CN102979735B - Bi-energy pneumatic submersible pump for mine - Google Patents
Bi-energy pneumatic submersible pump for mine Download PDFInfo
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- CN102979735B CN102979735B CN201210465549.9A CN201210465549A CN102979735B CN 102979735 B CN102979735 B CN 102979735B CN 201210465549 A CN201210465549 A CN 201210465549A CN 102979735 B CN102979735 B CN 102979735B
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Abstract
The invention discloses a kind of Bi-energy pneumatic submersible pump for mine, a motor seal chamber is formed between motor and variable speed actuating device, an outfan annular seal space is formed between water pump and variable speed drive, a speed change annular seal space is formed between motor seal chamber and outfan annular seal space, the output shaft of described motor is the power shaft of described variable speed actuating device, the line shaft that output shaft is water pump of described variable speed actuating device.By the way, strong adaptability of the present invention, at two big deceleration and the speeders of all can mating between class air motor and water pump to design double dynamical pneumatic submersible pump, can thoroughly solve in the bad working environments such as inflammable and explosive humidity, reach big flow, high-lift water-discharged pump requirement, double dynamical driving torque is big, and shock resistance is high, and mechanical efficiency is high, start flexibly, low pressure start can draining, characteristic curve of pump is smooth, can run under big flow, high-lift requirement.
Description
Technical field
The present invention relates to Pneumatic water pump field, particularly relate to a kind of Bi-energy pneumatic submersible pump for mine.
Background technology
Colliery overall efficiency in vane type pneumatic submersible pump standard only only 29% ~ 48%.Mine pneumatic (pneumatic) water pump
Having a distinguishing feature, due to the mobility of pump, a pump often uses in multiple occasion, and service condition is extremely complex, actual
Running operating point often changes, including the pressure in compressed air line, changes in flow rate；And water outlet discharge line does not flow
Adjustable valve, only illustrates that mining air pump runs all under big flow rate working conditions, and actual lift great majority does not reaches user's requirement,
Scope of operation working site dewatering needs can only be solved at present.
Summary of the invention
The technical problem that present invention mainly solves is to provide a kind of Bi-energy pneumatic submersible pump for mine, it is possible to through two kinds of energy
Amount conversion equipment, makes Pneumatic water pump can run under flow rate working conditions high-lift, big, and characteristic curve of pump is smooth, and efficiency improves.
For solving above-mentioned technical problem, the technical scheme that the present invention uses is: provide a kind of double dynamical mine pneumatic
Immersible pump, including: motor, water pump, it is provided with a variable speed actuating device, described motor and variable speed between described motor and water pump
Form a motor seal chamber between actuating device, between described water pump and variable speed drive, form an outfan annular seal space, institute
Stating and form a speed change annular seal space between motor seal chamber and outfan annular seal space, the output shaft of described motor passes with described variable speed
The power shaft of dynamic device connects, and the described output shaft of variable speed actuating device is connected with the line shaft of water pump.
In a preferred embodiment of the present invention, described variable speed actuating device is an enclosed planetary reduction gear actuating device,
It includes that planet carrier, described planet carrier are provided with a sun gear, multiple planetary gear, engages with sun gear even inside each planetary gear
Connecing, each planetary gear is peripheral to be connected with a ring gear engagement.
In a preferred embodiment of the present invention, described motor is turbine pneumatic motor, described turbine pneumatic motor
Including turbine output shaft, the turbine be located on described turbine output shaft, described sun gear is positioned at described turbine output shaft one end, and
Forming integrative-structure with described turbine output shaft, described line shaft is wholely set with described planet carrier, described line shaft outfan
It is provided with impeller blade.
In a preferred embodiment of the present invention, described turbine output shaft is respectively equipped with turbine output shaft upper bearing (metal) and whirlpool
Wheel output shaft lower bearing.
In a preferred embodiment of the present invention, described motor is volume pneumatic vane motor, and it includes that vane type turns
Sub-axle, described blade rotor axle outfan is connected with described sun gear, and described line shaft is wholely set with described planet carrier, institute
State line shaft outfan and be provided with impeller blade.
In a preferred embodiment of the present invention, described motor is volume gear-type pneumatic motor, and it includes that gear type turns
Sub-axle, described gear-type rotor axle outfan is connected with described sun gear, and described line shaft is wholely set with described planet carrier, institute
State line shaft outfan and be provided with impeller blade.
