CN114146623A - Accurate medicine dispensing system - Google Patents
Accurate medicine dispensing system Download PDFInfo
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- CN114146623A CN114146623A CN202111344993.0A CN202111344993A CN114146623A CN 114146623 A CN114146623 A CN 114146623A CN 202111344993 A CN202111344993 A CN 202111344993A CN 114146623 A CN114146623 A CN 114146623A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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Abstract
The invention discloses an accurate medicine dispensing system which comprises a control system, a water inlet pipeline and a medicine inlet pipeline which are connected with a medicine pool, a water inlet electric valve and a water inlet flow meter which are arranged on the water inlet pipeline, a medicine inlet electric valve and a medicine inlet flow meter which are arranged on the medicine inlet pipeline, an aeration pipe arranged on the medicine pool and an aeration electromagnetic valve arranged on the aeration pipe.
Description
Technical Field
The invention relates to the field of tap water treatment, in particular to an accurate dispensing system.
Background
The conventional treatment process of the water works comprises the steps of coagulation, precipitation, filtration, disinfection and the like, and the added medicaments mainly comprise polyaluminium chloride (PAC) and sodium hypochlorite. The coagulation treatment is the first link of the whole water treatment process, and alum floc is formed by mutual collision and contact of coagulant and particles in raw water, which is the basis of the whole water treatment. After the PAC raw solution enters a factory, the PAC raw solution is diluted, mixed and stirred in a certain proportion, and then is prepared into solution with the concentration required by production for continuous feeding, if the dosage concentration of the PAC solution is not accurate, the mixing and stirring are not uniform, the deviation of the feeding concentration is large, the turbidity is increased, and the water quality is deteriorated. At present, the water plant usually adopts the level gauge to dispense, the mechanical mixer mixes the medicine control system that the stirring etc. constitutes and dispenses the PAC, and when the medicine pond liquid level was used to being close the bottom of the pool, manual switching medicine pond continued to add medicine and guarantees production work. This dispensing pattern has the following problems:
1) the PAC stock solution and the clear water amount entering the medicine pool are judged by naked eyes or a liquid level meter, during the medicine adding process, the PAC stock solution and the clear water enter the medicine pool, foam and liquid level fluctuation easily occur during the primary mixing and water inlet medicine feeding process, so that the reading error of the naked eyes or the liquid level meter is larger, and taking the water plant as an example, a 300kg (0.268 m) pool is configured2) If the liquid level of the PAC stock solution is measured by a liquid level meter and the liquid level has normal deviation of 0.01m, the PAC deviation amount is 0.01 x 3.75-0.0375 m2And the deviation reaches 14%, the actual liquid level meter fluctuation may be larger, and the solution concentration ratio cannot be effectively controlled.
2) After the solution is added, the stirrer needs to be manually started for mixing and stirring, and the stirrer needs to be manually closed after a period of time, so that production operators forget to close the stirrer when handling other problems, and the stirrer runs for a long time and has a burning risk;
3) the traditional mechanical stirrer is low in stirring efficiency, and the phenomenon of uneven stirring still exists after long-time stirring; the stirrer is soaked in the medicine pool for a long time, so that a screw and an impeller are easy to rust, and the maintenance and the replacement are troublesome;
4) the manual medicine pool switching is greatly interfered by human factors, the situations of late switching and forgetting switching are easy to occur, the medicine adding pump is evacuated, and the medicine adding is stopped.
Therefore, with the increasing demand of people on the quality of drinking water, the problem that how to ensure the accurate concentration and uniform mixing of the added liquid medicine and continuously and normally add the medicine so as to ensure the stable and standard quality of the water leaving the factory is always a problem in the industry.
Disclosure of Invention
The invention aims to solve the technical problems that in the prior art, the dispensing concentration is inaccurate, the mixing and stirring are not uniform, the switching of medicine pools by personnel is easy to lag, and even the medicine feeding pump is evacuated due to forgetting of switching, and provides an accurate dispensing system.
