CN109373019B - Check valve and compressor - Google Patents
Check valve and compressor Download PDFInfo
- Publication number
- CN109373019B CN109373019B CN201811540945.7A CN201811540945A CN109373019B CN 109373019 B CN109373019 B CN 109373019B CN 201811540945 A CN201811540945 A CN 201811540945A CN 109373019 B CN109373019 B CN 109373019B
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- vane
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- fixed
- check valve
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- 239000012530 fluid Substances 0.000 claims abstract description 50
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 24
- 230000001154 acute effect Effects 0.000 claims abstract description 5
- 238000004891 communication Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
- F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
- F16K15/035—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member with a plurality of valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
- F04B39/102—Adaptations or arrangements of distribution members the members being disc valves
- F04B39/1026—Adaptations or arrangements of distribution members the members being disc valves without spring
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a check valve and a compressor. The check valve having an open state for passing fluid and a closed state for preventing fluid from passing, the check valve comprising: a cylinder having a hollow passage for fluid communication; a fixed blade fixed on the cylinder and covering a partial region of the hollow passage; a rotary vane rotatably disposed in the hollow passage around a rotation axis disposed along an extending direction of the cylinder or at an acute angle to the extending direction of the cylinder, a surface of the rotary vane facing upstream being disposed such that fluid from the upstream can push the rotary vane to rotate in a direction in which a portion overlapping the fixed vane increases to bring the check valve into an open state in which the rotary vane and the fixed vane close the hollow passage; and the return device is connected with the rotary blade and is used for providing force for the rotary blade to move towards the closed state. The check valve of the invention has a more compact structure.
Description
Technical Field
The invention relates to the technical field of valves and compressors, in particular to a check valve and a compressor.
Background
In some devices for discharging fluids, if the pressure of the discharged fluid is high, a phenomenon of "back-flowing" is likely to occur when the device is stopped, i.e., the discharged fluid flows back into the device. For example, in a centrifugal compressor with a large pressure ratio, because the pressure difference between the discharge pressure and the suction pressure is large, the phenomenon of air flow backflow easily occurs when the compressor is stopped, so that the compression unit of the compressor, such as an impeller, is subjected to large impact, and when the compression unit is seriously impacted, the compression unit is reversed, the service life of the compression unit is reduced, and the reliability of the compressor and a unit where the compressor is located is affected. It is therefore necessary to provide a check valve on the discharge pipe of such devices to prevent the backflow of fluid.
Disclosure of Invention
The invention aims to provide a check valve which can be automatically opened under the action of fluid when upstream fluid is higher than a certain pressure and can be automatically closed to prevent the discharged fluid from flowing back when the operation is stopped, and has a compact structure. The invention also provides a compressor using the check valve.
A first aspect of the present invention discloses a check valve having an open state for passing a fluid and a closed state for preventing the passage of the fluid, comprising:
A cylinder having a hollow passage for fluid communication;
a fixed blade fixed to the cylinder and covering a partial region of the hollow passage;
A rotary vane rotatably provided in the hollow passage around a rotation axis provided along an extending direction of the cylinder or at an acute angle to the extending direction of the cylinder, a surface of the rotary vane facing upstream being provided so that fluid from upstream can push the rotary vane to rotate in a direction in which a portion overlapping with the fixed vane increases to place the check valve in the open state, and in the closed state, the rotary vane and the fixed vane close the hollow passage;
And a return device connected with the rotary blade and used for providing force for the rotary blade to move towards the closed state.
In some embodiments, the axis of rotation is coaxial with the barrel.
In some embodiments, the check valve includes a rotating shaft disposed along the rotational axis, the rotating vane being fixed to the rotating shaft.
In some embodiments, the side of the rotating blade is provided with a receiving groove for receiving the stationary blade.
In some embodiments, two or more of the rotating blades are disposed at intervals around the rotation axis, and two or more of the stationary blades are disposed in one-to-one correspondence with the two or more rotating blades.
In some embodiments, the radially outer ends of the fixed blades are in sealing connection with the cylinder, and the radially inner ends of the fixed blades are in sealing connection with the outer circumferential surface of the rotating shaft in a relatively sliding manner.
In some embodiments, more than two of the rotary vanes are included, with the sides of the rotary vanes in sealing contact with adjacent stationary vanes in the closed state.
