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WO2025128683A1 - Pompe volumétrique - Google Patents

Pompe volumétrique Download PDF

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Publication number
WO2025128683A1
WO2025128683A1 PCT/US2024/059536 US2024059536W WO2025128683A1 WO 2025128683 A1 WO2025128683 A1 WO 2025128683A1 US 2024059536 W US2024059536 W US 2024059536W WO 2025128683 A1 WO2025128683 A1 WO 2025128683A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
seal groove
check valve
pump body
inlet
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
Application number
PCT/US2024/059536
Other languages
English (en)
Inventor
Joshua D. RODEN
David M. Larsen
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.)
Graco Minnesota Inc
Original Assignee
Graco Minnesota 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 Graco Minnesota Inc filed Critical Graco Minnesota Inc
Publication of WO2025128683A1 publication Critical patent/WO2025128683A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • 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
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • 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
    • F04B19/00—Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B1/00 - F04B17/00
    • F04B19/20—Other positive-displacement pumps
    • F04B19/22—Other positive-displacement pumps of reciprocating-piston type
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/1002—Ball valves
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/12—Valves; Arrangement of valves arranged in or on pistons
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/22—Arrangements for enabling ready assembly or disassembly

Definitions

  • the present disclosure relates generally to fluid pumping systems and pails thereof. More particularly, this disclosure relates to displacement pumps for fluid pumping systems.
  • Fluid sprayers include pumps that pressure spray fluid and drive the spray fluid to a nozzle for outputting the spray fluid as an atomized fluid spray.
  • Fluid sprayers include spray guns that can be held and manipulated by the user. The spray guns typically receive paint or other coating fluid under pressure and atomize the spray fluid. The spray fluid is typically put under pressure by a piston or diaphragm, which is referred to as airless spray.
  • Airless spray can typically range in pressure from about 500 pounds per square inch (psi) (about 3.45 Megapascal (MPa)) to about 7000 psi (about 48.26 MPa), however lower and higher pressures are possible. Due to the action of the piston or the diaphragm, uneven spray patterns can be developed, particularly on stopping and starting of spray or due to cyclical directional reversing of the piston or diaphragm. For example, internal chambers within the flowpath may contain pockets of spray fluid through which pressure waves can reverberate or otherwise echo and cause uneven spray patterns.
  • a displacement pump includes a pump body; a piston at least partially disposed in the pump body, the piston configured to reciprocate on a pump axis to pump fluid through the pump body; a first check valve disposed in the pump body, the first check valve configured to regulate a flow of the fluid through the pump inlet and into an upstream fluid chamber within the pump body; a second check valve carried by the piston and configured to regulate the flow of the fluid from the upstream fluid chamber to a downstream fluid chamber within the pump body; and at least one seal groove formed in an exterior of the pump body.
  • a displacement pump includes a pump body; a piston at least partially disposed in the pump body, the piston configured to reciprocate on a pump axis to pump fluid through the pump body; a first check valve disposed in the pump body, the first check valve configured to regulate a flow of the fluid through the pump inlet and into an upstream fluid chamber within the pump body; a second check valve carried by the piston and configured to regulate the flow of the fluid from the upstream fluid chamber to a downstream fluid chamber within the pump body; and exterior threading formed on the pump body, the exterior threading radially overlapping with the upstream fluid chamber.
  • a displacement pump includes a pump body; a piston at least partially disposed in the pump body, the piston configured to reciprocate on a pump axis to pump fluid through the pump body; a first check valve disposed in the pump body, the first check valve configured to regulate a flow of the fluid through the pump inlet and into an upstream fluid chamber within the pump body; a second check valve carried by the piston and configured to regulate the flow of the fluid from the upstream fluid chamber to a downstream fluid chamber within the pump body; and exterior threading formed on the pump body, the exterior threading radially overlapping with the first check valve.
  • a displacement pump includes a pump body; a piston at least partially disposed in the pump body, the piston configured to reciprocate on a pump axis to pump fluid through the pump body; a first check valve disposed in the pump body, the first check valve configured to regulate a flow of the fluid through the pump inlet and into an upstream fluid chamber within the pump body; a second check valve carried by the piston and configured to regulate the flow of the fluid from the upstream fluid chamber to a downstream fluid chamber within the pump body; at least one seal groove extending into an exterior of the pump body; and exterior threading formed on the pump body. The at least one seal groove is disposed axially between the exterior threading and the pump inlet.
  • a displacement pump includes a pump body; a piston at least partially disposed in the pump body, the piston configured to reciprocate on a pump axis to pump fluid through the pump body; and at least one seal groove formed in an exterior of the pump body.
  • a displacement pump includes a pump body, the pump body comprising an inlet housing and an outlet housing, the outlet housing being a cylinder, at least part of the outlet housing located within the inlet housing, the inlet housing connected to the outlet housing by interfaced threading; a piston at least partially disposed in the outlet housing, the piston configured to reciprocate on a pump axis to pump fluid through the pump body; a first check valve disposed inside of the inlet housing and outside of the outlet housing, the first check valve configured to regulate a flow of the fluid through the pump inlet and into an upstream fluid chamber within the outlet housing; a second check valve carried by the piston and configured to regulate the flow of the fluid from the upstream fluid chamber to a downstream fluid chamber within the pump body; and at least one seal groove formed in an exterior of the inlet housing so that the at least one seal groove directly radially overlaps with the first check valve.
  • FIG. 1 is a simplified block diagram of a pumping system.
  • FIG. 2 is an isometric view of a pumping assembly.
  • FIG. 3A is a cross-sectional view of a displacement pump and suction assembly showing the suction assembly disconnected from the displacement pump.
  • FIG. 3B is a cross-sectional view of the displacement pump and suction assembly connected together.
  • FIG. 4 is an enlarged isometric view showing a displacement pump and a suction assembly connected together.
  • the present disclosure relates to displacement pumps for pumping systems.
  • Pumps according to the present disclosure can be utilized in spray systems, such as for spraying paint, varnish, water, oil, stains, finishes, aggregate, coatings, and solvents, amongst other options, onto a substrate.
  • Pumps according to the present disclosure are configured to mate with a suction tube by a portion of the pump being received within the suction tube.
  • the pump includes one or more seals disposed on an exterior of a body of the pump. A sealing interface between the pump and the suction tube is formed by the one or more seals between the exterior of the pump and the interior of the suction tube.
  • Pumps according to the present disclosure are more compact and lighter weight than previous pumps.
