CN209885842U - Eight-channel pipettor - Google Patents
Eight-channel pipettor Download PDFInfo
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- CN209885842U CN209885842U CN201920193349.XU CN201920193349U CN209885842U CN 209885842 U CN209885842 U CN 209885842U CN 201920193349 U CN201920193349 U CN 201920193349U CN 209885842 U CN209885842 U CN 209885842U
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Abstract
The utility model discloses an eight pipettors, including pipettor main part and the control mechanism of control pipettor main part absorption and release liquid, the pipettor main part includes the shell, eight single-lane pipettors in the shell of the fixed shell of dismantlement, eight single-lane set up side by side in the shell, each single-lane pipettor all includes the urceolus, the inner tube, the graduated flask, insert the piston rod in the graduated flask, the inner push rod, the suction nozzle, the urceolus, the inner tube, the graduated flask is concentric, and the inner tube sets up between urceolus and graduated flask, graduated flask and urceolus fixed connection, the top of inner tube exceeds the graduated flask, and to the top formation recess of centre of a circle extension and graduated flask, be provided with the spring in the recess, the both ends of spring respectively with graduated flask and inner tube fixed connection, spring compression, inner tube downstream, the urceolus is stretched out. The utility model discloses rational in infrastructure, can move back the suction head automatically.
Description
Technical Field
The utility model belongs to the biochemistry field particularly, is a single track pipettor.
Background
A pipette is a device for quantitatively transferring a liquid, and grasps a volume change caused by movement of a movable piston in a cylinder as a volume change of air, and sucks and discharges a volume of liquid of the volume change amount of air into a suction nozzle attached to a lower end portion of the cylinder. A type in which one suction nozzle is attached is called a single-channel pipette, and a type in which a plurality of suction nozzles are attached at the same time is called a multi-channel pipette. A multichannel pipette is generally configured with eight or twelve channels, because a microplate (microplate) most frequently used as a dispensing container is configured with 8 × 12 disks (wells), and a microplate having more than one well is also configured with an integral multiple of 96 wells.
The existing pipettor has a complex structure and is inconvenient to use, and the suction head which is sleeved on the suction nozzle cannot be automatically detached.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an eight pipettors, rational in infrastructure, the design is humanized, can dismantle the suction head that will cup joint on the suction nozzle automatically, convenient to use.
In order to realize the technical purpose, the utility model discloses a technical scheme as follows:
an eight-channel pipette comprising:
the liquid transfer device comprises a shell, eight detachable single-channel liquid transfer devices fixed in the shell, wherein the eight single-channel liquid transfer devices are arranged in the shell side by side, each single-channel liquid transfer device comprises an outer cylinder, an inner cylinder, a measuring cylinder, a piston rod inserted into the measuring cylinder, an inner push rod with the lower end inserted into the outer cylinder, and a suction nozzle fixedly connected to the bottom of the measuring cylinder, the outer cylinder, the inner cylinder and the measuring cylinder are concentric, the inner cylinder is arranged between the outer cylinder and the measuring cylinder, the measuring cylinder is fixedly connected with the outer cylinder, the top of the inner cylinder is higher than the measuring cylinder, extends towards the circle center to form a groove with the top of the measuring cylinder, a spring is arranged in the groove, one end of the spring is fixedly connected with the inner cylinder, the other end of the spring is fixedly connected with the top of the measuring cylinder, when the spring is compressed, the inner cylinder moves, tangent to the suction nozzle; the suction nozzle is positioned outside the outer cylinder and exposed outside the shell; the top of the piston rod extends out of the measuring cylinder, the top of the piston rod is connected with a limiting ring, the top surface of the limiting ring is fixedly connected with the bottom end of the inner push rod, and the top end of the inner push rod extends out of the outer cylinder;
control pipettor main part is absorb and release control mechanism of liquid, including set up at inside connecting the horizontal pole of shell, with be connected horizontal pole fixed connection's outer push rod, drive the drive structure, the control housing that outer push rod reciprocated, connect the horizontal pole with the inner push rod dismantles and connects, the control housing is including the first casing that is located upper portion, the connection casing that is used for connecting first casing and shell, the drive structure is located in the first casing, outer push rod is kept away from connect horizontal pole that one end pass the shell top connect the casing, stretch into in the first casing, with the drive structure links to each other.
Adopt above-mentioned technical scheme's utility model, control the upper and lower slip of outer push rod through the control motor, slide from top to bottom through connecting the horizontal pole and drive eight single-track pipettors's interior push rod simultaneously, and then realize eight single-track pipettors's absorption and release liquid, easy operation, convenience, structural design is reasonable. Meanwhile, the upper and lower sliding of the inner cylinder can be controlled through the motor, and then the suction head on the suction nozzle is withdrawn. And each single-channel pipettor is all dismantled with shell, connection horizontal pole and is connected, can change wantonly, after a certain one goes wrong, need not all abandonment.
Furthermore, the driving structure comprises a motor, a speed reducer and a screw rod, an output shaft of the motor is connected with the speed reducer, an output shaft of the speed reducer is connected with the screw rod, and a nut of the screw rod is connected with the outer push rod.
Furthermore, the top of the outer push rod is downwards provided with a containing groove, the screw rod is inserted into the containing groove, and a nut of the screw rod is fixedly connected with the wall of the containing groove.
Furthermore, guide grooves are formed in two opposite positions of the wall of the outer barrel, two guide blocks are arranged in the positions, opposite to the guide grooves, of the limiting ring, and the guide blocks are inserted into the guide grooves in a sliding mode.
The arrangement of the guide groove and the guide block enables the piston rod to move in the vertical direction.
Furthermore, two opposite walls of the inner cylinder are provided with strip-shaped holes, the length direction of each strip-shaped hole is consistent with the movement direction of the piston rod, the length of each strip-shaped hole is larger than or equal to the maximum travel distance of the downward movement of the inner cylinder, a connecting support rod is fixedly connected to the position, opposite to the strip-shaped holes, on the measuring cylinder, and one end, far away from the measuring cylinder, of the connecting support rod penetrates through the strip-shaped holes and is fixedly connected with the outer cylinder wall.
The arrangement of the strip-shaped holes and the connecting support rods ensures that the inner cylinder slides up and down and the positions of the outer cylinder and the measuring cylinder are kept unchanged.
Drawings
The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;
FIG. 1 is a schematic structural view of the present invention when not in use;
FIG. 2 is a schematic view of the liquid sucking device according to the present invention;
FIG. 3 is a schematic view of the structure of the utility model when the suction head is removed;
fig. 4 is an enlarged view of the single-channel pipette of fig. 1;
fig. 5 is an enlarged view of the single-channel pipette of fig. 2;
fig. 6 is an enlarged view of the single-channel pipette of fig. 3;
the main element symbols are as follows:
the pipette comprises a shell 1, a fixing sleeve 11, an opening 111, a single-channel pipette 2, an outer cylinder 21, a guide groove 211, an inner cylinder 22, a strip-shaped hole 221, a measuring cylinder 23, a groove 231, a spring 232, a connecting support rod 233, a piston rod 24, a limiting ring 241, a guide block 242, an inner push rod 25, a suction nozzle 26, a connecting cross rod 3, an outer push rod 4, a containing groove 41, a driving motor 51, a speed reducer 52, a screw rod 53, a connecting shell 6, a first shell 7 and a battery 8.
Detailed Description
In order to make the present invention better understood by those skilled in the art, the technical solutions of the present invention are further described below with reference to the accompanying drawings and examples.
As shown in fig. 1 to 6, an eight-channel pipette includes a pipette body and a control mechanism for controlling the pipette body to suck and release liquid.
Wherein, the pipettor main part includes the shell, eight single-channel pipettors of the fixed shell of dismantlement, eight single-channel set up side by side in the shell, each single-channel pipettor all includes the urceolus, the inner tube, the graduated flask, insert the piston rod in the graduated flask, the lower tip inserts the interior push rod in the urceolus, fixed connection is at the suction nozzle of graduated flask bottom, the urceolus, the inner tube, the graduated flask is concentric, and the inner tube sets up between urceolus and graduated flask, graduated flask and urceolus fixed connection, as shown in fig. 1 and 4, when not receiving external force, the urceolus, the inner tube, the bottom of graduated flask flushes, and also flushes. The top of inner tube exceeds the graduated flask to the centre of a circle extends and forms the recess with the top of graduated flask, is provided with the spring in the recess, the one end and the inner tube fixed connection of spring, the other end and the top fixed connection of graduated flask, when the spring compression, the inner tube downstream, the urceolus is stretched out to its bottom, and extends the shell, and is tangent with the suction nozzle, will cup joint the suction nozzle on the suction nozzle and withdraw, the function of automatic completion removal suction nozzle. As shown in fig. 1, the suction nozzle is positioned outside the outer cylinder and exposed outside the shell; the measuring cylinder is stretched out at the top of piston rod, and its top is connected with the spacing ring, and the top surface of spacing ring and the bottom fixed connection of interior push rod, the urceolus is extended out at the top of interior push rod, and interior push rod downstream drives the piston rod downstream, and when the top surface butt of spacing ring and inner tube, the spacing ring area inner tube together downstream.
In a preferred embodiment, two opposite positions of the wall of the outer cylinder are both provided with guide grooves, two guide blocks are arranged at opposite positions of the limiting ring and the guide grooves, and the guide blocks are inserted into the guide grooves in a sliding manner.
The guide groove and the guide block ensure that the push rod moves in the vertical direction, and then the piston rod is embraced to move in the vertical direction.
In a preferred embodiment, two opposite walls of the inner cylinder are provided with strip-shaped holes, the length direction of each strip-shaped hole is consistent with the movement direction of the piston rod, the length of each strip-shaped hole is larger than or equal to the maximum travel distance of the downward movement of the inner cylinder, a connecting support rod is fixedly connected to the position, opposite to the strip-shaped holes, of the measuring cylinder, and the end, far away from the measuring cylinder, of the connecting support rod penetrates through the strip-shaped holes to be fixedly connected with the outer cylinder wall.
The arrangement of the strip-shaped holes and the connecting support rods enables the inner cylinder to slide up and down under the condition that the outer cylinder and the measuring cylinder are not affected.
Wherein, control mechanism is including setting up the connection horizontal pole inside the shell, with the outer push rod of connecting horizontal pole fixed connection, the drive structure that the outer push rod of drive reciprocated, control housing, it is connected with the dismantlement of inner push rod to connect the horizontal pole, control housing is including the first casing that is located upper portion, the connection casing that is used for connecting first casing and shell, drive structure is located first casing, the outer push rod is kept away from that one end of connecting the horizontal pole and is passed the shell top, connect the casing, stretch into first casing, link to each other with drive structure.
In a preferred embodiment, the driving structure comprises a motor, a speed reducer and a screw rod, wherein an output shaft of the motor is connected with the speed reducer, an output shaft of the speed reducer is connected with the screw rod, and a nut of the screw rod is connected with the outer push rod.
In the preferred embodiment, the holding tank has been seted up downwards at the top of outer push rod, and during the lead screw inserted the holding tank, the nut of lead screw and the wall fixed connection of holding tank.
In the preferred embodiment, be provided with the fixed sleeve of plastic on the shell, be convenient for change single-channel pipettor, seted up the opening on the fixed sleeve. When the connecting cross rod moves upwards, the fixing sleeve can ensure that the outer barrel does not move upwards along with the connecting cross rod.
In a preferred embodiment, the outer push rod is fixed in the middle of the connecting cross rod for uniform force application; in order to further limit the sliding track of the outer push rod, guide grooves can be formed in the two side faces of the shell, guide blocks are fixed to the two ends of the outer push rod, and the guide blocks are matched with the guide grooves.
In a preferred embodiment, the connecting cross rod is detachably connected with the inner push rod through threads.
In a preferred embodiment, the motor and the power supply battery of the reduction gear are disposed in the first housing.
When the liquid measuring cylinder is used, the motor is started, the outer push rod moves upwards, the piston rod further moves upwards, liquid is sucked into the measuring cylinder through the suction nozzle, the change process is shown in the figures 1 to 2, and after the liquid is sucked, the motor is stopped; then the motor is started again, so that the outer push rod moves downwards, and further the piston rod moves downwards, and the liquid in the measuring cylinder is discharged from the suction nozzle, and the change process is shown in the figure 2 to the figure 1; when the limiting ring slides to be in contact with the top surface of the inner cylinder, a downward force is continuously applied, the limiting ring can drive the inner cylinder to move downwards together, the lower end part of the inner cylinder extends out of the lower end part of the outer cylinder and is in contact with the suction nozzle, the suction nozzle is pushed down from the suction nozzle, and the automatic suction nozzle removal is completed, wherein the change process is shown in a graph from 1 to 3; at this time, the motor is started again, and the inner cylinder is restored to the original position, and the change process is shown in fig. 3 to fig. 1. In the whole movement process, the measuring cylinder and the outer cylinder are fixedly connected, the positions of the measuring cylinder and the outer cylinder are kept unchanged, and the inner cylinder slides up and down to complete the function of automatically removing the suction head. The whole device is reasonable in structure and convenient to operate.
