CN210474029U - Traditional chinese medicine detects liquid-transfering device - Google Patents

Abstract

The utility model provides a traditional chinese medicine detects liquid-transfering device, including barrel and pipette, be provided with the piston rod in the barrel, the lower extreme of barrel is provided with the connecting piece, the inside of connecting piece is provided with the through-hole, the through-hole with the inside intercommunication of barrel, the outside of connecting piece is provided with limit structure, the connecting piece passes through limit structure with the pipette is connected, traditional chinese medicine detect liquid-transfering device, through set up the connecting piece on the barrel, set up limit structure on the connecting piece, the connecting piece passes through limit structure and pipette and connects, avoids the experiment operation in-process, barrel and pipette break away from each other, guarantee the safe and reliable of experiment operation.

Description

Traditional chinese medicine detects liquid-transfering device

Technical Field

The utility model relates to a pipettor technical field particularly, relates to a traditional chinese medicine detects liquid-transfering device.

Background

The liquid-transfering device is widely used in biochemical research laboratories, hospitals and pharmaceutical companies, can be used for sample processing operations such as sample pretreatment, sample purification and amplification, sample dilution and concentration, sample preparation and the like, and generally comprises a liquid-transfering sleeve, a piston rod, a plug nozzle and the like. The current spigot and move liquid sleeve and directly cup joint usually, can appear liquid oozing in the use, perhaps the condition that spigot and move liquid sleeve break away from influences the experiment operation.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a pipetting device for detecting traditional Chinese medicine, so as to solve at least one aspect of the above problems to a certain extent.

In order to solve the problem, the utility model provides a traditional chinese medicine detects liquid-transfering device, including barrel and pipette, be provided with the piston rod in the barrel, the lower extreme of barrel is provided with the connecting piece, the inside of connecting piece is provided with the through-hole, the through-hole with the inside intercommunication of barrel, the outside of connecting piece is provided with limit structure, the connecting piece passes through limit structure with the pipette is connected.

Optionally, the number of the limiting structures is multiple.

Optionally, the limiting structure includes a cavity, an opening is formed in the outer side wall of the cavity, a fastening member is arranged in the opening, an elastic member is arranged in the cavity, and the elastic member is abutted to the fastening member.

Optionally, the elastic member is an arc-shaped elastic sheet.

Optionally, the snap is a ball.

Optionally, the sealing structure is arranged on the connecting piece and comprises a groove body, and a sealing piece is arranged in the groove body.

Optionally, the seal is an O-ring seal.

Optionally, the cylinder further comprises a mounting seat, the mounting seat is arranged at the upper end of the cylinder body, and the mounting seat is in threaded connection with the piston rod.

Optionally, a groove adapted to the fastener is disposed on an inner side wall of the pipette.

Optionally, the lower end of the cylinder is further provided with a sheath, and a gap is formed between the inner side wall of the sheath and the outer side wall of the connecting piece.

Compared with the prior art, traditional chinese medicine detect move liquid device have following advantage:

traditional chinese medicine detect liquid-transfering device, through set up the connecting piece on the barrel, set up limit structure on the connecting piece, the connecting piece passes through limit structure and pipette and connects, avoids the experiment operation in-process, barrel and pipette break away from each other, guarantees the safe and reliable of experiment operation.

Drawings

Fig. 1 is a schematic structural view of a traditional Chinese medicine detection pipetting device of the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

fig. 3 is a schematic structural view of the mounting seat of the pipetting device for traditional Chinese medicine detection.

Description of reference numerals:

1. barrel, 2, pipette, 3, piston rod, 4, connecting piece, 5, through-hole, 6, limit structure, 61, cavity, 62, opening, 63, buckle spare, 64, elastic component, 7, seal structure, 71, cell body, 72, sealing member, 8, mount pad, 9, recess, 10, sheath.

Detailed Description

The liquid-transfering device is widely used in biochemical research laboratories, hospitals and pharmaceutical companies, can be used for sample processing operations such as sample pretreatment, sample purification and amplification, sample dilution and concentration, sample preparation and the like, and generally comprises a liquid-transfering sleeve, a piston rod, a plug nozzle and the like. Current nozzle and move liquid sleeve and directly cup joint usually, promote the piston rod and make the barrel in produce the pressure that is greater than the external world in moving liquid device use to make the liquid discharge in the barrel, the nozzle also can receive the influence of pressure with moving liquid telescopic junction like this, can appear liquid oozing in the use, perhaps the nozzle with move the condition that liquid sleeve breaks away from, influence the experiment operation.

