WO2023173761A1 - Solution blending and sub-packaging device - Google Patents

Abstract

Provided is a solution blending and sub-packaging device (100). The solution blending and sub-packaging device (100) comprises a solution preparation assembly (1), a solution blending assembly (2) and a solution distribution assembly (3), wherein the solution preparation assembly (1) comprises a plurality of first solution output devices (11); the solution blending assembly (2) comprises a first chamber (21); the first chamber (21) is in communication with solution outlets (42) of the plurality of first solution output devices (11); a mixing device (22) is provided in the first chamber (21) and is used for mixing and blending different solutions from the plurality of first solution output devices (11); the solution distribution assembly (3) comprises a second solution output device (31); solution inlets (41) of the second solution output device (31) are in communication with the first chamber (21); the first solution output devices (11) and the second solution output device (31) are all provided with second chambers (4); the second chambers (4) are provided with the solution inlets (41) and the solution outlets (42); the solution outlets (42) are provided with overflow valves (421); and the second chambers are internally provided with solution pushing assemblies (43).

Description

A solution preparation and dispensing device

This application claims priority to the Chinese patent application with application number 202210261338.7 filed on March 14, 2022, the entire content of which is incorporated into this application by reference.

Technical field

The present application relates to the technical field of chemical solution preparation, and specifically to a solution preparation and dispensing device.

Background technique

The development of fields such as biochemistry is inseparable from the various professional experiments completed by experimentalists in the laboratory. With the expansion of knowledge, the experimental process will inevitably use solvents that are harmful to the human body and volatile, such as concentrated hydrochloric acid, concentrated nitric acid, Solutions such as glacial acetic acid, methanol, concentrated ammonia, ether, acetone, and chloroform are toxic or highly corrosive, have pungent odors, and are easily volatile. They are often used to adjust the pH of solutions, electrophoresis buffers, silver mirror reactions, and experiments. Animal anesthesia, wiping microscope oil lenses, tissue fixation, RNA extraction experiments, etc. However, since this toxic solution is extremely volatile and has certain toxicity that is harmful to human health, it generally needs to be prepared before the experiment starts and used immediately. However, simply using a measuring cylinder to measure volume, mixing in a beaker, and stirring with a glass rod for solution preparation not only brings a huge burden to the experimental preparation, but the toxic solution volatilized during the preparation process will also cause certain harm to the body of the experimenter. In addition to scientific research experiments that require the preparation of large quantities of these toxic and volatile solutions, there are also many students in teaching experiments, and the quantities required are also very large. Experimenters have a heavy workload in manually preparing solutions and it is difficult to ensure accuracy. There are problems such as poor accuracy, low efficiency and great harm.

technical problem

The main purpose of this application is to propose a solution preparation and dispensing device, which aims to solve the existing problem of manual preparation and dispensing of toxic and volatile solutions with poor accuracy, low efficiency and high harm.

Technical solutions

In order to achieve the above object, this application proposes a solution preparation and dispensing device, wherein the solution preparation and dispensing device includes:

The liquid preparation component includes a plurality of first liquid outlet devices, each of the first liquid outlet devices is used to control the outflow of a certain amount of a solution;

A liquid preparation component includes a first chamber, the first chamber is connected to the liquid outlets of a plurality of first liquid outlets, and a mixing device is provided in the first chamber, and the mixing device is used to Mix and prepare different solutions from multiple first liquid discharge devices; and,

The liquid dispensing assembly includes a second liquid outlet device, the liquid inlet of the second liquid outlet device is connected with the first chamber, and the second liquid outlet device is used to control the outflow of a quantitative mixed solution;

Wherein, the first liquid outlet device and the second liquid outlet device are each provided with a second chamber, and the second chamber is provided with the liquid inlet and the liquid outlet, and the liquid outlet An overflow valve is provided, and a liquid pushing component is provided in the second chamber. The liquid pushing component is used to push a quantitative solution to the liquid outlet to open the overflow valve and allow the solution to flow out.

