CN113153849A - Hydraulic servo valve - Google Patents
Hydraulic servo valve Download PDFInfo
- Publication number
- CN113153849A CN113153849A CN202110100768.6A CN202110100768A CN113153849A CN 113153849 A CN113153849 A CN 113153849A CN 202110100768 A CN202110100768 A CN 202110100768A CN 113153849 A CN113153849 A CN 113153849A
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- Prior art keywords
- oil
- fixedly connected
- side wall
- valve body
- oil inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000007789 sealing Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 90
- 239000010720 hydraulic oil Substances 0.000 abstract description 33
- 230000000903 blocking effect Effects 0.000 abstract description 12
- 230000009172 bursting Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 208000004350 Strabismus Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
Images
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
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- 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
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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
- 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, 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, 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 sheet, in the oil inlet process, hydraulic oil pushes an oil blocking plate open, simultaneously, under the flowing action of the hydraulic oil, the stress sheet can rotate, so that the oil blocking plate rotates, the work of blocking and rotationally shunting the entering hydraulic oil is carried out, the entering flow rate of the hydraulic oil is reduced, the flow rate is prevented from being too high when the hydraulic oil enters the valve body, and the situation that the hydraulic oil enters at a high flow rate is reduced, cause too high pressure impact to equipment inside, avoid the internal pipe to appear bursting, ensure that equipment uses steadily.
Description
Technical Field
The invention relates to the technical field of servo valves, in particular to a hydraulic servo valve.
Background
The hydraulic servo valves are divided into an electro-hydraulic servo valve and an electro-hydraulic servo valve, the electro-hydraulic servo valve is an electro-hydraulic conversion element which converts low-power mechanical action into hydraulic output (flow or pressure), the electro-hydraulic servo valve is mostly of a slide valve type structure, the electro-hydraulic servo valve is the electro-hydraulic conversion element which converts electric quantity into hydraulic output when being applied to steering engines of ships, copying devices of machine tools and boosters of airplanes at the earliest,
through search, patent No. CN202001410U discloses a reset mechanism of a hydraulic servo valve, which at least includes a power stage spool valve control cavity and a power stage spool valve core of the servo valve, and is characterized in that a compression spring is installed in the power stage spool valve control cavity, one end of the compression spring is butted with an end surface of the power stage spool valve core, and the other end is butted with an end surface in the power stage spool valve control cavity, the reset mechanism can make a piston rod of a servo cylinder break when a feedback rod in the servo valve is broken, a nozzle of the servo valve is blocked due to pollution, or an oil supply hydraulic source of the servo valve suddenly drops pressure, the servo valve is in a pre-known and safe working position when the servo valve loses faults such as pilot pressure,
however, in a hydraulic servo system, most faults of a servo valve are caused by oil pollution, and a small part of faults are caused by pressure impact, short circuit of an electrical system and the like, so that the problems of fault analysis and elimination of the servo valve are solved, in fact, how to control the cleanliness of hydraulic oil entering, reduce the impact of the hydraulic system, prevent the short circuit of the electrical system 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 purpose, the invention adopts the following technical scheme:
a hydraulic servo valve comprises a valve body, wherein the top of the valve body is fixedly connected with a shell, an oil inlet cavity is formed in the inner side wall of the valve body, connecting pipes are formed in two ends of the oil inlet cavity, an oil control cavity is formed in the inner side wall of the valve body, 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 first connecting pipe extends to the bottom of the valve body, an oil outlet 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, a communicating port is formed in the top of the oil inlet cavity, the top of the communicating port is communicated with the oil control cavity, the inner side wall of the oil control cavity is connected with a valve core in a sliding way, the top of the oil control cavity is provided with a communicating pipe, the other end of the connecting pipe is communicated with the inner side wall of the communicating pipe, the inner side wall of the shell is fixedly connected with a magnet, the bottom of the shell is connected with a sliding plate in a sliding way, the top of the sliding plate is provided with an armature, the bottom of the sliding plate is fixedly connected with a baffle plate, 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, the inner side wall of the fixed plate is provided with a rotating rod in a sliding manner, the left side of the rotating rod is fixedly connected with an oil baffle plate, the inner side wall of the oil baffle plate is fixedly connected with a stress sheet, the left side of the oil baffle plate is provided with a filtering and ash removing mechanism, and the outer side wall of the rotating ring is fixedly connected with an elastic mechanism.
