CN107355358A - The piston type pumping installations and its control method of gapless uninterrupted pumping - Google Patents
The piston type pumping installations and its control method of gapless uninterrupted pumping Download PDFInfo
- Publication number
- CN107355358A CN107355358A CN201710662771.0A CN201710662771A CN107355358A CN 107355358 A CN107355358 A CN 107355358A CN 201710662771 A CN201710662771 A CN 201710662771A CN 107355358 A CN107355358 A CN 107355358A
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- Prior art keywords
- pumping
- piston
- accumulator
- cylinder
- gapless
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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
- 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
- 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
- F04B49/002—Hydraulic systems to change the pump delivery
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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
- F04B9/08—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
- F04B9/109—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 plural pumping chambers
Abstract
The present invention discloses the piston type pumping installations and its control method of a kind of gapless uninterrupted pumping, pumping installations includes first, second pump structure, hopper and the feeding chamber connected with the hopper inner chamber, each pump structure includes pumping oil cylinder and conveying cylinder, piston assembly is provided with the conveying cylinder, and the piston rod driving piston assembly of the pumping oil cylinder moves back and forth in conveying cylinder in pumping work, also include aggregate-storing system, the conveying cylinder will expect to be pressed into storage cavity and kept in by feeding chamber in pumping work；The material being temporarily stored in switching in the storage cavity is exported by aggregate-storing system.The present invention can thoroughly solve the discontinuous problem of piston type pumping installations conveying, effectively improve conveying efficiency.
Description
Technical field
The present invention relates to the fluid transport cylinder field with piston, more particularly to a kind of reciprocating pump of gapless uninterrupted pumping
Send device and its control method.
Background technology
At home, concrete construction is applied with each field such as various fields, Fang Jian, bridge, tunnel, basis to coagulation soil application
Work engineering method proposes new requirement.And as the appearance of concrete pumping machinery, greatly improve the quality and effect of concrete construction
Rate, the world record of concrete construction is further refreshed.The swift and violent development at home of concrete pumping industry, has emerged in large numbers a collection of
The piston concrete pump manufacturer of high quality, such as 31, middle.
With the adjustment of national economic development strategy, concrete pumping industry also enters the period of a change, at this
Concrete pump is fed into constructing tunnel sequence under kind background, generates the shotcrete construction based on concrete pump,
It is exactly the nearly 2 years concrete spraying machinery hands or concrete spraying chassis risen, that is, our concrete sprayings for being commonly called as
Machine.Piston concrete pump accounts for more than 90% in concrete pumping industry, in view of tunnel wet shot engineering method proposes to pumping continuity
New challenge, piston concrete pump occur pumping discontinuous, such gap when unavoidably between conveying cylinder switching
The discontinuous quality to sprayed construction that is smaller, but occurring in concrete ejection is influenceed on concrete quality in pumping industry
Influence than more serious.
The discontinuous of pumping is unavoidably produced yet with piston concrete pump pumping theory itself, prior art
The concrete pump of uninterrupted pumping can only shorten the switching time of conveying cylinder as far as possible, can not thoroughly solve piston concrete pump stock
Discontinuous problem.
The content of the invention
The technical problems to be solved by the invention be to provide a kind of gapless uninterrupted pumping piston type pumping installations and its
Control method, to solve, due to piston type pumping installations, pumping theory itself unavoidably produces the discontinuous of pumping, existing reason
By the switching time that can only shorten pump structure as far as possible, can not thoroughly solve the discontinuous problem of conveying.
To achieve the above object, the technical solution adopted in the present invention is：The piston type pumping dress of gapless uninterrupted pumping
Put, including first, second pump structure, hopper and the feeding chamber connected with the hopper inner chamber, each pump structure include
Oil cylinder and conveying cylinder are pumped, piston assembly, and the work for pumping oil cylinder in pumping work are provided with the conveying cylinder
Stopper rod drives the piston assembly to be moved back and forth in the conveying cylinder, and switching valve, the first pumping knot are provided with the hopper
Structure and the conveying cylinder of the second pump structure are connected by the switching valve with hopper, pass through the switching valve in pumping work
Switching realizes that first/second pump structure exports the material in hopper to feeding chamber, will expect to export through feeding chamber, in addition to storing
System, in pumping work, the conveying cylinder will expect to be pressed into aggregate-storing system and kept in by feeding chamber；It is temporary when conveying cylinder switches
The material existed in the storage cavity is exported by aggregate-storing system.