In one embodiment, a flow sensing device is provided in the second chamber to detect the flow rate of liquid flowing out of the second chamber.

In one embodiment, the second chamber is arranged in a cylindrical shape with a cross-sectional area of S, the liquid outlet and the liquid inlet are provided at one end of the second chamber, and the liquid pushing Components include:

A piston rod is disposed at the other end of the second chamber and is movably disposed along the axis direction of the second chamber; and,

A driving component used to drive the piston rod to move toward the liquid outlet;

Wherein, the flow sensing device includes a displacement sensor fixed on the piston rod for detecting the distance L that the piston rod moves toward the liquid outlet, then the volume of outflowing liquid V=S·L.

In one embodiment, the driving assembly includes an air pump, the air pump is connected to the other end of the second chamber, and the air pump is used to provide air pressure to push the piston rod to move.

In one embodiment, the rated air pressure provided by the air pump is P, and the threshold pressure of the relief valve is P0, then P=P0.

In one embodiment, an elastic structure is connected between the piston rod and the other end of the second chamber;

The other end of the second chamber is also provided with an exhaust port, which is used to relieve pressure so that the elastic structure can drive the piston rod back to the end of the other end of the second chamber. .

In one embodiment, the second chambers of multiple first liquid discharge devices are connected to the same air pump.

In one embodiment, the second chamber is also connected to a waste liquid tank. When the waste liquid tank is opened, the solution in the second chamber can be recovered to the waste liquid tank.

In one embodiment, the waste liquid tank connected to the second chamber of the second liquid outlet device is further provided with a waste liquid outlet for connecting to the sewer.

In one embodiment, the mixing device includes a stirrer.

beneficial effects

In the technical solution of the present application, a liquid preparation component, a liquid dispensing component and a liquid dispensing component are provided, and a plurality of first liquid discharging devices in the liquid preparation component respectively accommodate one solution, and can be used when needed. When the individual usage amount of each solution is given, the solution is controlled to be quantitatively supplied to the liquid preparation component through the first liquid outlet device, and the mixing device in the liquid preparation component mixes multiple solutions to configure the solution. The required mixed solution is then introduced into the liquid dispensing component, and the second liquid discharging device in the liquid dispensing component controls each action to release a quantitative solution to realize the solution in the liquid dispensing component. Carry out quantitative dispensing. Through the overall device, the quantitative and precise preparation of multiple solutions and the quantitative packaging of the prepared solutions are realized, which meets the needs of large-dose preparation and small-dose packaging and distribution tests during the test process. It is highly efficient and does not require manual preparation and packaging. The completely enclosed preparation process also prevents harmful volatile solutions from evaporating into the air and causing injury to experimenters due to inhalation or contact. Specifically, the first liquid outlet device and the second liquid outlet device are each provided with the second chamber, and the liquid inlet of the second chamber of each first liquid outlet device is Used to place a single required solution, the liquid outlet is connected to the first chamber, and the liquid outlet is provided with the overflow valve to control the opening and closing of the liquid outlet to cooperate with the The liquid push component realizes control of the amount of liquid, which is more accurate than manual control; and the liquid inlet of the second chamber of the second liquid outlet device is connected to the first chamber, After the liquid preparation component prepares the solution, the solution is introduced into the second chamber of the second liquid outlet device, and the liquid outlet of the second liquid outlet device is also provided with the overflow valve, Cooperate with the liquid pushing component to achieve a single quantitative release of the solution, so as to realize the liquid separation operation during the experimental liquid collection.

Description of the drawings

In order to explain the embodiments of the present application or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without exerting creative efforts.

Figure 1 is a simplified plan view of an embodiment of a solution preparation and dispensing device provided by the present application.

