CN116713234A - Washing liquid supply device and supply method thereof - Google Patents
Washing liquid supply device and supply method thereof Download PDFInfo
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- CN116713234A CN116713234A CN202310713924.5A CN202310713924A CN116713234A CN 116713234 A CN116713234 A CN 116713234A CN 202310713924 A CN202310713924 A CN 202310713924A CN 116713234 A CN116713234 A CN 116713234A
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- way electromagnetic
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- 239000007788 liquid Substances 0.000 title claims abstract description 297
- 238000005406 washing Methods 0.000 title claims abstract description 125
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000004140 cleaning Methods 0.000 claims abstract description 112
- 238000002347 injection Methods 0.000 claims abstract description 46
- 239000007924 injection Substances 0.000 claims abstract description 46
- 239000000243 solution Substances 0.000 description 5
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005213 imbibition Methods 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229940088597 hormone Drugs 0.000 description 1
- 239000005556 hormone Substances 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention provides a washing liquid supply device which comprises a liquid storage tank, 1 liquid pump, at least 1 electromagnetic valve, a washing station, a controller for controlling the on-off of the electromagnetic valve and a connecting pipeline for connecting all parts, wherein the liquid storage tank is connected with the liquid storage tank; the liquid pump is a diaphragm pump, a liquid inlet and a liquid outlet are formed in the diaphragm pump, and a liquid outlet and a liquid return port are formed in the liquid storage tank; the liquid inlet of the diaphragm pump is connected with the liquid outlet on the liquid storage tank through a connecting pipeline, the liquid outlet of the diaphragm pump is connected with the electromagnetic valve through a connecting pipeline, and the liquid return port of the liquid storage tank is connected with the electromagnetic valve through a connecting pipeline. The invention also provides a washing liquid supply method, which controls the liquid injection amount by controlling the stroke of the single-outlet plunger pump or the valve switching time of the three-way electromagnetic valve. By adopting the invention, the requirements of different cleaning times of different samples can be met through the cooperation of one pump and a plurality of valves, and the liquid injection amount and the cleaning times can be accurately controlled.
Description
Technical Field
The invention belongs to the technical field of medical appliances, and particularly relates to a washing liquid supply device and a washing liquid supply method.
Background
In-vitro diagnostic medical devices are clinical devices for detecting tumor markers, various hormones, and various cells in a human body, and usually require a certain amount of blood to be drawn, mixed with related reagents in a predetermined ratio, reacted, washed, and added with a substrate solution, and then subsequently detected in a detection device. The step of cleaning the sample is very important, and the accuracy and stability of instrument detection can be directly affected by the quality of the cleaning effect, so that higher requirements are placed on the injection amount of the cleaning liquid and the control accuracy of the cleaning times.
The traditional washing liquid supply method is to use a plurality of valves to cooperate with a plurality of pumps to realize the supply of the washing liquid and meet the requirements of different washing times of different types of samples. The washing liquid supply mode has high cost, high requirement on installation space and complex control system.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a washing liquid supply apparatus and a washing liquid supply method, which can supply washing liquid by matching a single pump with a plurality of valves, and solve the problem that a system is too complicated when a plurality of pumps are matched with a plurality of valves to control the supply of washing liquid in the prior art, while satisfying the accuracy requirements for the amount of liquid to be injected and the number of times of washing. It is therefore a first object of the present invention to provide a washing liquid supply device. A second object of the present invention is to provide a method for supplying a washing liquid.
In order to achieve the above purpose, the invention adopts the following technical method:
as a first aspect of the present invention, a washing liquid supply apparatus includes a liquid storage tank, 1 liquid pump, at least 1 solenoid valve, a washing station, a controller for controlling the on-off of the solenoid valve, and a connection pipe for connecting the respective components;
the liquid pump is a diaphragm pump, a liquid inlet and a liquid outlet are formed in the diaphragm pump, and a liquid outlet and a liquid return port are formed in the liquid storage tank; the liquid inlet of the diaphragm pump is connected with the liquid outlet on the liquid storage tank through a connecting pipeline, the liquid outlet of the diaphragm pump is connected with the electromagnetic valve through a connecting pipeline, and the liquid return port of the liquid storage tank is connected with the electromagnetic valve through a connecting pipeline.
According to the invention, the diaphragm pump can be replaced by a single-outlet plunger pump, a liquid outlet is arranged on the liquid storage tank, the liquid outlet on the single-outlet plunger pump is connected with the electromagnetic valve through a connecting pipeline, and the liquid outlet on the liquid storage tank is connected with the electromagnetic valve through a connecting pipeline.
