Nuts pesticide residue gas chromatography micro detection cabin

Abstract

The utility model relates to pesticide residue detection technical field, concretely is nut pesticide residue gas chromatogram micro detection cabin, including the micro gas chromatograph body of setting in the base, the base top hinged has a pair of side covers, and the base includes base and adjusting seat, and the base is equipped with a plurality of support columns, and the four corners of adjusting seat top surface all are screw -threaded connection screw -threaded resistance pole, and the four corners of adjusting seat top surface all are embedded with level bubble. The nut pesticide residue gas chromatogram micro detection cabin, through setting level bubble parallel with the edge on the adjusting seat top surface, can directly show the equipment level state, so that adjusting screw -threaded resistance pole can be independent fine adjustment adjusting seat each corner height, realizes horizontal calibration, and the support column of base four all around can adjust the overall support height with handle bolt, adjusts the temporary detection platform of different flatness, ensures that the equipment is always in the horizontal working state when the temporary detection in the field, reduces the detection error caused by the inclination.

Description

Technical Field

[0001] This utility model relates to the field of pesticide residue detection technology, specifically to a gas chromatography micro-detection chamber for pesticide residues in nuts. Background Technology

[0002] Gas chromatography (GC) for pesticide residue detection in nuts is a method for precise analysis of pesticide residues in nuts using GC technology. With its high separation efficiency, GC can separate multiple pesticide residues in the nut matrix. Combined with appropriate detectors, it can achieve qualitative and quantitative analysis of trace pesticides, providing a scientific basis for the safety of nut consumption.

[0003] Utility model patent CN220932875U discloses a miniature gas chromatograph, which includes a support base, a gas chromatograph body and a sealed shell fitted onto the gas chromatograph body at the top of the support base, the support base being composed of a bottom support plate and an adjustable shock-absorbing support plate, the adjustable shock-absorbing support plate being connected to the top of the bottom support plate by several airbags and several limiting springs, one side of the top of the adjustable shock-absorbing support plate being provided with a limiting component one matching the gas chromatograph body, and the other side of the top of the adjustable shock-absorbing support plate being provided with a limiting component two matching the gas chromatograph body; this miniature gas chromatograph can improve the overall protection performance and prevent damage to the miniature gas chromatograph.

[0004] When performing temporary on-site testing, this miniature gas chromatograph, although its support base includes a bottom support plate and an adjustable shock-absorbing support plate, does not have a dedicated leveling structure. It only achieves shock absorption and fit by inflating and deflating airbags, which cannot accurately level the instrument for tilted surfaces. Furthermore, on uneven temporary testing surfaces, the tilt of the equipment can easily lead to deviations in the test data. In view of this, we propose a miniature gas chromatographic detection chamber for pesticide residues in nuts. Utility Model Content

[0005] The purpose of this invention is to provide a micro gas chromatographic detection chamber for pesticide residues in nuts, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A micro gas chromatographic detection chamber for pesticide residues in nuts includes a micro gas chromatograph body. The bottom of the micro gas chromatograph body is fitted onto a base. Side covers are hinged to the left and right edges of the top of the base. When the two side covers are closed, the chamber space formed by the two side covers and the base encloses the micro gas chromatograph body.

[0008] The base includes a base at the bottom and an adjustment seat for supporting the micro gas chromatograph body. The top of the base has a cavity, and the adjustment seat extends into the cavity. A boss is fixed at each of the four corners of the base, and a support column is inserted into each boss. A shank bolt is threaded onto the external of the boss, and the end of the shank bolt abuts against the support column. Threaded rods are threaded to the four corners of the top surface of the adjustment seat, and the bottom end of each threaded rod penetrates the adjustment seat and abuts against the bottom of the cavity. A horizontal bubble is embedded at each of the four edges of the top surface of the adjustment seat, and the horizontal bubble is parallel to the corresponding edge of the adjustment seat.

[0009] Preferably, the support column extends vertically through the protrusion, the support column and the protrusion are detachably connected, and the bottom end of the support column is pointed.

[0010] In this setup, the support column can be flexibly adjusted to extend to adapt to different ground surfaces, the detachable design makes it easy to store, and the sharp bottom end enhances stability on soft ground.

[0011] Preferably, a plurality of anti-detachment plates are provided at the edges of the left and right sides of the cavity, and a plurality of limiting grooves corresponding to the positions of the anti-detachment plates are provided at the edges of the left and right sides of the top surface of the adjusting seat, and the anti-detachment plates extend into the top groove of the limiting grooves;

[0012] In this configuration, the anti-detachment plate works in conjunction with the limiting groove to restrict the vertical displacement of the adjusting seat and prevent it from detaching from the cavity.

[0013] Preferably, a plurality of first magnets are embedded at the bottom of the cavity, and a plurality of second magnets corresponding to the positions of the first magnets are embedded on the bottom surface of the adjusting seat, wherein the polarity of the top end of the first magnet is the same as the polarity of the bottom end of the second magnet.

[0014] In this setting, like magnetic poles repel each other, reducing direct friction between the adjustment seat and the bottom of the cavity, thus providing a buffer for horizontal adjustment.

[0015] Preferably, the top of the threaded abutment is provided with a handle, and the outer surface of the handle is provided with anti-slip texture;

[0016] In this setting, the handle has an increased operating contact area, and the anti-slip texture reduces hand slippage, making it easier to accurately adjust the height of the threaded push rod.

[0017] Preferably, the tops of the two side covers are locked together by a snap fastener, and a handle is fixed to the top of each side cover;

[0018] In this design, the buckle ensures the side cover closes securely, and the handle makes it easy to carry the entire device, improving portability.

[0019] Preferably, a stop block is fixed to the top inner wall of the side cover. The stop block is made of EVA foam. When the two side covers are closed together, the stop block abuts against the top of the micro gas chromatograph body.

[0020] In this setup, the EVA foam pads provide flexible support for the miniature gas chromatograph, reducing shaking during movement.

[0021] Preferably, a plurality of storage sleeves are fixed on the top surface of the side cover. The cross-section of the storage sleeve is U-shaped. When the support column is not in use, the support column is inserted into the storage sleeve.

[0022] In this setup, the U-shaped storage sleeve can properly store unused support columns, preventing them from being lost and keeping the device tidy.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] 1. This micro gas chromatographic detection chamber for pesticide residues in nuts can visually display the horizontal status of the equipment by setting a level bubble parallel to the edge on the top surface of the adjustment seat. The height of each corner of the adjustment seat can be independently fine-tuned by abutting the threaded rods at the four corners of the adjustment seat against the bottom of the base cavity, so as to achieve horizontal calibration.

[0025] 2. This micro gas chromatographic detection chamber for pesticide residues in nuts can be adjusted in overall height by means of support columns around the base and bolts with handles, adapting to temporary testing surfaces with different flatness, ensuring that the equipment is always in a horizontal working state during temporary on-site testing, and reducing detection errors caused by tilting. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the overall structural state of the side cover when it is unfolded in this utility model;

[0028] Figure 3 This is an exploded view of the base in this utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the adjusting seat in this utility model;

[0030] Figure 5 This is a schematic diagram of the bottom structure of the adjusting seat in this utility model;

[0031] Figure 6 This is a schematic diagram of the side cover structure in this utility model;

[0032] The meanings of the labels in the diagram are as follows:

[0033] 100. Miniature gas chromatograph body;

[0034] 200. Base; 210. Base plate; 211. Cavity; 2111. Anti-detachment plate; 2112. First magnet; 212. Plug; 2121. Bolt with handle; 213. Support column; 220. Adjusting seat; 221. Sleeve cavity; 222. Threaded push rod; 2221. Handle; 223. Level bubble; 224. Limiting groove; 225. Second magnet;

[0035] 300. Side cover; 310. Handle; 320. Support block; 330. Storage sleeve. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] Please see Figures 1-6 A miniature gas chromatographic detection chamber for pesticide residues in nuts includes a miniature gas chromatograph body 100. The bottom of the miniature gas chromatograph body 100 is fitted onto a base 200. An adjusting seat 220 has a cavity 221, into which the bottom end of the miniature gas chromatograph body 100 extends, thus confining the miniature gas chromatograph body 100 to the adjusting seat 220. Side covers 300 are hinged to the left and right edges of the top of the base 200. When the two side covers 300 are closed, the chamber space formed by the two side covers 300 and the base 200 encloses the miniature gas chromatograph body 100. The combined structure of the side covers 300 and the base 200 provides physical protection for the miniature gas chromatograph body 100, reducing the impact of dust and moisture from the external environment on the equipment.

[0038] like Figure 1 , Figure 2 and Figure 6 As shown, in this invention, the tops of the two side covers 300 are locked together by a snap fastener. The snap fastener structure ensures the stability of the side covers 300 after they are closed, preventing accidental opening of the side covers 300 during the testing process. A handle 310 is fixed to the top of the side cover 300, which facilitates the operator in carrying the entire device and improves the ease of movement of the equipment. A stop block 320 is fixed to the inner wall of the top of the side cover 300. The stop block 320 is made of EVA foam. When the two side covers 300 are closed, the stop block 320 abuts against the top of the micro gas chromatograph body 100. The EVA foam stop block 320 can flexibly fix the micro gas chromatograph body 100 after the side covers 300 are closed, reducing the shaking of the equipment during movement.

[0039] like Figures 1-3 As shown, specifically, the base 200 includes a base 210 at the bottom and an adjustment seat 220 for supporting the micro gas chromatograph body 100. Bosses 212 are fixed at all four corners of the base 210, and support columns 213 are inserted into the bosses 212. The bosses 212 provide a mounting carrier for the support columns 213, achieving vertical positioning of the support columns 213. A shank bolt 2121 is externally threaded onto the bosses 212. The end of the shank bolt 2121 abuts against the support column 213, and the shank bolt 2121 can fix the position of the support column 213 through a tightening action, preventing axial movement of the support column 213 during use. The support column 213 vertically penetrates the bosses 212, and the support column 213 and bosses 212 are detachably connected. This detachable design facilitates the replacement and storage of the support column 213. The bottom end of the support column 213 is pointed, which enhances the grip of the support column 213 on soft ground and improves the stability of the equipment placement.

[0040] like Figure 1 , Figure 2 and Figure 6 As shown, further, a number of storage sleeves 330 are fixed on the top surface of the side cover 300. The cross-section of the storage sleeve 330 is U-shaped. When the support column 213 is not in use, the support column 213 is inserted into the storage sleeve 330. The storage sleeve 330 can store the idle support column 213 to prevent the support column 213 from being lost, while maintaining the overall cleanliness of the equipment.

[0041] like Figures 3-5 As shown, the base 210 has a recessed cavity 211 at its top, into which the adjusting seat 220 extends. The recessed cavity 211 provides installation space for the adjusting seat 220 and limits its horizontal movement. Each of the four corners of the top surface of the adjusting seat 220 is threaded with a threaded abutment 222. The bottom end of the threaded abutment 222 penetrates the adjusting seat 220 and abuts against the bottom of the recessed cavity 211. By rotating the threaded abutment 222, the height of the corresponding corner of the adjusting seat 220 can be changed, thus achieving horizontal calibration of the adjusting seat 220. The top of the threaded abutment 222 has a handle 2221. Anti-slip textures are formed on the outer surface of the handle 2221. The handle 2221 increases the contact area between the hand and the threaded abutment 222, and the anti-slip textures reduce slippage during rotation, making it easier for the operator to apply force. A level bubble 223 is embedded around the four edges of the top surface of the adjustment seat 220. The level bubble 223 is parallel to the edge of the adjustment seat 220 at the corresponding position. The level bubble 223 can intuitively display the horizontal status of the adjustment seat 220 and provide a reference for the operator to calibrate the level.

[0042] like Figure 3 and Figure 4As shown, it is worth noting that several anti-detachment plates 2111 are provided at the edges of the left and right sides of the cavity 211. Several limiting grooves 224 corresponding to the positions of the anti-detachment plates 2111 are provided at the edges of the left and right sides of the top surface of the adjusting seat 220. The anti-detachment plates 2111 extend into the top groove of the limiting groove 224. The cooperation between the anti-detachment plates 2111 and the limiting grooves 224 can prevent the adjusting seat 220 from detaching from the cavity 211, thereby enhancing the stability of the connection between the adjusting seat 220 and the base 210.

[0043] like Figure 3 and Figure 5 As shown, it is worth noting that a number of first magnets 2112 are embedded at the bottom of the cavity 211, and a number of second magnets 225 corresponding to the positions of the first magnets 2112 are embedded on the bottom surface of the adjustment seat 220. The polarity of the top of the first magnet 2112 is the same as the polarity of the bottom of the second magnet 225. The repulsive force between the like magnetic poles can reduce the direct contact wear between the bottom surface of the adjustment seat 220 and the bottom of the cavity 211, and at the same time provide a certain buffer space for the horizontal adjustment of the adjustment seat 220.