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

As shown in fig. 1, a traditional Chinese medicine detection pipetting device comprises a cylinder 1 and a pipette 2, wherein the pipette 2 is used for loading liquid to be detected, a piston rod 3 is arranged in the cylinder 1, and the piston rod 3 is inserted into the cylinder 1 along the axial direction of the cylinder 1; the piston rod 3 is used for carrying out linear motion along the axis direction of the barrel 1, the lower end of the barrel 1 is provided with a connecting piece 4, and particularly, the barrel 1 and the connecting piece 4 are integrally formed, so that the sealing performance is better. Connecting piece 4 is whole cylindric, the inside of connecting piece 4 is provided with through-hole 5, and through-hole 5 has been seted up at the middle part of specific connecting piece 4, through-hole 5 with the inside intercommunication of barrel 1, the inside hollow space of barrel 1 is linked together via through-hole 5 and pipette 2's inside, the outside of connecting piece 4 is provided with limit structure 6, connecting piece 4 passes through limit structure 6 with pipette 2 connects to avoid barrel 1 and pipette 2 to break away from each other, guarantee the safe and reliable of experiment operation.

In the embodiment, the piston rod 3 is moved in the cylinder 1 to extrude the air in the cylinder 1, so as to push the liquid in the pipette 2 to be discharged, and the liquid with the same volume as the space through which the piston rod 3 moves can be pushed out; when sucking liquid, along with the piston rod 3 in the barrel 1 is pulled out, liquid is sucked in the pipette 2 under the effect of negative pressure in the barrel 1, and the barrel 1 does not contact with liquid, and the pipette 2 that usually comprises plastics is made dirty, can change the pipette after using, and convenient to use is being convenient for improve detection efficiency when multiple type liquid detection time measuring.

The quantity of limit structure 6 is a plurality of, and 6 circumference intervals of a plurality of limit structure set up the lateral wall at connecting piece 4, are convenient for strengthen the joint strength of pipette 2 and connecting piece 4, further avoid pipette 2 to drop.

As shown in fig. 2, the limiting structure 6 includes a cavity 61, the cavity 61 is formed by opening the outer side wall of the connecting member 4, an opening 62 is provided on the outer side wall of the cavity 61, a latch 63 is provided in the opening 62, specifically, the latch 63 is placed at the position of the opening 62, the shape of the latch 63 is matched with the shape of the opening 62, it can be understood that the size of the opening 62 is smaller than that of the latch 63, so as to avoid the latch 63 from disengaging, and the latch 63 protrudes relative to the opening 62 under the condition of being pressed by the elastic member 64, so as to be conveniently engaged with the groove 9 on the pipette 2. Preferably, the catch 63 is a ball and the opening 62 is a circular hole, it being understood that the diameter of the ball is greater than the diameter of the opening, thereby preventing the ball from escaping the opening. Be provided with the elastic component 64 in the cavity 61, it is specific, the elastic component 64 is placed in the cavity 61, leaves the space allowance in the direction that the elastic component 64 takes place to deform to it is more smooth and easy to make the block process. Preferably, the side wall of the cavity 61 is provided with a blocking protrusion, and the end of the elastic member 64 is limited in a gap between the blocking protrusion and the side wall of the cavity, so that the reliability of the cooperation of the elastic member and the buckling member is further ensured. The elastic piece 64 abuts against the fastener 63, in this embodiment, the elastic piece 64 is an arc-shaped elastic piece, and the top end of the arc-shaped elastic piece abuts against the fastener 63, so that the fastener 63 has the largest moving distance in the deformation process of the elastic piece 64, and the connection strength between the connector 63 and the pipette 2 is further improved.

As shown in fig. 2, the liquid suction device further comprises a sealing structure 7 arranged on the connecting piece 4, wherein the sealing structure 7 comprises a groove body 71, the groove body 71 is formed by arranging a circle of groove on the outer side wall of the connecting piece 4, the groove body 71 is arranged below the cavity 61, and the connecting piece 4 and the pipette 2 are clamped and connected and simultaneously sealed, so that the sealing performance of the connection between the connecting piece 4 and the pipette 2 is improved, and the liquid seepage is further avoided. A sealing element 72 is arranged in the groove body 71, preferably, the sealing element 72 is an O-ring, the sealing element 72 is sleeved on the groove body 71 for a circle, and the sealing element 72 radially protrudes out of the groove opening of the groove body 71 so as to firmly engage with the pipette 2, thereby ensuring that the connecting element 4 and the pipette 2 have good sealing performance after being connected.

