Automatic liquid blocking device

Abstract

The utility model belongs to the technical field of automatic liquid treatment, and particularly relates to an automatic liquid blocking device which comprises a mounting seat, a sliding rail is vertically connected to the bottom end of the mounting seat, a sliding plate is slidably connected to one side of the sliding rail, a first driving part and a liquid suction assembly are mounted on the sliding plate, and the first driving part is in transmission fit with the liquid suction assembly. A trigger part and a liquid blocking assembly are arranged on the other side of the sliding rail, the trigger part is connected to the sliding rail in a sliding mode, the trigger part is arranged above the liquid blocking assembly and used for controlling the distance between the liquid blocking end of the liquid blocking assembly and the liquid suction end of the liquid suction assembly, a second driving part is arranged on the mounting base, and the trigger part and the sliding plate are both in synchronous transmission fit with the second driving part. The liquid taking device is compact in design, does not occupy extra space, is suitable for being integrated in various automatic liquid treatment systems, reduces sample waste and experiment remaking cost caused by cross contamination, improves liquid taking efficiency, enhances user experience, and has wide applicability and expandability.

Description

Technical Field

[0001] The utility model belongs to the technical field of automatic liquid processing, and in particular relates to an automatic liquid blocking device. Background Art

[0002] During automated liquid handling, as the pipette tip moves between aspiration and dispensing, trace amounts of liquid may adhere to the outside of the tip and drip due to surface tension, residual liquid, or improper operation. If these dripping liquids land on the workbench, other samples, or containers, they can cause cross-contamination, affecting the accuracy and reliability of experimental results. Therefore, it is necessary to propose an automatic liquid blocking device that effectively prevents this cross-contamination through physical blocking. Utility Model Content

[0003] The purpose of the utility model is to provide an automatic liquid blocking device to solve the problems existing in the above-mentioned prior art.

[0004] To achieve the above-mentioned purpose, the utility model provides an automatic liquid blocking device, including a mounting seat, the bottom end of the mounting seat is vertically connected to a slide rail, one side of the slide rail is slidably connected to a slide plate, a driving member 1 and a liquid suction component are installed on the slide plate, the driving member 1 is in transmission cooperation with the liquid suction component, a trigger member and a liquid blocking component are provided on the other side of the slide rail, the trigger member is slidably connected to the slide rail, and the trigger member is provided above the liquid blocking component, the trigger member is used to control the distance between the liquid blocking end of the liquid blocking component and the liquid suction end of the liquid suction component, a driving member 2 is provided on the mounting seat, and the trigger member and the slide plate are both synchronously transmitted and cooperated with the driving member 2.

[0005] Preferably, the liquid pipetting assembly includes an elastic rubber cap and a suction head vertically connected to the slide, the elastic rubber cap is connected to the top of the suction head, and the output end of the driving member 1 is in friction contact with the elastic rubber cap.

[0006] Preferably, the driving member 1 includes a ball screw motor connected to the skateboard, a pressure head is threadedly connected to the screw rod of the ball screw motor, one side of the pressure head is slidably connected to the skateboard, and the pressure head is in friction contact with the elastic rubber cap.

[0007] Preferably, the second driving member is a trapezoidal screw motor installed at the bottom end of the mounting seat, the top end of the trigger member is threadedly connected to the screw of the trapezoidal screw motor, and the trigger member is connected to the slide.

[0008] Preferably, the liquid blocking assembly includes a horizontal adjustment bracket connected to the bottom end of the slide rail, a pressure plate is slidably connected to the horizontal adjustment bracket, the bottom end of the pressure plate is connected to a liquid blocking plate, the liquid blocking plate is an L-shaped structure, the horizontal section of the liquid blocking plate is located below the suction head, a spring is provided in the horizontal adjustment bracket, one end of the spring is fixedly connected to an end of the horizontal adjustment bracket away from the slide rail, and the other end of the spring abuts against the pressure plate.

[0009] Preferably, the trigger member is a slider threadedly connected to the lead screw of the trapezoidal lead screw motor, the slider is slidably connected to the slide rail, and the slider is fixedly connected to the slide plate, and the bottom end of the slider is a wedge-shaped structure.

