CN113153849B - Hydraulic servo valve - Google Patents
Hydraulic servo valve Download PDFInfo
- Publication number
- CN113153849B CN113153849B CN202110100768.6A CN202110100768A CN113153849B CN 113153849 B CN113153849 B CN 113153849B CN 202110100768 A CN202110100768 A CN 202110100768A CN 113153849 B CN113153849 B CN 113153849B
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- China
- Prior art keywords
- oil
- fixedly connected
- side wall
- valve body
- plate
- Prior art date
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Links
- 238000001914 filtration Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims 1
- 238000010079 rubber tapping Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 abstract description 87
- 239000010720 hydraulic oil Substances 0.000 abstract description 35
- 230000000903 blocking effect Effects 0.000 abstract description 9
- 238000004891 communication Methods 0.000 description 7
- 239000012535 impurity Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/03—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/70—Regenerating the filter material in the filter by forces created by movement of the filter element
- B01D29/72—Regenerating the filter material in the filter by forces created by movement of the filter element involving vibrations
-
- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/005—Leakage; Spillage; Hose burst
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/615—Filtering means
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/86—Control during or prevention of abnormal conditions
- F15B2211/863—Control during or prevention of abnormal conditions the abnormal condition being a hydraulic or pneumatic failure
- F15B2211/8636—Circuit failure, e.g. valve or hose failure
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Servomotors (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a hydraulic servo valve, which comprises a valve body, wherein the top of the valve body is fixedly connected with a shell, the inner side wall of the valve body is provided with an oil inlet cavity, the two ends of the oil inlet cavity are provided with connecting pipes, the inner side wall of the valve body is provided with an oil control cavity, the two ends of the oil inlet cavity are communicated with the connecting pipes, the bottom of the oil control cavity is fixedly connected with an oil inlet pipe, the oil inlet pipe is communicated with the oil inlet cavity, through the arrangement of a stress piece, hydraulic oil pushes up an oil blocking plate, and simultaneously, under the flowing action of hydraulic oil, the stress piece is enabled to rotate, so that the oil blocking plate rotates to block and rotationally split the entering hydraulic oil, the flow rate of the hydraulic oil entering is reduced, the flow rate is too fast when the hydraulic oil enters the valve body is prevented, the condition that the hydraulic oil enters at a high flow rate is lightened, the inside of equipment is subjected to too high pressure impact, the internal pipeline is avoided, and stable use of the equipment is ensured.
Description
Technical Field
The invention relates to the technical field of servo valves, in particular to a hydraulic servo valve.
Background
The hydraulic servo valve is divided into a hydraulic servo valve and an electrohydraulic servo valve, the hydraulic servo valve is a hydraulic conversion element which converts small-power mechanical action into hydraulic output quantity (flow or pressure), the hydraulic servo valve is of a slide valve structure, the hydraulic servo valve is applied to a steering engine of a ship, a profiling device of a machine tool and a booster of an airplane earliest, the electrohydraulic servo valve is an electrohydraulic conversion element which converts electric quantity into the hydraulic output quantity,
through searching, the patent number CN202001410U discloses a resetting mechanism of a hydraulic servo valve, which at least comprises a power level slide valve control cavity and a power level slide valve core of the servo valve, and is characterized in that a compression spring is arranged in the power level slide valve control cavity, one end of the compression spring is in butt joint with the end side surface of the power level slide valve core, the other end of the compression spring is in butt joint with the end surface of the power level slide valve control cavity, the resetting mechanism can lead a piston rod of a servo cylinder to be in a predicted and safe working position when a feedback rod in the servo valve breaks, a nozzle of the servo valve is blocked due to pollution or an oil supply hydraulic source of the servo valve suddenly drops, the servo valve loses pilot pressure and other faults,
however, in the hydraulic servo system, most of the faults of the servo valve are caused by oil pollution, and a small part of the faults are caused by pressure impact, electrical system short circuit and other reasons, so that the problems of fault analysis and elimination of the servo valve are solved, namely, how to control the cleanliness of hydraulic oil entering, reduce the impact of the hydraulic system, prevent the electrical system short circuit and the like.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a hydraulic servo valve.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the hydraulic servo valve comprises a valve body, wherein a shell is fixedly connected to the top of the valve body, an oil inlet cavity is formed in the inner side wall of the valve body, connecting pipes are formed in the two ends of the oil inlet cavity, an oil control cavity is formed in the inner side wall of the valve body, the two ends of the oil control cavity are communicated with the connecting pipes, an oil inlet pipe is fixedly connected to the bottom of the oil control cavity, the oil inlet pipe is communicated with the oil inlet cavity, the bottom end of the oil inlet pipe extends to the bottom of the valve body, a first connecting pipe is fixedly connected to the bottom of the oil control cavity, the bottom end of the oil outlet pipe extends to the bottom of the valve body, a second connecting pipe is fixedly connected to the bottom of the oil control cavity, the bottom end of the second connecting pipe extends to the bottom of the valve body, the top of the oil inlet cavity is provided with a communication port, the top of the communication port is communicated with the oil control cavity, a valve core is slidably connected on the inner side wall of the oil control cavity, a connecting pipe is provided at the top of the oil control cavity, the other end of the connecting pipe is communicated with the inner side wall of the connecting pipe, a magnet is fixedly connected on the inner side wall of the shell, the bottom of the shell is slidably connected with a sliding plate, the top of the sliding plate is provided with an armature, the bottom of the sliding plate is fixedly connected with a baffle, the inner side wall of the oil inlet cavity is fixedly connected with a fixed plate, the right side wall of the fixed plate is rotatably connected with a rotating ring, a rotating rod is slidably arranged on the inner side wall of the fixed plate, an oil blocking plate is fixedly connected on the left side of the rotating rod, a stress plate is fixedly connected on the inner side wall of the oil blocking plate, a filtering and dust removing mechanism is arranged on the left side of the oil blocking plate, the outer side wall of the rotating ring is fixedly connected with an elastic mechanism.
Preferably, the filtering ash removing mechanism comprises a knocking rod fixedly connected to the left side wall of the oil resistance plate, a filtering plate is fixedly connected to the inner side wall of the connecting pipe, the end part of the knocking rod penetrates through the filtering plate, and a knocking block is fixedly connected to the end part of the knocking rod.
Preferably, the elastic mechanism comprises a spring tube fixedly connected to the right side wall of the rotating ring, a sliding connecting block is slidably connected to the inner side wall of the spring tube, a spring is fixedly connected to the right side of the connecting block, and the right side of the spring is fixedly connected with the inner side wall of the spring tube.
Preferably, a sealing structure is formed between the outer side wall of the valve core and the inner side wall of the oil control cavity.
Preferably, a sealing structure is formed between the outer side wall of the sliding plate and the inner wall of the housing.
Preferably, the stress sheet is arc-shaped.
Preferably, the spring is made of stainless steel material, and the spring is an elastic spring.
Preferably, the end of the knocking block is arranged in a round shape.
Compared with the prior art, the invention has the beneficial effects that:
1. through the setting of atress piece, at the in-process of oil feed, hydraulic oil will block the oil board and jack-up, simultaneously under the flow action of hydraulic oil, will make the atress piece rotate, and then make the oil board rotate, block the work with rotatory reposition of redundant personnel to the hydraulic oil of entering, reduce the velocity of flow that hydraulic oil got into, velocity of flow is too fast when preventing that hydraulic oil from getting into the valve body inside, alleviate hydraulic oil under the circumstances that high velocity of flow got into, cause too high pressure to the equipment inside to strike, avoid inner tube to appear bursting, ensure equipment steady usage.
2. Through the cooperation use of oil resistance board, elastic mechanism, when hydraulic oil gets into, jack-up the oil resistance board, strike the pole and will remove left side along with the oil resistance board, when equipment stop uses, do not have oily when getting into, the oil resistance board will reply fast under the elasticity effect of spring, and then make to strike the pole and take to strike the piece and reply, strike on the filter, will adhere to impurity on the filter and hit down, prevent long-term use and store excessive impurity with the filter on, avoided inside because pressure is too big, lead to the condition that internal pipe takes place to burst, ensure that equipment oil feed is steady.
Drawings
FIG. 1 is a schematic diagram of a hydraulic servo valve according to the present invention;
fig. 2 is a schematic structural diagram of a hydraulic servo valve a according to the present invention;
fig. 3 is a schematic structural diagram of a hydraulic servo valve B according to the present invention;
FIG. 4 is a schematic view of a hydraulic servo valve according to the present invention;
fig. 5 is a partially developed view of a hydraulic servo valve according to the present invention.
In the figure: the valve comprises a valve body 1, a housing 2, an oil inlet pipe 3, an oil inlet cavity 4, a connecting pipe 5, an oil control cavity 6, a valve core 7, a first connecting pipe 8, an oil outlet pipe 9, a second connecting pipe 10, a communication port 11, a magnet 12, an armature 13, a sliding plate 14, a fixed plate 15, a rotating ring 16, a rotating rod 17, an oil blocking plate 18, a stress piece 19, a spring pipe 20, a spring 21, a knocking rod 22, a knocking block 23, a filter plate 24 and a connecting pipe 25.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1-5, a hydraulic servo valve comprises a valve body 1, a shell 2 is fixedly connected to the top of the valve body 1, an oil inlet cavity 4 is formed in the inner side wall of the valve body 1, connecting pipes 5 are formed in the two ends of the oil inlet cavity 4, an oil control cavity 6 is formed in the inner side wall of the valve body 1, two ends of the oil control cavity 6 are communicated with the connecting pipes 5, an oil inlet pipe 3 is fixedly connected to the bottom of the oil control cavity 6, the oil inlet pipe 3 is communicated with the oil inlet cavity 4, the bottom end of the oil inlet pipe 3 extends to the bottom of the valve body 1, a first connecting pipe 8 is fixedly connected to the bottom of the first connecting pipe 8, an oil outlet pipe 9 is fixedly connected to the bottom of the oil control cavity 6, the bottom end of the oil outlet pipe 9 extends to the bottom of the valve body 1, a second connecting pipe 10 is fixedly connected to the bottom of the oil control cavity 6, a communication port 11 is formed in the top of the oil inlet cavity 4, the top of the communication port 11 is communicated with the oil control cavity 6, a valve core 7 is slidingly connected to the inner side wall of the oil control cavity 6, a valve core 14 is slidingly connected to the inner side wall of the valve 6, an inner side wall of the valve core 7 is in sliding connection plate 14 is formed with the inner side wall of the shell 2, an inner side wall of the valve body 2 is fixedly connected to the inner side wall of the valve body 2 is in sliding plate 2, and the sliding plate is in sliding connection with the inner side wall 2 is in the sliding plate 2 is in sliding connection with the sliding plate 2, and the inner side wall of the sliding plate is in the sliding plate 2 is in sliding connection with the sliding plate 2 is in the sliding connection with the bottom side wall 2, and the bottom side wall is in the valve 2 is in sliding plate 2 is in sliding connection with the valve 2 is in sliding door 2;
by controlling the deflection of the armature 13 inside the magnetic field 12, the sliding plate 14 moves, the baffle plate is driven to move, the baffle plate 14 moves leftwards, when the orifice of the left connecting pipe 5 is blocked, pressure difference is generated at two ends of the valve core 7, the valve core moves rightwards under the action of pressure, at the moment, hydraulic oil flows out of the first connecting pipe 8, the second connecting pipe 10 is communicated with the oil outlet 9, when the deflection of the armature 13 inside the magnetic field 12 is controlled, the baffle plate 14 moves rightwards, when the orifice of the right connecting pipe 5 is blocked, the pressure difference generated at two ends of the valve core 7 can lead the valve core 7 to move leftwards, at the moment, hydraulic oil enters into the second connecting port 10, the first connecting pipe 8 is communicated with the oil outlet 9, and the valve core 7 moves leftwards and rightwards under the condition that the armature 13 is deflected, so that the output of hydraulic oil is controlled.
The oil inlet cavity 4 is fixedly connected with a fixed plate 15 on the inner side wall, a rotary ring 16 is rotationally connected to the right side wall of the fixed plate 15, rotary rods 17 are symmetrically arranged on the inner side wall of the fixed plate 15, the number of the rotary rods 17 is two, the left side of the rotary rods 17 is fixedly connected with an oil resistance plate 18, the inner side wall of the oil resistance plate 18 is fixedly connected with a stress piece 19, the stress piece 19 is arc-shaped, the left side of the oil resistance plate 18 is provided with a filtering ash removing mechanism, the filtering ash removing mechanism comprises a knocking rod 22 fixedly connected to the left side wall of the oil resistance plate 18, the inner side wall of a connecting pipe 5 is fixedly connected with a filter plate 24, the end part of the knocking rod 22 penetrates through the filter plate 24, the end part of the knocking rod 22 is fixedly connected with a knocking block 23, the end part of the knocking block 23 is circularly arranged on the outer side wall of the rotary ring 16, the elastic mechanism comprises a spring pipe 20 fixedly connected to the right side wall of the rotary ring 16, the inner side wall of the spring pipe 20 is slidingly connected with a sliding connection piece 19, the right side of the spring 21 is fixedly connected with a spring 21, the spring 21 is made of stainless steel material, the spring 21 is a spring 21 is made of a stainless steel material, the spring 21 is a spring 21, and the spring 21 is a longer in service life, and the spring 21 is more firmly connected with the inner side wall and has a longer service life;
through the arrangement of the stress plate 19, in the oil inlet process, the hydraulic oil pushes the oil resistance plate 18 open, meanwhile, under the flowing action of the hydraulic oil, the stress plate 19 can be made to rotate, so that the oil resistance plate 18 can be made to rotate, the work of blocking and rotating and shunting the entering hydraulic oil is carried out, the flow rate of the entering hydraulic oil is reduced, the flow rate of the hydraulic oil is prevented from being too fast when the hydraulic oil enters the valve body 1, the condition that the hydraulic oil enters at a high flow rate is lightened, the too high pressure impact is caused to the inside of the equipment, the burst of an internal pipeline is avoided, and the stable use of the equipment is ensured;
meanwhile, through the cooperation of the oil resistance plate 18 and the elastic mechanism, when hydraulic oil enters, the oil resistance plate 18 is jacked up, the knocking rod 22 moves leftwards along with the oil resistance plate 18, when the equipment stops using, oil does not enter, the oil resistance plate 18 can be quickly restored under the elastic force of the spring 21, and then the knocking rod 22 is enabled to restore with the knocking block 23, is knocked on the filter plate 24, and impurities attached to the filter plate 24 are knocked down, so that excessive impurities accumulated on the filter plate 24 during long-term use are prevented, the situation that an inner pipeline bursts due to overlarge pressure is avoided, and the equipment oil inlet is ensured to be stable.
In the invention, when the hydraulic oil enters the connecting pipe 5, the oil inlet pipe 3 firstly introduces hydraulic oil, the hydraulic oil presses the oil baffle 18 to the left side, the hydraulic oil pushes the oil baffle 18 open, meanwhile, under the flowing action of the hydraulic oil, the stress piece 19 rotates, the oil baffle 18 rotates, the blocking and rotating diversion work is carried out on the introduced hydraulic oil, the flow rate of the hydraulic oil is reduced, the knocking rod 22 moves leftwards along with the oil baffle 18, the sliding plate 14 moves by controlling the deflection of the armature 13 in the magnetic field 12, the baffle plate 14 is driven to move, the baffle plate 14 moves leftwards, when the pipe orifice of the left connecting pipe 5 is blocked, the two ends of the valve core 7 generate pressure difference, the valve core moves rightwards under the action of the pressure, at this time, hydraulic oil will flow out from the first connecting pipe 8, the second connecting pipe 10 will be in communication with the oil outlet 9, when the deflection of the armature 13 in the magnetic field 12 is controlled to move the baffle 14 to the right, when the pipe orifice of the right connecting pipe 5 is blocked, the pressure difference generated at the two ends of the valve core 7 will cause the valve core to move to the left, at this time, hydraulic oil will enter into the second connecting pipe 10, the first connecting pipe 8 will be in communication with the oil outlet 9, after the use is completed, when the hydraulic oil is stopped, the oil blocking plate 18 will be quickly restored under the action of the elasticity of the spring 21, so that the knocking rod 22 is restored with the knocking block 23, knocked on the filter plate 24, and impurities attached to the filter plate 24 are knocked down.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (8)
1. The utility model provides a hydraulic servo valve, includes valve body (1), its characterized in that, top fixedly connected with casing (2) of valve body (1), offer oil inlet chamber (4) on the inside wall of valve body (1), connecting pipe (5) have been seted up at the both ends of oil inlet chamber (4), oil control chamber (6) have been seted up on the inside wall of valve body (1), be linked together between the both ends of oil control chamber (6) and connecting pipe (5), the bottom fixedly connected with oil inlet tube (3) of oil control chamber (6), be linked together between oil inlet tube (3) and oil inlet chamber (4), the bottom of oil inlet tube (3) extends to the bottom of valve body (1), the bottom fixedly connected with first connecting pipe (8) of oil control chamber (6), the bottom of oil control chamber (6) is fixedly connected with oil outlet pipe (9), the bottom of oil control chamber (9) extends to the bottom of valve body (1), the bottom fixedly connected with oil inlet port (10) of oil control chamber (6), the bottom of second connecting pipe (10) extends to the bottom of valve body (1), the bottom of oil control chamber (6) is linked together with top (11), the utility model discloses a filter ash removal mechanism, including oil control chamber (6), valve core (7) is slidingly connected with on the inside wall of oil control chamber (6), connect pipe (25) have been seted up at the top of oil control chamber (6), be linked together between the other end of connecting pipe (5) and the inside wall of connect pipe (25), fixedly connected with magnet (12) on the inside wall of casing (2), fixedly connected with sliding plate (14) in casing (2) bottom, the top of sliding plate (14) is provided with armature (13), the bottom fixedly connected with baffle of sliding plate (14), fixedly connected with fixed plate (15) on the inside wall of oil feed chamber (4), rotate on the right side wall of fixed plate (15) and be connected with swivel becket (16), slide on the inside wall of fixed plate (15) have dwang (17), fixedly connected with oil resistance plate (18) in the left side of dwang (17), fixedly connected with stressed piece (19) on the inside wall of oil resistance plate (18), filtration ash removal mechanism has been seted up in the left side of oil resistance plate (18), outer elastic force mechanism fixedly connected with on the inside wall of swivel becket (16).
2. The hydraulic servo valve according to claim 1, wherein the filtering and ash-cleaning mechanism comprises a knocking rod (22) fixedly connected to the left side wall of the oil resistance plate (18), a filter plate (24) is fixedly connected to the inner side wall of the connecting pipe (5), the end part of the knocking rod (22) penetrates through the filter plate (24), and a knocking block (23) is fixedly connected to the end part of the knocking rod (22).
3. The hydraulic servo valve according to claim 1, wherein the elastic mechanism comprises a spring tube (20) fixedly connected to the right side wall of the rotary ring (16), a sliding connection block is slidably connected to the inner side wall of the spring tube (20), a spring (21) is fixedly connected to the right side of the connection block, and the right side of the spring (21) is fixedly connected to the inner side wall of the spring tube (20).
4. A hydraulic servo valve according to claim 1, wherein a sealing structure is formed between the outer side wall of the spool (7) and the inner side wall of the oil control chamber (6).
5. A hydraulic servo valve according to claim 1, wherein a sealing structure is formed between the outer side wall of the slide plate (14) and the inner wall of the housing (2).
6. A hydraulic servo valve according to claim 1, wherein the force-bearing plate (19) is of the arc type.
7. A hydraulic servo valve according to claim 3, wherein the spring (21) is made of stainless steel material, and the spring (21) is a resilient spring.
8. A hydraulic servo valve according to claim 2, wherein the end of the tapping block (23) is circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110100768.6A CN113153849B (en) | 2021-04-25 | 2021-04-25 | Hydraulic servo valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110100768.6A CN113153849B (en) | 2021-04-25 | 2021-04-25 | Hydraulic servo valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113153849A CN113153849A (en) | 2021-07-23 |
| CN113153849B true CN113153849B (en) | 2023-09-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110100768.6A Active CN113153849B (en) | 2021-04-25 | 2021-04-25 | Hydraulic servo valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113153849B (en) |
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| CN204436910U (en) * | 2014-12-09 | 2015-07-01 | 上海朝田实业有限公司 | A kind of asymmetric hydraulic efficiency servo-valve |
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