In the above-mentioned technical solutions, described aggregate-storing system includes drive device and storage device, and drive device provides dynamic
Power exports the material of storage device.
In the above-mentioned technical solutions, the drive device is a kind of fluid drive apparatus；Or the drive device is one
Kind mechanical actuation device；Or the drive device is a kind of electric driver.
In the above-mentioned technical solutions, the storage device is a kind of piston apparatus that may be constructed closing chamber, the piston
Formula device includes cylinder barrel and piston assembly, and the piston assembly connects drive device.
In the above-mentioned technical solutions, the storage device is a kind of device that may be constructed enclosed elastic chamber, the elasticity
The device of closing chamber includes housing and elastic diaphragm, and the housing is separated to form closing chamber by elastic diaphragm.
In the above-mentioned technical solutions, described aggregate-storing system includes drive cylinder and accumulator, the accumulator and conveying
Chamber connects, and is provided with piston assembly in it, and the piston rod of the drive cylinder drives the piston assembly in institute during pumping work
State in accumulator and move back and forth, storage cavity formed on the accumulator and piston assembly bottom, the amount of capacity of the storage cavity with
Position of the piston assembly in the accumulator and change.
In the above-mentioned technical solutions, described aggregate-storing system also includes control valve group, and control valve group includes reversal valve and cut
Only valve, the reversal valve oil inlet are connected with second pressure source, and its actuator port is connected with aggregate-storing system drive cylinder rodless cavity,
The accumulator is connected with reversal valve actuator port and stop valve import respectively, and the cut-off valve outlet is connected to fuel tank.
In the above-mentioned technical solutions, described aggregate-storing system also includes accumulator, the accumulator respectively with reversal valve work
Make hydraulic fluid port to connect with stop valve import, the stop valve export pipeline is connected to fuel tank.
A kind of control method of the piston type pumping installations of above-mentioned gapless uninterrupted pumping, including the control of normal pumping system
Controlled with aggregate-storing system, the aggregate-storing system control comprises the following steps：
1）When conveying cylinder switches, control accumulator releases energy, and drives piston assembly acting, realizes uninterrupted pumping purpose；
2）In conveying cylinder working, there is pressure differential in feeding chamber with drive cylinder, promote piston rod to reset drive cylinder simultaneously
Pressure oil is pushed into accumulator, realizes accumulator circular work.
It is further comprising the steps of when the insufficient pressure in accumulator：By control valve group, energy is filled to accumulator.
The beneficial effects of the invention are as follows：The present invention is by setting aggregate-storing system, and in pumping work, the conveying cylinder will expect
It is pressed into storage cavity and is kept in by feeding chamber；The material being temporarily stored in when conveying cylinder switches in the storage cavity is defeated by aggregate-storing system
Go out, concrete is supplemented when conveying cylinder switches and realizes uninterrupted pumping, thoroughly solve the discontinuous of the pumping of piston concrete pump
Property the problem of, improve the efficiency of concrete pumping, and then improve the efficiency of construction in the construction of tunnel wet shot.And this reality is sent out
The piston type pumping installations overall construction design of bright gapless uninterrupted pumping rationally, it is small volume, compact-sized, can thoroughly solve existing
The concrete pump for having the uninterrupted pumping of technology can only shorten the switching time of conveying cylinder as far as possible, and piston concrete pump material is discontinuous
The problem of, and the control method of the piston type pumping installations of gapless uninterrupted pumping of the present invention is simple to operate, is easy to implement, is easy to
Promotion and implementation.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention 3；
Fig. 2 is the control principle drawing of the embodiment of the present invention 3；
Fig. 3 is the structural representation of the embodiment of the present invention 4；
Fig. 4 is the control principle drawing of the embodiment of the present invention 4；
Fig. 5 is the structural representation of the embodiment of the present invention 5；
Fig. 6 is the control principle drawing of the embodiment of the present invention 5；
Fig. 7 is one of operating diagram of piston type pumping installations of gapless uninterrupted pumping of the present invention；
Fig. 8 is the two of the operating diagram of the piston type pumping installations of gapless uninterrupted pumping of the present invention.