The technical scheme adopted by the invention for solving the technical problems is as follows: the accurate medicine dispensing system comprises a control system, a water inlet pipeline, a medicine inlet pipeline, a water inlet electric valve, a water inlet flow meter, a medicine inlet electric valve, a medicine inlet flow meter, an aeration pipe and an aeration electromagnetic valve, wherein the water inlet electric valve and the water inlet flow meter are connected with a medicine pool, the water inlet electric valve and the medicine inlet flow meter are arranged on the water inlet pipeline, the aeration electromagnetic valve is arranged on the aeration pipe and used for controlling whether compressed gas enters the aeration pipe, the water inlet electric valve, the medicine inlet electric valve, the water inlet flow meter, the medicine inlet flow meter and the aeration electromagnetic valve are respectively connected with the control system, the control system is used for opening the water inlet electric valve and the medicine inlet electric valve when dispensing, and the water inlet electric valve and the medicine inlet electric valve are closed and opened after the flow monitored by the water inlet flow meter and the medicine inlet flow meter reaches the corresponding required amount.
Preferably, the aeration pipe is laid at the periphery of the bottom of the medicine pool in a circle, and the aeration pipe is a PVC flower pipe with a plurality of air holes.
Preferably, the water inlet flowmeter and the medicine inlet flowmeter are both flow meters with 485 communication functions, and the flow meters are connected with the control system in a 485 communication mode.
Preferably, the automatic medicine discharging device further comprises a liquid level meter arranged at the top of the medicine pool and used for monitoring the liquid level value of the medicine pool, a medicine discharging pipeline connected with the medicine pool and a medicine discharging electric valve arranged on the medicine discharging pipeline, and the liquid level meter and the medicine discharging electric valve are respectively connected with the control system.
Preferably, the number of the medicine pools is multiple, and the multiple medicine pools share one water inlet flow meter and one medicine inlet flow meter;
the water inlet pipeline comprises a water inlet main pipeline and a plurality of water inlet branch pipelines connected with the water inlet main pipeline, the plurality of water inlet branch pipelines are connected with the plurality of medicine pools in a one-to-one correspondence mode, the water inlet main pipeline is provided with one water inlet flow meter, each water inlet branch pipeline is provided with one water inlet electric valve, and only one water inlet electric valve is opened at any time during medicine preparation;
the medicine inlet pipeline comprises a medicine inlet main pipeline and a plurality of medicine inlet branch pipelines connected with the medicine inlet main pipeline, the medicine inlet branch pipelines are connected with the medicine pools in a one-to-one correspondence mode, the medicine inlet main pipeline is provided with one medicine inlet flow meter, each medicine inlet branch pipeline is provided with one medicine inlet electric valve, and only one medicine inlet electric valve is opened at any time during medicine preparation;
the top of each medicine pool is provided with one liquid level meter, the medicine outlet pipeline of each medicine pool is provided with one electric valve for medicine outlet, and the medicine outlet pipelines of all the medicine pools are connected in parallel and then output.
Preferably, the medicine pool comprises four states of using, standby, waiting for dispensing and dispensing;
the control system is used for closing the medicine outlet valve of the medicine pool in the using state to switch the medicine pool in the using state to a to-be-dispensed state when the liquid level value of the medicine pool in the using state is less than or equal to the automatic switching liquid level, selecting one medicine pool from other medicine pools in a standby state, and opening the medicine outlet valve of the selected medicine pool to switch the selected medicine pool to the using state;
the control system is also used for opening a water inlet electric valve and a medicine inlet electric valve of a certain medicine pool in a state to be dispensed when an automatic medicine dispensing signal of the certain medicine pool in the state to be dispensed, which is input by a user, is received, so that the certain medicine pool in the state to be dispensed enters a state in dispensing, closing the water inlet electric valve and opening the aeration electromagnetic valve after the water flow monitored by the water inlet flow meter and the medicine inlet flow meter of the medicine pool in the state in dispensing reaches the corresponding demand, and closing the aeration electromagnetic valve after the aeration electromagnetic valve is opened for a preset time so that the medicine pool in the state in dispensing enters a standby state.
