CN113751093A

CN113751093A - Pipette that practicality is high

Info

Publication number: CN113751093A
Application number: CN202111167037.XA
Authority: CN
Inventors: 刘子贤; 袁义勇; 杨署; 刘刚; 赵华; 孙爱泽
Original assignee: Meidong Huicheng Life Technology Kunshan Co ltd
Current assignee: Meidong Huicheng Life Technology Kunshan Co ltd
Priority date: 2021-10-01
Filing date: 2021-10-01
Publication date: 2021-12-07

Abstract

The invention relates to a pipette with high practicability, which relates to the technical field of pipettes and comprises a base plate, a pipe body, a needle head, a pipe cover, a fixing mechanism arranged on the base plate, a protection mechanism arranged on the needle head and a pipetting mechanism arranged in the pipe body, wherein the protection mechanism comprises a protection cylinder and an installation plate, the protection cylinder is movably connected with the needle head, the other end of the protection cylinder is connected with the upper part of the installation plate, the other end of the installation plate is connected with the upper part of the base plate, the fixing mechanism comprises a stand column, a sliding ring, a clamping ring and a protection pad, the lower part of the stand column is fixedly connected with the upper part of the base plate, the pipetting mechanism comprises a piston block, a screw rod and an upper filter screen, the piston block is movably connected with the pipe body, the other end of the piston block is connected with the lower part of the screw rod, a first installation hole is arranged at the central position of the upper filter screen, the screw rod is connected with the first installation hole, in the invention, the height of the whole fixing mechanism is changed by the movable connection between the sliding ring and the stand column, the sliding column is movably connected with the sliding rod to change the position between the clamping ring and the pipe body.

Description

Pipette that practicality is high

Technical Field

The invention relates to the technical field of pipettes, in particular to a pipette with high practicability.

Background

The pipette is a measuring device for accurately transferring a certain volume of solution, belongs to a measuring instrument, is only used for measuring the volume of the solution discharged by the pipette, is shaped like a slender glass tube with a swelling part in the middle, the lower end of the slender glass tube is in a sharp mouth shape, a marked line is engraved at the neck part of the upper end of the slender glass tube, and is a mark for obtaining the accurate volume, the commonly used pipettes have the specifications of 5, 10, 25, 50 and 75(mL), the straight glass tube with scales is commonly called a pipette, the commonly used pipettes have the specifications of 1, 2, 5 and 10(mL), and the volumes transferred by the pipettes and the pipettes can be generally accurate to 0.01 mL.

The pipette is used by selecting a pipette with a proper specification according to the volume of a moved solution and requirements, the pipette is generally used for accurately moving the solution in titration analysis, the pipette is generally used when the addition amount of a test solution needs to be controlled in a reaction, the pipe orifice and the tip of the pipette need to be checked before the use process to be damaged, the pipette cannot be used if the pipette is damaged, and after the use process is finished, the pipette needs to be cleaned and then placed on a specified clamp.

The prior pipette has the problems that a tube body is lack of a necessary fixing mechanism, a needle head is lack of an anti-pollution protection mechanism, the liquid suction mode is single and the like, and therefore the pipette with high practicability is provided.

Disclosure of Invention

The invention mainly aims to provide a pipette with high practicability, which can effectively solve the problems that a tube body is lack of a necessary fixing mechanism, a needle head is lack of an anti-pollution protection mechanism, a liquid suction mode is single and the like in the background technology.

In order to solve the technical problems, the invention is realized by the following technical scheme: a pipette with high practicability comprises a chassis, a tube body, a needle head, a tube cover, a fixing mechanism arranged on the chassis, a protection mechanism arranged on the needle head and a pipetting mechanism arranged in the tube body, wherein the tube body and the tube cover are of cylindrical structures and are hollow inside, the protection mechanism comprises a protection cylinder and a mounting disc, the protection cylinder is movably connected with the needle head, the other end of the protection cylinder is connected with the upper part of the mounting disc, the other end of the mounting disc is connected with the upper part of the chassis, the fixing mechanism comprises a stand column, a sliding ring, a clamping ring and a protection pad, the lower part of the stand column is fixedly connected with the upper part of the chassis, the other end of the stand column is movably connected with the sliding ring, the two protection pads are respectively arranged between the two clamping rings and the outer side wall of the tube body and are symmetrically arranged along the tube body, the pipetting mechanism comprises a piston block, a screw rod and an upper filter screen, and the piston block is movably connected with the tube body, the piston block other end is connected with the hob below, go up filter screen central point and put and be equipped with first mounting hole, the hob is connected with first mounting hole, go up filter screen and body swing joint, tube cap central point puts and is equipped with rotatory hole, hob and rotatory hole swing joint.

