CN109225118B - Multi-channel laboratory device capable of automatically adjusting pH value - Google Patents
Multi-channel laboratory device capable of automatically adjusting pH value Download PDFInfo
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- CN109225118B CN109225118B CN201811032638.8A CN201811032638A CN109225118B CN 109225118 B CN109225118 B CN 109225118B CN 201811032638 A CN201811032638 A CN 201811032638A CN 109225118 B CN109225118 B CN 109225118B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/28—Moving reactors, e.g. rotary drums
- B01J19/285—Shaking or vibrating reactors; reactions under the influence of low-frequency vibrations or pulsations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
Abstract
The invention discloses a multichannel laboratory device capable of automatically adjusting a pH value, and aims to provide a multichannel laboratory device capable of automatically adding acid or alkali to adjust the pH value of a required solution and improving the adjustment precision and consistency of the pH value of the solution. The device comprises an experiment table, a pump arranged on the experiment table, a feeding component connected with an inlet of the pump, a discharging component connected with an outlet of the pump, a blending cup, a recovery cup and a plurality of raw material storage cups, wherein the blending cup, the recovery cup and the raw material storage cups are arranged on the experiment table. The feeding assembly comprises a connector connected with an inlet of the pump, an emptying connector communicated with the connector and a plurality of feeding connectors corresponding to the raw material storage cups one to one. The discharging assembly comprises a discharging pipe, a first limiting block and a second limiting block which are arranged on the inner side face of the discharging pipe, a piston which is arranged in the discharging pipe in a sliding mode and located between the first limiting block and the second limiting block, and a first discharging joint, a second discharging joint and a third discharging joint which are arranged on the outer side face of the discharging pipe.
Description
Technical Field
The invention relates to a laboratory device, in particular to a multi-channel laboratory device capable of automatically adjusting a pH value.
Background
The pH value is one of the most important physicochemical parameters of the aqueous solution, and the pH value adjustment of the solution is the basic operation in the biological and chemical experimental processes. Generally, the pH value of a solution in a laboratory is mainly monitored by using a pH sensor and is adjusted by manually adding acid or alkali, however, on one hand, the addition amount of acid and alkali is difficult to control by manually adding acid or alkali, and the volume of the original solution can be changed by adding excessive acid and alkali; on the other hand, the manual addition of acid and base may cause errors between samples, and when there are many samples, the operation is time-consuming and laborious.
Disclosure of Invention
The invention aims to provide a multi-channel laboratory device capable of automatically adjusting the pH value, which can automatically adjust the pH value of a required solution by adding acid or alkali and improve the adjustment precision and consistency of the pH value of the solution.
The technical scheme of the invention is as follows:
a multi-channel laboratory device capable of automatically adjusting pH value comprises a laboratory table, a pump arranged on the laboratory table, a feeding assembly connected with an inlet of the pump, a discharging assembly connected with an outlet of the pump, a blending cup, a recovery cup and a plurality of raw material storage cups, wherein the blending cup, the recovery cup and the raw material storage cups are arranged on the laboratory table; the discharging assembly comprises a discharging pipe, a first limiting block and a second limiting block which are arranged on the inner side surface of the discharging pipe, a piston which is arranged in the discharging pipe in a sliding mode and located between the first limiting block and the second limiting block, and a first discharging joint, a second discharging joint and a third discharging joint which are arranged on the outer side surface of the discharging pipe, wherein the first end of the discharging pipe is connected with an outlet of the pump, the second end of the discharging pipe is closed, an air hole is formed in the end surface of the second end of the discharging pipe, the first limiting block is close to the first end of the discharging pipe, the second limiting block and the first end of the discharging pipe are located on two opposite sides of the first limiting block, a resetting pressure spring is arranged between the second end of the discharging pipe and the piston, the first discharging joint, the second discharging joint and the third discharging joint are sequentially distributed along the axial direction of, the second discharging connector and the third discharging connector are located between the first limiting block and the second limiting block, the third discharging connector is located between the second discharging connector and the second limiting block, a first valve is arranged on the first discharging connector, the first discharging connector is communicated with the inner cavity of the recycling cup through a first discharging pipe, a third valve is arranged on the third discharging connector, the third discharging connector is communicated with the inner cavity of the recycling cup through a third discharging pipe, a second valve is arranged on the second discharging connector, and the second discharging connector is communicated with the inner cavity of the blending cup through a second discharging pipe.
The multichannel laboratory device capable of automatically adjusting the pH value can automatically add acid or alkali to adjust the pH value of the required solution, and the adjustment precision and consistency of the pH value of the solution are improved.
Preferably, the vortex oscillator is arranged on the experiment table and comprises an oscillating disc, and the blending cup is supported on the upper surface of the oscillating disc.
Preferably, a pH meter is further included for detecting the pH of the solution in the dispensing cup.
Preferably, the tapping pipe is arranged horizontally.
Preferably, there are two acid solution cups and two alkali solution cups.
The invention has the beneficial effects that: the pH value of the required solution can be adjusted by automatically adding acid or alkali, and the adjustment precision and consistency of the pH value of the solution are improved.
Drawings
FIG. 1 is a schematic diagram of a multi-channel laboratory apparatus for automatically adjusting pH according to the present invention.
Fig. 2 is a partial enlarged view of a portion a of fig. 1.
In the figure:
a laboratory bench 1;
a pump 2;
a blending cup 4;
a recovery cup 5;
a raw material storage cup 6, an acid liquor cup 6.1, an alkali liquor cup 6.2 and a water storage cup 6.3;
the device comprises a feeding assembly 7, a connector 7.1, an emptying connector 7.2, a feeding connector 7.3, an emptying valve 7.4 and a feeding valve 7.5;
the device comprises a discharge assembly 8, a discharge pipe 8.1, a piston 8.2, a first discharge joint 8.3, a second discharge joint 8.4, a third discharge joint 8.5, a first limit block 8.6, a second limit block 8.7, a reset pressure spring 8.8, a first valve 8.9, a second valve 8.10 and a third valve 8.11;
a feed pipe 9;
a first tapping pipe 10;
a third discharge pipe 11;
a second tapping pipe 12.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly explained and illustrated below with reference to the accompanying drawings, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present scheme, and are not construed as limiting the scheme of the present invention.
These and other aspects of embodiments of the invention will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the invention may be practiced, but it is understood that the scope of the embodiments of the invention is not limited thereby. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being 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. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections, either mechanical or electrical, or communicating with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The first embodiment is as follows: as shown in FIG. 1, a multi-channel laboratory device capable of automatically adjusting pH value comprises a laboratory table 1, a pH meter, a vortex oscillator 3 arranged on the laboratory table, a pump 2 arranged on the laboratory table, a feeding component 7 connected with an inlet of the pump, a discharging component 8 connected with an outlet of the pump, a mixing cup 4 arranged on the laboratory table, a recovery cup 5 and a plurality of raw material storage cups 6.
The vortex oscillator comprises an oscillating disc 3.1. The blending cup is supported on the upper surface of the oscillating plate.
A PH meter (not shown) is used to detect the PH of the solution in the dispensing cup.
The raw material storage cup comprises a water storage cup 6.3, a plurality of acid liquor cups 6.1 and a plurality of alkali liquor cups 6.2. In this embodiment, there are two acid solution cups and two alkaline solution cups. The acid liquor cups contain acid solutions, the acid solutions contained in the two acid liquor cups are different in acidity, one acid is stronger, and the other acid is weaker. Alkaline solutions are contained in the alkaline solution cups, the alkaline solutions contained in the two alkaline solution cups are different in alkalinity, one alkaline solution is stronger, and the other alkaline solution is weaker. The water storage cup contains water.
As shown in fig. 1 and 2, the feeding assembly includes a connector 7.1 connected to an inlet of the pump, an emptying connector 7.2 communicated with the connector, and a plurality of feeding connectors 7.3 corresponding to the material storage cups one to one.
The emptying joint is communicated with the outside air and is provided with an emptying valve 7.4.
The feeding joint is provided with a feeding valve 7.5, and the feeding joint is communicated with the inner cavity of the corresponding raw material storage cup through a feeding pipe 9.
The ejection of compact subassembly includes discharging pipe 8.1, sets up first stopper 8.6 and second stopper 8.7 on the discharging pipe medial surface, slides and sets up in the discharging pipe and lie in piston 8.2 between first stopper and the second stopper and set up first ejection of compact joint 8.3, second ejection of compact joint 8.4 and the third ejection of compact joint 8.5 on the discharging pipe lateral surface.
The discharge pipe is horizontally arranged. The first end of the discharge pipe is connected with the outlet of the pump, the second end of the discharge pipe is closed, and the end face of the second end of the discharge pipe is provided with a vent hole.
The first stopper is close to the first end of discharging pipe, and the second stopper is located the relative both sides of first stopper with the first end of discharging pipe, is equipped with pressure spring 8.8 that resets between the second end of discharging pipe and the piston. One end of the reset pressure spring is abutted against the second end of the discharge pipe, and the other end of the reset pressure spring is abutted against the end face of the piston.
First ejection of compact connects, second ejection of compact connects and the third ejection of compact connects and distributes along the axial of discharging pipe in proper order, and first ejection of compact connects and is located between the first end of first stopper and discharging pipe. The second discharging joint and the third discharging joint are located between the first limiting block and the second limiting block, and the third discharging joint is located between the second discharging joint and the second limiting block.
When the piston is abutted to the second limiting block, the first discharging joint, the second discharging joint and the third discharging joint are located on the same side of the piston.
When the piston is abutted against the first limiting block, the first discharging connector and the second discharging connector are positioned on two opposite sides of the piston.
The first discharging joint is provided with a first valve 8.9, and the first discharging joint is communicated with the inner cavity of the recovery cup through a first discharging pipe 10.
And a third valve 8.11 is arranged on the third discharge joint, and the third discharge joint is communicated with the inner cavity of the recovery cup through the third discharge pipe 11.
The second discharge joint is provided with a second valve 8.10, and the second discharge joint is communicated with the inner cavity of the blending cup through a second discharge pipe 12.
In this embodiment, the emptying valve, the feeding valve, the first valve, the second valve and the third valve are all electromagnetic switch valves.
The multichannel laboratory device capable of automatically adjusting the pH value of the embodiment is specifically used as follows:
firstly, according to the pH value of the required solution (hereinafter, an acid solution with the pH value adjusted to be less than 7 is taken as an example for description), a part of the acid solution in the acid cup is taken as an example for description, and an acid solution with the pH value adjusted to be less than 7 is taken as an example for description;
closing the emptying valve, the first valve and the third valve, opening the second valve, opening the feeding valve on one feeding joint corresponding to the acid liquor cup, and closing the feeding valves on the other feeding joints;
secondly, starting a pump, pumping the acidic solution in one acid liquor cup into the discharge pipe from the first end of the discharge pipe through the corresponding feed pipe, moving the piston towards the second end of the discharge pipe until the piston abuts against the second limiting block, enabling the acidic solution to flow into the blending cup through the second discharge joint and the second discharge pipe at the moment, and measuring the pH value of the acidic solution in the blending cup through a pH meter. When the acid solution in the blending cup reaches a set amount, the pump stops working.
Thirdly, closing the second valve and all the feeding valves, opening the emptying valve and the third valve, and then starting the pump; because the evacuation connects and is linked together with the outside air, at this moment, through the pump with the inside intake pump of outside air and the discharging tube, then discharge into the recovery cup through third valve and third discharging tube in, at this in-process, the acidic solution in the cavity of pump and the discharging tube will be emptied, avoid acidic solution to remain in the cavity of pump and the discharging tube, and when influence next alkaline solution gets into the cavity of pump and in the discharging tube, take place the reaction with remaining acidic solution, change the basicity of alkaline solution, finally influence allotment efficiency and allotment accuracy.
Then, the pump stops working, simultaneously, the emptying valve, the second valve, the third valve and all the feeding valves are closed, and the first valve is opened; at this moment, the piston will move toward the first end of discharging pipe under the effect of pressure spring that resets, until the piston supports on first stopper, at this in-process that the piston removed, the piston thoroughly extrudees the adnexed acid solution on the medial surface of discharging pipe between the first end of piston and discharging pipe and discharge to the recovery cup in through first ejection of compact joint and first discharging pipe, thereby thoroughly clear up the discharging pipe, avoid acid solution to remain in the discharging pipe, and influence allotment efficiency and allotment accuracy.
Fourthly, closing the emptying valve, the first valve and the third valve, opening the second valve, opening the feeding valve on one feeding joint corresponding to the alkali liquor cup, and closing the feeding valves on the other feeding joints;
then, the vortex oscillator and the pump are started (if the vibration amplitude of the blending cup is large, the blending cup can be held by an operator, or the vibration of the blending cup can be fixed by an auxiliary clamp, so that the blending cup is prevented from moving and falling), so that the alkaline solution in one alkaline cup is pumped into the discharge pipe from the first end of the discharge pipe through the corresponding feed pipe, and the piston moves towards the second end of the discharge pipe until the piston abuts against the second limiting block, at the moment, the alkaline solution flows into the blending cup through the second discharge joint and the second discharge pipe, and the alkaline solution and the acidic solution are fully mixed through the vortex oscillator, the pH of the acidic solution in the preparation cup is measured by a pH meter, and the pump is stopped when the pH of the acidic solution in the preparation cup gradually increases and approaches a predetermined pH (for example, when the difference between the pH of the acidic solution in the preparation cup and the predetermined pH is 0.1).
Fifthly, closing the second valve and all the feeding valves, opening the emptying valve and the third valve, and then starting the pump; because the evacuation connects and is linked together with the outside air, at this moment, through in pump with outside air suction pump and discharging tube, then discharge into the recovery cup through third valve and third discharging tube, at this in-process, the alkaline solution in the cavity of pump and discharging tube will be emptied, avoids alkaline solution to remain in the cavity of pump and discharging tube, influences allotment efficiency and allotment accuracy.
Then, the pump stops working, simultaneously, the emptying valve, the second valve, the third valve and all the feeding valves are closed, and the first valve is opened; at this moment, the piston will move toward the first end of discharging pipe under the effect of pressure spring that resets, until the piston supports on first stopper, at this in-process that the piston removed, the piston thoroughly extrudees the adnexed alkaline solution on the medial surface of discharging pipe between the first end of piston and discharging pipe and discharge to the recovery cup in through first ejection of compact joint and first discharging pipe to thoroughly clear up the discharging pipe, avoid alkaline solution to remain in the discharging pipe, and influence allotment efficiency and allotment accuracy.
Sixthly, closing the emptying valve, the first valve and the third valve, opening the second valve, opening the feeding valve on one feeding joint corresponding to the water storage cup, and closing the feeding valves on the other feeding joints;
then, the vortex oscillator and the pump are started (if the vibration amplitude of the blending cup is large, the blending cup can be held by an operator, or the vibration of the blending cup can be fixed by an auxiliary clamp, so that the blending cup is prevented from moving and falling), so that the water in the water storage cup is pumped into the discharge pipe from the first end of the discharge pipe through the corresponding feed pipe, and the piston moves towards the second end of the discharge pipe until the piston abuts against the second limiting block, at the moment, water flows into the blending cup through the second discharge joint and the second discharge pipe, and the alkaline solution and the acidic solution are fully mixed through the vortex oscillator, then measuring the pH value of the acidic solution in the blending cup by a pH meter until the pH value of the acidic solution in the blending cup reaches a set value, then the pump stops working, so that the pH value of the required solution is adjusted by automatically adding acid or alkali, and the adjustment precision and consistency of the pH value of the solution are improved.
Seventhly, closing the second valve and all the feeding valves, opening the emptying valve and the third valve, and then starting the pump; because the evacuation connects and is linked together with the outside air, at this moment, through in pump with outside air suction pump and discharging tube, then discharge into the recovery cup through third valve and third discharging tube, at this in-process, the water in the cavity of pump and discharging tube will be emptied, avoids water to remain in the cavity of pump and discharging tube, influences allotment efficiency and allotment accuracy.
Then, the pump stops working, simultaneously, the emptying valve, the second valve, the third valve and all the feeding valves are closed, and the first valve is opened; at the moment, the piston moves towards the first end of the discharge pipe under the action of the reset pressure spring until the piston abuts against the first limiting block.
