CN214916213U

CN214916213U - High-tolerance ultralow adsorption suction head

Info

Publication number: CN214916213U
Application number: CN202023097398.5U
Authority: CN
Inventors: 陈宁; 李晓灵; 陈栎旭; 刘伊扬
Original assignee: Jiaxing Yishuo Precision Mould Co ltd
Current assignee: Jiaxing Yishuo Precision Mould Co ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-11-30
Anticipated expiration: 2030-12-21

Abstract

The utility model discloses a high resistant ultralow absorption suction head, involve the suction head field, including the suction head body, the suction head body is including getting liquid end and link, gets the up end of liquid end and the lower terminal surface middle part fixed connection of link, gets the equal fixedly connected with connecting rod of both sides inner wall of liquid end, be provided with the rubber dog between two connecting rods, a terminal surface and the rubber dog fixed connection of connecting rod, the top of rubber dog is provided with the stopper, the through-hole with connecting rod looks adaptation is seted up at the stopper middle part, the stopper is located the inner chamber of getting the liquid end and with get liquid end looks adaptation, the inner chamber middle part of link is provided with the inner tube. The utility model discloses be provided with the sealing rubber circle in the inner chamber of link, when sealing rubber circle joint was in upper end ring groove, the through-hole that the stopper was seted up was inserted to the rubber dog this moment, when can preventing that the aspirator from keeping flat, the cross infection when having avoided next sample in the liquid inflow aspirator's inside in the suction head body.

Description

High-tolerance ultralow adsorption suction head

Technical Field

The utility model relates to a suction head field, in particular to high resistant ultralow adsorption suction head.

Background

In the fields of medical care, medicine, gene and protein research, biological research, drug development laboratories, and other biotechnology applications, it is often necessary to manipulate laboratory samples using pipettes in various laboratory protocols, where a volume of liquid is drawn into the pipette using the pipettes and then the liquid is dispensed into one or more dispensed volumes, and the principle of the pipettes is a piston motion, and when a tip is mounted on the pipettes, the piston in the pipettes sucks a segment of air, and the tip simultaneously sucks a segment of liquid of equal volume.

The present ultra-low absorption suction head of high resistance to chemical industry is when taking the liquid that needs to detect, if the aspirator is put flat, liquid gets into the pipettor inside and the adhesion on the pipettor through the suction head easily, after the pipettor changed new suction head, new suction head can receive the pollution, cause the cross contamination of next sample, the present ultra-low absorption suction head of high resistance to chemical industry of on the other hand, when placing, the dust drops in the middle of the inner chamber of suction head from the opening part easily, and lead to can producing certain error when detecting the liquid sample. Therefore, it is necessary to provide a high-durability ultra-low adsorption tip to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high resistant ultralow adsorption suction head to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a high-resistance ultra-low adsorption suction head comprises a suction head body, wherein the suction head body comprises a liquid taking end and a connecting end, the upper end face of the liquid taking end is fixedly connected with the middle part of the lower end face of the connecting end, the inner walls on the two sides of the liquid taking end are fixedly connected with connecting rods, a rubber stop block is arranged between the two connecting rods, one end face of each connecting rod is fixedly connected with the rubber stop block, a limiting block is arranged above the rubber stop block, a through hole matched with the connecting rod is formed in the middle of the limiting block, the limiting block is positioned in an inner cavity of the liquid taking end and matched with the liquid taking end, an inner tube is arranged in the middle of the inner cavity of the connecting end, the lower end of the inner tube penetrates through the middle part of the inner wall of the lower end of the connecting end and is communicated with the inner cavity of the liquid taking end, the inner tube is matched with the inner cavity of the upper end of the liquid taking end, and the lower end face of the inner tube is fixedly connected with the upper end face of the limiting block, the equal fixedly connected with baffle in both sides face middle part of inner tube, first spout has been seted up to link both sides inner wall lower extreme, the one end of baffle be located the inner chamber of first spout and with first spout looks adaptation, two the equal fixedly connected with reset spring of lower surface of baffle, reset spring's lower extreme and the lower extreme inner wall fixed connection of link.