Preferably, the body still includes first solid fixed ring, first cassette, the solid fixed ring of second, second cassette and calibrated scale, the body lateral wall is all located with the solid fixed ring of second to first solid fixed ring, just first solid fixed ring is located the solid fixed ring below of second, four first fixed ring lateral wall is all located to first cassette, and is the partition circumference along first solid fixed ring and arranges, four the second fixed ring lateral wall is all located to the second cassette, and is the partition circumference along the solid fixed ring of second and arranges, the body lateral wall is located to the calibrated scale, and is located the one side of keeping away from the stand, and the inside liquid content of body can be shown in real time to the calibrated scale.

Preferably, the syringe needle still includes cylinder, first mount pad, first card post and filter screen down, the cylinder below is connected with the syringe needle top, filter screen and cylinder fixed connection down, and set up inside the cylinder, four cylinder lateral wall is all located to first mount pad, and is the partition circumference arrangement along the cylinder, four first mount pad top, four are located respectively to first card post the first card post other end respectively with four first cassette swing joint, the filter screen can prevent that gas and liquid from getting into the body from the syringe needle lower part and polluting the container down.

Preferably, the tube cap includes second mount pad, second card post and sealing ring, four the second mount pad all locates the tube cap lateral wall, and is the partition circumference along the tube cap and arranges, four the second card post is located four second mount pad belows respectively, four the second card post other end respectively with four second cassette swing joint, the sealing ring is located between body and the tube cap, the leakproofness between body and the tube cap can be strengthened to the sealing ring.

Preferably, protection mechanism still includes the sleeve, the sleeve is cylindric structure, and is inside cavity, the mounting disc top is located to the sleeve, the sleeve other end and syringe needle swing joint, a sleeve protection section of thick bamboo, a protection section of thick bamboo protection syringe needle do not receive the pollution.

Preferably, fixed establishment still includes traveller, slide bar, card frame and spring, the traveller locates the slip ring lateral wall, the traveller other end and slide bar swing joint, the slide bar other end is connected with card frame lateral wall, two the spring is located respectively between two clamp rings and the card frame, and sets up along the body symmetry, and the spring carries out elastic adjustment to the centre gripping of clamp ring.

Preferably, liquid-transfering mechanism still includes revolving rack and imbibition subassembly, the spiral pole lateral wall is located to the revolving rack, and is located the one side of keeping away from the piston piece, the imbibition subassembly sets up inside the spiral pole, rotates the revolving rack and can drive the spiral pole and the tube cap is rotatory, and then changes the position of piston piece in the body is inside.

Preferably, the imbibition subassembly includes imbibition gasbag, connecting pipe and presses the gasbag, the inside central point of hob puts and is equipped with the second mounting hole, the connecting pipe is connected with the mounting hole, the connecting pipe is located the imbibition gasbag and is pressed between the gasbag, the imbibition gasbag is located inside the body, presses the gasbag and can drive the imbibition gasbag and change the inside pressure of body and carry out the imbibition and handle.

The invention has the following beneficial effects:

1. according to the invention, the height of the whole fixing mechanism is changed by movably connecting the slip ring with the stand column, the position between the clamping ring and the pipe body is changed by movably connecting the slip column with the slide rod, the clamping ring is contacted with the outer side wall of the pipe body to clamp the pipe body, the friction of the clamping ring on the outer side wall of the pipe body can be reduced by the protection pad, the spring elastically adjusts the clamping process, the stable and convenient clamping of the pipe body is ensured, and the overall practicability of the pipette is enhanced;

2. in the invention, the needle is exposed outside after imbibing liquid and is easy to be polluted, so that the needle is protected by the protection barrel, and the upper half part of the needle is additionally protected by the external sleeve on the protection barrel, thereby realizing the omnibearing protection of the needle;

3. according to the invention, the rotating frame is rotated to drive the screw rod and the pipe cover to rotate, so that the position of the piston block in the pipe body is changed, the pressure below the piston block in the pipe body is changed to perform liquid suction treatment, meanwhile, the pressing air bag is pressed, the pressing effect is transmitted into the liquid suction air bag through the connecting pipe, the shape of the liquid suction air bag is changed to change the pressure in the pipe body, liquid suction treatment is performed, two liquid suction modes are jointly used, and the practicability is enhanced for different liquids.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

