CN210279199U - Vacuum liquid transfer device - Google Patents

Abstract

The utility model discloses a vacuum pipettor, including moving liquid handle, first connecting block, second stopper, finger hook, air duct, vacuum pump and foot switch, move the bottom fixedly connected with first connecting block of liquid handle, and the bottom of first connecting block is connected with the suction head, move the inside of liquid handle and seted up the water pipe, the right side inner wall central point department of putting of water pipe is contradicted and is had the extrusion piece, the right side central point department of putting of extrusion piece fixedly connected with head rod, the top meshing of head rod has fan-shaped fluted disc, the central point department of putting of fan-shaped fluted disc articulates the central point department of putting of first fixed block, the top fixedly connected with second connecting block of fan-shaped fluted disc. The utility model discloses a be provided with according to the briquetting, it is more convenient to enable the pipettor to move the liquid, and the device can effectively increase the efficiency of absorbing the waste liquid through being provided with the vacuum pump, and the device can effectively collect the waste liquid through being provided with the receiving flask.

Description

Vacuum liquid transfer device

Technical Field

The utility model relates to a life science field technical field specifically is vacuum pipettor.

Background

With the development of society and the development of science, in the field of life science, the movement of waste liquid is performed by a handheld liquid transfer device, and liquid transfer devices such as liquid transfer devices and the like perform liquid transfer by utilizing negative pressure.

At present generally use the pipettor that has quantity control in the life science field, the volume of accurate control liquid, move liquid body handle and pipettor suction head simultaneously and match the use, prevent the pollution, but the absorption at the waste liquid is, if the absorption total amount of liquid exceeds the maximum range of pipettor, need carry out many times, in aseptic superclean bench operation in particular, the waste liquid that removes need be preserved in the waste liquid save set in the superclean bench, the waste liquid is preserved in the superclean bench and is also caused the pollution easily, consequently need urgently to need the vacuum pipettor to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a vacuum pipettor to the operation of the pipettor of proposing is inconvenient in solving above-mentioned background art, and is inefficient, the unable preserved problem of waste liquid.

In order to achieve the above object, the utility model provides a following technical scheme: the vacuum pipettor comprises a pipetting handle, a first connecting block, a second limiting block, a finger hook, an air duct, a vacuum pump and a foot switch, wherein the first connecting block is fixedly connected to the bottom end of the pipetting handle, a suction head is connected to the bottom end of the first connecting block, a water passing pipe is arranged inside the pipetting handle, an extrusion block is butted at the central position of the inner wall of the right side of the water passing pipe, the first connecting block is fixedly connected to the central position of the right side of the extrusion block, a fan-shaped fluted disc is meshed at the top end of the first connecting block, the central position of the fan-shaped fluted disc is hinged to the central position of the first fixing block, a second connecting block is fixedly connected to the top end of the fan-shaped fluted disc, the first limiting block is inserted into the inner side of the second connecting block, a transmission disc is fixedly connected to the back face of the first limiting block, the back of the other group of the first limiting blocks is hinged with a second connecting rod, the top end of the second connecting rod is hinged with a pressing block, the pressing block is inserted in the limiting protruding block, a finger hook is fixed on the left side surface of the liquid transferring handle, a third connecting block is inserted in the portion, close to the bottom end, of the finger hook, a third limiting block is sleeved on the surface, close to the right side, of the third connecting block, second springs are connected with the left two ends of the third limiting block, one end of each second spring is fixed on the inner wall of the liquid transferring handle, the top end of the liquid transferring handle is fixedly connected with two groups of the second limiting blocks, second fixing blocks are fixed on the inner sides of the two groups of the second limiting blocks, the left sides of the second fixing blocks abut against the right side surface of the one-way valve, the center position of the top end of the one-way valve is connected with, a telescopic rod is fixed on one side of the top end of the one-way valve, which is far away from the first spring, a first connecting plate is fixed on the top end of the telescopic rod, a placing cavity is formed in the top end of the left side of the second limiting block, the inner part of the placing cavity is abutted against the positioning hook, the top end of the right side of the positioning hook is connected with a third spring, and the right side of the third spring is fixed with a second connecting plate which is arranged on the two side surfaces of the third fixed block, and the top end of the third fixing block is connected with an air duct, one end of the air duct is connected with a sealing plug, the bottom end of the sealing plug is fixedly connected with the sealing plug, an air suction port is fixed on one side of the top end surface of the sealing plug, which is far away from the air inlet, the bottom of sealing plug is connected with the receiving flask, the top of induction port is connected with another group the air duct, the one end of another group the air duct is connected with the vacuum pump, the right side of vacuum pump is connected with foot switch through the wire.

