CN108644415B - Valve core and valve - Google Patents
Valve core and valve Download PDFInfo
- Publication number
- CN108644415B CN108644415B CN201810613347.1A CN201810613347A CN108644415B CN 108644415 B CN108644415 B CN 108644415B CN 201810613347 A CN201810613347 A CN 201810613347A CN 108644415 B CN108644415 B CN 108644415B
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- Prior art keywords
- valve
- fluid
- channel
- cavity
- sealing
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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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
- F16K11/052—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with pivoted closure members, e.g. butterfly valves
- F16K11/0525—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with pivoted closure members, e.g. butterfly valves the closure members being pivoted around an essentially central axis
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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
- 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
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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
- 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
- F16K1/46—Attachment of sealing rings
Abstract
The invention discloses a valve core and a valve. The valve core is arranged in the valve body and used for changing the flowing state of fluid in the valve body, the valve core comprises a sealing part, the sealing part is provided with a first state and a second state, the sealing part can realize sealing between the valve core and the inner wall of the valve body in the first state, and the sealing part releases the sealing between the valve core and the inner wall of the valve body in the second state. According to the valve core and the valve, the valve core and the valve body are sealed in the first state, the fluid flow state is controlled by utilizing the cooperation of the valve core and the valve body, and in the second state, the sealing between the valve core and the valve body is released, so that when the valve core rotates relative to the valve body, the friction between the sealing part and the inner wall of the valve body is zero, the external force required by controlling the valve core is reduced, and the valve core is more labor-saving in reversing or opening and closing.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a valve core and a valve.
Background
Currently, in valves of the prior art, a sealing ring is provided on a valve core, which sealing ring prevents fluid from flowing through a fit gap between the valve core and the valve body when the valve core is assembled in an inner cavity of the valve body and the sealing ring on the valve core is pressed between the valve core and the valve body.
In the valve, the sealing ring can avoid fluid flowing through the fit clearance between the valve core and the valve body, but the sealing ring is extruded between the valve core and the valve body, so that the valve core can rotate relative to the valve body, namely when the valve is reversed or opened and closed, the friction between the sealing ring and the valve body is increased, and further the external force for controlling the valve core is increased, and the reversing or opening and closing are difficult.
Disclosure of Invention
Accordingly, the present invention aims to provide a valve core and a valve which are convenient and labor-saving to change direction or open and close.
In order to achieve the above purpose, on one hand, the present invention adopts the following technical scheme:
a valve cartridge disposed within a valve body for changing a flow state of a fluid within the valve body, the valve cartridge comprising a sealing portion having a first state in which the sealing portion is capable of effecting a seal between the valve cartridge and an inner wall of the valve body and a second state in which the sealing portion releases the seal between the valve cartridge and the inner wall of the valve body.
Preferably, the sealing part comprises a flexible structure and a sealing cavity, the flexible structure forms at least part of a cavity wall of the sealing cavity, the switching of the sealing part from the second state to the first state is realized by injecting fluid into the sealing cavity, and the switching of the sealing part from the first state to the second state is realized by releasing the fluid in the sealing cavity.
Preferably, the seal cavity is annular or disc-shaped, and the valve core comprises a flow guiding structure which is communicated with the seal cavity so as to inject fluid into the seal cavity or release fluid from the seal cavity.
Preferably, the flexible structure is an annular structure, the radial section of the annular structure is U-shaped, the opening of the U-shaped is towards the radial inner side, an annular baffle is arranged at the opening of the U-shaped, and an inner cavity formed by the annular baffle and the flexible structure in a surrounding mode forms the sealing cavity.
Preferably, through holes extending in radial direction are provided in the annular baffle plate, said through holes forming part of the flow guiding structure.
Preferably, the flow guiding structure further comprises a fluid inlet channel and a fluid outlet channel which are communicated with the sealing cavity, wherein,
one end of the fluid introducing channel is communicated with the through hole, and the other end of the fluid introducing channel extends to the fluid inlet of the valve body or extends to the vicinity of the fluid inlet of the valve body;
one end of the fluid leading-out channel is communicated with the through hole, and the other end of the fluid leading-out channel is communicated with the low-pressure cavity in the valve body.
Preferably, the other end of the fluid introduction passage extends to a geometric center position at the fluid inlet of the valve body.
Preferably, the fluid introduction passage includes a first passage portion and a second passage portion connected to each other, wherein one end of the second passage portion communicates with the through hole;
the fluid extraction channel comprises a third channel part and a fourth channel part which are connected with each other, wherein one end of the fourth channel part is communicated with the through hole;
the second channel part and the fourth channel part are shared channels;
a reversing valve core is arranged among the first channel part, the third channel part and the common channel, the reversing valve core has two states, in the first state, the first channel part is communicated with the common channel, and the third channel part is blocked from the common channel; in the second state, the third passage portion communicates with the common passage, and the first passage portion and the common passage are blocked.
