A liquid transfer device for food testing

Abstract

The invention discloses a liquid transfer device for food detection, comprising a base, a fixed frame is provided at the upper end of the base, a rotating device is provided at one side of the upper end of the fixed frame, a liquid transfer device is provided at the lower end of the rotating device, a raw liquid tank is provided below the liquid transfer device and at the upper end of the base, a detection box is provided at one side of the raw liquid tank and at the upper end of the base, wherein the rotating device comprises a support frame, and the support frame is located at one side of the fixed frame and at the upper end of the base, a movable shaft one is inserted through the upper end of the support frame, a motor one is provided at one end of the movable shaft one, a movable ring is provided on the movable shaft one and between the fixed frame and the support frame, a fixed ring is sleeved on the outer side of the movable ring, a connecting rod one is provided at one side of the fixed ring, an end of the connecting rod one away from the fixed ring is movably connected to one end of a connecting rod two, the other end of the connecting rod two is connected to one side of the upper end of the fixed frame through a movable shaft two, and a connecting rod three is provided at one end of the movable shaft two away from the connecting rod two and at one side of the fixed frame.

Description

Technical Field

[0001] The present invention relates to the field of food detection, in particular to a liquid transfer device for food detection. Background Art

[0002] At present, when testing food, sometimes it is necessary to add food solution into a reaction tube to react in order to detect food ingredients, and sometimes the amount of food solution extracted is very high, trace, and precise. At this time, a micropipette is needed to extract a more precise volume of food solution, so that the detection is more reliable and the reaction is more complete.

[0003] The existing ones have the following deficiencies and problems:

[0004] (1) Currently, many manually controlled pipettes on the market require manual pressing to absorb and discharge the test liquid. Long-term pressing operation can easily cause hand discomfort or injury;

[0005] (2) The test liquid in the original liquid box needs to be moved into the test box manually. Manual operation is unstable and may cause dripping during the pipetting process, resulting in inaccurate data. Summary of the invention

[0006] The technical task of the present invention is to provide a liquid transfer device for food testing in view of the above shortcomings, so as to solve the problems raised by the above background technology.

[0007] The technical solution of the present invention is achieved in this way:

[0008] A liquid transfer device for food testing, comprising a base, a fixed frame is provided at the upper end of the base, a rotating device is provided at one side of the upper end of the fixed frame, a liquid transfer device is provided at the lower end of the rotating device, a raw liquid tank is provided below the liquid transfer device and at the upper end of the base, a detection box is provided at one side of the raw liquid tank and at the upper end of the base, wherein the rotating device comprises a support frame, and the support frame is located at one side of the fixed frame and at the upper end of the base, a movable shaft 1 is inserted at the upper end of the support frame, a motor 1 is provided at one end of the movable shaft 1, and a motor 1 is provided on the movable shaft 1 and at the fixed frame A movable ring is provided between the frame and the supporting frame, a fixed ring is sleeved on the outer side of the movable ring, a connecting rod 1 is provided on one side of the fixed ring, an end of the connecting rod 1 away from the fixed ring is movably connected to one end of a connecting rod 2, the other end of the connecting rod 2 is connected to one side of the upper end of the fixed frame through a movable shaft 2, a connecting rod 3 is provided on one side of the movable shaft 2 away from one end of the connecting rod 2 and located on the fixed frame, a connecting rod 4 is provided on the other side of the upper end of the fixed frame, a movable rod is provided between the connecting rod 3 and the connecting rod 4, and the bottom middle position of the movable rod is connected to the upper end of the pipetting device.

[0009] Preferably, the movable shaft one passes through the support frame, the movable ring, the fixed frame and the connecting rod four in sequence.

[0010] Preferably, bearings are provided at the connection points between the fixing frame and the second movable shaft, and between the first movable shaft and the fixing frame and the supporting frame.

[0011] Preferably, the connecting rod 1 and the connecting rod 2 are movably connected via a rotating shaft 1, and the movable rod and the connecting rod 3 and the connecting rod 4 are movably connected via a rotating shaft 2.

[0012] Preferably, the pipetting device includes a fixed cylinder, the upper end of which is connected to the movable rod, and the interior of the fixed cylinder is respectively provided with a partition 1 and a partition 2, a squeezing device is provided between the partition 1 and the partition 2 and located inside the fixed cylinder, a motor 2 is provided at the upper end of the partition 1 and located inside the fixed cylinder, and a connecting tube is provided at the lower end of the partition 2, the connecting tube passes through the lower end of the fixed cylinder, and one end of the connecting tube is connected to the upper end of the pipette.

[0013] Preferably, the upper end of the fixing cylinder is connected to the movable rod via two sets of bolts.

[0014] Preferably, the extrusion device includes a rotating block, the upper end center of the rotating block is connected to the output shaft of the motor two through a movable shaft three, a plurality of limit blocks are provided at the lower end of the rotating block, an extrusion block is provided below the rotating block, the extrusion block is located on the inner side of the sealing chamber, and the sealing chamber is located at the upper end of the partition two.

[0015] Preferably, four groups of clamping blocks are provided on the outer side of the extrusion block, and four groups of grooves are opened at the lower end of the extrusion block.

[0016] Preferably, one side of the limit block is in an arc-shaped structure, and the limit block cooperates with the upper end of the clamping block.

[0017] Preferably, a limiting groove cooperating with the extrusion block is provided on the inner side of the sealing chamber, four groups of grooves 2 and one group of through holes are respectively provided at the bottom of the limiting groove, springs are provided between the four groups of grooves 1 and the four groups of grooves 2, and the through holes are connected to one end of the connecting pipe, and four groups of card grooves cooperating with the card block are provided on the outer side of the limiting groove.

[0018] Beneficial effects of the present invention:

[0019] 1. The rotating device drives the pipetting device to rise or fall, and moves the pipetting device from the original liquid box to the detection box to achieve the purpose of micro-liquid suction and discharge, and automatically sucks and discharges the solution without dripping;

[0020] 2. The present invention controls the aspiration and discharge of the pipette by driving the squeezing device, and the aspiration or discharge operation can be stopped at any time, so that the aspiration and discharge of the solution is more accurate, air will not be sucked in, and food detection is more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 is a schematic structural diagram of a liquid transfer device for food testing according to an embodiment of the present invention;

[0023] Figure 2 is a schematic structural diagram of a rotating device according to an embodiment of the present invention;

[0024] Figure 3 is a schematic structural diagram of a liquid transfer device according to an embodiment of the present invention;

[0025] Figure 4 is a schematic structural diagram of an extrusion device according to an embodiment of the present invention;

[0026] Figure 5 is an exploded view of an extrusion device according to an embodiment of the present invention.

[0027] In the figure:

[0028] 1. Base; 2. Fixed frame; 3. Rotating device; 4. Liquid transfer device; 5. Original liquid box; 6. Detection box; 7. Support frame; 8. Active shaft one; 9. Motor one; 10. Active ring; 11. Fixed ring; 12. Connecting rod one; 13. Connecting rod two; 14. Active shaft two; 15. Connecting rod three; 16. Connecting rod four; 17. Active rod; 18. Rotating shaft one; 19. Rotating shaft two; 20. Fixed cylinder; 21. Partition one; 22. Partition two; 23. Extrusion device; 24. Motor two; 25. Connecting tube; 26. Pipette; 27. Bolt; 28. Rotating block; 29. ​​Active shaft three; 30. Extrusion block; 31. Sealing chamber; 32. Block; 33. Groove one; 34. Limiting groove; 35. Groove two; 36. Through hole; 37. Spring; 38. Slot; 39. Limiting block. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] Examples, such as Figure 1-2As shown, a liquid transfer device for food detection according to an embodiment of the present invention comprises a base 1, a fixed frame 2 is provided at the upper end of the base 1, a rotating device 3 is provided at one side of the upper end of the fixed frame 2, a liquid transfer device 4 is provided at the lower end of the rotating device 3, a raw liquid tank 5 is provided below the liquid transfer device 4 and at the upper end of the base 1, a detection box 6 is provided at one side of the raw liquid tank 5 and at the upper end of the base 1, wherein the rotating device 3 comprises a support frame 7, and the support frame 7 is located at one side of the fixed frame 2 and at the upper end of the base 1, a movable shaft 8 is inserted at the upper end of the support frame 7, a motor 9 is provided at one end of the movable shaft 8, and a motor 9 is provided on the movable shaft 8 and at the connection between the fixed frame 2 and the support frame 6. A movable ring 10 is provided between the supports 7, a fixed ring 11 is sleeved on the outer side of the movable ring 10, a connecting rod 12 is provided on one side of the fixed ring 11, one end of the connecting rod 12 away from the fixed ring 11 is movably connected to one end of a connecting rod 2 13, the other end of the connecting rod 2 13 is connected to one side of the upper end of the fixed frame 2 through a movable shaft 2 14, a connecting rod 3 15 is provided on one side of the fixed frame 2 away from one end of the movable shaft 2 14, a connecting rod 4 16 is provided on the other side of the upper end of the fixed frame 2, a movable rod 17 is provided between the connecting rod 3 15 and the connecting rod 4 16, and the bottom middle position of the movable rod 17 is connected to the upper end of the pipetting device 4.

[0031] Specifically, the movable shaft 18 passes through the support frame 7, the movable ring 10, the fixed frame 2 and the connecting rod 4 16 in sequence, so that the rotation of the movable shaft 18 can drive the movable ring 10 and the connecting rod 4 16 to move, and bearings are provided at the connection between the fixed frame 2 and the movable shaft 2 14, and between the movable shaft 18 and the fixed frame 2 and the support frame 7, so that the rotation of the movable shaft 18 and the movable shaft 2 14 is more stable.

[0032] Specifically, the connecting rod 12 and the connecting rod 2 13 are movably connected via a rotating shaft 18 , and the movable rod 17 and the connecting rod 3 15 and the connecting rod 4 16 are movably connected via a rotating shaft 2 19 .

[0033] The structure and function of the liquid transfer device 4 are described in detail below.

[0034] like Figure 3 As shown, the pipetting device 4 includes a fixed cylinder 20, the upper end of which is connected to the movable rod 17, and a partition 1 21 and a partition 2 22 are respectively provided inside the fixed cylinder 20, and an extrusion device 23 is provided between the partition 1 21 and the partition 2 22 and located inside the fixed cylinder 20, and a motor 2 24 is provided at the upper end of the partition 1 21 and located inside the fixed cylinder 20, and a connecting tube 25 is provided at the lower end of the partition 22, and the connecting tube 25 passes through the lower end of the fixed cylinder 20, and one end of the connecting tube 25 is connected to the upper end of the pipette 26, and the upper end of the fixed cylinder 20 is connected to the movable rod 17 by two sets of bolts 27, and the suction and discharge of the liquid are completed by the extrusion device 23.

[0035] The structure and function of the extrusion device 23 are described in detail below.

[0036] like Figure 4-5 As shown, the extrusion device 23 includes a rotating block 28, the upper end center of the rotating block 28 is connected to the output shaft of the motor 24 through a movable shaft 3 29, a plurality of limit blocks 39 are provided at the lower end of the rotating block 28, an extrusion block 30 is provided below the rotating block 28, the extrusion block 30 is located on the inner side of the sealing chamber 31, and the sealing chamber 31 is located at the upper end of the partition 22.

[0037] Specifically, four groups of clamping blocks 32 are provided on the outer side of the extrusion block 30, and four groups of grooves 33 are opened at the lower end of the extrusion block 30. One side of the limit block 39 is an arc-shaped structure, and the limit block 39 cooperates with the upper end of the clamping block 32, so that the rotational movement of the limit block 39 can drive the extrusion block 30 to move up and down.

