Suction dropper capable of quantitatively taking liquid

Abstract

The utility model belongs to the technical field of liquid taking instruments, and particularly relates to a drip suction head capable of quantitatively taking liquid, which comprises a liquid suction tube, a quantitative tube is slidably arranged at the inner top of the liquid suction tube in a penetrating manner, an air bag is fixedly sleeved at the top end of the quantitative tube, and a piston ring is fixedly sleeved on the outer surface of the bottom of the quantitative tube. A water blocking film core is fixedly installed at the inner bottom of the quantitative tube, a locking assembly used for locking the quantitative tube is installed at the top of the liquid suction tube, a piston ring at the bottom of the quantitative tube is located on a quantitative scale line where quantitative liquid taking is needed, then the quantitative tube and the liquid suction tube are fixed through the locking assembly, and then a person can press an air bag to conduct quantitative liquid taking. Under the waterproof and breathable effects of the water-blocking film core, the sucked reagent liquid just reaches the bottom surface of the quantitative tube, so that quantitative liquid taking is realized, the suction amount of the reagent liquid is convenient to control, the experiment accuracy is improved, the waste of the solution reagent is not easy to cause, and the use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid taking instruments, in particular to a dripping head capable of quantitatively taking liquid. Background Art

[0002] The dropper is a widely used quantitative pipette, which includes a dropper, a cap and a reagent cup, a three-piece detachable quantitative liquid suction and dripping device; when in use, the capillary arranged at the bottom of the dropper can be used to suck the liquid in, and after the sucked liquid is evenly mixed with the solvent in the reagent cup, the liquid can be discharged from the top of the dropper, for example, onto a slide for detailed observation.

[0003] When using a dropper, personnel squeeze the rubber head on the head of the dropper with their thumb and index finger to absorb and squeeze out the liquid. However, when pressing the rubber head, it is difficult to control the amount of reagent sucked in, and the liquid cannot be accurately and quantitatively taken out, which affects the accuracy of the experiment and easily causes waste of solution reagents. It is very inconvenient to use. In order to facilitate the quantitative liquid extraction of the dropper of the dropper, we propose a dropper that can quantitatively extract liquid. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a dripper capable of quantitatively taking liquid, so that the piston ring at the bottom of the quantitative tube is located on the quantitative scale line where quantitative liquid taking is required, and then the quantitative tube and the pipette are fixed in position by a locking assembly, and then a person can press the airbag, and under the waterproof and breathable effect of the water-blocking membrane core, the sucked reagent liquid will just reach the bottom surface of the quantitative tube, thereby realizing quantitative liquid taking, facilitating the control of the suction amount of the reagent liquid, improving the accuracy of the experiment, and not easily causing waste of solution reagents. It is easy to use and solves the background problem.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A dripper capable of quantitatively taking liquid comprises a pipette, a quantitative tube is slidably penetrated through the inner top of the pipette, an air bag is fixedly sleeved on the top of the quantitative tube, a piston ring is fixedly sleeved on the outer surface of the bottom of the quantitative tube, the piston ring is slidably connected to the inside of the pipette, a water-blocking film core is fixedly installed on the inner bottom of the quantitative tube, a suction head is fixedly connected to the bottom of the pipette, and a locking component for locking the quantitative tube is installed on the top of the pipette.

[0007] Preferably, the locking assembly comprises a fixing sleeve, which is fixedly sleeved on the top outer surface of the pipette, the outer surface of the fixing sleeve is threadedly screwed with a locking sleeve, and the top of the fixing sleeve is fixedly connected with a plurality of annularly distributed positioning blocks.

[0008] Preferably, the interior of the fixing sleeve is fixedly connected with a limiting ring.

[0009] Preferably, the water-blocking membrane core comprises a mounting sleeve, and a plurality of groups of waterproof and breathable membranes are mounted inside the mounting sleeve.

[0010] Preferably, the outer surface of the pipette is provided with quantitative scale lines.

[0011] Preferably, the pipette and quantitative tube are both made of transparent glass, the fixing sleeve, locking sleeve and positioning block are all made of plastic, the inner side of the positioning block is provided with anti-slip patterns, and the outer surface of the locking sleeve is provided with friction patterns. Beneficial Effects

[0012] The utility model provides a dripper capable of quantitatively taking liquid. Compared with the prior art, it has the following beneficial effects:

[0013] 1. A dropper capable of quantitatively taking liquid. When taking liquid quantitatively, first slide the quantitative tube up and down so that the piston ring at the bottom of the quantitative tube is located on the quantitative scale line where quantitative liquid taking is required. Then, the position of the quantitative tube and the liquid pipette is fixed by the locking component. Then, the personnel can press the airbag. Under the waterproof and breathable effect of the water-blocking membrane core, the absorbed reagent liquid will just reach the bottom surface of the quantitative tube, thereby realizing quantitative liquid taking, facilitating the control of the suction amount of the reagent liquid, improving the accuracy of the experiment, and not easily causing waste of solution reagents. It is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the front view structure of the main body of the utility model;

[0015] Figure 2 It is a schematic diagram of the split structure of the main body of the utility model;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the main body of the utility model;

[0017] Figure 4 For the utility model Figure 3 A schematic diagram of the structure enlargement in the middle;

[0018] Figure 5 For the utility model Figure 3 Enlarged schematic diagram of the structure at point B in the middle.

[0019] In the figure: 1. air bag; 2. quantitative tube; 3. piston ring; 4. quantitative scale line; 5. pipette; 6. water-blocking membrane core; 7. locking sleeve; 8. positioning block; 9. fixing sleeve; 10. limiting ring; 11. suction head. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-5 The utility model provides a technical solution: a suction dripper capable of quantitatively taking liquid, comprising a pipette 5, a quantitative tube 2 is slidably penetrated through the inner top of the pipette 5, an air bag 1 is fixedly sleeved on the top of the quantitative tube 2, a piston ring 3 is fixedly sleeved on the outer surface of the bottom of the quantitative tube 2, the piston ring 3 is slidably connected to the inside of the pipette 5, a water-blocking film core 6 is fixedly installed on the inner bottom of the quantitative tube 2, a suction head 11 is fixedly connected to the bottom of the pipette 5, a locking component for locking the quantitative tube 2 is installed on the top of the pipette 5; a quantitative scale line 4 is arranged on the outer surface of the pipette 5.

[0022] When quantitative liquid is taken, first slide the quantitative tube 2 up and down so that the piston ring 3 at the bottom of the quantitative tube 2 is located on the quantitative scale line 4 where quantitative liquid needs to be taken. Then, the quantitative tube 2 and the pipette 5 are fixed by the locking assembly. Then, the person can press the airbag 1. Under the waterproof and breathable effect of the water-blocking membrane core 6, the absorbed reagent liquid will just reach the bottom surface of the quantitative tube 2, thereby realizing quantitative liquid taking, making it convenient to control the amount of reagent liquid sucked in, improving the accuracy of the experiment, and not easily causing waste of solution reagents. It is easy to use.

[0023] The locking assembly comprises a fixing sleeve 9 which is fixedly sleeved on the top outer surface of the pipette 5 , a locking sleeve 7 is screwed on the outer surface of the fixing sleeve 9 , and a plurality of annularly distributed positioning blocks 8 are fixedly connected to the top of the fixing sleeve 9 .

[0024] When the locking assembly is used, the locking sleeve 7 is rotated, the locking sleeve 7 will move upward, and the cross-sectional area of ​​the positioning pressing block 8 will gradually increase from bottom to top. The locking sleeve 7 will drive the positioning pressing block 8 to move toward the quantitative tube 2, and a number of positioning pressing blocks 8 will press the quantitative tube 2, thereby achieving the fixation of the quantitative tube 2 and the pipette 5.

[0025] A limiting ring 10 is fixedly connected inside the fixing sleeve 9 , and the limiting ring 10 can prevent the quantitative tube 2 from being separated from the pipette 5 .

[0026] The water-blocking membrane core 6 comprises a mounting sleeve, and a plurality of groups of waterproof and breathable membranes are mounted inside the mounting sleeve. The waterproof and breathable membranes have the function of being waterproof and breathable.

[0027] The pipette 5 and the quantitative tube 2 are both made of transparent glass, the fixing sleeve 9, the locking sleeve 7 and the positioning block 8 are all made of plastic, the inner side of the positioning block 8 is provided with anti-slip patterns to improve the locking effect of the positioning block 8 on the quantitative tube 2, and the outer surface of the locking sleeve 7 is provided with friction patterns to increase the anti-slip ability of the locking sleeve 7.

[0028] Working principle: When quantitative liquid is taken, first slide the quantitative tube 2 up and down so that the piston ring 3 at the bottom of the quantitative tube 2 is located on the quantitative scale line 4 where quantitative liquid needs to be taken, and then rotate the locking sleeve 7, the locking sleeve 7 will move upward, and the cross-sectional area of ​​the positioning block 8 will gradually increase from bottom to top. The locking sleeve 7 will drive the positioning block 8 to move toward the quantitative tube 2, and several positioning blocks 8 will press the quantitative tube 2, thereby fixing the quantitative tube 2 and the pipette 5. Then the personnel can press the airbag 1, and under the waterproof and breathable effect of the waterproof and breathable membrane, the absorbed reagent liquid will just reach the bottom surface of the quantitative tube 2, thereby realizing quantitative liquid taking, facilitating the control of the suction amount of the reagent liquid, improving the accuracy of the experiment, and not easily causing waste of solution reagents, and convenient to use.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dripper capable of quantitatively taking liquid, comprising a liquid pipette (5), characterized in that: The top of the pipette (5) is slidably penetrated by a quantitative tube (2), the top of the quantitative tube (2) is fixedly sleeved with an air bag (1), the bottom outer surface of the quantitative tube (2) is fixedly sleeved with a piston ring (3), the piston ring (3) is slidably connected to the inside of the pipette (5), the bottom of the quantitative tube (2) is fixedly mounted with a water-blocking film core (6), the bottom of the pipette (5) is fixedly connected with a suction head (11), and the top of the pipette (5) is mounted with a locking component for locking the quantitative tube (2).

2. A dripper capable of quantitatively taking liquid according to claim 1, characterized in that: The locking assembly comprises a fixing sleeve (9), the fixing sleeve (9) being fixedly sleeved on the top outer surface of the pipette (5), the outer surface of the fixing sleeve (9) being threadedly screwed with a locking sleeve (7), and the top of the fixing sleeve (9) being fixedly connected with a plurality of annularly distributed positioning pressing blocks (8).

3. A dripper capable of quantitatively taking liquid according to claim 2, characterized in that: The interior of the fixing sleeve (9) is fixedly connected to a limiting ring (10).

4. A dripper capable of quantitatively taking liquid according to claim 3, characterized in that: The water-blocking membrane core (6) comprises a mounting sleeve, and a plurality of groups of waterproof and breathable membranes are mounted inside the mounting sleeve.

5. A dripper capable of quantitatively taking liquid according to claim 4, characterized in that: The outer surface of the pipette (5) is provided with quantitative scale lines (4).

6. A dripper capable of quantitatively taking liquid according to claim 5, characterized in that: The liquid pipette (5) and the quantitative tube (2) are both made of transparent glass, the fixing sleeve (9), the locking sleeve (7) and the positioning block (8) are all made of plastic, the inner side of the positioning block (8) is provided with anti-slip patterns, and the outer surface of the locking sleeve (7) is provided with friction patterns.

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