US3671148A - Pump priming and flow control valve for pumping two different fluids - Google Patents

Pump priming and flow control valve for pumping two different fluids Download PDF

Info

Publication number
US3671148A
US3671148A US3671148DA US3671148A US 3671148 A US3671148 A US 3671148A US 3671148D A US3671148D A US 3671148DA US 3671148 A US3671148 A US 3671148A
Authority
US
United States
Prior art keywords
pump
valve
conduit
pumping
flow
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
Other languages
English (en)
Inventor
Paul H Reeve
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.)
Auto Research Corp
Original Assignee
Auto Research Corp
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 Auto Research Corp filed Critical Auto Research Corp
Application granted granted Critical
Publication of US3671148A publication Critical patent/US3671148A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/24—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N13/00—Lubricating-pumps
    • F16N13/20—Rotary pumps
    • 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
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2514—Self-proportioning flow systems
    • Y10T137/2521—Flow comparison or differential response

Definitions

  • a valve element which is shiftable to both block and regulate the flow of the fluid of lower viscosity; the valve normally blocks the flow of lower viscosity fluid until the pump is primed; outlet pressure from the pump, which is developed only when the pump is primed, moves the valve away from the blocking position, against a biasing means, to open the conduit of lower viscosity fluid; the biasing means controls the extent to which the valve is opened, and thereby regulates the ratio of low viscosity to high viscosity fluid that is pumped.
  • the present invention generally relates to pumps for pumping two fluids of differing viscosities, and more particularly to pumps for pumping a gas and a liquid like air and lubricant oil.
  • the pump has particular application in connection with the production of a lubricant fog.
  • the initial pumping operation of the pump can be largely satisfied by the compressible gas itself.
  • the gas expands and fills the inlet chamber, creating little suction to draw in the higher viscosity liquid.
  • the present invention improves upon the prior art by providing a priming assistance and flow rate controlling valve in the inlet pathway of the lower viscosity fluid.
  • a biasing means normally biases the valve to prevent the entry before priming or restrict the entry after priming of lower viscosity fluid.
  • the valve communicates with the outlet pressure from the pumping means. By adjustment of the biasing means, the movement of the valve under the pressure exerted in the outlet conduit is balanced for desired pump operation.
  • the valve is so shaped and positioned that in its initial position before the pump is primed, the biasing means holds the valve where it substantially completely blocks the entrance of lower viscosity fluid into the pumping chamber.
  • the pump When the pump operates, it only draws the higher viscosity fluid through the pump, rapidly sealing the pump, and priming it.
  • the higher viscosity fluid is a liquid, e.g. lubricating oil
  • the pump is being primed with an incompressible and inexpansible fluid. Therefore, the displacement caused by the expanding and contracting pumping chambers is filled with and causes pumping of liquid, and the priming is completed rapidly.
  • the outlet pressure of the unit rises and operates on the valve to move it away from blocking the lesser viscosity fluid inlet against the force of the biasing means.
  • the valve is so shaped that as it is shifted by the outlet pressure, it gradually widens the inlet opening leading from the supply of lower viscosity fluid and permits a greater relative quantity of this fluid to be pumped.
  • the now primed pump pumps both the lower and the higher viscosity fluids.
  • this Simple adjustment to the force of the biasing means adjusts the quantity of liquid droplets in and the density of the fog produced.
  • Venturi nozzles or the like means are not required to control the quantity of high viscosity fluid which is pumped.
  • the present invention alseo permits temporary adjustments in the pumping apparatus while it is continuing to operate, without requiring replacement of parts or halting of the pumping. Should a greater quantity of high viscosity fluid be temporarily required, e.g. in a fog pump application more liquid lubricant might be required to lubricate a bearing that is becoming overheated, adjustment of the biasing means to readjust the position of the valve varies the relative quantities of high and low viscosity fluids being pumped. For example, the ratio of lubricant fog to the liquid oil, which has either not entered or has condensed from fog form, exiting from the outlet nozzle can be adjusted to provide a greater quantity of the liquid to cool the overheated bearing. Later readjustment back to the prior operating mode is easy.
