CN208356805U - A kind of suction pipette head - Google Patents

Abstract

The utility model discloses a kind of suction pipette heads, including suction nozzle ontology, a propulsive liquid component is equipped in the suction nozzle body, the propulsive liquid component includes sleeve, spring and pushing cylinder, the sleeve is set in the upper section of the suction nozzle body, the end of the sleeve is fixedly connected with the pushing cylinder, the outer surface of the pushing cylinder and the inner surface of the suction nozzle body lower section fit, the inner surface of the lower section, which is equipped with, prolongs its diametrical direction equipped with an annulus, the end of the pushing cylinder is equipped with the upper surface that the spring is fixedly attached to annulus, the side of the upper section of the suction nozzle body is provided with a through-hole, the side of the sleeve is equipped with a telescopic rod, the movable end of the telescopic rod passes through the through-hole, the end of the telescopic rod is equipped with a pressing plate, the telescopic rod is connected to a cleaning assembly, the suction nozzle body lower section is additionally provided with a heating component.The utility model effectively prevent suction nozzle ontology to be blocked.

Description

A kind of suction pipette head

Technical field

The utility model relates to a kind of biological or chemical instrument, specially a kind of suction pipette head.

Background technique

Pipettor is also known as liquid-transfering gun, is a kind of utensil for quantitative transfer liquid, is widely used in the neck such as biology, chemistry Domain.Pipettor using must the suction nozzle of mating a set of different size could be used for pipette liquid.Pipettor universal standard suction nozzle rule Lattice usually have: 10 μ L, 200 μ L, 1000 μ L.Wherein, the specifications parameter of 1000 μ L suction nozzles is 8mm (bottom end internal diameter) * 71mm (long Degree), front inner diameter 1mm, for drawing 200-1000 μ L liquid；The specifications parameter of 200 μ L suction nozzles is 6mm (bottom end internal diameter) * 52mm (length), front inner diameter 0.5mm, for drawing 20-200 μ L liquid.In biology, chemical experiment, viscosity is commonly used Biggish oil-based liquid, such as glycerol, sodium hyaluronate, collagen, trehalose.Sometimes also to draw the liquid containing particulate component Body, such as tissue suspension.Following problems (this can be usually encountered using 200 μ L of conventional specification, the absorption of 1000 μ L suction nozzles at this time Substantially the suction nozzle of 10 μ L specifications will not be used in the case of kind, 200 μ L suction nozzles also use less), draw the biggish oiliness liquid of viscosity Body cannot draw enough amounts, have more liquid to remain in suction nozzle after liquid is discharged；Aspirates tissue suspension is easy to block.

Utility model content

The purpose of this utility model is to provide a kind of suction pipette heads, to solve mentioned above in the background art ask Topic.

To achieve the above object, the utility model provides the following technical solutions: a kind of suction pipette head, including suction nozzle sheet Body, the suction nozzle ontology include three sections: sequentially connected upper section, middle section and lower section, described three sections are inverted truncated cone-shaped, institute The taper for stating lower section is greater than the taper in middle section, and the middle section is connected with the interior walls be smooth of lower section, is connector at the top of the upper section, The lower section bottom is suction nozzle mouth, is equipped with a propulsive liquid component in the suction nozzle ontology, the propulsive liquid component include sleeve, spring with And pushing cylinder, the sleeve are set in the upper section of the suction nozzle ontology, the end of the sleeve is fixedly connected with the pushing cylinder, described to push away The outer surface of cylinder and the inner surface of the suction nozzle ontology lower section fit, and the inner surface of the lower section, which is equipped with, prolongs its diametrical direction Equipped with an annulus, the end of the pushing cylinder is equipped with the upper surface that the spring is fixedly attached to annulus, the suction nozzle ontology it is upper The side of section is provided with a through-hole, and the side of the sleeve is equipped with a telescopic rod, and the movable end of the telescopic rod passes through the through-hole, The end of the telescopic rod is equipped with a pressing plate, and the telescopic rod is connected to a cleaning assembly, and the cleaning assembly includes cleaning pipe It is connected to the telescopic rod with the one end in cleaning hole, the cleaning pipe, the cleaning pipe extends in the pushing cylinder, described to push away The inner surface of cylinder prolongs its circumferencial direction and is provided with multiple cleaning holes, and the suction nozzle ontology lower section is additionally provided with a heating component, described to add Hot component includes fixed cylinder, and the fixing barrel casing is located at the lower section of the suction nozzle ontology, the inner cylinder face of the fixed cylinder and suction nozzle Exothermic material is filled between the outer surface of ontology.