Preferably, when the medicine pool in the in-use state is switched to the medicine-to-be-dispensed state, the control system sequentially traverses adjacent other medicine pools according to the spatial distance from near to far until a medicine pool in the standby state is found.
Preferably, when the medicine pool in the state to be dispensed is switched to the state in dispensing, the control system calculates the water demand according to the pre-dispensing level value monitored by the liquid level meter, the stock solution demand and the target level value set by the user and the area of the medicine pool, reads the initial cumulative number of the water inlet flowmeter and the medicine inlet flowmeter, reading the real-time cumulative numbers of the water inlet flowmeter and the medicine inlet flowmeter in real time in the medicine dispensing process, subtracting the initial cumulative number read before from the real-time cumulative number to obtain the current medicine inlet quantity and the current water inlet quantity, and closing the medicine feeding electric valve when the medicine feeding amount reaches the required amount of the stock solution, closing the water inlet electric valve when the water inflow reaches the required amount of the water, closing the medicine feeding electric valve and the water inlet electric valve, then opening the aeration electromagnetic valve, and closing the aeration electromagnetic valve after the aeration electromagnetic valve is opened for a preset time to enable the medicine pool in the medicine dispensing state to enter a standby state.
Preferably, the water inlet main pipeline is provided with a water inlet electric main valve and a manual valve; the medicine feeding main pipeline is connected with a plurality of corresponding stock solution pools through a plurality of medicine feeding branch pipes, and each medicine feeding branch pipe is provided with an electric valve and a manual valve; each water inlet branch pipeline and each medicine inlet branch pipeline are provided with a manual valve; each medicine outlet pipeline is also provided with a manual valve.
Preferably, the aeration pipes of the plurality of medicine pools are connected to the same gas transmission pipeline for introducing compressed air, and the gas transmission pipeline is provided with a manual valve.
The accurate medicine dispensing system has the following beneficial effects: according to the invention, the flowmeter is used as a medicine amount control basis, and an aeration stirring mode is adopted to replace the traditional mechanical stirring, so that the PAC dispensing accuracy can be improved, the production control risk of a water plant can be reduced, the water quality guarantee capability can be improved, and the equipment maintenance cost can be reduced; furthermore, the medicine pools are multiple and have four states, and the control of dispensing and switching the work of the medicine pools is realized according to the states, so that the workload of personnel is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts:
FIG. 1 is a schematic diagram of a precision dispensing system according to the present invention;
FIG. 2 is a schematic diagram of a precise dispensing system according to an embodiment of the present invention;
FIG. 3 is a state decision flow diagram;
fig. 4 is a flowchart of dispensing control in the dispensing state.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Exemplary embodiments of the invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The general idea of the invention is as follows: the traditional control mode of dispensing is PAC raw liquid volume and the clear water volume that gets into the medicine pond of dispensing through naked eye or level gauge judgement, through manual start-up mixer after a period, stops the stirring, accomplishes the work of dispensing, manual switching or carrying out the liquid level through the PLC program setting after the manual work judges the medicine pond liquid level very low and switch, this kind of mode of dispensing exists that the concentration of dispensing is inaccurate, mix the stirring inhomogeneous, personnel switch the medicine pond and lag easily, lead to adding medicine pump evacuation scheduling problem even because of forgetting to switch. Therefore, referring to fig. 1, the invention constructs an accurate dispensing system, which comprises a control system, a water inlet pipeline and a medicine inlet pipeline connected with a medicine pool, a water inlet electric valve and a water inlet flow meter arranged on the water inlet pipeline, a medicine inlet electric valve and a medicine inlet flow meter arranged on the medicine inlet pipeline, an aeration pipe arranged on the medicine pool, and an aeration electromagnetic valve arranged on the aeration pipe and used for controlling whether compressed gas enters the aeration pipe, wherein the water inlet electric valve, the medicine inlet electric valve, the water inlet flow meter, the medicine inlet flow meter, the aeration electromagnetic valve and a liquid level meter are respectively connected with the control system, the control system is used for opening the water inlet electric valve and the medicine inlet electric valve when dispensing, closing the water inlet electric valve and the medicine inlet electric valve when the flow monitored by the water inlet flow meter and the medicine inlet flow meter reaches the corresponding demand and then opening the aeration electromagnetic valve, therefore, the invention uses the flowmeter as the basis for controlling the dosage, adopts an aeration stirring mode to replace the traditional mechanical stirring mode, can improve the PAC dispensing accuracy, reduce the production control risk of a water plant, improve the water quality guarantee capability and reduce the equipment maintenance cost.
