CN102287565B - Automatic switching output control valve for pressure sensing signals and method - Google Patents
Automatic switching output control valve for pressure sensing signals and method Download PDFInfo
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- CN102287565B CN102287565B CN 201110187612 CN201110187612A CN102287565B CN 102287565 B CN102287565 B CN 102287565B CN 201110187612 CN201110187612 CN 201110187612 CN 201110187612 A CN201110187612 A CN 201110187612A CN 102287565 B CN102287565 B CN 102287565B
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- mouth
- pressure
- spool
- control valve
- oil
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Abstract
The invention relates to an automatic switching output control valve for pressure sensing signals and a method. The control valve comprises a pressure switching control valve body, a switching-out control valve core component, a switching-in control valve core component, a main switching valve body, a main switching valve core, a switching-in pressure regulating component, a forcing low-speed valve body and a forcing low-speed valve core. The right side of the pressure switching control valve body is fixedly provided with the main switching valve body, the lower part of the main switching valve body is fixedly connected with the forcing low-speed valve body, the forcing low-speed valve core is arranged in the forcing low-speed valve body, the main switching valve core in the main switching valve body is vertically connected with the switching-out control valve core component in the pressure switching control valve body, and the outer side of the main switching valve body at the right end of the main switching valve core is provided with the switching-in pressure regulating component. The sensitivity of the device can be improved while the flow capacity of the existing control valve is guaranteed.
Description
Technical field
The invention belongs to the control valve technical field, particularly relate to a kind of pressure sensitive signal automatic switching output control valve and method.
Background technique
Control valve claims again modulating valve, is the main performance element instrument in the industrial process control, by accepting the control signal of regulation unit output, removes to change fluid flow by power operation.Control valve generally is comprised of actuator and valve.If join the power that actuator uses by it, that control valve can be divided into is pneumatic, electronic, surge, manually and five kinds of self-powering types, i.e. pneumatic control valve take pressurized air as power source, motor-operated control valve take electricity as power source, electric hydraulic control valve take liquid medium (such as wet goods) pressure as power, manually operated hand control valve, the pressure that relies on medium self in the valve of flowing through or temperature are as the direct-operated regulator of driven by energy, in addition, divide by its function and characteristic, also have solenoid valve, electronic type, intellectual, field bus type control valve etc.
But when flow was high, sensitivity descended at existing control valve, thereby can't adapt to complicated operating mode.
Summary of the invention
Technical problem to be solved by this invention provides a kind of pressure sensitive signal automatic switching output control valve and method, can be in the situation that guarantee but existing control valve through-current capability the sensitivity of raising device.
The technical solution adopted for the present invention to solve the technical problems is: a kind of pressure sensitive signal automatic switching output control valve is provided, comprise pressure switching controls valve body, cut out the control valve core assembly, incision control valve core assembly, main switching valve, the main spool that switches, incision pressure adjusting part, force the low speed valve body and force the low speed spool, described pressure switching controls valve body right side is mounted with main switching valve, main switching valve bottom is connected and fixed forces the low speed valve body and forces the low speed valve inner that pressure low speed spool is installed, main in the main switching valve switches and cuts out that the control valve core assembly is vertical to be connected in spool and the pressure switching controls valve body, and the main main switching valve outside of switching the spool right-hand member also is equipped with cuts the pressure adjusting part.
Be connected for screw between described pressure switching controls valve body and the main switching valve.
A kind of method of working pressure induced signal automatic switching output control valve comprises the following steps:
(1) when the fixed signal output precision is inputted the PP mouth without pilot pressure: the fixed signal spool is in the home position, and P mouth pressure oil communicates with B mouth signal port, and A mouth signal port communicates with oil return T mouth; At this moment, the fixed signal mouth is the output of B mouth, the oil extraction of A mouth;
(2) when the fixed signal output precision has pilot pressure input PP mouth:
During original state, high voltage induction end pressure oil directly communicates with oil return inlet T by low pressure induction control spool, and P mouth pilot pressure oil communicates with signal port A mouth, and B mouth signal port communicates with oil return T mouth; At this moment, signal port is the output of A mouth, the oil extraction of B mouth;
(3) when pilot pressure promotion fixed signal spool is in left position, P mouth pressure oil enters low pressure induction control spool bottom, promoting low pressure induction control spool moves up, P mouth pressure oil enters into high voltage induction control spool left end, when pressure reaches high voltage induction adjusting part preheating setting pressure, pressure oil promotes high voltage induction control spool, and the main spool that switches of promotion moves right; Simultaneously, P mouth pressure oil communicates with signal port B mouth by the main spool that switches, and A mouth signal port communicates with oil return T mouth; At this moment, signal port is the output of B mouth, the oil extraction of A mouth; Because high voltage induction control spool induction open area is much smaller than opening rear pressure-acting area, when the P mouth pressure was lower than the high voltage induction preheating setting pressure, main switching valve can not return to original state, did not namely change signal port output;
(4) when the P mouth pressure was lower than low pressure induction control valve core assembly precompression, low pressure induction control valve core reset moved down, and high voltage induction end pressure oil directly communicates with oil return inlet T, and main switching valve resets; P mouth pilot pressure oil communicates with signal port A mouth, and B mouth signal port communicates with oil return T mouth; At this moment, signal port is the output of A mouth, the oil extraction of B mouth.
