PUMP WITH QUICK CONNECT PUMP HEAD AND PUMP MONITORING AND CONTROL SYSTEMS

Abstract

A pump includes a pump head and a motor assembly including a motor. The motor engages the pump head and actuates the pump head. The pump includes a hand actuatable quick disconnect assembly coupling the pump head to the motor assembly without the need for tools. A pump monitoring system acquires data and information to detect problems and provide information for pump maintenance.

Claims

1. A pump, comprising: a pump head; a motor assembly comprising a motor, wherein the motor engages the pump head and actuates the pump head; a hand actuatable quick disconnect assembly coupling the pump head to the motor assembly.

2. The pump according to claim 1, wherein the motor comprises a drive shaft extending from the motor and engaging the pump head.

3. The pump according to claim 1, wherein the pump comprises a diaphragm pump and wherein the pump head comprises a diaphragm pump head.

4. The pump according to claim 1, further comprising a hand actuatable quick connect motor mounting assembly for mounting the pump to a mounting surface.

5. The pump according to claim 1, wherein the quick disconnect assembly comprises a bayonet type connector assembly.

6. The pump according to claim 1, wherein the quick disconnect assembly comprises a flange mounted to the pump head and a complementary receiver mounted to the motor assembly.

7. The pump according to claim 6, wherein the flange comprises a plurality of radial engagement elements and the receiver comprises a plurality of complementary L-shaped receiving slots configured to receive and retain the engagement elements.

8. The pump according to claim 7, further comprising a locking element for retaining the engagement elements in the receiving slots.

9. The pump according to claim 6, further comprising a locking pin for retaining the flange to the receiver.

10. The pump according to claim 8, further comprising a hand actuatable quick connect motor mounting assembly for mounting the pump to a mounting surface.

11. The pump according to claim 9, wherein the motor mounting assembly comprises a cradle for receiving the motor assembly and a sliding retainer.

12. The pump according to claim 10, wherein the motor assembly comprises retaining screws extending radially outward, each of the retaining screws having a base and a screw head, and wherein the sliding retainer engages the screw heads to secure the motor assembly to the quick connect motor mounting assembly.

13. The pump according to claim 11, wherein the motor mounting assembly and the quick disconnect assembly are positioned in an axially non-overlapping configuration.

14. The pump according to claim 1, wherein the motor assembly comprises a cylindrical housing and the quick disconnect assembly comprises a flange mounted to the pump head, and a complementary receiver mounted to the motor assembly; the flange comprising a plurality of radial engagement elements and the receiver comprising a plurality of complementary annularly extending L-shaped receiving slots configured to receive and retain the engagement elements upon relative rotation between the flange and the receiver.

15. The pump according to claim 1, further comprising a pump monitoring system including a controller to modify pump settings or stop the pump.

16. The pump according to claim 15, wherein the pump monitoring system comprises a display for providing an indication that the pump is running, the pump is failing, or the pump is in a diagnostic mode.

17. The pump according to claim 1, further comprising a pump monitoring system, wherein the pump monitoring system comprises a moisture sensor in communication with the controller for sensing fluid in the motor assembly.

18. The pump according to claim 1, further comprising a pump monitoring system mounted on the pump and including a user interface and display.

19. The pump according to claim 1, further comprising a pump monitoring system including a controller, and a housing having an arcing mounting surface configured to mount on an exterior of the mounted on an exterior of the motor assembly.

20. The pump according to claim 1, wherein the pump monitoring system housing comprises a plurality of cooling fins extending radially outward.

21. A method of manually maintaining a pump, the pump comprising a pump head, a motor assembly including a motor actuating the pump head, a first quick connect assembly coupling the pump head to the pump housing; a second quick disconnect assembly retaining the motor assembly to a mounting surface; the method comprising: responding to a triggering event; removing the pump head from the motor assembly by manually decoupling the first quick disconnect assembly free of tools, removing the motor assembly by manually decoupling the second quick disconnect assembly free of tools, inspecting the motor and/or the pump head; following inspection, remounting the motor if the motor passes inspection, or if the motor fails inspection, replacing the motor with a different motor; following inspection, reconnecting the pump head if the pump head passes inspection, or if the pump head fails inspection, replacing the pump head with a different pump head.

22. The method according to claim 21, wherein the triggering event comprises scheduled maintenance.

23. The method according to claim 21, wherein the pump comprises a pump monitoring system and the triggering event comprises an indication from the pump monitoring system.

24. The method according to claim 23, further comprising resetting the pump monitoring system.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Referring now to the drawings, wherein like reference numerals and letters indicate corresponding structure throughout the several views:

[0036] FIG. 1 is a perspective view of a pump according to the principles of the present invention;

[0037] FIG. 2 is a partially exploded perspective view of the pump in FIG. 1;

[0038] FIG. 3 is a partially exploded side view of the pump shown in FIG. 1;

[0039] FIG. 4 is a partially exploded perspective view of the motor and quick connect assembly for the pump shown in FIG. 1;

[0040] FIG. 5 is a perspective view of the pump head with a flange for the pump shown in FIG. 1;

[0041] FIG. 6 is an end view of the pump head shown in FIG. 5;

[0042] FIG. 7 is a side view of the pump head shown in FIG. 5;

[0043] FIG. 8 is an end view of the motor, receiver and flange for the pump shown in FIG. 1 with the quick connect components in a pump head locked position;

[0044] FIG. 9 is an end view of the motor, receiver and flange for the pump shown in FIG. 1 with the quick connect components in a pump head unlocked position;

[0045] FIG. 10 is an end view of the motor, receiver and flange for the pump shown in FIG. 1 with the quick connect components in a pump head decoupled position;

[0046] FIG. 11 is a detail view of the receiver;

[0047] FIG. 12 is a detail view of the flange;

[0048] FIG. 13 is a detail view of a locking mechanism for the quick connect assembly with a locking pin engaged and the quick connect assembly locked;

[0049] FIG. 14 is a detail view of the locking mechanism shown in FIG. 13 with the locking pin disengaged and the quick connect assembly unlocked;

[0050] FIG. 15 is a detail view of the locking mechanism shown in FIG. 13 with the locking pin locked out and the quick connect assembly unlocked;

[0051] FIG. 16 is a perspective view of the motor with a quick connect pump mounting assembly with portions broken away for clarity;

[0052] FIG. 17 is an end view of the motor with a quick connect pump mounting assembly shown in FIG. 16 with the motor attached;

[0053] FIG. 18 is an end view of the motor with a quick connect pump mounting assembly shown in FIG. 16 with the motor detached;

[0054] FIG. 19 is a side view of the motor with a quick connect pump mounting assembly shown in FIG. 16 with the retainer locked;

[0055] FIG. 20 is a side view of the motor with a quick connect pump mounting assembly shown in FIG. 16 with the retainer unlocked;

[0056] FIG. 21 is a perspective view of a modular monitoring system for the pump shown in FIG. 1;

[0057] FIG. 22 is a diagrammatic view of the modular monitoring system shown in FIG. 21;

[0058] FIG. 23 is a front elevational view of a processor/controller for the modular monitoring system shown in FIG. 21; and

[0059] FIG. 24 is a diagrammatic view of the processor/controller shown in FIG. 23.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0060] Referring now to the drawings and in particular to FIGS. 1-3, there is shown a pump, generally designated (100). In the embodiment shown, the pump (100) is a diaphragm pump and includes a motor assembly (104) and a pump head (102). It can be appreciated that other types of pumps having a pump head connecting to a motor and driven by a motor are also foreseen according to the present invention. The motor assembly (104) includes an outer generally cylindrical housing, and the motor is typically an electrical motor and includes a cord or wiring (190). A drive shaft (106) extends from the motor and is driven by the electric motor (104) to engage and drive the pumping elements of the pump head (102). According to the present invention, a first quick connect assembly (108) allows for simple and quick connection and disconnection of the pump head (102) to the motor assembly (104) without the use of any tools, as explained hereinafter. The ability for a worker to manually remove and mount the motor (104) and the pump head (102) to one another by hand without the need for tools provides for simple and quick maintenance. The ability to mount and remove without tools also allows for mounting in positions and locations that might be difficult to access if tools are needed to engage mounting hardware. Moreover, during maintenance, the motor assembly (104) and the pump head assembly (102) may be quickly inspected and interchanged if there are problems so that down time for maintenance and repairs is substantially reduced with the quick connect assembly (108). The pump (100) also includes a second quick connect assembly (150) for mounting the pump to a mounting surface.

[0061] The pump head (102) includes a pump head upper housing assembly (120) and a pump head lower housing assembly (122). The pump head upper housing assembly (120) generally retains the various valves and flow components. In the embodiment shown, the pump (100) is a wobble plate type diaphragm pump including five chambers. It can be appreciated that other types of pumps or diaphragm pumps might be utilized. Moreover, such wobble plate type pumps may have a different number of chambers, such as three chambers. A molded diaphragm (130) mounts to the lower housing assembly (122) and includes five distinct portions that are engaged by valves in the head (102) as the wobble plate rotates, as is well known in the art. The pump head's major components are generally connected by a plurality of bolts (192). The upper housing assembly (120) of the pump head assembly (102) also includes a fluid inlet port (124) and a fluid outlet port (126). The inlet port (124) and the outlet port (126) may include mounting portions, such as threaded connections or other types of connections or adapters to mount to incoming and outgoing fluid lines. It can be appreciated that the pump (100) of the present invention completely contains the fluid to be pumped within the pump head (102) and fluid is kept out of the motor assembly (104). As shown in FIGS. 5 and 8-10, a receiving slot (132) receives the drive shaft (106) and provides for driving the valves and wobble plate and other components of the pump head to produce a pumping action.

[0062] Referring now to FIG. 4 as well as other figures, the quick connect assembly (108) includes a quick connect receiver (110) that couples to a flange (140). The receiver, or collar, (110) mounts to an end of the motor assembly (104) against the outer housing of the motor assembly. The quick connect receiver (110) of the motor assembly (104) couples to the complementary quick connect flange (140) of the head (102) to removably couple the head (102) and the motor assembly (104). As shown in FIGS. 2 and 4, an O-ring type gasket (194) provides for a seal between the receiver (110) and the flange (140). The receiver (110) and the flange (140) are connected by a bayonet type engagement system. However, it can be appreciated that other quick connect systems that do not require tools, such as a threaded assembly or of cam assemblies, might also be utilized. The quick connect flange (140) includes a generally circular outer flange frame (142). Extending radially inward from the frame (142) are male engagement elements (144), as shown in greater detail in FIG. 12. The male engagement elements are shown as substantially rectangular and radially inward protruding raised portions, but other shapes are also foreseen. The quick connect frame (142) includes a pin receiving hole (148A). The hole (148A) receives a quick connect pin or other element that locks the flange (140) to the receiver (110), as explained hereinafter. In the embodiment shown, the flange includes five engagement elements (144) spaced apart and protruding inward to engage five complementary slots of the receiver (110). However, a lesser number or greater number of engagement elements and complementary slots may also be utilized.

[0063] The quick connect receiver (110) is configured to mount to the motor assembly (104) and is complementary to the flange (140). The receiver (110) includes L-shaped slots (112) spaced apart around a periphery of the receiver and configured to receive the complementary male engagement elements (144). As shown in FIG. 11, the slots (112) are L-shaped slots, including a widened slot first arm portion (114) and a slot second arm portion (116) extending annularly from the first portion (114). The slots (112) and engagement elements (144) are complementary shaped and configured so that the engagement element (144) slides into the first arm portion (114) of the corresponding slot (114). The pump head (102) and motor assembly (104) are then rotated relative to one another, thereby also rotating the flange (140) relative to the receiver (110). This rotation moves the engagement elements (144) into the second arm portion (116) of the L-shaped slot (112). The engagement elements (144) and the second slot arm portion (116) have complementary angled surfaces, chamfered surfaces or other complementary portions that engage so that the receiver (110) and the flange (140) cannot be pulled axially apart.