Preferably, the length of the through-hole is longer than the length of the telescopic rod.

Preferably, the suction nozzle internal coat has an antimicrobial coating, and the surface of the wallboard and fixed beam is coated with antibacterial Coating, the antimicrobial coating include base, and moisture resistance wet layer, the first antibiotic layer, moisture resistance wet layer, second are set gradually in the base Antibiotic layer, moisture resistance wet layer, third antibiotic layer, surface layer, first antibiotic layer is natural horseradish antibiotic layer, the second antibiotic layer is day Right antibacterial peptide antibiotic layer, the third antibiotic layer are natural chitosan antibiotic layer, are evenly distributed in the moisture resistance wet layer mould proof Microballon.

Preferably, the mould proof microballon is camphor ball；The bacterium layer is that natural antibacterial peptide antibiotic layer is resisted by natural antibacterial peptide Bacterium coating even spread forms；Pearlite heat-insulation plate is additionally provided in the base.

Preferably, the base with a thickness of 1-2mm；First antibiotic layer with a thickness of 2-3mm；The moisture resistant Layer with a thickness of 1-1.5mm；Second antibiotic layer with a thickness of 3-5mm；The third antibiotic layer with a thickness of 4-5mm；Institute State surface layer with a thickness of 1-3mm.

Compared with prior art, the utility model has the beneficial effects that the utility model is provided with propulsive liquid component and cleaning Component, when the liquid that pipettor is drawn is liquid of vicidity, sleeve is set in the upper section of the suction nozzle ontology, and pushing cylinder is set in The lower section of suction nozzle ontology, the lower section of suction nozzle ontology prolong its circumferencial direction equipped with annulus, and logical pushing cylinder is resisted against on annulus by spring, When needing to clear up the liquid of suction nozzle ontology lower section, pressed down using the telescopic rod on sleeve, so that pushing cylinder can move downward, Will accumulate lower section liquid discharge, so far will not clogging suction nozzle ontology, complete propulsive liquid after, utilize cleaning pipe and cleaning Hole can wash suction nozzle body interior, and heating component set in addition can will not be glued to sticky oil-based liquid is guaranteed It stays in pushing cylinder and suction nozzle ontology.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram of the antimicrobial coating of the utility model.

In figure: 1, upper section；2, middle section；3, lower section；4, pushing cylinder；5, spring；6, annulus；7, sleeve；8, through-hole；9, it stretches Bar；10, pressing plate；11, cleaning pipe；12, hole is cleaned；13, fixed cylinder；14, exothermic material；15, base；16, moisture resistance wet layer； 17, the first antibiotic layer；18, the second antibiotic layer；19, third antibiotic layer；20, surface layer.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

A kind of embodiment provided by the utility model referring to FIG. 1-2:

A kind of suction pipette head, including suction nozzle ontology, the suction nozzle ontology include three sections: sequentially connected upper section 1, middle section 2 and lower section 3, described three sections are inverted truncated cone-shaped, and the taper of the lower section 3 is greater than the taper in middle section, the middle section 2 and under The interior walls be smooth connection of section 3, is connector at the top of the upper section 1, and 3 bottom of lower section is suction nozzle mouth, in the suction nozzle ontology Equipped with a propulsive liquid component, the propulsive liquid component includes sleeve 7, spring 5 and pushing cylinder 4, and the sleeve 7 is set in the suction nozzle sheet The upper section 1 of body, the end of the sleeve 7 are fixedly connected with the pushing cylinder 4, under the outer surface of the pushing cylinder 4 and the suction nozzle ontology The inner surface of section 3 fits, and the inner surface of the lower section 3 is equipped with an annulus 6 equipped with its diametrical direction is prolonged, the pushing cylinder 4 End is equipped with the upper surface that the spring 5 is fixedly attached to annulus 6, and the side of the upper section 1 of the suction nozzle ontology is provided with a through-hole 8, the side of the sleeve 7 is equipped with a telescopic rod 9, and the movable end of the telescopic rod 9 passes through the through-hole 8, the telescopic rod 9 End is equipped with a pressing plate 10, and the telescopic rod 9 is connected to a cleaning assembly, and the cleaning assembly includes cleaning pipe 11 and cleaning hole 12, one end of the cleaning pipe 11 is connected to the telescopic rod 9, and the cleaning pipe 11 extends in the pushing cylinder 4, described to push away The inner surface of cylinder 4 prolongs its circumferencial direction and is provided with multiple cleaning holes 12, and the suction nozzle ontology lower section 3 is additionally provided with a heating component, institute Stating heating component includes fixed cylinder 13, and the fixed cylinder 13 is set in the lower section 3 of the suction nozzle ontology, the fixed cylinder 13 it is interior Exothermic material 14 is filled between cylinder face and the outer surface of suction nozzle ontology.

In the present embodiment, the length of the through-hole 8 is longer than the length of the telescopic rod 9

In the present embodiment, the suction nozzle internal coat has an antimicrobial coating, and the antimicrobial coating includes base 15, described Moisture resistance wet layer 16, the first antibiotic layer 17, moisture resistance wet layer 16, the second antibiotic layer 18, moisture resistance wet layer 16, are set gradually in base 15 Three antibiotic layers 19, surface layer 20, first antibiotic layer 17 is natural horseradish antibiotic layer, the second antibiotic layer 18 is natural antibacterial peptide Antibiotic layer, the third antibiotic layer 19 are natural chitosan antibiotic layer, are evenly distributed with mould proof microballon in the moisture resistance wet layer 16； The mould proof microballon is camphor ball；Bacterium layer be natural antibacterial peptide antibiotic layer by natural antibacterial peptide antibiotic paint even spread and At；Pearlite heat-insulation plate is additionally provided in the base 15；The base 15 with a thickness of 1-2mm；First antibiotic layer 17 With a thickness of 2-3mm；The moisture resistance wet layer 16 with a thickness of 1-1.5mm；Second antibiotic layer 18 with a thickness of 3-5mm；It is described Third antibiotic layer 19 with a thickness of 4-5mm；The surface layer 20 with a thickness of 1-3mm.

Working principle: the utility model is provided with propulsive liquid component and cleaning assembly, when the liquid that pipettor is drawn is sticky When property liquid, sleeve 7 is set in the upper section 1 of the suction nozzle ontology, and pushing cylinder 4 is set in the lower section 3 of suction nozzle ontology, suction nozzle ontology Lower section 3 prolongs its circumferencial direction equipped with annulus 6, and logical pushing cylinder 4 is resisted against on annulus 6 by spring 5, when needing to clear up under suction nozzle ontology When the liquid of section 3, is pressed down using the telescopic rod 9 on sleeve 7, so that pushing cylinder 4 can move downward, will be accumulated in lower section 3 Liquid discharge, so far will not clogging suction nozzle ontology, complete propulsive liquid after, using cleaning pipe 11 and cleaning hole 12, can will inhale Head body interior washes, and heating component set in addition can stay in 4 He of pushing cylinder to guaranteeing that sticky oil-based liquid will not glue In suction nozzle ontology

Although the utility model is described in detail with reference to the foregoing embodiments, come for those skilled in the art Say, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic into Row equivalent replacement, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should all It is included within the scope of protection of this utility model.

