Food pesticide residue detection device

Abstract

The utility model provides a food pesticide residue detection device, which belongs to the technical field of food detection and comprises a box body, a plurality of groups of extraction components are connected onto the inner wall of the box body, weep pipes are arranged at the tops of the extraction components, the tops of the weep pipes penetrate through the top of the box body to be connected with a water tank, and first control valves are arranged on the weep pipes; a culture dish is arranged at the bottom of the extraction assembly and detachably connected to the bottom of the box body. According to the utility model, through the obliquely arranged storage table and the hammering head, food liquid can overflow from the baffle plate to flow into the filter screen for secondary filtration through dripping water after being hammered into pieces, and finally flows into the culture dish for detection, so that the direct contact between the food and the filter screen is avoided, and large food in the overflowing food liquid is less; and the probability of blocking the filter screen is also greatly reduced.

Description

Technical Field

[0001] This utility model belongs to the field of food testing technology, specifically relating to a food pesticide residue testing device. Background Technology

[0002] Food safety is closely related to the vital interests of the general public and has always been one of the important tasks of relevant regulatory agencies at all levels of the country. This has placed higher demands on the rapid detection of pesticide residues, and the demand for products that can rapidly detect pesticide residues is also increasing.

[0003] There are many methods for detecting pesticide residues, which can be broadly categorized into two types based on their principles: biochemical assays and chromatographic assays. Among these, the enzyme inhibition rate method, a type of biochemical assay, is listed as a national recommended standard method (GB / T 5009.199-2003) due to its advantages of speed, sensitivity, ease of operation, and low cost. It has become one of the mainstream technologies for rapid on-site qualitative screening of organophosphorus and carbamate pesticide residues in fruits and vegetables, and its application is becoming increasingly widespread.

[0004] Enzyme inhibition methods are based on the insect toxicology principle that organophosphates and carbamate pesticides inhibit the activity of acetylcholine in the central and peripheral nervous systems of insects, leading to the accumulation of the neurotransmitter acetylcholine, affecting normal nerve conduction, and causing insect poisoning and death. According to this principle, a specific inhibitor of cholinesterase (ChE) is reacted with the sample extract, i.e., the food liquid. If ChE is inhibited, it indicates that the sample extract contains organophosphates or carbamate pesticides. Therefore, a sample extract is essential for detection. For example, a pesticide residue detector with application number 201520086159.X, although capable of testing food liquids, still has the following shortcomings:

[0005] 1. Food residue can easily clog the filter, causing the device to work slowly or even become unusable.

[0006] 2. Only one experiment can be conducted at a time, resulting in low experimental efficiency. Utility Model Content

[0007] To address the problems existing in the prior art, a food pesticide residue detection device is proposed.

[0008] The technical solution to the technical problem solved by this utility model is as follows: a food pesticide residue detection device, including a box body, several sets of extraction components connected to the inner wall of the box body, a drip pipe provided at the top of the extraction components, the top of the drip pipe passing through the top of the box body and connected to a water tank, and a first control valve provided on the drip pipe; a culture dish provided at the bottom of the extraction components, and the culture dish being detachably connected to the bottom of the box body.

[0009] Preferably, the extraction component includes a hammering platform, which is inclined, with a hammer head vertically slidably connected to the platform, and a hydraulic rod connected to the top of the hammer head, which is fixed to the top of the chamber. Baffles are provided at both ends and the lower side of the hammering platform, and a filter screen is provided on the higher side wall of the platform. The filter screen is located on the upper part of the petri dish.

[0010] Preferably, the width of the hammer head is smaller than the width of the hammering table, the hammer head divides the hammering table into a storage section and a hammering section, and the drip pipe is located at the top of the storage section.

[0011] Preferably, the tilt angle of the hammer head is the same as that of the hammering table, so that the hammer head can fit tightly against the hammering table when it is lowered to its lowest position.

[0012] Preferably, the filter screen is provided with vertical plates around its perimeter to form a liquid storage space, and a vertical tube is connected to the bottom of the filter screen. A second control valve is provided on the vertical tube, and the vertical tube introduces the test liquid into the culture dish.

[0013] Preferably, a limiting groove is connected to the inner wall of the bottom of the box, and a limiting block is connected to the bottom of the culture dish, and the limiting block can slide within the limiting groove.

[0014] Compared with existing technologies, the above technical solution has the following advantages or beneficial effects:

[0015] 1. This utility model, through the inclined placement platform and hammer head, can crush food and then allow the food liquid to overflow the baffle and flow into the filter screen for secondary filtration by dripping water, and finally flow into the petri dish for testing. This avoids direct contact between the food and the filter screen, and the overflowing food liquid contains fewer large pieces of food, which greatly reduces the probability of clogging the filter screen.

[0016] 2. By setting up multiple sets of extraction components, this utility model can perform multiple sets of experiments at once. Whether it is to conduct multiple tests on the same food to reduce errors or to test different foods at the same time, it can speed up the detection speed and improve efficiency. Attached Figure Description

[0017] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a front view of the present invention.

[0020] Figure 3 yes Figure 2 The sectional view at point A in the diagram.

[0021] Figure 4This is a structural diagram of the extracted components.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Box body; 2. Water tank; 3. Extraction assembly; 31. Hydraulic rod; 32. Hammer head; 33. Baffle; 34. Storage part; 35. Hammering part; 36. Filter screen; 37. Vertical pipe; 38. Hammering platform; 39. Vertical plate; 310. Second control valve; 4. Petri dish; 5. Limiting groove; 6. Limiting block; 7. Drip pipe; 8. First control valve. Detailed Implementation

[0024] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and / or letters in different examples. This repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that the components illustrated in the drawings are not necessarily drawn to scale. The present invention omits descriptions of well-known components and processing techniques and processes to avoid unnecessarily limiting the present invention. The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Please see Figures 1-4To address the difficulties in extracting food raw liquid during food testing and the problem that food raw liquid easily clogs the filter screen 36, this embodiment provides a food pesticide residue testing device, including a housing 1. Several sets of extraction components 3 are connected to the inner wall of the housing 1. A drip pipe 7 is provided at the top of the extraction component 3. The top of the drip pipe 7 passes through the top of the housing 1 and is connected to a water tank 2. A first control valve 8 is provided on the drip pipe 7. A culture dish 4 is provided at the bottom of the extraction component 3. The culture dish 4 is detachably connected to the bottom of the housing 1.

[0026] In this embodiment, the extraction component 3 includes a hammering platform 38, which is tilted. The hammering head 32 has the same tilt angle as the hammering platform 38, and the hammering head 32 can fit tightly against the hammering platform 38 when it is lowered to its lowest position. This arrangement can maximize the compression of food when hammering it. The hammering head 32 is vertically slidably connected to the hammering platform 38, and a hydraulic rod 31 is connected to the top of the hammering head 32. The hydraulic rod 31 is fixed to the top of the box 1. Baffles 33 are provided at both ends and the lower side of the hammering platform 38, which can collect the food on the hammering platform 38 after hammering. Water droplets are then dripped on it, making it easier for the food to stay on the hammering platform 38. The food liquid fills the platform as the water flow increases, and finally flows out along the side wall of the hammering platform 38 into the filter screen 36. The filter screen 36 is provided on the high side wall of the hammering platform 38. The filter screen 36 is located on the upper part of the petri dish 4. The width of the hammer head 32 is smaller than the width of the hammering platform 38. The hammer head 32 divides the hammering platform 38 into a placement section 34 and a hammering section 35. The drip pipe 7 is located at the top of the placement section 34. When the device is not in operation, food can be placed in the placement section 34. At this time, the hammer head 32 is in contact with the hammering section 35. When the hydraulic rod 31 is activated, the hammer head 32 rises, and the food can then flow into the hammering section 35, preventing injury from the hammer head 32 when placing food. Vertical plates 39 are provided around the filter screen 36 to form a liquid storage space. The bottom of the filter screen 36 is connected to a vertical pipe 37, and a second control valve 310 is provided on the vertical pipe 37. The vertical pipe 37 introduces the detection liquid into the petri dish 4.

[0027] A limiting groove 5 is connected to the inner wall of the bottom of the box 1, and a limiting block 6 is connected to the bottom of the culture dish 4. The limiting block 6 can slide in the limiting groove 5. After the food liquid is dropped into the culture dish 4, the culture dish 4 can be removed along the sliding groove and placed in an environment with suitable temperature and humidity for cultivation. At the same time, a new culture dish 4 can be placed in for new food liquid collection, thereby improving the detection efficiency.

[0028] Working principle:

[0029] First, the petri dish 4 is pushed into the limiting groove 5 and stopped at the lower part of the extraction component 3. Then, the food is placed in the placement part 34 of the hammering platform 38. The hydraulic rod 31 is activated, causing the hammer head 32 to lift, and the food flows into the hammering part 35. The hydraulic rod 31 reciprocates multiple times, causing the hammer head 32 to continuously hammer the food. After hammering, the first control valve 8 is opened, allowing water to flow into the sealed space formed by the hammering platform 38 and the baffle 33. The water accumulates and eventually overflows, flowing into the liquid storage space formed by the filter screen 36 and the vertical plate 39. The second control valve 310 is then opened, allowing the food liquid to flow into the petri dish 4 for testing. Although the specific embodiments of the utility model have been described above in conjunction with the accompanying drawings, this is not a limitation on the scope of protection of this utility model. Based on the technical solution of this utility model, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of this utility model.

Claims

1. A food pesticide residue detection device, characterized in that: Includes a box body (1), with several sets of extraction components (3) connected to the inner wall of the box body (1), and a drip pipe (7) on the top of the extraction component (3), the top of the drip pipe (7) passing through the top of the box body (1) and connecting to a water tank (2), and a first control valve (8) on the drip pipe (7); a petri dish (4) is provided at the bottom of the extraction component (3), and the petri dish (4) is detachably connected to the bottom of the box body (1).

2. The food pesticide residue detection device according to claim 1, characterized in that: The extraction component (3) includes a hammering platform (38), which is inclined and has a hammer head (32) vertically slidably connected on it. The top of the hammer head (32) is connected to a hydraulic rod (31), which is fixed to the top of the box (1). Baffles (33) are provided at both ends and the lower side of the hammering platform (38), and a filter screen (36) is provided on the high side wall of the hammering platform (38). The filter screen (36) is located on the upper part of the petri dish (4).

3. The food pesticide residue detection device according to claim 2, characterized in that: The width of the hammer head (32) is smaller than the width of the hammering table (38). The hammer head (32) divides the hammering table (38) into a storage section (34) and a hammering section (35). The drip pipe (7) is located on top of the storage section (34).

4. The food pesticide residue detection device according to claim 3, characterized in that: The tilt angle of the hammer head (32) is the same as that of the hammer table (38), and the hammer head (32) can fit tightly against the hammer table (38) when it is lowered to its lowest position.

5. The food pesticide residue detection device according to claim 2, characterized in that: The filter screen (36) is surrounded by vertical plates (39) to form a liquid storage space. The bottom of the filter screen (36) is connected to a vertical tube (37). A second control valve (310) is provided on the vertical tube (37). The vertical tube (37) introduces the detection liquid into the petri dish (4).

6. The food pesticide residue detection device according to claim 1, characterized in that: The bottom inner wall of the box (1) is connected to the limiting groove (5), and the bottom of the petri dish (4) is connected to the limiting block (6). The limiting block (6) can slide in the limiting groove (5).

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