Meaning in figure representated by label is：1st, accumulator, 2, piston assembly, 3, drive cylinder, 4, storage cavity, 5, store
Can device, 6, control valve group, 601, reversal valve, 602, stop valve, 7, pumping ram control valve, the 8, first pumping oil cylinder, 9, second
Pump oil cylinder, 10, hopper, 11, feeding chamber, 12, S pipe valves, 13, first pressure oil sources, 14, second pressure oil sources, 15, first is defeated
Material cylinder, the 16, second conveying cylinder, the piston rod of the 17, first piston assembly, 18, first pumping oil cylinder.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes.
Unless otherwise defined, the technical term or scientific terminology that the disclosure uses, which are should be in art of the present invention, to be had
The ordinary meaning that the personage for having general technical ability is understood." first ", " second " and the similar word used in the disclosure is simultaneously
Any order, quantity or importance are not indicated that, and is used only to distinguish different parts." comprising " or "comprising" etc.
Either object covers the element or object for appearing in the word presented hereinafter to the element that similar word means to occur before the word
And its it is equivalent, and it is not excluded for other elements or object.The similar word such as " connection " or " connected " is not limited to physics
Or mechanical connection, but electrical connection can be included, it is either directly or indirect." on ", " under ",
"left", "right" etc. is only used for representing relative position relation, and after the absolute position for being described object changes, then the relative position is closed
System may also correspondingly change.
Embodiment 1：Referring to Fig. 1,2,7,8, a kind of piston type pumping installations of gapless uninterrupted pumping, including first,
Two pump structures, hopper 10 and the feeding chamber 11 connected with the inner chamber of hopper 10, the first pump structure include the first pumping He of oil cylinder 8
First conveying cylinder 15, first piston assembly 17 is provided with the first conveying cylinder 15, and in pumping work, the first pumping oil cylinder
Piston rod 18 drive first piston assembly 17 to be moved back and forth in the first conveying cylinder 15；Second send structure to include the second pump
The conveying cylinder 16 of oil cylinder 9 and second is sent, second piston assembly is provided with the second conveying cylinder 16（It is not drawn into figure）, and pumping
During work, the piston rod driving second piston assembly of the second pumping oil cylinder moves back and forth in the second conveying cylinder 16；Set in hopper
It is equipped with S pipe valves（Do not shown in figure）, the first pump conveying cylinder 15 and the second conveying cylinder 16 are connected with hopper by S pipe valves, pumped
Realize that the material in hopper is pumped into feeding chamber by first/second pump structure by the switching of the S pipe valves during work, through feeding chamber
Material is exported, the piston type pumping installations of gapless uninterrupted pumping also includes aggregate-storing system, and in pumping work, conveying cylinder will expect
Output is pressed into storage cavity 4 and kept in feeding chamber 11；The material in storage cavity 4 is temporarily stored in when conveying cylinder switches by aggregate-storing system
Output.The present invention is connected by setting aggregate-storing system to supplement concrete when the first conveying cylinder 15 and the second conveying cylinder 16 switch and realize
Continuous pumping, thoroughly solves the problems, such as the discontinuity of the pumping of piston concrete pump.
Aggregate-storing system includes drive device and storage device, and drive device provides power and exports the material of storage device, drives
Dynamic device is a kind of fluid drive apparatus；Or drive device is a kind of mechanical actuation device；Or drive device is a kind of electricity
Drive device.Storage device is a kind of piston apparatus that may be constructed closing chamber, and the piston type device includes cylinder barrel and piston
Assembly, the piston assembly connect drive device.
Embodiment 2, figure is not drawn into, and embodiment 2 and the structure of embodiment 1 are essentially identical, and something in common does not repeat, different
It is：Storage device is a kind of device that may be constructed enclosed elastic chamber, and the device of the enclosed elastic chamber includes housing and elasticity
Barrier film, the housing are separated to form closing chamber by elastic diaphragm.
Embodiment 3：Referring to Fig. 1,2,7,8, embodiment 3 and the structure of embodiment 1 are essentially identical, and something in common does not repeat, no
Be：Aggregate-storing system includes drive cylinder 3 and accumulator 1, and the accumulator 1 connects with feeding chamber 11, is provided with work in it
Assembly 2 is filled in, and the piston rod of the drive cylinder 3 drives piston assembly 2 in storing when aggregate-storing system carries out pumping work
Moved back and forth in cylinder 1, the accumulator 1 and the bottom of piston assembly 2 are formed for accommodating the storage cavity 4 expected, the appearance of the storage cavity 4
Amount size changes with position of the piston assembly 2 in accumulator 1；The cylinder diameter of drive cylinder 3 pumps less than each
The pumping oil cylinder cylinder diameter of structure, the i.e. cylinder diameter of drive cylinder 3 are less than the cylinder diameter of the first pumping oil cylinder 8, while again smaller than the second pump
Send the cylinder diameter of oil cylinder 9.The rodless cavity hydraulic fluid port of drive cylinder 3 is directly connected with second pressure oil sources 14, its rodless cavity hydraulic fluid port directly with
Fuel tank connects.
It should be noted that driving, piston assembly 2 is reciprocating in accumulator 1 to be not limited to drive cylinder 3, can also
It is cylinder, electric putter or other mechanical structures that can drive piston assembly linear reciprocating motion in accumulator.
A kind of control method of the piston type pumping installations of gapless uninterrupted pumping described above, including normal pumping system
Control and aggregate-storing system control, the aggregate-storing system control comprise the following steps：
1）When the first/bis- conveying cylinder 15/16 switches, the pressure of feeding chamber 4 reduces, when the thrust of drive cylinder 3 is more than feeding chamber
During 11 active force, the hydraulic oil of second pressure oil sources 14 pushes directly on drive cylinder 3, the piston rod band piston of drive cylinder 3
The acting of assembly 2 starts stock, realizes uninterrupted pumping purpose.
2）When the first/bis- conveying cylinder 15/16 works, when the piston rod stretching of the first/bis- pumping oil cylinder 8/9, phase is promoted
The piston assembly stock answered, the pressure rise of feeding chamber 11, the active force of feeding chamber 11 is more than the thrust of drive cylinder 3, by conveying
In the storage cavity 4 of material press-in aggregate-storing system in chamber, and then the piston rod of drive cylinder 3 is promoted to reset.Conveying cylinder working refers to
It is that the first pump structure or the second pump structure carry out pumping work.
Embodiment 4, referring to Fig. 3,4,7 and 8, embodiment 4 and the structure of embodiment 3 are essentially identical, and something in common does not repeat, no
Be：The aggregate-storing system of the present embodiment also includes control valve group 6, and control valve group 6 controls entering for drive cylinder 3 fuel-displaced, control
Valve group 6 includes reversal valve 601, the rodless cavity hydraulic fluid port of the actuator port connection drive cylinder 3 of reversal valve 601, its oil inlet and the
Two pressure oil-sources 14 connect, and its oil return opening is connected to fuel tank.
A kind of control method of the piston type pumping installations of gapless uninterrupted pumping described above, including normal pumping system
Control and aggregate-storing system control, the aggregate-storing system control comprise the following steps：
1）When the first/bis- conveying cylinder 15/16 switches, the reversal valve 601 of control valve group is opened, to the rodless cavity of drive cylinder 3
Hydraulic fluid port fuel feeding, the piston rod of drive cylinder 3 drive the acting of piston assembly 2 to start stock, realize uninterrupted pumping purpose；
2）When the first/bis- conveying cylinder 15/16 works, the reversal valve 601 of closing control valve group, make the rodless cavity of drive cylinder 3
Hydraulic fluid port connects with fuel tank, allows its direct oil return；When the piston rod stretching of the first/bis- pumping oil cylinder 8/9, concrete piston corresponding to promotion
During stock, feeding chamber pressure rise, the active force of feeding chamber is more than the thrust of drive cylinder, so as to by the material pressure in feeding chamber 11
Enter the storage cavity 4 of aggregate-storing system, and then promote the piston rod of drive cylinder 3 to reset.
Embodiment 5, referring to Fig. 5,6,7 and 8, embodiment 5 is additionally arranged accumulator 5, accumulator 5 on the basis of embodiment 4
Fuel outlet is connected with the actuator port of reversal valve 601 and the valve inlet ductwork of manual shutoff 602 respectively by pipeline, and stop valve 602 goes out
Mouth pipeline is connected to fuel tank.
A kind of control method of the piston type pumping installations of gapless uninterrupted pumping described above, including normal pumping system
Control and aggregate-storing system control, the aggregate-storing system control comprise the following steps：
1）When the first/bis- conveying cylinder 15/16 switches, control accumulator 5 releases energy, and promotes the piston rod of drive cylinder 3 to stretch
Go out to drive the acting of piston assembly 2 to start stock, realize uninterrupted pumping purpose；
2）In conveying cylinder working, when the piston rod stretching of the first/bis- pumping oil cylinder 8/9, corresponding piston assembly stock is promoted,
There is pressure differential in the pressure rise of feeding chamber 11, feeding chamber 11, promoting drive cylinder piston rod to reset will drive simultaneously with drive cylinder 3
Dynamic oil cylinder working-pressure oil push-in accumulator 5, realizes accumulator circular work, is specially：The active force of feeding chamber 11 is more than driving oil
The thrust of cylinder 3, because pump structure pumping oil cylinder cylinder diameter is more than drive cylinder cylinder diameter, so as to which the material in feeding chamber 11 is pressed into storage
In the storage cavity 4 of material system, and then promote the piston rod of drive cylinder 3 to retract, the hydraulic oil in drive cylinder 3 is pressed into again
In accumulator 5, the topping up of accumulator 5 is realized, prepares release next time pressure.
It is further comprising the steps of when the insufficient pressure in accumulator 5：When the first/bis- conveying cylinder 15/16 works, lead to
Control control valve group 6 is crossed, fills energy to accumulator 5.
The piston type pumping installations and its control method of gapless uninterrupted pumping of the present invention are not limited to that concrete pump is integrated should
With can also independent utility as needed.
The schematical embodiment of the present invention is the foregoing is only, is not limited to the scope of the present invention, it is any
Those skilled in the art on the premise of present inventive concept and principle is not departed from, can to above-described embodiment carry out it is a variety of change,
Modification, replace and deform.For example drive cylinder is changed to cylinder, electrical equipment drive or other can drive piston assembly in accumulator
Mechanical structure of interior linear reciprocating motion etc. may make up the specific embodiment of the present invention, in protection scope of the present invention
Among, it is not described in detail one by one herein.
Claims (10)
1. a kind of piston type pumping installations of gapless uninterrupted pumping, including first, second pump structure, hopper and with the material
Struggle against the feeding chamber that inner chamber connects, and each pump structure includes pumping oil cylinder and conveying cylinder, and piston is provided with the conveying cylinder
Assembly, and in pumping work, the piston rod of the pumping oil cylinder drives the piston assembly back and forth to be transported in the conveying cylinder
It is dynamic, be provided with switching valve in the hopper, the conveying cylinder of the first pump structure and the second pump structure by the switching valve with
Hopper connects, and realizes that first/second pump structure is defeated by the material in hopper by the switching of the switching valve in pumping work
Go out to feeding chamber, will expect to export through feeding chamber, it is characterised in that also including aggregate-storing system, the conveying cylinder in pumping work
Material is pressed into aggregate-storing system and kept in by feeding chamber；The material in the storage cavity is temporarily stored in when conveying cylinder switches by storing system
System output.
2. the piston type pumping installations of gapless uninterrupted pumping according to claim 1, it is characterised in that described storing
System includes drive device and storage device, and drive device provides power and exports the material of storage device.
3. the piston type pumping installations of gapless uninterrupted pumping according to claim 2, it is characterised in that the driving dress
It is a kind of fluid drive apparatus to put；Or the drive device is a kind of mechanical actuation device；Or the drive device is one
Kind electric driver.
4. the piston type pumping installations of gapless uninterrupted pumping according to claim 2, it is characterised in that the storing dress
It is a kind of piston apparatus that may be constructed closing chamber to put, and the piston type device includes cylinder barrel and piston assembly, and the piston is total
Into connection drive device.
5. the piston type pumping installations of gapless uninterrupted pumping according to claim 2, it is characterised in that the storing dress
It is a kind of device that may be constructed enclosed elastic chamber to put, and the device of the enclosed elastic chamber includes housing and elastic diaphragm, described
Housing is separated to form closing chamber by elastic diaphragm.
6. the piston type pumping installations of gapless uninterrupted pumping according to claim 1, it is characterised in that described storing
System includes drive cylinder and accumulator, and the accumulator connects with feeding chamber, is provided with piston assembly in it, during pumping work
The piston rod of the drive cylinder drives the piston assembly to be moved back and forth in the accumulator, the accumulator and piston assembly
Storage cavity formed on bottom, and the amount of capacity of the storage cavity changes with position of the piston assembly in the accumulator
Become.
7. the piston type pumping installations of gapless uninterrupted pumping according to claim 6, it is characterised in that described storing
System also includes control valve group, and control valve group includes reversal valve and stop valve, and the reversal valve oil inlet connects with second pressure source
Connect, its actuator port is connected with aggregate-storing system drive cylinder rodless cavity, the accumulator respectively with reversal valve actuator port and cut
Only valve import connects, and the cut-off valve outlet is connected to fuel tank.
8. the piston type pumping installations of gapless uninterrupted pumping according to claim 7, it is characterised in that described storing
System also includes accumulator, and the accumulator is connected with reversal valve actuator port and stop valve import respectively, and the stop valve goes out
Mouth pipeline is connected to fuel tank.
9. a kind of control method of the piston type pumping installations of gapless uninterrupted pumping as claimed in claim 8, including it is normal
Pumping system controls and aggregate-storing system control, it is characterised in that the aggregate-storing system control comprises the following steps：
1）When conveying cylinder switches, control accumulator releases energy, and drives piston assembly acting, realizes uninterrupted pumping purpose；
2）In conveying cylinder working, there is pressure differential in feeding chamber with drive cylinder, promote piston rod to reset drive cylinder simultaneously
Pressure oil is pushed into accumulator, realizes accumulator circular work.
10. the control method of the piston type pumping installations of gapless uninterrupted pumping according to claim 9, its feature exist
In further comprising the steps of when the insufficient pressure in accumulator：By controlling control valve group, energy is filled to accumulator.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710662771.0A CN107355358A (en) | 2017-08-04 | 2017-08-04 | The piston type pumping installations and its control method of gapless uninterrupted pumping |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710662771.0A CN107355358A (en) | 2017-08-04 | 2017-08-04 | The piston type pumping installations and its control method of gapless uninterrupted pumping |
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| CN107355358A true CN107355358A (en) | 2017-11-17 |
Family
ID=60286081
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710662771.0A Pending CN107355358A (en) | 2017-08-04 | 2017-08-04 | The piston type pumping installations and its control method of gapless uninterrupted pumping |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043438A (en) * | 2019-05-24 | 2019-07-23 | 徐州徐工施维英机械有限公司 | Pasty material conveying device and engineering truck |
| CN111806329A (en) * | 2020-04-17 | 2020-10-23 | 李巧庆 | Fluidized cement soil conveyer |
| CN115492391A (en) * | 2021-06-18 | 2022-12-20 | 润弘精密工程事业股份有限公司 | Concrete pumping and conveying device and method thereof |
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| CN1433506A (en) * | 1999-11-29 | 2003-07-30 | 约尔格·于代尔梅尔 | Thick matter pump |
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| CN102979693A (en) * | 2012-11-27 | 2013-03-20 | 长安大学 | Device capable of realizing continuous constant flow pumping of concrete and control method of device |
| CN103697010A (en) * | 2013-12-13 | 2014-04-02 | 三一汽车制造有限公司 | Integrated hydraulic valve group, hydraulic driving system and concrete pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110043438A (en) * | 2019-05-24 | 2019-07-23 | 徐州徐工施维英机械有限公司 | Pasty material conveying device and engineering truck |
| CN111806329A (en) * | 2020-04-17 | 2020-10-23 | 李巧庆 | Fluidized cement soil conveyer |
| CN111806329B (en) * | 2020-04-17 | 2023-02-17 | 李巧庆 | Fluidized cement soil conveyer |
| CN115492391A (en) * | 2021-06-18 | 2022-12-20 | 润弘精密工程事业股份有限公司 | Concrete pumping and conveying device and method thereof |
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Application publication date: 20171117 |