Portable gas chromatography device for rapid screening

Abstract

The utility model relates to the technical field of gas chromatographic instruments, and discloses a portable gas chromatographic device capable of quickly screening, which comprises a bottom shell, a top cover is rotatably connected to the rear end of the top of the bottom shell, the front side of the outer wall of the bottom shell is connected with the top cover through a fixing component, slots are formed in the left end and the right end of the front side of the top cover, and the top cover is connected with the bottom shell through a fixing component. A sliding block is slidably connected to the inner wall of the inserting groove, second limiting grooves are formed in the top ends of the left side and the right side of the outer wall of the top cover, the second limiting grooves are connected with the sliding block through sliding assemblies, a connecting block is detachably connected to the inner wall of the inserting groove, a through groove is formed in the front side of the connecting block, and a light barrier is fixedly connected to the bottom end of the front side of the connecting block. According to the utility model, through the light blocking structure formed by the slot, the slide block and the like, the problem that outdoor data checking is inconvenient is solved, and the detection convenience is improved; meanwhile, by utilizing structures such as a shaft rod, the device can be quickly and stably opened and fixed, shaking is avoided, and the accuracy of data during soil organic pollutant detection is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of gas chromatography technology, and in particular to a portable gas chromatography device for rapid screening. Background Technology

[0002] The portable gas chromatograph for rapid screening is a convenient instrument specifically designed for on-site detection of organic pollutants in soil. It can rapidly separate and analyze organic pollutants in soil samples, such as pesticide residues and petroleum hydrocarbons, allowing testing personnel to obtain information on the type and concentration of pollutants in a short time without having to bring samples back to the laboratory. This effectively improves the efficiency of soil organic pollutant detection and provides timely data support for soil pollution remediation and environmental monitoring.

[0003] However, in practical use, it has been found that existing portable gas chromatography devices have many problems when used outdoors:

[0004] First, the lack of a dedicated light-blocking structure means that when staff conduct testing outdoors in strong sunlight, the intense light shines directly onto the device's display screen, making the data unclear. Staff must then use their hands to shield their eyes from the sunlight to view the data, which is not only extremely inconvenient but also increases the risk of operational errors due to obstructed vision, significantly reducing testing efficiency. In severe weather conditions such as strong winds, manual light shielding makes stable operation even more difficult, further hindering the testing process. Second, the positioning and fixing structure after the device is opened is missing or incomplete. During actual testing, due to the complex soil environment, it is difficult for testing personnel to find a completely stable placement surface. The device, lacking stable support, is prone to shaking, and the internal precision components are affected by vibration, leading to unstable detection signals and inaccurate test results. This severely impacts the reliability of test results for testing projects such as soil organic pollutants, which require precise data to support remediation decisions. It may lead to misjudgments of the degree of pollution and delays in soil remediation work.

[0005] In response to this technical problem, this application proposes a portable gas chromatography device for rapid screening. Utility Model Content

[0006] To address the problems of insufficient light-blocking structure and poor positioning in existing technologies, this application provides a portable gas chromatography device for rapid screening.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A portable gas chromatograph for rapid screening includes a bottom shell, a top cover rotatably connected to the rear end of the bottom shell, a fixing component connecting the front side of the outer wall of the bottom shell to the top cover, slots on both the left and right ends of the front side of the top cover, sliders slidably connected to the inner walls of the slots, limit grooves on the top ends of both the left and right sides of the outer wall of the top cover, the limit grooves being connected to the sliders via sliding components, a connecting block detachably connected to the inner wall of the slot, a through groove on the front side of the connecting block, and a light-blocking plate fixedly connected to the bottom front end of the connecting block.

[0009] As a further improvement of this utility model, a limiting groove is provided at the top of the left and right sides of the outer wall of the bottom shell. A shaft is slidably connected to the inner wall of the limiting groove, and a support rod is rotatably connected to the outer side of the shaft. The right end of the support rod on the adjacent side is rotatably connected to the top cover.

[0010] As a further improvement of this utility model, a sliding rod is slidably connected to the inner wall of the shaft, and the sliding rod is connected to the limiting groove through a positioning component.

[0011] As a further improvement of this utility model, the fixing component includes a buckle and a snap fastener. The buckle is rotatably connected to the top front side of the outer wall of the bottom shell, and the snap fastener is fixedly connected to the top side of the outer wall of the top cover. The buckle and the snap fastener are detachably connected.

[0012] As a further improvement of this utility model, the sliding component includes a fixed block and a spring. The fixed block is fixedly connected to the right side of the slider, and the spring is fixedly connected to the bottom of the slider. The fixed block is slidably connected to the inner wall of the limiting groove.

[0013] As a further improvement of this utility model, the positioning component includes a positioning block and a positioning hole. The positioning block is fixedly connected to one side of the slide rod and slidably connected to one end of the shaft. The positioning hole is opened at both ends of the rear side of the inner wall of the limiting groove. The positioning hole is detachably connected to the positioning block.