  • Pumps according to the present disclosure provide for longer seal life at the interface between the pump and the suction tube. Pumps according to the present disclosure provide for easier access to check valves within the pump, allowing for simpler and efficient cleaning of debris and manual unseating of a stuck ball without having to disassemble the pump.
  • Components can be considered to radially overlap when those components are disposed at common axial locations along an axis and such that a line extending radially from the axis will extend through each of the radially overlapping components.
  • Components can be considered to axially overlap when those components are disposed at common radial and circumferential locations relative to an axis such that an axial line parallel to the axis extends through each of the axially overlapping components.
  • Components can be considered to circumferentially overlap when aligned about the axis at a common radial distance from the axis such that a circle centered on the axis passes through each of the circumferentially overlapping components.
  • FIG. 1 is a simplified block diagram of fluid pumping system 10.
  • Fluid pumping system 10 includes pumping assembly 12, reservoir 14, supply line 16, and spray gun 18.
  • Pumping assembly 12 includes assembly body 20, stand 22, pump 24, motor 26, drive 28, and controller 30.
  • Stand 22 includes supports 32.
  • Pump 24 includes pump body 34 and piston 36.
  • Controller 30 includes control circuitry 38, memory 40, and user interface 42.
  • Spray gun 18 includes gun handle 44, trigger 46, and nozzle 48.
  • Fluid pumping system 10 is configured to displace a fluid under pressure to a location downstream of pump.
  • fluid pumping system 10 can also be considered to form a fluid spraying system as the downstream location is spray gun 18 that is configured to output sprays of the pumped fluid for application on a target substrate. It is understood, however, that not all examples are so limited and fluid pumping system 10 can be utilized to pump fluid to locations other than a spray gun 18.
  • Pumping assembly 12 is configured to draw a fluid (e.g., paint, varnish, water, oil, stains, finishes, aggregate, coatings, and solvents, amongst other options) from reservoir 14 and drive the fluid to spray gun 18 under pressure for spraying by spray gun 18.
  • Fluid pumping system 10 can be an airless spray system in that fluid pumping system 10 does not rely on pressurized air to shape or atomize the fluid spray. Instead, pump 24 generates sufficient pressure to cause nozzle 48 to atomize the fluid into the fluid spray.
  • Stand 22 supports other components of pumping assembly 12 relative to a support surface, such as a floor or the ground.
  • Stand 22 is formed by one or more supports 32 that extend vertically relative to assembly body 20 and contact the support surface.
  • Supports 32 can be formed by legs, rails, etc.
  • Supports 32 arc shown as extending from assembly body 20 proximate a front end of assembly body 20 (the side including pump 24) and a rear end of assembly body 20 opposite the front end. It is understood, however, that some examples of stand 22 include supports 32 extending from proximate the rear end of assembly body 20 only.
  • supports 32 can include a vertically-extending portion extending from assembly body 20 and a horizontal portion contacting the support surface.
  • stand 22 can include one or more wheels that contact the ground surface to facilitate moving of pumping assembly 12, such as around a job site.
  • Assembly body 20 is supported by stand 22 vertically above the support surface. Assembly body 20 supports and can enclose one or more components of pumping assembly 12.
  • Pump 24 is supported by assembly body 20. Pump 24 can be removably connected to assembly body 20 such that pump 24 can be removed from assembly body 20 for servicing, storage, replacement, etc.
  • Pump body 34 is connected to assembly body 20, such as by a clamp, support (e.g., ring or flange), interfaced threading, among other mounting options.
  • Piston 36 is at least partially disposed within pump body 34 and is configured to reciprocate along an axis (axis PA in FIG. 1) to pump the fluid from reservoir 14 to the downstream location. It is understood that pump 24 can be of any form suitable for pumping the fluid to spray gun 18 under pressure for spraying. In some examples, pump 24 is a double displacement pump such that pump 24 outputs fluid during both an up or suction stroke of piston 36 and a down or pressure stroke of piston 36.
  • Motor 26 is operatively connected to pump 24 to cause pumping by pump 24.
  • Motor 26 is disposed at least partially within assembly body 20.
  • Motor 26 can be disposed fully within assembly body 20.
  • Motor 26 is an electric motor in the example shown.
  • motor 26 can be a brushed or brushless direct current (DC) motor, an alternating current (AC) induction motor, among other options.
  • Motor 26 is operably connected to piston 36 to drive reciprocation of piston 36 along pump axis PA to cause pumping by pump 24.
  • Pump axis PA can be a vertical axis, among other options.
  • motor 26 and drive 28 cause reciprocation of piston 36.
  • Motor 26 is connected to drive 28 and is configured to provide a rotational output to drive 28.
  • Drive 28 is at least partially disposed within assembly body 20 and is configured to convert the rotational output from motor 26 into a linear reciprocating input to piston 36.
  • Drive 28 can be of any form suitable for converting the rotational output to a linear reciprocating input, such as a cam, scotch yoke, eccentric crank, ball screw, among other options.
  • Controller 30 is operatively connected to motor 26 to control operation of motor 26 and thus control pumping by pump 24.
  • Controller 30 can include one or more processors for carrying out the functions described herein.
  • Controller 30 can be at least partially disposed within assembly body 20 or may be separate from assembly body 20.
  • Controller 30 is operatively connected to other components of fluid pumping system 10 to control operation of the other components of fluid pumping system 10.
  • Controller 30 is configured to store software, implement functionality, and/or process instructions. Controller 30 is configured to perform any of the functions discussed herein, including receiving an output from any sensor referenced herein, detecting any condition or event referenced herein, and controlling operation of any components referenced herein.
  • Controller 30 can be of any suitable configuration for controlling operation of components of fluid pumping system 10 (e.g., motor 26), receiving signals from components of fluid pumping system 10 (e.g., a pressure transducer, a flow sensor, among other options), gathering data, processing data, etc.
  • Controller 30 can include hardware, firmware, and/or stored software, and controller 30 can be entirely or partially mounted on one or more circuit boards. Controller 30 can be of any type suitable for operating in accordance with the techniques described herein.
  • Control circuitry 38 in one example, is configured to implement functionality and/or process instructions.
  • control circuitry 38 can be capable of processing instructions stored in memory 40.
  • Examples of control circuitry 38 can include one or more of a processor, a microprocessor, a controller, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other equivalent discrete or integrated logic circuitry .
  • Control circuitry 38 can be entirely or partially mounted on one or more circuit boards.
  • Memory 40 can be configured to store information before, during, and/or after operation. Memory 40, in some examples, is described as computer-readable storage media. In some examples, a computer-readable storage medium can include a non-transitory medium.
