CN213726594U - Quantitative sampling test tube - Google Patents
Quantitative sampling test tube Download PDFInfo
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- CN213726594U CN213726594U CN202021657259.0U CN202021657259U CN213726594U CN 213726594 U CN213726594 U CN 213726594U CN 202021657259 U CN202021657259 U CN 202021657259U CN 213726594 U CN213726594 U CN 213726594U
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Abstract
The utility model discloses a ration formula sample test tube, the pipette that has the suction inlet including the bottom, but the interior lower half cavity of pipette forms the stock solution storehouse of holding reagent, the top in the pipette is provided with and changes the imbibition mechanism of stock solution storehouse internal pressure, stock solution storehouse intercommunication has dosing mechanism, dosing mechanism to input volume in the stock solution storehouse is less than the gas of the capacity in stock solution storehouse, make stock solution storehouse discharge with gaseous equivalent reagent. The beneficial effects of the utility model are mainly embodied in that: one side of the pipette is communicated with a quantifying mechanism, and the quantifying bin with the capacity smaller than that of the liquid storage bin is used for controlling the liquid storage bin to discharge reagents with the same capacity at each time, so that an operator can conveniently and uniformly distribute samples sucked by the liquid storage bin after sampling, the experiment efficiency is improved, and the practical use is facilitated.
Description
Technical Field
The utility model relates to an experimental apparatus technical field specifically relates to a ration formula sample test tube.
Background
In the experiment or detection, in order to simplify the experiment process and reduce unnecessary waste, the medicine is often required to be sampled. Sampling refers to the process of extracting an individual or sample from a population, i.e., the process of testing or observing the population.
The existing liquid sample detection is usually carried out by sampling in batches through test tubes, the sampling tube on the market at present consists of a glass suction tube and a rubber air bag at the top, the liquid sucked in the suction tube is difficult to be evenly distributed after the sampling tube sucks the sample, and particularly in the experiment needing a plurality of samples with the same quantity, the sampling tube is frequently used for sucking the sample for a plurality of times, so that the experiment efficiency is very low. Therefore, how to quickly and evenly distribute the aspirated samples is a problem which needs to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects existing in the prior art and providing a quantitative sampling test tube.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a ration formula sample test tube, includes that the bottom has the pipette of suction inlet, but the lower half cavity in the pipette forms the stock solution storehouse of holding reagent, the top in the pipette is provided with can change the imbibition mechanism of stock solution storehouse internal pressure, stock solution storehouse intercommunication has dosing mechanism, dosing mechanism to the input volume is less than in the stock solution storehouse the gas of the capacity in stock solution storehouse makes stock solution storehouse discharge with gaseous equivalent reagent.
Preferably, the quantifying mechanism comprises a hollow shell, the liquid outlet mechanism is arranged at the top in the shell, the bottom of the shell is a quantifying bin capable of storing gas, and the quantifying bin is communicated with the liquid storage bin.
Preferably, the capacity of the quantitative bin is smaller than that of the liquid storage bin.
Preferably, the liquid outlet mechanism comprises a liquid outlet rod and a first elastic part sleeved on the liquid outlet rod, the bottom of the liquid outlet rod is provided with a first pressing plate, the edge of the first pressing plate is in close contact with the inner wall of the shell and can slide up and down along the inner wall of the shell, a limiting block is arranged on the inner wall of the shell, the liquid outlet rod penetrates through the limiting block, the first pressing plate is located below the limiting block, one end of the first elastic part is abutted to the upper surface of the limiting block, and the other end of the first elastic part is abutted to the lower surface of a stop block fixedly arranged on the liquid outlet rod.
Preferably, two one-way valves are arranged on the bin wall of the quantitative bin, one-way valve is arranged on the bin wall of the quantitative bin and used for sucking external gas, and the other one-way valve is arranged at the joint of the quantitative bin and the liquid storage bin and used for inputting gas into the liquid storage bin.
Preferably, the pipette and the dosing mechanism are arranged in parallel, and the casing is fixedly connected to the outer pipe wall of the pipette.
Preferably, the imbibition mechanism includes that imbibition pole and cover are located second elastic component on the imbibition pole, the bottom of imbibition pole has set firmly the second clamp plate, the clamp plate with the inner wall in close contact with of imbibition pole can be followed and slided from top to bottom, be provided with the limiting plate on the inner wall, the imbibition pole passes the limiting plate just the second clamp plate is located the below of limiting plate, the last baffle that has set firmly of imbibition pole, the second elastic component set up in the limiting plate with between the baffle.
Preferably, the first elastic member and the second elastic member are return springs.
Preferably, the peripheral walls of the first pressing plate and the second pressing plate are provided with rubber rings, and the tops of the liquid outlet rod and the liquid suction rod are provided with handles.
