CN109973456A - A kind of automatically controlled high pressure check valve of combined type - Google Patents
A kind of automatically controlled high pressure check valve of combined type Download PDFInfo
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- CN109973456A CN109973456A CN201910304886.1A CN201910304886A CN109973456A CN 109973456 A CN109973456 A CN 109973456A CN 201910304886 A CN201910304886 A CN 201910304886A CN 109973456 A CN109973456 A CN 109973456A
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- load
- valve
- main valve
- push rod
- hole
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- 239000012530 fluid Substances 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 3
- 229910052742 iron Inorganic materials 0.000 claims 1
- 238000003780 insertion Methods 0.000 abstract description 3
- 230000037431 insertion Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method 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
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0603—Multiple-way valves
- F16K31/061—Sliding valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The present invention relates to a kind of automatically controlled high pressure check valves of combined type.Its technical solution is: the closed end of valve body (3) is fixed with electromagnet (10), valve body (3) is provided with main valve plug (4), and main valve plug (4) is sequentially arranged with off-load spool (6), spring base (5) and spring (2) from inside to outside；Off-load valve core rod (7) upper end is in contact with the lower part of off-load spool (6), the stem through-hole that off-load valve core rod (7) lower end is pierced by main valve plug (4) is in contact with the upper end of push rod (8), in circular hole of the lower part of push rod (8) through push rod through-hole insertion electromagnet (10) of valve body (3), the push rod through-hole wall of valve body (3) is equipped with ring type seal (9).Main valve plug (4) is hollow cylinder closed at one end and open at one end, and closed end shape is in circular cone shape, and closed end is provided with stem through-hole along axis, and the cavity inner end close to main valve plug (4) is radially equipped with 2~4 hydraulic fluid port III.The present invention has the characteristics that automatic control level is high, structure is simple, do not influenced by return oil pressure power, fast response time and does not need control oil circuit.
Description
Technical field
The invention belongs to check valve technical fields.More particularly, to a kind of automatically controlled high pressure check valve of combined type.
Background technique
Currently, it is more universal using check valve in hydraulic system, hydraulic control one-way valve is used in high-pressure hydraulic, it
High pressure oil can be lockked, make hydraulic cylinder stop motion.When needing hydraulic cylinder backhaul, at this moment the necessary release oil return of high pressure oil needs
Hydraulic control one-way valve is opened, oil liquid reverse flow is made.When reversely opening due to fluid-control one-way spool, it is difficult to beat under high pressure oil effect
It opens, and when control piston pushes inner elements of check valve open, the oil liquid pressure in high tension loop discharges in a short period of time, will cause
Very big impact, and with very loud discharge sound.So most fluid-control one-way, which all designs, guide's release spool, guide's off-load
After spool opens release, main valve plug can be opened, and oil liquid reverse flow is made.In order to open off-load spool, generally in fluid-control one-way
Design has control piston in valve, pushes off-load spool by control piston rod, carries out release.It is also provided with and unloads in control rod end chamber
Hydraulic fluid port, if, when return oil pressure power is high, control piston rod will be unable to work without unloading port.Structure is complicated for this hydraulic control one-way valve,
Control oil circuit is increased, while the hydraulic control time is generally higher than the electric control time, frequency response is also low.
Summary of the invention
The present invention aims to overcome the above drawbacks, it is therefore an objective to provide that a kind of automatic control level is high, structure is simple, not by oil return
Back pressure influence, fast response time and the automatically controlled high pressure check valve of a kind of combined type for not needing control oil circuit.
To achieve the goals above, the technical solution adopted by the present invention is that: the check valve include valve deck, spring, valve body,
Main valve plug, off-load spool, off-load valve core rod, push rod and electromagnet.
The open end of valve body is fixed with valve deck, and the closed end of valve body is fixed with electromagnet；Valve body is provided with main valve plug, main valve
Core is sequentially arranged with off-load spool, spring base and spring from inside to outside.The lower part of off-load spool is located at the stem through-hole of main valve plug
At aperture, spring base is mounted on the upper surface of off-load spool, and one end of spring is on spring base, the other end and valve deck of spring
Inner plane be in contact.Off-load valve core rod upper end is in contact with the lower part of off-load spool, and off-load valve core rod lower end is pierced by main valve plug
Stem through-hole be in contact with the upper end of push rod, in the circular hole of the lower part of push rod through the push rod through-hole insertion electromagnet of valve body, valve
The push rod through-hole wall of body is equipped with ring type seal.
