A Highly Synchronous Multi-Channel Electric Liquid Dispensing Device for Food Inspection

Abstract

This utility model relates to the field of electric liquid dispensing tools and discloses a highly synchronous multi-channel electric liquid dispensing device for food testing. It includes an electric pipette, a control panel on the handle for parameter adjustment, an operation button on the top for start / stop control, and multiple liquid guide tubes connected to the bottom via a dispensing end for liquid transfer. A grip is provided on one side of the electric pipette, with a rotating frame at the top. The rotating frame clamps and fixes the electric pipette via an arc-shaped clamp at the end. A sliding plate is connected to the bottom of the grip via a spring, and the sliding plate is fitted into a moving groove on the top of an L-shaped moving plate. The L-shaped moving plate is fitted into an L-shaped slot on the top of a lower moving seat. A suction cup is fixed to one end of the L-shaped moving plate for adsorption onto the table surface for fixation. Multiple ball bearings are nested at the bottom of the moving seat for sliding. This utility model reduces the burden on the operator's hands and improves the stability and accuracy of testing.

Description

Technical Field

[0001] This utility model relates to the field of electric liquid dispensing tools, and in particular to a highly synchronous multi-channel electric liquid dispensing device for food inspection. Background Technology

[0002] In current food testing laboratories, multichannel electric pipettes have become a core tool for high-throughput liquid handling. They can automatically control the simultaneous aspiration or discharge of liquids from multiple channels, and can also control the volume of a single aspiration or discharge. For specific structure details, please refer to the attached document. Figure 1 However, its use still has the following pain points: operator fatigue. Traditional electric pipettes require manual holding throughout the process, while food testing involves a large number of repetitive pipetting operations (such as 96-well plate dispensing and multiple batch sample transfers). Prolonged operation can easily lead to hand muscle fatigue or even occupational injuries (such as carpal tunnel syndrome). The weight of the pipette itself (usually 300-500g) combined with the liquid load of multiple channels (such as 8-channel simultaneous operation) further increases the operator's burden. Moreover, prolonged hand-held instrument movement can easily lead to insufficient stability. Manual operation is prone to liquid adhering to the wall, dripping, or volume errors due to shaking, affecting the accuracy of detection. Especially in some special scenarios (such as tilting the liquid to the bottom of the centrifuge tube) the angle needs to be adjusted, and it is difficult to maintain a stable posture with one hand.

[0003] While some fixed supports exist, they lack flexibility and cannot meet the needs of dynamic pipetting; and some simple sliding rail devices only support linear movement and cannot achieve multi-degree-of-freedom adjustment (such as height and angle fine-tuning). Therefore, there is a need for a highly synchronous multi-channel electric liquid dispensing device for food testing that is easy to move and adjust, reduces the burden on personnel, and improves the stability and accuracy of testing.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this utility model, and therefore may include prior art that is not known to those skilled in the art. Utility Model Content

[0005] To address the problems of hand pain, unstable grip, and inconvenient adjustment that arise from manually holding electric pipettes throughout the testing process in existing technologies, this invention provides a highly synchronous multi-channel electric liquid dispensing device for food testing that reduces the burden on personnel, facilitates movement and adjustment, and improves the stability and accuracy of testing.

[0006] The present invention provides a highly synchronous multi-channel electric liquid dispensing device for food testing, which adopts the following technical solution:

[0007] A highly synchronous multi-channel electric liquid dispensing device for food inspection includes an electric pipette. The pipette has a control panel on its handle for parameter adjustment, an operation button on its top for start / stop control, and multiple liquid guide tubes connected to its bottom via a dispensing end for liquid transfer. A grip is located on one side of the electric pipette, with a rotating frame at its top. The rotating frame clamps and fixes the electric pipette in place via an arc-shaped clamp at its end. A sliding plate is connected to the bottom of the grip via a spring, and the sliding plate fits into a moving groove at the top of an L-shaped moving plate. The L-shaped moving plate fits into an L-shaped slot at the top of a lower moving base. A suction cup is fixed to one end of the L-shaped moving plate for adsorption onto the table surface for fixation. Multiple ball bearings are nested at the bottom of the moving base for sliding.

