A portable detector for heavy metal content in agricultural products

Abstract

The utility model discloses a portable detector for heavy metal content of agricultural products, including detector body, is set up with the window on the detector body, the window top is provided with the cover of size matching, the inside installation of detector body has the light source and light source detector, the inside of detector body is placed with the colorimetric cup, the colorimetric cup is centrally arranged between the light source and light source detector. A kind of portable detector for heavy metal content of agricultural products of the utility model, in the process of detecting heavy metal content of agricultural products, through the cooperation of installation component, driving assembly, rotating assembly and knocking component, not only make the impurities suspended in sample solution surface in colorimetric cup settle, improve the precision of heavy metal content detection result, also eliminate the hidden trouble of fingerprint and liquid residue that manual shaking colorimetric cup can bring, reduce its influence on the transmission and scattering of light, reduce measurement error.

Description

Technical Field

[0001] This utility model relates to the field of agricultural product testing technology, specifically a portable detector for heavy metal content in agricultural products. Background Technology

[0002] In the detection of heavy metal content in agricultural products, commonly used methods include atomic absorption spectrometry, atomic fluorescence spectrometry, inductively coupled plasma mass spectrometry, and spectrophotometry. The most commonly used method is spectrophotometry because its instruments and equipment are simple, easy to operate, and low in cost. It can be used to detect a variety of heavy metal elements, such as lead, cadmium, and chromium.

[0003] The principle is to perform qualitative and quantitative analysis of the sample solution by measuring the absorbance of light at a specific wavelength or within a certain wavelength range. In the detection of heavy metals, heavy metal ions are usually reacted with a specific colorimetric agent to generate colored compounds. The colored sample solution is poured into a cuvette and then placed in a spectrophotometer. The content of heavy metals is then calculated by measuring the degree of absorption of the colored compound to light at a specific wavelength.

[0004] However, during testing, on the one hand, the complexity of sample solution preparation leads to the presence of suspended impurities on the surface of the sample solution, reducing the accuracy of heavy metal content detection results; on the other hand, if the sample solution is shaken by hand to allow it to settle, improper force control can cause the sample solution in the cuvette to splash out and leave fingerprints and liquid residue on the outer wall of the cuvette, affecting light transmission and scattering, leading to measurement errors.

[0005] Therefore, there is an urgent need for a portable detector for heavy metal content in agricultural products to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a portable detector for heavy metal content in agricultural products to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a portable detector for heavy metal content in agricultural products, comprising a detector body, a window on the detector body, a cover of matching size above the window, a light source and a light source detector installed inside the detector body, and a cuvette placed inside the detector body, the cuvette being centrally positioned between the light source and the light source detector;

[0008] It also includes mounting components, which are located inside the detector body to assist in the installation of cuvettes;

[0009] The tapping component is used to tap the bottom of the cuvette after it has been placed.

[0010] The driver component is used to drive the striking component;

[0011] And a rotating component for rotating the drive component.

[0012] The mounting assembly includes a U-shaped mounting bracket fixed inside the detector body, and a cuvette sleeve for cuvette insertion is fixed on the U-shaped mounting bracket.

[0013] The tapping assembly is provided in two sets, and the two sets of tapping assemblies are symmetrically arranged on both sides of the U-shaped mounting bracket. The tapping assembly includes a connecting plate fixedly connected to the U-shaped mounting bracket. The cuvette sleeve and the connecting plate are slidably connected through tapping holes to a tapping rod for striking against the cuvette. A reset assembly for assisting the tapping rod to reset is provided between the tapping rod and the connecting plate.

[0014] The drive assembly includes a drive disk disposed inside the detector body. Multiple sets of rubber protrusions are fixed on the outer side of the drive disk for pressing against the end of the striking rod, and the multiple sets of rubber protrusions are distributed in a ring array on the outer side of the drive disk.

[0015] The rotating assembly includes a rotating shaft rotatably connected to the body of the detector, a drive disk fixed in the center on the rotating shaft, and one end of the rotating shaft located on the outside of the detector body and fixedly connected to a drive pin.

[0016] The reset assembly includes a circular baffle fixedly sleeved on the outside of the striking rod, and a spring sleeved on the outside of the striking rod, with the two ends of the spring connected to the circular baffle and the connecting plate, respectively.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This utility model discloses a portable heavy metal content detector for agricultural products. During the detection of heavy metal content in agricultural products, the coordinated action of the installation component, drive component, rotation component, and tapping component not only causes impurities suspended on the surface of the sample solution in the cuvette to settle, improving the accuracy of the heavy metal content detection results, but also eliminates the potential risks of fingerprints and liquid residues caused by manually shaking the cuvette, reduces its influence on light transmission and scattering, and minimizes measurement errors. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0020] Figure 2 This is a schematic diagram showing the positional relationship between the light source detector and the cuvette of this utility model;

[0021] Figure 3 This is a schematic diagram showing the positional relationship between the light source and the cuvette in this utility model.

[0022] Figure 4 This is a schematic diagram of the installation component and the rotating component of this utility model;

[0023] Figure 5 This is a schematic diagram of the striking component structure of this utility model;

[0024] Figure 6 This is a schematic diagram of the drive component structure of this utility model.

[0025] In the diagram: 101, detector body; 102, window; 103, cover; 104, light source; 105, light source detector; 106, cuvette; 201, U-shaped mounting bracket; 202, cuvette sleeve; 301, connecting plate; 302, striking rod; 303, striking hole; 401, drive pin; 402, rotating shaft; 501, drive disc; 502, rubber protrusion; 601, circular baffle; 602, spring. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-6 The present invention provides a portable detector for heavy metal content in agricultural products, comprising a detector body 101, a window 102 on the detector body 101, a cover 103 of matching size above the window 102, a light source 104 and a light source detector 105 installed inside the detector body 101, and a cuvette 106 placed inside the detector body 101, the cuvette 106 being centrally located between the light source 104 and the light source detector 105;

[0028] It should be noted that in the process of detecting heavy metal content in agricultural products, the sample solution in the cuvette 106 is irradiated by a light source 104 with a specific wavelength, and then the absorbance of the sample solution to light is detected by the light source detector 105. The content of heavy metals is calculated by measuring the degree of absorption of light of a specific wavelength by the sample solution. This method is spectrophotometry, which is a conventional technical means in this detection process. Its working principle and operation method will not be described in detail here.

[0029] It also includes mounting components, which are located inside the detector body 101 to assist in the installation of the cuvette 106;

[0030] A tapping component for tapping the bottom of the placed cuvette 106;

[0031] The driver component is used to drive the striking component;

[0032] And, a rotating component for rotating the drive component;

[0033] It should be noted that during the process of using the portable heavy metal content detector for agricultural products to detect heavy metal content, the cooperation of the installation component, drive component, rotation component, and tapping component not only causes impurities suspended on the surface of the sample solution in cuvette 106 to settle, improving the accuracy of heavy metal content detection results, but also eliminates the potential risks of fingerprints and liquid residues caused by manually shaking cuvette 106, reduces its influence on light transmission and scattering, and minimizes measurement errors.

[0034] The mounting components include a U-shaped mounting bracket 201 fixed inside the detector body 101, and a cuvette sleeve 202 for cuvette 106 to be inserted and installed on the U-shaped mounting bracket 201.

[0035] It should be noted here that the cuvette 106 is inserted and installed through the installation and connection of the U-shaped mounting bracket 201 and the cuvette sleeve 202.

[0036] Two sets of striking components are provided, and the two sets of striking components are symmetrically arranged on both sides of the U-shaped mounting bracket 201. The striking components include a connecting plate 301 fixedly connected to the U-shaped mounting bracket 201, and a striking rod 302 for striking the cuvette 106 through a striking hole 303 on the cuvette sleeve 202 and the connecting plate 301. A reset component for assisting the resetting of the striking rod 302 is provided between the striking rod 302 and the connecting plate 301.

[0037] It should be noted that: by rotating the drive disk 501, multiple sets of rubber protrusions 502 on the drive disk 501 sequentially contact and abut against the end of the striking rod 302. Through the abutment between the end of the striking rod 302 and the rubber protrusions 502, the striking rod 302 is pushed upward, causing the other end of the striking rod 302 to strike the bottom of the color cuvette 106 through the striking hole 303. Through the intermittent abutment between the rubber protrusions 502 and the end of the striking rod 302, and the reset action of the spring 602 on the striking rod 302 after being pushed, the striking rod 302 is subjected to force and undergoes up-and-down reciprocating motion. Through the up-and-down reciprocating motion of the striking rod 302, the bottom of the color cuvette 106 is intermittently struck.

[0038] The drive assembly includes a drive disk 501 disposed inside the detector body 101. Multiple sets of rubber protrusions 502 are fixed on the outer side of the drive disk 501 for pressing against the end of the striking rod 302, and the multiple sets of rubber protrusions 502 are arranged in a ring array on the outer side of the drive disk 501.

[0039] It should be noted here that the end of the striking rod 302 is pushed against each other by the drive disc 501 and the rubber protrusion 452.

