CN103572804A - Water supply device of biochemical instrument and application method thereof - Google Patents
Water supply device of biochemical instrument and application method thereof Download PDFInfo
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- CN103572804A CN103572804A CN201310573490.XA CN201310573490A CN103572804A CN 103572804 A CN103572804 A CN 103572804A CN 201310573490 A CN201310573490 A CN 201310573490A CN 103572804 A CN103572804 A CN 103572804A
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Abstract
The invention provides a water supply device of a biochemical instrument and an application method of the water supply device of the biochemical instrument. A water supply pipe of the water supply device is connected with a buffer container through a water supply valve and a water supply pump. An outlet of the buffer container is connected with each water application valve and a pressure gauge. The upper end of the buffer container is connected with a vent valve. The air supply valve is also connected with a water inlet of the water supply pump. A floating ball liquid level switch in the buffer container is provided with an upper floating ball and a lower floating ball. A control center is connected with the floating ball liquid level switch and a pressure sensor and controls the pump and each valve. The application method of the water supply device of the biochemical instrument comprises the steps that the water supply valve is opened, the water supply pump is started, water is pumped into the buffer container, air in the buffer container is compressed, and when the pressure reaches the pressure upper limit, the water supply valve is closed, and the water supply pump is stopped; one water application valve is opened, and the pressure in the buffer container enables water to be conveyed to a corresponding water application unit; when the pressure in the buffer container is lowered to the lower limit, the water supply valve is opened again, and the water supply pump is started again; when automatic control is applied, the control center controls the water supply valve to be opened and closed and the water supply pump to be started and stopped when the pressure reaches the pressure upper limit and the pressure lower limit and controls an inlet valve and the vent valve to be opened and closed according to a water level upper limit signal and a water level lower limit signal of the floating ball liquid level switch. According to the water supply device of the biochemical instrument, the water outlet pressure is stable, pulsation is not generated, and automatic control is achieved; only one pump is needed, so that cost is low.
Description
Technical field
The present invention relates to biochemical instrument, be specially a kind of water supply installation and using method of biochemical instrument.
Background technology
In biochemical instrument, sample pipetting volume amount will be aspired for stability accurately.Generally need to supply water to the water use sector of various biochemical instruments with pump at present.The pressure of supply water of pump pressurization is constant, as long as control the opening time with water valve, water use sector can obtain the stable water supply volume of expectation.
The configuration mode that is at present the pump of a plurality of water use sectors water supply is mainly two kinds, and a kind of is pump of the independent adapted of each water use sector module, and this mode is controlled simply, just opens the pump of its connection while opening certain with water valve.Because of needs, to configure pump more, and cost is high.Can only the common water pump of adapted, during conventional pump operation, there is " pulsation " phenomenon, cause discharge pressure unstable, affect the accurate of water withdrawal.The conventional pump life-span is relatively short, need to frequently change.And because pump needs frequent starting, reduced again the application life of the motor of drive circuit and pump.
Another kind of configuration is with a pump, to connect the water valve of using of each water use sector.Only use a pump, can select the gear pump of the good brushless electric machine of quality, the life-span of pump is longer, and " pulsation " is less.But pump still needs frequent starting, affect the motor application life of drive circuit and pump; In pump startup moment, pressure of supply water is difficult to unstable.
Summary of the invention
The object of the invention is to design a kind of water supply installation of biochemical instrument, have the buffer container of gas in supply-water pump access sealing, buffer container is connected with water valve with each.
Another object of the present invention is to provide the using method of the water supply installation of above-mentioned biochemical instrument, and supply-water pump work, pumps into buffer container by gas compression in it by press water.When reaching certain pressure, supply-water pump quits work.Certain is opened with water valve, and the pressure in buffer container is sent water into this water use sector.