Preferably, the liquid storage bin is a cone with the caliber gradually reduced from top to bottom, and the suction port is positioned at the bottom of the liquid storage bin.
The beneficial effects of the utility model are mainly embodied in that:
1. one side of the pipette is communicated with a quantifying mechanism, and the quantifying bin with the capacity smaller than that of the liquid storage bin is used for controlling the liquid storage bin to discharge the reagent with the same capacity each time, so that an operator can conveniently and uniformly distribute the sample sucked by the liquid storage bin after sampling, the experimental efficiency is improved, and the practical use is facilitated;
2. the liquid suction mechanism and the liquid outlet mechanism can take and discharge liquid by changing the structures of the air pressure in the liquid storage bin and the quantitative bin through the up-and-down sliding of the liquid suction rod and the liquid outlet rod, so that the components of the liquid taking and the liquid discharging can be controlled by an operator in actual operation, and the reagent with the same component can be sucked and discharged every time;
3. the liquid storage bin and the quantitative bin are connected through a one-way valve, so that gas can be input into the liquid storage bin from the quantitative bin, and the gas and liquid in the liquid storage bin cannot flow back, so that the gas capacity in the quantitative bin is kept constant;
4. the other one-way valve arranged on the outer wall of the quantitative bin ensures that external air cannot enter the quantitative bin when the quantitative mechanism inputs air into the liquid storage bin, and ensures that the volume discharged from the quantitative bin is kept constant;
5. the conical liquid storage bin is convenient for operators to insert the liquid suction pipe into other containers in actual operation, so that liquid suction is facilitated;
6. the peripheral walls of the bottom pressing blocks of the liquid outlet rod and the liquid suction rod are provided with rubber rings so as to reduce the friction force in the up-and-down sliding process and improve the fluency of the liquid outlet rod and/or the liquid suction rod; and the rubber ring can ensure the air tightness between the second pressing plate and the inner wall of the liquid suction pipe, and ensure that the liquid suction mechanism sucks the reagent.
Drawings
The technical scheme of the utility model is further explained by combining the attached drawings as follows:
FIG. 1: schematic diagram of an embodiment of the present invention;
FIG. 2: schematic diagram of an embodiment of the present invention;
FIG. 3: the embodiment of the utility model provides a working condition picture.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments are not limited to the present invention, and structural, method, or functional changes made by those skilled in the art according to these embodiments are all included in the scope of the present invention.
In the description of the schemes, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the embodiment, the operator is used as a reference, and the direction close to the operator is a proximal end, and the direction away from the operator is a distal end.
As shown in fig. 1 to 3, the utility model discloses a quantitative sampling test tube, including the pipette 1 that has suction port 101 in the bottom, the cavity of lower half in the pipette 1 forms stock solution storehouse 102 that can hold reagent, top in the pipette 1 is provided with can change imbibition mechanism 3 of stock solution storehouse 102 internal pressure, stock solution storehouse 102 intercommunication has dosing mechanism 2, dosing mechanism 2 to the volume of inputing in stock solution storehouse 102 is less than the gaseous of stock solution storehouse 102's capacity, make stock solution storehouse 102 discharge with gaseous equivalent reagent.
Specifically, as shown in fig. 1, the quantitative mechanism 2 includes a hollow housing 201, a liquid outlet mechanism is disposed at the top inside the housing 201, a quantitative bin 202 capable of storing gas is disposed at the bottom of the housing 201, and the quantitative bin 202 is communicated with the liquid storage bin 102.
Further, the liquid outlet mechanism comprises a liquid outlet rod 203 and a first elastic member 204 sleeved on the liquid outlet rod 203, the bottom of the liquid outlet rod 203 is provided with a first pressing plate 208, the edge of the first pressing plate is in close contact with the inner wall of the shell 201 and can slide up and down along the inner wall, the inner wall of the shell 201 is provided with a limiting block 205, the liquid outlet rod 203 penetrates through the limiting block 205, the first pressing plate 208 is located below the limiting block 205, one end of the first elastic member 204 abuts against the upper surface of the limiting block 205, and the other end abuts against the lower surface of a retaining block 206 fixedly arranged on the liquid outlet rod 203. In order to press the liquid outlet rod 203 downwards, the top of the liquid outlet rod 203 is provided with a handle 4 to facilitate the application of force by an operator. The utility model provides a handle 4, first clamp plate 208, dog 206 follow go out liquid pole 203 and reciprocate in step.
In order to improve the smoothness of the liquid outlet rod 203 sliding up and down, a rubber ring (not shown) is arranged on the outer peripheral wall of the first pressing plate 208, and in addition, the rubber ring can also ensure the air tightness of the quantitative bin 202. In other embodiments, the rubber ring may be made of other materials, such as silicone.
