CN105849415B - Groundwater sampling pump - Google Patents

Abstract

Disclosed is a kind of for pumping the sampling pump of the liquid acquired in wellhole.The sampling pump includes the pump part included an inlet and an outlet；Pump element；And the DC motor for driving pump element.The CA cable assembly being wrapped on reel is supported including the reel assemblies of reel and frame.CA cable assembly is supplied electric power to DC motor.The DC connector being supported on frame enables external DC power supply to supply electric power to DC motor.Whether the liquid level sensor detection external shell on shell positions in a fluid.Control panel and fluid sensor telecommunication on frame, and control panel is configured to enable a user to the turned on and off operation of control DC motor.

Description

Groundwater sampling pump

Related application

This application claims the U.S. Provisional Patent Application Serial No. No.61/911,273's submitted on December 3rd, 2013 The complete disclosure of priority, this application is incorporated herein by reference.

Technical field

This disclosure relates to groundwater sampling pump and its pump control system for acquiring water sample from underground water supply well.

Background technique

This part provides background information related with the disclosure, which is not necessarily the prior art.

Known such groundwater sampling pumping system: it is pumped up using the effluent of DC motor artesian well in future to Horizon Face, wherein sample is sucked for non-at-scene analysis.Known system uses pump and throttling set at full speed at exhaust position Reduce delivery flow, so as to collecting sample.The defect of known system is: throttling set reduces volume flow rate, but part Ground increases flow velocity, so that being difficult to acquire the sample of small size.Additionally, it is known that the power of groundwater sampling pumping system disappear Consumption can from 20 amperes variation up to 40 amperes, and usually require with AC/DC converter high current AC power supplies to mention For the DC electric power operated for pump motor, the high current AC power supplies is heavy and expensive.AC power supplies is generally unsuitable for remote Well site, therefore operator must carry individual AC power supplies.Additionally, it is known that sampling system use such centrifugal pump: when logical When crossing sample throttling set reduces flow at downstream, the centrifugal pump is under service speed (12,000rpm to 15,000rpm) Lead to the cavitation at impeller.

Summary of the invention

The part provides the overview of the disclosure, and is not the full scope of the disclosure or owning for the disclosure The comprehensive disclosure of feature.

In one aspect, this disclosure relates to which a kind of sampling pump, the sampling pump are configured to make to be configured in wellhole to pump The liquid acquired in wellhole.The sampling pump may include pump part, pump element and direct current (DC) motor.Pump part has outer Portion's shell, the external shell are configured for insertion into wellhole.External shell has entrance and exit, and pump element is accommodated in outside In portion's shell.DC motor is accommodated in external shell for driving pump element.Pump element is connected to entrance and exit, and is pumped Element is configured to liquid when being rotatably driven by DC motor from being drawn into external shell and be pumped in wellhole Outlet.When flexible cable assembly is connected to in the fluid that pump part drops in wellhole and is arranged in wellhole with pump part It is supplied electric power to pump part.Sampling pump further includes reel assemblies, and reel assemblies have to be rotatably supported by frame Reel.Rolled configuration is wrapped on reel and can be outside pump at enabling flexible cable assembly when pump part is not used It is unwound when shell drops in wellhole from reel.DC connector is supported by frame for enabling external DC power supply to couple To reel assemblies, to be supplied electric power to DC motor.Using with external shell operatively associated level sensing Device detects whether external shell positions in a fluid.Control panel is supported by the frame of reel assemblies.Control panel and fluid Sensor telecommunication, and control panel is configured to enable a user to turned on and off operation and the energy of control DC motor It is enough that external DC power supply is connected to control panel to power to pump element.

In another aspect, this disclosure relates to which a kind of sampling pump, the sampling pump are configured to make to be configured in wellhole to pump Send the liquid acquired in wellhole.The sampling pump may include pump part, which has external shell, entrance and exit, Wherein, which is configured for insertion into wellhole, and the entrance and exit is respectively at two opposite ends of external shell It is operatively associated with external shell.Pump element can be accommodated in external shell.It can hold in external shell Direct current (DC) motor is equipped with for driving pump element.Pump element can be connected to entrance and exit, and pump element is configured to When being rotatably driven by DC motor by liquid from being drawn into wellhole in external shell and be pumped to outlet.Flexible electrical Cable assembly can supply DC electric power to pump part when pump assembly is located in wellhole with outlet.Sampling pump can wrap Reel assemblies are included, which has the reel being rotatably supported by frame, and the rolled configuration is described soft at making Property CA cable assembly can be wrapped on reel when pump part is not used by.DC electrical connector is supported by frame so as to come from The DC electric power of external DC power supply can be attached to reel assemblies, to supply electric power to DC motor.Liquid level sensor and described outer Portion's shell is operatively associated for detecting whether shell positions in a fluid.Sensor can be configured to work as quilt The first optical signal is shown when submerged in water and the second optical signal is shown when being not immersed in water.DC battery can support In reel assemblies with for when not supplied electric power to DC motor to liquid level sensor offer electric power.Sampling pump may include The engageable switch of user, the user it is engageable switch for when not supplied electric power to DC motor selectively to liquid level Sensor supplies electric power and cuts off the electric power of liquid level sensor.Control panel can be supported by the frame of reel assemblies.Control plane Plate can be with fluid sensor telecommunication, and control panel is configured to enable a user to the turned on and off of control DC motor It operates and the DC electric power from external DC power supply can be connected to control panel.

In another aspect, this disclosure relates to which a kind of sampling pump assembly, which includes having inlet cap External shell is pumped, which has multiple water intake end mouths.Inlet cap utilizes the L extended through in first shell connector The bayonet pin of shape slot is connected to pump external shell.Outlet end cap is connected to pump external shell, and the outlet end using bayonet pin Lid has for that will flow out the pipe connections that property management is releasably connected to outlet end cap.Sampling pump assembly includes pump, The pump has the regenerative impeller for being connected to brushless DC motor.Brushless DC motor is located in pump external shell, and regenerative Impeller is located in inlet cap.Brushless DC motor can be operated with about 8,000rpm, at least be up to about 150 feet to provide And it may higher lift.Sensor extends beyond outlet end cap and is immersed in well locating for pump external shell in pump assembly Sensing signal is provided when below the water surface in hole.Sampling pump assembly includes reel assemblies, which has rotatably The reel of support is to be used to support for the flexible cable assembly to brushless DC motor supply DC electric power.Flexible cable assembly can It is wound on the reel being pivotably supported.Reel assemblies carry at least one internal cell, described inside at least one Battery provides the electric power for being used for sensor.Reel assemblies are provided with LED, and the LED construction drops in sampling pump assembly It is constantly flashed when in wellhole and before sensor contacts water.When pump assembly extends below water level face, LED becomes to hold The continuous state illuminated.Multiple distance labels are formed on flexible cable assembly to enable the user to determine that pump external shell is fixed Depth of the position in wellhole.

According to several additional aspects, sampling pump assembly includes pump external shell, which has with releasable Mode be connected to pump external shell housing inlet port end.Housing inlet port end includes multiple water intake end mouths, and shell enters Mouth end is connected to pump external shell using one or more bayonet pins, and one or more bayonet pin is radially The L-shaped groove being passed through in first shell connector.Inlet cap is located at the opposite with housing inlet port end of pump external shell End, the inlet cap is using one or more bayonet pins for being received in the L-shaped groove of second shell connector with class As mode be connected.Inlet cap receives the pipe connections for releasably connection outflow property management.Sensor prolongs It stretches beyond inlet cap and sensing function is provided during sampling pump part is operated and is immersed in water volume lower face Energy.

The disclosure it is each in terms of other in, sampling pump assembly is ready to drop in well, positioned at the control plane of reel First switch on plate switches to " on " position from " cutting " position.Internal cell in reel is set in sampling pump assembly The enough electric power of operation for sensor is provided when decline.In addition the LED of setting on the control panel is in sampling pump assembly It is constantly flashed when dropping in well and before the water volume in sensor contacts well.When sampling pump assembly enters water volume In and when the lower section on water level surface extends, water contact sensor, so that generating the entire sampling pump assembly of instruction is located in water The electric signal of position lower face.At this point, LED becomes " bright light " state being continuously turned on from lasting flashing state." bright light " of LED State intuitively indicates sampling pump assembly to operator and is completely submerged in water volume.

After LED becomes to continue " bright light " state, sampling pump assembly is pulled up, and is grasped until LED becomes again to lasting flashing As only, at this point, multiple distance labels are provided along the shell of CA cable assembly with the depth of 1 foot of incremental position instruction, So that it is determined that about position of the sampling pump assembly in well by depth as unit of foot.Sampling pump assembly rolls back in well, Until LED becomes to continue " bright light " state again.Then, the external power supply with 12VDC electric power is connected to reel, and Second switch is switched to " on " position from " cutting " position by operator, to start the operation of DC motor.

Content according to the description provided herein, the scope of application in addition will be apparent.Description in the content of present invention The purpose that content and specific example are meant only to illustrate, and it is not intended to restriction the scope of the present disclosure.

Detailed description of the invention

Attached drawing described herein is merely for the explanation to selected embodiment rather than all possible embodiment Property purpose, and be not intended to limit the scope of the present disclosure.

Fig. 1 is the front view of the groundwater sampling pump of the disclosure；

Fig. 2 is the end-view of the pump of Fig. 1；

Fig. 3 is the side cross-sectional view intercepted at the section of Fig. 13；

Fig. 4 is the front view of the impeller housing component of the disclosure；

Fig. 5 is the cross sectional elevation intercepted at the section of Fig. 45；

Fig. 6 is the plan view from above of the impeller housing of Fig. 4；

Fig. 7 is the face upwarding view of the impeller holding member of the housing unit of Fig. 4；

Fig. 8 is the front perspective view of the groundwater sampling pump and reel assemblies of the disclosure, which includes the ground of Fig. 1 It is lauched sampling pump；

Fig. 9 is mounted to the partial sectional elevation view of the groundwater sampling system of well conduit；

Figure 10 is the front view for the control panel being arranged on the reel of underground water acquisition system；

Figure 11 is curve graph of the flow to well depth of the groundwater sampling system about the disclosure；

Figure 12 is the circuit diagram of the control system pumped for the groundwater sampling of Fig. 8；

Figure 13 is the circuit diagram of the pump control system part pumped for the groundwater sampling of Fig. 8；

Figure 14 is the side view according to another embodiment of the groundwater sampling of disclosure pump；

Figure 15 is the view of a part of the pump assembly of Figure 14；

Figure 15 a is the enlarged drawing of the part being circled in Figure 15；

Figure 16 is the side cross-sectional view of bayonet pin, wherein bayonet pin is bonded in its corresponding slot and presses washer Contracting is to realize the intracorporal water-stop of pump case；

Figure 17 is the side cross-sectional view of annular, replaceable motor shaft seal used in the pump assembly of Figure 14；

Figure 18 is the plan view of the first surface of impeller holder used in the pump assembly of Figure 14；

Figure 19 is the side view of the impeller holder of Figure 18；

Figure 20 is the plan view of the second surface (i.e. opposed surface) of the impeller holder of Figure 18；

Figure 21 is the plan view of the first surface of the impeller housing used in the pump assembly of Figure 14；

Figure 22 is the side view of impeller housing shown in Figure 21；And

Figure 23 is the plan view of the second surface (i.e. opposed surface) of the impeller housing of Figure 21.

Through several views of attached drawing, corresponding appended drawing reference indicates corresponding component.

Specific embodiment

Illustrative embodiments are more fully described now with reference to attached drawing.

Referring to Fig.1, sampling pump assembly 10 includes pump external shell 12, which has releasably It is connected to the housing inlet port end 14 of pump external shell 12.Housing inlet port end 14 includes multiple water intake end mouths 16.Housing inlet port End 14 is connected to pump external shell 12 using one or more bayonet pins 18, and one or more bayonet pin 18 is radial Ground extends through the formation of the L-shaped groove 20 in first shell connector 22.Housing inlet port end 14 is oriented so that bayonet pin 18 Be received in L-shaped groove, and housing inlet port end 14 axially rotated with by housing inlet port end 14 releasably Locking is in place.The end opposite with housing inlet port end 14 of pump external shell 12 is provided with outlet end cap 24, similarly, The outlet end cap 24 is connected using one or more bayonet pins 26 being received in the L-shaped groove 28 of second shell connector 30. Outlet end cap 24 receives the Guan Lian for the outflow property management for showing and being more fully described referring to Fig. 9 for releasably connection Fitting 32.Sensor 34 extends beyond outlet end cap 24, and the sensor 34 is operated and submerged in sampling pump assembly 10 Sensing function is provided during water volume lower face, as referring to being more fully described Fig. 9.It is all according to several aspects The sampling pump component parts for such as pumping external shell 12, housing inlet port end 14 and outlet end cap 24 etc can be by such as stainless steel Etc metal material construct.Also other materials can be used.

Referring to Fig. 2 and referring again to Fig. 1, pipe connections 32 are connected to discharge room 36, the water pumped by sampling pump assembly 10 It is accepted in the discharge room 36 to be discharged.It is additionally provided with to receive and seal and be mentioned to the operating member of sampling pump assembly 10 For the pipe joint element 38 of electric power and the conduit of control signal.

Referring to Fig. 3 and referring again to Fig. 1 to Fig. 2, conduit 39 is shown at the example kept by pipe joint element 38 In property position.As previously noted, conduit 39 provides the electric power of the component for operating sampling pump assembly 10.Housing inlet port end 14 are provided with the inlet chamber 40 for closing on housing inlet port end wall 14a.The filter 42 of such as metal screen or plastic filter screen etc Releasably be connected to arrival end wall portion 44, the arrival end wall portion 44 limit inlet chamber 40 with housing inlet port end wall 14a opposite boundary wall portion.The water in inlet chamber 40 is flowed to across filter 42 via water intake end mouth 16 and enters blade wheel chamber In 46.The following part of the restriction of arrival end wall portion 44 housing inlet port end 14: part quilt while bayonet pin 18 engages It is sealed using one or more containment members 48 of such as O-ring etc against the internal perisporium of pump external shell 12.It is located in The pump element of 50 form of " regenerative " impeller in blade wheel chamber 46 is maintained in rotation position using impeller holder 52.Connect structure Part 54 extends partially through impeller 50 and in a rotatable way shape engagement impeller 50.Connecting elements 54 extends through horse Allow the rotation of the fluid-sealing type of impeller 50 up to shaft seal 55.Impeller 50 is connected to brushless DC motor 56 and passes through nothing It brushes the operation of DC motor 56 and rotates, which, which has, extends in connecting elements 54 and connect with connecting elements 54 Motor drive shaft 57.Motor shaft seal 55 prevents the water in blade wheel chamber 46 from entering the closing for being wherein equipped with the sealing of DC motor 56 In space.Circuit board 58 and DC motor 56 are located in the watertight chamber 60 provided by pump inner housing 62, and the pump inner housing 62 is with can The mode of sliding is received in pump external shell 12.The component of circuit board 58 can be packaged to the component of circuit board 58 Hermetically seal.In addition, multiple conductive metal pins 61 can be projected into from circuit board 58 motor 56 and circuit board 58 edge it Between space in, to detect in the space with the presence or absence of water.Metallic pin 61 forms conduction between metallic pin 61 by detection Path and the presence of water sensing.

Using regenerative impeller 50, brushless DC motor 56 can with the speed lower than the speed of known pumping system (about 8, 000rpm (revolutions per minute)) operation.This provides required lift (lift), while minimizes the cavitation of pump.

Flowing is circumferentially formed between the tubular peripheral of pump inner housing 62 and the inner wall of tubular pump external shell 12 Channel 64.The fluid streamwise " A " being discharged by the operation of impeller 50 passes through flow channel 64 then from sampling pump Component 10 is discharged.When impeller 50 is rotated by the operation of DC motor 56, the fluid that is aspirated by impeller 50 from blade wheel chamber 46 It is radially outward discharged into the impeller outlet region 66 being connected to flow channel 64.

After water flows out from impeller outlet region 66 and flows through flow channel 64, water flow enters one or more Flow through in a acquisition port 68 and further the discharge port 70 being formed in pump top end component 72.Pump top end component 72 Multiple end member seals 74 of such as O-ring etc are received in outlet end cap 24 and are provided with, pump top structure to provide Fluid Sealing between part 72 and the inner wall for pumping inner housing 62.Therefore, end member seal 74 prevents acquisition port 68 or discharge Water in port 70 enters in watertight chamber 60.Pumped water enters after flowing through outlet 70 in discharge room 36.Pipe Connector 32 is releasably attached to pump top end component 72 using connector threaded portion 76, so that the row of pipe connections 32 Portal 78 with discharge room 36 be coaxially aligned.Therefore, by the pumped all water of the rotation of impeller 50 all from discharge room 36 It is discharged via tap 78.Similar with pipe connections 32, pipe joint element 38 is using pipe joint element threaded portion 80 with can screw thread The mode of connection is connected to pump top end component 72.According to several aspects, two be provided in bayonet pin 18 setting diametrically It is set to the bayonet pin of bayonet pin 18,18 ' and two cards for being set as bayonet pin 26,26 ' diametrically in bayonet pin 26 Mouth pin.The quantity of bayonet pin can be taken the circumstances into consideration to change by manufacturer.

Referring to Fig. 4 and referring again to Fig. 3, impeller assembly 82 includes the impeller holder partly extended from impeller housing 84 52.Impeller housing 84 for example can be fixed to pump external shell 12 around its periphery by welding.

Referring to Fig. 5 and referring again to Fig. 4, impeller assembly 82 is provided with impeller housing 84, which includes shell Flange 86, the casing ledge 86 extend radially outwardly external for impeller housing 84 to be fixed to pump to provide from impeller housing 84 The position of shell 12.Housing cylindrical wall 88 is cylindrical and including 92 liang of the first reaming 90 and the second reaming formed therein Person.Impeller 50 is located in a rotatable way in the first reaming 90, and impeller holder 52 is connect in a manner of non-rotatable It is contained in the second reaming 92.First reaming 90 have the diameter smaller than the diameter of the second reaming 92 so that impeller holder 52 with Impeller 50 is overlapped.Gap " B " is provided between the periphery wall and the inner wall that is limited by the first reaming 90 of impeller 50.Gap " B " Permission has constantly provided moisture film between impeller 50 and housing cylindrical wall 88, so that friction when rotating impeller 50 is minimum Change.It is medially formed with connecting elements slot 94 across impeller 50, which receives and engage extends from motor drive shaft 57 Connecting elements 54, thus provide for impeller 50 rotate shape engagement.It closes on connecting elements slot 94 and is provided with closure gasket groove 96 to provide the sealing between connecting elements 54 and impeller housing 84.

Impeller housing 84 is provided with outlet opening 98, and the water shifted by the rotation of impeller 50 is via the outlet opening 98 It is accepted.Outlet opening 98 is connected to semicircular passing away 100, which is formed as the shell of impeller housing 84 Recess portion on internal surface 101.Passing away 100 is in fluid communication with the multiple impeller flow channels 102 for extending through impeller 50. Shell inner surface 101 is spaced apart also by fluid layer with the impeller discharge side 104 of impeller 50, thus rubbing when rotating impeller 50 It wipes and minimizes.The side opposite with impeller discharge side 104 of impeller 50 is provided with impeller supply side 106.Semicircular supply Channel 107 is formed as the recess portion in the holder surface 108 of impeller holder 52.It is located in more in impeller flow channel 102 The water provided by semicircular feed path 107 is directed in semicircular passing away 100 by a impeller blade 109.Half Circular feed path 107 is formed in holder first part 110, and as previously noted, holder first part 110 receives In the second reaming 92 of housing cylindrical wall 88.In the guarantor that can have the diameter smaller than the diameter of holder first part 110 Threaded hole 112 is formed in gripping member second part 114.Threaded hole 112 allows to remove impeller using threading tool (not shown) Holder 52 is to remove impeller 50, in order to repair.

Referring to Fig. 6 and referring again to Fig. 5, semicircular passing away 100 is from tapered 116 edge of minimum area channel end Semicircular path extends to the maximum area channel end 118 that neighbouring outlet opening 98 positions.Thus, into semicircular discharge All water in channel 100 all pass through outlet opening 98 and are discharged.

Referring to Fig. 7 and referring again to Fig. 5, the semicircle supply being formed in the holder face 108 of impeller holder 52 is logical Road 107 starts from tapered minimum area channel end 120 and extends to the positioning of neighboring entry hole 124 along semicircular path Maximum area channel end 122, the ingate 124 extend axially through the holder first part 110 of impeller holder 52. Therefore, all water into ingate 124 all pass through semicircular feed path 107, via the impeller blade 109 of impeller 50 It is sucked and is discharged in semicircular passing away 100.

Referring to Fig. 8 and referring again to Fig. 1 to Fig. 3, one that pump assembly 10 forms groundwater sampling pumping system 126 is sampled Point.Groundwater sampling pumping system 126 further includes reel assemblies 125, and reel assemblies 125 have can be made of such as metal tube A-frame 128.A-frame 128 includes the first arm 130 and the second arm 132 for relatively positioning, the first arm 130 and the Each of two arms 132 are supported by handle portion 134 between the two.Handle portion 134 is arranged to allow to deliver ground manually It is lauched sampling pumping system 126.First leg 136 is extended relative to the distal end of the first arm 130 with substantial transverse orientation.Second leg Portion 138 extends in a similar way from the second arm 132.First leg 136 and the second leg 138 allow groundwater sampling to pump system System 126 is supported by ground supports or by well conduit, this will be better described referring to Fig. 9.First arm 130 and the second arm Bracket 140 is respectively and fixedly provided between each of portion 132, and reel 142 is rotatably supported at by the bracket 140 In A-frame 128.CA cable assembly 144 is wound on reel 142 and is electrically connected to sampling pump assembly 10.It is supported on reel 142 Center portion at control panel 146 provided for operator the local of underground water sampling pump system 126 controled and operated, such as By what is better described referring to Fig. 9 and Figure 10.Hollow tube 148 is fixed to each of the first arm 130 and the second arm 132 And it is fixed near the junction of the first arm 130 and the second arm 132 and the first leg 136 and the second leg 138.It is hollow Pipe 148 also serves as memotron, and sampling pump assembly 10 can be stored in inside the memotron when not in use.Sample 10 benefit of pump assembly It is maintained in memotron or hollow tube 148 with releasable pin 150, the releasable pin 150 is releasable using this is connected to The lock ring 152 of pin 150 is installed or is withdrawn from.

