CN204831844U - Liquid proportional sampling device with adjustable - Google Patents
Liquid proportional sampling device with adjustable Download PDFInfo
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- CN204831844U CN204831844U CN201520579347.6U CN201520579347U CN204831844U CN 204831844 U CN204831844 U CN 204831844U CN 201520579347 U CN201520579347 U CN 201520579347U CN 204831844 U CN204831844 U CN 204831844U
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Abstract
The utility model provides a liquid proportional sampling device with adjustable, it includes a measurement section of thick bamboo lies in a measurement section of thick bamboo with the lower extreme and is used for liquid to draw and the exhaust piston rod, a measurement section of thick bamboo is gone up the intercommunication and is got liquid end and flowing back end, the upper end of piston rod is provided with the top cap, is fixed with a curb rail on the top cap, this curb rail along the flexible direction of piston rod, and it is parallel with the piston rod, be equipped with and measure a last scale cooperation on this curb rail, be used for the measurement stopper of a measurement section of thick bamboo to the sample of liquid ration, the upper end of a measurement section of thick bamboo is equipped with the flange, and the last plane card of measurement stopper is when this flange, and it is the zero graduation line parallel and level of plane and measurement tin down. The utility model discloses simple structure is practical, and corrosion -resistant, life is longer, and easy operation is convenient, the precision is high when liquid is got to the ration, gos back error correction operation that the accessible is simple and corrects system error, keeps higher stability and reliability in long -term use the in succession, and it is particularly suitable for moving the batch of liquid and gets, and the repeatability is good.
Description
Technical field
The utility model relates to liquid sampling utensil, particularly relates to a kind of adjustable liquid proportional sampling device.
Background technology
At chemical analysis, detect in association area, usually need quantitatively to pipette some samples or dedicated liquid reagent.The main quantitative transfering device in current laboratory is transfer pipet and liquid-transfering gun, but they in use all exist some following defects.
Transfer pipet: have graduated pipette (multi-scale) and large tripe transfer pipet (one division) point, be glass material, must coordinate with rubber pipette bulb in use and measure, it belongs to traditional sampling appliance in laboratory.Transfer pipet Problems existing is as follows: 1. due to structure and using method, the termination of transfer pipet and fragile; 2. calibration process is complicated, and scale cannot be revised according to calibration value; 3. the use of transfer pipet, action need have one to learn and the training process of exercise, and using first cannot direct left-hand seat; 4. easily there is operate miss in use procedure, Long-Time Service, and accuracy significantly reduces, and damaged and be difficult to revise, and is difficult to realize repeatedly reappearance operation and pipettes; 5. accurately cannot measure the sample with viscosity.
Liquid-transfering gun: it, from external introduction, grew up in recent years at home gradually, have different brands and different size, advantage is simple to operation.But also, there are the following problems: 1. price is higher, cannot popularize, and standard configuration cannot be carried out in most of laboratory; 2. necessary periodic calibration, has higher requirements to use and storage condition; 3. maloperation directly can cause the damage of rifle body; 4. the rifle head being used for pipetting is consumptive material, such as PC material, its corrosion-resistant, in order to improve the precision measuring particular liquid, often needing once to use and just will change, causing equipment to waste, and increases the cost of later stage use; 5. owing to employing rubber, cannot measure and there is corrosive liquid, otherwise directly can cause the damage of liquid-transfering gun.
Utility model content
The purpose of this utility model is to provide a kind of adjustable liquid proportional sampling device, and it has compact conformation, quantitative sampling precision advantage high and simple to operation.
The utility model is achieved like this, a kind of adjustable liquid proportional sampling device, it comprises metering cylinder and is positioned at the piston rod of metering cylinder for liquid assimilating and discharge, described metering cylinder is communicated with and gets liquid end and drain side, it is characterized in that, the upper end of described piston rod is provided with top cover, top cover is fixed with a limit guide rail, this limit guide rail along piston rod telescopic direction, and walks abreast with piston rod; This limit guide rail is provided with the metering limited block coordinating with metering cylinder high scale, sample liquid quantitative for metering cylinder.
Described metering limited block slides along limit guide rail, and is fixed in limit guide rail by position fixed knob.The upper end of described metering cylinder is provided with flange, and when the upper plane of metering limited block is stuck in this flange, its lower plane is concordant with the zero graduation line of metering cylinder.
Preferably: the end of described limit guide rail is the positive stop end for limiting the maximum sliding position of metering limited block.
The first retaining valve and the second retaining valve is respectively equipped with in the described pipeline getting liquid end and drain side, and when the open and-shut mode of the first retaining valve and the second retaining valve is contrary.
The lower end of described metering cylinder is provided with and coordinates with liquid bottle mouth, for the sealing jam that liquid bottles temporary sealing and minimizing evaporate; Sealing jam is also provided with the air admission hole be communicated with liquid bottles.
Preferably: described metering cylinder, piston rod and get liquid end and drain side is glassware.
The beneficial effects of the utility model are: the utility model is simple and practical, corrosion-resistant, serviceable life is longer, and simple to operation when quantitative liquid getting, precision is high, also by simply revising operation correcting system error, in continuous Long-Time Service, keep higher stability and reliability, it is particularly suitable for pipetting the batch of liquid, favorable reproducibility.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model when coordinating with liquid bottles.
Structural representation when Fig. 2 is the utility model metering limited block zeroing.
Fig. 3 is the structural representation that the utility model implements to measure in quantitative liquid getting when limited block slides into predetermined graduated.
Fig. 4 be with Fig. 3 implement quantitative liquid getting complete after metering limited block slide into zero graduation time structural representation.
Fig. 5 is the structural representation of the utility model retaining valve.
In the drawings, 1 liquid end 2, first retaining valve 3, second retaining valve 4, drain side 5, metering cylinder 6, piston rod 7, top cover 8, limit guide rail 9, metering limited block 10, position fixed knob 11, positive stop end 12, sealing jam 13, liquid bottles 14, air admission hole, is got.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further.
As Figure 1-4, the utility model is achieved like this, a kind of adjustable liquid proportional sampling device, it comprises metering cylinder 5 and is positioned at the piston rod 6 of metering cylinder 5 for liquid assimilating and discharge, and described metering cylinder 5 is communicated with and gets liquid end 1 and drain side 4, its design feature is, the upper end of described piston rod 6 is provided with top cover 7, top cover 7 is fixed with a limit guide rail 8, this limit guide rail 8 along piston rod 6 telescopic direction, and walks abreast with piston rod 6; This limit guide rail 8 is provided with the metering limited block 9 coordinating with metering cylinder 5 high scale, sample for metering cylinder 5 pairs of liquid quantitatives.The mode adopting limit guide rail 8 to coordinate with metering limited block 9, makes metering external, is convenient to quantitative observation, avoids the error that tradition utilizes piston and scale mark to locate, improve the precision of quantitative liquid getting; The design of top cover 7 can prevent dust granule from entering metering cylinder 5, to reduce systematic error as far as possible in addition.
Metering limited block 9 of the present utility model can slide along limit guide rail 8, and is fixed in limit guide rail 8 by position fixed knob 10.The upper end of this metering cylinder 5 is provided with flange 501, and when the upper plane 902 of metering limited block 9 is stuck in this flange 501, its lower plane 901 is concordant with the zero graduation line of metering cylinder 5.As in Figure 2-4, when quantitatively extracting 4mL solution, first by metering limited block 9 back to zero in limit guide rail 8, now piston rod 6 goes downwards to least significant end, and top cover 7 touch metering cylinder 5, and the lower plane 901 measuring limited block 9 is concordant with the zero graduation line of metering cylinder 5; Then metering limited block 9 is slided along limit guide rail 8, make the lower plane 901 of metering limited block 9 just to the 4mL scale mark of metering cylinder 5, then with position fixed knob 10, metering limited block 9 is fixed in limit guide rail 8, pull piston rod 6, by getting liquid end 1 extracting liquid, along with the motion of piston rod 6, metering limited block 9 also moves to the flange 501 of metering cylinder 5, until metering limited block 9 blocks flange 501, the operation of quantitative 4ml solution completes; Doing so avoids the troublesome operation that scale is observed on Qu Ye limit, conventional piston formula liquid getting device limit, reduce the operation easier of quantitative liquid getting, improve the efficiency of quantitative liquid getting.The utility model is particularly suitable for measuring the batch of liquid, favorable reproducibility.