Explanation of reference numbers:

label	name	label	name
100	Solution preparation and dispensing device	421	relief valve
1	Liquid preparation components	43	Push fluid component
11	First liquid discharge device	431	Piston rod
2	Liquid dispensing components	432	Drive components
twenty one	first chamber	432a	air pump
twenty two	mixing device	44	flow sensing device
22a	mixer	44a	Motion detector
3	Dispensing components	45	elastic structure
31	Second liquid discharge device	46	exhaust vent
4	second chamber	5	waste tank
41	liquid inlet	51	Waste liquid outlet
42	Liquid outlet	​	​

The realization of the purpose, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings.

Embodiments of the invention

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

It should be noted that if there are directional instructions (such as up, down, left, right, front, back...) in the embodiments of the present application, the directional instructions are only used to explain the position of a certain posture (as shown in the drawings). (display) relative positional relationship, movement, etc. between the components. If the specific posture changes, the directional indication will also change accordingly.

In addition, if there are descriptions involving “first”, “second”, etc. in the embodiments of this application, the descriptions of “first”, “second”, etc. are only for descriptive purposes and shall not be understood as indications or implications. Its relative importance or implicit indication of the number of technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the meaning of "and/or" appearing in the entire text includes three parallel solutions. Taking "A and/or B" as an example, it includes solution A, or solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions in various embodiments can be combined with each other, but it must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that such a combination of technical solutions does not exist. , nor is it within the scope of protection required by this application.

The development of fields such as biochemistry is inseparable from the various professional experiments completed by experimentalists in the laboratory. With the expansion of knowledge, the experimental process will inevitably use solvents that are harmful to the human body and volatile, such as concentrated hydrochloric acid, concentrated nitric acid, Solutions such as glacial acetic acid, methanol, concentrated ammonia, ether, acetone, and chloroform are toxic or highly corrosive, have pungent odors, and are easily volatile. They are often used to adjust the pH of solutions, electrophoresis buffers, silver mirror reactions, and experiments. Animal anesthesia, wiping microscope oil lenses, tissue fixation, RNA extraction experiments, etc. However, since this toxic solution is extremely volatile and has certain toxicity that is harmful to human health, it generally needs to be prepared before the experiment starts and used immediately. However, simply using a measuring cylinder to measure volume, mixing in a beaker, and stirring with a glass rod for solution preparation not only brings a huge burden to the experimental preparation, but the toxic solution volatilized during the preparation process will also cause certain harm to the body of the experimenter. In addition to scientific research experiments that require the preparation of large quantities of these toxic and volatile solutions, there are also many students in teaching experiments, and the quantities required are also very large. Experimenters have a heavy workload in manually preparing solutions and it is difficult to ensure accuracy. There are problems such as poor accuracy, low efficiency and great harm.

In view of this, the present application provides a solution preparation and dispensing device. Figure 1 is an embodiment of the solution preparation and dispensing device provided by the present application. The solution preparation and dispensing device will be described below with reference to specific drawings.

Please refer to Figure 1. The solution preparation and dispensing device 100 includes a liquid preparation component 1, a liquid preparation component 2 and a liquid dispensing component 3. The liquid preparation component 1 includes a plurality of first liquid discharge devices 11, each of the first liquid dispensing devices 11. A liquid outlet device 11 is used to control the outflow of a certain amount of a solution; the liquid preparation assembly 2 includes a first chamber 21 , the first chamber 21 and a plurality of liquid outlets of the first liquid outlet device 11 42 is connected, and a mixing device 22 is provided in the first chamber 21. The mixing device 22 is used to mix and prepare different solutions from a plurality of the first liquid outlet devices 11; the liquid dispensing assembly 3 includes a third Two liquid outlet devices 31, the liquid inlet 41 of the second liquid outlet device 31 is connected with the first chamber 21, and the second liquid outlet device 31 is used to control the outflow of a quantitative amount of mixed solution; wherein, the The first liquid outlet device 11 and the second liquid outlet device 31 are each provided with a second chamber 4, and the second chamber 4 is provided with the liquid inlet 41 and the liquid outlet 42. The liquid port 42 is provided with an overflow valve 421, and the second chamber 4 is provided with a liquid pushing component 43. The liquid pushing component 43 is used to push a quantitative solution to the liquid outlet 42 to open the overflow. Valve 421 allows the solution to flow out.