Preferably, the upper end of the outer side surface of the inner tube is bonded with an elastic rubber sealing ring, a pipette barrel is arranged in an inner cavity of the connecting end, and the connecting end is matched with the pipette barrel.

Preferably, the upper end of the inner tube is inserted into the inner cavity of the barrel of the liquid transfer device, the inner tube is matched with the inner cavity of the barrel of the liquid transfer device, and the lower end of the outer side surface of the barrel of the liquid transfer device is provided with two annular clamping grooves.

Preferably, the middle part of the inner wall of the periphery of the connecting end is bonded with a sealing rubber ring, and the sealing rubber ring is matched with the annular clamping groove.

Preferably, the upper ends of the two sides of the connecting end are fixedly connected with sliding blocks, and the middle of the lower end face of each sliding block is provided with a groove.

Preferably, the upper end of the suction head body is provided with a circular cover matched with the suction head body, and the inner walls of two sides of the circular cover are provided with second sliding grooves matched with the sliding blocks.

Preferably, a third sliding groove matched with the sliding block is formed in the upper end of the inner wall of one side of the second sliding groove, and a rubber pad matched with the groove is bonded on the inner wall of the lower end of the third sliding groove.

The utility model discloses a technological effect and advantage:

1. the utility model discloses a be provided with the sealing rubber circle at the inner chamber of link, when the sealing rubber circle joint is in the annular groove of lower extreme, the aspirator can normally take liquid, when the sealing rubber circle joint is in upper end annular groove, the rubber dog inserts the through-hole that the stopper was seted up this moment, can prevent the aspirator from keeping flat, the liquid in the suction head body flows into the aspirator inside, cross infection when having avoided next sample;

2. the utility model discloses a be provided with circular lid in the upper end of suction head body, with the vertical second spout upper end inner wall that removes of slider, rotating circular lid, in moving the inner chamber of third spout with the slider, the rubber pad takes place shape elasticity becomes the joint to the inner chamber of recess, can prevent in daily use or when placing, the dust drops in the middle of the inner chamber of suction head body from the opening part, and leads to the detected data error to appear.

Drawings

Fig. 1 is a front view of the overall structure of the present invention.

Fig. 2 is a schematic view of the overall structure section of the present invention.

Fig. 3 is a schematic side sectional view of the circular cap structure of the present invention.

Fig. 4 is a schematic view of the circular cap structure of the present invention.

In the figure: 1. a suction head body; 2. taking a liquid end; 3. a connecting end; 4. a connecting rod; 5. a rubber stopper; 6. a limiting block; 7. an inner tube; 8. a baffle plate; 9. a first chute; 10. a return spring; 11. a pipette barrel; 12. an annular neck; 13. sealing the rubber ring; 14. a slider; 15. a groove; 16. a circular cover; 17. a second chute; 18. a third chute; 19. and (7) a rubber pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a high-tolerance ultra-low adsorption suction head as shown in figures 1-4, which comprises a suction head body 1, wherein the suction head body 1 comprises a liquid taking end 2 and a connecting end 3, the upper end surface of the liquid taking end 2 is fixedly connected with the middle part of the lower end surface of the connecting end 3, the middle part of the inner cavity of the connecting end 3 is provided with an inner tube 7, the lower end of the inner tube 7 penetrates through the middle part of the inner wall of the lower end of the connecting end 3 and is communicated with the inner cavity of the liquid taking end 2, the inner tube 7 is matched with the inner cavity of the liquid taking end 2, the lower end of the inner tube 7 can vertically move in the inner cavity of the liquid taking end 2, the middle parts of the two side surfaces of the inner tube 7 are fixedly connected with a baffle 8, the baffle 8 can be synchronously driven to move by the vertical movement of the inner tube 7, the lower ends of the inner walls at the two sides of the connecting end 3 are provided with first chutes 9, one end of the baffle 8 is positioned in the inner cavity of the first chutes 9 and is matched with the first chutes 9, the first chutes 9 can limit the moving range of the baffle 8, simultaneously first spout 9 can prevent to drop from suction head body 1 with baffle 8 fixed connection to inner tube 7, the equal fixedly connected with reset spring 10 of lower surface of two baffles 8, reset spring 10's lower extreme and the lower extreme inner wall fixed connection of link 3, and elastic deformation can take place for reset spring 10, and reset spring 10 can remain baffle 8 throughout in the position of laminating with first spout 9 upper end inner wall when not receiving downward pressure.