In order to improve operability of the present utility model, be also the positive stop end 11 for limiting the maximum sliding position of metering limited block 9 by the tip designs of limit guide rail 8; In the pipeline getting liquid end 1 and drain side 4, be also respectively equipped with the first retaining valve 2 and the second retaining valve 3, and when the open and-shut mode of the first retaining valve 2 and the second retaining valve 3 is contrary; And to be provided with in the lower end of metering cylinder 5 and to coordinate with liquid bottle mouth, for liquid bottles temporary sealing with reduce the sealing jam 12 evaporated; Described sealing jam 12 is also provided with the air admission hole 14 be communicated with liquid bottles; Sample liquid getting device in use, be placed in liquid bottles by sealing jam 12, avoid on the one hand evaporating in liquid bottles or contaminated, avoiding getting liquid end 1 contacts foreign matter on the other hand, liquid precision is got in impact, in actual use, by sealing jam 12 and liquid bottle mouth frictional fit, whole sampler is vertically placed, to improve the precision of getting liquid.In addition, can avoid coming off from limit guide rail 8 during restriction metering limited block 9 range by positive stop end 11; When implementing, first retaining valve 2 and the second retaining valve 3 adopt identical structure, as shown in Figure 5, utilize piston rod 6 to work, can form the negative pressure and the malleation that are respectively used to extracting liquid or discharge liquid in metering cylinder 5, the first 2, retaining valve is in negative pressure at metering cylinder 5 and opens, and the second retaining valve 3 is in closed condition, now gas enters liquid bottles 13 by air admission hole 14, and the liquid in liquid bottles then enters in metering cylinder 5, gets liquid and completes; During discharge opeing, liquid gravity in metering cylinder 5, the first retaining valve 2 is in closed condition, promote piston rod 6, make metering cylinder 5 for malleation, the second retaining valve 3 is in malleation at metering cylinder 5 and opens, liquid is able to discharge from drain side 4 smoothly, to improve the operational reliability of this quantitative liquid getting device.
The utility model also devises some can significantly improve this liquid getting device practicality and the structure in serviceable life, as metering cylinder 5, piston rod 6 and get liquid end 1 and drain side 4 is glassware, the part of this liquid comes into contact such as instrument and chemical reagent all adopts glassware like this, the corrosion resistance of liquid getting device can be improved, improve serviceable life.
Get liquid instrument at present and may affect measuring accuracy because of factors such as corrosion, this is the common issue that existing liquid getting device exists, and traditional liquid getting device is keep higher to get liquid precision, generally regulation access times or need in the time to discard, even occur disposable liquid getting device, this causes a large amount of wastes; And the utility model only needs to operate through simple modifications when first use, within whole serviceable life, just can keep high-precision quantitative liquid getting; Concrete correction operating process is that usable criterion liquid is revised, for distilled water:
Under defined terms, an electrical condenser is positioned on the pallet of analytical balance, after stable, balance is reset.According to the quality of distilled water and the corresponding relation of volume known, in container, 1mL, 2mL, 3mL is injected respectively successively with the utility model ... distilled water, correspondence is shown 1g, 2g, 3g by balance simultaneously ... corresponding mass indicating value, balance indicating value that the distilled water quality that the utility model reduces is corresponding, according to the relation of distilled water quality and volume, demarcate the utility model metering cylinder 5 high scale line, and then the position of adjustment metering limited block 9 and metering cylinder 5 high scale line, with round-off error.The utility model can be applicable to the quantitative extraction of the liquid such as high viscosity, highly corrosive, also can be widely used in the fields such as more complicated sewage quantitatively extracts, water quality is cleared up.
Claims (8)
1. an adjustable liquid proportional sampling device, it comprises metering cylinder (5) and is positioned at the piston rod (6) of metering cylinder (5) for liquid assimilating and discharge, described metering cylinder (5) is communicated with and gets liquid end (1) and drain side (4), it is characterized in that, the upper end of described piston rod (6) is provided with top cover (7), top cover (7) is fixed with a limit guide rail (8), this limit guide rail (8) along piston rod (6) telescopic direction, and walks abreast with piston rod (6); This limit guide rail (8) is provided with the metering limited block (9) coordinating with metering cylinder (5) high scale, sample liquid quantitative for metering cylinder (5).