In the technical solution of the present application, the liquid preparation component 1, the liquid dispensing component 2 and the liquid dispensing component 3 are provided, and each of the plurality of first liquid discharge devices 11 in the liquid preparation component 1 accommodates one kind of liquid. When the solution needs to be used, a separate usage amount of each solution is given, and the solution is quantitatively supplied to the liquid preparation component 2 through the first liquid outlet device 11. The mixing device 22 in the liquid preparation component 2 Mix multiple solutions to prepare the required mixed solution, and then introduce the mixed solution into the liquid dispensing assembly 3, and control the release of each action through the second liquid outlet device 31 in the liquid dispensing assembly 3 Quantitative solution realizes quantitative dispensing of the solution in the liquid dispensing component 3 . Through the overall device, the quantitative and precise preparation of multiple solutions and the quantitative packaging of the prepared solutions are realized, which meets the needs of large-dose preparation and small-dose packaging and distribution tests during the test process. It is highly efficient and does not require manual preparation and packaging. The completely enclosed preparation process also prevents harmful volatile solutions from evaporating into the air and causing injury to experimenters due to inhalation or contact. Specifically, the first liquid outlet device 11 and the second liquid outlet device 31 are both provided with the second chamber 4, and the second chamber 4 of each first liquid outlet device 11 is The liquid inlet 41 is used to place a single required solution, the liquid outlet 42 is connected with the first chamber 21, and the liquid outlet 42 is provided with the overflow valve 421 to control the The opening and closing of the liquid outlet 42 cooperates with the liquid pushing assembly 43 to control the amount of liquid, which is more precise than manual control; and the second chamber 4 of the second liquid outlet device 31 The liquid inlet 41 is connected to the first chamber 21. After the liquid preparation component 2 has prepared the solution, the solution is introduced into the second chamber 4 of the second liquid outlet device 31. The liquid outlet 42 of the second liquid discharging device 31 is also provided with the overflow valve 421, which cooperates with the liquid pushing assembly 43 to realize a single quantitative release of the solution, so as to realize the liquid separation operation during experimental liquid collection.

It should be noted that the liquid inlet 41 of the first liquid outlet device 11 and the second liquid outlet device 31 is provided with a valve body that can control opening and closing, and the valve body may be a manually controlled valve body. It can also be a solenoid valve. In this embodiment, the solenoid valve is used. On the one hand, it can be remotely electrically connected for operation without the need to set up an additional operating area, which is convenient for installation and use. On the other hand, it has control scalability, such as setting programs. Realize automatic operation of the entire process or install a monitoring system to automatically monitor the status of each valve body to achieve automated control.

Furthermore, a flow sensing device 44 is provided in the second chamber 4 for detecting the flow rate of liquid flowing out of the second chamber 4 . The second chamber 4 may be made of non-transparent material or the second chamber 4 may be installed in an invisible place, making it impossible to monitor the amount of solution by setting a scale 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 provided in the second chamber 4 to automatically detect the flow amount. On the one hand, no manual participation is required, it is simple and fast; on the other hand, It has high precision and improves the accuracy of preparation and packaging. The type of the flow sensing device 44 can be a weight sensing device, which can obtain the total amount of solution used through the weight difference of the second chamber 4; or it can be a flow valve, which can obtain the used solution by directly measuring the total amount of flow through the valve body. The total amount is not limited here, as long as the amount of solution used can be accurately obtained.

