CN117231578A - Integrated electrohydraulic reversing slide valve with overflow in large drift diameter - Google Patents
Integrated electrohydraulic reversing slide valve with overflow in large drift diameter Download PDFInfo
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- CN117231578A CN117231578A CN202311339989.4A CN202311339989A CN117231578A CN 117231578 A CN117231578 A CN 117231578A CN 202311339989 A CN202311339989 A CN 202311339989A CN 117231578 A CN117231578 A CN 117231578A
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- valve
- overflow
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- valve body
- valve core
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- 239000003921 oil Substances 0.000 claims abstract description 45
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 13
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000002633 protecting effect Effects 0.000 description 1
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- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses an integrated electro-hydraulic reversing slide valve with large drift diameter and overflow, which comprises a valve body, and is characterized in that a valve core is arranged in the valve body, an electromagnetic reversing valve and an overflow valve are arranged on the valve body, a valve core channel penetrating through the valve body is arranged in the valve body, the valve core is in sliding connection with the valve core channel, end covers are arranged at two ends of the valve core channel, a spring cavity is arranged in the end cover, a spring is arranged in the spring cavity, the end part of the valve core is connected onto the end cover through the spring, and an auxiliary oil duct is arranged on the end cover; the valve body is internally provided with a plurality of flow passages serving as hydraulic oil passages, the outer surface of the valve body is provided with flow passage openings, each flow passage opening at least comprises a pressure P opening, an oil return T opening, a working A opening and a working B opening, an oil inlet of the overflow valve is connected with the pressure P opening through the flow passages, and an oil return opening of the overflow valve is connected with the oil return T opening through the flow passages.
Description
Technical Field
The invention relates to the technical field of hydraulic valves, in particular to an integrated electro-hydraulic reversing slide valve with large drift diameter and overflow.
Background
The filling mining technology is widely applied in the mine filling field, the flow of a hydraulic system is larger and larger for large engineering machinery, a hydraulic slide valve is one of the most commonly used hydraulic elements in the hydraulic system, and particularly, the requirement of industrial equipment on the large-flow hydraulic system in recent years is met, so that the hydraulic slide valve with large drift diameter has wider application prospect.
The maximum diameter of the existing hydraulic slide valve is DN50, which can not meet the requirement of a high-flow hydraulic system (4200L/min); the hydraulic system is formed by connecting a plurality of valve blocks such as an electromagnetic reversing valve, a hydraulic reversing slide valve, an overflow valve and the like through hydraulic pipelines, and has the defects of scattered element structures, multiple assembly procedures, multiple pipelines, easiness in occurrence of hydraulic oil leakage and the like, thereby increasing the difficulty in installation and maintenance.
Therefore, how to provide a valve block integrating a reversing valve and an overflow valve, which meets the use requirement of a high-flow hydraulic system, is convenient to use and reliable in performance, and is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an integrated electro-hydraulic reversing slide valve with a large drift diameter and an overflow valve.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the integrated electro-hydraulic reversing slide valve with the overflow of the large drift diameter comprises a valve body (1), a valve core (2) is arranged in the valve body (1), an electromagnetic reversing valve (3) and an overflow valve (4) are arranged on the valve body (1), a valve core channel (5) penetrating through the valve body (1) is arranged in the valve body (1), the valve core (2) is in sliding connection with the valve core channel (5), end covers (6) are arranged at two ends of the valve core channel (5), a spring cavity (7) is arranged in the end covers (6), a spring (8) is arranged in the spring cavity (7), the end part of the valve core (2) is connected to the end covers (6) through the spring (8), and an auxiliary oil duct (9) is arranged on the end covers (6); the hydraulic oil way valve is characterized in that a plurality of runners serving as hydraulic oil ways are arranged in the valve body (1), a runner port is formed in the outer surface of the valve body (1), the runner port at least comprises a pressure P port (10), an oil return T port (11), a working A port (12) and a working B port (13), an oil inlet of the overflow valve (4) is connected with the pressure P port (10) through the runners, and an oil return port of the overflow valve (4) is connected with the oil return T port (11) through the runners.
Preferably, the overflow valve (4) is a plug-in two-way overflow valve.
Preferably, the electromagnetic directional valve (3) is a three-position four-way electromagnetic directional valve.
Preferably, the valve body (1) is connected with a flow dividing valve block (14), the connecting end of the flow dividing valve block (14) is provided with an oil port matched with the runner port, and the side surface of the flow dividing valve block (14) is provided with a plurality of flow dividing ports (15).