Valve deck, spring, valve body, main valve plug, spring base, off-load spool, off-load valve core rod, push rod and electromagnet it is respective in
Heart line is same straight line.
Valve body is the hollow cylinder of end opening closed at one end and another, and the cavity of hollow cylinder is successively set from inside to outside
There are small chamber, annular oil groove and big chamber.Annular oil groove is radially provided with hydraulic fluid port I, and the small intracavitary end of valve body is radially opened
There is hydraulic fluid port II, the closed end of valve body is provided with push rod through-hole along axis.
Main valve plug is the hollow cylinder of end opening closed at one end and another, and the closed end shape of main valve plug is in the frustum of a cone
Shape, the cone angle of the frustum of a cone are 30 °~45 °.The closed end of main valve plug is provided with stem through-hole along axis, in the cavity of main valve plug
End is radially equipped with 2~4 hydraulic fluid port III.
The center line of the hydraulic fluid port III of main valve plug is the 0.75 of the annular oil groove width of valve body at a distance from main valve plug closed end
~0.85 times.The length of main valve plug is 0.7~0.8 times of the sum of the big cavity length of valve body and annular groove width, main valve plug outer diameter and
The nominal size of valve body diameter intracavitary greatly is identical.
Electromagnet shape be it is cylindric, be provided with push-rod hole in the axial direction at the fixing end center of electromagnet, electromagnet
End is equipped with plug.
Off-load spool is the entirety of hemisphere and short cylinder composition, and the short cylinder of off-load spool is located at hemispheroidal flat
At the center of face, the short cylinder diameter of off-load spool is 0.2~0.3 times of hemisphere diameter.
Spring base shape is the big cylindrical body of coaxial line and the entirety of small cylinder composition, the big cylindrical body of spring base and small
Cylindrical body is equipped with valve core through hole along axis, and valve core through hole internal diameter is identical as the short cylinder outer diameter nominal size of off-load spool, bullet
The short cylinder of spring abutment and off-load spool is set with.
Off-load valve core rod is the big cylindrical body of coaxial line and the entirety of small cylinder composition, the small cylinder of off-load valve core rod
Diameter is 0.3~0.4 times of the big cylinder diameter of off-load valve core rod.In the plain line side in big periphery edge of off-load valve core rod
To being provided with 2~4 oil unloading troughs, the nominal size of the stem through-hole diameter of the diameter and main valve plug of the big cylindrical body of off-load valve core rod
It is identical.
The shaft of push rod is round bar shape, and the upper end of push rod is in the form of annular discs, and the shaft of push rod and upper end are the whole of " T " shape
Body, the shaft outer diameter of push rod and the internal diameter nominal size of push rod through-hole of valve body are identical.
The material of the main valve plug is No. 45 steel.
The material of the off-load spool is No. 45 steel.
The material of the off-load valve core rod is No. 45 steel.
The electromagnet is on-off type electromagnet or is proportion electro-magnet.
Due to the adoption of the above technical scheme, compared to the prior art, the present invention has the following advantages:
1, when external power supply is connected with plug, the electric and power loss that obtains of electromagnet is controlled by electric signal, passes through control electricity
Magnet electric and power loss to control the opening and closing of off-load spool, so that control bound core is opened and closed, with it is existing by hydraulic control mode Lai
Unlike the opening and closing of control bound core, the present invention is using automatically controlled mode, to improve automatization level, while being convenient for long distance
From control.
2, the present invention uses the unlatching of magnet control off-load spool, and automatically controlled mode speed is higher than hydraulic control speed, mentions
The high response speed of the automatically controlled high pressure check valve of combined type, so that hydraulic system frequency response be made to improve.
3, the automatically controlled mode that the present invention uses, deletes hydraulic control architectures, does not have to access control oil sources and processing emptying
Mouthful, hydraulic fluid port is reduced, is not only simple in structure and leakage can be effectively reduced.
4, the automatically controlled mode that the present invention uses, the opening and closing of off-load spool are not influenced by return oil pressure power and do not need to control
Oil circuit.
5, when the electromagnet that the present invention uses is if on-off type electromagnet, on-off type electromagnet pushes main valve plug to open completely
It opens.When the electromagnet that the present invention uses is if proportion electro-magnet, proportion electro-magnet can not only push main valve plug to fully open, and also can
Main valve core segment is pushed to open, when main valve plug fully opens, proportion electro-magnet is identical as the effect of on-off type electromagnet；Work as master
When spool part is opened, the automatically controlled high pressure check valve of combined type plays throttling valve action, adjustable hydraulic cylinder movement speed.
Therefore, the present invention has that automatic control level is high, structure is simple, is not influenced by return oil pressure power, fast response time
The characteristics of with control oil circuit is not needed.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of valve body 3 in Fig. 1；
Fig. 3 is the structural schematic diagram of main valve plug 4 in Fig. 1；
Fig. 4 is the enlarged structure schematic diagram of off-load spool 6 in Fig. 1；
Fig. 5 is the enlarged structure schematic diagram of off-load valve core rod 7 in Fig. 1.
Specific embodiment
Present invention will be further described below with reference to the accompanying drawings and specific embodiments, not to the limit of its protection scope
System.
Embodiment 1
A kind of automatically controlled high pressure check valve of combined type.The present embodiment as shown in Figure 1: the check valve include valve deck 1, spring 2,
Valve body 3, main valve plug 4, off-load spool 6, off-load valve core rod 7, push rod 8 and electromagnet 10.
As shown in Figure 1, the open end of valve body 3 is fixed with valve deck 1, the closed end of valve body 3 is fixed with electromagnet 10；Valve body 3
It is provided with main valve plug 4, main valve plug 4 is sequentially arranged with off-load spool 6, spring base 5 and spring 2 from inside to outside.The lower part of off-load spool 6
At the aperture of the stem through-hole of main valve plug 4, spring base 5 is mounted on the upper surface of off-load spool 6, and one end of spring 2 is mounted in
On spring base 5, the other end of spring 2 is in contact with the inner plane of valve deck 1.The lower part of off-load valve core rod 7 upper end and off-load spool 6
It is in contact, the stem through-hole that 7 lower end of off-load valve core rod is pierced by main valve plug 4 is in contact with the upper end of push rod 8, the lower part warp of push rod 8
In the circular hole of the push rod through-hole insertion electromagnet 10 of valve body 3, the push rod through-hole wall of valve body 3 is equipped with ring type seal 9.
As shown in Figure 1, valve deck 1, spring 2, valve body 3, main valve plug 4, spring base 5, off-load spool 6, off-load valve core rod 7, pushing away
The respective center line of bar 8 and electromagnet 10 is same straight line.
As shown in Fig. 2, valve body 3 is the hollow cylinder of end opening closed at one end and another, the cavity of hollow cylinder by
It is successively arranged small chamber, annular oil groove and big chamber from inside to outside.Annular oil groove is radially provided with hydraulic fluid port I, the small intracavitary end of valve body 3
It is radially provided with hydraulic fluid port II, the closed end of valve body 3 is provided with push rod through-hole along axis.
As shown in figure 3, main valve plug 4 is the hollow cylinder of end opening closed at one end and another, outside the closed end of main valve plug 4
Shape is in circular cone shape, and the cone angle of the frustum of a cone is 30~40 °.The closed end of main valve plug 4 is provided with stem through-hole along axis, close to main valve
The cavity inner end of core 4 is radially equipped with 2 hydraulic fluid port III.
As shown in figure 3, the center line of the hydraulic fluid port III of main valve plug 4 is the annular of valve body 3 at a distance from 4 closed end of main valve plug
0.75~0.85 times of oil groove width.The length of main valve plug 4 is the 0.7~0.8 of the sum of the big cavity length of valve body 3 and annular groove width
Times, 4 outer diameter of main valve plug is identical as the big nominal size of intracavitary diameter of valve body 3.
As shown in Figure 1,10 shape of electromagnet be it is cylindric, be provided with and push away in the axial direction at the fixing end center of electromagnet 10
The end of rod aperture, electromagnet 10 is equipped with plug 11.
As shown in figure 4, off-load spool 6 is the entirety of hemisphere and short cylinder composition, the short cylindrical position of off-load spool 6
At hemispheroidal planar central, the short cylinder diameter of off-load spool 6 is 0.2~0.25 times of hemisphere diameter.
As shown in Figure 1, entirety of 5 shape of spring base for big cylindrical body and the small cylinder composition of coaxial line, spring base 5
Cylindrical body and small cylinder are equipped with valve core through hole, the short cylinder outer diameter name of valve core through hole internal diameter and off-load spool 6 along axis greatly
Adopted size is identical, and the short cylinder of spring base 5 and off-load spool 6 is set with.
