CN113357119A - Single-cylinder crankshaft-free servo plunger pump and module thereof - Google Patents
Single-cylinder crankshaft-free servo plunger pump and module thereof Download PDFInfo
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- CN113357119A CN113357119A CN202110814963.5A CN202110814963A CN113357119A CN 113357119 A CN113357119 A CN 113357119A CN 202110814963 A CN202110814963 A CN 202110814963A CN 113357119 A CN113357119 A CN 113357119A
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- screw rod
- plunger pump
- speed reducer
- pump
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- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 39
- 230000007246 mechanism Effects 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000007789 sealing Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 description 4
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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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
- 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
-
- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
-
- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
- F04B53/162—Adaptations of cylinders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention provides a single-cylinder crankshaft-free servo plunger pump which comprises a high-pressure hydraulic end component, a power mechanism, a speed reducing mechanism component and a mounting component, wherein the high-pressure hydraulic end component comprises a high-pressure check valve group and a low-pressure check valve group; the power mechanism is used for providing power support; the speed reducing mechanism assembly comprises a speed reducer, a screw rod nut and a screw rod; the mounting assembly comprises a thrust bearing mounting seat, a radial bearing mounting seat, a pump head connecting block and a plunger lead screw connecting block. By adopting a mode of canceling a crankshaft and a connecting rod mechanism, modularizing a single plunger pump or jointly controlling a plurality of plunger pumps, the invention has the advantages of reducing the production cost of the prior art, and achieving the purpose of exponentially prolonging the service lives of the sealing, the valve plate, the valve core and the plunger of the plunger pump by a mode of accurately controlling the flow and the pressure through electric control.
Description
Technical Field
The invention relates to the technical field of plunger pumps, in particular to a single-cylinder crankshaft-free servo plunger pump and a module thereof.
Background
The stroke of the existing plunger pump is limited by the eccentricity of a crankshaft, and the size of the crankshaft is limited by a crankcase and a processing level. The flow of a single pump controls the pressure and the flow of the pump by the rotating speed of the crankshaft, and when the pressure is high and the flow is large, the rotating speed of the crankshaft is high, the inertia of the crankshaft is large, the sealing is easy to damage, the service life of the whole equipment is short, and the precision is poor. In addition, the pressure flow of a single pump cannot be accurately controlled at present. Meanwhile, the existing high-pressure large-flow plunger pump is generally designed to have the problems of complex processing and short sealing life.
The technology of plunger pump in the field of known ultra-high pressure (more than or equal to 200MPa) and large flow (300L/min) is monopolized abroad.
Therefore, based on the current situation, the invention needs to invent a device which cancels a crankshaft and a connecting rod mechanism, reduces the production cost, and can accurately control the flow and the pressure through electric control, thereby exponentially prolonging the service lives of the seal, the valve plate, the valve core and the plunger of the plunger pump.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a single-cylinder crankshaft-free servo plunger pump and a module thereof, and aims to solve the problems in the prior art.
In order to achieve the purpose, the invention is realized by the following technical scheme: a single-cylinder crankshaft-free servo plunger pump comprises a high-pressure hydraulic end component, a power mechanism, a speed reducing mechanism component and a mounting component, wherein,
the high-pressure hydraulic end assembly comprises a high-pressure check valve group and a low-pressure check valve group, and the high-pressure check valve group is connected with an external high-pressure water pump outlet and is used for generating high pressure in the single-cylinder crankshaft-free servo plunger pump cavity; the low-pressure check valve group is used for controlling the closing of the low-pressure water inlet when high pressure is generated in the single-cylinder crankshaft-free servo plunger pump cavity; the power mechanism is used for providing power support; the speed reducing mechanism assembly comprises a speed reducer, a screw rod nut and a screw rod; the mounting assembly comprises a thrust bearing mounting seat, a radial bearing mounting seat, a pump head connecting block and a plunger lead screw connecting block,
the power mechanism is sequentially connected with the speed reducer, the thrust bearing mounting seat and the radial bearing mounting seat to form an axial thrust;
the screw rod penetrates through the speed reducer, the thrust bearing mounting seat and the radial bearing mounting seat in sequence along the axial thrust force application direction and is connected to the speed reducer, the thrust bearing mounting seat and the radial bearing mounting seat in a rotating mode, and one end, away from the speed reducer, of the screw rod is connected with the plunger through a plunger screw rod connecting block and used for forming reciprocating motion of the plunger;
plunger movable mounting combines and in the airtight cavity that forms in pump head connecting block and radial bearing mount pad, and high pressure check valves and low pressure check valves are connected to the pump head connecting block to be used for accomplishing the state of opening and shutting and switching over of high pressure check valves and low pressure check valves through plunger reciprocating motion.
As an improvement of the single-cylinder crankshaft-free servo plunger pump, the speed reducer is rotationally connected with the screw rod through a flat key, so that the speed reducer can transmit torque, move and be detached and connected with the screw rod, and meanwhile, the screw rod is guided.
As an improvement of the single-cylinder crankshaft-free servo plunger pump, a screw rod nut is arranged at the joint of the screw rod and the radial bearing mounting seat and used for changing the rotary motion of the screw rod formed along the axial thrust force application direction into linear motion so as to achieve the reciprocating motion of the plunger relative to the cavity.
In a possible implementation of the single-cylinder crankshaft-free servo plunger pump proposed by the invention, the plunger and the screw rod are in the same axis.
In a possible implementation manner of the single-cylinder crankshaft-free servo plunger pump, the power mechanism is a servo motor or a stepping motor.
In a possible implementation manner of the single-cylinder crankshaft-free servo plunger pump, the speed reducer adopts a hollow shaft type planetary speed reducer or a gear speed reducer or a belt speed reducer.
The single-cylinder crankshaft-free servo plunger pump further comprises a PLC, and the PLC is electrically connected with the servo motor or the stepping motor and used for accurately controlling the pressure flow of the single-cylinder crankshaft-free servo plunger pump.
As a second aspect of the present invention, a single-cylinder crankshaft-free servo plunger pump module is provided, which comprises a control system and a plurality of single-cylinder crankshaft-free servo plunger pumps electrically connected to the control system, wherein,
two single-cylinder crankshaft-free servo plunger pumps are connected in parallel;
the control system is executed by at least one of the PLC controllers to cause the at least one PLC controller to execute the reciprocating motion of the plunger of the single-cylinder crankless servo plunger pump.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention has the advantages of reducing the production cost of the prior art by adopting the modes of canceling a crankshaft and a connecting rod mechanism, modularizing a single plunger pump and jointly controlling a plurality of plunger pumps, and achieving the advantages of exponentially prolonging the service lives of the sealing, the valve plate, the valve core and the plunger of the plunger pump by adopting the mode of accurately controlling the flow and the pressure through electric control;
2. according to the invention, the stroke of the plunger is conveniently and rapidly changed by changing the program setting position, so that the flow of the plunger pump is precisely changed, on one hand, when the required pressure is determined, the plunger is determined, and the reciprocating motion frequency of the plunger can be reduced by changing the stroke of the plunger, so that the service life of a sealing element is prolonged, on the other hand, any number combination of the plungers can be realized, the spatial arrangement mode can be randomly selected and matched, and the device has the characteristics of convenience and flexibility in installation and high space utilization rate compared with the existing device under the same pressure and flow.
Drawings
The disclosure of the present invention is illustrated with reference to the accompanying drawings. It is to be understood that the drawings are designed solely for purposes of illustration and not as a definition of the limits of the invention, for which like reference numerals are used to indicate like parts. Wherein:
fig. 1 is a schematic structural diagram of a single-cylinder crankless servo plunger pump according to an embodiment of the present invention.
Reference numerals: the device comprises a power mechanism 1, a speed reducer 2, a thrust bearing mounting seat 3, a radial bearing mounting seat 4, a pump head connecting block 5, a screw rod 6, a flat key 7, a screw rod nut 8, a plunger screw rod connecting block 9, a plunger 10, a plunger 11, a high-pressure check valve bank and a low-pressure check valve bank 12.
Detailed Description
It is easily understood that according to the technical solution of the present invention, a person skilled in the art can propose various alternative structures and implementation ways without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as all of the present invention or as limitations or limitations on the technical aspects of the present invention.
As shown in fig. 1, as an embodiment of the present invention, the present invention provides a technical solution: a single-cylinder crankshaft-free servo plunger pump comprises a high-pressure hydraulic end component, a power mechanism 1, a speed reducing mechanism component and a mounting component, wherein,
the high-pressure hydraulic end assembly comprises a high-pressure check valve group 11 and a low-pressure check valve group 12, wherein the high-pressure check valve group 11 is connected with an external high-pressure water pump outlet and is used for generating high pressure in a single-cylinder crankshaft-free servo plunger pump cavity; the low-pressure check valve group 12 is used for controlling the closing of the low-pressure water inlet when high pressure is generated in the single-cylinder crankshaft-free servo plunger pump cavity; the power mechanism 1 is used for providing power support; the speed reducing mechanism assembly comprises a speed reducer 2, a screw rod nut 8 and a screw rod 6; the mounting assembly comprises a thrust bearing mounting seat 3, a radial bearing mounting seat 4, a pump head connecting block 5 and a plunger lead screw connecting block 9,
the power mechanism 1 is sequentially connected with the speed reducer 2, the thrust bearing mounting seat 3 and the radial bearing mounting seat 4 in sequence to form an axial thrust, and it can be understood that when the power mechanism 1 rotates forwards, the speed reducer 2 starts to rotate forwards synchronously, and then the screw rod nut 8 drives the speed reducer 2 to rotate forwards, so as to further force the screw rod 6 to rotate horizontally, when the circular motion of the power mechanism 1 is converted into an axial motion relatively parallel to the screw rod 6, the low-pressure check valve group 12 is closed, at the moment, the high-pressure check valve group 11 is opened, the screw rod 6 drives the plunger 10 to move along the advancing direction of the screw rod 6 under the thrust in the horizontal direction through the plunger screw rod connecting block 9, so as to achieve the purpose that high-pressure liquid is completely discharged, and finally when the screw rod 6 moves to the program position set by the PLC, when the power mechanism 1 rotates backwards, the speed reducer 2 starts to rotate backwards synchronously, and then the feed screw nut 8 is driven by the speed reducer 2 to rotate reversely, the feed screw 6 is further forced to rotate reversely and horizontally, when the circular motion of the power mechanism 1 is converted into the axial motion which is relatively parallel to the feed screw 6, the low-pressure check valve group 12 is opened, at the moment, the high-pressure check valve group 11 is closed, the feed screw 6 drives the plunger 10 to move along the reverse direction of the advancing of the feed screw 6 through the plunger feed screw connecting block 9 under the thrust of the reverse horizontal direction, so that low-pressure liquid enters the cavity, when the feed screw 6 moves to the program position set by the PLC, the power mechanism 1 rotates forwardly to reciprocate,
it should be noted that the screw rod 6 is sequentially connected to the speed reducer 2, the thrust bearing mounting seat 3 and the radial bearing mounting seat 4 in a penetrating manner along the axial thrust force application direction, and one end of the screw rod away from the speed reducer 2 is connected to the plunger 10 through the plunger screw rod connecting block 9 for forming the reciprocating motion of the plunger 10, it can be understood that, for example, from left to right in the horizontal direction, the power mechanism 1, the speed reducer 2, the thrust bearing mounting seat 3, the radial bearing mounting seat 4, the pump head connecting block 5, the plunger screw rod connecting block 9, the high-pressure check valve group 11 and the low-pressure check valve group 12 are sequentially connected in sequence,
plunger 10 movable mounting combines and in the airtight cavity that forms in pump head connecting block 5 and radial bearing mount pad 4, can understand, is used for saving low pressure liquid and high-pressure liquid in the cavity that forms, and pump head connecting block 5 connects high pressure check valves 11 and low pressure check valves 12 to be used for accomplishing opening and shutting and the switching of the state of closing of high pressure check valves 11 and low pressure check valves 12 through plunger 10 reciprocating motion.
It can be understood that the program setting position is changed through the PLC, the stroke of the plunger 10 is changed conveniently and quickly, and the flow of the plunger 10 pump is changed precisely, on one hand, when the required pressure is determined and the plunger 10 is determined, the reciprocating frequency of the plunger 10 can be reduced by changing the stroke of the plunger 10, so that the service life of a sealing element is prolonged, on the other hand, the number combination of any number of the plungers 10 can be realized, the spatial arrangement mode can be selected and matched at will, and the sealing element has the characteristics of convenience and flexibility in installation and high space utilization rate compared with the existing equipment under the same pressure and flow.
In an embodiment of the present invention, the speed reducer 2 is rotatably connected to the screw rod 6 through the flat key 7, so as to transmit torque, movement and detachment coupling of the screw rod 6 by the speed reducer 2, and guide the screw rod 6.
In an embodiment of the present invention, a lead screw nut 8 is disposed at a connection position of the lead screw 6 and the radial bearing mounting seat 4, and is used for changing a rotational motion of the lead screw 6 along an axial thrust force application direction into a linear motion, so as to achieve a reciprocating motion of the plunger 10 relative to the cavity.
It should be noted that the plunger 10 and the screw rod 6 are located on the same axis, the power mechanism 1 adopts a servo motor or a stepping motor, and the speed reducer 2 adopts a hollow shaft type planetary speed reducer or a gear speed reducer or a belt speed reducer.
In an embodiment of the present invention, the present invention further includes a PLC controller, the PLC controller is electrically connected to the servo motor or the stepping motor, so as to precisely control the pressure flow of the single-cylinder crankshaft-free servo plunger pump, it can be understood that the present invention has an advantage of reducing the production cost of the prior art by adopting a mode of canceling the crankshaft and the link mechanism, modularizing the single plunger pump, and jointly controlling the multiple plunger pumps, and the present invention has an advantage of doubly increasing the service lives of the seal, the valve plate, the valve core, and the plunger 10 of the plunger pump by electrically controlling the precise flow and pressure.
As a second aspect of the present invention, based on the above technical concept, a single-cylinder crankshaft-free servo plunger pump module is provided, which comprises a control system and a plurality of single-cylinder crankshaft-free servo plunger pumps electrically connected to the control system, wherein,
the two single cylinders are connected in parallel without crankshaft type servo plunger pumps, when in specific implementation, the flow of a plurality of modules which are connected in parallel and used for lifting a pump set is achieved through the modularization of the single plunger pump, the volume of the pump set is greatly reduced compared with that of a product with the same function, in addition, the integrated pump set can realize the single plunger individual control and the multi-plunger combined control, the integrated pump set can realize the advantages that when the single pump fails, the standby single pump is seamlessly switched, the integrated pump set can greatly increase the maintenance period,
meanwhile, the control system is executed by at least one PLC controller, so that the at least one PLC controller executes the reciprocating motion of the plunger of the single-cylinder crankshaft-free servo plunger pump, and the single-cylinder crankshaft-free servo plunger pump and the modularized integrated control are realized.
The technical scope of the present invention is not limited to the above description, and those skilled in the art can make various changes and modifications to the above-described embodiments without departing from the technical spirit of the present invention, and such changes and modifications should fall within the protective scope of the present invention.
Claims (8)
1. The utility model provides a single cylinder does not have servo plunger pump of bent axle formula which characterized in that: comprises a high-pressure hydraulic end component, a power mechanism, a speed reducing mechanism component and a mounting component, wherein,
the high-pressure hydraulic end assembly comprises a high-pressure check valve group and a low-pressure check valve group, and the high-pressure check valve group is connected with an external high-pressure water pump outlet and is used for generating high pressure in the single-cylinder crankshaft-free servo plunger pump cavity; the low-pressure check valve group is used for controlling the closing of the low-pressure water inlet when high pressure is generated in the single-cylinder crankshaft-free servo plunger pump cavity; the power mechanism is used for providing power support; the speed reducing mechanism assembly comprises a speed reducer, a screw rod nut and a screw rod; the mounting assembly comprises a thrust bearing mounting seat, a radial bearing mounting seat, a pump head connecting block and a plunger lead screw connecting block,
the power mechanism is sequentially connected with the speed reducer, the thrust bearing mounting seat and the radial bearing mounting seat to form an axial thrust;
the screw rod penetrates through the speed reducer, the thrust bearing mounting seat and the radial bearing mounting seat in sequence along the axial thrust force application direction and is connected to the speed reducer, the thrust bearing mounting seat and the radial bearing mounting seat in a rotating mode, and one end, away from the speed reducer, of the screw rod is connected with the plunger through a plunger screw rod connecting block and used for forming reciprocating motion of the plunger;
plunger movable mounting combines and in the airtight cavity that forms in pump head connecting block and radial bearing mount pad, and high pressure check valves and low pressure check valves are connected to the pump head connecting block to be used for accomplishing the switching of the state of opening and shutting of high pressure check valves and low pressure check valves through the reciprocating motion of plunger and close.
2. The single cylinder crankless servo plunger pump of claim 1, wherein: the speed reducer is rotationally connected with the screw rod through the flat key so as to achieve the purposes of transmitting torque, moving and disassembling connection of the screw rod by the speed reducer and guiding the screw rod.
3. The single cylinder crankless servo plunger pump of claim 1, wherein: and a screw rod nut is arranged at the joint of the screw rod and the radial bearing mounting seat and is used for changing the rotary motion of the screw rod formed along the axial thrust force application direction into linear motion so as to achieve the reciprocating motion of the plunger relative to the cavity.
4. The single cylinder crankless servo plunger pump of claim 1, wherein: the plunger and the screw rod are positioned on the same axis.
5. The single cylinder crankless servo plunger pump of claim 1, wherein: the power mechanism adopts a servo motor or a stepping motor.
6. The single cylinder crankless servo plunger pump of claim 1, wherein: the speed reducer adopts a hollow shaft type planetary speed reducer or a gear speed reducer or a belt speed reducer.
7. A single cylinder crankless servo plunger pump according to claim 1 or 5, characterized in that: the single-cylinder crankshaft-free servo plunger pump is characterized by further comprising a PLC, wherein the PLC is electrically connected with a servo motor or a stepping motor and used for accurately controlling the pressure flow of the single-cylinder crankshaft-free servo plunger pump.
8. A single cylinder crankless servo plunger pump module according to any of claims 1 to 7, characterized in that: comprises a control system and a plurality of single-cylinder crankless servo plunger pumps electrically connected with the control system, wherein,
two single-cylinder crankshaft-free servo plunger pumps are connected in parallel;
the control system is executed by at least one of the PLC controllers to cause the at least one PLC controller to execute the reciprocating motion of the plunger of the single cylinder crankless servo plunger pump of any of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110814963.5A CN113357119A (en) | 2021-07-19 | 2021-07-19 | Single-cylinder crankshaft-free servo plunger pump and module thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110814963.5A CN113357119A (en) | 2021-07-19 | 2021-07-19 | Single-cylinder crankshaft-free servo plunger pump and module thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113357119A true CN113357119A (en) | 2021-09-07 |
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| CN202110814963.5A Pending CN113357119A (en) | 2021-07-19 | 2021-07-19 | Single-cylinder crankshaft-free servo plunger pump and module thereof |
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| CN (1) | CN113357119A (en) |
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| US6234771B1 (en) * | 1998-06-02 | 2001-05-22 | Bayer Corporation | Precision pumping device |
| CN102953965A (en) * | 2012-10-25 | 2013-03-06 | 安徽皖仪科技股份有限公司 | High-voltage and constant-current pump using electronic cam technique to realize constant-current liquid conveying function |
| CN103967733A (en) * | 2014-04-24 | 2014-08-06 | 山东海燕医用材料制造有限公司 | Precision metering ceramic plunger liquid charge pump |
| CN105804961A (en) * | 2016-03-15 | 2016-07-27 | 北京星达科技发展有限公司 | Plunger pump transmission mechanism, high-pressure constant flow pump system and medium flow control method |
| CN106286197A (en) * | 2016-11-09 | 2017-01-04 | 北京工业大学 | One is done more physical exercises unit straight line motor drive type plunger displacement pump |
| CN205876633U (en) * | 2016-08-18 | 2017-01-11 | 重庆山城电器厂有限公司 | Mutual -inductor fills measuring pump device |
| CN106523318A (en) * | 2016-10-31 | 2017-03-22 | 深圳市世椿智能装备股份有限公司 | Two-way piston pump and control method thereof |
| CN106762509A (en) * | 2017-02-07 | 2017-05-31 | 筱净（上海）生物科技有限公司 | Liquid pump and liquid jettison system |
| CN210371052U (en) * | 2019-08-27 | 2020-04-21 | 江苏拓创科研仪器有限公司 | Constant-speed constant-pressure pump device |
| CN211287991U (en) * | 2019-12-05 | 2020-08-18 | 东莞市吉克尔自动化科技有限公司 | Check valve injection pump |
-
2021
- 2021-07-19 CN CN202110814963.5A patent/CN113357119A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0422767A (en) * | 1990-05-16 | 1992-01-27 | Aioi Seiki Kk | Plunger type hydraulic pump |
| JPH10169566A (en) * | 1996-12-05 | 1998-06-23 | Toyo Koatsu:Kk | Pump with wide delivery speed range and capable of delivery at constant pressure |
| US6234771B1 (en) * | 1998-06-02 | 2001-05-22 | Bayer Corporation | Precision pumping device |
| CN102953965A (en) * | 2012-10-25 | 2013-03-06 | 安徽皖仪科技股份有限公司 | High-voltage and constant-current pump using electronic cam technique to realize constant-current liquid conveying function |
| CN103967733A (en) * | 2014-04-24 | 2014-08-06 | 山东海燕医用材料制造有限公司 | Precision metering ceramic plunger liquid charge pump |
| CN105804961A (en) * | 2016-03-15 | 2016-07-27 | 北京星达科技发展有限公司 | Plunger pump transmission mechanism, high-pressure constant flow pump system and medium flow control method |
| CN205876633U (en) * | 2016-08-18 | 2017-01-11 | 重庆山城电器厂有限公司 | Mutual -inductor fills measuring pump device |
| CN106523318A (en) * | 2016-10-31 | 2017-03-22 | 深圳市世椿智能装备股份有限公司 | Two-way piston pump and control method thereof |
| CN106286197A (en) * | 2016-11-09 | 2017-01-04 | 北京工业大学 | One is done more physical exercises unit straight line motor drive type plunger displacement pump |
| CN106762509A (en) * | 2017-02-07 | 2017-05-31 | 筱净（上海）生物科技有限公司 | Liquid pump and liquid jettison system |
| CN210371052U (en) * | 2019-08-27 | 2020-04-21 | 江苏拓创科研仪器有限公司 | Constant-speed constant-pressure pump device |
| CN211287991U (en) * | 2019-12-05 | 2020-08-18 | 东莞市吉克尔自动化科技有限公司 | Check valve injection pump |
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Application publication date: 20210907 |