CN1209277C - Constant-pressure liquid feeding device - Google Patents
Constant-pressure liquid feeding device Download PDFInfo
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- CN1209277C CN1209277C CN 02139542 CN02139542A CN1209277C CN 1209277 C CN1209277 C CN 1209277C CN 02139542 CN02139542 CN 02139542 CN 02139542 A CN02139542 A CN 02139542A CN 1209277 C CN1209277 C CN 1209277C
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- liquid
- storage container
- liquid storage
- constant
- induction opening
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Abstract
The present invention relates to a constant-pressure liquid supply device which comprises one or two or more than two first liquid storage containers connected in series and a second storage container, wherein the left side of the bottom of the single liquid storage container is connected with an air inlet, and the right side of the bottom is connected to a liquid using container through a connecting pipe; the left parts of the bottoms of the first liquid storage containers connected in series are connected with the air inlet, and the right sides of the bottoms are connected with valves and a liquid and air outlet hole in sequence; the liquid and air outlet hole is connected with a liquid and air inlet hole of the second liquid storage container through a connecting pipe, the liquid and air inlet hole is connected with an air inlet valve at the lower part of the second liquid storage container, and the right side of the bottom of the second liquid storage container is connected with a liquid using three-way valve. The present invention has the characteristics of simple structure and convenient use. The liquid level stability can be kept at 1mm, and the reading accuracy of liquid supply quantity can reach 1.0 ml to 0.2 ml. When the liquid supply quantity is 100 ml/s, the liquid level stability is controlled within the range of 3mm to 5mm. The present invention provides a constant-pressure liquid supply device for teaching, scientific research and production and has large economical and social benefits.
Description
One, technical field
The present invention relates to constant-pressure liquid supply device, be specially adapted to the accurate a kind of device of read-out information of liquid supply rate.
Two, background technology
The main everyways of using such as its function of liquid feed device are more single on the present market at home, be roughly float-ball type and self-overflow type liquid feed device, as: the liquid feed device of production of units such as Shanghai wind and thunder liquidometer factory, Dalian northern measurement and control system company, it all is more popular liquid feed device, can not satisfy the accuracy requirement in fields such as scientific research and teaching, the accuracy of measurement that exists poor liquid supply rate is not high, defectives such as read untrue.This device has remedied float-ball type and self-overflow type can't the accurate Calculation fluid volume and problem such as the feed flow ground roll is moving bigger, and liquid supply rate can be accurate to milliliter or zero point several milliliters precision, and can make liquid level be constant at a certain position.
Three, summary of the invention
The purpose of this invention is to provide a kind of liquid level that makes and be constant at a certain position, with liquid supply rate be accurate to the milliliter or zero point several milliliters of precision constant-pressure liquid supply device.
Realize that the goal of the invention technical scheme is to solve like this: by liquid storage container and induction opening, form with liquid mouth and connection pipe, its improvements are that this device comprises having two polyphone bonded assembly first liquid storage containers and second liquid storage container at least, the bottom left of its first liquid storage container connects an induction opening, the right side, bottom is connected with valve and fluid air gate in turn, the fluid air gate is connected by the feed liquor induction opening of connection pipe with the second liquid storage container bottom left, the feed liquor induction opening is connected with the admission port valve of the second liquid storage container bottom again, be connected with in the right bottom side of second liquid storage container and use the liquid mouth, the top of liquid storage container is connected with drain tap, first liquid storage container (1
#) and second liquid storage container (2
#) the top time be leak free in work, the atmosphere pressure surface at the atmosphere pressure surface at induction opening (D) perforate height place and fluid air gate (E) perforate height place is in same plane, and the atmosphere pressure surface at feed liquor induction opening (F) perforate height place is than the high 3-5 millimeter of atmosphere pressure surface at induction opening (D) and fluid air gate (E) perforate height place.