Preferably, two ends of the valve core channel (5) are provided with end stop blocks (16) for controlling the displacement stroke of the valve core (2), and the outer edges of the end stop blocks (16) are erected on the valve body (1).
Preferably, the end stop (16) is provided with an orifice (17).
Preferably, the valve core (2) is provided with a rectangular equalizing groove.
Preferably, a throttling notch (18) is arranged at the flow passage of the valve core (2).
Preferably, the throttle notch (18) is semi-circular or triangular.
The invention is further described below:
the invention relates to an integrated electrohydraulic reversing slide valve with overflow in a large-diameter area, which is designed as an electrohydraulic reversing valve with a three-position four-way median function as an O-shaped function, and comprises a rectangular valve body 1, wherein a valve core channel 5 is arranged in the valve body 1, and a valve core 2 slides in the valve core channel 5 to form the size and the position of a throttle opening, so that the size and the direction of flow passing through a valve port are controlled, the valve core 2 and the valve block 1 are in clearance seal, and the fit clearance is preferably 0.005mm, so that reasonable internal leakage is ensured, and good lubrication is ensured; the valve body 1 is internally provided with a runner serving as a hydraulic oil way for communicating all hydraulic elements, and pipelines of the hydraulic oil way are integrated in the valve body 1, so that oil leakage phenomenon is effectively reduced, working pressure is improved, the outer wall of the valve body 1 is provided with a runner port communicated with the runner, the runner port adopts a large drift diameter, preferably 80 and mm, and the use requirement of a large-flow hydraulic system (4200L/min) is met; the flow passage port at least comprises a pressure port P10, an oil return port T11, a working port A12 and a working port B13, the valve core channel 5 is provided with five annular grooves, three annular grooves are respectively communicated with the working port A12, the working port B13 and the pressure port P10, and the other two annular grooves are communicated with the oil return port T11 and are communicated with the flow passage in the valve body.
The electromagnetic directional valve 3 is preferably a three-position four-way quick response electromagnetic directional valve, an auxiliary oil duct 9 communicated with a spring cavity 7 is arranged on the end cover 6, the spring cavity 7 is connected with a control oil port of the electromagnetic directional valve 3 through the auxiliary oil duct 9 and a corresponding flow passage on the valve body 1, so that the electromagnetic directional valve 3 controls the flow direction of hydraulic oil, the hydraulic oil acts on one end of the valve core 2, and the valve core 2 is pushed to slide in the valve core channel 5, so that the valve core direction is changed; by arranging the oil inlet of the electromagnetic directional valve 3, the oil return opening of the electromagnetic directional valve 3 and the flow passage on the valve body 1, external pipelines are reduced, and the integration level of the valve block 1 is improved.
When the electromagnetic reversing valve 3 is in power failure, the valve core 2 is positioned by virtue of the valve body 1 under the action of the springs 8 at the two ends and is in the middle position, and at the moment, the pressure P port 10, the oil return T port 11, the working A port 12 and the working B port 12 of the reversing slide valve are not communicated; when the electromagnet on the left side of the electromagnetic reversing valve 3 is electrified, the valve core 2 is pushed to move leftwards, so that a pressure P port 10 of the reversing slide valve is communicated with a flow passage of a working A port 12 and a working B port 13 of the reversing slide valve and an oil return T port 11; conversely, when the electromagnet on the right side of the electromagnetic directional valve 3 is electrified, the pressure P port 10 is communicated with the working B port 13, the working A port 12 is communicated with the flow passage of the oil return T port 11.
The valve body 1 is connected with an inserted overflow valve 4 which has the limiting and protecting effects on hydraulic pressure, preferably a two-way overflow valve with DN63 diameter, the oil-passing capacity reaches 5000L/min, the oil inlet of the overflow valve 4 is communicated with a pressure P port 10 through a flow passage in the valve body 1, the oil return port of the overflow valve 4 is communicated with an oil return T port 11, thereby reducing externally connected hydraulic rubber pipes, when the working pressure in the flow passage is higher than the set value of the overflow valve 4, the overflow valve 4 is opened by oil pressure, unloading is carried out from the oil return port until the set value of the overflow valve 4 is set, and the overflow valve 4 is automatically closed, so that each part of elements of the valve are protected from being influenced by unstable system pressure.
The large-diameter flow dividing valve block 15 matched with the flow passage opening is arranged on the pressure P opening 10, the oil return T opening 11, the working A opening 12 and the working B opening 13 of the valve body 1, so that the function that the same oil source can supply flow to more than two executive components is realized, the executive components are overlapped through the flow dividing valve block 15, and the installation convenience of workers is improved; the redundant runner port formed on the surface of the valve body is closed by a plug.
The valve core 2 is made of 42CrMo, the maximum opening width of a flow passage between the valve core 2 and the valve body 1 reaches 50mm, the maximum flow rate can reach 4200L/min, the pressure loss is small when the large flow rate passes, the travel of the valve core 2 is controlled to be 50mm, and the response speed is high; the valve core 2 is symmetrically designed by adopting a full rectangular groove, so that the lubrication effect of the valve core 2 is improved, and the valve core has a stain resistance effect; the valve body 1 is integrally formed by integrally processing the spheroidal graphite cast iron and has the self-lubricating and wear-resisting functions; the QPQ treatment process is adopted for the valve body 1, so that the surface hardness and the aesthetic degree are improved; the valve core 2 is provided with a semicircular throttling notch 18, and when reversing, oil gradually throttles hydraulic oil through the throttling notch 18, so that hydraulic oil impact is reduced, and the overlarge reversing impact is avoided; an orifice 17, preferably having a bore diameter within 0.5-2mm, is provided in the middle of the spool end stop 14, so that the spool 2 is prevented from striking the end cap 6 during reversing, so that the spool 2 is in a stable state during movement.
Compared with the prior art, the invention has the beneficial effects that:
according to the integrated electrohydraulic reversing slide valve with overflow in the large-diameter area, the reversing valve and the overflow valve are arranged on the integral valve body, and the flow passages for communicating all pressure elements are arranged in the valve body, so that the possibility of oil leakage between the valves is effectively reduced, the use requirement of a large-flow hydraulic system is met, the valve body is compact in structure, low in cost, rapid to assemble and convenient to use and maintain; the large-diameter runner port is adopted to meet the requirement of a hydraulic system with ultra-large flow, so that the working reliability is high.
Drawings
FIG. 1 is an assembled schematic view of an integrated electro-hydraulic reversing slide valve with large-path area overflow of the present invention.
FIG. 2 is a schematic diagram of a valve body structure of an integrated electro-hydraulic reversing slide valve with overflow in a large-diameter area;
FIG. 3 is a schematic cross-sectional view of an integrated electro-hydraulic reversing spool valve of the present invention with large-path area overflow;
FIG. 4 is a schematic diagram of the spool configuration of the integrated electro-hydraulic reversing spool valve with large-path and overflow according to the present invention;
FIG. 5 is a schematic diagram of an end stop of the integrated electro-hydraulic reversing slide valve with large-path and overflow according to the present invention;
fig. 6 is a schematic diagram of the working principle of the integrated electro-hydraulic reversing slide valve with overflow in a large drift diameter.
In the figure: 1. a valve body; 2. a valve core; 3. an electromagnetic reversing valve; 4. an overflow valve; 5. a spool passage; 6. an end cap; 7. a spring cavity; 8. a spring; 9. an auxiliary oil passage; 10. a pressure port P; 11. an oil return port T; 12. a work A port; 13 working port B; 14 a diverter valve block; 15, a shunt port; 16. an end stop; 17. an orifice; 18. a rectangular equalizing groove; 19. a throttle notch.
Description of the embodiments
The invention is further described below with reference to the drawings and examples.
Referring to fig. 1 to 6, the integrated electrohydraulic reversing slide valve with overflow in a large-diameter area comprises a valve body 1, wherein a valve core 2 is arranged in the valve body 1, an electromagnetic reversing valve 3 and an overflow valve 4 are arranged on the valve body 1, a valve core channel 5 penetrating through the valve body 1 is arranged in the valve body 1, the valve core 2 is in sliding connection with the valve core channel 5, end covers 6 are arranged at two ends of the valve core channel 5, a spring cavity 7 is arranged in the end covers 6, a spring 8 is arranged in the spring cavity 7, the end part of the valve core 2 is connected to the end covers 6 through the spring 8, and an auxiliary oil duct 9 is arranged on the end covers 6; the valve body 1 is internally provided with a plurality of flow passages serving as hydraulic oil ways, and flow passage openings are formed in the outer surface of the valve body 1, each flow passage opening at least comprises a pressure P opening 10, an oil return T opening 11, a work A opening 12 and a work B opening 13, an oil inlet of the overflow valve 4 is connected with the pressure P opening 10 through the flow passages, and an oil return opening of the overflow valve 4 is connected with the oil return T opening 11 through the flow passages.