[0010] Compared with the prior art, the present invention has the following advantages and technical effects:

[0011] The utility model provides an automatic liquid blocking device, which drives the slide plate and the trigger member to move downward synchronously along the vertical direction of the slide rail through the provided driving member 2, and makes the bottom end of the trigger member contact with the liquid blocking component. At this time, the liquid suction end of the liquid suction component on the slide plate approaches the liquid surface, and then the driving member 2 continues to drive the slide plate and the trigger member to continue to move downward synchronously, and the trigger member causes the liquid blocking end of the liquid blocking plate assembly to move horizontally and deviate from the bottom of the liquid suction end, and then the liquid suction end extends into the liquid surface, and the liquid suction end is driven by the driving member 1 to complete the absorption of the target liquid; the driving member 2 is controlled to drive in the reverse direction, the slide plate and the trigger member move upward synchronously, the liquid suction end is separated from the liquid surface, the liquid blocking end of the liquid blocking plate assembly is reset, and is exactly under the liquid suction end, so as to block and collect the liquid dripping from the liquid suction end to prevent it from dripping onto other objects and causing pollution.

[0012] This utility model has a compact design and does not take up additional space. It is suitable for integration into various automated liquid handling systems, reducing sample waste and the cost of redoing experiments due to cross-contamination, improving the efficiency of liquid extraction, enhancing user experience, and having wide applicability and scalability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work:

[0014] Figure 1 This is a structural schematic diagram of an automatic liquid blocking device proposed by the utility model;

[0015] Among them: 1. Ball screw motor; 2. Trapezoidal screw motor; 3. Elastic rubber cap; 4. Slider; 5. Suction head; 6. Horizontal adjustment bracket; 7. Liquid baffle; 8. Mounting seat; 9. Slide rail; 10. Slide plate; 11. Pressure head; 12. Pressure plate; 13. Spring. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0018] Reference Figure 1 As shown, the utility model provides an automatic liquid blocking device, including a mounting seat 8, the bottom end of the mounting seat 8 is vertically connected to a slide rail 9, one side of the slide rail 9 is slidably connected to a slide plate 10, a driving member 1 and a liquid suction component are installed on the slide plate 10, the driving member 1 is in transmission cooperation with the liquid suction component, a trigger member and a liquid blocking component are provided on the other side of the slide rail 9, the trigger member is slidably connected to the slide rail 9, and the trigger member is provided above the liquid blocking component, the trigger member is used to control the distance between the liquid blocking end of the liquid blocking component and the liquid suction end of the liquid suction component, a driving member 2 is provided on the mounting seat 8, and the trigger member and the slide plate 10 are both synchronously transmitted and cooperated with the driving member 2.

[0019] In this embodiment, the ball screw motor 1 is a G28EC ball screw motor, and the trapezoidal screw motor 2 is a 35H0505 trapezoidal screw motor, both of which are commercially available.

[0020] The second driving member is provided to drive the slide plate 10 and the trigger member to move downward synchronously along the vertical direction of the slide rail 9, and make the bottom end of the trigger member contact with the liquid blocking assembly. At this time, the liquid suction end of the liquid suction assembly on the slide plate 10 is close to the liquid surface, and then the second driving member continues to drive the slide plate 10 and the trigger member to continue to move downward synchronously. The trigger member makes the liquid blocking end of the liquid baffle assembly move horizontally and deviate from the bottom of the liquid suction end, and then the liquid suction end extends into the liquid surface, and the liquid suction assembly is driven by the first driving member to complete the absorption of the target liquid; the second driving member is controlled to drive in the opposite direction, the slide plate 10 and the trigger member move upward synchronously, the liquid suction end is separated from the liquid surface, the liquid blocking end of the liquid baffle assembly is reset, and is just below the liquid suction end, so as to block and collect the liquid dripping from the liquid suction end to prevent it from dripping onto other objects and causing pollution.

[0021] Furthermore, the liquid-absorbing component includes an elastic rubber cap 3 and a suction head 5 vertically connected to the slide 10 . The elastic rubber cap 3 is connected to the top of the suction head 5 , and the output end of the driving member 1 is in friction contact with the elastic rubber cap 3 .

