WO2009018239A1 - Appareils et procédés de système de vide à base de véhicule - Google Patents

Appareils et procédés de système de vide à base de véhicule Download PDF

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Publication number
WO2009018239A1
WO2009018239A1 PCT/US2008/071398 US2008071398W WO2009018239A1 WO 2009018239 A1 WO2009018239 A1 WO 2009018239A1 US 2008071398 W US2008071398 W US 2008071398W WO 2009018239 A1 WO2009018239 A1 WO 2009018239A1
Authority
WO
WIPO (PCT)
Prior art keywords
vacuum
tank
operable
inlet
electric motor
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.)
Ceased
Application number
PCT/US2008/071398
Other languages
English (en)
Inventor
Donald L. Emerson Jr.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FLEET MAINTENANCE Inc
Original Assignee
FLEET MAINTENANCE Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by FLEET MAINTENANCE Inc filed Critical FLEET MAINTENANCE Inc
Publication of WO2009018239A1 publication Critical patent/WO2009018239A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
    • E03F7/10—Wheeled apparatus for emptying sewers or cesspools
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/002—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for driven by internal combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2220/00—Application
    • F04C2220/10—Vacuum

Definitions

  • the present invention is related to vacuum systems, and more particularly, to apparatus and methods for vehicle-based mobile vacuum systems.
  • BACKGROUND Vehicle-based mobile vacuum systems are used in a number of applications, such as, but not limited to septic servicing, grease trap servicing, and dry waste vacuuming.
  • septic servicing systems include, but are not limited to, portable toilet vacuum service units and septic service units. The operation of a portable toilet vacuum service unit will be described by way of example.
  • a known portable toilet vacuum service unit is a truck-based vacuum system that includes a vacuum pump, a waste storage tank, and a vacuum hose.
  • a common capacity of waste storage tanks is 300-3600 gallons.
  • the vacuum pump creates a vacuum commonly in a range of 15 to 20 inches of mercury in the storage tank.
  • the vacuum hose is coupled to the storage tank and is used to draw the waste product into the storage tank.
  • the vacuum pump is powered via a power take-off (PTO) driven by a drive gear of a transmission of a truck.
  • An output shaft of the PTO engages the vacuum pump via a clutch pack.
  • the vacuum pump is engaged with the PTO, and the engine is driven at a high idle speed sufficient to drive the vacuum pump.
  • the vacuum pump is required to be continuously engaged with the PTO and thus the engine is operated at high idle for the duration of a service call so as to maintain the vacuum in the storage tank.
  • the vacuum is operable to draw material into a hose and into the storage tank.
  • a vacuum system for a vehicle-based mobile vacuum handling system that provides the vacuum without the associated high idle operation of the truck engine and without the associated maintenance issues of the power take-off or auxiliary internal combustion engines.
  • a vacuum control system for a vehicle-based mobile vacuum handling system that provides the vacuum as needed with little or no intervention on the part of the operator.
  • FIG. 1 is a side view of a vehicle-based vacuum system, in accordance with an embodiment
  • FIG. 2 is a schematic of a vacuum system in accordance with an embodiment
  • FIG. 3 is a schematic of the vehicle-based mobile vacuum system in accordance with another embodiment
  • FIG. 4 is a schematic of a vehicle-based mobile vacuum system in accordance with another embodiment.
  • Embodiments in accordance with the present invention provide a vehicle- based mobile vacuum system.
  • FIG. 1 is a side view of a vehicle-based mobile vacuum system 2 comprising a vacuum tank 20, a storage tank 30, an electric motor 42, and a vacuum pump 40 in operable engagement with the electric motor operable to create a vacuum in the vacuum tank 20, in accordance with an embodiment of the present invention.
  • the vehicle-based mobile vacuum system 2 is shown in FIG. 1 as being carried by a truck 10.
  • the truck 10 includes a cab 12 and a chassis 14 suitable for mounting the vehicle-based mobile vacuum system 2. This embodiment is shown by way of an example of an implementation of a vehicle-based mobile vacuum system 2 and is not limited there to.
  • FIG. 2 is a schematic of an embodiment of a vehicle-based mobile vacuum system 2 of the embodiment of FIG. 1.
  • the vacuum tank 20 is a containment vessel having a primary inlet 22 controlled by an inlet valve 25 operable for filling the vacuum tank 20 with a material drawn in by a vacuum, and a primary outlet 24 operable for dispensing the material therefrom.
  • the vacuum tank 20 further comprises a vacuum inlet 26 controlled by a vacuum valve 27 operable to couple with a low pressure side of the vacuum pump 40.
  • the vacuum inlet 26 comprises a primary shutoff valve 28 that is operable to prevent material within the vacuum tank 20 from entering the vacuum inlet 26 and potentially into the vacuum pump 40.
  • the primary inlet 22 is provided with a hose 23 as an extension of the primary inlet 22 suitable for providing vacuum pickup service operable to draw material through the hose and into the vacuum tank.
  • the vacuum inlet valve 27 is opened to the vacuum inlet 26 and the vacuum pump 40 is driven by the electric motor 42 to create a vacuum within the vacuum tank 20.
  • the inlet valve 25 is opened such that vacuum is provided at the end of the hose 23. Material may be drawn up the hose 23 and into the vacuum tank 20.
  • the storage tank 30 is a containment vessel having a secondary inlet 32 operable for coupling to the primary outlet 24 of the vacuum tank 20, and a secondary outlet 34 operable for dispensing the material therefrom. Control of material from the vacuum tank 20 to the storage tank 30 is provided by a first valve 21. Control of material from the storage tank 30 to the secondary outlet 34 is provided by a second valve 31.