[0008] Furthermore, the top of the grip is fixedly connected to a screw rod via a connecting plate, and the end of the screw rod is threadedly connected to a nut. The screw rod passes through the rotating rod of the rotating frame, and a through hole is provided at the through point. Tightening the nut can fix the rotation angle of the rotating frame. One end of the rotating rod is fixedly connected to an arc-shaped clamping plate, which is clamped on the outside of the handle of the electric pipette. One side of the arc-shaped clamping plate is made of elastic material to facilitate elastic clamping of the electric pipette.

[0009] Furthermore, the other side of the arc-shaped plate is connected to a bolt through a threaded hole. Tightening the bolt secures the electric pipette to the inside of the arc-shaped plate.

[0010] Furthermore, an adjustment groove is provided on the inner side of the grip, a first guide rod is fixed to the top edge of the slide plate, the upper end of the first guide rod is inserted into the inner side of the adjustment groove, a spring is sleeved on the outer side of the first guide rod, and the compressed spring can press down the electric pipette.

[0011] Furthermore, a rectangular plate is fixed to the inner wall edge of the moving groove, and a guide hole is provided in the middle of the rectangular plate; a sliding groove is provided at the bottom of the sliding plate, and a second guide rod is fixed laterally on the inner side of the sliding groove. The rectangular plate is nested inside the sliding groove, and the second guide rod passes through the guide hole to limit the horizontal movement trajectory of the sliding plate.

[0012] Furthermore, a rotating groove is provided on the other side wall of the L-shaped movable plate, and the inner wall of one end of the L-shaped groove is nested inside the rotating groove by a protruding circular plate, so that the L-shaped movable plate rotates around the protruding circular plate.

[0013] Furthermore, one end of the L-shaped slot extends through the bottom of the movable base, and the bottom surface of the suction cup is lower than the bottom surface of the movable base.

[0014] Furthermore, the balls are symmetrically distributed at the bottom of the movable seat, making the movement of the movable seat stable.

[0015] In summary, this utility model has the following beneficial technical effects:

[0016] (1) The L-shaped moving plate and moving seat set in this scheme are connected to the handle by a sliding plate at the top of the L-shaped moving plate. The end of the handle is clamped and fixed by a rotating frame. The handle is slightly tilted back so that the suction cup at the bottom of the L-shaped moving plate does not contact the table. Then, the ball bearings at the bottom of the moving seat allow the pipette to slide horizontally with one hand, reducing frictional resistance. The ball bearing array ensures no tilting during movement, reducing the burden on the hands of the personnel. Pressing down the L-shaped moving plate so that the suction cup at its end adheres to the table can fix the moving seat. The suction cup adsorption provides zero displacement stability for static experiments and resists vibration interference.

[0017] (2) The grip and slide plate set in this scheme can be used to fix the moving seat after pressing down the L-shaped moving plate. The slide plate can be slid on the top of the L-shaped moving plate to realize the horizontal movement of the electric pipette. Liquid can be added to containers in different positions. The grip can be moved up and down along the first guide rod. The spring pre-compression slide plate can quickly adjust the height of the pipette to adapt to different container depths. The adjustment process is also supported by the bracket, which further reduces the burden on the hands of personnel.

[0018] (3) This solution uses a rotating frame to rotate the electric pipette at the top of the handle to adjust the angle. The angle can be locked by tightening the nut to meet the needs of slanted insertion of liquid (such as PCR tubes) or vertical dispensing. Compared with the traditional manual method of holding the instrument for adjustment, the adjustment is more stable and less labor-intensive. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram showing the connection between the handle, rotating frame, L-shaped moving plate, and moving base of this utility model;

[0021] Figure 3 This is a partial sectional view of the grip, rotating frame, and sliding plate of this utility model;

[0022] Figure 4 This is a three-dimensional schematic diagram of the L-shaped movable plate of this utility model;

[0023] Figure 5 This is a three-dimensional schematic diagram of the movable seat of this utility model.

[0024] Explanation of reference numerals in the attached drawings: 1. Electric pipette; 11. Control panel; 12. Operation button; 13. Dispensing end; 14. Guide tube; 2. Handle; 21. Connecting plate; 22. Screw; 23. Nut; 24. Adjustment groove; 3. Rotating frame; 31. Arc-shaped retaining plate; 32. Bolt; 33. Rotating rod; 4. Slide plate; 41. First guide rod; 42. Spring; 43. Slide groove; 44. Second guide rod; 5. L-shaped moving plate; 51. Suction cup; 52. Moving groove; 53. Rectangular plate; 54. Guide hole; 55. Rotating groove; 6. Moving seat; 61. Ball bearing; 62. L-shaped retaining groove; 63. Protruding circular plate. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-5 The present invention will be described in further detail below.

[0026] Example 1: In this example, refer to Figure 1 As shown, specifically, a highly synchronous multi-channel electric liquid dispensing device for food inspection includes an electric pipette 1. The handle of the electric pipette 1 is equipped with a control panel 11 for adjusting parameters, and an operation button 12 is provided on the top for controlling start and stop, and controlling liquid aspiration or discharge. Multiple liquid guide tubes 14 are inserted into the bottom through the dispensing end 13 for liquid transfer. The above structure constitutes a common electric pipette 1. The specific operating principle and steps can be referred to the existing pipette.

[0027] Reference Figure 2 , Figure 4 and Figure 5 As shown, specifically, a grip 2 is provided on one side of the electric pipette 1, and a rotating frame 3 is provided on the top of the grip 2. The rotating frame 3 clamps and fixes the electric pipette 1 through an arc-shaped clamp 31 at the end. The bottom of the grip 2 is connected to a sliding plate 4 through a spring 42. The sliding plate 4 is fitted into a moving groove 52 on the top of an L-shaped moving plate 5. The L-shaped moving plate 5 is fitted into an L-shaped slot 62 on the top of a lower moving base 6. A suction cup 51 is fixed to the bottom of one end of the L-shaped moving plate 5 for adsorption and fixation on the table. Multiple ball bearings 61 are nested at the bottom of the moving base 6 for... The sliding motion of the movable seat 6 can drive the electric pipette 1 to move. The other side wall of the L-shaped movable plate 5 is provided with a rotating groove 55. The inner wall of one end of the L-shaped slot 62 is nested inside the rotating groove 55 through the protruding circular plate 63, so that the L-shaped movable plate 5 rotates around the protruding circular plate 63. When the L-shaped movable plate 5 rotates and rises, the suction cup 51 does not contact the table. One end of the L-shaped slot 62 passes through the bottom of the movable seat 6. The bottom surface of the suction cup 51 is lower than the bottom surface of the movable seat 6. The balls 61 are symmetrically distributed at the bottom of the movable seat 6, so that the movable seat 6 moves stably.

[0028] Specifically, by connecting the electric pipette 1 to the moving base 6, when liquid needs to be transferred during food inspection, the operator can rotate and lift the L-shaped moving plate 5 so that the suction cup 51 does not touch the table. This allows the moving base 6 to slide flexibly via the bottom ball bearings 61, facilitating the reciprocating movement of the pipette. At the same time, there is no need for manual handling of the pipette, reducing the burden on the operator's hands. Compared to the situation where manual handling of the pipette is prone to shaking, the multiple evenly distributed ball bearings 61 make the pipette move smoothly and resist vibration interference.

[0029] Example 2: In this example, refer to Figure 2 and Figure 3 Specifically, the top of the handle 2 is fixedly connected to the screw 22 via the connecting plate 21. The end of the screw 22 is threadedly connected to the nut 23. The screw 22 passes through the rotating rod 33 of the rotating frame 3, and a through hole is provided at the through point. Tightening the nut 23 can fix the rotation angle of the rotating frame 3. One end of the rotating rod 33 is fixedly connected to the arc-shaped clamping plate 31. The arc-shaped clamping plate 31 is clamped on the outside of the handle of the electric pipette 1. One side of the arc-shaped clamping plate 31 is made of elastic material, that is, the part of the arc-shaped clamping plate 31 that extends to one side is made of elastic material, which makes it easy to elastically clamp the electric pipette 1 and to squeeze the pipette into the inside of the arc-shaped clamping plate 31. The other side of the arc-shaped clamping plate 31 is connected to the bolt 32 via the threaded hole. Tightening the bolt 32 tightens the electric pipette 1 and fixes it inside the arc-shaped clamping plate 31.

[0030] Specifically, during use, the handle of the electric pipette 1 is pressed and engaged with the inside of the arc-shaped clamping plate 31, and then the bolt 32 is tightened to secure the electric pipette 1, thus fixing the electric pipette 1 to the rotating frame 3. Simultaneously, when adding or aspirating liquid, for situations requiring the guide tube 14 to contact the container wall or for tilting the liquid discharge, the operator can rotate the rotating frame 3 at the top of the handle 2 to flexibly adjust the angle of the electric pipette 1. After adjusting the angle, tightening the nut 23 at the end of the screw 22 will fix the pipette angle. The adjustment operation is convenient and, compared to the traditional method of manually adjusting the angle by holding the pipette, it is more labor-saving and avoids the impact of manual shaking on the stability of the angle adjustment.

[0031] Example 3: In this example, refer to Figure 3 and Figure 4As shown, specifically, an adjustment groove 24 is provided on the inner side of the grip 2, and a first guide rod 41 is fixed to the top edge of the slide plate 4. The upper end of the first guide rod 41 is inserted into the inner side of the adjustment groove 24, and the grip 2 can slide up and down along the first guide rod 41. A spring 42 is sleeved on the outer side of the first guide rod 41. Compression of the spring 42 can press down on the electric pipette 1, and the spring 42 can lift the pipette back to its original position. When adding or aspirating liquid, the operator can adjust the height of the electric pipette 1 by holding the grip 2 and pressing down, which makes it easy to insert the bottom liquid guide tube 14 into the container to discharge or aspirate liquid. The height adjustment is convenient.

[0032] Example 4: In this example, refer to Figure 4 , Figure 5 As shown, specifically, a rectangular plate 53 is fixed to the inner wall edge of the moving groove 52, and a guide hole 54 is provided in the middle of the rectangular plate 53; a sliding groove 43 is provided at the bottom of the sliding plate 4, and a second guide rod 44 is horizontally fixed inside the sliding groove 43. The rectangular plate 53 is nested inside the sliding groove 43, and the second guide rod 44 passes through the guide hole 54 to limit the horizontal movement trajectory of the sliding plate 4. When the electric pipette 1 adds liquid at the same time, if multiple rows of containers are added, after adding the first row of liquid, the operator can slide the sliding plate 4 on the top of the L-shaped moving plate 5. The sliding is limited by the moving groove 52 and the rectangular plate 53, and the sliding movement is stable, which makes it easy to move the electric pipette 1 to the top of the next row of containers for liquid addition. The operation is flexible. At the same time, the instrument is supported by the support structure during the liquid addition process, which reduces the burden on the manual hand and improves the stability and accuracy of the detection.

[0033] Working principle: When using the electric pipette 1 for multi-channel food testing liquid addition, the operator engages the electric pipette 1 with the inside of the arc-shaped clamping plate 31 and tightens one side bolt 32 to secure it, thus fixing the electric pipette 1 to the overall support structure. When transferring liquid, the operator slightly raises the L-shaped moving plate 5 to prevent the suction cup 51 from contacting the table. The pipette is then easily moved using the ball bearing 61 at the bottom of the moving base 6. After moving the pipette, when aspirating or discharging liquid, the operator presses down the L-shaped moving plate 5 to fix the suction cup 51 to the table. The operator then rotates the rotating frame 3 to adjust the pipette. After adjusting the angle, tighten the nut 23 to secure it. Then, the operator presses down the handle 2, causing it to press down the pipette, allowing the guide tube 14 to be inserted into the container for dripping or aspirating. After the operation, release the handle 2 so that the spring 42 pushes the pipette back to its original position. Then, the operator slides the slide plate 4 on top of the L-shaped moving plate 5, moving the pipette horizontally to adjust the liquid aspiration or discharge position. Through the above structure, when using the electric pipette 1 for liquid transfer in food testing, there is no need for the operator to hold the instrument at all times, reducing the burden on the operator's hands and avoiding interference from hand tremors. At the same time, the overall structure is flexible to adjust and easy to operate.