Preferably, the valve core comprises a valve plate and a valve rod connected with the valve plate, the valve plate comprises a first valve plate and a second valve plate, the sealing part is arranged between the first valve plate and the second valve plate, the first valve plate, the second valve plate and the sealing part enclose to form a cavity structure, and an opening of the through hole positioned on the radial inner side of the valve plate faces to a cavity of the cavity structure.
Preferably, the first valve plate is fixedly connected with the valve rod or is in an integral structure, the second valve plate and the first valve plate are arranged on one side, away from the valve rod, of the first valve plate in parallel, and the first channel part is at least partially arranged on the second valve plate.
Preferably, the first passage portion includes a first passage section extending in an axial direction of the valve stem, a second passage section provided in the cavity, and a third passage section extending perpendicularly to a plane where the valve plate is located, wherein the third passage section is insertable into the first valve plate and the valve stem.
Preferably, the common passage is configured as a bore section formed on the valve stem and extending in an axial direction of the valve stem, one end of the bore section being in communication with the cavity, the reversing valve cartridge being disposed at the other end of the bore section.
Preferably, a mounting hole is provided in the valve rod, the reversing valve core can be mounted to the other end of the hole section through the mounting hole, a pipe fitting is provided in the mounting hole, one end of the pipe fitting can be communicated with a channel in the reversing valve core, and the other end of the pipe fitting is communicated with a low-pressure cavity of the valve body.
Preferably, the valve core comprises a first driving structure connected with the reversing valve core, and the first driving structure can drive the reversing valve core to rotate, so that the reversing valve core can be switched between a first state and a second state;
the valve core comprises a second driving structure connected with the valve plate, and the second driving structure can drive the valve plate to rotate.
Preferably, the valve core further comprises a containing hole which is arranged on the valve rod and extends along the axial direction of the valve rod, the containing hole is communicated with the shared channel, and the first driving structure is arranged in the containing hole and is connected with the reversing valve core; the second drive structure includes a valve stem.
Preferably, the first drive structure and the second drive structure are arranged to: in a first angle range, the first driving structure drives the reversing valve core to rotate independently, and the valve plate does not rotate; and in a second angle range, the first driving structure drives the second driving structure to rotate simultaneously.
In order to achieve the above purpose, on the other hand, the present invention also adopts the following technical scheme:
the valve comprises a valve body and the valve core, wherein a first fluid channel and a second fluid channel are arranged in the valve body, the valve core can be switched between opening the first fluid channel, closing the second fluid channel, closing the first fluid channel and opening the second fluid channel, the valve core is in a first state when closing the first fluid channel or closing the second fluid channel, and the sealing part is in a second state when switching the fluid channels.
According to the valve core and the valve, the valve core and the valve body are sealed in the first state, the fluid flow state is controlled by utilizing the cooperation of the valve core and the valve body, and in the second state, the sealing between the valve core and the valve body is released, so that when the valve core rotates relative to the valve body, the friction between the sealing part and the inner wall of the valve body is zero, the external force required by controlling the valve core is reduced, and the valve core is more labor-saving in reversing or opening and closing.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings.
FIG. 1 is a cross-sectional view of a valve in an embodiment of the invention;
FIG. 2 is a cross-sectional view of a valve body in an embodiment of the invention;
FIG. 3 is a cross-sectional view of a valve cartridge in an embodiment of the invention;
FIG. 4 is a cross-sectional view of a first valve plate and valve stem in an embodiment of the present invention;
FIG. 5 is a view in the A direction of FIG. 4;
FIG. 6 is a cross-sectional view of a second valve plate in an embodiment of the present invention;
FIG. 7 is a view in the B direction of FIG. 6;
FIG. 8 is a schematic view of a flexible structure in accordance with an embodiment of the present invention;
FIG. 9 is a cross-sectional view of an annular baffle in an embodiment of the present invention;
FIG. 10 is a view in the direction C of FIG. 9;
FIG. 11 is a cross-sectional view of a reversing valve cartridge in accordance with an embodiment of the present invention;
FIG. 12 is a schematic illustration of the structure of a reversing valve cartridge in accordance with an embodiment of the present invention;
FIG. 13 is a cross-sectional view of a tube in an embodiment of the invention;
fig. 14 is a schematic structural view of a first driving structure in an embodiment of the present invention.
In the figure:
1. a valve body; 11. a water inlet; 12. a water outlet; 13. a valve cavity; 14. a valve stem opening;
2. a valve core; 21. a sealing part; 211. a flexible structure; 212. sealing the cavity; 213. an annular baffle; 2131. a through hole; 22. a flow guiding structure; 221. a fluid introduction channel; 2211. a first channel portion; 2212. a first channel segment; 2213. a second channel segment; 2214. a third channel segment; 2215. a second channel portion; 222. a fluid extraction channel; 2221. a third channel portion; 2222. a fourth channel portion; 2223. a common channel; 223. a cavity structure; 23. a reversing valve core; 231. a groove; 24. a valve plate; 241. a first valve plate; 2411. a connection hole; 242. a second valve plate; 25. a valve stem; 251. a mounting hole; 252. a pipe fitting; 253. an accommodation hole; 26. a first driving structure; 261. a rod piece; 2611. a mounting part; 2612. a protrusion; 27. and a second driving structure.
Detailed Description
The present invention is described below based on embodiments, and it will be understood by those of ordinary skill in the art that the drawings provided herein are for illustrative purposes and that the drawings are not necessarily drawn to scale.
Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, it is the meaning of "including but not limited to".
Referring to fig. 1 to 14, the present invention provides a valve cartridge provided in a valve body 1 for changing a flow state of a fluid in the valve body 1, which means changing a flow direction of the fluid or shutting off or opening the flow state of the fluid. For convenience of description, various embodiments of the valve element of the present invention will be described by taking a three-way valve as an example, that is, the valve element 2 of the present invention is disposed in the valve body 1 to form a three-way valve, as shown in fig. 1 and 2, a water inlet 11 and two water outlets 12 are disposed on the valve body 1, the water inlet 11 and the water outlets 12 are preferably in a tubular structure, the two water outlets 12 are coaxially disposed, the valve cavity 13 of the valve body 1 is preferably in a cylindrical shape, the axis of the cylindrical valve cavity 13 is coaxial with the axis of the water inlet 11, and the axis of the water inlet 11 is perpendicular to the axis of the water outlet 12 in the same plane, so that the hydration moment of the water received by the rotation of the valve element 2 is minimum, and the maintenance is more convenient.
As shown in fig. 1 and 3, the valve body 2 includes a sealing portion 21, and the sealing portion 21 has a first state and a second state, wherein in the first state, the sealing portion 21 is capable of sealing between the valve body 2 and an inner wall of the valve body 1, and controlling a fluid flow state by cooperation of the valve body 1 and the valve body 2, and in the second state, the sealing portion 21 releases the sealing between the valve body 1 and the valve body 2, so that when the valve body 2 rotates relative to the valve body 1, friction between the sealing portion 21 and the inner wall of the valve body 1 is zero, external force required for controlling the valve body 2 is reduced, and the valve body is more labor-saving in reversing or opening and closing.
In a preferred embodiment, as shown in fig. 1 and 3, the sealing portion 21 includes a flexible structure 211 and a sealing cavity 212, where the flexible structure 211 may be, for example, waterproof cloth, the flexible structure 211 forms at least part of a cavity wall of the sealing cavity 212, at least part of the cavity wall of the sealing cavity 212 formed by the flexible structure 211 is a part for sealing between the valve core 2 and the valve body 1, switching of the sealing portion 21 from the second state to the first state is achieved by injecting fluid into the sealing cavity 212, that is, when fluid is injected into the sealing cavity 212, the sealing cavity 212 formed by the flexible structure 211 expands under the action of the fluid, the sealing cavity 212 inflated by the injected fluid is used to fill up a margin between the valve core 2 and the valve body 1, sealing of the valve core 2 and the valve body 1 is achieved, switching of the sealing portion 21 from the first state to the second state is achieved by releasing the fluid in the sealing cavity 212, that is, when the fluid in the sealing cavity 212 is injected into the sealing cavity 212 is not used to release the valve core 2, and the valve body 1 is controlled to reduce the friction force between the valve core 2 and the valve body 1, and the friction force is reduced, and the valve body 1 is reduced relatively, and the friction force is reduced.
The seal cavity 212 is annular, the seal cavity 212 that the annular set up can form close fit with between the cylindrical valve pocket 13 of valve body 1, seal cavity 212 is oval annular preferably, wherein, flexible structure 211 is annular structure, the radial cross-section of annular structure is the U-shaped, flexible structure 211's shape is similar to the shape of outer tire, the opening of U-shaped is radially inboard towards oval radial that annular structure self was located, as shown in fig. 3 and 9 in the opening part of U-shaped is provided with annular baffle 213, annular baffle 213 and flexible structure 211 enclose synthetic inner chamber and constitute seal cavity 212, annular baffle 213 suit is in the opening part of U-shaped flexible structure 211, just the outer cylinder of annular baffle 213 is apart from the U-shaped bottom of flexible structure 211 has certain distance in order to guarantee the certain volume of seal cavity 212, it can be understood that annular baffle 213 and flexible structure 211 seal connection.
As shown in fig. 1 and 3, the valve cartridge 2 includes a flow guiding structure 22, and the flow guiding structure 22 communicates with the seal cavity 212 to inject fluid into the seal cavity 212 or release fluid from the seal cavity 212. Preferably, the flow guiding structure 22 includes radially extending through holes 2131 provided on the annular baffle 213, and the through holes 2131 are uniformly distributed between an inner cylindrical surface of the annular baffle 213 and an outer cylindrical surface of the annular baffle 213.