[0038] Specifically, a limiting groove 34 cooperating with the extrusion block 30 is provided on the inner side of the sealing chamber 31, four groups of grooves 2 35 and one group of through holes 36 are respectively opened at the bottom of the limiting groove 34, springs 37 are provided between the four groups of grooves 1 33 and the four groups of grooves 2 35, and the through holes 36 are connected to one end of the connecting pipe 25, and four groups of card grooves 38 cooperating with the card block 32 are provided on the outer side of the limiting groove 34.

[0039] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation mode of the present invention in the actual process is described in detail below.

[0040] In actual application: when it is necessary to test the liquid in the stock liquid box 5, the rotating device 3 drives the pipetting device 4 to move from the stock liquid box 5 to the detection box 6 to complete the test, and then the motor 19 drives the movable shaft 18 to rotate, so that the movable shaft 18 drives the movable ring 10 and the connecting rod 4 16 to move, and then the movable ring 10 drives the fixed ring 11 to move, so that the fixed ring 11 drives the connecting rod 12 to move, so that the connecting rod 12 drives the connecting rod 2 13 to move, and then the connecting rod 2 13 drives the movable shaft 2 14 to rotate, so that the other end of the movable shaft 2 14 drives the connecting rod 3 15 to rotate, and then the connecting rod 3 15 and the connecting rod 4 16 drive the movable rod 17 to rotate. Therefore, the movable rod 17 drives the pipetting device 4 to move from the stock liquid box 5 to the detection box 6, and the pipette 26 leaves the stock liquid. When the piston 24 is in the detection box 5, the liquid is taken out, and when the pipette 26 reaches the detection box 6, the liquid is discharged. The motor 24 drives the movable shaft 3 29 to rotate, so that the movable shaft 3 29 drives the rotating block 28 to move, and then the rotating block 28 drives the limit block 39 at the lower end to move. When the limit block 39 contacts the upper end of the card block 32, the limit block 39 drives the extrusion block 30 to move downward, and then the groove 33 at the lower end of the extrusion block 30 squeezes the spring 37 downward, so that the card block 32 contacts the card groove 38, and the upper end of the sealing chamber 31 is sealed. Therefore, the up and down movement of the extrusion block 30 causes the pressure of the sealing chamber 31 to change. When the extrusion block 30 moves upward, the pipette 26 absorbs liquid from the original liquid box 5, and when the extrusion block 30 moves downward, the liquid in the pipette 26 is discharged into the detection box 6.

[0041] To sum up, with the help of the above-mentioned technical scheme of the present invention, the rotating device 3 drives the pipetting device 4 to rise or fall, and moves the pipetting device 4 from the original liquid box 5 to the detection box 6, so as to achieve the purpose of micro-amount of liquid suction and discharge, and automatically suck and discharge the solution without dripping; the present invention controls the suction and discharge of the pipette 26 by driving the extrusion device 23, and can stop the suction or discharge operation at any time, so that the suction and discharge of the solution is more accurate, air will not be sucked in, and food detection is more reliable.

[0042] Through the above specific implementations, those skilled in the art can easily implement the present invention. However, it should be understood that the present invention is not limited to the above specific implementations. On the basis of the disclosed implementations, those skilled in the art can arbitrarily combine different technical features to achieve different technical solutions.

