CN222384856U - Split piston sleeve pipette - Google Patents
Split piston sleeve pipette Download PDFInfo
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- CN222384856U CN222384856U CN202420856627.6U CN202420856627U CN222384856U CN 222384856 U CN222384856 U CN 222384856U CN 202420856627 U CN202420856627 U CN 202420856627U CN 222384856 U CN222384856 U CN 222384856U
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- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 16
- 239000007788 liquid Substances 0.000 abstract description 10
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 description 18
- 238000003466 welding Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011549 displacement method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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Abstract
本实用新型公开了一种分体式活塞套筒移液枪，包括一壳体、一驱动装置、一活塞、一第一套筒和一第二套筒；所述活塞的第一端与驱动装置传动连接，所述活塞的第二端自所述第二套筒的第一端插设于所述第二套筒内；所述第二套筒固定于所述壳体；所述第一套筒的第一端可拆卸地密封连接于所述第二套筒的第二端；所述第一套筒的内径与所述第二套筒的内径配合；所述第二套筒通过一限位结构对所述第一套筒限位。本实用新型的一种分体式活塞套筒移液枪，能够降低第一套筒和第二套筒加工时的同轴度的加工难度，且维护成本低。
The utility model discloses a split piston sleeve liquid transfer gun, comprising a shell, a driving device, a piston, a first sleeve and a second sleeve; the first end of the piston is drivingly connected to the driving device, and the second end of the piston is inserted into the second sleeve from the first end of the second sleeve; the second sleeve is fixed to the shell; the first end of the first sleeve is detachably sealed and connected to the second end of the second sleeve; the inner diameter of the first sleeve matches the inner diameter of the second sleeve; the second sleeve limits the first sleeve through a limiting structure. The utility model of a split piston sleeve liquid transfer gun can reduce the difficulty of coaxiality processing when processing the first sleeve and the second sleeve, and has low maintenance costs.
Description
Technical Field
The utility model belongs to the technical field of pipette guns, and particularly relates to a split piston sleeve pipette gun.
Background
Referring to fig. 1, the current operating principle of the pipette gun on the market is based on the air displacement method, in which liquid is sucked in and discharged through the displaced air. Each pipette has an internal piston 2 connected to a sleeve 1, the volume of air directly pushed out by the piston 2 being equal to the volume of liquid sucked in. Factors influencing the performance of the pipette mainly comprise 1, the relative tightness between the piston 2 and the sleeve 1, 2, concentricity (part tolerance) between parts of the piston 2 and the sleeve 1, wherein the better the concentricity is, the repeated movement of the piston 2 is, the pushed air is stable in volume, namely the pipette is good in stability, and 3, the dead volume between the piston 2 and the sleeve 1 is smaller, the better the dead volume is, and the dead volume is the volume of a gap between the piston 2 and the sleeve 1.
The structure of the existing pipette with air pressure detection function generally comprises a sleeve 1, a piston 2 and an air pressure adapter 3, wherein the piston 2 is inserted into the sleeve 1, the upper part of the sleeve 1 is welded with an adapter 4, the air pressure adapter 3 is connected with the adapter 4, and then the air pressure adapter 3 is connected with an air pressure sensor. The existing sleeve 1 is an integrated solution, and is connected with the air pressure adapter 3 through the welding adapter 4. The welding easily causes the deformation of the sleeve 1, the diameter of the sleeve 1 is generally about 5 mm and 6mm, and the welding on the small part is required to ensure that the sleeve cannot deform, so that the scheme has very high requirements on the production and processing of parts. And the length of the integral sleeve 1 is longer, so that the difficulty of ensuring concentricity of the sleeve during processing is high. In addition, when a malfunction occurs to suck the liquid into the sleeve 1 or when a breakage occurs in a portion of the sleeve 1, the entire sleeve 1 needs to be replaced, and the replacement process is troublesome and the maintenance cost is high.
In addition, the connecting structure between the piston 2 and the driving device of the conventional pipetting gun is rigid connection, and the concentricity of the piston 2 and the sleeve 1 is completely dependent on the processing quality and the assembly quality of parts, so that the requirements on the processing and the assembly of the parts are high.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model aims to provide a split piston sleeve pipette gun which can reduce the processing difficulty of coaxiality of a first sleeve and a second sleeve during processing and has low maintenance cost.
