CN102644319A - Waste water hoisting facility - Google Patents
Waste water hoisting facility Download PDFInfo
- Publication number
- CN102644319A CN102644319A CN201210037434XA CN201210037434A CN102644319A CN 102644319 A CN102644319 A CN 102644319A CN 201210037434X A CN201210037434X A CN 201210037434XA CN 201210037434 A CN201210037434 A CN 201210037434A CN 102644319 A CN102644319 A CN 102644319A
- Authority
- CN
- China
- Prior art keywords
- pipe
- container
- waste water
- liquid level
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
- F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
- F04D15/0218—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid the condition being a liquid level or a lack of liquid supply
Abstract
The invention relates to a waste water hoisting facility comprising a container (2), a liquid level sensor (10) arranged in the container, and pressure sensor, wherein the liquid level sensor (10) has a tube (22) that extends vertically in the container (2); the upper end part (26) of the tube is closed; the lower part end is opened; the pressure sensor is arranged in the inner side of the tube (22) or is connected with the inner side of the tube.
Description
Technical field
The present invention relates to a kind of waste water lifting appliance, it has container and is arranged on the liquid level sensor in this container.
Background technology
This waste water lifting appliance is used for the waste water that is lower than the blow-off line height level is risen to the height level of blow-off line.This waste water lifting appliance has container, and waste water to be extracted flows in the container, and in that at least one pump is set on the container or in container, in order to waste water is drawn into higher height level from container.Liquid level sensor is set for this reason, in order to when in container, reaching specific liquid level, connecting pump, and closes pump when in container, reaching predetermined low liquid level.In addition, the known waste water lifting appliance that has a plurality of pumps in addition, wherein, the quantity of pump to be connected depends on the liquid level in the container, thereby also need use liquid level sensor for this reason.
Owing to wait to carry or waste water to be hoisted possibly contain various dirts, thus liquid level sensor must be configured to durable as far as possible so as can be lastingly, zero defect ground moves.
Summary of the invention
The objective of the invention is to propose a kind of such waste water lifting appliance, it has can be lastingly, the liquid level sensor of reliable running.
The object of the invention is through being achieved according to waste water lifting appliance of the present invention; It has container and is arranged on the liquid level sensor in this container, and wherein, liquid level sensor has vertically extending pipe in container; The upper end of this pipe constitutes sealing, and the bottom is open; And have and be arranged on the pressure sensor that this pipe is inner or be connected with the inside of this pipe.
Waste water lifting appliance as known is the same, and waste water lifting appliance according to the present invention also has container, waits to carry or waste water to be hoisted accumulates in this container.For this reason, this container has at least one waste water input port, and drainage pipe can be connected on this input port.In addition, this container is configured to, perhaps at least one pump can be set in this container, perhaps can such pump be arranged on the outside of container, and be connected with the inside of this container through intake duct.The outlet side of pump is connected with pressure pipeline or output channel, and waste water is drawn on the higher height level through pressure pipeline or output channel.
Set inside at container has at least one liquid level sensor, is used to detect the liquid level of internal tank.According to detected liquid level, can connect and close at least one pump.The appropriate control device is set for this reason, and this control device is connected with liquid level sensor like this: this control device is gathered the output signal of liquid level sensor and is handled.In addition, this control device is connected with at least one pump and is designed to, and makes this control device can connect and close this pump at least.In addition, this control device can also be designed for the rotating speed control of pump.
According to the present invention, liquid level sensor is designed to the pipe in the internal tank vertical stretching.At this, constitute this pipe like this and it is arranged on internal tank: this pipe is immersed in liquid or the waste water when the liquid level specific above internal tank at least.This manages cage structure in the top for sealing, and is configured to open in its bottom.Can this Guan Zaiqi bottom be configured to for this reason that standard-sized sheet puts, but also can have one or more openings that are arranged on end face or the side face in the bottom.To manage at this and to be arranged in the container like this: make the bottom begin just to be immersed in the liquid from reaching specific liquid level at least, thereby make liquid from following entering pipe and rise.According to the present invention, pressure sensor is set, be used to detect the internal pressure of internal tank.Lay pressure sensor like this at this: make it can detect the pressure of the air above the inside of pipe is positioned at liquid.Can pressure sensor be arranged on the inside of pipe for this reason, perhaps be arranged on the outside of pipe and link to each other with the inside of pipe through interface channel, thus make its can detect the liquid that in pipe, rises above the internal pressure of pipe.
When liquid when internal tank rises, it can get into the bottom of pipe.Seal owing to manage above that the end, therefore the volume of air in the pipe is no longer leaked and when liquid further rises, is compressed, thereby makes the pressure rising of this volume of air.This pressure changes and can detect through pressure sensor.At this, fluid level or the proportional signal of liquid level in this pressure formation and the container, this signal can be handled through control device, so that connect and close pump according to this signal.Advantage according to this embodiment of the present invention is, the sensor of the reality of liquid level sensor, and just in the case pressure sensor does not contact with liquid to be carried fully.Make the dirt (for example they can appear in the waste water) in the liquid can not damage the function of sensor thus.In addition, liquid level sensor does not have movably parts, thereby has further improved operating reliability, because this can get rid of obstruction or adhesion to movable part especially.
Preferably pressure sensor is arranged in the zone of upper end of pipe, it is linked to each other with the inside of managing in the zone of the upper end of pipe.Can pressure sensor be arranged in the liquid in the normal course of operation of waste water lifting appliance of pipe or the zone that waste water can not get into through this set, pressure sensor is connected with such zone of pipe.Can protect pressure sensor not contact in this way with liquid or waste water to be carried.The passage to external seal can be inserted in upper end at pipe, and this passage links to each other with pressure sensor or its pressure reception area.In addition; Can be provided for the socket of pressure sensor in the upper end of pipe; Can pressure sensor be installed in this socket, the pressure reception area of pressure sensor is linked to each other with the inside of pipe, but the upper end of managing simultaneously is to external seal; Just with respect to the surrounding environment sealing of pipe, thereby the inner volume of air of pipe is compressed when the inner liquid of pipe rises and is under the pressure.
According to of the present invention preferred embodiment a kind of, be differential pressure pickup with pressure sensor design, its first pressure receiving plane links to each other with the inside of pipe in container, and its second pressure receiving plane links to each other with the surrounding environment of pipe in container.Use the advantage of this differential pressure pickup to be, pressure sensor only responds to the caused pressure that rises of the liquid by internal tank, and to the not reaction of absolute pressure of internal tank.For example, when air chimney or outlet valve generation obstruction, also can cause rising the measurement result that this can lead to errors when using simple pressure sensor in the internal tank absolute pressure.Like this, liquid level sensor for example with regard to possible errors provide the signal of the rising of liquid level in the container, and in fact this do not take place, thereby pump might be connected by error.To guarantee through using differential pressure pickup; Pressure signal to detected internal tank is revised with respect to the absolute pressure of internal tank (promptly pipe is outside); Rise thereby in fact only can detect the pressure that rises based on liquid, and therefore can come zero defect ground to detect the liquid level of internal tank through the internal pressure in managing.
According to another preferred embodiment, pipe is radially surrounded by the tubulose protection sleeve on periphery separatedly, and the upper end of this protection sleeve and bottom all are configured to open, and its bottom vertically is positioned at below the bottom of pipe.This protection sleeve is constructed to tubulose equally, and has open upper surface and lower surface.At this can be wide-open with these edge face structures, perhaps is provided with opening.Alternatively or additionally also can corresponding opening be set in the peripheral region near upper end and/or bottom on the wall of protection sleeve.
