CN107876115A - Anticollision liquid-transfering needle - Google Patents
Anticollision liquid-transfering needle Download PDFInfo
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- CN107876115A CN107876115A CN201610875036.3A CN201610875036A CN107876115A CN 107876115 A CN107876115 A CN 107876115A CN 201610875036 A CN201610875036 A CN 201610875036A CN 107876115 A CN107876115 A CN 107876115A
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- needle tubing
- hole
- needle
- liquid
- transfering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/0275—Interchangeable or disposable dispensing tips
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- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The present invention relates to a kind of anticollision liquid-transfering needle, including fixed sleeving, microswitch, needle tubing seat and needle tubing；The fixed sleeving is provided with first through hole vertically；The microswitch is provided with the sensing button of protrusion；The needle tubing seat is column structure, and needle tubing seat side wall, which is provided with, resets groove, and is provided with the second through hole for being used for wearing needle tubing vertically；The microswitch is fixed in the fixed sleeving side wall, and the sensing button protrudes to first through hole；The needle tubing seat is movable to be fastened in the first through hole, and the reset groove is used to house sensing button, and the groove that resets includes contradicting the shake-up face of the sensing button when moving to microswitch direction.The anticollision liquid-transfering needle of the present invention can stop further movement in time, so as to improve crashworthiness, avoid the damage of liquid-transfering needle when being obstructed；Also reduce needle tubing disassembly and installation difficulty simultaneously.
Description
Technical field
The present invention relates to reagent delivery field, more specifically to a kind of anticollision liquid-transfering needle.
Background technology
In the bioactive substance extraction element of the research fields such as disease control, food security, biology, it usually needs using shifting
Liquid pin realizes the quick transmission of optional position reagent.And in order to avoid mechanical arm is mobile inaccurate in the process of running, and lead
Cause liquid-transfering needle to be collided with reagent storage container, and then damage instrument, in the prior art generally use spring connection liquid-transfering needle
And mechanical arm buffers the collision between liquid-transfering needle and reagent storage container.But this technical scheme collision occur after, machine
The movement of tool arm will not stop, and after the motion excursion of mechanical arm exceedes to a certain degree, the damage of instrument is inevitable, anticollision
Performance is bad.
Therefore, it is necessary to which a kind of new anticollision liquid-transfering needle, realizes the real-time detection to liquid-transfering needle collision, crashworthiness is improved.
The content of the invention
It is an object of the invention to provide a kind of anticollision liquid-transfering needle, it is intended to which liquid-transfering needle collision can not be real in the prior art for solution
When detect, the problem of crashworthiness is bad.
A kind of anticollision liquid-transfering needle, including fixed sleeving, microswitch, needle tubing seat and needle tubing；The fixed sleeving is vertically
Provided with first through hole；The microswitch is provided with the sensing button of protrusion；The needle tubing seat is column structure, in needle tubing seat side wall
Provided with reset groove, and the second through hole for being used for wearing needle tubing is provided with vertically；The microswitch is fixed on the fixed cover
In the side wall of pipe, the sensing button protrudes to first through hole；The needle tubing seat is movable to be fastened in the first through hole, institute
State and reset groove for housing sensing button, and the reset groove includes contradicting the sensing when moving to microswitch direction
The shake-up face of button.
Preferably, the anticollision liquid-transfering needle also includes turn and pin tube base fixing parts；The turn is parallel vertically
It is sheathed between needle tubing seat and fixed sleeving, the turn both ends contact on the needle tubing seat and fixed sleeving respectively；Institute
Pin tube base fixing parts are stated to be used to the needle tubing seat activity being fastened in the first through hole of the fixed sleeving.
Preferably, the needle tubing seat bottom is provided with the flange extended radially outward, and the flange contradicts turn bottom,
The fixed sleeving inwall is provided with the collision piece for contradicting the turn top.
Preferably, the groove that resets is the annular groove around the needle tubing seat side wall.
Preferably, the fixed sleeving also includes installation portion, and the installation portion includes an axially disposed planar side
Wall and two it is tangent with the fixed sleeving side wall and perpendicular to the connection wall of the flat sidewall.