Wherein the overflow valve 4 is a plug-in two-way overflow valve; the electromagnetic reversing valve 3 is a three-position four-way electromagnetic reversing valve; the valve body 1 is connected with a flow dividing valve block 14, an oil port matched with the path of the runner port is arranged at the connecting end of the flow dividing valve block 14, and a plurality of flow dividing ports 15 are arranged on the side face of the flow dividing valve block; end stop blocks 16 for controlling the displacement stroke of the valve core 2 are arranged at two ends of the valve core channel 5, and the outer edges of the end stop blocks 16 are arranged on the valve body 1 in a building manner; the end stop block 16 is provided with an orifice 17, and the valve core 2 and the valve core channel 5 are in clearance fit; rectangular equalizing grooves are formed in the valve core 2; the flow passage of the valve core 2 is provided with a throttling notch 18, and the throttling notch 18 is semicircular or triangular.
Claims (9)
1. The integrated electro-hydraulic reversing slide valve with the overflow of the large drift diameter comprises a valve body (1), and is characterized in that a valve core (2) arranged in the valve body (1), an electromagnetic reversing valve (3) and an overflow valve (4) are arranged on the valve body (1), a valve core channel (5) penetrating through the valve body (1) is arranged in the valve body (1), the valve core (2) is slidably connected with the valve core channel (5), end covers (6) are arranged at two ends of the valve core channel (5), a spring cavity (7) is arranged in the end cover (6), a spring (8) is arranged in the spring cavity (7), the end part of the valve core (2) is connected to the end cover (6) through the spring (8), and an auxiliary oil duct (9) is arranged on the end cover (6); the hydraulic oil way valve is characterized in that a plurality of runners serving as hydraulic oil ways are arranged in the valve body (1), a runner port is formed in the outer surface of the valve body (1), the runner port at least comprises a pressure P port (10), an oil return T port (11), a working A port (12) and a working B port (13), an oil inlet of the overflow valve (4) is connected with the pressure P port (10) through the runners, and an oil return port of the overflow valve (4) is connected with the oil return T port (11) through the runners.
2. The integrated electro-hydraulic reversing spool valve with large-path area overflow according to claim 1, characterized in that the overflow valve (4) is a cartridge two-way overflow valve.
3. The integrated electro-hydraulic reversing slide valve with overflow of the large-diameter belt according to claim 1, characterized in that the electromagnetic reversing valve (3) is a three-position four-way electromagnetic reversing valve.
4. The integrated electrohydraulic reversing slide valve with overflow of the large diameter area of claim 1, characterized in that, a diverter valve block (14) is connected on the valve body (1), the connecting end of the diverter valve block (14) is provided with an oil port adapting to the runner port, and the side surface of the diverter valve block (14) is provided with a plurality of diverter ports (15).
5. The integrated electro-hydraulic reversing slide valve with overflow of the large-diameter belt according to claim 1, characterized in that two ends of the valve core channel (5) are provided with end stop blocks (16) for controlling the displacement stroke of the valve core (2), and the outer edges of the end stop blocks (16) are erected on the valve body (1).
6. The integrated electro-hydraulic reversing spool valve with large-path area overflow according to claim 6, characterized in that the end stop (16) is provided with an orifice (17).
7. The integrated electro-hydraulic reversing slide valve with overflow of the large-diameter belt according to claim 1, wherein a rectangular equalizing groove is formed on the valve core (2).
8. The integrated electrohydraulic reversing spool valve with overflow of any of claims 1 to 7, characterized in that a throttle notch (18) is provided at the flow channel of the spool (2).
9. The integrated electro-hydraulic reversing spool valve with large-path area overflow according to claim 8, characterized in that the throttle notch (18) is semi-circular or triangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311339989.4A CN117231578A (en) | 2023-10-17 | 2023-10-17 | Integrated electrohydraulic reversing slide valve with overflow in large drift diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311339989.4A CN117231578A (en) | 2023-10-17 | 2023-10-17 | Integrated electrohydraulic reversing slide valve with overflow in large drift diameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117231578A true CN117231578A (en) | 2023-12-15 |
Family
ID=89086044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311339989.4A Pending CN117231578A (en) | 2023-10-17 | 2023-10-17 | Integrated electrohydraulic reversing slide valve with overflow in large drift diameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117231578A (en) |
-
2023
- 2023-10-17 CN CN202311339989.4A patent/CN117231578A/en active Pending
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