In some embodiments of the present invention, in some embodiments,
The return device is arranged between the rotating blade and the fixed blade; and/or
The return device is arranged between the cylinder body and the rotating blade; and/or
The check valve comprises a rotating shaft arranged along the rotating axis, the rotating blades are fixed on the rotating shaft, and the return device is arranged between the rotating shaft and the fixed blades.
In some embodiments, the return means comprises a torsion spring disposed between the rotating shaft and the fixed blade.
In some embodiments, the rotating blade comprises:
A rotary torsion blade on which an upstream-facing surface of the rotary blade is disposed; and
And a rotary flat vane disposed downstream of the rotary torsion vane in the direction of the rotation axis for cooperating with the fixed vane to close the hollow passage in the closed state.
In some embodiments, the rotary blade further includes a connection portion at a side thereof connecting the rotary flat blade and the rotary torsion blade, the rotary flat blade, the connection portion, and the rotary torsion blade together forming a receiving groove for receiving the fixed blade.
In some embodiments, the stationary blade comprises:
a fixed torsion blade that prevents the rotary torsion blade from being excessively opened in the open state; and
And a fixed flat blade arranged downstream of the fixed torsion blade in the rotation axis direction, the fixed flat blade cooperating with the rotation flat blade to close the hollow passage in the closed state.
In some embodiments of the present invention, in some embodiments,
The fixed flat blade and the rotary flat blade have the same shape;
the fixed torsion blade and the rotary torsion blade have the same shape.
In some embodiments, the turning vanes are spaced apart from the turning flat vanes, and in the open state, the stationary vanes are positioned within the spacing between the turning vanes and the turning flat vanes.
A second aspect of the present invention discloses a compressor comprising any of the above check valves.
According to the check valve provided by the invention, the surface of the rotating blade facing the upstream is arranged such that the fluid from the upstream can push the rotating blade to rotate towards the increasing direction of the overlapping part of the rotating blade and the fixed blade so as to enable the check valve to be in an open state, the rotating blade and the fixed blade are closed in a closed state, meanwhile, the return device provides a force tending to move towards the closed state for the rotating blade, namely, the rotating blade can rotate when the fluid from the upstream reaches a certain pressure to overcome the force of the return device so as to enable the check valve to be in the open state, and the fluid can be normally discharged. When the discharge of the fluid is stopped, the check valve can reversely rotate the rotary vane by the return means to put the check valve in a closed state, thereby preventing the backflow of the discharged fluid. The check valve has a short axial dimension due to the form of the fixed vane and the rotary vane, and thus, the check valve is compact.
The compressor with the check valve has the corresponding beneficial effects.
Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a schematic view showing a structure of a check valve in an opened state according to an embodiment of the present invention;
FIG. 2 is a schematic bottom view of the check valve of the embodiment of FIG. 1 in an open state;
FIG. 3 is a schematic view of the check valve of the embodiment of FIG. 1 in a closed state;
FIG. 4 is a schematic bottom view of the check valve shown in FIG. 3;
FIG. 5 is a schematic view of the rotary vane of the check valve of the embodiment of FIG. 1;
FIG. 6 is a schematic bottom view of the rotary blade of FIG. 5;
FIG. 7 is a schematic view of the stationary vanes and barrel of the check valve of the embodiment of FIG. 1;
fig. 8 is a schematic bottom view of the stationary blade and cylinder shown in fig. 7.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1 to 8, the check valve of the present embodiment has an open state in which fluid is passed and a closed state in which fluid is blocked from passing, and includes a cylinder 1, a fixed vane 2, a rotary vane 3, and a return means. The cartridge 1 has a hollow passage for fluid communication. The fixed vane 2 is fixed to the cylinder 1 and covers a partial region of the hollow passage. The rotary vane 3 is rotatably disposed in the hollow passage about a rotation axis which is disposed along the extending direction of the cylinder 1. The surface of the rotary vane 3 facing the upstream is provided such that the fluid from the upstream can push the rotary vane 3 to rotate in a direction in which the overlapping portion with the fixed vane 2 increases to put the check valve in an open state, and in a closed state, the rotary vane 3 and the fixed vane 2 close the hollow passage. In the closed state, the rotary vane 3 and the stationary vane 2 close the hollow passage, and a return means is connected to the rotary vane 3 for providing a force tending to move toward the closed state to the rotary vane 3.