Claims (5)

1. a kind of suction pipette head, including suction nozzle ontology, it is characterised in that: the suction nozzle ontology includes three sections: sequentially connected Upper section (1), middle section (2) and lower section (3), described three sections are inverted truncated cone-shaped, and the taper of the lower section (3) is greater than middle section Taper, the middle section (2) connect with the interior walls be smooth of lower section (3), are connector, lower section (3) bottom at the top of the upper section (1) Portion is suction nozzle mouth, is equipped with a propulsive liquid component in the suction nozzle ontology, the propulsive liquid component includes sleeve (7), spring (5) and pushes away Cylinder (4), the sleeve (7) are set in the upper section (1) of the suction nozzle ontology, and the end of the sleeve (7) is fixedly connected with described push away Cylinder (4), the outer surface of the pushing cylinder (4) and the inner surface of the suction nozzle ontology lower section (3) fit, the lower section (3) Inner surface, which is equipped with, prolongs its diametrical direction equipped with an annulus (6), and the end of the pushing cylinder (4) is equipped with the spring (5) and is fixedly connected It is provided with a through-hole (8) to the side of the upper surface of annulus (6), the upper section (1) of the suction nozzle ontology, the side of the sleeve (7) Equipped with a telescopic rod (9), the movable end of the telescopic rod (9) passes through the through-hole (8), and the end of the telescopic rod (9) is equipped with One pressing plate (10), the telescopic rod (9) are connected to a cleaning assembly, and the cleaning assembly includes cleaning pipe (11) and cleaning hole (12), one end of the cleaning pipe (11) is connected to the telescopic rod (9), and the cleaning pipe (11) extends to the pushing cylinder (4) in, the inner surface of the pushing cylinder (4) prolongs its circumferencial direction and is provided with multiple cleaning holes (12), and the suction nozzle ontology lower section (3) is also Equipped with a heating component, the heating component includes fixed cylinder (13), and the fixed cylinder (13) is set in the suction nozzle ontology Lower section (3) is filled with exothermic material (14) between the inner cylinder face of the fixed cylinder (13) and the outer surface of suction nozzle ontology.

2. a kind of suction pipette head according to claim 1, it is characterised in that: the length of the through-hole (8) is longer than described The length of telescopic rod (9).

3. a kind of suction pipette head according to claim 1, it is characterised in that: the suction nozzle internal coat has antibacterial painting Layer, the antimicrobial coating includes base (15), sets gradually moisture resistance wet layer (16), the first antibiotic layer on the base (15) (17), moisture resistance wet layer (16), the second antibiotic layer (18), moisture resistance wet layer (16), third antibiotic layer (19), surface layer (20), described One antibiotic layer (17) is natural horseradish antibiotic layer, the second antibiotic layer (18) is natural antibacterial peptide antibiotic layer, the third antibiotic layer (19) it is natural chitosan antibiotic layer, is evenly distributed with mould proof microballon in the moisture resistance wet layer (16).

4. a kind of suction pipette head according to claim 3, it is characterised in that: the mould proof microballon is camphor ball；It is described Bacterium layer is that natural antibacterial peptide antibiotic layer is formed by natural antibacterial peptide antibiotic paint even spread；Treasure is additionally provided on the base (15) Pearl rock insulation board.

5. a kind of suction pipette head according to claim 3, it is characterised in that: the base (15) with a thickness of 1-2mm； First antibiotic layer (17) with a thickness of 2-3mm；The moisture resistance wet layer (16) with a thickness of 1-1.5mm；Second antibacterial Layer (18) with a thickness of 3-5mm；The third antibiotic layer (19) with a thickness of 4-5mm；The surface layer (20) with a thickness of 1- 3mm。