As shown in figure 5, off-load valve core rod 7 is the big cylindrical body of coaxial line and the entirety of small cylinder composition, off-load spool
The small cylinder diameter of bar 7 is 0.3~0.35 times of the big cylinder diameter of off-load valve core rod 7.In the great circle of off-load valve core rod 7
Damaged surface is provided with 2 oil unloading troughs along plain line direction, and the diameter of the big cylindrical body of off-load valve core rod 7 and the valve rod of main valve plug 4 are logical
The nominal size of bore dia is identical.
As shown in Figure 1, the shaft of push rod 8 is round bar shape, the upper end of push rod 8 is in the form of annular discs, and the shaft of push rod 8 and upper end are
The entirety of " T " shape, the shaft outer diameter of push rod 8 and the internal diameter nominal size of push rod through-hole of valve body 3 are identical.
The material of the main valve plug 4 is No. 45 steel.
The material of the off-load spool 6 is No. 45 steel.
The material of the off-load valve core rod 7 is No. 45 steel.
The electromagnet 10 is on-off type electromagnet.
Embodiment 2
A kind of automatically controlled high pressure check valve of combined type.In addition to following technical parameters, remaining is with embodiment 1:
The cone angle of the frustum of a cone is 35~45 °；
The cavity inner end of the main valve plug 4 is radially equipped with 4 hydraulic fluid port III；
The short cylinder diameter of the off-load spool 6 is 0.25~0.3 times of hemisphere diameter；
The small cylinder diameter of the off-load valve core rod 7 is the 0.35~0.4 of the big cylinder diameter of off-load valve core rod 7
Times.4 oil unloading troughs are provided with along plain line direction in the big periphery of off-load valve core rod 7.
The electromagnet 10 is proportion electro-magnet.
Due to the adoption of the above technical scheme, compared to the prior art present embodiment has the advantage that
1, when external power supply is connected with plug 11, the electric and power loss that obtains of electromagnet 10 is controlled by electric signal, passes through control
Electromagnet 10 processed obtains electric and power loss to control the opening and closing of off-load spool 6, so that control bound core 4 is opened and closed, with existing by liquid
Prosecutor formula is come unlike the opening and closing of control bound core 4, and present embodiment is using automatically controlled mode, to improve automation
Level, while being convenient for far distance control.
2, present embodiment controls the unlatching of off-load spool 6 using electromagnet 10, and automatically controlled mode speed is higher than hydraulic
Speed is controlled, the response speed of the automatically controlled high pressure check valve of combined type is improved, so that hydraulic system frequency response be made to improve.
3, present embodiment use automatically controlled mode, delete hydraulic control architectures, do not have to access control oil sources and
Unloading port is processed, hydraulic fluid port is reduced, is not only simple in structure and leakage can be effectively reduced.
4, the automatically controlled mode that present embodiment uses, the opening and closing of off-load spool 6 do not influenced by return oil pressure power and
Control oil circuit is not needed.
5, when the electromagnet 10 that present embodiment uses is if on-off type electromagnet, on-off type electromagnet pushes main valve
Core 4 fully opens.When the electromagnet 10 that present embodiment uses is if proportion electro-magnet, proportion electro-magnet can not only be pushed
Main valve plug 4 fully opens, and 4 part of main valve plug can also be pushed to open, when main valve plug 4 fully opens, proportion electro-magnet and on-off
The effect of type electromagnet is identical；When 4 part of main valve plug is opened, the automatically controlled high pressure check valve of combined type plays throttling valve action, can
To adjust hydraulic cylinder movement speed.
Therefore, there is present embodiment automatic control level height, structure not to be influenced simply, or not be rung by return oil pressure power
The characteristics of answering speed fastly and not needing control oil circuit.
Claims (5)
1. a kind of automatically controlled high pressure check valve of combined type, it is characterised in that the check valve includes valve deck (1), spring (2), valve body
(3), main valve plug (4), off-load spool (6), off-load valve core rod (7), push rod (8) and electromagnet (10)；
The open end of valve body (3) is fixed with valve deck (1), and the closed end of valve body (3) is fixed with electromagnet (10)；Valve body (3) is built-in
Have main valve plug (4), main valve plug (4) is sequentially arranged with off-load spool (6), spring base (5) and spring (2) from inside to outside；Off-load spool
(6) lower part is located at the aperture of the stem through-hole of main valve plug (4), and spring base (5) is mounted on the upper surface of off-load spool (6),
On spring base (5), the other end of spring (2) is in contact with the inner plane of valve deck (1) for one end of spring (2)；Off-load spool
Bar (7) upper end is in contact with the lower part of off-load spool (6), off-load valve core rod (7) lower end be pierced by the stem through-hole of main valve plug (4) with
The upper end of push rod (8) is in contact, and the lower part of push rod (8) is inserted into the circular hole of electromagnet (10) through the push rod through-hole of valve body (3), valve
The push rod through-hole wall of body (3) is equipped with ring type seal (9)；
Valve deck (1), valve body (3), main valve plug (4), spring base (5), off-load spool (6), off-load valve core rod (7), pushes away spring (2)
The respective center line of bar (8) and electromagnet (10) is same straight line；
Valve body (3) is the hollow cylinder of end opening closed at one end and another, and the cavity of hollow cylinder is successively set from inside to outside
There are small chamber, annular oil groove and big chamber；Annular oil groove is radially provided with hydraulic fluid port I, and the small intracavitary end of valve body (3) is radially
It is provided with hydraulic fluid port II, the closed end of valve body (3) is provided with push rod through-hole along axis；
Main valve plug (4) is the hollow cylinder of end opening closed at one end and another, and the closed end shape of main valve plug (4) is in the frustum of a cone
Shape, the cone angle of the frustum of a cone are 30 °~45 °；The closed end of main valve plug (4) is provided with stem through-hole along axis, close to main valve plug (4)
Cavity inner end is radially equipped with 2~4 hydraulic fluid port III；
The center line of the hydraulic fluid port III of main valve plug (4) is the annular oil groove width of valve body (3) at a distance from main valve plug (4) closed end
0.75~0.85 times；The length of main valve plug (4) is 0.7~0.8 times of the sum of valve body (3) big cavity length and annular groove width,
Main valve plug (4) outer diameter is identical as the big nominal size of intracavitary diameter of valve body (3)；
Electromagnet (10) shape be it is cylindric, be provided with push-rod hole, electromagnetism in the axial direction at the fixing end center of electromagnet (10)
The end of iron (10) is equipped with plug (11)；
Off-load spool (6) is the entirety of hemisphere and short cylinder composition, and the short cylinder of off-load spool (6) is located at hemispheroidal
At planar central, the short cylinder diameter of off-load spool (6) is 0.2~0.3 times of hemisphere diameter；
Spring base (5) shape be coaxial line big cylindrical body and small cylinder composition entirety, the big cylindrical body of spring base (5) and
Small cylinder is equipped with valve core through hole, the short cylinder outer diameter nominal size phase of valve core through hole internal diameter and off-load spool (6) along axis
Together, spring base (5) and the short cylinder of off-load spool (6) are set with；
Off-load valve core rod (7) is the big cylindrical body of coaxial line and the entirety of small cylinder composition, the small column of off-load valve core rod (7)
Body diameter is 0.3~0.4 times of the big cylinder diameter of off-load valve core rod (7)；In the big periphery of off-load valve core rod (7)
2~4 oil unloading troughs, the diameter of the big cylindrical body of off-load valve core rod (7) and the stem through-hole of main valve plug (4) are provided with along plain line direction
The nominal size of diameter is identical；
The shaft of push rod (8) is round bar shape, and the upper end of push rod (8) is in the form of annular discs, and the shaft of push rod (8) and upper end are " T " shape
Entirety, the shaft outer diameter of push rod (8) is identical as the internal diameter nominal size of push rod through-hole of valve body (3).
2. the automatically controlled high pressure check valve of combined type according to claim 1, it is characterised in that the material of the main valve plug (4) is
No. 45 steel.
3. the automatically controlled high pressure check valve of combined type according to claim 1, it is characterised in that the material of the off-load spool (6)
For No. 45 steel.
4. the automatically controlled high pressure check valve of combined type according to claim 1, it is characterised in that the material of the off-load valve core rod (7)
Matter is No. 45 steel.
5. the automatically controlled high pressure check valve of combined type according to claim 1, it is characterised in that the electromagnet (10) is on-off
Type electromagnet is proportion electro-magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910304886.1A CN109973456A (en) | 2019-04-16 | 2019-04-16 | A kind of automatically controlled high pressure check valve of combined type |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910304886.1A CN109973456A (en) | 2019-04-16 | 2019-04-16 | A kind of automatically controlled high pressure check valve of combined type |
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| CN109973456A true CN109973456A (en) | 2019-07-05 |
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ID=67084883
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| CN201910304886.1A Pending CN109973456A (en) | 2019-04-16 | 2019-04-16 | A kind of automatically controlled high pressure check valve of combined type |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483654A (en) * | 2020-10-27 | 2021-03-12 | 北京宇航系统工程研究所 | Quick response solenoid valve |
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Application publication date: 20190705 |