Connecting rods 4 are fixedly connected to the inner walls of two sides of the liquid taking end 2, a rubber stopper 5 is arranged between the two connecting rods 4, one end face of each connecting rod 4 is fixedly connected with the rubber stopper 5, the two connecting rods 4 play a role in fixing the rubber stopper 5, a stopper 6 is arranged above the rubber stopper 5, a through hole matched with the connecting rod 4 is formed in the middle of the stopper 6, the stopper 6 is positioned in an upper end inner cavity of the liquid taking end 2 and matched with an upper end inner cavity of the liquid taking end 2, the stopper 6 can vertically move at the upper end of the inner cavity of the liquid taking end 2, a sealing gasket is bonded on the outer side face of the stopper 6, the lower end face of the inner pipe 7 is fixedly connected with the upper end face of the stopper 6, the stopper 6 can be driven to synchronously move by the movement of the inner pipe 7, an elastic rubber sealing ring is bonded on the upper end of the outer side face of the inner pipe 7, a barrel 11 is arranged in an inner cavity of the connecting end 3, the connecting end 3 is matched with a pipette barrel 11, the pipette barrel 11 can vertically move in an inner cavity of the connecting end 3, the upper end of the inner tube 7 is inserted in the inner cavity of the pipette barrel 11, the inner tube 7 is matched with the inner cavity of the pipette barrel 11, the inner tube 7 can vertically move in the inner cavity of the pipette barrel 11, the lower end of the outer side surface of the pipette barrel 11 is provided with two annular clamping grooves 12, the middle part of the inner wall of the peripheral side of the connecting end 3 is bonded with a sealing rubber ring 13, the sealing rubber ring 13 is matched with the annular clamping grooves 12, when the pipette barrel 11 moves downwards, the sealing rubber ring 13 is clamped in the inner cavity of the annular clamping grooves 12 through elastic deformation, the upper ends of the two sides of the connecting end 3 are fixedly connected with sliding blocks 14, the middle part of the lower end surface of the sliding blocks 14 is provided with a groove 15, the upper end of the suction head body 1 is provided with a circular cover 16 matched with the suction head body 1, second chute 17 with slider 14 looks adaptation is all seted up to the both sides inner wall of circular lid 16, slider 14 can be in the inner chamber vertical movement of second chute 17, third chute 18 with slider 14 looks adaptation is seted up to one side inner wall upper end of second chute 17, slider 14 can carry out horizontal migration in the inner chamber of third chute 18, the lower extreme inner wall bonding of third chute 18 has the rubber pad 19 with recess 15 looks adaptation, rubber pad 19 can be through the elastic deformation joint of self in the inner chamber of recess 15.

The utility model discloses the theory of operation:

when the device is used, firstly, a pipette barrel 11 is inserted into the bottom of an inner cavity of a connecting end 3, an inner tube 7 is inserted into the inner cavity of the pipette barrel 11 under the limitation of a baffle plate 8, then a sealing rubber ring 13 is clamped into an annular clamping groove 12 at the lower end, at the moment, a liquid sucker is communicated with a suction head body 1 and can normally collect liquid, then, when enough liquid is collected, the sealing rubber ring 13 is clamped into the sealing rubber ring 13 at the upper part, at the moment, the lower end of the pipette barrel 11 pushes the baffle plate 8 to move downwards, the inner tube 7 is driven by the movement of the baffle plate 8 to synchronously move downwards, the limiting block 6 is driven by the downward movement of the inner tube 7 to synchronously move downwards, so that the rubber stop block 5 is clamped into a through hole formed in the middle part of the limiting block 6 by the limiting block 6, at the moment, the inner cavity of the liquid sucker is not communicated with the inner cavity of the suction head body 1, and when the liquid sucker is prevented from being horizontally arranged, the liquid in the sucker body 1 flows into the inner cavity of the liquid sucker, so that cross infection in the next sampling is avoided;