In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the specific embodiments of the specification, and it should be understood that the embodiments and specific features of the embodiments of the present invention are detailed descriptions of the technical solutions of the present application, and are not limited to the technical solutions of the present application, and the technical features of the embodiments and examples of the present invention may be combined with each other without conflict.
Referring to fig. 1, the precision dispensing system of the present invention comprises: the control system (such as a PLC), a water inlet pipeline and a medicine inlet pipeline which are connected with the medicine pool, a water inlet electric valve and a water inlet flow meter which are arranged on the water inlet pipeline, a medicine inlet electric valve and a medicine inlet flow meter which are arranged on the medicine inlet pipeline, an aeration pipe which is arranged on the medicine pool, an aeration electromagnetic valve which is arranged on the aeration pipe and is used for controlling whether compressed gas enters the aeration pipe, a liquid level meter which is arranged at the top of the medicine pool and is used for monitoring the liquid level value of the medicine pool, a medicine outlet pipeline which is connected with the medicine pool and a medicine outlet electric valve which is arranged on the medicine outlet pipeline.
The control system is used for opening the water inlet electric valve and the medicine inlet electric valve when dispensing medicines, and closing the water inlet electric valve and the medicine inlet electric valve after the flow monitored by the water inlet flow meter and the medicine inlet flow meter reaches the corresponding required amount.
Specifically, the aeration pipe is laid on the periphery of the bottom of the medicine pool in a circle, and the aeration pipe is a PVC flower pipe with a plurality of air holes.
Specifically, the water inlet flowmeter and the medicine inlet flowmeter are both flowmeters with 485 communication functions, and the flowmeters are connected with the control system in a 485 communication mode.
Referring to fig. 2, in a specific embodiment, the number of the drug pools is plural, and only three drug pools are shown in the embodiment. The top of each medicine pool is provided with one liquid level meter, the medicine outlet pipeline of each medicine pool is provided with one electric valve for medicine outlet, and the medicine outlet pipelines of all the medicine pools are connected in parallel and then output. Each medicine pool can be allocated with one water inlet flow meter and one medicine inlet flow meter, but in this embodiment, preferably, a plurality of medicine pools share one water inlet flow meter and one medicine inlet flow meter, specifically: when the medicine pond has a plurality ofly, the inlet channel include into water trunk line and with a plurality of branch pipelines of intaking that the trunk line is connected, a plurality of branch pipelines of intaking are connected with a plurality of medicine ponds one-to-one, it sets up one on the trunk line to intake flowmeter, each it sets up one on the branch pipeline of intaking just only one at any moment when dispensing the motorised valve of intaking opens to intake. Similarly, the medicine feeding pipeline comprises a medicine feeding main pipeline and a plurality of medicine feeding branch pipelines connected with the medicine feeding main pipeline, the medicine feeding branch pipelines are connected with the medicine pools in a one-to-one correspondence mode, the medicine feeding main pipeline is provided with one medicine feeding flow meter, and each medicine feeding branch pipeline is provided with one medicine feeding electric valve and only one medicine feeding electric valve is opened at any time when medicine is dispensed. Furthermore, an electric main water inlet valve and a manual valve are arranged on the main water inlet pipeline; the medicine feeding main pipeline is connected with a plurality of corresponding stock solution pools through a plurality of medicine feeding branch pipes, and each medicine feeding branch pipe is provided with an electric valve and a manual valve; each water inlet branch pipeline and each medicine inlet branch pipeline are provided with a manual valve; each medicine outlet pipeline is also provided with a manual valve. The aeration pipes of the medicine tanks are connected to the same gas transmission pipeline which is filled with compressed air, and the gas transmission pipeline is provided with a manual valve.
