CN114768671B - Solution preparation and split charging device - Google Patents
Solution preparation and split charging device Download PDFInfo
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- CN114768671B CN114768671B CN202210261338.7A CN202210261338A CN114768671B CN 114768671 B CN114768671 B CN 114768671B CN 202210261338 A CN202210261338 A CN 202210261338A CN 114768671 B CN114768671 B CN 114768671B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 49
- 239000007788 liquid Substances 0.000 claims abstract description 221
- 238000002156 mixing Methods 0.000 claims abstract description 26
- 239000000243 solution Substances 0.000 claims description 135
- 238000006073 displacement reaction Methods 0.000 claims description 39
- 239000002699 waste material Substances 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 17
- 238000000926 separation method Methods 0.000 claims description 13
- 239000011259 mixed solution Substances 0.000 claims description 10
- 238000004806 packaging method and process Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 4
- 230000001960 triggered effect Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 231100000331 toxic Toxicity 0.000 abstract description 10
- 230000002588 toxic effect Effects 0.000 abstract description 10
- 238000002474 experimental method Methods 0.000 description 9
- 238000004140 cleaning Methods 0.000 description 7
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 238000001514 detection method Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 238000002123 RNA extraction Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 229960000583 acetic acid Drugs 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 230000037005 anaesthesia Effects 0.000 description 2
- 238000010171 animal model Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000001962 electrophoresis Methods 0.000 description 2
- 239000012362 glacial acetic acid Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
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- 230000008094 contradictory effect Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/84—Mixing plants with mixing receptacles receiving material dispensed from several component receptacles, e.g. paint tins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
- B01F35/7174—Feed mechanisms characterised by the means for feeding the components to the mixer using pistons, plungers or syringes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
- B01F35/71745—Feed mechanisms characterised by the means for feeding the components to the mixer using pneumatic pressure, overpressure, gas or air pressure in a closed receptacle or circuit system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/75—Discharge mechanisms
- B01F35/754—Discharge mechanisms characterised by the means for discharging the components from the mixer
- B01F35/75425—Discharge mechanisms characterised by the means for discharging the components from the mixer using pistons or plungers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
- B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
- B01F35/883—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise using flow rate controls for feeding the substances
Abstract
The invention discloses a solution preparation and split charging device, which comprises a liquid preparation component, a liquid preparation component and a liquid distribution component, wherein the liquid preparation component comprises a plurality of first liquid outlet devices; the liquid preparation assembly comprises a first chamber, wherein the first chamber is communicated with liquid outlets of a plurality of first liquid outlet devices, and a mixing device is arranged in the first chamber and is used for mixing and preparing different solutions from the plurality of first liquid outlet devices; the liquid separating device comprises a second liquid outlet device, and a liquid inlet of the second liquid outlet device is communicated with the first chamber; the first liquid outlet device and the second liquid outlet device are both provided with a second cavity, the second cavity is provided with a liquid inlet and a liquid outlet, the liquid outlet is provided with an overflow valve, and a liquid pushing assembly is arranged in the second cavity. The invention aims to solve the problems of low efficiency and great harm of manual split charging of the existing toxic and volatile solution.
Description
Technical Field
The invention relates to the technical field of chemical solution preparation, in particular to a solution preparation and split charging device.
Background
The development in the fields of biochemistry and the like is not separated from various professional tests which are completed in a laboratory by laboratory staff, and along with the expansion of knowledge, solvents which are harmful to human bodies and are volatile are inevitably used in the experimental process, such as concentrated hydrochloric acid, concentrated nitric acid, glacial acetic acid, methanol, concentrated ammonia water, diethyl ether, acetone, chloroform and other solutions, and the laboratory is toxic or highly corrosive, has a pungent smell, is easy to volatilize, and is mostly used for adjusting the pH value of the solution, electrophoresis buffer, silver mirror reaction, anesthesia of experimental animals, wiping microscope oil mirrors, tissue fixation, RNA extraction experiments and the like. However, because such toxic solutions are extremely volatile and have some toxicity that is dangerous to human health, they generally need to be formulated and used immediately prior to the start of the experiment. The solution is prepared by using the modes of measuring volume by using a measuring cylinder, uniformly mixing by using a beaker and stirring by using a glass rod, so that great burden is brought to experimental preparation, and toxic solution volatilized in the preparation process can also form a certain hazard to the body of an experimenter. Besides the scientific research experiments, a large amount of toxic volatile solutions are required to be prepared, students in the teaching experiments are numerous in number, the required amount is very large, the workload of manually preparing the solutions by experimenters is large, the precision is difficult to ensure, and the problems of poor precision, low efficiency and great harm exist.
