Pipetting and subpackaging device capable of rapidly adjusting volume in food detection

Abstract

The utility model discloses a pipetting and subpackaging device capable of quickly adjusting volume in food detection, which comprises a cylindrical holder, an operation groove is arranged in the middle of the holder, a control device is arranged in the operation groove, a subpackaging tank is arranged at the upper end of the holder, a fixing groove is arranged at the lower end of the holder, and the fixing groove is arranged in the holding device. A liquid separation container is movably connected into the fixing groove and arranged at the lower end of the subpackaging tank. When the capacity of the split charging device needs to be changed, the split charging capacity can be changed by changing different liquid separation containers and split charging tanks. In the subpackaging process, subpackaging can be carried out only after the container is accurately positioned, and subpackaging cannot be carried out by pressing the button when the container is not accurately positioned. When the container is not accurately positioned after being inserted, the positioning strip on the container can enter the mounting groove, and meanwhile, the positioning strip can move to the position below the central pressing column to block the central pressing column.

Description

Technical Field

[0001] This utility model relates to the field of food testing and dispensing technology, specifically a pipetting and dispensing device for rapid volume adjustment in food testing. Background Technology

[0002] Food safety testing involves detecting harmful substances in food according to national standards, primarily focusing on harmful and toxic indicators such as heavy metals and aflatoxin. An important aspect of food science and engineering is the introduction and application of chemical unit operations, developing them into food engineering unit operations, thereby promoting the food industry towards large-scale, continuous, and automated production.

[0003] Existing pipetting and dispensing devices require the dispenser to be moved above the container and aligned before dispensing. If the dispensing is not accurately aligned during the movement, it will result in dispensing failure and waste of the sample. Utility Model Content

[0004] The purpose of this invention is to provide a pipetting and dispensing device for rapid volume adjustment in food testing to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a gripper, the gripper being cylindrical, an operating groove being provided in the middle of the gripper, a control device being provided in the operating groove, a dispensing tank being provided at the upper end of the gripper, a fixing groove being provided at the lower end of the gripper, a liquid dispensing container being movably connected in the fixing groove, and the liquid dispensing container being located at the lower end of the dispensing tank.

[0006] Preferably, the control device includes a central pressing column, which is slidably connected to the grip, and a main pressing column is provided on the outer side of the central pressing column, with a touch switch at the lower end of the main pressing column.

[0007] Preferably, the lower end of the central pressing column is provided with a fixing ring, the outer side of the fixing ring is provided with a connecting plate, the connecting plate is fixedly connected to the gripper, the upper surface of the connecting plate is fixedly connected with a first support spring, the interior of the central pressing column is provided with a cavity, the cavity is provided with a positioning pin, and the upper end of the first support spring is fixedly connected to the inner wall of the cavity.

[0008] Preferably, both the main pressing column and the touch switch are provided with vertical grooves, which are adapted to the connecting plate.

[0009] Preferably, the liquid dispensing container has a positioning strip on one side, the grip has an installation groove inside, the installation groove is adapted to the positioning strip, and the upper surface of the positioning strip has a positioning device.

[0010] Preferably, the positioning device includes a connecting block with a groove that is adapted to the positioning pin. A hydraulic rod is provided at the bottom of the groove, a connecting rod is provided at the bottom of the hydraulic rod, a hydraulic lifting platform is provided on the outside of the connecting rod, and a support ring is provided at the upper end of the hydraulic lifting platform. The support ring is located below the touch switch.

[0011] Preferably, the lower end of the dispensing container is provided with a titration port, which is linked to a touch switch.

[0012] Compared with existing technologies, the beneficial effects of this utility model are as follows: When it is necessary to change the capacity of the dispenser, the dispensing capacity can be changed by changing different dispensing containers and dispensing tanks. During dispensing, dispensing can only be performed after the container is accurately positioned; if the container is not accurately positioned, the button cannot be pressed to dispense. When the container is not accurately positioned after insertion, the positioning strip on the container will enter the mounting groove and move below the central pressing column, blocking the central pressing column and preventing it from moving downwards. This, in turn, prevents the central pressing column from pressing down, thus preventing dispensing under misalignment. When the container is in place, the positioning device on the positioning strip corresponds vertically to the position of the control device. Subsequently, the central pressing column can be pressed down, which in turn allows the main pressing column to be pressed down, causing the touch switch to move downwards. At the same time, the connecting block moves downwards, compressing the hydraulic rod, which drives the hydraulic lifting platform to move upwards through the connecting rod, pushing the support ring upwards and squeezing the touch switch from below. This causes the touch switch to activate the dispensing switch to dispense. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the liquid separation container structure of this utility model;

[0015] Figure 3 This is a cross-sectional structural diagram of the control device of this utility model.

[0016] In the diagram: 1. Holder; 2. Operating slot; 3. Control device; 4. Dispensing tank; 5. Dispensing container; 6. Central pressing column; 7. Main pressing column; 8. Fixing ring; 9. Connecting plate; 10. First support spring; 11. Positioning pin; 12. Vertical groove; 13. Positioning strip; 14. Positioning device; 15. Connecting block; 16. Groove; 17. Hydraulic rod; 18. Connecting rod; 19. Hydraulic lifting platform; 20. Support ring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-3 The embodiment provided by this utility model includes a gripper 1, which is cylindrical. An operating groove 2 is provided in the middle of the gripper 1, and a control device 3 is provided within the operating groove 2. The gripper 1 is convenient for the operator to hold, and the operating groove 2 facilitates operation and adjustment by the operator. A dispensing container 4 is provided at the upper end of the gripper 1, which serves to store dispensed materials. A fixing groove is provided at the lower end of the gripper 1, and a dispensing container 5 is movably connected within the fixing groove, the dispensing container 5 being positioned at the lower end of the dispensing container 4.

[0019] The control device 3 includes a central pressing column 6, which is slidably connected to the gripper 1. A main pressing column 7 is provided on the outer side of the central pressing column 6, and a touch switch is provided at the lower end of the main pressing column 7. The central pressing column 6 and the main pressing column 7 facilitate the operation of whether to perform titration dispensing.

[0020] The lower end of the central pressing column 6 is provided with a fixing ring 8, and the outer side of the fixing ring 8 is provided with a connecting plate 9. The connecting plate 9 is fixedly connected to the gripper 1. The upper surface of the connecting plate 9 is fixedly connected with a first support spring 10. The interior of the central pressing column 6 is provided with a cavity, and the cavity is provided with a positioning pin 11. The upper end of the first support spring 10 is fixedly connected to the inner wall of the cavity.

[0021] Both the main pressing column 7 and the touch switch are provided with vertical grooves 12, which are adapted to the connecting plate 9.

[0022] The liquid separation container 5 is provided with a positioning strip 13 on one side, and the gripper 1 is provided with an installation groove inside. The installation groove is adapted to the positioning strip 13, and the upper surface of the positioning strip 13 is provided with a positioning device 14.

[0023] The positioning device 14 includes a connecting block 15, on which a groove 16 is provided. The groove 16 is adapted to the positioning pin 11. A hydraulic rod 17 is provided at the bottom of the groove 16. A connecting rod 18 is provided at the bottom of the hydraulic rod 17. A hydraulic lifting platform 19 is provided on the outside of the connecting rod 18. A support ring 20 is provided at the upper end of the hydraulic lifting platform 19. The support ring 20 is located below the touch switch.

[0024] The lower end of the dispensing tank 4 is provided with a titration port, which is linked to a touch switch.

[0025] When the capacity of the dispenser needs to be changed, the dispensing capacity can be altered by changing different dispensing containers 5 and dispensing tanks 4. Dispensing can only proceed after the container is accurately positioned; the button cannot be pressed to dispense if the container is not accurately positioned. When the container is inserted but not accurately positioned, the positioning strip 13 on the container will enter the mounting groove and move below the central pressing column 6, blocking it and preventing it from moving downwards. This, in turn, blocks the main pressing column 7, preventing it from pressing down and causing dispensing without proper alignment. Once the container is in position, the positioning device 14 on the positioning strip 13 aligns vertically with the control device 3. The central pressing column 6 can then be pressed, allowing the main pressing column 7 to be pressed down, causing the touch switch to move downwards. Simultaneously, the connecting block 15 moves downwards, compressing the hydraulic rod 17, which, through the connecting rod 18, drives the hydraulic lifting platform 19 upwards, pushing the support ring 20 upwards and squeezing the touch switch from below. This causes the touch switch to activate the dispensing switch for dispensing.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A pipetting and dispensing device for rapid adjustment of volume in food testing, comprising a holder (1), characterized in that: The handle (1) is cylindrical, the middle part of the handle (1) is provided with an operation slot (2), the operation slot (2) is provided with a control device (3), the upper end of the handle (1) is provided with a sub-packaging tank (4), the lower end of the handle (1) is provided with a fixing slot, the fixing slot is movably connected with a sub-liquid container (5), and the sub-liquid container (5) is arranged at the lower end of the sub-packaging tank (4).

2. The pipette device of claim 1, wherein: The control device (3) comprises a center pressing column (6), the center pressing column (6) is in sliding connection with the handle (1), the outer side of the center pressing column (6) is provided with a main pressing column (7), and the lower end of the main pressing column (7) is provided with a touch switch.

3. The pipette device of claim 2, wherein: The lower end of the center pressing column (6) is provided with a fixing ring (8), the outer side of the fixing ring (8) is provided with a connecting plate (9), the connecting plate (9) is fixedly connected with the handle (1), the upper surface of the connecting plate (9) is fixedly connected with a first supporting spring (10), the inside of the center pressing column (6) is provided with a cavity, the cavity is provided with a positioning needle (11), and the upper end of the first supporting spring (10) is fixedly connected with the inner wall of the cavity.

4. The pipette device of claim 3, wherein: The main pressing column (7) and the touch switch are provided with vertical grooves (12), and the vertical grooves (12) are matched with the connecting plate (9).

5. The pipette device of claim 4, wherein: One side of the sub-liquid container (5) is provided with a positioning strip (13), the inside of the handle (1) is provided with a mounting groove, the mounting groove is matched with the positioning strip (13), and the upper surface of the positioning strip (13) is provided with a positioning device (14).

6. The pipette device of claim 5, wherein: The positioning device (14) comprises a connecting block (15), the connecting block (15) is provided with a groove (16), the groove (16) is matched with the positioning needle (11), the bottom of the groove (16) is provided with a hydraulic rod (17), the bottom of the hydraulic rod (17) is provided with a communication rod (18), the outer side of the communication rod (18) is provided with a hydraulic lifting platform (19), the upper end of the hydraulic lifting platform (19) is provided with a supporting ring (20), and the supporting ring (20) is arranged below the touch switch.

7. The pipette device of claim 1, wherein: The lower end of the sub-packaging tank (4) is provided with a titration port, and the titration port is linked with the touch switch.

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