The column 156 for being fixed to memotron or hollow tube 148 is connected with U-shaped fastener 154.U-shaped fastener 154 facilitates underground Hydromining collection pumping system 126 is installed to well conduit, this shows and better described referring to Fig. 9.Except being connected to sampling pump assembly Other than 10 CA cable assembly 144, the rigid supporting rod 158 with eyelet 160 can releasably be fixed to sampling pump The pump top end component 72 of component.If necessary to use the additional hoisting power removed for pump assembly 10 will to be sampled from well, then The promotion cable 162 of such as braided steel wire etc can connect to eyelet 160 and can prolong together with sampling pump assembly 10 It reaches in well.

Referring to Fig. 9 and referring again to Fig. 3 to Fig. 8, groundwater sampling pumping system 126 can be temporarily attached to well 164, should Well 164 is normally constructed to the well conduit for partly extending above ground level 166 and mainly extending below ground level 166. Sampling pump assembly 10 be inserted downwardly into the inner hole 168 of well 164 with and CA cable assembly is unwound from reel 142 from well 164 Aspirate water sample.U-shaped fastener 154 is located in the inner hole 168 of well 164 and directly contacts with well inner wall surface 170, while second Leg 138 is positioned to directly contact with well upper surface 172, and the first leg 136 is positioned to the well outer wall surface with well 164 174 directly contact.Column 156 is positioned adjacent to the opening of well 164 by this configuration of groundwater sampling pumping system 126.Except support U Other than shape fastener 154, column 156 is additionally provided when sampling pump assembly 10 is inserted into well 164 and/or is taken out from well 164 The supporting surface of sliding motion for CA cable assembly 144.Before the insertion of sampling pump assembly 10, such as transparent plastic tube Etc outflow property management 176 be connected to sampling pump assembly 10 pipe connections 32.During the insertion of sampling pump assembly 10, electricity Cable assembly 144 and outflow property management 176 are both with almost the same rate decline to prevent appointing in these objects in well Bending section is formed in one.If promoting cable 62, CA cable assembly 144 and outflow property management 176 also using cable 162 is promoted All declined with almost the same rate to prevent from forming bending section in any one of these articles in well.

When sampling the preparation of pump assembly 10 and dropping in well, first switch 178c on control panel 146 is from " cutting It is disconnected " position switches to " on " position.The internal cell (in conjunction with the component 210 of Figure 13 discussion) being arranged on reel 142 is being adopted The enough electric power of operation for sensor 34 is provided when sample pump assembly 10 declines.The LED being additionally arranged on control panel 146 180 sample pump assembly 10 drop in well when and constantly flashed before sensor 34 touches the water volume 182 in well. Water volume 182 is usually located at the top of downhole end 184 under the normal condition of well 164, so that water intake end mouth 16 is located in well Above bottom.When sampling pump assembly 10 enters in water volume 182 and extends below water level surface 186, water contact sensor 134, sensor 134 generates the electric signal that the entire sampling pump assembly 10 of instruction is located in 186 lower section of water level surface.At this point, LED 180 become to continue " bright light " state of energization from lasting flashing state." bright light " state of LED 180 intuitively refers to operator Show: sampling pump assembly 10 is completely submerged in water volume 182.

After LED 180 becomes to continue " bright light " state, operator can manually take sampling pump assembly 10 upwards Out, until LED 180 becomes again until lasting flashing operation, at this point, operator can be intuitively using multiple distance labels 188, it is the multiple to provide by the zero-bit from sampling pump assembly 10 apart from label 188 along the outer of CA cable assembly 144 Shell is upwards with the depth of 1 foot of incremental position instruction.For the purpose of record and pump operation, provides and adopt apart from label 188 Position of the sample pump assembly 10 in well 164 by measurable depth as unit of foot.Then, operator will sample pump assembly 10 Again it rolls back in well 164, until LED180 becomes to continue " bright light " state again.At this point, operator is by first switch 178 position becomes again to " cutting " state and the external power supply with 12VDC electric power is connected to reel 142.It is being connected to After external power supply with electric power, second switch 190 is switched to " on " position from " cutting " position by operator, to open The operation of the dynamic DC motor 56 being arranged in sampling pump assembly 10.After 56 ongoing operation for a period of time of DC motor, water flow from Outflow property management 176 is left.Then, sewage is pumped to a period of time from well, is until fresh water is sucked into well 164 Only.Additional for will be after the period from the sewage purification of outflow property management 176 retained, fresh water sample be then received Collection is in sample container 192.

After first switch 178 is back to its " cutting " position, operator manually carries out electric power connector 194 Plug-in type between the electrical connecting piece 196 being arranged on control panel 146 connect and external power is connected to reel 142.Electric power connector 194 is connected to the 12VDC power supply of 12 volts of DC batteries of such as automotive vehicle etc via electric power cable 198 200.The hand operation clamping piece (not shown) for being such as usually provided with automatic jumper cable group also can connect to electric power cable 198 End, be releasably connected to power supply 200 to facilitate groundwater sampling pumping system 126.During pumping operation, Sensor is supplied electric power by 12 volts of DC batteries.Sensor 34 provides additional connection-shut-off features, so that DC motor 56 is sensing Device 34 detects automatically to be powered off when sampling pump assembly 10 is located at 186 top of water level surface of well water volume 182.

Referring to Fig.1 0 and referring again to Fig. 9, the component being arranged on control panel 146 includes: (1) first switch 178, and One switch 178 can be " on/off " tumbler switch or any kind of single-pole switch；(2) second switch 190, It can be " on/off " toggle switch or any kind of single-pole switch；(3) 180 LED, LED 180 is according to several sides Face can provide green indicator light；And electric power connector 194 is connected to the connector 196 by (4) connector 196, operator. Control panel 146 is additionally provided with pump speed selector 202, which is according to several aspects can axial-rotation Potentiometer, which is rotated by operator to control DC motor 56 between Z-operation speed and maximum service speed Service speed.It is fixed that the maximum pump rate of the maximum speed of DC motor 56 and then DC motor 56 depends on sampling pump assembly 10 Depth of the position in well 164, therefore promotion total amount or total height needed for DC motor 56 are based on height " C " (referring to institute in Fig. 9 Show).During the operation of groundwater sampling pumping system 126, operator can rotate pump speed selector 202 maximum to its " on " position is rotated, to allow that a period of time is discharged from outflow property management 176 with maximum stream flow, this is for a period of time by operator It determines.After the operation time period, operator can be then rotated pump speed selector 202 counterclockwise to select from outflow The slow rate of the discharge stream of property management 176, the rate are suitble to the required fill rate of sample container 192.

