Oscillating mechanism for pesticide residue detection

Abstract

The utility model discloses an oscillation mechanism for pesticide residue detection, relates to the technical field of oscillation mechanisms, and provides the following scheme aiming at the problems that in the prior art, sample test tubes with different lengths cannot be adapted and the use flexibility is poor: the oscillation mechanism comprises a bottom plate, and a fixed frame is fixed at one end of the top of the bottom plate; first lead screws are rotationally connected to the inner walls of the two ends of the fixing frame correspondingly, supporting mechanisms are connected to the rod walls of the first lead screws in a threaded mode, and rotating mechanisms are arranged below the supporting mechanisms. A first lead screw is rotated to drive a screwed connecting plate to move up and down along a fixing frame, the height of a supporting mechanism is adjusted, a second lead screw is rotated, the rotating second lead screw drives a movable block to move along a connecting frame, a sample test tube is inserted downwards from a limiting ring, the bottom end of the sample test tube is inserted into a placement sleeve, and the sample test tube is placed in the placement sleeve. The sample test tube is kept obliquely placed, and the rotating rod is driven by the servo motor to rotate, so that the whole rotating mechanism is rotated.

Description

Technical Field

[0001] The utility model relates to the technical field of oscillation mechanisms, in particular to an oscillation mechanism for detecting pesticide residues. Background Art

[0002] In the field of food safety, the analysis and detection of pesticide residues in agricultural products is very important. In order to ensure that the toxicity level of pesticide residues in agricultural products is lower than the tolerance value of the human body, and that eating agricultural products containing pesticide residues will not cause harm to the human body, it is necessary to perform routine and comprehensive detection and analysis of pesticide residues in agricultural products. Before the pesticide residue detection, the sample in the sample tube needs to be shaken so that the pesticide residue on the sample is completely dissolved in the solvent in the sample tube to ensure the measurement accuracy.

[0003] The existing pesticide residue detection pre-treatment oscillation device has the following defects when used:

[0004] The existing sample test tube oscillation mechanism cannot adapt to sample test tubes of different lengths and has poor flexibility in use. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides an oscillating mechanism for pesticide residue detection, which overcomes the deficiencies of the prior art and effectively solves the problem that the prior art cannot adapt to sample tubes of different lengths and has poor flexibility in use.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An oscillating mechanism for detecting pesticide residues comprises a base plate, a fixing frame is fixed at one end of the top of the base plate, and the inner walls at both ends of the fixing frame are rotatably connected to first screw rods, the rod wall of the first screw rod is screwed with a supporting mechanism, and a rotating mechanism is arranged below the supporting mechanism, the supporting mechanism comprises a connecting plate, a fixing ring fixed to one end of the connecting plate, a rotating ring rotatably connected to the annular inner wall of the fixing ring, and limiting rings rotatably connected to both sides of the annular inner wall of the rotating ring, the rotating mechanism comprises a connecting frame, a second screw rod rotatably connected to the inner walls at both ends of the connecting frame, a movable block screwed on the rod wall of the second screw rod, fixed blocks fixed to both sides of the top of the movable block, and a placement sleeve rotatably connected between the two fixed blocks.

[0008] The supporting mechanism and the rotating mechanism are adjusted according to the length of the sample test tube. By rotating the first screw rod, the rotating first screw rod drives the threaded connecting plate to move up and down along the fixed frame to adjust the height of the supporting mechanism. Then, by rotating the second screw rod, the rotating second screw rod drives the movable block to move along the connecting frame, and the sample test tube is inserted downward from the limit ring, and the bottom end of the sample test tube is inserted into the placement sleeve at the same time, so that the sample test tube is kept in an inclined position. The output shaft of the servo motor drives the rotating rod to rotate through the mutually meshing gears, and then the entire rotating mechanism is rotated, and the rotating ring rotates in the fixed ring to complete the rotational oscillation of the sample test tube.

[0009] Preferably, a screw hole matched with the first screw rod is opened on the top of the connecting plate, and the connecting plate and the fixing frame form a sliding fit.

[0010] The rotating first screw drives the threaded connecting plate to move up and down along the fixing frame.

