CN110821775A - Multi-cylinder parallel type mine tailing slurry hydraulic pumping system - Google Patents
Multi-cylinder parallel type mine tailing slurry hydraulic pumping system Download PDFInfo
- Publication number
- CN110821775A CN110821775A CN201910923783.3A CN201910923783A CN110821775A CN 110821775 A CN110821775 A CN 110821775A CN 201910923783 A CN201910923783 A CN 201910923783A CN 110821775 A CN110821775 A CN 110821775A
- Authority
- CN
- China
- Prior art keywords
- pumping
- hydraulic
- cylinder
- hydraulic cylinder
- rodless cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
- F04B9/103—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber
- F04B9/105—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting liquid motor
- F04B9/1056—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting liquid motor with fluid-actuated inlet or outlet valve
-
- 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
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
-
- 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
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
- F04B23/06—Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
-
- 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
- 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
- F04B53/10—Valves; Arrangement of valves
-
- 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
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
- F04B9/103—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber
- F04B9/105—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting liquid motor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a multi-cylinder parallel mine tailing slurry hydraulic pumping system, which relates to the field of fluid delivery pumps and mainly comprises pumping units, hydraulic units and an electric control system, wherein each group of pumping units is provided with a set of hydraulic units to form a group of hydraulic pumping devices, and the plurality of groups of hydraulic pumping devices are arranged in parallel and controlled by the electric control system; a group of spare pumping cylinder devices with the same structure are additionally arranged below the hydraulic pumping device, and when the hydraulic pumping device breaks down, the spare pumping cylinder devices can replace the failure group to work, so that the normal operation of conveying operation is ensured. The invention has the beneficial effects that: the multi-cylinder linkage is adopted and controlled by the same electric control system, so that the continuity and the stability of the work of the equipment are ensured, and the conveying efficiency of the equipment is increased; the risk of solid-liquid separation of slurry caused by intermittent pumping action of equipment is reduced, and the risk of pipe blockage is reduced; the pumping reversing device has a simple structure, the reliability of the equipment is improved, and the maintenance cost of the equipment is reduced; and a set of standby device is additionally arranged, so that the overall stability of the equipment is improved.
Description
Technical Field
The invention relates to the field of fluid delivery pumps, in particular to a multi-cylinder parallel mine tailing slurry hydraulic pumping system.
Background
The building aggregate is one of important resource type products, and is a massive basic building material which is widest in construction engineering application, largest in quantity and irreplaceable. With the development of economic society of China, the ecological civilization construction is raised as a national strategy, and the ecological environment protection and restoration become one of the central works for the development of the building aggregate industry. At present, the sandstone mine in China is in a key period of transformation from a traditional mine with small dispersion danger and low mess to a green aggregate mine with large scale, industrialization, modernization, environmental protection and harmony.
At present, most of mine tailing slurry ultra-remote conveying adopts general concrete pumping equipment for pumping, the equipment is driven by double cylinders, a pumping cylinder body is connected with a hopper, an S valve reversing device is arranged in the hopper, a feeding and discharging port is reversed through S valve swinging, when one pumping cylinder performs pumping action, the other pumping cylinder performs suction action, and therefore tailing slurry conveying is achieved.
The two pumping cylinders realize the switching of suction and discharge materials through the swinging of the S valve, the time is discontinuous in the switching process, and the pumping of the materials is in an intermittent conveying state, so that for ultra-long-distance pumping, the discontinuous pumping easily causes the solid-liquid separation of slurry, increases the pumping resistance and easily causes the occurrence of material blockage; meanwhile, the conveying efficiency of the materials is reduced by intermittent pumping; the slurry is fed through the hopper, the stirring mechanism is required to continuously stir so as to avoid solid-liquid separation of the slurry, but for slurry, the cohesiveness of the material is far lower than that of concrete slurry, the slurry separation phenomenon is more likely to occur, the equipment shutdown risk is increased, once shutdown occurs, all long-distance conveying pipelines of the ultra-long-distance pumping conveying system are disassembled and cleaned, and the maintenance workload is increased suddenly; the traditional S valve reversing device of the pumping equipment is complex in structure and high in production cost, abrasion is easily caused in the working process, and the equipment operation and maintenance cost is high.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a multi-cylinder parallel mine tailing slurry hydraulic pumping system which is used for solving the problem of discontinuous pumping caused by reversing of an S valve in the double-cylinder pumping process and ensuring relatively stable flow.
The purpose of the invention is achieved by the following technical scheme: the multi-cylinder parallel mine tailing slurry hydraulic pumping system mainly comprises pumping units, hydraulic units and an electric control system, wherein each group of pumping units is provided with a set of hydraulic units to form a group of hydraulic pumping devices, and the hydraulic pumping devices are arranged in parallel and are controlled to work by the electric control system in a unified manner; the pumping unit mainly comprises a pumping cylinder, a pumping piston connected to one end of a connecting rod is arranged in the pumping cylinder, the pumping cylinder is divided into a pumping cylinder rodless cavity and a pumping cylinder rod cavity, the pumping cylinder rodless cavity is respectively connected with a discharge pipeline and a feed pipeline through a feeding and discharging three-way pipe, a discharge one-way valve is arranged on the discharge pipeline, and a suction one-way valve is arranged on the feed pipeline; the hydraulic unit mainly comprises a hydraulic cylinder, a hydraulic cylinder piston connected to the other end of the connecting rod is arranged in the hydraulic cylinder, the hydraulic cylinder is divided into a hydraulic cylinder rod cavity and a hydraulic cylinder rodless cavity, the hydraulic cylinder rod cavity is communicated with the pumping cylinder rod cavity through a water tank, a hydraulic cylinder sealing assembly is arranged between the hydraulic unit and the water tank for sealing, a hydraulic cylinder rod cavity oil port is formed in the hydraulic cylinder rod cavity, a hydraulic cylinder rodless cavity oil port is formed in the hydraulic cylinder rodless cavity, and the hydraulic cylinder rod cavity oil port and the hydraulic cylinder rodless cavity oil port are connected with a hydraulic pump and a hydraulic oil tank through a proportional reversing valve; the electric control system controls the hydraulic pump to input hydraulic oil in the hydraulic oil tank into the hydraulic cylinder through the hydraulic cylinder rodless cavity oil port, so that the hydraulic oil pushes the hydraulic cylinder piston to move forwards, power is transmitted to the pumping piston through the connecting rod, the pumping piston pushes slurry in the rodless cavity of the pumping cylinder to be discharged into the feeding and discharging three-way pipe, the suction check valve is closed, the discharge check valve is opened, the slurry is discharged through the discharge pipeline, and pumping discharge is realized.
Furthermore, the electric control system can control and adjust the pumping time interval of each group of hydraulic pumping devices, and the stability of flow output is ensured.
As an improvement on the structure of the invention, the feed and discharge three-way pipe is provided with a stop valve for controlling the communication between the rodless cavity of the pumping cylinder and the feed and discharge pipelines, and a group of spare pumping cylinder devices with the same structure are additionally arranged in a plurality of groups of hydraulic pumping devices which are arranged in parallel.
The invention has the beneficial effects that:
1. the invention adopts multi-cylinder linkage and is controlled by the same electric control system, thus ensuring the continuity and the stability of the equipment work and increasing the conveying efficiency of the equipment;
2. the invention reduces the risk of solid-liquid separation of slurry caused by intermittent pumping action of the equipment and reduces the risk of pipe blockage;
3. the pumping reversing device is simple in structure, the reliability of equipment is improved, and the maintenance cost of the equipment is reduced.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
Description of reference numerals: the device comprises a discharge pipeline 1, a feed pipeline 2, a suction one-way valve 3, a discharge one-way valve 4, a feeding and discharging three-way pipe 5, a pumping cylinder rodless cavity 6, a pumping piston 7, a connecting rod 8, a pumping cylinder rod cavity 9, a pumping cylinder 10, a water tank 11, a hydraulic cylinder sealing assembly 12, a hydraulic cylinder rod cavity oil port 13, a hydraulic cylinder rod cavity 14, a hydraulic cylinder piston 15, a hydraulic cylinder rodless cavity 16, a hydraulic cylinder 17, a hydraulic cylinder rodless cavity oil port 18, a proportional directional valve 19, a hydraulic pump 20, a hydraulic oil tank 21, an electric control system 22, a stop valve 23 and a spare pumping cylinder device 24.
Detailed Description
The invention will be described in detail below with reference to the following drawings:
example 1: as shown in the attached figure 1, the multi-cylinder parallel mine tailing slurry hydraulic pumping system mainly comprises pumping units, hydraulic units and an electric control system 22, wherein each group of pumping units is provided with one set of hydraulic unit to form one group of hydraulic pumping devices, and three groups of hydraulic pumping devices are arranged in parallel and are controlled to work by the electric control system 22 in a unified manner; the pumping unit mainly comprises a pumping cylinder 10, a pumping piston 7 connected to one end of a connecting rod 8 is arranged in the pumping cylinder 10, the pumping cylinder 10 is divided into a pumping cylinder rodless cavity 6 and a pumping cylinder rod cavity 9, the pumping cylinder rodless cavity 6 is respectively connected with a discharge pipeline 1 and a feed pipeline 2 through a feeding and discharging three-way pipe 5, a discharge one-way valve 4 is arranged on the discharge pipeline 1, and a suction one-way valve 3 is arranged on the feed pipeline 2; the hydraulic unit mainly comprises a hydraulic cylinder 17, a hydraulic cylinder piston 15 connected to the other end of the connecting rod 8 is arranged in the hydraulic cylinder 17, the hydraulic cylinder 17 is divided into a hydraulic cylinder rod cavity 14 and a hydraulic cylinder rodless cavity 16, the hydraulic cylinder rod cavity 14 is communicated with the pumping cylinder rod cavity 9 through a water tank 11, a hydraulic cylinder sealing component 12 is arranged between the hydraulic unit and the water tank 11 for sealing, a hydraulic cylinder rod cavity oil port 13 is formed in the hydraulic cylinder rod cavity 14, a hydraulic cylinder rodless cavity oil port 18 is formed in the hydraulic cylinder rodless cavity 16, and the hydraulic cylinder rod cavity oil port 13 and the hydraulic cylinder rodless cavity oil port 18 are connected with a hydraulic pump 20 and a hydraulic oil tank 21 through a proportional reversing valve 19; in the pumping process, the electric control system 22 controls the hydraulic pump 20 to input hydraulic oil in the hydraulic oil tank 21 into the hydraulic cylinder 17 through the hydraulic cylinder rodless cavity oil port 18, so that the hydraulic oil pushes the hydraulic cylinder piston 15 to move forwards, power is transmitted to the pumping piston 7 through the connecting rod 8, the pumping piston 7 pushes slurry in the pumping cylinder rodless cavity 6 to be discharged into the feeding and discharging three-way pipe 5, at the moment, the suction one-way valve 3 is closed, the discharge one-way valve 4 is opened, and the slurry is discharged from the discharge pipeline 1; after pumping and discharging are finished, the proportional reversing valve 19 performs reversing action, hydraulic oil enters the hydraulic cylinder 17 from the rod cavity oil port 13 of the hydraulic cylinder, the hydraulic cylinder piston 15 is pushed to move backwards and reversely, so that the pumping piston 7 is driven to move backwards and reversely, at the moment, the suction check valve 3 is opened, the discharge check valve 4 is closed, and slurry is sucked into the pumping cylinder 10 through the feeding and discharging three-way pipe 5 to prepare for pumping out next time; the electronic control system 22 starts the slurry pumping action of the second group of hydraulic pumping devices before the slurry pumping action of the first group of hydraulic pumping devices is terminated, and starts the slurry pumping action of the third group of hydraulic pumping devices before the slurry pumping action of the second group of hydraulic pumping devices is terminated, so that the stability of flow output is ensured, and meanwhile, the pumping time interval of each group of hydraulic pumping devices can be adjusted according to the square quantity requirement of pumped materials.
Example 2: as shown in the attached drawing 2, the difference from the embodiment 1 lies in that a stop valve 23 is additionally arranged on the feeding and discharging three-way pipe 5 for controlling the communication between the rodless cavity 6 of the pumping cylinder and the feeding and discharging pipelines 2 and 1, a group of spare pumping cylinder devices 24 with the same structure is additionally arranged below three groups of hydraulic pumping devices arranged in parallel, the stop valve 23 of the hydraulic pumping device is in an open state under normal working conditions, and the stop valve 23 of the spare pumping cylinder device 24 is in a closed state; when one of the hydraulic pumping devices fails, the stop valve 23 is used for disconnecting the device from the material inlet/outlet pipelines 2 and 1, the electric control system 22 stops the operation of the device, the stop valve 23 between the standby pumping cylinder device 24 and the material inlet/outlet pipelines is opened, the electric control system 22 starts the standby pumping cylinder device 24, and the standby pumping cylinder device 24 replaces the failed hydraulic pumping device to work, so that the conveying operation is ensured to be continuously and normally carried out.
It should be understood that equivalent substitutions and changes to the technical solution and the inventive concept of the present invention should be made by those skilled in the art to the protection scope of the appended claims.
Claims (3)
1. The utility model provides a multi-cylinder parallel mine tailing pulp hydraulic pumping system which characterized in that: the hydraulic pump mainly comprises pumping units, hydraulic units and an electric control system (22), wherein each group of pumping units is provided with a set of hydraulic units to form a group of hydraulic pumping devices, and the plurality of groups of hydraulic pumping devices are arranged in parallel and are controlled to work by the electric control system (22) in a unified way; the pumping unit mainly comprises a pumping cylinder (10), a pumping piston (7) connected to one end of a connecting rod (8) is arranged in the pumping cylinder (10), the pumping cylinder (10) is divided into a pumping cylinder rodless cavity (6) and a pumping cylinder rod cavity (9), the pumping cylinder rodless cavity (6) is respectively connected with a discharge pipeline (1) and a feed pipeline (2) through a feeding and discharging three-way pipe (5), a discharge one-way valve (4) is arranged on the discharge pipeline (1), and a suction one-way valve (3) is arranged on the feed pipeline (2); the hydraulic unit mainly comprises a hydraulic cylinder (17), a hydraulic cylinder piston (15) connected to the other end of the connecting rod (8) is arranged in the hydraulic cylinder (17), the hydraulic cylinder (17) is divided into a hydraulic cylinder rod cavity (14) and a hydraulic cylinder rodless cavity (16), the hydraulic cylinder rod cavity (14) is communicated with the pumping cylinder rod cavity (9) through a water tank (11), a hydraulic cylinder sealing component (12) is arranged between the hydraulic unit and the water tank (11) for sealing, a hydraulic cylinder rod cavity oil port (13) is formed in the hydraulic cylinder rod cavity (14), a hydraulic cylinder rodless cavity oil port (18) is formed in the hydraulic cylinder rodless cavity (16), and the hydraulic cylinder rod cavity oil port (13) and the hydraulic cylinder rodless cavity oil port (18) are connected with a hydraulic pump (20) and a hydraulic oil tank (21) through a proportional reversing valve (19); the hydraulic pump (20) is controlled by the electric control system (22) to input hydraulic oil in the hydraulic oil tank (21) into the hydraulic cylinder (17) through the hydraulic cylinder rodless cavity oil port (18), so that the hydraulic oil pushes the hydraulic cylinder piston (15) to move forwards, power is transmitted to the pumping piston (7) through the connecting rod (8), the pumping piston (7) pushes slurry in the pumping cylinder rodless cavity (6) to be discharged into the feeding and discharging three-way pipe (5), the suction one-way valve (3) is closed while the discharge one-way valve (4) is opened, and the slurry is discharged from the discharge pipeline (1), so that pumping and discharging are realized.
2. The multi-cylinder parallel mine tailing slurry hydraulic pumping system of claim 1, characterized in that: the feeding and discharging three-way pipe (5) is provided with a stop valve (23) for controlling the communication between the rodless cavity (6) of the pumping cylinder and the feeding and discharging pipelines (2 and 1), and a group of standby pumping cylinder devices (24) with the same structure are additionally arranged in a plurality of groups of hydraulic pumping devices which are arranged in parallel.
3. The multi-cylinder parallel mine tailing slurry hydraulic pumping system of claim 1, characterized in that: the electric control system (22) can control and adjust the pumping time interval of each group of hydraulic pumping devices, and the stability of flow output is ensured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910923783.3A CN110821775B (en) | 2019-09-27 | 2019-09-27 | Multi-cylinder parallel type mine tailing slurry hydraulic pumping system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910923783.3A CN110821775B (en) | 2019-09-27 | 2019-09-27 | Multi-cylinder parallel type mine tailing slurry hydraulic pumping system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110821775A true CN110821775A (en) | 2020-02-21 |
| CN110821775B CN110821775B (en) | 2021-10-15 |
Family
ID=69548633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910923783.3A Active CN110821775B (en) | 2019-09-27 | 2019-09-27 | Multi-cylinder parallel type mine tailing slurry hydraulic pumping system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110821775B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0389785A2 (en) * | 1989-03-29 | 1990-10-03 | Schwing GmbH | Two-cylinder-slurrypump with piston-accumulator |
| US5765375A (en) * | 1994-12-20 | 1998-06-16 | Humanteknik Ab | Waterpower machine |
| CN1544302A (en) * | 2003-11-11 | 2004-11-10 | 冷召军 | Slurry conveying equipment |
| CN1952390A (en) * | 2006-11-21 | 2007-04-25 | 张志英 | Automatic-boosting reciprocating pump |
| CN203640946U (en) * | 2013-10-23 | 2014-06-11 | 厦门理工学院 | Concrete pumping device with proximity switch |
| CN205654495U (en) * | 2016-04-15 | 2016-10-19 | 任雁 | Shaped steel soil cement underground continuous wall mud pumping installations control system |
| CN206054208U (en) * | 2016-09-19 | 2017-03-29 | 李星宇 | A kind of 4 cylinder direct driving type slush pump system of no pulse hydraulic pressure |
| CN206487698U (en) * | 2017-02-07 | 2017-09-12 | 广州市日森机械股份有限公司 | A kind of constant displacement pump energy-saving hydraulic system |
| CN210859076U (en) * | 2019-09-27 | 2020-06-26 | 日昌升建筑新材料设计研究院有限公司 | Multi-cylinder pumping equipment |
-
2019
- 2019-09-27 CN CN201910923783.3A patent/CN110821775B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0389785A2 (en) * | 1989-03-29 | 1990-10-03 | Schwing GmbH | Two-cylinder-slurrypump with piston-accumulator |
| US5765375A (en) * | 1994-12-20 | 1998-06-16 | Humanteknik Ab | Waterpower machine |
| CN1544302A (en) * | 2003-11-11 | 2004-11-10 | 冷召军 | Slurry conveying equipment |
| CN1952390A (en) * | 2006-11-21 | 2007-04-25 | 张志英 | Automatic-boosting reciprocating pump |
| CN203640946U (en) * | 2013-10-23 | 2014-06-11 | 厦门理工学院 | Concrete pumping device with proximity switch |
| CN205654495U (en) * | 2016-04-15 | 2016-10-19 | 任雁 | Shaped steel soil cement underground continuous wall mud pumping installations control system |
| CN206054208U (en) * | 2016-09-19 | 2017-03-29 | 李星宇 | A kind of 4 cylinder direct driving type slush pump system of no pulse hydraulic pressure |
| CN206487698U (en) * | 2017-02-07 | 2017-09-12 | 广州市日森机械股份有限公司 | A kind of constant displacement pump energy-saving hydraulic system |
| CN210859076U (en) * | 2019-09-27 | 2020-06-26 | 日昌升建筑新材料设计研究院有限公司 | Multi-cylinder pumping equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110821775B (en) | 2021-10-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102536933B (en) | Hydraulic pumping system and concrete-pumping equipment comprising same | |
| CN202031798U (en) | Concrete pumping system | |
| CN201176912Y (en) | High pressure large flow rate ceramic piston pump | |
| CN201116473Y (en) | Wet-type concrete spraying units | |
| CN210859077U (en) | Plug-and-play pumping system | |
| CN106801691A (en) | Concrete pump and its hydraulic system, control method | |
| CN203600080U (en) | Front mixed grinding material jet-flow continuous material supply system | |
| CN210859076U (en) | Multi-cylinder pumping equipment | |
| CN102330665B (en) | Concrete pumping equipment and control method and device thereof | |
| CN1815040A (en) | Concrete pump hydraulic system auxiliary energy-storage flow-increasing device (2) | |
| CN110821775B (en) | Multi-cylinder parallel type mine tailing slurry hydraulic pumping system | |
| CN201431939Y (en) | Pumping wet spraying machine | |
| CN202326185U (en) | Paste filling and switching valve for coal mine | |
| CN103230745A (en) | Differential pressure booster-type energy recovery device based on reverse osmosis system | |
| CN202091299U (en) | Positive-displacement liquid pressure energy recycling device | |
| CN202900560U (en) | Pressure compensation device for oil hydraulic ceramic plunger mud pumps | |
| CN201858210U (en) | Novel hydraulic oil way integrated valve of loader | |
| CN201615097U (en) | Confluence device of speed-up thrust augmentation dual pump with adjustable energy-storage pressure | |
| CN209213904U (en) | A kind of coal slime transportation system | |
| CN208534703U (en) | A kind of plunger centrifugal pump station for filter press | |
| CN206530350U (en) | Underground monomer column hoisting system | |
| CN111232652A (en) | Paste pump with double cutting valves | |
| CN216812326U (en) | Full-hydraulic system for coal mine for pumping type wet spraying machine | |
| CN211997906U (en) | Novel accumulated material clearing device for hopper | |
| CN219654994U (en) | Grouting machine hydraulic system capable of automatically controlling grouting speed and pressure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |