CN100412516C - Differential pressure type liquid level detector - Google Patents
Differential pressure type liquid level detector Download PDFInfo
- Publication number
- CN100412516C CN100412516C CNB2006100685682A CN200610068568A CN100412516C CN 100412516 C CN100412516 C CN 100412516C CN B2006100685682 A CNB2006100685682 A CN B2006100685682A CN 200610068568 A CN200610068568 A CN 200610068568A CN 100412516 C CN100412516 C CN 100412516C
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- diaphragm
- liquid
- differential pressure
- liquid level
- pressure type
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Abstract
The invention discloses a pressure differential liquid level detecting device including the canister with the up-down closed covers, the liquid input set in the down closed cover, the extraction opening set in the up closed cover. The diaphragm seat, the flinger clapboard and the splash clapboard are set in the inside of the canister. The diaphragm seat is installed with the diaphragm by the press plate; the center of the diaphragm is installed with the liquid signal leader which spreads to the upper of the canister through the flinger clapboard and the splash clapboard, the signal switch corresponding to the liquid signal leader is installed in the upper closed cover; the air hole is set in the flinger clapboard and the splash clapboard, the liquid hole corresponding to the diaphragm is set in the seat soleplate and the diaphragm seat and the pressing plate are set with the galvanometer hole; the spring is suited in the liquid signal leader and compress spring is set between the up closed cover underside and the splash clapboard. So it detects the liquid level quickly and accurately.
Description
Technical field
The present invention relates to a kind of liquid level detection device, especially a kind of differential pressure type liquid level detector that is used for liquid coating.
Background technology
A large amount of productions and use along with domestic steel radiator, for improving the tenure of use of heating radiator, most of heating radiator has all generally adopted the production technology of inner application water-repellent paint, for the coating quality that improves the heating radiator coated inside with enhance productivity, interior anticorrosion vacuum application techniques is present best a kind of production technology, but in use, because of water-repellent paint is that opaque liquid and denseness are bigger, and different coating consistency change is bigger, after entering the heating radiator inside that forms vacuum when coating, because vacuum action, the liquid coating rapid expansion, density reduces, and adopts general liquid level sensor or liquid level detection device at present, is difficult to continuously fast, carry out Level Detection exactly, the float-type liquid level detection device that present heating radiator manufacturer generally adopts, its volume is big, the failure rate height, detection speed is slow, the application of anticorrosion vacuum application techniques in seriously having limited.
Summary of the invention
The technical problem to be solved in the present invention provides a kind ofly can carry out Level Detection continuously quickly and accurately, and the differential pressure type liquid level detector that failure rate is low is to improve the production efficiency and the quality of anticorrosion vacuum application in the heating radiator.
For solving the problems of the technologies described above, the present invention includes and have the cylindrical shell of closing cap up and down, its design feature is to cover in following sealing to be provided with inlet, last closing cap is provided with bleeding point, the alternate from bottom to top diaphragm seat that is provided with in cylinder lumen, retaining liquid dividing plate and swash partition, by the diaphragm pressing plate diaphragm is installed on the diaphragm seat, the centre of diaphragm is equipped with the liquid signal guide rod, the liquid signal guide rod passes described retaining liquid dividing plate and swash partition stretches to cylinder lumen top, on last closing cap, be equipped with extend into cylinder lumen and with the corresponding signaling switch in liquid signal guide rod position; On retaining liquid dividing plate and swash partition, be provided with air hole, diaphragm seat base plate is provided with the fluid through-hole corresponding with diaphragm, the diaphragm seat of diaphragm periphery and diaphragm pressing plate are provided with the galvanometer hole of up/down perforation, and the liquid capacity that flows through galvanometer hole is less than the gas volume of discharging from bleeding point; Be set with retracing spring on the liquid signal guide rod of retaining liquid dividing plate below, be provided with holddown spring between last closing cap bottom surface and the swash partition end face.
Between following closing cap and diaphragm seat, the diaphragm pressing plate with keep off between the liquid dividing plate, keep off between liquid dividing plate and the swash partition and be respectively equipped with positioning spacer.
Below bleeding point, be provided with the bleeding point swash partition.
On last closing cap, be provided with the optoelectronic switch that extend in the cylinder lumen.
Described galvanometer hole is two that radial symmetry is provided with.
The total cross-sectional area of described galvanometer hole is less than the area of section of bleeding point.
Air hole on the described retaining liquid dividing plate is two that radial symmetry is provided with.
On diaphragm seat base plate, be provided with the diaphragm caging bolt corresponding, on this diaphragm caging bolt the inlet baffle plate be installed with liquid signal guide rod bottom position.
Principle of work of the present invention is as follows: a port of steel radiator is connected with the inlet of differential pressure type liquid level detector, the another port is communicated with coating pond, uses tracheae to be connected with vacuum generator, gas tank respectively through solenoid valve the bleeding point of differential pressure type liquid level detector; Starting vacuum generator finds time to heating radiator by differential pressure type liquid level detector, liquid coating enters into heating radiator inside under suction function, and the air of heating radiator inside enters into differential pressure type liquid level detector by inlet, and discharge from bleeding point through galvanometer hole, air hole, this moment, the liquid signal guide rod is upwards action owing to the gravity of liquid signal guide rod self and the elastic force of retracing spring.After liquid coating is filled with lumen of radiator, when liquid coating enters into differential pressure type liquid level detector inside and flows through galvanometer hole by inlet, because the density of liquid coating is greater than the density of gas, so the resistance augmented flow reduces, the liquid capacity that flows through galvanometer hole this moment is significantly smaller than the gas volume of discharging from bleeding point, so form a pressure reduction in two ends up and down at diaphragm, pressure above the diaphragm is less than the pressure below the diaphragm, under the effect of this pressure reduction, diaphragm drives the liquid signal guide rod and moves up, when the operating distance of liquid signal guide rod top entering signal switch, the signaling switch action, the output liquid signal that puts in place, close the vacuum generator solenoid valve by control system, open the gas tank solenoid valve, then pressurized air is in bleeding point enters into differential pressure type liquid level detector, fast the liquid coating that reaches in the cylindrical shell in the heating radiator is discharged under pressure, perform the preparation of Level Detection next time.
From the above mentioned, the present invention can carry out Level Detection continuously quickly and accurately, and its failure rate is low, this device volume is 1/6 of a float-type liquid level detection device, signal reaction speed is 50 times of float-type liquid level detection device, can increase substantially the production efficiency and the quality of anticorrosion vacuum application in the heating radiator.
Be provided with positioning spacer, its assembling, more convenient when changing parts; Below bleeding point, be provided with the bleeding point swash partition, prevent that liquid coating from stopping up bleeding point; Be provided with the optoelectronic switch that extend in the cylinder lumen on last closing cap, when the diaphragm long-term work damaged the back cisco unity malfunction, after liquid coating flow through the diaphragm breakage position and rises to the optoelectronic switch operating distance, optoelectronic switch sent alerting signal; Air hole on galvanometer hole and the retaining liquid dividing plate is two that radial symmetry is provided with, and guarantees that diaphragm lift is even, avoids the liquid signal guide rod to produce misoperation; And the total cross-sectional area of galvanometer hole is less than the area of section of bleeding point, and diaphragm lift is very little in to the heating radiator pumping process, and this lift does not overcome the gravity of liquid signal guide rod self and the elastic force of retracing spring, and the liquid signal guide rod is upwards action; On diaphragm seat base plate, be provided with the diaphragm caging bolt corresponding, confined liquid signal guide rod operating distance, the serviceable life of prolongation diaphragm with liquid signal guide rod bottom position.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail:
Fig. 1 is the preceding vertical section structure synoptic diagram of diaphragm action of the present invention;
The vertical section structure synoptic diagram of Fig. 2 after for diaphragm of the present invention action;
Fig. 3 is a user mode synoptic diagram of the present invention.