In order to achieve the above purpose, the utility model provides a split piston sleeve pipette which comprises a shell, a driving device, a piston, a first sleeve and a second sleeve, wherein the first end of the piston is in transmission connection with the driving device, the second end of the piston is inserted into the second sleeve from the first end of the second sleeve, the second sleeve is fixed on the shell, the first end of the first sleeve is detachably and hermetically connected with the second end of the second sleeve, the inner diameter of the first sleeve is matched with the inner diameter of the second sleeve, and the second sleeve limits the first sleeve through a limiting structure.
As one implementation mode, the second sleeve is integrally formed into an air pressure adapter and a linear duct, the air pressure adapter is communicated with the linear duct, the linear duct is coaxially communicated with the first sleeve, and the inner diameter of the linear duct is matched with the inner diameter of the first sleeve.
As one implementation mode, the end part of the straight pore canal of the second end of the second sleeve is recessed to form a first sleeve mounting groove, and the first end of the first sleeve is detachably inserted and fixed in the first sleeve mounting groove.
As one implementation mode, the first end of the first sleeve is sunken with the outer wall corresponding to the first sleeve mounting groove to form a sealing ring mounting groove, a sealing ring is mounted in the sealing ring mounting groove, and the first sleeve is in sealing fit with the second sleeve through the sealing ring.
The limiting structure comprises a flange edge, a radial limiting groove and a plurality of limiting bolts, wherein the outer wall of the first end of the first sleeve is adjacent to the end part of the second end of the second sleeve and extends outwards to form the flange edge, the end part of the first sleeve mounting groove adjacent to the second end of the second sleeve is recessed to form the radial limiting groove, the flange edge is arranged in the radial limiting groove and radially limits the first sleeve through the flange edge, a plurality of screw holes are formed in the end part of the second end of the second sleeve, the screw holes are located on the outer side of the radial limiting groove, and the limiting bolts are in threaded connection with the screw holes and press the flange edge through nuts of the limiting bolts and axially limit the flange edge.
As an embodiment, the second end of the first sleeve forms a nozzle connection.
As one embodiment, the air pressure adapter is connected with an air pressure sensor.
As an embodiment, the piston is connected to the driving device by a coaxiality adaptive fine adjustment mechanism.
The coaxiality self-adaptive fine adjustment mechanism comprises a driving block, an end piece, an elastic piece and a guide structure, wherein the driving block is connected with the driving device, a columnar space is formed in the driving block, a through hole is formed in one end of the columnar space, a hemispherical cambered surface is formed at the first end of the piston and extends into the columnar space from the through hole, the end piece is fixed on the periphery of the first end of the piston, the elastic piece is pressed between the end piece and the inner wall of one side, adjacent to the through hole, of the driving block, the first end of the piston is tightly pressed against the inner wall, far away from the through hole, of the driving block through the end piece, the guide structure is arranged in the second sleeve, and the guide structure guides the piston.
As one implementation mode, the guide structure adopts a shaft sleeve, a first end of the second sleeve is sunken to form a shaft sleeve mounting groove, the shaft sleeve is fixed in the shaft sleeve mounting groove, the inner diameter of the shaft sleeve is matched with the outer diameter of the piston, the shaft sleeve and the second sleeve are coaxially arranged, and the piston is inserted into the shaft sleeve and the second sleeve.
The utility model adopts the technical proposal, which has the following beneficial effects:
The utility model replaces the integrated sleeve with the split first sleeve and the split second sleeve, firstly reduces the processing difficulty of coaxiality of the first sleeve and the second sleeve during processing, secondly, only needs to replace the first sleeve when the split first sleeve and the split second sleeve are in misoperation to suck liquid into the first sleeve or when the first sleeve part is damaged, thus greatly reducing the maintenance cost. The limit structure is used for positioning the first sleeve in the axial direction and the radial direction, and the replacement of the first sleeve is very convenient. The adoption of the coaxiality self-adaptive fine adjustment mechanism ensures that only axial limit exists between the piston and the driving block, and flexibility exists in other directions, so that the mounting difficulty of the piston can be greatly reduced, the connection precision requirement between the piston and the driving device is reduced, and the coaxiality of the piston and the first sleeve and the second sleeve can be ensured. The guide structure is used for limiting the axial direction of the piston and ensuring concentricity of the piston and the first sleeve and the second sleeve.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a conventional pipette;
FIG. 2 is an external view of a split piston sleeve pipette according to an embodiment of the present application;
FIG. 3 is a schematic view of a part of the internal structure of a split piston sleeve pipette according to an embodiment of the present application;
FIG. 4 is a cross-sectional view of a split piston sleeve pipette of an embodiment of the present application;
FIG. 5 is an enlarged view of a portion of area A of FIG. 4;
fig. 6 is a schematic structural view of a split piston sleeve according to an embodiment of the present application.
Reference numerals illustrate:
fig. 1:
1-a sleeve;
2-a piston;
3-air pressure adapter;
4-an adapter.
Fig. 2 to 6:
1-a housing;
2-a piston;
3-a first sleeve;
31-a seal ring mounting groove, 32-a flange edge and 33-a suction nozzle connecting part;
4-a second sleeve;
41-an air pressure adapter, 42-a straight hole channel, 43-a first sleeve mounting groove, 44-a radial limit groove and 45-a limit bolt;
46-shaft sleeve mounting groove, 47-sealing structure and 48-guiding structure;
5-a sealing ring;
6-a coaxiality self-adaptive fine adjustment mechanism;
61-driving block, 62-end piece, 63-elastic piece and 64-shaft sleeve.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "configured," "connected," "coupled," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection, may be a mechanical connection, may be an electrical connection, may be a direct connection, may be an indirect connection via an intermediary, or may be a communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Example 1
Referring to fig. 2-5, a split piston sleeve pipette according to an embodiment of the utility model includes a housing 1, a driving device, a piston 2, a first sleeve 3 and a second sleeve 4, wherein a first end of the piston 2 is in transmission connection with the driving device, a second end of the piston 2 is inserted into the second sleeve 4 from a first end of the second sleeve 4, the second sleeve 4 is fixed to the housing 1, a first end of the first sleeve 3 is detachably and hermetically connected to a second end of the second sleeve 4, an inner diameter of the first sleeve 3 is matched with an inner diameter of the second sleeve 4, and the second sleeve 4 limits the first sleeve 3 through a limiting structure.
According to the utility model, the integral sleeve is replaced by the split first sleeve 3 and the split second sleeve 4, firstly, the length of a single sleeve is shortened, the processing difficulty of coaxiality of the first sleeve 3 and the second sleeve 4 in processing is reduced, and secondly, when the split first sleeve 3 and the split second sleeve 4 are in misoperation, liquid is sucked into the first sleeve 3, or part of the first sleeve 3 is damaged, only the first sleeve 3 is required to be replaced, so that the maintenance cost is greatly reduced.
As an embodiment, the second sleeve 4 is integrally formed with an air pressure adapter 41 and a linear duct 42, the air pressure adapter 41 is communicated with the linear duct 42, the linear duct 42 is coaxially communicated with the first sleeve 3, and the inner diameter of the linear duct 42 is matched with the inner diameter of the first sleeve 3.
The second sleeve 4 integrally forms the air pressure adapter 41 and the linear duct 42, and the welding is replaced by machining, so that the problems that the existing air pressure adapter 41 is high in welding processing difficulty and the sleeve is easy to deform are solved, the processing difficulty of the air pressure adapter 41 is reduced, meanwhile, the stability of the sleeve structure is guaranteed, the size of a part is guaranteed, and the loss cost in the production process is reduced.
As an embodiment, the end of the straight hole 42 at the second end of the second sleeve 4 is recessed to form a first sleeve mounting groove 43, and the first end of the first sleeve 3 is detachably inserted into and fixed in the first sleeve mounting groove 43.
The first sleeve mounting groove 43 provides space for mounting the first end of the first sleeve 3, providing a basis for ensuring that the inner diameter of the first sleeve 3 fits within the inner diameter of the linear bore 42 and that the first sleeve 3 communicates coaxially with the linear bore 42.