Specifically, the second chamber 4 is arranged in a cylindrical shape and has a cross-sectional area S. The liquid outlet 42 and the liquid inlet 41 are provided at one end of the second chamber 4. The pusher The liquid assembly 43 includes a piston rod 431 and a driving assembly 432. The piston rod 431 is provided at the other end of the second chamber 4 and can be movable along the axis direction of the second chamber 4; The driving assembly 432 is used to drive the piston rod 431 to move toward the liquid outlet 42; wherein the flow sensing device 44 includes a displacement sensor 44a fixed on the piston rod 431 to detect the piston rod. The distance L that 431 moves toward the liquid outlet 42, then the volume of the outflowing liquid V=S·L. The second chamber 4 is configured as a syringe-like structure, and the liquid pushing operation is performed through the piston rod 431, which has the advantages of a syringe structure, that is, the piston rod 431 is tightly sealed when it moves, and the piston rod 431 The displacement can indirectly reflect the volume of solution flowing out. Of course, the liquid pushing assembly 43 can also be set as an ordinary liquid pushing rod, and the flow rate can be measured through the above-mentioned flow valve or weight sensing device. However, on the one hand, it is difficult to install, and on the other hand, it is easily affected by external factors. Compared with this method, In the embodiment, the piston rod 431 is provided and the displacement sensor 44a is provided corresponding to the piston rod 431. It is easy to install and the piston rod 431 will not move at will when it is pressed. It is difficult for the measurement results to be affected by external factors, making the measurement Higher accuracy.

It should be noted that the displacement sensor 44a can 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 the second chamber 4 The external structure moves synchronously so that the displacement sensor 44a detects the external structure of the second chamber 4 to obtain the displacement of the piston rod 431. This structure occupies a small area and is easy to install, but it has a certain impact on the measurement accuracy. ; It can also be used to detect the displacement of the part of the piston rod 431 that does not extend into the second chamber 4. This method has little impact on accuracy but the length of the piston rod 431 is longer and requires a large installation space; also Other methods such as visual induction, magnetic induction, etc. may be used to provide a sensing structure on the piston rod 431 so that the displacement sensor 44a outside the second chamber 4 can sense the displacement inside the second chamber 4. The displacement of the piston rod 431 occupies a small area and has high precision, but it is difficult to maintain after failure. Each of the above situations has its own advantages and disadvantages, but as long as it can detect the displacement, there is no limit here, and the selection can be based on the actual use situation.

Specifically, the driving assembly 432 includes an air pump 432a. The air pump 432a is connected to the other end of the second chamber 4. The air pump 432a is used to provide air pressure to push the piston rod 431 to move. The driving component may be a hydraulic rod, a cylinder or an air pump, etc. In this embodiment, the driving component is configured as the air pump 432a, which provides stable air pressure to push the piston rod 431. On the one hand, the air pump 432a provides stable air pressure to push the piston rod 431. There is no need to install additional mechanical structures for pushing, which is convenient for installation and use; on the other hand, the air pressure can ensure that the piston rod 431 is evenly stressed, avoiding the problem of measurement deviation caused by the tilt of the piston rod 431 or even the problem of the piston rod 431 getting stuck. The driving mode of the piston rod 431 is driven by air pressure, that is, the sealing performance needs to be ensured. The displacement sensor 44a cannot detect the displacement of the piston rod 431 by, for example, the above-mentioned method of detecting that the piston rod 431 does not extend into the third position. The way the parts in the second chamber 4 are displaced.

Further, the rated air pressure provided by the air pump 432a is P, and the threshold pressure of the relief valve 421 is P0, then P=P0. When the piston rod 431 is normally driven, it is controlled by the threshold pressure of the overflow valve 421. The hydraulic pressure of the piston rod 431 on the side of the solution should be equal to the threshold pressure of the overflow valve 421, so the The rated air pressure of the air pump 432a must be greater than or equal to the threshold pressure of the overflow valve 421 before the piston rod 431 can 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 relief valve 421, when the air pump 432a stops working, the air pressure on the side of the piston rod 431 pushed by the gas will decrease. Even if the air pressure decreases, The speed is extremely fast, and there may be situations where the air pressure is greater than the hydraulic 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, resulting in too much outflowing solution and inaccurate preparation. The problem. Therefore, in this embodiment, the rated air pressure of the air pump 432a is set to be equal to the threshold pressure of the relief valve 421. During normal operation, when the air pump 432a is turned on, the pressures on both sides of the piston rod 431 are equal. And 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. At this time, when the outflow solution reaches the required solution volume, the air pump 432a stops immediately, and the piston The air pressure on the side of the rod 431 pushed by the gas is immediately lower than the threshold pressure of the overflow valve 421, so that the overflow valve 421 can be quickly closed to avoid additional outflow of the solution due to the inertia during the reduction of air pressure after the air pump 432a stops. Therefore, in the pressure linkage between the overflow valve 421 and the air pump 432a, the sensitivity of closing the overflow valve 421 is improved, thereby improving the accuracy of solution preparation or dispensing.

In addition, an elastic structure 45 is connected between the piston rod 431 and the other end of the second chamber 4; an exhaust port 46 is also provided at the other end of the second chamber 4. The air port 46 is used to relieve pressure so that the elastic structure 45 can drive the piston rod 431 back to the other end of the second chamber 4 . The exhaust port 46 is provided to completely discharge the gas pumped into the second chamber 4 by the air pump 432a. At the same time, the elastic structure 45 is provided to remove the piston rod after completing the action of pushing the solution out. 431 is brought back to the side close to the air pump 432a to maintain the maximum volume of the solution side of the second chamber 4, and at the same time, it is also convenient to completely clean the inner wall of the solution side during cleaning to avoid the piston rod. When 431 is not returned to position, it blocks the cleaning of the inner wall. The elastic structure 45 may be a spring or elastic rubber. In this embodiment, a spring structure is used, which has a simple structure, is cheap, and has strong practicability.

In addition, the second chambers 4 of multiple first liquid discharge devices 11 are connected to the same air pump 432a. Using one air pump 432a to drive multiple first liquid outlets 11 not only reduces the number of air pumps 432a to reduce costs, but also synchronizes the air pump 432a with each first liquid outlet 11 A valve body is provided in between, and the order in which the solution in the first liquid outlet device 11 is mixed into the first chamber 21 can be controlled by controlling the air supply direction of the air pump 432a to avoid errors that may occur if the solution is mixed in a different order. reactions and dangerous reactions, etc. The second chamber 4 of the second liquid outlet device 31 uses an independent air pump 432a, and a valve body is also provided between the air pump 432a and the second chamber 4. The valve body is When a quantitative solution needs to be dispensed, it is opened to allow the air pressure to push the piston rod 431 to allow the liquid to flow out. After reaching a predetermined amount, the valve body is closed to prevent the gas on the gas side of the piston rod 431 from overflowing at the air pump 432a, maintaining The pressure allows the piston rod 431 to remain stationary. During the next dispensing operation, the valve body is opened, so that the piston rod 431 can continue to advance following the previous dispensing operation to ensure that each dispensing operation is completed. The same movement distance of the piston rod 431 detected by the displacement sensor 44a is equivalent to the corresponding amount of mixed solution, which avoids the piston rod 431 retreating after a dispensing operation, so that when dispensing again, the displacement sensor 44a detects The same displacement results in a decrease in liquid output.

In addition, the second chamber 4 is also connected to a waste liquid tank 5. 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 of the solutions used in the laboratory cannot be directly discharged into the sewer, and special management and treatment measures need to be set up. Therefore, in this embodiment, each second chamber 4 is connected to a waste liquid tank 5. The waste liquid tank 5 empties the solution in the second chamber 4 to facilitate the cleaning of the second chamber 4 and the treatment of waste liquid. The waste liquid tank 5 can be movably connected to the second chamber 4 so that the waste liquid tank 5 containing waste liquid can be taken out for processing; it can also be fixedly connected to the second chamber 4 , and an additional processing device and a discharge system are provided to process and discharge the waste liquid in the waste liquid tank 5 . The former is easy to operate and facilitates manual targeted processing, and the latter is automated processing, both of which can process the waste liquid in the waste liquid tank 5, and is not limited here.

Furthermore, the waste liquid tank 5 connected to the second chamber 4 of the second liquid outlet device 31 is also provided with a waste liquid outlet 51 for communicating with the sewer. When the prepared solution is evaluated to be directly discharged, the solution in the second chamber 4 of the second liquid outlet device 31 can be directly discharged. Therefore, in the second chamber 4 of the second liquid outlet device 31 While the waste liquid tank 5 is provided on the second chamber 4, the waste liquid tank 5 is connected to the sewer. On the one hand, when a solution that cannot be directly discharged is encountered, the waste liquid tank 5 can be removed. On the other hand, when the solution can be discharged directly, the solution can be flowed directly to the sewer through the waste liquid tank 5. The treatment methods required in the two situations can be completed without additional structures. The structure is simple and easy to install.

Furthermore, the mixing device 22 includes a stirrer 22a. The mixing device 22 can adopt pneumatic mixing, magnetic power mixing or mechanical mixing. In this embodiment, mechanical mixing is adopted. The mixing device 22 is directly set as a mechanical stirrer 22a, and rotates The solution is stirred to achieve mixing. This method has a simple and stable structure, long service life and easy maintenance.

In addition, the liquid outlet 42 of the second chamber 4 of the second liquid outlet device 31 is also provided with a flow meter. The flow meter is provided downstream of the overflow valve 421 for visual detection. The outflowing solution flow rate can be measured with reference to the operation status of the solution preparation and dispensing device 100, which facilitates flow monitoring and equipment operation and maintenance testing.

Specifically, this application also proposes an operating method for the solution preparation and dispensing device 100. The operation method steps include a preparation step, a dispensing step and a cleaning step. The preparation step includes: first determining the type of solution required. As well as the required volume of each solution, the displacement amount set by the displacement sensor 44a of each first liquid outlet device 11 is set according to the required volume, and the relief valve 421 is set according to the rated air pressure of the air pump 432a. threshold pressure, put each solution into the corresponding first liquid outlet device 11 so that it fills the second chamber 4, close the second chamber 4 and open the displacement sensors 44a one by one according to the order of solution addition. Connected to the air pump 432a, the displacement sensor 44a detects that the piston rod 431 moves to a set displacement and closes the corresponding valve body on the air path of the air pump 432a to complete placing the first solution into the first chamber. Step 21, sequentially open the valve body on the air path of the air pump 432a of the second first liquid outlet device 11 to perform the insertion step of the second solution, complete the insertion steps of all solutions in sequence, and then close the The first chamber 21 is turned on and the stirrer 22a is turned on for five minutes to stir and mix the solution in the first chamber 21 evenly.

Further, the dispensing step includes: first determining the volume of each solution to be dispensed, setting the displacement amount set by the displacement sensor 44a of the second liquid outlet device 31 according to the required volume, and adjusting the air pump 432a according to the required volume. The rated air pressure sets the threshold pressure of the overflow valve 421, and the valve body between the first chamber 21 and the second liquid outlet device 31 is opened so that the mixed solution fills the second liquid outlet device. 31 of the second chamber 4, close the second chamber 4 and turn on the displacement sensor 44a and the air pump 432a. When it is necessary to obtain the solution, place a container and control to open the valve body on the air path of the air pump 432a. , the displacement sensor 44a detects that the piston rod 431 moves to the set displacement amount, closes the valve body to complete a solution dispensing step, replaces the holding vessel and triggers the valve body on the air path of the air pump 432a again to continue dispensing. Until the dispensing is completed.

Furthermore, the cleaning step includes: opening the exhaust port 46 of each second chamber 4 so that the piston rod 431 is pulled by the elastic structure 45 to return to the initial position, and opening each waste liquid outlet. The box 5 collects and discharges the waste liquid in the second chamber 4 and then closes it, and controls the opening and closing of the valve body to connect the first chamber 21 with a plurality of the second chambers 4 and seal them as a whole to form an integral chamber. room, set the threshold pressure of the overflow valve 421 of the first liquid outlet device 11 to zero, select one of the first liquid outlet devices 11 to open the liquid inlet 41 and inject clean water, so that the clean water flows through it in sequence From the first chamber 21 to the plurality of second chambers 4, the waste liquid tank 5 of the second liquid outlet device 31 is opened and the waste liquid outlet 51 is opened at the same time, so that the clean water after flushing is automatically The waste liquid tank 5 of the second liquid discharging device 31 flows to the sewer to complete the cleaning of the solution preparation and dispensing device 100, and finally closes all valve bodies and the air pump 432a.

The above are only some embodiments of the present application, and do not limit the patent scope of the present application. Under the inventive concept of the present application, equivalent structural transformations can be made by using the contents of the description and drawings of the present application, or direct/indirect application. Other related technical fields are included in the patent protection scope of this application.

Claims (10)

1. A solution preparation and dispensing device, which includes:

   The liquid preparation component includes a plurality of first liquid outlet devices, each of the first liquid outlet devices is used to control the outflow of a certain amount of a solution;

   A liquid preparation component includes a first chamber, the first chamber is connected to the liquid outlets of a plurality of first liquid outlets, and a mixing device is provided in the first chamber, and the mixing device is used to Mix and prepare different solutions from multiple first liquid discharge devices; and,

   The liquid dispensing assembly includes a second liquid outlet device, the liquid inlet of the second liquid outlet device is connected with the first chamber, and the second liquid outlet device is used to control the outflow of a quantitative mixed solution;

   Wherein, the first liquid outlet device and the second liquid outlet device are each provided with a second chamber, and the second chamber is provided with the liquid inlet and the liquid outlet, and the liquid outlet An overflow valve is provided, and a liquid pushing component is provided in the second chamber. The liquid pushing component is used to push a quantitative solution to the liquid outlet to open the overflow valve and allow the solution to flow out.
2. The solution preparation and dispensing device according to claim 1, wherein a flow sensing device is provided in the second chamber to detect the flow rate of liquid flowing out of the second chamber.
3. The solution preparation and dispensing device according to claim 2, wherein the second chamber is arranged in a cylindrical shape and has a cross-sectional area of S, and the liquid outlet and the liquid inlet are arranged in the second chamber. At one end of the chamber, the liquid push assembly includes:

   A piston rod is disposed at the other end of the second chamber and is movably disposed along the axis direction of the second chamber; and,

   A driving component used to drive the piston rod to move toward the liquid outlet;

   Wherein, the flow sensing device includes a displacement sensor fixed on the piston rod for detecting the distance L that the piston rod moves toward the liquid outlet, then the volume of outflowing liquid V=S·L.
4. The solution preparation and dispensing device according to claim 3, wherein the driving component includes an air pump, the air pump is connected to the other end of the second chamber, and the air pump is used to provide air pressure to push the piston rod to move.
5. The solution preparation and dispensing device according to claim 4, wherein the rated air pressure provided by the air pump is P, and the threshold pressure of the overflow valve is P0, then P=P0.
6. The solution preparation and dispensing device according to claim 4, wherein an elastic structure is connected between the piston rod and the other end of the second chamber;

   The other end of the second chamber is also provided with an exhaust port, which is used to relieve pressure so that the elastic structure can drive the piston rod back to the end of the other end of the second chamber. .
7. The solution preparation and dispensing device according to claim 4, wherein the second chambers of the plurality of first liquid discharge devices are connected to the same air pump.
8. The solution preparation and dispensing device according to claim 1, wherein the second chamber is also connected to a waste liquid tank. When the waste liquid tank is opened, the solution in the second chamber can be recycled to the waste liquid tank. liquid tank.
9. The solution preparation and dispensing device according to claim 8, wherein the waste liquid tank connected to the second chamber of the second liquid outlet device is further provided with a waste liquid outlet for connecting to a sewer.
10. The solution preparation and dispensing device according to claim 1, wherein the mixing device includes a stirrer.