  • non-transitory can indicate that the storage medium is not embodied in a carrier wave or a propagated signal.
  • a non-transitory storage medium can store data that can, over time, change (e.g., in RAM or cache).
  • memory 40 is a temporary memory, meaning that a primary purpose of memory 40 is not long-term storage.
  • Memory 40 in some examples, is described as volatile memory, meaning that memory 40 does not maintain stored contents when power to controller 30 is turned off. Examples of volatile memories can include random access memories (RAM), dynamic random access memories (DRAM), static random access memories (SRAM), and other forms of volatile memories.
  • RAM random access memories
  • DRAM dynamic random access memories
  • SRAM static random access memories
  • memory 40 is used to store program instructions for execution by control circuitry 38.
  • Memory 40 in one example, is used by software or applications to temporarily store information during program execution. Memory 40 can be configured to store larger amounts of information than volatile memory. Memory 40 can further be configured for longterm storage of information. In some examples, memory 40 includes non-volatile storage elements. Examples of such non-volatile storage elements can include magnetic hard discs, optical discs, flash memories, or forms of electrically programmable memories (EPROM) or electrically erasable and programmable (EEPROM) memories.
  • EPROM electrically programmable memories
  • EEPROM electrically erasable and programmable
  • User interface 42 is configured to receive inputs from a user to provide to controller 30 and/or provide outputs to the user.
  • User interface 42 can be any graphical and/or mechanical interface that enables user interaction with controller 30.
  • user interface 42 can implement a graphical user interface displayed at a display device of user interface 42 for presenting information to and/or receiving input from a user.
  • User interface 42 can include graphical navigation and control elements, such as graphical buttons or other graphical control elements presented at the display device.
  • User interface 42 in some examples, includes physical navigation and control elements, such as physically actuated buttons or other physical navigation and control elements.
  • user interface 42 can be or include a dial, slider, one or more buttons, etc.
  • user interface 42 can include any input and/or output devices and control elements that can enable user interaction with controller 30.
  • user interface 42 is configured to receive an output setting from a user.
  • the output setting sets a target output parameter for the fluid output by fluid pumping assembly, such as a target pressure or a target flow rate, among other options.
  • User interface 42 can be disposed on or form a portion of an exterior of assembly body 20.
  • Transducer 50 is configured to provide information regarding one or more parameters of the fluid output by pumping assembly 12.
  • transducer 50 can be configured as a pressure sensor configured to provide pressure information to controller 30
  • transducer 50 can be a flow sensor configured to provide flow rate information to controller 30
  • transducer 50 can include both pressure and flow sensing elements to provide both pressure and flow rate information to controller 30, among other options.
  • Transducer 50 can also be referred to as a sensor.
  • Motor sensor 51 is configured to provide information regarding one or more operating parameters of the motor 26 to controller 30.
  • motor sensor 51 can be a speed sensor configured to generate information regarding the rotational speed of a rotor of the motor 26.
  • motor sensor 51 can be one or more hall effect sensors, an encoder, etc.
  • Spray gun 18 is configured to emit the spray fluid as an atomized fluid spray through nozzle 48.
  • Trigger 46 is operatively connected to a valve (not shown) within spray gun 18 to open and close the flowpath through nozzle 48.
  • the user can grasp gun handle 44 with a single hand and manipulate the orientation of spray gun 18 to aim spray gun 18.
  • the user can actuate trigger 46 with the hand grasping gun handle 44 to control spraying by spray gun 18.
  • controller 30 provides commands to motor 26 to cause operation of motor 26.
  • controller 30 can command motor 26 to operate to cause pump 24 to displace fluid from reservoir 14 and through supply line 16 based on an input from transducer 50 indicating that pumping is required.
  • transducer 50 can provide pressure information indicating a drop in fluid pressure, indicative of spray gun 18 being actuated to output the fluid.
  • FIG. 2 is an isometric view of pumping assembly 12.
  • Assembly body 20, stand 22, pump 24, suction assembly 52, control assembly 54, and power supply 56 includes pump support 58, housing 60, and assembly handle 62.
  • Stand 22 includes supports 32.
  • Pump body 34 and pump mount 64 of pump 24 are shown.
  • Suction assembly 52 includes pump connector 66, inlet tube 68, and hose 70.
  • Pumping assembly 12 is configured to draw fluid from a reservoir (e.g., reservoir 14 (FIG. 1)) and drive the fluid to a downstream location (e.g., spray gun 18 (FIG. 1)) under pressure.
  • Assembly body 20 encloses various other components of pumping assembly 12 and can support various components of pumping assembly 12.
  • Housing 60 forms at least a portion of the exterior of pumping assembly 12.
  • Motor 26 and drive 28 are each at least partially disposed within housing 60.
  • Assembly handle 62 projects from a top side of housing 60.
  • Assembly handle 62 can, in some examples, be connected to housing 60.
  • Assembly handle 62 can, in some examples, be connected to a frame disposed at least partially within housing 60.
  • Assembly handle 62 provides a location for a user to interface with pumping assembly 12 to move pumping assembly 12 between locations, such as around a job site. The user can grasp assembly handle 62 to pick up and carry pumping assembly 12.
  • Pump support 58 is configured to interface with pump 24 to support pump 24 on assembly body 20.
  • pump support 58 can be fully or partially formed by a portion of a frame of the assembly body 20, the frame at least partially disposed within housing 60.
  • a portion of assembly body 20 extends into a gap formed by pump mount 64 of the pump 24 to support the pump 24.
  • the portion of the assembly body 20 that extends into the gap can be considered to form the pump support 58.
  • the pump support 58 can be considered to form or can include a flange that extends into the gap to support the pump 24.
  • Pump mount 64 is configured to interface with pump support 58 to mount pump 24 to assembly body 20.
  • pump mount 64 can be formed by a pair of rings that define a gap therebetween with the gap configured to receive a portion of the pump support 58 to mount pump 24 on assembly body 20.
  • Pump 24 is mounted to assembly body 20 and to drive 28.
  • the piston 36 of pump 24 is connected to drive 28 to be reciprocated by the drive 28.
  • Pump body 34 of pump 24 is connected to assembly body 20 to be supported by assembly body 20.
  • Pump 24 can be considered to be mounted at a static interface and a dynamic interface, the static interface between pump mount 64 and assembly body 20 and the dynamic interface between piston 36 and drive 28.