As shown in fig. 3, the flow guiding structure 22 further includes a fluid inlet channel 221 and a fluid outlet channel 222 communicating with the sealing chamber 212. Wherein one end of the fluid introducing channel 221 is communicated with the through hole 2131, and the other end of the fluid introducing channel 221 extends to the fluid inlet of the valve body 1 or extends to the vicinity of the fluid inlet of the valve body 1, preferably, the other end of the fluid introducing channel 221 extends to the geometric center position of the fluid inlet of the valve body 1, so that the pressure of the fluid introduced into the sealing cavity 212 by the fluid introducing channel 221 is the stagnation pressure of the fluid inlet of the valve body 1 when the valve core 2 and the valve body 1 are in a sealing state, and the pressure of the fluid introduced into the sealing cavity 212 is higher than or equal to the necessary pressure for sealing between the valve core 2 and the valve body 1, so that the pressure of the fluid in the sealing cavity 212 overcomes the pressure of the fluid at the position of the valve body 1 close to the sealing cavity 212, the sealing cavity 212 is expanded under the action of the fluid in the sealing cavity 212, the structure is ingenious, and the expansion effect is better. Wherein, one end of the fluid outlet channel 222 is communicated with the through hole 2131, and the other end is communicated with the low pressure cavity in the valve body 1, and the low pressure cavity in the valve body 1 is communicated with one water outlet 12 without water draining in the two water outlets 12 in this embodiment, namely, the back water side of the valve body 1.
As shown in fig. 3 to 7, the fluid introduction passage 221 includes a first passage portion 2211 and a second passage portion 2215 connected to each other, wherein one end of the second passage portion 2215 communicates with the through hole 2131, the fluid extraction passage 222 includes a third passage portion 2221 and a fourth passage portion 2222 connected to each other, wherein one end of the fourth passage portion 2222 communicates with the through hole 2131, and the second passage portion 2215 and the fourth passage portion 2222 are a common passage 2223. A reversing valve core 23 is disposed between the first passage portion 2211, the third passage portion 2221 and the common passage 2223, the valve core 2 forms a reversing valve body of the reversing valve core 23, and the junction position of the first passage portion 2211, the third passage portion 2221 and the common passage 2223 forms a reversing valve cavity in which the reversing valve body is disposed. The reversing valve core 23 has two states, in the first state, the first passage portion 2211 is communicated with the common passage 2223, the third passage portion 2221 is blocked from the common passage 2223, at this time, the fluid inlet passage 221 is opened, the fluid outlet passage 222 is blocked, the fluid is introduced into the seal chamber 212, the fluid in the seal chamber 212 does not flow out through the fluid outlet passage 222, the seal chamber 212 is expanded, the seal portion 21 is correspondingly in the first state, and the seal between the valve core 2 and the inner wall of the valve body 1 is established; in the second state, the third passage portion 2221 communicates with the common passage 2223, the first passage portion 2211 and the common passage 2223 are blocked, at this time, the fluid introduction passage 221 is blocked, the fluid extraction passage 222 is communicated, the fluid in the seal chamber 212 is discharged through the fluid extraction passage 222, no new fluid is introduced into the seal chamber 212, the seal chamber 212 is contracted, the seal portion 21 is correspondingly in the second state, and the seal between the valve body 2 and the inner wall of the valve body 1 is released.
The fluid inlet channel 221 or the fluid outlet channel 222 can be used for injecting or discharging fluid into or from the seal cavity 212, and the reversing valve core 23 is used for controlling the communication and cutoff between the fluid inlet channel 221 and the fluid outlet channel 222, so as to control the seal part 21 to switch between the first state and the second state, thereby realizing flexible and light control over the fluid inlet channel 221 or the fluid outlet channel 222.
In a further preferred embodiment of the above preferred embodiment, as shown in fig. 3-7, the valve core 2 comprises a valve plate 24 and a valve stem 25 connected to the valve plate 24, preferably the valve plate 24 is oval, so that the valve plate 24 can be engaged with the cavity wall of the valve cavity 13 when the valve plate 24 is disposed in the cylindrical valve cavity 13. The valve plate 24 includes a first valve plate 241 and a second valve plate 242, where the curved surface of the sidewall of the first valve plate 241 is a cylindrical surface, and the curved surface of the sidewall of the second valve plate 242 is a cylindrical curved surface, so that the valve plate 24 and the cylindrical valve cavity 13 are matched, the first valve plate 241 and the valve rod 25 are in an integral structure, the second valve plate 242 and the first valve plate 241 are arranged on one side of the first valve plate 241 away from the valve rod 25 in parallel, and a certain angle is formed between the valve plate 24 and the valve rod 25, so that when the valve rod 25 rotates, the valve plate 24 rotates around the axis of the water inlet 11 and is matched with the cylindrical valve cavity 13, and reversing resistance is reduced. The sealing portion 21 is disposed between the first valve plate 241 and the second valve plate 242, specifically, the annular baffle 213 is disposed at an opening of the U-shaped flexible structure 211, the sealing portion 21 formed by the annular baffle 213 and the flexible structure 211 is disposed between the first valve plate 241 and the second valve plate 242, and sealing rings are disposed between the flexible structure 211 and the first valve plate 241, and between the flexible structure 211 and the second valve plate 242, and the first valve plate 241, the second valve plate 242, the two sealing rings and the sealing portion 21 are fastened together by a screw thread manner, it will be understood that the positions of the screw threads should be staggered with respect to the through holes 2131, preferably, in an assembled state, the diameter of a cylindrical surface where an outer circumferential side wall of the annular baffle 213 is located is smaller than the diameter of a cylindrical surface where side walls of the first valve plate 241 and the second valve plate 242 are located, so as to avoid that the flexible structure blocks the through holes 2131 on the annular baffle 213 when the sealing cavity 212 is in a contracted state.