In the preferred embodiment, the first elastic member 204 is a return spring, the first elastic member 204 always applies an upward elastic force to the stopper 206, and when the liquid outlet rod 203 is not pressed downward, the stopper 206 is pressed against the top of the housing 201 by the elastic force of the first elastic member 204.
In order to ensure that the capacity of the gas stored in the quantitative bin 202 is kept constant, two check valves are arranged on the wall of the quantitative bin 202, a first check valve 2071 is arranged on the wall of the quantitative bin 202 and used for sucking external gas, and a second check valve 2072 is arranged at the joint of the quantitative bin 202 and the liquid storage bin 102 and used for inputting gas into the liquid storage bin 102. Specifically, the surfaces of the first and second check valves 2071 and 2072 are protruded outward, so that they can be opened only from the inside to the outside. As shown in fig. 2 and 3, the working principle is as follows: when the liquid outlet rod 203 is pressed downwards, the first one-way valve 2071 is closed, the second one-way valve 2072 is opened, and the gas in the quantitative bin 202 is input into the liquid storage bin 102; when the liquid outlet rod 203 is upward, the second check valve 2072 is closed, the first check valve 2071 is opened, and external air enters the quantitative bin 202.
In order to ensure that the liquid storage chamber 102 discharges gas with the same volume as the dosing chamber 202 each time, the dosing chamber 202 has a smaller volume than the liquid storage chamber 102.
In the preferred embodiment, the pipette 1 and the quantitative mechanism 2 are disposed in parallel, and the casing 201 is fixed to the outer tube wall of the pipette 1. The housing 201 may be fastened to the outer tube wall of the pipette 1 in any suitable way, e.g. glued, and the housing 201 may also be formed integrally with the outer tube wall of the pipette 1. The pipette 1 and the quantifying mechanism 2 are arranged in parallel and are more fit with the operation habit of operators, and the pipette 1 is convenient to store. Of course, in other possible embodiments, the pipette 1 may not be parallel to the dosing mechanism 2, for example, the dosing mechanism 2 may be perpendicular to the pipette 1.
As shown in fig. 1 to 3, the liquid suction mechanism 3 includes a liquid suction rod 301 and a second elastic member 302 sleeved on the liquid suction rod 301, a second pressing plate 303 is fixedly disposed at the bottom of the liquid suction rod 301, the pressing plate 303 is in close contact with the inner wall of the liquid suction rod 1 and can slide up and down, a limiting plate 304 is disposed on the inner wall, the liquid suction rod 301 passes through the limiting plate 304, the second pressing plate 303 is located below the limiting plate 304, a baffle 305 is fixedly disposed on the liquid suction rod 301, and the second elastic member 302 is disposed between the limiting plate 304 and the baffle 305. In order to facilitate the liquid suction, a rubber ring (not shown) is arranged on the outer peripheral wall of the second pressing plate 303, and the handle 4 is also arranged at the top of the liquid suction rod 301. The arrangement of the rubber ring can reduce the friction force between the second pressing plate 303 and the inner wall of the pipette 1, so that the rubber ring can conveniently slide up and down smoothly along with the pipette rod 301, and the rubber ring can ensure the airtightness between the second pressing plate 303 and the inner wall of the pipette 1, so as to ensure that the pipette mechanism 3 sucks the reagent. In other possible embodiments, the peripheral wall of the second pressing plate 303 may also be provided with other media having elastic material, such as a silicone ring. The second elastic element 302 in the preferred embodiment is a return spring, but in other possible embodiments, the second elastic element 302 may be made of other elastic materials.
In order to facilitate the operator to insert the pipette 1 into other containers in actual operation, the reservoir 102 is tapered with a diameter gradually decreasing from top to bottom, the suction port 101 is located at the bottom of the reservoir 102, and reagent can be sucked into the reservoir 102 from the suction port 101.
The cross-section of the pipette 1 and the housing 201 of the dosing mechanism 2 in the preferred embodiment is circular, but in other possible embodiments the cross-section of the pipette 1 and the housing 201 may be any other suitable shape, such as oval, square, triangular, etc.
The utility model discloses a theory of operation does:
and 3, restoring the liquid outlet rod 203 to the original position under the action of the first elastic piece 204, and refilling the quantitative bin 102 with gas.
The beneficial effects of the utility model are mainly embodied in that: one side of the pipette 1 is communicated with a quantifying mechanism 2, and the quantifying bin 202 with the capacity smaller than that of the liquid storage bin 102 is used for controlling the liquid storage bin 102 to discharge reagents with the same capacity at each time, so that an operator can conveniently and uniformly distribute samples sucked by the liquid storage bin after sampling, the experiment efficiency is improved, and the practical use is facilitated.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. Quantitative formula sample test tube, including pipette (1) that the bottom has suction inlet (101), but lower half cavity in pipette (1) forms stock solution storehouse (102) of holding reagent, top in pipette (1) is provided with can change imbibition mechanism (3) of stock solution storehouse (102) internal pressure, its characterized in that: the liquid storage bin (102) is communicated with a quantitative mechanism (2), and the quantitative mechanism (2) inputs gas with the volume smaller than the capacity of the liquid storage bin (102) into the liquid storage bin (102) so that the liquid storage bin (102) discharges the reagent with the same quantity as the gas.