The bottom of protection sleeve importantly, the vertical top edge that promptly is positioned at the opening on the protection sleeve bottom is positioned at below the lowest water level.At this, the lowest water level in the container is meant lowest water level or the minimum liquid level that when the waste water lifting appliance normally moves, appears at internal tank.This set will guarantee that protection sleeve always is immersed in the liquid or water of internal tank.Can realize thus, swim in the dirt of internal tank liquid surface, for example grease, foam and oil can not get into protection sleeve inside, but rest on outside the protection sleeve.If further raise, can also stop these dirts to get in the inner pipe of protection sleeve in this way in liquid in containers.Such dirt possibly accumulate in the pipe and cause the function of liquid level sensor impaired.Can stop the generation of this situation reliably through protection sleeve.
Preferably will managing like this, design perhaps is arranged in the container: when internal tank had lowest water level, the opening on the bottom of pipe or the bottom of pipe was positioned at the top of the liquid surface or the water surface.Therefore in this state, utilize the pressure sensor that is arranged in pipe to detect container internal pressure, and send the signal of lowest water level in this way, for example should close pump in this case.Alternatively it is also conceivable that pipe is configured to, the opening on the bottom of pipe is in below the lowest water level in the container all the time, promptly be in below the lowest water level that is occurred when the waste water lifting appliance normally moves.In this embodiment, pipe itself stops the dirt that swims on the liquid surface to get into the inside of pipe, that is to say that pipe has and the similar function of aforesaid protection sleeve.But when being in minimum liquid level or water level, the ventilation of pipe interior will no longer take place, and therefore when the air leakage took place owing to blow-by, the stress level of internal tank can change, and possibility so The Long-term Effect certainty of measurement.
Further preferably pressure sensor is arranged at the top of container at internal tank.Through this set, make pressure sensor approaching easily on the one hand, because be installed to pressure sensor the container more easily and taking-up from container again from the top of container.This for example needs for maintenance and repair.In addition, when normal operation, the water of internal tank can not be increased to the top of container, therefore pressure sensor is arranged on such position: it is not contacted with the water of internal tank when normal operation, and therefore protect it not polluted.
Further preferred at least one pressure receiving plane towards internal tank with pressure sensor places satchel body (Tasche), and this satchel body is open at it on the bottom of internal tank only.Preferably this satchel body also is arranged on the top of container.At this do with this satchel body structure; To be increased to the situation of the bottom of this satchel body for the water of internal tank; In this satchel body, can surround a volume of air; This volume of air can not leaked from the satchel body when water level further raises, because the satchel body is open towards the bottom only.To guarantee through this design scheme; Even will be increased at water under the reception condition (Aufnahmefall) at the top of container; Water can not contact with the pressure receiving plane of pressure sensor itself yet; But in the satchel body, between the pressure receiving plane of water and pressure sensor, having an air cushion all the time, this air-cushion protection pressure sensor does not receive the pollution of waste water.
A kind of preferred embodiment in, liquid level sensor constitutes an element of construction in the opening that is installed in container with pipe and pressure sensor.This can simplify the installation to liquid level sensor; And simplify replacing where necessary to liquid level sensor; Because can be, and when safeguarding and change, it be taken out from vessel port once more in the whole opening that is installed in container as pre-assembled element of construction of liquid level sensor.For this reason, preferably liquid level sensor releasably is connected with chamber wall.In addition; Preferably between the chamber wall in liquid level sensor and the open area, seal is set at container; The sealing part makes container to external seal after liquid level sensor has been installed; Thereby during the maximum level when the water in the container raises above normal operation, can prevent that sealing flows out from container.The opening that preferably will be used to receive liquid level sensor is arranged on the top of container.To realize through corresponding sealing: even if when water will be full of container fully, water can outwards not flow out from the opening that is used for liquid level sensor yet.
The opening that preferably makes container by screw thread institute around, and liquid level sensor has corresponding screw thread, and liquid level sensor is tightened on the screw thread of container through this corresponding screw thread.Can whole liquid level sensor be tightened with chamber wall in opening thus.Container is preferably processed by synthetic materials, and it preferably has outwardly directed cylindrical rim in the open area, on the outside of wheel rim or inboard, screw thread is set.Liquid level sensor is screwed in this screw thread with the corresponding screw thread in the upper end region of liquid level sensor.Liquid level sensor end above that has sensor housing, in this sensor housing, pressure sensor is set, and described pipe is extended from sensor housing vertically downward.Like this, corresponding screw thread can correspondingly be set, to be screwed into the screw thread that is arranged on the chamber wall on this sensor housing.Preferably in the zone of said screw thread, also be provided for the socket of said seal.Substitute or additionally, can seal be fixedly connected with liquid level sensor or chamber wall, for example be directly injection-moulded on the seal.
Description of drawings
With reference to the accompanying drawings the present invention is carried out exemplary illustration, wherein:
Fig. 1 shows the overview according to waste water lifting appliance of the present invention,
Fig. 2 shows the sectional view of the liquid level sensor of this waste water lifting appliance,
That Fig. 3 shows is as shown in Figure 2, wherein be provided with the zoomed-in view of upper end of the liquid level sensor of pressure sensor.
Wherein, description of reference numerals is following:
2 containers
4 input ports
6 are used for the socket of pump
8 pressure sleeves (Druckstutzen)
9 tops
10 liquid level sensors
12 sensor housings
14 wheel rims
16 internal threads
18 sleeve pipes (Stutzen)
20 joint rings
22 pipes
24 bottoms
26 upper ends
28 sockets
30 differential pressure pickups
32,34 pressure reception areas
36,38 passages
40 inner spaces
42 protection sleeves
44 bottoms
46 upper ends
48 bolts
49 bayonet socket connectors
50 minimum liquid levels
52 second, higher liquid level
54 air
56 bottoms
The X vertical direction.
The specific embodiment
Waste water lifting appliance as shown in the figure has container 2, and it has at least one input port 4, and liquid or waste water flow into the inside of container 2 through this input port.In addition, container 2 also has the socket 6 that is used for pump (not shown at this), and pump is transported to the waste water of internal tank in the pressure pipeline or output channel that is connected through pressure sleeve 8.Liquid level sensor 10 is installed in the container 2 through opening from the top 9 of container.To be elaborated to the structure of this liquid level sensor 10 according to Fig. 2 and Fig. 3 below.
The second pressure reception area 34 links to each other through the inner space 40 of passage 38 with the container 2 that centers on pipe 22.
Managing 22 spaced radials turns up the soil and is centered on by 42 of protection sleeves.Protection sleeve 42 is configured to tubulose equally, and vertically X stretches.At this, the bottom 44 and the upper end 46 of protection sleeve is constructed to open respectively, that is, open towards the inner space 40 of container 2.Protection sleeve 42 is fixed on the pipe 22 through bolt 48.In addition, this protection sleeve is connected with the bottom 12a of sensor housing 12 through bayonet socket connector 49 end above that.
The bottom 44 of protection sleeve 42 vertically is positioned at the bottom of pipe 22 below 24.At this, establishing protective sleeve 42 and it is arranged in the container 2 like this, the minimum liquid level that bottom 44 is located at appear at when the waste water lifting appliance normally moves in the container 2 is below 50.To guarantee thus: the bottom of protection sleeve 42 always is immersed in the waste water.Can prevent in this way to get in the containers 2 and swim in the inside that dirt (for example oil, fat and foam) on the waste water gets into protection sleeve 42 through input port 4.Make these dirts stay the outside of protection sleeve 42 thus.Because pipe 22 is set at the inside of protection sleeve 42, therefore, will stop this type dirt to get in the pipe 22 in this way.
The size of definite like this pipe 22 and its are set to: its open bottom 24 is positioned on this minimum liquid level when lowest water level or minimum liquid level 50, thereby pipe 22 is ventilated through inside and its 40 open upper ends 46, inner space with respect to container 2 of protection sleeve 42.