Claims

1. A liquid transfer device for food testing, characterized in that: The invention comprises a base (1), wherein a fixed frame (2) is provided at the upper end of the base (1), a rotating device (3) is provided at one side of the upper end of the fixed frame (2), a liquid transfer device (4) is provided at the lower end of the rotating device (3), a raw liquid tank (5) is provided below the liquid transfer device (4) and located at the upper end of the base (1), a detection box (6) is provided at one side of the raw liquid tank (5) and located at the upper end of the base (1), wherein the rotating device (3) comprises a support frame (7), and the support frame (7) is located at one side of the fixed frame (2) and at the upper end of the base (1), a movable shaft (8) is inserted at the upper end of the support frame (7), a motor (9) is provided at one end of the movable shaft (8), and the movable shaft (8) is provided with a motor (9), and the movable shaft (8) is provided with a motor (9) at one end thereof. A movable ring (10) is provided on the movable shaft (8) and located between the fixed frame (2) and the support frame (7); a fixed ring (11) is sleeved on the outer side of the movable ring (10); a connecting rod (12) is provided on one side of the fixed ring (11); an end of the connecting rod (12) away from the fixed ring (11) is movably connected to one end of a connecting rod (13); the other end of the connecting rod (13) is connected to one side of the upper end of the fixed frame (2) via a movable shaft (14); a connecting rod (3) is provided on one side of the movable shaft (14) away from one end of the connecting rod (13) and located on the fixed frame (2); a connecting rod (4) is provided on the other side of the upper end of the fixed frame (2); A movable rod (17) is provided between the connecting rod three (15) and the connecting rod four (16); the middle position of the bottom of the movable rod (17) is connected to the upper end of the pipetting device (4); the connecting rod one (12) and the connecting rod two (13) are movably connected via a rotating shaft one (18); the movable rod (17) and the connecting rod three (15) and the connecting rod four (16) are movably connected via a rotating shaft two (19); the pipetting device (4) comprises a fixed cylinder (20); the upper end of the fixed cylinder (20) is connected to the movable rod (17); a partition plate one (21) and a partition plate two (22) are respectively provided inside the fixed cylinder (20); and a partition plate one (21) and a partition plate two (22) are provided between the partition plate one (21) and the partition plate two (22). An extrusion device (23) is provided inside the fixed cylinder (20); a motor (24) is provided at the upper end of the partition plate (21) and inside the fixed cylinder (20); a connecting tube (25) is provided at the lower end of the partition plate (22); the connecting tube (25) passes through the lower end of the fixed cylinder (20); and one end of the connecting tube (25) is connected to the upper end of the pipette (26); the extrusion device (23) comprises a rotating block (28); the upper end center of the rotating block (28) is connected to the output shaft of the motor (24) via a movable shaft (29); a plurality of limit blocks (39) are provided at the lower end of the rotating block (28); and an extrusion block (30) is provided below the rotating block (28).The extrusion block (30) is located inside the sealing chamber (31), and the sealing chamber (31) is located at the upper end of the second partition (22).

2. A liquid transfer device for food testing according to claim 1, characterized in that: The movable shaft one (8) passes through the support frame (7), the movable ring (10), the fixed frame (2) and the connecting rod four (16) in sequence.

3. A liquid transfer device for food testing according to claim 1, characterized in that: Bearings are provided at the connection points between the fixed frame (2) and the second movable shaft (14), and between the first movable shaft (8) and the fixed frame (2) and the support frame (7).

4. A liquid transfer device for food testing according to claim 1, characterized in that: The upper end of the fixed cylinder (20) is connected to the movable rod (17) via two sets of bolts (27).

5. A liquid transfer device for food testing according to claim 1, characterized in that: Four groups of clamping blocks (32) are provided on the outer side of the extrusion block (30), and four groups of grooves (33) are provided on the lower end of the extrusion block (30).

6. A liquid transfer device for food testing according to claim 5, characterized in that: One side of the limit block (39) is in an arc-shaped structure, and the limit block (39) matches with the upper end of the clamping block (32).

7. A liquid transfer device for food testing according to claim 6, characterized in that: The inner side of the sealing chamber (31) is provided with a limiting groove (34) matching with the extrusion block (30), and the bottom of the limiting groove (34) is respectively provided with four groups of grooves 2 (35) and one group of through holes (36), and springs (37) are provided between the four groups of grooves 1 (33) and the four groups of grooves 2 (35), and the through holes (36) are connected to one end of the connecting pipe (25), and the outer side of the limiting groove (34) is provided with four groups of clamping grooves (38) matching with the clamping block (32).

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