Preferably, the surface of the liquid inlet at the bottom end of the first connecting block is sleeved with a circle of rubber bulge, the inner wall of the top end of the suction head is provided with a circle of annular groove, and the shape and the size of the rubber bulge at the bottom end of the first connecting block are the same as those of the annular groove on the inner wall of the top end of the suction head.

Preferably, a rack is fixed at the top end of the first connecting rod, and the size of a tooth block gap of the rack is the same as that of a tooth block gap at the bottom end of the fan-shaped fluted disc.

Preferably, a first limiting block penetrates through the second connecting block, and the diameter of the surface of the first limiting block is the same as the diameter of the inner side of the second connecting block.

Preferably, the right side of the pressing block is provided with a u-shaped groove, and the inner shape and size of the u-shaped groove are the same as the surface diameter of the limiting protrusion block.

Preferably, the surface of the first connecting plate is provided with small holes at equal intervals.

Compared with the prior art, the beneficial effects of the utility model are that: this vacuum pipettor is through being provided with according to the briquetting, and it is more convenient to enable the pipettor to move the liquid, and the device can effectively increase the efficiency of absorbing the waste liquid through being provided with the vacuum pump, and the device can effectively collect the waste liquid through being provided with the receiving flask.

(1) The device is provided with a pressing block, a third connecting block on the left surface of the pipetting handle is pressed by a little finger, so that the inner space of the water passing pipe is in a sealed state, and liquid can be sucked by the reciprocating motion of the squeezing block.

(2) The device is through being provided with the vacuum pump, through the vacuum pump with liquid via air duct suction collecting flask, can collect the waste liquid through the collecting flask, final centralized processing

Drawings

FIG. 1 is a schematic sectional view of the front view of the structure of the present invention;

FIG. 2 is a schematic sectional view of the liquid-transferring handle of the present invention in front view;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;

fig. 4 is a partially enlarged schematic view of the point B in fig. 2 according to the present invention.

In the figure: 1. a pipetting handle; 2. a first connection block; 3. a suction head; 4. a water pipe; 5. extruding the block; 6. a first connecting rod; 7. a fan-shaped fluted disc; 8. a first fixed block; 9. a first stopper; 10. a second connecting block; 11. a drive plate; 12. a second connecting rod; 13. a limit bump; 14. a pressing block; 15. a second fixed block; 16. a one-way valve; 17. a first spring; 18. a placement chamber; 19. a second limiting block; 20. a first connecting plate; 21. a telescopic rod; 22. a finger hook; 23. a third limiting block; 24. a second spring; 25. a third connecting block; 26. a positioning hook; 27. a third spring; 28. a second connecting plate; 29. a third fixed block; 30. an air duct; 31. an air inlet; 32. a sealing plug; 33. a collection bottle; 34. an air suction port; 35. a vacuum pump; 36. a foot switch.

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. 1-4, the present invention provides an embodiment: vacuum pipettor, including moving liquid handle 1, first linkage block 2, second stopper 19, indicate hook 22, air duct 30, vacuum pump 35 and foot switch 36, move the first linkage block 2 of bottom fixedly connected with of liquid handle 1, the bottom inlet surface of first linkage block 2 has cup jointed the round rubber arch, and the top inner wall of suction head 3 has seted up round annular groove, and the bellied shape size of 2 bottom rubbers of first linkage block is the same with the annular groove shape size of 3 top inner walls of suction head, enable the bottom at first linkage block 2 of suction head 3 card, make it can not drop under the effect of not receiving the external force, and the bottom of first linkage block 2 is connected with suction head 3, water pipe 4 has been seted up to the inside of moving liquid handle 1, the conflict of right side inner wall central point department of water pipe 4 has extrusion piece 5.

A first connecting rod 6 is fixedly connected at the right center of the extrusion block 5, a rack is fixed at the top end of the first connecting rod 6, and the tooth block gap of the rack is the same as the tooth block gap at the bottom end of the fan-shaped fluted disc 7, so that the fan-shaped fluted disc 7 drives the first connecting rod 6 to reciprocate, the fan-shaped fluted disc 7 is meshed at the top end of the first connecting rod 6, the central position of the fan-shaped fluted disc 7 is hinged at the central position of the first fixing block 8, the top end of the fan-shaped fluted disc 7 is fixedly connected with a second connecting block 10, a first limiting block 9 penetrates through the second connecting block 10, and the surface diameter of the first limiting block 9 is the same as the inside diameter of the second connecting block 10, so that the second connecting block 10 can reciprocate along with the transmission disc 11, the first limiting block 9 is inserted into the inside of the second connecting block 10, and the transmission disc 11 is fixedly connected to the back of the first limiting block 9.

The back of the transmission disc 11 is fixed with another group of first limiting blocks 9, the back of the other group of first limiting blocks 9 is hinged with a second connecting rod 12, the top end of the second connecting rod 12 is hinged with a pressing block 14, the right side of the pressing block 14 is provided with a U-shaped groove, the inner shape and size of the U-shaped groove are the same as the surface diameter of the limiting protruding block 13, the pressing block 14 can slide on the surface of the limiting protruding block 13, the pressing block 14 is inserted in the limiting protruding block 13, the left side surface of the liquid-transferring handle 1 is fixed with a finger hook 22, a third connecting block 25 is inserted in the inner part of the finger hook 22 close to the bottom end, the surface of the third connecting block 25 close to the right side is sleeved with a third limiting block 23, the left two ends of the third limiting block 23 are connected with second springs 24, one end of each second spring 24 is fixed on the inner wall of the liquid-transferring handle 1, the top end of the, the inboard of two sets of second stopper 19 is fixed with second fixed block 15, the left side conflict of second fixed block 15 has the right side surface of check valve 16, the top central point department of putting of check valve 16 is connected with first spring 17, and the top of first spring 17 is fixed with first connecting plate 20, the aperture has evenly been seted up to the surface equidistance of first connecting plate 20, the aperture seted up through the equidistance, play the effect of current-limiting, when preventing just beginning to inhale liquid, it is too much to inhale liquid, one side that first spring 17 was kept away from on the top of check valve 16 is fixed with telescopic link 21, the inherent first connecting plate 20 in top of telescopic link 21, the left side top of second stopper 19 has been seted up and has been placed chamber 18, and place the inside conflict location hook 26 in chamber 18, the right side top of location hook 26 is connected with third spring 27, and the right side of third spring 27 is fixed with second connecting plate.

The second connecting plate 28 is seted up on the both sides surface of third fixed block 29, and the top of third fixed block 29 is connected with air duct 30, the one end of air duct 30 is connected with sealing plug 32, and the bottom fixedly connected with sealing plug 32 of sealing plug 32, one side that the top surface of sealing plug 32 kept away from air inlet 31 is fixed with induction port 34, the bottom of sealing plug 32 is connected with collecting bottle 33, the top of induction port 34 is connected with another group air duct 30, the one end of another group air duct 30 is connected with vacuum pump 35, the model of this vacuum pump 35 is BYNFZ, the right side of vacuum pump 35 is connected with foot switch 36 through the wire, and the output of foot switch 36 is connected with the input electricity of vacuum pump.

The working principle is as follows: the device is powered by an external power supply, when in use, firstly, when in liquid transfer, the finger hook 22 is held, then the third connecting block 25 on the left side surface of the liquid transfer handle 1 can be pressed by a little finger, so that the inner space of the water passing pipe 4 is in a sealed state, at the moment, the pressing block 14 can be pressed, the pressing block 14 slides on the surface of the limiting lug 13, the second connecting rod 12 can be driven to reciprocate up and down, the driving disc 11 can be driven to do circular motion by the movement of the second connecting rod 12, further, the second connecting block 10 on the front side of the driving disc 11 is driven to do reciprocating motion left and right by the first limiting block 9, the fan-shaped fluted disc 7 at the bottom end of the second connecting block 10 is meshed with the first connecting rod 6, the extrusion block 5 can be driven to do reciprocating motion, further, liquid can be sucked into the water passing pipe 4 through the suction head 3, the pressing block, the pressing block 14 is pressed again, so that the liquid can be squeezed out.

