CN112718033B - Accurate reagent feeding device - Google Patents
Accurate reagent feeding device Download PDFInfo
- Publication number
- CN112718033B CN112718033B CN202110070044.1A CN202110070044A CN112718033B CN 112718033 B CN112718033 B CN 112718033B CN 202110070044 A CN202110070044 A CN 202110070044A CN 112718033 B CN112718033 B CN 112718033B
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- cavity
- assembly
- reagent
- liquid
- liquid storage
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- 239000003153 chemical reaction reagent Substances 0.000 title claims abstract description 52
- 239000007788 liquid Substances 0.000 claims abstract description 68
- 238000004891 communication Methods 0.000 claims abstract description 12
- 238000003825 pressing Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 230000003044 adaptive effect Effects 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/0289—Apparatus for withdrawing or distributing predetermined quantities of fluid
- B01L3/0293—Apparatus for withdrawing or distributing predetermined quantities of fluid for liquids
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The invention relates to the technical field of laboratory equipment, in particular to a reagent accurate supply device, a control assembly and a liquid dropping assembly are arranged on a liquid storage assembly, the liquid storage assembly comprises a first cavity, a second cavity and a third cavity, the first cavity is respectively communicated with the control assembly and the liquid dropping assembly, the second cavity is used for storing a reagent, the first cavity is also respectively communicated with the second cavity and the third cavity, and the third cavity is communicated with the second cavity and is controlled to be communicated with the outside through a cover plate; after the air in the communication space between the control component and the first cavity is discharged from the third cavity by extruding the rubber sleeve, negative pressure is generated in the air to suck the reagent in the second cavity into the first cavity; closing the cover plate presses the rubber sleeve to discharge the reagent in the first cavity from the drip assembly. Each cavity is connected through a plurality of check valves, through the preforming position in the observation measuring cylinder, through the liquid volume in its change accurate control reagent discharge to the dropping liquid subassembly of scale value, device simple structure has the practicality more.
Description
Technical Field
The invention relates to the technical field of laboratory equipment, in particular to a reagent accurate supply device.
Background
Along with the development of society and the progress of scientific technology, various precise experimental devices are widely applied to various laboratories, in the scientific experimental process, various liquid reagents are often required, the reagents are required to be extracted from original liquid storage bottles for further experimental operation, and in the specific experimental operation process, the liquid reagents are required to be accurately extracted and supplied.
In the prior art center, most of liquid reagents are stored in a special liquid storage bottle, the liquid is sucked from the bottle through a traditional pipette, then experimental operation is carried out, the supply quantity of the reagents for experiments cannot be accurately obtained through the pipette, experimental data cannot be better controlled in the process of carrying out precise experiments, and finally the experimental data are error-caused, so that the expected experimental effect cannot be achieved.
In view of the above problems, the present inventors have actively studied and innovated based on the practical experience and expertise that are abundant for many years in such product engineering applications, so as to create a precise reagent feeding device, which is more practical.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the accurate reagent feeding device can accurately measure the specific dosage of the reagent in the experiment.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a reagent precision feeding apparatus comprising: the liquid storage assembly, the control assembly and the liquid dropping assembly are arranged on the liquid storage assembly;
The liquid storage assembly is of a closed cylinder structure and comprises a first cavity, a second cavity and a third cavity, wherein the first cavity is a cylinder and is concentric with the liquid storage assembly, the second cavity and the third cavity are circumferentially arranged on the outer ring of the first cavity, and the third cavity is arranged at the upper end of the second cavity;
The first cavity is respectively communicated with the control assembly and the dropping liquid assembly, the second cavity is used for storing a reagent, the first cavity is also respectively communicated with the second cavity and the third cavity, and the third cavity is communicated with the second cavity and is controlled to be communicated with the outside through a cover plate;
The control assembly is arranged above the liquid storage assembly, the liquid dropping assembly is arranged below the liquid storage assembly, and the control assembly is used for sucking the reagent in the second cavity into the first cavity and outputting the reagent sucked into the first cavity to the liquid dropping assembly for dropping out.
Further, a first one-way valve is arranged between the first cavity and the second cavity, a second one-way valve is arranged between the first cavity and the third cavity, and a third one-way valve is arranged between the first cavity and the liquid dropping component;
The first one-way valve is used for controlling the communication from the inside of the second cavity to the inside of the first cavity, the second one-way valve is used for controlling the communication from the inside of the first cavity to the inside of the third cavity, and the third one-way valve is used for controlling the communication from the first cavity to the dropping component.
Further, the first one-way valve and the second one-way valve are both arranged on the side wall of the first cavity, and a plurality of one-way valves are uniformly distributed along the circumferential direction;
The first check valve and the second check valve are arranged in the horizontal direction, the first check valve is arranged at the bottom of the side wall of the first cavity, and the third check valve is arranged in the vertical direction.
Further, the inner bottom surface of the first cavity is funnel-shaped, and the cross section of the first cavity is gradually folded from top to bottom along the vertical direction.
Further, the upper end and the lower end of the liquid storage component are respectively provided with a first threaded hole and a second threaded hole corresponding to the first cavity, and the control component and the liquid dropping component are respectively detachably connected with the liquid storage component through the first threaded hole and the second threaded hole.
Further, the control assembly comprises a measuring cylinder and a rubber sleeve, wherein the measuring cylinder is of a cylinder structure with two through ends, the rubber sleeve is sleeved at one end of the measuring cylinder, and external threads which are adaptive to the first threaded holes are arranged at the other end of the measuring cylinder.
Further, scales are arranged on the measuring cylinder along the length direction of the measuring cylinder, a pressing sheet which is matched with the inner wall of the measuring cylinder is arranged in the measuring cylinder, and the pressing sheet is in sliding connection with the inner wall of the measuring cylinder and divides the measuring cylinder into two cavities which are not communicated with each other.
Further, the dropping liquid component is arranged into a cylindrical structure, one end of the dropping liquid component is arranged into a liquid outlet end, and an external thread which is adaptive to the second threaded hole is arranged on the outer wall of the other end of the dropping liquid component.
The beneficial effects of the invention are as follows: after the air in the communication space between the control component and the first cavity is discharged from the third cavity by extruding the rubber sleeve, negative pressure is generated in the air so as to suck the reagent in the second cavity into the first cavity; closing the apron and extruding the rubber sleeve again and extruding the reagent in the first cavity to the dropping liquid subassembly and by the dropping liquid subassembly discharge, can control the accurate flow of output reagent through the measuring cylinder in the control assembly. Each cavity is connected through a plurality of check valves, through the preforming position in the observation measuring cylinder, through the liquid volume in its change accurate control reagent discharge to the dropping liquid subassembly of scale value, device simple structure has the practicality more.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a schematic diagram of a reagent accurate supply device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a liquid storage assembly according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a control assembly according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a drip assembly according to an embodiment of the invention.
Reference numerals: 1. a liquid storage component; 11. a first cavity; 111. a first one-way valve; 112. a second one-way valve; 113. a third one-way valve; 12. a second cavity; 13. a third cavity; 131. a cover plate; 14. a first threaded hole; 15. a second threaded hole; 2. a control assembly; 21. a measuring cylinder; 22. rubber sleeves; 23. tabletting; 3. a drip assembly.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The reagent accurate supply device as shown in fig. 1 to 4 comprises a liquid storage component 1, a control component 2 and a dripping component 3, wherein the control component 2 and the dripping component 3 are arranged on the liquid storage component 1; the liquid storage assembly 1 is arranged into a closed cylinder structure and comprises a first cavity 11, a second cavity 12 and a third cavity 13, wherein the first cavity 11 is arranged into a cylinder and is concentric with the liquid storage assembly 1, the second cavity 12 and the third cavity 13 are circumferentially arranged on the outer ring of the first cavity 11, and the third cavity 13 is arranged at the upper end of the second cavity 12; the first cavity 11 is respectively communicated with the control assembly 2 and the dropping liquid assembly 3, the second cavity 12 is used for storing reagents, the first cavity 11 is also respectively communicated with the second cavity 12 and the third cavity 13, and the third cavity 13 is communicated with the second cavity 12 and is controlled to be communicated with the outside through the cover plate 131; the control assembly 2 is arranged above the liquid storage assembly 1, the liquid dropping assembly 3 is arranged below the liquid storage assembly 1, the control assembly 2 is used for sucking the reagent in the second cavity 12 into the first cavity 11, and the reagent sucked into the first cavity 11 is output to the liquid dropping assembly 3 through the control assembly 2 to drop out.
