CN103977977B - The chain control method of gunlock of giant pumping plant - Google Patents
The chain control method of gunlock of giant pumping plant Download PDFInfo
- Publication number
- CN103977977B CN103977977B CN201410235004.8A CN201410235004A CN103977977B CN 103977977 B CN103977977 B CN 103977977B CN 201410235004 A CN201410235004 A CN 201410235004A CN 103977977 B CN103977977 B CN 103977977B
- Authority
- CN
- China
- Prior art keywords
- pressure
- controller
- hydraulic pump
- giant
- pressure hydraulic
- 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.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
- B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
- B08B2203/0223—Electric motor pumps
Abstract
The invention belongs to cleaning equipment and control technical field, relate to the chain control method of gunlock of a kind of giant pumping plant.It comprises the following steps: A, arrange a check valve on the water supply line connecting giant and high-pressure hydraulic pump, one pressure switch is respectively set in check valve both sides, the outfan of two pressure switches connects controller, and the output relay of controller connects high-pressure hydraulic pump；B, the control logic of setting controller be: two pressure switches detect no pressure signal i.e. logical value when being 0 simultaneously, and the output relay logical value of controller is 1, runs high-pressure hydraulic pump；Two any one generation state change i.e. logical values 0 to 1 or 1 to 0 of pressure switch, the logical value of controller all can be become 0 by 1, and delaying time of controller output stopping signal is to high-pressure hydraulic pump, and high-pressure hydraulic pump i.e. can stop in time delay.Present invention giant controls high-pressure hydraulic pump, has reached the effect that energy-conservation, safety, the suitability are wide.
Description
Technical field
The invention belongs to cleaning equipment and control technical field, relate to a kind of giant pumping plant
The chain control method of gunlock.
Background technology
In actual life, the giant of carwash or cleaning equipment is configured that high pressure
Water pump, water pipe, hydraulic giant.I.e. water pump and hydraulic giant is directly connected to, after opening water pump, and hydraulic giant
Competence exertion effect.People in actual use, need first to open water pump, then
The position that going further to needs to clean carries out operation, after cleaning, needs again to walk pass of returning
Close water pump, very inconvenient.It addition, there is also the problem of safety, when the work of people
Causing hydraulic giant to be slipped out of the hand due to contingency when of industry, hydraulic giant cuts out, and water pump can not
Close down in time, it is likely that cause danger.Therefore, operate by the mode of pump control hydraulic giant
Property is poor.
People are through constantly exploring, it is proposed that various solutions, such as China
Patent documentation disclose a kind of lathe hydraulic giant water supply apparatus for controlling pump [notification number:
CN203061526U], including water pump, ball valve, check valve, point water block, pressure switch,
Water pipe and hydraulic giant；Described water pump is connected with the left end of described ball valve；The right side of described ball valve
End is connected with the left end of described check valve；The right-hand member of described check valve and described point of water block
It is connected；Described pressure switch is connected with described point of water block；Described water pipe with described point
Water block is connected；Described hydraulic giant is arranged on described water pipe.
Such scheme water pump can carry out opening according to the actual open and close state of hydraulic giant automatically,
Stop, it is not necessary to Artificial Control, convenient operation；It addition, water pump is without long-play, no
Only extend the service life of water pump, and save electric power resource in a large number, reduce and use
Expense.But, such scheme is only provided with a pressure switch, in actually used process
In, security performance is not good enough and needs to change different nozzles could realize different use pressures
Power, the suitability of equipment is poor.
Generally, single pressure switch has two kinds of mounting means, before one is contained in unloader,
After one is installed in pressure regulator valve (unloader and pressure regulator valve are distinguished: unloader can only off-load,
Keeping during off-load setting pressure, pressure regulator valve can electrodeless regulation pressure and pressure during full off-load
Tend to 0).
Before being contained in unloader: unload charge values as 10MPa as set relief valve, pressure switch
Preset value is 9MPa (preset value of pressure switch does not allow operation change after dispatching from the factory).Requirement
Pressure is 1# nozzle to be used when being 5MPa, and after closing spray gun, the pressure in pipeline will be dashed forward
So raising, when rising to 9MPa, machine just can stop.Require to want when pressure is 2MPa
Changing 2# nozzle, be also same when rising to 9MPa after closing spray gun, machine just can stop
Car；Need multiple pressure will standby a lot of models nozzle in case change, it is clear that less
Convenient, say, that to join adaptive poor.
And in real process, close suddenly spray gun, compression shock, wink will be produced
The preset pressure or higher that Shi Huiyou is more than 1.5 times, pressure can not discharge rapidly will lead
Cause the danger such as booster, leakage.Because this mode can determine to have during pipeline off-load one
Lasting back pressure, so its danger is higher.
