CN107747269A - A kind of sprinkling control system and its control method - Google Patents
A kind of sprinkling control system and its control method Download PDFInfo
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- CN107747269A CN107747269A CN201711165916.2A CN201711165916A CN107747269A CN 107747269 A CN107747269 A CN 107747269A CN 201711165916 A CN201711165916 A CN 201711165916A CN 107747269 A CN107747269 A CN 107747269A
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- water pump
- water
- controller
- threshold value
- control
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/08—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades
- E01C23/085—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades using power-driven tools, e.g. vibratory tools
- E01C23/088—Rotary tools, e.g. milling drums
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Spray Control Apparatus (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The present invention discloses a kind of sprinkling control system and its control method, is related to spray control technical field.The sprinkling control system includes watering component, control assembly and drive component, and watering component includes water tank, water pump and nozzle, and water tank is located at the water inlet end of water pump, and nozzle is located at the water side of water pump；Control assembly includes high pressure sensor and controller, and controller and high pressure sensor electrical connection, high pressure sensor are located on the outlet pipeline of water pump, and control assembly can control the periodicity folding of water pump；Drive component is connected with watering component and control assembly respectively.The present invention is by providing a kind of sprinkling control system, using real-time monitoring of the control assembly to pressure at watering component pump outlet, for indicating whether sprinkler system blocks, so as to solve the problems, such as existing sprinkler system without blocking warning function.
Description
Technical field
The present invention relates to spray control technical field, more particularly to a kind of sprinkling control system and its control method.
Background technology
Milling machine is one of main machine of maintenance of surface operation, and it is clear to be mainly used in the asphalt surface courses such as highway and urban road
Except rut, oily wave, reticulate pattern, cracking etc..Milling is carried out to having damaged road surface by the cutter head of milling wheel, and passes through belt material delivering
The old material of milling is cleared up and reclaimed.
During milling machine works, sprinkler system plays highly important effect, including reduces dust, cooling and punching
Wash milling wheel cutter head, protection conveyor belt etc..In the prior art, milling machine sprinkler system typically has water shortage alarm, but
It is that, when debris blocks water pipe and nozzle, pressure can increase, and watering amount can reduce, if finding not in time all without alarm is blocked
Pump, pipeline, milling wheel cutter head etc. can be damaged, and can be had an impact to construction effect.
It would therefore be highly desirable to a kind of sprinkling control system is needed to solve the above problems.
The content of the invention
It is an object of the invention to provide a kind of sprinkling control system and its control method, to solve existing sprinkler system not
The problem of with warning function is blocked.
For the above-mentioned purpose, the present invention uses following technical scheme：
A kind of sprinkling control system, including：
Watering component, it includes water tank, water pump and nozzle, and the water tank is located at the water inlet end of the water pump, the nozzle
Positioned at the water side of the water pump；
Control assembly, it includes high pressure sensor and controller, the controller and high pressure sensor electrical connection, institute
State high pressure sensor to be located on the outlet pipeline of the water pump, control assembly can control the periodicity folding of water pump；
Drive component, it is connected with the watering component and the control assembly respectively.
Preferably, the control assembly also includes the low tension switch on the inlet pipeline of the water pump, it is described low
Compress switch and electrically connected with the controller.
Preferably, the drive component is hydraulic-driven component, the hydraulic-driven component includes hydraulic oil container and liquid
Pressure motor, the hydraulic motor are connected with the water pump.
Preferably, the control assembly also includes the first magnetic valve and second solenoid valve, first magnetic valve is located at
Between the hydraulic oil container and the hydraulic motor, the second solenoid valve is located at the water side of the water pump, and described first
Magnetic valve and the second solenoid valve electrically connect with the controller.
Preferably, also including display, display is electrically connected with the controller.
A kind of sprinkling control method, high pressure sensor detect the delivery port pressure of water pump, and send a signal to controller,
Controller judges the delivery port pressure of water pump；
If the delivery port pressure of water pump is higher than predetermined threshold value B, controller control water pump periodicity folding, control is recycled
Device judges whether the delivery port pressure of water pump is higher than predetermined threshold value C, and wherein predetermined threshold value C is more than predetermined threshold value B；
If the delivery port pressure of water pump is higher than predetermined threshold value C, blocking alarm is carried out.
Preferably, if the delivery port pressure of water pump is not higher than predetermined threshold value B, controller controls the first magnetic valve and the
Two magnetic valves are opened, and nozzle is normally sprinkled water.
Preferably, the water inlet pressure of low tension switch detection water pump, and controller is sent a signal to, controller judges
The water inlet pressure of water pump.
Preferably, if the water inlet pressure of water pump is less than predetermined threshold value A, low tension switch closure, controller control the
One magnetic valve and second solenoid valve closure, and signal of water shortage is sent to display, display shows water shortage information, wherein, in advance
If threshold value B is more than predetermined threshold value A.
Preferably, if the water inlet pressure of water pump is not less than predetermined threshold value A, low tension switch is opened, controller control
First magnetic valve and second solenoid valve are opened.
Beneficial effects of the present invention：
The present invention is electrically connected by providing a kind of sprinkling control system using low tension switch and high pressure sensor with controller
The mode connect, for indicate sprinkler system whether water shortage or blocking, so as to solve existing sprinkler system without water shortage alarm
The problem of with two kinds of functions of alarm are blocked；Using the first solenoid valve control hydraulic oil container and second solenoid valve control water pump, and the
The mode that one magnetic valve is electrically connected with the controller with second solenoid valve, to control the folding of sprinkler system oil circuit and water route；Profit
It is connected with hydraulic motor with water pump so that hydraulic motor provides hydraulic power for water pump；It is low using being set on water feeding of water pump pipeline
Compress switch and high pressure sensor be set on outlet pipeline, can detect in real time sprinkler system whether water shortage or blocking；Utilize display
Device is electrically connected with the controller so that the water shortage or jam signal that controller sends low tension switch and high pressure sensor are changed into scarce
Water is alarmed and blocked warning message and shows over the display.
Brief description of the drawings
Now embodiments of the present invention will be described with reference to appended accompanying drawing only by way of example, wherein
Fig. 1 is the structural representation for the sprinkling control system that the specific embodiment of the invention provides；
Fig. 2 is the flow chart for the sprinkling control method that the specific embodiment of the invention provides.
In figure：
11st, hydraulic oil container；12nd, the first magnetic valve；13rd, hydraulic motor；
21st, water tank；22nd, second solenoid valve；23rd, water pump；24th, nozzle；
31st, low tension switch；32nd, high pressure sensor；
41st, controller；42nd, display.
Embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by embodiment.
As shown in figure 1, present embodiments provide for a kind of sprinkling control system, including watering component, hydraulic package, control
Component and drive component, watering component include water tank 21, water pump 23 and nozzle 24, and water tank 21 is located at the water inlet end of water pump 23, spray
Mouth 24 is located at the water side of water pump 23；Control assembly includes high pressure sensor 32 and controller 41, controller 41 and high pressure sensing
Device 32 electrically connects, and high pressure sensor 32 is located on the outlet pipeline of water pump 23, and control assembly can control the periodicity of water pump 23
Folding；Drive component is connected with watering component and control assembly respectively.The present invention is by using high pressure sensor 32 and controller 4
The mode of electrical connection, for indicating whether sprinkler system blocks, so as to solve existing sprinkler system without blocking alarm work(
The problem of energy.
Specifically, control assembly also includes the low tension switch 31 on the inlet pipeline of water pump 23, the He of low tension switch 31
Controller 41 electrically connects.Drive component is hydraulic-driven component, and hydraulic-driven component includes hydraulic oil container 11 and hydraulic motor 13,
Hydraulic motor 13 is connected with water pump 23.Drive component can also be electric drive, drive form is not defined herein.
Specifically, control assembly also includes the first magnetic valve 12 and second solenoid valve 22, and the first magnetic valve 12 is located at hydraulic pressure
Between fuel tank 11 and hydraulic motor 13, second solenoid valve 22 is located at the water side of water pump 23, and the first magnetic valve 12 and the second electricity
Magnet valve 22 electrically connects with controller 41.In addition, sprinkling control system also includes display 42, display 42 and the electricity of controller 41
Connection.
In above-mentioned sprinkling control system, control oil circuit acts on hydraulic motor 13, hydraulic pressure horse by the first magnetic valve 12
Water pump 23 is driven up to 13, water pump 23 absorbs water from water tank 21, by second solenoid valve 22 and sprinkling pipeline, water is sprayed from nozzle 24
Go out.Low tension switch 31 of sprinkling water is arranged on the water inlet of water pump 23, and watering high pressure sensor 32 is arranged on the delivery port of water pump 23
Place, the two by sensor sensing to alarm signal pass to controller 41, controller 41 controls the first magnetic valve 12 and second
The break-make of magnetic valve 22, so as to control the break-make of oil circuit and water route, and warning message is shown on the display 42.Work as water
During 21 water shortage of case, the water suction of water pump 23 can produce negative pressure, and when pressure is reduced to predetermined threshold value A, watering low tension switch 31 closes, then
Signal is passed into controller 41, controller 41 cuts off the output of the first magnetic valve 12 and second solenoid valve 22, and watering stops,
For protecting water pump 23 not to be emptied damage, and the display of water shortage warning message is carried out on the display 42, to prompt client
Add water.When sprinkling pipeline or nozzle 24 block, when pressure increases to predetermined threshold value B, watering high pressure sensor 32 passes signal
Controller 41 is passed, controller 41 cuts off the output of second solenoid valve 22, opens second solenoid valve 22 after certain time again, with
Upper process reciprocation cycle, the hydraulic pressure in sprinkling pipeline change from small to big, from large to small, so that tamper is sprayed from nozzle 24, spilt
Water recovers normal.If pressure persistently increases, when increasing to predetermined threshold value C, then it is assumed that stopping state is serious, can not be by back and forth spilling
Water sprays tamper, and now controller 41 cuts off the first magnetic valve 12 and second solenoid valve 22, and watering stops, and believes blocking
Number passing to display 42 carries out blocking alarm indication.Wherein, predetermined threshold value C is more than predetermined threshold value B, and predetermined threshold value B is more than pre-
If threshold value A.
The sprinkling control system that present embodiment provides has water shortage alarm and blocks two kinds of functions of alarm, and according to
Different alarms has different processing modes, stops watering when water shortage is alarmed, protects water pump not to be emptied, when blocking alarm, week
Phase circulation watering, does not on the one hand influence work, and circulating start and outage of on the other hand sprinkling water, pressure constantly changes, can by tamper from
Nozzle sprays, and both watering patterns can both protect water pump, water pipe, can not influence work to greatest extent again, so as to drop
Low labor strength, improve operating efficiency.
Specifically, electric programme-control schematic diagram as shown in Figure 2, concrete operations are as follows：
(1) watering button is clicked on, whether the detection watering low tension switch 31 of controller 41 closes, if watering low tension switch 31 is protected
Disconnection is held, then controller 41 controls the first magnetic valve 12 to open, and hydraulic motor 13 is started working, to drive water pump 23 to work；If
Low tension switch 31 closes, then controller 41 controls the first magnetic valve 12 and second solenoid valve 22 to close, and watering stops, controller
Signal of water shortage is fed back to display 42 by 41, and water shortage warning message is shown on display 42.
(2) detection of controller 41 watering high pressure sensor 32, if the pressure of sprinkling pipeline is less than 5bar, controller 41 controls
Second solenoid valve 22 is opened, and watering is normally carried out.If the pressure of sprinkling pipeline is higher than 5bar, and continues 2s, then controller 41 is controlled
Second solenoid valve 22 processed is closed, and controller 41 controls second solenoid valve 22 to open again after 1s, and above procedure is back and forth carried out, until spilling
The pressure of water lines is less than 5bar or higher than 7bar.
(3) if the pressure of sprinkling pipeline is less than 5bar, and 2s is continued, then controller 41 persistently controls the second solenoid valve 22 to be
Open mode, watering are normal.
(4) if the pressure of sprinkling pipeline is higher than 7bar, and during lasting 1s, reached water pump 23 this moment bears pressure,
Controller 41 controls the first magnetic valve 12 and second solenoid valve 22 to close, and watering stops, and controller 41 feeds back to jam signal
Display 42, show on display 42 and block warning message.
Specifically, a kind of milling machine, including sprinkling control system as described above, the sprinkling control system are milling machine
Water shortage alarm is provided and blocks two kinds of watering patterns of alarm, both watering patterns can both protect water pump, water pipe, again can be most
Limits do not influence work, so as to reduce labor strength, improve operating efficiency.
Obviously, the above embodiment of the present invention is just for the sake of clearly illustrating example of the present invention, and it is pair to be not
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement made within the spirit and principle of invention etc., should be included in the claims in the present invention
Protection domain within.
Claims (10)
- A kind of 1. sprinkling control system, it is characterised in that including：Watering component, it includes water tank (21), water pump (23) and nozzle (24), and the water tank (21) is located at the water pump (23) Water inlet end, the nozzle (24) are located at the water side of the water pump (23)；Control assembly, it includes high pressure sensor (32) and controller (41), the controller (41) and the high pressure sensor (32) electrically connect, the high pressure sensor (32) is located on the outlet pipeline of the water pump (23), and the control assembly can be controlled Make the periodicity folding of the water pump (23)；Drive component, it is connected with the watering component and the control assembly respectively.
- 2. sprinkling control system according to claim 1, it is characterised in that the control assembly also includes being located at the water Low tension switch (31) on the inlet pipeline of pump (23), the low tension switch (31) and the controller (41) electrical connection.
- 3. sprinkling control system according to claim 2, it is characterised in that the drive component is hydraulic-driven component, The hydraulic-driven component includes hydraulic oil container (11) and hydraulic motor (13), the hydraulic motor (13) and the water pump (23) Connection.
- 4. sprinkling control system according to claim 3, it is characterised in that the control assembly also includes the first magnetic valve (12) and second solenoid valve (22), first magnetic valve (12) are located at the hydraulic oil container (11) and the hydraulic motor (13) Between, the second solenoid valve (22) is located at the water side of the water pump (23), and first magnetic valve (12) and described Two magnetic valves (22) electrically connect with the controller (41).
- 5. according to sprinkling control system according to any one of claims 1 to 4, it is characterised in that also including display (42), The display (42) electrically connects with the controller (41).
- A kind of 6. control method for being applied to the sprinkling control system as any one of Claims 1 to 5, it is characterised in that The delivery port pressure of high pressure sensor (32) detection water pump (23), and controller (41) is sent a signal to, controller (41) is sentenced The delivery port pressure of water cut-off pump (23)；If the delivery port pressure of water pump (23) is higher than predetermined threshold value B, controller (41) controls water pump (23) periodicity folding, then Judge whether the delivery port pressure of water pump (23) is higher than predetermined threshold value C using controller (41), wherein predetermined threshold value C is more than default Threshold value B；If the delivery port pressure of water pump (23) is higher than predetermined threshold value C, blocking alarm is carried out.
- 7. control method according to claim 6, it is characterised in that if the delivery port pressure of water pump (23) is not higher than default Threshold value B, then controller (41) the first magnetic valve of control (12) and second solenoid valve (22) unlatching, nozzle (24) are normally sprinkled water.
- 8. control method according to claim 6, it is characterised in that the water inlet of low tension switch (31) detection water pump (23) Pressure, and controller (41) is sent a signal to, controller (41) judges the water inlet pressure of water pump (23).
- 9. control method according to claim 8, it is characterised in that if the water inlet pressure of water pump (23) is less than default threshold Value A, then low tension switch (31) closure, controller (41) control the first magnetic valve (12) and second solenoid valve (22) closure, and general Signal of water shortage is sent to display (42), and display (42) shows water shortage information, wherein, predetermined threshold value B is more than predetermined threshold value A.