2. adjustable liquid proportional sampling device as claimed in claim 1, it is characterized in that, described metering limited block (9) is slided along limit guide rail (8), and is fixed in limit guide rail (8) by position fixed knob (10).
3. adjustable liquid proportional sampling device as claimed in claim 2, it is characterized in that, the upper end of described metering cylinder (5) is provided with flange (501), the upper plane card (902) of metering limited block (9) is when this flange (501), and its lower plane (901) is concordant with the zero graduation line of metering cylinder (5).
4. adjustable liquid proportional sampling device as claimed in claim 3, is characterized in that, the end of described limit guide rail (8) is the positive stop end (11) for limiting metering limited block (9) maximum sliding position.
5. as the adjustable liquid proportional sampling device in claim 1-4 as described in any one, it is characterized in that, the first retaining valve (2) and the second retaining valve (3) is respectively equipped with in the described pipeline getting liquid end (1) and drain side (4), and when the open and-shut mode of the first retaining valve (2) and the second retaining valve (3) is contrary.
6. adjustable liquid proportional sampling device as claimed in claim 5, it is characterized in that, the lower end of described metering cylinder (5) is provided with and coordinates with liquid bottle mouth, for the sealing jam (12) that liquid bottles temporary sealing and minimizing evaporate.
7. adjustable liquid proportional sampling device as claimed in claim 6, is characterized in that, described sealing jam (12) is also provided with the air admission hole (14) be communicated with liquid bottles.
8. adjustable liquid proportional sampling device as claimed in claim 7, is characterized in that, described metering cylinder (5), piston rod (6) and get liquid end (1) and drain side (4) are glassware.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520579347.6U CN204831844U (en) | 2015-08-04 | 2015-08-04 | Liquid proportional sampling device with adjustable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520579347.6U CN204831844U (en) | 2015-08-04 | 2015-08-04 | Liquid proportional sampling device with adjustable |
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| Publication Number | Publication Date |
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| CN204831844U true CN204831844U (en) | 2015-12-02 |
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| CN201520579347.6U Active CN204831844U (en) | 2015-08-04 | 2015-08-04 | Liquid proportional sampling device with adjustable |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547763A (en) * | 2016-01-29 | 2016-05-04 | 福州大学 | Double-one-way-valve sampling needle and sampling method thereof |
| CN106442011A (en) * | 2016-11-18 | 2017-02-22 | 嘉善毅诚增塑制品有限公司 | Hand-pulling type sampling equipment |
| CN106770256A (en) * | 2017-01-12 | 2017-05-31 | 贵州大学 | One kind determines alkali-hydrolyzable nitrogen process mesoboric acid adding set and its adding method |
| CN107356451A (en) * | 2016-05-09 | 2017-11-17 | 中煤科工集团武汉设计研究院有限公司 | The anti-blocking slurry sampler of variable |
| CN109781463A (en) * | 2018-12-30 | 2019-05-21 | 浙江省海洋水产研究所 | Quantitative watering syringe |
| CN112985907A (en) * | 2021-02-19 | 2021-06-18 | 上海艾瑞德生物科技有限公司 | Pre-charging type quantitative suction dilution sample adding device |
-
2015
- 2015-08-04 CN CN201520579347.6U patent/CN204831844U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547763A (en) * | 2016-01-29 | 2016-05-04 | 福州大学 | Double-one-way-valve sampling needle and sampling method thereof |
| CN107356451A (en) * | 2016-05-09 | 2017-11-17 | 中煤科工集团武汉设计研究院有限公司 | The anti-blocking slurry sampler of variable |
| CN106442011A (en) * | 2016-11-18 | 2017-02-22 | 嘉善毅诚增塑制品有限公司 | Hand-pulling type sampling equipment |
| CN106770256A (en) * | 2017-01-12 | 2017-05-31 | 贵州大学 | One kind determines alkali-hydrolyzable nitrogen process mesoboric acid adding set and its adding method |
| CN109781463A (en) * | 2018-12-30 | 2019-05-21 | 浙江省海洋水产研究所 | Quantitative watering syringe |
| CN109781463B (en) * | 2018-12-30 | 2021-06-22 | 浙江省海洋水产研究所 | Quantitative water adding injector |
| CN112985907A (en) * | 2021-02-19 | 2021-06-18 | 上海艾瑞德生物科技有限公司 | Pre-charging type quantitative suction dilution sample adding device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |