High-precision liquid injection instrument

Abstract

The utility model relates to the related field of precise instruments, in particular to a high-precision liquid injection instrument. The steel plate welding positioning device comprises a base, an injector base, supports, a driver, a push-pull structure and an injector structure, the injector base is arranged above the base, the push-pull structure is arranged between the base and the injector base, the supports are arranged on the periphery of the push-pull structure, the driver is arranged on one side of the push-pull structure, and the injector structure is arranged on the other side of the push-pull structure. The driver is connected with the push-pull structure through a gear assembly, an injector structure is arranged above the injector base, and one end of the push-pull structure penetrates through the injector base to be connected with the injector structure. According to the injection device, the mode that the driver drives the lead screw to conduct transmission is adopted in the injection mode, the injection liquid dosage can be accurately controlled, the injector structure is convenient to replace, the injection precision can be conveniently adjusted according to different scenes, and the influence of factors such as the skill level of operators on the precision and stability of the liquid injection device can be effectively relieved.

Description

Technical Field

[0001] The utility model relates to the field of precision instruments, in particular to a high-precision liquid injection instrument. Background Art

[0002] High-precision liquid syringes are liquid handling instruments widely used in metering, transfer, dispensing, liquid injection and other operations. These instruments include manual and electric pipettes, multi-channel pipettes, bottle-mouth dispensers, pipette controllers, continuous dispensers, continuous syringes, etc. These products and their accessory systems can achieve multiple liquid handling functions, thus forming a complete liquid handling solution.

[0003] High-precision liquid syringes are widely used in scientific research, medical treatment, biotechnology, pharmaceuticals, chemical analysis and other fields. For example, in scientific research laboratories, these instruments are used to accurately measure and dispense various liquid reagents to ensure the accuracy of experimental results. In the medical field, high-precision liquid syringes are used for drug injection, blood sampling and other operations to ensure patient safety and treatment effects.

[0004] Although high-precision liquid syringes are widely used in many fields, there are also some problems. First, the accuracy and stability of these instruments may be affected by factors such as the operator's skill level, the instrument's operating environment, and the instrument's maintenance. Secondly, these instruments are relatively expensive, which may cause certain economic pressure on some laboratories or medical institutions with limited funds. In addition, with the advancement of technology and the continuous improvement of application needs, the performance and functions of high-precision liquid syringes also need to be continuously updated and improved. Utility Model Content

[0005] The purpose of the utility model is to provide a high-precision liquid injection instrument to address the defects that the accuracy and stability of the liquid injection instrument may be affected by factors such as the operator's skill level, the instrument usage environment, and the instrument maintenance situation. To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A high-precision liquid injection instrument comprises a base, a syringe seat, a bracket, a driver, a push-pull structure, and a syringe structure. The syringe seat is arranged above the base, the push-pull structure is arranged between the base and the syringe seat, a number of brackets are arranged around the push-pull structure, a driver is arranged on one side of the push-pull structure, the driver is connected to the push-pull structure through a gear assembly, the syringe structure is arranged above the syringe seat, and one end of the push-pull structure passes through the syringe seat and is connected to the syringe structure.

[0007] Furthermore, the push-pull structure includes a driving screw, a lifting sleeve, and a positioning plate. The lifting sleeve is sleeved on the outer side of the driving screw, and a positioning plate is provided below the lifting sleeve. The driving screw passes through the positioning plate and is threadedly connected to the lifting sleeve. The lower part of the driving screw is rotatably connected to the base, and the lower end of the positioning plate is fixedly connected to the base.

[0008] Furthermore, the syringe structure includes a sleeve, a piston head, and a piston shaft. The upper end of the lifting sleeve passes through the syringe seat and is connected to the piston shaft. The upper end of the piston shaft is provided with a piston head, and the outer side of the piston head is sleeved with a sleeve.

[0009] Furthermore, a limiting column is provided on the piston shaft, and a T-shaped groove is provided on the lifting sleeve, and the limiting column and the T-shaped groove are matched with each other in structure.

[0010] Furthermore, a sealing ring is provided between the syringe structure and the syringe seat.

[0011] Furthermore, a threaded cover is sleeved on the outer side of the syringe structure, and the syringe structure is connected to the syringe seat through the threaded cover.

[0012] The positive progressive effect of the utility model is that the device adopts the form of driver-driven screw transmission for push injection, which can accurately control the injection liquid dosage, and the easy-to-replace syringe structure makes it convenient to adjust the injection accuracy for different scenarios, and can effectively alleviate the influence of factors such as the operator's skill level on the accuracy and stability of the liquid injector. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the front view of the high-precision liquid injection instrument of the utility model.

[0014] Figure 2 This is a disassembled view of the high-precision liquid injection instrument of the utility model.

[0015] Figure 3 It is a cross-sectional view of the high-precision liquid injection instrument of the utility model.

[0016] Figure 4 This is a part of the structure of the high-precision liquid injection instrument of the utility model. Figure 1 .

[0017] Figure 5 This is a part of the structure of the high-precision liquid injection instrument of the utility model. Figure 2 .

[0018] Explanation of the accompanying drawings: base 1, syringe seat 2, bracket 3, driver 4, push-pull structure 5, syringe structure 6, gear assembly 7, drive screw 8, lifting sleeve 9, positioning plate 10, sleeve 11, piston head 12, piston shaft 13, limit column 14, T-groove 15, sealing ring 16, threaded cover 17. DETAILED DESCRIPTION

[0019] The present invention will be described more clearly and completely below by way of embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments.

[0020] like Figure 1-5 As shown, a high-precision liquid injection instrument includes a base 1, a syringe seat 2, a bracket 3, a driver 4, a push-pull structure 5, and a syringe structure 6;

[0021] A syringe seat 2 is provided above the base 1, a push-pull structure 5 is provided between the base 1 and the syringe seat 2, a plurality of brackets 3 are provided around the push-pull structure 5, a driver 4 is provided on one side of the push-pull structure 5, the driver 4 is connected to the push-pull structure 5 through a gear assembly 7, a syringe structure 6 is provided above the syringe seat 2, and one end of the push-pull structure 5 passes through the syringe seat 2 and is connected to the syringe structure 6.

[0022] The push-pull structure 5 includes a driving screw 8, a lifting sleeve 9, and a positioning plate 10. The lifting sleeve 9 is sleeved on the outer side of the driving screw 8, and a positioning plate 10 is provided below the lifting sleeve 9. The driving screw 8 passes through the positioning plate 10 and is threadedly connected to the lifting sleeve 9. The lower part of the driving screw 8 is rotatably connected to the base 1, and the lower end of the positioning plate 10 is fixedly connected to the base 1.

[0023] The driving screw 8 is positioned by the base 1 and the positioning plate 10 to ensure the accuracy of the equipment.

[0024] The driver 4 is mainly a high-precision motor, which drives the drive screw 8 to rotate through the cooperation of a gear assembly 7 composed of a partial gear structure 1 on the high-precision motor drive shaft and a partial gear structure 2 provided on the drive screw 8.

[0025] The syringe structure 6 includes a sleeve 11, a piston head 12, and a piston shaft 13. The upper end of the lifting sleeve 9 passes through the syringe seat 2 and is connected to the piston shaft 13. The upper end of the piston shaft 13 is provided with a piston head 12, and the sleeve 11 is sleeved on the outer side of the piston head 12. The driving screw 8 passes through the positioning plate 10 and is threadedly connected to the lifting sleeve 9, so that the lifting sleeve 9 can perform lifting and lowering motion under the action of the threaded structure, wherein the piston head 12 and part of the structure of the syringe seat 2 can effectively limit the lifting sleeve 9 to perform rotational motion.

[0026] The piston shaft 13 is provided with a limit column 14, and the lifting sleeve 9 is provided with a T-shaped groove 15, and the limit column 14 and the T-shaped groove 15 are matched with each other, so that the syringe structure 6 can be easily disassembled and replaced.

[0027] A sealing ring 16 is provided between the syringe structure 6 and the syringe seat 2. The sealing ring 16 can effectively prevent the structure from loosening and ensure the structural accuracy of the device.

[0028] The outer side of the syringe structure 6 is sleeved with a threaded cover 17, and the syringe structure 6 is connected to the syringe seat 2 through the threaded cover 17. The threaded cover 17 is used for external fixation, and the overall structure is simple and easy to use.

[0029] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A high-precision liquid injection instrument, characterized in that: It includes a base, a syringe seat, a bracket, a driver, a push-pull structure, and a syringe structure. The syringe seat is arranged above the base, the push-pull structure is arranged between the base and the syringe seat, a number of brackets are arranged around the push-pull structure, a driver is arranged on one side of the push-pull structure, the driver is connected to the push-pull structure through a gear assembly, the syringe structure is arranged above the syringe seat, and one end of the push-pull structure passes through the syringe seat and is connected to the syringe structure.

2. A high-precision liquid injection instrument as claimed in claim 1, characterized in that: The push-pull structure includes a driving screw, a lifting sleeve, and a positioning plate. The lifting sleeve is sleeved on the outer side of the driving screw, and a positioning plate is provided below the lifting sleeve. The driving screw passes through the positioning plate and is threadedly connected to the lifting sleeve. The lower part of the driving screw is rotatably connected to the base, and the lower end of the positioning plate is fixedly connected to the base.

3. A high-precision liquid injection instrument as claimed in claim 2, characterized in that: The syringe structure comprises a sleeve, a piston head and a piston shaft. The upper end of the lifting sleeve passes through the syringe seat and is connected to the piston shaft. The upper end of the piston shaft is provided with a piston head, and the outer side of the piston head is sleeved with a sleeve.

4. A high-precision liquid injection instrument as claimed in claim 3, characterized in that: The piston shaft is provided with a limiting column, the lifting sleeve is provided with a T-shaped groove, and the limiting column and the T-shaped groove are matched with each other in structure.

5. A high-precision liquid injection instrument as claimed in claim 4, characterized in that: A sealing ring is arranged between the syringe structure and the syringe seat.

6. A high-precision liquid injection instrument as claimed in claim 5, characterized in that: A threaded cover is sleeved on the outer side of the syringe structure, and the syringe structure is connected to the syringe seat through the threaded cover.

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