CN216093745U - Lengthened suction head of pipettor - Google Patents
Lengthened suction head of pipettor Download PDFInfo
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- CN216093745U CN216093745U CN202122412341.8U CN202122412341U CN216093745U CN 216093745 U CN216093745 U CN 216093745U CN 202122412341 U CN202122412341 U CN 202122412341U CN 216093745 U CN216093745 U CN 216093745U
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- suction head
- end part
- sliding block
- tip
- rear end
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Abstract
The utility model relates to a lengthened suction head of a pipettor, which comprises a suction head body, wherein a port and a liquid suction port are respectively arranged on the top end and the bottom end of the suction head body, the suction head body comprises a suction head rear end part and a suction head front end part, a circular cavity is arranged on the bottom end of the suction head rear end part, sliding grooves are oppositely arranged on two sides of the circular cavity, a guide rod is arranged in each sliding groove, a sliding block is arranged on each guide rod, a reset spring is arranged between the bottom of each sliding block and each sliding groove, each reset spring is sleeved on the outer part of each guide rod, the top end of the suction head front end part is embedded in the circular cavity of the suction head rear end part, the top end of the suction head front end part is fixedly connected with each sliding block, a plurality of threaded holes which are uniformly arranged at intervals are also arranged on the outer wall of the suction head rear end part, the threaded holes are communicated with the sliding grooves, and fasteners for clamping the sliding blocks are arranged in the threaded holes; the utility model effectively solves the problems that the existing suction head does not have the function of adjusting the length of the suction head, meets the use requirement by manufacturing the suction heads with different types and lengths, and has a narrow use range.
Description
Technical Field
The utility model relates to the technical field of biological experiment equipment, in particular to a lengthened suction head of a liquid transfer device.
Background
A pipette, also known as a pipette gun, is a device for transferring liquid quantitatively. In conducting analytical testing studies, small or minute amounts of liquid are typically removed using a pipette (pipette). The tip of the pipettor can be provided with a suction head which is matched with the pipettor for use, so that pipetting operation is convenient, and the pipettor is widely applied to laboratories of universities and scientific research institutions, hospitals, animal and plant research institutes and the like.
At present, the existing suction heads are all of an integrally formed structure, the function of adjusting the length of the suction head is not available, the use requirement can be met only by manufacturing the suction heads with different types and lengths, the use cost is increased, and the use range is narrow.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a lengthened suction head of a liquid transfer device aiming at the defects of the prior art, and the lengthened suction head effectively solves the problems that the existing suction head does not have the function of adjusting the length of the suction head, the suction heads with different types and lengths can meet the use requirements and the use range is narrow through the matching design of the front end part of the suction head, the rear end part of the suction head, a sliding chute, a sliding block, a guide rod and a return spring.
The technical scheme adopted by the utility model is as follows:
a lengthened pipette tip comprises a tip body, wherein a port and a liquid suction port are respectively arranged at the top end and the bottom end of the tip body, the tip body comprises a split type tip rear end part and a tip front end part, a circular cavity is arranged at the bottom end of the tip rear end part, sliding grooves communicated with the circular cavity are relatively arranged on two sides of the circular cavity, a guide rod is arranged in the sliding grooves, a sliding block in sliding connection with the guide rod is arranged on the guide rod, a reset spring is arranged between the bottom of the sliding block and the sliding grooves, the reset spring is sleeved on the outer part of the guide rod, the top end of the tip front end part is embedded in the circular cavity of the tip rear end part of the pipette tip and is in sliding connection with the circular cavity, the top end of the tip front end part of the pipette tip is fixedly connected with the sliding block, a plurality of threaded holes which are uniformly arranged at intervals are further arranged on the outer wall of the tip rear end part of the pipette tip, and the threaded holes are communicated with the sliding grooves, and a fastener for clamping the sliding block is arranged in the threaded hole.
Furthermore, a plurality of reinforcing ribs which are uniformly arranged are arranged on the circumferential direction of the upper outer wall of the rear end part of the suction head.
Furthermore, the reinforcing ribs are of a sheet structure.
Furthermore, a filter element is arranged inside the front end part of the suction head.
Furthermore, the filter element is made of ultra-high molecular polyethylene.
Furthermore, length scale marks are arranged on the outer wall of the front end part of the suction head.
Furthermore, the fastener is a bolt, the bolt is matched with the threaded hole, and the front end of the bolt penetrates into the mounting hole in the sliding block.
Furthermore, the rear end part and the front end part of the suction head are respectively made of transparent materials.
Compared with the prior art, the utility model has the beneficial effects that:
1. the suction head has a simple structure, is convenient to use, and effectively solves the problems that the existing suction head does not have the function of adjusting the length of the suction head, the suction heads with different types and lengths can meet the use requirements and the use range is narrow by the matching design of the front end part of the suction head, the rear end part of the suction head, the sliding chute, the sliding block, the guide rod and the return spring.
