阅读说明：本技术 一体式环境检测设备 (Integrated environment detection equipment ) 是由 张文磊 唐登 向杰 阳龙辉 于 2020-07-21 设计创作，主要内容包括：本发明公开了一种一体式环境检测设备,包括工作台和样品处理箱,样品处理箱内分别设有用于对气体样品进行热脱附处理的热脱附装置和用于对固液样品进行吹扫捕集处理的吹扫捕集装置,热脱附装置和吹扫捕集装置共用一个除湿井和捕集井,并能够通过阀门在热脱附处理和吹扫捕集处理之间进行切换,捕集井配置有载气吹扫管路；抓取机构,能够适用于抓取至少两种规格的样本瓶,并将抓取的样本瓶送至对应的热脱附工位或吹扫捕集工位。能够满足固液气三种样品的处理检测,大大提高测效率,并具有较强的除水能力,能更高效地减少对分析仪的影响,提高检测精度,整体结构紧凑,体积小,具有极好的通用性和实用性等。(The invention discloses an integrated environment detection device, which comprises a workbench and a sample processing box, wherein a thermal desorption device for performing thermal desorption treatment on a gas sample and a sweeping and trapping device for sweeping and trapping a solid-liquid sample are respectively arranged in the sample processing box, the thermal desorption device and the sweeping and trapping device share a dehumidification well and a trapping well, switching can be performed between the thermal desorption treatment and the sweeping and trapping treatment through a valve, and the trapping well is provided with a carrier gas sweeping pipeline; snatch the mechanism, can be applicable to and snatch the sample bottle of two kinds of specifications at least to the sample bottle that will snatch is delivered to corresponding thermal desorption station or sweeps the entrapment station. The processing that can satisfy three kinds of samples of solid-liquid gas detects, improves the efficiency of survey greatly to have stronger dewatering ability, can reduce the influence to the analysis appearance more high-efficiently, improve and detect the precision, overall structure is compact, and is small, has fabulous commonality and practicality etc..)

1. An integrated environmental detection apparatus, comprising:

a table (100);

the sample treatment box (200) is fixedly arranged on the workbench (100), a thermal desorption station and a purging and trapping station are arranged in the sample treatment box, a thermal desorption device (300) for performing thermal desorption treatment on a gas sample and a purging and trapping device (400) for performing purging and trapping treatment on a solid-liquid sample are respectively arranged on the thermal desorption station and the purging and trapping station, the thermal desorption device (300) and the purging and trapping device (400) share one dehumidification well (210) and one trapping well (220), switching can be performed between the thermal desorption treatment and the purging and trapping treatment through a valve, and the trapping well (220) is provided with a carrier gas purging pipeline (230);

Snatch mechanism (500), the activity sets up with workstation (100) top, and it can be applicable to and snatchs the sample bottle of two kinds of specifications at least to send the sample bottle that snatchs to corresponding thermal desorption station or sweep the entrapment station.

2. The integrated environmental detection apparatus of claim 1, wherein: the thermal desorption device (300) comprises a thermal desorption pressure head (310) and a thermal desorption base (320) which are arranged oppositely up and down, and a lifting adjusting mechanism A (330) which is used for driving the thermal desorption pressure head (310) to lift and fall to be close to or far away from the thermal desorption base (320);

sweep entrapment device (400) including about just to sweep head (410) and sweep base (420) of setting to and be used for driving sweep head (410) to go up and down in order to be close to or keep away from the lift guiding mechanism B (430) that sweeps base (420), one side of sweeping base (420) is equipped with temporarily places base (460), lift guiding mechanism B (430) and lift guiding mechanism A (330) are vertical to be set up side by side.

3. The integrated environment detection apparatus according to claim 1 or 2, characterized in that: the thermal desorption device (300) is connected with an air inlet branched pipe A (340) and an air outlet branched pipe A (350), the purging and trapping device (400) is connected with an air inlet branched pipe B (440) and an air outlet branched pipe B (450), the air inlet branched pipe A (340) and the air inlet branched pipe B (440) are connected with the same air inlet main pipe (201) through a number six electromagnetic valve (20f), and the air outlet branched pipe A (350) and the air outlet branched pipe B (450) are connected with the same air outlet main pipe (202) through a number nine electromagnetic valve (20 i);

The workbench (100) is provided with a pure water bottle (110) and an internal standard bottle (120), and the pure water bottle (110) and the internal standard bottle (120) are respectively connected with the air inlet manifold (201) through filling pipelines.

4. The integrated environmental detection apparatus of claim 3, wherein: the outlet end of the gas outlet header pipe (202), and the inlet and outlet ends of the dehumidification well (210), the capture well (220) and the carrier gas purging pipeline (230) are connected with the same pneumatic eight-way valve (600), and the pneumatic eight-way valve (600) is connected with a vent pipe (203).

5. The integrated environmental detection apparatus of claim 4, wherein: the air inlet main pipe (201) is provided with an air inlet branch pipe C (204), the emptying pipe (203) is provided with a fourth electromagnetic valve (20d), and the air inlet branch pipe C (204) is connected with the fourth electromagnetic valve (20 d).

6. The integrated environmental detection apparatus of claim 4, wherein: the air inlet main pipe (201) is connected with a preheating branch pipe (205), and the preheating branch pipe (205) is connected with the outlet end of the dehumidification well (210) through a No. ten electromagnetic valve (20 j).

7. The integrated environmental detection apparatus of claim 3, wherein: the sample processing box (200) is arranged along the outer edge of the workbench (100) and comprises a sample processing chamber (240) arranged along the width direction of the workbench (100) and a gas processing and control chamber (250) arranged along the length direction of the workbench (100), the thermal desorption device (300) and the purging and trapping device (400) are both positioned in the sample processing chamber (240), the sample processing chamber (240) is provided with a window A (241) and a window B (242) which are correspondingly arranged, and the solution bottle (110) and the internal standard bottle (120) are positioned on one side opposite to the sample processing chamber (240).

8. The integrated environmental detection apparatus of claim 7, wherein: the gas processing and control room (250) is internally provided with a well installation area (251), an intermediate part installation area (252) and an electric control part installation area (253) which are separated by partition plates, the dehumidification well (210) and the trap well (220) are positioned in the well installation area (251), the well installation area (251) is internally provided with a fan set A (254) for cooling the trap well (220), the sample processing room (240) is internally provided with a fan set B (243) which is provided with auxiliary heat dissipation and corresponds to the thermal desorption device (300), and the electric control part installation area (253) is internally provided with a fan set C (255) for auxiliary heat dissipation.

9. The integrated environmental detection apparatus of claim 1, wherein: the grabbing mechanism (500) comprises a three-axis sliding module (510) and an air cylinder (520) fixedly arranged on a Z-direction module (511) of the three-axis sliding module (510), sliding blocks (521) distributed along the circumferential direction are arranged at the bottom of the air cylinder (520), the sliding blocks (521) can slide along the radial direction under the driving of the air cylinder (520), and each sliding block (521) is provided with a clamping block (530) vertically arranged;

the inner side of each clamping block (530) is provided with at least two clamping surfaces (531) arranged along the height of the clamping block, the clamping surfaces (531) on the same clamping block (530) are distributed in a step shape, when the cylinder (520) drives the sliding block (521) to slide inwards, the clamping surfaces (531) at the same height surround to form clamping cavities, and the inner diameter of each clamping cavity is gradually increased from top to bottom.

Technical Field

The invention relates to the technical field of environment detection, in particular to integrated environment detection equipment.

Background

Along with the development of society, various environmental protection problems are increasingly aggravated, the degree of layer of attention to the environment is higher and higher, the environment protection not only concerns the living space of human beings, but also directly influences the economic development and carries out the environment protection work, one of the common measures of the environment protection work is that an environment solid, liquid or gas sample is required to be accurately taken, the sample is accurately extracted in a laboratory, and then the extracted substances are detected and analyzed.

In the extraction process of the environmental sample, due to the fact that sampling bottles are adopted in the extraction process of the solid-liquid-gas sample and extraction methods are different, the samples in the same batch are often required to be sent to different sampling extraction machines for extraction, operation steps are increased relatively, detection efficiency is reduced, environmental detection cost is increased, and popularization and use of detection technology are not facilitated.

Disclosure of Invention

In view of the above, the present invention provides an integrated environment detection device, so as to improve the versatility of use, and one device can complete the processing of three different solid-liquid-gas samples for being sent to a subsequent analysis device.

In order to achieve the purpose, the technical scheme of the invention is as follows:

an integral type environment detection equipment, its key lies in, includes:

a work table;

the sample processing box is fixedly arranged on the workbench, a thermal desorption station and a purging and trapping station are arranged in the sample processing box, a thermal desorption device for performing thermal desorption treatment on a gas sample and a purging and trapping device for performing purging and trapping treatment on a solid-liquid sample are respectively arranged on the thermal desorption station and the purging and trapping station, the thermal desorption device and the purging and trapping device share a dehumidification well and a trapping well, switching can be performed between the thermal desorption treatment and the purging and trapping treatment through a valve, and the trapping well is configured with a carrier gas purging pipeline;

Snatch the mechanism, the activity sets up with the workstation top, and it can be applicable to and snatchs the sample bottle of two kinds of specifications at least to the sample bottle that will snatch sends corresponding thermal desorption station or sweeps the entrapment station.

Scheme more than adopting, mainly realize snatching of different sample bottles through snatching the mechanism to transport it to the thermal desorption station that corresponds or sweep the entrapment station, carry out thermal desorption to gaseous sample and handle, and sweep the entrapment to liquid or solid sample and handle, satisfy the processing of three kinds of form samples and draw, thermal desorption and the dehumidification well and the entrapment well sharing of sweeping the entrapment simultaneously are favorable to reducing the equipment volume, simplify the pipeline structure, the production installation of being convenient for, and prevent to reveal, improve security etc..

Preferably, the method comprises the following steps: the thermal desorption device comprises a thermal desorption pressure head and a thermal desorption base which are arranged oppositely up and down, and a lifting adjusting mechanism A for driving the thermal desorption pressure head to lift and fall to be close to or far away from the thermal desorption base;

the sweeping and trapping device comprises a sweeping head and a sweeping base which are vertically and rightly arranged, and a lifting adjusting mechanism B which is used for driving the sweeping head to lift so as to be close to or far away from the sweeping base, wherein the base is temporarily placed on one side of the sweeping base, and the lifting adjusting mechanism B and the lifting adjusting mechanism A are vertically arranged side by side.

Scheme more than adopting is favorable to further reducing thermal desorption device and sweeps the occupation space of entrapment device, is favorable to check out test set's miniaturization promptly, is favorable to improving the entrapment efficiency of sweeping through placing the base temporarily simultaneously.

Preferably, the method comprises the following steps: the thermal desorption device is connected with an air inlet branch pipe A and an air outlet branch pipe A, the sweeping and trapping device is connected with an air inlet branch pipe B and an air outlet branch pipe B, the air inlet branch pipe A and the air inlet branch pipe B are connected with the same air inlet main pipe through a number six electromagnetic valve, and the air outlet branch pipe A and the air outlet branch pipe B are connected with the same air outlet main pipe through a number nine electromagnetic valve;

the workbench is provided with a pure water bottle and an internal standard bottle, and the pure water bottle and the internal standard bottle are respectively connected with the air inlet main pipe through filling pipelines. By adopting the scheme, the functions of thermal desorption and blowing and trapping treatment can be conveniently switched according to the needs, pure water is added according to the needs to dilute solid and liquid, and standard substances and the like are added.

Preferably, the method comprises the following steps: the outlet end of the air outlet header pipe, and the inlet and outlet ends of the dehumidification well, the capture well and the carrier gas purging pipeline are connected with the same pneumatic eight-way valve, and the pneumatic eight-way valve is connected with a vent pipe. By adopting the scheme, the pneumatic eight-way valve can better switch on and off among pipelines, meet more functional requirements, facilitate control, simplify a pipeline structure, facilitate installation and layout and the like.

Preferably, the method comprises the following steps: the air inlet main pipe is provided with an air inlet branch pipe C, the emptying pipe is provided with a fourth electromagnetic valve, and the air inlet branch pipe C is connected with the fourth electromagnetic valve. Scheme more than adopting, when the branch pipe C that admits air and blow-down pipe intercommunication, and the discharge end of blow-down pipe is closed through No. four solenoid valves, switches through the break-make mouth of pneumatic eight-way valve again, can form ageing pipeline, carries out ageing reduction processing to the catch well to detect next time, be favorable to improving and detect the precision.