Preferably, a connection wall of the installation portion is provided with the accepting groove run through, the bearing of trend of the accepting groove
On the axis of the fixed sleeving, and the parallel flat sidewall, the accepting groove are used to house the microswitch.
Preferably, the first cylinder shape groove that the needle tubing seat bottom is provided with and the second through hole penetrates；The liquid-transfering needle is also
Including needle tubing gland and needle tubing lock sleeve；The needle tubing gland is wrapped to be provided with the column structure of third through-hole vertically
Include the first tapered distal end；The needle tubing lock sleeve is provided with and described first to be provided with the column structure of fourth hole vertically
First conical socket of the insertion fourth hole that tapered distal end is engaged；The needle tubing sequentially passes through the fourth hole, the 3rd
Through hole, until top insert the second through hole in；The needle tubing gland is in first cylinder shape groove and described first
Opening of the tapered distal end towards the first cylinder shape groove；The needle tubing lock sleeve side wall is connected with the first cylinder shape groove side wall,
And first conical socket houses first tapered distal end.
Preferably, it is provided with the second cylinder shape groove at the top of the needle tubing seat；The anticollision liquid-transfering needle is also fixed including flexible pipe
Head, flexible pipe lock sleeve and liquid relief flexible pipe；The flexible pipe gland is is provided with the column structure of fifth hole vertically, and including the
Two tapered distal ends；The flexible pipe lock sleeve is provided with and second taper to be provided with the column structure of the 6th through hole vertically
The second conical socket that end is engaged；The liquid relief flexible pipe is arranged in the needle tubing, and sequentially pass through the first through hole,
Fifth hole and the 6th through hole；The flexible pipe gland is in second cylinder shape groove, and second tapered distal end
Towards the opening of the second cylinder shape groove；The flexible pipe lock sleeve side wall is connected with needle tubing seat the second cylinder shape groove side wall, and
Second conical socket houses second tapered distal end.
Preferably, the needle tubing gland is prepared using elastomeric material.
Preferably, first tapered distal end is provided with strip fluting vertically.
The present invention senses the reset groove of button by being provided with needle tubing seat upper side wall for accommodating on microswitch,
Resetting groove includes that the shake-up face to microswitch directional pressure can be applied to sensing button, when liquid-transfering needle is in sampling process
When being obstructed, moving up and down for needle tubing seat can make the shake-up face of reset groove sense button, and jogging switches measurement stops in time to exception
The only further movement of liquid-transfering needle, so as to improve crashworthiness, avoid the damage of liquid-transfering needle.
The anticollision liquid-transfering needle of the present invention, its needle tubing is demountable structure, when being shifted to different reagents, it is only necessary to more
Needle exchange pipe can avoid the cross pollution between reagent, without being changed to whole liquid-transfering needle, reduce the dismounting of liquid-transfering needle
And installation difficulty.
Brief description of the drawings
Fig. 1 is the profile of liquid-transfering needle in first embodiment of the invention.
Fig. 2 is profile when liquid-transfering needle is obstructed in first embodiment of the invention.
Fig. 3 is the structural representation of fixed sleeving in second embodiment of the invention.
Fig. 4 is the structural representation of microswitch in second embodiment of the invention.
Fig. 5 is the structural representation that the second microswitch of the invention is fixed on fixed sleeving.
Fig. 6 is the fragmentary cross-sectional view of liquid-transfering needle in third embodiment of the invention.
Fig. 7 is the fragmentary cross-sectional view of needle tubing seat in third embodiment of the invention.
Fig. 8 is the fragmentary cross-sectional view of needle tubing gland and needle tubing lock sleeve in third embodiment of the invention.
Fig. 9 is the structural representation of needle tubing gland in third embodiment of the invention.
Figure 10 is the fragmentary cross-sectional view of liquid-transfering needle in fourth embodiment of the invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.