[0011] Preferably, protruding rods are fixed on both sides of the annular outer wall of the limiting ring, and the protruding rods are rotatably connected to the annular inner wall of the rotating ring.

[0012] The limiting ring is rotatably connected with the rotating ring through the protruding rod.

[0013] Preferably, a rotating rod is fixed to the bottom of the connecting frame, and the rotating rod is rotatably connected to the top of the bottom plate.

[0014] The rotating mechanism can rotate freely on the top of the base plate through the rotating rod.

[0015] Preferably, a servo motor is provided on one side of the rotating rod, and the output shaft of the servo motor and the rod wall of the rotating rod are both sleeved and fixed with mutually meshing gears.

[0016] The output shaft of the servo motor drives the rotating rod to rotate through mutually meshing gears.

[0017] Preferably, the movable block forms a sliding fit with the connecting frame, and shock-absorbing cotton is placed at the bottom of the placement sleeve.

[0018] The movable block moves along the connecting frame, and the shock-absorbing cotton can protect the bottom end of the sample test tube placed in the sleeve.

[0019] The beneficial effects of the utility model are:

[0020] The first screw rod is driven to drive the threaded connecting plate to move up and down along the fixed frame by rotating the first screw rod, and the height of the supporting mechanism is adjusted. Then, the second screw rod is rotated to drive the movable block to move along the connecting frame, and the sample test tube is inserted downward from the limit ring, and the bottom end of the sample test tube is inserted into the placement sleeve at the same time, so that the sample test tube is kept in an inclined position. The servo motor drives the rotating rod to rotate, and then the entire rotating mechanism is rotated, and the rotating ring rotates in the fixed ring to complete the rotational oscillation of the sample test tube, which effectively solves the problem that the prior art cannot adapt to sample test tubes of different lengths and has poor flexibility in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of an oscillating mechanism for pesticide residue detection proposed by the utility model;

[0022] Figure 2 This is a schematic diagram of the supporting mechanism structure of an oscillating mechanism for pesticide residue detection proposed by the utility model;

[0023] Figure 3 The utility model is a schematic diagram of the rotating mechanism structure of an oscillating mechanism for pesticide residue detection.

[0024] In the figure: 1. bottom plate; 2. fixed frame; 3. first screw rod; 4. supporting mechanism; 5. rotating mechanism; 6. servo motor; 7. connecting plate; 8. fixing ring; 9. rotating ring; 10. limiting ring; 11. connecting frame; 12. rotating rod; 13. second screw rod; 14. movable block; 15. fixed block; 16. placing sleeve. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Example:

[0027] Reference Figure 1-3 , an oscillating mechanism for pesticide residue detection, comprising a bottom plate 1, a fixing frame 2 is fixed to one end of the top of the bottom plate 1, the inner walls of both ends of the fixing frame 2 are rotatably connected to a first screw rod 3, the rod wall of the first screw rod 3 is screwed with a supporting mechanism 4, a rotating mechanism 5 is arranged below the supporting mechanism 4, and the supporting mechanism 4 comprises a connecting plate 7, a fixing ring 8 fixed to one end of the connecting plate 7, a rotating ring 9 rotatably connected to the annular inner wall of the fixing ring 8, and a limiting ring 10 rotatably connected to both sides of the annular inner wall of the rotating ring 9;

[0028] The rotating mechanism 5 includes a connecting frame 11, a second screw rod 13 rotatably connected to the inner walls of both ends of the connecting frame 11, a movable block 14 screwed on the rod wall of the second screw rod 13, fixed blocks 15 fixed to both sides of the top of the movable block 14, and a placement sleeve 16 rotatably connected between the two fixed blocks 15;

[0029] A screw hole adapted to the first screw rod 3 is provided on the top of the connecting plate 7, and the connecting plate 7 forms a sliding fit with the fixing frame 2. The rotating first screw rod 3 drives the screwed connecting plate 7 to move up and down along the fixing frame 2. Both sides of the annular outer wall of the limiting ring 10 are fixed with convex rods, which are rotatably connected to the annular inner wall of the rotating ring 9. The limiting ring 10 is rotatably connected to the rotating ring 9 through the convex rods.

[0030] A rotating rod 12 is fixed to the bottom of the connecting frame 11, and the rotating rod 12 is rotatably connected to the top of the bottom plate 1. The rotating mechanism 5 can rotate freely on the top of the bottom plate 1 through the rotating rod 12. A servo motor 6 is arranged on one side of the rotating rod 12. The output shaft of the servo motor 6 and the rod wall of the rotating rod 12 are both sleeved and fixed with mutually meshing gears. The output shaft of the servo motor 6 drives the rotating rod 12 to rotate through the mutually meshing gears. The movable block 14 forms a sliding fit with the connecting frame 11. Shock-absorbing cotton is placed at the bottom of the placement sleeve 16. The movable block 14 moves along the connecting frame 11, and the shock-absorbing cotton can protect the bottom end of the sample test tube in the placement sleeve 16.

[0031] Working principle:

[0032] During operation, the support mechanism 4 and the rotating mechanism 5 are adjusted according to the length of the sample test tube. By rotating the first screw rod 3, the rotating first screw rod 3 drives the threaded connecting plate 7 to move up and down along the fixed frame 2 to adjust the height of the support mechanism 4. Then, by rotating the second screw rod 13, the rotating second screw rod 13 drives the movable block 14 to move along the connecting frame 11, and the sample test tube is inserted downward from the limit ring 10, and the bottom end of the sample test tube is inserted into the placement sleeve 16, so that the sample test tube is kept in an inclined position. The output shaft of the servo motor 6 drives the rotating rod 12 to rotate through the mutually meshing gears, and then the entire rotating mechanism 5 is rotated, and the rotating ring 9 rotates in the fixed ring 8 to complete the rotational oscillation of the sample test tube.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An oscillating mechanism for pesticide residue detection, comprising a bottom plate (1), characterized in that: A fixing frame (2) is fixed at one end of the top of the bottom plate (1), and the inner walls at both ends of the fixing frame (2) are both rotatably connected to a first screw rod (3), the rod wall of the first screw rod (3) is screwed to a support mechanism (4), and a rotating mechanism (5) is arranged below the support mechanism (4), the supporting mechanism (4) comprises a connecting plate (7), a fixing ring (8) fixed to one end of the connecting plate (7), a rotating ring (9) rotatably connected to the annular inner wall of the fixing ring (8), and a limiting ring (10) rotatably connected to both sides of the annular inner wall of the rotating ring (9), and the rotating mechanism (5) comprises a connecting frame (11), a second screw rod (13) rotatably connected to the inner walls at both ends of the connecting frame (11), a movable block (14) screwed to the rod wall of the second screw rod (13), a fixing block (15) fixed to both sides of the top of the movable block (14), and a placement sleeve (16) rotatably connected between the two fixing blocks (15).

2. The oscillating mechanism for pesticide residue detection according to claim 1, characterized in that: A screw hole matching the first screw rod (3) is provided on the top of the connecting plate (7), and the connecting plate (7) and the fixing frame (2) form a sliding fit.

3. The oscillating mechanism for pesticide residue detection according to claim 1, characterized in that: Lugs are fixed on both sides of the annular outer wall of the limiting ring (10), and the lugs are rotatably connected to the annular inner wall of the rotating ring (9).

4. The oscillating mechanism for pesticide residue detection according to claim 1, characterized in that: A rotating rod (12) is fixed to the bottom of the connecting frame (11), and the rotating rod (12) is rotatably connected to the top of the bottom plate (1).

5. The oscillating mechanism for pesticide residue detection according to claim 4, characterized in that: A servo motor (6) is provided on one side of the rotating rod (12), and the output shaft of the servo motor (6) and the rod wall of the rotating rod (12) are both sleeved and fixed with mutually meshing gears.

6. The oscillating mechanism for pesticide residue detection according to claim 1, characterized in that: The movable block (14) forms a sliding fit with the connecting frame (11), and shock-absorbing cotton is placed at the bottom of the placement sleeve (16).

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