Claims

1. A high-synchronicity multi-channel food inspection electric liquid dispensing device comprising an electric pipette, characterized in that: The electric pipette has a control panel on the handle for adjusting parameters, an operation button on the top for controlling start and stop, and multiple liquid guide tubes connected to the bottom via the dispensing end for liquid transfer. The electric pipette is provided with a handle on one side, and a rotating frame is provided at the top of the handle. The rotating frame clamps and fixes the electric pipette by means of an end arc-shaped clamp. The bottom of the grip bar is connected to the slide plate by a spring, and the slide plate is fitted into the moving groove at the top of the L-shaped moving plate; The L-shaped movable plate is fitted into the L-shaped slot at the top of the lower movable seat. A suction cup is fixed to one end of the L-shaped movable plate to adhere to the tabletop for fixation. Multiple ball bearings are nested at the bottom of the movable seat for sliding.

2. The high-synchronism multi-channel food inspection electric liquid feeding device according to claim 1, characterized in that: The top of the grip rod is fixedly connected to a screw rod via a connecting plate. The end of the screw rod is threadedly connected to a nut. The screw rod passes through the rotating rod of the rotating frame, and a through hole is provided at the through point. Tightening the nut can fix the rotation angle of the rotating frame. One end of the rotating rod is fixedly connected to the arc-shaped clamping plate, which is clamped on the outside of the handle of the electric pipette. One side of the arc-shaped clamping plate is made of elastic material, which facilitates the elastic clamping of the electric pipette.

3. A high synchronism multi-channel food inspection electric liquid feeding device according to claim 2, characterized in that: The other side of the arc-shaped plate is connected to a bolt through a threaded hole. Tightening the bolt tightens the electric pipette and fixes it inside the arc-shaped plate.

4. The high-synchronism multi-channel food inspection electric liquid feeding device according to claim 3, characterized in that: An adjustment groove is provided on the inner side of the grip, and a first guide rod is fixed to the top edge of the slide plate. The upper end of the first guide rod is inserted into the inner side of the adjustment groove, and a spring is sleeved on the outer side of the first guide rod. Compression of the spring can press down the electric pipette.

5. The highly synchronous multi-channel electric liquid dispensing device for food testing according to claim 4, characterized in that: A rectangular plate is fixed to the inner wall edge of the movable groove, and a guide hole is provided in the middle of the rectangular plate; The bottom of the skateboard is provided with a groove, and a second guide rod is fixed horizontally inside the groove. A rectangular plate is nested inside the groove, and the second guide rod passes through the guide hole to limit the horizontal movement trajectory of the skateboard.

6. A high synchronism multi-channel food inspection liquid feeding device according to claim 5, characterized in that: The other side wall of the L-shaped movable plate is provided with a rotating groove. The inner wall of one end of the L-shaped groove is nested inside the rotating groove by a protruding circular plate, so that the L-shaped movable plate rotates around the protruding circular plate.

7. A high synchronism multi-channel food inspection electric liquid feeding device according to claim 6, characterized in that: One end of the L-shaped slot extends through the bottom of the movable base, and the bottom surface of the suction cup is lower than the bottom surface of the movable base.

8. A high synchronism multi-channel food inspection electric liquid feeding device according to claim 7, characterized in that: The balls are symmetrically distributed at the bottom of the movable seat, which makes the movement of the movable seat stable.

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