In one embodiment, the first end of the first sleeve 3 and the outer wall corresponding to the first sleeve mounting groove 43 are recessed to form a seal ring mounting groove 31, a seal ring 5 is mounted in the seal ring mounting groove 31, and the first sleeve 3 and the second sleeve 4 are in sealing fit through the seal ring 5.
The use of the sealing ring 5 ensures a sealing fit between the first sleeve 3 and the second sleeve 4.
As one implementation mode, the limiting structure comprises a flange edge 32, a radial limiting groove 44 and a plurality of limiting bolts 45, wherein the outer wall of the first end of the first sleeve 3 is adjacent to the end part of the second end of the second sleeve 4 and extends outwards to form the flange edge 32, the end part of the first sleeve mounting groove 43 adjacent to the second end of the second sleeve 4 is recessed to form the radial limiting groove 44, the flange edge 32 is arranged in the radial limiting groove 44 and radially limits the first sleeve 3 through the flange edge 32, the end part of the second end of the second sleeve 4 is provided with a plurality of screw holes, the screw holes are located outside the radial limiting groove 44, the limiting bolts 45 are screwed into the screw holes, and nuts of the limiting bolts 45 press the flange edge 32 and axially limit the flange edge 32.
The limit structure is used for positioning the first sleeve 3 in the axial direction and the radial direction, and the replacement of the first sleeve 3 is very convenient. The radial limit of the first sleeve 3 is realized through the matching of the radial limit groove 44 of the flange 32, and the flange 32 is pressed tightly and limited axially through the nuts of the limit bolts 45. The thickness of the flange 32 is greater than or equal to the axial depth of the radial limit groove 44.
When misoperation occurs, liquid is sucked into the first sleeve 3 or the first sleeve 3 is damaged, the limit bolts 45 are only required to be detached, and then the first sleeve 3 is pulled out for replacement, so that the replacement is very convenient.
As an embodiment, the second end of the first sleeve 3 forms a nozzle connection 33.
The nozzle connection part 33 is used to connect a disposable nozzle in use.
As an embodiment, the air pressure adapter 41 is connected to an air pressure sensor.
The air pressure sensor is used to monitor the air pressure intensity inside the second sleeve 4 through the air pressure adapter 41.
Example 2
Referring to fig. 6, a split piston-sleeve pipette according to a second embodiment of the present utility model has a structure substantially the same as that of the first embodiment, except that the piston 2 is connected to the driving device through a coaxiality adaptive fine-tuning mechanism 6.
As an implementation manner, the coaxiality self-adaptive fine adjustment mechanism 6 comprises a driving block 61, an end piece 62, an elastic piece 63 and a guiding structure, wherein the driving block 61 is connected with the driving device, a cylindrical space is formed inside the driving block, a through hole is formed at one end of the cylindrical space, a hemispherical cambered surface is formed at the first end of the piston 2 and extends into the cylindrical space from the through hole, the end piece 62 is fixed on the periphery of the first end of the piston 2, the elastic piece 63 is pressed between the end piece 62 and the inner wall of one side of the driving block 61 adjacent to the through hole, the elastic piece 63 tightly presses the first end of the piston 2 to the inner wall of one side of the driving block 61 far away from the through hole through the end piece 62, the guiding structure is arranged in the second sleeve 4, and the guiding structure guides the piston 2.
In this embodiment, the elastic member 63 is a spring. The elastic force of the elastic member 63 needs to ensure that the first end of the piston 2 is tightly pressed against the inner wall of the driving block 61 on the side far away from the through hole in the use process, so that the stability of the liquid displacement amount in the use process can be ensured.
As an embodiment, the guiding structure adopts a shaft sleeve 64, the first end of the second sleeve 4 is recessed to form a shaft sleeve mounting groove 46, the shaft sleeve 64 is fixed in the shaft sleeve mounting groove 46, the inner diameter of the shaft sleeve 64 is matched with the outer diameter of the piston 2, the shaft sleeve 64 is coaxially arranged with the second sleeve 4, and the piston 2 is inserted into the shaft sleeve 64 and the second sleeve 4.
