CN217392436U - Wide-range piston for liquid transfer gun - Google Patents
Wide-range piston for liquid transfer gun Download PDFInfo
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- CN217392436U CN217392436U CN202220990409.2U CN202220990409U CN217392436U CN 217392436 U CN217392436 U CN 217392436U CN 202220990409 U CN202220990409 U CN 202220990409U CN 217392436 U CN217392436 U CN 217392436U
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- clamping groove
- pipette
- annular clamping
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Abstract
The utility model relates to the technical field of range pistons in pipette, and discloses a wide-range piston for pipette, which comprises a piston cavity, wherein the inner cavity of the piston cavity is provided with a piston cavity, a piston polish rod is arranged in the piston cavity, and the piston polish rod is inserted and installed in the piston cavity and is in sliding connection with the piston cavity; one end of the piston cavity is provided with a liquid transferring component; and a sealing assembly is arranged in the inner cavity of the piston cavity. In the utility model, the sealing component arranged in the piston cavity can reduce the air volume in the cavity, and if the interior of the cavity is reduced to 50 microliters by the sealing component, only 150 microliters can be obtained, so that 1.5 microliters can be realized; under the wide-range state, the pipette tip of 20 microliters is inserted into the 1000-microliter cavity, so that the liquid transfer amount of 0.9 microliters can be made, and the liquid transfer amount with smaller capacity can be realized.
Description
Technical Field
The utility model relates to a range piston technical field among the liquid-transfering gun specifically is a wide range piston that liquid-transfering gun used.
Background
The pipette is one kind of pipettor, is commonly used in the laboratory to the removal of a small amount of or trace liquid, and the specification is different, and the pipette of different specifications matches and uses the rifle head of different sizes, and the shape of different manufacturers' production is also slightly different, but theory of operation and operating method are unanimous basically. The liquid-transfering gun belongs to a precise instrument, and is carefully used and stored, so that damage is prevented, and the measuring range is prevented from being influenced.
In the conventional piston of the prior pipetting gun, a cavity of 1000 microliter can be inserted with a tip of 50 microliter, but only 5 microliter pipetting is needed, and small-capacity pipetting is difficult.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides a wide range piston that liquid-transfering gun used, the problem of proposing in the background art has been solved to the not enough of prior art.
Technical scheme
In order to achieve the above object, the utility model provides a following technical scheme: a wide-range piston for a pipette comprises a piston cavity, wherein a piston cavity is arranged in an inner cavity of the piston cavity, a piston polish rod is arranged in the piston cavity, and the piston polish rod is inserted and arranged in the piston cavity and is in sliding connection with the piston cavity;
one end of the piston cavity is provided with a liquid transferring component;
and a sealing assembly is arranged in the inner cavity of the piston cavity.
The wide-range piston for the pipette is characterized in that one end, facing the pipette part, of the inner cavity of the piston cavity is provided with a first annular clamping groove;
the sealing assembly comprises a first sealing ring, and the first sealing ring is inserted into the first annular clamping groove.
The wide-range piston for the pipette comprises a first annular clamping groove, a second annular clamping groove and a first sealing ring, wherein the first annular clamping groove is formed in the first sealing ring, and the second annular clamping groove is formed in the second sealing ring.
In the wide-range piston for the pipette, a second annular clamping groove is formed in one end, away from the first annular clamping groove, of the piston cavity;
the sealing assembly comprises a second sealing ring, and the second sealing ring is installed in the second annular clamping groove in an inserted mode.
The wide-range piston for the pipette comprises a first sealing ring, a first annular clamping groove and a second annular clamping groove, wherein the first sealing ring is arranged in the first annular clamping groove.
In the wide-range piston for the pipette, the piston cavity is located between the first annular clamping groove and the second annular clamping groove, and a third annular clamping groove is formed in one side, close to the first annular clamping groove, of the piston cavity;
the sealing assembly comprises a third sealing ring, and the third sealing ring is installed in a third annular clamping groove in an inserted mode.
The wide-range piston for the pipette is characterized in that the overall dimension of the third sealing ring is matched with that of the third annular clamping groove.
The wide-range piston for the pipette tip is characterized in that the pipette tip is 1000 microliters.
The wide-range piston for the liquid-transfering gun is characterized in that the liquid-transfering component is detachably mounted at one end of the piston cavity far away from the piston polish rod.