2. The length of the suction head body needs to be extended, the front end part of the suction head is pulled to move downwards by force, so that the top end of the front end part of the suction head slides downwards in the circle center cavity, the front end part of the suction head drives the sliding block to move along with the sliding block, the sliding block overcomes the elastic action of a return spring and moves downwards along the guide rod, the sliding block moves to a required position, a fastener is screwed into the threaded hole and fixes the sliding block, and the length of the suction head body is extended; on the contrary, when the length of the suction head body needs to be shortened, the fastener is unscrewed, the reset spring drives the sliding block to slide upwards along the guide block under the elastic action of the reset spring, then the sliding block drives the front end part of the suction head to move upwards in the circular cavity, and the front end part of the suction head is accommodated in the circular cavity of the rear end part of the suction head, so that the length of the suction head body is shortened. The length of the suction head can be adjusted according to actual requirements, so that the suction head is convenient for workers to use, and the application range of the suction head is effectively enlarged.
3. Through the matching of the sliding block, the sliding groove and the guide rod, the moving direction of the front end part of the suction head can be effectively limited, and the suction head can only move in the vertical direction; meanwhile, the stability of the movement of the front end part of the suction head in the circular cavity of the rear end part of the suction head is effectively enhanced, so that the front end part of the suction head is prevented from shaking during movement.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a partial cross-sectional view of the present invention;
FIG. 3 is an enlarged view taken at A in FIG. 2;
FIG. 4 is a state diagram of the present invention;
in the figure: 1. a suction head body; 2. the rear end part of the suction head; 3. the front end part of the suction head; 4. a threaded hole; 5. a bolt; 6. a liquid suction port; 7. an interface; 8. a circular cavity; 9. a guide bar; 10. a return spring; 11. a chute; 12. a filter element; 13. a slide block.
Detailed Description
In order to better understand the technical content of the utility model, specific embodiments are provided below, and the utility model is further described with reference to the accompanying drawings.
Referring to fig. 1 to 4, the present invention provides a lengthened pipette tip, comprising a tip body 1, wherein a port 7 and a liquid suction port 6 are respectively arranged on the top end and the bottom end of the tip body 1, the tip body 1 is connected with a joint of the pipette through the port 7, so that the tip body 1 can be tightly fixed on the pipette, the structure between the pipette and the tip body 1 is firm and stable, and is fast butted, liquid can be fast sucked through the liquid suction port 6 for pipetting operation, the tip body 1 comprises a split type tip rear end portion 2 and a tip front end portion 3, the port 7 is arranged on the top end of the tip rear end portion 2, the liquid suction port 6 is arranged on the bottom end of the tip front end portion 3, the bottom end of the tip rear end portion 2 is mutually connected with the top end of the tip front end portion 3, a circular cavity 8 is arranged on the bottom end of the tip rear end portion 2, and chutes 11 communicated with the circular cavity 8 are oppositely arranged on two sides of the circular cavity 8, a guide rod 9 is arranged in the sliding chute 11, a sliding block 13 in sliding connection with the guide rod 9 is arranged on the guide rod 9, the sliding block 13 is matched with the sliding chute 11, the sliding block 13 can move up and down along the guide rod 9, a return spring 10 is arranged between the bottom of the sliding block 13 and the bottom of the sliding chute 11, the return spring 10 is sleeved on the outside of the guide rod 9, the top end of the front end part 3 of the suction head is embedded in and is in sliding connection with the circular cavity 8 of the rear end part 2 of the suction head, the front end part 3 of the suction head can slide back and forth in the circular cavity 8, the top end of the front end part 3 of the suction head is fixedly connected with the sliding block 13, and through the matching of the sliding block 13 and the sliding chute 11, the moving direction of the front end part 3 of the suction head can be effectively limited, and only can move up and down in the vertical direction; meanwhile, when the sliding block 13 moves, the front end part 3 of the suction head can be driven to move along with the sliding block, a plurality of threaded holes 4 which are uniformly arranged at intervals are further formed in the outer wall of the rear end part 2 of the suction head, the threaded holes 4 are communicated with the sliding groove 11, a fastening piece used for clamping the sliding block 13 is arranged in each threaded hole 4, the fastening piece is screwed into each threaded hole 4, the sliding block 13 is clamped at the front end of the fastening piece, the sliding block 13 cannot move in the sliding groove 11, and the front end part 3 of the suction head is effectively ensured to be tightly fixed on the rear end part 2 of the suction head.
Specifically, a plurality of reinforcing ribs which are uniformly arranged are arranged on the circumferential direction of the upper outer wall of the rear end part 2 of the suction head; the strength and the hardness of the rear end part 2 of the suction head can be effectively enhanced through the reinforcing ribs, so that the service life of the suction head is longer.
Specifically, the reinforcing ribs are of a sheet structure.
Specifically, a filter element 12 is arranged in the front end part 3 of the suction head; the solution sample passes through the filter element 12, and insoluble impurities can be effectively filtered and intercepted, so that the filtering effect is further improved, and the quality of the solution sample is improved.
Specifically, the filter element 12 is made of ultra-high molecular weight polyethylene.