Referring to Fig.1 1 and referring again to Fig. 3, Fig. 9 and Figure 10, the standard 12VDC battery of battery of such as automotive vehicle etc Operation electric power for the operation of brushless DC motor 56 can be provided.Under 1 to 8 ampere of electric current, the power of DC motor 56 disappears Consumption changes between about 50 watts to 150 watts.In contrast, as indicated herein, it is known that centrifugal pump groundwater sampling The power consumption of pumping system can be from 20 amperes of variations up to 40 amperes, and usually require mutually to convert with DC electric power high electric AC power supplies is flowed, therefore compared with known system, the power consumption of the groundwater sampling pumping system 126, which reduces, to be up to about 80%.Based on the use of 12VDC power supply 200, the curve 1 of Figure 11 shows following ranges: the use at well surface or ground level 166 It is decreased at about 145 to 150 feet most in the flow of about 1.25gpm (gallons per minute) of groundwater sampling pumping system 126 The flow for being zero gpm at big well depth " C ".

It according to other aspects, can be set booster (2 show and describe referring to Fig.1), the booster is by 12VDC voltage Rise to up to 18VDC.Using booster, the range of flow of groundwater sampling pumping system 126 is used for as shown in the curve 2 of Figure 11 The pact that can be decreased to from the flow for being increased to about 1.6gpm from well surface or ground level 166 at 150 feet of well depths " C " The flow of 0.7gpm.It is contemplated to, although still utilizing identical 12VDC power supply 200, about 180 can be provided using booster The maximum pump operational depth of foot.

Referring to Fig.1 2, circuit diagram provide for the operation of groundwater sampling pumping system 126 the input of component and data and Output port.The electronic speed controller (ESC) for DC pump is provided at ESC202, which is connected to First microcontroller 204.The output of sensor 34 is also connected to the first microcontroller 204, and the first microcontroller 204 is additionally provided with Programming port 206 is with input system performance variable and controlling set point.Electric power input and adjuster section 208 are set to control use In the electric power of operation brushless DC motor 56, electric power input and adjuster section 208 may include increasing voltage output from 12VDC To about 18VDC booster so as to increase sampling pump assembly 10 operational depth.Microcontroller 204 can be also used for forming timing Table is to track the total time that DC motor 56 operates.The total time can be by controlling blinking action (such as bright light/go out of LED 180 Lamp movement) and it is shown to user.For example, LED 180 can be in component if total run time is between 0 to 100 hour 10 flash once when being supplied to electric power first.If total run time is between 100 to 200 hours, LED 180 can flash Twice, if total run time is between 200 to 300 hours, LED 180 can flash three times, and so on.Bright every time In the case where having of short duration interval of turning off the light between lamp/sequence of turning off the light, blinking action can be repeated, for example in triplicate.Hereafter, LED 180 can be operated in conjunction with the survey of its talent for swimming to indicate whether pump external shell 12 is submerged in water.

Referring to Fig.1 3 and referring again to Fig. 9, it can be provided for the remote operation sum number of groundwater sampling pumping system 126 According to acquisition.Second battery of low capacity 210 of such as Voltaic battery etc is located on reel 142, and the second battery 210 exists Sampling pump assembly 10 provides the operation electric power for being used for LED 180 and sensor 34 and not during being initially installed in well 164 Electric power is provided to microcontroller 204 and the second microcontroller 212 when connecting 12VDC main power source.Second battery 210 is in acquisition pump group Part 10 is inserted into well and provides enough electric power before for the test operation of brushless DC motor 56.It is micro- that second battery 210 is connected to second Controller 212, the second microcontroller 212 then communicate with both LED 180 and pump speed selector 202 and adjust LED 180 and both pump speed selectors 202 operation.Radio frequency transceiver, such as can also optionally be usedAgreement Wireless transceiver 214, should Agreement wireless transceiver 214 is communicated via communication path 216 with the second microcontroller 212.Protocol transceiver 214 provides for groundwater sampling pumping system 126 and such as intelligent via wireless signal path 220 Remote radio communication between the portable electronic device 218 of mobile phone etc.Portable electronic device 218 can also be using wirelessly Transmission path 224 transmits data between sampling pumping system 126 and one or more subsystems based on cloud 222.

In addition to the second small battery 210 of temporary electrical power of the operation for LED 180 and sensor 34 is provided, reel 142 are also provided with the rechargeable battery 226 of additional larger capacity.Battery 226 is set model into offer for DC horse Up to 56 limited operating time, to provide the sample flow for carrying out artesian well 164 when power supply 200 is unavailable.For convenience, battery 226 can releasably install via any suitable mounting bracket or fixed device (not shown) to A-frame 128。

Groundwater sampling pumping system 126 can use such as smart phone, tablet computer, laptop or almost appoint The portable electronic device 218 of the personal electronic equipments of what other forms etc is controlled, is operable to and carried out data upload Or data downloading.This allows for each well to motor speed control, water position status instruction, the operating time of motor 56, battery State, trouble hunting, the historical data and other data of such as previous motor operation duration of runs and speed setting etc It is acquired and remotely accesses.Therefore, operator can also access other well sites in addition to the past data for carrying out artesian well 164 Data are used for the potential setting of operation of the groundwater sampling pumping system 126 at such as certain well of well 164 to determine.

Groundwater sampling pumping system 126 provides several advantages.These advantages include: (1) provide it is brushless with 12 volts The pumping system of DC motor, the pumping system have the circuit that is arranged in pump assembly shell and with the circuit from pump assembly shell Extend to the electric power cable of the reel being located at ground level position be grouped together it is logical for being controlled the system Route is believed, so that the service speed of DC motor and electric current reduce compared with existing sampling pumping system, to improve operating efficiency； (2) use of the regenerative impeller with 12 volts of brushless DC motors allows the service speed of DC motor from receded disk impeller Existing sampling pumping system in the case where about 12,000 to 15,000rpm is reduced to about 8,000rpm, this reduces significantly Cavitation at impeller, to improve the service life of pump assembly and impeller and reduce the shadow to the water sample aspirated from well It rings；(3) for keeping the electric power of pump assembly and controlling the reel of wiring to include embedded controller, which is provided Local control to pump assembly；(4) pump assembly is provided with water sensor, which is remotely coupled to positioned at the face of reel LED on plate is visually indicated to provide when pump is immersed in well water volume；(5) reel is additionally provided with such as Voltaic battery Etc local battery, which provides the electricity for sensor before 12 volts of main electric system are connected to pump assembly 10 Power；(6) signal from sensor provides additional on/off feature, so that indicating that pump assembly is located in sensor Pump automatically powers off when above well water volume；(7) bayonet pin being bonded in the L-shaped groove of pump assembly shell provides releasable component； (8) the individual battery in addition to the Voltaic battery operated for LED can also be set within the roll, to provide having for DC motor Limit operation；And (9) groundwater sampling pumping system 126 can use remotely setting for such as Portable mobile phone or tablet computer etc It is standby to be controlled, be operable to and carried out data upload or data downloading, to allow for each well to motor speed control, water Position state instruction, motor operating time, battery status, trouble hunting, such as previous motor operation runing time and speed are set Fixed etc historical data and other data is acquired and remotely accesses.

Referring to Fig.1 4, it can be seen that according to the sampling pump assembly 300 of another embodiment of the disclosure.Pump assembly 300 exists Structurally and operationally aspect is substantially the same with sampling pump assembly 10 discussed above, in addition to being indicated below.Sample pump group Part 300 include shell 302, the shell 302 at first end 304 have curved J-shaped slot 306 and with housing inlet port end There is similar curved J-shaped slot 310 in the associated housing connection member 308 of component 312.Figure 15 A illustrates in greater detail J-shaped Slot 310.Due to the structure of J-shaped slot 306 and 310 in this example be it is identical, the details knot of J-shaped slot 310 will be only provided Structure.In addition, it will be appreciated that, it include a pair of of the J-shaped slot 306 of about 180 degree of being separated from each other on shell 302, and similarly, On housing connection member 308 also include a pair of of J-shaped slot 310 and the pair of J-shaped slot 310 is separated from each other about 180 degree, although A J-shaped slot in each of J-shaped slot 306 and 310 only can be seen in Figure 14.

J-shaped slot 310 includes being gradually curved section 314 and slight enlarged end part 316.End sections 316 help to limit It fixs and states a little 318: when bayonet pin 320 (Figure 15) is pushed into being gradually curved in section 314 and being then pushed to a little for J-shaped slot 310 When 318 top, which provides shape retention feature.

With further reference to Figure 15, Figure 15 A and Figure 16, is advancing to bent section 314 and travelling across 314 phase of bending part Between, with 320 point of arrival 318 of bayonet pin and move through a little 318, at least one internal washer 322 (Figure 16) will start by leaf The remote edge 324 of engineer room 326 compresses.Point 318 helps to fully engage at when bayonet pin 320 is urged into above point 318 Shape " buckle " or " occlusion " movement/sense of touch are generated when in enlarged end part 316.The generation of buckle/snap-action by with On the slight compressibility of internal washer mentioned assist.Due to enlarged end part 316 define it is more smaller than distance D2 Distance D1, therefore there is the lock out action in the shape maintenance and enlarged end part 316 of bayonet pin 320.Work as bayonet pin 320 are pushed to a little 318 tops and when fully engaging in end sections 316, and user feels significantly to buckle or occlusion It acts (that is, touch feedback), this shows that bayonet pin fully rests upon in enlarged end part 316.At this stage, point 318 has Help that bayonet pin 320 is prevented to be pushed back to bending section in the case where the person of being not used applies certain specific reverse rotational force Divide in 314.Therefore, the good liquid-tight seal between this maintenance and component 302 and 312 is achieved, without such as certain Any individual sleeve or locking ring that the bayonet locking design previously researched and developed a bit is wanted.

Figure 17 shows be integrated to being easily accessible by pump assembly 300 and replaceable ring motor shaft seal 350.? In the example, it can be seen that motor drive shaft 57 is engaged with connecting elements 54.What it is around connecting elements 54 is lip ring 350.It is close Sealing 350 is it may be preferred that can be from the polytetrafluoroethylene (PTFE) (PTFE) commercially available from the company of the Fen Parker Han NiSealing The sealing element of element or any suitable equivalent form.It can be sealing holder 352, the sealing around sealing element 350 Holder 352 has body part 354 and a pair of of O-ring 356 and 358, and the pair of O-ring 356 and 358 is rested upon respectively in upper ring In shape recess portion 360 and lower annular recess 362.Sealing element 350 and 352 the two of sealing holder are shelved between being accurately sized On spacing body 364, which transfers to be shelved on the end face 366 of motor drive shaft 57.It will be noted that the outer diameter of spacer 364 It is only slightly for example, about 0.015 inch bigger than the outer diameter of body part 354, and preferably than mobile-bearing holder component 368 The internal diameter of recess portion 363 is only slightly about 0.005 inch small.The tighter tolerances allow sealing element 350 to be centrally positioned in through Figure 17 Shown in entire component connecting elements 54, without moving deviation center.

Bearing holder component 368, which can be removed, has a pair of holes 370, and the pair of hole 370, which is received, a pair of of screw threads for fastening Part 372.Threaded fastener 372 is incorporated in the tapped blind hole in the end face 366 of motor drive shaft 57.Threaded fastener 372 makes to support Holder component 368 can be by personal quick on the spot using the conventional hand tools of such as allen wrench, screwdriver etc And it easily removes.Disassembly and reassembly can be executed on the spot without complicated process.In disassembly, PTFETherefore sealing element 350 and/or sealing holder 352 can be replaced easily without special work Tool.Seal holder 352 and PTFEThe arranged concentric of sealing element 350, which also enables, seals holder 352 It is substantially completely concentrically aligned with sealing element 350 and motor drive shaft 57, this further helps to ensure that bearing holder component Water-stop between 368 and motor drive shaft 57.Referring to Fig.1 8 to Figure 20, it can be seen that according to another embodiment of the disclosure The various views of impeller holder 380.Figure 21 to Figure 23 shows the impeller housing that can be used together with impeller holder 380 The various views of 382 another embodiment.Impeller holder 380 forms the pump intake with inclined surface 384 (Figure 20), inclines Skewed surface 384 helps that stream will be entered or even is more efficiently directed in vortex shape part 386 (Figure 18).In Figure 18 and Figure 20, Vortex shape part 384a and vortex shape part 386a communicate with each other.Similarly, in Figure 21 into Figure 23, impeller housing 382 includes Rake 388, rake 388 even more efficiently facilitate for liquid stream to be guided out from vortex shape part 390.In Figure 21 and figure In 23, liquid stream enters in vortex shape part 390 at point 390a and leaves at the part 390b of vortex shape part 390.Liquid Stream enters the sloping portion 388 in Figure 21 in the part 390a left.Therefore, sloping portion 384 and sloping portion 388 make Liquid stream can be more efficiently directed in the vortex shape part formed by vortex shape part 386 and vortex shape part 390 and Liquid stream is guided out from the vortex shape part formed by vortex shape part 386 and vortex shape part 390.

Illustrative embodiments are provided, so that the disclosure will be in detail, and will be to those skilled in the art Completely express the scope of the present disclosure.Numerous specific details are set forth if particular elements, the example of device and method are to provide pair The thorough explanation of embodiment of the present disclosure.It to those skilled in the art it will be apparent that need not be using specific thin Section, and implementation illustrative embodiments, and it is evident that detail can be embodied with many different forms It shall not be interpreted to limit the scope of the present disclosure with illustrative embodiments.In some illustrative embodiments, not Describe well known process, well known apparatus structure and well known technical method in detail.

Term used herein is only used for description specific exemplary embodiments, and it is restrictive for being not intended to. As used herein, singular " one ", "one" and " described " can also be intended to include plural form, unless up and down Text is expressly stated otherwise.Term "comprising", " comprising ", " including " and " having " are inclusive, and it is thus determined that are explained The presence of the feature, entirety, step, operations, elements, and/or components stated, but it is not excluded for one or more features, entirety, step Suddenly, operation, the presence or increase of component, assembly unit and/or group.Method and step described herein, process and operation should not be by It is construed to complete with the certain order discussed or illustrated, unless otherwise specified carry out in order.It should also be understood that It is that can use other step or alternative step.

When element or layer be referred to " ... on ", " being bonded to ", " being connected to " or " being attached to " another element or layer When, it can directly engage, be directly connected to or directly couple directly on other elements or layer, with other elements or layer, or Person may exist intermediary element or middle layer.In contrast, when element is referred to as " on directly existing ... ", " being spliced directly to ", When " being connected directly to " or " being attached directly to " another element or layer, can there is no intermediary element or middle layer.It should be with phase With mode come understand to the relationship between element is described other words (for example, " ... between " with " directly exist ... it Between ", " neighbouring " and " being directly adjacent to " etc.).As used herein, term "and/or" includes one or more related columns Any and all combinations of item out.

Although term first, second, third, etc. can be used herein come describe various component, assembly units, region, layer and/ Or section, but these component, assembly units, region, layer and/or section should not be limited by these terms.These terms can be used only In one component, assembly unit of difference, region, layer or section and another region, layer or section.As used herein, term such as " the One ", " second " and other numerical terms are not meant to order or sequence, unless clearly indicated.Therefore, it is discussed below First element, component, region, layer or the section stated can be known as second element, component, region, layer or section, without de- Teaching from illustrative embodiments.

For the ease of being described, can be used herein with the term of space correlation such as " being located at ... interior ", " be located at ... Outside ", " under being located at ... ", " being located at ... lower section ", "lower", " being located at ... top ", "upper" and similar terms are described as attached The relationship of an elements or features and another elements or features shown in figure.The term of space correlation can be intended to include in addition to In attached drawing except discribed orientation, the different orientations of device in use or operation.For example, if device quilt in attached drawing Overturning, then be described as be in other elements or features " below " or " under " element will then be oriented at other elements or " top " of feature.Therefore exemplary term " being located at ... lower section " can include above and below two kinds orientation.Device can be with Other mode is oriented and (is rotated by 90 ° or in other orientations), it is therefore to be understood that space phase used herein Pair description language.

In order to be illustrated and described, the foregoing description content of embodiment is provided.The description content be not intended to for The exhausted or restriction disclosure.The each element or feature of particular implementation is typically not limited to the particular implementation, and It is to be able to carry out the embodiment that exchanges and can be used in choose in application, even if this is not specifically shown or describes.? The each element or feature of particular implementation can be changed in many ways.This change is not to be regarded as a departure from this It is open, and all this modifications are intended to be included within the scope of the present disclosure.

Claims (26)

1. a kind of sampling pump, the sampling pump is configured to make to be configured in wellhole to pump the liquid acquired in the wellhole Body, the sampling pump include:

Pump part, the pump part have external shell, and the external shell is configured for insertion into the wellhole, the outside Shell has housing inlet port and housing outlets；

Regenerative pump element, the regenerative pump element are accommodated in the external shell, and the regenerative pump element includes leaf Wheel assembly, the impeller assembly include:

For the impeller of rotary motion, the impeller has the multiple impeller flow channels for extending through the impeller；

Impeller housing, the impeller housing have passing away, the passing away and multiple impeller flow channels and formation Outlet opening connection in the impeller housing, the passing away extend from tapered minimum area channel end along path To the maximum area channel end of neighbouring outlet opening positioning；And

Impeller holder, the impeller holder are arranged adjacent to the impeller and keep the impeller, the impeller holder With feed path, the feed path starts from tapered minimum area channel end and extends to neighboring entry hole along path The maximum area channel end of positioning；

D.c. motor, the d.c. motor are accommodated in the external shell for driving the regeneration in a rotatable way The impeller of formula pump element, the regenerative pump element is connected to the housing inlet port and the housing outlets, and the regeneration Formula pump element is configured to pump out liquid to institute from the wellhole when the d.c. motor is rotatably driven the impeller It states in external shell and to the housing outlets；

Liquid level sensor, the liquid level sensor and the pump part are operatively associated, with described for detecting When external shell positions in a fluid；

Flexible cable assembly, the flexible cable assembly be used for d.c. motor provide direct current power, and and fluid sensor with Operable mode is associated；And

User's control panel, the user's control panel are communicated with flexible cable, and the user's control panel is constructed such that User can control the turned on and off operation of the d.c. motor from user's control panel, and provide a user from liquid level The information of sensor is so that user can be notified when pump assembly is positioned in the fluid in wellhole；

Wherein the user's control panel is additionally provided with pump speed selector, and the pump speed selector is rotated by operator To control service speed of the d.c. motor between Z-operation speed and maximum service speed.

2. sampling pump according to claim 1, wherein the d.c. motor has the motor drive shaft engaged with connecting elements,

The sampling pump further includes motor shaft seal, and the motor shaft seal is integrated to the pump part and includes:

Replaceable annular seal element, the sealing element are arranged around the connecting elements；

Holder is sealed, the sealing holder surrounds the sealing element；

Annular recess, the annular recess are formed in the opposite face of the sealing holder；

A pair of of O-ring, the pair of O-ring rest upon in the annular recess；

It is easily accessible by by removing bearing holder component and the housing inlet port, the motor shaft seal.

3. sampling pump according to claim 1 further comprises reel, the reel is mounted on frame for revolving Turn, the reel enables cable to unwind when the pump part drops in the wellhole from the reel, and in institute Stating when pump part is exited from the wellhole can be wrapped on the reel.

4. sampling pump according to claim 1, wherein user's control panel further comprises connector, the connector is used In external dc power is connected to control control panel, to regenerative pump element and fluid sensor power supply.

5. sampling pump according to claim 1, the flexible cable assembly includes being located on the flexible cable assembly Indicate the label of measurement length unit.

6. sampling pump according to claim 1, wherein the d.c. motor includes Brushless DC motor.

7. sampling pump according to claim 1, further includes:

Dc-battery, the dc-battery are carried on frame and are electrically coupled to the fluid sensor to pass to the fluid Sensor supplies electric power；

First switch, the first switch are associated with the user's control panel to pass for turned on and off to the fluid The direct current power of sensor；And

Indicator, the indicator are communicated with the fluid sensor to be used to indicate the external shell and whether there is in described In fluid in wellhole.

8. sampling pump according to claim 7 further includes on the control panel for allowing users to institute State the second switch that d.c. motor is powered and powers off.

9. sampling pump according to claim 7, wherein the indicator includes Optical devices, the Optical devices provide to User indicates whether the fluid sensor has submerged optical signalling in a fluid.

10. sampling pump according to claim 9, wherein the Optical devices are flashed intermittently before contacting fluid, and And it then keeps when being immersed in fluid in the state persistently illuminated.

11. sampling pump according to claim 3, wherein the frame includes for receiving the pump part and in institute State the structure that the pump part is stored when pump part is not used.

12. sampling pump according to claim 1, further includes the adjustable speed control of user, the user is adjustable Speed control and the user's control panel it is operatively associated, allow the user to adjust the direct current horse Therefore the speed that reaches simultaneously can adjust the flow generated by the regenerative pump element.

13. sampling pump according to claim 1, wherein the d.c. motor is controlled such that when fluid sensor detects When fluid sensor is no longer submerged in a fluid, the d.c. motor is automatically cut off.

14. sampling pump according to claim 1, wherein the user's control panel is configured to record the regenerative pump The total run time of element operation simultaneously shows the total run time to user.

15. sampling pump according to claim 1 further comprises the microcontroller for controlling the operation of the sampling pump Device.

It further include that the user's control panel and user's is long-range for enabling 16. sampling pump according to claim 1 The short-range wireless transceiver of personal electronic equipments wireless communication.

