Food pesticide residue detector

Abstract

The utility model relates to a food pesticide residue detector, which solves the technical problems that a rapid detection card is inconvenient to place, a pesticide is easy to touch, a pressure pad is easy to separate from the rapid detection card, and energy is wasted due to simultaneous heating of channels, and comprises a machine body, a machine cover is rotatably arranged on the machine body, a plurality of transversely arranged channels are arranged on the upper end surface of the machine body, and heating sheets are arranged on the channels. Pressing strips are installed at the ends of the multiple channels in an up-down sliding mode, sliding rods sliding in the machine body are fixedly connected to the lower portions of the left ends of the pressing strips, racks sliding in the machine body are fixedly connected to the lower portions of the right ends of the pressing strips, the racks are meshed with gears, the gears are coaxially connected with worm wheels, the worm wheels are meshed with worms, and one ends of the worms penetrate through the machine body to the outer side. According to the utility model, the original small card slot is changed into the pressing bar which slides up and down, so that the space is larger when the quick test card passes through, the quick test card is easier to pass through, the operation is convenient, medicaments on the quick test card are not touched any more, and the quick test card only needs to be correctly placed at a corresponding position to adjust the pressing rod.

Description

Technical Field

[0001] This utility model relates to the field of food safety testing technology, specifically a food pesticide residue detector. Background Technology

[0002] A food pesticide residue detection instrument is a device used to detect pesticide residues in food. Existing detection instruments are mainly divided into two types: one is a chemical rapid test instrument, which is portable and mostly used outdoors, such as in fruit and vegetable production bases and farmers' markets; the other is an enzyme inhibition rate test instrument, which is mainly used indoors, such as in laboratories and canteens. This utility model mainly focuses on improving the chemical rapid test instrument.

[0003] Current rapid chemical detection instruments have the following technical problems in use:

[0004] 1. When conducting the test, the rapid test card needs to be folded in half along the center line first, and then the card should be passed through the small slots at both ends of the channel. Since the purpose of the small slots is to hold the rapid test card, they are relatively small, which makes it very inconvenient for the card to pass through, especially since the card is passed through at a bent angle. Moreover, when the card passes through, the small slots can easily come into contact with the reagent on the card, thus affecting the test results.

[0005] 2. When starting the rapid test, the cover of the detector needs to be closed. When closing, the rapid test card is folded in half by the pressure pad, so that the two reagents on the top and bottom of the rapid test card can react. However, since the rapid test card is only fixed in the middle by the small slot, the top and bottom ends are in a movable state. Especially when multiple samples are tested at the same time and the cover is closed, the pressure pad can easily detach from the rapid test card, causing the reagent on the top end of the rapid test card to fail to react with the reagent on the bottom end. Therefore, each time you use it, you need to carefully align the rapid test card and observe while closing the cover slowly.

[0006] 3. Currently, multiple heating elements on the channels of the detector are connected in series and controlled by the same switch. That is, regardless of the number of samples being tested, the heating elements will heat up simultaneously. For example, with a 10-channel heating element, when only one sample is being tested, all 10 channels will heat up at the same time, resulting in wasted power.

[0007] Based on this, the present invention provides a food pesticide residue detector to solve the above problems. Utility Model Content

[0008] In view of the above situation and to overcome the defects of the prior art, this utility model provides a food pesticide residue detector. This utility model has a novel structure and ingenious design, and effectively solves the technical problems of inconvenient placement of rapid test cards, easy contact with pesticides, easy detachment of pressure pads from rapid test cards, and energy waste caused by simultaneous heating of channels.

[0009] A food pesticide residue detector includes a body with a cover rotatably mounted on it. Multiple horizontally arranged channels are opened on the upper surface of the body, and heating elements are installed on the channels. The detector is characterized in that pressure strips are slidably installed vertically at the ends of the multiple channels. A sliding rod is fixedly connected to the lower left end of the pressure strip and slides within the body. A rack is fixedly connected to the lower right end of the pressure strip and slides within the body. The rack meshes with a gear, and a worm gear is coaxially connected to the gear. The worm gear meshes with a worm, and one end of the worm extends through the body to the outside.

[0010] Preferably, the outer side of the cover is provided with multiple elastic pressure plates corresponding to the channel positions. Sleeves are fixed on both sides of the multiple elastic pressure plates. Pressure rods are slidably installed in the two sleeves. Sliding rods that slide in the sleeves are fixed below both ends of the pressure rods. An adjusting screw is threadedly connected in the middle of the pressure rod. Multiple pressure pads corresponding to the elastic pressure plates are fixed on the lower end face of the pressure rod.

[0011] Preferably, each of the heating elements is connected to an independent switch placed on the machine body, and multiple heating elements are connected in series to a main switch.

[0012] Preferably, the end of the channel is fixed with an L-shaped downward elastic strip facing the machine cover, and the upper end of the channel is provided with an L-shaped upward elastic strip placed inside the elastic pressure plate. The upward and downward elastic strips are staggered.

[0013] Preferably, a sliding groove is provided at the left end of the machine body, and a slider fixed on the sliding rod slides up and down in the sliding groove.

[0014] Preferably, a sliding chamber is provided inside the right side of the machine body, and a rack, gear, worm gear, and worm are installed inside the sliding chamber.

[0015] Preferably, a worm knob is fixed to the end of the worm.

[0016] Preferably, a lead screw bearing seat is installed on the cover, the lead screw is rotatably installed in the lead screw bearing seat, and a lead screw knob is fixed at the upper end of the lead screw.

[0017] Preferably, the machine body has a built-in display screen, the display screen is connected to control buttons, the display screen is connected to a controller, and the controller is connected to a built-in power supply.

[0018] Preferably, a protective cushioning pad is provided above the display screen and placed on the cover.

[0019] The present invention has the following technical effects.

[0020] 1. This utility model replaces the original small card slot with a sliding pressure bar, which makes the space for the rapid test card to pass through larger and easier, and is more convenient to operate. It will no longer touch the reagent on the rapid test card. You only need to place the rapid test card correctly in the corresponding position and adjust the pressure bar.

[0021] 2. This utility model uses upper and lower elastic strips to quickly fix the speed test card, and works with pressure rods and elastic pressure plates to accurately fold the speed test card for reaction. When pressed down, the pressure pad will not detach from the speed test card, ensuring the accurate reaction of the speed test card.

[0022] 3. In this invention, each heating element is connected to an independent switch to control the activation of each heating element. When the number of samples to be tested is small, only the corresponding opposite switch needs to be turned on, saving power. All heating elements are also connected in series to a main switch. When the number of samples to be tested is large, only the main switch needs to be turned on, and all heating elements can be heated simultaneously to meet the needs of different situations. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is a three-dimensional schematic diagram of the entire utility model after it has been opened.

[0025] Figure 2 This is a three-dimensional schematic diagram of the entire utility model after it is closed.

[0026] Figure 3 This is a cross-sectional schematic diagram of the slide bar, rack, and gear of this utility model.

[0027] Figure 4 This is a three-dimensional cross-sectional view of the slide bar and slider of this utility model.

[0028] Figure 5 This is an enlarged schematic diagram of the upper and lower elastic strips of this utility model.

[0029] Reference numerals: 1-Main body; 2-Cover; 3-Channel; 4-Heating element; 5-Pressure bar; 6-Slide rod; 7-Rack; 8-Gear; 9-Worm gear; 10-Worm; 11-Elastic pressure plate; 12-Sleeve; 13-Pressure rod; 14-Slide rod; 15-Adjusting screw; 16-Pressure pad; 17-Independent switch; 18-Main switch; 19-Lower pressure elastic bar; 20-Upper pressure elastic bar; 21-Slide groove; 22-Slider; 23-Sliding chamber; 24-Worm knob; 25-Screw bearing seat; 26-Screw knob; 27-Display screen; 28-Control button; 29-Protective buffer pad. Detailed Implementation

[0030] The foregoing and other technical contents, features and effects of this utility model are described in conjunction with the appendix below. Figures 1 to 5 The detailed description of the embodiments will make this clear. All references to the following embodiments are made with reference to the accompanying drawings.

[0031] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings.

[0032] This utility model is a food pesticide residue detector, including a body 1, a cover 2 rotatably mounted on the body 1, multiple horizontally arranged rectangular channels 3 on the upper surface of the body 1, heating elements 4 installed on the channels 3 for inserting rapid test cards, the heating elements 4 being connected to a power source, pressure strips 5 sliding up and down at the ends of the multiple channels 3 for fixing the rapid test cards, a slide rod 6 fixedly connected to the lower left end of the pressure strip 5, the slide rod 6 being able to slide up and down inside the body 1, a rack 7 fixedly connected to the lower right end of the pressure strip 5, the rack 7 being able to slide up and down inside the body 1, the rack 7 meshing with a gear 8, a worm gear 9 coaxially fixedly connected to the gear 8, the worm gear 9 meshing with a worm 10, one end of the worm 10 penetrating through the body 1 to the outside, and the rotating shafts of the gear 8 and the worm gear 9 being rotatably mounted on a bearing seat.

[0033] In practical use, open the cover 2, turn on the machine body 1, preheat the temperature to 38℃, rotate the worm 10, the worm 10 meshes with the worm wheel 9 and rotates, the worm wheel 9 coaxially drives the gear 8 to rotate, the gear 8 meshes with the rack 7 and slides upward, raising the pressure bar 5 a certain distance. Then, according to the required number of samples, take an appropriate number of rapid test cards, fold them in half along the center line and place them on the heating plate 4 on the channel 3. After the rapid test cards are placed, rotate the worm 10 in the opposite direction, the worm 10 meshes with the worm wheel 9 and rotates, the worm wheel 9 coaxially drives the gear 8 to rotate, the gear 8 meshes with the rack 7 and slides downward, so that the pressure bar 5 steadily presses down on multiple rapid test cards. Due to the self-locking of the worm wheel 9 and the worm 10, the pressure bar 5 can steadily press down on the rapid test cards without shaking, and the pressure bar 5 will not rise freely due to shaking.

[0034] Weigh 5g of sample using an electronic scale, cut it into small pieces and put it into a sample bottle. Add purified water or elution solution, shake, and let stand for 3 minutes. Then, use a dropper to draw up the upper sample liquid and drop 3 drops onto the white tablet of the rapid test card. Press the "Start" button. The reaction time will display "10min" and start the countdown to begin the test. (Note that the cover 2 should not be closed during this stage.) After the 10-minute countdown ends, close the cover 2 to allow the rapid test card to fold and begin to develop color. This process lasts for 3 minutes. After 3 minutes, the machine body 1 will continuously emit a beeping sound, indicating the end of the test.

[0035] It should be noted that the working principle of the device 1 itself is based on existing technology. This embodiment mainly improves multiple small card slots into an integral pressure strip 5, which makes operation more convenient and less likely to touch the reagent of the rapid test card.

[0036] As an example, the outer side of the cover 2 is provided with multiple elastic pressure plates 11 corresponding to the positions of the channels 3. The bending direction of the elastic pressure plates 11 is mainly towards the body 1. The elastic pressure plates 11 are rectangular in shape, with three sides not connected to the cover 2. Sleeves 12 are fixed on both sides of the elastic pressure plates 11 at both ends. The sleeves 12 are fixed on the cover 2. Pressure rods 13 are slidably installed inside the two sleeves 12. Sliding rods 14 are fixed below both ends of the pressure rods 13. The sliding rods 14 slide inside the sleeves 12. An extension plate is integrally connected to the middle of the pressure rod 13. A threaded hole is opened on the extension plate. An adjusting screw 15 is threaded into the threaded hole. The adjusting screw 15 passes through the middle of the threaded hole. Multiple pressure pads 16 are fixed on the lower end face of the pressure rod 13. The pressure pads 16 correspond to the elastic pressure plates 11.

[0037] In practical use, cover the machine with the cover 2 and rotate the adjusting screw 15. Since the sleeve 12 limits the sliding rod 14 on the pressure rod 13, the pressure rod 13 can only move up and down. When the pressure rod 13 moves downward, the pressure pad 16 on the pressure rod 13 applies pressure to the elastic pressure plate 11, causing the elastic pressure plate 11 to deform downward. Since the upper end of the rapid test card is placed below the elastic pressure plate 11, the elastic pressure plate 11 causes the upper and lower two pieces of the rapid test card to start the color reaction. The pressure of the pressure pad 16 does not need to be too large, just enough to satisfy the reaction, reducing the possibility of the pressure pad 16 slipping off the rapid test card and avoiding the problem of the drug slipping off and causing the test to fail.

[0038] As an example, each heating element 4 is connected to an independent switch 17 placed on the body 1 and then connected to a power source, which can control the heating element 4 to work independently. When the number of rapid test cards is small and not all channels 3 are needed, only a few channels 3 that are used can be selected for heating, reducing heating time and saving energy.

[0039] All heating elements 4 are connected in series with a main switch 18 and then connected to the power supply. When there are a large number of test cards, the main switch 18 can be turned on to connect all heating elements 4, which can meet the needs of different situations.

[0040] That is, each heating element 4 is connected in series with an independent switch 17 and then connected in parallel, and all heating elements 4 are connected in series and then connected in series with the main switch 18.

[0041] As an example, a downward elastic strip 19 in the shape of an L-shape facing the cover 2 is fixed at the end of the channel 3 to press the lower end of the speed test card. An upward elastic strip 20 in the shape of an L-shape is provided above the channel 3 and placed inside the elastic pressure plate 11 to press the upper end of the speed test card. The upward elastic strip 20 and the downward elastic strip 19 are staggered to avoid collision when the speed test card is folded, which would prevent the speed test card from fully reacting. The upward elastic strip 20 and the downward elastic strip 19 are placed on the side away from each other.

[0042] In practical use, first pass the test strip under the pressure strip 5, then insert one side of the test card into the upper pressure elastic strip 20 and the other side into the lower pressure elastic strip 19. In this way, the middle of the test card is fixed by the pressure strip 5, the upper end is pressed by the upper pressure elastic strip 20, and the lower end is pressed by the lower pressure elastic strip 19. When the cover 2 is closed, it ensures that the two reagents on the upper and lower parts of the test card react fully.

[0043] As an example, in order to enable the pressure strip 5 to slide up and down, a groove 21 is provided at the left end of the machine body 1, and a slider 22 slides up and down in the groove 21. The slider 22 is fixed on the slide rod 6.

[0044] As an example, in order to ensure the normal operation of the rack 7, gear 8, worm gear 9, and worm 10, a sliding chamber 23 is provided inside the right side of the machine body 1.

[0045] As an example, to facilitate the rotation of the worm gear 10, a worm gear knob 24 is fixed at the end of the worm gear 10, making it easier to rotate the worm gear 10.

[0046] As an example, in order to achieve normal rotation of the adjusting screw 15, a screw bearing seat 25 is installed on the machine cover 2. The adjusting screw 15 is rotatably installed in the screw bearing seat 25. In order to facilitate the rotation of the adjusting screw 15, a screw knob 26 is fixed at the upper end of the adjusting screw 15, making it more convenient to rotate the adjusting screw 15. When the pressure rod 13 moves upward to the top, the pressure rod 13 is limited by the bottom of the screw knob 26, so that the pressure rod 13 will not slip off the sleeve 12.

[0047] As an example, the body 1 has a built-in display screen 27 for displaying operation instructions. The display screen 27 is connected to control buttons 28 and a controller. The controller is connected to a built-in power supply.

[0048] As an example, a protective buffer pad 29 is provided above the display screen 27 and placed on the cover 2 to protect the display screen 27 from scratches and damage.

[0049] The present invention has the following technical effects.