When a plurality of medicine pools are provided, in order to realize the control of the medicine pools, the invention defines four states of the medicine pools including the use state, the standby state, the to-be-dispensed state and the dispensing state. Referring to fig. 3, when the medicine outlet valve of the medicine tank is opened in place, the state of the medicine tank is defined as the in-use state; when the medicine outlet valve of the medicine pool is closed in place, if the liquid level value of the medicine pool is greater than the automatic switching liquid level, the state of the medicine pool is defined as a standby state, and if the liquid level value of the medicine pool is less than or equal to the automatic switching liquid level, the state of the medicine pool is defined as a medicine dispensing state; and under the state of waiting for dispensing, if an automatic dispensing signal input by a user is received, defining the state of the medicine pool as a dispensing state.
In specific control, when the level value of the current medicine pool in the using state is less than or equal to the automatic switching liquid level, the control system closes the medicine outlet valve of the medicine pool in the using state to switch the medicine pool in the using state to the to-be-dispensed state, selects one medicine pool from other medicine pools in the standby state, and opens the medicine outlet valve of the selected medicine pool to switch the selected medicine pool to the using state. Here, when the medicine pool in the in-use state is switched to the medicine to be dispensed, the medicine pool in the standby state is not randomly selected to be switched to the in-use state, but the medicine pool in the standby state is switched to the in-use state by sequentially traversing adjacent other medicine pools according to the spatial distance from near to far until one medicine pool in the standby state is found. For example, in fig. 3, the medicine pools 2 and 3 are standby each other, if the state of the medicine pool 1 is the in-use state, and when the liquid level of the medicine pool 1 is less than or equal to the automatic switching liquid level, the medicine outlet valve of the medicine pool 1 is closed, if the states of the medicine pools 2 and 3 are in the standby state, the medicine pool 2 is preferentially switched to the adjacent medicine pool 2, and the medicine outlet valve of the medicine pool 2 is opened, and if the state of the medicine pool 2 is not in the standby state, the medicine pool 2 is skipped to be switched to the medicine pool 3, and the medicine outlet valve of the medicine pool 3 is opened. And the circulation is analogized, and the automatic switching is realized.
For the medicine pool switched to the state to be dispensed, the medicine pool can be directly controlled to enter the state in dispensing theoretically, but in practical application, the authorization generally needs to be confirmed manually, and an operator needs to input an automatic dispensing signal for the medicine pool in the certain state to be dispensed. The control system opens the water inlet electric valve and the medicine inlet electric valve of a certain medicine pool in a to-be-dispensed state when receiving an automatic medicine dispensing signal of the certain medicine pool in the to-be-dispensed state input by a user, so that the certain medicine pool in the to-be-dispensed state enters the in-dispensing state, closes the water inlet electric valve and opens the aeration electromagnetic valve after the water flow monitored by the water inlet flow meter and the medicine inlet flow meter of the medicine pool in the in-dispensing state reaches the corresponding demand, and closes the aeration electromagnetic valve after the aeration electromagnetic valve is opened for a preset time so that the medicine pool in the in-dispensing state enters the standby state.
More specifically, referring to fig. 4, the dispensing control flow in the dispensing state is as follows:
1) aiming at a medicine pool in a certain state to be dispensed, a user sets a stock solution demand and a target level value and sends an automatic dispensing signal to a control system;
2) the control system receives an automatic dispensing signal input by a user, and calculates water demand according to a level value before dispensing, a stock solution demand and a target level value set by the user and a medicine pool area, which are monitored by the liquid level meter, such as: water demand (target level value-pre-dispensing level value) medicine pool area-stock solution demand;
2) reading initial accumulated numbers of the water inlet flowmeter and the medicine inlet flowmeter;
3) opening the electric valve for medicine feeding and the electric valve for water feeding, and starting medicine feeding and water feeding in the pool, namely starting dispensing;
4) the method comprises the following steps of calculating the current fed dosage and the current water inflow in real time in the dispensing process, specifically: reading real-time accumulated numbers of the water inlet flow meter and the medicine inlet flow meter in real time, and subtracting the real-time accumulated number from the previously read initial accumulated number to obtain the current medicine inlet amount and the current water inlet amount, wherein the medicine inlet amount is the real-time accumulated number of the medicine inlet flow meter-the initial accumulated number of the medicine inlet flow meter, and the water inlet amount is the real-time accumulated number of the water inlet flow meter-the initial accumulated number of the water inlet flow meter;
5) closing the electric medicine feeding valve when the medicine feeding amount reaches the required amount of the stock solution, and closing the electric water feeding valve when the water feeding amount reaches the required amount of water;
6) the aeration electromagnetic valve is opened after the medicine inlet electric valve and the water inlet electric valve are closed;
7) after the aeration electromagnetic valve is opened for a preset time, the aeration electromagnetic valve is closed, so that the medicine pool in the dispensing state enters a standby state.
The method has the advantages that the PAC dispensing accuracy can be improved, the production control risk of a water plant is reduced, and the water quality guarantee capability is improved; the maintenance cost of equipment is reduced; the workload of personnel is reduced, and the work of dispensing and switching the medicine pools is finished through automatic control.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The accurate medicine dispensing system is characterized by comprising a control system, a water inlet pipeline and a medicine inlet pipeline which are connected with a medicine pool, a water inlet electric valve and a water inlet flow meter which are arranged on the water inlet pipeline, a medicine inlet electric valve and a medicine inlet flow meter which are arranged on the medicine inlet pipeline, an aeration pipe which is arranged on the medicine pool, and an aeration electromagnetic valve which is arranged on the aeration pipe and is used for controlling whether compressed gas enters the aeration pipe or not, wherein the water inlet electric valve, the medicine inlet electric valve, the water inlet flow meter, the medicine inlet flow meter and the aeration electromagnetic valve are respectively connected with the control system, the control system is used for opening the water inlet electric valve and the medicine inlet electric valve when dispensing, and closing the water inlet electric valve and opening the aeration electromagnetic valve after the flow monitored by the water inlet flow meter and the medicine inlet flow meter reaches the corresponding required amount.
2. The precise dispensing system of claim 1, wherein the aerator pipe is laid around the bottom of the drug pool, and the aerator pipe is a PVC perforated pipe with a plurality of air holes.
3. The accurate dispensing system of claim 1, wherein the water inlet flow meter and the drug inlet flow meter are both flow meters with 485 communication function, and the flow meters are connected with the control system in 485 communication mode.
4. The precise dispensing system of claim 1, further comprising a level meter disposed at the top of the drug pool for monitoring a level value of the drug pool, a drug outlet pipe connected to the drug pool, and a drug outlet electric valve disposed on the drug outlet pipe, wherein the level meter and the drug outlet electric valve are respectively connected to the control system.
5. The accurate dispensing system of claim 4, wherein the number of the drug pools is multiple, and the multiple drug pools share one water inlet flow meter and one drug inlet flow meter;
the water inlet pipeline comprises a water inlet main pipeline and a plurality of water inlet branch pipelines connected with the water inlet main pipeline, the plurality of water inlet branch pipelines are connected with the plurality of medicine pools in a one-to-one correspondence mode, the water inlet main pipeline is provided with one water inlet flow meter, each water inlet branch pipeline is provided with one water inlet electric valve, and only one water inlet electric valve is opened at any time during medicine preparation;
the medicine inlet pipeline comprises a medicine inlet main pipeline and a plurality of medicine inlet branch pipelines connected with the medicine inlet main pipeline, the medicine inlet branch pipelines are connected with the medicine pools in a one-to-one correspondence mode, the medicine inlet main pipeline is provided with one medicine inlet flow meter, each medicine inlet branch pipeline is provided with one medicine inlet electric valve, and only one medicine inlet electric valve is opened at any time during medicine preparation;
the top of each medicine pool is provided with one liquid level meter, the medicine outlet pipeline of each medicine pool is provided with one electric valve for medicine outlet, and the medicine outlet pipelines of all the medicine pools are connected in parallel and then output.
