Referring to fig. 6-7, the analyzing mechanism 40 is mounted on the supporting frame 114 in the accommodating cavity of the horizontal worktable 11 for analyzing and detecting the gas in the adsorption tube 21, the analyzing mechanism 40 includes a cap clamping assembly 41 and a detecting assembly 42 disposed at one side of the cap clamping assembly 41, the cap clamping assembly 41 realizes automatic uncapping and automatic capping of the sample adsorption tube 21 by using Simple-Lock locking sealing technology, and the detecting assembly 42 realizes automatic gas path leakage detection. The clamping cap assembly 41 comprises a fixed frame 411, a guide rail 412 arranged on the fixed frame 411 and a group of clamping cap cylinders 413 which are arranged on the guide rail 412 and can move relatively along the guide rail 412, the fixed frame 411 is arranged on the supporting frame 114, a group of clamping pieces 414 are arranged on the opposite sides of each clamping cap cylinder 413 so as to correspondingly drive each group of clamping pieces 414 to move relatively along the guide rail 412 through the two clamping cap cylinders 413, two clamping pieces in each group of clamping pieces 414 correspondingly clamp the sealing caps 211 at the two ends of the adsorption tube 21 and move relatively along the guide rail 412 through the clamping cap cylinders 413 so as to remove the sealing caps 211 along the two ends of the adsorption tube 21, and the uncapping process on the adsorption tube 21 is completed; the cap loading process is opposite to the cap removing process, and specifically comprises the following steps: so as to correspondingly drive each group of clamping pieces 414 to move relatively through the two clamping cap cylinders 413, the two clamping pieces in each group of clamping pieces 414 align the correspondingly clamped sealing caps 211 to the two ends of the adsorption tube 21, and the sealing caps 211 are installed to the two ends of the sample adsorption tube 21 through the movement of the clamping cap cylinders 413, thereby completing the cap installing process on the adsorption tube 21.

The detection assembly 42 is disposed on the supporting frame 114 in the accommodating cavity and disposed on one side of the cap clamping assembly 41 to analyze and detect the sample in the uncapped sample adsorption tube 21, specifically, the space moving mechanism 32 drives the two clamping blocks 3322 in the gripping mechanism 33 to clamp the uncapped sample adsorption tube 21 to the detection assembly 42 on the cap clamping assembly 41. The detecting assembly 42 includes a sample valve 421, a slider 422 disposed on one side of the sample valve 421, a heating analysis element 423 disposed between the sample valve 421 and the slider 422, and a cold trap 424 disposed on one side of the sample valve 421, the sample valve 421 is mounted on the supporting frame 114 through a bracket, and a six-way valve is disposed on a lower portion of the sample valve 421 to facilitate seamless switching between pipelines, in this embodiment, the six-way valve is disposed on a lower portion of the supporting frame 114. One side of the sample valve 421 is provided with a pressure sensor for detecting the pressure in the sample adsorption tube 21, in this embodiment, the sample valve 421 is provided with a connection port 4211 for inserting one end of the adsorption tube 21, and the sample valve 421 is further provided with a vent hole for connecting one end of an electromagnetic valve 4212.

The slider 422 is disposed on the upper portion of the supporting frame 114 for pushing the sample adsorption tube 21 into the connection port 4211 of the sample injection valve 421, the slider 422 includes a feeding driver 4221 and a push block 4222 connected to the end of the feeding driver 4221, a connection hole is disposed on the end surface of the push block 4222 for inserting the other end of the sample adsorption tube 21, a vent hole is disposed on the top surface of the push block 4222 for connecting the other end of the electromagnetic valve 4212, and the feed driver 4221 drives the push block 4222 to move, so that the two ends of the sample adsorption tube 21 are correspondingly disposed in the connection hole on the end surface of the push block 4222 and the connection port 4211 on the sample injection valve 421.

After uncapping of the sample adsorption tube 21 is completed, the uncapped sample adsorption tube 21 is clamped on the cap clamping assembly 41 by the clamping device 30 to a connecting hole of the slider 422, the push block 4222 is driven to move by the feeding driver 4221, two ends of the sample adsorption tube 21 are correspondingly placed in a connecting hole at the end face of the push block 4222 and a connecting port 4211 on the injection valve 421 for about two millimeters of depth, the clamping device 30 loosens the sample adsorption tube 21 and resets, the electromagnetic valve 4212 is opened, the sample adsorption tube 21 is inflated for about 10 seconds, then the electromagnetic valve 4212 is closed, at the moment, the pressure sensor records the gas pressure value in the sample analysis tube 21, the gas pressure in the inner tube does not drop in about 2 minutes, and the two ends of the sample analysis tube 21 are completely sealed at the detection assembly 42 and do not leak gas.

The heating analytic piece 423 is disposed on a plate surface of the supporting frame 114 between the injection valve 421 and the slider 422, and is configured to isothermally heat a tube body of the sample adsorption tube 21, the heating analytic piece 423 includes a jacking device 4231 and a heating isothermal body 4232 connected to the jacking device 4231, the jacking device 4231 is configured to drive the heating isothermal body 4232 to move to a position where the heating isothermal body 4232 is attached to the sample adsorption tube 21. The heating isothermal body 4232 is provided with a placing groove 4233 for placing the sample adsorption tube 21 therein, and the sample adsorption tube 21 is heated and analyzed by the heating isothermal body 4232, so as to ensure that the temperature of the sample adsorption tube 21 is consistent with that of the sample injection valve 421, reduce the sample residual quantity in a pipeline or in the sample injection valve 421 in the analytical process, and simultaneously heat and analyze the sample in the sample adsorption tube 21. Specifically, a heating rod and a temperature sensor are arranged inside the heating isothermal body 4232 to control and ensure the constant temperature of the heating isothermal body 4232, in this embodiment, the temperature of the heating isothermal body 4232 is 280 ℃ to 350 ℃, and preferably 300 ℃.

The cold trap 424 is arranged on one side of the sample injection valve 421, after the sample in the sample adsorption tube 21 is heated and analyzed, another electromagnetic valve 4212 is connected to the cold trap 424, the sample desorbed in the sample adsorption tube 21 is purged into the cold trap 424 through the electromagnetic valve 4212, the sample is concentrated in the cold trap 424, the cold trap 424 is rapidly heated, the sample injection valve is opened, and the sample is transmitted to the chromatograph for analysis through the transmission pipeline. Specifically, the cold trap 424 includes a semiconductor refrigeration block, a heat insulation layer disposed outside the semiconductor refrigeration block, and a heat insulation shell 4241 disposed outside the heat insulation layer, a temperature sensor, a secondary desorption tube, and a heating wire are further disposed inside the heat insulation shell 4241, a heat dissipation fan 4242 is further disposed on one side of the heat insulation shell 4241 of the cold trap 424, and the heat dissipation fan 4242 is correspondingly disposed on the side plate 112 of the horizontal workbench 11 having the heat dissipation holes 1122.

The control panel 50 is installed on a side plate 112 of the workbench 10, and is electrically connected to the analyzing mechanism 40 of the clamping device 30 for controlling each working link of the whole analyzing process, the control panel 50 adopts an intelligent color touch screen user interface and a development and debugging interface, so as to be convenient for direct setting and editing and testing, and the user can use the control panel clearly.

When the device works, a sample adsorption tube 21 which is in urgent need of detection is placed at a preferential sampling position of an adsorption tube placing frame 20, a clamping device 30 detects the position of the sample adsorption tube 21 on the adsorption tube placing frame 20 through a sensor 3324, a space moving mechanism 32 with a photoelectric switch 3216 drives two clamping blocks 3322 in a gripper mechanism 33 to rapidly and accurately clamp the sample adsorption tube 21 to a cap clamping component 41 of an analysis mechanism 40 so as to remove a sealing cap 211 along two end portions of the adsorption tube 21, the space moving mechanism 32 drives the two clamping blocks 3322 in the gripper mechanism 33 to clamp the uncapped sample adsorption tube 21 on the cap clamping component 41 to a slider 422 connecting hole of a detection component 42, a feed driver 4221 drives a push block 4222 to move, the two ends of the sample adsorption tube 21 are correspondingly placed in a connecting hole at the end face of the push block 4222 and a connecting port 4211 on a sampling valve 421 by about two millimeters depth, the clamping device 30 loosens the sample adsorption tube 21 and resets, opening one of the electromagnetic valves, inflating the sample adsorption tube 21 for about 10 seconds, then closing the electromagnetic valves, wherein the pressure sensor records the gas pressure value in the sample analysis tube 21, the gas pressure in the inner tube does not decrease in about 2 minutes, which indicates that the two ends of the sample analysis tube 21 are completely sealed at the detection component 42 and are airtight, the lifter 4231 drives the heating isothermal body 4232 to move, so that the sample adsorption tube 21 enters the placing groove 4233, the heating isothermal body 4232 is mutually attached to the sample adsorption tube 21, the sample adsorption tube 21 is heated and analyzed by the heating isothermal body 4232, the temperature in the sample adsorption tube 21 is ensured to be consistent with that in the sample injection valve 421, so as to reduce the sample residue in the pipeline in the analysis process, the other electromagnetic valve blows the sample desorbed from the sample adsorption tube 21 into the cold trap 424, so that the sample is concentrated into the cold trap 424, the cold trap 424 rapidly heats up, the sample injection valve is opened, and passes through the transmission pipeline, the sample is transferred to a chromatograph and analyzed. The jacking device 4231 drives the heating isothermal body 4232 to move, so that the sample adsorption tube 21 is separated from the placing groove 4233, the feeding driver 4221 drives the push block 4222 to move, two ends of the sample adsorption tube 21 are correspondingly separated from a connecting hole at the end face of the push block 4222 and a connecting port 4211 on the injection valve 421, meanwhile, the clamping device 30 detects the position of the sample adsorption tube 21 through the sensor 3324, the spatial moving mechanism 32 with the photoelectric switch 3216 drives the two clamping blocks 3322 in the gripping mechanism 33 to quickly and accurately clamp the sample adsorption tube 21 and move from the detection assembly 42 to the cap clamping assembly 41, a cap is installed on the adsorption tube 21, and the spatial moving mechanism 32 of the clamping device 30 drives the two clamping blocks 3322 in the gripping mechanism 33 to clamp the sample adsorption tube 21 and move from the cap clamping assembly 41 and return to the adsorption tube placing frame 20, thereby completing the whole analysis process.

To sum up, the utility model discloses full autoinjection secondary thermal analysis appearance forms 52 many sample dishes and has the preferential appearance position of advancing through the structural design that the adsorption tube put frame 20, cooperates space moving mechanism 32 and tongs mechanism 33 of clamping device 30 to centre gripping sample adsorption tube 21 fast accurately, and the urgent appearance of being convenient for is preferential to be analyzed, reduces the manpower, save time. Secondly, the sample adsorption tube 21 is heated at high temperature by the heating isothermal body 4232 for analysis, so that the temperature of the sample adsorption tube 21 is ensured to be consistent with that of the sample injection valve 421, the sample residue in a pipeline or the sample injection valve 421 in the analysis process is reduced, the sample analysis sensitivity is high, the reproducibility is good, the resolution of a chromatographic peak is effectively enhanced, and the sample analysis efficiency and the analysis rate are improved. The whole set of the instrument can meet the sample analysis requirement and the analysis frequency, the utilization rate of the instrument is improved, and the continuity and the reliability of the sample analysis work can be ensured.

The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. The utility model provides a full autoinjection secondary thermal analysis appearance, including workstation (10), the adsorption tube that is used for putting sample adsorption tube (21) of setting on workstation (10) puts frame (20), clamping device (30) that the setting is used for pressing from both sides on workstation (10) and unloads sample adsorption tube (21), the setting is used for the analytic mechanism (40) of gas sample detection in adsorption tube (21) and install control panel (50) that are used for controlling each work link of whole analytic in-process on workstation (10) inside workstation (10), its characterized in that: the analysis mechanism (40) comprises a heating analysis piece (423), the heating analysis piece (423) comprises a jacking device (4231) and a heating isothermal body (4232) connected to the jacking device (4231), the jacking device (4231) is used for driving the heating isothermal body (4232) to move to a position mutually attached to the sample adsorption pipe (21), and the sample adsorption pipe (21) is heated and analyzed through the heating isothermal body (4232) so that the temperature of the sample adsorption pipe (21) is consistent with that of a sample injection valve (421).

2. The full-automatic sample introduction secondary thermal analyzer according to claim 1, characterized in that: and a heating rod and a temperature sensor are arranged in the heating isothermal body (4232) so as to keep the temperature of the heating isothermal body (4232) constant.

3. The full-automatic sample introduction secondary thermal analyzer according to claim 1, characterized in that: the heating isothermal body (4232) is provided with a placing groove (4233) for placing the sample adsorption tube (21).

4. The full-automatic sample introduction secondary thermal analyzer according to claim 1, characterized in that: the analysis mechanism (40) comprises a cap clamping assembly (41), the cap clamping assembly (41) comprises a fixed frame (411), a guide rail (412) arranged on the fixed frame and a group of cap clamping cylinders (413) arranged on the guide rail (412) and capable of moving along the guide rail (412) relatively, a group of clamping pieces (414) are arranged on the opposite sides of each cap clamping cylinder (413) to correspondingly drive each group of clamping pieces (414) to move along the guide rail (412) relatively through the two cap clamping cylinders (413), and two clamping pieces in each group of clamping pieces (414) correspond to sealing caps (211) clamping two ends of the adsorption tube (21) to uncap or cap the sample adsorption tube (21).

5. The full-automatic sample introduction secondary thermal analyzer according to claim 4, characterized in that: analyze mechanism (40) still including arranging detection module (42) of pressing from both sides cap subassembly (41) one side in, detection module (42) include injection valve (421), arrange slider (422) of injection valve (421) one side in, set up between injection valve (421) and slider (422) heat analytic piece (423) and arrange cold trap (424) of injection valve (421) one side in to order to drive sample adsorption tube (21) through slider (422) and place in between injection valve (421) and slider (422), heat isothermal body (4232) and heat analytic to sample adsorption tube (21), cold trap (424) are used for collecting the sample under the desorption in sample adsorption tube (21).

6. The full-automatic sample introduction secondary thermal analyzer according to claim 1, characterized in that: the adsorption tube placing frame (20) is provided with two rows of adsorption tubes, the sample adsorption tubes (21) placed on each row of the adsorption tube placing frame (20) are arranged in an upper layer and a lower layer, and the positions of the sample adsorption tubes (21) on the upper layer of the adsorption tube placing frame (20) are arranged to form a preferential sample injection position.

7. The full-automatic sample introduction secondary thermal analyzer according to claim 6, characterized in that: each row of the adsorption tube placing frame (20) comprises two support walls (23) which are oppositely arranged, a plurality of clamping grooves (231) are correspondingly arranged on the two support walls (23) of each row of the adsorption tube placing frame (20) at equal intervals, and each group of corresponding clamping grooves (231) on the two support walls (23) is of an upper-lower structure and clamps two sample adsorption tubes (21).

8. The full-automatic sample introduction secondary thermal analyzer according to claim 6, characterized in that: the clamping device (30) comprises a space moving mechanism (32) and a gripper mechanism (33) arranged below the space moving mechanism (32), a photoelectric switch (3216) is arranged on the space moving mechanism (32), a sensor (3324) is arranged on the gripper mechanism (33), the position of the sample adsorption tube (21) on the adsorption tube placing frame (20) is detected through the sensor (3324), and the space moving mechanism (32) with the photoelectric switch (3216) drives the gripper mechanism (33) to clamp the sample adsorption tube (21).

9. The full-automatic sample introduction secondary thermal analyzer according to claim 8, characterized in that: the space moving mechanism (32) comprises a transverse moving assembly (321), a longitudinal moving assembly (322) installed on the transverse moving assembly (321) and a vertical moving assembly (323) installed on the longitudinal moving assembly (322), and each moving assembly is provided with the photoelectric switch (3216).

10. The full-automatic sample introduction secondary thermal analyzer according to claim 9, characterized in that: gripper mechanism (33) are including installing driver (331) on vertical removal subassembly (323), set up anchor clamps subassembly (332) on driver (331), driver (331) are the clamping jaw cylinder, and the clamping jaw cylinder is installed on vertical sliding seat (3233) of vertical removal subassembly (323) through a connecting piece, installs between two clamping jaws of clamping jaw cylinder lower part anchor clamps subassembly (332), anchor clamps subassembly (332) are including setting up connecting block (3321) on each clamping jaw and correspondingly form grip block (3322) in each connecting block (3321) lower part, install on grip block (3322) sensor (3324) to drive two clamping jaw relative motion through the clamping jaw cylinder, and then order to order about two grip block (3322) centre gripping sample adsorption tube (21) of anchor clamps subassembly (332).