When waste liquid needs to be sucked, the thumb is loosened, the third connecting block 25 is popped up, the foot switch 36 is stepped on by the sole, the output end of the foot switch 36 is electrically connected with the input end of the vacuum pump 35 through a lead, the vacuum pump 35 is started, liquid is pumped into the collecting bottle 33 through the air guide pipe 30 by the vacuum pump 35, and the waste liquid can be collected through the collecting bottle 33 and finally is treated in a centralized manner.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. Vacuum pipettor, including move liquid handle (1), first connecting block (2), second stopper (19), indicate hook (22), air duct (30), vacuum pump (35) and foot switch (36), its characterized in that: the bottom fixedly connected with first connecting block (2) of moving liquid handle (1), and the bottom of first connecting block (2) is connected with suction head (3), water pipe (4) has been seted up to the inside of moving liquid handle (1), the right side inner wall central point department of putting of water pipe (4) has contradicted extrusion piece (5), the right side central point department of putting of extrusion piece (5) fixedly connected with head rod (6), the top meshing of head rod (6) has fan-shaped fluted disc (7), the central point department of putting of fan-shaped fluted disc (7) articulates the central point department of putting of first fixed block (8), the top fixedly connected with second connecting block (10) of fan-shaped fluted disc (7), the inboard of second connecting block (10) is inserted and is equipped with first stopper (9), the back fixedly connected with transmission dish (11) of first stopper (9), the back of the transmission disc (11) is fixedly provided with another group of first limiting blocks (9), the back of the other group of first limiting blocks (9) is hinged with a second connecting rod (12), the top ends of the second connecting rods (12) are hinged with pressing blocks (14), the pressing blocks (14) are inserted into the limiting protruding blocks (13), the left side surface of the liquid transferring handle (1) is fixedly provided with finger hooks (22), the inner parts, close to the bottom ends, of the finger hooks (22) are inserted with third connecting blocks (25), the surface, close to the right side, of each third connecting block (25) is sleeved with a third limiting block (23), the two left side ends of each third limiting block (23) are connected with second springs (24), one ends of the second springs (24) are fixed on the inner wall of the liquid transferring handle (1), and the top ends of the liquid transferring handle (1) are fixedly connected with two groups of second limiting blocks (19), the inboard of two sets of second stopper (19) is fixed with second fixed block (15), the left side of second fixed block (15) is contradicted and is had the right side surface of check valve (16), the top central point department of putting of check valve (16) is connected with first spring (17), and the top of first spring (17) is fixed with first connecting plate (20), one side that first spring (17) was kept away from on the top of check valve (16) is fixed with telescopic link (21), the inherent first connecting plate (20) in top of telescopic link (21), the left side top of second stopper (19) has been seted up and has been placed chamber (18), and has been contradicted the location hook (26) in the inside of placing chamber (18), the right side top of location hook (26) is connected with third spring (27), and the right side of third spring (27) is fixed with second connecting plate (28), the both sides surface at third fixed block (29) is seted up to second connecting plate (28), and the top of third fixed block (29) is connected with air duct (30), the one end of air duct (30) is connected with sealing plug (32), and the bottom fixedly connected with sealing plug (32) of sealing plug (32), one side that air inlet (31) were kept away from to the top surface of sealing plug (32) is fixed with induction port (34), the bottom of sealing plug (32) is connected with receiving flask (33), the top of induction port (34) is connected with another group air duct (30), another group the one end of air duct (30) is connected with vacuum pump (35), the right side of vacuum pump (35) is connected with foot switch (36) through the wire.

2. The vacuum pipette according to claim 1, characterized in that: the bottom inlet surface of the first connecting block (2) is sleeved with a circle of rubber protrusion, the top inner wall of the suction head (3) is provided with a circle of annular groove, and the shape and the size of the rubber protrusion at the bottom of the first connecting block (2) are the same as those of the annular groove at the top inner wall of the suction head (3).

3. The vacuum pipette according to claim 1, characterized in that: the top end of the first connecting rod (6) is fixed with a rack, and the size of a tooth block gap of the rack is the same as that of a tooth block gap at the bottom end of the fan-shaped fluted disc (7).

4. The vacuum pipette according to claim 1, characterized in that: a first limiting block (9) penetrates through the inside of the second connecting block (10), and the diameter of the surface of the first limiting block (9) is the same as that of the inner side of the second connecting block (10).

5. The vacuum pipette according to claim 1, characterized in that: the right side of the pressing block (14) is provided with a U-shaped groove, and the inner shape and the inner size of the U-shaped groove are the same as the surface diameter of the limiting protruding block (13).

6. The vacuum pipette according to claim 1, characterized in that: the surface of the first connecting plate (20) is provided with small holes at equal intervals.

Images