Embodiment
With reference to accompanying drawing, this differential pressure type liquid level detector comprises and has the up and down cylindrical shell 8 of closing cap, is being provided with inlet on the closing cap 2 down, and inlet silk 1 is installed on the inlet.Last closing cap 15 is provided with bleeding point H, and lock-on connection 14 is installed on the bleeding point H, is provided with bleeding point swash partition 16 below bleeding point H, and swash partition 16 is supported on the closing cap 15 by bolt 17.Alternate from bottom to top diaphragm seat 4, retaining liquid dividing plate 7 and the swash partition 19 of being provided with in cylindrical shell 8 inner chambers, between closing cap 2 down and diaphragm seat 4, diaphragm pressing plate 6 with keep off between the liquid dividing plate 7, keep off between liquid dividing plate 7 and the swash partition 19 and be respectively equipped with positioning spacer 3.Retaining liquid dividing plate 7 and swash partition 19 are provided with center pit, are provided with O-ring seal 5 between closing cap 2 and the cylindrical shell 8 under last closing cap 15, diaphragm seat 4 reach.By diaphragm pressing plate 6 diaphragm 22 is installed on the diaphragm seat 4, diaphragm 22 adopts Reinforced Rubber Material to make, the centre of diaphragm 22 is equipped with the liquid signal guide rod 20 that moves up and down with diaphragm 22, liquid signal guide rod 20 is fixing by its base and bolt, packing ring 23 and diaphragm 22, and the center pit that liquid signal guide rod 20 passes described retaining liquid dividing plate 7 and swash partition 19 stretches to cylindrical shell 8 inner chamber tops.Be equipped with on last closing cap 15 and extend into cylindrical shell 8 inner chambers and the signaling switch 13 corresponding with liquid signal guide rod 20 positions, signaling switch 13 is fixed on the closing cap 15 by mount pad 11 and O-ring seal 10, and this signaling switch 13 is one near switch.On retaining liquid dividing plate 7, be provided with air hole (C, D), air hole is two that radial symmetry is provided with, swash partition 19 is provided with air hole E, diaphragm seat 4 base plates are provided with the fluid through-hole (F, G) corresponding with diaphragm 22, the diaphragm seat 4 of diaphragm 22 peripheries and diaphragm pressing plate 6 are provided with the galvanometer hole (A, B) of up/down perforation, galvanometer hole is two that radial symmetry is provided with, and the total cross-sectional area of galvanometer hole (A, B) is less than the area of section of bleeding point H; Be set with retracing spring 21 on the liquid signal guide rod 20 of retaining liquid dividing plate 7 belows, increase the screen resilience of liquid signal guide rod 20, be provided with holddown spring 18 between last closing cap 15 bottom surfaces and swash partition 19 end faces.Last closing cap 15 is provided with the optoelectronic switch 12 that extend in cylindrical shell 8 inner chambers, this optoelectronic switch 12 is an alarm switch, it is fixed on the closing cap 15 by mount pad 11 and O-ring seal 10, when the diaphragm long-term work damages the back cisco unity malfunction, after liquid coating flow through the diaphragm breakage position and rises to the optoelectronic switch operating distance, optoelectronic switch sent alerting signal.Diaphragm seat 4 base plates are provided with the diaphragm caging bolt 25 corresponding with liquid signal guide rod 20 bottom positions, in order to adjust the distance that liquid signal guide rod 20 moves up and down, on this diaphragm caging bolt 25 inlet baffle plate 24 is installed, last closing cap 15, down closing cap 2 is pressed on cylindrical shell by set bolt 9, nut 26 about in the of 8 two ends.
Figure 3 shows that user mode figure of the present invention, inlet silk on the inlet of one port of steel radiator and differential pressure type liquid level detector 1 is connected, the another port is communicated with coating pond, lock-on connection on the bleeding point H of differential pressure type liquid level detector 14 usefulness tracheaes are connected with vacuum generator, gas tank respectively through solenoid valve (M, N), and the optoelectronic switch 12, the signaling switch 13 that are installed on the closing cap 15 are connected to control system, unify control electromagnetic valve (M, N) by control system.
Claims (8)
1. differential pressure type liquid level detector, comprise and have the cylindrical shell (8) of closing cap up and down, it is characterized in that being provided with inlet on the closing cap (2) down, last closing cap (15) is provided with bleeding point, the alternate from bottom to top diaphragm seat (4) that is provided with in cylindrical shell (8) inner chamber, retaining liquid dividing plate (7) and swash partition (19), diaphragm seat (4) is gone up and by diaphragm pressing plate (6) diaphragm (22) is installed, the centre of diaphragm (22) is equipped with liquid signal guide rod (20), liquid signal guide rod (20) passes described retaining liquid dividing plate (7) and swash partition (19) stretches to cylindrical shell (8) inner chamber top, is equipped with to extend into cylindrical shell (8) inner chamber and the signaling switch (13) corresponding with liquid signal guide rod (20) position on last closing cap (15); On retaining liquid dividing plate (7) and swash partition (19), be provided with air hole, diaphragm seat (4) base plate is provided with and the corresponding fluid through-hole of diaphragm (22), the galvanometer hole that the diaphragm seat (4) of diaphragm (22) periphery and diaphragm pressing plate (6) are provided with up/down perforation, the liquid capacity that flows through galvanometer hole is less than the gas volume of discharging from bleeding point; Be set with retracing spring (21) on the liquid signal guide rod (20) of retaining liquid dividing plate (7) below, be provided with holddown spring (18) between last closing cap (15) bottom surface and swash partition (19) end face.
2. differential pressure type liquid level detector according to claim 1, it is characterized in that between following closing cap (2) and diaphragm seat (4), diaphragm pressing plate (6) with keep off between the liquid dividing plate (7), keep off between liquid dividing plate (7) and the swash partition (19) and be respectively equipped with positioning spacer (3).
3. differential pressure type liquid level detector according to claim 1 is characterized in that being provided with bleeding point swash partition (16) below bleeding point.
4. differential pressure type liquid level detector according to claim 1 is characterized in that being provided with the optoelectronic switch (12) that extend in cylindrical shell (8) inner chamber on last closing cap (15).
5. differential pressure type liquid level detector according to claim 1 is characterized in that described galvanometer hole is two that radial symmetry is provided with.
6. differential pressure type liquid level detector according to claim 5 is characterized in that the area of section of the total cross-sectional area of described galvanometer hole less than bleeding point.
7. differential pressure type liquid level detector according to claim 1 is characterized in that the air hole on the described retaining liquid dividing plate (7) is two that radial symmetry is provided with.
8. differential pressure type liquid level detector according to claim 1, it is characterized in that on diaphragm seat (4) base plate, being provided with the diaphragm caging bolt (25) corresponding, on this diaphragm caging bolt (25) inlet baffle plate (24) is installed with liquid signal guide rod (20) bottom position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100685682A CN100412516C (en) | 2006-08-23 | 2006-08-23 | Differential pressure type liquid level detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100685682A CN100412516C (en) | 2006-08-23 | 2006-08-23 | Differential pressure type liquid level detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1932455A CN1932455A (en) | 2007-03-21 |
| CN100412516C true CN100412516C (en) | 2008-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100685682A Expired - Fee Related CN100412516C (en) | 2006-08-23 | 2006-08-23 | Differential pressure type liquid level detector |
Country Status (1)
| Country | Link |
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| CN (1) | CN100412516C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101221064B (en) | 2007-01-11 | 2010-09-29 | 深圳迈瑞生物医疗电子股份有限公司 | Low liquid level detecting device |
| US7882736B2 (en) * | 2007-11-12 | 2011-02-08 | Rosemount Inc. | Level measurement using a process vessel cage |
| CN102519544B (en) * | 2011-12-23 | 2014-01-15 | 合肥工业大学 | Water depth measuring sensor |
| CN103673303B (en) * | 2013-12-24 | 2016-02-17 | 李旭平 | Voltage-controlled from the electric water boiler that overflows |
| CN109764932B (en) * | 2016-01-15 | 2020-12-08 | 庞极洲 | Working method of built-in liquid level measuring device adopting differential pressure sensing device |
| CN108680228B (en) * | 2018-05-23 | 2020-03-10 | 张祝 | Liquid level measuring method for hydraulic engineering |
| CN108593044B (en) * | 2018-05-23 | 2020-03-10 | 张祝 | Liquid level measuring device for hydraulic engineering |
| CN111587791B (en) * | 2020-05-25 | 2022-04-19 | 青岛高烽电机有限公司 | Breed with breeding canopy |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105681A (en) * | 1986-07-23 | 1988-02-24 | 维加·格里沙伯公司 | Differential manometer |
| US5063778A (en) * | 1990-07-02 | 1991-11-12 | Jorritsma Johannes N | Apparatus for measuring the level of a liquid in a wetwell |
| WO2001095778A2 (en) * | 2000-06-10 | 2001-12-20 | Vorwerk & Co. Interholding Gmbh | Level indicator for indicating the filling level of a filter bag and method for operating a vacuum cleaner |
| CN1114819C (en) * | 1997-11-11 | 2003-07-16 | 金义教 | Liquid level detector |
| CN2773635Y (en) * | 2005-03-22 | 2006-04-19 | 沈阳东友仪表成套设备有限公司 | Level indicator for aluminium cell |
-
2006
- 2006-08-23 CN CNB2006100685682A patent/CN100412516C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105681A (en) * | 1986-07-23 | 1988-02-24 | 维加·格里沙伯公司 | Differential manometer |
| US5063778A (en) * | 1990-07-02 | 1991-11-12 | Jorritsma Johannes N | Apparatus for measuring the level of a liquid in a wetwell |
| CN1114819C (en) * | 1997-11-11 | 2003-07-16 | 金义教 | Liquid level detector |
| WO2001095778A2 (en) * | 2000-06-10 | 2001-12-20 | Vorwerk & Co. Interholding Gmbh | Level indicator for indicating the filling level of a filter bag and method for operating a vacuum cleaner |
| CN2773635Y (en) * | 2005-03-22 | 2006-04-19 | 沈阳东友仪表成套设备有限公司 | Level indicator for aluminium cell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1932455A (en) | 2007-03-21 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080820 Termination date: 20100823 |