CN215029029U - Detachable pipette that uses among water quality testing process - Google Patents

Abstract

The utility model discloses a detachable pipette used in the water quality detection process, which comprises a pipe body with openings at two ends; the other end of the tube body is connected with a pipette; a limiting plate is fixedly arranged in the tube body, a through hole is formed in the center of the limiting plate, and the through hole is communicated with the pipette; a sliding groove is formed in the side wall of the pipe body above the limiting plate along the length direction of the pipe body; an L-shaped connecting rod is movably arranged in the pipe body above the limiting plate, a piston is arranged at one end of the connecting rod, and the other end of the connecting rod penetrates through the sliding groove and is located on the outer side of the pipe body. The utility model has the advantages that: the utility model has simple structure and easy realization; the operation is convenient and simple, the misoperation is not easy to occur, and a large amount of experiment time is saved; meanwhile, the speed of the push handle can be controlled to realize accurate liquid suction, so that the liquid amount sucked into the pipette is accurate; the damage of the solution to the pipe body is avoided; the replacement is convenient and simple, and the accuracy of the subsequent experimental result is ensured.

Description

Detachable pipette that uses among water quality testing process

The technical field is as follows:

the utility model relates to a pipette, in particular to detachable pipette that uses among water quality testing process.

Background art:

with the increasing of the environmental governance, the requirements on the frequency and the standard of environmental detection are higher and higher. The detection of the water quality of the polluted water body is an important aspect of environmental detection. When various indexes of the polluted water body are detected, a pipette is usually used. Pipettes are commonly used measuring instruments for measuring the volume of solution discharged; the pipette is a slender glass tube, and the lower end of the pipette is in a sharp mouth shape; the volume moved by the pipette can be usually accurate to 0.01mL, and is an essential measuring tool for detecting various indexes of a polluted water body; at present, in the process of measuring liquid by a pipette, the liquid is required to be matched with an aurilave for use, the requirement on the operation proficiency of a laboratory technician is high, and especially, when a plurality of samples are moved, the operation errors caused by finger fatigue are easy to occur, so that the precision and the progress of the whole experiment are influenced; and the solution is easy to be absorbed into the aurilave in the measuring process, which is not only harmful to the aurilave, but also pollutes the solution.

The utility model has the following contents:

an object of the utility model is to provide a simple structure saves a large amount of experimental time, and gets the detachable pipette that uses among the accurate water quality testing process of volume.

The utility model discloses by following technical scheme implement: the detachable pipette comprises a pipe body with openings at two ends, wherein a cover body is connected to one end of the pipe body in a threaded manner; the other end of the tube body is connected with a pipette, and the side wall of the pipette is provided with scales; a limiting plate is fixedly arranged in the tube body, a through hole is formed in the center of the limiting plate, the upper end of the pipette is abutted against the limiting plate, and the through hole is communicated with the pipette; a sliding groove is formed in the side wall of the pipe body above the limiting plate and is arranged along the length direction of the pipe body; an L-shaped connecting rod is movably arranged in the pipe body above the limiting plate, a piston is arranged at one end of the connecting rod, and the other end of the connecting rod penetrates through the sliding groove and is positioned outside the pipe body; the piston moves in the pipe body between the bottom end of the sliding chute and the limiting plate.

Furthermore, at least two L-shaped clamping grooves are arranged at the upper end of the pipette; a clamping block matched with the clamping groove is arranged at one end of the pipe body connected with the pipette; the clamping block slides along the vertical section of the clamping groove and is movably clamped at the horizontal section of the clamping groove.

Further, a sealing ring is arranged between the limiting plate and the pipette; the upper end of the pipette is abutted against the sealing ring.

Furthermore, a push handle is fixed at one end of the connecting rod, which is positioned outside the pipe body; the other side of the pipe body, which is provided with the sliding groove, is integrally formed with a horizontal groove.

The utility model has the advantages that: 1. the utility model has simple structure and easy realization; the up-and-down movement of the piston is realized by pushing the push handle up and down, so that the liquid suction and discharge of the pipette are realized, and compared with the liquid suction and discharge process of the conventional pipette, the liquid suction and discharge device is convenient and simple to operate, is not easy to cause misoperation, and saves a large amount of experimental time; meanwhile, the speed of the push handle can be controlled to realize accurate liquid suction, so that the liquid amount sucked into the pipette is accurate; 2. meanwhile, the solution is not sucked into the tube body, so that the tube body is prevented from being damaged by the solution; 3. the pipette can be directly dismantled from the body and get off, changes, and it is convenient simple to change, conveniently is used for moving of different solutions to get, has avoided mutual pollution between the solution, has guaranteed the accuracy of follow-up experimental result.

Description of the drawings:

in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural diagram of the pipette of the present invention.

The liquid suction pipe comprises a pipe body 1, a sliding groove 101, a cover body 2, a pipette 3, a clamping groove 301, scales 4, a limiting plate 5, a through hole 501, a sealing ring 6, a connecting rod 7, a piston 8, a clamping block 9, a push handle 10 and a horizontal hand groove 11.

The specific implementation mode is as follows:

as shown in fig. 1-2, a detachable pipette used in a water quality detection process includes a tube body 1 with openings at both ends, and a cover body 2 connected to one end of the tube body 1 by a screw thread; the other end of the tube body 1 is connected with a pipette 3, and the side wall of the pipette 3 is provided with scales 4 for measuring solution; a limiting plate 5 is fixedly arranged in the tube body 1, a through hole 501 is formed in the center of the limiting plate 5, and a sealing ring 6 is arranged between the limiting plate 5 and the pipette 3; the upper end of the pipette 3 is abutted against the sealing ring 6, and the through hole 501 is communicated with the pipette 3; a sliding groove 101 is formed in the side wall of the pipe body 1 above the limiting plate 5 along the length direction of the pipe body 1; an L-shaped connecting rod 7 is movably arranged in the pipe body 1 above the limiting plate 5, one end of the connecting rod 7 is provided with a piston 8, and the other end of the connecting rod 7 penetrates through the sliding groove 101 and is positioned outside the pipe body 1; the piston 8 moves in the pipe body 1 between the bottom end of the sliding chute 101 and the limiting plate 5.

At least two L-shaped clamping grooves 301 are arranged at the upper end of the pipette 3; a clamping block 9 matched with the clamping groove 301 is arranged at one end of the pipe body 1 connected with the pipette 3; the clamping block 9 slides along the vertical section of the clamping groove 301 and is movably clamped on the horizontal section of the clamping groove 301; a push handle 10 is fixed at one end of the connecting rod 7 positioned outside the tube body 1; the other side of the pipe body 1 provided with the sliding groove 101 is integrally formed with a horizontal hand groove 11, so that the pipe body is convenient for holding by an experimenter.

The working process is as follows: pushing the upper end of the pipette 3 upwards along the fixture block 9 until the pipette 3 abuts against the sealing ring 6, and rotating the pipette 3 to enable the fixture block 9 to be clamped in the horizontal section of the clamping groove 301; then, the tube body 1 is held by hand, a thumb presses on the push handle 10, the pipette 3 is moved, the lower end of the pipette is placed in the solution to be moved, then the push handle 10 is pushed upwards and slowly to suck the solution into the pipette 3, an experimenter observes the height of the liquid level constantly, after the certain height is reached, the push handle 10 is stopped, the lower end of the pipette 3 is taken out of the solution, then the tube body 1 is held by hand to the position where the solution is needed, the thumb pushes the push handle 10 downwards to discharge the solution in the pipette 3, the pipetting process is completed, the operation is convenient and simple, misoperation is not easy to occur, and a large amount of experimental time is saved; meanwhile, the liquid can be accurately absorbed by controlling the speed of the push handle 10, so that the liquid amount absorbed into the pipette 3 is accurate, and meanwhile, the situation that the solution is absorbed into the tube body 1 cannot occur, and the solution is prevented from damaging the tube body 1.

When needs are used for moving other solutions, can rotate pipette 3, make fixture block 9 move to in the vertical section of draw-in groove 301 to the vertical section of roll-off draw-in groove 301 realizes the dismantlement to pipette 3, then installs new pipette 3, and it is convenient simple to change, conveniently is used for moving of different solutions to get, has avoided mutual pollution between the solution, has guaranteed the accuracy of follow-up experimental result.

After long-time use, can twist off lid 2 from body 1, then push away and push away handle 10, take out piston 8, change new piston 8 to also can clear up 1 insides of body, the utility model discloses simple structure easily realizes.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. A detachable pipette used in a water quality detection process is characterized by comprising a tube body with openings at two ends, wherein one end of the tube body is in threaded connection with a cover body; the other end of the tube body is connected with a pipette, and the side wall of the pipette is provided with scales;

a limiting plate is fixedly arranged in the tube body, a through hole is formed in the center of the limiting plate, the upper end of the pipette is abutted against the limiting plate, and the through hole is communicated with the pipette;

a sliding groove is formed in the side wall of the pipe body above the limiting plate and is arranged along the length direction of the pipe body;

an L-shaped connecting rod is movably arranged in the pipe body above the limiting plate, a piston is arranged at one end of the connecting rod, and the other end of the connecting rod penetrates through the sliding groove and is positioned outside the pipe body; the piston moves in the pipe body between the bottom end of the sliding chute and the limiting plate.

2. The detachable pipette used in the water quality detection process according to claim 1, wherein at least two L-shaped clamping grooves are arranged at the upper end of the pipette; a clamping block matched with the clamping groove is arranged at one end of the pipe body connected with the pipette; the clamping block slides along the vertical section of the clamping groove and is movably clamped at the horizontal section of the clamping groove.

3. The detachable pipette used in the water quality detection process according to claim 1 or 2, wherein a sealing ring is arranged between the limiting plate and the pipette; the upper end of the pipette is abutted against the sealing ring.

4. The detachable pipette used in the water quality detection process according to claim 1 or 2, wherein a push handle is fixed at one end of the connecting rod, which is positioned outside the tube body; the other side of the pipe body, which is provided with the sliding groove, is integrally formed with a horizontal groove.

5. The detachable pipette used in the water quality detection process according to claim 3, wherein a push handle is fixed at one end of the connecting rod, which is positioned outside the tube body; the other side of the pipe body, which is provided with the sliding groove, is integrally formed with a horizontal groove.

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