The cylinder 1 may be installed in an exhaust pipe of an exhaust apparatus. As shown in fig. 1, the cylinder 1 is circular, the cavity inside the cylinder 1 is circular, and the hollow channel formed by the cylinder 1 is a circular channel. In some embodiments, not shown, the cylinder 1 may have other shapes, such as square, oval, etc., and the cavity inside the cylinder 1 may have various shapes, such as square, oval, etc., that is, the hollow passage may have various shapes. As shown in fig. 1, the fixed vane 2 is fixed to the cylinder 1 and covers a partial region of the hollow passage, and thus the portion of the hollow passage covered by the fixed vane 2 cannot pass through the fluid.
In this embodiment, the extending direction of the cylinder 1 is the axial direction of the circular cylinder 1. The angle between the rotation axis and the extending direction of the cylinder body 1 is the angle between a straight line taken along the extending direction and the rotation axis. The rotation axis may be arranged along the extension direction or may be at an acute angle to the extension direction, i.e. the rotation axis is not perpendicular to the extension direction. In the embodiment shown in fig. 1 to 8, the rotation axis of the rotary blade 3 is coaxial with the axis of the cylinder 1. When the axis of rotation is at an acute angle to this direction of extension of the cylinder, the axis of rotation in the illustration is inclined relative to the axial direction of the cylinder 1, the rotating blades 3 being arranged obliquely in the hollow channel.
As indicated by the direction of the arrows in fig. 1, fluid flows from upstream toward the check valve and then is discharged through the check valve during normal discharge of fluid. The surface of the rotating blade 3 facing upstream is subjected to the impact force of the fluid. The fact that the surface of the rotating blade 3 facing upstream is arranged such that the fluid coming from upstream can push the rotating blade 3 to rotate in a direction in which the portion coincides with the stationary blade 2 increases means that the surface of the rotating blade 3 facing upstream has a projected component on at least part of the plane passing through the rotation axis, so that the fluid coming from upstream gives the rotating blade 3a component of the force in the downstream direction of the surface facing upstream, as well as a component of the force of the rotation of the surface around the rotation axis. The direction of the return means to the rotating blade is set opposite to the direction of the urging force. When the component of the fluid flowing upstream to the surface rotating around the rotation axis is sufficiently large, the rotary vane 3 will open the check valve against the force of the return means, i.e. the rotary vane 3 will rotate in a direction of increasing the overlap with the stationary vane 2, the more the overlap of the rotary vane 3 with the stationary vane 2, the fewer the hollow channels the rotary vane 3 and the stationary vane 2 jointly cover, the larger the cross-sectional area of the channel for fluid flow.
When the discharge of the fluid is stopped, the rotary vane 3 closes the check valve by the force of the return means, that is, the rotary vane 3 rotates in a direction in which the overlapping portion with the fixed vane 2 is reduced to close the hollow passage together with the fixed vane 2, so that the check valve is in a closed state, and the discharged fluid downstream of the check valve is prevented from flowing back through the check valve.
The check valve of the present embodiment can automatically rotate the rotary vane 3 to open the check valve by the fluid of a predetermined pressure from the upstream side during normal fluid discharge, thereby normally discharging the fluid. When the discharge of the fluid is stopped, the check valve can reversely rotate the rotary vane by the return means to put the check valve in a closed state, thereby preventing the backflow of the discharged fluid. The fluid in this embodiment may be a gas, a liquid, or the like. The check valve has a short axial dimension due to the form of the fixed vane and the rotary vane, and thus, the check valve is compact.
In some embodiments, as shown in fig. 1 to 6, the rotation axis is coaxial with the axis of the cylinder 1, so that the structure of the check valve is more compact, and the arrangement is simple and convenient.
In some embodiments, as shown in fig. 1 to 6, the check valve includes a rotation shaft 34 provided along the rotation axis, the rotation vane 3 is fixed to the rotation shaft 34, and a side portion of the rotation vane 3 is provided with a receiving groove for receiving the fixed vane 2. The rotary blade 3 may be fixedly connected to the rotary shaft 34, or may be integrally formed with the rotary shaft 34. The rotating shaft 34 is arranged, so that the stability of the rotating blades 3 during rotation and synchronous rotation of the rotating blades 3 are facilitated, and meanwhile, a return device is also facilitated, so that the return device provides acting force for the rotating blades 3.