Disclosure of Invention
The invention mainly aims to provide a solution preparation and split charging device, and aims to solve the problems of poor precision, low efficiency and large harm of manual split charging of the existing toxic and volatile solution preparation and split charging.
In order to achieve the above object, the present invention provides a solution dispensing and packaging device, wherein the solution dispensing and packaging device includes:
the liquid preparation assembly comprises a plurality of first liquid outlet devices, wherein each first liquid outlet device is used for controlling a certain amount of a solution to flow out;
the liquid preparation assembly comprises a first chamber, wherein the first chamber is communicated with liquid outlets of a plurality of first liquid outlet devices, and a mixing device is arranged in the first chamber and is used for mixing and preparing different solutions from the plurality of first liquid outlet devices; the method comprises the steps of,
the liquid separation assembly comprises a second liquid outlet device, a liquid inlet of the second liquid outlet device is communicated with the first chamber, and the second liquid outlet device is used for controlling outflow of a quantitative mixed solution;
the first liquid outlet device and the second liquid outlet device are both provided with a second cavity, the second cavity is provided with a liquid inlet and a liquid outlet, the liquid outlet is provided with an overflow valve, a liquid pushing component is arranged in the second cavity and is used for pushing quantitative solution to the liquid outlet so as to open the overflow valve to enable the solution to flow out.
Optionally, a flow sensing device is arranged in the second chamber and is used for detecting the flow of the liquid flowing out of the second chamber.
Optionally, the second cavity is cylindric setting, and the sectional area is S, the liquid outlet with the inlet set up in the one end of second cavity, the pushing away liquid subassembly includes:
the piston rod is arranged at the end part of the other end of the second chamber and can be movably arranged along the axis direction of the second chamber; the method comprises the steps of,
the driving assembly is used for driving the piston rod to move towards the liquid outlet;
the flow sensing device comprises a displacement sensor fixed on the piston rod and is used for detecting the distance L of the piston rod moving towards the liquid outlet, and the volume V=S.L of the outflow liquid.
Optionally, the driving assembly comprises an air pump, the air pump is communicated with the other end of the second chamber, and the air pump is used for providing air pressure to push the piston rod to move.
Optionally, the rated air pressure provided by the air pump is P, and the threshold pressure of the overflow valve is P 0 Then p=p 0 。
Optionally, an elastic structure is connected between the piston rod and the end of the other end of the second chamber;
the other end of the second chamber is also provided with an exhaust port, and the exhaust port is used for releasing pressure so that the elastic structure can drive the piston rod to return to the end part of the other end of the second chamber.
Optionally, the second chambers of the plurality of first liquid outlet devices are communicated with the same air pump.
Optionally, the second chamber is further communicated with a waste liquid tank, and when the waste liquid tank is opened, the solution in the second chamber can be recycled to the waste liquid tank.
Optionally, the waste liquid tank connected to the second chamber of the second liquid outlet device is further provided with a waste liquid outlet for communicating with a sewer.
Optionally, the mixing device comprises a stirrer.
