CN220940802U

CN220940802U - Experimental pipettor

Info

Publication number: CN220940802U
Application number: CN202320929315.9U
Authority: CN
Inventors: 宁黎冉
Original assignee: Wuhan University WHU
Current assignee: Wuhan University WHU
Priority date: 2023-04-23
Filing date: 2023-04-23
Publication date: 2024-05-14
Anticipated expiration: 2033-04-23

Abstract

The utility model discloses an experimental pipettor, which comprises a base, a stand column, a lifting and rotating device, a cross arm, a translation device, a sliding block, the pipettor, an electric push rod and a clamping limiting device, wherein the stand column is rotationally arranged on the base, the lifting and rotating device is arranged in the base and on the stand column, the cross arm is arranged on the lifting and rotating device, the translation device is arranged in the cross arm, the sliding block is slidingly arranged on the cross arm and is in power connection with the translation device, the pipettor is arranged in the sliding block, the electric push rod is arranged on the pipettor, and the clamping limiting device is arranged in the sliding block and can clamp and fix the pipettor. The utility model belongs to the technical field of pipettors, and particularly relates to an experimental pipettor capable of limiting and fixing the pipettor and simultaneously performing a distance adjusting function on the horizontal position of the pipettor.

Description

Experimental pipettor

Technical Field

The utility model belongs to the technical field of pipettors, and particularly relates to an experimental pipettor.

Background

Pipettes are very popular in laboratories, can quantitatively draw liquid, and are very accurate, for example, publication (bulletin) numbers: CN207856943U, just disclose a laboratory and use the pipettor, the utility model drives the worm to rotate through the positive rotation of the second motor, the worm drives the gear to move, the gear drives the clamp lever to move, the clamp lever drives the body to move, make the body enter the cup automatically, suck out and release, can not cause the error of the volume to draw the liquid because of human body temperature or hand shake while sucking, the utility model is turned off slowly through the first motor, manual control, make in the course of moving the liquid, have avoided the hand slip of the body to drop, has improved the efficiency of pipetting, however have the disadvantage: when the clamping rod clamps the pipettor, certain limiting and fixing measures are lacked, when the pipettor is operated to suck and release liquid, the pipettor possibly falls off due to too strong force, the length of the clamping rod is fixed, the position for releasing the liquid after the pipettor is rotated is fixed, and certain application limitation exists, so that improvement is needed.

Disclosure of utility model

In order to solve the problems, the utility model provides the experimental pipettor which can limit and fix the pipettor and can perform the function of adjusting the horizontal position of the pipettor in a far-near mode.

In order to realize the functions, the technical scheme adopted by the utility model is as follows: the utility model provides a pipettor for experiments, includes base, stand, lift slewer, xarm, translation device, slider, pipettor, electric putter and centre gripping stop device, the stand rotates and locates on the base, lift slewer locates in the base and locates on the stand, the xarm is located on the lift slewer, translation device locates in the xarm, the slider slides and locates on the xarm and be connected with translation device power, the pipettor is located in the slider, electric putter locates on the pipettor, centre gripping stop device locates in the slider and can carry out centre gripping fixed to the pipettor; the clamping limiting device comprises a first fixing plate, a second fixing plate, a pushing rod, a first spring, a limiting seat, an inserting rod, a second spring and a wire cylinder, wherein the first fixing plate and the second fixing plate are arranged in the sliding block, the pushing rod is slidably arranged in the first fixing plate, the first spring is sleeved on the pushing rod, one end of the first spring is arranged on the first fixing plate, the other end of the first spring is arranged on the pushing rod, the limiting seat is arranged on the outer wall of the liquid transfer device, the inserting rod penetrates through the second fixing plate, the second spring is sleeved on the inserting rod, one end of the second spring is arranged on the second fixing plate, the other end of the second spring is arranged on the inserting rod, the wire cylinder is in threaded connection with the sliding block and can push the pushing rod, the pushing rod is pushed through the wire cylinder, and the inserting rod can be inserted between the limiting seats, so that the fixing of the liquid transfer device can be realized.

Further, the lifting and rotating device comprises a first motor, a first gear, a second motor and a first screw rod, wherein the first motor is arranged in the base, the first gear is arranged at the power output end of the first motor, the second gear is arranged at the lower end of the upright post and is in meshed connection with the first gear, the second motor is arranged at the top end of the upright post, the first screw rod is arranged at the power output end of the second motor and is in threaded connection with the cross arm, the rotation of the cross arm can be realized through the first gear, so that the liquid transfer device can be rotated, the first screw rod drives the cross arm to lift, so that the lifting of the liquid transfer device can be realized, and the liquid suction and release actions can be completed.

Further, the translation device comprises a motor III and a screw rod II, the motor III is arranged on the cross arm, the screw rod II is arranged at the power output end of the motor III and is in threaded connection with the sliding block, the position of the liquid suction and release of the liquid transfer device can be adjusted through the translation device, and the application is wider.

Preferably, a slot is formed in the upright post, and the cross arm is slidably arranged in the slot.

Preferably, a vacuum type sucking disc is arranged at the bottom of the base.

Preferably, the first spring always has a force for pulling the pushing rod towards the wire cylinder, and the second spring initial state can meet the condition that the inserting rod cannot be inserted between the limiting seats.

Preferably, the contact surface of the pushing rod and the inserted rod is in a wedge-shaped surface.

Preferably, the first motor, the second motor and the third motor are all forward and reverse motors.

The utility model adopts the structure to obtain the beneficial effects as follows: according to the experimental pipettor, the clamping and fixing of the pipettor can be realized through the clamping limiting device, the situation that the pipettor falls off in the process of pipetting or releasing is avoided, the automatic pipetting and draining of the pipettor can be realized through the electric push rod, the lifting and draining actions and the rotating directions of the pipettor can be realized through the lifting and rotating device, so that the pipetting and draining actions and the rotating directions of the pipettor are realized, and the horizontal position of the pipettor can be adjusted through the translation device.

Drawings

FIG. 1 is a schematic view showing the overall structure of an experimental pipette of the present utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a top view of the cross arm and slider of FIG. 1;

Fig. 4 is a side view of the column of fig. 1.

The device comprises a base, a column, a lifting and rotating device, a cross arm, a 5, a sliding block, a 6, a translation device, a 7, a liquid transferring device, an 8, an electric push rod, a 9, a clamping limiting device, a 10, a first fixing plate, a 11, a second fixing plate, a 12, a pushing rod, a 13, a first spring, a 14, a limiting seat, a 15, a plug rod, a 16, a second spring, a 17, a wire barrel, a 18, a first motor, a 19, a first gear, a20, a second gear, a 21, a second motor, a 22, a first screw, a 23, a third motor, a 24, a second screw, a 25, a slot, a 26 and a sucker.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. 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 "center", "upper", "lower", "left", "right", "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," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The present utility model will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-4, the experimental pipettor comprises a base 1, a stand column 2, a lifting and rotating device 3, a cross arm 4, a translation device 6, a sliding block 5, a pipettor 7, an electric push rod 8 and a clamping limiting device 9, wherein the stand column 2 is rotationally arranged on the base 1, the lifting and rotating device 3 is arranged in the base 1 and on the stand column 2, the cross arm 4 is arranged on the lifting and rotating device 3, the translation device 6 is arranged in the cross arm 4, the sliding block 5 is slidingly arranged on the cross arm 4 and is in power connection with the translation device 6, the pipettor 7 is arranged in the sliding block 5, the electric push rod 8 is arranged on the pipettor 7, and the clamping limiting device 9 is arranged in the sliding block 5 and can clamp and fix the pipettor 7; the clamping limiting device 9 comprises a first fixing plate 10, a second fixing plate 11, a pushing rod 12, a first spring 13, a limiting seat 14, an inserting rod 15, a second spring 16 and a wire barrel 17, wherein the first fixing plate 10 and the second fixing plate 11 are arranged in the sliding block 5, the pushing rod 12 is slidably arranged in the first fixing plate 10, the first spring 13 is sleeved on the pushing rod 12, one end of the first spring 13 is arranged on the first fixing plate 10, the other end of the first spring is arranged on the pushing rod 12, the limiting seat 14 is arranged on the outer wall of the liquid shifter 7, the inserting rod 15 penetrates through the second fixing plate 11, the second spring 16 is sleeved on the inserting rod 15, one end of the second spring 16 is arranged on the second fixing plate 11, the other end of the second spring is arranged on the inserting rod 15, the wire barrel 17 is in threaded connection with the sliding block 5 and can push the pushing rod 12, the pushing rod 12 is extruded through the wire barrel 17, the pushing rod 15 is extruded, the inserting rod 15 can be inserted between the limiting seats 14, and accordingly fixing of the liquid shifter 7 can be achieved.

The lifting and rotating device 3 comprises a first motor 18, a first gear 19, a second gear 20, a second motor 21 and a first screw rod 22, wherein the first motor 18 is arranged in the base 1, the first gear 19 is arranged at the power output end of the first motor 18, the second gear 20 is arranged at the lower end of the upright post 2 and is in meshed connection with the first gear 19, the second motor 21 is arranged at the top end of the upright post 2, the first screw rod 22 is arranged at the power output end of the second motor 21 and is in threaded connection with the cross arm 4, the first gear 19 is meshed with the second gear 20, so that the cross arm 4 can be rotated, the first screw rod 22 drives the cross arm 4 to lift, and the lifting and the lowering of the liquid transfer device 7 can be realized, so that the liquid suction and release actions can be completed.

The translation device 6 comprises a motor III 23 and a screw rod II 24, the motor III 23 is arranged on the cross arm 4, the screw rod II 24 is arranged at the power output end of the motor III 23 and is in threaded connection with the sliding block 5, and the position of the liquid suction and release of the liquid transfer device 7 can be adjusted through the translation device 6, so that the application is wider.

The upright post 2 is provided with a slot 25, and the cross arm 4 is slidably arranged in the slot 25.

The bottom of the base 1 is provided with a vacuum sucker 26.

The first spring 13 always has a force for pulling the push rod 12 towards the wire cylinder 17, and the initial state of the second spring 16 can meet the condition that the inserting rod 15 cannot be inserted between the limiting seats 14.

The contact surface of the pushing rod 12 and the inserting rod 15 is in a wedge-shaped surface.

The motor I18, the motor II 21 and the motor III 23 are all forward and reverse motors.

When the liquid suction device is specifically used, firstly, the liquid suction device 7 is placed in the sliding block 5, then the silk cylinder 17 is rotated, the silk cylinder 17 extrudes the extruding rod 12, the extruding rod 12 extrudes the inserting rod 15, the inserting rod 15 slides in the fixed plate II 11 until the inserting rod is inserted between the limiting seats 14, limiting fixation of the liquid suction device 7 is completed, firstly, the motor II 21 is started, the screw rod II 22 rotates, the cross arm 4 slides in the groove 25 under the driving of the screw rod II 22, the liquid suction device 7 is inserted into a container needing liquid suction, the piston rod of the liquid suction device 7 is driven by the electric push rod 8 to complete liquid suction action, after the liquid suction is finished, the cross arm 4 drives the liquid suction device 7 to move upwards and separate from a container bottle, the motor I18 drives the gear II 19 to rotate, the gear II 20 is meshed with the gear II to drive the upright post 2 to rotate in the base 1, therefore, the rotation and reversing of the liquid suction device 7 is completed, when the liquid suction and the horizontal position of the liquid suction device 7 needs to be adjusted, the motor III 23 is started, the motor II 24 is driven by the motor II 24 to rotate the piston rod II, and the cross arm 4 is driven by the motor II to slide on the screw rod 5 to slide on the horizontal position 5.

The utility model and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the utility model as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present utility model.

Claims

1. The utility model provides a pipettor for experiments which characterized in that: the automatic liquid transferring device comprises a base, a stand column, a lifting rotating device, a cross arm, a translation device, a sliding block, a liquid transferring device, an electric push rod and a clamping limiting device, wherein the stand column is rotationally arranged on the base; the clamping limiting device comprises a first fixing plate, a second fixing plate, a first pushing rod, a first spring, a limiting seat, an inserting rod, a second spring and a wire cylinder, wherein the first fixing plate and the second fixing plate are arranged in a sliding block, the first pushing rod is slidably arranged in the first fixing plate, the first spring is sleeved on the first pushing rod, one end of the first spring is arranged on the first fixing plate, the other end of the first spring is arranged on the second pushing rod, the limiting seat is arranged on the outer wall of the liquid transfer device, the inserting rod penetrates through the second fixing plate, the second spring is sleeved on the inserting rod, one end of the second spring is arranged on the second fixing plate, the other end of the second spring is arranged on the inserting rod, and the wire cylinder is in threaded connection with the sliding block and can push the first pushing rod.

2. An experimental pipette as defined in claim 1 wherein: the lifting and rotating device comprises a first motor, a first gear, a second motor and a first screw rod, wherein the first motor is arranged in the base, the first gear is arranged at the power output end of the first motor, the second gear is arranged at the lower end of the upright post and is meshed with the first gear, the second motor is arranged at the top end of the upright post, and the first screw rod is arranged at the power output end of the second motor and is in threaded connection with the cross arm.

3. An experimental pipette as defined in claim 2 wherein: the translation device comprises a motor III and a screw rod II, the motor III is arranged on the cross arm, and the screw rod II is arranged at the power output end of the motor III and is in threaded connection with the sliding block.

4. A laboratory pipette as defined in claim 3, wherein: the upright post is provided with a slot, and the cross arm is slidably arranged in the slot.

5. The laboratory pipette of claim 4, wherein: the bottom of the base is provided with a vacuum sucking disc.

6. An experimental pipette as defined in claim 5 wherein: the first spring always has a force for pulling the pushing rod towards the direction of the wire cylinder, and the second initial state of the spring can meet the condition that the inserting rod cannot be inserted between the limiting seats.

7. The laboratory pipette of claim 6, wherein: the contact surface of the pushing rod and the inserting rod is in a wedge-shaped surface arrangement.

8. The laboratory pipette of claim 7, wherein: the first motor, the second motor and the third motor are all forward and reverse motors.