CN207823052U - Novel drawing-in type liquid-transfering device - Google Patents
Novel drawing-in type liquid-transfering device Download PDFInfo
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- CN207823052U CN207823052U CN201721925121.2U CN201721925121U CN207823052U CN 207823052 U CN207823052 U CN 207823052U CN 201721925121 U CN201721925121 U CN 201721925121U CN 207823052 U CN207823052 U CN 207823052U
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- pull rod
- measuring pipet
- injection tube
- hollow cavity
- bottom end
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Abstract
The utility model discloses a kind of novel drawing-in type liquid-transfering devices, it includes injection mechanism, measuring pipet, magnetic one-way valve and magnet ring, injection mechanism includes injection tube, piston, push-pull rod, pull rod handle, movable push bar, press handle, reset helical spring and silica gel plug, the piston for being connected with push-pull rod is slidably installed in injection tube, it is arranged with adapter coupling on the injection interface of injection tube, push-pull rod is internally provided with hollow cavity, movable push bar is plugged in hollow cavity, the bottom end of movable push bar is equipped with silica gel plug, the madial wall of hollow cavity is equipped with limit baffle ring, helical spring is resetted to be set between pressing handle and limit baffle ring, the top port of measuring pipet is connect by adapter coupling with injection tube, measuring pipet is equipped with liquid storage cylinder；The position above the top end opening corresponding to liquid storage cylinder is arranged in the measuring pipet in magnetic one-way valve.The utility model need not block the nozzle of pipette in pipetting processes with index finger, and being capable of the required extractant of accurate measuring experiment.
Description
Technical field
The utility model is related to a kind of liquid-transfering devices, it particularly relates to which a kind of being used for environment measuring engineering experiment process
In quantitatively pipette the drawing-in type liquid-transfering device of organic extractant.
Background technology
Pipette is that solution for accurately measuring certain volume measures formula instrument, and dosage liquid is needed in environment measuring
Pipe quantitatively pipettes the organic extractant solution agent for gas or liquid detecting, and traditional method is the side by ear washing bulb air-breathing
Formula carries out taking liquid using measuring pipet.Pipette currently used for pipetting organic extractant solution agent is straight trip glass up and down
Pipette is placed in installation extractant to be pipetted by pipe, when use, by the way that the air in the ear washing bulb cavity of upper end is discharged with profit
With negative pressure absorbing extractant, when carrying out the pipetting of extractant by pipette in this way, often because of index finger
It operates immature or causes liquid relief to fail using fatigue, to need to make repeated attempts, operation and control difficulty is big, causes liquid relief inaccurate
Really.In addition, when the extractant in pipette is flow to end, the extractant drop being adsorbed on tube wall takes a long time ability completely
Outflow may result in liquid relief amount and little deviation occur if the remaining extractant drop of pipette inner tubal wall is not flow to end completely,
Experimental result inaccuracy is eventually led to, to influence environment measuring experimental analysis.Therefore, it is badly in need of design one kind and is utilizing pipette
Need not block the nozzle of pipette during liquid relief with index finger, and can be needed for accurate measuring experiment extractant, make
On liquid relief tube wall remaining extractant drop quickly blow off the novel drawing-in type liquid-transfering device of pipette.