[0064] To maintain the rotational position of the flange (140) relative to the receiver (110), a locking pin (146) is utilized. The locking pin (146) may be spring-loaded or may be a threaded member, such as a thumbscrew type element. The locking pin extends through the hole (148A) of the flange (140) and into the hole (148B) of the receiver (110). When lowered as shown in FIG. 13, the pin (146) is engaged in a fully locked position. Depending on the configuration of the pin, it may be lifted upward, or if threaded, the pin (146) is rotated to raise the pin (146). In the position shown in FIG. 14, the pin (146) is raised, which unlocks the flange (140) and the receiver (110). Moreover, as shown in FIG. 15, the pin (146) may be moved to a locked out position and unlocked so that the pin (146) cannot accidentally re-engage. Therefore, when in such a position, the flange (140) and the receiver (110) may be easily rotated relative to one another and then separated.

[0065] The locking, unlocking, and decoupling and their relative positions are shown in FIGS. 8-10. As shown in FIG. 8, the pin (146) is lowered to engage both the hole (148A) and extend into the hole (148B). This engagement by the pin (146) prevents relative rotation between the flange (140) and the receiver (110). When the pin (146) is lifted, as indicated by the arrow in FIG. 9, the flange (140) and the receiver (110) are unlocked and may be rotated relative to one another. Once the pin (146) has been raised, the flange (140) may be rotated clockwise as shown in FIG. 10, relative to the receiver (110), thereby moving the engagement elements (144) along the slot (112) to the first arm portion (114) of the L-shaped slot (112). When the engagement elements (144) are in the first arm portion (114) of the L-shaped slot (112), the flange (140) may be freely pulled away from the receiver (110). Remounting of the flange (140) to the receiver (110) is easily done by simply reversing the steps so that the engagement elements (144) are moved into the second slot portion (116) of the L-shaped slot (112) and engaged and the pin (146) is lowered to extend into hole (148B) of the receiver (110).

[0066] As shown in FIGS. 16-20, the pump mounting assembly (150) is also a quick connect assembly that allows for easily removing the entire pump (100) from a mounting surface or to other components in a fluid system. The pump mounting assembly (150) includes a cradle (152) with lateral mounting portions (154) extending laterally outward from the cradle (152). The lateral mounting portions may include mounting holes for receiving hardware and mounting the cradle (152) to a surface. The cradle (152) has an arcing surface complementary to the outer cylindrical surface of the pump assembly (104). Retaining screws (118) include a head portion that extends into complementary keyhole shaped orifices (162) of the mounting assembly (150). The pump mounting assembly (150) also includes a sliding retainer (156) actuated by a retainer handle (158). A spring return mechanism (160) provides for maintaining the position of the sliding member (156) relative to the cradle in a locked position. The sliding retainer (156) includes a handle (158) at one end. It can be appreciated that the retainer handle (158) slides with the retainer (156) between a retaining position engaging the heads of the screws (118) and a free position in which the screws (118) are disengaged and may be freely lifted from the mounting assembly (150). The biasing force of the return mechanism (160) is overcome by pulling the handle (158) outward to a free position.

[0067] To mount the motor assembly (104) to the pump mounting assembly (150), the sliding retainer (156) is pulled outward by the handle (158) to the position shown in FIG. 20. The motor assembly (104) is then placed against the cradle (152) with the mounting screws (118) extending through orifices in the cradle and an enlarged portion of the keyhole shaped orifices (162) in the sliding retainer (156). When the motor assembly (150) is correctly positioned, the handle (158) is released, and the return mechanism (160) pulls the sliding retainer inward to the locked position shown in FIG. 19. This motion slides the retainer (156) so that the small portion of the key shaped orifices (162) engage the shaft of the mounting screws and are beneath the head of the screws (118) and therefore retaining the motor assembly (104). To release the motor assembly (104), the handle (158) is pulled outward to move the retainer (156) back to the position of FIG. 20, as indicated by the arrow in FIG. 20.

[0068] It can be appreciated that the quick connect mounting assembly (150) and the quick connect assembly (108) between the pump head (102) and the motor assembly (104) are configured so that they do not interfere with one another. Moreover, it can be appreciated that both mounting mechanisms can be engaged and disengaged manually by hand without the need for any tools. Furthermore, there are no loose screws, bolts, clips, or other retaining hardware that might be lost.

[0069] The present invention also provides for a method of inspecting and maintaining pumps and easily interchanging or replacing the motor (104) and/or the pump head (102) without the need for tools. It can be appreciated that the pump head (102) and/or the motor assembly (104) may incorporate sensors that monitor the performance of the pump (100). Therefore, if problems are indicated, such sensors may detect a general problem with the pump (100) or might detect a problem with the pump head (102) or a problem with the pump motor (104). The sensor may generate a signal or alarm to indicate a performance problem and the need for inspection and possible maintenance. The pumps (100) might also be inspected regularly under a maintenance schedule.

[0070] Referring now to FIGS. 21-24, in one embodiment, the pump includes a pump monitoring system, generally designated (200). As shown in FIG. 21, the pump monitoring system (200) includes a housing (202). The pump monitor housing (202) mounts to the pump (100) and has a complementary shape with an arcing surface (204) configured to fit around the exterior of the substantially cylindrical housing of the motor (104). In the one embodiment, the monitoring system (200) has a modular configuration that is self-contained and can therefore be easily adapted to fit onto standard models of pumps. The monitor housing (202) includes radially and longitudinally extending cooling fins (216).

[0071] As shown in FIGS. 21 and 22, the pump monitoring system (200) includes a relay unit (210). The monitoring system (200) also includes a controller/processor (220) gathering operational and performance information of the pump (100) and providing output to operators. The controller/processor (220) is integrated on the pump (100) to capture information that can be used to determine the life and performance of the pump (100) and create a log and history. The controller/processor (220) protects the pump (100) from further damage if failure begins and provides warnings for performance issues that are experienced in operation, as explained hereinafter. The processor/controller (220) is also able to establish operational settings at the factory and modify the settings after being placed in use. The relay unit (210) connects to the controller/processor (220) through relay signal lines (208). The relay unit (210) also connects to a power source (300), such as the electrical grid, a solar energy panel or a battery through line (214). The relay unit (210) connect the pump (100) by a wiring line (212). The controller/processor (220) connects to the power source (300) by wiring (222) and associated ground (224). Sensors, such as a moisture sensor (206) includes a connector (226) for mounting to the motor side (104) of the pump (100) for detecting fluid leaks to the motor (104). The connector (226) and the sensor (206) are preferably coupled by a quick disconnect so that the elements may be easily switched or interchanged should a new motor (104) or monitoring system (200) be needed. In one embodiment, the relay unit (210) will disconnect the pump (100) should moisture be detected by the moisture sensor (206).

[0072] Referring now to FIG. 23, the controller/processor (220) receives data and information from various sensors and/or inputs (206, 240, 242, 244, 246, 248). The controller/processor (220) also includes a data port (232) and a wireless communication device (230). The wireless communication device (230) may be configured to use various types of wireless communication including, but not limited to, Wi-Fi, Bluetooth, CANNUD, and RF. The data port (232) and wireless communication device (230) provide for outputting information to a central control system, to a PC or other mobile device. The inputs and sensors (206, 240, 242, 244, 246, 248) can be various types of sensors including flow meters, heat sensors, moisture sensors, timer, electrical sensors measuring current, resistance, and related electrical system variables, as well as other meters and sensors that measure parameters that indicate performance of the pump (100). The pump monitoring system (200) is configured to acquire data for the following measurements: [0073] Outlet/System Pressure [0074] Motor Temperature [0075] Fluid Temperature [0076] Diaphragm Cavity Temperature [0077] Flow rate [0078] Motor RPM [0079] Motor Current [0080] Motor Voltage [0081] Runtime [0082] Vibration [0083] Although sensors (206, 240, 242, 244, 246, 248) are shown by way of example, fewer or additional sensors and inputs may be utilized as needed.

[0084] The pump monitor system (200) utilizes the information received by the processor and has the capability to control the pump (100) and provide performance operation information to operators.

[0085] The pump monitor is configured to provide a variety of information, including, but not limited to: [0086] Alert a user when the pump has failed due to: [0087] Damaged diaphragm from a fluid leak accumulating between lower and motor housing [0088] Dead Motor from no power is detected to the motor and/or zero rpm [0089] Prevent further damage by disabling the operation of the pump motor [0090] Alerting a user when the pump has reduced performance [0091] Lower flow at pressures indicating a valve failure and/or a stretched or worn diaphragm stretched [0092] Record runtime [0093] Estimate remaining life [0094] Adjust life prediction based on the application data from runtime record [0095] Identify when new pump head is installed [0096] Communicate to the operator in the field of use [0097] Communicate to equipment controllers with a standard interface [0098] Detecting cycling [0099] Enable rapid on/off cycling of the pressure switch/motor [0100] Sending data to the manufacturer for review [0101] Controlling pump on/off based on external input [0102] Controlling pump on/off based on user configurable timer/duty cycle [0103] Detecting a pressure switch/relay failure [0104] Power to the switch and zero system pressure [0105] Output speed control signal [0106] Reduce or increase speed.

[0107] Referring now to FIG. 24, the controller/processor (220) includes an exterior user interface (250) having a display (hidden in FIG. 21) that provides an indication of the status of the pump's operations. The user interface (250) includes a display with status indicators to show a mode or current operational status of the pump. In one embodiment, the user interface (250) includes LED indicator lights. A run light (252) indicates that the pump is in a normal operating condition. A service light (254) indicates that the pump requires maintenance and/or repairs. A failure light (256) indicates that the pump has failed and is not operating. The failure indicator (256) may also include an associated audible alarm. A diagnostic light (258) indicates that the pump is in a diagnostic mode. In one embodiment, the diagnostic mode is activated my placing a magnet (260) over the diagnostic light (258) that is sensed by the user interface (220). In one embodiment, the indicator lights (252, 254, 256, 258) have different colors to provide a quick visual indication of the operational status of the pump.

[0108] In operation, the interface (250) provides for diagnosing problems and setting up operation of the pump (100). In one embodiment, the failure light (256) will turn ON while the water/contamination is in contact with the moisture sensor (206). The failure light (256) changes to flashing after the detection of moisture until the controller (220) is reset. This notifies the operator a leak was previously detected but not detected currently. Only when a leak is actively detected will the pump be OFF by the relay unit (210). In the embodiment shown, the service light (254) will turn on when a predetermined time limit is exceeded, such as 400 hours.

[0109] In the embodiment shown, the magnet (260) is used to reset the device, although a switch or other actuation could also be used depending on the application and site where the pump is operating. The magnet is held on the interface (250) over the failure light (256). One or more of the lights (252, 254, 256, 258) or combinations of the light may blink and/or show solid to indicate start of reset and then change to indicate that the reset is complete.

[0110] The controller/processor (220) and interface (250) provide for a diagnostic mode, which may be indicated by the diagnostic light (258). To activate the diagnostic mode, the magnet (260) is placed proximate the user interface, such as against the diagnostic indicator light (258) as shown in FIG. 24. A combination of flashing by one or more of the lights may indicate that the controller/processor (220) is in diagnostic mode. The magnet (260) may then be removed. The failure light (256) and the service light (254) may flash in particular patterns that may indicate the number of times the pump monitor system (200) has been reset and/or to indicate the total number of hours the pump has been operating.

[0111] The pump monitoring system (200) is able to detect conditions that may require maintenance. When a triggering event such as scheduled maintenance or a problem are indicated by the monitoring system (200), the pump may be shut down by a switch, disconnecting the cord (190) or through the controller (220). The entire pump (100) may then be released from its mounting position by actuating the handle (158) of the pump mounting assembly (150) and lifting the pump (100) from the mounting assembly (150). Independently, the pump head (102) may also be simply removed by moving the locking pin (146) radially outward to disengage the hole (148B) and then rotating the pump head (102) relative to the motor (104) until the engagement elements (144) are moved to the first arm portion (114) of the L-shaped slot (112). The pump head (102) may then be simply pulled apart from the motor (104). It can also be appreciated that the drive shaft (106) is aligned with the complementary receiving slot and simply slides into and out of the slot (132) without the need for any tools or adapters. If the pump head (102) and the motor (104) are satisfactory following inspection, they may be simply be reassembled. However, if either the pump head (102) or the motor (104) needs replacement, these assemblies may be replaced and the replacement components are connected to one another, placed in the cradle (152), and mounted again to a mounting surface. Moreover, certain operational features of the controller (220) may be reset as appropriate. Reconnection of the cord (190) or actuation of a switch or the controller (220) would restart the pump (100).

[0112] It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.