Rapid pesticide residue screening instrument

Abstract

The invention belongs to the technical field of pesticide residue detection, and discloses a rapid pesticide residue screening instrument which comprises a screening instrument body and further comprises a sample groove formed in one side of the top of the screening instrument body; the sample groove turning cover is hinged to one side of the screening instrument body and located at the top of the sample groove; the control panel is arranged on the other side of the top of the screening instrument body, and the top of the screening instrument body is arranged on a protection mechanism on the top of the control panel; according to the technical scheme, through the arrangement of the panel protection shell, the linkage assembly and the driving mechanism, the surface of the idle control panel can be shielded and protected through the design of the panel protection shell, external dust and collision are avoided, a good protection effect on the control panel is achieved, and the service life of the control panel is prolonged. And then the driving mechanism is driven to drive the linkage assemblies on the two sides to move oppositely, so that the linkage assemblies drive the driven gear, the mounting rod and the panel protection shell to rotate, and follow-up use is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of pesticide residue detection, and in particular is a rapid pesticide residue screening instrument. Background Art

[0002] The rapid pesticide residue screening instrument is a portable or desktop instrument used to quickly detect pesticide residues in agricultural products (such as vegetables, fruits, and grains). It is widely used in agricultural production, market supervision, food safety testing, and other fields. Its core function is to quickly determine whether a sample contains excessive pesticide residues through biochemical or spectral analysis technology to ensure food safety. The main principles are as follows: 1. Enzyme inhibition method a Utilize the inhibitory effect of organophosphorus and carbamate pesticides on acetylcholinesterase (AChE) and determine pesticide residues by detecting changes in enzyme activity.

[0003] b The instrument measures the enzyme activity inhibition rate through colorimetry or electrochemical method. The higher the inhibition rate, the more pesticide residue there is.

[0004] Advantages: easy operation, low cost, suitable for rapid on-site detection.

[0005] Disadvantages: It mainly targets specific types of pesticides and has limited detection capabilities for other types of pesticides (such as pyrethroids).

[0006] 2. Immunoassay (colloidal gold method / enzyme-linked immunosorbent assay) a. Detect pesticide residues by using antigen-antibody specific binding reaction through colloidal gold labeling or enzyme-linked immunosorbent assay.

[0007] Advantages: high sensitivity, strong specificity, suitable for detection of various pesticide residues.

[0008] Disadvantages: Reagents are expensive and need to be replaced regularly.

[0009] 3. Spectroscopic analysis (such as Raman spectroscopy, near-infrared spectroscopy) By analyzing the spectral characteristics of samples and combining them with chemometric methods, pesticide residues can be quickly identified.

[0010] Advantages: No reagents required, non-destructive testing, and the ability to detect multiple components simultaneously.

[0011] Disadvantages: The instrument cost is high and the operator's technical requirements are high.

[0012] The existing rapid pesticide residue screening instrument is mainly composed of a sample slot and a control panel. A cover is provided on the top of the sample slot for protection, while the control panel is directly exposed to the outside world, which may cause external dust to contaminate the panel when it is not working, and may cause errors and bumps during movement, resulting in damage to the panel. Therefore, it needs to be improved. SUMMARY

[0013] To solve the problems in the background art, the present application provides a pesticide residue rapid screening instrument, which has the advantage of facilitating protection of the control panel when idle.

[0014] To achieve the above object, the present application provides the following technical scheme: a pesticide residue rapid screening instrument, comprising a screening instrument body, further comprising: a sample tank arranged on one side of the top of the screening instrument body; a sample tank flap hinged to one side of the screening instrument body and located on the top of the sample tank; a control panel arranged on the other side of the top of the screening instrument body, and a protection mechanism arranged on the top of the control panel; wherein the protection mechanism comprises a mounting rod movably sleeved on the top of the screening instrument body and located on both sides of the control panel, a panel protection shell fixedly sleeved on the surface of the mounting rod, a driven gear fixedly sleeved on the end of the mounting rod, an installation shell arranged on the outside of the end of the mounting rod, a linkage assembly arranged in the inside of the installation shell and located on one side of the driven gear, and a driving mechanism arranged in the inside of the installation shell and located on the inside of the linkage assembly.

[0015] Preferably, the linkage assembly comprises a first limiting rod, a rectangular sliding plate, and a driving gear block. The first limiting rod is fixedly installed on both sides of the inside of the installation shell, the rectangular sliding plate is slidingly connected to the surface of the first limiting rod, and the driving gear block is arranged on the outside of the rectangular sliding plate.

[0016] Preferably, the top of the driving gear block is engaged with the surface of the driven gear.

[0017] Preferably, the number of the mounting rods is two, the two mounting rods are completely the same, and the total area of the two mounting rods is greater than that of the sample tank flap.

[0018] Preferably, the driving mechanism comprises a triangular plate, a movable strip, a driving shaft, and a driving assembly. The triangular plate is fixedly installed at the bottom end of the inside of the rectangular sliding plate, the driving assembly is arranged in the middle of the installation shell, the movable strip is arranged between the driving assembly and one side of the triangular plate, and the driving shaft is fixedly sleeved on both sides of the movable strip.

[0019] Preferably, the bottom end of the driving shaft extends into the inclined groove of the triangular plate, and the bottom end of the driving shaft is slidingly connected with the inner wall of the inclined groove of the triangular plate.

[0020] Preferably, the driving assembly comprises a movable plate, a driving screw, and a limiting shaft. The movable plate is movably mounted in the middle of the mounting shell, the driving screw is threadedly sleeved in the middle of the top of the mounting shell, the limiting shaft is fixedly mounted on the end of the driving screw, and the limiting shaft is located inside the top of the movable plate.

[0021] Preferably, the surface of the first limiting rod is provided with a buffer assembly located inside the rectangular sliding plate, and the buffer assembly includes a buffer plate, a second limiting rod, a sliding block, a connecting arm and an elastic buffer member; The buffer plate is slidably connected to the inner side of the surface of the first limit rod, the second limit rod is fixedly installed on the inner side of the buffer plate, the second limit rod is located on both sides of the first limit rod, the sliding block is slidably connected to the surface of the second limit rod, the connecting arm is hinged to the inner side of the sliding block, and the sliding block is elastically connected to the inner side of the buffer plate through an elastic buffer.

[0022] Preferably, the other end of the connecting arm is hinged to the inner end surface of the first limiting rod.

[0023] Preferably, the surface of the second limiting rod is slidably connected to the inner wall of the elastic buffer component.

[0024] Compared with the prior art, the present invention has the following beneficial effects: The above technical solution sets up a panel protective shell, a linkage component and a driving mechanism. Through the design of the panel protective shell, the surface of the control panel can be shielded and protected when idle to avoid external dust and bumps, thereby providing good protection for the control panel. Then, the driving mechanism can be used to drive the linkage components on both sides to move toward each other, so that the linkage component drives the driven gear, the mounting rod and the panel protective shell to rotate, thereby facilitating subsequent use.

[0025] The present invention provides a buffer plate, a connecting arm and an elastic buffer. When the linkage components on both sides face each other, they will first contact the outer side of the buffer plate, and then squeeze the sliding block to slide on the surface of the second limit rod, so that the connecting arm is smoothly deflected, and the movement of the sliding block will compress the elastic buffer. Subsequently, through the deflection of the connecting arm and the elastic force of the elastic buffer, the force of the linkage components moving toward each other can be smoothly buffered, thereby buffering the driven gear, the mounting rod and the panel protective shell when they are rotated to fully open, avoiding rapid opening and causing damage to the panel protective shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic structural diagram of the control panel of the present invention; Figure 3 for Figure 2 Schematic diagram of the local enlarged structure at A in the middle; Figure 4This is a schematic cross-sectional view of the mounting shell of the present invention; Figure 5 for Figure 4 Schematic diagram of the local enlarged structure at B in the middle; Figure 6 It is a schematic diagram of the partial structure of the driving mechanism of the present invention.

[0027] In the figure: 1. Screening instrument body; 2. Sample slot; 3. Sample slot flip cover; 4. Control panel; 5. Protection mechanism; 501. Mounting rod; 502. Panel protection shell; 503. Driven gear; 504. Linkage assembly; 5041. First limiting rod; 5042. Rectangular sliding plate; 5043. Active gear block; 505. Mounting shell; 6. Driving mechanism; 601. Triangular plate; 602. Movable bar; 603. Driving shaft; 604. Driving assembly; 6041. Movable plate; 6042. Driving screw; 6043. Limiting shaft; 7. Buffer assembly; 701. Buffer plate; 702. Second limiting rod; 703. Sliding block; 704. Connecting arm; 705. Elastic buffer. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] like Figures 1 to 6 As shown, the present invention provides a rapid screening instrument for pesticide residues, comprising a screening instrument body 1, and also comprising: a sample slot 2, which is arranged on one side of the top of the screening instrument body 1; a sample slot flip cover 3, which is hinged to one side of the screening instrument body 1 and located on the top of the sample slot 2; a control panel 4, which is arranged on the other side of the top of the screening instrument body 1, and a protective mechanism 5 is arranged on the top of the control panel 4 on the top of the screening instrument body 1; wherein the protective mechanism 5 comprises a mounting rod 501 movably sleeved on the top of the screening instrument body 1 and on both sides of the control panel 4, a panel protective shell 502 is fixedly sleeved on the surface of the mounting rod 501, a driven gear 503 is fixedly sleeved on the end of the mounting rod 501, a mounting shell 505 located on the outside of the end of the mounting rod 501 is provided on the top of the screening instrument body 1, a linkage assembly 504 located on one side of the driven gear 503 is provided inside the mounting shell 505, and a driving mechanism 6 located inside the linkage assembly 504 is provided inside the mounting shell 505.

[0030] The driving mechanism 6 drives the two sides of the linkage assembly 504 toward each other, so that when the linkage assembly 504 moves, it can smoothly drive the driven gear 503, the mounting rod 501 and the panel protective shell 502, and then the panel protective shell 502 is driven to flip ninety degrees to open, thereby releasing the shielding protection of the control panel 4, and then the control panel 4 can be smoothly opened.

[0031] like Figure 3 As shown, the linkage assembly 504 includes a first limiting rod 5041, a rectangular sliding plate 5042 and an active gear block 5043; The first limiting rods 5041 are fixedly mounted on both sides of the mounting shell 505 . The rectangular sliding plate 5042 is slidably connected to the surface of the first limiting rods 5041 . The active gear block 5043 is disposed outside the rectangular sliding plate 5042 .

[0032] With the above solution, when the rectangular sliding plate 5042 and the active gear block 5043 are driven to move toward or away from each other, they will slide in the horizontal direction along the surface of the first limiting rod 5041 .

[0033] like Figure 4 As shown, the top of the driving gear block 5043 is engaged with the surface of the driven gear 503 .

[0034] With the above solution, the active gear block 5043 is driven to move toward each other, so that the teeth on the surface of the active gear block 5043 drive the teeth on the surface of the driven gear 503, thereby driving the driven gear 503, the mounting rod 501 and the panel protection shell 502 to rotate.

[0035] like Figure 3 As shown, there are two mounting rods 501 , the two mounting rods 501 are identical, and the total area of ​​the two mounting rods 501 is larger than the sample slot flip cover 3 .

[0036] With the above solution, by designing that the combined area of ​​the two mounting rods 501 is larger than the control panel 4 , the two panel protection shells 502 can completely shield and protect the control panel 4 when the inner ends thereof are rotated and fitted together.

[0037] like Figures 3 to 6 As shown, the driving mechanism 6 includes a triangular plate 601, a movable bar 602, a driving shaft 603 and a driving assembly 604; The triangle plate 601 is fixedly mounted on the bottom end of the inner side of the rectangular sliding plate 5042 , the driving assembly 604 is arranged in the middle of the mounting shell 505 , the movable bar 602 is arranged between the driving assembly 604 and one side of the triangle plate 601 , and the driving shaft 603 is fixedly sleeved on both sides of the movable bar 602 .

[0038] Preferably, the bottom end of the driving shaft 603 extends to the inside of the inclined groove of the triangular plate 601 , and the bottom end of the driving shaft 603 is slidably connected to the inner wall of the inclined groove of the triangular plate 601 .

[0039] With the above solution, when the movable bar 602 is driven to move to one side, the driving shafts 603 at both ends of the movable bar 602 will pull the triangular plate 601 and the rectangular sliding plate 5042 to move toward each other.

[0040] like Figure 5 As shown, the driving assembly 604 includes a movable plate 6041, a driving screw 6042 and a limiting shaft 6043; The movable plate 6041 is movably installed in the middle of the installation shell 505, the driving screw 6042 is threadedly sleeved on the middle of the top of the installation shell 505, the limiting shaft 6043 is fixedly installed on the end of the driving screw 6042, and the limiting shaft 6043 is located inside the top of the movable plate 6041.

[0041] With the above solution, by providing a limit shaft 6043 , when the screw rod 6042 is rotated to move to one side, the limit shaft 6043 is rotated and limited inside the movable plate 6041 , so that the movable plate 6041 moves to one side synchronously.

[0042] like Figure 3 As shown, the surface of the first limiting rod 5041 is provided with a buffer assembly 7 located inside the rectangular sliding plate 5042. The buffer assembly 7 includes a buffer plate 701, a second limiting rod 702, a sliding block 703, a connecting arm 704 and an elastic buffer 705. The buffer plate 701 is slidably connected to the inner side of the surface of the first limiting rod 5041, the second limiting rod 702 is fixedly installed on the inner side of the buffer plate 701, the second limiting rod 702 is located on both sides of the first limiting rod 5041, the sliding block 703 is slidably connected to the surface of the second limiting rod 702, the connecting arm 704 is hinged to the inner side of the sliding block 703, and the sliding block 703 is elastically connected to the inner side of the buffer plate 701 through the elastic buffer part 705.

[0043] With the above solution, the elastic force of the elastic buffer 705 pushes the sliding blocks 703 to move in opposite directions.

[0044] like Figure 3 As shown, the other end of the connecting arm 704 is hinged to the inner end surface of the first limiting rod 5041.

[0045] With the above solution, when the buffer plates 701 are squeezed and move toward each other, the sliding block 703 is squeezed and slides along the buffer plates 701 , thereby driving the connecting arm 704 to deflect, so that the buffer plates 701 move toward each other smoothly.

[0046] like Figure 3As shown, the surface of the second limiting rod 702 is slidably connected to the inner wall of the elastic buffer 705.

[0047] With the above solution, the second limiting rod 702 is designed to limit the sliding displacement of the sliding block 703 and simultaneously limit the compression and stretching of the elastic buffer 705 .

[0048] The working principle and use process of the present invention: First, the operator can rotate the driving screw 6042. When the driving screw 6042 rotates to move to one side, the limiting shaft 6043 will rotate and pull the movable plate 6041 and the movable bar 602 to move to one side as a whole, so that the driving shafts 603 at both ends of the movable bar 602 can slide in the inner inclined groove of the triangular plate 601, and can smoothly pull the two triangular plates 601, the rectangular sliding plate 5042 and the active gear block 5043 to move toward each other. At this time, due to the engagement between the top of the active gear block 5043 and the surface of the driven gear 503, the driven gear 503, the mounting rod 501 and the panel protective shell 502 rotate as a whole.

[0049] At the same time, when the rectangular sliding plate 5042 slides toward each other on the surface of the first limiting rod 5041, it will first touch the buffer plate 701, and then slowly squeeze the buffer plate 701 to move toward each other, and then squeeze the sliding block 703 to slide along the surface of the second limiting rod 702, and the connecting arm 704 will be driven to deflect, and the elastic buffer 705 will be compressed, and finally the elastic force of the elastic buffer 705 will hinder and buffer the force of the buffer plate 701. The design of the connecting arm 704 can keep the force evenly consumed, so that the panel protective shell 502 can be buffered when it is almost fully rotated open, until it slowly opens. Finally, the operator can first press the button to flip the sample slot 2 open, insert the sample tube to be tested into the sample slot 2, and then touch the control panel 4 to control the overall operation of the screening instrument body 1 to screen the pesticide residues in the test tube inside the sample slot 2.

[0050] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0051] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A rapid pesticide residue screening instrument, comprising a screening instrument body (1), characterized in that: Also includes: A sample slot (2), the sample slot (2) being arranged on one side of the top of the screening instrument body (1); A sample slot flip cover (3), the sample slot flip cover (3) is hinged to one side of the screening instrument body (1) and is located on the top of the sample slot (2); A control panel (4), the control panel (4) being arranged on the other side of the top of the screening instrument body (1), and a protective mechanism (5) being arranged on the top of the control panel (4) on the top of the screening instrument body (1); The protective mechanism (5) comprises a mounting rod (501) movably sleeved on the top of the screening instrument body (1) and on both sides of the control panel (4); a panel protective shell (502) is fixedly sleeved on the surface of the mounting rod (501); a driven gear (503) is fixedly sleeved on the end of the mounting rod (501); a mounting shell (505) is provided on the top of the screening instrument body (1) and is located outside the end of the mounting rod (501); a linkage assembly (504) is provided on one side of the driven gear (503) inside the mounting shell (505); and a driving mechanism (6) is provided inside the mounting shell (505) and is located inside the linkage assembly (504).

2. The pesticide residue rapid screening instrument according to claim 1, characterized in that: The linkage assembly (504) comprises a first limiting rod (5041), a rectangular sliding plate (5042) and an active gear block (5043); The first limiting rod (5041) is fixedly mounted on both sides of the interior of the mounting shell (505), the rectangular sliding plate (5042) is slidably connected to the surface of the first limiting rod (5041), and the active gear block (5043) is arranged on the outside of the rectangular sliding plate (5042).

3. The rapid pesticide residue screening instrument according to claim 2, characterized in that: The top of the driving gear block (5043) is meshed with the surface of the driven gear (503).

4. The rapid pesticide residue screening instrument according to claim 1, characterized in that: There are two mounting rods (501), the two mounting rods (501) are identical, and the total area of ​​the two mounting rods (501) is larger than the sample tank flip cover (3).

5. The rapid pesticide residue screening instrument according to claim 1, characterized in that: The driving mechanism (6) comprises a triangular plate (601), a movable bar (602), a driving shaft (603) and a driving assembly (604); The triangular plate (601) is fixedly mounted on the bottom end of the inner side of the rectangular sliding plate (5042), the driving assembly (604) is arranged in the middle of the mounting shell (505), the movable bar (602) is arranged between the driving assembly (604) and one side of the triangular plate (601), and the driving shaft (603) is fixedly sleeved on both sides of the movable bar (602).

6. The rapid pesticide residue screening instrument according to claim 5, characterized in that: The bottom end of the driving shaft (603) extends to the inside of the inclined groove of the triangular plate (601), and the bottom end of the driving shaft (603) is slidably connected to the inner wall of the inclined groove of the triangular plate (601).

7. The rapid pesticide residue screening instrument according to claim 5, characterized in that: The driving assembly (604) includes a movable plate (6041), a driving screw (6042) and a limiting shaft (6043); The movable plate (6041) is movably mounted in the middle of the mounting shell (505), the driving screw (6042) is threadedly sleeved in the middle of the top of the mounting shell (505), the limiting shaft (6043) is fixedly mounted on the end of the driving screw (6042), and the limiting shaft (6043) is located inside the top of the movable plate (6041).

8. The rapid pesticide residue screening instrument according to claim 2, characterized in that: The surface of the first limiting rod (5041) is provided with a buffer assembly (7) located inside the rectangular sliding plate (5042), and the buffer assembly (7) comprises a buffer plate (701), a second limiting rod (702), a sliding block (703), a connecting arm (704) and an elastic buffer (705); The buffer plate (701) is slidably connected to the inner side of the surface of the first limiting rod (5041), the second limiting rod (702) is fixedly installed on the inner side of the buffer plate (701), the second limiting rod (702) is located on both sides of the first limiting rod (5041), the sliding block (703) is slidably connected to the surface of the second limiting rod (702), the connecting arm (704) is hinged to the inner side of the sliding block (703), and the sliding block (703) is elastically connected to the inner side of the buffer plate (701) through an elastic buffer member (705).

9. The rapid pesticide residue screening instrument according to claim 8, characterized in that: The other end of the connecting arm (704) is hinged to the inner end surface of the first limiting rod (5041).

10. The rapid pesticide residue screening instrument according to claim 8, characterized in that: The surface of the second limiting rod (702) is slidably connected to the inner wall of the elastic buffer (705).

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