6. The precise dispensing system of claim 5, wherein the drug reservoir comprises four states of in-use, standby, to-be-dispensed, and dispensing;
the control system is used for closing the medicine outlet valve of the medicine pool in the using state to switch the medicine pool in the using state to a to-be-dispensed state when the liquid level value of the medicine pool in the using state is less than or equal to the automatic switching liquid level, selecting one medicine pool from other medicine pools in a standby state, and opening the medicine outlet valve of the selected medicine pool to switch the selected medicine pool to the using state;
the control system is also used for opening a water inlet electric valve and a medicine inlet electric valve of a certain medicine pool in a state to be dispensed when an automatic medicine dispensing signal of the certain medicine pool in the state to be dispensed, which is input by a user, is received, so that the certain medicine pool in the state to be dispensed enters a state in dispensing, closing the water inlet electric valve and opening the aeration electromagnetic valve after the water flow monitored by the water inlet flow meter and the medicine inlet flow meter of the medicine pool in the state in dispensing reaches the corresponding demand, and closing the aeration electromagnetic valve after the aeration electromagnetic valve is opened for a preset time so that the medicine pool in the state in dispensing enters a standby state.
7. An accurate dispensing system according to claim 6, wherein the control system switches the in-use reservoir to the ready-to-dispense state by sequentially traversing adjacent reservoirs from near to far according to spatial distance until a reservoir in the ready-to-use state is found.
8. The precision dispensing system of claim 6, wherein the control system, when the reservoir in the ready-to-dispense state is switched to the in-dispense state, specifically, the water demand is calculated according to the liquid level value before the dispensing monitored by the liquid level meter, the stock solution demand and the target liquid level value set by a user and the area of the medicine pool, the initial accumulated number of the water inlet flowmeter and the medicine inlet flowmeter is read, reading the real-time cumulative numbers of the water inlet flowmeter and the medicine inlet flowmeter in real time in the medicine dispensing process, subtracting the initial cumulative number read before from the real-time cumulative number to obtain the current medicine inlet quantity and the current water inlet quantity, and closing the medicine feeding electric valve when the medicine feeding amount reaches the required amount of the stock solution, closing the water inlet electric valve when the water inflow reaches the required amount of the water, closing the medicine feeding electric valve and the water inlet electric valve, then opening the aeration electromagnetic valve, and closing the aeration electromagnetic valve after the aeration electromagnetic valve is opened for a preset time to enable the medicine pool in the medicine dispensing state to enter a standby state.
9. The precise dispensing system of claim 5, wherein the water inlet main pipeline is provided with a water inlet electric main valve and a manual valve; the medicine feeding main pipeline is connected with a plurality of corresponding stock solution pools through a plurality of medicine feeding branch pipes, and each medicine feeding branch pipe is provided with an electric valve and a manual valve; each water inlet branch pipeline and each medicine inlet branch pipeline are provided with a manual valve; each medicine outlet pipeline is also provided with a manual valve.
10. The precise dispensing system of claim 5, wherein the aeration pipes of the plurality of drug pools are connected to the same gas pipeline for introducing compressed air, and the gas pipeline is provided with a manual valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111344993.0A CN114146623A (en) | 2021-11-12 | 2021-11-12 | Accurate medicine dispensing system |
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| CN202111344993.0A CN114146623A (en) | 2021-11-12 | 2021-11-12 | Accurate medicine dispensing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116621250A (en) * | 2023-07-18 | 2023-08-22 | 成都威克瑞节能技术有限公司 | High-efficiency energy-saving intelligent circulating water system based on full-flow optimization |
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2021
- 2021-11-12 CN CN202111344993.0A patent/CN114146623A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116621250A (en) * | 2023-07-18 | 2023-08-22 | 成都威克瑞节能技术有限公司 | High-efficiency energy-saving intelligent circulating water system based on full-flow optimization |
| CN116621250B (en) * | 2023-07-18 | 2023-09-22 | 成都威克瑞节能技术有限公司 | High-efficiency energy-saving intelligent circulating water system based on full-flow optimization |
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