A sampling device for agricultural product testing

Abstract

The present invention provides a sampling device for agricultural product detection, comprising a bottom plate, pillars are fixed on the upper parts of both ends of the bottom plate, a top plate is fixed on the top of the pillars, a rotating shaft connected in rotation is arranged at the center of the top plate, a blade is horizontally fixed at the lower end of the rotating shaft, the blade is located below the top plate, a plurality of through holes evenly distributed along the center of the rotating shaft are opened on the top plate, the through holes are located in the rotation path of the blade, a base is also arranged on the upper end of the bottom plate, a plurality of transfer dishes aligned with the through holes are arranged on the upper end of the base, the transfer dishes are detachably connected to the base, the sampling device of the present invention collects samples of a plurality of agricultural products by rotating the blade, and the samples automatically fall into the transfer dishes, compared with the method of manually cutting samples with a blade, the efficiency is greatly improved, and the operation is simple and safe.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural product detection, and in particular to a sampling device for agricultural product detection. Background Art

[0002] The rapid development of agricultural industrialization has made the production of agricultural products increasingly dependent on exogenous substances such as pesticides, antibiotics and hormones. The use of pesticides in agricultural products in my country remains high, and the irrational use of these substances will inevitably lead to excessive pesticide residues in agricultural products, affecting consumers' food safety. In severe cases, it will cause consumers to become ill and have abnormal development. Excessive pesticide residues will also affect the trade of agricultural products. Countries around the world attach great importance to the problem of pesticide residues.

[0003] Enzyme inhibition method is one of the commonly used methods for pesticide detection. Its detection principle is to use the principle that organophosphorus and carbamate pesticides have an inhibitory effect on acetylcholinesterase in animals. Agricultural product sample extract (the sample contains water) is added to the coexistence system of acetylcholinesterase and its substrate. If the sample does not contain pesticides, the activity of the enzyme will not be inhibited, acetylcholine will be hydrolyzed by the enzyme, and the hydrolysis product will react with the added color developer to produce color. On the contrary, if it contains a certain amount of organophosphorus or carbamate pesticides, the activity of the enzyme will be inhibited, the substrate will not be hydrolyzed by the enzyme, and no color will be developed. The absorbance value is measured by a spectrophotometer to calculate the inhibition amount, and the situation of pesticide residues in the sample can be determined.

[0004] The laboratory receives multiple requests for agricultural product testing every day. Testers use a knife to cut off part of the skin from the surface of the agricultural product, place it in a reagent bottle, add various solutions to mix, and finally pour part of the solution into the cuvette of the pesticide residue detector for testing. The inventor found that testers need to sample a large number of agricultural products every day. Frequent use of a knife not only easily scratches the hands, but also has low sampling efficiency. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a sampling device for agricultural product detection to solve all or one of the problems mentioned in the above background technology.

[0006] Based on the above purpose, the present invention provides a sampling device for agricultural product detection, including a bottom plate, pillars are fixed on the upper parts of both ends of the bottom plate, a top plate is fixed on the top of the pillars, a rotating shaft for rotation is arranged at the center of the top plate, a blade is horizontally fixed at the lower end of the rotating shaft, the blade is located below the top plate, a plurality of through holes evenly distributed along the center of the rotating shaft are opened on the top plate, the through holes are located in the rotation path of the blade, a base is also arranged on the upper end of the bottom plate, a plurality of transfer dishes aligned with the through holes are arranged on the upper end of the base, and the transfer dishes are detachably connected to the base.

[0007] Optionally, the base is provided with a plurality of placement grooves aligned with the through holes in a vertical direction, and the transfer dish is embedded in the placement grooves.

[0008] Optionally, a positioning block is fixed to the bottom of the base, and a positioning groove cooperating with the positioning block is formed on the upper end of the bottom plate.

[0009] Optionally, a sliding tube is vertically penetrated through the bottom of the transfer dish, a lower cover plate is fixed to the lower end of the sliding tube, the upper end of the sliding tube extends to the interior of the transfer dish and is fixed with an upper cover plate, a gap is left between the upper cover plate and the inner wall of the transfer dish, a spring is sleeved on the outer wall of the sliding tube, the spring is located between the lower cover plate and the bottom of the transfer dish, the spring presses the upper cover plate onto the inner bottom end of the transfer dish, a liquid outlet hole is opened on the upper end side of the sliding tube, and a liquid outlet bucket connected to the sliding tube is fixed to the bottom of the sliding tube.

[0010] Optionally, an annular sealing ring is bonded to the lower surface of the upper cover plate.