The rotary vane 3 is provided with a receiving groove so that the rotary vane 3 can receive the fixed vane 2 through the receiving groove when rotating in a direction of opening the check valve, thereby increasing the overlapping portion of the rotary vane 3 and the fixed vane 2 and increasing the cross-sectional area of the fluid flow passage. Meanwhile, after the accommodating groove is formed, in the process of opening the check valve, the fixed blades 2 can limit the rotation of the rotating blades 3 through the cooperation of the accommodating groove, so that the rotating blades 3 are prevented from being excessively opened, and in addition, when the check valve is in a closed state, the bottom of the accommodating groove can be in sealing contact with the fixed blades 2 on the other side to seal a hollow channel. Meanwhile, the accommodating groove is arranged, so that the structure of the check valve is more compact.
In some embodiments, two or more rotating blades 3 are arranged at intervals around the rotation axis, and two or more stationary blades 2 are arranged in one-to-one correspondence with two or more rotating blades 3. Providing a plurality of rotary vanes 3 and fixed vanes 2 helps to smooth the opening and closing of the check valve. In some embodiments, the plurality of rotating blades 3 are centrally symmetric with respect to the rotation axis, and the corresponding plurality of stationary blades 2 are also centrally symmetric with respect to the rotation axis.
In some embodiments, as shown in fig. 1 to 4, 7 and 8, the radially outer ends of the fixed blades 2 are sealingly connected to the cylinder 1, and the radially inner ends of the fixed blades 2 are slidably and sealingly connected to the outer circumferential surface of the rotating shaft 34. The sealing connection between the fixed blade 2 and the cylinder 1 may be fixed connection such as welding, or may be formed by integrally forming the fixed blade 2 and the cylinder 1.
In some embodiments, comprising more than two rotating blades 3, in the closed condition, the sides of the rotating blades 3 are in sealing contact with the adjacent stationary blades 2. By the side portion of the rotary vane 3 being in sealing contact with the fixed vane 2, sealing of the hollow passage can be achieved in the closed state of the check valve, and positioning of the rotary vane 3 when the check valve is closed can also be achieved by the stopper of the fixed vane 2 to the side portion of the rotary vane 3.
In some embodiments, the return means are provided between the rotating blade 3 and the stationary blade 2; and/or between the cylinder 1 and the rotating blades 3; and/or the check valve comprises a rotation shaft 34 arranged along the rotation axis, the rotary vane 3 is fixed on the rotation shaft 34, and the return means are arranged between the rotation shaft 34 and the fixed vane 2. This arrangement can achieve that the rotary vane 3 is rotated in a direction to close the check valve when stopping the discharge of the fluid to put the check valve in a closed state, thereby preventing the backflow of the discharged fluid.
In some embodiments, the return means comprise a torsion spring arranged between the rotation shaft 34 and said fixed blade 2. The torsion spring is used as a return device, and the structure is simple, stable and reliable.
In some embodiments, as shown in fig. 1 to 6, the rotary blade 3 includes a rotary flat blade 32 and a rotary torsion blade 31 arranged in the rotation axis direction. The rotary flat blade 32 is arranged downstream of the rotary torsion blade 31. The upstream facing surface of the rotary vane 3 is provided on the rotary torsion vane 31. The rotary flat vane 32 is adapted to cooperate with the fixed vane 2 in the closed state to close the hollow passage. This arrangement allows the rotary torsion vane 31 to receive the force of the fluid from upstream when opening the check valve, thereby opening the check valve. When the check valve is closed, the hollow passage is closed by the cooperation of the rotary flat vane 32 and the fixed vane 2, so that the check valve is closed stably and reliably. The arrangement of the rotary torsion blades 31 and the rotary flat blades 32 makes the rotary blades 3 easier to machine and shape, the rotary blades are relatively light in weight, and the switching between the closed state and the open state of the check valve is more stable and reliable.
In some embodiments, as shown in fig. 1 to 5, the rotary blade 3 further includes a connection portion 33 at a side thereof that connects the rotary flat blade 32 and the rotary torsion blade 31. The rotary flat blade 32, the connection portion 33, and the rotary torsion blade 31 together form a receiving groove for receiving the fixed blade 2. By providing the connection portion 33 to connect the rotary flat blade 32 and the rotary torsion blade 31, the shapes of the rotary flat blade 32 and the rotary torsion blade 31 can be made easier to process, and the positioning and sealing of the rotary blade 3 by the fixed blade 2 when the check valve is in the closed state can be also conveniently achieved by using the connection portion 33. The outer side surface of the connecting portion 33 may be configured to be adapted to the corresponding side surface of the fixed vane 2, for example, the outer side surface of the connecting portion 33 and the corresponding side surface of the fixed vane 2 may be configured to be elongated flat surfaces, and when the check valve is in the closed state, the elongated flat surfaces on the outer side of the connecting portion 33 abut against the elongated flat surfaces of the fixed vane 2, which is helpful for realizing surface sealing and improving sealing effect.
In some embodiments, the stationary blade 2 includes a stationary flat blade 22 and a stationary torsion blade 21 arranged in the rotation axis direction, the stationary flat blade 22 being disposed downstream of the stationary torsion blade 21. In the open state, the fixed torsion blade 21 prevents the rotating torsion blade 31 from being excessively opened. In the closed state, the fixed flat vane 2 cooperates with the rotating flat vane 32 to close the hollow passage. This arrangement contributes to the over-opening prevention of the stationary blade 2 and the sealing function with the rotary blade 3, and also contributes to the processing and manufacturing of the stationary blade 2.
In some embodiments, the fixed flat blade 22 is the same shape as the rotating flat blade 32, and the fixed torsion blade 21 is the same shape as the rotating torsion blade 31. This arrangement facilitates uniform manufacturing of the fixed vane 2 and the rotary vane 3 while also facilitating the fit between the rotary vane 3 and the fixed vane 2 in the open check valve state, reducing resistance to fluid flow.
In some embodiments, the rotary torsion blade 31 and the rotary flat blade 32 are disposed at a spacing therebetween, and in the open state, the fixed blade 2 is located within the spacing between the rotary torsion blade 31 and the rotary flat blade 32. This arrangement makes it possible to accommodate the rotary vane 3 with the fixed vane 2 in the gap therebetween in the open state of the check valve, increase the overlap between the rotary vane 3 and the fixed vane 2, reduce the resistance to fluid flow, and make the check valve more compact.
The fixed flat blades 22 and the fixed torsion blades 21 can be arranged at intervals or can be arranged in a fitting way.
The embodiment of the invention also discloses a compressor comprising the check valve of the embodiment.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (14)
1. A check valve having an open state for passing a fluid and a closed state for preventing the passage of the fluid, comprising:
a cylinder (1) having a hollow passage for fluid communication;
a fixed blade (2) fixed to the cylinder (1) and covering a partial region of the hollow passage;
A rotary vane (3) rotatably provided in the hollow passage around a rotation axis provided along an extending direction of the cylinder (1) or at an acute angle to the extending direction of the cylinder (1), a surface of the rotary vane (3) facing upstream being provided so that fluid from upstream can push the rotary vane (3) to rotate in a direction in which a portion overlapping with the fixed vane (2) increases to place the check valve in the open state, and in the closed state, the rotary vane (3) and the fixed vane (2) close the hollow passage;
Return means, associated with said rotary blade (3), for providing said rotary blade (3) with a force tending to move towards said closed condition;
wherein the rotary blade (3) comprises:
A turning vane (31), the upstream facing surface of the turning vane (3) being provided on the turning vane (31); and
A rotary flat blade (32) arranged downstream of the rotary torsion blade (31) in the direction of the rotation axis for cooperating with the stationary blade (2) in the closed state to close the hollow passage.
2. A non-return valve according to claim 1, wherein the rotation axis is coaxial with the cylinder (1).
3. A non-return valve according to claim 1, characterized in that the non-return valve comprises a rotation shaft (34) arranged along the rotation axis, the rotation vane (3) being fixed on the rotation shaft (34).
4. A non-return valve according to claim 3, characterized in that the side of the rotating vane (3) is provided with a receiving groove for receiving the stationary vane (2).
5. A non-return valve according to claim 3, wherein two or more of the rotary vanes (3) are arranged at intervals around the rotation axis, and two or more of the stationary vanes (2) are arranged in one-to-one correspondence with the two or more rotary vanes (3).
6. A check valve according to claim 3, wherein the radially outer end of the stationary vane (2) is sealingly connected to the cylinder (1), and the radially inner end of the stationary vane (2) is sealingly connected to the outer peripheral surface of the rotary shaft (34) in a relatively slidable manner.
7. A non-return valve according to claim 3, characterized in that it comprises more than two said rotary vanes (3), the sides of said rotary vanes (3) being in sealing contact with adjacent stationary vanes (2) in said closed condition.