Utility model content
For above deficiency, the utility model is provided a kind of need not be used during using pipette liquid relief and eaten
Refer to and block the nozzle of pipette, and can be needed for accurate measuring experiment extractant so that remaining extraction on liquid relief tube wall
Take agent drop quickly to blow off the novel drawing-in type liquid-transfering device of pipette, it include injection mechanism, measuring pipet, magnetic one-way valve and
Magnet ring, the injection mechanism include injection tube, piston, push-pull rod, pull rod handle, movable push bar, pressing handle, reset spiral bullet
Spring and silica gel plug, the piston are slidably installed in the circular cylinder intracavitary of the injection tube, and the bottom end of the push-pull rod is fixedly connected on
On the upper surface of the piston, the one end of the push-pull rod far from piston is equipped with pull rod handle, and the bottom end of the injection tube is equipped with
Interface is injected, the adapter coupling for being tightly connected with the measuring pipet top end opening is arranged on the injection interface, it is described
Push-pull rod is internally provided with the hollow cavity extended along push-pull rod length direction, and the movable push bar is plugged in the hollow cavity
Interior, the bottom end of the movable push bar is fixedly connected with silica gel plug, and the bottom end that the hollow cavity is corresponded on the piston is opened
The position of mouth, which is equipped with, allows the freely through through-hole of silica gel plug, the bottom end opening of the silica gel plug and the hollow cavity close
The top of envelope cooperation, the movable push bar is fixedly connected with pressing handle, and the madial wall of the hollow cavity is equipped with limiting block
Ring, the reset helical spring are set on movable push bar, and the reset helical spring be located at the pressing handle with it is described
Between limit baffle ring, screens bulge loop is equipped with corresponding to the lower position of the limit baffle ring on the movable push bar；The amount liquid
The top port of pipe is connect by the adapter coupling with the injection sealing joint of the injection tube, and the measuring pipet is equipped with liquid storage
Chamber；The position above the top end opening corresponding to liquid storage cylinder, the magnetism is arranged in the measuring pipet in the magnetic one-way valve
Check valve includes one-way fluid channel, ball valve and floating ball pallet, and the floating ball pallet is arranged in the one-way fluid channel, institute
The center for stating floating ball pallet is equipped with arc-shaped slot up and down, and the edge of the floating ball pallet is equipped with up and down logical
Discharge orifice, the ball valve are embedded in the arc-shaped slot, and the one-way fluid channel is corresponded on the lateral wall of the measuring pipet
Position be equipped with the magnet ring that can be moved up and down along the length direction of measuring pipet, ball valve is using hollow ball made of magnetic material
Body, the magnet ring are matched with the ball valve.
In order to further realize the present invention, the one-way fluid channel by interconnected tapered channel, Vertical Channel and
Limit channels three parts form, and the ball valve is arranged by the floating ball pallet in the Vertical Channel, the taper
The internal diameter in channel gradually increases from measuring pipet top to the direction of measuring pipet bottom end, and the diameter of the ball valve is more than tapered channel most
The diameter at small-bore place.
In order to further realize the present invention, the tapered channel is by corrosion-resistant, anti-aging rubber material or silica gel material
Material is made.
In order to further realize the present invention, the outer surface of the ball valve is coated with rubber membrane or pellosil.
In order to further realize the present invention, tapered suction inlet is designed in the bottom end imbibition port of the measuring pipet.
In order to further realize the present invention, the middle position of the measuring pipet length direction is equipped with liquid storage cylinder.
The beneficial effects of the utility model：
1, the novel drawing-in type liquid-transfering device of the utility model, be equipped with include injection tube, piston, push-pull rod, pull rod handle,
Movable push bar, pressing handle, the injection mechanism for resetting helical spring and silica gel plug component, are pushed away downwards by pull rod handle
Pull rod so that piston moves down along the circular cylinder chamber inner sidewall of injection tube and drain the sky of the circular cylinder intracavitary of injection tube
Gas, then push-pull rod is pushed and pulled by pull rod handle upwards so that piston moves up simultaneously along the circular cylinder chamber inner sidewall of injection tube
In the formation suction of the circular cylinder intracavitary of injection tube, under the suction function of the circular cylinder intracavitary of injection tube, wait moving
The extractant taken enters the taper suction inlet of measuring pipet, and extractant to be pipetted will be constantly inhaled into the liquid storage cylinder of measuring pipet,
When the extractant excess in measuring pipet, it need to only slow transit through pressing handle compression and reset helical spring and push movable push bar edge
The hollow cavity for push-pull rod moves downward, and the silica gel that movable push bar pushes downwards its bottom end open during moving down is stifled
Head opens the hollow cavity bottom end opening of push-pull rod so that the top end opening of measuring pipet pass sequentially through crossover sub, injection tube,
The hollow cavity of push-pull rod is connected to ambient atmosphere, from extractant extra in measuring pipet slowly can be discharged, waits for measuring pipet
Liquid level reach measure needed for solvent graduation mark when, unclamp pressing handle, under the action of the reset helical spring of compression, to
Upper jack-up movable push bar, the silica gel plug of movable push bar bottom end tightly block the bottom end opening of the hollow cavity of push-pull rod, with
Avoid the extractant liquid drawn in measuring pipet since gravity declines the accuracy for generating leakage and influencing liquid relief, to reach
To liquid relief fast and accurately effect.When the extractant of measuring pipet will be flow to end, pull rod handle repeatedly can be quickly pressed repeatedly
To blow absorption or remaining extractant drop on measuring pipet inner wall using the positive pressure gas flow formed in injection tube, reach liquid relief
Fast and accurately effect.The utility model compared with the existing technology, index finger need not be used during using pipette liquid relief
Block the nozzle of pipette, and can be needed for accurate measuring experiment extractant so that remaining extraction on liquid relief tube wall
Agent drop quickly blows off pipette, overcomes in traditional technology " because index finger operation is immature or causes liquid relief to lose using fatigue
Lose, to need to make repeated attempts, operation and control difficulty is big, causes liquid relief inaccurate " defect.
2, the novel drawing-in type liquid-transfering device of the utility model, corresponding to the upper of the top end opening of liquid storage cylinder in measuring pipet
Orientation installs the check valve that is magnetic, and being equipped with corresponding to the position of tapered channel on the lateral wall of measuring pipet can be along the length of measuring pipet
The magnet ring that degree direction moves up and down, has magnetic ball valve and is coordinated by magnetic with magnet ring so that the liquid storage cylinder of measuring pipet exists
After the enough extractants of negative pressure absorbing, the taper that ball valve can firmly be adsorbed on one-way fluid channel under the action of buoyancy is logical
The position of road liquid outlet realizes the top end opening for unidirectionally opening its liquid storage cylinder of measuring pipet with the cooperation by ball valve and magnet ring,
To effectively prevent the during of drawing extractant fluid into measuring pipet in injection mechanism that liquid is caused to be ejected in injection tube.
3, the novel drawing-in type liquid-transfering device of the utility model, tapered channel by corrosion-resistant, anti-aging rubber material or
Person's silica gel material is made, and the magnetic hollow ball of tool is made using magnetic material in ball valve, and hollow ball is also magnetic using having
Lightweight metal material be made, the outer surface of ball valve cladding a thin layer rubber membrane or pellosil, on the one hand so that ball valve has
Corrosion resistance, on the other hand so that the flexible flexible film on ball valve surface layer fits closely and reaches more with tapered channel
The sealing blocking effect added.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Specific implementation mode
The utility model is further elaborated below in conjunction with the accompanying drawings, wherein the direction of the utility model is mark with Fig. 1
It is accurate.
As shown in Figure 1, the novel drawing-in type liquid-transfering device of the utility model, it includes injection mechanism 1, measuring pipet 2, magnetism
Check valve 3 and magnet ring 4, wherein：
Injection mechanism 1 includes injection tube 11, piston 12, push-pull rod 13, pull rod handle 14, movable push bar 15, pressing handle
16, helical spring 17 and silica gel plug 18 are resetted, injection tube 11 is in longitudinally disposed, and piston 12 is slidably installed in the circular cylinder of injection tube 11
The bottom end of intracavitary, push-pull rod 13 is fixedly connected on the upper surface of piston 12 (one side for the measuring pipet 2 that piston 12 deviates from), with
Piston 12 is pushed and pulled by push-pull rod 13 and makees movement up and down reciprocatingly in the circular cylinder intracavitary of injection tube 11, and push-pull rod 13 is far from piston
12 one end is equipped with convenient for the pull rod handle 14 of push-and-pull push-pull rod 13, and injection tube 11 deviates from one end outer periphery of 2 tube body of measuring pipet
It is equipped with convenient for the auxiliary bulge loop 19 of push-and-pull push-pull rod 13, the lateral wall of injection tube 11 is equipped with graduation mark.The bottom of injection tube 11
End is equipped with the injection interface being connected with injection tube 11, injects and is arranged on interface for sealing company with 2 top end opening of measuring pipet
The adapter coupling connect, adapter coupling are made of rubber material or silica gel material.Push-pull rod 13 is internally provided with along push-pull rod
The hollow cavity 131 that 13 length directions extend, movable push bar 15 are plugged in the hollow cavity 131 of push-pull rod 13, movable push bar
15 bottom end is fixedly connected with silica gel plug 18, and the bottom end opening of the hollow cavity 131 of push-pull rod 13 is corresponded on piston 12
Position, which is equipped with, allows 18 freely through through-hole 121 of silica gel plug, the bottom of silica gel plug 18 and the hollow cavity 131 of push-pull rod 13
End opening sealing cooperation, the top of movable push bar 15 are fixedly connected with pressing handle 16, the hollow cavity 131 of push-pull rod 13 it is interior
Side wall be equipped with limit baffle ring 132, reset helical spring 17 be set on movable push bar 15, and reset helical spring 17 be located at press
It presses between handle 16 and limit baffle ring 132, the top for resetting helical spring 17 contradicts on the lower surface of pressing handle 16, resets
The bottom end of helical spring 17 contradicts on the upper surface of limit baffle ring 132, and uncompressed state is in resetting helical spring 17
When the first operating position, resets helical spring 17 and withstand the pressing handle 1 on movable push bar 15, so that 15 bottom end of movable push bar
Silica gel plug 18 tightly block push-pull rod 13 hollow cavity 131 bottom end opening.Helical spring 17 is resetted in order to prevent
Movable push bar 15 is ejected to the hollow cavity 131 of push-pull rod 13, the lower section that limit baffle ring 132 is corresponded on movable push bar 15 is also set
There is screens bulge loop 151, so that when reset helical spring 17 jacks up movable push bar 15 upwards, due to limit baffle ring 132 and card
The cooperation of position bulge loop 151, by the limit of movable push bar 15 in the hollow cavity 131 of push-pull rod 13.
Measuring pipet 2 is the glass pipet that capacity is 5~50ml, and the top port of measuring pipet 2 passes through adapter coupling and note
The injection sealing joint of shooting cylinder 11 connects, and 2 lateral wall of measuring pipet is equipped with to measure the scale of extract liquor, the bottom of measuring pipet 2
Imbibition port is held to design tapered suction inlet 22, the middle position of 2 length direction of measuring pipet is equipped with liquid storage cylinder 21.
Magnetic one-way valve 3 is for preventing from causing liquid during drawing extractant fluid into measuring pipet 2 in injection mechanism 1
It is ejected in injection tube 11, the position above the top end opening corresponding to liquid storage cylinder 21 is arranged in measuring pipet 2 in magnetic one-way valve 3
It sets, magnetic one-way valve 3 includes one-way fluid channel 31, ball valve 32 and floating ball pallet 33, and floating ball pallet 33 is arranged in one-way fluid
In channel 31, the center of floating ball pallet 33 is equipped with arc-shaped slot up and down, and the edge of floating ball pallet 33 is equipped with up and down
The through flow hole 331 of perforation, ball valve 32 are embedded in the arc-shaped slot of floating ball pallet 33.One-way fluid channel 31 by be interconnected
Tapered channel 311, Vertical Channel 312 and 313 three parts of limit channels composition, ball valve 32 are movably arranged on one-way fluid channel 31
Tapered channel 311 and Vertical Channel 312 in so that ball valve 32 can be made up and down in tapered channel 311 and Vertical Channel 312
It moves back and forth.Tapered channel 311 and Vertical Channel 312 are extended along the axial direction of measuring pipet 2, and tapered channel 311
Internal diameter gradually increased by the direction of 2 top of measuring pipet to 2 bottom end of measuring pipet, the diameter of ball valve 32 is more than tapered channel 311 most
The diameter at small-bore place, so that the most significant end that ball valve 32 is located at tapered channel 311 can block tapered channel 311.Taper
Channel 311 is made of corrosion-resistant, anti-aging rubber material or silica gel material, and ball valve 32 is made using magnetic material with magnetic
Property hollow ball, hollow ball is also made of having magnetic lightweight metal material, and the outer surface cladding one of ball valve 32 is thin
Layer rubber membrane or pellosil, on the one hand so that ball valve 32 has corrosion resistance, on the other hand so that the tool on 32 surface layer of ball valve
Flexible flexible film fits closely with tapered channel 311 and reaches more sealing blocking effect.The lateral wall of measuring pipet 2
The upper position corresponding to tapered channel 311, which is equipped with, to be had magnetic along the magnet ring 4 that the length direction of measuring pipet 2 moves up and down
Ball valve 32 is coordinated with magnet ring 4 by magnetic so that after negative pressure absorbing extract liquor, ball valve 32 can firmly be inhaled measuring pipet 2
It is attached to the position of 311 liquid outlet of tapered channel in one-way fluid channel 31, to pass through the cooperation realization amount liquid of ball valve 32 and magnet ring 4
The top end opening for unidirectionally opening its liquid storage cylinder 51 of pipe 2, to which effect prevents from drawing extractant into measuring pipet 2 in injection mechanism 1
Liquid is caused to be ejected in injection tube 11 during liquid.
The utility model can accurate quantification pipette extractant novel extrusion type liquid-transfering device basic functional principle：It is first
First, push-pull rod 13 is pushed and pulled downwards by pull rod handle 14 so that piston 12 is downward along the circular cylinder chamber inner sidewall of injection tube 11
Move and drain the air of the circular cylinder intracavitary of injection tube 11；Secondly, the taper suction inlet 22 of measuring pipet 2 is inserted into extraction to be pipetted
Take the liquid level of agent or less；Again, pass through pull rod handle 14 upwards push-and-pull push-pull rod 13 so that piston 12 along injection tube 11 circle
Shape barrel chamber madial wall moves up and the formation suction of circular cylinder intracavitary in injection tube 11, in the circle of injection tube 11
Under suction function in shape barrel chamber, extractant to be pipetted enters the taper suction inlet 22 of measuring pipet 2, and extractant to be pipetted will
It is constantly inhaled into the liquid storage cylinder 21 of measuring pipet 2, when being full of extractant in the liquid storage cylinder 21 of measuring pipet 2, in liquid storage cylinder 21
Extractant will pass sequentially through the top end opening of liquid storage cylinder 21, the through flow hole 331 on floating ball pallet 33 enters one-way fluid channel
In 31, it is arranged and is moved upwards under the action of the ball valve 32 on floating ball pallet 33 is in buoyancy, and in the magnetic attraction masterpiece of magnet ring 4
Tapered channel 311 is blocked with the lower most significant end for enabling ball valve 32 to be located at tapered channel 311, to effectively prevent injecting
Mechanism 1 causes liquid to be ejected in injection tube 11 during drawing extractant fluid into measuring pipet 2, quick to reach liquid relief
Accurate effect.When the extractant excess in measuring pipet 2, the magnet ring 4 on the lateral wall of measuring pipet 2 need to be only removed so that cone
The 32 equal sky of float valve in shape channel 311 stays a tiny gap circulated for extractant, then slow transits through pressing handle 16 and compress
It resets helical spring 17 and movable push bar 15 is pushed to be moved downward along the hollow cavity 131 of push-pull rod 13, movable push bar 15 exists
It pushes the silica gel plug 18 of its bottom end during moving down open downwards, opens 131 bottom end opening of hollow cavity of push-pull rod 13,
So that the top end opening of measuring pipet 2 passes sequentially through hollow cavity 131 and the external world of crossover sub 10, injection tube 11, push-pull rod 13
It is molten needed for measurement to wait for that the liquid level of measuring pipet 2 reaches from extractant extra in measuring pipet 2 slowly can be discharged for atmosphere
When the graduation mark of agent, unclamps pressing handle 16 and jack up movable push bar upwards under the action of the reset helical spring 17 of compression
15, the silica gel plug 18 of 15 bottom end of movable push bar tightly blocks the bottom end opening of the hollow cavity 131 of push-pull rod 13, to avoid
The extractant liquid drawn in measuring pipet 2 is since gravity declines the accuracy for generating leakage and influencing liquid relief, to reach
Liquid relief fast and accurately effect.When the extractant of measuring pipet 2 will be flow to end, pull rod handle 14 repeatedly can be quickly pressed repeatedly
To blow absorption or remaining extractant drop on 2 inner wall of measuring pipet using the positive pressure gas flow formed in injection tube 11, reach
Liquid relief fast and accurately effect.
The foregoing is merely the better embodiments of the present invention, and the invention is not limited in the above embodiments, are implementing
There may be the small structural modifications in part in the process, if the various changes or modifications of the present invention are not departed from the essence of the present invention
God and range, and belong within the scope of the claim and equivalent technologies of the present invention, then the present invention is also intended to comprising these changes
And modification.
Claims (6)
1. a kind of novel drawing-in type liquid-transfering device, it is characterised in that：It includes injection mechanism, measuring pipet, magnetic one-way valve and magnetic
Ring, the injection mechanism include injection tube, piston, push-pull rod, pull rod handle, movable push bar, pressing handle, reset helical spring
With silica gel plug, the piston is slidably installed in the circular cylinder intracavitary of the injection tube, and the bottom end of the push-pull rod is fixedly connected on institute
It states on the upper surface of piston, the one end of the push-pull rod far from piston is equipped with pull rod handle, and the bottom end of the injection tube is equipped with note
Interface is penetrated, the adapter coupling for being tightly connected with the measuring pipet top end opening is arranged on the injection interface, it is described to push away
Pull rod is internally provided with the hollow cavity extended along push-pull rod length direction, and the movable push bar is plugged in the hollow cavity
Interior, the bottom end of the movable push bar is fixedly connected with silica gel plug, and the bottom end that the hollow cavity is corresponded on the piston is opened
The position of mouth, which is equipped with, allows the freely through through-hole of silica gel plug, the bottom end opening of the silica gel plug and the hollow cavity close
The top of envelope cooperation, the movable push bar is fixedly connected with pressing handle, and the madial wall of the hollow cavity is equipped with limiting block
Ring, the reset helical spring are set on movable push bar, and the reset helical spring be located at the pressing handle with it is described
Between limit baffle ring, screens bulge loop is equipped with corresponding to the lower position of the limit baffle ring on the movable push bar；The amount liquid
The top port of pipe is connect by the adapter coupling with the injection sealing joint of the injection tube, and the measuring pipet is equipped with liquid storage
Chamber；The position above the top end opening corresponding to liquid storage cylinder, the magnetism is arranged in the measuring pipet in the magnetic one-way valve
Check valve includes one-way fluid channel, ball valve and floating ball pallet, and the floating ball pallet is arranged in the one-way fluid channel, institute
The center for stating floating ball pallet is equipped with arc-shaped slot up and down, and the edge of the floating ball pallet is equipped with up and down logical
Discharge orifice, the ball valve are embedded in the arc-shaped slot, and the one-way fluid channel is corresponded on the lateral wall of the measuring pipet
Position be equipped with the magnet ring that can be moved up and down along the length direction of measuring pipet, ball valve is using hollow ball made of magnetic material
Body, the magnet ring are matched with the ball valve.
2. novel drawing-in type liquid-transfering device according to claim 1, it is characterised in that：The one-way fluid channel is by mutual
Tapered channel, Vertical Channel and the limit channels three parts composition of connection, the ball valve is by floating ball pallet setting in institute
It states in Vertical Channel, the internal diameter of the tapered channel gradually increases from measuring pipet top to the direction of measuring pipet bottom end, the ball
The diameter of valve is more than the diameter at tapered channel lowest calibre.
3. novel drawing-in type liquid-transfering device according to claim 2, it is characterised in that：The tapered channel by it is corrosion-resistant,
Anti-aging rubber material or silica gel material is made.
4. novel drawing-in type liquid-transfering device according to claim 1, it is characterised in that：The outer surface of the ball valve is coated with
Rubber membrane or pellosil.
5. novel drawing-in type liquid-transfering device according to claim 1, it is characterised in that：The bottom end imbibition end of the measuring pipet
Mouth designs tapered suction inlet.
6. novel drawing-in type liquid-transfering device according to claim 1, it is characterised in that：The residence of the measuring pipet length direction
Middle position is equipped with liquid storage cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721925121.2U CN207823052U (en) | 2017-12-28 | 2017-12-28 | Novel drawing-in type liquid-transfering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721925121.2U CN207823052U (en) | 2017-12-28 | 2017-12-28 | Novel drawing-in type liquid-transfering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207823052U true CN207823052U (en) | 2018-09-07 |
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ID=63391284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721925121.2U Active CN207823052U (en) | 2017-12-28 | 2017-12-28 | Novel drawing-in type liquid-transfering device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113083390A (en) * | 2021-03-24 | 2021-07-09 | Oppo广东移动通信有限公司 | Suction tube |
| CN114010493A (en) * | 2021-11-16 | 2022-02-08 | 王晨晨 | Pediatric nasal cavity cleaning device for infants |
-
2017
- 2017-12-28 CN CN201721925121.2U patent/CN207823052U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113083390A (en) * | 2021-03-24 | 2021-07-09 | Oppo广东移动通信有限公司 | Suction tube |
| CN114010493A (en) * | 2021-11-16 | 2022-02-08 | 王晨晨 | Pediatric nasal cavity cleaning device for infants |
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