The above is to the utility model provides an eight way pipettors have been introduced in detail. The description of the specific embodiments is only intended to facilitate an understanding of the method of the invention and its core ideas. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (5)
1. An eight-channel pipette, comprising:
the liquid transfer device comprises a shell, eight detachable single-channel liquid transfer devices fixed in the shell, wherein the eight single-channel liquid transfer devices are arranged in the shell side by side, each single-channel liquid transfer device comprises an outer cylinder, an inner cylinder, a measuring cylinder, a piston rod inserted into the measuring cylinder, an inner push rod with the lower end inserted into the outer cylinder, and a suction nozzle fixedly connected to the bottom of the measuring cylinder, the outer cylinder, the inner cylinder and the measuring cylinder are concentric, the inner cylinder is arranged between the outer cylinder and the measuring cylinder, the measuring cylinder is fixedly connected with the outer cylinder, the top of the inner cylinder is higher than the measuring cylinder, extends towards the circle center to form a groove with the top of the measuring cylinder, a spring is arranged in the groove, one end of the spring is fixedly connected with the inner cylinder, the other end of the spring is fixedly connected with the top of the measuring cylinder, when the spring is compressed, the inner cylinder moves, tangent to the suction nozzle; the suction nozzle is positioned outside the outer cylinder and exposed outside the shell; the top of the piston rod extends out of the measuring cylinder, the top of the piston rod is connected with a limiting ring, the top surface of the limiting ring is fixedly connected with the bottom end of the inner push rod, and the top end of the inner push rod extends out of the outer cylinder;
control pipettor main part is absorb and release control mechanism of liquid, including set up at inside connecting the horizontal pole of shell, with be connected horizontal pole fixed connection's outer push rod, drive the drive structure, the control housing that outer push rod reciprocated, connect the horizontal pole with the inner push rod dismantles and connects, the control housing is including the first casing that is located upper portion, the connection casing that is used for connecting first casing and shell, the drive structure is located in the first casing, outer push rod is kept away from connect horizontal pole that one end pass the shell top connect the casing, stretch into in the first casing, with the drive structure links to each other.
2. The eight-channel pipette according to claim 1, wherein the driving structure comprises a motor, a speed reducer and a screw rod, an output shaft of the motor is connected with the speed reducer, an output shaft of the speed reducer is connected with the screw rod, and a nut of the screw rod is connected with the outer push rod.
3. The eight-channel pipette according to claim 2, wherein a receiving groove is formed downward at the top of the external push rod, the screw rod is inserted into the receiving groove, and a nut of the screw rod is fixedly connected with a wall of the receiving groove.
4. The eight-channel pipette according to claim 1, wherein two guide grooves are formed in two positions opposite to the wall of the outer barrel, two guide blocks are arranged in positions of the limiting ring opposite to the guide grooves, and the guide blocks are slidably inserted into the guide grooves.
5. The eight-channel pipette according to claim 1, wherein two opposite walls of the inner cylinder are provided with strip-shaped holes, the length direction of each strip-shaped hole is consistent with the movement direction of the piston rod, the length of each strip-shaped hole is greater than or equal to the maximum stroke distance of the downward movement of the inner cylinder, a connecting support rod is fixedly connected to the position, opposite to the strip-shaped holes, of the measuring cylinder, and the end, far away from the measuring cylinder, of the connecting support rod penetrates through the strip-shaped holes and is fixedly connected with the outer cylinder wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920193349.XU CN209885842U (en) | 2019-02-12 | 2019-02-12 | Eight-channel pipettor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920193349.XU CN209885842U (en) | 2019-02-12 | 2019-02-12 | Eight-channel pipettor |
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| Publication Number | Publication Date |
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| CN209885842U true CN209885842U (en) | 2020-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920193349.XU Active CN209885842U (en) | 2019-02-12 | 2019-02-12 | Eight-channel pipettor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111389476A (en) * | 2020-01-04 | 2020-07-10 | 北京罗特思创科技有限公司 | Multi-channel plunger pump and using method thereof |
| CN114108105A (en) * | 2021-11-04 | 2022-03-01 | 杭州奥盛仪器有限公司 | Full-automatic NGS library construction system |
-
2019
- 2019-02-12 CN CN201920193349.XU patent/CN209885842U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111389476A (en) * | 2020-01-04 | 2020-07-10 | 北京罗特思创科技有限公司 | Multi-channel plunger pump and using method thereof |
| CN114108105A (en) * | 2021-11-04 | 2022-03-01 | 杭州奥盛仪器有限公司 | Full-automatic NGS library construction system |
| CN114108105B (en) * | 2021-11-04 | 2023-08-25 | 杭州奥盛仪器有限公司 | Full-automatic NGS library construction system |
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