[0044] In this embodiment, the nut pesticide residue gas chromatography miniature detection chamber is used as follows: First, the support column 213 is removed from the storage sleeve 330, inserted into the protrusion 212, and fixed with the bolt 2121. The extension length of the support column 213 is adjusted according to the conditions of the work surface to make the base 210 roughly stable. Then, the level bubble 223 on the adjusting seat 220 is observed, and the threaded abutment 222 in the corresponding position is rotated until the level bubble 223 shows that the adjusting seat 220 is in a horizontal state. Next, the miniature gas chromatograph body 100 is placed on the adjusting seat 220, and the two side covers 300 are closed and locked with buckles. At this time, the abutment 320 abuts against the top of the miniature gas chromatograph body 100, completing the fixation of the equipment. Finally, the detection operation of nut pesticide residues is performed. After the detection is completed, the side cover 300 is opened to take out the equipment, the support column 213 is removed and inserted into the storage sleeve 330 for easy carrying and storage later.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A micro gas chromatographic detection chamber for pesticide residues in nuts, comprising a micro gas chromatograph body (100), characterized in that: The bottom of the miniature gas chromatograph body (100) is fitted onto the base (200). Side covers (300) are hinged to the left and right edges of the top of the base (200). When the two side covers (300) are closed together, the chamber space formed by the two side covers (300) and the base (200) encloses the miniature gas chromatograph body (100). The base (200) includes a base (210) at the bottom and an adjustment seat (220) for supporting the micro gas chromatograph body (100). A cavity (211) is formed at the top of the base (210), and the adjustment seat (220) extends into the cavity (211). Thrusts (212) are fixed at all four corners of the base (210). Support columns (213) are inserted into the thrusts (212), and bolts with handles (213) are threaded onto the external surfaces of the thrusts (212). 121), the end of the shank bolt (2121) abuts against the support column (213), and the four corners of the top surface of the adjusting seat (220) are threaded with threaded abutment rods (222). The bottom end of the threaded abutment rod (222) passes through the adjusting seat (220) and abuts against the bottom of the cavity (211). A horizontal bubble (223) is embedded at the four edges of the top surface of the adjusting seat (220). The horizontal bubble (223) is parallel to the edge of the adjusting seat (220) at the corresponding position.

2. The micro gas chromatographic detection chamber for pesticide residues in nuts according to claim 1, characterized in that: The support column (213) extends vertically through the boss (212), and the support column (213) and the boss (212) are detachably connected. The bottom end of the support column (213) is sharp.

3. The micro gas chromatographic detection chamber for pesticide residues in nuts according to claim 1, characterized in that: Several anti-detachment plates (2111) are provided at the left and right sides of the cavity (211). Several limiting grooves (224) corresponding to the positions of the anti-detachment plates (2111) are provided at the left and right sides of the top surface of the adjusting seat (220). The anti-detachment plates (2111) extend into the top groove of the limiting grooves (224).

4. The micro gas chromatographic detection chamber for pesticide residues in nuts according to claim 1, characterized in that: The bottom of the cavity (211) is provided with a number of first magnets (2112), and the bottom surface of the adjustment seat (220) is provided with a number of second magnets (225) corresponding to the positions of the first magnets (2112). The polarity of the top of the first magnet (2112) is the same as the polarity of the bottom of the second magnet (225).

5. The micro gas chromatographic detection chamber for pesticide residues in nuts according to claim 1, characterized in that: The top of the threaded push rod (222) is provided with a handle (2221), and the outer surface of the handle (2221) is provided with anti-slip texture.

6. The micro gas chromatographic detection chamber for pesticide residues in nuts according to claim 1, characterized in that: The tops of the two side covers (300) are locked together by a snap fastener, and a handle (310) is fixed to the top of the side cover (300).

7. The micro gas chromatographic detection chamber for pesticide residues in nuts according to claim 1, characterized in that: A stop block (320) is fixed to the top inner wall of the side cover (300). The stop block (320) is made of EVA foam. When the two side covers (300) are closed together, the stop block (320) abuts against the top of the micro gas chromatograph body (100).

8. The micro gas chromatographic detection chamber for pesticide residues in nuts according to claim 1, characterized in that: The top surface of the side cover (300) is fixed with a number of storage sleeves (330). The cross-section of the storage sleeve (330) is U-shaped. When the support column (213) is not in use, the support column (213) is inserted into the storage sleeve (330).

Images