CN216458928U

CN216458928U - Microflow liquid conveying device

Info

Publication number: CN216458928U
Application number: CN202122772924.1U
Authority: CN
Inventors: 吴刚
Original assignee: Maiana Shanghai Instrument Technology Co ltd
Current assignee: Maiana Shanghai Instrument Technology Co ltd
Priority date: 2021-11-12
Filing date: 2021-11-12
Publication date: 2022-05-10
Anticipated expiration: 2031-11-12

Abstract

The utility model discloses a microflow liquid conveying device, which comprises a support main body and at least one liquid conveying pipe; the support main body is provided with at least one through liquid feeding hole; the liquid sending pipe is contained in the liquid sending hole and comprises a solution cylinder and a push-pull rod, the solution cylinder is provided with a solution cavity with two open ends, raw material liquid is contained in the solution cavity, the push-pull rod extends into one end of the solution cavity and is contained in the solution cavity, and the push-pull rod can push the raw material liquid into a target container. The small-volume liquid delivery pipe is convenient for accurately controlling the flow, speed or proportion of liquid delivery, and achieves the aim of accurately preparing a target product by micro-fluidic control; liquid conveying pipes with different volume specifications can be configured, and the use is flexible; the liquid feeding holes can be integrally designed or separately designed, so that the liquid feeding pipe can be firmly buckled, and the liquid feeding pipe can be conveniently taken out and placed.

Description

Microflow liquid conveying device

Technical Field

The utility model relates to the field of liquid conveying, in particular to a micro-flow liquid conveying device.

Background

The micro-fluidic is a technology capable of accurately controlling micro-scale fluid, particularly for micro-and submicron structures, the current micro-fluidic experimental preparation is usually completed by means of a micro-fluidic chip box, raw material liquid is conveyed to the micro-fluidic chip box, a liquid conveying device of the raw material liquid cannot be separated, and the raw material liquid can be conveyed to the micro-fluidic chip box under the conditions of micro volume, control of flow speed, proportion and the like of the raw material liquid. Not only is the raw material liquid convenient to take out and place, but also the raw material liquid of different volume specifications can be adapted to, and the microflow liquid conveying device is convenient to operate.

Therefore, aiming at the technical characteristics, the patent provides a new technical scheme.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems in the prior art, the utility model provides a micro-flow liquid conveying device which is simple in structure, convenient to use and operate, and the specific technical scheme is as follows:

a microfluidic liquid delivery device comprises a support body and at least one liquid delivery tube;

the support main body is provided with at least one through liquid feeding hole;

the liquid sending pipe is contained in the liquid sending hole and comprises a solution cylinder and a push-pull rod, the solution cylinder is provided with a solution cavity with two open ends, raw material liquid is contained in the solution cavity, the push-pull rod extends into one end of the solution cavity and is contained in the solution cavity, and the push-pull rod can push the raw material liquid into a target container.

As a preferable scheme of the liquid receiving device, the liquid receiving device further comprises a pipe sleeve; the liquid sending pipe can be accommodated in the liquid sending hole through the pipe sleeve.

As a preferable solution of the liquid receiving device of this patent, the supporting body includes a moving part and a fixed part, the moving part is rotatably connected with the fixed part, and the moving part can rotate around the fixed part;

the movable part is provided with a first arc-shaped part, the fixed part is provided with a second arc-shaped part, and the first arc-shaped part and the second arc-shaped part surround to form a liquid conveying hole.

As a preferable mode of the liquid receiving device of this patent, the first arc-shaped portion includes an arc-shaped section and a circular section along the axial direction, the arc-shaped section is located at an end of the liquid feeding hole away from the target container, and the second arc-shaped portion is matched with the arc-shaped section.

As a preferred scheme of the liquid receiving device, the arc included angle range of the arc-shaped section is 180-360 degrees, and the arc-shaped section can prevent the liquid sending pipe from loosening or falling from the liquid sending hole.

As a preferred embodiment of the liquid receiving device of this patent, the pipe sleeve is a hollow pipe with openings at both ends, the liquid sending pipe is buckled in the liquid sending hole through the pipe sleeve, one end of the outside of the pipe sleeve is sleeved with a limit ring, the pipe sleeve is accommodated in the liquid sending hole, and the limit ring is abutted against the orifice of the liquid sending hole.

As a preferable scheme of the liquid receiving device, the outer diameter of the pipe sleeve is consistent with the outer diameter of the liquid sending hole, and the inner diameter of the pipe sleeve is consistent with the outer diameter of the liquid sending pipe;

the length of the pipe sleeve is not more than that of the liquid feeding hole;

one end of the liquid feeding hole close to the limiting ring is provided with a limiting ring groove matched with the limiting ring, and the limiting ring is accommodated in the limiting ring groove.