According to the technical scheme, the liquid preparation assembly and the liquid separation assembly are arranged, one solution is respectively contained through the plurality of first liquid outlet devices in the liquid preparation assembly, when the liquid preparation assembly is required to be used, the independent use amount of each solution is given, the first liquid outlet devices are used for controlling the quantitative giving of the solutions to the liquid preparation assembly, the mixing devices in the liquid preparation assembly are used for mixing the plurality of solutions to prepare the required mixed solution, the mixed solution is led into the liquid separation assembly, and the quantitative solution is discharged through the second liquid outlet devices in the liquid separation assembly in each action, so that the quantitative separation of the solutions in the liquid separation assembly is realized. The quantitative and accurate preparation of various solutions and the quantitative split charging of the prepared solutions are realized through the integral device, the large-dose preparation requirement and the small-dose split charging distribution test requirement in the test process are met, the efficiency is high, meanwhile, the preparation split charging is not needed manually, the preparation process is completely closed, and the harmful volatile solution is prevented from being volatilized into the air to be inhaled or contacted by an experimenter to be damaged. Specifically, the first liquid outlet device and the second liquid outlet device are both provided with the second chamber, the liquid inlet of the second chamber of each first liquid outlet device is used for placing a single required solution, the liquid outlet is communicated with the first chamber, and the liquid outlet is provided with the overflow valve for controlling the opening and closing of the liquid outlet so as to match with the liquid pushing component to realize control of liquid consumption, and compared with manual control, the liquid pushing device is more accurate; the liquid inlet of the second chamber of the second liquid outlet device is communicated with the first chamber, after the liquid preparation assembly prepares the solution, the solution is led into the second chamber of the second liquid outlet device, the liquid outlet of the second liquid outlet device is also provided with the overflow valve, and the liquid pushing assembly is matched to realize single quantitative discharge of the solution so as to realize liquid separation operation during liquid extraction of experiments.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a simplified schematic plan view of an embodiment of a solution dispensing apparatus according to the present invention.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The development in the fields of biochemistry and the like is not separated from various professional tests which are completed in a laboratory by laboratory staff, and along with the expansion of knowledge, solvents which are harmful to human bodies and are volatile are inevitably used in the experimental process, such as concentrated hydrochloric acid, concentrated nitric acid, glacial acetic acid, methanol, concentrated ammonia water, diethyl ether, acetone, chloroform and other solutions, and the laboratory is toxic or highly corrosive, has a pungent smell, is easy to volatilize, and is mostly used for adjusting the pH value of the solution, electrophoresis buffer, silver mirror reaction, anesthesia of experimental animals, wiping microscope oil mirrors, tissue fixation, RNA extraction experiments and the like. However, because such toxic solutions are extremely volatile and have some toxicity that is dangerous to human health, they generally need to be formulated and used immediately prior to the start of the experiment. The solution is prepared by using the modes of measuring volume by using a measuring cylinder, uniformly mixing by using a beaker and stirring by using a glass rod, so that great burden is brought to experimental preparation, and toxic solution volatilized in the preparation process can also form a certain hazard to the body of an experimenter. Besides the scientific research experiments, a large amount of toxic volatile solutions are required to be prepared, students in the teaching experiments are numerous in number, the required amount is very large, the workload of manually preparing the solutions by experimenters is large, the precision is difficult to ensure, and the problems of poor precision, low efficiency and great harm exist.
In view of this, the present invention provides a solution dispensing and dispensing device, and fig. 1 is an embodiment of the solution dispensing and dispensing device provided by the present invention, and the solution dispensing and dispensing device will be described below with reference to specific drawings.
Referring to fig. 1, the solution dispensing and packaging device 100 includes a solution preparing assembly 1, a solution preparing assembly 2, and a solution separating assembly 3, wherein the solution preparing assembly 1 includes a plurality of first solution outlet devices 11, each of the first solution outlet devices 11 is configured to control a predetermined amount of a solution to flow out; the liquid dispensing assembly 2 comprises a first chamber 21, wherein the first chamber 21 is communicated with liquid outlets 42 of a plurality of first liquid outlet devices 11, a mixing device 22 is arranged in the first chamber 21, and the mixing device 22 is used for mixing and dispensing different solutions from the plurality of first liquid outlet devices 11; the liquid separating assembly 3 comprises a second liquid outlet device 31, a liquid inlet 41 of the second liquid outlet device 31 is communicated with the first chamber 21, and the second liquid outlet device 31 is used for controlling the outflow of a fixed amount of mixed solution; the first liquid outlet device 11 and the second liquid outlet device 31 are both provided with a second chamber 4, the second chamber 4 is provided with a liquid inlet 41 and a liquid outlet 42, the liquid outlet 42 is provided with an overflow valve 421, a liquid pushing component 43 is disposed in the second chamber 4, and the liquid pushing component 43 is configured to push a quantitative solution to the liquid outlet 42 to open the overflow valve 421 so as to make the solution flow out.
