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
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
  • F04F1/00—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
  • F04F1/06—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium acting on the surface of the liquid to be pumped
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T137/00—Fluid handling
  • Y10T137/8593—Systems
  • Y10T137/85978—With pump
  • Y10T137/86035—Combined with fluid receiver
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T137/00—Fluid handling
  • Y10T137/8593—Systems
  • Y10T137/86187—Plural tanks or compartments connected for serial flow
  • Y10T137/86196—Separable with valved-connecting passage

Definitions

• the invented object a waste water pumping device, dedicated mainly for faecal waste water pumping installations. Besides, it can be applied in other pumping systems and its solutions can be used for modernization of the already existing waste water tank pumping stations.
• the classical waste water tank pumping stations employing immersed sewage pumps fixed automatically on a coupling footings immersed in the waste water pumped by them.
• the pumping station tanks in the developed versions have most commonly beds in a form of cone or sphere, which improves to some extent the hygienic conditions in the pumping stations.
• they can be equipped with devices controlling the pump performance aiming at elimination of floating rubbish which in turn reduces the water level at the inlet of the immersed pump, and with automatic rinsing valves supporting the pump performance in terms of elimination bed sediments.
• the retention share of waste water is contained in the same tank as the immersed pump and the staff has a more direct reach to the waste water upon each entrance to such a tank.
• This tank is called a wet tank or a wet chamber. Nevertheless, the conditions of service and operation in such developed pumping stations have not improved noticeably, while their production costs have risen significantly.
• Pumping devices placed in dry tanks are more commonly known and used. These include both the waste water pumping devices employing impeller pumps and also air compressors. In comparison to tank pumping stations they provide virtual airtight sealing of the object and its operation can be performed in much cleaner environment In such pumping systems, the retention share of the waste water is contained in a separate retention tank located most frequently on the bed of the dry tank or next to the dry tank, so that the staff does not have the direct contact with the sewage water each time upon entering such a tank. This tank is also called a dry chamber.
• the hermetic impeller pumps with engine cooled by the passing liquid or immersed impeller pumps adjusted also to dry outdoor operation.
• Manual pumps or portable immersed pumps are used for the purpose of emptying the waste water overflowed from the retention tank during pump replacement or system inspection.
• a pumping waste water device located in the by a waste water pumping device placed in the dry tank in form of a manhole well in which the retention part is located in at least one tight retention tank, while the device itself is user-friendly and it does not generate any problems caused by sedimentation of solid particles on the bed or the waste water surface in the retention section, whereas its total cost is approximately equal or smaller than the total cost of improved tank pumping stations.
• the retention tank constitutes a distributing chamber which is connected to the external retention tank being a segment of a gravity-flow channel with its cross-section greater than the cross-section of gravity waste water transfer required in the calculations, located on the line of waste water inflow to the retention tank, whereas the capacity of the retention tank is at least two times smaller than the capacity of the external retention tank constituting a segment of the of the gravity-flow channel with its cross-section greater than the required cross-section of the gravity-flow channel for gravity waste water transfer required in the calculations.
• the capacity of the retention tank is to the best advantage three to fifteen times smaller than the capacity of the external retention tank.
• the operational capacity of the retention tank is to the best advantage four to twenty times smaller than the capacity of the external retention tank.
• the retention tank is made in a form of a rectangular prism with at least one suction channel conducted from its bottom section, constituting a uniform structure with the retention tank, to which the impeller pump inlet resting on the suction channel is connected.
• the retention tank is made in form of a rectangular prism with at least one suction channel conducted from its bottom section to which the inlet of the operating tank of the pneumatic positive-displacement pump is connected.
• the retention tank is made in a form of a vertically positioned cylinder with at least one suction channel conducted from its bottom section in a form of a base elbow to which the inlet of the impeller pump resting on this elbow is connected, and the whole structure is fixed to the frame,
• the retention tank is made in form of a vertically positioned cylinder with at least one suction channel conducted from its bottom section to which the inlet of the operating tank of the pneumatic positive-displacement pump is connected.
• the main venting pipe In order to provide proper air venting of the retention tank the from the gravity-flow pipe located inside the dry tank the main venting pipe is conducted and connected to the retention tank in its upper section with its lateral venting conduit.
• the retention tank For comfortable performance of retention tank inspection and dismantling, as well as installation of a impeller pump on the gravity-flow pipe, between the main venting pipe and the retention tank, a gate is installed, and the retention tank has a tightly closed inspection hole located in its upper section or aside, on the axis of the gravity-flow pipe.
• the retention tank has a control unit fixed to its upper section or aside which controls the operation of at least one impeller pump or the operating tank of the pneumatic positive- displacement pump, depending on the waste water level In the retention tank.
• an isolating organ and an elbow-shaped vaive or a non-return elbow- shaped valve integrated with a blade gate is installed.
• a cascade inspection chamber is installed whose inlet hole is located above its outlet hole.
• a non- return inflow valve is installed.
• the retention section is divided into two tanks, out of which the smaller retention tank, as a distributing chamber, is located inside the dry tank, and the greater external retention tank being a segment of the gravity-flow channel, whose cross-section is greater than the cross-section for gravity-flow waste water transfer required in calculations.
• the total retention capacity can be in this way adjusted by shortening or extending the external pipe retention tank already at the construction site. This can be of significant importance, when the estimations regarding waste water inflow of the tank have been modified and/or the pumps have been replaced by other models with different performance parameters, it is possible also due to the fact that such a tank is not a building but an element of a waste water channel.
• fig.1 is a pumping device diagram in a side view
• fig. 2 is an overview of the waste water pumping device from fig.1
• fig. 3 presents a waste water pumping device side view
• fig. 4 presents an overview of the waste water pumping device from fig.3
• fig.5 shows a side view of the waste water pumping device diagram
• fig. 6 presents an overview of the waste water pumping device from fig. 5
• fig. 7 and fig. 8 present diagrammaticaliy the same waste water pumping device from the first and second variant in two side views, and fig.
• fig. 9 and fig.10 presents diagrammaticaily the waste water pumping device from the first and second variant respectively, together with the external retention tank in a side view
• fig. 11 and fig.13 present diagrammaticaily the side views of variants of waste water pumping devices shown in fig.1 and fig. 3
• fig. 12 and fig. 14 present an overview of waste water pumping devices from fig. 11 and fig. 13.
• the waste water pumping device 1 presented in fig. 1 and fig. 2 has two impeller pumps 2 with air-cooled engines and it is installed in a dry tank 3 as a manhole chamber with a flat bed 4. Waste water inflow is provided by an gravity-flow pipe 5 connected to the waste water pumping device 1 and the outlet is provided by a pressure pipe 6. Furthermore, the waste water pumping device 1 has a retention tank 7 in form of a rectangular prism connected to with the waste water inflow by a gravity-flow pipe 5 from which, in its bottom section, two suction channels are conducted constituting a uniform structure with the retention ru I / I ⁇ Lcu ⁇ i I ⁇ JWV i— i
• the waste water pumping device 1 presented in fig. 3 and fig. 5 in its second variant has a waste water retention tank 7 made in form of a vertically positioned cylinder together with two suction channels 8 conducted from its bottom section in form of a base elbow, and the entire structure is fixed to a frame 9.
• a waste water pumping device 1 has been presented, as in fig. 3 and fig.
• fig. 7 and fig. 8 present diagrammatically the waste water pumping devices from the first and second variant themselves in two side views, ready for installation in a dry tank 3 in form of an integral manhole camber or consisting of separate components.
• Fig. 9 presents diagrammaticalJy the waste water pumping device 1 from the first variant together with the external retention tank 10 constituting a segment of the gravity-flow channel 11
• the external retention tank 10 constituting a segment of the gravity-flow channel 11
• a cascade inspection chamber 12 is located on the gravity-flow channel 11 , before the inlet of the external retention tank 10.
• the inlet of the cascade inspection chamber 12 is situated higher than its outlet, whereas the diameter of the outlet hole is greater than the diameter of the inlet hole.
• Fig.10 presents diagrammaticafly the waste water pumping device 1 from the second variant together with an external retention tank 10 constituting a segment of the gravity-flow channel 11 in a side view, where as on the gravity-flow channel 11, before the inlet of the external retention tank 10 there is a fault of the gravity-flow channel 11 delivered in such a way that the outlet behind the gravity-flow channel 11 connected to the inlet of the external retention tank 10 is located lower than the gravity-flow channel 11.
• Both the cascade chamber 12 and the fault of the gravity-flow channel 11 make for the full usage of the capacity of the external retention tank 10 without causing backwater or reversing of waste water in the gravity-flow channel 11.
• a gate 13 is installed on the gravity-flow pipe 5, inside the dry tank 3. From the gravity-flow pipe 5 located outside the dry tank 3 the main venting pipe 14 is conducted, connected to the retention tank 7 in its upper section with a lateral venting conduit 15, whereas the gate 13 is installed between the main venting pipe 14 and the retention tank 7. This provides proper venting of the retention tank and balancing of pressure in the tank and the gravity-flow pipe 5.
• the retention tank 7 has a tightly closed inspection hole 16 located in its upper section or aside, on the axis of the gravity-flow pipe 5.
• the inlet of the gravity-flow channel 11 in the externa! retention tank 10 is located higher than the gravity-flow pipe 5 which provides full venting of the externa! retention tank 10 to the direction of its inlet. Due to low capacity of the retention tank, the impeller pumps 2 do not necessarily need isolation between their inlet
• the suction channel 8 in form of, for example, a blade gate.
• the performance of the waste water pumping device 1 does not practically differ from the performance of other pumping devices of this type, apart from the fact that the pump performance control applies only to the retention tank 7 and the external tank 10 is used exclusively for accumulation of the waste water deliver via the gravity-flow channel 11.
• Controlling performed by starting and stopping the impeller pumps 2 takes place by means of a control unit 17 reacting to the changes of the liquid surface level in the retention tank 7.
• the control unit 17 is installed in the upper or side section of the retention tank, whereas in order to limit the fluctuation of the waste water surface level in the retention tank 7, special deflectors (masks) can be used at the outlet of the gravity-flow pipe 5.
• an isolating organ 18 and a non-return eibow-shaped valve 19 is installed on the pressure pipe, providing its full opening at minimum waste water flow speed.
• a non-return elbow-shaped valve integrated with a blade gate 20 can be used.
• Fig. 11 , fig.12, fig.13 and fig.14 present the variants of waste water pumping devices 1 employing a pneumatic positive- displacement pump 21.
• a pneumatic positive-displacement pump 21 between the retention tank 7 on at least one suction channel 8 to which is connected the inlet of the operating tank 2 ] of the pneumatic positive-displacement pump 21, a non-return inflow valve is installed 22.
• the pneumatic positive-displacement pump 21 has an air compressor 23 and an isolating valve 24 which enables isolation of the pneumatic link between the mentioned air compressor and the operating tank 2 ! , and a venting valve 25 located on the side junction of the pneumatic link enabling the venting of the operating tank 2 1 .
• This variant presented in fig. 11 is additionally equipped with an air compressor, tank 2 ⁇ located on the line of the pneumatic link between the air compressor 23 and the isolating valve 24.
• the performance of the above variants of the waste water pumping device 1 by using the pneumatic positive-displacement pump 21 does not practically differ from the performance of other waste water pumping devices, apart from the fact that the performance control of a pneumatic positive-displacement pump 21 applies only to the retention tank 7, and the externa! retention tank 10 is used exclusively for accumulation of the waste water deliver via the gravity-flow channel 11.
• Controlling performed by starting and stopping takes place by means of a control unit 17 reacting to the changes of the liquid surface level in the retention tank 7.
• the control unit 17 is installed in the upper or side section of the retention tank, whereas in order to limit the fluctuation of the waste water surface level in the retention tank 7, speciaf deflectors (masks) can be used at the outlet of the gravity-flow pipe 5.
• the control unit 17 closes the venting valve 25 and opens the isolating valve 24, whereupon the compressed air pushes the waste water from the operating tank 2 1 through the non-return elbow-shaped valve 19 and the pressure pipe 6, at the same time automatically closing the operating non-return inflow valve 22 which normally is open.
• the control unit 17 closes the isolating valve and opens the venting valve 25, as a result of which the non-return inflow valve 22 opens automatically, enabling waste water inflow to the operating tank. These cycles are repeated alternately at a frequency dependant from the intensity of waste water inflow.
• the air compressor is started each time the isolating valve 24 is open and the venting valve 25 is closed, or when the pressure in the air compressor tank 26 falls below the operating pressure set in the control unit 17.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Hydrology & Water Resources (AREA)
• Public Health (AREA)
• Water Supply & Treatment (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)
• Treatment Of Sludge (AREA)

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• 2007
  • 2007-03-22 WO PCT/PL2007/000014 patent/WO2007108711A1/en not_active Ceased
  • 2007-03-22 PL PL07715997T patent/PL2024577T3/pl unknown
  • 2007-03-22 KR KR1020087025696A patent/KR20090029689A/ko not_active Ceased
  • 2007-03-22 JP JP2009501373A patent/JP5269759B2/ja not_active Expired - Fee Related
  • 2007-03-22 US US12/225,392 patent/US8347912B2/en active Active
  • 2007-03-22 EP EP07715997.8A patent/EP2024577B1/en active Active

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