[0040] The rotating assembly includes a rotating shaft 402 rotatably connected to the body 101 of the detector, a drive disk 501 centrally fixed on the rotating shaft 402, and one end of the rotating shaft 402 located on the outside of the body 101 of the detector and fixedly connected to a drive pin 401.

[0041] It should be noted that: by driving the drive pin 401, the drive shaft 402 is driven to rotate, and the rotation of the drive shaft 402 drives the drive disk 501 to rotate.

[0042] The reset assembly includes a circular baffle 601 fixedly sleeved on the outside of the striking rod 302, and a spring 602 sleeved on the outside of the striking rod 302. The two ends of the spring 602 are respectively connected to the circular baffle 601 and the connecting plate 301.

[0043] It should be noted here that the spring force of the spring 602 is used to reset the push-pull striking rod 302.

[0044] Working principle: When using a portable heavy metal content detector for agricultural products to detect the heavy metal content in agricultural products, the agricultural product sample is first pretreated before the experiment, and then the sample solution is prepared.

[0045] After the sample solution is prepared, place the sample solution in the cuvette 106, and then use the installation connection of the mounting components to snap the cuvette 106 into the cuvette sleeve 202.

[0046] After the cuvette 106 is inserted, drive the drive pin 401 to rotate the drive shaft 402. The rotation of the shaft 402 causes the drive disk 501 to rotate. This rotation causes multiple sets of rubber protrusions 502 on the drive disk 501 to sequentially contact and abut against the end of the striking rod 302. This contact pushes the striking rod 302 upwards, causing its other end to tap the bottom of the cuvette 106 through the striking hole 303. The striking rod 302 is subjected to intermittent resistance between the rubber protrusion 502 and the end of the striking rod 302, and the spring 602 resets the striking rod 302 after being pushed. This causes the striking rod 302 to move up and down in a reciprocating motion. Through the reciprocating motion of the striking rod 302, the bottom of the cuvette 106 is intermittently tapped. This not only causes impurities suspended on the surface of the sample solution in the cuvette 106 to settle, but also eliminates the risk of fingerprints and liquid residue caused by manually shaking the cuvette 106, reduces its influence on light transmission and scattering, and reduces measurement errors.

[0047] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A portable detector for heavy metal content in agricultural products, comprising: The detector body (101) has a window (102) on it, and a cover (103) of the same size is provided above the window (102). A light source (104) and a light source detector (105) are installed inside the detector body (101). A cuvette (106) is placed inside the detector body (101), and the cuvette (106) is centrally located between the light source (104) and the light source detector (105). Its characteristic is that it further includes: The mounting components are located inside the detector body (101) to assist in the installation of the cuvettes (106); A tapping component for tapping the bottom of the placed cuvette (106); The driver component is used to drive the striking component; And a rotating component for rotating the drive component.

2. The portable heavy metal content detector for agricultural products according to claim 1, characterized in that: The mounting assembly includes a U-shaped mounting bracket (201) fixed inside the detector body (101), and a cuvette sleeve (202) for inserting and mounting a cuvette (106) is fixed on the U-shaped mounting bracket (201).

3. The portable heavy metal content detector for agricultural products according to claim 2, characterized in that: Two sets of the striking components are provided, and the two sets of striking components are symmetrically arranged on both sides of the U-shaped mounting bracket (201). The striking components include a connecting plate (301) fixedly connected to the U-shaped mounting bracket (201). The cuvette sleeve (202) and the connecting plate (301) are slidably connected with a striking rod (302) for striking against the cuvette (106) through a striking hole (303). A reset component for assisting the resetting of the striking rod (302) is provided between the striking rod (302) and the connecting plate (301).

4. The portable heavy metal content detector for agricultural products according to claim 3, characterized in that: The drive assembly includes a drive disk (501) disposed inside the body (101) of the detector. The outer side of the drive disk (501) is fixed with multiple sets of rubber protrusions (502) for pressing against the end of the striking rod (302), and the multiple sets of rubber protrusions (502) are arranged in a ring array on the outer side of the drive disk (501).

5. A portable heavy metal content detector for agricultural products according to claim 4, characterized in that: The rotating assembly includes a rotating shaft (402) rotatably connected to the body (101) of the detector, a drive disk (501) centrally fixed on the rotating shaft (402), and one end of the rotating shaft (402) located on the outside of the body (101) of the detector and fixedly connected to a drive pin (401).

6. A portable heavy metal content detector for agricultural products according to claim 3, characterized in that: The reset assembly includes a circular baffle (601) fixedly sleeved on the outside of the striking rod (302), and a spring (602) sleeved on the outside of the striking rod (302). The two ends of the spring (602) are respectively connected to the circular baffle (601) and the connecting plate (301).

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