In the technical scheme of the invention, the liquid preparation assembly 1, the liquid preparation assembly 2 and the liquid separation assembly 3 are arranged, one solution is respectively contained in the plurality of first liquid outlet devices 11 in the liquid preparation assembly 1, when the liquid preparation assembly is required to be used, the independent use amount of each solution is given, the first liquid outlet devices 11 are used for controlling the quantitative giving of the solution to the liquid preparation assembly 2, the mixing devices 22 in the liquid preparation assembly 2 are used for mixing the plurality of solutions to prepare the required mixed solution, the mixed solution is led into the liquid separation assembly 3, and the quantitative giving of the solution in the liquid separation assembly 3 is realized by controlling the quantitative giving out of the solution in each action through the second liquid outlet devices 31 in the liquid separation assembly 3. The quantitative and accurate preparation of various solutions and the quantitative split charging of the prepared solutions are realized through the integral device, the large-dose preparation requirement and the small-dose split charging distribution test requirement in the test process are met, the efficiency is high, meanwhile, the preparation split charging is not needed manually, the preparation process is completely closed, and the harmful volatile solution is prevented from being volatilized into the air to be inhaled or contacted by an experimenter to be damaged. Specifically, the first liquid outlet device 11 and the second liquid outlet device 31 are both provided with the second chamber 4, the liquid inlet 41 of the second chamber 4 of each first liquid outlet device 11 is used for placing a single required solution, the liquid outlet 42 is communicated with the first chamber 21, and the liquid outlet 42 is provided with the overflow valve 421 to control the opening and closing of the liquid outlet 42 so as to cooperate with the liquid pushing component 43 to realize control of the liquid dosage, which is more accurate than manual control; the liquid inlet 41 of the second chamber 4 of the second liquid outlet device 31 is communicated with the first chamber 21, the solution is introduced into the second chamber 4 of the second liquid outlet device 31 after the solution is prepared by the solution preparing assembly 2, the liquid outlet 42 of the second liquid outlet device 31 is also provided with the overflow valve 421, and the liquid pushing assembly 43 is matched to realize single quantitative discharge of the solution, so as to realize liquid separation operation during experimental liquid taking.
It should be noted that, the liquid inlets 41 of the first liquid outlet device 11 and the second liquid outlet device 31 are respectively provided with a valve body capable of being controlled to be opened and closed, and the valve body can be a valve body controlled manually or an electromagnetic valve, and in this embodiment, the electromagnetic valve is adopted, so that on one hand, the operation can be performed through remote electrical connection, no additional operation area is required, and the installation and the use are convenient; on the other hand, the control expansibility is realized, for example, a program is set to realize the automatic operation of the whole flow, a monitoring system is additionally arranged to automatically monitor the state of each valve body, and the like, so that the automatic control is realized.
Further, a flow sensing device 44 is provided in the second chamber 4 for detecting the flow of the liquid flowing out of the second chamber 4. The second chamber 4 may be made of a non-transparent material or the installation position of the second chamber 4 may be located at a non-visible position, monitoring of the solution dosage cannot be achieved by setting scales on the second chamber 4, and the accuracy of manual visual detection is not very high, in this embodiment, the flow sensing device 44 is arranged in the second chamber 4 to automatically detect the flow dosage, so that on one hand, manual participation is not needed, and the method is simple and quick; on the other hand, the precision is high, and the precision degree of preparation and split charging is improved. The type of the flow sensing device 44 may be a weight sensing device, and the total amount of the solution used is obtained by the weight difference of the second chamber 4; the flow valve may be one in which the total amount of the solution to be used is obtained by directly measuring the total amount of the flow rate passing through the valve body, and the amount of the solution to be used may be accurately obtained without limitation.
Specifically, the second chamber 4 is cylindrically disposed, and has a cross-sectional area S, the liquid outlet 42 and the liquid inlet 41 are disposed at one end of the second chamber 4, the liquid pushing assembly 43 includes a piston rod 431 and a driving assembly 432, and the piston rod 431 is disposed at an end of the other end of the second chamber 4 and is movably disposed along an axial direction of the second chamber 4; the driving component 432 is configured to drive the piston rod 431 to move toward the liquid outlet 42; the flow sensing device 44 includes a displacement sensor 44a fixed to the piston rod 431 for detecting a distance L of the piston rod 431 moving toward the liquid outlet 42, and the volume v=s·l of the flowing liquid. The second chamber 4 is configured to be similar to a syringe, and the piston rod 431 is used for pushing liquid, so that the syringe has the advantage that the piston rod 431 is tightly sealed when moving, and the displacement of the piston rod 431 can indirectly reflect the volume of the solution flowing out. Of course, the liquid pushing assembly 43 may be configured as a common liquid pushing rod, and the flow rate is measured by the flow valve or the weight sensing device, but on one hand, the installation is difficult, and on the other hand, the installation is easy, and compared with the present embodiment, the piston rod 431 is provided and the displacement sensor 44a is provided corresponding to the piston rod 431, so that the piston rod 431 is convenient to install, and the piston rod 431 cannot move at will when being pressed, and is difficult to be influenced by the external factors, so that the measurement accuracy is higher.