[0014] As a further improvement of this utility model, a spectrometer operation module is provided inside the bottom shell, and a spectrometer display module is provided inside the top cover.

[0015] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0016] 1. In this utility model, the light-blocking structure composed of a unique slot, slider, sliding component and connecting block can be conveniently installed to block sunlight in outdoor sunlight environment, without the need for staff to manually block the light, which solves the problem of existing devices lacking light-blocking structure and inconvenient data viewing, and greatly improves the convenience of detection.

[0017] 2. In this utility model, through the structure of fixing components, shafts, slides and positioning components, the device can be quickly and stably opened and fixed when testing soil organic pollutants outdoors, avoiding shaking during use. Compared with existing devices that lack opening and positioning fixing structures, this effectively improves the stability of the testing process and ensures the accuracy of the test data. Attached Figure Description

[0018] Figure 1 This is an isometric view of a portable gas chromatograph for rapid screening proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the through-slot structure of a portable gas chromatography device for rapid screening proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the limiting groove structure of a portable gas chromatography device for rapid screening proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the positioning block structure of a portable gas chromatography device for rapid screening proposed in this utility model.

[0022] Legend:

[0023] 1. Bottom shell; 2. Top cover; 3. Fixing assembly; 4. Limiting groove one; 5. Shaft; 6. Support rod; 7. Slide rod; 8. Positioning assembly; 9. Slot; 10. Connecting block; 11. Light blocking plate; 12. Through groove; 13. Slider; 14. Limiting groove two; 15. Sliding assembly; 301. Buckle; 302. Snap buckle; 801. Positioning block; 802. Positioning hole; 1501. Fixing block; 1502. Spring. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0025] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0029] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] Example 1: As Figures 1-4 As shown, a portable gas chromatograph for rapid screening includes a bottom shell 1, a top cover 2 rotatably connected to the rear end of the top of the bottom shell 1, a fixing component 3 connecting the front side of the outer wall of the bottom shell 1 to the top cover 2, slots 9 being provided on both the left and right ends of the front side of the top cover 2, sliders 13 being slidably connected to the inner wall of the slots 9, and limiting grooves 14 being provided on the top of both the left and right sides of the outer wall of the top cover 2, the limiting grooves 14 being connected to the sliders 13 via sliding components 15, a connecting block 10 being detachably connected to the inner wall of the slots 9, a through groove 12 being provided on the front side of the connecting block 10, and a light-blocking plate 11 being fixedly connected to the bottom front side of the connecting block 10.

[0031] Specifically, when testing for organic pollutants in soil outdoors, soil samples are first collected and placed in the device. The device uses heating or other methods to volatilize the organic pollutants into a gaseous state. Then, a carrier gas carries the gaseous organic pollutants into a chromatographic column for separation. Different organic pollutants have different retention times in the chromatographic column, thus achieving separation. The separated organic pollutants sequentially enter the detector, which converts them into electrical signals. By analyzing the electrical signals, the type and content of organic pollutants in the soil can be determined. Due to the glare of outdoor sunlight, the operator can insert the connecting block 10 into the slot 9. At this time, the spring 1502 in the sliding assembly 15 provides support for the slider 13, causing the slider 13 to cooperate with the fixing block 1501 on the inner wall of the limiting groove 14 to limit and stabilize the position of the connecting block 10. The light-blocking plate 11 can effectively block sunlight, preventing strong light from affecting the operator's data viewing. No manual shielding is required, improving the convenience of testing. At the same time, the detachable connecting block 10 can be removed when light blocking is not needed, without affecting the normal carrying and operation of the device.

[0032] Example 2: As Figures 1-4 As shown, limit grooves 4 are provided at the top of both the left and right sides of the outer wall of the bottom shell 1. A shaft 5 is slidably connected to the inner wall of the limit groove 4, and a support rod 6 is rotatably connected to the outer side of the shaft 5. The right end of the support rod 6 on the adjacent side is rotatably connected to the top cover 2. A sliding rod 7 is slidably connected to the inner wall of the shaft 5. The sliding rod 7 is connected to the limit groove 4 through a positioning component 8. The fixing component 3 includes a buckle 301 and a buckle 302. The buckle 301 is rotatably connected to the top of the front side of the outer wall of the bottom shell 1, and the buckle 302 is fixedly connected to the top side of the outer wall of the top cover 2. The buckle 301 and the buckle 302 are detachably connected. The sliding assembly 15 includes a fixing block 1501 and a spring 1502. The fixing block 1501 is fixedly connected to the right side of the slider 13, and the spring 1502 is fixedly connected to the bottom of the slider 13. The fixing block 1501 is slidably connected to the inner wall of the limiting groove 14. The positioning assembly 8 includes a positioning block 801 and a positioning hole 802. The positioning block 801 is fixedly connected to the side of the slide rod 7, and is slidably connected to the end of the shaft 5. The positioning hole 802 is opened at both the top and bottom ends of the rear side of the inner wall of the limiting groove 4, and the positioning hole 802 is detachably connected to the positioning block 801.

[0033] Specifically, when testing soil organic pollutants outdoors, the buckle 301 is released from the latch 302 when the device is opened. The top cover 2 is rotated, causing the support rod 6 to rotate around the shaft 5. At the same time, the slide rod 7 is slid, causing the positioning block 801 to engage in the positioning hole 802, thereby fixing the position of the shaft 5 and the slide rod 7. The support rod 6 stably supports the top cover 2, providing a reliable positioning and fixing structure for the device in the open state, preventing the device from shaking during use, ensuring the stability of the gas chromatography device during the detection process, and improving the accuracy of the detection data. Moreover, this structure is simple and easy to operate, and can quickly achieve stable support after the device is opened, making it convenient for staff to quickly carry out soil organic pollutant detection work outdoors.

[0034] Working principle: When testing soil organic pollutants outdoors, unfasten the buckle 301 on the front side of the bottom shell 1 and the buckle 302 on the top cover 2. Rotate the top cover 2 to drive the support rod 6 to rotate around the shaft 5. Slide the slide rod 7 so that the positioning block 801 is engaged in the positioning hole 802 on the inner wall of the limiting groove 14 to fix the position of the shaft 5 and the slide rod 7. The support rod 6 stably supports the top cover 2. When viewing the data, if the sunlight is glaring, insert the connecting block 10 into the slot 9 on the front side of the top cover 2. The spring 1502 in the sliding assembly 15 provides support for the slider 13, so that the slider 13 cooperates with the fixing block 1501 on the inner wall of the limiting groove 24 to limit and stabilize the connecting block 10. Its bottom light-blocking plate 11 blocks the sunlight, so there is no need to manually block the light. When not in use, the connecting block 10 can be removed without affecting the carrying operation.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A portable gas chromatograph for rapid screening, comprising a base (1), characterized in that: The bottom shell (1) is rotatably connected to the top rear end of the top cover (2). The front side of the outer wall of the bottom shell (1) is connected to the top cover (2) through a fixing component (3). The top cover (2) has slots (9) on both the left and right sides of the front side. The inner wall of the slot (9) is slidably connected to a slider (13). The top of the left and right sides of the outer wall of the top cover (2) has a second limiting groove (14). The second limiting groove (14) is connected to the slider (13) through a sliding component (15). The inner wall of the slot (9) is detachably connected to a connecting block (10). The front side of the connecting block (10) has a through groove (12). The bottom of the front side of the connecting block (10) is fixedly connected to a light-blocking plate (11).

2. The portable gas chromatograph for rapid screening according to claim 1, characterized in that: The bottom shell (1) has a limiting groove (4) on the top of the left and right sides of the outer wall. The inner wall of the limiting groove (4) is slidably connected to a shaft (5). The outer side of the shaft (5) is rotatably connected to a support rod (6). The right end of the support rod (6) on the side closest to it is rotatably connected to the top cover (2).

3. The portable gas chromatograph for rapid screening according to claim 2, characterized in that: The inner wall of the shaft (5) is slidably connected to a slide rod (7), and the slide rod (7) is connected to the limiting groove (4) through a positioning component (8).

4. The portable gas chromatograph for rapid screening according to claim 1, characterized in that: The fixing component (3) includes a buckle (301) and a buckle (302). The buckle (301) is rotatably connected to the top front side of the outer wall of the bottom shell (1), and the buckle (302) is fixedly connected to the top side of the outer wall of the top cover (2). The buckle (301) and the buckle (302) are detachably connected.

5. The portable gas chromatograph for rapid screening according to claim 1, characterized in that: The sliding assembly (15) includes a fixing block (1501) and a spring (1502). The fixing block (1501) is fixedly connected to the right side of the slider (13), and the spring (1502) is fixedly connected to the bottom of the slider (13). The fixing block (1501) is slidably connected to the inner wall of the limiting groove (14).

6. The portable gas chromatograph for rapid screening according to claim 3, characterized in that: The positioning component (8) includes a positioning block (801) and a positioning hole (802). The positioning block (801) is fixedly connected to the side of the slide rod (7). The positioning block (801) is slidably connected to the end of the shaft (5). The positioning hole (802) is opened at the top and bottom ends of the rear side of the inner wall of the limiting groove (4). The positioning hole (802) is detachably connected to the positioning block (801).

7. The portable gas chromatograph for rapid screening according to claim 1, characterized in that: The bottom shell (1) is equipped with a spectrometer operation module, and the top cover (2) is equipped with a spectrometer display module.

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