The present invention proposes first embodiment, there is provided a kind of anticollision liquid-transfering needle, as shown in figure 1, the anticollision liquid-transfering needle 100 wraps
Include fixed sleeving 110, microswitch 120, needle tubing seat 130 and needle tubing 140；It is logical that the fixed sleeving 110 is provided with first vertically
Hole；The microswitch 120 is provided with the sensing button 121 of protrusion；The needle tubing seat 130 is column structure, in side wall
Provided with reset groove 131, and the second through hole for being used for wearing needle tubing 140 is provided with vertically；The microswitch 120 is fixed on institute
State in the side wall of fixed sleeving 110, the sensing button 121 protrudes to first through hole；The needle tubing seat 130 is movable to be fastened on institute
State in first through hole, the reset groove 131 is used to house the sensing button 121, and the reset groove 131 is included to micro-
The shake-up face 1311 of the sensing button 121 is contradicted during dynamic switch direction movement.
In the present embodiment, the anticollision liquid-transfering needle also includes turn 150 and pin tube base fixing parts 160；The turn
150 vertically parallel sleeve be located between fixed sleeving 110 and needle tubing seat 130, both ends contradict in fixed sleeving 110 and needle tubing respectively
On seat 130, the pin tube base fixing parts 160 are used to the activity of needle tubing seat 130 being fastened in the fixed sleeving 110.
In the present embodiment, the bottom of needle tubing seat 130 is provided with the flange 132 extended radially outward, for contradicting spring
The bottom of circle 140, the inwall of fixed sleeving 110 are provided with the collision piece for being used for contradicting the top of turn 150.The collision piece
Can be the projection set on fixed sleeving inwall or the ledge structure 111 formed on fixed sleeving inwall.This
In embodiment, the internal diameter on the top of fixed sleeving 110 is less than lower inner diameter, is used so as to be formed on the inwall of fixed sleeving 110
In the ledge structure 111 for contradicting the top of turn 150.
In the present embodiment, first turn 150 is inserted in from the top of needle tubing seat 130, because the outer rim of flange 132 is more than bullet
The diameter of spring coil 150, the one end of turn 150 are resisted against on the flange 132 of the bottom of needle tubing seat 130, then by fixed sleeving 110 from
The top of needle tubing seat 130 is inserted in, and ledge structure 111 abuts against the other end of turn 150, finally consolidates pin tube base fixing parts 160
The top of needle tubing seat 130 is scheduled on, the edge of pin tube base fixing parts 160 abuts against the top edge of fixed sleeving 110, completes assembling.
The bottom of the needle tubing seat 130 is concordant with the bottom of fixed sleeving 110 after assembling, and the top of the needle tubing seat 130 is higher than described
The top of fixed sleeving 110；The pin tube base fixing parts 160 are and the top of needle tubing seat 130 located at the top of fixed sleeving 110
The hollow cylinder structure of socket, its external diameter are more than the internal diameter at the top of fixed sleeving 110, therefore the pin tube base fixing parts 160
The activity of needle tubing seat 130 can be fastened on fixed sleeving 110.In alternate embodiment, the needle tubing seat 130 and needle tubing seat
It can be connected, can also be spun by screw thread by Elastic buckle between fixture 160.In the present embodiment, the needle tubing seat is consolidated
Determine the inwall of part 160 and be provided with internal thread, the top of needle tubing seat 130 is provided with and interior spiral shell on the inwall of pin tube base fixing parts 160
The external screw thread that line is engaged.
In the present embodiment, the structure for resetting groove 131 can have diversified forms, can be located at the list of needle tubing seat 130
In the side wall of side, it can also be located at around the peripheral ring of needle tubing seat 130 in the side wall of needle tubing seat 130.In preferred embodiment, the reset is recessed
Groove 131 is the annular groove around needle tubing seat 130, and compared with the reset groove set on single-sided side walls, this programme causes pin
Pipe sleeve can rotate in fixed sleeving, add flexibility.
The structure of the sensing button 121 can be hemispherical dome structure, pyramidal structure or column construction.In the present embodiment,
Sensing button 121 is hemispherical dome structure, and it is not easy clashing and breaking with touching in the contact process of face.
In the present embodiment, the shake-up face 1311 is with needle tubing seat side wall into obtuse angle, and the shake-up face 1311 of this programme is with sensing
When button 121 contacts, the pressure to microswitch direction can be applied to sensing button.
Anticollision liquid-transfering needle is fixed to the moveable mechanical arm of liquid-transfering device（It is not shown）After upper, when liquid-transfering needle is in sampling process
In when being obstructed, as shown in Fig. 2 needle tubing 140 drives needle tubing seat 130 to move upwards, needle tubing seat flange 132 drives turn 150 same
When upwards motion until the top of turn 150 contradict on the ledge structure 111 of fixed sleeving 110；Reset the shake-up of groove 131
The touch inducing button 121 of face 1311, microswitch 120 detect exception, are notified in time in control by the circuit of connection jaws 122
The heart stops manipulator motion, prevents that liquid-transfering needle is moved further up damaging.Turn 150 is supported by ledge structure 111
Touch, produce downward elastic force so that needle tubing seat 130 resets.
The present invention proposes second embodiment, a kind of anticollision liquid-transfering needle, as shown in figure 3, the present embodiment is in first embodiment
On the basis of, the fixed sleeving 210 also includes an installation portion, and the installation portion includes an axially disposed flat sidewall
212 and two it is tangent with the fixed sleeving side wall and perpendicular to the connection wall 213 of the flat sidewall 212, liquid-transfering needle leads to
The screw crossed in flat sidewall 212 is fixed on the moveable mechanical arm of liquid-transfering device（It is not shown）.
In the present embodiment, as shown in Figs. 3-4, a connection wall 213 of the fixed sleeving 210 is provided with the receipts run through
Tank 214, the bearing of trend of the accepting groove 214 is located on the axis of the fixed sleeving 210, and the parallel fixed sleeving
210 flat sidewalls 212, the accepting groove 214 are used to house microswitch 220.The microswitch 220 is provided with the first screw
223, the connection wall 213 provided with accepting groove 214 is provided with boss 215, institute between accepting groove 214 and flat sidewall 212
State boss 215 and be provided with the second screw 217 being engaged with the first screw 223.In the present embodiment, described 215 two phases of boss
To side it is concordant with the lateral surface of flat sidewall 212 and the side wall of accepting groove 214 respectively, and boss 215 is put down with flat sidewall
Neat side is provided with fixing groove 216, and the second screw is in fixing groove 216.
As shown in figure 5, in the present embodiment, the microswitch 220 is first housed in the accepting groove 214 of fixed sleeving 210
It is interior, the second screw 217 and the first screw 223 are sequentially passed through with screw 218, microswitch 220 is fixed on fixed sleeving 210
On.The present embodiment sets boss 215 to be advantageous to the fixation of microswitch 220, sets fixing groove 216 to avoid wearing on boss
The screw 218 crossed protrudes flat sidewall 212 and influences the fixation of liquid-transfering needle on the robotic arm.
In preferred embodiment, as shown in figure 3, the fixed sleeving 210 includes first sleeve 2101, is located at first set respectively
Second sleeve pipe 2102 at the both ends of pipe 2101 and the 3rd sleeve pipe 2103, the external diameter of first sleeve 2101 are more than the second sleeve pipe 2102 and the
The external diameter of three sleeve pipes 2103, in the side wall of the first sleeve 2101, this programme is advantageous in installation portion for the installation position
It is upper that enough space setting accepting grooves are provided.
In the present embodiment, because the first sleeve pipe thickness of the thickness ratio fixed sleeving of installation portion is big, spiral shell can be prevented
The tube wall that nail 218 exerted oneself havoc fixed sleeving, can provide the installation site of liquid-transfering needle again, simple in construction.
After microswitch 220 is arranged in accepting groove 214, the sensing button is accommodated in the reset groove 214.
The connection jaws 222 of the sensing button are exposed to the adjacent connection wall 213 of the fixed sleeving flat sidewall 212.