2. A quantitative sampling tube according to claim 1, wherein: the quantitative mechanism (2) comprises a hollow shell (201), a liquid outlet mechanism is arranged at the top of the shell (201), a quantitative bin (202) capable of storing gas is arranged at the bottom of the shell (201), and the quantitative bin (202) is communicated with the liquid storage bin (102).
3. A quantitative sampling tube according to claim 2, wherein: the capacity of the dosing bin (202) is smaller than the liquid storage bin (102).
4. A quantitative sampling tube according to claim 3, wherein: the liquid outlet mechanism comprises a liquid outlet rod (203) and a first elastic piece (204) sleeved on the liquid outlet rod (203), the bottom of the liquid outlet rod (203) is provided with a first pressing plate (208) which is in close contact with the inner wall of the shell (201) at the edge and can slide up and down, the inner wall of the shell (201) is provided with a limiting block (205), the liquid outlet rod (203) penetrates through the limiting block (205), the first pressing plate (208) is located below the limiting block (205), one end of the first elastic piece (204) is abutted to the upper surface of the limiting block (205), and the other end of the first elastic piece is abutted to the lower surface of a stop block (206) fixedly arranged on the liquid outlet rod (203).
5. A quantitative sampling tube according to claim 4, wherein: two one-way valves are arranged on the bin wall of the quantitative bin (202), a first one-way valve (2071) is arranged on the bin wall of the quantitative bin (202) and used for sucking external air, and a second one-way valve (2072) is arranged at the joint of the quantitative bin (202) and the liquid storage bin (102) and used for inputting air into the liquid storage bin (102).
6. A quantitative sampling tube according to claim 5, wherein: the pipette (1) and the quantifying mechanism (2) are arranged in parallel, and the shell (201) is fixedly connected with the outer pipe wall of the pipette (1).
7. A quantitative sampling tube according to claim 6, wherein: imbibition mechanism (3) are located including imbibition pole (301) and cover second elastic component (302) on imbibition pole (301), the bottom of imbibition pole (301) has set firmly second clamp plate (303), second clamp plate (303) with the inner wall in close contact with of pipette (1) can follow and slide from top to bottom, be provided with limiting plate (304) on the inner wall, imbibition pole (301) pass limiting plate (304) just second clamp plate (303) are located the below of limiting plate (304), baffle (305) have set firmly on imbibition pole (301), second elastic component (302) set up in limiting plate (304) with between baffle (305).
8. A quantitative sampling tube according to claim 7, wherein: the first elastic member (204) and the second elastic member (302) are return springs.
9. A quantitative sampling tube according to claim 8, wherein: the outer peripheral walls of the first pressing plate (208) and the second pressing plate (303) are provided with rubber rings, and the tops of the liquid outlet rod (203) and the liquid suction rod (301) are provided with handles (4).
10. A quantitative sampling tube according to claim 1, wherein: the liquid storage bin (102) is in a conical shape with the caliber gradually reduced from top to bottom, and the suction port (101) is positioned at the bottom of the liquid storage bin (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021657259.0U CN213726594U (en) | 2020-08-11 | 2020-08-11 | Quantitative sampling test tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021657259.0U CN213726594U (en) | 2020-08-11 | 2020-08-11 | Quantitative sampling test tube |
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| Publication Number | Publication Date |
|---|---|
| CN213726594U true CN213726594U (en) | 2021-07-20 |
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| CN202021657259.0U Active CN213726594U (en) | 2020-08-11 | 2020-08-11 | Quantitative sampling test tube |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114557914A (en) * | 2022-03-08 | 2022-05-31 | 成都大华韩艺整形美容医院有限公司 | A water-light composition for treating chloasma, and its preparation method |
| CN114705492A (en) * | 2022-03-15 | 2022-07-05 | 青岛市食品药品检验研究院（青岛市药品不良反应监测中心、青岛市实验动物和动物实验中心） | Accurate fetching and arranging device and method for detecting foam cosmetics |
-
2020
- 2020-08-11 CN CN202021657259.0U patent/CN213726594U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114557914A (en) * | 2022-03-08 | 2022-05-31 | 成都大华韩艺整形美容医院有限公司 | A water-light composition for treating chloasma, and its preparation method |
| CN114705492A (en) * | 2022-03-15 | 2022-07-05 | 青岛市食品药品检验研究院（青岛市药品不良反应监测中心、青岛市实验动物和动物实验中心） | Accurate fetching and arranging device and method for detecting foam cosmetics |
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