[0011] Optionally, a plurality of material stripping blocks are fixed to the bottom surface of the top plate, and the material stripping blocks are arranged one by one on the side of the through hole facing the rotation direction of the blade. The material stripping block is a C-shaped structure, and the middle opening of the material stripping block is used to avoid the rotating blade.

[0012] Optionally, a binding strap is provided at the upper end of the through hole, and both ends of the binding strap are fixed to the upper end of the top plate.

[0013] Optionally, two ends of the bottom plate are provided with insertion holes, and the two pillars are inserted into the insertion holes.

[0014] From the above description, it can be seen that the sampling device of the present invention collects samples of multiple agricultural products by rotating the blade, and the samples automatically fall into the transfer dish. Compared with the method of manually cutting the samples with a blade, the efficiency is greatly improved, and the operation is simple and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate one or more embodiments of the present specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only one or more embodiments of the present specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of the sampling device of the present invention;

[0017] Figure 2 It is a schematic structural diagram of the transfer dish of the present invention;

[0018] Figure 3It is a schematic diagram of a transfer dish transferring a solution of the present invention;

[0019] Figure 4 is a bottom view schematic diagram of the top plate of the present invention;

[0020] Figure 5 is a schematic top view of a top plate of the present invention;

[0021] Figure 6 is a schematic top view of the base plate of the present invention;

[0022] Figure 7 It is a top view schematic diagram of the base of the present invention.

[0023] Among them, 1. bottom plate; 2. top plate; 3. through hole; 4. binding belt; 5. rotating shaft; 6. blade; 7. transfer dish; 8. material return block; 9. placement groove; 10. base; 11. positioning block; 12. positioning groove; 13. pillar; 14. upper cover plate; 15. sealing ring; 16. liquid outlet; 17. spring; 18. sliding tube; 19. lower cover plate; 20. liquid outlet bucket; 21. socket. DETAILED DESCRIPTION

[0024] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in conjunction with specific embodiments.

[0025] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of this specification should be understood by people with ordinary skills in the field to which this disclosure belongs. The "first", "second" and similar words used in one or more embodiments of this specification do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] One or more embodiments of the present specification disclose a sampling device for agricultural product detection, comprising a bottom plate 1, pillars 13 are fixed to the upper parts of both ends of the bottom plate 1, a top plate 2 is fixed to the top of the pillars 13, a rotating shaft 5 is provided at the center of the top plate 2, a blade 6 is horizontally fixed to the lower end of the rotating shaft 5, the blade 6 is located below the top plate 2, a plurality of through holes 3 evenly distributed along the center of the rotating shaft 5 are opened on the top plate 2, the through holes 3 are located in the rotation path of the blade 6, a base 10 is also provided at the upper end of the bottom plate 1, a plurality of transfer dishes 7 aligned with the through holes 3 are provided at the upper end of the base 10, and the transfer dishes 7 are detachably connected to the base 10.

[0027] like Figure 1-7 As shown, the sampling device includes a bottom plate 1, and pillars 13 are arranged at both ends of the bottom plate 1. The pillars 13 can be arranged on the bottom plate 1 by bolt connection or welding. A top plate 2 is fixed on the top of the pillars 13, and a rotating shaft 5 is arranged at the center of the top plate 2 for rotation. A blade 6 is fixed at the lower end of the rotating shaft 5. The blade 6 is arranged horizontally and is located below the top plate 2. A plurality of through holes 3 are opened on the top plate 2, and the through holes 3 are evenly distributed along the center of the rotating shaft 5. The through holes 3 are located in the rotation path of the blade 6. A base 10 is also arranged at the upper end of the bottom plate 1, and a plurality of transfer dishes 7 are arranged on the base 10. The transfer dishes 7 are aligned with the through holes 3 one by one, and the transfer dishes 7 and the base 10 are detachably connected.

[0028] The working principle of the device is as follows: the agricultural products to be tested are placed one by one in the through hole 3. The surface of the agricultural products is usually a curved surface, such as apples, pears, peppers, pumpkins and other agricultural products. The agricultural products are placed on the upper end of the through hole 3. A small part of the agricultural products passes through the through hole 3 to the bottom thereof. Then the rotating shaft 5 is rotated to make the blade 6 rotate one circle. The blade 6 is located below the top plate 2. After the blade 6 rotates one circle, the part of the agricultural product extending below the through hole 3 is cut off. The cut part falls into the transfer dish 7 below the through hole 3, thereby completing the simultaneous sampling of multiple agricultural products. The sampled samples directly fall into the transfer dish 7. The sampling process is very simple, efficient, safe and reliable.