Claims (4)
1. A multi-channel laboratory device capable of automatically adjusting pH value is characterized by comprising a laboratory table, a pump arranged on the laboratory table, a feeding component connected with an inlet of the pump, a discharging component connected with an outlet of the pump, a blending cup arranged on the laboratory table, a pH meter for detecting the pH value of a solution in the blending cup, a recovery cup and a plurality of raw material storage cups, wherein the raw material storage cups comprise a water storage cup, a plurality of acid liquid cups and a plurality of alkali liquid cups,
the feeding assembly comprises a connector connected with an inlet of the pump, an emptying connector communicated with the connector and a plurality of feeding connectors in one-to-one correspondence with the raw material storage cups, the emptying connector is communicated with the outside air, an emptying valve is arranged on the emptying connector, a feeding valve is arranged on the feeding connector, and the feeding connectors are communicated with inner cavities of the corresponding raw material storage cups through feeding pipes;
the discharging component comprises a discharging pipe, a first limiting block and a second limiting block which are arranged on the inner side surface of the discharging pipe, a piston which is arranged in the discharging pipe in a sliding manner and is positioned between the first limiting block and the second limiting block, and a first discharging joint, a second discharging joint and a third discharging joint which are arranged on the outer side surface of the discharging pipe,
the first end of the discharge pipe is connected with the outlet of the pump, the second end of the discharge pipe is closed, the end face of the second end of the discharge pipe is provided with a vent hole, the first limiting block is close to the first end of the discharge pipe, the second limiting block and the first end of the discharge pipe are positioned at two opposite sides of the first limiting block, a reset pressure spring is arranged between the second end of the discharge pipe and the piston,
the first discharge joint, the second discharge joint and the third discharge joint are sequentially distributed along the axial direction of the discharge pipe, the first discharge joint is positioned between the first limiting block and the first end of the discharge pipe, the second discharge joint and the third discharge joint are positioned between the first limiting block and the second limiting block, the third discharge joint is positioned between the second discharge joint and the second limiting block,
the first discharging connector is provided with a first valve, the first discharging connector is communicated with the inner cavity of the recycling cup through a first discharging pipe, the third discharging connector is provided with a third valve, the third discharging connector is communicated with the inner cavity of the recycling cup through a third discharging pipe, the second discharging connector is provided with a second valve, and the second discharging connector is communicated with the inner cavity of the blending cup through a second discharging pipe.
2. The apparatus of claim 1, further comprising a vortex shaker disposed on the laboratory bench, the vortex shaker comprising an oscillating plate, the mixing cup supported on an upper surface of the oscillating plate.
3. An automatically pH adjustable multi-channel laboratory apparatus according to claim 1 or 2, wherein the discharge duct is horizontally disposed.
4. The multi-channel laboratory device capable of automatically adjusting pH value according to claim 1 or 2, wherein there are two acid solution cups and two alkali solution cups.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811032638.8A CN109225118B (en) | 2018-09-05 | 2018-09-05 | Multi-channel laboratory device capable of automatically adjusting pH value |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811032638.8A CN109225118B (en) | 2018-09-05 | 2018-09-05 | Multi-channel laboratory device capable of automatically adjusting pH value |
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| CN109225118A CN109225118A (en) | 2019-01-18 |
| CN109225118B true CN109225118B (en) | 2020-08-14 |
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| US9308508B2 (en) * | 2013-07-22 | 2016-04-12 | Kianoosh Peyvan | Sequential delivery device and method |
| CN204737771U (en) * | 2015-06-07 | 2015-11-04 | 厦门市吉龙德环境工程有限公司 | Adjust water quality analysis front processor of pH valve on line |
| CN106830265A (en) * | 2017-03-30 | 2017-06-13 | 中国核动力研究设计院 | A kind of pH value automatic regulating system |
| CN206676371U (en) * | 2017-04-26 | 2017-11-28 | 金溪斯普瑞药业有限公司 | A kind of pharmaceutical intermediate reactor of quantifying feed |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103521123A (en) * | 2013-10-11 | 2014-01-22 | 长兴埃克森科技有限公司 | Automatic preparation system for dilute sulfuric acid |
| JP2018094545A (en) * | 2016-12-07 | 2018-06-21 | コリア インスティチュート オブ エナジー リサーチ | Manufacturing method of core-shell catalyst and manufacturing device thereof |
| CN106943934A (en) * | 2017-04-21 | 2017-07-14 | 滁州钰禾文具制品有限公司 | A kind of medical packaging produces printing color conditioning device |
| CN107537427A (en) * | 2017-09-27 | 2018-01-05 | 深圳润丰投资咨询有限公司 | A kind of large-scale experiment room equivalent chemical reagent mixed reactor |
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