  • an air compressor which pumps only air, may require a liquid to lubricate its engaging surfaces but the liquid should not be pumped through the unit.
  • valve may be designed so that as it shifts when the pump is primed, it blocks completely or partially the inflow of liquid, thereby ensuring that only enough liquid to lubricate the compressor itself is provided.
  • FIG. 1 is a cross-sectional view of a pumping means incorporating the present invention.
  • FIG. 2 is a fragmentary view of the pumping means of FIG. 1 showing the invention in operation.
  • the present invention is described in connection with a vane pump used in pumping relatively low viscosity air and relatively high viscosity lubricant oil so as to generate a lubricant fog.
  • the present invention is adaptable for use with other types of pumps and in connection with other high and low viscosity fluids.
  • a vane pump is shown, for example, in aforementioned U.S. Pat. No. 2,691,428.
  • a vane pump is comprised of a cylindrical pump element 12, which is rotated concentrically about its axis 14. The axis is eccentrically located within pump chamber 16.
  • a plurality of vanes 18 reciprocate into and out of respective vane slots 20 in pump element 12 and are held against wall 22 surrounding pump chamber -16.
  • the vanes divide main pump chamber 16 into a number of pumping chambers, e.g. 26, which is the expanding intake chamber, and 28, which is the contracting expulsion chamber.
  • each chamber between each pair of vanes also rotates and moves from being an intake chamber 26 to an expulsion chamber 28, thereby carrying the materials to be pumped to the outlet of the pump.
  • the housing of pump 10 includes a number of bores therethrough, which serve as the pump conduits and guideways, as described below. As element 12 rotates, each intake chamber 26 of the pump communicates with conduit 30. This conduit extends from conduit junction 32.
  • Junction 32 joins oil inlet conduit 34 and air inlet conduit 36 to produce a combined air-oil flow.
  • Inlet conduit 34 is connected with an appropriate reservoir (not shown) of oil.
  • Inlet conduit 36 communicates with. a supply of gas or air, or, most usually, with the ambient atmosphere.
  • Each expulsion chamber 28 communicates with the outlet conduit 40', which leads to the conventional outlet fog nozzle means 42.
  • the pumped fog and liquid oil exits from nozzle means 42.
  • any size nozzle or number of nozzles may be chosen in accordance with the particular application for the pump means of the invention.
  • the present invention relates to a means for controlling the flow of air through conduit 36 into junction 32.
  • the pump By controlling the flow of air, the pump can be primed and the relative flow rates of air and oil can be regulated.
  • a pump priming assistance and flow rate controlling valve 50 is positioned in and is moved through a guideway conduit 52. At one end, conduit 52 communicates with outlet conduit 40. Guideway 52 extends away from conduit 40 a distance sufiicient to permit valve 50 to shift through its entire course. Guideway 52 has a circular crosssection and valve 50 is of a spool type, which has a corresponding circular cross-section.
  • Air inlet conduit 36 intersects guideway conduit 52, and conduit 36 may be partially or completely blocked by valve 50 as it moves through guideway 52, in the manner described below.
  • Valve 50 includes a widened end cap 54, which orients and guides the valve movement.
  • Cap 54 seals guideway 52 and provides a surface 55 against which the outlet pressure in conduit 40 can operate, as described below.
  • valve 50 At the end opposite cap 54, valve 50 includes air inlet conduit blocking section 56, the length and diameter of which is such that it can completely block oil the flow of air through conduit 36 when section 56 is moved into a position where it can extend across inlet conduit 36.
  • End cap 54 and valve section 56 are joined by gradually tapering, intermediately located, flow regulating valve sec tion 58.
  • valve 50 As valve 50 is shifted from the position in FIG. 1, where valve section 56 completely blocks conduit 56, .to the left toward its position of FIG. 2, the tapering of surface 58 gradually increases the cross-sectional area of the opening through conduit 36, thereby increasing the quantity of air, which will be permitted through the conduit.
  • the flow rate of air to be mixed with the oil is varied.
  • Biasing means 60 operates on the left hand end of valve 50 to force same toward outlet conduit 40.
  • the valve shifts to the right to its position in FIG. 1 until its end cap 54 abuts positioning and abutment post 62, which is supported in position within the pump housing.
  • Post 62 is narrowed so as not to interfere with the transmission of pressure from conduit 40 against the end of cap 54.