After being contained in pressure regulator valve: set force value during full off-load, when pressure switch detects
During to full off-load, equipment stops.This pressure switch is usually diaphragm type structure, real
Trample proof its reliability at present very poor, be difficult to tolerate this unexpected compression shock, therefore
Safety is poor.
Summary of the invention
It is an object of the invention to for the problems referred to above, it is provided that one can improve giant pump
The chain control method of gunlock of the giant pumping plant of safety and the controlling of standing.
For reaching above-mentioned purpose, present invention employs following technical proposal: a kind of water under high pressure
The chain control method of gunlock of rifle pumping plant, comprises the following steps:
A, arrange on the water supply line connecting giant and high-pressure hydraulic pump one unidirectional
Valve, respectively arranges a pressure switch, the outfan of two pressure switches in check valve both sides
Connecting controller, the output relay of controller connects high-pressure hydraulic pump, and to two pressure
Switch sets different pressure set points；
B, the control logic of setting controller be: two pressure switches detect no pressure simultaneously
When signal i.e. logical value is 0, the output relay logical value of controller is 1, runs height
Water pump；Two pressure switches any one occur state change i.e. logical values 0 to 1 or
1 to 0, the logical value of controller all can be become 0 by 1, and delaying time of controller output stops signal
To high-pressure hydraulic pump, high-pressure hydraulic pump i.e. can stop in time delay.
In the chain control method of gunlock of above-mentioned giant pumping plant, pressure switch is
Can detect the electronically or mechanically formula pressure switch of signal and output signal, controller is PLC
Or relay logical control assembly.
Compared with prior art, it is an advantage of the current invention that:
The detection of double pressure switches is qualitative value, it is not necessary to very accurate, therefore susceptiveness is relatively
Height, the structural shape of two pressure switches and check valve is plunger type, prevents high-voltage tube
" water hammer " phenomenon in road impacts destruction to high-pressure pump, in practice it has proved that its performance is
Sufficiently stable and reliable；Compared with control with single pressure switch, double pressure switch pressure
Off-load is rapider, and safety is higher, is suitable for the operation of different pressures, and the suitability is wider；
Present invention achieves gunlock chain, control high-pressure hydraulic pump with giant, reached energy-conservation,
The effect that safety, the suitability are wide.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention provides；
Fig. 2 is the input and output schematic diagram of the controller that the present invention provides.
In figure: giant 1, high-pressure hydraulic pump 2, water supply line 3, check valve 4, pressure
Power switch 5, controller 6.
Detailed description of the invention
With detailed description of the invention the present invention done further details of theory below in conjunction with the accompanying drawings
Bright.
As it is shown in figure 1, the chain control method of gunlock of a kind of giant pumping plant, it is special
Levy and be, comprise the following steps:
A, on the water supply line 3 connecting giant 1 and high-pressure hydraulic pump 2, arrange one
Check valve 4, respectively arranges a pressure switch 5, two pressure switches in check valve 4 both sides
The outfan of 5 connects controller 6, and the output relay of controller 6 connects high-pressure hydraulic pump
2, and two pressure switches 5 are set different pressure set points；
B, the control logic of setting controller 6 be: two pressure switches 5 detect nothing simultaneously
When pressure signal i.e. logical value is 0, the output relay logical value of controller 6 is 1,
Run high-pressure hydraulic pump 2；Two any one generation state change i.e. logics of pressure switch 5
Value 0 to 1 or 1 to 0, the logical value of controller 6 all can be become 0 by 1, controller 6
Time delay output stopping signal is to high-pressure hydraulic pump 2, and high-pressure hydraulic pump 2 i.e. can stop in time delay.
Pressure switch 5 is that the electronically or mechanically formula pressure that can detect signal and output signal is opened
Closing, controller 6 is PLC or relay logical control assembly.
The operation principle of the present invention is as follows: as in figure 2 it is shown, controller 6 passes through data wire
Connecting two pressure switches 5 and high-pressure hydraulic pump 2, two pressure switches 5 can be by each
Logical value be transferred to controller 6.The pressure detected when pressure switch 5 is less than setting
During value, output relay is in normally open, and logical value is 0, when detecting that pressure is more than
Pressure switch relay Guan Bi during setting value, logical value is 1, two pressure in this example
The pressure set points of table is respectively 5MPa and 10MPa.
The control logic of controller is as shown in table 1 below:
Table 1
When the first pressure switch and the second pressure switch detect no pressure signal i.e. logic simultaneously
When value is 0, the logical value of the output relay of controller is 1, runs high-pressure hydraulic pump.
High-pressure hydraulic pump when running, two pressure switches any one there are states
Change (logical value 0 to 1 or 1 to 0), the logical value of controller all can be become 0 by 1 and prolong
Time output stop, high-pressure hydraulic pump i.e. can time delay stop, time delay stop time can control
Device inputs.
Table 2 is no pressure switch, single pressure switch and the service behaviour ratio of double pressure switch
Right.
Table 2
Table 3 is the results contrast of table 2.
Table 3
By table 2, the comparative analysis of table 3, double pressure switches have the advantage that
1) pressure can with step-less adjustment, and need not change nozzle, if regulation pressure regulation
Valve just can be accomplished, practicality is wider.
2) detection of double pressure switches is qualitative value, it is not necessary to very accurately (open more than pressure
Closing setting value logical value is exactly 1, is exactly 0 less than setting value).
3) double pressure switch construction patterns are plunger types, in practice it has proved that its performance is very
Stable and reliable.
4) there is lasting back pressure during single pressure switch off-load, not as double pressure switch off-loads
Rapider, the safety of double pressure switches is more preferable.
Specific embodiment described herein is only to present invention spirit theory for example
Bright.Those skilled in the art can be to described specific embodiment
Make various amendment or supplement or use similar mode to substitute, but without departing from
The spirit of the present invention or surmount scope defined in appended claims.
Although the most more employ giant 1, high-pressure hydraulic pump 2, water supply line 3,
The terms such as check valve 4, pressure switch 5, controller 6, but be not precluded from using other art
The probability of language.Use these terms to be only used to more easily and describe and explain this
Bright essence；Being construed as any additional restriction is all and present invention spirit
Contrary.
Claims (2)
1. the chain control method of the gunlock of a giant pumping plant, it is characterised in that bag
Include following steps:
A, connecting giant (1) and the water supply line (3) of high-pressure hydraulic pump (2)
On a check valve (4) is set, in check valve (4) both sides, one pressure switch is respectively set
(5), the outfan of two pressure switches (5) connects controller (6), controller (6)
Output relay connect high-pressure hydraulic pump (2), and two pressure switches (5) are set
Different pressure set points；
B, the control logic of setting controller (6) be: two pressure switches (5) are simultaneously
When detection no pressure signal i.e. logical value is 0, the output relay logic of controller (6)
Value is 1, runs high-pressure hydraulic pump (2)；Two any one generation shapes of pressure switch (5)
State change i.e. logical value 0 to 1 or 1 to 0, the logical value of controller (6) all can be by 1
Becoming 0, controller (6) time delay output stops signal to high-pressure hydraulic pump (2), high-pressure hydraulic pump
(2) i.e. can time delay stop.
The chain controlling party of gunlock of giant pumping plant the most according to claim 1
Method, it is characterised in that pressure switch (5) is the electronics that can detect signal and output signal
Or mechanical pressure switch, controller (6) is PLC or relay logical control assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410235004.8A CN103977977B (en) | 2014-05-29 | 2014-05-29 | The chain control method of gunlock of giant pumping plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410235004.8A CN103977977B (en) | 2014-05-29 | 2014-05-29 | The chain control method of gunlock of giant pumping plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103977977A CN103977977A (en) | 2014-08-13 |
| CN103977977B true CN103977977B (en) | 2016-08-10 |
Family
ID=51270283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410235004.8A Expired - Fee Related CN103977977B (en) | 2014-05-29 | 2014-05-29 | The chain control method of gunlock of giant pumping plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103977977B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4180374A (en) * | 1978-03-07 | 1979-12-25 | Bristow Elliott R | Well pump protection system |
| DE3037259C2 (en) * | 1980-10-02 | 1982-09-23 | Lutz 4800 Bielefeld Droitsch | Device for pressure limitation with self-holding for a liquid delivery device |
| DE3526024A1 (en) * | 1985-07-20 | 1987-01-29 | Kaercher Gmbh & Co Alfred | High-pressure cleaning device |
| JP2832803B2 (en) * | 1994-12-31 | 1998-12-09 | 株式会社共和製作所 | Cleaning device and pressure switch for cleaning device |
| CN202860889U (en) * | 2012-10-23 | 2013-04-10 | 谭建忠 | Automatic start-stop device for high pressure water cleaning device |
| CN203061526U (en) * | 2012-12-25 | 2013-07-17 | 纽威数控装备（苏州）有限公司 | Water conveying pump control device for machine tool water gun |
-
2014
- 2014-05-29 CN CN201410235004.8A patent/CN103977977B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN103977977A (en) | 2014-08-13 |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20160810 Termination date: 20180529 |