[0022] The elastic rubber cap 3 is squeezed by the output end of the driving member 1 to generate negative pressure inside the elastic rubber cap 3 , and the suction of the target liquid is achieved under the guidance of the suction head 5 .

[0023] Furthermore, the driving component 1 includes a ball screw motor 1 connected to the skateboard 10, and a pressure head 11 is threadedly connected to the screw of the ball screw motor 1. One side of the pressure head 11 is slidably connected to the skateboard 10, and the pressure head 11 is in friction contact with the elastic rubber cap 3.

[0024] By rotating the ball screw motor 1, the pressure head 11 threadedly connected to the screw of the ball screw motor 1 and the limiting action of the slide 10 move along the slide 10, and the pressure head 11 is pressed against the elastic rubber cap 3, so that negative pressure is generated inside the elastic rubber cap 3, and under the guiding action of the suction head 5, the target liquid is sucked. It should be noted that the pressure head 11 squeezes the elastic rubber cap 3 to form a negative pressure inside the elastic rubber cap 3. As the pressure head 11 rises, the elastic rubber cap 3 gradually returns to its original state, thereby achieving the absorption of the liquid.

[0025] Furthermore, the second driving member is a trapezoidal screw motor 2 installed at the bottom end of the mounting seat 8 , the top end of the trigger member is threadedly connected to the screw of the trapezoidal screw motor 2 , and the trigger member is connected to the slide 10 .

[0026] The trapezoidal lead screw motor 2 rotates, and the triggering member is threadedly connected to the lead screw on the trapezoidal lead screw motor 2 . Under the guidance of the slide rail 9 , the triggering member drives the slide plate 10 to move synchronously along the slide rail 9 .

[0027] Furthermore, the liquid blocking assembly includes a horizontal adjustment bracket 6 connected to the bottom end of the slide rail 9, a pressure plate 12 is slidably connected to the horizontal adjustment bracket 6, the bottom end of the pressure plate 12 is connected to the liquid blocking plate 7, the liquid blocking plate 7 is an L-shaped structure, and the horizontal section of the liquid blocking plate 7 is located below the suction head 5. A spring 13 is provided in the horizontal adjustment bracket 6, one end of the spring 13 is fixedly connected to the end of the horizontal adjustment bracket 6 away from the slide rail 9, and the other end of the spring 13 is in contact with the pressure plate 12.

[0028] Furthermore, the triggering member is a slider 4 threadedly connected to the lead screw of the trapezoidal lead screw motor 2, the slider 4 is slidably connected to the slide rail 9, and the slider 4 is fixedly connected to the slide plate 10, and the bottom end of the slider 4 is a wedge-shaped structure.

[0029] When the slider 4 moves downward, the wedge-shaped structure at the bottom end of the downward-moving slider 4 squeezes the pressure plate 12 laterally, and the pressure plate 12 drives the liquid baffle plate 7 to overcome the elastic force of the spring 13 and move along the horizontal adjustment bracket 6 away from the suction head 5, so that the liquid blocking section of the liquid baffle plate 7 deviates from the bottom of the suction head 5 and no longer blocks the suction head 5, making it convenient for the suction head 5 to extend into the target liquid surface. When the liquid absorption is completed, the slider 4 moves upward along the slide rail 9 under the drive of the trapezoidal screw motor 2, and the wedge-shaped end of the slider 4 gradually separates from the pressure plate 12, and the pressure plate 12 drives the liquid baffle plate 7 to reset under the action of the rebound force of the spring 13. At this time, the liquid blocking section of the liquid baffle plate 7 is just below the suction head 5, collecting the dripping liquid to prevent it from dripping onto other objects and causing pollution.

[0030] The automatic liquid blocking device provided by the present invention has a working principle: when in use, the trapezoidal screw motor 2 is started, the trapezoidal screw motor 2 rotates, and the slider 4 drives the slide plate 10 to move downward synchronously along the slide rail 9 under the joint action of the screw on the trapezoidal screw motor 2 and the slide rail 9, and the wedge-shaped end of the slider 4 moving downward contacts the pressure plate 12 and is inserted into the gap between the pressure plate 12 and the slide rail 9, and the pressure plate 12 drives the liquid blocking plate 7 to overcome the elastic force of the spring 13 and move along the horizontal adjustment bracket 6 away from the suction head 5, so that the liquid blocking section of the liquid blocking plate 7 deviates from the bottom of the suction head 5, no longer blocking the suction head 5, and facilitating the suction head 5 to extend into the target liquid surface, and then, the ball screw motor 1 is started, and the pressure head 1 Under the action of the screw rod and slide plate 10 on the ball screw motor 1, the slide plate 10 moves along the slide plate 10, and the pressure head 11 presses against the elastic rubber cap 3, so that negative pressure is generated inside the elastic rubber cap 3. Under the guidance of the suction head 5, the target liquid is sucked. Then the trapezoidal screw motor 2 rotates in the opposite direction, and the slide plate 10 and the slider 4 move upward along the slide rail 9. The slide plate 10 drives the suction head 5 to separate from the liquid surface, and the wedge-shaped end of the slider 4 gradually separates from the pressure plate 12. The pressure plate 12 drives the liquid baffle 7 to return to its original position under the rebound force of the spring 13. At this time, the liquid baffle section of the liquid baffle 7 is directly below the suction head 5, collecting the dripping liquid to prevent it from dripping onto other objects and causing contamination, thereby completing the liquid extraction operation.

[0031] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0032] The above are only preferred specific implementation methods of the present application, but the scope of protection of the present application is not limited thereto. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in this application should be covered by the scope of protection of the present application.

Claims

1. An automatic liquid blocking device, characterized in that: The utility model comprises a mounting seat (8), the bottom end of the mounting seat (8) is vertically connected to a slide rail (9), one side of the slide rail (9) is slidably connected to a slide plate (10), a driving member 1 and a liquid suction component are installed on the slide plate (10), the driving member 1 is in transmission cooperation with the liquid suction component, a triggering member and a liquid blocking component are provided on the other side of the slide rail (9), the triggering member is slidably connected to the slide rail (9), and the triggering member is provided above the liquid blocking component, the triggering member is used to control the distance between the liquid blocking end of the liquid blocking component and the liquid suction end of the liquid suction component, a driving member 2 is provided on the mounting seat (8), and the triggering member and the slide plate (10) are both synchronously transmitted and cooperated with the driving member 2.

2. The automatic liquid blocking device according to claim 1, characterized in that: The liquid suction component comprises an elastic rubber cap (3) and a suction head (5) vertically connected to the slide (10); the elastic rubber cap (3) is connected to the top end of the suction head (5); and the output end of the driving member 1 is in frictional contact with the elastic rubber cap (3).

3. The automatic liquid blocking device according to claim 2, characterized in that: The driving member 1 comprises a ball screw motor (1) connected to the slide plate (10), a screw rod of the ball screw motor (1) is threadedly connected to a pressure head (11), one side of the pressure head (11) is slidably connected to the slide plate (10), and the pressure head (11) is in frictional contact with the elastic rubber cap (3).

4. The automatic liquid blocking device according to claim 1, characterized in that: The second driving member is a trapezoidal screw motor (2) mounted on the bottom end of the mounting seat (8), the top end of the trigger member is threadedly connected to the screw of the trapezoidal screw motor (2), and the trigger member is connected to the slide plate (10).

5. The automatic liquid blocking device according to claim 2, characterized in that: The liquid blocking assembly includes a horizontal adjustment bracket (6) connected to the bottom end of the slide rail (9), a pressure plate (12) is slidably connected to the horizontal adjustment bracket (6), the bottom end of the pressure plate (12) is connected to a liquid blocking plate (7), the liquid blocking plate (7) is an L-shaped structure, and the horizontal section of the liquid blocking plate (7) is located below the suction head (5), a spring (13) is provided in the horizontal adjustment bracket (6), one end of the spring (13) is fixedly connected to one end of the horizontal adjustment bracket (6) away from the slide rail (9), and the other end of the spring (13) is in contact with the pressure plate (12).

6. The automatic liquid blocking device according to claim 4, characterized in that: The triggering member is a slider (4) threadedly connected to the screw of the trapezoidal screw motor (2), the slider (4) is slidably connected to the slide rail (9), and the slider (4) is fixedly connected to the slide plate (10), and the bottom end of the slider (4) is a wedge-shaped structure.

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