The wide-range piston for the liquid transfer gun comprises a gun head, wherein one end of the gun head is inserted and installed in one end, far away from a piston polish rod, of a piston chamber;
the end of the gun head, which is far away from the piston polish rod, is provided with a conical part, and the end of the conical part, which is far away from the piston polish rod, is provided with a gun nozzle;
the mounting plate with the opening is installed between the gun head and the piston cavity, the side wall of one side of the mounting plate is fixedly mounted at one end, far away from the piston polish rod, of the piston cavity through a bolt, and one end, far away from the gun nozzle, of the gun head penetrates through the opening of the mounting plate and is inserted into the piston cavity.
Advantageous effects
The utility model provides a wide range piston that liquid-transfering gun used possesses following beneficial effect:
one, the utility model discloses in, through the seal assembly of installation in the piston cavity, can reduce the air volume in the cavity, reduce the air volume.
Secondly, the utility model discloses in, the technical problem that can solve is: for example, originally, a 1000 microliter chamber with 200 microliter of air inside; when the 1000 microliter lance tip is inserted, 1200 microliter of air is in the tip, and 1400 microliter of air is in the tip; for another example, if the air change in the piston is significant enough to be 1/100, then it is 14 microliters or more, so a 1000 microliter piston cannot be used to pipette small volumes; if the gun head is replaced by a 50-microliter gun head, 100 microliter of air in the gun head is added with 200 microliter in the cavity, 300 microliter is obtained, and the method is equivalent to the method capable of realizing smaller-quantity pipetting on the original basis; the variation of that 1/100 is exactly 3 microliters, however, in practice, a conventional piston, 1000 microliter chamber can be inserted with a 50 microliter tip, but only with 3.5 microliter pipetting; if the interior of the cavity is as low as 50 microliters by this sealing component, it is only 150 microliters, so it can be 1.5 microliters; under the wide-range state, the pipette tip of 20 microliters is inserted into the 1000-microliter cavity, so that the liquid transfer amount of 0.9 microliters can be made, and the liquid transfer amount with smaller capacity can be realized.
Thirdly, the utility model discloses in, move liquid part and can conveniently peg graft and install, realize the change to different capacity rifle heads.
Drawings
FIG. 1 is a three-dimensional schematic view of a wide range piston and frame combination for a pipette of the present invention;
FIG. 2 is a three-dimensional view of one of the viewing angles of a wide range piston in combination with a frame for a pipette of the present invention;
fig. 3 is a schematic front view of a wide range piston for a pipette of the present invention;
FIG. 4 is a schematic cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is an enlarged view of portion A of FIG. 4;
FIG. 6 is an enlarged view of portion B of FIG. 4;
fig. 7 is an enlarged schematic view of a portion C in fig. 4.
In the figure: 1. a piston cavity; 101. a piston chamber; 102. a first ring-shaped card slot; 103. a second annular card slot; 104. a third ring-shaped clamp groove; 2. a piston polish rod; 3. a gun head; 31. a tapered portion; 32. a gun nozzle; 4. mounting a plate; 5. a first seal ring; 6. a second seal ring; 7. and a third sealing ring.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate an orientation or a positional relationship based on the orientation or the positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but not for indicating or implying that the device or the element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore the terms describing the positional relationship in the drawings are only used for illustrative purposes and should not be construed as limitations of the present patent, and specific meanings of the above terms can be understood according to specific situations by those of ordinary skill in the art.
In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being either a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
Example one
As shown in fig. 1-7, the utility model provides a technical solution: the measuring range piston comprises a piston cavity 1, a piston cavity 101 is formed in the inner cavity of the piston cavity 1, a piston polish rod 2 is installed in the piston cavity 101, and the piston polish rod 2 is installed in the piston cavity 101 in an inserted mode and is connected with the piston cavity 101 in a sliding mode;
one end of the piston cavity 1 is provided with a liquid transferring component;
the piston chamber 101 is internally fitted with a sealing assembly.
The seal assembly mounted within the piston chamber 101 functions to: reduce the air volume in the cavity, reduce the air volume, the technical problem that can solve is: for example, originally a 1000 microliter chamber with, say, 250 microliter of air inside; when the 1000 microliter lance tip is inserted, 1250 microliter of air is in the tip, which adds up to 1500 (1250 + 250) air; for another example, if the air change in the piston is significant enough to be 1/100, then it is 15 microliters or more, so a 1000 microliter piston cannot be used to pipette small volumes; if the gun head is replaced by a 200 microliter gun head, 350 microliter of air in the gun head and 600 microliter of air in the cavity are added, which is equivalent to the effect that a smaller amount of liquid transfer can be realized on the original basis; the variation of that 1/100 is exactly 6 microliters, but in practice a conventional piston, 1000 microliter chamber can be inserted with a 50 microliter tip, but only with a 3.5 microliter pipette; if the interior of the cavity is as low as 50 microliters by this sealing component, it is only 150 microliters, so it can be 1.5 microliters; in this wide range, a pipette tip of 20 microliters was inserted into the 1000-microliter chamber, so that a liquid transfer of 0.9 microliters could be performed.
Example two
1-7, the improvement is based on the first embodiment:
specifically, a first annular clamping groove 102 is formed in one end, facing the liquid transfer component, of the inner cavity of the piston cavity 1;
the sealing assembly comprises a first sealing ring 5, and the first sealing ring 5 is inserted into the first annular clamping groove 102.
The first seal ring 5 is one of the components of the seal assembly.
Specifically, the outer dimension of the first seal ring 5 matches the outer dimension of the first ring groove 102.
Thereby facilitating the mounting of the first seal ring 5.
Specifically, a second annular clamping groove 103 is formed at one end of the piston chamber 101, which is far away from the first annular clamping groove 102;
the sealing assembly comprises a second sealing ring 6, and the second sealing ring 6 is inserted and installed in the second annular clamping groove 103.
The second seal ring 6 is another component in the seal assembly.
Specifically, the outer dimension of the second seal ring 6 matches the outer dimension of the second annular groove 103.
So that the mounting of the second seal ring 6 can be facilitated.
Specifically, the piston cavity 101 is located between the first ring groove 102 and the second ring groove 103, and a third ring groove 104 is disposed on a side close to the first ring groove 102;
the sealing assembly comprises a third sealing ring 7, and the third sealing ring 7 is inserted and installed in the third annular clamping groove 104.
The third sealing ring 7 is a key ring in the sealing assembly, and the volume of the cavity is as low as 50 microliters, namely only 150 microliters, through the third sealing ring 7, so that 1.5 microliters can be achieved, and the volume of the liquid to be removed can be 1 microliter by inserting a 50 microliter gun head into the cavity with the wide range and 1000 microliters.
Specifically, the external dimension of the third seal ring 7 matches with the external dimension of the third ring-shaped clamping groove 104.
Thereby facilitating the mounting of the third sealing ring 7.
Specifically, the lance tip 3 is a 1000-microliter lance tip.
When a tip of 1000. mu.l is used, a liquid displacement of 1. mu.l can be achieved.
Specifically, the liquid-transfering component is detachably mounted on one end of the piston cavity 1 far away from the piston polish rod 2.
Thereby facilitating the mounting and dismounting of the pipetting member.
Specifically, the liquid transfer component comprises a gun head 3, one end of the gun head 3 is inserted and installed in the piston cavity 101 at one end far away from the piston polish rod 2;
the end of the gun head 3 far away from the piston polish rod 2 is provided with a conical part 31, and the end of the conical part 31 far away from the piston polish rod 2 is provided with a gun nozzle 32;
a mounting plate 4 with an opening is arranged between the gun head 3 and the piston cavity 1, the side wall of one side of the mounting plate 4 is fixedly mounted at one end of the piston cavity 1 far away from the piston polish rod 2 through a bolt, and one end of the gun head 3 far away from the gun nozzle 32 is penetrated through the opening of the mounting plate 4 and is inserted into the piston cavity 101.
Thus realizing the preferable mode of inserting, mounting and dismounting the gun head 3.
In summary, the wide-range piston for the pipette provided by the embodiment has the following advantages:
the utility model discloses in, through the seal assembly of installation in the piston cavity 101, can reduce the air volume in the cavity, reduce the air volume.
During the use, through the seal assembly of installation in the piston cavity 101, can reduce the air volume in the cavity, reduce the air volume, the technical problem that can solve is: for example, originally, a 1000 microliter chamber with 200 microliter of air inside; when the 1000 microliter lance head is inserted, 1200 microliter of air is contained in the lance head, and 1400 (120 + 200) of air is contained in the lance head; for another example, if the air change in the piston is significant enough to 1/100, the air change is more than 14 microliters, so that a 1000-microliter piston cannot perform small-volume pipetting; if the gun head is replaced by a 50-microliter gun head, 100 microliter of air in the gun head is added with 200 microliter in the cavity, 300 microliter is obtained, and the method is equivalent to the method capable of realizing smaller-quantity pipetting on the original basis; the variation of that 1/100 is exactly 3 microliters, however, in practice, a conventional piston, 1000 microliter chamber can be inserted with a 50 microliter tip, but can only be used with 3.5 microliter pipetting; if the interior of the cavity is as low as 50 microliters by this seal assembly, then only 150 microliters, and thus 1.5 microliters, can be achieved; in this wide range, a pipette tip of 20 microliters was inserted into the 1000-microliter chamber, so that a liquid transfer of 0.9 microliters could be performed.
The above is only a preferred embodiment of the present invention, and not intended to limit the scope of the invention, and it should be appreciated by those skilled in the art that various equivalent substitutions and obvious changes made in the specification and drawings should be included within the scope of the present invention.
Claims (10)
1. The utility model provides a wide range piston that pipette was used, includes piston cavity (1), its characterized in that: the inner cavity of the piston cavity (1) is provided with a piston cavity (101), a piston polish rod (2) is installed in the piston cavity (101), and the piston polish rod (2) is installed in the piston cavity (101) in an inserted mode and is in sliding connection with the piston cavity (101);
one end of the piston cavity (1) is provided with a liquid-transferring component;
and a sealing assembly is arranged in the inner cavity of the piston chamber (101).
2. The wide range piston for a pipette of claim 1, wherein: a first annular clamping groove (102) is formed in one end, facing the liquid transfer component, of the inner cavity of the piston cavity (1);
the sealing assembly comprises a first sealing ring (5), and the first sealing ring (5) is installed in the first annular clamping groove (102) in an inserted mode.
3. The wide range piston for a pipette as recited in claim 2 wherein: the external dimension of the first sealing ring (5) is matched with the external dimension of the first annular clamping groove (102).
4. The wide range piston for a pipette as recited in claim 1, wherein: a second annular clamping groove (103) is formed in one end, far away from the first annular clamping groove (102), of the piston cavity (101);
the sealing assembly comprises a second sealing ring (6), and the second sealing ring (6) is installed in the second annular clamping groove (103) in an inserting mode.
5. The wide range piston for a pipette as recited in claim 4, wherein: the external dimension of the second sealing ring (6) is matched with the external dimension of the second annular clamping groove (103).
6. The wide range piston for a pipette as recited in claim 1, wherein: the piston cavity (101) is positioned between the first annular clamping groove (102) and the second annular clamping groove (103), and a third annular clamping groove (104) is formed in one side, close to the first annular clamping groove (102);
the sealing assembly comprises a third sealing ring (7), and the third sealing ring (7) is installed in a third annular clamping groove (104) in an inserted mode.
7. The wide range piston for a pipette as recited in claim 6 wherein: the external dimension of the third sealing ring (7) is matched with that of the third annular clamping groove (104).
8. The wide range piston for a pipette of claim 1, wherein: the liquid transfer component is detachably arranged at one end of the piston cavity (1) far away from the piston polish rod (2).
9. The wide range piston for a pipette of claim 8, wherein: the liquid transfer component comprises a gun head (3), and one end of the gun head (3) is inserted and installed in one end of the piston cavity (101) far away from the piston polish rod (2);
one end of the gun head (3) far away from the piston polish rod (2) is provided with a conical part (31), and one end of the conical part (31) far away from the piston polish rod (2) is provided with a gun nozzle (32);
the mounting plate (4) with the opening is installed between the gun head (3) and the piston cavity (1), the side wall of one side of the mounting plate (4) is fixedly mounted at one end, far away from the piston polish rod (2), of the piston cavity (1) through a bolt, one end, far away from the gun nozzle (32), of the gun head (3) penetrates through the opening of the mounting plate (4) and is inserted into the piston cavity (101).
10. The wide range piston for a pipette of claim 9, wherein: the lance head (3) is a 1000 microliter lance head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220990409.2U CN217392436U (en) | 2022-04-27 | 2022-04-27 | Wide-range piston for liquid transfer gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220990409.2U CN217392436U (en) | 2022-04-27 | 2022-04-27 | Wide-range piston for liquid transfer gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217392436U true CN217392436U (en) | 2022-09-09 |
Family
ID=83143153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220990409.2U Active CN217392436U (en) | 2022-04-27 | 2022-04-27 | Wide-range piston for liquid transfer gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217392436U (en) |
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2022
- 2022-04-27 CN CN202220990409.2U patent/CN217392436U/en active Active
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