The water supply installation of the biochemical instrument of the present invention's design, comprise supply-water pump, and a plurality of water valves of using that connect one by one each water use sector, the buffer container that has gas in this water supply installation is also Packed, deionized water water pipe connects the water inlet of supply-water pump through feed water valve, the delivery port of supply-water pump connects buffer container import, and the outlet of buffer container connects respectively uses water valve.The outlet Bonding pressure meter of described buffer container.
Described buffer container upper end connects vent valve.
Steam supply valve import connects source of the gas, and steam supply valve outlet connects supply-water pump water inlet together with feed water valve outlet.
In described buffer container, have floating-ball level switch, this switch comprises upper and lower two ball floats and upper and lower two magnetic reed switch.This water supply installation is furnished with control centre, the input at the holding wire Access Control center of floating-ball level switch, Bonding pressure sensor is gone back in the outlet of buffer container, the input at the holding wire Access Control center of pressure sensor, described feed water valve, vent valve, is the electromagnetic valve that is connected, is subject to its control with control centre with water valve and steam supply valve.The power switch Ye Yu control centre of described supply-water pump connects, controlled by it.
The using method of the water supply installation of above-mentioned biochemical instrument provided by the invention is: first open feed water valve and start supply-water pump, supply-water pump pumps into buffer container by gas compression in it by press water.When pressure gauge shows the upper limits pressure that reaches setting, close feed water valve and supply-water pump.Certain is opened with water valve, and the air pressure in buffer container is sent water into this water use sector.Along with water supply volume increases, the pressure in buffer container declines gradually, when pressure gauge shows the threshold pression that reaches setting, again opens feed water valve and starts supply-water pump.
Described upper limits pressure is 0.10～0.15MPa, and threshold pression is than the low 0.01～0.05MPa of upper limits pressure.
When this device is furnished with control centre, in buffer container, have floating-ball level switch, and each valve is electromagnetic valve.Control centre closes feed water valve and supply-water pump according to the signal of pressure sensor when the upper limits pressure, opens feed water valve and supply-water pump when threshold pression.
During control centre opens feed water valve and starts supply-water pump, control centre controls the keying of admission valve and vent valve according to the floating-ball level switch upper and lower limit water level signal in buffer container.When the dilutional hyponatremia in buffer container, gas are very few, the upper floating ball of floating-ball level switch upwards floats, upper magnetic reed switch is connected, floating-ball level switch sends upper limit water level signal to control centre, steam supply valve is opened by control centre, in the deionized water that supply-water pump pumps into buffer container, sneak into portion gas, when pressure reaches upper limit force value, the signal of pressure sensor is delivered to control centre, and control centre closes steam supply valve and feed water valve supply-water pump; Gas in buffer container is too much, water is when very few, when the lower ball float whereabouts of floating-ball level switch, lower magnetic reed switch are connected, floating-ball level switch sends lower limit water level signal to control centre, vent valve is opened by control centre, emit the portion gas in buffer container, pressure quickly falls to threshold pression value, and the signal of pressure sensor is delivered to control centre, control centre closes vent valve, and the press water that supply-water pump pumps raises buffer container outlet pressure again.When floating-ball level switch no signal Shi， control centre is according to signal controlling feed water valve and the supply-water pump of pressure sensor.
Compared with prior art, the water supply installation of biochemical instrument of the present invention and the advantage of using method are: 1, in buffer container, have compressed air, the pressure differential of its water outlet changes less, can take to pulse free metastable pressure as water use sector water supply; What 2, control centre controlled buffer container automatically according to the bound water level signal of pressure sensor and floating-ball level switch adds water, aerating and venting, easy to use; 3, only need a pump, because there being buffer container, the startup of pump need not be too frequent, relatively extended the application life of pump; 4, because deionized water will just offer water use sector by parked certain hour in buffer container, the gas during standing in water can be precipitated, and has certain froth breaking effect, gas can not occur yet and enter the hydrojet that water pipeline causes; 5, this apparatus structure is simple, and each component costs is low, easy to use, is suitable for promoting.
Accompanying drawing explanation
Fig. 1 is the water supply installation example structure schematic diagram of this biochemical instrument.
Number in the figure is: 1, feed water valve, 2, supply-water pump, 3, buffer container, 4, floating-ball level switch, 5, vent valve, 6, pressure gauge, 7, pressure sensor, 8, water use sector, 9, with water valve, 10, steam supply valve.
The specific embodiment
The water supply installation embodiment of biochemical instrument
The water supply installation embodiment of this biochemical instrument as shown in Figure 1, deionized water water pipe connects the water inlet of supply-water pump 2 through feed water valve 1, steam supply valve 10 imports connect source of the gas, steam supply valve 10 outlets connect supply-water pump 2 water inlets together with feed water valve 1 outlet, the delivery port of supply-water pump 2 connects buffer container 3 imports, and the outlet of buffer container 3 connects 20 with water valve 9.Each connects a water use sector 8 with water valve 9.
3 sealings of described buffer container, in have gas, in it, have floating-ball level switch 4, this floating-ball level switch comprises upper and lower two ball floats and upper and lower two magnetic reed switch.Outlet Bonding pressure meter 6 and the pressure sensor 7 of buffer container 3.Described buffer container 3 upper ends connect vent valve 5.
This routine water supply installation is furnished with control centre, the input at the holding wire Access Control center of floating-ball level switch 4, the input at the holding wire Access Control center of pressure sensor 7, described feed water valve 1, vent valve 5, with water valve 9, be with steam supply valve 10 electromagnetic valve being connected with control centre, the power switch Ye Yu control centre of described supply-water pump 2 connects.
The using method embodiment of the water supply installation of biochemical instrument
This example is the using method of the water supply installation embodiment of above-mentioned biochemical instrument, and control centre first opens feed water valve 1 and starts supply-water pump 2, and supply-water pump 2 work, pump into buffer container 3 by gas compression in it by press water.Control centre receives the signal that pressure sensor 7 reaches the upper limits pressure of setting, closes feed water valve 1 and supply-water pump 2.When certain, with water valve 9, open, the air pressure in buffer container 3 is sent water into this water use sector.Along with water supply volume increases, the pressure in buffer container 3 declines gradually, and control centre receives the signal that pressure sensor 7 reaches the threshold pression of setting, again opens feed water valve 1 and starts supply-water pump 2.
Described upper limits pressure is 0.12MPa, and threshold pression is 0.10MPa.
During control centre opens feed water valve 1 and starts supply-water pump 2, control centre controls the keying of admission valve 10 and vent valve 5 according to the floating-ball level switch 4 upper and lower limit water level signal in buffer container 3.When the dilutional hyponatremia in buffer container 3, gas are very few, the upper floating ball of floating-ball level switch 4 upwards floats, upper magnetic reed switch is connected, floating-ball level switch 4 sends upper limit water level signal to control centre, steam supply valve 10 is opened by control centre, in the deionized water that supply-water pump 2 pumps into buffer container 3, sneak into portion gas, when pressure reaches upper limit force value, the signal of pressure sensor 7 is delivered to control centre, and control centre closes steam supply valve 10 and feed water valve 1, supply-water pump 2; Gas in buffer container 3 is too much, water is when very few, the lower ball float of floating-ball level switch 4 falls, lower magnetic reed switch is connected, floating-ball level switch 4 sends lower limit water level signal to control centre, vent valve 5 is opened by control centre, emit the portion gas in buffer container 3, pressure quickly falls to threshold pression value, the signal of pressure sensor 7 is delivered to control centre, control centre closes vent valve 5, the press water of supply-water pump 2 raises buffer container 3 internal pressures again, reaches limits pressure time control closed center feed water valve 1 processed, supply-water pump 2.
When floating-ball level switch 4 no signal Shi， control centres are according to the signal controlling feed water valve 1 of pressure sensor 7 and supply-water pump 2.
Above-described embodiment, is only the specific case that object of the present invention, technical scheme and beneficial effect are further described, and the present invention is not defined in this.All any modifications of making, be equal to replacement, improvement etc., within being all included in protection scope of the present invention within scope of disclosure of the present invention.
Claims (8)
1. the water supply installation of biochemical instrument, comprises supply-water pump (2), and connects one by one a plurality of with water valve (9) of each water use sector (8), it is characterized in that:
The buffer container (3) that has gas in this water supply installation is also Packed, deionized water water pipe connects the water inlet of supply-water pump (2) through feed water valve (1), the delivery port of supply-water pump (2) connects buffer container (3) import, and the outlet of buffer container (3) connects each and uses water valve (9); The outlet Bonding pressure meter (6) of described buffer container (3).
2. the water supply installation of biochemical instrument according to claim 1, is characterized in that:
Described buffer container (3) upper end connects vent valve (5).
3. the water supply installation of biochemical instrument according to claim 2, is characterized in that:
Steam supply valve (10) import connects source of the gas, and steam supply valve (10) outlet connects supply-water pump (2) water inlet together with feed water valve (1) outlet.
4. the water supply installation of biochemical instrument according to claim 3, is characterized in that:
In described buffer container (3), have floating-ball level switch (4), this switch comprises upper and lower two ball floats and upper and lower two magnetic reed switch.
5. the water supply installation of biochemical instrument according to claim 4, is characterized in that:
This water supply installation is furnished with control centre, the input at the holding wire Access Control center of floating-ball level switch (4), Bonding pressure sensor (7) is gone back in the outlet of buffer container (3), the input at the holding wire Access Control center of pressure sensor (7), described feed water valve (1), vent valve (5), is with steam supply valve (10) electromagnetic valve that is connected, is subject to its control with control centre with water valve (9); The power switch Ye Yu control centre of described supply-water pump (2) connects, controlled by it.
6. the using method of the water supply installation of biochemical instrument according to claim 1, is characterized in that:
First open feed water valve (1) and start supply-water pump (2), supply-water pump (2) pumps into buffer container (3) by gas compression in it by press water; When pressure gauge (6) shows the upper limits pressure that reaches setting, close feed water valve (1) and supply-water pump (2); Certain is opened with water valve (9), and the air pressure in buffer container (3) is sent water into this water use sector (8); When pressure gauge (6) shows the threshold pression that reaches setting, again open feed water valve (1) and start supply-water pump (2).
7. the using method of the water supply installation of biochemical instrument according to claim 6, is characterized in that:
Described upper limits pressure is 0.10～0.15MPa, and threshold pression is than the low 0.01～0.05MPa of upper limits pressure.
8. according to the using method of the water supply installation of the biochemical instrument described in claim 6 or 7, it is characterized in that:
Described buffer container (3) upper end connects vent valve (5), and steam supply valve (10) import connects source of the gas, and outlet connects supply-water pump (2) water inlet together with feed water valve (1);
In described buffer container (3), have floating-ball level switch (4), this switch comprises upper and lower two ball floats and upper and lower two magnetic reed switch;
Described water supply installation is furnished with control centre, the input at the holding wire Access Control center of floating-ball level switch (4), Bonding pressure sensor (7) is gone back in the outlet of buffer container (3), the input at the holding wire Access Control center of pressure sensor (7), described feed water valve (1), vent valve (5), is connected, is subject to the electromagnetic valve of its control with water valve (9) and steam supply valve (10) Jun Yu control centre; The power switch Ye Yu control centre of described supply-water pump (2) connects, controlled by it;
Control centre closes feed water valve (1) and supply-water pump (2) according to the signal of pressure sensor (7) when the upper limits pressure, opens feed water valve (1) and start supply-water pump (2) when threshold pression;
During control centre opens feed water valve (1) and starts supply-water pump (2), control centre controls the keying of admission valve (9) and vent valve (5) according to the upper and lower limit water level signal of the floating-ball level switch (4) in buffer container (3); The upper floating ball of the floating-ball level switch (4) in buffer container (3) upwards floats, upper magnetic reed switch is connected, floating-ball level switch (4) sends upper limit water level signal to control centre, steam supply valve (10) is opened by control centre, entrained gas in the deionized water that supply-water pump (2) pumps into buffer container (3), when reaching upper limit force value Shi， control centre, pressure closes steam supply valve (10) and feed water valve (1), supply-water pump (2); Gas in buffer container (3) is too much, water is when very few, the lower ball float of the floating-ball level switch (4) in buffer container (3) falls, lower magnetic reed switch is connected, floating-ball level switch (4) sends lower limit water level signal to control centre, vent valve (5) is opened by control centre, emit the gas in buffer container (3), pressure quickly falls to threshold pression value, the signal of pressure sensor (7) is delivered to control centre, control centre closes vent valve (5), and the press water that supply-water pump (2) pumps raises buffer container (3) outlet pressure again; When floating-ball level switch (4) no signal Shi， control centre is according to the signal controlling feed water valve (1) of pressure sensor (7) and supply-water pump (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310573490.XA CN103572804A (en) | 2013-11-15 | 2013-11-15 | Water supply device of biochemical instrument and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310573490.XA CN103572804A (en) | 2013-11-15 | 2013-11-15 | Water supply device of biochemical instrument and application method thereof |
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| CN103572804A true CN103572804A (en) | 2014-02-12 |
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| CN201310573490.XA Pending CN103572804A (en) | 2013-11-15 | 2013-11-15 | Water supply device of biochemical instrument and application method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106984579A (en) * | 2017-05-18 | 2017-07-28 | 肖鸿涛 | Washing machine and cleaning method |
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|---|---|---|---|---|
| GB744453A (en) * | 1952-12-15 | 1956-02-08 | Kracht Pumpen Motoren | Automatic air volume control for a liquid supply system |
| CN102359151A (en) * | 2011-01-22 | 2012-02-22 | 山东双轮股份有限公司 | Pressure-superposed water supply device |
| CN202194188U (en) * | 2011-08-18 | 2012-04-18 | 王浩 | Automatic gas complementing type pressure water supplying device |
| CN202347591U (en) * | 2011-12-15 | 2012-07-25 | 山东金鲁城工程材料有限公司 | Automatic water-feed control device for water tower |
| CN203096830U (en) * | 2013-01-23 | 2013-07-31 | 菏泽市金仓压力容器有限公司 | Intelligent type inner and outer enamel full-automatic non-tower water feeder |
| CN203569639U (en) * | 2013-11-15 | 2014-04-30 | 桂林优利特医疗电子有限公司 | Water supply device for biochemical instruments |
-
2013
- 2013-11-15 CN CN201310573490.XA patent/CN103572804A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB744453A (en) * | 1952-12-15 | 1956-02-08 | Kracht Pumpen Motoren | Automatic air volume control for a liquid supply system |
| CN102359151A (en) * | 2011-01-22 | 2012-02-22 | 山东双轮股份有限公司 | Pressure-superposed water supply device |
| CN202194188U (en) * | 2011-08-18 | 2012-04-18 | 王浩 | Automatic gas complementing type pressure water supplying device |
| CN202347591U (en) * | 2011-12-15 | 2012-07-25 | 山东金鲁城工程材料有限公司 | Automatic water-feed control device for water tower |
| CN203096830U (en) * | 2013-01-23 | 2013-07-31 | 菏泽市金仓压力容器有限公司 | Intelligent type inner and outer enamel full-automatic non-tower water feeder |
| CN203569639U (en) * | 2013-11-15 | 2014-04-30 | 桂林优利特医疗电子有限公司 | Water supply device for biochemical instruments |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106984579A (en) * | 2017-05-18 | 2017-07-28 | 肖鸿涛 | Washing machine and cleaning method |
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Application publication date: 20140212 |