CN109772218B - Quantitative reagent injection device - Google Patents
Quantitative reagent injection device Download PDFInfo
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- CN109772218B CN109772218B CN201811649754.4A CN201811649754A CN109772218B CN 109772218 B CN109772218 B CN 109772218B CN 201811649754 A CN201811649754 A CN 201811649754A CN 109772218 B CN109772218 B CN 109772218B
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Abstract
The invention discloses a quantitative reagent injection device, which comprises a first tube body, a second tube body arranged in the first tube body, a dosage adjusting tube used for changing the dosage of a reagent, a dosage adjusting tube inserting hole used for inserting the dosage adjusting tube and a pushing device, wherein the dosage adjusting tube inserting hole is formed in the first tube body; the pushing device comprises a first piston arranged in the first pipe body, a second piston arranged in the second pipe body, a first push rod, a second push rod and a general push plate; one end of the first push rod is fixedly connected with the first piston, one end of the second push rod is fixedly connected with the second piston, and the other end of the first push rod and the other end of the second push rod are fixedly connected with the main push plate. The invention has the following beneficial effects: according to the invention, the reagent is injected into the sample, so that the reagent and the sample can be uniformly mixed, and the phenomenon that too much toxic reagent causes harm to human bodies or too little reagent is not beneficial to sample preservation is prevented; the quantitative addition of the reagent can be realized by changing the depth of the dose adjusting tube inserted into the second tube body to adjust the reagent amount; the whole operation is convenient.
Description
Technical Field
The invention relates to the technical field of reagent injection design, in particular to a quantitative reagent injection device which can uniformly mix a reagent and a sample, is convenient to operate, can quantitatively add a toxic reagent and reduce the harm to a human body.
Background
When zooplankton is collected on the sea, seawater is filtered by a zooplankton net, the seawater is filled into a 1L sample bottle, and then formaldehyde is added for fixation and preservation. However, currently, workers directly pour formaldehyde into the sample bottle, so that too much or too little formaldehyde is contained in the sample bottle. The sample is incompletely preserved and is easy to rot due to too low concentration of formaldehyde; too much formaldehyde can cause too high concentration in the sample, the smell is pungent when the indoor identification is carried out, and the formaldehyde is harmful to the human body and even causes diseases when the sample is in the environment for a long time.
Disclosure of Invention
The invention aims to overcome the defects that in the prior art, the reagent and the sample are mixed unevenly, and the sample is stored imperfectly and is easy to rot due to too low formaldehyde concentration; too much formaldehyde concentration in the sample can be caused to be too high, the defect that the formaldehyde concentration is harmful to the human body is overcome, and the quantitative reagent injection device which can uniformly mix the reagent and the sample, is convenient to operate, can quantitatively add the toxic reagent and reduce the harm to the human body is provided.
In order to achieve the purpose, the invention adopts the following technical scheme:
a quantitative reagent injection device comprises a first tube body, a second tube body arranged in the first tube body, a dosage adjusting tube used for changing the dosage of a reagent, a dosage adjusting tube inserting hole used for inserting the dosage adjusting tube and a pushing device; the pushing device comprises a first piston arranged in the first pipe body, a second piston arranged in the second pipe body, a first push rod, a second push rod and a general push plate; one end of a first push rod is fixedly connected with the first piston, the other end of the first push rod penetrates through the first pipe body and is fixedly connected with the main push plate, one end of a second push rod is fixedly connected with the second piston, and the other end of the second push rod penetrates through the second pipe body and the first pipe body and is fixedly connected with the main push plate; the inner side wall of the first pipe body is tangent to the outer side wall of the second pipe body; the outer side wall of the first piston is respectively attached to the inner side wall of the first pipe body and the outer side wall of the second pipe body; the dose control tube insertion hole penetrates through the upper portions of the left side surfaces of the first tube body and the second tube body.
According to the invention, enough samples are extracted into the first tube body by pulling the main push plate outwards, then the main push plate is pushed inwards to inject the reagent in the second tube body into the sample in the first tube body, so that the two are uniformly mixed, and finally the mixed sample and the reagent are injected into the sample bottle; meanwhile, the added reagent amount can be adjusted through the depth of the second tube body inserted by the dose adjusting tube, and the quantitative addition of the reagent can be realized.
Preferably, the second push rod is a telescopic rod, and comprises a plurality of sleeves and a plurality of fixing devices for fixing the sleeves; the diameters of the sleeves are sequentially reduced from outside to inside; the telescopic longest length of the second push rod is equal to that of the first push rod; the fixing device is used for fixing the outer sleeve and each inner sleeve, so that the total push plate cannot shrink when pushed back, and the reagent can be pushed out.
Preferably, the device also comprises a liquid injection hole, an air outlet hole and a liquid outlet hole which are arranged on the first pipe body and the second pipe body; annotate liquid hole and venthole and run through the outer peripheral face of first body and second body, go out the cavity that liquid hole formed towards between first body and the second body.
Preferably, a pipe head is provided at a lower portion of a left side surface of the first pipe body, and a flange is provided on a right side surface of the first pipe body.
Preferably, the dose adjusting tube and the first tube body are both provided with scale marks; can quantitatively extract a sample and quantitatively add a reagent.
Preferably, the fixing device is a shaft pin.
Preferably, the dosage adjusting pipe insertion hole is provided with a sealing device; the diameter of the dosage adjusting pipe insertion hole is matched with the outer diameter of the dosage adjusting pipe; the leakproofness of second body has been guaranteed, prevents that reagent from leaking.
Preferably, a rubber one-way valve is arranged on the liquid outlet hole; guarantee that reagent can only be discharged to first body through going out the liquid hole in, the sample in the first body can not flow in the second body.
Preferably, the first tube and the second tube are formed by an integral molding technique.
Therefore, the invention has the following beneficial effects: according to the invention, the reagent in the second tube body is injected into the sample in the first tube body, so that the reagent and the sample can be uniformly mixed, and the harm to the human body caused by excessive toxic reagents or the harm to the storage of the sample caused by too little reagent can be prevented; the quantitative addition of the reagent can be realized by adjusting the amount of the added reagent by changing the depth of the dose adjusting tube inserted into the second tube body; the invention has simple structure and convenient operation.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
fig. 2 is a cross-sectional view taken along the line a-a of fig. 1 in accordance with the present invention.
In the figure: the device comprises a first pipe body 1, a second pipe body 2, a dosage adjusting pipe 3, a first piston 4, a second piston 5, a first push rod 6, a second push rod 7, a main push plate 8, a liquid injection hole 9, a gas outlet hole 10, a liquid outlet hole 11, a dosage adjusting pipe insertion hole 12, a pipe head 13, a flange 14, a sealing device 15, a rubber one-way valve 16, a sleeve 71 and a fixing device 72.
Detailed Description
The invention is further described in the following detailed description with reference to the drawings in which:
examples
The embodiment shown in fig. 1 is a quantitative reagent injection device, comprising a first tube body 1, a second tube body 2 arranged in the first tube body, a dosage adjusting tube 3 for changing the dosage of a reagent, a pushing device, a liquid injection hole 9, an air outlet hole 10, a liquid outlet hole 11 and a dosage adjusting tube insertion hole 12 for inserting the dosage adjusting tube, wherein the liquid injection hole 9, the air outlet hole 10 and the liquid outlet hole 11 are arranged on the first tube body and the second tube body; the pushing device comprises a first piston 4 arranged in the first pipe body, a second piston 5 arranged in the second pipe body, a first push rod 6, a second push rod 7 and a general push plate 8; the lower part of the left side surface of the first pipe body is provided with a pipe head 13, and the right side surface of the first pipe body is provided with a flange 14; one end of a first push rod is fixedly connected with the first piston, the other end of the first push rod penetrates through the first pipe body and is fixedly connected with the main push plate, one end of a second push rod is fixedly connected with the second piston, and the other end of the second push rod penetrates through the second pipe body and the first pipe body and is fixedly connected with the main push plate; the inner side wall of the first pipe body is tangent to the outer side wall of the second pipe body; the outer side wall of the first piston is respectively attached to the inner side wall of the first pipe body and the outer side wall of the second pipe body; annotate liquid hole and venthole and run through the outer peripheral face of first body and second body, dosage control pipe patchhole runs through the upper portion of the left surface of first body and the left surface of second body, goes out the cavity that the liquid hole formed towards between first body and the second body.
As shown in fig. 1, the second push rod is a telescopic rod, and the second push rod includes a plurality of sleeves 71, and a plurality of fixing devices 72 for fixing each sleeve; the diameters of the sleeves are sequentially reduced from outside to inside; the telescopic longest length of the second push rod is equal to that of the first push rod; the fixing device is a shaft pin.
Furthermore, as shown in fig. 2, the first piston has a crescent shape; the dose adjusting pipe and the first pipe body are both provided with scale marks; as shown in fig. 1, the dose regulator tube insertion hole is provided with a sealing device 15; the diameter of the dosage adjusting pipe insertion hole is matched with the outer diameter of the dosage adjusting pipe; the sealing device is a sealing ring; a rubber one-way valve 16 is arranged on the liquid outlet hole; sealing covers are arranged on the liquid injection hole and the air outlet hole; the first pipe body and the second pipe body are manufactured by adopting an integral forming technology.
The using method of the invention is as follows:
step one, extracting a sample according to a set sample amount SY: the main push plate is pulled outwards, the main push plate drives the first push rod and the first piston to move towards the right side, and a sample is sucked into the first tube body through the tube head; meanwhile, the second push rod also moves towards the right side, the inner sleeve extends outwards, and the shaft pins are used for fixing the sleeves; when the extracted sample amount is equal to the set sample amount, stopping pulling the total push plate;
step two, quantitatively adding a formaldehyde reagent: determining the required reagent amount SS according to the sample amount SY, wherein SS is (5% -10%) SY; obtaining the volume SC of the dose adjusting tube inserted into the second tube body according to the required reagent amount SS and the volume S of the second tube body, wherein SC is S-SS; inserting the dose adjusting tube into the second tube body from the dose adjusting tube insertion hole according to the calculated volume SC of the dose adjusting tube inserted into the second tube body and the scale value on the dose adjusting tube; opening the sealing covers of the liquid injection hole and the air outlet hole, injecting the formaldehyde reagent into the second pipe body from the liquid injection hole, and covering the sealing covers of the liquid injection hole and the air outlet hole after the formaldehyde reagent is filled;
step three, injecting the uniformly mixed sample and a formaldehyde reagent into a sample bottle: the main push plate is pushed inwards, the main push plate drives the second push rod and the second piston to move leftwards, the rubber one-way valve positioned on the liquid outlet hole is opened, the formaldehyde reagent is injected into the first tube body from the second tube body through the liquid outlet hole and is mixed with the sample, when the second piston is contacted with the dosage adjusting tube, the main push plate is continuously pushed, the main push plate drives the second push rod and the second piston to move leftwards, and the formaldehyde reagent is injected into the first tube body from the second tube body through the liquid outlet hole and pushes the dosage adjusting tube out of the second tube body for reuse; simultaneously, the total push plate drives the first push rod and the first piston to move leftwards, and the uniformly mixed sample and the formaldehyde reagent are injected into the sample bottle.
When the device is not used, the first piston is positioned at the leftmost side of the first pipe body, the second piston is positioned at the rightmost side of the second pipe body, and the inner sleeves of the second push rods are all folded in the outer sleeves; after this device uses, pull the rightmost side of first body with first piston, pull the rightmost side of second body with the second piston, demolish the pivot that inserts each telescopic, inwards promote total push pedal, total push pedal drives first push rod and first piston also and moves left, draw in each inner skleeve in the outer sleeve simultaneously, stop promoting total push pedal when first piston reachs first body leftmost side, make first piston, second piston and second push rod all return to the state when not using, be convenient for use next time.
It should be understood that this example is for illustrative purposes only and is not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Claims (8)
1. A quantitative reagent injection device is characterized by comprising a first tube body (1), a second tube body (2) arranged in the first tube body, a dosage adjusting tube (3) used for changing the dosage of a reagent, a dosage adjusting tube inserting hole (12) used for inserting the dosage adjusting tube and a pushing device; the pushing device comprises a first piston (4) arranged in the first pipe body, a second piston (5) arranged in the second pipe body, a first push rod (6), a second push rod (7) and a total push plate (8); one end of a first push rod is fixedly connected with the first piston, the other end of the first push rod penetrates through the first pipe body and is fixedly connected with the main push plate, one end of a second push rod is fixedly connected with the second piston, and the other end of the second push rod penetrates through the second pipe body and the first pipe body and is fixedly connected with the main push plate; the inner side wall of the first pipe body is tangent to the outer side wall of the second pipe body; the outer side wall of the first piston is respectively attached to the inner side wall of the first pipe body and the outer side wall of the second pipe body; the dosage adjusting pipe inserting hole penetrates through the left side surface of the first pipe body and the upper part of the left side surface of the second pipe body; the second push rod is a telescopic rod and comprises a plurality of sleeves (71) and a plurality of fixing devices (72) for fixing the sleeves; the diameters of the sleeves are sequentially reduced from outside to inside; the longest telescopic length of the second push rod is equal to that of the first push rod.
2. The quantitative reagent injection device according to claim 1, further comprising a liquid injection hole (9), a gas outlet hole (10) and a liquid outlet hole (11) provided in the first and second tube bodies; annotate liquid hole and venthole and run through the outer peripheral face of first body and second body, go out the cavity that liquid hole formed towards between first body and the second body.
3. The quantitative reagent injector according to claim 1, wherein a tip (13) is provided on a lower portion of a left side surface of the first pipe body, and a flange (14) is provided on a right side surface of the first pipe body.
4. The quantitative reagent injector of claim 1, wherein the dose control tube and the first tube body each have graduation marks thereon.
5. A metered dose reagent injection apparatus as recited in claim 1 wherein said securing means is an axle pin.
6. A dosing reagent injection device according to claim 2, wherein said dosing tube insertion hole is provided with sealing means (15); the diameter of the dose setting tube insertion hole is adapted to the outer diameter of the dose setting tube.
7. A dosing reagent injection device according to claim 2, characterized in that a rubber one-way valve (16) is arranged on said exit opening.
8. A dosing device according to claim 1, 2, 3, 4, 5, 6 or 7, wherein the first and second tubular bodies are formed using an integral moulding technique.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811649754.4A CN109772218B (en) | 2018-12-30 | 2018-12-30 | Quantitative reagent injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811649754.4A CN109772218B (en) | 2018-12-30 | 2018-12-30 | Quantitative reagent injection device |
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| Publication Number | Publication Date |
|---|---|
| CN109772218A CN109772218A (en) | 2019-05-21 |
| CN109772218B true CN109772218B (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811649754.4A Active CN109772218B (en) | 2018-12-30 | 2018-12-30 | Quantitative reagent injection device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112326645A (en) * | 2020-10-30 | 2021-02-05 | 上海明略人工智能(集团)有限公司 | Cleaning equipment |
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| CN207964748U (en) * | 2018-02-05 | 2018-10-12 | 天津双佛生物科技有限公司 | A kind of adjustable sample introduction needle of input |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100145305A1 (en) * | 2008-11-10 | 2010-06-10 | Ruth Alon | Low volume accurate injector |
| US8944780B2 (en) * | 2011-03-25 | 2015-02-03 | Bayer Medical Care Inc. | Pumping devices, systems including multiple pistons and methods for use with medical fluids |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101312759A (en) * | 2004-12-24 | 2008-11-26 | 伊恩·马歇尔·穆尔 | Safety syringe |
| CN101379374A (en) * | 2006-02-13 | 2009-03-04 | 分配技术有限公司 | Dosing device for a fluid |
| CN202240417U (en) * | 2011-09-06 | 2012-05-30 | 珠海格力电器股份有限公司 | Pre-tightening head of plastic nut and automatic plastic nut tightening machine |
| CN203402520U (en) * | 2013-08-23 | 2014-01-22 | 赵寒梅 | Novel tablet distribution box |
| CN203539804U (en) * | 2013-10-11 | 2014-04-16 | 深圳市南山区人民医院 | Type A endotoxin quantitative syringe |
| CN104014073A (en) * | 2014-06-25 | 2014-09-03 | 苏州蔻美新材料有限公司 | Hydro-liquid dressing injection device |
| CN107073199A (en) * | 2014-09-05 | 2017-08-18 | 魏民 | Automatic injection device for variable dose of medication |
| CN205041911U (en) * | 2015-10-16 | 2016-02-24 | 山东凯利医疗器械有限公司 | Disposable medical syringe |
| CN206766757U (en) * | 2017-05-05 | 2017-12-19 | 苏州信亨自动化科技有限公司 | A kind of quantitative medicine outlet device of modified medicine in bulk |
| CN207964748U (en) * | 2018-02-05 | 2018-10-12 | 天津双佛生物科技有限公司 | A kind of adjustable sample introduction needle of input |
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| CN109772218A (en) | 2019-05-21 |
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