In a preferred embodiment of the present invention, described gear-type rotor axle or blade rotor axle are equipped with armature spindle
Upper bearing (metal) and armature spindle lower bearing.
In a preferred embodiment of the present invention, described planet carrier is respectively equipped with planet carrier upper bearing (metal) and axle under planet carrier
Hold.
In a preferred embodiment of the present invention, described planetary gear is provided with planetary gear pillar.
In a preferred embodiment of the present invention, between described motor seal chamber, outfan annular seal space and speed change annular seal space
Being isolated by input sealing system and outfan sealing system respectively, described input sealing system includes that being located at motor turns with becoming
Multiple O RunddichtringOs between speed actuating device, described outfan sealing system includes being located at variable speed actuating device and water pump
Between double reinforced seals combination.
The invention has the beneficial effects as follows: Bi-energy pneumatic submersible pump for mine strong adaptability of the present invention, the two big pneumatic horses of class
Reach between water pump and all can mate deceleration and speeder to design double dynamical pneumatic submersible pump, can thoroughly solve inflammable and explosive
In the bad working environments such as humidity, reach big flow, high-lift water-discharged pump requirement；
Double dynamical driving torque is big, and shock resistance is high, and mechanical efficiency is high, starts flexibly, starts can arrange at low pressure
Water, characteristic curve of pump is smooth, can run under big flow, high-lift requirement；
No matter coupling slow down and speeder all can direct connection Flexible Transmission, reach that overall volume is small and exquisite, compact conformation, have
Integrally aesthetic property, practicality；
Core force part, impact resistant regions, fragile parts (such as axle, gear etc.) all use high-strength material to process,
And carry out heat treatment or modifier treatment, strictly ensure product quality and complete machine by high-precision requirement, high standard matching requirements
Can be up to standard；
Complete machine is divided into three annular seal spaces, input sealing system and the isolation of outfan sealing system, and sealing property is reliable,
Guarantee work of diving beneath the water；
Supporting adaptability is good, assembles connection reliable, changes few parts, i.e. adapts to user's request overall appearance association
Adjust consistent.
Accompanying drawing explanation
Fig. 1 is the structural representation of Bi-energy pneumatic submersible pump for mine one of the present invention preferred embodiment；
Fig. 2 is the structural representation of another preferred embodiment of Bi-energy pneumatic submersible pump for mine of the present invention；
Fig. 3 is the structural representation of variable speed actuating device in the Bi-energy pneumatic submersible pump for mine shown in Fig. 1；
Fig. 4 is the performance chart of existing turbine pneumatic immersible pump；
Fig. 5 is the performance chart of the Bi-energy pneumatic submersible pump for mine of the present invention；
In accompanying drawing, the labelling of each parts is as follows: 1, motor, 2, water pump, 3, variable speed actuating device, 4, O RunddichtringO, 5,
Double reinforced seals are combined, 6, planet carrier, 7, sun gear, 8, planetary gear, 9, ring gear, 10, turbine output shaft, 11, turbine, 12,
Turbine output shaft upper bearing (metal), 13, turbine output shaft lower bearing, 14, line shaft, 15, impeller blade, 16, blade rotor axle, 17,
Armature spindle upper bearing (metal), 18, armature spindle lower bearing, 19, planet carrier upper bearing (metal), 20, planet carrier lower bearing.
Detailed description of the invention
Below in conjunction with the accompanying drawings presently preferred embodiments of the present invention is described in detail, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, thus protection scope of the present invention is made apparent clear and definite defining.
Referring to Fig. 1-Fig. 3, the embodiment of the present invention includes:
A kind of Bi-energy pneumatic submersible pump for mine, including: motor 1, water pump 2, it is provided with one between described motor 1 and water pump 2
Variable speed actuating device 3, forms a motor seal chamber, described water pump 2 and change between described motor 1 and variable speed actuating device 3
Form an outfan annular seal space between speed actuating device, form a speed change between described motor seal chamber and outfan annular seal space close
Envelope chamber.
Respectively by input sealing system and output between described motor seal chamber, outfan annular seal space and speed change annular seal space
End sealing system isolation, described input sealing system includes the multiple O types being located between motor 1 and variable speed actuating device 3
Sealing ring 4, described outfan sealing system includes the double reinforced seals combination being located between variable speed actuating device 3 and water pump 2
5。
Each chamber can keep independence, can obey again complete machine co-ordination.This sealing system and drive system are intersected
Design, reasonable combination, integral type is arranged and is just constituted the new system structure of double dynamical pneumatic submersible pump, fully demonstrated specially joining of it
The interchangeability that property, terseness, reliability and water pump 2 are supporting.