As shown in fig. 3, still include mount pad 8, mount pad 8 sets up the upper end of barrel 1, mount pad 8 with 3 threaded connection of piston rod, the outside of piston rod 3 is provided with the external screw thread, mount pad 8 is the boss structure, and the lateral surface of the lower part of mount pad 8 is provided with the external screw thread, the inside wall of the upper end of barrel 1 is provided with the internal thread of adaptation, the inside wall of mount pad 8 is provided with the internal thread with the external screw thread looks adaptation of piston rod 3, piston rod 3 rotates the in-process for mount pad 8, the piston rod carries out rectilinear movement in barrel 1, the straight line propulsion progress accessible piston rod 3's pitch calculation of piston rod 3, when rotatory piston rod 3 rotates, the rectilinear propulsion of piston rod 3 only removes a small amount of distance, can realize the precision and advance the medicine, and then reach better liquid.

Be provided with on the inside wall of pipette 2 with the recess 9 of fastener 63 adaptation, recess 9 is for offering the round groove formation at the inside wall of pipette 2, does not need point-to-point alignment in circumference, and fastener 63 and recess 9 of being convenient for carry out quick block.

Still be provided with the boss structure in the pipette 2 for carry on spacingly to the connecting piece, avoid pegging graft excessively, when the grafting of pipette 2 and connecting piece 4 is restricted, can accomplish the block of buckle spare 63 and recess 9, improve the convenience of pipette 2 and connecting piece 4 block.

The lower extreme of barrel 1 still is provided with sheath 10, and sheath and barrel integrated into one piece set up, have higher intensity, the inside wall of sheath 10 with have the clearance between the lateral wall of connecting piece 4, the distance in clearance is the same with the thickness of pipette wall, and when pipette 2 and 4 block connections of connecting piece, during the clearance is inserted to the upper end of pipette 2, shelters from the connection gap of pipette 2 and connecting piece 4 on the one hand, avoids the dust to get into, and on the other hand also can play the guide effect, strengthens the effect of the relation of connection of pipette 2 and connecting piece 4.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention, and the scope of the present invention is defined by the appended claims.

Claims (10)

1. The utility model provides a traditional chinese medicine detects liquid-transfering device, its characterized in that, includes barrel (1) and pipette (2), be provided with piston rod (3) in barrel (1), the lower extreme of barrel (1) is provided with connecting piece (4), the inside of connecting piece (4) is provided with through-hole (5), through-hole (5) with the inside intercommunication of barrel (1), the outside of connecting piece (4) is provided with limit structure (6), connecting piece (4) pass through limit structure (6) with pipette (2) are connected.

2. The traditional Chinese medicine detection pipetting device according to claim 1, wherein the number of the limiting structures (6) is multiple.

3. The traditional Chinese medicine detection pipetting device according to claim 1, wherein the limiting structure (6) comprises a cavity (61), an opening (62) is formed in the outer side wall of the cavity (61), a clamping member (63) is arranged in the opening (62), an elastic member (64) is arranged in the cavity (61), and the elastic member (64) is abutted to the clamping member (63).

4. The traditional Chinese medicine detection pipetting device according to claim 3, wherein the elastic member (64) is an arc-shaped elastic sheet.

5. The traditional Chinese medicine detection pipetting device according to claim 3, wherein the fastener (63) is a ball.

6. The traditional Chinese medicine detection pipetting device according to claim 1, further comprising a sealing structure (7) arranged on the connecting member (4), wherein the sealing structure (7) comprises a groove body (71), and a sealing member (72) is arranged in the groove body (71).

7. The chinese medicine detection pipetting device of claim 6, wherein the seal (72) is an O-ring seal.

8. The traditional Chinese medicine detection pipetting device according to claim 1, further comprising a mounting seat (8), wherein the mounting seat (8) is arranged at the upper end of the cylinder (1), and the mounting seat (8) is in threaded connection with the piston rod (3).

9. Traditional Chinese medicine detection pipetting device according to claim 3, characterized in that the inner side wall of the pipette (2) is provided with a groove (9) adapted to the snap-in member (63).

10. The traditional Chinese medicine detection pipetting device according to claim 1, wherein the lower end of the barrel (1) is further provided with a sheath (10), and a gap is formed between the inner side wall of the sheath (10) and the outer side wall of the connector (4).

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