Preferably, the filtering and ash removing mechanism comprises a knocking rod fixedly connected to the left side wall of the oil baffle, a filter plate is fixedly connected to the inner side wall of the connecting pipe, the end part of the knocking rod penetrates through the filter plate, and a knocking block is fixedly connected to the end part of the knocking rod.
Preferably, the elastic mechanism comprises a spring pipe fixedly connected to the right side wall of the rotating ring, a sliding connection block is connected to the inner side wall of the spring pipe in a sliding mode, a spring is fixedly connected to the right side of the connection block, and the right side of the spring is fixedly connected with the inner side wall of the spring pipe.
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, the outer side wall of the sliding plate and the inner wall of the housing form a sealing structure therebetween.
Preferably, the stress piece 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 in a circular arrangement.
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 open, simultaneously under the flow effect of hydraulic oil, will make the atress piece rotate, and then make the oil board rotate, the work of blocking and rotatory reposition of redundant personnel is carried out to the hydraulic oil that gets into, reduce the velocity of flow that hydraulic oil got into, the velocity of flow is too fast when preventing that hydraulic oil from getting into the valve body inside, alleviate hydraulic oil under the condition that the high velocity of flow got into, cause too high pressure impact to equipment inside, avoid the inside pipeline to appear bursting, ensure that equipment uses steadily.
2. Through the oil baffle, the cooperation of elasticity mechanism is used, when hydraulic oil enters, the oil baffle backs down, it will remove to the left side along with the oil baffle to strike the pole, when equipment stop using, when oil-free entering, the oil baffle will reply under the spring's elasticity effect fast, and then make to strike the pole and take the piece of striking to reply, strike on the filter, will be attached to the impurity on the filter and hit down, prevent to use for a long time and accumulate too much impurity on with the filter, avoided inside because pressure is too big, lead to the inside pipeline to take place the condition of bursting, ensure that equipment oil feed is steady.
Drawings
FIG. 1 is a schematic structural 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 diagram of a portion 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 oil control valve comprises a valve body 1, a shell 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 sheet 19, a spring pipe 20, a spring 21, a knocking rod 22, a knocking block 23, a filter plate 24 and a communicating pipe 25.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, a hydraulic servo valve includes a valve body 1, a housing 2 fixedly connected to the top of the valve body 1, an oil inlet chamber 4 formed on the inner sidewall of the valve body 1, a connecting pipe 5 formed at both ends of the oil inlet chamber 4, an oil control chamber 6 formed on the inner sidewall of the valve body 1, both ends of the oil control chamber 6 communicated with the connecting pipe 5, an oil inlet pipe 3 fixedly connected to the bottom of the oil control chamber 6, the oil inlet pipe 3 communicated with the oil inlet chamber 4, the bottom end of the oil inlet pipe 3 extending to the bottom of the valve body 1, a first connecting pipe 8 fixedly connected to the bottom of the oil control chamber 6, the bottom end of the first connecting pipe 8 extending to the bottom of the valve body 1, an oil outlet pipe 9 fixedly connected to the bottom of the oil control chamber 6, the bottom end of the second connecting pipe 10 extending to the bottom of the valve body 1, the top of the oil inlet cavity 4 is provided with a communication port 11, the top of the communication port 11 is communicated with the oil control cavity 6, the inner side wall of the oil control cavity 6 is connected with a valve core 7 in a sliding manner, a sealing structure is formed between the outer side wall of the valve core 7 and the inner side wall of the oil control cavity 6, the top of the oil control cavity 6 is provided with a communicating pipe 25, the other end of the connecting pipe 5 is communicated with the inner side wall of the communicating pipe 25, the inner side wall of the shell 2 is fixedly connected with a magnet 12, the bottom of the shell 2 is connected with a sliding plate 14 in a sliding manner, a sealing structure is formed between the outer side wall of the sliding plate 14 and the inner wall of the shell 2, the top of the sliding plate 14 is provided with an armature 13, and the bottom of the sliding plate 14 is fixedly connected with a baffle plate;
through the deflection of the armature 13 in the control magnetic field 12, make the sliding plate 14 move, and then drive the baffle to move, the baffle 14 moves to the left side, when blocking the pipe orifice of the left side connecting pipe 5, valve core 7 both ends will produce the pressure difference, this will make the valve core move to the right side under the effect of pressure, at this moment, hydraulic oil will flow out from the first connecting pipe 8, the second connecting pipe 10 will be to the intercommunication with the oil-out 9, when the deflection of the armature 13 in the control magnetic field 12, make the baffle 14 move to the right side, when blocking the pipe orifice of the right side connecting pipe 5, the pressure difference that produces at the valve core 7 both ends will make the valve core 7 move to the left side, hydraulic oil will get into in the second connector 10 at this moment, the first connecting pipe 8 will be linked together with the oil-out 9, make the valve core 7 move about under the condition that the armature 13 squints, thereby control the output of hydraulic oil.