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

Fig. 1 is a schematic diagram of the overall structure of a highly practical pipette of the present invention;

FIG. 2 is a schematic front view of a highly useful pipette of the present invention;

FIG. 3 is a schematic top view of a highly useful pipette of the present invention;

FIG. 4 is a schematic cross-sectional view taken along line A-A of FIG. 2 according to the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4 at B according to the present invention;

fig. 6 is a partially enlarged view of the structure at C in fig. 4 according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a chassis; 2. a pipe body; 3. a first retaining ring; 4. a first card holder; 5. a second retaining ring; 6. a second card holder; 7. a needle cylinder; 8. a first mounting seat; 9. a first clamp post; 10. a needle head; 11. a lower filter screen; 12. a tube cover; 13. a second mounting seat; 14. a second clamping column; 15. a seal ring; 16. a piston block; 17. a screw rod; 18. rotating the frame; 19. a filter screen is arranged; 20. a liquid suction air bag; 21. a connecting pipe; 22. pressing the air bag; 23. a protective cylinder; 24. a sleeve; 25. mounting a disc; 26. a dial scale; 27. a column; 28. a slip ring; 29. a traveler; 30. a slide bar; 31. a clamping frame; 32. a spring; 33. a clamping ring; 34. and (6) a protective pad.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-6, the invention is a pipette with high practicability, comprising a chassis 1, a tube 2, a needle 10, a tube cover 12, a fixing mechanism arranged on the chassis 1, a protection mechanism arranged on the needle 10, and a pipetting mechanism arranged inside the tube 2, wherein the tube 2 and the tube cover 12 are both cylindrical structures and are hollow inside, the protection mechanism comprises a protection cylinder 23 and a mounting plate 25, the protection cylinder 23 is movably connected with the needle 10, the other end of the protection cylinder 23 is connected with the upper part of the mounting plate 25, the other end of the mounting plate 25 is connected with the upper part of the chassis 1, the fixing mechanism comprises a vertical column 27, a sliding ring 28, a clamping ring 33 and a protection pad 34, the lower part of the vertical column 27 is fixedly connected with the upper part of the chassis 1, the other end of the vertical column 27 is movably connected with the sliding ring 28, the two protection pads 34 are respectively arranged between the two clamping rings 33 and the outer side wall of the tube 2 and are symmetrically arranged along the tube 2, the liquid-transfering mechanism comprises a piston block 16, a screw rod 17 and an upper filter screen 19, the piston block 16 is movably connected with the tube body 2, the other end of the piston block 16 is connected with the lower portion of the screw rod 17, a first mounting hole is formed in the center of the upper filter screen 19, the screw rod 17 is connected with the first mounting hole, the upper filter screen 19 is movably connected with the tube body 2, a rotating hole is formed in the center of the tube cover 12, and the screw rod 17 is movably connected with the rotating hole.

Further, body 2 still includes first solid fixed ring 3, first cassette 4, the solid fixed ring 5 of second, second cassette 6 and calibrated scale 26, the 2 lateral walls of body are all located with the solid fixed ring 5 of second to first solid fixed ring 3, and first solid fixed ring 3 is located the solid fixed ring 5 below of second, the 3 lateral walls of first solid fixed ring are all located to four first cassettes 4, and be the partition circumference arrangement along first solid fixed ring 3, the solid fixed ring 5 lateral walls of second are all located to four second cassettes 6, and be the partition circumference arrangement along the solid fixed ring 5 of second, the 2 lateral walls of body are located to calibrated scale 26, and be located the one side of keeping away from stand 27, calibrated scale 26 can show the inside liquid content of body 2 in real time.

Further, syringe needle 10 still includes cylinder 7, first mount pad 8, first card post 9 and lower filter screen 11, cylinder 7 below is connected with syringe needle 10 top, lower filter screen 11 and cylinder 7 fixed connection, and set up inside

cylinder

7, 7 lateral walls of cylinder are all located to four first mount pads 8, and be the partition circumference arrangement along cylinder 7, four first card posts 9 are located four first mount pad 8 tops respectively, four first card post 9 other ends respectively with four first cassette 4 swing joint, filter screen 11 can prevent down that gas and liquid from getting into body 2 from syringe needle 10 lower part and polluting the container.

