CN112343884A - Two-stage pilot-controlled high-speed large-flow switch valve and method - Google Patents
Two-stage pilot-controlled high-speed large-flow switch valve and method Download PDFInfo
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- CN112343884A CN112343884A CN202011223076.2A CN202011223076A CN112343884A CN 112343884 A CN112343884 A CN 112343884A CN 202011223076 A CN202011223076 A CN 202011223076A CN 112343884 A CN112343884 A CN 112343884A
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- 230000005540 biological transmission Effects 0.000 abstract description 3
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B2013/002—Modular valves, i.e. consisting of an assembly of interchangeable components
- F15B2013/004—Cartridge valves
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Abstract
The invention belongs to the field of fluid transmission and control, and discloses a two-stage pilot-controlled high-speed large-flow switch valve and a method, wherein the two-stage pilot-controlled high-speed large-flow switch valve comprises the following steps: the control cavity of the two-way cartridge main valve is communicated with the first end of the one-way throttle valve, the control cavity of the small-drift-diameter two-way cartridge valve is communicated with the first end of the pilot electromagnetic valve, a control interface is communicated with the first end of the first damping hole and the first end of the second damping hole, the second end of the one-way throttle valve is communicated with the inlet of the small-drift-diameter two-way cartridge valve and the other end of the second damping hole respectively, the second end of the pilot electromagnetic valve is communicated with the second end of the first damping hole and the oil tank respectively, and the outlet of the small-drift-diameter two-way cartridge valve is communicated with the oil tank. The switch valve is suitable for the occasions of controlling the medium-high pressure large-flow liquid flow direction.
Description
Technical Field
The invention relates to the field of fluid transmission and control, in particular to a two-stage pilot-controlled high-speed large-flow switch valve and a method.
Background
The description of the background of the invention pertaining to the related art to which this invention pertains is given for the purpose of illustration only and for the purpose of facilitating an understanding of the summary of the invention, and should not be read as an admission or admission that the applicant expressly or putatively identified the prior art of the filing date of the first filing date of the present application,
along with the rapid development of engineering machinery, ships, submarines and the like, the scale of the hydraulic system is larger and larger, and a high-speed large-flow reversing valve is required to control some key hydraulic systems so as to meet the requirements of quick response and large flow. At present, the two-position two-way cartridge valve with larger drift diameter is utilized to realize wider high-speed large-flow control, and for the two-position two-way cartridge valve with large drift diameter (DN is more than or equal to 63mm), because the area of a control cavity is larger, the control flow is very large when the rapid reversing is realized, and the electromagnetic pilot control valve with small drift diameter (such as DN10 mm) can not be sufficient, thereby providing special requirements for the design of the high-speed large-flow reversing valve.
Disclosure of Invention
The embodiment of the invention aims to provide a two-stage pilot-controlled high-speed large-flow switch valve and a method.
A two-stage pilot-controlled high-speed large-flow switch valve comprises:
the control cavity of the two-way cartridge main valve is communicated with the first end of the one-way throttle valve, the control cavity of the small-drift-diameter two-way cartridge valve is communicated with the first end of the pilot electromagnetic valve, a control interface is communicated with the first end of the first damping hole and the first end of the second damping hole, the second end of the one-way throttle valve is communicated with the inlet of the small-drift-diameter two-way cartridge valve and the other end of the second damping hole respectively, the second end of the pilot electromagnetic valve is communicated with the second end of the first damping hole and the oil tank respectively, and the outlet of the small-drift-diameter two-way cartridge valve is communicated with the oil tank.
Furthermore, the two-stage pilot-controlled high-speed large-flow switch valve is of an internal control type, and the control interface is communicated with an inlet of the two-way plug-in main valve.
Furthermore, the two-stage pilot-controlled high-speed large-flow switch valve is of an external control type; the control interface is communicated with an external pump source.
Furthermore, the external pump source comprises a filter, a hydraulic pump, an overflow valve, a one-way valve and an energy accumulator, two ends of the filter are respectively communicated with the oil tank and the hydraulic pump, the other end of the hydraulic pump is respectively communicated with the one-way valve and the overflow valve, and the control interface is communicated with the one-way valve and the energy accumulator.
Furthermore, the pilot electromagnetic valve adopts a small-drift-diameter high-frequency-response two-position three-way electromagnetic directional valve;
furthermore, the pilot electromagnetic valve adopts a cone valve sealing type structure.
The application method of the high-speed large-flow switch valve controlled by two-stage pilot comprises the following steps that the switch valve is controlled by two-stage pilot; when the pilot electromagnetic valve is powered off, one path of pressure medium passing through the control interface enters a control cavity of the small-path two-way cartridge valve through the damping hole I and the pilot electromagnetic valve to close the control cavity; the other path enters an inlet of the small-drift-diameter two-way cartridge valve through a damping hole II and simultaneously enters a control cavity of the two-way cartridge main valve through a one-way throttle valve, so that the small-drift-diameter two-way cartridge valve is closed, and the two-way cartridge main valve is also closed; when the pilot electromagnetic valve is electrified, the control cavity of the small-bore two-way cartridge valve is communicated with the oil tank through the pilot electromagnetic valve, the small-bore two-way cartridge valve is opened, the control cavity of the two-way cartridge main valve is communicated with the oil tank through the inlet of the small-bore two-way cartridge valve, and the two-way cartridge main valve is opened.
The application method of the high-speed large-flow switch valve controlled by two-stage pilot comprises the following steps that the switch valve is controlled by two-stage pilot; the control interface is communicated with the inlet of the two-way cartridge main valve, and an internal control mode is adopted, when the high-frequency pilot electromagnetic valve is powered off, a control medium led out from the inlet of the two-way cartridge main valve passes through the control interface, and one path of the control medium enters the control cavity of the small-drift-diameter two-way cartridge main valve through the damping hole I and the high-frequency pilot electromagnetic valve to be closed; the other path enters an inlet of the small-drift-diameter two-way cartridge valve through a damping hole II and simultaneously enters a control cavity of the two-way cartridge main valve through a one-way throttle valve, the small-drift-diameter two-way cartridge valve is closed, the two-way cartridge main valve is also closed, when the high-frequency pilot electromagnetic valve is electrified, the small-drift-diameter two-way cartridge valve is firstly communicated with an oil tank through the pilot electromagnetic valve, the small-drift-diameter two-way cartridge valve is quickly opened, a control cavity of the two-way cartridge main valve is communicated with the oil tank through the inlet of the small-drift-diameter two-way cartridge valve, the pressure of the control cavity of the two-way.
The application method of the high-speed large-flow switch valve controlled by two-stage pilot comprises the following steps that the switch valve is controlled by two-stage pilot; the control interface is communicated with an external pump source and adopts an external control mode; firstly, setting the pressure of an external pump source system to be higher than the inlet pressure of a two-way plug-in main valve by adjusting an external pump source; when the high-frequency pilot electromagnetic valve is powered off, a control medium externally connected with a pump source enters a control cavity of the small-path two-way cartridge valve through the control interface, one path of the control medium passes through the damping hole I and the high-frequency pilot electromagnetic valve to be closed; the other path enters an inlet of the small-drift-diameter two-way cartridge valve through a damping hole II and simultaneously enters a control cavity of the two-way cartridge main valve through a one-way throttle valve; the small-drift-diameter two-way cartridge valve is closed, and the two-way cartridge main valve is also closed; when the high-frequency pilot electromagnetic valve is electrified, the small-path two-way cartridge valve is communicated with the oil tank through the pilot electromagnetic valve, the small-path two-way cartridge valve is opened quickly, the control cavity of the two-way cartridge main valve is communicated with the oil tank through the inlet of the small-path two-way cartridge valve, the pressure of the control cavity of the two-way cartridge main valve is reduced rapidly, and then the two-way cartridge main valve is opened under the action of system pressure.
Furthermore, the pressure of the external pump source system is set to be higher than the inlet pressure of the two-way plug-in main valve by adjusting the external pump source, and the pressure of the external pump source system is set to be higher than the inlet pressure of the two-way plug-in main valve by adjusting an overflow valve of the external pump source.
The embodiment of the invention has the following beneficial effects:
the invention adopts a two-stage pilot control structure, controls the two-way cartridge valve with small drift diameter by the pilot electromagnetic valve to be used as a second-stage pilot element, and realizes internal control and external control by a control interface through internally connecting the inlet of the two-way cartridge main valve or externally connecting a pump source, thereby realizing the increase of control flow, ensuring that the control flow of the cartridge main valve control cavity can quickly flow out/in, further realizing the quick opening and closing control of the large-drift-diameter cartridge main valve, and solving the problem that the existing single-stage pilot electromagnetic valve can not control the large-drift-diameter cartridge valve to realize high-speed and large-flow. The hydraulic control system is simple in assembly, easy to machine and maintain, high in response speed, high in flow capacity, good in sealing performance, free of blocking and the like, is suitable for occasions of controlling the liquid flow direction of a medium-high pressure hydraulic system, and is particularly suitable for being used in a high-speed large-flow hydraulic transmission system.
Drawings
Fig. 1 is a schematic structural diagram of a two-stage pilot-controlled high-speed large-flow switching valve in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an internal control type of a two-stage pilot-controlled high-speed large-flow switching valve in the embodiment of the invention;
fig. 3 is a schematic diagram of an external control type structure of a two-stage pilot-controlled high-speed large-flow switching valve according to an embodiment of the present invention.
Detailed Description
The present application is further described below with reference to examples,
in order to more clearly illustrate the embodiments of the present invention or technical solutions in the prior art, in the following description, different "one embodiment" or "an embodiment" does not necessarily refer to the same embodiment, and different embodiments may be replaced or combined, and for those skilled in the art, other embodiments may be obtained according to the embodiments without creative efforts,
with reference to fig. 1-3, a two-stage pilot-controlled high-speed high-flow switching valve comprises: the control system comprises a two-way cartridge main valve 1, a small-drift-diameter two-way cartridge valve 2, a pilot electromagnetic valve 3, a first damping hole 4, a second damping hole 5, a one-way throttle valve 6 and an oil tank 12, wherein a control cavity C of the two-way cartridge main valve 1 is communicated with the one-way throttle valve 6, a control cavity C of the small-drift-diameter two-way cartridge valve 2 is communicated with the pilot electromagnetic valve 3, a control interface D is communicated with the first damping hole 4 and the second damping hole 5, the other end of the one-way throttle valve 6 is communicated with an inlet a of the small-drift-diameter two-way cartridge valve 2 and the other end of the second damping hole 5, the other end of the pilot electromagnetic valve 3 is communicated with the other end of the first damping hole 4 and the oil; when the pilot electromagnetic valve 3 is powered off, one path of pressure medium passing through the control interface D enters the control cavity c of the small-path two-way cartridge valve 2 through the damping hole I4 and the pilot electromagnetic valve 3 to be closed; the other path enters an inlet a of the small-path two-way cartridge valve 2 through a damping hole II 5, and simultaneously enters a control cavity C of the two-way cartridge main valve 1 through a one-way throttle valve 6, so that the small-path two-way cartridge valve 2 is closed, and the two-way cartridge main valve 1 is also closed; when the pilot electromagnetic valve 3 is electrified, the control cavity C of the small-bore two-way cartridge valve 2 is communicated with the oil tank 12 through the pilot electromagnetic valve 3, the small-bore two-way cartridge valve 2 is opened, the control cavity C of the two-way main valve 1 is communicated with the oil tank 12 through the inlet a of the small-bore two-way cartridge valve 2, and the two-way main valve 1 is opened.
The control interface D can realize internal control and external control through the internal two-way plug-in main valve inlet A or an external pump source. The pilot electromagnetic valve 3 adopts a small-drift-diameter high-frequency-response two-position three-way electromagnetic directional valve, and is structurally in a cone valve sealing type, so that the sealing performance is strong; the electromagnetic driving device adopts a voice coil motor, and has the advantages of large thrust, high response speed, high control precision, strong reliability and the like. The damping hole I4 is used for adjusting the closing speed of the small-drift-diameter two-way cartridge valve 2 and preventing the small-drift-diameter two-way cartridge valve 2 from generating large hydraulic impact when being closed. The second damping hole 5 is used for generating the pressure difference of the opening of the two-way cartridge main valve 1 and can adjust the closing speed of the two-way cartridge main valve 1. The one-way throttle valve 6 is used for adjusting the opening speed of the two-way plug-in main valve 1 and preventing the two-way plug-in main valve 1 from generating large hydraulic impact when being opened quickly.
According to the invention, the small-diameter two-way cartridge valve 2 is added between the pilot electromagnetic valve 3 and the large-diameter two-way cartridge valve main valve 1 to serve as a second-stage pilot element, and the control interface D can realize internal control and external control through the internal connection two-way cartridge valve main valve inlet A or the external connection pump source, so that the control flow of the control cavity C of the two-way cartridge valve main valve is increased, the opening and closing time of the control cavity C is greatly prolonged, and the performance requirements of high speed and high flow are met.
Example 1:
the working principle diagram of the internal control type high-flow high-speed switch valve is shown in figure 2, a control interface D is communicated with an inlet A of a two-way cartridge main valve, and an internal control mode is adopted. When the high-frequency pilot electromagnetic valve 3 is powered off, a control medium led out from an inlet A of the two-way cartridge main valve 1 enters a control cavity c of the small-path two-way cartridge valve 2 through a control interface D and one path of the control medium passes through a damping hole I4 and the high-frequency pilot electromagnetic valve 3 to be closed; the other path enters an inlet a of the small-path two-way cartridge valve 2 through a damping hole II 5 and simultaneously enters a control cavity C of the two-way cartridge main valve 1 through a one-way throttle valve 6. As the small-diameter two-way cartridge valve 2 is closed, the two-way cartridge main valve 1 is also closed. When the high-frequency pilot electromagnetic valve 3 is electrified, firstly, the small-drift-diameter two-way cartridge valve 2 is communicated with the oil tank 12 through the pilot electromagnetic valve 3, the small-drift-diameter two-way cartridge valve 2 is opened rapidly, so that the control cavity C of the two-way main valve 1 is communicated with the oil tank 12 through the inlet a of the small-drift-diameter two-way cartridge valve 2, the pressure of the control cavity of the two-way main valve 1 is reduced rapidly, and then the two-way main valve 1 is opened under the action of system pressure.
Example 2:
the working principle diagram of the external control type large-flow high-speed switch valve is shown in figure 3, a control interface D is communicated with an external pump source, and an external control mode is adopted. The external pump source comprises a filter 7, a hydraulic pump 8, an overflow valve 9, a one-way valve 10 and an energy accumulator 11, two ends of the filter 7 are respectively communicated with an oil tank 12 and the hydraulic pump 8, the other end of the hydraulic pump 8 is respectively communicated with the one-way valve 10 and the overflow valve 9, and a control interface D is communicated with the one-way valve 8 and the energy accumulator 11. Firstly, the pressure of an external pump source system is set to be higher than the inlet pressure of the two-way cartridge main valve 1 by adjusting an overflow valve 9 of the external pump source. When the high-frequency pilot electromagnetic valve 3 is powered off, a control medium externally connected with a pump source enters a control cavity c of the small-path two-way cartridge valve 2 through the control interface D and one path of the control medium passes through the damping hole I4 and the high-frequency pilot electromagnetic valve 3 to be closed; the other path enters an inlet a of the small-path two-way cartridge valve 2 through a damping hole II 5 and simultaneously enters a control cavity C of the two-way cartridge main valve 1 through a one-way throttle valve 6. As the small-diameter two-way cartridge valve 2 is closed, the two-way cartridge main valve 1 is also closed. When the high-frequency pilot electromagnetic valve 3 is electrified, firstly, the small-drift-diameter two-way cartridge valve 2 is communicated with the oil tank 12 through the pilot electromagnetic valve 3, the small-drift-diameter two-way cartridge valve 2 is opened rapidly, so that the control cavity C of the two-way main valve 1 is communicated with the oil tank 12 through the inlet a of the small-drift-diameter two-way cartridge valve 2, the pressure of the control cavity of the two-way main valve 1 is reduced rapidly, and then the two-way main valve 1 is opened under the action of system pressure.
The damping hole I4 in FIGS. 2 and 3 is used for adjusting the closing speed of the small-bore two-way cartridge valve 2 and preventing the small-bore two-way cartridge valve 2 from generating large hydraulic impact when being closed. The second damping hole 5 is used for generating the pressure difference of the opening of the two-way cartridge main valve 1 and can adjust the closing speed of the two-way cartridge main valve 1. The one-way throttle valve 6 is used for adjusting the opening speed of the two-way plug-in main valve 1 and preventing the two-way plug-in main valve 1 from generating large hydraulic impact when being opened quickly.
It should be noted that the above-mentioned embodiments can be freely combined as required, and the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and it will be apparent to those skilled in the art that various changes and modifications can be made, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims (10)
1. A high-speed large-traffic ooff valve of two-stage pilot control, its characterized in that includes:
the control cavity of the two-way cartridge main valve is communicated with the first end of the one-way throttle valve, the control cavity of the small-drift-diameter two-way cartridge valve is communicated with the first end of the pilot electromagnetic valve, a control interface is communicated with the first end of the first damping hole and the first end of the second damping hole, the second end of the one-way throttle valve is communicated with the inlet of the small-drift-diameter two-way cartridge valve and the other end of the second damping hole respectively, the second end of the pilot electromagnetic valve is communicated with the second end of the first damping hole and the oil tank respectively, and the outlet of the small-drift-diameter two-way cartridge valve is communicated with the oil tank.
2. The two-stage pilot-controlled high-speed high-flow switching valve according to claim 1, wherein the two-stage pilot-controlled high-speed high-flow switching valve is of an internal control type, and the control interface is communicated with an inlet of the two-way cartridge main valve.
3. The two-stage pilot-controlled high-speed high-flow switching valve according to claim 1, characterized in that the two-stage pilot-controlled high-speed high-flow switching valve is of an external control type; the control interface is communicated with an external pump source.
4. The two-stage pilot-controlled high-speed large-flow switch valve according to claim 3, wherein the external pump source comprises a filter, a hydraulic pump, an overflow valve, a check valve and an energy accumulator, two ends of the filter are respectively communicated with the oil tank and the hydraulic pump, the other end of the hydraulic pump is respectively communicated with the check valve and the overflow valve, and the control interface is communicated with the check valve and the energy accumulator.
5. The two-stage pilot-controlled high-speed high-flow switch valve according to claim 1, wherein the pilot electromagnetic valve is a two-position three-way electromagnetic directional valve with a small drift diameter and a high frequency response.
6. The two-stage pilot-controlled high-speed high-flow switch valve according to claim 5, wherein the small-drift-diameter high-frequency-response two-position three-way electromagnetic directional valve is of a cone valve sealing type.
7. The use method of the high-speed large-flow switch valve controlled by two-stage pilot is characterized in that the high-speed large-flow switch valve controlled by two-stage pilot is the switch valve in claim 1; when the pilot electromagnetic valve is powered off, one path of pressure medium passing through the control interface enters a control cavity of the small-path two-way cartridge valve through the damping hole I and the pilot electromagnetic valve to close the control cavity; the other path enters an inlet of the small-drift-diameter two-way cartridge valve through a damping hole II and simultaneously enters a control cavity of the two-way cartridge main valve through a one-way throttle valve, so that the small-drift-diameter two-way cartridge valve is closed, and the two-way cartridge main valve is also closed; when the pilot electromagnetic valve is electrified, the control cavity of the small-bore two-way cartridge valve is communicated with the oil tank through the pilot electromagnetic valve, the small-bore two-way cartridge valve is opened, the control cavity of the two-way cartridge main valve is communicated with the oil tank through the inlet of the small-bore two-way cartridge valve, and the two-way cartridge main valve is opened.
8. The use method of the high-speed large-flow switch valve controlled by the two-stage pilot is characterized in that the high-speed large-flow switch valve controlled by the two-stage pilot is the switch valve in claim 2; the control interface is communicated with the inlet of the two-way cartridge main valve, and an internal control mode is adopted, when the high-frequency pilot electromagnetic valve is powered off, a control medium led out from the inlet of the two-way cartridge main valve passes through the control interface, and one path of the control medium enters the control cavity of the small-drift-diameter two-way cartridge main valve through the damping hole I and the high-frequency pilot electromagnetic valve to be closed; the other path enters an inlet of the small-drift-diameter two-way cartridge valve through a damping hole II and simultaneously enters a control cavity of the two-way cartridge main valve through a one-way throttle valve, the small-drift-diameter two-way cartridge valve is closed, the two-way cartridge main valve is also closed, when the high-frequency pilot electromagnetic valve is electrified, the small-drift-diameter two-way cartridge valve is firstly communicated with an oil tank through the pilot electromagnetic valve, the small-drift-diameter two-way cartridge valve is quickly opened, a control cavity of the two-way cartridge main valve is communicated with the oil tank through the inlet of the small-drift-diameter two-way cartridge valve, the pressure of the control cavity of the two-way.
9. The use method of the high-speed large-flow switch valve controlled by the two-stage pilot is characterized in that the high-speed large-flow switch valve controlled by the two-stage pilot is the switch valve in claim 3; the control interface is communicated with an external pump source and adopts an external control mode; firstly, setting the pressure of an external pump source system to be higher than the inlet pressure of a two-way plug-in main valve by adjusting an external pump source; when the high-frequency pilot electromagnetic valve is powered off, a control medium externally connected with a pump source enters a control cavity of the small-path two-way cartridge valve through the control interface, one path of the control medium passes through the damping hole I and the high-frequency pilot electromagnetic valve to be closed; the other path enters an inlet of the small-drift-diameter two-way cartridge valve through a damping hole II and simultaneously enters a control cavity of the two-way cartridge main valve through a one-way throttle valve; the small-drift-diameter two-way cartridge valve is closed, and the two-way cartridge main valve is also closed; when the high-frequency pilot electromagnetic valve is electrified, the small-path two-way cartridge valve is communicated with the oil tank through the pilot electromagnetic valve, the small-path two-way cartridge valve is opened quickly, the control cavity of the two-way cartridge main valve is communicated with the oil tank through the inlet of the small-path two-way cartridge valve, the pressure of the control cavity of the two-way cartridge main valve is reduced rapidly, and then the two-way cartridge main valve is opened under the action of system pressure.
10. The method for using the two-stage pilot-controlled high-speed high-flow switch valve according to claim 9, wherein the pressure of the external pump source system is set to be higher than the inlet pressure of the two-way main valve cartridge by adjusting the external pump source, and the pressure of the external pump source system is set to be higher than the inlet pressure of the two-way main valve cartridge by adjusting an overflow valve of the external pump source.
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| CN202011223076.2A CN112343884A (en) | 2020-11-05 | 2020-11-05 | Two-stage pilot-controlled high-speed large-flow switch valve and method |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2557736Y (en) * | 2002-04-17 | 2003-06-25 | 机械工业部西安重型机械研究所 | Three-stage insert assembling valve |
| CN2632370Y (en) * | 2003-08-06 | 2004-08-11 | 机械工业部西安重型机械研究所 | Two-stage connecting high-pressure high-flow pressure-relief fluid discharge valves |
| CN201057182Y (en) * | 2007-06-06 | 2008-05-07 | 山东泰丰液压设备有限公司 | Integrated block type fast discharging bi-pass cartridge valve group |
| CN201225444Y (en) * | 2008-05-31 | 2009-04-22 | 山东泰丰液压设备有限公司 | Two-stage piloted main control type hydraulic two-way cartridge valve |
| CN201427169Y (en) * | 2009-07-10 | 2010-03-24 | 沈阳重型机械集团有限责任公司 | Proportional relief circuit of high-speed forging hydraulic press |
| DE102010035536A1 (en) * | 2010-08-26 | 2012-03-01 | Robert Bosch Gmbh | Electro-hydraulic control arrangement for anti-lock braking system of passenger car, has smart electrical control unit controlling electromagnets of fast switching two/two-way-pilot valves |
| CN205173101U (en) * | 2015-09-15 | 2016-04-20 | 成都兴宇精密铸造有限公司 | Forge quick release hydraulic system of hydraulic press |
| CN206917954U (en) * | 2017-06-28 | 2018-01-23 | 徐州一重锻压设备有限公司 | Quick pressure releasing protecting against shock hydraulic control unit |
| CN108443255A (en) * | 2018-04-23 | 2018-08-24 | 天津市天锻压力机有限公司 | The control cover board of ten thousand tons of free forging press main pump buffering off-loads |
| AU2019101580A4 (en) * | 2019-08-07 | 2020-01-23 | Xuzhou Institute Of Technology | Continuous impact supercharging system with two pumps for oil supply |
-
2020
- 2020-11-05 CN CN202011223076.2A patent/CN112343884A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2557736Y (en) * | 2002-04-17 | 2003-06-25 | 机械工业部西安重型机械研究所 | Three-stage insert assembling valve |
| CN2632370Y (en) * | 2003-08-06 | 2004-08-11 | 机械工业部西安重型机械研究所 | Two-stage connecting high-pressure high-flow pressure-relief fluid discharge valves |
| CN201057182Y (en) * | 2007-06-06 | 2008-05-07 | 山东泰丰液压设备有限公司 | Integrated block type fast discharging bi-pass cartridge valve group |
| CN201225444Y (en) * | 2008-05-31 | 2009-04-22 | 山东泰丰液压设备有限公司 | Two-stage piloted main control type hydraulic two-way cartridge valve |
| CN201427169Y (en) * | 2009-07-10 | 2010-03-24 | 沈阳重型机械集团有限责任公司 | Proportional relief circuit of high-speed forging hydraulic press |
| DE102010035536A1 (en) * | 2010-08-26 | 2012-03-01 | Robert Bosch Gmbh | Electro-hydraulic control arrangement for anti-lock braking system of passenger car, has smart electrical control unit controlling electromagnets of fast switching two/two-way-pilot valves |
| CN205173101U (en) * | 2015-09-15 | 2016-04-20 | 成都兴宇精密铸造有限公司 | Forge quick release hydraulic system of hydraulic press |
| CN206917954U (en) * | 2017-06-28 | 2018-01-23 | 徐州一重锻压设备有限公司 | Quick pressure releasing protecting against shock hydraulic control unit |
| CN108443255A (en) * | 2018-04-23 | 2018-08-24 | 天津市天锻压力机有限公司 | The control cover board of ten thousand tons of free forging press main pump buffering off-loads |
| AU2019101580A4 (en) * | 2019-08-07 | 2020-01-23 | Xuzhou Institute Of Technology | Continuous impact supercharging system with two pumps for oil supply |
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