Beneficial effect
Advantage of the present invention has:
1, high induction sensitivity is impacted littlely, and reaction is fast;
2, through-current capability is large, the pressure loss is little;
3, iso standard interface.
Description of drawings
Fig. 1 is sectional view of the present invention.
Fig. 2 is circuit controling drawing of the present invention.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiments only to be used for explanation the present invention and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
Embodiment 1
As shown in Figure 1, a kind of pressure sensitive signal automatic switching output control valve, comprise pressure switching controls valve body 1, cut out control valve core assembly 2, incision control valve core assembly 3, main switching valve 4, the main spool 5 that switches, incision pressure adjusting part 6, force low speed valve body 7 and force low speed spool 8, described pressure switching controls valve body 1 right side is mounted with main switching valve 4, main switching valve 4 bottoms are connected and fixed forces low speed valve body 7 and forces low speed valve body 7 inside that pressure low speed spool 8 is installed, main in the main switching valve 4 switches and cuts out 2 vertical connections of control valve core assembly in spool 5 and the pressure switching controls valve body 1, and main switching valve 4 outsides of main switching spool 5 right-hand members also are equipped with cuts pressure adjusting part 6.
Be connected for screw between described pressure switching controls valve body 1 and the main switching valve 4.
As shown in Figure 2, a kind of pressure sensitive signal automatic switching output control valve method comprises
1, the fixed signal output precision is inputted the PP mouth without pilot pressure: the fixed signal spool is in the home position, and P mouth pressure oil communicates with B mouth signal port, and A mouth signal port communicates with oil return T mouth.At this moment, the fixed signal mouth is the output of B mouth, the oil extraction of A mouth.
2, the fixed signal output precision has pilot pressure input PP mouth:
During original state, high voltage induction end pressure oil directly communicates with oil return inlet T by low pressure induction control spool.P mouth pilot pressure oil communicates with signal port A mouth, and B mouth signal port communicates with oil return T mouth.At this moment, signal port is the output of A mouth, the oil extraction of B mouth;
When pilot pressure promotion fixed signal spool is in left position, P mouth pressure oil enters low pressure induction control spool bottom, promoting low pressure induction control spool moves up, P mouth pressure oil enters into high voltage induction control spool left end, when pressure reaches high voltage induction adjusting part preheating setting pressure, pressure oil promotes high voltage induction control spool, and the main spool that switches of promotion moves right.Simultaneously, P mouth pressure oil communicates with signal port B mouth by the main spool that switches, and A mouth signal port communicates with oil return T mouth.At this moment, signal port is the output of B mouth, the oil extraction of A mouth.Because high voltage induction control spool induction open area is much smaller than opening rear pressure-acting area, when the P mouth pressure was lower than the high voltage induction preheating setting pressure, main switching valve can not return to original state, did not namely change signal port output.
When the P mouth pressure was lower than low pressure induction control valve core assembly precompression, low pressure induction control valve core reset moved down, and high voltage induction end pressure oil directly communicates with oil return inlet T, and main switching valve resets.P mouth pilot pressure oil communicates with signal port A mouth, and B mouth signal port communicates with oil return T mouth.At this moment, signal port is the output of A mouth, the oil extraction of B mouth.
1, maximum service pressure: 24.5Mpa;
2, Forced Valve cracking pressure: 1.5Mpa;
3, maximum output flow: the 60L/min of signal port;
4, high voltage induction (incision) is regulated pressure: 12-22.5Mpa;
5, low pressure induction (cutting out) preset pressure: 3.2Mpa.