This kind of building block design theory, can accelerate the producing in serial form of new product.In view of bad working environments in the mine water of ore deposit
Power shaft bearings at both ends uses totally enclosed type band level bearing, and power shaft carries out high frequency heat and processes compact conformation, coordinates requirement height.Energy
Meet supporting, bear the needs of radial force, axial force and impulsive force.
The output shaft of described motor 1 is connected with the power shaft of described variable speed actuating device 3, described variable speed actuating device
The output shaft of 3 is connected with the line shaft 14 of water pump 2, and described variable speed actuating device 3 is deceleration device or speeder.On an equal basis
Make water pump 2 can run under flow rate working conditions high-lift, big under air consumption premise, for the purpose of reaching to save the energy.
Described variable speed actuating device 3 is an enclosed planetary reduction gear actuating device, described enclosed planetary reduction gear actuating device
Including single arm type planet carrier 6, described planet carrier 6 is provided with a sun gear 7, multiple planetary gear 8, inside each planetary gear 8 and the sun
Wheel 7 engagement connects, and each planetary gear is peripheral to be connected with ring gear 9 engagement.
Gear Planet Transmission and ordinary gear gear ratio are little compared with having volume, lightweight, and bearing capacity is big, efficiency height and pulsus deletus
The advantages such as dynamic, stable working.
It may also be other deceleration devices, but enclosure designs can break intrinsic consistent coordination idea；It is used for reducing
Rotating speed and increase torque, with satisfied coupling needs.
The Bi-energy pneumatic submersible pump for mine of the present invention can be turbine pneumatic motor, it is also possible to be volume blade or
Gear-type pneumatic motor, requires and bad working environments in the mine water of ore deposit according to input and output speed between motor 1 to water pump 2 impeller
Composite demand, ingenious distribution gear ratio and sophisticated design driving member.Slowing-down structure is optimized for high speed level and slow speed turbine stage, protects simultaneously
Card inputs and exports concentric transmission and ensure that the small and exquisite of whole drive mechanism.
The preferred embodiments of the present invention one: motor 1 is turbine pneumatic motor, described turbine pneumatic motor includes turbine
Output shaft 10, the turbine 11 being located on described turbine output shaft 10, described turbine output shaft 10 is respectively equipped with turbine output shaft
Upper bearing (metal) 12 and turbine output shaft lower bearing 13.
Described sun gear 7 is integrally formed at described turbine output shaft 10 one end, and described water pump 2 includes line shaft 14, described
Line shaft 14 is wholely set with described planet carrier 6, and described line shaft 14 outfan is provided with impeller blade 15.
Turbine output shaft 10 is the power shaft of variable speed actuating device 3, and the output shaft of variable speed actuating device 3 is water
The line shaft 14 of pump 2, between turbine output shaft 10 to line shaft 14, middle without shaft coupling, without transitional flange, without asymmetric
Property, compact conformation, transmission are succinctly, rationally distributed；As used other deceleration device structures, just having unsymmetry, contour structures is big,
Lack compact sense.
Line shaft 14 is wholely set with planet carrier 6, and described planet carrier 6 is respectively equipped with planet carrier upper bearing (metal) 19 and planet carrier
Lower bearing 20.Planet carrier 6 processes through high frequency heat has enough antitorque, bending resistances and the mechanical strength of shock resistance, is arranged on
In bearing block, having two rolling bearing supportings, in the end cap of line shaft 14 outfan, two backbone sealing rings seal, smooth running
Reliably, can quickly form serial model No. water pump 2 as changed the pump housing with impeller blade 15, be the big advantage adapting to customer demand, more
Changing rapid wear skeleton sealing element to be also particularly easy to, this is also a kind of embodiment of building block design theory.
In embodiment one, being to use direct connection Flexible Transmission, turbine pneumatic motor strong point distance is near, adds that sealing can
Leaning on, No leakage, capacity usage ratio is high, makes power section start (just can start when 0.1Mpa) smooth running fast, flexible, rotating speed
More enhance when 0.5Mpa load actual measurement rotating speed up to 12000r/min, up to 18000r/min time unloaded.Then pass through energy
Amount conversion equipment coupling, slow down water pump 2 structural grouping reaching optimum technology parameter with optimization, is allowed to guarantee to meet Pneumatic water pump
Can be at low air consumption, big flow, runs under high-lift operating mode, improves efficiency, saved the energy.
The preferred embodiments of the present invention two: motor 1 is volume pneumatic vane motor, described volume pneumatic vane motor
Including blade rotor axle 16, described blade rotor axle 16 is provided with armature spindle upper bearing (metal) 17 and armature spindle lower bearing 18.
Described blade rotor axle 16 outfan is connected with described sun gear 7, and described water pump 2 includes line shaft 14, described
Line shaft 14 is wholely set with described planet carrier 6, and described line shaft 14 outfan is provided with impeller blade 15.
Blade rotor axle 16 is the power shaft of variable speed actuating device 3, and the output shaft of variable speed actuating device 3 is water
The line shaft 14 of pump 2, between blade rotor axle 16 to line shaft 14, middle without shaft coupling, without transitional flange, without asymmetric
Property, compact conformation, transmission are succinctly, rationally distributed；As used other deceleration device structures, just having unsymmetry, contour structures is big,
Lack compact sense.
Line shaft 14 is wholely set with planet carrier 6, and described planet carrier 6 is respectively equipped with planet carrier upper bearing (metal) 19 and planet carrier
Lower bearing 20.Planet carrier 6 processes through high frequency heat has enough antitorque, bending resistances and the mechanical strength of shock resistance, is arranged on
In bearing block, having two rolling bearing supportings, in the end cap of line shaft 14 outfan, two backbone sealing rings seal, smooth running
Reliably, can quickly form serial model No. water pump 2 as changed the pump housing with impeller blade 15, be the big advantage adapting to customer demand, more
Changing rapid wear skeleton sealing element to be also particularly easy to, this is also a kind of embodiment of building block design theory.
In embodiment two, being to use direct connection Flexible Transmission, volume pneumatic vane motor strong point distance is near, adds close
Seal reliable, No leakage, capacity usage ratio is high, makes power section start (just can start when 0.1Mpa) smooth running fast, flexible,
Rotating speed more enhances when 0.5Mpa load actual measurement rotating speed up to 12000r/min, up to 18000r/min time unloaded.Then lead to
Crossing energy conversion device coupling, slow down water pump 2 structural grouping reaching optimum technology parameter with optimization, is allowed to guarantee to meet water pump
2 can be at low air consumption, big flow, runs, improve efficiency, saved the energy under high-lift operating mode.
The preferred embodiments of the present invention three: motor 1 is volume gear-type pneumatic motor, described volume gear-type pneumatic motor
Including gear-type rotor axle, described gear-type rotor axle is provided with armature spindle upper bearing (metal) 17 and armature spindle lower bearing 18.
Described gear-type rotor axle outfan is connected with described sun gear 7, and described water pump 2 includes line shaft 14, described dynamic
Power axle 14 is wholely set with described planet carrier 6, and described line shaft 14 outfan is provided with impeller blade 15.
Gear-type rotor axle is the power shaft of variable speed actuating device 3, and the output shaft of variable speed actuating device 3 is water pump
The line shaft 14 of 2, between gear-type rotor axle to line shaft 14, middle without shaft coupling, without transitional flange, without unsymmetry,
Compact conformation, transmission are succinctly, rationally distributed；As used other deceleration device structures, just having unsymmetry, contour structures is big, lacks
Weary compact sense.
Line shaft 14 is wholely set with planet carrier 6, and described planet carrier 6 is respectively equipped with planet carrier upper bearing (metal) 19 and planet carrier
Lower bearing 20.Planet carrier 6 processes through high frequency heat has enough antitorque, bending resistances and the mechanical strength of shock resistance, is arranged on
In bearing block, having two rolling bearing supportings, in the end cap of line shaft 14 outfan, two backbone sealing rings seal, smooth running
Reliably, can quickly form serial model No. water pump 2 as changed the pump housing with impeller blade 15, be the big advantage adapting to customer demand, more
Changing rapid wear skeleton sealing element to be also particularly easy to, this is also a kind of embodiment of building block design theory.
In embodiment three, being to use direct connection Flexible Transmission, volume gear-type pneumatic motor strong point distance is near, adds close
Seal reliable, No leakage, capacity usage ratio is high, makes power section start (just can start when 0.1Mpa) smooth running fast, flexible,
Rotating speed more enhances when 0.5Mpa load actual measurement rotating speed up to 12000r/min, up to 18000r/min time unloaded.Then lead to
Crossing energy conversion device coupling, slow down water pump 2 structural grouping reaching optimum technology parameter with optimization, is allowed to guarantee to meet water pump
2 can be at low air consumption, big flow, runs, improve efficiency, saved the energy under high-lift operating mode.
Referring to table 1, table 1 is the stream under air pressure is 0.4MPa and 0.55MPa of existing turbine pneumatic immersible pump
Measure and the data of corresponding lift:
Table 1:
Refer to table 2, table 2 be motor 1 be that the Bi-energy pneumatic submersible pump for mine of turbine pneumatic motor is at air pressure
The data of the flow under 0.4MPa and 0.55MPa and corresponding lift:
Table 2:
As can be seen from the above data, in former turbine size, enter to arrange the equal condition of invariant position, air inflow and air consumption
Under, after setting up epicyclic type device, it is increased by the moment of torsion of pump shaft greatly, makes the effective power of water pump also improve, simultaneously
Comparison diagram 4 and Fig. 5, pump performance plateau, can run in the range of big flow high-lift and meet user's request.
Bi-energy pneumatic submersible pump for mine strong adaptability of the present invention, two big between class air motor 1 and water pump 2 all can
Join deceleration and speeder to design double dynamical pneumatic submersible pump, can thoroughly solve in the bad working environments such as inflammable and explosive humidity,
Reach big flow, high-lift water-discharged pump requirement.
Double dynamical driving torque is big, and shock resistance is high, and mechanical efficiency is high, starts flexibly, starts can arrange at low pressure
Water, characteristic curve of pump is smooth, can run under big flow, high-lift requirement.
No matter coupling slow down and speeder all can direct connection Flexible Transmission, reach that overall volume is small and exquisite, compact conformation, have
Integrally aesthetic property, practicality.
Core force part, impact resistant regions, fragile parts (such as axle, gear etc.) all use high-strength material to process,
And carry out heat treatment or modifier treatment, strictly ensure product quality and complete machine by high-precision requirement, high standard matching requirements
Can be up to standard.
Complete machine is divided into three annular seal spaces, input sealing system and the isolation of outfan sealing system, and sealing property is reliable,
Can ensure that the feature of work of diving beneath the water.
Supporting adaptability is good, assembles connection reliable, changes few parts, i.e. adapts to user's request overall appearance association
Adjust consistent.
The foregoing is only embodiments of the invention, not thereby limit the scope of the claims of the present invention, every utilize this
Equivalent structure or equivalence flow process that bright description and accompanying drawing content are made convert, or are directly or indirectly used in other relevant skills
Art field, is the most in like manner included in the scope of patent protection of the present invention.
Claims (5)
1. a Bi-energy pneumatic submersible pump for mine, it is characterised in that including: motor, water pump, sets between described motor and water pump
There is a variable speed actuating device, between described motor and variable speed actuating device, form a motor seal chamber, described water pump and change
Form an outfan annular seal space between speed actuating device, form a speed change between described motor seal chamber and outfan annular seal space close
Envelope chamber, the output shaft of described motor is connected with the power shaft of described variable speed actuating device, described variable speed actuating device defeated
Shaft is connected with the line shaft of water pump；
Wherein, motor is turbine pneumatic motor, volume pneumatic vane motor or volume gear-type pneumatic motor；
Between described motor seal chamber, outfan annular seal space and speed change annular seal space close by input sealing system and outfan respectively
Envelope isolation of system, described input sealing system includes the multiple O RunddichtringOs being located between motor and variable speed actuating device,
Described outfan sealing system includes the double reinforced seals combination being located between variable speed actuating device and water pump；
Described variable speed actuating device is an enclosed planetary reduction gear actuating device, and it includes that planet carrier, described planet carrier are provided with
One sun gear, multiple planetary gear, be connected with sun gear engagement inside each planetary gear, and each planetary gear periphery is engaged with a ring gear
Connect；
Described motor is turbine pneumatic motor, and it includes turbine output shaft, the turbine being located on described turbine output shaft, described
Sun gear is positioned at described turbine output shaft one end, and forms integrative-structure with described turbine output shaft, and described line shaft is with described
Planet carrier is wholely set, and described line shaft outfan is provided with impeller blade；
Described motor or be volume pneumatic vane motor, it includes blade rotor axle, described blade rotor axle outfan
Being connected with described sun gear, described line shaft is wholely set with described planet carrier, and described line shaft outfan is provided with impeller blade；
Described motor or be volume gear-type pneumatic motor, it includes gear-type rotor axle, described gear-type rotor axle outfan
Being connected with described sun gear, described line shaft is wholely set with described planet carrier, and described line shaft outfan is provided with impeller blade.
Bi-energy pneumatic submersible pump for mine the most according to claim 1, it is characterised in that on described turbine output shaft respectively
It is provided with turbine output shaft upper bearing (metal) and turbine output shaft lower bearing.
Bi-energy pneumatic submersible pump for mine the most according to claim 1, it is characterised in that on the armature spindle of described motor all
It is provided with armature spindle upper bearing (metal) and armature spindle lower bearing.
Bi-energy pneumatic submersible pump for mine the most according to claim 1, it is characterised in that be respectively equipped with on described planet carrier
Planet carrier upper bearing (metal) and planet carrier lower bearing.
Bi-energy pneumatic submersible pump for mine the most according to claim 1, it is characterised in that described planetary gear is provided with planet
Wheel support upright.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210465549.9A CN102979735B (en) | 2012-11-19 | 2012-11-19 | Bi-energy pneumatic submersible pump for mine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210465549.9A CN102979735B (en) | 2012-11-19 | 2012-11-19 | Bi-energy pneumatic submersible pump for mine |
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| CN102979735A CN102979735A (en) | 2013-03-20 |
| CN102979735B true CN102979735B (en) | 2016-12-21 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10527052B2 (en) | 2014-07-10 | 2020-01-07 | Dab Pumps S.P.A. | Centrifugal pump of the submersed or submersible type |
| CN215333475U (en) * | 2021-07-23 | 2021-12-28 | 浙江乐蛙泵业有限公司 | Multistage submersible pump capable of changing water flow rate for well |
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| GB756665A (en) * | 1953-04-18 | 1956-09-05 | Self Priming Pump & Eng Co Ltd | Improvements in or relating to control means for motor-driven pumps |
| EP0038618A1 (en) * | 1980-04-21 | 1981-10-28 | Wilden Pump & Engineering Co., Inc. | Actuator valve |
| CN102135101A (en) * | 2011-04-15 | 2011-07-27 | 黄道兴 | Pneumatic motor submersible pump |
| CN201925177U (en) * | 2011-01-25 | 2011-08-10 | 南京蓝深制泵集团股份有限公司 | Submersible through-flow pump with planetary gear reducing mechanism |
| CN102588295A (en) * | 2012-03-02 | 2012-07-18 | 常州窦氏气动机械有限公司 | Pneumatic water pump |
| CN102588296A (en) * | 2012-03-09 | 2012-07-18 | 常州信息职业技术学院 | Novel turbo-type pneumatic submersible pump with multiple nozzles |
| CN202926651U (en) * | 2012-11-19 | 2013-05-08 | 常州窦氏气动机械有限公司 | Dual-power mining pneumatic diving pump |
-
2012
- 2012-11-19 CN CN201210465549.9A patent/CN102979735B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB756665A (en) * | 1953-04-18 | 1956-09-05 | Self Priming Pump & Eng Co Ltd | Improvements in or relating to control means for motor-driven pumps |
| EP0038618A1 (en) * | 1980-04-21 | 1981-10-28 | Wilden Pump & Engineering Co., Inc. | Actuator valve |
| CN201925177U (en) * | 2011-01-25 | 2011-08-10 | 南京蓝深制泵集团股份有限公司 | Submersible through-flow pump with planetary gear reducing mechanism |
| CN102135101A (en) * | 2011-04-15 | 2011-07-27 | 黄道兴 | Pneumatic motor submersible pump |
| CN102588295A (en) * | 2012-03-02 | 2012-07-18 | 常州窦氏气动机械有限公司 | Pneumatic water pump |
| CN102588296A (en) * | 2012-03-09 | 2012-07-18 | 常州信息职业技术学院 | Novel turbo-type pneumatic submersible pump with multiple nozzles |
| CN202926651U (en) * | 2012-11-19 | 2013-05-08 | 常州窦氏气动机械有限公司 | Dual-power mining pneumatic diving pump |
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| CN102979735A (en) | 2013-03-20 |
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