The present invention proposes 3rd embodiment, and a kind of anticollision liquid-transfering needle, as shown in Fig. 6 to 8, the present embodiment is in second embodiment
On the basis of, the needle tubing seat bottom is provided with the first cylinder shape groove 334 run through with second through hole 333；The liquid relief
Pin 300 also includes needle tubing gland 370, needle tubing lock sleeve 380；The needle tubing gland 370 is to be provided with third through-hole vertically
371 column structure, and including the first tapered distal end 372；The needle tubing lock sleeve 380 is to be provided with fourth hole 381 vertically
Column structure, its upper end be provided be engaged with the first tapered distal end 372 insertion fourth hole 381 the first conical socket
382；The needle tubing 340 sequentially passes through fourth hole 381, third through-hole 371, until top is inserted in the second through hole 331；It is described
Needle tubing gland 370 is in the first cylinder shape groove 334, and the first tapered distal end 372 is towards the first cylinder shape groove 334
Opening；The side wall of needle tubing lock sleeve 380 is connected with the side wall of the first cylinder shape groove 334, and the first conical socket 382 houses the
One tapered distal end 372.
It can be spun, can also led to by screw thread between the side wall of 380 and first cylinder shape groove of needle tubing lock sleeve 334
Cross Elastic buckle clamping.In the present embodiment, the first cylinder shape groove side wall is provided with the first internal thread 335, the needle tubing
The side wall of lock sleeve 380 is provided with the first external screw thread 383 being engaged with the first internal thread 335.
When the screw thread between needle tubing lock sleeve 380 and needle tubing seat 330 spins in relaxed state, successively from fourth hole
381st, third through-hole 371, the second through hole 333 insertion needle tubing 340, then revolve needle tubing lock sleeve 380 towards the direction of needle tubing seat 330
Tightly, the first conical socket 382 promotes the first tapered distal end 372 to the top of the first cylinder shape groove 334, until needle tubing gland
370 tops contradict and house the first cylinder shape groove roof, while the first conical socket 382 is to the cone of the first tapered distal end 372
Face direction applies pressure, fastens needle tubing 340 so as to compress the diameter of third through-hole 371., will when needing to change needle tubing 340
Screw thread between needle tubing lock sleeve 380 and needle tubing seat 330, which spins, to be unscrewed, and the first conical socket 382 is to the first tapered distal end 372
The pressure that conical surface direction applies is removed, and needle tubing gland 370 relaxes to the fixed of needle tubing 340, so as to carry out dismounting and change.
For needle tubing gland, in preferred embodiment, the needle tubing gland 370 is prepared using elastomeric material, such as is moulded
Material, rubber, because elastomeric material has preferable compression performance and screen resilience, the needle tubing gland 370 is locked by needle tubing
During the pressure that tight set 380 applies, it is easy to shrink fastening needle tubing 340, the energy when pressure is removed to the diametric(al) of third through-hole 371
Enough quick resiliences, unclamp needle tubing.In better embodiment, the material of the needle tubing gland 370 is elastic caoutchouc, not only can be with
Apply in conical surface direction and needle tubing is compressed by elastic shrinkage under pressure, and can further increase needle tubing gland compared to plastics
Frictional force between 370 and metal needle tubing, further prevents syringe needle from coming off.In another preferred embodiment, first bore for convenience
Connected in star 382 increases the friction between needle tubing gland 370 and needle tubing to reduction friction is coordinated between the first tapered distal end 372
Power, the main body of needle tubing gland 370 use plastics, and the inwall of third through-hole 371 includes the cushion rubber layer of injection moulding integrated molding
373。
For needle tubing gland, in preferred embodiment, with reference to figure 9, the first tapered distal end of the needle tubing gland 370
372 are provided with the strip fluting 374 opened up vertically, and the fluting 374 can be one or multiple, this implementation
Two parallel strip flutings are provided with example.The fluting 374 can make needle tubing gland 370 by along conical surface direction
During pressure, preferably gather towards the diametric(al) of third through-hole so as to fasten needle tubing；When pressure is removed can quick resilience, pine
Open needle tubing.