According to the invention, the electromagnetic valve is a three-way electromagnetic valve, and the three-way electromagnetic valve is provided with a COM port, a NO port and an NC port;
the liquid outlet on the diaphragm pump is connected with the COM port of the three-way electromagnetic valve through a connecting pipeline, the liquid return port on the liquid storage tank is connected with the NO port of the three-way electromagnetic valve through a connecting pipeline, and the cleaning station is connected with the NC port on the corresponding three-way electromagnetic valve through a connecting pipeline respectively.
According to the invention, the electromagnetic valve is a three-way electromagnetic valve, and the three-way electromagnetic valve is provided with a COM port, a NO port and an NC port;
the liquid outlet on the single-outlet plunger pump is connected with the COM port of the three-way electromagnetic valve through a connecting pipeline, the liquid outlet on the liquid storage tank is connected with the NO port of the three-way electromagnetic valve through a connecting pipeline, and the cleaning station is connected with the NC port on the corresponding three-way electromagnetic valve through a connecting pipeline respectively.
According to the invention, the number of the three-way electromagnetic valves is 3, and the three-way electromagnetic valves comprise a first three-way electromagnetic valve, a second three-way electromagnetic valve and a third three-way electromagnetic valve; the cleaning stations comprise a first cleaning station, a second cleaning station and a third cleaning station;
the COM port on the first three-way electromagnetic valve is connected with the liquid outlet on the diaphragm pump through a connecting pipeline, the NO port is connected with the COM port on the second three-way electromagnetic valve through a connecting pipeline, and the NC port is connected with the first cleaning station through a connecting pipeline;
the NO port on the second three-way electromagnetic valve is connected with the COM port on the third three-way electromagnetic valve through a connecting pipeline, and the NC port is connected with the second cleaning station through a connecting pipeline;
the NO port on the third three-way electromagnetic valve is connected with the liquid return port on the liquid storage tank through a connecting pipeline, and the NC port is connected with the third cleaning station through a connecting pipeline.
According to the invention, the number of the three-way electromagnetic valves is 3, and the three-way electromagnetic valves comprise a first three-way electromagnetic valve, a second three-way electromagnetic valve and a third three-way electromagnetic valve; the cleaning stations comprise a first cleaning station, a second cleaning station and a third cleaning station;
the COM port on the first three-way electromagnetic valve is connected with the liquid outlet on the single-outlet plunger pump through a connecting pipeline, the NO port is connected with the COM port on the second three-way electromagnetic valve through a connecting pipeline, and the NC port is connected with the first cleaning station through a connecting pipeline;
the NO port on the second three-way electromagnetic valve is connected with the COM port on the third three-way electromagnetic valve through a connecting pipeline, and the NC port is connected with the second cleaning station through a connecting pipeline;
the NO port on the third three-way electromagnetic valve is connected with the liquid outlet on the liquid storage tank through a connecting pipeline, and the NC port is connected with the third cleaning station through a connecting pipeline.
As a second aspect of the present invention, a washing liquid supply method includes a washing liquid supply device; and when the three-way electromagnetic valve does not receive a control signal, the normally open state of COM opening, NO opening and NC opening is kept.
According to the present invention, a washing liquid supply method comprises the steps of:
powering on the washing liquid supply device;
the diaphragm pump works, the washing liquid is sucked out from the liquid outlet of the liquid storage tank, flows to the three-way electromagnetic valve through the diaphragm pump, flows in through the COM port of the three-way electromagnetic valve, and flows out to the liquid storage tank through the NO port of the three-way electromagnetic valve to complete one washing liquid flowing cycle;
repeating the above actions according to the requirement;
the controller sends out a control signal of liquid injection, the NO port of the three-way electromagnetic valve is closed, the NC port of the three-way electromagnetic valve is opened, and the washing liquid flows to the corresponding washing station in the pipeline loop through the NC port of the three-way electromagnetic valve, so that the sample is washed;
after the liquid injection amount of the cleaning station reaches a set target, the controller sends out an electric signal to control the NC port of the three-way electromagnetic valve to be closed and the NO port of the three-way electromagnetic valve to be opened, so that the washing liquid continuously circularly flows in the pipeline loop, and the liquid injection amount of the cleaning station is controlled by controlling the time for opening the NC port of the three-way electromagnetic valve.
According to the present invention, a washing liquid supply method comprises the steps of:
powering on the washing liquid supply device;
the single-outlet plunger pump works, wash liquid is sucked out from a liquid outlet of the liquid storage tank, flows in through an NO port of the three-way electromagnetic valve, flows out to the single-outlet plunger pump from a COM port of the three-way electromagnetic valve and enters the pump body;
the controller sends out a control signal of liquid injection, the NO port of the three-way electromagnetic valve is closed, the NC port of the three-way electromagnetic valve is opened, and the single-outlet plunger pump starts liquid discharge;
the washing liquid flows out from the single-outlet plunger pump through a liquid outlet, flows in through a COM (component object) port of the three-way electromagnetic valve and flows out to a corresponding cleaning station through an NC (numerical control) port of the three-way electromagnetic valve, so that a sample is cleaned, and the liquid injection amount of the cleaning station is controlled by controlling the stroke of the pump;
after the set target liquid injection amount is reached, the single-outlet plunger pump stops injecting liquid, the controller sends out an electric signal again, the three-way electromagnetic valve is reset, and the valve is switched to a normally open state that the NO port is opened and the NC port is closed.
According to the invention, the number of the three-way electromagnetic valves is four or more, and the number of the cleaning stations corresponds to the number of the three-way electromagnetic valves.
The invention has the beneficial effects that: the washing liquid is supplied by matching a single pump with a plurality of electromagnetic valves, and the requirements of different washing times of different types of samples are met. And the liquid injection amount can be controlled by controlling the valve switching time of the electromagnetic valve or the stroke of the single-outlet plunger pump so as to meet the accuracy requirements on the cleaning times and the liquid injection amount.
Drawings
FIG. 1 is a schematic view of a washing liquid supply apparatus using a diaphragm pump as a liquid pump according to the present invention;
FIG. 2 is a schematic diagram of the structure of a three-way solenoid valve;
FIG. 3 is a schematic flow chart of a method for supplying washing liquid by using a diaphragm pump as a liquid pump according to the invention;
FIG. 4 is a schematic view of a lotion supply apparatus using a single outlet plunger pump as a liquid pump according to the present invention;
fig. 5 is a schematic flow chart of a method for supplying washing liquid by using a single-outlet plunger pump as a liquid pump according to the invention.
In the figure: 1. a liquid storage tank; 11. a liquid outlet of the liquid storage tank; 12. a liquid return port of the liquid storage tank; 2. a diaphragm pump; 21. a liquid inlet of the diaphragm pump; 22. a diaphragm pump liquid outlet; 3. a single outlet plunger pump; 31. a plunger pump liquid outlet; 4. a valve assembly; 41. a first three-way electromagnetic valve; 42. a second three-way electromagnetic valve; 43. a third three-way electromagnetic valve; 5. cleaning the assembly; 51. a first cleaning station; 52. a second cleaning station; 53. a third cleaning station; 401. COM port of three-way electromagnetic valve; 402. a NO port of the three-way electromagnetic valve; 403. NC port of three-way electromagnetic valve; 404. and a wiring port.
Detailed Description
In order that those skilled in the art will more fully understand the technical solutions of the present invention, exemplary embodiments of the present invention will be described more fully and in detail below with reference to the accompanying drawings. It should be apparent that the following description of one or more embodiments of the invention is merely one or more of the specific ways in which the technical solutions of the invention may be implemented and is not intended to be exhaustive. It should be understood that the technical solution of the present invention may be implemented in other ways belonging to one general inventive concept, and should not be limited by the exemplary described embodiments. All other embodiments, which may be made by one or more embodiments of the invention without inventive faculty, are intended to be within the scope of the invention. In the following embodiments, the washing liquid supply apparatus and the washing liquid supply method according to the present invention will be described by taking three-way solenoid valves included in the washing liquid supply apparatus as an example.
Example 1 washing liquid supply apparatus Using diaphragm Pump as liquid Pump
As shown in fig. 1, the washing liquid supply device using a diaphragm pump as a liquid pump includes a liquid storage tank 1, a diaphragm pump 2, a first three-way electromagnetic valve 41, a second three-way electromagnetic valve 42, a third three-way electromagnetic valve 43, a first cleaning station 51, a second cleaning station 52, a third cleaning station 53 and a controller, wherein a liquid outlet 11 and a liquid return port 12 are arranged on the liquid storage tank 1, and a liquid inlet 21 and a liquid outlet 22 are arranged on the diaphragm pump 2.
The first three-way electromagnetic valve 41, the second three-way electromagnetic valve 42 and the third three-way electromagnetic valve 43 have the same structure, and are provided with a COM port 401, a NO port 402, an NC port 403 and a wiring port 404 as shown in FIG. 2, wherein the wiring port 404 is used for being connected with a controller, and the on-off of the three-way electromagnetic valves is controlled by the controller. COM port 401 is the common port, NO port 402 is the normally open port, and NC port 403 is the normally closed port.
The liquid outlet 11 on the liquid storage tank 1 is connected with the liquid inlet 21 on the diaphragm pump 2 through a pipeline, the liquid outlet 22 on the diaphragm pump 2 is connected with the COM port 401 on the first three-way electromagnetic valve 41 through a pipeline, the NO port 402 on the first three-way electromagnetic valve 41 is connected with the COM port 401 on the second three-way electromagnetic valve 42 through a pipeline, the NO port 402 on the second three-way electromagnetic valve 42 is connected with the COM port 401 on the third three-way electromagnetic valve 43 through a pipeline, and the NO port 402 on the third three-way electromagnetic valve 43 is connected with the liquid return port 12 on the liquid storage tank 1 through a pipeline.
NC ports 403 on the first, second, and third three-way solenoid valves 41, 42, and 43 are connected to the first, second, and third cleaning stations 51, 52, and 53, respectively, through pipes.
The first three-way electromagnetic valve 41, the second three-way electromagnetic valve 42 and the third three-way electromagnetic valve 43 are respectively connected with the same controller through wiring ports 404 arranged on the three-way electromagnetic valves, the diaphragm pump 2 is also connected with the controller, and the controller can control the working state of the diaphragm pump 2.
The controller controls the flowing direction of the washing liquid in the pipeline by controlling the valve opening and closing states of the first three-way electromagnetic valve 41, the second three-way electromagnetic valve 42 and the third three-way electromagnetic valve 43. When the power is not turned on or the control signal is not received, the valves of the first three-way electromagnetic valve 41, the second three-way electromagnetic valve 42 and the third three-way electromagnetic valve 43 are in a normally open state, namely the COM port 401 is opened, the NO port 402 is opened, and the NC port 403 is closed.
When the motor driving device of the diaphragm pump 2 is started, diaphragms at two sides start vibrating, a negative pressure area is formed in the pump cavity, so that a valve at the liquid inlet 21 is opened, washing liquid is sucked out of the liquid storage tank 1, and the washing liquid flows into a diaphragm chamber of the diaphragm pump 2 through a connecting pipeline; the diaphragm continues vibrating, the pressure in the diaphragm chamber changes, the valve at the liquid inlet 21 is closed, the valve at the liquid outlet 22 is opened, and the washing liquid is discharged from the diaphragm chamber through the liquid outlet 22; this process is repeated so that the washing liquid is continuously sucked into and discharged from the diaphragm pump 2, thereby achieving a flow of the washing liquid in the pipe.
Example 2 method for supplying washing liquid Using diaphragm Pump as liquid Pump
Powering on the washing liquid supply device described in embodiment 1, starting the diaphragm pump 2 to work after receiving a control signal, sucking the washing liquid from the liquid storage tank 1, flowing the washing liquid to the liquid inlet 21 of the diaphragm pump 2 through the liquid outlet 11 of the liquid storage tank 1 and a pipeline, flowing the washing liquid out of the liquid outlet 22 of the diaphragm pump, and flowing the washing liquid to the first three-way electromagnetic valve 41 through the pipeline;
inflow from the COM port of the first three-way electromagnetic valve 41, outflow from the NO port, and flow to the second three-way electromagnetic valve 42 through the pipe;
inflow from the COM port of the second three-way electromagnetic valve 42, outflow from the NO port, and flow to the third three-way electromagnetic valve 43 through a pipe;
the liquid flows in from the COM port of the third three-way electromagnetic valve 31, flows out from the NO port, flows to the liquid storage tank 1 through a pipeline, and flows back to the liquid storage tank 1 from the liquid return port 12 of the liquid storage tank 1;
the above-mentioned actions are repeated, so that the cyclic reciprocating of the washing liquor in the pipeline loop can be implemented.
As shown in fig. 3, a flow chart of a method for supplying a washing liquid using a diaphragm pump as a liquid pump is shown.
According to the cleaning times input by a user and the liquid injection amount of each cleaning, the controller sends a control signal, the NO port of the first three-way electromagnetic valve 41 is closed, the NC port is opened, the washing liquid circulating in the pipeline loop flows from the NC port of the first three-way electromagnetic valve 41 to the first cleaning station 51, and the sample positioned in the first cleaning station 51 is cleaned for the first time; whether the target liquid injection amount is reached is determined based on the time the NC port is opened, and after the liquid injection amount is reached, the first three-way solenoid valve 41 is switched from the NC port back to the NO port, and the liquid injection to the first cleaning station 51 is stopped. If the number of times of cleaning input by the user is 1, the diaphragm pump 2 stops working, and the cleaning is finished; if the number of times of washing input by the user is greater than 1, the diaphragm pump 2 continues to operate, and the washing liquid continues to circulate in the pipe loop.
If the number of times of cleaning is 2 or more, after the liquid injection of the first cleaning station 51 is stopped, the controller sends a control signal, the NO port of the second three-way electromagnetic valve 42 is closed, the NC port is opened, the cleaning liquid flows into the second three-way electromagnetic valve 42 from the NO port of the first three-way electromagnetic valve 41 through a pipeline, flows in from the COM port, flows out from the NC port, flows into the second cleaning station 52, injects liquid into the second cleaning station 52, and performs the second cleaning on the sample positioned in the second cleaning station 52; whether the target liquid injection amount is reached is judged according to the time when the NC port is opened, and after the liquid injection amount is reached, the second three-way electromagnetic valve 42 is switched from the NC port to the NO port, and the liquid injection to the second cleaning station 52 is stopped. If the number of times of cleaning input by the user is 2, the diaphragm pump 2 stops working, and the cleaning is finished; if the number of times of washing input by the user is greater than 2, the diaphragm pump 2 continues to operate and the washing liquid continues to circulate in the pipe loop.
If the number of times of washing is 3 or more, after the second washing station 52 is stopped, the controller sends a control signal, the NO port of the third three-way electromagnetic valve 43 is closed, the NC port is opened, the washing liquid flows from the NO port of the second three-way electromagnetic valve 42 to the third three-way electromagnetic valve 43 through the pipeline, flows in from the COM port, flows out from the NC port, flows to the third washing station 53 to carry out the third washing on the sample positioned at the third washing station 53, judges whether the target liquid injection amount is reached according to the time when the NC port is opened, and after the liquid injection amount is reached, the third three-way electromagnetic valve 43 is switched from the NC port back to the NO port, and the liquid injection to the third washing station 53 is stopped. If the number of times of cleaning input by the user is 3, the diaphragm pump 2 stops working, and the cleaning is finished; if the number of times of washing input by the user is greater than 3, the diaphragm pump 2 continues to operate and the washing liquid continues to circulate in the pipe loop.
If the number of times of cleaning is greater than 3, repeating the above operation steps, namely, controlling the NO port of the first three-way electromagnetic valve 41 to switch to the NC port again, so that the cleaning solution flows to the first cleaning station 51, cleaning the sample for the 4 th time, and circulating again as shown in fig. 3; or alternatively, the process may be performed,
the number of the three-way electromagnetic valve and the cleaning stations is increased, so that more times of cleaning of samples are realized.
As described above, the number of times of washing the sample may be unlimited by increasing the number of three-way solenoid valves and washing stations or performing an unlimited number of cyclic operations with a limited number of three-way solenoid valves and washing stations.
It should be noted that the valve opening and closing sequence of the first, second and third three-way solenoid valves is not necessarily specific, that is, the first cleaning can be performed on the sample by controlling the valve of the first three-way solenoid valve at the first cleaning station, the first cleaning can be performed on the sample by controlling the valve of the second three-way solenoid valve at the second cleaning station, and the second cleaning can be performed on the sample by controlling the valve of the third three-way solenoid valve at the third cleaning station.
It should be noted that, in this embodiment, the washing liquid circulates in the pipeline loop after the power is turned on, and the control of the liquid injection amount is achieved by controlling the switching time of the valve of the three-way electromagnetic valve, so that the three-way electromagnetic valve with strong shock resistance needs to be selected, so that the valve can be quickly switched after receiving the control signal, and the liquid injection amount to the cleaning station can be accurately controlled.
Example 3 washing liquid supply apparatus Using Single Outlet plunger Pump as liquid Pump
As shown in fig. 4, the washing liquid supply device using the single-outlet plunger pump as the liquid pump includes a liquid storage tank 1, a single-outlet plunger pump 3, a first three-way electromagnetic valve 41, a second three-way electromagnetic valve 42, a third three-way electromagnetic valve 43, a first washing station 51, a second washing station 52, a third washing station 53 and a controller, wherein a liquid outlet 11 is provided on the liquid storage tank 1, and a liquid outlet 31 is provided on the single-outlet plunger pump 3.
The first three-way electromagnetic valve 41, the second three-way electromagnetic valve 42 and the third three-way electromagnetic valve 43 have the same structure, and are provided with a COM port 401, a NO port 402, an NC port 403 and a wiring port 404 as shown in FIG. 2, wherein the wiring port 404 is used for being connected with a controller, and the on-off of the three-way electromagnetic valves is controlled by the controller. COM port 401 is the common port, NO port 402 is the normally open port, and NC port 403 is the normally closed port.
The liquid outlet 31 of the single-outlet plunger pump 3 is connected with the COM port 401 of the first three-way electromagnetic valve 41 through a connecting pipeline, the NO port 402 of the first three-way electromagnetic valve 41 is connected with the COM port 401 of the second three-way electromagnetic valve 42 through a connecting pipeline, the NO port 402 of the second three-way electromagnetic valve 42 is connected with the COM port 401 of the third three-way electromagnetic valve 43 through a connecting pipeline, and the NO port 402 of the third three-way electromagnetic valve 43 is connected with the liquid outlet 11 of the liquid storage tank 1 through a connecting pipeline;
NC ports 403 on the first, second, and third three-way solenoid valves 41, 42, and 43 are connected to the first, second, and third cleaning stations 51, 52, and 53, respectively, through connection pipes, and are connected to the same controller through connection ports 404 provided thereon, and the single-outlet plunger pump 3 is also connected to the controller, and the working state of the single-outlet plunger pump is controlled by the controller.
When the power is not turned on or the control signal is not received, the valves of the first three-way electromagnetic valve 41, the second three-way electromagnetic valve 42 and the third three-way electromagnetic valve 43 are all in a normally open state, that is, the COM port 401 is opened, the NO port 402 is opened, and the NC port 403 is closed.
When the motor driving device of the single-outlet plunger pump 3 is started, the shaft in the pump body starts to rotate, the plunger on the shaft also rotates, when the plunger approaches the suction inlet of the pump body, the pressure in the pump body is reduced, and washing liquid enters the pump body; with the rotation of the shaft, the plunger pushes the liquid to the liquid outlet of the pump body and flows out from the liquid outlet, so that the liquid suction and liquid discharge operation of the single-outlet plunger pump 3 is realized; and the control of the liquid injection amount of the cleaning station is realized by controlling the stroke of the pump.
Example 4 method for supplying washing liquid Using Single-Outlet plunger Pump as liquid Pump
As shown in fig. 5, a flow chart of a method for supplying a washing liquid using a single-outlet plunger pump as a liquid pump is shown.
The washing liquid supply device described in example 3 was turned on, the user inputted the number of washing times and the amount of liquid to be injected for each washing, and the controller sent a control signal.
After receiving the control signal of imbibition, the single-outlet plunger pump 3 starts to work, the washing liquid is sucked up from the liquid storage tank 1, the washing liquid enters the pipeline through the liquid outlet 11 of the liquid storage tank 1 and flows to the third three-way electromagnetic valve 43, the washing liquid sequentially passes through the third three-way electromagnetic valve 43, the second three-way electromagnetic valve 42 and the first three-way electromagnetic valve 41, flows to the single-outlet plunger pump 3 from the COM port of the first three-way electromagnetic valve 41 and enters the pump body through the liquid outlet 31 on the plunger pump 3, when the quantity of the sucked washing liquid is enough, the controller sends out the control signal, and the single-outlet plunger pump 3 stops imbibition.
When the liquid injection control signal is sent, the first three-way electromagnetic valve 41 is switched from the NO port to the NC port, namely, the NO port is closed, the NC port is opened, and the single-outlet plunger pump 3 starts liquid injection. The washing liquid flows out from the liquid outlet 31 of the single-outlet plunger pump 3 and flows to the first three-way electromagnetic valve 41 through a pipeline; the sample flows in from the COM port of the first three-way electromagnetic valve 41, flows out from the NC port, flows to the first cleaning station 51 through a pipeline, and performs a first cleaning operation on the sample positioned at the first cleaning station 51; the injection amount is controlled by controlling the stroke of the single-outlet plunger pump, and when the injection amount reaches a set target, the controller sends out a control signal, the plunger pump stops injecting the liquid, and the first three-way electromagnetic valve 41 is switched from the NC port to the NO port. If the number of times of washing input by the user is 1, the single-outlet plunger pump 3 stops working, and the washing is ended.
If the number of times of washing input by the user is 2 or more, the controller sends a control signal to start the injection of the liquid into the second washing station 52 after the injection of the liquid into the first washing station 51 is completed. The second three-way electromagnetic valve 42 is switched from the NO port to the NC port, the washing liquid flows out from the liquid outlet 31 of the single-outlet plunger pump 3, flows through the first three-way electromagnetic valve 41 through a pipeline and flows into the second three-way electromagnetic valve 42; flowing in from the COM port of the second three-way electromagnetic valve 42, flowing out from the NC port, flowing to the second cleaning station 52 through a pipeline, and performing a second cleaning operation on the sample positioned at the second cleaning station 52; the injection amount is controlled by controlling the stroke of the single-outlet plunger pump, and when the injection amount reaches a set target, the controller sends out a control signal, the plunger pump stops injecting the liquid, and the second three-way electromagnetic valve 42 is switched from the NC port to the NO port. If the number of times of washing input by the user is 2, the single-outlet plunger pump 3 stops working, and the washing is ended.
If the number of times of washing input by the user is 3 or more, the controller sends out a control signal to start the injection of the liquid into the third washing station 53 after the injection of the liquid into the second washing station 52 is completed. The third three-way electromagnetic valve 43 is switched from the NO port to the NC port, the washing liquid flows out from the liquid outlet 31 of the single-outlet plunger pump 3, flows through the first three-way electromagnetic valve 41 and the second three-way electromagnetic valve 42 through pipelines, and flows to the third three-way electromagnetic valve 43; flowing in from the COM port of the third three-way electromagnetic valve 43, flowing out from the NC port, flowing to the third cleaning station 53 through a pipeline, and performing a third cleaning operation on the sample positioned at the third cleaning station 53; the injection amount is controlled by controlling the stroke of the single-outlet plunger pump, when the injection amount reaches a set target, the controller sends out a control signal, the plunger pump stops injecting liquid, and the third three-way electromagnetic valve 43 is switched from the NC port to the NO port. If the number of times of washing input by the user is 3, the single-outlet plunger pump 3 stops working, and the washing is finished.
If the number of times of cleaning input by the user is greater than 3, repeating the above operation after the liquid injection to the third cleaning station 53 is completed, and performing the liquid injection operation to the first cleaning station 51, thereby realizing the fourth cleaning to the sample; or the requirement on more cleaning times of the sample is realized by increasing the number of the three-way electromagnetic valves and the cleaning stations.
However, it should be noted that the pump body volume of the single-outlet plunger pump used in this embodiment is limited, and a single-outlet plunger pump with a suitable volume needs to be selected according to the requirement in the actual use process, and when the cleaning operation is performed for more than 3 times, if the total liquid suction amount is greater than the volume of the single-outlet plunger pump, the liquid suction can be performed again after the 3 liquid injection operations are performed.
It should be noted that the valve opening and closing sequence of the first, second, and third three-way electromagnetic valves is not necessarily specific, namely: the first cleaning of the sample can be performed at the first cleaning station by controlling the valve of the first three-way electromagnetic valve, the first cleaning of the sample can be performed at the second cleaning station by controlling the valve of the second three-way electromagnetic valve, and the second cleaning of the sample can be performed at the third cleaning station by controlling the valve of the third three-way electromagnetic valve.
Although one or more embodiments of the present invention have been described above, it will be appreciated by those of ordinary skill in the art that the invention can be embodied in any other form without departing from the spirit or scope thereof. The above-described embodiments are therefore intended to be illustrative rather than limiting, and many modifications and substitutions will now be apparent to those of ordinary skill in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (10)
1. The washing liquid supply device is characterized by comprising a liquid storage tank, 1 liquid pump, at least 1 electromagnetic valve, a washing station, a controller for controlling the on-off of the electromagnetic valve and a connecting pipeline for connecting all the components;
the liquid pump is a diaphragm pump, a liquid inlet and a liquid outlet are formed in the diaphragm pump, and a liquid outlet and a liquid return port are formed in the liquid storage tank; the liquid inlet of the diaphragm pump is connected with the liquid outlet on the liquid storage tank through a connecting pipeline, the liquid outlet of the diaphragm pump is connected with the electromagnetic valve through a connecting pipeline, and the liquid return port of the liquid storage tank is connected with the electromagnetic valve through a connecting pipeline.
2. The washing liquid feeding device as claimed in claim 1, wherein the diaphragm pump is replaced by a single-outlet plunger pump, a liquid outlet is formed in the liquid storage tank, the liquid outlet of the single-outlet plunger pump is connected with the electromagnetic valve through a connecting pipeline, and the liquid outlet of the liquid storage tank is connected with the electromagnetic valve through a connecting pipeline.
3. The washing liquid supply apparatus according to claim 1, wherein the electromagnetic valve is a three-way electromagnetic valve provided with a COM port, a NO port and an NC port;
the liquid outlet on the diaphragm pump is connected with the COM port of the three-way electromagnetic valve through a connecting pipeline, the liquid return port on the liquid storage tank is connected with the NO port of the three-way electromagnetic valve through a connecting pipeline, and the cleaning station is connected with the NC port on the corresponding three-way electromagnetic valve through a connecting pipeline respectively.
4. The washing liquid supply apparatus according to claim 2, wherein the electromagnetic valve is a three-way electromagnetic valve provided with a COM port, a NO port and an NC port;
the liquid outlet on the single-outlet plunger pump is connected with the COM port of the three-way electromagnetic valve through a connecting pipeline, the liquid outlet on the liquid storage tank is connected with the NO port of the three-way electromagnetic valve through a connecting pipeline, and the cleaning station is connected with the NC port on the corresponding three-way electromagnetic valve through a connecting pipeline respectively.
5. The washing liquid supply apparatus as claimed in claim 3, wherein the three-way solenoid valves are 3 in number, including a first three-way solenoid valve, a second three-way solenoid valve, and a third three-way solenoid valve; the cleaning stations comprise a first cleaning station, a second cleaning station and a third cleaning station;
the COM port on the first three-way electromagnetic valve is connected with the liquid outlet on the diaphragm pump through a connecting pipeline, the NO port is connected with the COM port on the second three-way electromagnetic valve through a connecting pipeline, and the NC port is connected with the first cleaning station through a connecting pipeline;
the NO port on the second three-way electromagnetic valve is connected with the COM port on the third three-way electromagnetic valve through a connecting pipeline, and the NC port is connected with the second cleaning station through a connecting pipeline;
the NO port on the third three-way electromagnetic valve is connected with the liquid return port on the liquid storage tank through a connecting pipeline, and the NC port is connected with the third cleaning station through a connecting pipeline.
6. The washing liquid supply apparatus as claimed in claim 4, wherein the three-way solenoid valves are 3 in number, including a first three-way solenoid valve, a second three-way solenoid valve, and a third three-way solenoid valve; the cleaning stations comprise a first cleaning station, a second cleaning station and a third cleaning station;
the COM port on the first three-way electromagnetic valve is connected with the liquid outlet on the single-outlet plunger pump through a connecting pipeline, the NO port is connected with the COM port on the second three-way electromagnetic valve through a connecting pipeline, and the NC port is connected with the first cleaning station through a connecting pipeline;
the NO port on the second three-way electromagnetic valve is connected with the COM port on the third three-way electromagnetic valve through a connecting pipeline, and the NC port is connected with the second cleaning station through a connecting pipeline;
the NO port on the third three-way electromagnetic valve is connected with the liquid outlet on the liquid storage tank through a connecting pipeline, and the NC port is connected with the third cleaning station through a connecting pipeline.
7. A washing liquid supply method, comprising the washing liquid supply apparatus according to any one of claims 1 to 4, wherein the three-way solenoid valve is kept in a normally open state in which the COM port is opened, the NO port is opened, and the NC port is closed when NO control signal is received.
8. The washing liquid supply method as claimed in claim 7, comprising the steps of:
powering on the washing liquid supply device;
the diaphragm pump works, the washing liquid is sucked out from the liquid outlet of the liquid storage tank, flows to the three-way electromagnetic valve through the diaphragm pump, flows in through the COM port of the three-way electromagnetic valve, and flows out to the liquid storage tank through the NO port of the three-way electromagnetic valve to complete one washing liquid flowing cycle;
repeating the above actions according to the requirement;
the controller sends out a control signal of liquid injection, the NO port of the three-way electromagnetic valve is closed, the NC port of the three-way electromagnetic valve is opened, and the washing liquid flows to the corresponding washing station in the pipeline loop through the NC port of the three-way electromagnetic valve, so that the sample is washed;
after the liquid injection amount of the cleaning station reaches a set target, the controller sends out an electric signal to control the NC port of the three-way electromagnetic valve to be closed and the NO port of the three-way electromagnetic valve to be opened, so that the washing liquid continuously circularly flows in the pipeline loop, and the liquid injection amount of the cleaning station is controlled by controlling the time for opening the NC port of the three-way electromagnetic valve.
9. The washing liquid supply method as claimed in claim 7, comprising the steps of:
powering on the washing liquid supply device;
the single-outlet plunger pump works, wash liquid is sucked out from a liquid outlet of the liquid storage tank, flows in through an NO port of the three-way electromagnetic valve, flows out to the single-outlet plunger pump from a COM port of the three-way electromagnetic valve and enters the pump body;
the controller sends out a control signal of liquid injection, the NO port of the three-way electromagnetic valve is closed, the NC port of the three-way electromagnetic valve is opened, and the single-outlet plunger pump starts liquid discharge;
the washing liquid flows out from the single-outlet plunger pump through a liquid outlet, flows in through a COM (component object) port of the three-way electromagnetic valve and flows out to a corresponding cleaning station through an NC (numerical control) port of the three-way electromagnetic valve, so that a sample is cleaned, and the liquid injection amount of the cleaning station is controlled by controlling the stroke of the pump;
after the set target liquid injection amount is reached, the single-outlet plunger pump stops injecting liquid, the controller sends out an electric signal again, the three-way electromagnetic valve is reset, and the valve is switched to a normally open state that the NO port is opened and the NC port is closed.
10. The washing liquid supply method according to claim 7, wherein the number of the three-way solenoid valves is four or more, and the number of the washing stations corresponds to the number of the three-way solenoid valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310713924.5A CN116713234A (en) | 2023-06-15 | 2023-06-15 | Washing liquid supply device and supply method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310713924.5A CN116713234A (en) | 2023-06-15 | 2023-06-15 | Washing liquid supply device and supply method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116713234A true CN116713234A (en) | 2023-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310713924.5A Pending CN116713234A (en) | 2023-06-15 | 2023-06-15 | Washing liquid supply device and supply method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116713234A (en) |
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2023
- 2023-06-15 CN CN202310713924.5A patent/CN116713234A/en active Pending
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