Specifically, the outer wall of the front end part 3 of the suction head is provided with length scale marks; the position of the front end part 3 of the suction head can be conveniently moved according to the specific numerical value of the length scale mark.
Specifically, the fastener is a bolt 5, the bolt 5 is matched with the threaded hole 4, and the front end of the bolt 5 penetrates into a mounting hole in the sliding block 13; the bolt 5 is screwed into the threaded hole 4, and the front end of the bolt 5 penetrates into the mounting hole of the sliding block 13, so that the sliding block 13 is clamped, the sliding block 13 cannot move relatively in the sliding groove 11, and the front end part 3 of the suction head is effectively and firmly fixed on the rear end part 2 of the suction head.
Specifically, the suction head rear end part 2 and the suction head front end part 3 are respectively made of transparent materials; the condition inside the suction head body 1 can be observed conveniently.
The working principle of the utility model is as follows:
when the sucker is used, if the length of the sucker body 1 needs to be extended, the bolt 5 is unscrewed, the sucker front end part 3 is pulled by force, so that the top end of the sucker front end part 3 slides downwards in the circular cavity 8, the top end of the sucker front end part 3 is connected with the sliding block 13, the sliding block 13 slides downwards along the guide rod 9 under the action of the elastic force of the return spring 10 while the sucker front end part 3 slides downwards, the sliding block 13 moves in the sliding groove 11, the sliding block 13 moves to a required position, the bolt 5 is screwed into the threaded hole 4, the front end of the bolt 5 penetrates into the mounting hole of the sliding block 13, so that the sliding block 13 is fixed at the position, and the sucker front end part 3 is stably fixed on the sucker rear end part 2; in addition, through the cooperation of the sliding block 13, the sliding groove 11 and the guide rod 9, the moving direction of the front end part 3 of the suction head can be effectively limited, so that the front end part 3 of the suction head can move out of the rear end part 2 of the suction head, and further the length extension of the suction head body 1 is realized, so that the suction head can be conveniently used by a worker.
If the length of the suction head body 1 needs to be shortened, the bolt 5 is unscrewed, under the elastic force action of the return spring 10, the return drives the sliding block 13 to move upwards along the guide rod 9, the sliding block 13 drives the suction head front end part 3 to slide upwards in the circular cavity 8 of the suction head rear end part 2 while moving, the upper part of the suction head front end part 3 is accommodated in the circular cavity 8 of the suction head rear end part 2, and after the sliding block 13 moves to a proper position, the sliding block 13 is fixed by the bolt 5, so that the length of the suction head body 1 is shortened. The utility model can be adjusted according to the actual required length of the suction head body 1, thereby effectively enlarging the application range of the suction head.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a pipettor adds elongated suction head, includes the suction head body, be equipped with interface and imbibition mouth, its characterized in that on the top of suction head body and the bottom respectively: tip and suction head front end behind the suction head body includes split type suction head, be equipped with circular cavity on the bottom of tip behind the suction head, be equipped with the spout that is linked together with it on circular cavity's the both sides relatively, be equipped with the guide bar in the spout, be equipped with sliding connection's slider with it on the guide bar, be equipped with reset spring between slider bottom and the spout, reset spring overlaps and establishes on the guide bar outside, the top of tip inlays inside and sliding connection with it of circular cavity of tip behind the suction head before the suction head, just the top and the slider fixed connection of tip before the suction head, still be equipped with a plurality of even interval arrangement's screw hole on the outer wall of tip behind the suction head, screw hole and spout intercommunication, threaded hole is equipped with the fastener that is used for the chucking slider.
2. A pipette extension tip according to claim 1, characterized in that: and a plurality of reinforcing ribs which are uniformly arranged are arranged on the upper outer wall of the rear end part of the suction head in the circumferential direction.
3. A pipette extension tip according to claim 2, characterized in that: the reinforcing ribs are of a sheet structure.
4. A pipette extension tip according to claim 1, characterized in that: a filter element is arranged in the front end of the suction head.
5. A pipette extension tip according to claim 4, characterized in that: the filter element is made of ultra-high molecular polyethylene.
6. A pipette extension tip according to claim 1, characterized in that: the outer wall of the front end part of the suction head is provided with length scale marks.
7. A pipette extension tip according to claim 1, characterized in that: the fastener is a bolt, the bolt is matched with the threaded hole, and the front end of the bolt penetrates into the mounting hole in the sliding block.
8. A pipette extension tip according to claim 1, characterized in that: the suction head rear end part and the suction head front end part are respectively made of transparent materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122412341.8U CN216093745U (en) | 2021-10-08 | 2021-10-08 | Lengthened suction head of pipettor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122412341.8U CN216093745U (en) | 2021-10-08 | 2021-10-08 | Lengthened suction head of pipettor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216093745U true CN216093745U (en) | 2022-03-22 |
Family
ID=80691012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122412341.8U Active CN216093745U (en) | 2021-10-08 | 2021-10-08 | Lengthened suction head of pipettor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216093745U (en) |
-
2021
- 2021-10-08 CN CN202122412341.8U patent/CN216093745U/en active Active
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