CN114658900A - Anti-vibration check valve - Google Patents
Anti-vibration check valve Download PDFInfo
- Publication number
- CN114658900A CN114658900A CN202210406628.6A CN202210406628A CN114658900A CN 114658900 A CN114658900 A CN 114658900A CN 202210406628 A CN202210406628 A CN 202210406628A CN 114658900 A CN114658900 A CN 114658900A
- Authority
- CN
- China
- Prior art keywords
- flow
- hole
- flutter
- limiting
- valve core
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 58
- 230000000903 blocking effect Effects 0.000 claims description 15
- 230000004323 axial length Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 6
- 230000009471 action Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
-
- 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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/01—Damping of valve members
- F16K47/011—Damping of valve members by means of a dashpot
- F16K47/0112—Damping of valve members by means of a dashpot the valve members comprising a dashpot sliding over a fixed plunger
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/54—Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
-
- 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
- F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
- F16K15/026—Check valves with guided rigid valve members the valve being loaded by a spring the valve member being a movable body around which the medium flows when the valve is open
-
- 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
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
- F16K3/26—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
- F16K3/267—Combination of a sliding valve and a lift valve
-
- 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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
-
- 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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
- F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement
Abstract
The invention provides an anti-vibration check valve, which belongs to the technical field of check valves and comprises the following components: a housing having an inlet and an outlet for the passage of a medium; an adjustment member; a valve core; the valve core is provided with a flow-limiting through hole, and the sectional area of the flow-limiting through hole is gradually reduced along the medium flowing direction; when the sealing end is at the sealing position, the plugging part plugs the flow limiting through hole; when the sealing end is positioned at the circulation position, the plugging part partially or completely avoids the flow limiting through hole; an elastic member; according to the anti-flutter one-way valve, in the moving process of the valve core, the area of the plugging part plugged on the flow-limiting through hole is gradually reduced, the flow area is gradually increased, but the flow area is always smaller than that of the inlet, and the pressure at the inlet is gradually increased, so that the speed of the valve core is accelerated, the working time of the valve core under a low-flow working condition is shortened, and the flutter phenomenon is effectively inhibited.
Description
Technical Field
The invention relates to the technical field of one-way valves, in particular to an anti-vibration one-way valve.
Background
The one-way valve is one of the most widely used single-machine products in a pressurized conveying system and an attitude and orbit control power system of a carrier rocket, generally comprises an inlet shell, an outlet shell, a valve component, an elastic element, a guide structure, a static seal and other components, and has the function of realizing the one-way flow of a working medium. Check valves typically have three operating states: when the pressure difference force of the inlet and the outlet is smaller than the pretightening force of the elastic element, the valve is contacted with the valve seat under the pretightening force of the elastic element to realize sealing, and the valve is in a closed state; when the pressure difference force of the inlet and the outlet is increased to be larger than the pretightening force of the elastic element, the valve overcomes the elasticity of the elastic element to open under the action of the pressure difference force of the medium, the flow path is smooth, and the valve is in an open state; when the inlet pressure is lower than the outlet pressure, the valve is in contact with the valve seat under the action of the pretightening force and the reverse differential pressure of the elastic element to realize sealing, the valve is in a closed state, and the larger the reverse differential pressure is, the better the sealing performance of the valve is.
Flutter is a typical phenomenon occurring in the opening and closing process and low-flow work of a common one-way valve. When the valve is opened and closed and works at a small flow, the deformation of the elastic element is slightly increased compared with the closed state, and the elastic force is increased, so that the medium flow is small, the pressure difference force for driving the valve to move towards the opening direction is not enough to continuously overcome the elastic force, and the valve generates high-frequency reciprocating motion, namely flutter phenomenon near a balance position. The flutter can increase the loading frequency of the valve sealing surface, aggravate the abrasion of the guide surface between the valve and the guide structure, accelerate the fatigue failure of the elastic element, seriously affect the safety and the service life of the check valve and further endanger the normal work of the system. Therefore, flutter prevention measures should be taken in a targeted manner when designing the check valve structure.
At present, the common one-way valve anti-flutter technology is to increase valve motion damping, for example, a stainless steel spring ring, a corrugated band expansion ring, a non-metal bushing and the like are arranged, and the method can inhibit the flutter of the one-way valve to a certain extent, but also increases the risk of part clamping stagnation and reduces the reliability of products.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects of improvement mode in the prior art, increase the risk of part clamping stagnation and reduce the reliability of products, thereby providing the anti-vibration one-way valve.
In order to solve the technical problem, the invention provides an anti-flutter one-way valve, which comprises:
a housing having an inlet and an outlet for the passage of a medium;
an adjustment member disposed within the housing; the regulating piece comprises a blocking part and a flow passage communicated with the outlet;
the valve core is sleeved outside the adjusting piece in a sliding manner; the valve core is provided with a sealing end; the sealing end has a sealing position blocked at the inlet and also has a flow-through position away from the inlet; the valve core is provided with a flow-limiting through hole, and the sectional area of the flow-limiting through hole is gradually reduced along the medium flowing direction;
when the sealing end is at the sealing position, the plugging part plugs the flow limiting through hole; when the sealing end is positioned at the circulation position, the plugging part partially or completely avoids the flow limiting through hole;
the elastic piece is arranged between the valve core and the adjusting piece; the elastic member has a driving force for driving the sealing end to move from the flow position to the sealing position.
Preferably, the plurality of flow-limiting through holes are arranged at intervals along the circumferential direction of the valve core; the blocking part is in an annular flange shape.
Preferably, the flow limiting through hole is triangular, and the vertex angle faces the flowing direction of the medium.
Preferably, the outer surface of the valve core is provided with an annular shoulder which is in sealing abutment with the interior of the shell; the annular convex shoulder is arranged on one side of the flow-limiting through hole close to the outlet; the annular shoulder, the shell and the adjusting piece enclose to form an accommodating cavity for placing the elastic piece.
Preferably, the adjusting member has an annular limiting groove formed by extending towards the accommodating cavity, and the elastic member abuts against the annular limiting groove.
Preferably, the side wall of the regulating part is provided with a first flow through hole; the flow channel communicates with the accommodation chamber through the first flow through hole.
Preferably, the blocking portion is provided with a second flow hole therethrough.
Preferably, the housing includes:
the first shell is provided with an inlet for medium circulation;
the second shell is sleeved on the first shell; an outlet for medium circulation is formed in the second shell; the second housing is in threaded connection with the first housing.
As a preferred scheme, an annular groove is formed in the outer surface of the first shell, and a sealing rubber ring is arranged in the annular groove.
Preferably, the axial length of the restricted through hole is equal to the length of the movable distance of the spool.
The technical scheme of the invention has the following advantages:
1. the invention provides an anti-flutter one-way valve, which comprises: the valve comprises a shell, an adjusting piece, a valve core and an elastic piece; when the valve is in a closed state, namely the sealing end is in a sealing position under the action of the elastic force of the elastic element; when the valve core gradually enters the inlet, the sealing end is pressurized, the pressure overcomes the elastic force of the elastic piece, and the valve core is driven to move, namely the sealing end is started to be at a flow position; because the sectional area of the flow-limiting through hole is gradually reduced along the medium flowing direction, the area of the plugging part plugged on the flow-limiting through hole is gradually reduced and the overflowing area is gradually increased in the moving process of the valve core, but the overflowing area is always smaller than the inlet, the pressure at the inlet is gradually increased, the speed of the valve core is further accelerated, the working time of the valve core under the working condition of low flow is shortened, and the flutter phenomenon is effectively inhibited.
2. According to the anti-flutter one-way valve provided by the invention, the flow-limiting through hole is triangular, so that the change rule of the flow area along with the stroke of the valve core is in a parabolic form and the like, therefore, the increase rate of the flow area is slower at the initial stage of the movement of the valve core, and the flutter phenomenon can be effectively inhibited.
3. According to the anti-vibration one-way valve provided by the invention, the side wall of the adjusting piece is provided with the first flow through hole; the first flow through hole is formed for emptying the medium in the accommodating cavity.
4. According to the anti-vibration one-way valve provided by the invention, the blocking part is provided with the second flow through hole, and the second flow through hole is used for balancing the pressure difference between the upstream and the downstream of the blocking part.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic sectional view showing the anti-flutter check valve of the present invention.
Fig. 2 is a schematic perspective view of the valve cartridge of the present invention.
Fig. 3 is a schematic sectional view of the valve cartridge of the present invention.
Fig. 4 is a perspective view of the adjusting member of the present invention.
Fig. 5 is a cross-sectional structural view of the adjusting member of the present invention.