[0029] The sampling device of the present invention collects samples of multiple agricultural products by rotating the blade 6, and the samples automatically fall into the transfer dish 7. Compared with the method of manually cutting the samples with the blade 6, the efficiency is greatly improved, and the operation is simple and safe.

[0030] In some optional embodiments, the base 10 is provided with a plurality of placement grooves 9 aligned with the through hole 3 in an upper and lower direction, and the transfer dish 7 is embedded in the placement grooves 9. The placement grooves 9 are used to store the transfer dish 7 and also align the transfer dish 7 with the through hole 3.

[0031] In some optional embodiments, a positioning block 11 is fixed to the bottom of the base 10, and a positioning groove 12 cooperating with the positioning block 11 is opened at the upper end of the bottom plate 1. The base 10 and the bottom plate 1 are detachably connected and can be taken out from the bottom plate 1 as a whole, which is convenient for operation. By inserting the positioning block 11 into the positioning groove 12, the transfer dish 7 and the through hole 3 can be accurately aligned, so that the cut sample can fall directly into the transfer dish 7.

[0032] In some optional embodiments, a sliding tube 18 is vertically penetrated through the bottom of the transfer dish 7, a lower cover plate 19 is fixed to the lower end of the sliding tube 18, the upper end of the sliding tube 18 extends to the interior of the transfer dish 7 and is fixed with an upper cover plate 14, a gap is left between the upper cover plate 14 and the inner wall of the transfer dish 7, a spring 17 is sleeved on the outer wall of the sliding tube 18, the spring 17 is located between the lower cover plate 19 and the bottom of the transfer dish 7, the spring 17 presses the upper cover plate 14 against the inner bottom end of the transfer dish 7, a liquid outlet 16 is opened on the upper end side of the sliding tube 18, and a liquid outlet bucket 20 connected to the sliding tube 18 is fixed to the bottom of the sliding tube 18.

[0033] like Figure 2 and 3 As shown, after the sample falls into the transfer dish 7, the inspector needs to add various solutions into the transfer dish 7, and then pour part of the solution in the transfer dish 7 into the cuvette of the pesticide residue detector. The detection principle of the pesticide residue detector is the enzyme inhibition principle and the photoelectric colorimetry principle. Therefore, the sample cannot be poured into the cuvette, otherwise it will affect the detection result. When the spring 17 is not subjected to external force, the upper cover plate 14 is supported on the bottom of the transfer dish 7, and the solution in the transfer dish 7 cannot enter the slide tube 18. When it is necessary to transfer part of the solution in the transfer dish 7 to the cuvette, as shown in FIG. Figure 3 As shown, the liquid outlet hopper 20 is inserted into the cuvette, the lower cover 19 is held against the upper edge of the cuvette, and then the transfer dish 7 is pressed down, the spring 17 is compressed, and the upper cover 14 rises from the bottom of the transfer dish 7. As the transfer dish 7 descends, the liquid outlet hole 16 on the upper side of the slide tube 18 is connected with the inside of the transfer dish 7, and the solution inside the transfer dish 7 enters the liquid outlet hole 16 from the gap between the upper cover 14 and the inner wall of the transfer dish 7, and then enters the slide tube 18 from the liquid outlet hole 16, and finally enters the cuvette from the liquid outlet hopper 20, while the cut agricultural product skin is left in the transfer dish 7. In the traditional method, the inspector needs to align the transfer dish 7 with the cuvette and pour the solution into it, and at the same time, it is necessary to prevent the skin part from entering the cuvette. The cuvette and the transfer dish 7 are small in size and are more troublesome to operate. The transfer dish 7 only needs to insert the liquid outlet hopper 20 into the cuvette, and then press the transfer dish 7 down to achieve the separate transfer of the solution part, which is simpler and more efficient in operation.

[0034] In some optional embodiments, an annular sealing ring 15 is bonded to the lower surface of the upper cover plate 14 to ensure that the upper cover plate 14 and the bottom of the transfer dish 7 are sufficiently sealed to prevent the solution from leaking when the solution is added into the transfer dish 7.

[0035] In some optional embodiments, a plurality of material stripping blocks 8 are fixed to the bottom surface of the top plate 2, and the material stripping blocks 8 are arranged one by one on the side of the through hole 3 facing the rotation direction of the blade 6. The material stripping block 8 is a C-shaped structure, and the middle opening of the material stripping block 8 is used to avoid the rotating blade 6.

[0036] The blade 6 cuts off the portion of the agricultural product extending out of the through hole 3 when rotating. In order to prevent the blade 6 from continuing to rotate with the cut portion, a stripping block 8 is provided on the rotating path of the blade 6. The blade 6 rotates out from the middle opening of the stripping block 8, and the cut sample separates from the blade 6 after hitting the lower end of the stripping block 8, ensuring that the sample can accurately fall into the transfer dish 7 below it.

[0037] In some optional embodiments, a strap 4 is provided at the upper end of the through hole 3, and both ends of the strap 4 are fixed to the upper end of the top plate 2. When the agricultural products are placed on the upper end of the through hole 3, the strap 4 is used to temporarily fix the agricultural products so that the agricultural products remain stationary, ensuring that the blade 6 can smoothly cut the sample.

[0038] In some optional embodiments, the bottom plate 1 is provided with insertion holes 21 at both ends, and the two pillars 13 are inserted into the insertion holes 21, so that the top plate 2 and the bottom plate 1 are detachably connected to facilitate cleaning or maintenance.

[0039] The above is a description of a specific embodiment of the specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0040] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. In line with the present disclosure, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present specification as described above, which are not provided in detail for the sake of simplicity.

[0041] In addition, to simplify the description and discussion, and in order not to obscure one or more embodiments of the present specification, known power / ground connections to integrated circuit (IC) chips and other components may or may not be shown in the provided figures. In addition, the device may be shown in the form of a block diagram so as to avoid obscuring one or more embodiments of the present specification, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform on which one or more embodiments of the present specification will be implemented (i.e., these details should be fully within the scope of understanding of those skilled in the art). Where specific details (e.g., circuits) are set forth to describe exemplary embodiments of the present disclosure, it is apparent to those skilled in the art that one or more embodiments of the present specification may be implemented without these specific details or with variations in these specific details. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0042] Although the present disclosure has been described in conjunction with specific embodiments of the present disclosure, many replacements, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

[0043] One or more embodiments of this specification are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this specification should be included in the scope of protection of this disclosure.

Claims

1. A sampling device for agricultural product detection, characterized in that: The invention comprises a bottom plate (1), pillars (13) are fixed at the upper parts of both ends of the bottom plate (1), a top plate (2) is fixed at the top of the pillars (13), a rotating shaft (5) is arranged at the center of the top plate (2), a blade (6) is horizontally fixed at the lower end of the rotating shaft (5), the blade (6) is located below the top plate (2), a plurality of through holes (3) evenly distributed along the center of the rotating shaft (5) are opened on the top plate (2), the through holes (3) are located in the rotation path of the blade (6), a base (10) is further arranged at the upper end of the bottom plate (1), a plurality of transfer plates (7) aligned with the through holes (3) are arranged at the upper end of the base (10), and the transfer plates (7) are detachably connected to the base (10); The base (10) is provided with a plurality of placement grooves (9) aligned vertically with the through holes (3), and the transfer dish (7) is embedded in the placement grooves (9); A positioning block (11) is fixed to the bottom of the base (10), and a positioning groove (12) cooperating with the positioning block (11) is formed at the upper end of the bottom plate (1); A slide tube (18) is vertically passed through the bottom of the transfer dish (7), a lower cover plate (19) is fixed to the lower end of the slide tube (18), an upper end of the slide tube (18) extends to the interior of the transfer dish (7) and is fixed to an upper cover plate (14), a gap is left between the upper cover plate (14) and the inner wall of the transfer dish (7), a spring (17) is sleeved on the outer wall of the slide tube (18), the spring (17) is located between the lower cover plate (19) and the bottom of the transfer dish (7), the spring (17) causes the upper cover plate (14) to be pressed against the inner bottom end of the transfer dish (7), a liquid outlet hole (16) is opened on the side surface of the upper end of the slide tube (18), and a liquid outlet hopper (20) connected to the slide tube (18) is fixed to the bottom of the slide tube (18); An annular sealing ring (15) is bonded to the lower surface of the upper cover plate (14).

2. The sampling device for agricultural product detection according to claim 1, characterized in that: A plurality of material stripping blocks (8) are fixed to the bottom surface of the top plate (2), and the material stripping blocks (8) are arranged one by one on the side of the through hole (3) facing the rotation direction of the blade (6). The material stripping blocks (8) are C-shaped structures, and the middle opening of the material stripping blocks (8) is used to avoid the rotating blade (6).

3. The sampling device for agricultural product detection according to claim 1, characterized in that: A binding belt (4) is provided at the upper end of the through hole (3), and two ends of the binding belt (4) are fixed to the upper end of the top plate (2).

4. The sampling device for agricultural product detection according to claim 1, characterized in that: Insertion holes (21) are provided at both ends of the bottom plate (1), and the two pillars (13) are inserted into the insertion holes (21).

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