CN107387355A - Tooth fans rack-and-pinion reciprocating pump - Google Patents
Tooth fans rack-and-pinion reciprocating pump Download PDFInfo
- Publication number
- CN107387355A CN107387355A CN201710780250.5A CN201710780250A CN107387355A CN 107387355 A CN107387355 A CN 107387355A CN 201710780250 A CN201710780250 A CN 201710780250A CN 107387355 A CN107387355 A CN 107387355A
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- Prior art keywords
- rack
- tooth
- fan
- reciprocating pump
- input shaft
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The present invention relates to a kind of tooth to fan rack-and-pinion reciprocating pump, is mainly made up of frame, input shaft, tooth fan, rack assembly, guide rail, piston and fluid cylinder etc..Wherein, input shaft is arranged in frame by bearing, and fan with teeth is installed on input shaft, and tooth fan is engaged with rack assembly, and rack assembly is placed between upper and lower rails.The tooth fan has the part control of the gear teeth in 160 °~165 ° angles of circumference, and tooth is fanned between first tooth and root circle by smooth arc transition；The rack assembly is made up of upper rack, lower rack and rack connector, and upper and lower rack both-side ends leave the smooth gap of certain distance, and piston rod is fixedly connected with rack assembly one end；The structure type that the reciprocating pump hydraulic-end fluid cylinder is arranged using double acting single-sided arrangement or single-acting Double-cylinder symmetrical.When mechanism works, fanned by tooth and engaged with the alternating of upper and lower rack to promote piston reciprocating.The present invention is simple in construction, compact, takes up space small, and system effectiveness is high, and pump pressure and pumpage fluctuation are small.
Description
Technical field
The present invention relates to a kind of tooth of the industries such as oil, chemical industry, mine to fan rack-and-pinion reciprocating pump.
Background technology
Reciprocating pump, can according to the difference of its operating mechanism contacted with pumped (conveying) medium as the pump machines occurred earliest
It is divided into piston pump and plunger pump, it is suitable to convey the high-pressure fluid mediums such as various high viscositys, rotten candle property, its efficiency high, workability
Can be good.Therefore, the every field of industrial quarters is up to the present still widely used for, is especially occupied in petroleum drilling engineering
At a relatively high status.In recent years, due to the needs that oil drilling and DP technology develop, oilfield reciprocating pump is in performance and product
There is further raising in terms of kind.Meanwhile in order to adapt to the poor working conditions of field pump, in structure, material, manufacture work
Skill, even action principle aspect, also all there occurs new change.
Reciprocating pump it is various in style and various informative, according to the difference of power end structure, be summed up, domestic and international reciprocating pump
Structure be broadly divided into four classes：Crank piston rod mechanism reciprocating pump, cam mechanism reciprocating pump, hydraulic reciprocating pump and straight-line electric
Machine reciprocating pump.
Crank piston rod mechanism reciprocating pump, it by crank piston rod by the convert rotational motion of motor is piston that its principle, which is,
Reciprocating motion, transmission efficiency is low, and flow and pressure oscillation are larger.Cam mechanism reciprocating pump is by the special profile of cam
Line, by the reciprocating motion that the convert rotational motion of cam is piston, compact-sized, flow and pressure are constant, but cam profile
Processing difficulties, big load lower cam profile wear is serious, and the service life of pump is low.Hydraulic reciprocating pump is derived from oilfield to past
Multiple pump discharge head requires to improve constantly and a kind of caused new pump.The pump uses Driven by Hydraulic Cylinder, hydraulic control, passes through
Pressure energy is converted into the mechanical energy of piston by hydraulic cylinder, it is easy to accomplish long stroke, low jig frequency, constant pressure and permanent discharge capacity, but including
Complete machine structure including large hydraulic station is complicated, high to control system requirement, and cost is high, and reliability in the presence of a harsh environment is low.
Straight line motor reciprocative pump is to make straight reciprocating motion by linear motor direct drive piston, flow and pressure is constant, easy realization
Long stroke, low jig frequency.But due to linear motor own structural characteristics, efficiency pole when realizing the high thrust required for reciprocating pump
Low, application receives larger limitation.
With the development of industrial technology, requirement to reciprocating pump also more and more higher.Energy-efficient, flow and pressure fluctuation
Small, consumable accessory long lifespan, commutation control is simple, reliability is high, small volume, it is in light weight be nowadays reciprocating pump design pursuit mesh
Mark.
The piston pump of a kind of gear, rack-driving disclosed in CN89216186.8, its power end is mainly by semi-circle gear, tooth
Bar assembly, slideway etc. form, and rack assembly is in " Qian " type mount structure, and " Qian " type frame bottom connects piston.When mechanism works, pass through
Semi-circle gear engages with the rack on " Qian " type frame carrys out band piston realization reciprocating motion.Tooth fan is semi-circle gear in the structure,
During work commutation, easily engaged simultaneously with both sides rack and interfere phenomenon；Rack assembly is " Qian " type mount structure, structural strength
Low, bearing capacity is low, is not suitable for high-power reciprocating pump；And the piston pump power source is animal power or manpower, for pump pressure and discharge capacity
It is required that higher industrial reciprocating pump, the high pressure of fluid end can fan to tooth and produce huge impact when the pump commutates, and cause half knuckle-tooth
The gear teeth damage of wheel.
The content of the invention
The present invention is directed to propose a kind of new reciprocating pump, i.e., fan rackwork by tooth is by the convert rotational motion of motor
The reciprocating motion of piston, and can realize that motor continuously runs situation lower piston and smoothly commutated, when avoiding commutating suffered by tooth fan
Enormous impact, so as to realize small reciprocal pump discharge and pressure oscillation, consumable accessory long lifespan, commutation control is simple, reliability is high,
Small volume, in light weight pursue a goal.
To achieve the above object, present invention employs following technical scheme.
Tooth of the present invention fans rack-and-pinion reciprocating pump, mainly by frame, input shaft, tooth fan, rack assembly and guide rail, piston, work
Stopper rod, double acting fluid cylinder etc. are formed.The input shaft is connected by V belt translation with motor, and input shaft is fixedly mounted on by bearing
In frame, fan with teeth is installed on the input shaft of frame intracavitary, tooth fan engages with rack assembly, rack assembly be placed in upper/lower guide it
Between, rack assembly one end is fixedly connected with piston rod, and guide rail is bolted in frame.
The tooth fan is incomplete tooth gear, and its toothless part arc radius is less than or equal to Gear Root radius of circle.Tooth
Fan in rotary course, when being engaged with upper rack, promote rack assembly to be moved to a direction, when being engaged with lower rack, promote tooth
Bar assembly moves round about.Tooth is fanned in continuous rotary course, is alternately engaged with the upper and lower rack in rack assembly, so as to
By the reciprocating motion that the convert rotational motion of input shaft is piston.During work, to prevent tooth fan with upper and lower two rack while nibbling
Close, interference situation occur, the part that tooth fan there are the gear teeth can be controlled in 160 °~165 ° angles of circumference, and tooth fans first tooth and without teeth portion
By smooth arc transition between cyclotomy arc, it is disengaged from and reenters with other side rack to engage with side rack in tooth fan
When, can by smooth arc transition to reduce engagement when impact, i.e. tooth fan with engaging for rack is a progressive process, rather than
Instantaneous engaging-in rigid shock process.
The rack assembly is made up of upper rack, lower rack and rack connector, and upper and lower rack both-side ends leave necessarily
The smooth gap of distance.Whole rack assembly is a rectangular frame structure, can greatly increase the bearing capacity of rack assembly and make
Use the life-span；Rack assembly one end is fixedly connected with piston rod；Rack assembly is placed between upper/lower guide and coordinated with it, guide rail pair
Rack assembly plays guiding and supporting role.
The structure type that the reciprocating pump hydraulic-end fluid cylinder is arranged using double acting single-sided arrangement or single-acting Double-cylinder symmetrical.
When tooth fan be just disengaged from side rack and with other side rack not yet entrance is engaged when, whole rack assembly and piston
In one kind without restrained condition, if single-acting cylinder, the pressure that discharge opeing stroke terminates instantaneously, to act on piston can cause piston
And rack assembly has a displacement on fluid end Fluid pressure action direction, during so as to cause next position, tooth fan and tooth
Bar impacts excessive when normally can not engage or engage.After above-mentioned hydraulic cylinder structure form, by taking double acting cylinder single-sided arrangement as an example,
When rodless cavity discharge opeing terminates moment, rod chamber imbibition terminates, when tooth fan is in disengaged position with upper and lower rack, in rodless cavity
Pushed at high pressure piston moved to rod chamber, raise in rod chamber fluid pressure, height during so as to relax commutation in rodless cavity
Fluid power caused by pressure impacts, and solves the problems, such as tooth fan rack improper engagement during commutation or is impacted when engaging excessive.On meanwhile
The smooth gap for the certain distance that lower rack both-side ends are stayed, it is allowed to which the hour rack component that commutates has one before not engaged with tooth fan
The reverse movement of set a distance, so that it is guaranteed that whole mechanism normally can smoothly be run.The structure of single-acting Double-cylinder symmetrical arrangement
Form role is identical with above-mentioned principle, repeats no more.
Rackwork is fanned as an elementary cell using the structure type of double acting cylinder single-sided arrangement and a tooth, list can be formed
Cylinder, twin-tub, the multi throw reciprocating pump of three cylinders and the above；With the structure type of single-acting Double-cylinder symmetrical arrangement and a tooth fan rack machine
Structure is an elementary cell, can form the multi throw reciprocating pump of twin-tub, four cylinders, six cylinders and above even number cylinder.During two unit combinations,
Two teeth fan on input shaft is arranged using 180 ° of phase differences；During three unit combinations, three teeth fan on input shaft uses
120 ° of phase difference arrangements；During four unit combinations, four teeth fan on input shaft is using 90 ° or 180 ° of phase difference arrangements；Five
When unit combines, five teeth fan on input shaft is arranged using 72 ° of phase differences.
The beneficial effects of the invention are as follows：（1）Compared with conventional reciprocating pump, structure more simple and compact, take up space smaller；（2）
Long stroke, low jig frequency easily are realized, the volumetric efficiency of reciprocating pump can be increased substantially；（3）Pump pressure and pumpage fluctuation are small；（4）
Rack-driving mode, the transmission efficiency of reciprocating pump system are fanned using tooth；（5）Compared with conventional tooth fans rack changement, liquid
The structure type of double acting single-sided arrangement or single-acting Double-cylinder symmetrical arrangement used by the fluid cylinder of power end, can effectively solve tooth fan tooth
Bar mechanism commutate when improper engagement or engagement when impact the problem of excessive.
Brief description of the drawings
Fig. 1 is operation principle schematic diagram of the present invention.
Fig. 2 is power end main view profile of the present invention.
Fig. 3 is transmission scheme schematic diagram of the present invention.
Tooth fans the rackwork course of work schematic diagram when Fig. 4 is fluid cylinder double acting single-sided arrangement of the present invention.
Fig. 5 is fluid cylinder single-acting Double-cylinder symmetrical arrangement schematic diagram of the present invention.
Fig. 6 is that tooth fan of the present invention is disengaged from instantaneous state schematic diagram with rack.
1. double acting fluid cylinder in figure, 2. pistons, 3. piston rods, 4. frames, 5. left side rack connectors, 6. rack assemblies,
7. tooth is fanned, 8. right side rack connectors, 9. guide rails, 10. input shafts, 11. big belt wheels, 12. small pulleys, 13. motors, tooth on 14.
Bar, 15. times racks, 16. rack tip gaps, 17. single-acting fluid cylinders.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Referring to accompanying drawing 1~6, tooth of the present invention fans rack-and-pinion reciprocating pump, mainly by frame（4）, input shaft（10）, tooth fan（7）、
Rack assembly（6）, guide rail（9）, piston rod（3）, piston（2）And double acting fluid cylinder（1）Deng composition.Wherein, input shaft（10）It is logical
Cross bearing and be fixedly mounted on frame（4）On, the input shaft passes through V belt translation（11、12）With motor（13）It is connected, frame intracavitary
Input shaft on fan with teeth is installed（7）, tooth fan（7）With rack assembly（6）Engagement, rack assembly（6）It is placed in upper/lower guide（9）It
Between, upper/lower guide is bolted in frame.
The tooth fan（7）With rack assembly（6）Engagement.In tooth fan rotary course, when tooth is fanned（7）With upper rack（14）Engagement
When, promote rack assembly（6）Moved to a direction, tooth fan（7）With lower rack（15）During engagement, rack assembly is promoted（6）To
Opposite direction moves.Tooth is fanned（7）In continuous rotary course, with the upper and lower rack in rack assembly（14、15）Alternately engage, from
And by input shaft（10）Convert rotational motion be piston（2）Reciprocating motion.
During double acting cylinder single-sided arrangement, there is following carrying out practically scheme.
Referring to accompanying drawing 1~4, motor（13）During operation, power is exported, through V belt translation（14、15）Input is delivered to after deceleration
Axle（10）, input shaft（10）Band moving teeth is fanned（7）Rotate.
Such as Fig. 4（a）It is shown, exemplified by rotating clockwise, tooth fan（7）The gear teeth and rack assembly（6）Downside rack
（15）Engagement, promote rack assembly（6）And piston（2）To left movement, rodless cavity discharge liquid, rod chamber suction liquid.
Such as Fig. 4（b）It is shown, work as piston（2）When row is to left dead-centre position, rodless cavity discharge opeing terminates, and rod chamber imbibition terminates,
Tooth is fanned（7）With upper and lower rack（14、15）It is disengaged from.Now, the pushed at high pressure piston in rodless cavity moves to rod chamber,
Raise the fluid pressure in rod chamber, fluid power impact, solves and change caused by high pressure during so as to relax commutation in rodless cavity
To when the tooth improper engagement of fan rack or impact the problem of excessive during engagement.Meanwhile upper and lower rack（14、15）Both-side ends institute
The smooth gap of the certain distance stayed（16）, it is allowed to commutate hour rack component（6）Do not fanned with tooth（7）There is certain distance before engagement
Reverse movement, so that it is guaranteed that whole mechanism normally can smoothly be run.
Such as Fig. 4（c）It is shown, tooth fan（7）Continue to rotate clockwise, its gear teeth starts and rack assembly（6）Upside rack
（14）Into engagement, rack assembly is promoted（6）And piston（2）Move right, realize commutation.Now, rodless cavity suction liquid, has
Rod cavity discharges liquid.
Such as Fig. 4（d）It is shown, work as piston（2）When row is to right dead-centre position, rodless cavity imbibition terminates, and rod chamber discharge opeing terminates,
Tooth is fanned（7）With upper and lower rack（14、15）It is disengaged from.Now, the pushed at high pressure piston in rod chamber moves to rodless cavity,
Raise the fluid pressure in rodless cavity, fluid power impact, solves and change caused by high pressure during so as to relax commutation in rod chamber
To when the tooth improper engagement of fan rack or impact the problem of excessive during engagement.Meanwhile upper and lower rack（14、15）Both-side ends institute
The smooth gap of the certain distance stayed（16）, it is allowed to commutate hour rack component（6）Do not fanned with tooth（7）There is certain distance before engagement
Reverse movement, so that it is guaranteed that whole mechanism normally can smoothly be run.
So far, tooth fan rackwork completes a working cycles.With the progress of motion, tooth fan（7）With rack assembly（6）
Downside rack（15）Engagement is initially entered again, promotes rack assembly to start to left movement, second working cycles.Then, it is whole
Individual power end just does cycle movement with such a pattern, promotes piston reciprocating incessantly.
When single-acting cylinder is arranged symmetrically, there is following carrying out practically scheme.
As shown in figure 5, mechanism work when, side fluid cylinder suction liquid, opposite side fluid cylinder discharge liquid, its course of work and
It is identical when principle is with double acting cylinder single-sided arrangement, repeat no more.Unlike, when side fluid cylinder discharge opeing terminates moment, separately
Side fluid cylinder imbibition terminates, tooth fan（7）With upper and lower rack（14、15）When being in disengaged position, the pushed at high pressure in discharge opeing cylinder
Piston（2）And rack assembly（6）To the lateral movement of imbibition cylinder one, fluid pressure in imbibition cylinder is raised, arranged during so as to relax commutation
Fluid power caused by high pressure in fluid cylinder impacts, and impacts excessive ask when tooth fans the improper engagement of rack or engagement when solving commutation
Topic.Meanwhile upper and lower rack（14、15）The smooth gap for the certain distance that both-side ends are stayed（16）, it is allowed to commutate hour rack group
Part（6）Do not fanned with tooth（7）There is the reverse movement of certain distance before engagement, so that it is guaranteed that whole mechanism normally can be transported smoothly
OK.
Claims (6)
1. a kind of tooth fans rack-and-pinion reciprocating pump, mainly by frame（4）, input shaft（10）, tooth fan（7）, rack assembly（6）And guide rail
（9）, piston（2）, piston rod（3）, double acting fluid cylinder（1）Deng composition, it is characterised in that：Input shaft（10）Fixed and pacified by bearing
Mounted in frame（4）On, fan with teeth is installed on the input shaft of frame intracavitary（7）, tooth fan（7）With rack assembly（6）Engagement, rack group
Part（6）It is placed in upper/lower guide（9）Between, guide rail is bolted in frame.
2. tooth according to claim 1 fans rack-and-pinion reciprocating pump, it is characterised in that：The tooth fan（7）For incomplete tooth tooth
Wheel, there is gear tooth portions control in 160 °~165 ° angles of circumference, tooth is fanned between first tooth and root circle by smooth arc transition.
3. tooth according to claim 1 fans rack-and-pinion reciprocating pump, it is characterised in that：The rack assembly（6）By upper rack
（14）, lower rack（15）And rack connector（5、8）Form, upper and lower rack both-side ends leave the smooth gap of certain distance
（16）.
4. tooth according to claim 1 fans rack-and-pinion reciprocating pump, it is characterised in that：The reciprocating pump hydraulic-end fluid cylinder uses
The structure type of double acting single-sided arrangement or single-acting Double-cylinder symmetrical arrangement.
5. tooth according to claim 1 fans rack-and-pinion reciprocating pump, it is characterised in that：With the structure shape of double acting single-sided arrangement
Formula is an elementary cell, can form the multi throw reciprocating pump of single cylinder, twin-tub, three cylinders and the above；Arranged with single-acting Double-cylinder symmetrical
Structure type be an elementary cell, the multi throw reciprocating pump of twin-tub, four cylinders, six cylinders and above even number cylinder can be formed.
6. tooth according to claim 1 fans rack-and-pinion reciprocating pump, it is characterised in that：During two unit combinations, on input shaft
Two teeth fan arranged using 180 ° of phase differences；During three unit combinations, three teeth fan on input shaft uses 120 ° of phase differences
Arrangement；During four unit combinations, four teeth fan on input shaft is using 90 ° or 180 ° of phase difference arrangements；During five unit combinations,
Five teeth fan on input shaft is arranged using 72 ° of phase differences.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710780250.5A CN107387355A (en) | 2017-09-01 | 2017-09-01 | Tooth fans rack-and-pinion reciprocating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710780250.5A CN107387355A (en) | 2017-09-01 | 2017-09-01 | Tooth fans rack-and-pinion reciprocating pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107387355A true CN107387355A (en) | 2017-11-24 |
Family
ID=60347516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710780250.5A Pending CN107387355A (en) | 2017-09-01 | 2017-09-01 | Tooth fans rack-and-pinion reciprocating pump |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107795449A (en) * | 2017-11-28 | 2018-03-13 | 西南石油大学 | A kind of tooth fan rack-and-pinion reciprocating pump of cam limit |
| CN108385695A (en) * | 2018-05-02 | 2018-08-10 | 张家港江苏科技大学产业技术研究院 | Foundation pit supporting construction and its construction method |
| CN108424198A (en) * | 2018-06-08 | 2018-08-21 | 佛山市顺德区唯点工业设计有限公司 | A kind of energy-efficient fowl and animal excrement Zymolysis Equipment |
| CN108691736A (en) * | 2018-05-10 | 2018-10-23 | 西南交通大学 | A kind of big stroke isolation plunger pump of pulse free |
| CN108757364A (en) * | 2018-05-23 | 2018-11-06 | 河南科技大学 | A kind of reciprocating liquid pump by rack pinion |
| CN109058405A (en) * | 2018-09-06 | 2018-12-21 | 胡捷 | A kind of compressor drive and compressor |
| CN110318710A (en) * | 2019-06-29 | 2019-10-11 | 苏州鼎智瑞光智能科技有限公司 | A kind of partial gear reversing-type pumping unit and working method |
| CN110454353A (en) * | 2019-09-16 | 2019-11-15 | 西南石油大学 | Composite drive reciprocating pump |
| CN112228299A (en) * | 2020-09-03 | 2021-01-15 | 李明 | High-efficient reciprocal plunger type high pressure water pump |
| CN112696349A (en) * | 2020-12-28 | 2021-04-23 | 台州市蒙花机械有限公司 | Plunger pump structure |
| CN113107555A (en) * | 2021-04-27 | 2021-07-13 | 山东安益矿用设备股份有限公司 | Temporary support device for coal mine tunneling |
| CN113107553A (en) * | 2021-04-27 | 2021-07-13 | 山东安益矿用设备股份有限公司 | Internal injection type single hydraulic prop |
| CN113389703A (en) * | 2021-06-29 | 2021-09-14 | 顾亚辉 | Double-cylinder vacuum pump |
| CN113482877A (en) * | 2021-07-19 | 2021-10-08 | 燕山大学 | Non-circular gear driven low-pulsation three-cylinder reciprocating pump |
| CN113523971A (en) * | 2021-09-15 | 2021-10-22 | 南通同贵模具科技有限公司 | Automatic grinding machine for machining surface of die |
| US20220268264A1 (en) * | 2019-01-31 | 2022-08-25 | Saemchan Energy Co., Ltd. | Hydrogen gas compression device |
| CN115717582A (en) * | 2022-11-28 | 2023-02-28 | 德帕姆(杭州)泵业科技有限公司 | Reciprocating pump |
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| CN107795449B (en) * | 2017-11-28 | 2024-03-12 | 西南石油大学 | Cam-limited toothed sector rack type reciprocating pump |
| CN107795449A (en) * | 2017-11-28 | 2018-03-13 | 西南石油大学 | A kind of tooth fan rack-and-pinion reciprocating pump of cam limit |
| CN108385695A (en) * | 2018-05-02 | 2018-08-10 | 张家港江苏科技大学产业技术研究院 | Foundation pit supporting construction and its construction method |
| CN108691736B (en) * | 2018-05-10 | 2019-08-20 | 西南交通大学 | A kind of big stroke isolation plunger pump of pulse free |
| CN108691736A (en) * | 2018-05-10 | 2018-10-23 | 西南交通大学 | A kind of big stroke isolation plunger pump of pulse free |
| CN108757364A (en) * | 2018-05-23 | 2018-11-06 | 河南科技大学 | A kind of reciprocating liquid pump by rack pinion |
| CN108757364B (en) * | 2018-05-23 | 2019-10-29 | 河南科技大学 | A kind of reciprocating liquid pump by rack pinion |
| CN108424198A (en) * | 2018-06-08 | 2018-08-21 | 佛山市顺德区唯点工业设计有限公司 | A kind of energy-efficient fowl and animal excrement Zymolysis Equipment |
| CN109058405A (en) * | 2018-09-06 | 2018-12-21 | 胡捷 | A kind of compressor drive and compressor |
| CN109058405B (en) * | 2018-09-06 | 2021-03-02 | 胡捷 | Compressor driver and compressor |
| US20220268264A1 (en) * | 2019-01-31 | 2022-08-25 | Saemchan Energy Co., Ltd. | Hydrogen gas compression device |
| CN110318710A (en) * | 2019-06-29 | 2019-10-11 | 苏州鼎智瑞光智能科技有限公司 | A kind of partial gear reversing-type pumping unit and working method |
| CN110318710B (en) * | 2019-06-29 | 2021-06-25 | 苏州鼎智瑞光智能科技有限公司 | Incomplete gear reversing type oil pumping unit and working method |
| CN110454353A (en) * | 2019-09-16 | 2019-11-15 | 西南石油大学 | Composite drive reciprocating pump |
| CN110454353B (en) * | 2019-09-16 | 2024-04-09 | 西南石油大学 | Composite driving reciprocating pump |
| CN112228299A (en) * | 2020-09-03 | 2021-01-15 | 李明 | High-efficient reciprocal plunger type high pressure water pump |
| CN112696349A (en) * | 2020-12-28 | 2021-04-23 | 台州市蒙花机械有限公司 | Plunger pump structure |
| CN113107555B (en) * | 2021-04-27 | 2023-01-31 | 山东安益矿用设备股份有限公司 | Temporary support device for coal mine tunneling |
| CN113107553A (en) * | 2021-04-27 | 2021-07-13 | 山东安益矿用设备股份有限公司 | Internal injection type single hydraulic prop |
| CN113107555A (en) * | 2021-04-27 | 2021-07-13 | 山东安益矿用设备股份有限公司 | Temporary support device for coal mine tunneling |
| CN113389703A (en) * | 2021-06-29 | 2021-09-14 | 顾亚辉 | Double-cylinder vacuum pump |
| CN113482877A (en) * | 2021-07-19 | 2021-10-08 | 燕山大学 | Non-circular gear driven low-pulsation three-cylinder reciprocating pump |
| CN113523971A (en) * | 2021-09-15 | 2021-10-22 | 南通同贵模具科技有限公司 | Automatic grinding machine for machining surface of die |
| CN115717582A (en) * | 2022-11-28 | 2023-02-28 | 德帕姆(杭州)泵业科技有限公司 | Reciprocating pump |
| CN115717582B (en) * | 2022-11-28 | 2024-02-27 | 德帕姆(杭州)泵业科技有限公司 | Reciprocating pump |
| WO2024113535A1 (en) * | 2022-11-28 | 2024-06-06 | 德帕姆(杭州)泵业科技有限公司 | Reciprocating pump |
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Application publication date: 20171124 |