In addition, in the three-way valve formed by assembling the valve body 1 and the valve core 2, besides the water inlet 11 and the two water outlets 12 which are arranged on the valve body 1, as shown in fig. 1 and 2, a valve rod opening 14 which is arranged on the valve body 1 and through which the valve rod 25 passes is arranged, so that a valve plate 24 is controlled by controlling the valve rod 25, and further, the flowing state of fluid is changed, a bearing is arranged at the valve rod opening 14, the valve rod 25 is arranged at the valve rod opening 14 through the bearing, and obviously, a sealing ring is arranged between the valve rod 25 and the valve rod opening 14, so that when the sealing between the valve core 2 and the valve body 1 is released and the valve rod 25 is controlled to rotate, the fluid cannot overflow from an installation gap between the valve rod 25 and the valve rod opening 14.
The first valve plate 241, the second valve plate 242, and the sealing portion 21 enclose a cavity structure 223, as shown in fig. 3, an opening of the through hole 2131 located at a radial inner side of the valve plate faces to a cavity of the cavity structure 223, fluid introduced through the fluid introducing channel 221 enters the cavity structure 223 first, then flows into the sealing cavity 212 through the through hole 2131, after flowing out of the sealing cavity 212 through the through hole 2131, enters the cavity structure 223, and finally is discharged through the fluid extracting channel 222, and the cavity structure 223 forms a part of the flow guiding structure 22.
As shown in fig. 3, 4, 6 and 7, the first passage portion 2211 is at least partially disposed on the second valve plate 242, preferably, the first passage portion 2211 includes a first passage segment 2212 extending along an axial direction of the valve rod 25, a second passage segment 2213 disposed in a cavity of the cavity structure 223 and a third passage segment 2214 extending perpendicularly to a surface of the valve plate 24, the first passage segment 2212 is disposed on a side of the second valve plate 242 facing away from the first valve plate 241, the first passage segment 2212 extends in a direction consistent with an axis of the valve rod 25, in an assembled state, the second passage segment 2213 and the third passage segment 2214 are disposed in the cavity structure 223, it is worth to say that the second passage segment 2213 and the third passage segment 2214 are disposed only in the cavity structure 223, but are not directly communicated with the cavity structure 223, the second passage segment 2213 and the third passage segment 2214 are disposed on a side of the second valve plate 242 facing away from the first valve plate 241, the second passage segment 2212 is preferably disposed in a direction consistent with an axis of the valve rod 25, the second passage segment 2213 and the third passage segment 2214 is disposed in a state of the cavity structure 223, and the second passage segment 2214 is disposed in a direction consistent with the valve rod 25, and the second passage segment 2214 is disposed in the cavity structure has a common passage segment 2414 and the common passage segment 2414 is disposed in the cavity 2 and the valve segment 2414 is disposed in the cavity has a common passage segment 2414 and a common opening is disposed in the valve segment and a common passage segment 241.
As shown in fig. 3, the common passage 2223 is configured as a hole section formed on the valve stem 25 and extending in the axial direction of the valve stem 25, one end of the hole section being in communication with the cavity of the cavity structure 223, and the reversing valve spool 23 being provided at the other end of the hole section.
As shown in fig. 4 and 13, a mounting hole 251 is provided on the valve rod 25, the mounting hole 251 is provided along the radial extension of the valve rod 25, the reversing valve core 23 can be mounted to the other end of the hole section through the mounting hole 251, a pipe 252 is provided in the mounting hole 251, one end of the pipe 252 can be communicated with a channel in the reversing valve core 23, the other end of the pipe 252 is communicated with a low-pressure cavity of the valve body 1, the channel in the reversing valve core is preferably an L-shaped channel, an inner hole of the pipe 252 forms the third channel part 2221, when the reversing valve core 23 is mounted, firstly, the pipe 252 is mounted in the mounting hole 251 at the other end of the hole section along the axis of the mounting hole 251, finally, the pipe 252 is fastened on the valve rod 25 by a nut, and a sealing ring is obviously provided between the pipe 252 and the mounting hole 251 to ensure that fluid cannot flow out from a mounting gap between the pipe 252 and the mounting hole 251, so as to realize control of the third channel part 2221 or the cutting off of the common channel 2223 by using the reversing valve core 23.
As shown in fig. 3, 11, 12 and 14, the valve core 2 includes a first driving structure 26 connected to the reversing valve core 23, the first driving structure 26 can drive the reversing valve core 23 to rotate, so as to realize the conversion of the reversing valve core 23 between a first state and a second state, the first driving structure 26 includes an elongated rod 261, one end of the rod 261 is provided with a mounting portion 2611 assembled with the reversing valve core 23, for example, one end of the rod 261 is provided with a protrusion 2612, a groove 231 is provided on the reversing valve core 23, the reversing valve core 23 is controlled by assembling the protrusion 2612 in the groove 231, the valve core 2 includes a second driving structure 27 connected to the valve plate 24, the second driving structure 27 can drive the valve plate 24 to rotate, it is obvious that the second driving structure 27 includes a valve rod 25, a receiving hole 253 extending along the axial direction of the valve rod 25 is provided on the valve rod 25, the receiving hole 253 is communicated with the receiving hole 253 and the channel 261, the common axis line is connected to the first driving structure 2223 and the common driving structure 26 and the common driving structure 23 is provided in the common driving structure 23 and the valve core 23.
As shown in fig. 1, specifically, when one water outlet 12 and one water inlet 11 of the three-way valve formed by assembling the valve core 2 and the valve body 1 are communicated, the other water outlet 12 and the water inlet 11 are not communicated, and when the seal between the valve core 23 and the inner wall of the valve body 1 is established, the first passage portion 2211 of the fluid inlet passage 221 and the common passage 2223 are communicated through the passage in the reversing valve core 23, one end of the fluid inlet passage 221 extends to the fluid inlet of the valve body 1, the fluid is led into the seal cavity 212, the fluid in the third passage portion 2221 of the fluid outlet passage 222 and the common passage 2223 are cut off by the reversing valve core 23, the fluid in the seal cavity 212 does not flow out, the reliable use of the three-way valve formed by assembling the valve core 2 and the valve body 1 is realized, when the three-way valve needs to be reversed, the first step is controlled by the first driving structure 26 to rotate the reversing valve core 23 in the forward or reverse direction, at this time, the valve core 23 rotates relative to the valve plate 24, the valve plate 24 is cut off from the valve plate 24, the fluid inlet passage portion 2221 is not connected to the common passage 2, the fluid inlet passage portion 212 is discharged from the valve body 1, the fluid inlet portion 212 is disconnected from the fluid inlet passage 1, the three-way valve core 2 is discharged from the three-way valve body 1, the fluid inlet passage is sealed by the valve core 2 is discharged, and the three-way valve is sealed by the valve 1; in the second step, the second driving structure 27 controls the valve plate 24 to rotate independently in the same direction as the rotation direction of the first driving structure 26 in the first step, at this time, the valve plate 24 rotates relative to the reversing valve core 23, the valve plate 24 rotates relative to the valve body 1, and the reversing valve core 23 does not rotate relative to the valve body 1, so that the first passage portion 2211 is communicated with the common passage 2223, the fluid is introduced into the cavity of the seal 212, the third passage 2221 is cut off from the common passage 2223, the fluid in the cavity 212 does not flow out, the seal between the valve core 2 and the valve body 1 is established, and one reversing is finished. And when the reversing is needed to be continued, repeating the first step and the second step.
Preferably, the first driving structure 26 and the second driving structure 27 are arranged to: in a first angular range, the first driving structure 26 drives the reversing valve core 23 to rotate independently, and the valve plate 24 does not rotate; in the second angular range, the first driving structure 26 drives the second driving structure 27 to rotate simultaneously. Thus, when the three-way valve needs to be commutated, in a first step, the first driving structure 26 controls the commutating valve core 23 to rotate in a first direction, at this time, the commutating valve core 23 rotates relative to the valve plate 24, the valve plate 24 and the valve body 1 do not rotate relatively, so that the common passage 2223 is cut off from the first passage portion 2211 and is communicated with the third passage portion 2221, the fluid introducing passage 221 is cut off, fluid cannot be introduced into the seal cavity 212, the fluid extracting passage 222 is communicated, fluid in the seal cavity 212 is discharged from the seal cavity 212 under the pressure of the fluid flowing into the water inlet 11, and the seal between the valve core 2 and the valve body 1 is released; the second step, the first driving structure 26 controls the reversing valve core 23 to rotate continuously in the first direction, the second driving structure 27 controls the valve plate 24 to rotate in the first direction, at this time, the reversing valve core 23 and the valve plate 24 do not rotate relatively, and the valve plate 24 and the valve body 1 rotate relatively; third, the first driving structure 26 controls the reversing valve core 23 to rotate in a second direction opposite to the first direction, at this time, the reversing valve core 23 and the valve plate 24 rotate relatively, the valve plate 24 and the valve body 1 do not rotate relatively, at the same time, the first passage portion 2211 communicates with the common passage 2223, the fluid is introduced into the sealing chamber 212, the third passage 2221 and the common passage 2223 are cut off, the fluid in the sealing chamber 212 does not flow out, the seal between the valve core 2 and the valve body 1 is established, and the reversing is finished once. When the reversing is needed to be continued, the first step, the second step and the third step are repeated.