If there is more waste water to flow in the container 2 now, the liquid level in the container rises, and for example is increased to second, higher liquid level 52.On the second higher liquid level 52, the bottom 24 of pipe 22 is immersed in the waste water.Also make waste water be positioned at air 54 wherein in this way in the rising of the inside of pipe 22 and towards 26 compressions of the upper end of pipe 22.This will cause rising at the pressure of the air 54 of pipe 22 inside.This pressure rises and pipe 22 inner liquid levels rise proportional.This pressure rises and detects through pressure sensor 30.At this, the interior pressure of the air 54 in pressure reception area 32 detector tubes 22, the meanwhile interior pressure in the inside 40 of the second pressure reception area, 34 detection containers 2.In this way, utilize differential pressure pickup 30 only to detect the pressure differential that rises and to cause by liquid level, thereby the rising that makes the absolute pressure in the inside 40 of container 2 is to not influence of measurement result in pipe 22 inside.Therefore differential pressure pickup 30 provide with container 2 in the proportional output signal of height level of waste water, this output signal is handled by control device (not shown at this), with connection with close pump.
Because in case liquid level surpasses the bottom 24 of pipe 22; Differential pressure pickup 30 just will detect the pressure signal that continues rising; Therefore the also rising of sensed water level or liquid level continuously; And can in control device, set different switching threshold arbitrarily, for example, can also change switching threshold in case of necessity in order to connect more pump.Thus, here can realize being easy to adjustment, and this is for example utilizing mechanical liquid-level switch to realize.
Because air 54 can not be overflowed from managing 22 inside, therefore is exactly when liquid level continues to be increased to the top of container 2, this volume of air 54 also can stop liquid or waste water admission passage 36 and come in contact with the pressure reception area 32 of pressure sensor 30.Can in this zone, protect pressure sensor not contact waste water reliably in this way.Can also prevent in this way the pollution of passage 36 or possible obstruction.
This shows also can not have movably parts, just improved reliability of operation thus at the liquid level sensor shown in this 10.On the other hand, for the important ingredient of actual measurement, promptly particularly differential pressure pickup 30 is set to, and they can not be contacted with the liquid of internal tank with all of sensor.To protect the actual not pollution of liquid body of measuring cell in this way reliably.
Claims (9)
1. waste water lifting appliance; Have container (2) and be arranged on the liquid level sensor (10) in this container; It is characterized in that; Said liquid level sensor (10) has: vertically extending pipe (22) in said container (2), the upper end of this pipe (26) constitute sealing, and the bottom of this pipe (24) are open; And has a pressure sensor (30) that is arranged in the said pipe (22) or is connected with the inside of said pipe (22).
2. waste water lifting appliance as claimed in claim 1; It is characterized in that; Said pressure sensor (30) is arranged in the zone (26) of upper end of said pipe (22), perhaps in the zone (26) of the upper end of said pipe (22), links to each other with the inside (26) of said pipe (22).
3. according to claim 1 or claim 2 waste water lifting appliance; It is characterized in that; Said pressure sensor is differential pressure pickup (30); Inside (40) in said container (2), the first pressure receiving plane (32) of this differential pressure pickup links to each other with the inside of said pipe (22), and the second pressure receiving plane (34) of this differential pressure pickup links to each other with the surrounding environment of said pipe (22).
4. like the described waste water lifting appliance of each claim of front; It is characterized in that; Said pipe (22) is radially centered on by tubulose protection sleeve (42) on periphery separatedly; The upper end of this protection sleeve (46) and bottom (44) constitute open, and its bottom (44) vertically are positioned at the below of the bottom (24) of said pipe (22).
5. waste water lifting appliance as claimed in claim 4 is characterized in that, vertically is arranged in the bottom (44) of said protection sleeve (42) below the lowest water level (50) of said container (2).
6. like the described waste water lifting appliance of each claim of front, it is characterized in that, said pressure sensor (30) in said container (2) set inside on the top (9) of said container.
7. like the described waste water lifting appliance of each claim of front; It is characterized in that; At least one of said pressure sensor (30) places the satchel body towards the pressure receiving plane (34) of said container (2) inner (40), and this satchel body is open on the bottom (56) of its inside towards said container (2) (40) only.
8. like the described waste water lifting appliance of each claim of front, it is characterized in that said liquid level sensor (10) constitutes an element of construction in the opening that is installed in said container (2) with said pipe (22) and said pressure sensor (30).
9. waste water lifting appliance as claimed in claim 8; It is characterized in that; Said opening by threaded collar around, and said liquid level sensor (10) has corresponding screw thread (16), said liquid level sensor is tightened on the screw thread of said container (2) by this corresponding screw thread (16).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP11001251A EP2489798A1 (en) | 2011-02-16 | 2011-02-16 | Waste water hoisting facility |
| EP11001251.5 | 2011-02-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102644319A true CN102644319A (en) | 2012-08-22 |
Family
ID=44233193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210037434XA Pending CN102644319A (en) | 2011-02-16 | 2012-02-16 | Waste water hoisting facility |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP2489798A1 (en) |
| CN (1) | CN102644319A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4919343A (en) * | 1989-09-25 | 1990-04-24 | Environment/One Corporation | Anti-flooding sewage grinder pump liquid level control system in separately mounted canister |
| CN1491345A (en) * | 2001-02-07 | 2004-04-21 | 4泰克公司 | Level gauge for measuring amount of liquid in tank |
| EP1559841A2 (en) * | 2004-01-29 | 2005-08-03 | Jung Pumpen GmbH | Sewage collection well |
| CN2787884Y (en) * | 2005-01-11 | 2006-06-14 | 格兰富水泵(上海)有限公司 | Pressure sensor for submersible pump |
| EP1961963A2 (en) * | 2007-02-20 | 2008-08-27 | KSB Aktiengesellschaft | Level-dependent pump control |
| FR2940336A1 (en) * | 2008-12-18 | 2010-06-25 | Victor Jean Ballestra | Wastewater evacuating installation for use in lavatory, has pressure switch controlled by pressure reigning in plunger tube that is placed in tank, and another pressure switch controlled by pressure reigning in outlet piping of drain pump |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3110735C2 (en) * | 1981-03-16 | 1984-03-22 | Hubert 1000 Berlin Combé | Dry run protection device for a sewage pump |
| US6076399A (en) * | 1997-10-30 | 2000-06-20 | Crane Pumps & Systems, Inc. | Level switch filter for sewer basin |
-
2011
- 2011-02-16 EP EP11001251A patent/EP2489798A1/en not_active Withdrawn
-
2012
- 2012-02-16 CN CN201210037434XA patent/CN102644319A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4919343A (en) * | 1989-09-25 | 1990-04-24 | Environment/One Corporation | Anti-flooding sewage grinder pump liquid level control system in separately mounted canister |
| CN1491345A (en) * | 2001-02-07 | 2004-04-21 | 4泰克公司 | Level gauge for measuring amount of liquid in tank |
| EP1559841A2 (en) * | 2004-01-29 | 2005-08-03 | Jung Pumpen GmbH | Sewage collection well |
| CN2787884Y (en) * | 2005-01-11 | 2006-06-14 | 格兰富水泵(上海)有限公司 | Pressure sensor for submersible pump |
| EP1961963A2 (en) * | 2007-02-20 | 2008-08-27 | KSB Aktiengesellschaft | Level-dependent pump control |
| FR2940336A1 (en) * | 2008-12-18 | 2010-06-25 | Victor Jean Ballestra | Wastewater evacuating installation for use in lavatory, has pressure switch controlled by pressure reigning in plunger tube that is placed in tank, and another pressure switch controlled by pressure reigning in outlet piping of drain pump |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2489798A1 (en) | 2012-08-22 |
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Application publication date: 20120822 |