The oil inlet cavity 4 is fixedly connected with a fixed plate 15 on the inner side wall, a rotating ring 16 is rotatably connected on the right side wall of the fixed plate 15, rotating rods 17 are arranged on the inner side wall of the fixed plate 15 in a sliding manner, the rotating rods 17 are symmetrically arranged, the number of the rotating rods 17 is two, the left side of the rotating rods 17 is fixedly connected with an oil baffle plate 18, a stress sheet 19 and a stress sheet 19 are fixedly connected on the inner side wall of the oil baffle plate 18, the stress sheet 19 is in an arc shape, the left side of the oil baffle plate 18 is provided with a filtering and dust removing mechanism, the filtering and dust removing mechanism comprises a knocking rod 22 fixedly connected on the left side wall of the oil baffle plate 18, a filter plate 24 is fixedly connected on the inner side wall of the connecting pipe 5, 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 a circular shape, an elastic mechanism is fixedly connected on the outer side wall of the rotating ring 16, the elastic mechanism comprises a spring pipe 20 fixedly connected on the right side wall of the rotating ring 16, the inner side wall of the spring tube 20 is connected with a sliding connection block in a sliding mode, the right side of the connection block is fixedly connected with a spring 21, the spring 21 is made of stainless steel materials, the spring 21 is an elastic spring, the spring 21 is more durable and has longer service life, and the right side of the spring 21 is fixedly connected with the inner side wall of the spring tube 20;
through the arrangement of the stress sheet 19, in the oil inlet process, the oil blocking plate 18 is jacked open by hydraulic oil, and meanwhile, under the flowing action of the hydraulic oil, the stress sheet 19 can be rotated, so that the oil blocking plate 18 can rotate, the blocking and rotary flow splitting work can be performed on the entering hydraulic oil, the flow rate of the entering hydraulic oil is reduced, the phenomenon that the flow rate is too high when the hydraulic oil enters the valve body 1 is prevented, the too high pressure impact on the interior of equipment caused by the hydraulic oil entering at a high flow rate is relieved, the burst of an internal pipeline is avoided, and the stable use of the equipment is ensured;
simultaneously through the board 18 that blocks oil, the cooperation of elasticity mechanism is used, when hydraulic oil gets into, the board 18 that will block oil backs up, it will move along with the board 18 that blocks oil to move to the left side to beat the pole 22, when equipment stop using, when not having oil to get into, the board 18 that blocks oil will reply fast under spring 21's elasticity effect, and then make to beat the pole 22 area and beat piece 23 and reply, beat on filter 24, will be attached to the impurity on filter 24 and hit down, prevent to use for a long time and accumulate too much impurity on the filter 24, avoided inside because pressure is too big, lead to the condition that the inner tube takes place to burst, ensure that equipment oil feed is steady.