8. The check valve of claim 1, wherein,
The return device is arranged between the rotating blade (3) and the fixed blade (2); and/or
The return device is arranged between the cylinder body (1) and the rotary blade (3); and/or
The check valve comprises a rotating shaft (34) arranged along the rotating axis, the rotating blades (3) are fixed on the rotating shaft (34), and the return device is arranged between the rotating shaft (34) and the fixed blades (2).
9. A non-return valve according to claim 8, characterized in that the return means comprise a torsion spring arranged between the rotation shaft (34) and the fixed vane (2).
10. A non-return valve according to claim 1, wherein the rotary vane (3) further comprises a connecting portion (33) at a side thereof connecting the rotary flat vane (32) and the rotary torsion vane (31), the rotary flat vane (32), the connecting portion (33) and the rotary torsion vane (31) together forming a receiving groove for receiving the stationary vane (2).
11. A check valve according to claim 1, wherein the fixed vane (2) comprises:
a fixed torsion blade (21), in the open state, the fixed torsion blade (21) preventing the rotary torsion blade (31) from being opened excessively; and
-A stationary flat blade (22) arranged downstream of the stationary torsion blade (21) in the direction of the rotation axis, the stationary flat blade (22) cooperating with the rotating flat blade (32) to close the hollow passage in the closed state.
12. The check valve of claim 11, wherein,
The fixed flat blades (22) are the same shape as the rotating flat blades (32);
The fixed torsion blade (21) has the same shape as the rotary torsion blade (31).
13. A non-return valve according to claim 11, wherein the rotary torsion vane (31) and the rotary flat vane (32) are arranged with a spacing therebetween, and wherein in the open state the stationary vane (2) is located within the spacing between the rotary torsion vane (31) and the rotary flat vane (32).
14. A compressor comprising a check valve according to any one of claims 1 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811540945.7A CN109373019B (en) | 2018-12-17 | 2018-12-17 | Check valve and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811540945.7A CN109373019B (en) | 2018-12-17 | 2018-12-17 | Check valve and compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109373019A CN109373019A (en) | 2019-02-22 |
| CN109373019B true CN109373019B (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811540945.7A Active CN109373019B (en) | 2018-12-17 | 2018-12-17 | Check valve and compressor |
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| CN (1) | CN109373019B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285096A (en) * | 2019-06-17 | 2019-09-27 | 奇鋐科技股份有限公司 | Fan Anti-backflow structure |
| CN110094335B (en) * | 2019-06-21 | 2020-12-29 | 江苏大学 | Energy-saving reliable low-noise small-sized draining pump |
| US11060524B2 (en) | 2019-07-04 | 2021-07-13 | Asia Vital Components Co., Ltd. | Fan backflow prevention structure |
| CN113482885A (en) * | 2021-07-27 | 2021-10-08 | 胡小林 | Valve for piston compressor |
| CN116163381B (en) * | 2022-12-20 | 2023-10-03 | 嘉兴市盛华人防设备有限公司 | Drainage structures and people's air defense equipment of people's air defense equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102483170A (en) * | 2009-06-30 | 2012-05-30 | 伊顿公司 | Aircraft low clearance fluid check valve |
| CN107076153A (en) * | 2014-09-19 | 2017-08-18 | 阿特拉斯·科普柯空气动力股份有限公司 | Inlet valve for compressor |
| CN208041230U (en) * | 2018-03-21 | 2018-11-02 | 山东科技大学 | A kind of ocean mineral riser check-valves |
| CN209340564U (en) * | 2018-12-17 | 2019-09-03 | 珠海格力电器股份有限公司 | Check-valves and compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8443833B2 (en) * | 2011-04-07 | 2013-05-21 | Hamilton Sundtrand Corporation | Check valve |
| EP3244108B1 (en) * | 2016-05-10 | 2019-01-30 | Hamilton Sundstrand Corporation | Check valves |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102483170A (en) * | 2009-06-30 | 2012-05-30 | 伊顿公司 | Aircraft low clearance fluid check valve |
| CN107076153A (en) * | 2014-09-19 | 2017-08-18 | 阿特拉斯·科普柯空气动力股份有限公司 | Inlet valve for compressor |
| CN208041230U (en) * | 2018-03-21 | 2018-11-02 | 山东科技大学 | A kind of ocean mineral riser check-valves |
| CN209340564U (en) * | 2018-12-17 | 2019-09-03 | 珠海格力电器股份有限公司 | Check-valves and compressor |
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