Food pesticide residue inspection instrument

Abstract

The utility model discloses a food pesticide residue inspection instrument, which comprises a test tube rack, a detection device and a control device, a plurality of through holes for fixing test tubes are formed in the swinging plate, and a rotating rod rotationally connected with the test tube rack is arranged at the end part of the swinging plate; the driving structure can drive the plurality of swinging plates to synchronously swing by taking the rotating rods of the swinging plates as shafts; the limiting structure can enable the tube opening of the test tube to face upwards all the time; the test tube rack is separably arranged at the top of the base and is provided with an avoiding space for avoiding swinging of a plurality of test tubes. Compared with the prior art, the steps of taking and placing the test tubes one by one and shaking the test tubes one by one are omitted, so that the labor intensity during operation is reduced, the test tube shaking efficiency is improved, and the test tube shaking device is particularly suitable for batch detection work; the situation that individual test tubes are not shaken in the shaking step is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of food pesticide residue testing instruments, in particular to a food pesticide residue testing instrument. Background Art

[0002] In the prior art, the inspection of pesticide residues in food generally includes the following steps: (1) a sampling instrument acts on the sample to be tested, separates some fragments and puts them into a test tube, and drips reagents; (2) an oscillating instrument acts on the test tube containing the sample fragments and the reagents; (3) the mixture is shaken and kept still; and (4) a spectrometer detects the mixture in the test tube. Step (3) is all manually shaken, and the operator needs to repeatedly remove the test tubes from the sample rack, shake them one by one, and put them back on the sample rack one by one. This method has the following disadvantages: easy fatigue, omissions in the same batch, and low operating efficiency. Utility Model Content

[0003] In order to overcome the shortcomings and deficiencies in the prior art, the utility model aims to provide a food pesticide residue testing instrument.

[0004] To achieve the above purpose, the technical solution of the utility model is as follows:

[0005] A food pesticide residue testing instrument, comprising:

[0006] A test tube rack having a plurality of hollow slots with upper and lower openings;

[0007] The swing plate is provided with a plurality of through holes for fixing the test tubes, which correspond to the plurality of hollow grooves one by one, and the end thereof is provided with a rotating rod rotatably connected to the test tube rack;

[0008] A driving structure, acting on the plurality of rotating rods, can drive the plurality of swing plates to swing synchronously with the rotating rods thereof as axes;

[0009] A limiting structure, acting on the swing plate, can ensure that the mouth of the test tube is always facing upward;

[0010] The support frame is detachably arranged on the top of the base and has an escape space for accommodating a plurality of test tubes from swinging.

[0011] Preferably, the driving structure comprises:

[0012] The test tube rack is provided with a slide groove that is slidably matched with the rack, the rotating rod is inserted into the slide groove at the end away from the swing plate, and the end of the rotating rod is provided with a driven gear that meshes with the rack for transmission;

[0013] The driving rod is rotatably arranged on the test tube rack, the inner end of which penetrates into the slide groove, and the terminal end of which is provided with a driving gear meshing with the rack for transmission.

[0014] Preferably, it also includes:

[0015] The handle has a connection end which is detachably fixed to the outer end of the driving rod and can drive the driving rod to rotate clockwise or counterclockwise.

[0016] Preferably, it also includes:

[0017] A hexagon socket coaxially disposed at the outer end of the driving rod;

[0018] A hexagonal columnar body is arranged at the connecting end of the handle and is matched with the hexagonal socket.

[0019] Preferably, it also includes:

[0020] The dustproof strip can cover the slide groove.

[0021] Preferably, it also includes:

[0022] at least one pair of clamping pieces, disposed in the through hole, acting on the test tube;

[0023] The elastic component is arranged in the through hole, acts on the clamping piece, and can continuously provide the clamping piece with an elastic force for closing inwards.

[0024] Preferably, it also includes:

[0025] A guide rod, arranged on the outer side of the clamping sheet along the radial direction of the through hole;

[0026] The guide groove is slidably matched with the guide rod, and the elastic component is a spring sleeved on the guide rod.

[0027] Preferably, the limiting structure includes:

[0028] A first limiting groove is formed on the inner wall of the hollow groove;

[0029] A first abutting block is disposed at the right side of the end of the swing plate, and when abutting against the bottom wall of the first limiting groove, the swing plate and the test tube rack form a certain angle and can limit the swing plate from swinging to the right;

[0030] A second limiting groove is formed on the inner wall of the hollow groove;

[0031] The second abutting block is arranged at the left side of the end of the swing plate, and when it abuts against the bottom wall of the second limiting groove, the swing plate and the test tube rack are parallel to each other and can limit the swing plate from swinging to the left.

[0032] Preferably, the angle is 25°-45°.

[0033] Preferably, it also includes:

[0034] The suction cup is arranged at the bottom of the support frame and acts on the external bearing surface.

[0035] The beneficial effects of the utility model are as follows: several test tubes containing sample fragments and reagents to be tested are fixed on the swinging plate through perforations respectively, and the driving structure is used to drive multiple swinging plates to swing synchronously relative to the test tube rack, so as to achieve the effect of synchronous shaking of multiple test tubes, and the limiting structure is used to act on the swinging plate to make the tube mouth of the test tube always face upward, thereby reducing the splashing of sample fragments and reagents during the shaking process, and the test tube rack is used to use a detachable fixing method. After the test tubes in the batch are shaken evenly, the batches can be removed, which is convenient for cooperation with the subsequent spectrometer. Compared with the prior art, the present application saves the steps of taking and placing test tubes one by one, and shaking them one by one, which is conducive to reducing the labor during the operation and improving the efficiency of shaking the test tubes. It is particularly suitable for batch detection work. On the other hand, the driving structure synchronously drives multiple swinging plates to swing, which is conducive to reducing the situation where individual test tubes are not shaken during the shaking step. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0037] Figure 2 It is an exploded view of the components of the embodiment of the utility model;

[0038] Figure 3 This is an exploded view of a test tube rack in an embodiment of the present utility model;

[0039] Figure 4 This is one of the schematic diagrams for use in the embodiment of the present utility model;

[0040] Figure 5 This is the second schematic diagram of the embodiment of the present invention.

[0041] As shown in the figure:

[0042] 1-test tube rack, 11-hollow slot, 12-swing plate, 121-perforation, 1211-clamping sheet, 1212-guide rod, 122-rotating rod, 1221-driven gear, 13-slideway, 131-dustproof strip;

[0043] 2-driving structure, 21-rack, 22-driving rod, 221-driving gear, 222-hexagon socket, 23-handle, 231-hexagonal column;

[0044] 3-limiting structure, 31-first limiting groove, 32-first abutting block, 33-second limiting groove, 34-second abutting block;

[0045] 4-support frame, 41-avoidance space, 42-suction cup;

[0046] 5- Test tube.

[0047] Elastic components - not shown in the figure DETAILED DESCRIPTION

[0048] The following is a detailed explanation of the implementation of the present invention in conjunction with the accompanying drawings. The accompanying drawings are for reference and illustration only and do not constitute a limitation on the scope of patent protection of the present invention.

[0049] See also Figure 1-Figure 5 In this embodiment, a food pesticide residue testing instrument includes:

[0050] The test tube rack 1 is provided with a plurality of hollow slots 11 with upper and lower openings;

[0051] The swing plate 12 is provided with a plurality of through holes 121 for fixing the test tubes 5, which correspond to the plurality of hollow grooves 11 one by one, and a rotating rod 122 rotatably connected to the test tube rack 1 is provided at the end thereof;

[0052] The driving structure 2 acts on the plurality of rotating rods 122 and can drive the plurality of swing plates 12 to swing synchronously with the rotating rods 122 thereof as axes;

[0053] The limiting structure 3 acts on the swing plate 12 to ensure that the mouth of the test tube 5 is always facing upwards;

[0054] The support frame 4, the test tube rack 1 is detachably arranged on the top of the base, and has an avoidance space 41 for avoiding the swing of a plurality of test tubes 5.

[0055] In this embodiment, there are four swing plates 12, and four through holes 121 are opened on a single swing plate 12. The four hollow grooves 11 are arranged at equal intervals along the length direction of the test tube rack 1, so as to realize the shaking of 4*4 test tubes 5; the 16 test tubes 5 containing sample fragments and reagents to be tested are fixed on the swing plate 12 through the through holes 121 respectively, and the driving structure 2 is used to drive the four swing plates 12 to swing synchronously relative to the test tube rack 1, so as to realize the effect of synchronous shaking of the 16 test tubes 5, and the limiting structure 3 is used to act on the swing plate 12 to make the tube mouths of the 16 test tubes 5 always face upward, so as to reduce the splashing of sample fragments and reagents during the shaking process, and the detachable fixing method of the test tube rack 1 is used to realize batch removal after the test tubes 5 in this batch are shaken evenly, so as to facilitate the cooperation with the subsequent spectrometer. The working principle of this embodiment is: by adjusting the angle between the test tube 5 and the test tube rack 1, the reagent inside is fully mixed with the fragments of the sample to be tested. Specifically, first, the driving structure 2 drives the four swinging plates 12 to swing leftward relative to the test tube rack 1, so that the 16 test tubes 5 are tilted relative to the test tube rack 1, and then the driving structure 2 drives the four swinging plates 12 to swing rightward relative to the test tube rack 1 to reset, and the cycle is repeated in sequence. The number of reciprocating swings is about 10-20 times, which can be adjusted according to the actual situation (type of sample to be tested).