[0050] 1. This utility model replaces the original small card slot with a sliding pressure bar, which makes the space for the rapid test card to pass through larger and easier, and is more convenient to operate. It will no longer touch the reagent on the rapid test card. You only need to place the rapid test card correctly in the corresponding position and adjust the pressure bar.

[0051] 2. This utility model uses upper and lower elastic strips to quickly fix the speed test card, and works with pressure rods and elastic pressure plates to accurately fold the speed test card for reaction. When pressed down, the pressure pad will not detach from the speed test card, ensuring the accurate reaction of the speed test card.

[0052] 3. In this invention, each heating element is connected to an independent switch to control the activation of each heating element. When the number of samples to be tested is small, only the corresponding opposite switch needs to be turned on, saving power. All heating elements are also connected in series to a main switch. When the number of samples to be tested is large, only the main switch needs to be turned on, and all heating elements can be heated simultaneously to meet the needs of different situations.

[0053] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be obvious to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A food pesticide residue detector, comprising a body (1), a cover (2) rotatably mounted on the body (1), and a plurality of transversely arranged channels (3) opened on the upper end face of the body (1), wherein heating elements (4) are installed on the channels (3), characterized in that, Multiple channels (3) are slidably mounted with pressure strips (5) at their ends. A slide rod (6) that slides inside the body (1) is fixedly connected to the lower left end of the pressure strip (5). A rack (7) that slides inside the body (1) is fixedly connected to the lower right end of the pressure strip (5). The rack (7) meshes with a gear (8). The gear (8) is coaxially connected with a worm gear (9). The worm gear (9) meshes with a worm (10). One end of the worm (10) passes through the body (1) to the outside.

2. The food pesticide residue detector according to claim 1, characterized in that, The outer side of the cover (2) is provided with multiple elastic pressure plates (11) corresponding to the position of the channel (3). Sleeves (12) are fixed on both sides of the multiple elastic pressure plates (11). Pressure rods (13) are slidably installed in the two sleeves (12). Sliding rods (14) that slide in the sleeves (12) are fixed below the two ends of the pressure rods (13). An adjusting screw (15) is threaded in the middle of the pressure rods (13). Multiple pressure pads (16) corresponding to the elastic pressure plates (11) are fixed on the lower end face of the pressure rods (13).

3. The food pesticide residue detector according to claim 1, characterized in that, Each of the heating elements (4) is connected to an independent switch (17) placed on the body (1), and a total switch (18) is connected in series with multiple heating elements (4).

4. The food pesticide residue detector according to claim 2, characterized in that, The end of the channel (3) is fixed with an L-shaped downward elastic strip (19) facing the machine cover (2), and the upper end of the channel (3) is provided with an L-shaped upward elastic strip (20) placed inside the elastic pressure plate (11). The upward elastic strip (20) and the downward elastic strip (19) are arranged in a staggered manner.

5. The food pesticide residue detector according to claim 1, characterized in that, The left end of the body (1) is provided with a slide groove (21), and a slider (22) fixed on the slide rod (6) slides up and down in the slide groove (21).

6. The food pesticide residue detector according to claim 1, characterized in that, The machine body (1) has a sliding chamber (23) inside on the right side, and a rack (7), a gear (8), a worm gear (9), and a worm (10) are installed inside the sliding chamber (23).

7. The food pesticide residue detector according to claim 1, characterized in that, The end of the worm (10) is fixed with a worm knob (24).

8. The food pesticide residue detector according to claim 1, characterized in that, The cover (2) is equipped with a lead screw bearing seat (25), and the adjusting lead screw (15) is rotatably installed in the lead screw bearing seat (25). The upper end of the adjusting lead screw (15) is fixed with a lead screw knob (26).

9. A food pesticide residue detector according to claim 1, characterized in that, The body (1) has a built-in display screen (27), the display screen (27) is connected to control buttons (28), the display screen (27) is connected to a controller, and the controller is connected to a built-in power supply.

10. A food pesticide residue detector according to claim 9, characterized in that, A protective buffer pad (29) is provided above the display screen (27) and placed on the cover (2).

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