  • Control assembly 54 is supported by assembly body 20. Control assembly 54 is disposed outside of housing 60. Control assembly 54 is fluidly connected to pump 24 to receive the fluid output by pump 24. Control assembly 54 can house a filter among other options. The filter can filter out contaminants from the fluid prior to being pumped to the downstream location. An output hose (not shown) extends between an outlet of pump 24 and an inlet of control assembly 54. Control assembly 54 is configured to control output of the fluid from pumping assembly 12. For example, control assembly 54 can be placed in a priming state in which fluid provided to control assembly 54 is output back to reservoir 14 during priming of pump 24. Control assembly 54 can be placed in an output state in which the fluid is output through outlet fitting 72 to the supply line (e.g., supply line 16) to be provided to the downstream location, such as for spraying.
  • supply line e.g., supply line 16
  • Suction assembly 52 is fluidly connected to pump 24.
  • An end of suction assembly 52 opposite the end connected to pump 24 is configured to extend into the reservoir 14 such that the fluid is drawn into the suction assembly 52 from reservoir 14 and provided to pump 24.
  • Pump connector 66 is connected to pump body 34 to connect suction assembly 52 to pump 24.
  • pump connector 66 can be a threaded connector configured to threadedly connect suction assembly 52 with pump body 34.
  • Inlet tube 68 extends between pump 24 and hose 70.
  • Hose 70 extends from inlet tube 68 and is configured to provide fluid flow to inlet tube 68.
  • Hose 70 can be formed as a flexible hose.
  • Inlet tube 68 can be rigid.
  • the suction assembly 52 can extend vertically downward from pump 24 and into a reservoir 14 disposed directly vertically below the pump 24.
  • the suction assembly 52 can include a rigid body and may not include inlet tube 68 and a flexible hose 70.
  • Stand 22 supports other components of pumping assembly 12 on the support surface.
  • Supports 32 extend vertically downward below the bottom end of pump 24 and interface with the support surface.
  • the supports 32 arc formed as a plurality of legs.
  • stand 22 includes four legs, though it is understood that other numbers of legs arc possible.
  • Power supply 56 is configured to provide electrical power to electrically powered components of pumping assembly 12, such as motor 26 and controller 30.
  • power supply 56 is formed as a power cord that is configured to plug into a wall socket. It is understood, however, that is various other examples the power supply 56 can be formed by one or more batteries. For example, the one or more batteries can be removable and rechargeable.
  • FIG. 3A is an isometric view of pump 24.
  • FIG. 3B is a cross-sectional view of pump 24 showing pump 24 connected to suction assembly 52.
  • FIG. 3C is a cross-sectional view of pump 24 also showing a portion of suction assembly 52 exploded away from pump 24.
  • FIGS. 3A-3C are discussed together.
  • Pump 24 includes pump body 34, piston 36, pump mount 64, check valve 74a, check valve 74b, throat seal 76, and piston seal 78.
  • Pump body 34 includes intake housing 80, outlet housing 82, and pump cap 84.
  • Pump inlet 86 is formed in intake housing 80 and pump outlet 88 is formed in outlet housing 82. It is understood that outlet housing 82 can also be referred to as a cylinder.
  • Pump body 34 further includes seal grooves 90, connector seal groove 92, exterior threading 94, and interior threading 96. Pump body 34 further includes upper threading 98 and lower threading 100.
  • Piston 36 includes piston rod 102, retainer 104, piston cap 106, piston inlet 108, and piston outlet 110. Piston cap 106 includes neck 112 and head 114.
  • Pump mount 64 includes upper ring 116 and lower ring 118.
  • Check valve 74a includes cage 120, ball 122a, and seat 124a.
  • Check valve 74b includes ball 122b and seat 124b.
  • Pump connector 66, inlet tube 68, and hose 70 of suction assembly 52 are shown. Pump connector 66 includes connector threading 126.
  • Pump 24 is configured to intake fluid through pump inlet 86 and output the fluid under pressure through pump outlet 88.
  • pump 24 is a double displacement pump such that pump 24 is configured to output the fluid during both an upstroke of piston 36 (e.g., in axial direction ADI) and a downstroke of piston 36 (e.g., in axial direction AD2).
  • Intake housing 80 is connected to outlet housing 82 to form a main portion of pump body 34. Intake housing 80 and outlet housing 82 form fluid-handling portions of pump body 34.
  • intake housing 80 is connected to outlet housing 82 by interior threading of intake housing 80 interfacing with lower threading 100 of outlet housing 82.
  • at least a portion of outlet housing 82 extends into intake housing 80 to connect outlet housing 82 to intake housing 80.
  • intake housing 80 and outlet housing 82 are connected by a threaded interface.
  • the lower threading 100 is formed on the exterior of outlet housing 82 such that the lower threading 100 can be considered to form exterior threads on outlet housing 82.
  • outlet housing 82 extends into intake housing 80 with outlet housing 82 and intake housing 80 connected together.
  • Pump chamber 128 is disposed within pump body 34. Pump chamber 128 is divided into an upstream chamber 130 and a downstream chamber 132 by piston 36. During operation, fluid is initially drawn into upstream chamber 130 through pump inlet 86 during an upstroke of pump 24. Fluid within downstream chamber 132 is output from pump 24 through pump outlet 88 during the upstroke. The piston 36 changes over and moves through a downstroke, during which fluid in upstream chamber 130 is driven to downstream chamber 132 through the flowpath in piston 36 and during which fluid in downstream chamber 132 is also outlet through pump outlet 88.
  • Pump cap 84 is connected to outlet housing 82.
  • pump cap 84 can be connected to outlet housing 82 by a threaded interface formed therebetween.
  • Pump cap 84 is configured to retain throat seal 76 within pump body 34.
  • Piston 36 is at least partially disposed within pump body 34. In the example shown, a portion of piston 36 extends out of pump body 34 such that at least a portion of piston 36 is not radially overlapped by pump body 34.
  • the piston 36 is at least partially disposed in outlet housing 82.
  • Piston rod 102 is at least partially disposed in pump body 34 and extends out of pump body 34 in the example shown.
  • Piston cap 106 is formed at a first end of piston rod 102. Piston cap 106 is configured to interface with drive 28 to receive the reciprocating driving force from drive 28.
  • piston cap 106 includes neck 112 that extends from piston rod 102 and head 114 disposed at an opposite side of neck 112 from piston rod 102.
  • neck 112 is narrower than head 114 and piston rod 102.
  • Head 114 is wider than neck 112.
  • a diameter of neck 112 can be less than a diameter of head 114 and the diameter of neck 112 can be less than a diameter of piston rod 102, such as at shoulder 134.