then, a circular cover 16 is arranged above the suction head body 1, the sliding blocks 14 at the upper ends of the two sides of the connecting end 3 are inserted into the inner cavity of the second sliding groove 17, then the groove 15 is inserted into the inner wall of the upper end of the second sliding groove 17, and then the circular cover 16 is rotated, so that the sliding blocks 14 move into the inner cavity of the third sliding groove 18, at the moment, the rubber pad 19 is elastically deformed and clamped into the inner cavity of the groove 15, and dust can be prevented from falling into the inner cavity of the suction head body 1 from the opening in daily use or placement, and errors of detection data are caused.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a high resistant ultralow adsorption of suction head, includes suction head body (1), its characterized in that: the suction head body (1) comprises a liquid taking end (2) and a connecting end (3), the upper end face of the liquid taking end (2) is fixedly connected with the middle part of the lower end face of the connecting end (3), the inner walls of the two sides of the liquid taking end (2) are fixedly connected with connecting rods (4), a rubber stop block (5) is arranged between the two connecting rods (4), one end face of each connecting rod (4) is fixedly connected with the rubber stop block (5), a limit block (6) is arranged above the rubber stop block (5), a through hole matched with the connecting rods (4) is formed in the middle part of the limit block (6), the limit block (6) is positioned in an upper end inner cavity of the liquid taking end (2) and matched with the upper end of the liquid taking end (2), an inner tube (7) is arranged in the middle part of the inner cavity of the connecting end (3), the lower end of the inner tube (7) penetrates through the middle part of the inner wall of the lower end of the connecting end (3) and is communicated with the inner cavity of the liquid taking end (2), inner tube (7) and the upper end inner chamber looks adaptation of getting liquid end (2), the lower terminal surface of inner tube (7) and the up end fixed connection of stopper (6), the equal fixedly connected with baffle (8) in both sides face middle part of inner tube (7), first spout (9) have been seted up to link (3) both sides inner wall lower extreme, the one end of baffle (8) be located the inner chamber of first spout (9) and with first spout (9) looks adaptation, two the equal fixedly connected with reset spring (10) of lower surface of baffle (8), the lower extreme of reset spring (10) and the lower extreme inner wall fixed connection of link (3).

2. The high tolerance ultra-low adsorption tip of claim 1, wherein: the rubber sealing ring is bonded to the upper end of the outer side face of the inner tube (7), a pipette barrel (11) is arranged in the inner cavity of the connecting end (3), and the connecting end (3) is matched with the pipette barrel (11).

3. The high tolerance ultra-low adsorption tip of claim 2, wherein: the upper end of inner tube (7) is pegged graft in the inner chamber of pipettor barrel (11), inner tube (7) and the inner chamber looks adaptation of pipettor barrel (11), two ring groove (12) have been seted up to the lateral surface lower extreme of pipettor barrel (11).

4. The high tolerance ultra-low adsorption tip of claim 3, wherein: the middle part of the inner wall of the periphery of the connecting end (3) is bonded with a sealing rubber ring (13), and the sealing rubber ring (13) is matched with the annular clamping groove (12).

5. The high tolerance ultra-low adsorption tip of claim 4, wherein: the upper ends of the two sides of the connecting end (3) are fixedly connected with sliding blocks (14), and the middle of the lower end face of each sliding block (14) is provided with a groove (15).

6. The high tolerance ultra-low adsorption tip of claim 5, wherein: the upper end of the suction head body (1) is provided with a circular cover (16) matched with the suction head body (1), and the inner walls of the two sides of the circular cover (16) are provided with second sliding grooves (17) matched with the sliding blocks (14).

7. The high tolerance ultra-low adsorption tip of claim 6, wherein: and a third sliding groove (18) matched with the sliding block (14) is formed in the upper end of the inner wall of one side of the second sliding groove (17), and a rubber pad (19) matched with the groove (15) is bonded on the inner wall of the lower end of the third sliding groove (18).