As a preferable scheme of the liquid receiving device, the liquid sending pipe contains the raw material liquid with the volume range of 0.5ml to 20 ml;

as a preferable scheme of the liquid receiving device disclosed by the patent, the included angle of the arc-shaped section ranges from 180 degrees to 270 degrees.

As a preferable scheme of the liquid receiving device, the liquid sending tube contains raw material liquid with the volume including 0.5ml, 1ml, 2ml, 3ml, 5ml, 7ml, 8ml, 10ml, 12ml, 15ml, 18ml and 20 ml.

Compared with the prior art, the micro-flow liquid conveying device at least has one or more of the following beneficial effects:

(1) this patent miniflow send liquid device, its little volume liquid sending pipe sets up the liquid sending head that the internal diameter is littleer for experiment or small batch production research and development operation, little volume raw materials liquid conveyor, the accurate control of being convenient for send flow, speed or the proportion of liquid, reach the purpose of the accurate preparation target product of miniflow control.

(2) This patent miniflow send liquid device, it sets up the pipe box, is convenient for dispose the liquid sending pipe of different volume specifications, including using the medical syringe that does not contain the syringe needle to reduce cost, nimble use also is convenient for select in a flexible way and set up raw materials liquid delivery condition.

(3) This patent miniflow send liquid device, it sets up first arc portion and second arc portion, second arc portion is rotatable, is convenient for place and take out liquid sending pipe, and second arc portion has the circle segment and the arc contained angle that firmly fix liquid sending pipe and is greater than 180 segmental arcs for the segmental arc also can firmly buckle liquid sending pipe and/or pipe box, prevents that its pine from taking off or dropping, reaches both conveniently to take out and place liquid sending pipe, can firmly buckle liquid sending pipe's purpose again.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed for the description of the embodiments or the prior art will be briefly described 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 to obtain other drawings without creative efforts.

FIG. 1 is a schematic perspective view of one embodiment of a microfluidic device according to the present disclosure;

FIG. 2 is a schematic front view of an embodiment of a microfluidic device according to the present disclosure;

FIG. 3 is a perspective view of another embodiment of a microfluidic device according to the present disclosure;

FIG. 4 is a schematic perspective view of another embodiment of a microfluidic device according to the present disclosure;

FIG. 5 is a schematic sectional view taken along line A-A of FIG. 4;

FIG. 6 is a schematic perspective view of another embodiment of a microfluidic device according to the present disclosure in an inverted state;

FIG. 7 is a schematic view of the cross-section B of FIG. 6;

FIG. 8 is a schematic view of an exploded structure of the pipette of this patent;

FIG. 9 is a perspective view of the liquid receiving tube of the present patent;

FIG. 10 is a perspective view of a tube sleeve according to the present disclosure;

figure 11 is a perspective view of another perspective of the pipe sleeve of the present patent.

The microfluidic chip box comprises a microfluidic chip box body 2, a liquid inlet 212, a support main body 3, a liquid sending pipe 31, a liquid sending hole 32, a pipe sleeve 33, a moving part 301, a fixing part 302, a solution cylinder 311, a solution cavity 3111, a liquid sending head 3112, a push-pull rod 312, a first arc part 321, a second arc part 322, an arc segment 3211, a circular segment 3212, a limiting ring groove 3213, a limiting ring 331 and an arc groove 3311.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "one end", "one side", "the other side", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to 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. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "provided," "connected," "disposed," "fixed," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral to; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate medium, and may be specifically understood in the two elements.

Examples

The micro-fluid delivery device of the embodiment is mainly applied to micro-fluid equipment and is used for delivering raw material liquid into a micro-fluid chip box of the micro-fluid equipment according to a certain proportion, quantity and other control requirements and the like so as to prepare micro-fluid mixed liquid. The microfluid equipment comprises an equipment shell, wherein the equipment shell comprises an opening and a containing cavity, a supporting main body 3 is arranged in the containing cavity, a box body groove is formed in the supporting main body 3, the microfluidic chip box 2 is buckled in the box body groove, a microfluidic liquid conveying device is arranged below a liquid inlet 212 of the microfluidic chip box 2, and a liquid receiving device is arranged below a liquid outlet of the microfluidic chip box 2.

The following takes the application to a microfluidic device as an example to explain the technical scheme of the microfluidic device:

referring to fig. 1-11, as shown in fig. 1-11, the microfluidic liquid delivery device includes a support body 3 and at least one liquid delivery tube 31;

the supporting main body 3 is provided with at least one through liquid feeding hole 32, the liquid feeding hole 32 is positioned below the liquid inlet, and one end of the liquid feeding hole 32 is opened towards the liquid inlet; in an example, there are two liquid feeding holes 32, and of course, the liquid feeding holes 32 include but are not limited to two, and one or more liquid feeding holes may be provided according to user requirements, experimental requirements or production requirements. In an example, a limit ring groove 3213 is formed at one end of the liquid feeding hole 32 away from the liquid inlet 212. The liquid feeding holes 32 may be integrally designed, as shown in fig. 1-2, or the liquid feeding holes 32 may be separately designed, as shown in fig. 3-7.

The liquid sending tube 31 is accommodated in the liquid sending hole 32, the liquid sending tubes 31 correspond to the liquid inlets one by one, the liquid sending tube 31 comprises a solution cylinder 311 and a push-pull rod 312, the solution cylinder 311 is provided with a solution cavity 3111 with openings at two ends, raw liquid is accommodated in the solution cavity 3111, the push-pull rod 312 can move in the solution cavity 3111, the push-pull rod 312 extends into the solution cavity 3111 from one end of the solution cavity 3111 and is accommodated in the solution cavity 3111, a hollow liquid sending head 3112 is arranged at one end of the solution cylinder 311 far away from the push-pull rod 312, the inner diameter of the liquid sending head 3112 is smaller than that of the solution cylinder 311, and the push-pull rod 312 can push the raw liquid to pass through the liquid sending head 3112 and the liquid inlets and enter the microfluidic chip cartridge. In an example, the outer diameter of the liquid sending head is larger than the inner diameter of the liquid inlet of the microfluidic chip box, and the inner diameter of the liquid sending head is not larger than the outer diameter of the liquid inlet of the microfluidic chip box.

In one embodiment, as shown in fig. 3 to 7, the liquid feeding hole 32 is separately designed, the supporting body 3 includes a moving portion 301 and a fixing portion 302, the moving portion 301 is rotatably connected to the fixing portion 302 through a rotating shaft, the moving portion 301 can rotate around the rotating shaft, the moving portion 301 is provided with a first arc portion 321, the fixing portion 302 is provided with a second arc portion 322, and the first arc portion 321 and the second arc portion 322 surround to form the liquid feeding hole 32. In the example, the first arc-shaped portion 321 includes an arc-shaped segment 3211 and a circular segment 3212 along the axial direction, the arc-shaped segment 3211 is located at an end of the liquid feeding hole 32 away from the target container, and the second arc-shaped portion 322 is matched with the arc-shaped segment 3211. Preferably, the arc included angle range of the arc segment 3211 is 180 ° -360 °, the arc segment 3211 can prevent the liquid sending pipe 31 from loosening or falling from the liquid sending hole 32, and preferably, the arc included angle range of the arc segment 3211 is 180 ° -270 °, so that the arc included angle range is set, the liquid sending hole 32 can not only buckle the liquid sending pipe 31, but also facilitate taking out and placing the liquid sending pipe 31. In the example, the fixed part is vertical fixed state, and the removal portion 301 can conveniently place or take out when turning over and be close horizontal state the liquid sending pipe 31, after liquid sending pipe 31 placed the completion, removal portion 301 removed to and is inconsistent with fixed part 302, at this moment first arc 321 and second arc 322 surround and form complete liquid sending hole 32, then can press liquid sending pipe 31 automatically or manually, carry raw materials liquid to the inlet according to the needs or the requirement of experiment.

In another embodiment, the microfluidic device further comprises a sleeve 33, as shown in fig. 3, 5 and 10-11;

the pipe sleeve 33 is a hollow pipe with two open ends, the liquid sending pipe 31 is buckled in the liquid sending hole 32 through the pipe sleeve 33, one end outside the pipe sleeve 33 is sleeved with a limiting ring 331, the pipe sleeve 33 is accommodated in the liquid sending hole 32, the limiting ring 331 is contacted with the orifice of the liquid sending hole 32, the outer diameter of the pipe sleeve 33 is consistent with that of the liquid sending hole 32, the inner diameter of the pipe sleeve 33 is consistent with that of the liquid sending pipe 31, and the length of the pipe sleeve 33 is not more than that of the liquid sending hole 32; in the example, the liquid sending tube 31 contains the raw material liquid in a volume range of 0.5ml to 20 ml; the liquid sending pipes 31 with different volume specifications have different outer diameters and inner diameters, so the liquid sending pipes 31 with different volume specifications are provided with the pipe sleeves 33 matched with the liquid sending pipes, the inner diameters of the pipe sleeves 33 with different specifications are different, the outer diameters of the pipe sleeves 33 with different specifications are the same, and the outer diameters of the pipe sleeves 33 with different specifications are consistent with the inner diameters of the liquid sending holes 32. Preferably, the liquid sending tube 31 contains the raw liquid in a volume including, but not limited to, 0.5ml, 1ml, 2ml, 3ml, 5ml, 7ml, 8ml, 10ml, 12ml, 15ml, 18ml and 20 ml. In an example, two arc-shaped grooves 3311 are symmetrically formed in the position-limiting ring 331, the position-limiting ring 331 is matched with the position-limiting ring groove 3213, and the position-limiting ring 331 is accommodated in the position-limiting ring groove 3213. The arc-shaped groove 3311 is provided to make the appearance beautiful and to facilitate the taking out and placing of the liquid sending tube 31. As shown in fig. 1-2, in the integrally designed liquid feeding hole 32, a handle groove is formed in a side wall of the limit ring groove 3213, the pipe sleeve 33 is fastened in the liquid feeding hole 32, the limit ring 331 is accommodated in the limit ring groove 3213, and the handle groove is provided to facilitate the taking out of the pipe sleeve 33 from the handle groove, which is convenient for operation.

The liquid feeding pipe is provided with the pipe sleeve, so that liquid feeding pipes with different volumes and different types can be adapted to the liquid feeding device, the liquid feeding pipe can adopt a medical injector (except a needle head) on the market, the liquid feeding pipe does not need to be specially customized, and the cost is reduced.

All the technical features of the above components can be freely combined without conflict, and moreover, the structural change, the modification and the modification of the components are also within the protection scope of the patent. This patent miniflow send liquid device's beneficial effect be:

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.

While embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications and variations may be made therein by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A microfluidic delivery device, comprising:

the support device comprises a support main body (3), wherein at least one through liquid feeding hole (32) is formed in the support main body (3);

the liquid sending pipe (31) is accommodated in the liquid sending hole (32), the liquid sending pipe (31) comprises a solution cylinder (311) and a push-pull rod (312), the solution cylinder (311) is provided with a solution cavity (3111) with two open ends, raw material liquid is accommodated in the solution cavity (3111), the push-pull rod (312) extends into the solution cavity (3111) from one end of the solution cavity (3111) and is accommodated in the solution cavity (3111), and the push-pull rod (312) can push the raw material liquid into a target container.

2. The microfluidic device according to claim 1, further comprising a sleeve (33);

the liquid delivery pipe (31) can be accommodated in the liquid delivery hole (32) through a sleeve (33).

3. The micro fluid delivery device according to claim 1, wherein the support body (3) comprises a movable portion (301) and a fixed portion (302), the movable portion (301) is rotatably connected to the fixed portion (302), and the movable portion (301) is rotatable around the fixed portion (302);

be provided with first arc portion (321) on removal portion (301), fixed part (302) are provided with second arc portion (322), first arc portion (321) and second arc portion (322) surround and form and send liquid hole (32).

4. The microfluidic device according to claim 3, wherein the first arc-shaped portion (321) includes an arc-shaped segment (3211) and a circular segment (3212) along the axial direction, the arc-shaped segment (3211) is located at an end of the liquid delivery hole (32) away from the target container, and the second arc-shaped portion (322) is matched with the arc-shaped segment (3211).

5. The microfluidic liquid delivery device according to claim 4, wherein the arc-shaped segment (3211) has an included angle in the range of 180 ° to 360 °, and the arc-shaped segment (3211) prevents the liquid delivery tube (31) from coming loose or falling from the liquid delivery hole (32).

6. The micro fluid delivery device according to claim 2,

the pipe sleeve (33) is a hollow pipe with two open ends, the liquid sending pipe (31) is buckled in the liquid sending hole (32) through the pipe sleeve (33), a limiting ring (331) is sleeved at one end outside the pipe sleeve (33), the pipe sleeve (33) is accommodated in the liquid sending hole (32), and the limiting ring (331) is abutted to the orifice of the liquid sending hole (32).

7. The microfluidic liquid delivery device according to claim 6, wherein the outer diameter of the sleeve (33) is consistent with the outer diameter of the liquid delivery hole (32), and the inner diameter of the sleeve (33) is consistent with the outer diameter of the liquid delivery pipe (31);

the length of the pipe sleeve (33) is not more than that of the liquid feeding hole (32);

one end of the liquid conveying hole (32) close to the limiting ring is provided with a limiting ring groove (3213) matched with the limiting ring (331), and the limiting ring (331) is accommodated in the limiting ring groove (3213).

8. The microfluidic delivery device according to claim 1, wherein the liquid delivery tube (31) contains a volume of the raw liquid in a range of 0.5ml to 20 ml.

9. The microfluidic device according to claim 4, wherein the included angle of the arc-shaped segment (3211) is 180 ° -270 °.

10. The micro flow delivery device according to claim 8, wherein the volumes of the liquid delivery tube (31) containing the raw liquid include 0.5ml, 1ml, 2ml, 3ml, 5ml, 7ml, 8ml, 10ml, 12ml, 15ml, 18ml and 20 ml.