The adoption of the coaxiality self-adaptive fine adjustment mechanism 6 ensures that only axial limit exists between the piston 2 and the driving block 61, and flexibility exists in other directions, and the piston is different from the existing rigid connection structure, so that the mounting difficulty of the piston 2 can be greatly reduced, the connection precision requirement between the piston 2 and a driving device is reduced, and the coaxiality of the piston 2 and the first sleeve 3 and the second sleeve 4 can be ensured.
The guiding structure is used for limiting the axial direction of the piston 2 and ensuring concentricity of the piston 2 with the first sleeve 3 and the second sleeve 4.
Example 3
Referring to fig. 1-5, a split piston sleeve pipette according to a third embodiment of the present utility model has a structure substantially the same as that of the first embodiment, except that the second sleeve 4 is formed with an in-line hole 42 but no air pressure adapter 41 is formed.
The split type piston sleeve pipette does not comprise an air pressure detection function, but still has the advantages that firstly the length of a single sleeve is shortened, the processing difficulty of coaxiality of the first sleeve 3 and the second sleeve 4 in processing is reduced, and secondly, when the split type first sleeve 3 and the split type second sleeve 4 are in misoperation, liquid is sucked into the first sleeve 3 or part of the first sleeve 3 is damaged, only the first sleeve 3 is needed to be replaced, and the maintenance cost is greatly reduced.
Example 4
The split type piston sleeve pipette according to the fourth embodiment of the utility model has the same structure as the first embodiment, and is characterized in that an external thread is formed on the outer wall of the first sleeve 3, an internal thread matched with the external thread is formed in the mounting groove of the first sleeve 3, the limiting structure comprises the external thread and the internal thread, the first sleeve 3 is screwed into the mounting groove of the first sleeve 3 through the external thread and the internal thread, and a sealing element is arranged between the first sleeve 3 and the second sleeve 4.
The thread structure can realize the positioning and the detachability of the first sleeve 3 and the second sleeve 4, and the sealing element can realize the sealing fit between the first sleeve and the second sleeve.
In other embodiments, other existing limiting structures capable of realizing the detachable sealing connection of the two pipelines can be adopted.
Example 5
The split type piston sleeve pipette gun is basically the same as the second embodiment in structure, and is characterized in that the guide structure comprises a plurality of arc-shaped duct pieces, the first end of the second sleeve 4 is recessed at intervals along the circumferential direction to form a plurality of guide piece mounting grooves, the arc-shaped duct pieces are fixed in the guide piece mounting grooves, the inner diameter of the arc-shaped duct pieces is matched with the outer diameter of the piston 2, the arc-shaped duct pieces are coaxially arranged with the second sleeve 4, and the piston 2 is inserted between the arc-shaped duct pieces and in the second sleeve 4.
The guide structure is not limited to the boss 64 and the tube sheet, and in other embodiments, other structures that ensure concentricity of the piston 2 with the first sleeve 3 and the second sleeve 4 may be employed.
Example 6
A split piston sleeve pipette according to the sixth embodiment of the present utility model has a structure substantially the same as that of the first embodiment, and is different in that a sealing structure 47 and a guiding structure 48 are provided at the first end of the second sleeve 4, and the sealing structure may be a pan plug seal, an O-ring or other existing sealing members. The guiding structure can adopt a shaft sleeve.
The use of the sealing structure 47 ensures tightness between the piston 2 and the second sleeve 4. The guide structure 48 is used to ensure concentricity of the piston 2 with the inner diameter of the second sleeve 4.
The present utility model has been described in detail with reference to the embodiments of the drawings, and those skilled in the art can make various modifications to the utility model based on the above description. Accordingly, certain details of the illustrated embodiments are not to be taken as limiting the utility model, which is defined by the appended claims.
Claims (10)
1. A split type piston sleeve pipette gun is characterized by comprising a shell, a driving device, a piston, a first sleeve and a second sleeve, wherein the first end of the piston is in transmission connection with the driving device, the second end of the piston is inserted into the second sleeve from the first end of the second sleeve, the second sleeve is fixed to the shell, the first end of the first sleeve is detachably and hermetically connected to the second end of the second sleeve, the inner diameter of the first sleeve is matched with the inner diameter of the second sleeve, and the second sleeve limits the first sleeve through a limiting structure.
2. The split piston sleeve pipette of claim 1 wherein said second sleeve is integrally formed with a pneumatic adapter and a linear port, said pneumatic adapter and said linear port being in communication, said linear port being in coaxial communication with said first sleeve, an inner diameter of said linear port being mated with an inner diameter of said first sleeve.
3. The split piston sleeve pipette of claim 2 wherein said linear bore end of said second sleeve second end is recessed to form a first sleeve mounting groove, said first sleeve first end being removably insertable into and secured within said first sleeve mounting groove.
4. The split piston sleeve pipette of claim 3 wherein the first end of said first sleeve is recessed from the outer wall corresponding to said first sleeve mounting groove to form a seal ring mounting groove in which a seal ring is mounted, said first sleeve and said second sleeve being sealingly engaged by said seal ring.
5. The split piston sleeve pipette of claim 3 wherein the limiting structure comprises a flange, a radial limiting groove and a plurality of limiting bolts, wherein the outer wall of the first end of the first sleeve extends outwards to form the flange adjacent to the end of the second sleeve, the end of the first sleeve mounting groove adjacent to the second end of the second sleeve is recessed to form the radial limiting groove, the flange is arranged in the radial limiting groove and radially limits the first sleeve through the radial limiting groove, the end of the second sleeve is provided with a plurality of screw holes, the screw holes are located outside the radial limiting groove, the limiting bolts are screwed into the screw holes, and nuts of the limiting bolts press the flange and axially limit the flange.
6. The split piston sleeve pipette of claim 1 wherein the second end of said first sleeve forms a nozzle connection.
7. The split piston sleeve pipette of claim 2 wherein said air pressure adapter is connected to an air pressure sensor.
8. The split piston sleeve pipette of claim 1 wherein said piston is connected to said drive means by a coaxiality adaptive fine adjustment mechanism.
9. The split type piston sleeve pipette of claim 8, wherein the coaxiality self-adaptive fine adjustment mechanism comprises a driving block, an end piece, an elastic piece and a guide structure, wherein the driving block is connected with the driving device, a columnar space is formed in the driving block, a through hole is formed in one end of the columnar space, a hemispherical cambered surface is formed at the first end of the piston and extends into the columnar space from the through hole, the end piece is fixed on the periphery of the first end of the piston, the elastic piece is pressed between the end piece and the inner wall of one side, adjacent to the through hole, of the driving block, the elastic piece presses the first end of the piston tightly against the inner wall of one side, far away from the through hole, of the driving block through the end piece, the guide structure is arranged in the second sleeve, and the guide structure guides the piston.
10. The split piston sleeve pipette of claim 9 wherein said guide structure is a sleeve, a first end of said second sleeve is recessed to form a sleeve mounting groove, said sleeve is secured within said sleeve mounting groove, an inner diameter of said sleeve is mated with an outer diameter of said piston, said sleeve is coaxially disposed with said second sleeve, and said piston is inserted within said sleeve and said second sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420856627.6U CN222384856U (en) | 2024-04-23 | 2024-04-23 | Split piston sleeve pipette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420856627.6U CN222384856U (en) | 2024-04-23 | 2024-04-23 | Split piston sleeve pipette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222384856U true CN222384856U (en) | 2025-01-24 |
Family
ID=94286059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420856627.6U Active CN222384856U (en) | 2024-04-23 | 2024-04-23 | Split piston sleeve pipette |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222384856U (en) |
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2024
- 2024-04-23 CN CN202420856627.6U patent/CN222384856U/en active Active
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Effective date of registration: 20250306 Address after: 201100 Room 501, building 11, No. 2168, Chenhang highway, Minhang District, Shanghai Patentee after: Naiyou Biotechnology (Shanghai) Co.,Ltd. Country or region after: China Patentee after: Naiyou Biotechnology (Jiangsu) Co.,Ltd. Address before: 201100 Room 501, building 11, No. 2168, Chenhang highway, Minhang District, Shanghai Patentee before: Naiyou Biotechnology (Shanghai) Co.,Ltd. Country or region before: China Patentee before: Naiyou Biotechnology (Jiaxing) Co.,Ltd. |