Further, the tube cap 12 includes second mount pad 13, second card post 14 and sealing

ring

15, 12 lateral walls of tube cap are all located to four second mount pads 13, and be the partition circumference along tube cap 12 and arrange, four second card posts 14 are located four second mount pads 13 below respectively, four second card posts 14 other ends respectively with four second cassette 6 swing joint, sealing ring 15 is located between body 2 and tube cap 12, sealing ring 15 can strengthen the leakproofness between body 2 and the tube cap 12.

Further, the protection mechanism further comprises a sleeve 24, the sleeve 24 is of a cylindrical structure and is hollow inside, the sleeve 24 is arranged above the mounting disc 25, the other end of the sleeve 24 is movably connected with the needle 10, the sleeve 24 protects the protection cylinder 23, and the protection cylinder 23 protects the needle 10 from being polluted.

Further, the fixing mechanism further comprises a sliding column 29, a sliding rod 30, a clamping frame 31 and springs 32, the sliding column 29 is arranged on the side wall of the sliding ring 28, the other end of the sliding column 29 is movably connected with the sliding rod 30, the other end of the sliding rod 30 is connected with the side wall of the clamping frame 31, the two springs 32 are respectively arranged between the two clamping rings 33 and the clamping frame 31 and symmetrically arranged along the pipe body 2, and the springs 32 elastically adjust the clamping of the clamping rings 33.

Further, the liquid-transfering mechanism still includes revolving rack 18 and imbibition subassembly, and revolving rack 18 locates the hob 17 lateral wall, and is located the one side of keeping away from piston block 16, and the imbibition subassembly sets up inside hob 17, rotates revolving rack 18 and can drive hob 17 and tube cap 12 rotatory, and then changes piston block 16 in the inside position of body 2.

Further, imbibition subassembly includes imbibition gasbag 20, connecting pipe 21 and presses gasbag 22, and the inside central point of hob 17 puts and is equipped with the second mounting hole, and connecting pipe 21 is connected with the mounting hole, and connecting pipe 21 is located imbibition gasbag 20 and is pressed between the gasbag 22, and imbibition gasbag 20 is located body 2 inside, presses gasbag 22 and can drive imbibition gasbag 20 and change the inside pressure of body 2 and carry out imbibition processing.

The working principle of the invention is as follows: the upper filter screen 19 and the lower filter screen 11 can prevent gas and liquid from entering the tube body 2 to pollute the container, the needle 10 is exposed after imbibing liquid and is easy to pollute, the protective cylinder 23 can protect the needle, the outer sleeve 24 protects the protective cylinder 23 and additionally protects the upper half part of the needle 10, so that the needle 10 is protected in all directions, the installation disc 25 can facilitate the vertical and stable placement of the tube body 2, the sliding ring 28 and the upright post 27 are movably connected to change the height of the whole fixing mechanism, the sliding post 29 and the sliding rod 30 are movably connected to change the position between the clamping ring 33 and the tube body 2, the clamping ring 33 is contacted with the outer side wall of the tube body 2 to clamp the tube body 2, the tube pad 34 can reduce the friction of the outer side wall of the tube body 33, the spring 32 performs elastic adjustment on the clamping process, and ensures the stable and convenient clamping of the tube body 2, imbibition in-process, rotate revolving rack 18, it is rotatory between drive hob 17 and the tube cap 12, and then change the position of piston block 16 in body 2 inside, and then change the body 2 inside pressure that is located piston block 16 below and carry out the imbibition processing, or, press and press gasbag 22, will press the effect through connecting pipe 21 and transmit to imbibition gasbag 20 in, imbibition gasbag 20 changes the shape and changes the body 2 inside pressure, carry out the imbibition processing, two kinds of imbibition modes use jointly, to different liquids, the practicality has been strengthened.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A pipette with high practicability is characterized in that: comprises a chassis (1), a tube body (2), a needle head (10), a tube cover (12), a fixing mechanism arranged on the chassis (1), a protection mechanism arranged on the needle head (10) and a liquid transfer mechanism arranged in the tube body (2), wherein the tube body (2) and the tube cover (12) are both of cylindrical structures and are hollow inside, the protection mechanism comprises a protection cylinder (23) and a mounting disc (25), the protection cylinder (23) is movably connected with the needle head (10), the other end of the protection cylinder (23) is connected with the upper part of the mounting disc (25), the other end of the mounting disc (25) is connected with the upper part of the chassis (1), the fixing mechanism comprises a stand column (27), a sliding ring (28), a clamping ring (33) and a protection pad (34), the lower part of the stand column (27) is fixedly connected with the upper part of the chassis (1), and the other end of the stand column (27) is movably connected with the sliding ring (28), two between two clamp ring (33) and body (2) lateral walls are located respectively to protection pad (34), and set up along body (2) symmetry, move liquid mechanism and include piston block (16), hob (17) and go up filter screen (19), piston block (16) and body (2) swing joint, the piston block (16) other end is connected with hob (17) below, it is equipped with first mounting hole to go up filter screen (19) central point and put, hob (17) and first mounting hole are connected, go up filter screen (19) and body (2) swing joint, tube cap (12) central point puts and is equipped with rotatory hole, hob (17) and rotatory hole swing joint.

2. A highly practical pipette as claimed in claim 1, characterised in that: the pipe body (2) further comprises a first fixing ring (3), a first clamping seat (4), a second fixing ring (5), a second clamping seat (6) and a dial scale (26), the outer side wall of the pipe body (2) is arranged on the first fixing ring (3) and the second fixing ring (5), the first fixing ring (3) is located below the second fixing ring (5), the first clamping seat (4) is arranged on the side wall of the first fixing ring (3) and is arranged along the circumference of the first fixing ring (3), the second clamping seat (6) is arranged on the side wall of the second fixing ring (5) and is arranged along the circumference of the second fixing ring (5), and the dial scale (26) is arranged on the outer side wall of the pipe body (2) and is located on one side away from the stand column (27).

3. A highly practical pipette as claimed in claim 2, characterised in that: syringe needle (10) still include cylinder (7), first mount pad (8), first card post (9) and filter screen (11) down, cylinder (7) below is connected with syringe needle (10) top, filter screen (11) and cylinder (7) fixed connection down, and set up inside cylinder (7), four cylinder (7) lateral wall is all located in first mount pad (8), and is the partition circumference along cylinder (7) and arranges, four first mount pad (8) top, four are located respectively to first card post (9) the other end respectively with four first cassette (4) swing joint.

4. A highly practical pipette as claimed in claim 3 wherein: the pipe cover (12) comprises second mounting seats (13), second clamping columns (14) and sealing rings (15), the second mounting seats (13) are arranged on the outer side wall of the pipe cover (12) and are arranged along the pipe cover (12) in an equally-divided circumferential mode, the second clamping columns (14) are arranged below the four second mounting seats (13) respectively, the second clamping columns (14) are four in number, the other ends of the second clamping columns (14) are movably connected with the four second clamping seats (6) respectively, and the sealing rings (15) are arranged between the pipe body (2) and the pipe cover (12).

5. A highly useful pipette as set forth in claim 4 wherein: protection mechanism still includes sleeve (24), sleeve (24) are cylindric structure, and are inside cavity, mounting disc (25) top is located in sleeve (24), the sleeve (24) other end and syringe needle (10) swing joint.

6. A highly useful pipette as set forth in claim 5 wherein: the fixing mechanism further comprises a sliding column (29), a sliding rod (30), a clamping frame (31) and springs (32), the sliding column (29) is arranged on the side wall of the sliding ring (28), the other end of the sliding column (29) is movably connected with the sliding rod (30), the other end of the sliding rod (30) is connected with the side wall of the clamping frame (31), and the springs (32) are respectively arranged between the two clamping rings (33) and the clamping frame (31) and are symmetrically arranged along the pipe body (2).

7. A highly useful pipette as set forth in claim 6 wherein: the liquid transfer mechanism further comprises a rotating frame (18) and a liquid suction assembly, the rotating frame (18) is arranged on the side wall of the screw rod (17) and located on one side far away from the piston block (16), and the liquid suction assembly is arranged inside the screw rod (17).

8. A highly practical pipette as claimed in claim 7 wherein: imbibition subassembly includes imbibition gasbag (20), connecting pipe (21) and presses gasbag (22), the inside central point of hob (17) puts and is equipped with the second mounting hole, connecting pipe (21) are connected with the mounting hole, connecting pipe (21) are located imbibition gasbag (20) and are pressed between gasbag (22), imbibition gasbag (20) are located inside body (2).