The present invention compared with prior art has simple in structurely, easy to use, and for scientific research or produce actual needs stable liquid level is provided, device keeps the stability of liquid level at 1mm, and the accuracy of reading of liquid supply rate reaches as high as 1.0-0.2ml.For the situation with flow quantity big (more than the 100ml/s), the level stability of device is controlled in 3～5mm scope.Having solved float-ball type or self-overflow type can't accurate Calculation fluid volume and the moving bigger problem of feed flow ground roll.For teaching, scientific research, production provide constant-pressure liquid supply device, bigger economic and social benefit is arranged.
Four, description of drawings
Fig. 1 is the serially connected constant-pressure liquid supply device structural representation of the present invention;
Fig. 2 is a separate unit constant-pressure liquid supply device structural representation of the present invention.
Five, the specific embodiment
Accompanying drawing is specific embodiments of the invention
Below in conjunction with accompanying drawing content of the present invention is described further.
With reference to Fig. 1, shown in Figure 2, serially connected constant-pressure liquid supply device of the present invention, by liquid storage container and induction opening, form with liquid mouth and connection pipe, this device comprises having two polyphone bonded assembly first liquid storage containers 1 at least
#With second liquid storage container 2
#, its first liquid storage container 1
#Bottom left connect an induction opening D, the right side, bottom is connected with valve G and fluid air gate E in turn, fluid air gate E is by the connection pipe J and second liquid storage container 2
#The feed liquor induction opening F of bottom left connects, feed liquor induction opening F again with second liquid storage container 2
#The admission port valve H of bottom connects, at second liquid storage container 2
#Right bottom side be connected with liquid mouth I, first liquid storage container 1
#With second liquid storage container 2
#The top be connected with drain tap K, first liquid storage container (1
#) and second liquid storage container (2
#) the top time be leak free in work, the atmosphere pressure surface at the atmosphere pressure surface at induction opening (D) perforate height place and fluid air gate (E) perforate height place is in same plane, and the atmosphere pressure surface at feed liquor induction opening (F) perforate height place is than the high 3-5 millimeter of atmosphere pressure surface at induction opening (D) and fluid air gate (E) perforate height place.The separate unit constant-pressure liquid supply device is formed by the liquid storage container π of top seal with liquid container β, and the left side of the liquid storage container π bottom of top seal is connected with induction opening D, and the top is connected with drain tap K, and the right side is connected to on the liquid container β by connection pipe.
The constant-pressure liquid supply device principle
As shown in Figure 2: π is the container of top seal among the figure.β is for using liquid device.A, B, D is an induction opening to 3 of C on same atmosphere pressure surface, and h is A, B among the π, the above liquid height of C atmosphere pressure surface.P is the atmospheric pressure value in the above sealed cavity of liquid side.In device during the each point equilibrium of pressure (this equilibrium point objectively can reach automatically).The C barometric pressure P of ordering then
CThe pressure of ordering with B point and A is identical.Wherein the A point is a barometric pressure also, is shown below.
Pac＝Pb＝Pa (1)
And have
PB＝hρ+P
(2)
ρ is a density of liquid in the same form
Also be Pac=PaA=PB=h ρ+P (3)
By (3) formula as seen, P is less than A, B, the atmospheric negative pressure in C plane.
When using liquid with liquid device, the liquid level at C point place will descend, and at this moment the pressure of each point is incited somebody to action no longer balance P
B＞P
C, liquid will be arranged at P from π
B-P
CThe potential difference effect under flow among the β, then h can reduce, therefore, h ρ+P＜P
AA, under atmospheric effect, will there be air to enter into π by the A point, to improve P, make system reach balance again.Along with the needs of continuous liquid among the β, the process of above feed flow and air inlet will constantly repeat.Certainly, have only the gas supply capacity selected as A greater than from π in β during the ability of feed flow, this stabilized conditions can keep.E is the fluid air gate among Fig. 1.
In many cases, need to measure the change procedure of fluid volume among the β, this requirement can be by reading out on the scale that is provided with on the wall of the limit of π.When to need the bigger and need liquid process of liquid measure among the π be not very fast, the build of π will be bigger.The liquid measure of unit scale representative is just bigger among the π like this, and its error in reading can increase accordingly.
The constant-pressure liquid supply device of above introduction is together in series according to certain rules, has just constituted serially connected constant-pressure liquid supply device.Connection mode is as shown in Figure 1:
1
#Increased a fluid air gate E on the constant-pressure liquid supply device, 2
#Increased feed liquor induction opening F on the constant-pressure liquid supply device, the perforate of E highly is positioned at atmosphere pressure surface A, B, C plane.Perforate aspect ratio A, the B of F, the slightly high 3～5mm of C atmosphere pressure surface.1
#The water outlet mounted valve G of constant-pressure liquid supply device, during operated in series connection, G closes.I is for to use the liquid mouth, 2
#The admission port mounted valve H of constant-pressure liquid supply device, during operated in series connection, H also closes, and J is a connection pipe.
The working process of polyphone constant-pressure liquid supply device is as follows:
When 1
#With 2
#After filling stand-by liquid in the container of device,, when induction opening D has bubble to begin to enter container, illustrate that liquid-supplying system has reached pressure balance, can normally use by outwards suitably emitting stand-by liquid with liquid mouth I.
During work, along with needing 1 with liquid with the liquid unit
#Liquid in the container will be through 2
#Supply for receptacles liquid unit, 1
#Liquid level in the container begins to descend, and replenishes air by D and gives 1
#Sealed cavity in the container, its process is identical with said process.
When 1
#When the liquid level in the container drops to A, B, C air pressure face, air will enter into 2 by E
#In the container, at this moment 2
#Liquid level in the container begins to descend, and later working process is identical with said process.
Claims (1)
1, a kind of constant-pressure liquid supply device by liquid storage container and induction opening, form with liquid mouth and connection pipe, is characterized in that this constant-pressure liquid supply device comprises having two polyphone bonded assembly first liquid storage containers (1 at least
#) and second liquid storage container (2
#), its first liquid storage container (1
#) bottom left connect an induction opening (D), the right side, bottom is connected with valve (G) and fluid air gate (E) in turn, fluid air gate (E) is by the connection pipe (J) and second liquid storage container (2
#) the feed liquor induction opening (F) of bottom left connects, feed liquor induction opening (F) again with second liquid storage container (2
#) the admission port valve (H) of bottom connects, at second liquid storage container (2
#) right bottom side be connected with liquid mouth (I) first liquid storage container (1
#) and second liquid storage container (2
#) the top be connected with drain tap (K), first liquid storage container (1
#) and second liquid storage container (2
#) the top time be leak free in work, the atmosphere pressure surface at the atmosphere pressure surface at induction opening (D) perforate height place and fluid air gate (E) perforate height place is in same plane, and the atmosphere pressure surface at feed liquor induction opening (F) perforate height place is than the high 3-5 millimeter of atmosphere pressure surface at induction opening (D) and fluid air gate (E) perforate height place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02139542 CN1209277C (en) | 2002-11-22 | 2002-11-22 | Constant-pressure liquid feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02139542 CN1209277C (en) | 2002-11-22 | 2002-11-22 | Constant-pressure liquid feeding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1413904A CN1413904A (en) | 2003-04-30 |
| CN1209277C true CN1209277C (en) | 2005-07-06 |
Family
ID=4750132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02139542 Expired - Fee Related CN1209277C (en) | 2002-11-22 | 2002-11-22 | Constant-pressure liquid feeding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1209277C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100405238C (en) * | 2005-12-06 | 2008-07-23 | 财团法人工业技术研究院 | Micro-domain fluid covering-ratio control device |
| CN101419470B (en) * | 2007-10-25 | 2010-11-17 | 殷育东 | Self-adjusting liquid level control device |
-
2002
- 2002-11-22 CN CN 02139542 patent/CN1209277C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1413904A (en) | 2003-04-30 |
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| SE01 | Entry into force of request for substantive examination | ||
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Granted publication date: 20050706 Termination date: 20091222 |