Preferably, the method comprises the following steps: the air inlet main pipe is connected with a preheating branch pipe, and the preheating branch pipe is connected with the outlet end of the dehumidification well through a number ten electromagnetic valve. Scheme more than adopting, accessible valve switches and forms preheating pipe way, preheats the dehumidification well, is favorable to improving its dehumidification efficiency like this.

Preferably, the method comprises the following steps: the outer fringe setting of workstation is followed to the sample processing case, and it includes the sample processing room that sets up along workstation width direction to and the gas treatment and the control room that set up along workstation length direction, thermal desorption device all is located the sample processing room with the entrapment device that sweeps, has the window A and the window B that correspond the setting with one of them on the sample processing room, solution bottle and interior label bottle are located one side relative with the sample processing room. By adopting the layout scheme, the stability of the workbench is improved, the pipeline is convenient to connect and install, and meanwhile, the L-shaped treatment box structure enables the overall structure to be more compact.

Preferably, the method comprises the following steps: have in the gas treatment and the control room and separate through the baffle and be formed with well installing zone, intermediate part installing zone and automatically controlled piece installing zone, dehumidification well and trap well are located the well installing zone, be equipped with the fan assembly A that is used for cooling to the trap well in the well installing zone, the indoor interior thermal desorption device that corresponds of sample processing is equipped with supplementary radiating fan assembly B, be equipped with in the automatically controlled piece installing zone and be used for supplementary radiating fan assembly C. The mode of subregion installation more than adopting is favorable to reducing mutual interference, and the cooling efficiency who is particularly favorable to accelerating the catch pit optimizes the analytic efficiency of catch pit, reduces and leaks risk etc. is favorable to reducing the influence of high temperature to mechanism's part, increase of service life etc. through fan group B and fan group C in addition.

Preferably, the method comprises the following steps: the grabbing mechanism comprises a three-axis sliding module and an air cylinder fixedly arranged on a Z-direction module of the three-axis sliding module, the bottom of the air cylinder is provided with sliding blocks distributed along the circumferential direction, the sliding blocks can slide along the radial direction of the air cylinder under the driving of the air cylinder, and each sliding block is provided with a clamping block arranged vertically;

the inner side of the clamping block is provided with at least two clamping surfaces arranged along the height of the clamping block, the clamping surfaces on the same clamping block are distributed in a ladder shape, when the air cylinder drives the sliding block to slide inwards, the clamping surfaces at the same height surround to form clamping cavities, and the inner diameter of each clamping cavity is gradually increased from top to bottom. By adopting the scheme, the clamping cavities with various different diameters can be obtained within the smaller sliding stroke range of the sliding block, so that the requirements for clamping sample bottles with different sizes are met, the design is ingenious, the realization is convenient, the size is small, and the equipment size reduction is facilitated.

Compared with the prior art, the invention has the beneficial effects that:

by adopting the integrated environment detection equipment provided by the invention, the grabbing of sample bottles of different samples and the thermal desorption or blowing and trapping treatment of different samples can be completed on the same equipment, and the treated gas can be sent into the analysis for analysis through carrier gas after being dehumidified and trapped, so that the detection efficiency can be greatly improved, the integrated environment detection equipment has stronger water removal capability, can more efficiently reduce the influence on an analyzer, improves the detection precision, has compact integral structure, small volume, excellent universality, practicability and the like, simplifies pipelines, and is favorable for reducing leakage hidden troubles.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a rear side view of the structure of FIG. 1;

FIG. 3 is a schematic view of the internal structure of the sample processing chamber;

FIG. 4 is an isometric view of FIG. 3;

FIG. 5 is a schematic view of the internal structure of the gas processing and control chamber;

FIG. 6 is a schematic structural view of the gripper mechanism;

FIG. 7 is a schematic view of a clamp block installation;

FIG. 8 is a schematic view of a clamping block structure;

FIG. 9 is a schematic view of the piping connection and the fluid flow during purging and trapping according to the present invention;

FIG. 10 is a schematic view of fluid flow during thermal desorption;

FIG. 11 is a schematic view of fluid flow during pre-heating of a desiccant well;

FIG. 12 is a schematic view of the fluid flow as the sample enters the analyzer;

FIG. 13 is a schematic representation of fluid flow as a trap ages.

