A pipetting device for oilfield lubricant detection

Abstract

The utility model discloses a kind of oilfield lubricating oil detection pipette device, including rack, X-axis sliding table module, Y-axis sliding table module, Y-axis sliding table module and Z-axis sliding table module;Pipette pump is equipped on Z-axis sliding table module, the bottom of pipette pump is equipped with the socket pipe for connecting disposable suction head, the bottom of Z-axis sliding table module is equipped with the mechanism of retracting head for peeling disposable suction head.The utility model replaces traditional need manual operation by the way of mechanization pipette and replacing disposable suction head, thereby reduce labor intensity and improve work efficiency.

Description

Technical Field

[0001] This utility model relates to oilfield sampling equipment, specifically a pipetting device for testing oilfield lubricating oil. Background Technology

[0002] Currently, oilfield lubricating oil testing mainly relies on manual pipetting operations using pipettes, without mechanized pipetting devices. Commonly used pipetting tools include: a multi-functional pipette disclosed in CN223082805U, and an anti-backflow pipette disclosed in CN223082804U, etc. Because there are many samples to be tested in oil fields, and each time a pipette or disposable pipette tip needs to be replaced manually to ensure the accuracy of the test data, the frequent repetition of the same pipetting work is labor-intensive and inefficient. Therefore, the inventor wanted to design a mechanized pipetting device to perform this repetitive work. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a pipetting device for testing oilfield lubricating oil. This device replaces the traditional manual operation method by using mechanized pipetting and replacing disposable pipette tips, thereby reducing labor intensity and improving work efficiency.

[0004] The technical solution of this utility model is: a pipetting device for testing oilfield lubricating oil, including a frame, an X-axis slide module on the top of the frame, a Y-axis slide module above the X-axis slide module, and the X-axis sliding end of the X-axis slide module is fixedly connected to the Y-axis sliding end of the Y-axis slide module. A Z-axis slide module is provided on the outer side of one end of the Y-axis slide module, and the Z-axis sliding end of the Z-axis slide module is fixedly connected to the adjacent end of the Y-axis slide module. A pipetting pump is provided at the bottom of the outer end face of the Z-axis slide module, and a connector tube for connecting a disposable pipette tip is provided at the bottom of the pipetting pump. A tip-removal mechanism for peeling off the disposable pipette tip is provided at the bottom of the Z-axis slide module. The head-removal mechanism includes a mounting base fixedly installed at the bottom of the Z-axis slide module. A vertically arranged optical rod is connected to the lower end of the mounting base. A paddle is slidably connected to the optical rod. One end of the paddle is close to the insertion tube and is used to peel off the disposable suction head fitted on the insertion tube. A stepper motor is also installed on the lower end of the mounting base. The rotation axis of the stepper motor is connected to a lead screw, which vertically passes through the paddle and is threadedly connected to the paddle.

[0005] Preferably, the pipette pump is a miniature ceramic plunger pump.

[0006] Preferably, the frame is a gantry structure.

[0007] Preferably, the gantry structure is assembled from aluminum profiles and connecting angle brackets.

[0008] Preferably, the outer edge of the pry bar is provided with an annular peeling member that is fitted onto the outside of the insertion tube for peeling off the disposable suction head.

[0009] Preferably, it also includes a main controller, which is electrically connected to the X-axis slide module, the Y-axis slide module, the Z-axis slide module, the pipette pump, and the stepper motor.

[0010] Preferably, the main controller is a microcontroller or a PC.

[0011] Compared with the prior art, this utility model has the following advantages: This solution, through a motion structure with XYZ three-axis movement, can perform liquid transfer and actively install disposable pipette tips. Furthermore, through a tip removal mechanism, the disposable pipette tips can be actively peeled off, thereby realizing mechanized operation from assembling disposable pipette tips to liquid transfer and then to replacing disposable pipette tips. By using mechanized liquid transfer and disposable tip replacement, this replaces the traditional repetitive operation that requires manual labor, thereby reducing labor intensity and improving work efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram showing the interaction between the pipetting head retraction mechanism and the pipetting pump. In the diagram: 1. Frame, 2. X-axis slide module, 3. X-axis sliding end, 4. Y-axis slide module, 5. Y-axis sliding end, 6. Z-axis slide module, 7. Z-axis sliding end, 8. Pipette pump, 9. Disposable pipette tip, 10. Tip retraction mechanism, 11. Mounting base, 12. Stepper motor, 13. Lead screw, 14. Smooth rod, 15. Paddle, 16. Insert tube, 17. Annular peeling component. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example 1

[0014] like Figure 1 and Figure 2 A pipetting device for testing oilfield lubricating oil includes a frame 1, an X-axis slide module 2 on the top of the frame 1, and a Y-axis slide module 4 above the X-axis slide module 2.

[0015] The X-axis sliding end 3 of the X-axis slide module 2 is fixedly connected to the Y-axis sliding end 5 of the Y-axis slide module 4.

[0016] A Z-axis slide module 6 is provided on the outer side of one end of the Y-axis slide module 4, and the Z-axis sliding end 7 of the Z-axis slide module 6 is fixedly connected to the adjacent end of the Y-axis slide module 4.

[0017] A pipetting pump 8 is provided at the bottom of the outer end face of the Z-axis slide module 6. A connector tube 16 is provided at the bottom of the pipetting pump 8. The connector tube 16 is used to connect a disposable pipette tip 9. A tip removal mechanism 10 is provided at the bottom of the Z-axis slide module 6. The tip removal mechanism 10 is used to peel off the disposable pipette tip 9.

[0018] The head retraction mechanism 10 includes a mounting base 11 fixedly installed at the bottom of the Z-axis slide module 6, and a vertically arranged light rod 14 is connected to the lower end of the mounting base 11 facing downward. A lever 15 is slidably connected to the light rod 14. One end of the lever 15 is close to the insertion tube 16, and the disposable suction head 9 fitted on the insertion tube 16 is peeled off by the end of the lever 15 on that side.

[0019] A stepper motor 12 is mounted on the lower end face of the mounting base 11. The rotating shaft of the stepper motor 12 is connected downward to a lead screw 13. The lead screw 13 passes vertically through the lever 15 and is threadedly connected to the lever 15.

[0020] Work process: First, start the X-axis slide module 2, Y-axis slide module 4, and Z-axis slide module 6 to move the pipette tube 16 of the pipette pump 8 directly above the rack of disposable pipette tips 9. Then, by controlling the movement of the Z-axis slide module 6, the pipette pump 8 is moved down a certain distance so that the disposable pipette tips 9 on the rack are fitted onto the pipette tube 16. Then, the pipetting operation is completed by moving the X-axis slide module 2, the Y-axis slide module 4, and the Z-axis slide module 6, and by controlling the pumping and discharging of the pipetting pump 8. Then, the X-axis slide module 2, Y-axis slide module 4, and Z-axis slide module 6 are moved to the top of the trash can, and the stepper motor 12 of the head retraction mechanism 10 is controlled to rotate a certain number of times. Stepper motor 12 drives lead screw 13 to rotate. With the threaded engagement between lead screw 13 and pawl 15, pawl 15 moves downward along light rod 14 and peels used disposable suction head 9 from insertion tube 16. Then, stepper motor 12 is controlled to rotate in the opposite direction to reset pawl 15. Repeat the above steps for the next pipetting operation. During the entire mechanized pipetting process, only manual replenishment of disposable pipette tips and sample tubes is required. By mechanizing pipetting and replacing disposable pipette tips, the labor intensity is greatly reduced and the work efficiency is improved. Example 2

[0021] This embodiment is a further optimization based on the above embodiment, specifically: like Figure 1 and Figure 2 The outer edge of the pry bar 15 is provided with an annular peeling member 17, which is fitted on the outside of the insertion tube 16 and is used to peel off the disposable suction head 9.

[0022] The annular peeling member 17 can make contact with the end of the disposable suction tip 9 around the circumference, and has a large contact surface. The annular peeling member 17 moves along the axis of the disposable suction tip 9, and pushes the disposable suction tip 9 out of the insertion tube 16 evenly, making the head removal operation more stable and reliable.

[0023] In addition, the pipette pump 8 is a miniature ceramic plunger pump with relatively high precision, and the frame 1 is a gantry structure, which is assembled from aluminum profiles and connecting brackets. Example 3

[0024] This embodiment is a further optimization based on the above embodiment, specifically: This embodiment also includes a main controller, which is a microcontroller or a PC.

[0025] The main controller is electrically connected to the X-axis slide module 2, Y-axis slide module 4, Z-axis slide module 6, pipetting pump 8, and stepper motor 12, respectively.

[0026] The main controller precisely controls the starting sequence and timing of the X-axis slide module 2, Y-axis slide module 4, Z-axis slide module 6, pipetting pump 8, and stepper motor 12, thereby enabling the logical operation of actively changing disposable pipette tips 9 and actively pipetting, making it more flexible and convenient to use.

[0027] This utility model is not limited to the above-described embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model, and the changed content still falls within the protection scope of this utility model.

Claims

1. A pipetting device for testing oilfield lubricating oil, comprising a frame, characterized in that: The top of the frame is provided with an X-axis slide module, and above the X-axis slide module is a Y-axis slide module. The X-axis sliding end of the X-axis slide module is fixedly connected to the Y-axis sliding end of the Y-axis slide module. A Z-axis slide module is provided on the outer side of one end of the Y-axis slide module, and the Z-axis sliding end of the Z-axis slide module is fixedly connected to the adjacent end of the Y-axis slide module. A pipetting pump is provided at the bottom of the outer end face of the Z-axis slide module, and a connector tube for connecting a disposable pipette tip is provided at the bottom of the pipetting pump. A tip-removal mechanism for peeling off the disposable pipette tip is provided at the bottom of the Z-axis slide module. The head-removal mechanism includes a mounting base fixedly installed at the bottom of the Z-axis slide module. A vertically arranged optical rod is connected to the lower end of the mounting base. A paddle is slidably connected to the optical rod. One end of the paddle is close to the insertion tube and is used to peel off the disposable suction head fitted on the insertion tube. A stepper motor is also installed on the lower end of the mounting base. The rotation axis of the stepper motor is connected to a lead screw, which vertically passes through the paddle and is threadedly connected to the paddle.

2. The pipetting device for testing oilfield lubricating oil according to claim 1, characterized in that: The pipette pump is a miniature ceramic plunger pump.

3. The pipetting device for testing oilfield lubricating oil according to claim 1, characterized in that: The frame is a gantry structure.

4. The pipetting device for testing oilfield lubricating oil according to claim 3, characterized in that: The gantry structure is assembled from aluminum profiles and connecting brackets.

5. A pipetting device for testing oilfield lubricating oil according to claim 1, characterized in that: The outer edge of the pry bar is provided with an annular peeling component that is fitted onto the outside of the insertion tube for peeling off disposable suction tips.

6. The pipetting device for testing oilfield lubricating oil according to claim 1, characterized in that: It also includes a main controller, which is electrically connected to the X-axis slide module, the Y-axis slide module, the Z-axis slide module, the pipetting pump, and the stepper motor.

7. A pipetting device for testing oilfield lubricating oil according to claim 6, characterized in that: The main controller is a microcontroller or a PC.

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