  • the first valve 21 is closed, and the vacuum inlet valve 27 is opened.
  • the vacuum pump 40 is caused to operate to evacuate the vacuum tank 20 to a predetermined pressure below atmospheric.
  • the inlet vacuum valve 25 is opened providing vacuum service at the end of the hose 23 that is coupled to the vacuum inlet 22. Material may be drawn through the hose and into the vacuum tank 20.
  • the vacuum tank 20 is filled with a predetermined quantity of material. Transfer of the material contents of the vacuum tank 20 to the storage tank 30 may be affected by a number of means.
  • the vacuum tank 20 is located above the storage tank 30 such that gravity may be used to transfer the contents of the vacuum tank 20 to the storage tank 30. In operation, any vacuum within the vacuum tank 20 is relieved to atmospheric pressure and the first valve 21 is opened so as to allow the contents to transfer from the vacuum tank 20 to the storage tank 30.
  • the vacuum pump 40 is reversible so as to provide gas pressure to the vacuum inlet 26 to assist in the transfer of the contents of the vacuum tank 20 to the storage tank 30. Gas pressure assistance would be particularly beneficial for transferring fluid-based materials.
  • any vacuum within the vacuum tank 20 is relieved to atmospheric pressure.
  • the vacuum pump 40 is reversed to pressurize the vacuum tank 20 to a pressure above that within the storage tank 30.
  • the primary outlet 24 of the vacuum tank 20 is opened to allow the contents to drain to the storage tank 30 assisted by the pressure supplied by the vacuum pump 40.
  • the vacuum tank 20 is provided with a pressure release valve suitable for overpressure protection and pressure relief.
  • electrical service to the electric motor 42 may be provided by the truck electrical system, an auxiliary electrical system, or an independent electrical system dedicated to the vacuum delivery system 2.
  • the vacuum supply 40 is an electric vacuum pump driven by the electrical system of the truck 10, such as, but not limited to, a 12, 24, 36 and 48 volt electrical system.
  • a storage battery system 60 comprises one or more storage batteries 62 in electrical communication with the truck electrical system 50 and the electric motor 42.
  • the storage batteries 62 may be charged by an electrical system, such as, but not limited to, the electrical system 50 of the truck 10 so as to provide power to the electric motor 42 that drives the vacuum pump 40.
  • the truck electrical system 50 is augmented by the addition of an alternator, besides the one commonly found on vehicles, operable to charge the storage batteries 62 between service calls.
  • the additional alternator may be of any desired predetermined voltage suitable for the particular purpose, such as, but not limited to, 24, 36, and 48 volt alternators.
  • the storage batteries 62 may be recharged as needed, such as, but not limited to, during transport from one job site to another.
  • the capacity of the storage batteries 62 is predetermined to provide a predetermined electrical energy capacity to power the electric motor 42 for a predetermined period of time, such as, but not limited to, that time associated with one or more typical service calls. Such capacity may allow the truck engine to be run at low idle instead of the high idle required of previous systems. Further, the capacity of the storage batteries 62 may be such to allow the truck engine to be turned off during one or more service calls with all power requirements of the electric motor 42 provided by the storage batteries 62.
  • the vacuum supply 40 may be controlled by a control system 70 to respond to a vacuum switch 44 operable to sense the vacuum in the vacuum tank 20. If the vacuum switch 44 detects that the pressure within the vacuum tank 20 is above a predetermined value, the vacuum pump 40 is caused to operate to decrease the pressure in the vacuum tank 20. If the vacuum switch 44 detects that the pressure is below a predetermined value, the vacuum supply 40 is caused to terminate operation.
  • a vacuum control system 70 for a mobile, vehicle-based vacuum service unit is provided.
  • the vacuum control system 70 is provided for controlling the vacuum and associated power components on an as-needed automated basis.
  • the vacuum control system 70 comprises a vacuum switch 44 operable to detect vacuum in the vacuum tank 20.
  • the vacuum switch 44 is provided between the vacuum valve 27 and the vacuum tank 20 operable to sense vacuum in the vacuum tank 20.
  • the vacuum switch 44 is operable to control the operation of the vacuum system 2; that is, for the engagement of the electric motor 42 driving the vacuum pump 40.
  • the electric motor 42 is driven by a signal from the vacuum switch 44. In operation the vacuum switch 44 is operable to control the operation of the electric motor 42 that drives the vacuum pump 40.
  • the vacuum switch 44 is operable to close a circuit so as to provide power to the electric motor 42 if the vacuum switch 44 senses a predetermined pressure. If the vacuum switch 44 senses a predetermined pressure less than a predetermined value below atmospheric, the vacuum switch 44 closes the circuit which causes the electric motor 42 to start, driving the vacuum pump 40. If the vacuum switch 44 senses a predetermined pressure more than a predetermined value below atmospheric, the vacuum switch 44 opens the circuit which causes the electric motor 42 to stop therefore stopping the vacuum pump 40.
  • the operation of the vacuum pump 40 may thus be controlled by the vacuum control system 70 so as to provide a vacuum within the vacuum tank 20 within a predetermined range without intervention by the operator.
  • the vacuum pump 40 is operated on an as-needed basis rather than on a continual basis.
  • the vacuum switch 44 is operable to engage the electric motor 42 if the vacuum switch 44 senses a pressure value at or about between 10 to 15 inches of mercury below atmospheric and to disengage the electric motor 42 if the vacuum switch 44 senses a pressure value at or about between 20 to 25 inches of mercury below atmospheric.
  • the frequency of cycling of the vacuum pump 40 may be determined by a specific application. For example, once the vacuum tank 20 is brought to a predetermined vacuum, if the product being vacuumed is a liquid and the vacuum hose remains in the product if the vacuum valve 25 is opened, relatively little cycling is expected. Relatively more frequent cycling is expected if the product is dry and the vacuum hose is sucking air.
  • the size of the vacuum tank 20 and the desired range of vacuum are factors, including others, that determine the frequency of cycling of the system 1.
  • FIG. 3 is a schematic of a vehicle-based mobile vacuum system 3 which is substantially the same as that of FIG. 2 with the addition of a secondary vacuum tank 120.
  • the secondary vacuum tank 120 is in fluid communication between the vacuum pump 40 and the vacuum tank 20.
  • the secondary vacuum tank 120 is provided as a containment vessel in case material is drawn into the vacuum inlet 26 of the vacuum tank 20.
  • the secondary vacuum tank 120 is provided with a secondary shutoff valve 29 that is operable to prevent material contained in the secondary vacuum tank 120 from entering the vacuum pump 40. Containment of any material within the secondary vacuum tank 120 prevents any material from being drawn directly into the vacuum pump 40 potentially damaging the vacuum pump 40.
  • the primary shutoff valve 28 and the secondary shutoff valve 29 provide an effective system for preventing foreign material from entering the vacuum pump 40.
  • FIG. 4 is a schematic of a vehicle-based mobile vacuum system 4 comprising a vacuum waste storage tank 130, a vacuum pump 40 operable to produce vacuum in the vacuum waste storage tank 130, a secondary vacuum tank 120 in fluid communication between the vacuum pump 40 and the vacuum waste storage tank 130, an electric motor 42, and a storage battery system 60 including one or more storage batteries 62 provided between a truck electrical system 50 and the electric motor 42, in accordance with an embodiment of the present invention.
  • the vacuum waste storage tank 130 is a containment vessel having a primary inlet 132 operable for filling the tank 130 with a material drawn in by a vacuum, and a primary outlet 134 for dispensing the material therefrom.
  • the vacuum waste storage tank 130 further comprises a vacuum inlet 26 operable to couple with the secondary vacuum tank 120 which itself is coupled to the vacuum pump 40.
  • the vacuum inlet 26 comprises a primary shutoff valve 28 that is operable to prevent material contained in the vacuum tank 130 from entering the vacuum inlet 26 and potentially into the vacuum pump 40.
  • the secondary vacuum tank 120 is provided as a containment vessel in case material is drawn into the vacuum inlet 26 of the secondary vacuum tank 120.
  • the secondary vacuum tank 120 is provided with a secondary shutoff valve 29 that is operable to prevent material contained in the secondary vacuum tank 120 from entering the vacuum pump 40. Containment of any material within the secondary vacuum tank 120 substantially prevents any material from being drawn directly into the vacuum pump 40 potentially damaging the vacuum pump 40.
  • the primary shutoff valve 28 and the secondary shutoff valve 29 operable to provide an effective system for preventing foreign material from entering the vacuum pump 40.
  • the primary inlet 132 is provided with a hose 131 as an extension of the primary inlet 132 used for providing vacuum service as previously described.
  • the vacuum waste storage tank 130 may be constructed of steel, aluminum, polymer or fiberglass, but may also be any material suitable for containment of the desired fluid while being structurally sound to withstand the vacuum created by the vacuum pump 40.
  • the vacuum waste storage tank 130 has a predetermined material capacity.
  • the vacuum waste storage tank 130 has a capacity of 300-3600 gallons so as to provide volume for a large single service call or provide for multiple service calls without the need to release the vacuum from the vacuum waste storage tank 130 in order to empty the vacuum waste storage tank 130 as would be the case with a smaller storage tank.
  • storage batteries 62 are operable to be charged by the electrical system 50 of the truck 10 and provide power to the electric motor 42 that drives the vacuum pump 40.
  • the storage batteries 62 are recharged as needed, such as, but not limited to, during transport from one job site to another.
  • the capacity of the storage batteries 62 is predetermined to provide a predetermined electrical energy to power the electric motor 42 for a predetermined period of time, such as, but not limited to, that time associated with one or more typical service calls. Such capacity allows the truck engine to be run at low idle instead of the high idle required of previous systems.
  • the capacity of the storage batteries 62 may be such to allow the truck engine to be turned off during one or more typical service calls with all power requirements of the electric motor 42 provided by the storage batteries 62. It is appreciated that multiple elements as described above may be used in combination to provide apparatus suitable for a particular purpose. It is appreciated that the use of multiple vacuum pumps 40 may be operable to increase efficiencies of the system. It is understood that these combinations are appreciated and within the scope of the present invention.
  • Embodiments in accordance with the present invention provide vehicle- based mobile vacuum systems that address the limitations of current systems.
  • the power take-off (PTO) subsystem has been eliminated such that the operation of the vacuum system is not dependent on the operation of the truck engine.
  • An electrical motor that drives the vacuum pump is provided with electrical energy from a storage battery system.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

L'invention concerne un appareil et des procédés pour des systèmes de vide mobiles à base de véhicule.
PCT/US2008/071398 2007-07-27 2008-07-28 Appareils et procédés de système de vide à base de véhicule Ceased WO2009018239A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US95235707P 2007-07-27 2007-07-27
US60/952,357 2007-07-27

Publications (1)

Publication Number Publication Date
WO2009018239A1 true WO2009018239A1 (fr) 2009-02-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/071398 Ceased WO2009018239A1 (fr) 2007-07-27 2008-07-28 Appareils et procédés de système de vide à base de véhicule

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WO (1) WO2009018239A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103216407A (zh) * 2013-04-28 2013-07-24 江苏亚太泵阀有限公司 一种移动式快速自动抽水系统
NL2035962B1 (en) * 2023-10-05 2025-04-11 Rom B V Service device and method for emptying and cleaning a reservoir or pipe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5098580A (en) * 1986-10-21 1992-03-24 Arne Andersen Method and system for receiving and handling polluted liquids, especially stratified oil products in petrol and oil tanks
JPH05170025A (ja) * 1991-12-25 1993-07-09 Ask:Kk 断熱材吸引取出し装置
US5755264A (en) * 1997-01-08 1998-05-26 Guzzler Manufacturing, Inc. Vehicle for transporting liquid and semi-liquid hazardous/non-hazardous material
KR20030090428A (ko) * 2002-05-23 2003-11-28 주식회사 동명엔터프라이즈 유수분리조 청소차량

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5098580A (en) * 1986-10-21 1992-03-24 Arne Andersen Method and system for receiving and handling polluted liquids, especially stratified oil products in petrol and oil tanks
JPH05170025A (ja) * 1991-12-25 1993-07-09 Ask:Kk 断熱材吸引取出し装置
US5755264A (en) * 1997-01-08 1998-05-26 Guzzler Manufacturing, Inc. Vehicle for transporting liquid and semi-liquid hazardous/non-hazardous material
KR20030090428A (ko) * 2002-05-23 2003-11-28 주식회사 동명엔터프라이즈 유수분리조 청소차량

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103216407A (zh) * 2013-04-28 2013-07-24 江苏亚太泵阀有限公司 一种移动式快速自动抽水系统
NL2035962B1 (en) * 2023-10-05 2025-04-11 Rom B V Service device and method for emptying and cleaning a reservoir or pipe

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