US3446398A - Drainage equipment - Google Patents

Drainage equipment Download PDF

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Publication number
US3446398A
US3446398A US610595A US3446398DA US3446398A US 3446398 A US3446398 A US 3446398A US 610595 A US610595 A US 610595A US 3446398D A US3446398D A US 3446398DA US 3446398 A US3446398 A US 3446398A
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US
United States
Prior art keywords
water
tank
air
vacuum
pump
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.)
Expired - Lifetime
Application number
US610595A
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English (en)
Inventor
Horst Schinke
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.)
HUDIG KG
Original Assignee
HUDIG KG
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 HUDIG KG filed Critical HUDIG KG
Application granted granted Critical
Publication of US3446398A publication Critical patent/US3446398A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/04—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock
    • F04D9/041—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock the priming pump having evacuating action
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps
    • F04D29/606—Mounting in cavities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/04—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock
    • F04D9/041—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock the priming pump having evacuating action
    • F04D9/042—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock the priming pump having evacuating action and means for rendering its in operative
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/04—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock
    • F04D9/044—Means for rendering the priming pump inoperative
    • F04D9/045—Means for rendering the priming pump inoperative the means being liquid level sensors
    • F04D9/046—Means for rendering the priming pump inoperative the means being liquid level sensors the means being floats

Definitions

  • the invention relates to equipment for draining canal works, foundation trenches and the like, by means of vacuum wells, with a vacuum tank that is continuously evacuated by one or more vacuum pumps.
  • the water present is collected in the vacuum tank, from which it is pumped intermittently with the aid of one or more pressure pumps. All the pumps used within and in conjunction with the equipment are controlled fully automatically by mechanical switching.
  • High vacuum pumps have also been proposed in which the vacuum pumps and water drainage pumps Work basically in parallel.
  • the pressure pump has to be designed as a self-priming pump and to have a correspondingly high lift.
  • the disadvantage of these pumps working in parallel is the relatively heavy power consumption when the amount of water to be handled is small.
  • a water pressure pump is incorporated in the tank.
  • the pump is driven by an electric motor situated outside the tank, the pump and its driving unit therefore being connected to each other by an extended pump spindle.
  • the pump is mounted on a stand pipe.
  • equipment for draining groundwater including a tank from which gaseous fluid can be continuously removed and at least one water pump the improvement which comprises casing means, vacuum-producing air pumps, drive means for the water and air pumps, and means for controlling mechanically the operation of said air pumps, said water pump being a submersible motor-driven water pump, and the water pump being fitted within the tank.
  • FIGURE 1 is a side elevation of the equipment
  • FIGURE 2 is a vertical section along the line II-II in FIGURE 1;
  • FIGURE 3 is a partial longitudinal section, to an enlarged scale, through the equipment shown in FIGURE 1;
  • FIGURE 4 shows a control disc together with arrange ments for transmission from a float linkage to the control disc segment in the equipment in accordance with the invention.
  • the vacuum tank 1 is mounted on a chassis 2.
  • the tank 1 has a drain connection 3, which should preferably serve for draining the vacuum tank, but which also enables a further water pump to be connected.
  • This drain connection 3 is fitted, according to circumstances, opposite the position occupied by the float when at rest, so that this can be locked in position by access through the drain connection, to prevent damage in transit.
  • the vacuum tank 1 Towards the top of the vacuum tank 1, two draw-off connections 4 are provided, the main pipe of a water-lowering system being connected thereto.
  • the vacuum tank 1 is also provided with two pressure-pipe connections 5, with which are associated non-return valves 6, to make the vacuum tank air-tight.
  • Air exhaust connection 10 consists of a chamber 13, which extends into the vacuum tank 1 and has a large number of apertures, 14. This chamber 13 contains a ball float 15, which, when vacuum tank 1 is overwater chamber 17 to a main pipe 18, which is in communication with two vacuum pumps 19a and 19b.
  • the trap or chamber 17 has a drain tap 20.
  • the mechanical control 12 When the vacuum tank 1 is over-full, the mechanical control 12 reaches its highest point and operates the air valve 11.
  • a float projection 31 presses against a push-rod 21, which in turn lifts the obstructing ball 22. Air flows in and reduces the vacuum. This air is directed by Way of a pipe 23 into the trap or chamber 17, to relieve the vacuum therein.
  • a float 24, which is rigidly attached to a float linkage 25, transmits the flotation movement via a spindle 26 to a control disc 27, on which the total range of the flotation movement, limited by the height of the vacuum tank, is converted to one segment.
  • the control disc 27 carries projections 28, by which motor controls 29 are operated, Any desired number of pumps can be fully automatically controlled. As these projections 28 are differently spaced within the segments, the control paths are graded in such a way that fully automatic control is possible with a small number of control operations. While the range of changeover is graded for each pump, the maximum range of operation is retained.
  • One end 30 of the vacuum tank 1 is detachably secured to enable the constructional parts to be inserted from that end.
  • the mode of operation of the equipment is as follows:
  • the two vacuum pumps 19a and 19b serve to extract the air from the pipes and draw the pumping fluid into the vacuum tank 1. Air is extracted continuously to form at least a partial vacuum.
  • One or more vacuum pumps for maintaining a cushioning vacuum can be intermittently switched in automatically at the predetermined maximum graded level.
  • the water collects in the vacuum tank 1. The water level also rises higher and higher within the casing of the submerged motor-driven pumps 9a and 9b and, because of the equalisation bore 8, in the pipe 7.
  • predetermined graded level a is reached, the pump 9a is switched on.
  • the pump 9a is switched off.
  • control is fully automatic while the grading of the predetermined level reduces the number of control operations.
  • control lever of the motor control it is desirable for the control lever of the motor control to be carried freely by the control disc until it jumps to the predetermined control position at the dead centre or control point.
  • the control lever moves simultaneously clear of the guidance of the control disc, so that this disc can move on to carry out the system of graded switching.
  • the motor control lever should preferably be guided by cams mounted on the control disc.
  • the control floats acts on a valve when at its highest flotation point. This valve opens under the pressure exerted by the float and allows air to flow into the vacuum tank, reducing the vacuum and increasing the water output.
  • the air entering under the control of the valve should preferably be passed through a connecting pipe to a trap for water of condensation.
  • the air suction pipe may well take the form of a nozzle pipe in the vacuum tank.
  • the air intake is so controlled that the water of condensation is deposited in a trap, from which it can be allowed to discharge.
  • the float linkage can be protected against damage in transit by a locking device operated through the drainage connection.
  • the pump both the water pump and its drive are housed in the vacuum tank, so that any leaks in the pump and/ or stand pipe are rendered harmless.
  • the pump moreover, has a generously proportional intake, increased resistance at the intake connection thus being avoided.
  • the pump may be fitted with rotors equipped with paddles or passages to enable it to drive coarse grains of sand and the like along with the water, without the operation of the pump being adversely affected thereby.
  • a non-return valve inserted in the delivery pipe of the pump can be relied on to eliminate any risk of outside air being drawn in.
  • Equipment for draining ground water including a tank from which gaseous fluid can be continuously removed and at least one water pump, comprising vacuum-producing air pumps mounted on the tank,
  • said pump being a submersible motor-driven water pump fitted within the tank and said tank, said pumps, drive means and control means being constructed as a unit.
  • said drive means includes electric motors and said control means includes a float movable within the tank in dependence upon water level, and switch means operable by said float to control said electric motors.
  • Equipment according to claim 2 further comprising an air valve mounted in the tank, and
  • Equipment according to claim 4 further comprising means defining an air exhaust connection from said tank to said vacuum-producing air pumps,
  • Equipment according to claim 5 comprising an opening from the body of the tank into the con densed Water trap
  • a ball float arranged to close the said opening when the water level in the tank reaches a pre-set level, and means defining a perforated chamber holding captive said ball float.
  • Equipment for draining ground water including a tank from which gaseous fluid can be continuously re moved and at least one water pump comprising vacuum-producing air pumps mounted on the tank,
  • switch means operable by said float to control said drive means for said vacuum-producing air pumps and said Water pump,
  • said water pump being a submersible motor-driven Water pump fitted within the tank.
  • Equipment according to claim 7 comprising a ball float arranged to close the opening in the Water trap when the water in the tank reaches a pre-set level

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
US610595A 1966-01-26 1967-01-20 Drainage equipment Expired - Lifetime US3446398A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH0058351 1966-01-26

Publications (1)

Publication Number Publication Date
US3446398A true US3446398A (en) 1969-05-27

Family

ID=7160111

Family Applications (1)

Application Number Title Priority Date Filing Date
US610595A Expired - Lifetime US3446398A (en) 1966-01-26 1967-01-20 Drainage equipment

Country Status (3)

Country Link
US (1) US3446398A (de)
DE (1) DE1528911C3 (de)
GB (1) GB1159072A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3558018A (en) * 1968-06-29 1971-01-26 Hudig Kg Fa Water pockets, namely reservoirs for storing water received from underground water pumping equipment

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB722617A (en) * 1952-04-17 1955-01-26 John Edwin Brassington Vacuum apparatus for filling containers for transporting liquids
US2792158A (en) * 1954-01-19 1957-05-14 Erie Meter Systems Inc Pressure evacuating means for storage vessels
US3040785A (en) * 1959-08-17 1962-06-26 Grindle Christopher Pig parlor cleaner
US3130878A (en) * 1960-06-23 1964-04-28 Ciba Ltd Apparatus for pumping liquids from containers
US3136485A (en) * 1963-01-08 1964-06-09 Paul M Bellows Self-loading liquid fertilizer spreader

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB722617A (en) * 1952-04-17 1955-01-26 John Edwin Brassington Vacuum apparatus for filling containers for transporting liquids
US2792158A (en) * 1954-01-19 1957-05-14 Erie Meter Systems Inc Pressure evacuating means for storage vessels
US3040785A (en) * 1959-08-17 1962-06-26 Grindle Christopher Pig parlor cleaner
US3130878A (en) * 1960-06-23 1964-04-28 Ciba Ltd Apparatus for pumping liquids from containers
US3136485A (en) * 1963-01-08 1964-06-09 Paul M Bellows Self-loading liquid fertilizer spreader

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3558018A (en) * 1968-06-29 1971-01-26 Hudig Kg Fa Water pockets, namely reservoirs for storing water received from underground water pumping equipment

Also Published As

Publication number Publication date
DE1528911A1 (de) 1969-12-11
DE1528911C3 (de) 1975-11-20
GB1159072A (en) 1969-07-23

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