- 10. control method according to claim 8, it is characterised in that if the water inlet pressure of water pump (23) is not less than pre- If threshold value A, then low tension switch (31) is opened, and controller (41) controls the first magnetic valve (12) and second solenoid valve (22) to open.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711165916.2A CN107747269A (en) | 2017-11-21 | 2017-11-21 | A kind of sprinkling control system and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711165916.2A CN107747269A (en) | 2017-11-21 | 2017-11-21 | A kind of sprinkling control system and its control method |
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| CN107747269A true CN107747269A (en) | 2018-03-02 |
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| CN201711165916.2A Pending CN107747269A (en) | 2017-11-21 | 2017-11-21 | A kind of sprinkling control system and its control method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677855A (en) * | 2018-07-06 | 2018-10-19 | 北京京环装备设计研究院有限公司 | Sprinkling truck automatic control system |
| CN112525511A (en) * | 2020-11-30 | 2021-03-19 | 江苏大学 | Jet pulse tee bend experimental apparatus |
| CN112539166A (en) * | 2020-11-06 | 2021-03-23 | 江苏徐工工程机械研究院有限公司 | Hydraulic control system and dredging equipment |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201309868Y (en) * | 2008-11-03 | 2009-09-16 | 王云凯 | Household water purifier supplying water according to the quality degree |
| CN102278241A (en) * | 2011-07-12 | 2011-12-14 | 浙江银轮机械股份有限公司 | On-line spraying descaling method and system for exhaust gas recirculation cooler of diesel engine |
| CN102828460A (en) * | 2012-09-12 | 2012-12-19 | 三一重工股份有限公司 | High and low pressure integrated water sprinkler system and engineering machine |
| CN103038471A (en) * | 2010-06-23 | 2013-04-10 | 英瑞杰汽车系统研究公司 | Method for monitoring an SCR system |
| CN103696350A (en) * | 2014-01-10 | 2014-04-02 | 戴纳派克（中国）压实摊铺设备有限公司 | Milling machine watering control system and control method thereof |
| CN104145923A (en) * | 2014-08-01 | 2014-11-19 | 吉林大学 | System and method for eliminating nozzle blockage faults of pesticide spraying machine |
| CN204455776U (en) * | 2015-02-02 | 2015-07-08 | 侯天宇 | A kind of water injector of road roller |
| US20170152637A1 (en) * | 2012-10-30 | 2017-06-01 | Capstan Ag Systems, Inc. | System and method for applying multi-colored surface markings to a surface |
| CN106907837A (en) * | 2017-03-22 | 2017-06-30 | 珠海格力电器股份有限公司 | The method of supplying water of air-conditioning, device and system |
-
2017
- 2017-11-21 CN CN201711165916.2A patent/CN107747269A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201309868Y (en) * | 2008-11-03 | 2009-09-16 | 王云凯 | Household water purifier supplying water according to the quality degree |
| CN103038471A (en) * | 2010-06-23 | 2013-04-10 | 英瑞杰汽车系统研究公司 | Method for monitoring an SCR system |
| CN102278241A (en) * | 2011-07-12 | 2011-12-14 | 浙江银轮机械股份有限公司 | On-line spraying descaling method and system for exhaust gas recirculation cooler of diesel engine |
| CN102828460A (en) * | 2012-09-12 | 2012-12-19 | 三一重工股份有限公司 | High and low pressure integrated water sprinkler system and engineering machine |
| US20170152637A1 (en) * | 2012-10-30 | 2017-06-01 | Capstan Ag Systems, Inc. | System and method for applying multi-colored surface markings to a surface |
| CN103696350A (en) * | 2014-01-10 | 2014-04-02 | 戴纳派克（中国）压实摊铺设备有限公司 | Milling machine watering control system and control method thereof |
| CN104145923A (en) * | 2014-08-01 | 2014-11-19 | 吉林大学 | System and method for eliminating nozzle blockage faults of pesticide spraying machine |
| CN204455776U (en) * | 2015-02-02 | 2015-07-08 | 侯天宇 | A kind of water injector of road roller |
| CN106907837A (en) * | 2017-03-22 | 2017-06-30 | 珠海格力电器股份有限公司 | The method of supplying water of air-conditioning, device and system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677855A (en) * | 2018-07-06 | 2018-10-19 | 北京京环装备设计研究院有限公司 | Sprinkling truck automatic control system |
| CN112539166A (en) * | 2020-11-06 | 2021-03-23 | 江苏徐工工程机械研究院有限公司 | Hydraulic control system and dredging equipment |
| CN112525511A (en) * | 2020-11-30 | 2021-03-19 | 江苏大学 | Jet pulse tee bend experimental apparatus |
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Application publication date: 20180302 |