A pesticide residue detection sampling device

Abstract

The utility model relates to the field of pesticide residue detection equipment, concretely to a pesticide residue detection sampling device. Its including sample storage frame, place subassembly and sampling subassembly, sample storage frame top detachable setting has the closure, and the closure and sample storage frame inner chamber all are provided with heat insulating pad, place subassembly including placing the rack on sample storage frame, the uniform setting multiple storage tubes on the rack, the uniform setting multiple temperature guide components on multiple storage tubes, setting the suction component on the rack, and setting one clamping component on multiple storage tubes, storage tube has the water absorption groove, and with water absorption groove along annular communication multiple negative pressure groove, and the syringe and sample cutting knife of clamping on the fixed plate. The utility model through the rack cooperation suction component will liquid suction to multiple negative pressure groove inside, and cooperate temperature guide component and make test tube be in the environment of low temperature cold storage.

Description

Technical Field

[0001] This utility model relates to the field of pesticide residue detection equipment, and in particular to a pesticide residue detection sampling device. Background Technology

[0002] Pesticide residues are the phenomenon where some pesticides remain directly or indirectly in grains, vegetables, fruits, livestock products, aquatic products, soil, and water bodies after pesticides are applied in agricultural production. Pesticide residues are very harmful to humans and organisms. Therefore, before processing sweet potatoes, workers need to randomly sample sweet potatoes for pesticide residue testing.

[0003] Chinese Patent No. CN220663306U discloses a sampling device for pesticide residue detection, including a box body with a lid hinged to the top. The lid has a snap fastener. A handle and a locking ball are located on the side of the box body, engaging with the snap fastener. The box body has a first partition dividing it into two cavities. A second partition is located inside one of the cavities, and a placement plate and a support plate are located inside the cavity of the second partition. This sampling device for pesticide residue detection, through the coordinated use of the box body, lid, snap fastener, locking ball, first partition, second partition, sliding plate, slide rail, support plate, and placement plate, allows the sampler to be placed on one side of the first partition, and the sample storage tube to be placed inside a through hole in the support plate. The sliding plate can be adjusted as needed, and other necessary items can be placed between the sliding plates, facilitating the carrying of the sampling device and improving ease of use.

[0004] However, the above technical solution has the following shortcomings: sweet potato sampling often involves randomly taking multiple samples, and after sampling, it is necessary to refrigerate them in time to avoid changes in the sampling results caused by high temperature. However, the equipment cannot refrigerate the sampling results, which may lead to subsequent testing results that do not match the actual results. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a pesticide residue detection sampling device that uses a placement rack in conjunction with a suction assembly to draw liquid into multiple negative pressure tanks, and uses a temperature-conducting assembly to keep the test tubes in a low-temperature refrigeration environment.

[0006] The technical solution of this utility model is a sampling device for pesticide residue detection, comprising: a sample storage rack with a detachable sealing cover at its top, and heat insulation pads on both the sealing cover and the sample storage rack; a placement assembly, comprising a placement rack placed on the sample storage rack, a plurality of collection tubes evenly arranged on the placement rack, a plurality of temperature-conducting components evenly arranged on the plurality of collection tubes, a suction assembly arranged on the placement rack, and a clamping assembly arranged on each of the plurality of collection tubes; the collection tubes have a water absorption groove and a plurality of negative pressure grooves connected to the water absorption grooves in a ring; the plurality of negative pressure grooves are all connected to the placement rack, the plurality of temperature-conducting components are distributed one-to-one at the plurality of negative pressure grooves, and the suction assembly is connected to the plurality of negative pressure grooves; and a sampling assembly, comprising a fixing plate placed on the placement rack, and a syringe and a sample cutter clamped to the fixing plate.

[0007] Preferably, the sealed cover is provided with a display and a temperature sensor that are electrically connected to each other.

[0008] Preferably, the sample storage rack has two handles that are rotatably arranged on each other, and a roller that is rotatably arranged on each of the two handles.

[0009] Preferably, the clamping assembly includes a plurality of clamping plates arranged circumferentially from top to bottom on the storage tube, and a spring a arranged between the storage tube and each of the plurality of clamping plates.

[0010] Preferably, the temperature-conducting component includes a mounting bracket disposed on the receiving tube, and a plurality of temperature-conducting plates evenly disposed on the mounting bracket.

[0011] Preferably, the suction assembly includes a limiting frame disposed on the placement frame, a suction tube connected to the placement frame, a sealing plate slidably disposed on the limiting frame and the suction tube, and a spring b with its two ends respectively abutting against the sealing plate and the placement frame.

[0012] Preferably, the suction tube has multiple side slots evenly distributed along the ring.

[0013] Compared with the prior art, the present invention has the following beneficial technical effects:

[0014] In use, the sample cutter cuts the sample and places it in a test tube, then shakes it well. The liquid is then transferred to another test tube using a syringe for testing. Simultaneously, ice and liquid are poured between the sample storage rack and the placement rack. A suction assembly draws the liquid into a negative pressure chamber. Multiple temperature-conducting components contact the liquid to transfer temperature, ensuring the test tubes are kept cold and improving testing accuracy. A temperature sensor detects the temperature of the device and displays it in real time on a monitor. Both the sensor and the monitor are battery-powered. During transport, the user holds the rollers, forming a triangular structure for enhanced stability. The test tubes are secured by clamping plates and springs, and the temperature-conducting plate is made of copper to transfer cold air. The syringe works in conjunction with the limiting frame, connecting to the negative pressure chamber via a suction tube, allowing gas to flow within the placement rack. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0016] Figure 2 This is a cross-sectional view of an embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of the structure for placing the components in an embodiment of this utility model;

[0018] Figure 4 This is a schematic diagram of the suction component in an embodiment of the present invention.

[0019] Reference numerals: 1. Sample rack; 2. Sealing cover; 3. Handle frame; 4. Roller; 5. Heat insulation pad; 6. Guardrail; 7. Placement assembly; 71. Placement rack; 72. Collection tube; 721. Water suction tank; 722. Negative pressure tank; 73. Clamping plate; 74. Spring; 75. Suction assembly; 751. Limiting frame; 752. Suction tube; 753. Sealing plate; 754. Spring; 76. Mounting frame; 77. Temperature guiding plate; 8. Fixing plate; 9. Display; 10. Water outlet pipe. Detailed Implementation

[0020] Example 1

[0021] like Figures 1-4 As shown, this embodiment proposes a pesticide residue detection sampling device, including a sample storage rack 1, a placement component 7, and a sampling component. The top of the sample storage rack 1 is detachably equipped with a sealing cover 2. Both the sealing cover 2 and the inner cavity of the sample storage rack 1 are equipped with heat insulation pads 5. A water outlet pipe 10 is also connected to the sample storage rack 1, and a sealing cap is threaded onto the water outlet pipe 10. The water outlet pipe 10 is made of polyethylene wax material. The placement component 7 includes a placement rack 71 placed above the sample storage rack 1 and the heat insulation pads 5, and multiple sampling components evenly arranged on the placement rack 71. The system includes a collection tube 72, multiple temperature-conducting components evenly arranged on the multiple collection tubes 72, a suction component 75 arranged on the placement rack 71, and a clamping component arranged on each of the multiple collection tubes 72; the collection tube 72 has a water-absorbing groove 721 and multiple negative pressure grooves 722 that are connected to the water-absorbing groove 721 in a ring; the multiple negative pressure grooves 722 are all connected to the placement rack 71, the multiple temperature-conducting components are distributed one-to-one at the multiple negative pressure grooves 722, and the suction component 75 is connected to the multiple negative pressure grooves 722.

[0022] The sampling assembly includes a fixing plate 8 placed on the placement rack 71, and a syringe and a cutting knife snapped onto the fixing plate 8. After the ice inside the device melts, the user can remove the fixing plate 8 to place ice inside. The ice will then be restricted from moving by the guardrail 6 set on the placement rack 71, thereby preventing the ice from pushing the storage tube 72 to bend.

[0023] In this embodiment, the user opens the sealing cap 2, cuts the sample into a size large enough to fit inside the test tube using a sample cutter, places the sample and test liquid inside the test tube and shakes it. The user then injects the liquid into another test tube using a syringe, ready for testing. Simultaneously, the user pours ice and liquid between the sample storage rack 1 and the placement rack 71, and uses the syringe to draw the liquid into the negative pressure tank 722 through the suction component 75. Multiple temperature-conducting components are in contact with the liquid, thereby transferring temperature to the test tube, thus keeping the test tube in a low-temperature refrigerated state and improving the detection accuracy of pesticide residues.

[0024] Example 2

[0025] like Figure 1 As shown, this embodiment of the pesticide residue detection sampling device, compared to Embodiment 1, has an electrically connected display 9 and temperature sensor on the sealing cover 2. Two handles 3 are rotatably mounted on the sample storage rack 1, and a roller 4 is rotatably mounted on each of the two handles.

[0026] In this embodiment, the user can detect the internal temperature of the device through the temperature sensor and send the temperature to the display 9 for real-time display. Both the sensor and the display 9 are powered by batteries. When the user is moving the device, the user can hold the two rollers 4 at the same time so that the two handles 3 and the sample rack 1 cooperate to form a triangle, thereby improving the stability of the device during handling and preventing the device from shaking randomly.

[0027] Example 3

[0028] like Figures 1-3 As shown, this embodiment of the pesticide residue detection sampling device, compared to Embodiment 1, includes a clamping assembly comprising multiple clamping plates 73 arranged circumferentially from top to bottom on a receiving tube 72, and a spring a74 disposed between the receiving tube 72 and each of the multiple clamping plates 73. The temperature conducting assembly includes a mounting bracket 76 disposed on the receiving tube 72, and multiple temperature conducting plates 77 evenly disposed on the mounting bracket 76.

[0029] In this embodiment, a test tube is inserted between multiple clamping plates 73, and multiple springs a74 push the multiple clamping plates 73 to abut against the test tube, thereby fixing multiple points from top to bottom. The temperature-conducting plate 77 is set as a copper plate, so that the cold air in the water flows through the copper plate to the test tube.

[0030] Example 4

[0031] like Figures 1-4As shown, this embodiment of the pesticide residue detection sampling device, compared to Embodiment 1, includes a suction assembly 75 comprising a limiting frame 751 mounted on a placement frame 71, a suction tube 752 connected to the placement frame 71, a sealing plate 753 slidably mounted on the limiting frame 751 and the suction tube 752, and springs b754 whose two ends respectively abut against the sealing plate 753 and the placement frame 71. The suction tube 752 has multiple side slots evenly distributed along a ring.

[0032] When using this utility model, the user inserts the syringe into the limiting frame 751, and the syringe moves with the pushing sealing plate 753. The user uses the syringe to draw gas from the negative pressure groove 722 into the syringe, and the gas pushes the water flow to fill the negative pressure groove 722. The interconnection between the multiple negative pressure grooves 722 and the suction tube 752 can be achieved by splitting the placement frame 71 in the middle, with the upper part connected to the suction tube 752 and the lower part connected to the multiple negative pressure grooves 722. The connecting surface of the upper and lower parts is provided with a connecting groove for the user to communicate with, thereby realizing the flow of gas inside the placement frame 71.

[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A pesticide residue detection and sampling device, characterized in that, include: The sample storage rack (1) has a detachable cover (2) at its top, and both the cover (2) and the sample storage rack (1) are equipped with heat insulation pads (5). The placement component (7) includes a placement rack (71) placed on a sample storage rack (1), a plurality of collection tubes (72) evenly arranged on the placement rack (71), a plurality of temperature-conducting components evenly arranged on the plurality of collection tubes (72), a suction component (75) arranged on the placement rack (71), and a clamping component arranged on each of the plurality of collection tubes (72); the collection tubes (72) have a water absorption groove (721) and a plurality of negative pressure grooves (722) connected to the water absorption grooves (721) in a ring; the plurality of negative pressure grooves (722) are all connected to the placement rack (71), the plurality of temperature-conducting components are distributed one-to-one at the plurality of negative pressure grooves (722), and the suction component (75) is connected to the plurality of negative pressure grooves (722); The sampling assembly includes a fixing plate (8) placed on a placement rack (71), and a syringe and a cutting knife snapped onto the fixing plate (8).

2. The pesticide residue detection and sampling device according to claim 1, characterized in that, The closed cover (2) is equipped with a display (9) and a temperature sensor that are electrically connected to each other.

3. The pesticide residue detection and sampling device according to claim 1, characterized in that, The sample storage rack (1) is provided with two handles (3) that rotate relative to each other, and a roller (4) is provided on each of the two handles.

4. The pesticide residue detection and sampling device according to claim 1, characterized in that, The clamping assembly includes multiple clamping plates (73) arranged in a ring from top to bottom on the receiving tube (72), and a spring a (74) arranged between the receiving tube (72) and the multiple clamping plates (73).

5. The pesticide residue detection and sampling device according to claim 4, characterized in that, The temperature-conducting assembly includes a mounting bracket (76) disposed on the receiving tube (72) and a plurality of temperature-conducting plates (77) evenly disposed on the mounting bracket (76).

6. The pesticide residue detection and sampling device according to claim 1, characterized in that, The suction assembly (75) includes a limiting frame (751) disposed on the placement frame (71), a suction tube (752) connected to the placement frame (71), a sealing plate (753) slidably disposed on the limiting frame (751) and the suction tube (752), and a spring b (754) with its two ends abutting against the sealing plate (753) and the placement frame (71) respectively.

7. The pesticide residue detection and sampling device according to claim 6, characterized in that, The suction tube (752) has multiple side slots evenly distributed along the ring.

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