CN218962676U

CN218962676U - Trace liquid pipette

Info

Publication number: CN218962676U
Application number: CN202223502924.0U
Authority: CN
Inventors: 姜昕; 赵德志; 付国龙; 郭云涛; 朱云; 唐帅男
Original assignee: Zhongke Gene Biotechnology Jiangsu Co ltd
Current assignee: Zhongke Gene Biotechnology Jiangsu Co ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-05-05
Anticipated expiration: 2032-12-27

Abstract

The utility model discloses a micro-liquid pipette, which relates to the technical field of pipettors and comprises a pipette shell and a placing seat; a machine shell: the liquid suction pipe is arranged on the bottom surface, a piston rod is connected to the inside of the liquid suction pipe in a sliding manner, an electric push rod is arranged on the top surface of the device shell, two placing seats are respectively fixed on the left side surface and the right side surface of the inside of the device shell, springs are fixed in the placing seats, the top ends of the springs are connected with one side of the bottom surface of a fixing plate, the fixing plate is fixed on the outer side of the piston rod, a limiting rod which is connected with a limiting hole on the surface of the fixing plate in a sliding manner is arranged on the bottom surface of the inside of the placing seat, an adjusting unit is arranged in the inside of the device shell, and a limiting unit is arranged on the side surface of the fixing plate; wherein: the automatic quantitative liquid transfer device is characterized by further comprising a controller, wherein the controller is arranged on the front side surface of the device shell, the input end of the electric push rod is electrically connected with the output end of the controller, and the automatic quantitative liquid transfer device is convenient to adjust, accurate in quantification and high in practicability.

Description

Trace liquid pipette

Technical Field

The utility model relates to the technical field of pipettors, in particular to a micro-liquid pipettor.

Background

A pipette, also called a pipette gun, is an instrument for quantitatively transferring liquid. In the case of analytical testing, a pipette is generally used to remove small or minute amounts of liquid. The liquid transfer device can be divided into a gas piston type liquid transfer device and an external piston type liquid transfer device according to the principle, most of the current liquid transfer devices adopt manual adjustment, liquid is absorbed by pressing a piston rod, but the position where the piston rod is not pressed in place easily occurs in manual operation, so that the liquid transfer amount easily deviates, and therefore, a trace liquid transfer device is proposed.

Disclosure of Invention

The utility model aims to overcome the existing defects, provides the micro liquid pipette, is convenient to adjust, accurate in quantification and high in practicability, and can effectively solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a micro liquid pipette, which comprises a casing and a placing seat;

a machine shell: the liquid suction pipe is arranged on the bottom surface, a piston rod is connected to the inside of the liquid suction pipe in a sliding manner, an electric push rod is arranged on the top surface of the device shell, two placing seats are respectively fixed on the left side surface and the right side surface of the inside of the device shell, springs are fixed in the placing seats, the top ends of the springs are connected with one side of the bottom surface of a fixing plate, the fixing plate is fixed on the outer side of the piston rod, a limiting rod which is connected with a limiting hole on the surface of the fixing plate in a sliding manner is arranged on the bottom surface of the inside of the placing seat, an adjusting unit is arranged in the inside of the device shell, and a limiting unit is arranged on the side surface of the fixing plate;

wherein: the electric power device further comprises a controller, the controller is arranged on the front side face of the device shell, the input end of the electric push rod is electrically connected with the output end of the controller, and the input end of the controller is electrically connected with the output end of an external power supply.

And the electric push rod is started to mobilize the piston rod to move downwards to discharge air in the liquid suction pipe, and then the spring rebounds to enable the piston rod to move upwards after the electric push rod returns to the original position, so that liquid is sucked into the suction head, and the liquid suction treatment is facilitated.

Further, the regulating unit contains motor, backup pad, alignment jig and screw rod, the backup pad has two and controls the top of corresponding fixing in the ware shell inside, the top surface of backup pad is equipped with the motor, the bottom of motor output shaft is connected with the top of screw rod, the screw and the screw rod threaded connection of alignment jig side, the logical groove in alignment jig middle part and the top looks joint of piston rod, the output of the input electricity connection director of motor, the starter motor drives the screw rod and rotates to adjust the height of alignment jig, thereby adjust the height of piston rod according to the pipetting demand of difference, and then adjust the volume of absorbing of liquid, thereby improve the practicality of device.

Further, spacing unit contains connecting rod, contact, pressure sensor and warning light, the connecting rod has two and fixes the front and back both sides face at the fixed plate respectively, the bottom mounting of connecting rod has the contact, pressure sensor has two and installs the front and back both sides face in the ware shell is inside respectively, the top at the ware shell left surface is fixed to the warning light, the input of controller is connected to pressure sensor's output electricity, the output of controller is connected to the input electricity of warning light, the contact pushes down and pressure sensor contacts, and the warning light lights in the time of the contact, can judge like this that the piston rod is in place to prevent that the piston rod from removing not in place and causing follow-up liquid to move the liquid measure to appear the deviation.

Further, the liquid suction device further comprises two sliding carriages and a stripping frame, wherein the sliding carriages are respectively connected with two ends of the outer side face of the device shell in a sliding mode, the bottoms of the two sliding carriages are respectively connected with the outer side face of the stripping frame, the stripping frame is sleeved on the outer side of the liquid suction pipe, the sliding carriages enable the stripping frame to be pressed down, and accordingly the suction head on the outer side of the liquid suction pipe is taken down.

Further, still include rubber pad and adhesive linkage, the medial surface of rubber pad is equipped with the adhesive linkage, the adhesive linkage bonds with the side of ware shell, bonds the rubber pad in the side of ware shell through the adhesive linkage to stability when increasing personnel and holding.

Further, the portable electronic device further comprises a display screen, the display screen is fixed at the bottom of the front side face of the device shell, the input end of the display screen is electrically connected with the output end of the controller, and the display screen can display data of the electronic device, so that the portable electronic device is convenient for people to adjust.

Compared with the prior art, the utility model has the beneficial effects that: the micro liquid pipette has the following advantages:

1. the piston rod is controlled to be pressed downwards and lifted through the electric push rod and the spring, so that liquid is sucked and discharged, pipetting is convenient, the stability of the piston rod during movement can be improved through the arrangement of the limiting rod, and the air tightness of the piston rod is prevented from being influenced by the inclination of the piston rod.

2. Can adjust the alignment jig from top to bottom through the starter motor, can control the lifting height of piston rod like this to control the how much of absorbing liquid, thereby improve the practicality of device.

3. The piston rod pressing position can be limited through the cooperation of the contact head and the pressure sensor, so that the phenomenon that the quantity of liquid sucked easily deviates due to the fact that the piston rod is not moved in place is avoided, and an alarm lamp is turned on to remind personnel when the piston rod is in place.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of a regulating unit according to the present utility model;

fig. 3 is a schematic view of a partial enlarged structure of the present utility model at a.

In the figure: 1 ware shell, 2 adjusting unit, 21 motor, 22 backup pad, 23 alignment jig, 24 screw rods, 3 spacing unit, 31 connecting rod, 32 contact, 33 pressure sensor, 34 alarm lamp, 4 pipettes, 5 piston rods, 6 electric putter, 7 placing seat, 8 springs, 9 fixed plates, 10 gag lever post, 11 balladeur train, 12 take off work or material rest, 13 rubber pads, 14 adhesive linkage, 15 display screen, 16 controllers.

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.

Referring to fig. 1-3, the present embodiment provides a technical solution: a micro liquid pipette, which comprises a casing 1 and a placing seat 7;

the device shell 1: the liquid suction pipe 4 is arranged on the bottom surface, the piston rod 5 is connected in the liquid suction pipe 4 in a sliding way, the electric push rod 6 is arranged on the top surface of the machine shell 1, two placing seats 7 are respectively fixed on the left side surface and the right side surface of the interior of the machine shell 1, springs 8 are fixed in the placing seats 7, the top ends of the springs 8 are connected with one side of the bottom surface of a fixing plate 9, the fixing plate 9 is fixed on the outer side of the piston rod 5, a limiting rod 10 which is connected with a limiting hole on the surface of the fixing plate 9 in a sliding way is arranged on the bottom surface of the interior of the placing seats 7, the piston rod 5 is started to move downwards to discharge air in the liquid suction pipe 4, then the springs 8 rebound after the electric push rod 6 is reset to enable the piston rod 5 to move upwards, so that liquid is sucked into the suction head, thereby facilitating the liquid suction treatment, an adjusting unit 2 is arranged in the machine shell 1, the adjusting unit 2 comprises a motor 21, a supporting plate 22, an adjusting frame 23 and a screw 24, the supporting plate 22 is provided with two supporting plates and is correspondingly fixed at the top end inside the device shell 1 left and right, the top surface of the supporting plate 22 is provided with a motor 21, the bottom end of an output shaft of the motor 21 is connected with the top end of a screw 24, a screw hole on the side surface of an adjusting frame 23 is in threaded connection with the screw 24, a through groove in the middle of the adjusting frame 23 is clamped with the top end of a piston rod 5, the input end of the motor 21 is electrically connected with the output end of a controller 16, the motor 21 is started to drive the screw 24 to rotate, so that the height of the adjusting frame 23 is adjusted, the height of the piston rod 5 is adjusted according to different pipetting demands, the liquid suction amount is adjusted, the practicability of the device is improved, the side surface of the fixing plate 9 is provided with a limiting unit 3, the limiting unit 3 comprises a connecting rod 31, a contact head 32, a pressure sensor 33 and an alarm lamp 34, the connecting rod 31 is provided with two and is respectively fixed at the front side surface and the rear side surface of the fixing plate 9, the bottom end of the connecting rod 31 is fixedly provided with a contact head 32, the pressure sensors 33 are provided with two front and rear side surfaces which are respectively arranged in the device shell 1, the alarm lamp 34 is fixed at the top end of the left side surface of the device shell 1, the output end of the pressure sensors 33 is electrically connected with the input end of the controller 16, the input end of the alarm lamp 34 is electrically connected with the output end of the controller 16, the contact head 32 is pressed down to be in contact with the pressure sensors 33, and the alarm lamp 34 is lightened when the contact is carried out, so that whether the piston rod 5 is in place can be judged, and the follow-up liquid displacement amount deviation caused by the fact that the piston rod 5 is not moved in place can be prevented;

wherein: the intelligent electric pipette further comprises a controller 16, the controller 16 is arranged on the front side face of the pipette 1, the input end of the electric putter 6 is electrically connected with the output end of the controller 16, the input end of the controller 16 is electrically connected with the output end of an external power supply, the intelligent electric pipette further comprises two carriages 11 and a stripping frame 12, the carriages 11 are respectively and slidably connected with two ends of the outer side face of the pipette 1, the bottoms of the two carriages 11 are respectively connected with the outer side face of the stripping frame 12, the stripping frame 12 is sleeved on the outer side of the pipette 4, the sliding carriages 11 enable the stripping frame 12 to be pressed down, the pipette 4 is taken down, the intelligent electric pipette further comprises a rubber pad 13 and an adhesive layer 14, the inner side face of the rubber pad 13 is provided with the adhesive layer 14, the adhesive layer 14 is adhered with the side face of the pipette 1, the rubber pad 13 is adhered to the side face of the pipette 1 through the adhesive layer 14, so that stability of a person holding is improved, the intelligent electric pipette is further comprises a display 15, the display 15 is fixed at the bottom end of the front side face of the pipette 1, the input end of the display 15 is electrically connected with the output end of the controller 16, and the display 15 can display data of an electric device, so that the person can conveniently adjust.

The working principle of the micro liquid pipette provided by the utility model is as follows: firstly, the suction head is mounted at the bottom end of the liquid suction pipe 4, the motor 21 is started to drive the screw 24 to rotate according to different use conditions, so that the height of the adjusting frame 23 is adjusted, a through groove in the middle of the adjusting frame 23 is clamped at the top end of the piston rod 5 and matched with the spring 8 to adjust the piston rod 5, then the electric push rod 6 is started to push down the piston rod 5, so that gas in the liquid suction pipe 4 is discharged, the contact head 32 is simultaneously pushed down to be in contact with the pressure sensor 33, the alarm lamp 34 is lightened when the contact head is contacted, so that whether the piston rod 5 is in place can be judged, the piston rod 5 is prevented from moving in place to cause deviation of liquid displacement of subsequent liquid, then the electric push rod 6 moves upwards slowly and is matched with the spring 8 to suck the liquid into the suction head, so that liquid is convenient to be subjected to liquid displacement treatment, the display screen 15 on the front side of the machine shell 1 can display data of an electric device, so that personnel can conveniently adjust, and the sliding carriage 11 is pushed down the material taking-off frame 12 after the liquid displacement is finished, so that the suction head on the outer side of the liquid suction pipe 4 is taken down.