  • Piston cap 106 can extend into a connecting slot in a driving link of the drive 28, such as disclosed in U.S. Pat. No. 10,077,771 , assigned to Graco Minnesota Inc., the disclosure of which is hereby incorporated by reference in its entirety.
  • piston cap 106 is monolithically formed with piston rod 102, though it is understood that not all examples are so limited.
  • piston cap 106 can be formed separately from and connected to piston rod 102, such as by a shank extending from one of piston cap 106 and piston rod 102 extending into a socket formed on the other one of piston cap 106 and piston rod 102.
  • a shank and socket connection can be formed by a threaded interface therebetween.
  • Retainer 104 is mounted to piston rod 102. Retainer 104 extends into piston rod 102 through a second end of piston rod 102 disposed opposite the first end that piston cap 106 extends from. Retainer 104 is connected to piston rod 102, such as by a threaded interface between an exterior of retainer 104 and an interior of piston rod 102. Retainer 104 can retain piston seal 78 on piston 36.
  • Piston inlet 108 is formed through retainer 104.
  • the piston 36 is configured to intake the pumped fluid through piston inlet 108.
  • Piston inlet 108 can be disposed coaxially with piston rod 102 on pump axis PA.
  • Piston outlet 110 is formed through piston 36 and provides fluid communication between the flowpath within piston 36 and the downstream chamber 132. Piston outlet 110 can extend radially. In the example shown, piston outlet 110 is formed through the wall of piston rod 102 to provide fluid communication between the flowpath in piston 36 and the downstream chamber 132.
  • Throat seal 76 is disposed within pump body 34. Throat seal 76 is disposed between and interfaces with piston 36 and pump body 34 to provide a sealing interface therebetween. In the example shown, throat seal 76 interfaces with piston rod 102 and outlet housing 82. Throat seal 76 is retained between a shoulder formed in outlet housing 82 and pump cap 84. Throat seal 76 can be formed by a stack of sealing rings, which can also be referred to as packing rings. In the example shown, throat seal 76 forms a static sealing interface with pump body 34 and forms a dynamic sealing interface with piston 36.
  • Piston seal 78 is disposed within pump body 34. Piston seal 78 is disposed between and interfaces with piston 36 and pump body 34 to provide a sealing interface therebetween. In the example shown, piston seal 78 interfaces with piston rod 102 and outlet housing 82. Piston seal 78 is retained between a shoulder formed on piston rod 102 and a projecting portion of retainer 104. Piston seal 78 can be formed by a stack of sealing rings, which can also be referred to as packing rings. In the example shown, piston seal 78 forms a static scaling interface with piston 36 and forms a dynamic sealing interface with pump body 34.
  • Check valve 74a is disposed within pump body 34.
  • Check valve 74a is configured to regulate flow from suction hose 70 to fluid chamber 128.
  • check valve 74a is configured to regulate flow from suction hose 70 and into upstream fluid chamber 128.
  • the check valve 74a is disposed inside of the inlet housing 80 and outside of the outlet housing 82.
  • Cage 120 is disposed within pump body 34.
  • cage 120 is retained between outlet housing 82 and intake housing 80.
  • Cage 120 limits displacement of ball 122a in downstream direction ADI.
  • Ball 122a is disposed within pump body 34.
  • Ball 122a is disposed within inlet housing 80 in this example.
  • Ball 122a is at least partially disposed within cage 120.
  • Seat 124a is disposed within pump body 34.
  • Seat 124a is disposed within intake housing 80 in the example shown.
  • Ball 122a is engaged with seat 124a with check valve 74a in a closed state and ball 122a is disengaged from seat 124a with check valve 74a in an open state.
  • Check valve 74b is disposed within pump body 34.
  • Check valve 74b is disposed within and rides with piston 36.
  • Check valve 74b is configured to regulate flow from upstream fluid chamber 130 to downstream fluid chamber 132.
  • a portion of piston rod 102 limits displacement of ball 122b in downstream direction ADI.
  • Ball 122b is disposed within pump body 34.
  • Ball 122b is at least disposed within piston 36.
  • Seat 124b is disposed within pump body 34.
  • Seat 124b is disposed within piston 36.
  • Seat 124b can be formed by or supported by retainer 104.
  • Ball 122b is engaged with seat 124b with check valve 74b in a closed state and ball 122b is disengaged from seat 124b with check valve 74b in an open state.
  • Pump mount 64 is disposed on pump body 34.
  • Pump mount 64 can, in some examples, be integrally formed with pump body 34.
  • one or both of upper ring 116 and lower ring 118 can be monolithic with other portions of pump body 34, such as monolithic with outlet housing 82.
  • a gap is formed between upper ring 116 and lower ring 118 and the gap is configured to receive a portion of assembly body 20 (e.g., pump support 58) to mount pump 24 to assembly body 20.
  • lower ring 118 is threadedly connected to pump body 34 at upper threading 98.
  • upper ring 116 is threadedly connected to pump body 34 at upper threading 98.
  • pump mount 64 can be formed as a clamp configured to clamp onto assembly body 20.
  • lower ring 1 18 can be rotated about pump body 34 to shift the lower ring 118 axially. Shifting the lower ring 118 can adjust the size of the gap to clamp and unclamp pump 24 from assembly body 20.
  • Seal grooves 90 are formed on an exterior of pump body 34. In the example shown, multiple seal grooves 90a, 90b are formed on the exterior of pump body 34. It is understood, however, that pump 24 can include a single seal groove 90 or more than two seal grooves 90 on the exterior of pump body 34. Seals 136 are disposed in seal grooves 90. Seals 136 can be elastomer seals, such as o-ring seals, among other options. In the example shown, seal 136a is disposed in seal groove 90a and seal 136b is disposed in seal groove 90b. Seal groove 90a is disposed axially between pump inlet 86 and seal groove 90b. Seal groove 90b is disposed axially between seal groove 90a and exterior threading 94.
  • Seals 136 are configured to interface with suction assembly 52 to form a fluid tight seal between pump body 34 and suction assembly 52.
  • seals 136 are configured to interface with an interior surface of inlet tube 68.
  • intake housing 80 extends into receiver 138 of inlet tube 68.
  • the seals 136 interface with an exterior surface of pump body 34 and with an interior surface of inlet tube 68. The sealing interface between pump body 34 and suction assembly 52 prevents fluid leaking therebetween.
  • At least one of seal grooves 90 is disposed to radially overlap with check valve 74a.
  • the seal groove 90 can directly radially overlap with check valve 74a.
  • at least one of seal grooves 90 is disposed coplanar with check valve 74a such that a plane orthogonal to pump axis PA extends through each of check valve 74a and at least one of seal grooves 90.