Detailed Description

The present invention will be further described with reference to the following examples and the accompanying drawings.

Referring to fig. 1 to 13, an integrated environment detecting apparatus includes a worktable 100, and a sample processing box 200 and a grasping mechanism 500 disposed on the worktable 100, as shown in fig. 1 to 5, the sample processing box 200 is substantially L-shaped in the present application, and is disposed along an outer edge of the worktable 100, and mainly includes a sample processing chamber 240 and a gas processing and controlling chamber 250, both of which are hollow structures, and the sample processing chamber 240 and the gas processing and controlling chamber 250 are relatively separated by a partition, wherein the sample processing chamber 240 is disposed along a width direction of the worktable 100, and the gas processing and controlling chamber 250 is disposed along a length direction of the worktable 100.

In the present embodiment, the thermal desorption device 300 and the purging and trapping device 400 share one dehumidification well 210 and one trapping well 220, and the communication state between the device and the two wells can be switched through a valve, wherein the trapping well 220 is also configured with a carrier gas purging pipeline 230, the carrier gas purging pipeline 230 is mainly used for introducing a carrier gas into the trapping well 220, and sending the trapped sample into an external analyzer along with the carrier gas, such as a GC or a GC-MC, and the carrier gas purging pipeline 230 mainly includes a carrier gas inlet pipe 231 and a sample carrying outlet pipe 232.

Snatch mechanism 500 mainly including set firmly with workstation 100 on the triaxial slip module 510, triaxial slip module 510 is including respectively along the X that workstation platform 100 length and width direction set up to module and Y to the module, and along the Z that workstation 100 direction of height set up to module 511, Z is equipped with the centre gripping subassembly on to module 511, the centre gripping subassembly can be applicable to and snatch the sample bottle of at least two kinds of diameter specifications, and send corresponding thermal desorption station and sweep the entrapment station through triaxial slip module 510, carry out sample processing.

The specific structure of the clamping assembly refers to fig. 6 to 8, and the clamping assembly mainly includes a cylinder 520, at least two blocks 521 uniformly distributed along the circumferential direction of the cylinder 520 are arranged at the bottom of the cylinder 520, a slider 521 is in sliding fit with the cylinder 520 and can slide along the radial direction of the cylinder 520 under the driving of the cylinder 520, a clamping block 530 is connected to the bottom of the slider 521, the clamping block 530 is vertically arranged, a connecting groove 532 adapted to the slider 521 is arranged at the top of the clamping block 530, as shown in the figure, at least two clamping surfaces 531 are arranged on the inner side of the clamping block 530, the clamping surfaces 531 are cambered surfaces, the clamping surfaces 531 are distributed in a step shape from top to bottom, and on the same clamping block 530, the clamping surface 531 on the upper portion is closer to the center of.

Thus, when the cylinder 520 drives the slider 521 to slide inwards, the clamping surfaces 531 at the same height of all the clamping blocks 530 surround to form a clamping cavity, and the inner diameter of each clamping cavity gradually increases from top to bottom, as shown in fig. 7, in this embodiment, the clamping block 530 has two upper and lower clamping surfaces 531, when the slider 521 slides inwards, the upper clamping surface 531 surrounds to form an upper clamping cavity 540, and the lower clamping surface 531 surrounds to form a lower clamping cavity 550, and the inner diameter of the lower clamping cavity 550 is greater than the inner diameter of the upper clamping cavity 540.

In this embodiment, in order to avoid the grabbing process, damage is caused to the sample bottle, so the end of the clamping surface 531 all has the guide inclined plane 533 facing outwards, in addition, because the thermal desorption device 300 and the purging and trapping device 400 are both located in the sample processing chamber 240, so the window a241 and the window B242 have been seted up on the sample processing chamber 240 near the side of the grabbing mechanism 500, the window a241 and the window B242 respectively correspond to the thermal desorption device 300 and the purging and trapping device 400, and simultaneously the clamping component is installed on the Z-axis module 511 through the L-shaped connecting plate 570, so that the clamping component can extend into the sample processing chamber 240 through the corresponding window, thereby preventing interference.

Referring to fig. 3 and 9, the thermal desorption apparatus 300 of the present application mainly includes a thermal desorption head 310 and a thermal desorption base 320, which are disposed opposite to each other from top to bottom, and a lifting adjustment mechanism a330 for driving the thermal desorption head 310 to vertically lift and lower to be far away from or close to the thermal desorption base 320, wherein the thermal desorption head 310 is connected to an air inlet branch pipe a340 and an air outlet branch pipe a350, the purge and trap apparatus 400 mainly includes a purge head 410 and a purge base 420, which are disposed opposite to each other from top to bottom, and a lifting adjustment mechanism B430 for driving the purge head 410 to vertically lift and lower to be far away from or close to the purge base 420, wherein the purge head 410 is connected to an air inlet branch pipe B440 and an air outlet branch pipe B450, in this embodiment, the lifting adjustment mechanism a330 and the lifting adjustment mechanism B430 are disposed side by side along the width direction of the worktable 100, and both adopt a screw motor driving structure to sufficiently ensure stable movement, and, there is also a temporary placement base 460, alongside the purge base 420, for temporarily placing the sample vial to be processed.

Referring to fig. 9 to 13, in the present application, the utilization efficiency of the pipeline is improved by switching the valves to accomplish different functions, which greatly reduces the complexity of the pipeline, and is as follows:

the air inlet branch pipe 340 and the air inlet branch pipe B440 are connected with the same air inlet main pipe 201 through a six-number electromagnetic valve 20f, the air inlet main pipe 201 can be communicated with the air inlet branch pipe 340 or communicated with the air inlet branch pipe B440 through switching of the six-number electromagnetic valve 20f, the air outlet branch pipe A350 and the air outlet branch pipe B450 are connected with the same air outlet main pipe 202 through a nine-number battery valve 20i, meanwhile, a seventh battery valve 20g is arranged at the inlet end of the air inlet main pipe 201, and an eighth battery valve 20h is arranged at the outlet end of the air outlet main pipe 202, so that all corresponding pipelines are cut off or communicated and switched, and the operation reliability of the valves is improved.

Meanwhile, in order to further increase the functions of the device, a pure water bottle 110 and an internal standard bottle 120 are arranged on the workbench 100, the pure water bottle 110 and the internal standard bottle 120 are positioned on the opposite side of the workbench 100 to the sample processing chamber 240 to keep the overall stability of the workbench 100, the pure water bottle 110 is mainly used for containing pure water or other diluents, the internal standard bottle 120 is used for containing internal specific calibration objects so as to be easier to detect and analyze at a later stage, the pure water bottle 110 and the internal standard bottle 120 are connected with the air inlet main pipe 201 through corresponding filling pipelines and are correspondingly provided with a plunger pump A111 and a plunger pump B121, and a first electromagnetic valve 20a and a second electromagnetic valve 20B respectively, the pure water bottle 110 and the internal standard bottle 120 can be singly communicated or simultaneously communicated or disconnected with the air inlet main pipe 201 or simultaneously through switching of the first electromagnetic valve 20a and the second electromagnetic valve 20B, and when singly communicated or simultaneously communicated, the plunger pumps can be passed through as required, corresponding diluent or internal standard substance is pumped into the air inlet main pipe 201 and then enters the air inlet branch pipe 340 or the air inlet branch pipe B440.

In order to further realize the switching of multiple functions and the switching efficiency, the pipeline of the present application is provided with a pneumatic eight-way valve 600, the outlet end of the gas outlet header 202, the outlet end of the carrier gas inlet pipe 231, the inlet ends of the sample carrying outlet pipe 232, and two ends of the dehumidifying well 210 and the trap well 220 are respectively connected with one interface of the pneumatic eight-way valve 600, as shown in the figure, the pneumatic eight-way valve 600 has a first interface 601, a second interface 602, a third interface 603, a fourth interface 604, a fifth interface 605, a sixth interface 606, a seventh interface 607, and an eighth interface 608, the outlet end of the gas outlet header 202 is connected with the fifth interface 605, the outlet end of the carrier gas inlet pipe 231 is connected with the first interface 601, the inlet end of the sample carrying outlet pipe 232 is connected with the second interface 602, and the inlet end and the outlet end of the dehumidifying well 210 (with reference to the flowing direction of the sample gas during thermal desorption or purging and trapping) are respectively connected with the sixth, the inlet end and the outlet end of the trap well 220 (by taking the flow direction of the sample gas during thermal desorption or purging trapping as reference) are respectively connected with a third interface 603 and an eighth interface 608, and in addition, a seventh interface 607 is connected with a vent pipe 203.

On this basis, the air inlet header pipe 201 is connected with an air inlet branch pipe C204 through a third electromagnetic valve 20C, the emptying pipe 203 is provided with a fourth electromagnetic valve 20d, the air inlet branch pipe C204 is connected with the fourth electromagnetic valve 20d, and the on-off of the air inlet branch pipe C204 and the emptying pipe 203 can be realized through the switching of the fourth electromagnetic valve 20 d.

In addition, the inlet manifold 201 is further connected to a preheating branch pipe 205, and preheating of the dehumidification well 210 is mainly achieved by the preheating branch pipe 205, in this embodiment, in order to shorten the length of the pipeline, the preheating branch pipe 205 is connected to the inlet branch pipe C204 when passing through the fifth electromagnetic valve 20e, the other end of the preheating branch pipe 205 is connected to the outlet end of the dehumidification well 210 through the tenth electromagnetic valve 20j, and the position of the tenth electromagnetic valve 20j on the pipeline is located between the dehumidification well 210 and the pneumatic eight-way valve 600.

Referring to fig. 1 to 5 again, the gas processing and control chamber 250 is sequentially partitioned by partition plates to form three relatively independent spaces, which are sequentially a well installation region 251, an intermediate component installation region 252 and an electric control component installation region 253 along a direction away from the sample processing chamber 240, the dehumidification well 210 and the trap well 220 are located in the well installation region 251, sleeves for pipelines to pass through are respectively arranged between the sample processing chamber 240 and the well installation region 251 and between the well installation region 251, the intermediate component installation region 252 and the electric control component installation region 253, the intermediate component installation region 252 is mainly used for installing components such as plunger pumps, electromagnetic valves and pressure reducing valves, in this embodiment, an installation box 258 is arranged at the upper part of the intermediate component installation region 252, and the pneumatic eight-way valve 600 and ten electromagnetic valves are all uniformly installed on the installation box 258, so as to facilitate connection and installation of control lines, realize modular assembly and improve production assembly efficiency of the whole machine, and is also beneficial to later maintenance and repair, etc.

The electric control part installation area 253 is mainly used for installing various electric control elements such as a control panel, a heating panel, a plunger pump driver, a relay module and the like, and the mutual interference is avoided through partition installation.

Considering that the temperature has a great influence on the detection result or the equipment state, in this embodiment, an auxiliary heat dissipation fan set B243 is disposed in the sample processing chamber 240 corresponding to the thermal desorption base 320, a fan set a254 for cooling the trap 220 is disposed on a side wall of the well mounting region 251, a fan set C255 for auxiliary heat dissipation is disposed on a side wall of the electrical control unit mounting region 253, the fan sets a254, B243 and C255 each include one or more fans and a corresponding heat sink, besides the fans, other auxiliary heat dissipation structures for auxiliary heat dissipation may be employed, a signal plug board 256 and a leakage switch 257 are disposed on a rear side wall of the gas processing and control chamber 250 corresponding to the electrical control unit mounting region 253, and are connected to the trap 220, and other gas inlets and outlets of the bellows 2500 for mounting the sample carrying outlet 232 and the pressure gauge are disposed at the rear portion of the gas processing and control chamber 250 through the mounting board 2501, and corresponds to the location of the intermediate member seating region 252.

Referring to the integrated environment detection apparatus shown in fig. 1 to 13, various states thereof are as follows:

with reference to fig. 9 and 12, the solid-liquid sample is purged and trapped, in fig. 9, the inlet manifold 201 is communicated with the inlet branch pipe B440, the outlet branch pipe B450 is communicated with the outlet manifold 202, in the pneumatic eight-way valve 600, the sixth port 606 is communicated with the fifth port 605, the fourth port 604 is communicated with the third port 603, and the eighth port 608 is communicated with the seventh port 607.

Snatch the gas-liquid sample bottle through snatching mechanism 500 and place on sweeping base 420, make the sweep head 410 descend through lift adjustment mechanism B430 simultaneously, and make the metal needle of connecting line on it stretch into the sample bottle, heating nitrogen gas or other inert gases get into through inlet manifold 201, pass through solenoid valve 20a and No. two solenoid valves 20B as required, pour into dilution liquid or interior standard substance into the pipeline, get into the sample bottle through inlet manifold B440 again and sweep the entrapment, the gas of extraction gets into outlet manifold 202 through outlet manifold B450, it dehumidifies to get into dehumidification well 210 in proper order again, the gas of blowing out is caught in entrapment well 220, and auxiliary gas then discharges through blow-down pipe 203.

After the trapping is finished, the trapped gas can be sent into the analyzer through the carrier gas purging pipeline 230, at the moment, the second connector 602 is communicated with the third connector 603, the first connector 601 is communicated with the eighth connector 608, the GC carrier gas enters the trap well 220 through the carrier gas inlet pipe 231, the trapped gas is blown out again through the carrier gas and is sent into the analyzer through the sample carrying outlet pipe 232 for detection and analysis, in the process, the gas inlet main pipe 201 can be communicated with the gas inlet branch pipe C204, the gas is reversely filled into the dehumidifying well 210 through the preheating branch pipe 205 to be cleaned, the seventh connector 607 is communicated with the sixth connector 606, and the cleaned gas is discharged through the vent pipe 201.

Referring to fig. 9 and 12, the thermal desorption process is performed on the liquid sample, and the operation steps and the fluid flow direction are substantially the same as those of the solid-liquid purging and trapping process, except that the inlet manifold 201 is communicated with the inlet branch pipe a340, and the outlet branch pipe a350 is communicated with the outlet manifold 202.

Referring to fig. 11, a preheating process for the dehumidification well 210 is as follows, the air inlet main pipe 201 is communicated with the air inlet branch pipe C204 through the third electromagnetic valve 20C, the air inlet branch pipe C204 is communicated with the preheating branch pipe 205 through the fifth electromagnetic valve 20e, the preheating branch pipe 205 is communicated with the outlet end of the dehumidification well 210 through the tenth electromagnetic valve 20j, the outlet end of the dehumidification well 210 is disconnected from the fourth interface 604, the fifth interface 605 is communicated with the sixth interface 606, the air outlet main pipe 202 is communicated with the air outlet branch pipe B450, hot air enters from the air inlet main pipe 201, sequentially passes through the air inlet branch pipe 204, the preheating branch pipe 205, the dehumidification well 210 and the air outlet main pipe 202, and is finally discharged through a metal needle connected to the tail end of the air outlet branch pipe B450, so as to complete the preheating of the dehumidification well 210.

Referring to fig. 13, the aging process for the trap wells 220 and the dehumidification wells 210 is as follows, wherein the air inlet header 201 and the air inlet branch pipe C204 are in a communication state, the air inlet branch pipe C204 and the air release pipe 203 are in a communication state, the emptying end of the air release pipe 203 is in a closed state, the seventh interface 607 and the eighth interface 608 in the pneumatic eight-way valve 600 are in communication, the third interface 603 and the fourth interface 604 are in communication, the fifth interface 605 and the sixth interface 606 are in communication, and the air outlet header 202 and the air outlet branch pipe B450 are in communication.

Aged gas enters from the gas inlet header pipe 201, sequentially passes through the gas inlet branch pipe C204 and the blow-down pipe 203, sequentially reversely flows through the trap well 220 and the dehumidification well 210, reversely flows into the gas outlet branch pipe 450 from the gas outlet header pipe 202, and is discharged through a metal needle connected with the tail end of the gas outlet branch pipe B450, namely the trap well 220 and the dehumidification well 210 are completed, so that thermal desorption or purging and trapping treatment of next batch of samples can be performed.

Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.