It should be noted that, the displacement sensor 44a may be configured to detect the displacement of the piston rod 431 by using a magnetic attraction structure, and the piston rod 431 in the second chamber 4 drives a structure outside the second chamber 4 to move synchronously, so that the displacement sensor 44a detects the structure outside the second chamber 4 to obtain the displacement of the piston rod 431, which is small in occupied area and convenient to install, but has a certain influence on measurement accuracy; it is also possible to detect the displacement of the portion of the piston rod 431 which does not extend into the second chamber 4, in which the accuracy is less affected but the length of the piston rod 431 is longer, and the installation space is large; other means, such as visual sensing, magnetic sensing, etc., may be adopted, and a sensing structure is provided on the piston rod 431, so that the displacement sensor 44a outside the second chamber 4 may sense the displacement of the piston rod 431 in the second chamber 4, which occupies a small area and has high precision, but is difficult to maintain after a fault. The above conditions are good and bad, but the displacement detection can be realized, the detection is not limited, and the detection can be selected according to actual use conditions.
Specifically, the driving assembly 432 includes an air pump 432a, the air pump 432a is communicated with the other end of the second chamber 4, and the air pump 432a is used for providing air pressure to push the piston rod 431 to move. The driving component can be a hydraulic rod, an air cylinder or an air pump, etc., in this embodiment, the driving component is set to the air pump 432a, and the air pump 432a provides stable air pressure to push the piston rod 431, so that on one hand, no additional mechanical structure is required for air pushing, and the installation and the use are convenient; on the other hand, the air pressure can ensure that the piston rod 431 is uniformly stressed, so that the problems of measurement deviation and even locking of the piston rod 431 caused by inclination of the piston rod 431 are avoided. If the piston rod 431 is driven by air pressure, that is, if it is necessary to ensure tightness, the displacement sensor 44a cannot detect the displacement of the piston rod 431, for example, by detecting the displacement of a portion of the piston rod 431 that does not extend into the second chamber 4.
Further, the air pump 432a provides a rated air pressure P, and the relief valve 421 has a threshold pressure P 0 Then p=p 0 . When the piston rod 431 is normally driven, the hydraulic pressure of the piston rod 431 on the side of the solution is equal to the threshold pressure of the overflow valve 421 under the control of the threshold pressure of the overflow valve 421, so the rated air pressure of the air pump 432a must be equal to or greater than the threshold pressure of the overflow valve 421, and the piston rod 431 will be driven to push the solution to open the overflow valve 421. If the rated air pressure of the air pump 432a is greater than the threshold pressure of the overflow valve 421, when the air pump 432a stops working, the air pressure on the side of the piston rod 431 pushed by the air drops, even if the air pressure drops very fast, the air pressure is greater than the air pressure on the other side of the piston rod 431, so that the overflow valve 421 cannot respond to closing in time after the air pump 432a is closed, and the problem of inaccurate preparation caused by excessive outflow solution is caused. Therefore, in this embodiment, the rated air pressure of the air pump 432a is set to be equal to the threshold pressure of the overflow valve 421, when the air pump 432a is opened in the normal operation process, the pressure at both sides of the piston rod 431 is equal to the rated air pressure of the air pump 432a and the threshold pressure of the overflow valve 421, the overflow valve 421 is opened, when the effluent solution reaches the required solution volume, the air pump 432a is immediately stopped, the air pressure at one side of the piston rod 431 pushed by the air is immediately lower than the threshold pressure of the overflow valve 421, so that the overflow valve 421 is rapidly closed to avoid the additional outflow of the solution due to inertia in the air pressure reducing process after the air pump 432a is stopped, thereby realizing the effect of improving the closing sensitivity of the overflow valve 421 and the accuracy of solution preparation or split charging in the pressure linkage of the overflow valve 421 and the air pump 432a.
In addition, an elastic structure 45 is connected between the piston rod 431 and the end of the other end of the second chamber 4; the other end of the second chamber 4 is further provided with an air outlet 46, and the air outlet 46 is used for releasing pressure so that the elastic structure 45 can drive the piston rod 431 to return to the end of the other end of the second chamber 4. By arranging the air outlet 46 to completely discharge the air pumped into the second chamber 4 by the air pump 432a, and simultaneously arranging the elastic structure 45, the piston rod 431 after the pushing solution flowing out is completed can be brought back to one side close to the air pump 432a, so as to maintain the maximization of the volume of the solution side of the second chamber 4, and simultaneously, the cleaning of the inner wall of the solution side is convenient to complete during cleaning, and the cleaning of the inner wall is prevented when the piston rod 431 is not returned. The elastic structure 45 may be a spring or elastic rubber, and in this embodiment, a spring structure is adopted, which is simple in structure, low in price, and strong in practicability.
In addition, the second chambers 4 of the plurality of first liquid outlet devices 11 communicate with the same air pump 432a. By driving the plurality of first liquid outlet devices 11 by one air pump 432a, on one hand, the number of the air pumps 432a is reduced to reduce the cost, and on the other hand, a valve body is synchronously arranged between the air pumps 432a and each first liquid outlet device 11, and by controlling the air supply direction of the air pumps 432a to control the sequence of mixing the solution in the first liquid outlet devices 11 into the first chamber 21, the error reaction, the dangerous reaction and the like which possibly occur due to different mixing sequences of the solution can be avoided. The second chamber 4 of the second liquid outlet device 31 uses the air pump 432a independently, and a valve body is also arranged between the air pump 432a and the second chamber 4, and is used for opening when the dispensing and dosing of the solution are needed, so that the air pressure pushes the piston rod 431 to flow out, the valve body is closed after the predetermined amount is reached, the air on the air side of the piston rod 431 is avoided overflowing at the air pump 432a, the pressure is kept strong, the piston rod 431 can keep standing, and when the next dispensing operation is performed, the valve body is opened, so that the piston rod 431 can continuously push in a continuous manner after the last dispensing operation, the same moving distance of the piston rod 431 detected by the displacement sensor 44a is ensured to be equal to the corresponding amount of mixed solution, the piston rod 431 is prevented from retreating after the one dispensing operation, and the displacement sensor 44a detects the same displacement when the dispensing operation is performed again, and the liquid outlet amount is reduced.
In addition, the second chamber 4 is further communicated with a waste liquid tank 5, and when the waste liquid tank 5 is opened, the solution in the second chamber 4 can be recovered to the waste liquid tank 5. Most solutions used in the laboratory cannot be directly discharged from the sewer, and special management measures are required, so in this embodiment, each of the second chambers 4 is communicated with a waste liquid tank 5, and the solution in the second chamber 4 is emptied through the waste liquid tank 5 to facilitate the cleaning of the second chamber 4 and the treatment of the waste liquid. The waste liquid tank 5 can be movably connected with the second chamber 4 so as to facilitate the removal of the waste liquid tank 5 filled with waste liquid for treatment; or may be fixedly connected to the second chamber 4, and provided with an additional treatment device and a discharge system for treating and discharging the waste liquid in the waste liquid tank 5. The former is convenient to operate, is convenient to manually conduct targeted treatment, and the latter is automatic to treat the waste liquid in the waste liquid tank 5, and is not limited herein.
Further, the waste liquid tank 5 to which the second chamber 4 of the second liquid discharging device 31 is connected is further provided with a waste liquid outlet 51 for communicating with a sewer. When the prepared solution can be directly discharged in the evaluation, the solution in the second chamber 4 of the second liquid outlet device 31 can be directly discharged, so that the waste liquid tank 5 is communicated with a sewer while the waste liquid tank 5 is arranged on the second chamber 4 of the second liquid outlet device 31, on one hand, when the solution which cannot be directly discharged is encountered, the waste liquid tank 5 can be detached for treatment, on the other hand, when the solution can be directly discharged, the solution can directly flow to the sewer through the waste liquid tank 5, the two treatment modes required by two conditions can be completed without additional arrangement structures, and the device is simple in structure and convenient to install.
Further, the mixing device 22 includes a stirrer 22a. The mixing device 22 may adopt a pneumatic mixing, a magnetic power mixing or a mechanical mixing mode, in this embodiment, the mixing device 22 is directly configured as a mechanical stirrer 22a, and the solution is stirred by rotating operation to achieve mixing.
In addition, the liquid outlet 42 of the second chamber 4 of the second liquid outlet device 31 is further provided with a flowmeter, and the flowmeter is disposed downstream of the overflow valve 421, so as to visually detect the flow of the solution flowing out, and the running condition of the solution dispensing and packaging device 100 is detected by referring to the detection, so that the flow monitoring and the equipment running maintenance detection are facilitated.
Specifically, the invention also provides an operation method for the solution preparation and packaging device 100, which comprises a preparation step, a packaging step and a cleaning step, wherein the preparation step comprises the following steps: firstly, determining the type of the required solution and the required volume of each solution, setting the displacement amount set by the displacement sensor 44a of each first liquid outlet device 11 according to the required volume, setting the threshold pressure of the overflow valve 421 according to the rated air pressure of the air pump 432a, placing each solution into the corresponding first liquid outlet device 11 to fill the second chamber 4, closing the second chamber 4, opening the displacement sensor 44a one by one according to the adding sequence of the solutions and communicating the air pump 432a, closing the valve body on the air path of the corresponding air pump 432a when the displacement sensor 44a detects that the piston rod 431 moves to the set displacement amount to complete the step of placing the first solution into the first chamber 21, sequentially opening the valve body on the air path of the air pump 432a of the second first liquid outlet device 11 to complete the step of placing the second solution, closing the first chamber 21 after sequentially completing the step of placing all the solutions, and opening the stirrer 22a for five minutes to stir the solution in the first chamber 21.
Further, the sub-packaging step includes: firstly, the volume of each solution to be dispensed is determined, the displacement amount set by the displacement sensor 44a of the second liquid outlet device 31 is set according to the required volume, the threshold pressure of the overflow valve 421 is set according to the rated air pressure of the air pump 432a, the valve body between the first chamber 21 and the second liquid outlet device 31 is opened to enable the uniformly mixed solution to be filled in the second chamber 4 of the second liquid outlet device 31, the displacement sensor 44a and the air pump 432a are closed, a containing vessel is placed when the solution is required to be obtained, the valve body on the air pump 432a is controlled to be opened, the displacement sensor 44a closes the valve body to complete a solution dispensing step when the piston rod 431 is detected to move to reach the set displacement amount, and the valve body on the air pump 432a is triggered again by replacing the containing vessel until the dispensing is finished continuously.
Still further, the cleaning step includes: opening the exhaust port 46 of each second chamber 4 to enable the piston rod 431 to return to an initial position under the tension of the elastic structure 45, opening each waste liquid tank 5 to collect and discharge the waste liquid in the second chamber 4, closing the waste liquid tank 5, controlling the opening and closing of the valve body to enable the first chamber 21 to be communicated with the plurality of second chambers 4 and integrally sealed to form an integral chamber, setting the threshold pressure of the overflow valve 421 of the first liquid outlet device 11 to be zero, selecting one first liquid outlet device 11 to open the liquid inlet 41 to fill clear water, enabling clear water to sequentially flow through the first chamber 21 to the plurality of second chambers 4, opening the waste liquid outlet 51 while opening the waste liquid tank 5 of the second liquid outlet device 31, enabling the flushed clear water to flow from the waste liquid tank 5 of the second liquid outlet device 31 to a sewer to complete cleaning of the solution dispensing device 100, and finally closing all valve bodies and the air pump 432a.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (5)
1. An operation method of a solution preparation and split charging device is characterized in that the solution preparation and split charging device comprises the following steps:
the liquid preparation assembly comprises a plurality of first liquid outlet devices, wherein each first liquid outlet device is used for controlling a certain amount of a solution to flow out;
the liquid preparation assembly comprises a first chamber, wherein the first chamber is communicated with liquid outlets of a plurality of first liquid outlet devices, a mixing device is arranged in the first chamber and used for mixing and preparing different solutions from the plurality of first liquid outlet devices, and the mixing device comprises a stirrer; the method comprises the steps of,
the liquid separation assembly comprises a second liquid outlet device, a liquid inlet of the second liquid outlet device is communicated with the first chamber, and the second liquid outlet device is used for controlling outflow of a quantitative mixed solution;
the first liquid outlet device and the second liquid outlet device are respectively provided with a second cavity, the second cavity is provided with the liquid inlet and the liquid outlet, the liquid outlet is provided with an overflow valve, and a liquid pushing component is arranged in the second cavity and is used for pushing quantitative solution to the liquid outlet so as to open the overflow valve to enable the solution to flow out;
the second chamber is internally provided with a flow sensing device for detecting the flow of liquid flowing out of the second chamber;
the second chamber is arranged in a cylindrical shape, the cross section area is S, the liquid outlet and the liquid inlet are arranged at one end of the second chamber, the liquid pushing component comprises a piston rod and a driving component, and the piston rod is arranged at the end part of the other end of the second chamber and can be movably arranged along the axis direction of the second chamber; the driving assembly is used for driving the piston rod to move towards the liquid outlet; the flow sensing device comprises a displacement sensor fixed on the piston rod and is used for detecting the distance L of the piston rod moving towards the liquid outlet, so that the volume V=S.L of the flowing liquid is detected;
the driving assembly comprises an air pump, the air pump is communicated with the other end of the second chamber, and the air pump is used for providing air pressure to push the piston rod to move;
the rated air pressure provided by the air pump is P, and the threshold pressure of the overflow valve is P 0 Then p=p 0 ；
The operation method of the solution preparation and split charging device comprises the following steps:
the preparation steps are as follows: firstly determining the types of required solutions and the required volumes of the solutions, setting the displacement amount set by the displacement sensors of the first liquid outlet devices according to the required volumes, setting the threshold pressure of the overflow valve according to the rated air pressure of the air pump, putting the solutions into the corresponding first liquid outlet devices to enable the solutions to be full of the second chamber, closing the second chamber, opening the displacement sensors one by one according to the adding sequence of the solutions and communicating the air pump, closing the valve bodies on the corresponding air pump air paths to finish the step of putting the first solution into the first chamber when the displacement sensors detect that the piston rod moves to reach the set displacement amount, sequentially opening the valve bodies on the air pump air paths of the second liquid outlet devices to finish the step of putting the second solution, closing the first chamber after the step of putting all the solutions is finished, and opening the stirrer to stir and mix the solutions in the first chamber for five minutes; and/or the number of the groups of groups,
and (3) sub-packaging: firstly determining the volume of each part of solution to be split-charged, setting the displacement set by the displacement sensor of the second liquid outlet device according to the required volume, setting the threshold pressure of the overflow valve according to the rated air pressure of the air pump, opening a valve body between the first chamber and the second liquid outlet device to enable the uniformly mixed solution to be filled in the second chamber of the second liquid outlet device, closing the second chamber to open the displacement sensor and the air pump, placing a holding vessel and controlling to open a valve body on an air pump air path when the solution is required to be acquired, closing the valve body to complete a solution split-charging step when the displacement sensor detects that the movement of the piston rod reaches the set displacement, and replacing the valve body on the air pump air path to be triggered again until the split charging is finished.
2. The method of claim 1, wherein an elastic structure is connected between the piston rod and the end of the other end of the second chamber;
the other end of the second chamber is also provided with an exhaust port, and the exhaust port is used for releasing pressure so that the elastic structure can drive the piston rod to return to the end part of the other end of the second chamber.
3. The method of claim 1, wherein the second chambers of the plurality of first dispensing devices are in communication with the same air pump.
4. The method of claim 1, wherein the second chamber is further connected to a waste tank, and the solution in the second chamber is recycled to the waste tank when the waste tank is opened.
5. The method of claim 4, wherein said waste tank connected to said second chamber of said second dispensing apparatus is further provided with a waste outlet for communicating with a sewer.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210261338.7A CN114768671B (en) | 2022-03-14 | 2022-03-14 | Solution preparation and split charging device |
| PCT/CN2022/129374 WO2023173761A1 (en) | 2022-03-14 | 2022-11-02 | Solution blending and sub-packaging device |
| LU503533A LU503533B1 (en) | 2022-03-14 | 2022-11-02 | Solution preparation and dispensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210261338.7A CN114768671B (en) | 2022-03-14 | 2022-03-14 | Solution preparation and split charging device |
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| Publication Number | Publication Date |
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| CN114768671A CN114768671A (en) | 2022-07-22 |
| CN114768671B true CN114768671B (en) | 2024-02-09 |
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| CN202210261338.7A Active CN114768671B (en) | 2022-03-14 | 2022-03-14 | Solution preparation and split charging device |
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| CN (1) | CN114768671B (en) |
| LU (1) | LU503533B1 (en) |
| WO (1) | WO2023173761A1 (en) |
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| CN114768671B (en) * | 2022-03-14 | 2024-02-09 | 湖北文理学院 | Solution preparation and split charging device |
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Also Published As
| Publication number | Publication date |
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| LU503533B1 (en) | 2024-01-22 |
| CN114768671A (en) | 2022-07-22 |
| WO2023173761A1 (en) | 2023-09-21 |
| LU503533A1 (en) | 2023-09-14 |
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