Claims (1)
1. pressure sensitive signal automatic switchover output intent, working pressure induced signal automatic switching output control valve, this pressure sensitive signal automatic switching output control valve comprises pressure switching controls valve body (1), cut out control valve core assembly (2), incision control valve core assembly (3), main switching valve (4), the main spool (5) that switches, incision pressure adjusting part (6), force low speed valve body (7) and force low speed spool (8), described pressure switching controls valve body (1) right side is mounted with main switching valve (4), main switching valve (4) bottom is connected and fixed forces low speed valve body (7) and forces low speed valve body (7) inside that pressure low speed spool (8) is installed, main in the main switching valve (4) switches and cuts out vertical connection of control valve core assembly (2) in spool (5) and the pressure switching controls valve body (1), main main switching valve (4) outside of switching spool (5) right-hand member also is equipped with incision pressure adjusting part (6), it is characterized in that, comprise the following steps:
(1) when the fixed signal output precision is inputted the PP mouth without pilot pressure: the fixed signal spool is in the home position, and P mouth pressure oil communicates with B mouth signal port, and A mouth signal port communicates with oil return T mouth; At this moment, the fixed signal mouth is the output of B mouth, the oil extraction of A mouth;
(2) when the fixed signal output precision has pilot pressure input PP mouth:
During original state, high voltage induction end pressure oil directly communicates with oil return inlet T by low pressure induction control spool, and P mouth pilot pressure oil communicates with signal port A mouth, and B mouth signal port communicates with oil return T mouth; At this moment, signal port is the output of A mouth, the oil extraction of B mouth;
(3) when pilot pressure promotion fixed signal spool is in left position, P mouth pressure oil enters low pressure induction control spool bottom, promoting low pressure induction control spool moves up, P mouth pressure oil enters into high voltage induction control spool left end, when pressure reaches high voltage induction adjusting part preheating setting pressure, pressure oil promotes high voltage induction control spool, and the main spool that switches of promotion moves right; Simultaneously, P mouth pressure oil communicates with signal port B mouth by the main spool that switches, and A mouth signal port communicates with oil return T mouth; At this moment, signal port is the output of B mouth, the oil extraction of A mouth; Because high voltage induction control spool induction open area is much smaller than opening rear pressure-acting area, when the P mouth pressure was lower than the high voltage induction preheating setting pressure, main switching valve can not return to original state, did not namely change signal port output;
(4) when the P mouth pressure was lower than low pressure induction control valve core assembly precompression, low pressure induction control valve core reset moved down, and high voltage induction end pressure oil directly communicates with oil return inlet T, and main switching valve resets; P mouth pilot pressure oil communicates with signal port A mouth, and B mouth signal port communicates with oil return T mouth; At this moment, signal port is the output of A mouth, the oil extraction of B mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110187612 CN102287565B (en) | 2011-07-05 | 2011-07-05 | Automatic switching output control valve for pressure sensing signals and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110187612 CN102287565B (en) | 2011-07-05 | 2011-07-05 | Automatic switching output control valve for pressure sensing signals and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102287565A CN102287565A (en) | 2011-12-21 |
| CN102287565B true CN102287565B (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110187612 Expired - Fee Related CN102287565B (en) | 2011-07-05 | 2011-07-05 | Automatic switching output control valve for pressure sensing signals and method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9625349B2 (en) * | 2012-02-29 | 2017-04-18 | Fisher Controls International Llc | Time-stamped emissions data collection for process control devices |
| CN103697213B (en) * | 2013-12-23 | 2015-03-11 | 新乡市平原工业滤器有限公司 | Electronic control pressure regulating valve assembly |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1181475A (en) * | 1996-10-28 | 1998-05-13 | 速睦喜股份有限公司 | Pilot 3-port transfer valve |
| CN101324280A (en) * | 2007-06-15 | 2008-12-17 | Smc株式会社 | Manifold-type solenoid valve apparatus having stop valve |
| CN202266531U (en) * | 2011-07-05 | 2012-06-06 | 宁波斯达弗液压传动有限公司 | A pressure sensing signal automatic switchover output control valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10325379A1 (en) * | 2003-06-05 | 2004-12-23 | Robert Bosch Gmbh | Tank ventilation valve |
-
2011
- 2011-07-05 CN CN 201110187612 patent/CN102287565B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1181475A (en) * | 1996-10-28 | 1998-05-13 | 速睦喜股份有限公司 | Pilot 3-port transfer valve |
| CN101324280A (en) * | 2007-06-15 | 2008-12-17 | Smc株式会社 | Manifold-type solenoid valve apparatus having stop valve |
| CN202266531U (en) * | 2011-07-05 | 2012-06-06 | 宁波斯达弗液压传动有限公司 | A pressure sensing signal automatic switchover output control valve |
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| Publication number | Publication date |
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| CN102287565A (en) | 2011-12-21 |
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Granted publication date: 20131023 Termination date: 20170705 |