A portable pretreatment box for gas chromatographic determination of residual amount of insecticide in soil

Abstract

The utility model discloses a portable pretreatment box of insecticide double residual quantity gas chromatographic determination in soil belongs to gas chromatographic determination technical field. This kind of portable pretreatment box of insecticide double residual quantity gas chromatographic determination in soil, including main part, grinding mechanism and screening mechanism, the main part includes the box, and the upper end one side of box is hinged with the apron through a pair of hinge, the grinding mechanism includes the base, and the bottom of base is connected with the inside bottom end one side of box, and the upper end of base is provided with the clamping groove, and the inside clamping groove is connected with the grinding disc, the screening mechanism includes the screening box, and the bottom of screening box is connected with the inside bottom end other side of box, and the upper end of screening box is movably inserted with the screening box, and the bottom side of screening box is slidably inserted with the collection box, the utility model discloses can effectively improve the accuracy of insecticide double residual quantity gas chromatographic determination in soil, has higher practical value.

Description

Technical Field

[0001] This utility model relates to the field of gas chromatography determination technology, specifically a portable pretreatment box for gas chromatography determination of dual insecticide residues in soil. Background Technology

[0002] In the field of soil environmental monitoring, accurately measuring the residue levels of pesticides in soil is of great significance for ensuring the safety of agricultural products and the health of the ecological environment.

[0003] Based on the above, the inventors have discovered the following problems: existing pretreatment equipment is bulky and cannot meet the needs of rapid on-site sample preparation; the stability of pesticide residues in soil is poor, and they are easily lost due to factors such as microbial decomposition and photo-oxidation during storage and transportation after collection. If soil samples are not pretreated in a timely manner, the residue levels will decrease significantly over time, seriously affecting the judgment of the true situation of pesticide residues in the soil.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a portable pretreatment box for the gas chromatography determination of dual residues of insecticides in soil, in order to achieve a more practical purpose. Utility Model Content

[0005] The purpose of this invention is to provide a portable pretreatment box for the gas chromatography determination of dual residues of insecticides in soil, in order to solve the problem mentioned in the background art that the existing pretreatment equipment is bulky and cannot meet the needs of rapid on-site sample preparation.

[0006] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0007] A portable pretreatment box for gas chromatography determination of dual residues of insecticides in soil includes a main body, a grinding mechanism, and a sieving mechanism. The main body includes a box body, with a cover plate hinged to one side of the upper end of the box body via a pair of hinges. The grinding mechanism includes a base, the bottom end of which is connected to one side of the inner bottom end of the box body. A slot is provided at the upper end of the base, and a grinding disc is engaged inside the slot. The sieving mechanism includes a sieving box, the bottom end of which is connected to the other side of the inner bottom end of the box body. A sieving container is movably inserted into the upper end of the sieving box, and a collection box is slidably inserted into the bottom side of the sieving box.

[0008] Furthermore, an electric telescopic rod is fixedly installed on one side of the base, and a crossbar is fixedly installed on the upper side of the electric telescopic rod.

[0009] The beneficial effect of adopting the above-mentioned further solution is that the height of the electric telescopic rod can be adjusted to move the grinding rod closer to or away from the grinding disc, adapting to the grinding needs of different amounts of soil samples and improving operational flexibility.

[0010] Furthermore, a grinding rod is rotatably connected to the bottom side of the crossbar, and a servo motor is embedded in the top of the crossbar, with the output end of the servo motor being connected to the grinding rod in a transmission manner.

[0011] The beneficial effect of adopting the above-mentioned further solution is that the servo motor drives the grinding rod to rotate at high speed, grinding and breaking the soil sample in the slot, improving the sample pretreatment efficiency, ensuring uniform sample particles, and facilitating subsequent screening.

[0012] Furthermore, support plates are fixedly installed on both sides of the inside of the screening box, spring rods are fixedly installed on both sides of the upper end of the support plates, a connecting frame is fixedly installed between the top ends of the two pairs of spring rods, and a vibration motor is fixedly installed on both sides of the bottom end of the connecting frame.

[0013] The beneficial effects of adopting the above-mentioned further solution are that the vibrating motor drives the screening box to vibrate through the connecting frame, the spring rod provides elastic support to cooperate with the vibrating motor, improves the screening effect of the screening box, and the support plate ensures the stable installation of the vibration mechanism.

[0014] Furthermore, the four corners of the upper end of the screening box are movably fitted with fixing bolts, and the bottom ends of the fixing bolts are threadedly connected to the connecting frame.

[0015] The advantages of adopting the above-mentioned further solution are that the fixing bolts fix the screening box to the connecting frame, ensuring that the screening box will not shift or fall off during vibration, while facilitating disassembly and cleaning, and ensuring the reliability and hygiene requirements of the pretreatment process.

[0016] Furthermore, baffles are fixedly installed on both sides of the bottom of the screening box, and the opposing surfaces of the pair of baffles abut against the sides of the screening box and the collection box, respectively.

[0017] The beneficial effect of adopting the above-mentioned further solution is that the baffle limits the sliding range of the sieving box and the collection box, prevents them from deviating from their positions during vibration or extraction, ensures that the sieving soil particles fall accurately into the collection box, and avoids sample loss.

[0018] Furthermore, a pair of movable seats are fixedly installed on both sides of the upper end of the cover plate, and each pair of movable seats is rotatably connected to a support frame through a damping shaft.

[0019] The beneficial effect of adopting the above-mentioned further solution is that the support frame is connected to the movable seat through the damping pivot, which can adjust the angle and keep it fixed, supporting the cover plate as a temporary operating table, making it convenient for operators to place tools or record data, and improving the convenience of on-site operations.

[0020] Furthermore, the cover plate has buckles on both sides of its bottom end, and the box body has locking blocks installed at both ends, with the locking blocks engaging with the buckles.

[0021] The advantage of adopting the above-mentioned further solution is that the snap-fit ​​and the locking block ensure that the cover is tightly closed, making it convenient for users to carry and transfer the case.

[0022] Furthermore, a mounting base is fixedly installed at one end of the box, and a telescopic rod is rotatably connected inside the mounting base via a damping pivot. Universal wheels are fixedly installed at the four corners of the bottom of the box.

[0023] The advantages of adopting the above-mentioned further solutions are that the telescopic rod and casters make the pretreatment box easy to move and adapt to the portability needs of soil sampling points; the damping pivot ensures that the rod can be locked at any angle, making it convenient to push or stand for operation.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows: The portable pretreatment box for the gas chromatography determination of dual residues of insecticides in soil provides a pretreatment operation space in the main body of the box. The cover is sealed by a snap-fit ​​and a locking block to protect the grinding and sieving mechanisms and prevent damage during transport. The grinding disc of the grinding mechanism engages with the slot to facilitate the user to remove the ground soil from the base. The sieving box and collection box of the sieving mechanism work together to sieve the ground soil and collect it using the collection box. The user can easily pour the sieved soil sample from the collection box into a sample tube for sealed storage, meeting the pretreatment requirements of gas chromatography determination. The servo motor drives the grinding rod to rotate at high speed to grind and break the soil sample in the slot, improving the sample pretreatment efficiency, ensuring uniform sample particles, and facilitating subsequent sieving. The baffle limits the sliding range of the sieving box and collection box to prevent them from deviating from their positions during vibration or extraction, ensuring that the sieved soil particles fall accurately into the collection box and avoiding sample loss. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the portable pretreatment box for gas chromatography determination of dual insecticide residues in soil, as disclosed in an embodiment of this utility model. Figure 1 ;

[0026] Figure 2 This is a three-dimensional structural diagram of the portable pretreatment box for gas chromatography determination of dual insecticide residues in soil, as disclosed in an embodiment of this utility model. Figure 2 ;

[0027] Figure 3 This is a three-dimensional structural diagram of the grinding mechanism of the portable pretreatment box for gas chromatography determination of dual insecticide residues in soil disclosed in this utility model embodiment.

[0028] Figure 4 This is a three-dimensional structural diagram of the sieving mechanism of the portable pretreatment box for gas chromatography determination of dual insecticide residues in soil disclosed in this utility model embodiment.

[0029] Figure 5 This is a three-dimensional structural diagram of the grinding mechanism of the portable pretreatment box for gas chromatography determination of dual insecticide residues in soil, as disclosed in an embodiment of this utility model.

[0030] In the diagram: 1. Main body; 101. Box; 102. Locking block; 103. Casters; 104. Cover plate; 105. Movable seat; 106. Support frame; 107. Buckle; 2. Telescopic rod; 3. Grinding mechanism; 301. Base; 302. Slot; 303. Grinding disc; 304. Electric telescopic rod; 305. Crossbar; 306. Grinding rod; 307. Servo motor; 4. Screening mechanism; 401. Screening box; 402. Support plate; 403. Spring rod; 404. Connecting frame; 405. Vibration motor; 406. Screening box; 407. Baffle; 408. Collection box. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0032] Please see Figures 1-5 This utility model provides a technical solution: a portable pretreatment box for gas chromatography determination of dual residues of insecticides in soil, comprising a main body 1, a grinding mechanism 3, and a sieving mechanism 4. The main body 1 includes a box body 101, and a cover plate 104 is hinged to one side of the upper end of the box body 101 by a pair of hinges. The grinding mechanism 3 includes a base 301, the bottom end of which is connected to one side of the inner bottom end of the box body 101. A slot 302 is provided at the upper end of the base 301, and a grinding disc 303 is engaged inside the slot 302. The sieving mechanism 4 includes a sieving box 401, the bottom end of which is connected to the other side of the inner bottom end of the box body 101. A sieving box 406 is movably inserted into the upper end of the sieving box 401, and a collection box 408 is slidably inserted into the bottom side of the sieving box 401.

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0034] Please see Figures 1-5An electric telescopic rod 304 is fixedly installed on one side of the base 301. A crossbar 305 is fixedly installed on one side of the upper end of the electric telescopic rod 304. A grinding rod 306 is rotatably connected to the bottom side of the crossbar 305. A servo motor 307 is embedded in the top of the crossbar 305. The output end of the servo motor 307 is connected to the grinding rod 306 for transmission. Support plates 402 are fixedly installed on both sides of the interior of the screening box 401. Spring rods 403 are fixedly installed on both sides of the upper end of the support plates 402. A connecting frame 404 is fixedly installed between the top ends of the two pairs of spring rods 403. Vibration motors 405 are fixedly installed on both sides of the bottom end of the connecting frame 404. Fixing bolts are movably inserted into the four corners of the upper end of the screening box 406, and the bottom ends of the fixing bolts are threaded to the connecting frame 404. Baffles 407 are fixedly installed on both sides of the bottom end of the interior of the screening box 401. The opposing surfaces of a pair of baffles 407 abut against the sides of the screening box 406 and the collection box 408, respectively.

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0036] Please see Figures 1-5 A pair of movable seats 105 are fixedly installed on both sides of the upper end of the cover plate 104. Each pair of movable seats 105 is rotatably connected to the support frame 106 through a damping shaft. Buckles 107 are provided on both sides of the bottom end of the cover plate 104. Locking blocks 102 are installed at both ends of the box body 101. The locking blocks 102 are locked to the buckles 107. A mounting base is fixedly installed at one end of the box body 101. The telescopic pull rod 2 is rotatably connected to the inside of the mounting base through a damping shaft. Universal wheels 103 are fixedly installed at the four corners of the bottom end of the box body 101.

[0037] Specifically, the working principle of the portable pretreatment box for the gas chromatography determination of dual residues of insecticides in soil is as follows: In use, firstly, the box body 101 is moved to the sampling point using the telescopic rod 2 and the casters 103. Then, the latch 107 and the locking block 102 are engaged, and the cover 104 is opened. The support frame 106 is unfolded using the movable seat 105 and the damping shaft, supporting the cover 104 as a temporary operating table. Next, the collected soil is placed into the grinding disc 303. The electric telescopic rod 304 is activated to adjust the height of the crossbar 305, bringing the grinding rod 306 close to the sample. The servo motor 307 drives the grinding rod 306 to rotate at high speed, grinding and breaking up the soil. After grinding, the electric telescopic rod 304 lifts the grinding rod 306, and the user moves the grinding disc 303... 03. Remove the sample from the slot 302 and pour the ground sample into the sieve box 406. Fix the sieve box 406 to the connecting frame 404 with the fixing bolts. The vibration motor 405 drives the sieve box 406 to vibrate and sieve through the spring rod 403. Particles that meet the particle size requirements fall into the collection box 408 below. The baffle 407 ensures that the positions of the sieve box 406 and the collection box 408 are stable. After sieving, remove the collection box 408, transfer the soil sample to the test tube and seal it to complete the pretreatment process. After the operation is completed, turn off the vibration motor 405 and the servo motor 307, disassemble the sieve box 406 for cleaning, retract the support frame 106, fasten the cover plate 104 and lock the buckle 107, and transfer the equipment through the telescopic pull rod 2 and the universal wheel 103.

[0038] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Furthermore, since this application is mainly used to protect mechanical devices, this application will not explain the control method and circuit connection in detail.

Claims

1. A portable pretreatment kit for gas chromatography determination of dual residues of insecticides in soil, characterized in that, The system includes a main body (1), a grinding mechanism (3), and a sieving mechanism (4). The main body (1) includes a box (101), and a cover plate (104) is hinged to one side of the upper end of the box (101) by a pair of hinges. The grinding mechanism (3) includes a base (301), the bottom end of which is connected to one side of the inner bottom end of the box (101). A slot (302) is provided at the upper end of the base (301), and a grinding disc (303) is engaged inside the slot (302). The sieving mechanism (4) includes a sieving box (401), the bottom end of which is connected to the other side of the inner bottom end of the box (101). A sieving box (406) is movably inserted into the upper end of the sieving box (401), and a collection box (408) is slidably inserted into the bottom side of the sieving box (401).

2. The portable pretreatment box for gas chromatography determination of dual residues of insecticides in soil according to claim 1, characterized in that, An electric telescopic rod (304) is fixedly installed on one side of the base (301), and a crossbar (305) is fixedly installed on one side of the upper end of the electric telescopic rod (304).

3. The portable pretreatment box for gas chromatography determination of dual residues of insecticides in soil according to claim 2, characterized in that, A grinding rod (306) is rotatably connected to the bottom side of the crossbar (305), and a servo motor (307) is embedded in the top of the crossbar (305). The output end of the servo motor (307) is connected to the grinding rod (306) for transmission.

4. The portable pretreatment box for gas chromatography determination of dual residues of insecticides in soil according to claim 1, characterized in that, The screening box (401) has a support plate (402) fixedly installed on both sides inside. The upper ends of the support plate (402) are fixedly installed on both sides. A connecting frame (404) is fixedly installed between the top ends of the two pairs of spring rods (403). A vibration motor (405) is fixedly installed on both sides of the bottom end of the connecting frame (404).

5. The portable pretreatment box for gas chromatography determination of dual residues of insecticides in soil according to claim 4, characterized in that, The four corners of the upper end of the screening box (406) are movably fitted with fixing bolts, and the bottom ends of the fixing bolts are threadedly connected to the connecting frame (404).

6. The portable pretreatment box for gas chromatography determination of dual residues of insecticides in soil according to claim 5, characterized in that, Both sides of the bottom of the screening box (401) are fixedly installed with baffles (407), and the opposing surfaces of the pair of baffles (407) abut against the sides of the screening box (406) and the collection box (408), respectively.

7. The portable pretreatment box for gas chromatography determination of dual residues of insecticides in soil according to claim 1, characterized in that, A pair of movable seats (105) are fixedly installed on both sides of the upper end of the cover plate (104), and each pair of movable seats (105) is rotatably connected to the support frame (106) through a damping shaft.

8. The portable pretreatment box for gas chromatography determination of dual residues of insecticides in soil according to claim 1, characterized in that, Both sides of the bottom end of the cover plate (104) are provided with buckles (107), and both ends of the box body (101) are equipped with locking blocks (102), and the locking blocks (102) are engaged with the buckles (107).

9. The portable pretreatment box for gas chromatography determination of dual residues of insecticides in soil according to claim 1, characterized in that, A mounting base is fixedly installed at one end of the housing (101), and a telescopic rod (2) is rotatably connected inside the mounting base through a damping shaft. Universal wheels (103) are fixedly installed at the four corners of the bottom end of the housing (101).

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