FIG. 6 is a plot of percent spool travel versus flow area ratio for various positions in accordance with the present invention.
Description of reference numerals:
1. a first housing; 2. a second housing; 3. an inlet; 4. an outlet; 5. a valve core; 6. a non-metallic sealing block; 7. a current limiting via; 8. an annular shoulder; 9. an elastic member; 10. an adjustment member; 11. a plugging section; 12. an annular groove; 13. an overflowing hole; 14. a flow-through chamber; 15. an annular limiting groove; 16. a first flow through hole; 17. a second flow through hole; 18. and sealing the rubber ring.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The present embodiment provides an anti-flutter one-way valve, as shown in fig. 1, comprising a housing having an inlet 3 and an outlet 4 for medium circulation therein; an adjusting piece 10 is arranged in the shell, and the adjusting piece 10 comprises a blocking part 11 and a flow passage communicated with the outlet 4; a valve core 5 is arranged outside the adjusting piece 10 in a sliding mode, one end of the valve core 5 is a sealing end, and the sealing end has a sealing position for blocking the inlet 3 and also has a flow position far away from the inlet 3; meanwhile, the outer wall of the valve core 5 is provided with a flow-limiting through hole 7, and the sectional area of the flow-limiting through hole 7 is gradually reduced along the medium flowing direction; when the sealing end is in a sealing position, the plugging part 11 plugs the flow limiting through hole 7; when the sealing end is at the circulation position, the plugging part 11 partially or completely avoids the flow limiting through hole 7. An elastic member 9 is provided between the valve body 5 and the adjusting member 10, and the elastic member 9 has a driving force for driving the seal end to move from the flow position to the seal position.
When the valve is in a closed state, namely the sealing end is in a sealing position under the action of the elastic force of the elastic element 9; when the inlet 3 is gradually entered, the sealing end is pressurized, the pressure overcomes the elastic force of the elastic element 9, and the valve core 5 is driven to move, namely, the sealing end is initially positioned at a flow position; because the sectional area of the flow-limiting through hole 7 is gradually reduced along the medium flowing direction, in the moving process of the valve core 5, the area of the plugging part 11 plugged on the flow-limiting through hole 7 is gradually reduced, the flow area is gradually increased, but the flow area is always smaller than that of the inlet 3, the pressure at the inlet 3 is gradually increased, and further the speed of the valve core 5 is accelerated, so that the working time of the valve core 5 under a low-flow working condition is shortened, and the flutter phenomenon is effectively inhibited.
As shown in fig. 2 and 3, the valve core 5 is of an annular structure, the outer diameter of the valve core is smaller than the inner diameter of the housing, and a gap is formed between the outer surface of the valve core 5 and the interior of the housing; the valve core 5 is internally provided with a cavity with one open end; one end of the valve core 5 is a sealing end, specifically, a dovetail groove is formed in the end part of the valve core 5, and a nonmetal sealing block 6 is placed in the dovetail groove through a pressing process to seal the end in a stroke; the non-metallic sealing block 6 has a hardness less than that of a metallic material, and can have a good sealing property when it is in direct contact with the inlet 3 of the housing to form a seal.
A plurality of flow-limiting through holes 7 are arranged at intervals in the circumferential direction of the valve core 5, the flow-limiting through holes 7 are opposite holes, in the scheme, the flow-limiting through holes 7 are triangular, further isosceles triangles, and one vertex angle of each isosceles triangle faces to the flowing direction of the medium, namely the direction of the outlet 4; the three inner corners of the flow limiting through hole 7 are all set to be round corners of R0.1-R0.2 to adapt to processing. The axial length of current-limiting through-hole 7 equals with the length of the displaceable distance of case 5, and in this scheme, the length of isosceles triangle's perpendicular bisector equals with the length of the displaceable distance of case 5.
An annular convex shoulder 8 is arranged on the outer surface of the valve core 5, and the outer surface of the annular convex shoulder 8 is in sealing and abutting joint with the inner wall of the shell; the annular convex shoulder 8 is arranged on one side of the flow-limiting through hole 7 close to the outlet 4; the annular convex shoulder 8, the interior of the shell and the adjusting piece 10 are enclosed to form an accommodating cavity, the accommodating cavity is used for placing the elastic piece 9, and one end of the elastic piece 9 is abutted against one side of the annular convex shoulder 8.
As shown in fig. 4 and 5, the blocking part 11 of the adjusting member 10 is in the shape of an annular shoulder 8, and the outer surface of the blocking part can be blocked on the flow limiting through hole 7; the adjusting piece 10 is also provided with a circulation channel; the structure is that the adjusting piece 10 is divided into an upper end and a lower end by an annular groove 12, a plugging part 11 is formed at one end, a flow through hole 13 is formed in the end part of the other end, a flow cavity 14 is formed at the other end of the flow through hole 13, and the annular groove 12, the flow through hole 13 and the flow cavity 14 form a flow passage of the adjusting piece 10 together; the width of the annular groove 12 is more than or equal to the axial length of the limiting through hole; the overflowing hole 13 is fan-shaped.
When the sealing end is in the sealing position, the plugging part 11 of the adjusting part 10 is plugged on the limiting through hole, the end part of the plugging part 11 close to the outlet 4 is aligned with the position of the flow limiting through hole 7 close to the outlet 4, when water flow has pressure on the valve core 5 and pushes the valve core 5 to move, the sealing end is in the flow position, the flow limiting through hole 7 is communicated with the annular groove 12, the communication section of the flow limiting through hole 7 and the annular groove 12 is gradually increased along with the movement of the valve core 5, and after the valve core 5 reaches the maximum movement stroke, the flow limiting through hole 7 is completely arranged corresponding to the annular groove 12, so that the maximum flow section is realized.
The end part of the adjusting piece 10 is provided with an annular limiting groove 15 formed by extending towards the accommodating cavity, and the other end of the elastic piece 9 abuts against the annular limiting groove 15; when the sealing end is in the sealing position, the end of the valve core 5 has a spacing distance from the edge of the annular limiting groove 15, and the spacing distance is the movable stroke of the valve core 5.
The outer wall of the adjusting part 10 is provided with a first flow through hole 16 at a position corresponding to the spacing distance, the first flow through hole realizes communication between the flow channel and the accommodating cavity, and the medium entering the accommodating cavity can be emptied.
The blocking part 11 is provided with through second flow holes 17 which are uniformly arranged along the circumferential direction, and the arrangement of the second flow holes 17 can balance the pressure difference between the upstream and the downstream of the blocking part 11 in the moving process of the valve.
The shell comprises a first shell 1 and a second shell 2 in threaded connection with the first shell 1; an inlet 3 for medium circulation is arranged on the first shell 1, and an outlet 4 for medium circulation is arranged on the second shell 2; the inlet 3 and the outlet 4 are oppositely arranged.
Furthermore, an annular groove is formed in the outer surface of the first shell 1, a sealing rubber ring 18 is arranged in the annular groove, and the sealing rubber ring 18 can effectively prevent the medium flowing inside from leaking.
Method of use and principles
When no medium flows, the valve core 5 drives the sealing end to be in close contact with the inlet 3 of the shell under the action of the elastic force of the elastic piece 9, so that sealing is realized, and the plugging part 11 completely shields the flow-limiting through hole 7.
When the medium flow begins, the valve core 5 is pushed to gradually move, the sealing end is gradually far away from the inlet 3 and starts to be at a flowing position, along with the movement of the valve core 5, the area of the blocking part 11 covering the limiting through hole is gradually reduced, the overflowing area is gradually increased, but the overflowing area at the position is always smaller than that at the inlet 3 of the shell, so that the projected area of the valve core 5 subjected to pressure difference in an opening state is much larger than that in a closing state, the opening speed of the valve core 5 is accelerated by the increase of the pressure difference force of the valve core 5 in the opening state, the working time of the valve core 5 under a low-flow working condition is shortened, and the flutter phenomenon is effectively inhibited; in addition, as shown in fig. 6, the limiting through holes are designed in an isosceles triangle, so that the change rule of the flow area along with the valve core 5 is in a parabolic form, that is, the change rate of the flow area is slower at the initial stage of opening and the final stage of closing of the valve core 5, and the flutter phenomenon can be effectively inhibited.
When the valve core 5 is completely opened, the flow area of the flow-limiting through hole 7 is larger than the effective area of the inlet and the outlet 4 of the shell, so that the smooth flow of the medium can be kept.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. An anti-flutter one-way valve, comprising:
a housing having an inlet (3) and an outlet (4) for the medium to flow through;
an adjustment member (10) disposed within the housing; the adjusting piece (10) comprises a blocking part (11) and a flow channel communicated with the outlet (4);
the valve core (5) is sleeved outside the adjusting piece (10) in a sliding manner; the valve core (5) is provided with a sealing end; the sealing end has a sealing position blocked at the inlet (3) and also has a flow-through position away from the inlet (3); the valve core (5) is provided with a limited flow hole (7), and the sectional area of the limited flow hole (7) is gradually reduced along the medium flow direction;
when the sealing end is at the sealing position, the plugging part (11) plugs the flow limiting through hole (7); when the sealing end is positioned at a circulating position, the plugging part (11) partially or completely avoids the flow limiting through hole (7);
an elastic member (9) disposed between the valve element (5) and the adjusting member (10); the elastic member (9) has a driving force for driving the sealing end to move from the flow position to the sealing position.
2. The flutter preventing check valve according to claim 1, wherein the flow restricting through-hole (7) has a plurality thereof, and is provided at intervals in a circumferential direction of the spool (5); the blocking part (11) is in an annular flange shape.
3. Anti-flutter one-way valve according to claim 2, characterized in that the flow restricting through-holes (7) are triangular with the apex angle directed towards the medium flow direction.
4. Anti-flutter one-way valve according to claim 1, characterized in that the outer surface of the spool (5) is provided with an annular shoulder (8) in sealing abutment with the inside of the housing; the annular convex shoulder (8) is arranged on one side, close to the outlet (4), of the flow limiting through hole (7); the annular shoulder (8), the shell and the adjusting piece (10) enclose to form a containing cavity for placing an elastic piece (9).
5. Anti-flutter one-way valve according to claim 4, characterized in that said adjusting member (10) has an annular limiting groove (15) formed extending towards said housing cavity, said elastic member (9) abutting in said annular limiting groove (15).
6. Anti-flutter one-way valve according to claim 4, characterized in that the side wall of the adjusting piece (10) is provided with a first flow through hole (16); the flow-through channel communicates with the receiving chamber through the first flow-through hole (16).
7. Anti-flutter one-way valve according to claim 1, characterised in that the blocking part (11) is provided with a second flow-through hole (17) therethrough.
8. The flutter resistant check valve of claim 1 wherein said housing comprises:
a first housing (1) provided with an inlet (3) for medium circulation;
the second shell (2) is sleeved on the first shell (1); an outlet (4) for medium circulation is formed in the second shell (2); the second shell (2) is in threaded connection with the first shell (1).
9. Anti-flutter one-way valve according to claim 8, characterized in that the outer surface of the first shell (1) is provided with an annular groove in which a sealing rubber ring (18) is arranged.
10. Anti-flutter one-way valve according to any one of claims 1-9, characterized in that the axial length of the restricted through-hole (7) is equal to the length of the movable distance of the spool (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210406628.6A CN114658900A (en) | 2022-04-18 | 2022-04-18 | Anti-vibration check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210406628.6A CN114658900A (en) | 2022-04-18 | 2022-04-18 | Anti-vibration check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114658900A true CN114658900A (en) | 2022-06-24 |
Family
ID=82035108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210406628.6A Pending CN114658900A (en) | 2022-04-18 | 2022-04-18 | Anti-vibration check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114658900A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050087234A1 (en) * | 2002-10-15 | 2005-04-28 | Takasago Engineering Co., Ltd. | Leak-detecting check valve, and leak-detection alarm system that uses said check valve |
| US20060037647A1 (en) * | 2004-08-18 | 2006-02-23 | Motoaki Okuda | Check valve |
| CN102287556A (en) * | 2011-07-22 | 2011-12-21 | 中国航天科技集团公司第六研究院第十一研究所 | Anti-shaking straight-through type one-way valve with large flow range |
| CN202418744U (en) * | 2011-12-21 | 2012-09-05 | 南京恒达压缩机有限公司 | Gas check valve |
| CN202441936U (en) * | 2012-02-28 | 2012-09-19 | 卢午明 | Shutoff safety valve |
| CN104895859A (en) * | 2014-03-06 | 2015-09-09 | 罗伯特·博世有限公司 | Valve assembly with load retaining function |
| US20150322743A1 (en) * | 2012-12-19 | 2015-11-12 | Forum Energy Technologies (Uk) Limited | Self-regulating surplussing check valve |
| CN204852490U (en) * | 2015-06-19 | 2015-12-09 | 潍坊友容实业有限公司 | Saline and alkaline land is with aerating system of administering silt |
| CN108180297A (en) * | 2017-11-30 | 2018-06-19 | 北京宇航系统工程研究所 | Anti- flutter check valve |
| KR20200051935A (en) * | 2018-11-06 | 2020-05-14 | 현대자동차주식회사 | Check valve |
| CN111561593A (en) * | 2020-05-27 | 2020-08-21 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Self-operated balance valve |
| CN215258025U (en) * | 2021-08-13 | 2021-12-21 | 河南航天液压气动技术有限公司 | Ultralow opening pressure relief valve |
-
2022
- 2022-04-18 CN CN202210406628.6A patent/CN114658900A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050087234A1 (en) * | 2002-10-15 | 2005-04-28 | Takasago Engineering Co., Ltd. | Leak-detecting check valve, and leak-detection alarm system that uses said check valve |
| US20060037647A1 (en) * | 2004-08-18 | 2006-02-23 | Motoaki Okuda | Check valve |
| CN102287556A (en) * | 2011-07-22 | 2011-12-21 | 中国航天科技集团公司第六研究院第十一研究所 | Anti-shaking straight-through type one-way valve with large flow range |
| CN202418744U (en) * | 2011-12-21 | 2012-09-05 | 南京恒达压缩机有限公司 | Gas check valve |
| CN202441936U (en) * | 2012-02-28 | 2012-09-19 | 卢午明 | Shutoff safety valve |
| US20150322743A1 (en) * | 2012-12-19 | 2015-11-12 | Forum Energy Technologies (Uk) Limited | Self-regulating surplussing check valve |
| CN104895859A (en) * | 2014-03-06 | 2015-09-09 | 罗伯特·博世有限公司 | Valve assembly with load retaining function |
| CN204852490U (en) * | 2015-06-19 | 2015-12-09 | 潍坊友容实业有限公司 | Saline and alkaline land is with aerating system of administering silt |
| CN108180297A (en) * | 2017-11-30 | 2018-06-19 | 北京宇航系统工程研究所 | Anti- flutter check valve |
| KR20200051935A (en) * | 2018-11-06 | 2020-05-14 | 현대자동차주식회사 | Check valve |
| CN111561593A (en) * | 2020-05-27 | 2020-08-21 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Self-operated balance valve |
| CN215258025U (en) * | 2021-08-13 | 2021-12-21 | 河南航天液压气动技术有限公司 | Ultralow opening pressure relief valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1794483B1 (en) | Anti-cavitation valve assembly | |
| US5226445A (en) | Valve having convex sealing surface and concave seating surface | |
| US7712724B2 (en) | Dynamic ball valve sealing device for three-way valves | |
| CN106051236B (en) | Check valve apparatus and method | |
| EP3739245B1 (en) | Butterfly valve | |
| CZ283321B6 (en) | Recirculating valve | |
| US10598291B2 (en) | Guided check valve | |
| CN212672426U (en) | Valve trim apparatus for use with a fluid valve and fluid valve | |
| CN114658900A (en) | Anti-vibration check valve | |
| US20120247585A1 (en) | Pressure reducing valve having shutoff mechanism | |
| KR100361200B1 (en) | Improved Automatic Recirculation Valve | |
| CN111795190A (en) | Piston-driven straight-through pressure-regulating flow-regulating valve | |
| FI79395B (en) | TRYCKREDUCERINGSVENTIL. | |
| KR101634084B1 (en) | Valve assembly mounted with compressing differential pressure reducing structure | |
| CN213685321U (en) | Electromagnetic valve | |
| RU2250405C1 (en) | Check valve | |
| JP5170011B2 (en) | Check valve | |
| CN211397838U (en) | Diaphragm pump | |
| CN216200885U (en) | Right-angle one-way valve with overflow function | |
| RU2744620C1 (en) | Check valve | |
| CN216618664U (en) | Valve clack structure and stop check valve | |
| CN212297797U (en) | Piston-driven straight-through pressure-regulating flow-regulating valve | |
| CN220505895U (en) | One-way valve | |
| CN219994696U (en) | Anti-leakage ball valve with butt joint pipe and anti-leakage ball valve | |
| EP3561347B1 (en) | Passive valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |