CN210121486U

CN210121486U - Long service life's pipettor

Info

Publication number: CN210121486U
Application number: CN201920392066.8U
Authority: CN
Inventors: 谭斯品; 邹江; 刘梅冬
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-26
Filing date: 2019-03-26
Publication date: 2020-03-03
Anticipated expiration: 2029-03-26

Abstract

The utility model discloses a long service life's pipettor, comprising a main body, the top of main part is provided with the upper cover, the top of upper cover is provided with presses the briquetting, press the bottom fixedly connected with piston rod of briquetting, the both sides of piston rod all are provided with first spring, press the top fixedly connected with ring of briquetting, be provided with first axis of rotation on the ring, the one end of first axis of rotation is provided with the stock, be provided with the sleeve on the stock, the one end fixedly connected with base of upper cover, the top of base is provided with the second axis of rotation, is provided with the connecting block between second axis of rotation and the sleeve, the one end fixedly connected with horizontal pole of base. The utility model discloses a set up stock and limiting plate, play the effect of the first spring of protection, reached the effect that reduces spring deformation, through setting up the anticorrosive coating, reduce the corruption of piston, reached the effect that increases instrument life, through setting up installation device, reached the tight effect of clamp.

Description

Long service life's pipettor

Technical Field

The utility model relates to an experimental device technical field specifically is a long service life's pipettor.

Background

The pipettor is a laboratory glassware who often uses in biology and the chemistry experiment, and current pipettor is pressed through the thumb and is realized drawing and shifting of liquid, and the frequent use can lead to the spring to take place elastic deformation, causes the damage of instrument, draws the liquid that has corrosivity and can corrode the piston, reduces instrument life to the suction head installation is insecure, appears becoming flexible easily, influences the experimental result.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a long service life's pipettor possesses corrosion-resistant, the spring diminishes and the firm advantage of suction head, has solved the short and easy not hard up problem of suction head of instrument life.

In order to achieve the above object, the utility model provides a following technical scheme: a long-service-life liquid transfer device comprises a main body, wherein an upper cover is arranged at the top of the main body, a pressing block is arranged at the top of the upper cover, the bottom of the pressing block is fixedly connected with a piston rod, both sides of the piston rod are provided with first springs, the top of the pressing block is fixedly connected with a circular ring, the circular ring is provided with a first rotating shaft, one end of the first rotating shaft is provided with a long rod, the long rod is provided with a sleeve, one end of the upper cover is fixedly connected with a base, the top of the base is provided with a second rotating shaft, a connecting block is arranged between the second rotating shaft and the sleeve, one end of the base is fixedly connected with a cross bar, a roller shaft is arranged on the cross bar, a roller is arranged on the roller shaft, the main part is provided with scale marks, the bottom of the main part is provided with a suction head, and a mounting device is arranged between the main part and the suction head.

Preferably, the bottom fixedly connected with piston of piston rod, be provided with two sealing washers on the piston, the bottom of piston is provided with the anticorrosive coating, the middle part of piston rod is provided with the limiting plate.

Preferably, the both ends of installation device all are provided with the bolt, the one end of bolt is provided with first slider, the one end fixedly connected with connecting rod of first slider, the one end fixedly connected with second slider of connecting rod, the one end of second slider is provided with presss from both sides tight piece, presss from both sides and is provided with the second spring between tight piece and the installation device, be provided with sealed the pad between suction head and the installation device, and sealed pad fixed connection on the installation device.

Preferably, the two ends of the connecting block are respectively fixedly connected with the sleeve and the second rotating shaft, and the long rod and the sleeve slide relatively.

Preferably, one end of the long rod is fixedly connected with a handle, and the handle is perpendicular to the long rod.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a set up stock and limiting plate, forefinger pulling handle, handle press down the gyro wheel and slide downwards along the gyro wheel, the handle drives the stock, stock and sleeve slide each other, the second axis of rotation is the fulcrum, the stock sticks up first axis of rotation, first axis of rotation drives ring pulling press block, and then pulling piston rod, make the piston move up, the first spring is elongated and produces the shrink force, the limiting plate limits the stroke of piston rod, play the effect of protection first spring, after loosening the handle, first spring return, press block also moves down because of self gravity, the effect of reducing spring deformation has been reached, through setting up the anticorrosive coating, reduce the corruption of piston, the effect of increasing instrument life has been reached, through setting up installation device, insert the suction head into installation device, tighten the bolt, the bolt promotes first slider, first slider makes the second slider promote the clamp block through the connecting rod, the clamping block exerts a certain acting force on the suction head, so that the clamping effect is achieved.

2. The utility model discloses a stock can make first spring reduce deformation volume, can effectively avoid the piston corrosion phenomenon to appear through the anticorrosive coating, can effectively strengthen the stability of suction head through the installation device, can effectively reduce the tensile length of first spring through the limiting plate to the effectual problem of pipettor life weak point of having solved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

fig. 3 is a schematic structural view of the installation device of the present invention.

In the figure: the device comprises a main body 1, a suction head 2, a scale mark 3, an upper cover 4, a piston rod 5, a first spring 6, a pressing block 7, a first rotating shaft 8, a ring 9, a long rod 10, a sleeve 11, a second rotating shaft 12, a handle 13, a base 14, a mounting device 15, a connecting block 16, a limiting plate 17, a piston 18, a sealing ring 19, an anticorrosive coating 20, a sealing gasket 21, a clamping block 22, a second spring 23, a second sliding block 24, a connecting rod 25, a bolt 26, a first sliding block 27, a cross rod 28, a roller shaft 29 and a roller 30.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a long-life pipette includes a main body 1, an upper cover 4 is disposed on the top of the main body 1, a pressing block 7 is disposed on the top of the upper cover 4, a piston rod 5 is fixedly connected to the bottom of the pressing block 7, a piston 18 is fixedly connected to the bottom of the piston rod 5, two sealing rings 19 are disposed on the piston 18, an anti-corrosion layer 20 is disposed on the bottom of the piston 18, the anti-corrosion layer 20 plays a role of enhancing the corrosion resistance of the piston 18, a limiting plate 17 is disposed in the middle of the piston rod 5, the limiting plate 17 plays a role of limiting the lifting stroke of the piston rod 5, first springs 6 are disposed on both sides of the piston rod 5, a ring 9 is fixedly connected to the top of the pressing block 7, the ring 9 plays a role of facilitating lifting, a first rotating shaft 8 is disposed on the ring 9, a long rod 10 is disposed on one, the handle 13 is perpendicular to the long rod 10, the long rod 10 is provided with a sleeve 11, one end of the upper cover 4 is fixedly connected with a base 14, the top of the base 14 is provided with a second rotating shaft 12, a connecting block 16 is arranged between the second rotating shaft 12 and the sleeve 11, two ends of the connecting block 16 are respectively fixedly connected with the second rotating shaft 12 and the sleeve 11, the long rod 10 slides relative to the sleeve 11, one end of the base 14 is fixedly connected with a cross rod 28, the cross rod 28 is provided with a roller shaft 29, the roller shaft 29 is provided with a roller 30, the forefinger pulls the handle 13, the handle 13 presses the roller 30 and slides downwards along the roller 30, the handle 13 drives the long rod 10, the long rod 10 and the sleeve 11 slide mutually, the second rotating shaft 12 is a fulcrum, the long rod 10 tilts the first rotating shaft 8, the first rotating shaft 8 drives the ring 9 to pull the pressing block 7, further pulls the piston rod 5, the piston 18 moves, the limit plate 17 limits the stroke of the piston rod 5, after the handle 13 is loosened, the first spring 6 returns, the pressing block 7 moves downwards due to the self gravity to play a role in protecting the first spring 6, the scale mark 3 is arranged on the main body 1, the suction head 2 is arranged at the bottom of the main body 1, the mounting device 15 is arranged between the main body 1 and the suction head 2, bolts 26 are arranged at two ends of the mounting device 15, a first sliding block 27 is arranged at one end of each bolt 26, a connecting rod 25 is fixedly connected at one end of each first sliding block 27, a second sliding block 24 is fixedly connected at one end of each connecting rod 25, a clamping block 22 is arranged at one end of each second sliding block 24, a second spring 23 is arranged between each clamping block 22 and the mounting device, a sealing gasket 21 is arranged between the suction head 2 and the mounting device 15, the sealing gasket 21 is fixedly connected to the mounting device 15, the sealing gasket 21 plays a role, the bolt 26 is tightened, the bolt 26 pushes the first slide block 27, the first slide block 27 enables the second slide block 24 to push the clamping block 22 through the connecting rod 25, and the clamping block 22 exerts a certain acting force on the suction head 2, so that the clamping effect is achieved.

The working principle is as follows: when the utility model is used, the suction head 2 is inserted into the mounting device 15, the bolt 26 is screwed, the bolt 26 pushes the first slider 27, the first slider 27 enables the second slider 24 to push the clamping block 22 through the connecting rod 25, the clamping block 22 clamps the suction head 2, the main body 1 is held by hand, the suction head 2 is vertically and downwardly put into the liquid to be extracted, the forefinger pulls the handle 13, the handle 13 presses the roller 30 and downwardly slides along the roller 30, the handle 13 drives the long rod 10, the long rod 10 and the sleeve 11 mutually slide, the second rotating shaft 12 is a fulcrum, the long rod 10 tilts the first rotating shaft 8, the first rotating shaft 8 drives the ring 9 to pull the pressing block 7, further the piston rod 5 is pulled, the piston 18 moves upwards, the first spring 6 is elongated to generate contraction force, the liquid is sucked into the main body 1, the scale mark 3 is observed, after reaching the required position, the pulling of the handle 13 is stopped, the limiting plate 17 limits the stroke of the, after the handle 13 is loosened, the first spring 6 returns, the pressing block 7 and the limiting plate 17 move downwards due to the self gravity, the piston 18 moves downwards to push out the liquid, and when the liquid is not completely discharged, the pressing block 7 is pressed down by the thumb, the piston 18 continues to move downwards to completely discharge the liquid.

In summary, the following steps: the utility model discloses a through setting up stock and limiting plate, forefinger pulling handle, the handle presses down the gyro wheel and slides downwards along the gyro wheel, the handle drives the stock, stock and sleeve slide, the second axis of rotation is the fulcrum, the stock sticks up first axis of rotation, first axis of rotation drives the ring and pulls the press block, and then pulls the piston rod, make the piston move up, the first spring is elongated and produces the contractile force, the limiting plate limits the stroke of piston rod, play the effect of protecting the first spring, after loosening the handle, the first spring return, the press block also moves down because of self gravity, the effect of reducing spring deformation has been reached, through setting up the anticorrosive coating, reduce the corruption of piston, the effect of increasing instrument life has been reached, through setting up installation device, insert the suction head into installation device, tighten the bolt, the bolt promotes first slider, first slider makes the second slider promote the clamp block through the connecting rod, the clamping block exerts a certain acting force on the suction head, so that the clamping effect is achieved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A long service life's pipettor, includes main part (1), the top of main part (1) is provided with upper cover (4), its characterized in that: the top of the upper cover (4) is provided with a pressing block (7), the bottom of the pressing block (7) is fixedly connected with a piston rod (5), both sides of the piston rod (5) are provided with first springs (6), the top of the pressing block (7) is fixedly connected with a ring (9), the ring (9) is provided with a first rotating shaft (8), one end of the first rotating shaft (8) is provided with a long rod (10), the long rod (10) is provided with a sleeve (11), one end of the upper cover (4) is fixedly connected with a base (14), the top of the base (14) is provided with a second rotating shaft (12), a connecting block (16) is arranged between the second rotating shaft (12) and the sleeve (11), one end of the base (14) is fixedly connected with a cross rod (28), the roller cross rod (28) is provided with a roller shaft (29), and the roller shaft (29) is provided with a roller (30), the novel suction cup is characterized in that scale marks (3) are arranged on the main body (1), a suction head (2) is arranged at the bottom of the main body (1), and a mounting device (15) is arranged between the main body (1) and the suction head (2).

2. A long-life pipette as defined in claim 1, wherein: the bottom fixedly connected with piston (18) of piston rod (5), be provided with two sealing washer (19) on piston (18), the bottom of piston (18) is provided with anticorrosive coating (20), the middle part of piston rod (5) is provided with limiting plate (17).

3. A long-life pipette as defined in claim 1, wherein: the utility model discloses a mounting device, including installation device (15), bolt (26), one end of bolt (26) is provided with first slider (27), the one end fixedly connected with connecting rod (25) of first slider (27), the one end fixedly connected with second slider (24) of connecting rod (25), the one end of second slider (24) is provided with presss from both sides tight piece (22), presss from both sides and is provided with second spring (23) between tight piece (22) and the installation device, be provided with sealed pad (21) between suction head (2) and installation device (15), and sealed pad (21) fixed connection is on installation device (15).

4. A long-life pipette as defined in claim 1, wherein: the two ends of the connecting block (16) are respectively fixedly connected with the second rotating shaft (12) and the sleeve (11), and the long rod (10) and the sleeve (11) slide relatively.

5. A long-life pipette as defined in claim 1, wherein: one end of the long rod (10) is fixedly connected with a handle (13), and the handle (13) is vertical to the long rod (10).