In particular embodiments, each supply device is used to store a reagent and supply the reagent for accurate laboratory operations. Firstly, a liquid reagent is arranged in the second cavity 12, and the cover plate 131 is opened to enable the third cavity 13 to be communicated with the outside; after the air in the communication space between the control component 2 and the first cavity 11 is discharged from the third cavity by extruding the rubber sleeve 22, negative pressure is generated in the air so as to suck the reagent in the second cavity 12 into the first cavity 11; closing the cover plate 131 at this time to isolate the third cavity 13 from the outside; the rubber boot 22 in the control assembly 2 is then pressed to force the reagent in the first chamber 11 out to the drip assembly 3 and out of the drip assembly 3. The precise flow rate of the output reagent can be controlled by the measuring cylinder 21 in the control assembly 2.
As a preference to the above embodiment, a first one-way valve 111 is provided between the first chamber 11 and the second chamber 12, a second one-way valve 112 is provided between the first chamber 11 and the third chamber 13, and a third one-way valve 113 is provided between the first chamber 11 and the drip assembly 3; the first one-way valve 111 is used for controlling the communication from the interior of the second cavity 12 to the interior of the first cavity 11, the second one-way valve 112 is used for controlling the communication from the interior of the first cavity 11 to the interior of the third cavity 13, and the third one-way valve 113 is used for controlling the communication from the first cavity 11 to the drip assembly 3.
In the specific implementation process, in the process of extruding the rubber sleeve 22 for the first time, the gas in the space communicated with the control assembly 2 and the first cavity 11 can be discharged to the outside through the second one-way valve 112 and the third one-way valve 113, after the rubber sleeve 22 is loosened, the reagent is sucked into the first cavity 11 from the second cavity 12 through the first one-way valve 111 by the negative pressure generated in the gas, after the cover plate 131 is closed, the rubber sleeve 22 is extruded again, and the reagent is discharged into the drip assembly 3 through the third one-way valve 113. Each cavity is connected through a plurality of check valves, and simple structure is practical, can control the accurate of reagent and supply.
As a preference of the above embodiment, the first check valve 111 and the second check valve 112 are both disposed on the side wall of the first cavity 11, and are each uniformly distributed with a plurality of pieces along the circumferential direction; wherein, first check valve 111 and second check valve 112 all set up along the horizontal direction, and first check valve 111 sets up in the bottom of first cavity 11 lateral wall, and third check valve 113 sets up along vertical direction. The inner bottom surface of the first cavity 11 is funnel-shaped, and the cross section thereof is gradually folded from top to bottom along the vertical direction.
In a specific implementation process, the plurality of first check valves 111 and the second check valves 112 facilitate the circulation of the reagent and the gas, and the funnel-shaped structure of the bottom surface of the first cavity 11 facilitates the aggregation of the inhaled reagent, so that the inhaled reagent is easier to be input into the dropping liquid component 3.
As a preference of the above embodiment, a first threaded hole 14 and a second threaded hole 15 are respectively formed at the upper end and the lower end of the liquid storage assembly 1 corresponding to the first cavity 11, and the control assembly 2 and the liquid dropping assembly 3 are detachably connected with the liquid storage assembly 1 through the first threaded hole 14 and the second threaded hole 15 respectively. The feeding device is convenient to arrange after the experiment is finished, and the feeding device is more convenient to use.
As a preferable example of the above embodiment, the control unit 2 includes a measuring cylinder 21 and a rubber sleeve 22, the measuring cylinder 21 is provided with a cylinder structure with two ends penetrating, the rubber sleeve 22 is sleeved on one end of the measuring cylinder 21, and an external thread corresponding to the first threaded hole 14 is provided on the other end of the measuring cylinder 21. The drip assembly 3 is arranged into a tubular structure, one end of the drip assembly 3 is arranged into a liquid outlet end, and an external thread which is adaptive to the second threaded hole 15 is arranged on the outer wall of the other end of the drip assembly 3.
As a preferable example of the above embodiment, the measuring cylinder 21 is provided with graduations along the length direction thereof, the inside of the measuring cylinder 21 is provided with a pressing piece 23 corresponding to the inner wall thereof, and the pressing piece 23 is slidably connected with the inner wall of the measuring cylinder 21 and divides the measuring cylinder 21 into two cavities which are not communicated with each other.
When the rubber sleeve 22 is extruded for the first time, the air in the space communicated by the control assembly 2 and the first cavity 11 can be discharged to the outside through the second check valve 112 and the third check valve 113, at this time, the pressing piece 23 is positioned at the bottom of the measuring cylinder 21, the reagent is sucked into the first cavity 11 from the second cavity 12 through the negative pressure generated in the pressing piece 111 after the rubber sleeve 22 is loosened, the pressing piece 23 can be lifted to the part with graduation marks along the measuring cylinder 21, the rubber sleeve 22 is extruded again after the cover plate 131 is closed, the position of the pressing piece 23 in the measuring cylinder 21 is observed, and the reagent is precisely controlled to be discharged into the drip assembly 3 through the third check valve 113 through the change of the graduation value on the pressing piece 23.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A reagent accurate supply device, comprising: the liquid storage device comprises a liquid storage component (1), a control component (2) and a liquid dropping component (3), wherein the control component (2) and the liquid dropping component (3) are arranged on the liquid storage component (1);
The liquid storage assembly (1) is of a closed cylinder structure and comprises a first cavity (11), a second cavity (12) and a third cavity (13), the first cavity (11) is arranged into a cylinder and is arranged concentrically with the liquid storage assembly (1), the second cavity (12) and the third cavity (13) are all arranged on the outer ring of the first cavity (11) along the circumferential direction, and the third cavity (13) is arranged at the upper end of the second cavity (12);
the first cavity (11) is respectively communicated with the control assembly (2) and the liquid dropping assembly (3), the second cavity (12) is used for storing a reagent, the first cavity (11) is also respectively communicated with the second cavity (12) and the third cavity (13), and the third cavity (13) is communicated with the second cavity (12) and is controlled to be communicated with the outside through a cover plate (131);
the control assembly (2) is arranged above the liquid storage assembly (1), the liquid dropping assembly (3) is arranged below the liquid storage assembly (1), the control assembly (2) is used for sucking the reagent in the second cavity (12) into the first cavity (11), and outputting the reagent sucked into the first cavity (11) to the liquid dropping assembly (3) through the control assembly (2) for dropping;
A first one-way valve (111) is arranged between the first cavity (11) and the second cavity (12), a second one-way valve (112) is arranged between the first cavity (11) and the third cavity (13), and a third one-way valve (113) is arranged between the first cavity (11) and the liquid dropping component (3);
The first one-way valve (111) is used for controlling the communication from the interior of the second cavity (12) to the interior of the first cavity (11), the second one-way valve (112) is used for controlling the communication from the interior of the first cavity (11) to the interior of the third cavity (13), and the third one-way valve (113) is used for controlling the communication from the first cavity (11) to the dropping assembly (3);
The control assembly (2) comprises a measuring cylinder (21) and a rubber sleeve (22), wherein the measuring cylinder (21) is of a cylinder structure with two through ends, and the rubber sleeve (22) is sleeved at one end of the measuring cylinder (21);
The measuring cylinder (21) is provided with scales along the length direction, a pressing sheet (23) which is matched with the inner wall of the measuring cylinder (21) is arranged in the measuring cylinder (21), and the pressing sheet (23) is in sliding connection with the inner wall of the measuring cylinder (21) and divides the measuring cylinder (21) into two cavities which are not communicated with each other.
2. The accurate reagent supply device according to claim 1, wherein the first check valve (111) and the second check valve (112) are both disposed on a side wall of the first cavity (11), and are each uniformly distributed with a plurality of valves along a circumferential direction;
the first check valve (111) and the second check valve (112) are arranged in the horizontal direction, the first check valve (111) is arranged at the bottom of the side wall of the first cavity (11), and the third check valve (113) is arranged in the vertical direction.
3. The accurate reagent supplying apparatus according to claim 2, wherein the inner bottom surface of the first chamber (11) is provided in a funnel shape, and the cross section thereof is gradually tapered from top to bottom in the vertical direction.
4. The accurate reagent feeding device according to claim 1, wherein a first threaded hole (14) and a second threaded hole (15) are respectively formed at the upper end and the lower end of the liquid storage component (1) corresponding to the first cavity (11), and the control component (2) and the liquid dropping component (3) are detachably connected with the liquid storage component (1) through the first threaded hole (14) and the second threaded hole (15) respectively.
5. The accurate reagent feeding apparatus according to claim 4, wherein an external thread corresponding to the first screw hole (14) is provided at the other end of the measuring cylinder (21).
6. The accurate reagent feeding apparatus according to claim 4, wherein the drip member (3) is provided in a cylindrical structure, one end of the drip member (3) is provided as a liquid outlet end, and an external thread corresponding to the second screw hole (15) is provided on an outer wall of the other end of the drip member (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110070044.1A CN112718033B (en) | 2021-01-19 | 2021-01-19 | Accurate reagent feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110070044.1A CN112718033B (en) | 2021-01-19 | 2021-01-19 | Accurate reagent feeding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112718033A CN112718033A (en) | 2021-04-30 |
| CN112718033B true CN112718033B (en) | 2024-05-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110070044.1A Active CN112718033B (en) | 2021-01-19 | 2021-01-19 | Accurate reagent feeding device |
Country Status (1)
| Country | Link |
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| CN (1) | CN112718033B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2406571A1 (en) * | 2001-10-05 | 2003-04-05 | Canon Kabushiki Kaisha | Liquid container, liquid supplying apparatus, and recording apparatus |
| WO2005000731A2 (en) * | 2003-06-09 | 2005-01-06 | Dakocytomation Denmark A/S | Diaphram metering chamber dispensing systems |
| CN205146264U (en) * | 2015-11-25 | 2016-04-13 | 青岛市黄岛区中医医院 | Novel pipette of filterable liquid medicine |
| CN111644213A (en) * | 2020-05-25 | 2020-09-11 | 清华大学 | Fluid control device and fluid control method |
| CN214346553U (en) * | 2021-01-19 | 2021-10-08 | 常州工业职业技术学院 | Accurate reagent feeding device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7198175B2 (en) * | 2002-04-26 | 2007-04-03 | Heiner Ophardt | Manual or pump assist fluid dispenser |
| EP2374541A1 (en) * | 2010-04-06 | 2011-10-12 | Symbion Medical Systems Sàrl | Disposable dispensing cartridge for medical assay instrumentation |
| JP7296569B2 (en) * | 2018-10-23 | 2023-06-23 | 日本光電工業株式会社 | Sample storage device |
-
2021
- 2021-01-19 CN CN202110070044.1A patent/CN112718033B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2406571A1 (en) * | 2001-10-05 | 2003-04-05 | Canon Kabushiki Kaisha | Liquid container, liquid supplying apparatus, and recording apparatus |
| WO2005000731A2 (en) * | 2003-06-09 | 2005-01-06 | Dakocytomation Denmark A/S | Diaphram metering chamber dispensing systems |
| CN205146264U (en) * | 2015-11-25 | 2016-04-13 | 青岛市黄岛区中医医院 | Novel pipette of filterable liquid medicine |
| CN111644213A (en) * | 2020-05-25 | 2020-09-11 | 清华大学 | Fluid control device and fluid control method |
| CN214346553U (en) * | 2021-01-19 | 2021-10-08 | 常州工业职业技术学院 | Accurate reagent feeding device |
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| CN112718033A (en) | 2021-04-30 |
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