Liquid taking device

Abstract

The utility model discloses a liquid extracting device which comprises a shell, a piston capable of moving up and down and a moving rod, the piston is driven by the moving rod to extract and release liquid, and the lower end of the shell is detachably connected with a liquid extracting pipe. The upper end of the moving rod is connected with a button which is in threaded connection with the moving rod, and scale marks are arranged on the side of the button for adjusting the liquid taking amount; the movable rod penetrates through the shell, the piston is reset through a reset spring, the upper end of the spring is connected with the rotating ring, and the lower end of the spring is connected with the check ring; a sponge breathable pad is arranged in the liquid taking pipe, so that liquid is prevented from overflowing or being polluted; a connecting pipe and a rubber pad are arranged between the shell and the liquid taking pipe to form reliable sealing; the quantitative liquid sample transfer device is compact in structure, convenient to operate, capable of achieving quantitative extraction and release of liquid, good in sealing performance and anti-pollution capacity and suitable for accurate transfer of various liquid samples.

Description

TECHNICAL FIELD

[0001] The utility model relates to quantitative liquid taking technical field, especially take liquid ware. BACKGROUND

[0002] In biomedical, inspection and detection and laboratory analysis and many technical fields, accurate sampling and quantitative subpackaging of liquid samples are common and important operation links. Traditional liquid taking tools such as pipette, syringe, dropper and the like generally have problems such as inconvenient operation, poor sampling precision, difficult unified adjustment of liquid taking amount, easy pollution of operation environment and the like in the use process, especially in the scene of high-precision or high-cleanliness requirement, it is often difficult to meet the actual demand.

[0003] Some existing liquid taking devices with adjustable sampling amount function have been optimized in structural design, but still have the following problems: first, the sampling amount adjusting mechanism is complex, and the adjusting precision is not high and difficult to position during use; second, the sealing performance is insufficient during the liquid taking process, and liquid leakage or leakage is prone to occur; third, when the equipment is tilted or operated improperly, the liquid in the liquid taking pipe is prone to backflow, causing pollution or waste.

[0004] For example, a kind of oral cavity quantitative liquid taking device with patent number CN222323681U is recorded, including negative pressure suction air bag and disposable liquid containing pipe, the bottom opening of negative pressure suction air bag and fixedly connected with connecting pipe;The liquid containing pipe is gradually reduced in diameter from lower part to upper part, and the connecting pipe part is provided with the top opening, and the opening is detachably connected with the lower end of connecting pipe, and the bottom of the conical part is provided with the pipe opening, and the liquid inlet pipe is connected with the pipe opening, and the lower end of the liquid inlet pipe extends downward by 5-8cm. When using, a certain amount of mouthwash is taken by pinching the negative pressure suction air bag, then the lower end of the liquid containing pipe is directed towards the oral cavity, and the air bag is released;The device can ensure low cost and safety, and does not need to be cleaned and disinfected repeatedly, which reduces the labor cost of medical staff. The above technical scheme can realize the taking of liquid, but the above technical scheme needs to slowly extract liquid manually to realize quantitative extraction of liquid, and the operation process is relatively slow. When quantitative multiple liquid taking is required for inspection, the time cost is greatly increased, and there is a certain error in manual observation of liquid taking amount, the application range is relatively narrow, and multiple rapid quantitative sampling operation cannot be realized.

[0005] In view of the above problems, a liquid taking device with reasonable structure, accurate liquid taking, flexible adjustment, reliable sealing and anti-pollution function is needed. UTILITY MODEL CONTENT

[0006] The utility model aims at overcoming the deficiencies in the prior art and providing a liquid taking device.

[0007] The utility model discloses a liquid taking device, including the casing, be provided with the piston that can move up and down in the casing, the piston can realize the extraction and release to liquid in the casing moves up and down, the lower side of casing is connected with the liquid taking pipe, and the detachable connection between liquid taking pipe and casing, the piston is connected with the moving link on, and the moving link can move up and down in the casing, and the piston moves up and down by moving link drive, the upper end of moving link is provided with the button, and the thread connection between button and moving link, the upper portion fixed setting of baffle ring in the casing, and the moving link can move up and down and pass through baffle ring, and the rotation between moving link and baffle ring cannot occur, and the reset mechanism is set up between baffle ring and button, and the quantitative liquid taking of piston is realized through reset mechanism.

[0008] Further, the button side is provided with a scale line, and the sampling amount of the liquid is adjusted through the scale line.

[0009] Further, the upper part of the outer side of the button is provided with a ring of protrusions, and the protrusions are provided to facilitate the rotation of the button.

[0010] When the liquid needs to be taken, the lower end of the connecting pipe is connected with the upper end of the liquid taking pipe by holding the casing, and the maximum moving distance of the piston in the living room is adjusted according to the amount of liquid to be taken, that is, the amount of liquid to be taken is adjusted by rotating the button, and the scale line on the button corresponds to the amount of liquid to be taken, and the knob is adjusted downward or upward according to the need, and the scale line on the upper end surface of the casing corresponds to the amount of liquid to be taken, and the scale line value increases from top to bottom, that is, the larger the distance of the button rotated downward, the smaller the amount of liquid to be taken.

[0011] By pressing the button downward to the lowermost end, the lower end of the button is attached to the baffle ring, and the baffle ring limits the button to avoid further downward movement; the lower end of the liquid taking pipe of the device is placed in the liquid to be taken, and the button is released, and the button moves upward to the uppermost end under the action of the spring (that is, the limiting ring is attached to the lower surface of the baffle ring, and the baffle ring limits the limiting ring to avoid further upward movement), and the piston moves upward when the button moves upward, and the liquid is extracted.

[0012] After the liquid is extracted, the liquid taking pipe is moved to the position where the liquid is to be placed, and then the button is pressed downward, and the liquid in the liquid taking pipe is discharged, realizing the quantitative extraction and transfer of the liquid.

[0013] Since the sponge air permeable pad is arranged in the liquid taking pipe, the liquid taking pipe or the device can be prevented from suddenly falling and causing the liquid in the liquid taking pipe to quickly overflow or the liquid in the liquid taking pipe to quickly pollute the lower end of the casing without affecting the air permeability, that is, without affecting the extraction of the liquid. Therefore, the sponge air permeable pad can prevent the liquid from quickly overflowing from the liquid taking pipe or the liquid in the liquid taking pipe from quickly polluting the lower end of the casing in case of sudden accidents.

[0014] The outer side of the lower end of the connecting pipe is a bevel structure, which can facilitate connection with the liquid taking pipe, and the inner side of the liquid taking pipe and the connecting pipe are connected to form a sealing mechanism.

[0015] Beneficial effects: The utility model has the following technical effects when in use:

[0016] 1. Realize accurate liquid taking: by setting the threaded connection structure of the button and the moving rod, combined with the scale line on the button, the piston stroke can be accurately adjusted, and then the liquid taking amount is controlled, meeting the needs of liquid quantitative suction in different experiments or use scenarios.

[0017] 2. Convenient operation and limiting protection: the cooperation of the button, the retaining ring, the spring and other components realizes reliable limiting of the button in the up-down direction, which not only ensures the smoothness of the liquid taking action, but also effectively avoids structural damage or liquid taking error caused by improper operation.

[0018] 3. Good sealing and anti-pollution performance: by setting the rubber pad and the connecting pipe with a bevel structure, reliable sealing between the liquid taking pipe and the shell is realized, avoiding liquid leakage. At the same time, the setting of the sponge breathable pad can not only ventilate, but also prevent liquid from overflowing and polluting the shell, improving the use safety.

[0019] 4. Strong structure versatility, easy to disassemble and clean: the detachable structure design of the liquid taking pipe facilitates replacement, improves the use flexibility, and is suitable for the extraction and transfer of various liquid samples.

[0020] In summary, the utility model can effectively improve the accuracy, safety and convenience of the liquid taking process, and has good popularization and application prospect 。 BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure schematic view of the utility model.

[0022] Figure 2 It is a partial structure sectional view of the liquid taking pipe of the utility model.

[0023] Figure 3 It is a structure schematic view of the shell of the utility model.

[0024] Figure 4 It is a partial structure sectional view of the shell of the utility model.

[0025] Figure 5 It is a partial structure schematic view of the utility model.

[0026] MARKING OF THE DRAWINGS:

[0027] 1. Housing, 2. Button, 3. Liquid dispensing tube, 4. Breathable sponge pad, 5. Scale line, 6. Rubber pad, 7. Connecting tube, 8. Protrusion, 9. Piston, 10. Spring, 11. Retaining ring, 12. Moving rod, 13. Limiting ring, 14. Rotating ring. Detailed Implementation

[0028] Example 1, as Figures 1-5 As shown, the purpose of this utility model is achieved as follows: A liquid dispenser includes a housing 1, inside which is a piston 9 that can move up and down. The piston 9 can extract and release liquid by moving up and down within the housing 1. A liquid dispensing tube 3 is connected to the lower part of the housing 1, and the liquid dispensing tube 3 is detachably connected to the housing 1. A moving rod 12 is connected to the piston 9, and the moving rod 12 can move up and down within the housing 1, thereby driving the piston 9 to move up and down. A button 2 is provided at the upper end of the moving rod 12, and the button 2 is threadedly connected to the moving rod 12. A retaining ring 11 is fixedly provided in the upper part of the housing 1, through which the moving rod 12 can move up and down. The moving rod 12 and the retaining ring 11 cannot rotate. A reset mechanism is provided between the retaining ring 11 and the button 2, and the reset mechanism is used to achieve quantitative liquid dispensing by the piston 9.

[0029] The button 2 has a scale line 5 on its side, which is used to adjust the liquid sampling volume. The upper part of the outer surface of the button 2 has a raised ring 8, which facilitates the rotation of the button 2.

[0030] The reset mechanism includes a spring 10, with a rotating ring 14 connected to its upper end. A rotating groove is formed inside the lower surface of the button 2. The upper end of the moving rod 12 passes through the rotating groove and connects to the button 2. The rotating ring 14 is rotatably located within the rotating groove and rotatably passes through the moving rod 12. When the spring 10 is compressed, it remains within the rotating groove, not affecting the contact between the lower end of the button 2 and the retaining ring 11. The lower end of the spring 10 is connected to the retaining ring 11, and a limit ring 13 is provided on the moving rod 12 below the retaining ring 11.

[0031] The lower part of the housing 1 has a conical structure, which facilitates connection with the liquid collection tube 3 and allows for easy observation of the liquid collection position. A connecting tube 7 is connected to one end of the housing 1, and the lower outer surface of the connecting tube 7 has a beveled structure. A rubber gasket 6 is provided on the upper part of the outer surface of the connecting tube 7. The lower part of the liquid collection tube 3 has a conical structure, and the upper interior of the liquid collection tube 3 is detachably and sealed to the connecting tube 7.

[0032] A breathable sponge pad 4 is provided in the upper part of the liquid collection tube 3 to temporarily prevent liquid from flowing directly to the outside of the liquid collection tube 3, causing contamination of the connecting tube 7 or causing liquid in the liquid collection tube 3 to overflow from the upper end of the liquid collection tube 3.

[0033] The utility model discloses a handheld device for taking liquid, which comprises a hand-held shell 1, a connecting pipe 7, a piston 9, a spring 10, a button 2, a scale line 5, a sponge air-permeable pad 4 and a liquid taking pipe 3.

[0034] By pressing the button 2 downward to the lowermost end, the lower end of the button 2 is attached to the stop ring 11, and the stop ring 11 limits the button 2 to avoid further downward movement. The lower end of the liquid taking pipe 3 of the device is placed in the liquid to be extracted, and the button 2 is released. The button 2 moves upward to the uppermost end under the elastic force of the spring 10 (i.e. the limiting ring 13 is attached to the lower surface of the stop ring 11, and the stop ring 11 limits the limiting ring 13 to avoid further upward movement). When the button 2 moves upward, the piston 9 moves upward, and the liquid is extracted.

[0035] After the liquid is extracted, the liquid taking pipe 3 is moved to the position where the liquid is to be placed, and the button 2 is pressed downward, and the liquid in the liquid taking pipe 3 is discharged, realizing the quantitative extraction and transfer of the liquid.

[0036] The sponge air-permeable pad 4 is provided in the liquid taking pipe 3, which can avoid the sudden tilting of the liquid taking pipe 3 or the device, causing the liquid in the liquid taking pipe 3 to quickly overflow or the liquid in the liquid taking pipe 3 to quickly pollute the lower end of the shell 1 without affecting the air permeability, i.e. without affecting the liquid extraction. Therefore, the sponge air-permeable pad 4 can avoid the sudden overflow of the liquid from the liquid taking pipe 3 or the quick pollution of the liquid in the liquid taking pipe 3 to the lower end of the shell 1 in case of unexpected situations.

[0037] The lower end of the connecting pipe 7 is provided with a beveled structure, which can facilitate the connection with the liquid taking pipe 3. The connection between the inner side of the liquid taking pipe 3 and the connecting pipe 7 is a sealing mechanism. The rubber pad 6 is provided between the liquid taking pipe 3 and the connecting pipe 7 after connection. The upper end surface of the liquid taking pipe 3 contacts the rubber pad 6, realizing the re-sealing effect between the liquid taking pipe 3 and the connecting pipe 7.

[0038] In the description of the utility model, need understanding is, the term "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and so on indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawing, just for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore can not be understood as the limitation of the utility model.

[0039] The above only is the preferred embodiment of the utility model, and does not limit the utility model, for the person skilled in the art, the utility model can have various changes and changes, any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A liquid dispenser, comprising a housing, characterized in that: The housing contains a piston that can move up and down. A liquid extraction tube is connected to the bottom of the housing and is detachably connected to the housing. A moving rod is connected to the piston and can move up and down within the housing, thereby driving the piston to move up and down. A button is provided at the upper end of the moving rod and is threadedly connected to the moving rod. A retaining ring is fixedly provided in the upper part of the housing and the moving rod can pass through the retaining ring. A reset mechanism is provided between the retaining ring and the button.

2. The liquid dispenser according to claim 1, characterized in that: The button has scale lines on its side.

3. The liquid dispenser according to claim 1, characterized in that: A raised ring is provided on the upper part of the outer surface of the button.

4. The liquid dispenser according to claim 1, characterized in that: The reset mechanism includes a spring, with a rotating ring connected to the upper end of the spring. A rotating groove is provided inside the lower end face of the button. The upper end of the moving rod passes through the rotating groove and is connected to the button. The rotating ring is rotatably located in the rotating groove and rotatably passes through the moving rod.

5. The liquid dispenser according to claim 4, characterized in that: The lower end of the spring is connected to the retaining ring, and a limit ring is provided on the moving rod below the retaining ring.

6. The liquid dispenser according to claim 1, characterized in that: The lower part of the shell has a conical structure.

7. A liquid dispenser according to claim 6, characterized in that: The shell end is connected to a connecting pipe, and the outer side of the lower end of the connecting pipe has a beveled structure.

8. The liquid dispenser according to claim 7, characterized in that: A rubber pad is provided on the upper part of the outer side of the connecting pipe.

9. A liquid dispenser according to claim 8, characterized in that: The lower part of the liquid collection tube has a conical structure, and the upper end of the liquid collection tube is detachably sealed to the connecting tube.

10. A liquid dispenser according to claim 1, characterized in that: A breathable sponge pad is installed in the upper part of the liquid collection tube.

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