  • Valve 50 will continue to shift to the left admitting a greater quantity of air in relation to the quantity of oil being pumped until spring 60 is sufficiently compressed to halt the movement of the valve. The forces on valve 50 are then in equilibrium.
  • the compression of spring 60 is adjusted by tightening of threaded adjustment means 64 against which one end of biasing means 60 presses.
  • threaded adjustment means 64 against which one end of biasing means 60 presses.
  • a simple adjustment of adjusting means 64 will vary the relative quantities of air and liquid oil that are pumped through the pump to provide optimum fog and/ or liquid output.
  • valve 50 will continue to serve as an efficient priming assistance means because when there is no output pressure in conduit 40, which would occur before the pump is primed, the force of biasing means 60 is sufiicient to move valve 50 over against abutment post 62 and block inlet conduit 36.
  • conduit 34 would be so positioned and valve 50 would be so placed that on shifting to the left in FIG. 1, valve 50 would partially or completely block the liquid conduit 34, thereby controlling liquid flow.
  • the invention utilizes a valve which is shaped so as to block the low viscosity fluid inlet line until the pump is primed, thereby to speed pump priming. The valve then shifts to open the low viscosity fluid line under the influence of the pressure at the outlet from the pump.
  • Adjustment means are provided to control the extent to to which the valve opens to permit low viscosity fluid to enter the pump, whereby the relative flow rates of high and low viscosity fluids are readily controlled.
  • first inlet conduit for a fluid of a relatively lower viscosity
  • second inlet conduit for a fluid of a relatively higher viscosity
  • junction between said first and said second conduits pumping means communicating with said junction for pumping the fluids to an outlet conduit; and an outlet conduit from said pumping means
  • a pump priming assistance valve positioned to be moved into and out of the path of flow through said first conduit for alternately blocking and permitting flow therethrough to said junction; said valve communicating with said outlet conduit to be shifted in a direction which opens said first conduit when pressure in said outlet conduit acts upon said valve;
  • a biasing means connected with said valve for biasing same in a direction which causes said valve to block said first conduit.
  • valve being so shaped and positioned that before pressure builds up in said outlet conduit, said valve 6 is held to completely block flow through said first conduit toward said junction.
  • valve further serving as a pump flow rate controlling valve; said valve being so shaped and positioned that a shifting thereof in one direction gradually increasingly opens said first conduit to cause flow therethrough at a greater rate, and movement of said valve in the other direction gradually closes said first conduit to cause flow therethrough at a lesser rate;
  • said biasing means operating upon said valve to be balanced against the pressure in said outlet conduit, thereby to regulate the flow through said first conduit.
  • the improvement further comprising, apparatus for adjusting the biasing force exerted by said biasing means upon said valve against the pressure in said outlet conduit.
  • the improvement further comprising, a guideway for controlling the path of movement of said valve; said outlet conduit being so connected with said guideway as to drive said valve toward said biasing means; said biasing means being so designed as to have its biasing force on said valve increased as said valve is moved toward it.
  • the improvement further comprising, apparatus for adjusting the biasing force exerted by said biasing means upon said valve.
  • valve having, for the purpose of regulating the rate of flow of lesser viscosity fluid through said first conduit, a tapering shaped section with the narrower end of said tapering section facing toward said outlet outlet conduit and the wider end thereof facing toward said biasing means.
  • valve having a portion, at the end thereof facing toward said biasing means, which is of suflicient width so as to completely block said first conduit.
  • valve being so positioned with respect to said second inlet conduit and being so shaped with respect thereto that when said valve shifts against said biasing means and opens said first conduit, said valve also moves to block said second conduit, thereby limiting the quantity of higher viscosity fluid in said pump.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Rotary Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
US3671148D 1971-01-27 1971-01-27 Pump priming and flow control valve for pumping two different fluids Expired - Lifetime US3671148A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11002471A 1971-01-27 1971-01-27

Publications (1)

Publication Number Publication Date
US3671148A true US3671148A (en) 1972-06-20

Family

ID=22330845

Family Applications (1)

Application Number Title Priority Date Filing Date
US3671148D Expired - Lifetime US3671148A (en) 1971-01-27 1971-01-27 Pump priming and flow control valve for pumping two different fluids

Country Status (8)

Country Link
US (1) US3671148A (enrdf_load_stackoverflow)
JP (1) JPS5119601B1 (enrdf_load_stackoverflow)
CA (1) CA951576A (enrdf_load_stackoverflow)
CH (1) CH562403A5 (enrdf_load_stackoverflow)
FR (1) FR2124712A5 (enrdf_load_stackoverflow)
GB (1) GB1334620A (enrdf_load_stackoverflow)
IT (1) IT946921B (enrdf_load_stackoverflow)
SE (1) SE373913B (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4094617A (en) * 1975-11-10 1978-06-13 Diesel Kiki Co., Ltd. Automotive air conditioner compressor
US4708598A (en) * 1984-07-31 1987-11-24 Seiko Seiki Kabushiki Kaisha Rotary type gas compressor
US4998969A (en) * 1990-05-14 1991-03-12 Outboard Marine Corporation Engine maintenance fluid introduction system
US5174740A (en) * 1990-07-31 1992-12-29 Samsung Electronics Co., Ltd. Hermetic type scroll compressor with regulation of lubricant to the inlet
US6012907A (en) * 1996-12-09 2000-01-11 Luk Fahrzeug-Hydraulik Gmbh & Co. Kg Flow-regulating arrangement for a hydraulic transporting device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6292264B2 (ja) 2016-08-01 2018-03-14 横浜ゴム株式会社 空気入りタイヤ

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4094617A (en) * 1975-11-10 1978-06-13 Diesel Kiki Co., Ltd. Automotive air conditioner compressor
US4708598A (en) * 1984-07-31 1987-11-24 Seiko Seiki Kabushiki Kaisha Rotary type gas compressor
US4998969A (en) * 1990-05-14 1991-03-12 Outboard Marine Corporation Engine maintenance fluid introduction system
US5174740A (en) * 1990-07-31 1992-12-29 Samsung Electronics Co., Ltd. Hermetic type scroll compressor with regulation of lubricant to the inlet
US6012907A (en) * 1996-12-09 2000-01-11 Luk Fahrzeug-Hydraulik Gmbh & Co. Kg Flow-regulating arrangement for a hydraulic transporting device

Also Published As

Publication number Publication date
SE373913B (enrdf_load_stackoverflow) 1975-02-17
FR2124712A5 (enrdf_load_stackoverflow) 1972-09-22
IT946921B (it) 1973-05-21
CH562403A5 (enrdf_load_stackoverflow) 1975-05-30
GB1334620A (en) 1973-10-24
CA951576A (en) 1974-07-23
JPS5119601B1 (enrdf_load_stackoverflow) 1976-06-18

Similar Documents

Publication Publication Date Title
US3703186A (en) Flow divider control valve assembly
US2502546A (en) Hydraulic apparatus
US3723025A (en) Variable bypass for fluid power transfer systems
US3349714A (en) Power steering pump
JP4230575B2 (ja) 変速機のための弁装置及びポンプ
US3635602A (en) Lifting tip seal pump
US3384020A (en) Pump
US3671148A (en) Pump priming and flow control valve for pumping two different fluids
US3401641A (en) Three area vane type hydraulic pump having force modulating flow restrictor means
US3635604A (en) Equipment for delivering liquid, particularly oil burners
US3123089A (en) Flow divider and control valve
US3103891A (en) Unloading relief valve
US3238884A (en) Variable positive displacement pump with rising pressure curve
US3753627A (en) Pump bypass liquid control
JPH05215082A (ja) ベーンポンプ
US3566901A (en) Fuel regulating valve
US3063245A (en) Torque converters
US3415194A (en) Pump
US6328535B1 (en) Flow control valve capable of adjusting fluid flow characteristics in accordance with a position of a valve element in a bore
US2910944A (en) Power transmission
US2899941A (en) Fluid motor
US2698579A (en) hammond
JPS6160304B2 (enrdf_load_stackoverflow)
US3316846A (en) Regulating system
USRE28428E (en) Pump priming and flow control valve for pumping two different fluids