It should be noted that, in the above embodiment, the controller 16 is selected from the models S7-200, the motor 21 can be freely configured according to the practical application scenario, the micro motor with the model RS-550S is recommended, the pressure sensor 33 is selected from the models JC-1000-HSM, and the alarm lamp 34 is selected from the models DWS 301A. The controller 16 controls the operation of the motor 21, the pressure sensor 33, the warning light 34, the electric putter 6 and the display 15 using methods commonly used in the art.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. Micro liquid pipettor, its characterized in that: comprises a container shell (1) and a placement seat (7);

device shell (1): the liquid suction pipe (4) is installed on the bottom surface, a piston rod (5) is connected inside the liquid suction pipe (4) in a sliding mode, an electric push rod (6) is installed on the top surface of the device shell (1), two placing seats (7) are respectively fixed on the left side surface and the right side surface inside the device shell (1), springs (8) are fixed inside the placing seats (7), the top ends of the springs (8) are connected with one side of the bottom surface of a fixing plate (9), the fixing plate (9) is fixed on the outer side of the piston rod (5), a limiting rod (10) which is connected with a limiting hole on the surface of the fixing plate (9) in a sliding mode is arranged on the bottom surface inside the placing seats (7), an adjusting unit (2) is arranged inside the device shell (1), and a limiting unit (3) is arranged on the side surface of the fixing plate (9).

Wherein: the electric power device further comprises a controller (16), wherein the controller (16) is arranged on the front side face of the device shell (1), the input end of the electric push rod (6) is electrically connected with the output end of the controller (16), and the input end of the controller (16) is electrically connected with the output end of an external power supply.

2. The micropipette of claim 1 wherein: the utility model discloses a motor, including adjusting unit (2), including motor (21), backup pad (22), alignment jig (23) and screw rod (24), backup pad (22) have two and control the top of corresponding fixing in ware shell (1), the top surface of backup pad (22) is equipped with motor (21), the bottom and the top of screw rod (24) of motor (21) output shaft are connected, screw and screw rod (24) threaded connection of alignment jig (23) side, the logical groove at alignment jig (23) middle part and the top looks joint of piston rod (5), the output of controller (16) is connected to the input electricity of motor (21).

3. The micropipette of claim 1 wherein: spacing unit (3) contain connecting rod (31), contact head (32), pressure sensor (33) and warning light (34), connecting rod (31) have two and fix respectively in the front and back both sides face of fixed plate (9), the bottom mounting of connecting rod (31) has contact head (32), pressure sensor (33) have two and install respectively in the inside front and back both sides face of ware shell (1), the top at ware shell (1) left surface is fixed in warning light (34), the input of controller (16) is connected to the output electricity of pressure sensor (33), the output of controller (16) is connected to the input electricity of warning light (34).

4. The micropipette of claim 1 wherein: the liquid suction device is characterized by further comprising two sliding carriages (11) and a stripping frame (12), wherein the sliding carriages (11) are respectively connected with two ends of the outer side face of the device shell (1) in a sliding manner, the bottom ends of the two sliding carriages (11) are respectively connected with the outer side face of the stripping frame (12), and the stripping frame (12) is sleeved on the outer side of the liquid suction tube (4).

5. The micropipette of claim 1 wherein: the novel rubber hose further comprises a rubber gasket (13) and an adhesive layer (14), wherein the adhesive layer (14) is arranged on the inner side surface of the rubber gasket (13), and the adhesive layer (14) is adhered to the side surface of the hose shell (1).

6. The micropipette of claim 1 wherein: the display device is characterized by further comprising a display screen (15), wherein the display screen (15) is fixed at the bottom end of the front side surface of the device shell (1), and the input end of the display screen (15) is electrically connected with the output end of the controller (16).