[0056] In this embodiment, a notch is provided at the top of the support frame 4 for accommodating the test tube 5 , a clamping strip is provided upwardly around the notch, and a clamping groove cooperating with the clamping strip is provided at the bottom of the test tube rack 1 .

[0057] Preferably, the driving structure 2 comprises:

[0058] The rack 21, the test tube rack 1 is provided with a slide groove 13 that is slidably matched with the rack 21, the rotating rod 122 is inserted into the slide groove 13 at the end away from the swing plate 12, and the end thereof is provided with a driven gear 1221 that meshes with the rack 21 for transmission;

[0059] The driving rod 22 is rotatably disposed on the test tube rack 1 , with its inner end inserted into the slide slot 13 , and its distal end is provided with a driving gear 221 meshing with the rack 21 for transmission.

[0060] In this embodiment, the linear reciprocating sliding of the rack 21 is utilized to drive the four driven gears 1221 to rotate synchronously clockwise or counterclockwise. Specifically, the operator needs to control the driving rod 22 to rotate around its own axis, and further utilize the resistance feedback of the limiting structure 3 to change the rotation direction. On the other hand, the manual drive is more controllable, which is conducive to controlling the number and speed of shaking.

[0061] Preferably, it also includes:

[0062] The handle 23 has a connection end which is detachably fixed to the outer end of the driving rod 22 and can drive the driving rod 22 to rotate clockwise or counterclockwise.

[0063] In this embodiment, the handle 23 includes a first horizontal section, a vertical section and a second horizontal section that are connected. The first horizontal section is detachably connected to the driving rod 22, and the second horizontal section is the force application point of the operator. Furthermore, a rotatable sleeve is provided on the second horizontal section to facilitate the turning of the handle 23. Furthermore, a storage groove for storing the handle 23 is provided on the support frame 4, which can prevent the handle 23 from being lost during spectral analysis.

[0064] Preferably, it also includes:

[0065] An inner hexagon socket 222 is coaxially disposed at the outer end of the driving rod 22;

[0066] The hexagonal columnar body 231 is provided at the connection end of the handle 23 and is adapted to the hexagonal socket 222. The multi-edge plug-in method is used to prevent the handle 23 from rotating relative to the driving rod 22 during rotation, and the structure is simple and easy to disassemble and assemble.

[0067] Preferably, it also includes:

[0068] The dustproof strip 131 can cover the slide slot 13 .

[0069] In this embodiment, the dustproof strip 131 is arranged along the length direction of the slide groove 13, and is used to cover the driven gear 1221, the rack 21 and the driving gear 221 located in the slide groove 13, thereby reducing the transmission problems caused by external impurities and dust adhering to the rack 21 or the gear.

[0070] Preferably, it also includes:

[0071] At least one pair of clamping pieces 1211, disposed in the through hole 121, acting on the test tube 5;

[0072] The elastic component (not shown in the figure) is disposed in the through hole 121 , acts on the clamping piece 1211 , and can continuously provide the clamping piece 1211 with an elastic force to close inwards.

[0073] In the present embodiment, there are two pairs of clamping pieces 1211, and a single clamping piece 1211 is in the form of a 1 / 4 arc-shaped petal, which reduces the possibility of the test tube 5 falling off relative to the swing plate 12 during shaking. An elastic component (not shown in the figure) is used to act on the clamping piece 1211, so that it has a certain opening and closing range. On the one hand, it can adapt to test tubes 5 with more diameters, and on the other hand, it can avoid the test tube 5 from being broken due to the rigid clamping force acting on the test tube 5.

[0074] Preferably, it also includes:

[0075] A guide rod 1212 is arranged on the outer side of the clamping piece 1211 along the radial direction of the through hole 121;

[0076] The guide groove is slidably matched with the guide rod 1212, and the elastic component (not shown in the figure) is a spring sleeved on the guide rod 1212. The structure is simple and easy to manufacture.

[0077] Preferably, the limiting structure 3 includes:

[0078] A first limiting groove 31 is formed on the inner wall of the hollow groove 11;

[0079] The first abutting block 32 is disposed at the right side of the end of the swing plate 12. When it abuts against the bottom wall of the first limiting groove 31, the swing plate 12 and the test tube rack 1 form a certain angle and can limit the swing plate 12 from swinging to the right.

[0080] A second limiting groove 33 is formed on the inner wall of the hollow groove 11;

[0081] The second abutting block 34 is disposed at the left side of the end of the swing plate 12 , and when abutting against the bottom wall of the second limiting groove 33 , the swing plate 12 and the test tube rack 1 are parallel to each other and can limit the swing plate 12 from swinging leftward.

[0082] In this embodiment, the first abutting block 32 and the second abutting block 34 are symmetrically arranged on the swing plate 12 with the rotating rod 122 as the symmetry axis. Specifically, the tops of the first limiting groove 31 and the second limiting groove 33 respectively pass through the test tube rack 1, and the distance H1 between the bottom wall of the first limiting groove 31 and the bottom wall of the test tube rack 1 is greater than the distance H2 between the bottom wall of the second limiting groove 33 and the bottom wall of the test tube rack 1. By using the above technical solution, the maximum swing angle of the test tube 5 can be controlled to reduce the dumping of the material in the tube, and the first abutting block 32 is contacted with the first limiting groove 31 to give feedback to the operator, and the second abutting block 34 is contacted with the second limiting groove 33 to give feedback to the operator, so that the operator can clearly know whether to turn the handle 23 clockwise or counterclockwise.

[0083] Preferably, the angle is 25°-45°. The maximum swing angle of this embodiment is 30°.

[0084] Preferably, it also includes:

[0085] The suction cup 42 is disposed at the bottom of the support frame 4 and acts on the external bearing surface.

[0086] In this embodiment, the external bearing surface is the table top of the operating table, and the suction cup 42 is used to fix or detach the support frame 4.

[0087] The above disclosure is only a preferred embodiment of the present invention, which cannot be used to limit the scope of protection of the present invention. Therefore, equivalent changes made within the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A food pesticide residue testing instrument, characterized in that: include: A test tube rack having a plurality of hollow slots with upper and lower openings; The swing plate is provided with a plurality of through holes for fixing the test tubes, which correspond to the plurality of hollow grooves one by one, and the end thereof is provided with a rotating rod rotatably connected to the test tube rack; A driving structure, acting on the plurality of rotating rods, can drive the plurality of swing plates to swing synchronously with the rotating rods thereof as axes; A limiting structure, acting on the swing plate, can ensure that the mouth of the test tube is always facing upward; The support frame is detachably arranged on the top of the base and has an escape space for accommodating a plurality of test tubes from swinging.

2. A food pesticide residue testing instrument according to claim 1, characterized in that: The driving structure comprises: The test tube rack is provided with a slide groove that is slidably matched with the rack, the rotating rod is inserted into the slide groove at the end away from the swing plate, and the end of the rotating rod is provided with a driven gear that meshes with the rack for transmission; The driving rod is rotatably arranged on the test tube rack, the inner end of which penetrates into the slide groove, and the terminal end of which is provided with a driving gear meshing with the rack for transmission.

3. A food pesticide residue testing instrument according to claim 2, characterized in that: Also includes: The handle has a connection end which is detachably fixed to the outer end of the driving rod and can drive the driving rod to rotate clockwise or counterclockwise.

4. A food pesticide residue testing instrument according to claim 3, characterized in that: Also includes: A hexagon socket coaxially disposed at the outer end of the driving rod; A hexagonal columnar body is arranged at the connecting end of the handle and is matched with the hexagonal socket.

5. A food pesticide residue testing instrument according to claim 2, characterized in that: Also includes: The dustproof strip can cover the slide groove.

6. The food pesticide residue testing instrument according to claim 1, characterized in that: Also includes: at least one pair of clamping pieces, disposed in the through hole, acting on the test tube; The elastic component is arranged in the through hole, acts on the clamping piece, and can continuously provide the clamping piece with an elastic force for closing inwards.

7. A food pesticide residue testing instrument according to claim 6, characterized in that: Also includes: A guide rod, arranged on the outer side of the clamping sheet along the radial direction of the through hole; The guide groove is slidably matched with the guide rod, and the elastic component is a spring sleeved on the guide rod.

8. The food pesticide residue testing instrument according to claim 1, characterized in that: The limiting structure comprises: A first limiting groove is formed on the inner wall of the hollow groove; A first abutting block is disposed at the right side of the end of the swing plate, and when abutting against the bottom wall of the first limiting groove, the swing plate and the test tube rack form a certain angle and can limit the swing plate from swinging to the right; A second limiting groove is formed on the inner wall of the hollow groove; The second abutting block is arranged at the left side of the end of the swing plate, and when it abuts against the bottom wall of the second limiting groove, the swing plate and the test tube rack are parallel to each other and can limit the swing plate from swinging to the left.

9. The food pesticide residue testing instrument according to claim 8, characterized in that: The angle is 25°-45°.

10. The food pesticide residue testing instrument according to claim 1, characterized in that: Also includes: The suction cup is arranged at the bottom of the support frame and acts on the external bearing surface.

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