In the invention, when in use, the oil inlet pipe 3 firstly leads in hydraulic oil, when the hydraulic oil enters the connecting pipe 5, the oil baffle plate 18 is extruded towards the left side, the hydraulic oil jacks the oil baffle plate 18, simultaneously, under the flowing action of the hydraulic oil, the stress sheet 19 is rotated, the oil baffle plate 18 is further rotated, the blocking and rotary shunting work is carried out on the entering hydraulic oil, the flow rate of the hydraulic oil is reduced, the knocking rod 22 moves towards the left side along with the oil baffle plate 18, the sliding plate 14 moves by controlling the deflection of the armature 13 in the magnetic field 12, the baffle plate is further driven to move, the baffle plate 14 moves towards the left side, when the pipe 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 towards the right side under the action of pressure, at the moment, the hydraulic oil flows out from the first connecting pipe 8, the second connecting pipe 10 is communicated with the oil outlet 9, when the deflection of the armature 13 in the control magnetic field 12 is controlled, the baffle 14 moves to the right side, and when the orifice of the right connecting pipe 5 is blocked, the pressure difference generated at the two ends of the valve core 7 can enable the valve core to move to the left side, at the moment, hydraulic oil can enter the second connecting port 10, the first connecting pipe 8 can be communicated with the oil outlet 9, after the use is finished, when the hydraulic oil is stopped to be communicated, the oil blocking plate 18 can quickly return under the elastic action of the spring 21, and then the knocking rod 22 can drive the knocking block 23 to return, the knocking is performed on the filter plate 24, and impurities attached to the filter plate 24 are knocked down.
In the description of the present invention, it is to 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", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The hydraulic servo valve comprises a valve body (1) and is characterized in that 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), the 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 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 oil control cavity (6), the bottom of the first connecting pipe (8) extends to the bottom of the valve body (1), and 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), the bottom of the oil control cavity (6) is fixedly connected with a second connecting pipe (10), the bottom end of the second connecting pipe (10) extends to the bottom of the valve body (1), the top of the oil inlet cavity (4) is provided with a communication port (11), the top of the communication port (11) is communicated with the oil control cavity (6), the inner side wall of the oil control cavity (6) is connected with a valve core (7) in a sliding manner, the top of the oil control cavity (6) is provided with a communicating pipe (25), the other end of the connecting pipe (5) is communicated with the inner side wall of the communicating pipe (25), the inner side wall of the shell (2) is fixedly connected with a magnet (12), the bottom of the shell (2) is connected with a sliding plate (14) in a sliding manner, the top of the sliding plate (14) is provided with an armature (13), and the bottom of the sliding plate (14) is fixedly connected with a baffle plate, fixedly connected with fixed plate (15) on the inside wall of oil feed chamber (4), it is connected with swivel becket (16) to rotate on the right side wall of fixed plate (15), it has dwang (17) to slide on the inside wall of fixed plate (15), the left side fixedly connected with of dwang (17) hinders oiled-plate (18), fixedly connected with atress piece (19) on the inside wall of hindering oiled-plate (18), the left side of hindering oiled-plate (18) has been seted up and has been filtered deashing mechanism, fixedly connected with elasticity mechanism on the lateral wall of swivel becket (16).
2. The hydraulic servo valve as recited in claim 1, wherein the filter ash removal mechanism comprises a knocking rod (22) fixedly connected to the left side wall of the oil baffle (18), a filter plate (24) is fixedly connected to the inner side wall of the connecting pipe (5), the end of the knocking rod (22) penetrates through the filter plate (24), and a knocking block (23) is fixedly connected to the end of the knocking rod (22).
3. A hydraulic servo valve according to claim 1, wherein the resilient means comprises a spring tube (20) fixedly connected to the right side wall of the rotating 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 sliding 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 arrangement 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 sliding plate (14) and the inner wall of the housing (2).
6. A hydraulic servo valve according to claim 1, wherein the force-receiving flaps (19) are of the arc type.
7. A hydraulic servo valve according to claim 1, wherein the spring (21) is made of stainless steel material, and the spring (21) is a spring.
8. A hydraulic servo valve according to claim 3, wherein the end of the strike 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 true CN113153849A (en) | 2021-07-23 |
| CN113153849B CN113153849B (en) | 2023-09-15 |
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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 |
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| Country | Link |
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| CN (1) | CN113153849B (en) |
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| CN202707662U (en) * | 2012-09-01 | 2013-01-30 | 安徽理工大学 | Two-stage electro-hydraulic servo valve based on giant magnetostrictive electromechanical converter GMA |
| CN104613034A (en) * | 2014-11-28 | 2015-05-13 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Electro-hydraulic servo valve with safety protection devices |
| 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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