Compared to integrally formed liquid-transfering device in the prior art, liquid-transfering needle needle tubing of the invention is detachable, to difference
Reagent when being shifted, it is only necessary to cross pollution between reagent can be avoided by changing needle tubing, without entering to whole liquid-transfering needle
Row is changed, and reduces the disassembly and installation difficulty of liquid-transfering needle.
Fourth embodiment of the invention, a kind of anticollision liquid-transfering needle is proposed, as shown in Figure 10, any of the above-described embodiment of the present embodiment
On the basis of, the top of needle tubing seat 430 is additionally provided with the second cylinder shape groove 436 with the insertion of the second through hole；The liquid-transfering needle
Also include flexible pipe gland 470, flexible pipe lock sleeve 480 and liquid relief flexible pipe 490；The flexible pipe gland 470 is to be provided with vertically
The column structure of fifth hole, and including the second tapered distal end；The flexible pipe lock sleeve 480 is vertically provided with the 6th through hole
Column structure, and provided with the second conical socket of the through hole of insertion the 6th being engaged with the second tapered distal end.The liquid relief flexible pipe
490 are arranged in needle tubing, and its sequentially pass through the second through hole of the needle tubing seat 430, flexible pipe gland 470 fourth hole and
The fifth hole of flexible pipe lock sleeve 480；The flexible pipe gland 470 is in second cylinder shape groove 436, and described the
Opening of two tapered distal ends towards the second cylinder shape groove 436；The side wall of flexible pipe lock sleeve 480 and the second cylinder shape groove 436
Side wall connection, and the second conical socket house the second tapered distal end.The cylinder shape groove of flexible pipe lock sleeve 480 and second
Connected mode between 436 side walls can be spun by Elastic buckle clamping or by screw thread.In the present embodiment,
The side wall of second cylinder shape groove 436 is provided with the second internal thread, and the lateral wall of flexible pipe lock sleeve 480 is provided with and second
The second external screw thread that internal thread is engaged.
When the screw thread between flexible pipe lock sleeve 480 and needle tubing seat 430 spins in relaxed state, by flexible pipe lock sleeve
480 screw towards the direction of needle tubing seat 430, and the second conical socket promotes the second tapered distal end to the second cylinder shape groove top, until
The soft top of gland 470 contradicts the roof of the second cylinder shape groove 436, while the second conical socket is to the conical surface of the second tapered distal end
Apply pressure, fasten liquid relief flexible pipe 490.When needing to change liquid relief flexible pipe 490, by flexible pipe lock sleeve 480 and needle tubing seat 430
Between screw thread spin and unscrew, the pressure that the second conical socket applies to the conical surface of the second tapered distal end is removed, and flexible pipe is fixed
The fixed relaxation of first 470 pairs of liquid relief flexible pipes 490, so as to carry out dismounting and change.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (10)
1. a kind of anticollision liquid-transfering needle, it is characterised in that including fixed sleeving, microswitch, needle tubing seat and needle tubing；The fixed cover
Pipe is provided with first through hole vertically；The microswitch is provided with the sensing button of protrusion；The needle tubing seat is column structure, needle tubing
Seat side wall, which is provided with, resets groove, and is provided with the second through hole for being used for wearing needle tubing vertically；The microswitch is fixed on institute
State in the side wall of fixed sleeving, the sensing button protrudes to first through hole；The needle tubing seat is movable to be fastened on described first
In through hole, the reset groove is used to house sensing button, and the reset groove includes supporting when moving to microswitch direction
Touch the shake-up face of the sensing button.
2. anticollision liquid-transfering needle according to claim 1, it is characterised in that the anticollision liquid-transfering needle also includes turn and pin
Tube base fixing parts；Parallel sleeve is located between needle tubing seat and fixed sleeving the turn vertically, the turn both ends difference
Contact on the needle tubing seat and fixed sleeving；The pin tube base fixing parts are described solid for the needle tubing seat activity to be fastened on
Determine in the first through hole of sleeve pipe.
3. anticollision liquid-transfering needle according to claim 2, it is characterised in that the needle tubing seat bottom is provided with radially towards extension
The flange stretched, the flange contradict turn bottom, and the fixed sleeving inwall, which is provided with, contradicts supporting for the turn top
Contact element.
4. anticollision liquid-transfering needle according to claim 1, it is characterised in that the reset groove is around the needle tubing seat side
The annular groove of wall.
5. anticollision liquid-transfering needle according to claim 1, it is characterised in that the fixed sleeving also includes installation portion, described
Installation portion is tangent with the fixed sleeving side wall including an axially disposed flat sidewall and two and perpendicular to described
The connection wall of flat sidewall.
6. anticollision liquid-transfering needle according to claim 5 a, it is characterised in that connection wall of the installation portion is provided with and passed through
The accepting groove worn, the bearing of trend of the accepting groove is located on the axis of the fixed sleeving, and the parallel flat sidewall, institute
Accepting groove is stated to be used to house the microswitch.
7. anticollision liquid-transfering needle according to claim 1, it is characterised in that the needle tubing seat bottom is provided with and the second through hole passes through
The first logical cylinder shape groove；The anticollision liquid-transfering needle also includes needle tubing gland and needle tubing lock sleeve；The needle tubing gland
To be provided with the column structure of third through-hole vertically, and including the first tapered distal end；The needle tubing lock sleeve is to be provided with vertically
The column structure of fourth hole, and the first taper provided with the insertion fourth hole being engaged with first tapered distal end is recessed
Groove；The needle tubing sequentially passes through the fourth hole, third through-hole, until top is inserted in the second through hole；The needle tubing is fixed
Head in first cylinder shape groove and first tapered distal end towards the first cylinder shape groove opening；The needle tubing
Lock sleeve side wall is connected with the first cylinder shape groove side wall, and first conical socket houses first tapered distal end.
8. anticollision liquid-transfering needle according to claim 1, it is characterised in that it is recessed that the second cylinder is provided with the top of the needle tubing seat
Groove；The anticollision liquid-transfering needle also includes flexible pipe gland, flexible pipe lock sleeve and liquid relief flexible pipe；The flexible pipe gland is vertically
Column structure provided with fifth hole, and including the second tapered distal end；The flexible pipe lock sleeve is to be provided with the 6th through hole vertically
Column structure, and provided with the second conical socket of the through hole of insertion the 6th being engaged with second tapered distal end；The shifting
Liquid flexible pipe is arranged in the needle tubing, and sequentially passes through the first through hole, fifth hole and the 6th through hole；The flexible pipe is fixed
Head is in second cylinder shape groove, and the opening of second tapered distal end the second cylinder shape groove of direction；It is described soft
Pipe lock sleeve side wall is connected with needle tubing seat the second cylinder shape groove side wall, and the second conical socket houses the second taper end
End.
9. anticollision liquid-transfering needle according to claim 1, it is characterised in that the needle tubing gland uses elastomeric material system
It is standby.
10. anticollision liquid-transfering needle according to claim 1, it is characterised in that first tapered distal end is provided with vertically
Strip fluting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610875036.3A CN107876115A (en) | 2016-09-30 | 2016-09-30 | Anticollision liquid-transfering needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610875036.3A CN107876115A (en) | 2016-09-30 | 2016-09-30 | Anticollision liquid-transfering needle |
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| Publication Number | Publication Date |
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| CN107876115A true CN107876115A (en) | 2018-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610875036.3A Pending CN107876115A (en) | 2016-09-30 | 2016-09-30 | Anticollision liquid-transfering needle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113164961A (en) * | 2019-02-15 | 2021-07-23 | 细胞分选仪有限公司 | Piezoelectric micropipettor |
| CN113514657A (en) * | 2021-04-22 | 2021-10-19 | 长沙海柯生物科技有限公司 | Multifunctional sample adding device for inspection equipment |
| CN114634863A (en) * | 2022-03-30 | 2022-06-17 | 上海格氏流体设备科技有限公司 | Tangential flow filter based on cell culture |
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