The invention also provides a valve, as shown in fig. 1, comprising a valve body 1 and the valve core 2, wherein a first fluid channel and a second fluid channel are arranged in the valve body 1, the first fluid channel refers to a fluid channel formed when one water outlet 12 is communicated with the water inlet 11, the second fluid channel refers to a fluid channel formed when the other water outlet 12 is communicated with the water inlet 11, the valve core 2 can be switched between opening the first fluid channel, closing the second fluid channel and closing the first fluid channel and opening the second fluid channel, the valve core 2 is in a first state when the first fluid channel is closed or the second fluid channel is closed, and the sealing part 21 is in a second state when the fluid channel is switched.
As shown in fig. 1 and 3, when mounting, firstly, the pipe member 252 is mounted in the mounting hole 251 of the valve stem 25, secondly, the sealing portion 21 is sandwiched between the first valve plate 241 and the second valve plate 242, and then the valve element 2 is fitted from the water inlet 11 side of the valve body, and the valve stem 25 is mounted in the valve stem opening 14, whereby the mounting of the valve element 2 and the valve body 1 is achieved.
It is easy to understand by those skilled in the art that the above preferred embodiments can be freely combined and overlapped without conflict.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A valve element provided in a valve body for changing a flow state of a fluid in the valve body, characterized in that the valve element includes a sealing portion having a first state in which the sealing portion is capable of achieving sealing between the valve element and an inner wall of the valve body and a second state in which the sealing portion releases the sealing between the valve element and the inner wall of the valve body;
the sealing part comprises a flexible structure and a sealing cavity, wherein the flexible structure forms at least part of a cavity wall of the sealing cavity, the sealing part is switched from the second state to the first state by injecting fluid into the sealing cavity, and the sealing part is switched from the first state to the second state by releasing the fluid in the sealing cavity;
the sealing cavity is annular or disc-shaped, the valve core comprises a flow guiding structure, and the flow guiding structure is communicated with the sealing cavity so as to inject fluid into the sealing cavity or release fluid from the sealing cavity;
the flexible structure is an annular structure, the radial section of the annular structure is U-shaped, the opening of the U-shaped is towards the radial inner side, an annular baffle is arranged at the opening of the U-shaped, and an inner cavity formed by the annular baffle and the flexible structure in a surrounding manner forms the sealing cavity;
a through hole extending along the radial direction is arranged on the annular baffle plate, and the through hole forms a part of the flow guiding structure;
the flow guiding structure also comprises a fluid inlet channel and a fluid outlet channel which are communicated with the sealing cavity, wherein,
one end of the fluid introducing channel is communicated with the through hole, and the other end of the fluid introducing channel extends to the fluid inlet of the valve body or extends to the vicinity of the fluid inlet of the valve body;
one end of the fluid leading-out channel is communicated with the through hole, and the other end of the fluid leading-out channel is communicated with a low-pressure cavity in the valve body;
the other end of the fluid introduction channel extends to a geometric center position at a fluid inlet of the valve body;
the fluid introduction passage includes a first passage portion and a second passage portion connected to each other, wherein one end of the second passage portion communicates with the through hole;
the fluid extraction channel comprises a third channel part and a fourth channel part which are connected with each other, wherein one end of the fourth channel part is communicated with the through hole;
the second channel part and the fourth channel part are shared channels;
a reversing valve core is arranged among the first channel part, the third channel part and the common channel, the reversing valve core has two states, in the first state, the first channel part is communicated with the common channel, and the third channel part is blocked from the common channel; in the second state, the third passage portion communicates with the common passage, and the first passage portion and the common passage are blocked.
2. The valve cartridge of claim 1, wherein the valve cartridge comprises a valve plate and a valve stem connected to the valve plate, the valve plate comprises a first valve plate and a second valve plate, the sealing portion is disposed between the first valve plate and the second valve plate, the first valve plate, the second valve plate and the sealing portion enclose a cavity structure, and an opening of the through hole located radially inward of the valve plate faces a cavity of the cavity structure.
3. The valve cartridge of claim 2, wherein the first valve plate is fixedly connected to the valve stem or is of an integral structure, the second valve plate is disposed parallel to the first valve plate on a side of the first valve plate remote from the valve stem, and the first channel portion is at least partially disposed on the second valve plate.