  • at least one seal groove 90 radially overlaps with seat 124a of check valve 74a.
  • at least one seal 136 radially overlaps with seat 124a in the example shown.
  • At least one seal groove 90 is disposed coplanar with the first check valve 74a on a plane normal to the axis PA.
  • one of seal grooves 90 radially overlaps with the check valve 74a and another one of seal grooves 90 does not radially overlap with the check valve 74a.
  • the upper seal groove 90b does radially overlap with check valve 74a while the lower seal groove 90a does not radially overlap with the check valve 74a.
  • the seal grooves 90 are disposed such that the outlet housing 82 axially overlaps with the seal grooves 90 relative to pump axis PA.
  • the outlet housing 82 can axially overlap with seals 136 relative to pump axis PA.
  • the inlet housing 80 includes threaded portion 172 and sealing portion 174.
  • the one or more seal grooves 90 arc disposed on the scaling portion 174.
  • the sealing portion 174 is narrower than the threaded portion 172.
  • Annular shoulder 176 is disposed between the threaded portion 172 and the sealing portion 174.
  • the annular shoulder 176 can define a transition in diameter between the threaded portion 172 and sealing portion 174.
  • the annular shoulder 176 can directly radially overlap with check valve 74a.
  • the annular shoulder 176 can be disposed at a right angle.
  • the annular shoulder 176 can be disposed at a right angle relative to the threaded portion 172 and/or the sealing portion 174.
  • the pump connector 66 can interface with the threaded portion 172.
  • the pump connector 66 can threadedly interface with the threaded portion 172 to connect the pump connector 66 to the inlet housing 80.
  • the pump connector 66 can form at least one seal with the sealing portion 174.
  • Pump inlet 86 is an opening in intake housing 80 disposed on pump axis PA through which the pumped fluid can enter into the pump body 34.
  • Intake flowpath 140 extends between pump inlet 86 and check valve 74a.
  • Intake flowpath 140 includes a sloped portion 142 and an axial portion 144.
  • the sloped portion 142 extends between the pump inlet 86 and the axial portion 144.
  • the sloped portion 142 is sloped inwards towards the pump axis PA along the direction of flow (e.g., in axial direction ADI).
  • the sloped portion 142 provides for smooth fluid flow into axial portion 144 and to check valve 74a by guiding the fluid radially inwards towards pump axis PA without having a sharp turn in the flowpath.
  • the sloped portion 142 further facilitates insertion of a finger of the user through intake flowpath 140 to contact and unseat ball 122a in the event ball 122a becomes stuck.
  • the axial portion 144 extends between the sloped portion 142 and the check valve 74a. Fluid entering into pump body 34 flows through pump inlet 86 and along sloped portion 142 to axial portion 144. The fluid flows through axial portion 144 and then through check valve 74a into fluid chamber 128. Having exterior seal grooves 90 and seals 136 facilitates intake flowpath 140 having sloped portion 142 for guiding the fluid. A configuration with seals sealing within an intake flowpath upstream of check valve 74a needs flat, axially extending surfaces for the seals to engage with to provide desired sealing. The exterior seal grooves 90 facilitate a more compact and axially squat intake housing 80, requiring less material to form inlet housing and thereby reducing manufacturing costs.
  • the exterior seal grooves 90 allow the pump inlet 86 to be placed axially closer to check valve 74a than examples in which seals interface with an interior surface of the intake housing 80.
  • an axial length AL1 of the intake flowpath 140 between pump inlet 86 and check valve 74a is less than an axial length AL2 of the check valve 74a.
  • the axial length AL1 of the intake flowpath 140 between pump inlet 86 and check valve 74a is less than a diameter of ball 122a.
  • the axial length AL3 of the intake housing 80 is less than the axial length AL4 of the outlet housing 82.
  • the axial length of portions of the intake housing 80 that do not include threading is less than the axial length of the portions of intake housing 80 that do include threading.
  • the axial length AL3 of the intake housing 80 can be less than about 60% of the axial length AL4 of the outlet housing 82.
  • the compact configuration of the intake housing 80 relative to the outlet housing 82 provides for an overall more compact pump body 34, requiring less material to manufacture and reducing costs and allowing for pump 24 to be placed closer to the ground surface, which allows for a more vertically compact pumping assembly 12.
  • Suction assembly 52 is connected to pump body 34 to form the fluid connection between reservoir 14 and pump 24.
  • Pump connector 66 interfaces with pump body 34 to secure suction assembly 52 to pump body 34.
  • Pump connector 66 directly radially surrounds the at least one seal groove 90 when the pump connector 66 is mounted to the pump body 34.
  • connector threading 126 interfaces with exterior threading 94 to connect suction assembly 52 to pump body 34. While suction assembly 52 is threadedly connected to pump body 34 in the example shown, it is understood that not all examples are so limited.
  • Inlet tube 68 extends between and connects hose 70 and pump connector 66.
  • pump connector 66 is maintained at an end of inlet tube 68 even when suction assembly 52 is dismounted from pump 24.
  • Retaining clip 160 is mounted to inlet tube 68.
  • Pump connector 66 rides on bearings 162.
  • the retaining clip 160 prevents bearings 162 and pump connector 66 from displacing along inlet tube 68, providing for easier installation as the user is not required to shift the pump connector 66 along a length of inlet tube 68 in the event that the pump connector 66 has fallen along the length. Maintaining pump connector 66 in position on inlet tube 68 also prevents inadvertent jamming of pump connector 66 on inlet tube 68, such as at angled portions of the exterior of inlet tube 68.
  • inlet tube 68 includes hose connector 146, upstream elbow 148, horizontal portion 150, downstream elbow 152, and vertical portion 154.
  • Receiver 138 is disposed at a distal end of vertical portion 154. Shelf 158 forms a base of receiver 138 and axially overlaps with intake housing 80.
  • Hose connector 146 is configured to interface with hose 70 to fluidly connect hose 70 and inlet tube 68. In the example shown, hose connector 146 extends into hose 70 to interface with hose 70.
  • Hose connector 146 is disposed at an angle between the pump axis PA and the connector axis CA. For example, hose connector 146 can be disposed at a 45 -degree angle relative to pump axis PA, though it is understood that other angles are possible.
  • Coupler 156 interfaces with an exterior of hose 70 to connect hose 70 to inlet tube 68.
  • Upstream elbow 148 extends between and connects hose connector 146 and horizontal portion 150.
  • Horizontal portion 150 extends between and connects upstream elbow 148 and downstream elbow 152.
  • the horizontal portion represents a vertically lowest portion of the fluid flowpath through inlet tube 68 upstream of pump 24.
  • the horizontal portion 150 can form a vertically lowest portion of the flowpath upstream of pump 24, it being understood that the flowpath upstream of pump is within suction assembly 52 and not simply the fluid stored within reservoir 14.
  • at least a portion of the horizontal portion 150 is directly below the pump 24.
  • At least a portion of the horizontal portion 150 axially overlaps with the pump body 24 relative to pump axis PA.
  • At least a portion of the horizontal portion 150 axially overlaps with intake housing 80 relative to pump axis PA.
  • At least a portion of the horizontal portion 150 axially overlaps with outlet housing 82 relative to pump axis PA.
  • Downstream elbow 152 reorients the flowpath from the horizontal flow along connector axis CA within horizontal portion 150 to vertical flow along pump axis PA as the flow approaches pump inlet 86.
  • the flow within vertical portion 154 is along pump axis PA.
  • the connector axis CA along horizontal portion 150 can be disposed orthogonally with the pump axis PA along which piston 36 reciprocates.
  • Inlet tube 68 having horizontal portion 150 facilitates a more compact and squat pumping assembly 12.
  • Previous inlet connectors include a tube that is curved through the vertically lowest portion of the inlet connector, such as a J-shaped tube.
  • the horizontal portion 150 places the flow through inlet tube 68 at a vertically lowest portion of inlet tube 68 closer to pump inlet 86, allowing for more efficient flow to pump 24 from suction assembly 52.
  • the horizontal portion 150 also provides a larger volume for material to settle out than a curved J-tube, increasing the operational life of suction assembly 52 and preventing clogging.
  • Receiver 138 is disposed at an end of inlet tube 68 opposite hose connector 146. Receiver 138 is formed as an increased diameter portion of inlet tube 68. Receiver 138 is configured such that a portion of pump body 34 extends into receiver 138. Receiver 138 and an end of intake housing 80 through which pump inlet 86 is formed radially overlap with each other. A line extending orthogonal from pump axis PA passes first through intake housing 80 and then through receiver 138. In the example shown, pump body 34 is received within receiver 138 such that a portion of receiver 138 radially overlaps with a portion of check valve 74a. In the example shown, a portion of inlet tube 68 radially overlaps with seat 124a.
  • inlet tube 68 radially overlaps with ball 122a. In the example shown, a portion of inlet tube 68 radially overlaps with cage 120. Such radial overlaps are possible due to the seal grooves 90 and seals 136 being disposed on an exterior of pump body 34 and facilitate a more compact pump 24 and suction tube assembly 52.
  • the connecting interface between suction assembly 52 and pump body 34 is disposed at least partially vertically above check valve 74a.
  • the connecting interface between suction assembly 52 and pump body 34 is disposed at least partially axially between check valve 74a and check valve 74b. At least a portion of the connecting interface between suction assembly 52 and pump body 34 can radially overlap with at least a portion of check valve 74a. In the example shown, at least a portion of the connecting interface between suction assembly 52 and pump body 34 radially overlaps with outlet housing 82.
  • exterior threading 94 extends vertically above check valve 74a. At least a portion of the exterior threading 94 is disposed axially between check valve 74a and check valve 74b. In the example shown, at least a portion of the exterior threading 94 radially overlaps with check valve 74a. In the example shown, at least a portion of the exterior threading 94 radially overlaps with outlet housing 82.
  • the pump body 34 includes exterior threading 94 that directly radially surrounds the first check valve 74a. Positioning exterior threading 94 radially overlapping with or at least partially vertically above check valve 74a provides for a compact configuration of pump 24 as compared to pumps in which suction tube extends into pump body 34. The threading of pump 24 that interfaces with suction assembly 52 cannot be positioned to radially overlap with or be vertically above check valve 74a in prior pumps in which the suction tube extends into the inlet housing of the prior pump.
  • Connector seal groove 92 extends into an exterior of pump body 34.
  • connector seal groove 92 is formed in an exterior of intake housing 80.
  • Connector seal groove 92 is disposed on an opposite axial side of exterior threading 94 from seal grooves 90.
  • Connector seal groove 92 is disposed axially between check valve 74a and check valve 74b.
  • Connector seal groove 92 is configured to receive connector seal 164.
  • Connector seal 164 can be any type of seal suitable for forming a seal between pump body 34 and pump connector 66.
  • connector seal 164 can be an elastomer seal, such as an o-ring.
  • the diameter of connector seal groove 92 is greater than the diameter of seal grooves 90.
  • the connector seal 164 is configured to frictionally interface with pump connector 66 to prevent unthreading of pump connector 66 during operation.
  • Pump body 34 has width W1 at exterior threading 94.
  • the width W 1 can be a diameter.
  • the pump body 34 has width W2 at seal grooves 90.
  • the width W2 can be a diameter.
  • the width W1 of pump body 34 at exterior threading is greater than the width W2 of pump body 34 at seal grooves 90.
  • seal grooves 90 formed on the exterior of pump body 34 provides for a compact pump configuration.
  • the exterior seal grooves 90 can be positioned to radially overlap with check valve 74a, which positioning is not possible if the sealing interface between pump 24 and suction assembly 52 is disposed between an interior surface of pump body 34 and an exterior surface of inlet tube 68.
  • positioning seal grooves 90 on an exterior of pump body 34 allows for use of seals 136 having a larger outer diameter than seals positioned to interface with an interior surface of pump body 34.
  • the larger outer diameter provides for a greater surface area that spreads loads experienced by the seals 136 across a larger area, resulting in less stress on the seals 136.
  • the seals 136 being less stressed provides for a longer seal life, requiring less frequent maintenance or replacement and decreasing material cost.
  • Positioning seal grooves 90 on the exterior of pump body 34 moves the seals 136 outside of the flowpath within pump body 34. Further, positioning the seal grooves 90 to be planar with or radially overlap with the check valve 74a such that the seals 136 are not below the check valve 74a reduces contamination of the seals 136.
  • Positioning the seal grooves 90 on the exterior of the pump body 34 also provides improved access to check valve 74a.
  • the exterior seal grooves 90 allow for the seals 136 to be positioned higher up on the pump body 34 whereas seals interfacing with the interior surface of pump body 34 are below the check valve 74a.
  • the inlet housing for prior pumps is requires a greater axial length below the check valve 74a to provide sufficient surface area for the seals to interface with the interior surface of pump body 34.
  • Positioning seal grooves 90 and seals 136 on the exterior of pump body 34 allows for a compact configuration of intake housing 80, particularly between pump inlet 86 and check valve 74a.
  • the relatively short flowpath between pump inlet 86 and check valve 74a allows for improved access to check valve 74a.
  • Such a configuration allows for easy access to clean debris out of the check valve 74a without having to disassemble the pump 24. Further, the user can easily access ball 122a, such as with a finger of the user extending through pump inlet 86, to unseat ball 122a in the event the ball 122a becomes stuck. Such a configuration provides for reduced downtime during maintenance, allowing for more efficient pumping and cleaning.
  • the receiver 138 is aligned with intake housing 80 on pump axis PA.
  • Suction assembly 52 is shifted onto pump body 34 such that a seal 136 enters into and interfaces with an interior surface of retainer 104.
  • the seals 136 interfacing with inlet tube 68 provide bearing surfaces for guiding inlet tube 68 onto intake housing 80.
  • the pump connector 66 first interfaces with exterior threading 94 prior to suction assembly 52 being fully mounted. Threading the pump connector 66 onto the exterior threading pulls the suction assembly 52 onto pump body 34 to complete mounting of the suction assembly 52.
  • the seals 136 can help pilot the inlet tube 68 onto pump body 34 and then the threaded interface between pump connector 66 and intake housing 80 can fully pull the suction assembly 52 onto the pump body 34, providing for simple and easy alignment and mounting.
  • pump connector 66 can interface with a lower surface of housing projections 166 of intake housing 80 with suction assembly 52 fully mounted.
  • the pump connector 66 interfacing with that portion of intake housing 80 prevents overtightening of pump connector 66 and maintains spacing gap 170 between a bottom side of intake housing 80 and shelf 158. Maintaining the spacing gap 170 prevents metal-to -metal contact that could cause undesirable wear.
  • FIG. 4 is an enlarged isometric view showing a connection between suction assembly 52 and pump 24.
  • Pump body 34 of pump 24 is shown. Housing projections 166 of pump body 34 are shown. Housing projections 166 are formed on intake housing 80.
  • Pump connector 66, inlet tube 68, and hose 70 of suction assembly 52 are shown.
  • Pump connector 66 includes connector projections 168.
  • Pump connector 66 is connected to pump body 34 to fluidly connect suction assembly 52 and pump 24, as discussed above.
  • Connector projections 168 extend radially outward from a main body portion of pump connector 66. Connector projections 168 provide grip locations for a user to interface with pump connector 66 and torque pump connector 66 for connecting and disconnecting pump connector 66 with pump body 34.
  • Housing projections 166 extend from an exterior of pump body 34. In the example shown, housing projections 166 extend radially outward from the exterior of intake housing 80. Housing projections 166 provide grip locations for a user to interface with pump body 34. For example, the user can torque housing projections 166 when connecting intake housing 80 to outlet housing 82 or when disconnecting intake housing 80 from outlet housing 82. Housing projections 166 are axially elongate, providing increased surface area for a user to use a tool, such as a hammer, to torque intake housing 80 relative to outlet housing 82. Housing projection 166 can form 40% or more of the axial length of intake housing 80.
  • a full axial length of intake housing 80 exposed on the exterior of pump 24 with suction assembly 52 mounted to pump body 34 can include housing projections 166.
  • connector projections 168 can extend further radially outward than housing projections 166. As such, the distal end of each connector projection 168 can be disposed further radially away from the pump axis PA than the distal end of each housing projection 168.
  • the connector projections 168 extending further radially away from pump axis PA than the housing projections 166 allows the user to access and exert torque on the connector projections 168 even if the gap between adjacent connector projections 168 is axially overlapped by a housing projection 166.
  • a count of the connector projections 168 is greater than a count of the housing projections 166.
  • pump connector 66 includes at least two connector projections 168 for each housing projection 166 of pump body 34.
  • each connector projection 168 has a circumferential width that is less than the circumferential width of the housing projections 166.
  • the greater number of connector projections 168 and smaller circumferential width of the connector projections 168 positions at least one connector projection 168 to axially overlap with the gap disposed between adjacent housing projections 166 with pump connector 66 connected to pump body 34.
  • Such a configuration allows the user to access the connector projections 168 through the gap between adjacent housing projections 166, providing for simpler and easier mounting and dismounting of pump connector 66 on pump body 34.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

L'invention concerne une pompe volumétrique qui comprend un corps de pompe et un piston disposé au moins partiellement dans le corps de pompe, le piston étant conçu pour effectuer un mouvement de va-et-vient sur un axe afin de pomper un fluide. Au moins une rainure d'étanchéité est formée à l'extérieur du corps de pompe. La ou les rainures d'étanchéité sont conçues pour recevoir un joint d'étanchéité qui forme un joint d'étanchéité entre le corps de pompe et un tube d'aspiration qui fournit un fluide à une entrée de pompe de la pompe. Le joint d'étanchéité assure l'étanchéité entre un extérieur du corps de pompe et un intérieur du tube d'aspiration.
PCT/US2024/059536 2023-12-14 2024-12-11 Pompe volumétrique Pending WO2025128683A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202363610262P 2023-12-14 2023-12-14
US63/610,262 2023-12-14

Publications (1)

Publication Number Publication Date
WO2025128683A1 true WO2025128683A1 (fr) 2025-06-19

Family

ID=94216665

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2024/059536 Pending WO2025128683A1 (fr) 2023-12-14 2024-12-11 Pompe volumétrique

Country Status (1)

Country Link
WO (1) WO2025128683A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5456583A (en) * 1994-08-31 1995-10-10 Graco Inc. Liquid pump
EP3187728A2 (fr) * 2015-12-30 2017-07-05 Graco Minnesota Inc. Piston rotatif pour pompes
US10077771B2 (en) 2014-12-30 2018-09-18 Graco Minnesota, Inc. Integral mounting system on axial reciprocating pumps
US10253771B2 (en) * 2014-09-10 2019-04-09 Tritech Industries, Inc. High pressure paint pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5456583A (en) * 1994-08-31 1995-10-10 Graco Inc. Liquid pump
US10253771B2 (en) * 2014-09-10 2019-04-09 Tritech Industries, Inc. High pressure paint pump
US10077771B2 (en) 2014-12-30 2018-09-18 Graco Minnesota, Inc. Integral mounting system on axial reciprocating pumps
EP3187728A2 (fr) * 2015-12-30 2017-07-05 Graco Minnesota Inc. Piston rotatif pour pompes

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