17. sampling pump according to claim 1 further includes pipe, the pipe is adapted to secure to the shell of the pump part Body is exported for the fluid pumped by the pump part to be guided out the wellhole.

18. a kind of sampling pump, the sampling pump is configured to make to be configured in wellhole to pump the liquid acquired in the wellhole Body, the sampling pump include:

Pump part, the pump part have external shell, and the external shell is configured for insertion into the wellhole；

Two of housing inlet port and housing outlets, the housing inlet port and each leisure external shell of the housing outlets are opposite End and the external shell are operatively associated；

Regenerative pump element, the regenerative pump element are accommodated in the external shell, and the regenerative pump element includes leaf Wheel assembly, the impeller assembly include:

For the impeller of rotary motion, the impeller has the multiple impeller flow channels for extending through the impeller；

Impeller housing, the impeller housing have passing away, the passing away and multiple impeller flow channels and formation Outlet opening connection in the impeller housing, the passing away extend from tapered minimum area channel end along path To the maximum area channel end of neighbouring outlet opening positioning；And

Impeller holder, the impeller holder are arranged adjacent to the impeller and keep the impeller, the impeller holder With feed path, the feed path starts from tapered minimum area channel end and extends to neighboring entry hole along path The maximum area channel end of positioning；D.c. motor, the d.c. motor are accommodated in the external shell for can revolve The mode turned drives the impeller of the regenerative pump element, and the regenerative pump element goes out with the housing inlet port and the shell Mouthful connection, and the regenerative pump element is configured to liquid when the d.c. motor is rotatably driven the impeller from institute It states and the housing outlets is pumped out in the external shell and be pumped in wellhole；

Flexible cable assembly, the flexible cable assembly are connected to for being located in institute in the pump part with the housing outlets Direct current power is supplied from dc-battery to the d.c. motor when stating in wellhole；

The engageable switch of user, the engageable switch of user is for selectively applying and cutting off the electricity from dc-battery Power, the external cell are operatively connect with pump part, so that regenerative pump element can be opened or closed by user；

Microcontroller, the microcontroller is operationally associated with the engageable switch of the user and d.c. motor, to help The opening and closing operation for controlling the user's control in response to the engageable switch of the user of d.c. motor and carrying out；And

It is provided with the user's control panel of pump speed selector, wherein the pump speed selector is rotated by operator to control Service speed of the d.c. motor processed between Z-operation speed and maximum service speed.

19. sampling pump according to claim 18, wherein the d.c. motor has the motor engaged with connecting elements Axis,

The sampling pump further includes motor shaft seal, and the motor shaft seal is integrated to the pump part and includes:

Replaceable annular seal element, the sealing element are arranged around the connecting elements；

Holder is sealed, the sealing holder surrounds the sealing element；

Annular recess, the annular recess are formed in the opposite face of the sealing holder；

A pair of of O-ring, the pair of O-ring rest upon in the annular recess；

It is easily accessible by by removing bearing holder component and the housing inlet port, the motor shaft seal.

20. sampling pump according to claim 18, further comprises:

It is used to support the reel of CA cable assembly；

The reel is used to support with the frame for rotary motion；And

Control panel, the control panel are connected to CA cable assembly, the control panel include the engageable switch of the user and The microcontroller.

21. sampling pump according to claim 18, further comprises:

Fluid sensor, the fluid sensor are operationally associated with CA cable assembly and are accommodated in pump part, to be used for It detects in the fluid when pump part is located in wellhole.

22. sampling pump according to claim 18 further comprises first shell connector, the first shell connector It is arranged at the first end of the external shell and the housing inlet port is enable to connect through the formation of the first shell At least one of L-shaped groove or J-shaped slot on fitting and from housing inlet port bayonet pin outstanding and removably It is attached to the external shell.

23. sampling pump according to claim 22, wherein the external shell includes the J-shaped slot, and the J-shaped slot There is provided in shape, the engagement of palpable clamp-close type to be to indicate to the user that the bayonet pin shape is bonded in the J-shaped slot； And

Further include second shell connector, the second shell connector be arranged at the second end of the external shell and Enable L-shaped groove of the housing outlets on the second shell connector and outstanding from the housing outlets Bayonet pin and be removably attached to the external shell.

24. sampling pump according to claim 18 further comprises at least one of following:

Additional switch, the additional switch are operatively associated so as to user's energy with the user's control panel Enough control the operation of the d.c. motor；Or

The adjustable speed control of user, the adjustable speed control of user is with the d.c. motor with operable Mode is associated to be generated so that user can adjust the speed of the d.c. motor and therefore can adjust by the pump element Flow.

25. a kind of sampling pump assembly, comprising:

External shell is pumped, the pump external shell has the inlet cap including multiple water intake end mouths, the housing inlet port end cap It is connected to the pump external shell using bayonet pin, the bayonet pin extends through a pair of L-shaped slot in first shell connector Or at least one of a pair of of J-shaped slot in the first shell connector；

Outlet end cap, the housing outlets end cap are connected to the pump external shell, and the housing outlets using bayonet pin End cap has for that will flow out the pipe connections that property management is releasably connected to the housing outlets end cap；

Pump assembly, the pump assembly include the impeller assembly with the regenerative impeller for being connected to Brushless DC motor, the nothing Brush d.c. motor is located in the pump external shell and the regenerative impeller is located in the housing inlet port end cap；

The impeller assembly includes:

For the regenerative impeller of rotary motion, the regenerative impeller has the multiple leaves for extending through the regenerative impeller Take turns flow channel；

Impeller housing, the impeller housing have passing away, the passing away and multiple impeller flow channels and formation Outlet opening connection in the impeller housing, the passing away extend from tapered minimum area channel end along path To the maximum area channel end of neighbouring outlet opening；And

Impeller holder, the impeller holder are arranged adjacent to the regenerative impeller and keep the regenerative impeller, institute Impeller holder is stated with feed path, the feed path starts from tapered minimum area channel end and extends along path The maximum area channel end positioned to neighboring entry hole；

Fluid sensor, the fluid sensor extend beyond the housing outlets end cap, and the fluid sensor is in the pump Sensing signal is provided when below the flow surface that component is immersed in wellhole locating for the pump external shell；

Flexible cable, the flexible cable are operationally associated with the pump assembly and fluid sensor；And

Control panel, the control panel are operationally associated with the flexible cable, and the control panel includes:

Optical element, the optical element are configured to still also be not located in fluid when the pump assembly declines just in wellhole When the first signal is provided, and provide second signal when pump assembly contacts fluid；

The engageable switch of user, the engageable switch of user are operated for controlling the opening and closing of d.c. motor；

Direct current connector, the direct current connector make it possible to be removably connected to dc-battery；And

Pump speed selector, the pump speed selector rotated by operator with control d.c. motor Z-operation speed with Service speed between maximum service speed.

26. sampling pump assembly according to claim 25, wherein the Brushless DC motor has to be engaged with connecting elements Motor drive shaft,

The sampling pump assembly further includes motor shaft seal, and the motor shaft seal is integrated to the pump assembly and includes:

Replaceable annular seal element, the sealing element are arranged around the connecting elements；

Holder is sealed, the sealing holder surrounds the sealing element；

Annular recess, the annular recess are formed in the opposite face of the sealing holder；

A pair of of O-ring, the pair of O-ring rest upon in the annular recess；

It is easily accessible by by removing bearing holder component and the housing inlet port end cap, the motor shaft seal.