4. The valve cartridge according to claim 3, wherein the first passage portion includes a first passage section extending in an axial direction of the valve stem, a second passage section provided in the cavity, and a third passage section extending perpendicularly to a plane on which the valve plate is located, wherein the third passage section is insertable into the first valve plate and the valve stem.
5. The valve cartridge of claim 4, wherein the common passage is configured as a bore section formed on the valve stem and extending in an axial direction of the valve stem, one end of the bore section being in communication with the cavity, the reversing valve cartridge being disposed at the other end of the bore section.
6. The valve cartridge of claim 5, wherein a mounting hole is provided in the valve stem, the reversing valve cartridge being mountable to the other end of the bore section via the mounting hole, a tube being provided in the mounting hole, one end of the tube being communicable with the passage in the reversing valve cartridge, the other end communicating with the low pressure chamber of the valve body.
7. The valve cartridge of claim 2, wherein the valve cartridge includes a first drive structure coupled to the reversing valve cartridge, the first drive structure capable of rotating the reversing valve cartridge to effect a transition of the reversing valve cartridge between the first state and the second state;
the valve core comprises a second driving structure connected with the valve plate, and the second driving structure can drive the valve plate to rotate.
8. The valve cartridge of claim 7, further comprising a receiving bore disposed on the valve stem and extending axially of the valve stem, the receiving bore in communication with the common passage, the first drive structure disposed within the receiving bore and connected to the reversing valve cartridge; the second drive structure includes a valve stem.
9. The valve cartridge of claim 7, wherein the first drive structure and the second drive structure are configured to: in a first angle range, the first driving structure drives the reversing valve core to rotate independently, and the valve plate does not rotate; and in a second angle range, the first driving structure drives the second driving structure to rotate simultaneously.
10. A valve comprising a valve body and a valve cartridge according to any one of claims 1-9, in which valve body a first fluid channel and a second fluid channel are provided, the valve cartridge being switchable between opening the first fluid channel, closing the second fluid channel and closing the first fluid channel, opening the second fluid channel, the valve cartridge being in a first state when closing the first fluid channel or closing the second fluid channel, and the sealing portion being in a second state when switching the fluid channels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810613347.1A CN108644415B (en) | 2018-06-14 | 2018-06-14 | Valve core and valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810613347.1A CN108644415B (en) | 2018-06-14 | 2018-06-14 | Valve core and valve |
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| Publication Number | Publication Date |
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| CN108644415A CN108644415A (en) | 2018-10-12 |
| CN108644415B true CN108644415B (en) | 2023-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810613347.1A Active CN108644415B (en) | 2018-06-14 | 2018-06-14 | Valve core and valve |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4545408A (en) * | 1982-09-07 | 1985-10-08 | Applied Power, Inc. | Seal for a rotary hydraulic valve |
| US6260822B1 (en) * | 2000-01-04 | 2001-07-17 | Worldwide Oilfield Machine, Inc | Seat assembly for a gate valve |
| JP2001254844A (en) * | 2000-03-14 | 2001-09-21 | Toshiba Corp | Biplane valve |
| CN2765021Y (en) * | 2004-10-26 | 2006-03-15 | 李强 | Pressurized auxiliary sealing valve |
| CN102695901A (en) * | 2009-12-21 | 2012-09-26 | 美卓自动化有限公司 | Valve and sealing ring |
| CN105065706A (en) * | 2015-08-07 | 2015-11-18 | 张鹤鸣 | Air bag closed type stainless steel hemisphere valve |
| CN106246957A (en) * | 2016-08-02 | 2016-12-21 | 合肥通用机械研究院 | A kind of series connection four way ball valve group |
-
2018
- 2018-06-14 CN CN201810613347.1A patent/CN108644415B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4545408A (en) * | 1982-09-07 | 1985-10-08 | Applied Power, Inc. | Seal for a rotary hydraulic valve |
| US6260822B1 (en) * | 2000-01-04 | 2001-07-17 | Worldwide Oilfield Machine, Inc | Seat assembly for a gate valve |
| JP2001254844A (en) * | 2000-03-14 | 2001-09-21 | Toshiba Corp | Biplane valve |
| CN2765021Y (en) * | 2004-10-26 | 2006-03-15 | 李强 | Pressurized auxiliary sealing valve |
| CN102695901A (en) * | 2009-12-21 | 2012-09-26 | 美卓自动化有限公司 | Valve and sealing ring |
| CN105065706A (en) * | 2015-08-07 | 2015-11-18 | 张鹤鸣 | Air bag closed type stainless steel hemisphere valve |
| CN106246957A (en) * | 2016-08-02 | 2016-12-21 | 合肥通用机械研究院 | A kind of series connection four way ball valve group |
Non-Patent Citations (1)
| Title |
|---|
| 王念 ; 闫青 ; 梁健 ; 司彦教 ; 李营 ; .截止阀门全阻断密封结构设计.机械工程师.2016,(第04期),全文. * |
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| CN108644415A (en) | 2018-10-12 |
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