WO2019080365A1 - Structure de raccordement de tige de vanne pour vanne d'eau d'étanchéité, et vanne d'eau d'étanchéité - Google Patents

Structure de raccordement de tige de vanne pour vanne d'eau d'étanchéité, et vanne d'eau d'étanchéité

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Publication number
WO2019080365A1
WO2019080365A1 PCT/CN2018/000372 CN2018000372W WO2019080365A1 WO 2019080365 A1 WO2019080365 A1 WO 2019080365A1 CN 2018000372 W CN2018000372 W CN 2018000372W WO 2019080365 A1 WO2019080365 A1 WO 2019080365A1
Authority
WO
WIPO (PCT)
Prior art keywords
sealing
valve
valve stem
valve body
fastener
Prior art date
Application number
PCT/CN2018/000372
Other languages
English (en)
Chinese (zh)
Inventor
张南新
Original Assignee
新化县新园电子陶瓷有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 新化县新园电子陶瓷有限公司 filed Critical 新化县新园电子陶瓷有限公司
Publication of WO2019080365A1 publication Critical patent/WO2019080365A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—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 flat sealing faces; Packings therefor
    • 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
    • F16K3/02—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 flat sealing faces; Packings therefor
    • F16K3/04—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 flat sealing faces; Packings therefor with pivoted closure members
    • F16K3/06—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 flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages
    • F16K3/08—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 flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages with circular plates rotatable around their centres
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle

Definitions

  • the invention relates to the technical field of water valve structures, in particular to a valve stem joint structure for sealing a water valve. Further, the present invention relates to a seal water valve including the above-described valve stem joint structure for sealing a water valve.
  • Angle valves and faucets are commonly used domestic sealed water valves, and the water flow control part often adopts a spool mechanism.
  • the existing valve body mechanism has a complicated structure, including a valve sleeve, a valve stem, a moving piece, a static piece, a sealing ring and other auxiliary structures, and needs to be waterproof and leakproof inside the valve core mechanism and between the valve body mechanism and the valve body. Measures, and double-layer waterproof and leak-proof measures will contact the water flow erosion in the valve body cavity. Once there is leakage in one part, it will easily lead to leakage of the entire valve body structure.
  • valve stem is one of the frequently rotating parts in the sealing water valve, and it is difficult to completely seal between the valve stem and the surrounding structure, generally sealed by a sealing ring, but once the water enters and contacts the sealing ring, the valve When the rod is frequently rotated, the seal ring is easily worn out, causing water leakage.
  • the invention provides a valve stem connecting body structure and a sealing water valve for sealing a water valve, so as to solve the technical problem that the existing sealing water valve has a complicated structure, short service life, short service life and easy water leakage.
  • a valve stem joint structure for sealing a water valve comprising a fastener for sealing a valve body control mechanism assembly port of a seal seal water valve, for controlling a valve body control mechanism
  • a fastener for sealing a valve body control mechanism assembly port of a seal seal water valve, for controlling a valve body control mechanism
  • An open and closed valve stem and a rotor for being arranged as a part of the valve body control mechanism in the body cavity of the sealing water valve body by rotationally fitting to form fluid passages of different radial sizes, the valve stem being assembled to the valve body by a fastener
  • the movable piece On the assembly port of the control mechanism, the movable piece is connected to the valve stem and rotates with the valve stem, and the upper end surface of the movable piece and the lower end surface of the fastener are used for sealing the valve stem to be enclosed by the movable piece and the fastener.
  • the fit and sealing fit in the cavity comprising a fastener for sealing a valve body control mechanism assembly port of
  • the extending end of the valve stem extending into the valve body cavity of the sealing water valve is provided as a connecting portion for connecting the moving piece of the sealing water valve
  • the upper end surface of the movable piece is provided with a connection for connecting and accommodating the connecting portion
  • the groove, the lower end surface of the rotor is disposed for sealing engagement with the static seal of the sealing water valve and is rotationally fitted by the surface contact to close the fluid passage or form a sealing surface of the fluid passage of different radial dimensions.
  • connection between the connecting portion and the connecting groove is at least one of screwing, plugging, snapping, socketing, inserting, hot-melt welding, and bonding.
  • the fastener includes a valve body sealing cover for sealing the sealing valve body control mechanism assembly opening, and the valve body sealing cover lower portion is provided with a sealing and fastening connection with the valve body control mechanism assembly port inner cavity and the sealing water valve.
  • the static piece is in close contact with the sealing portion of the sealing contact, and the upper part of the valve body sealing cover is provided with a biasing portion for applying force when the sealing portion is connected with the valve body; the force applying portion, the valve body sealing cover and the sealing portion are integrally formed.
  • the integral part has a through hole for sealing the valve stem in the middle of the unit.
  • At least one outer sealing groove for accommodating the sealing ring for accommodating the seal between the sealing member and the valve body is circumferentially opened between the sealing portion and the valve body sealing cover; the outer surface of the sealing portion is provided for the valve
  • the external control thread of the body control mechanism is fitted with a threaded internal thread, and the external thread is a continuous thread or an external thread is provided with a check groove for preventing the thread from being reversely released after the thread is fitted.
  • At least two layers are arranged between the wall of the through hole and the valve stem and arranged in a ring shape in the circumferential direction for axial movement and radial movement restriction of the valve stem to ensure stability of the circumferential rotation of the valve stem.
  • the positioning ring is fixed in the first positioning groove formed by the outer surface of the valve stem and/or the positioning ring is fastened in the second positioning groove formed by the through hole of the fastener.
  • the movable piece includes a sealing section for connecting with the valve stem and the fastener to close the cavity where the valve stem is located and adjusting the rotation of the movable piece, and for sealing contact with the static piece and engaging by rotating cooperation
  • the adjustment section of the fluid passage of different radial dimensions, the shape of the end face of the adjustment section matches the shape of the inlet opening on the static piece.
  • corner portion of the adjustment section and/or the corner portion between the adjustment section and the sealing section are provided with a diagonal strut structure for increasing the strength of the wall.
  • the outer wall surface of the rotor is provided with a limiting member for engaging with the wall body of the sealing water valve body to limit the circumferential rotation range of the rotor.
  • a sealed water valve comprising the above-described valve stem joint structure for sealing a water valve.
  • the invention is used for sealing a valve stem connecting structure of a water valve.
  • the valve stem is assembled on a valve body control mechanism assembly opening of the sealing water valve by a fastener, and the movable piece is connected to the end of the valve stem and is matched with the fastener.
  • the valve stem is placed in the sealed cavity formed by the fastener and the moving piece, so that the sealing cavity where the valve stem is located is completely isolated from the water flow passage of the valve body cavity, and the valve stem is completely isolated from the water flow passage of the valve body cavity. Avoid the occurrence of wear during the frequent rotation of the valve stem and cause leakage of water around the valve stem.
  • the fastener When the fastener is assembled, the fastener is pressed and pressed against the moving piece, and the moving piece is pressed and pressed against the static piece, thereby forming an upper and lower double-layer sealing structure of the rotating part of the water flow control mechanism in the sealing water valve, ensuring the moving piece.
  • water will not seep from the water flow adjustment channel; combined with the static seal between the fastener and the valve body and between the static plate and the valve body, thereby ensuring the leakage prevention performance of the entire sealing water valve, effectively extending The service life of the sealed water valve.
  • the valve stem is connected to the inner cavity of the moving piece, and the channel of the moving piece and the static piece can be matched by twisting the valve stem to realize water flow control, and the whole structure has few accessories, and the sealing part is required to be sealed, and the assembly is simple.
  • the traditional complex valve core control mechanism is changed, and the movable piece and the static piece are directly pressed into the valve body cavity by the fasteners, and the control mechanism assembly port of the valve body is sealed, and the movable piece directly disposed in the valve body cavity is used.
  • the structure is simple and stable, the sealing part is less, the static sealing stability in the valve body cavity is good, the dynamic sealing reliability is high, and the service life of the sealing water valve is good. high.
  • FIG. 1 is a schematic structural view of a valve stem connecting structure for sealing a water valve according to a preferred embodiment of the present invention
  • FIG. 2 is a second structural schematic view of a valve stem connecting structure for sealing a water valve according to a preferred embodiment of the present invention
  • Figure 3 is a schematic view showing the structure of a fastener according to a preferred embodiment of the present invention.
  • FIG. 4 is a perspective structural view of a rotor of a preferred embodiment of the present invention.
  • Figure 5 is a top plan view of a rotor of a preferred embodiment of the present invention.
  • FIG. 1 is a schematic structural view of a valve stem connecting structure for sealing a water valve according to a preferred embodiment of the present invention
  • FIG. 2 is a schematic structural view of a valve stem connecting body structure for sealing a water valve according to a preferred embodiment of the present invention
  • 2 is a schematic structural view of a fastener according to a preferred embodiment of the present invention
  • FIG. 4 is a perspective structural view of a rotor of a preferred embodiment of the present invention
  • FIG. 5 is a schematic top plan view of a rotor of a preferred embodiment of the present invention.
  • the valve stem connecting structure for sealing a water valve of the embodiment includes a fastener 1 for sealing a valve body control mechanism assembly opening of the sealing water sealing valve, and is used for controlling the valve body control.
  • a valve stem 2 that is opened and closed by the mechanism, and a movable piece 3 that is disposed as a part of the valve body control mechanism in the body cavity of the sealing water valve body by rotationally fitting to constitute fluid passages of different radial sizes, and the valve stem 2 passes through the fastener 1 is assembled on the assembly opening of the valve body control mechanism, the movable piece 3 is connected to the valve stem 2 and rotates with the valve stem 2, and the upper end surface of the movable piece 3 and the lower end surface of the fastener 1 are used for sealing the valve stem 2 The sealing piece 3 is engaged with the sealing body formed in the cavity formed by the fastener 1 .
  • valve stem connecting structure for sealing the water valve the valve stem 2 is assembled on the valve body control mechanism assembly opening of the sealing water valve by the fastener 1, and the movable piece 3 is connected to the end of the valve stem 2 and is attached to the fastener 1
  • the sealing rod is matched so that the valve stem 2 is in the sealed cavity formed by the fastening of the fastener 1 and the movable piece 3, so that the sealing cavity where the valve stem 2 is located is completely isolated from the water flow passage of the valve body cavity, and the valve stem 2 is completely isolated. Outside the water flow passage of the valve body cavity, the wear of the valve stem 2 during frequent rotation is avoided to cause leakage of water around the valve stem 2.
  • the fastener 1 When the fastener 1 is assembled, the fastener 1 is pressed and pressed against the movable piece 3, and the movable piece 3 is pressed and pressed against the static piece, thereby forming an upper and lower double seal of the rotating part of the water flow control mechanism in the sealing water valve.
  • the structure ensures that the rotating piece 3 does not seep from the water regulating passage during the rotation adjustment, and combines the static sealing between the fastener 1 and the valve body and between the static piece and the valve body, thereby ensuring the entire sealing water valve. Anti-leakage performance, effectively extending the service life of the sealed water valve.
  • the valve stem 2 is connected to the inner cavity of the movable piece 3, and the valve plate 2 can be twisted to realize the passage of the movable piece 3 and the static piece to realize the water flow control, and the whole structural parts are few, and the connection part 201 which needs to be sealed is small, and the assembly is simple. .
  • the traditional complex valve core control mechanism is changed, and the fastener 1 is directly used to abut the movable piece 3 and the static piece in the valve body cavity and seal the valve body control mechanism assembly port, and is directly disposed in the valve body cavity.
  • valve stem 2 and the movable piece 3 cooperates to realize the water circulation in the valve body cavity; the structure is simple and stable, the sealing part is small, the static sealing stability in the valve body cavity is good, the dynamic sealing reliability is high, and the sealing water valve is high. High service life.
  • a split flat structure may be adopted between the valve stem 2 and the movable piece 3, or an integral structure formed integrally.
  • the valve stem 2 and the movable piece 3 are integrally formed and integrally formed, and may be a glass body, a ceramic body, a metal body or a plastic body.
  • valve stem 2 and the movable piece 3 can be selected according to the need, so that the valve stem 2 transmits the torque control rotor 3 to rotate, so as to achieve precise adjustment control of the water flow passage in the valve body cavity.
  • the outer corners of the fastener 1 are all set to arc angles to prevent collision damage or damage to the periphery.
  • the inner corners of the fasteners 1 are all set to chamfers or arc angles to prevent collision damage between each other during assembly; at the same time, forming a guiding structure during assembly, guiding the assembly into the assembly position, and improving assembly efficiency Improve assembly accuracy.
  • At least one of the fastener 1, the valve stem 2, and the rotor 3 is a glass body, a plastic body, a metal body or a ceramic body.
  • the vitreous body is injection molded with high-strength tempered glass.
  • the internal structure of the valve body can be seen, the appearance is beautiful, and it can be corrosion-proof. There is no problem of aging of the plastic shell structure and fluid contamination caused by the incoming fluid, environmental protection, health, An Jin.
  • the plastic body can be made of high-strength plastic, and the structure is light and cheap. When used for industrial applications and not used for drinking, it can also be made of waste plastic, metal body, good texture, beautiful appearance, strong: suitable for Use in environments that are not corrosive.
  • the ceramic body has the characteristics of slow heat transfer and uniform heat transfer. Even if it is opened, it is not easy to cause external burning sensation, and it is not easy to cause burns. There is no problem that the plastic shell structure is aged and the fluid flowing into the fluid is contaminated. Health and safety; can withstand high temperature, corrosion resistance, and beautiful appearance.
  • the extending end of the valve stem 2 extending into the valve body cavity of the sealing water valve is provided as a connecting portion 201 for connecting the rotor 3 of the sealing water valve.
  • a connecting groove 301 for connecting and accommodating the connecting portion 201 is opened on the upper end surface of the movable piece 3.
  • the mirror-fit seal between them ensures the structural stability of the dynamic seal and the reliability of the seal.
  • the lower end surface of the rotor 3 is provided as a sealing surface 302 for sealingly mating with the static seal of the sealing water valve and rotationally engaging by surface contact to close the fluid passage or to form fluid passages of different radial dimensions.
  • the connecting portion 201 adopts one of a cylindrical structure, a tapered structure, a tapered structure, a spherical structure, a hemispherical structure, an elliptical structure, and a semi-elliptical structure.
  • the maximum radial dimension of the connecting portion 201 is greater than the radial dimension of the through hole 104 to prevent the assembled valve stem 2 from coming out of the fastener 1.
  • the corner portions of the connecting portion 201 are all disposed at an arc angle to prevent the stress concentration damage caused by the joint connection with the movable piece 3.
  • the valve rod 2 is provided with a connecting structure for assembling the driving device or the force applying structure toward the outwardly extending end of the valve body.
  • the connecting structure is a card slot, a threaded hole, a buckle, a hot-melt welding hole, a plug hole, and a plug connection. At least one of the slots.
  • the axial length of the valve stem 2 is 10 mm to 100 mm; and the radial diameter of the valve stem 2 is 3 mm to 20 mm.
  • connection between the connecting portion 201 and the connecting groove 301 is at least one of screwing, plugging, snapping, socketing, inserting, hot-melt welding, and bonding.
  • the connection between the connecting portion 201 and the connecting groove 301 shown in Fig. 1 is a combination of an inner sleeve and an end plug.
  • the connection between the connecting portion 201 and the connecting groove 301 shown in Fig. 2 is screwed.
  • Different connection modes can be selected according to the needs and the size of the sealing water valve structure to ensure the stability of the connection between the connecting portion 201 and the connecting groove 301, and to ensure accurate control of the flow of water through the valve stem 2.
  • a connection position between the connecting portion 201 and the connecting groove 301 is further provided with a loosening structure for preventing the connecting portion 201 and the connecting groove 301 from being detached from each other.
  • the threaded connection is prevented from loosening by opening the anti-reverse groove.
  • the plug is prevented from being loosened by a buckle or a check protrusion.
  • the snap-in is prevented from being loosened by the anti-reverse buckle.
  • the socket is prevented from being loosened by a buckle or a check protrusion.
  • the insert is secured against loosening by an interference fit. Hot-melt welding or bonding is prevented by loosening of the anti-reverse projection, the anti-reverse buckle or the anti-reverse thread.
  • the fastener 1 includes a valve body sealing cover 101 for sealing the fitting valve body control mechanism assembly opening.
  • the lower portion of the valve body sealing cover 101 is provided with a sealing portion 102 for sealingly fastening the inner cavity of the valve body control mechanism assembly and sealing contact with the static plate of the sealing water valve.
  • the upper portion of the valve body sealing cover 101 is provided with a biasing portion 103 for biasing the sealing portion 102 when it is connected to the valve body.
  • the urging portion 103, the valve body sealing cover 101, and the sealing portion 102 are integrally formed as a single piece.
  • a through hole 104 for sealing the valve stem 2 is axially opened in the middle of the unitary member.
  • the valve stem 2 is assembled in the through hole 104 of the fastener 1 and the fastening connection assembly of the connecting portion 201 and the close contact of the valve body sealing cover 101 with the end surface of the valve body are sealed by applying force to the urging portion 103.
  • the end piece of the connecting portion 201 is pressed against the moving piece 3 to ensure the structural stability of the static piece and the moving piece 3 in the inner cavity of the valve body; the valve stem 2 is connected to the inner cavity of the moving piece 3, and can be realized by twisting the valve stem 2
  • the moving piece 3 cooperates with the passage of the static piece to realize water flow control, and the whole structure has few accessories and simple assembly.
  • the fastener 1 is directly used to press the movable piece 3 and the static piece in the valve body cavity and seal the control mechanism assembly port of the valve body, and the movable piece directly disposed in the valve body cavity is used.
  • 3 cooperate with the rotation of the static piece to realize the water flow in the valve body cavity;
  • the whole fastener 1 structure adopts the injection-molded integral structure, the structure is simple and stable, and the direct connection between the fastener 1 and the valve body is directly performed.
  • the static seal and the dynamic seal between the fastener 1 and the valve stem 2 are sealed at two places, so that the sealing of the valve body control mechanism assembly port can be realized, so that the service life of the seal water valve is obviously improved.
  • the integral component of the urging portion 103, the valve body sealing cover 101 and the sealing portion 102 is a glass body, a plastic body, a metal body or a ceramic body.
  • Different fastener structures can be selected to meet the needs of use and appearance.
  • the vitreous body is injection molded with high-strength tempered heat-resistant glass, which can easily view the internal structure, has good light transmission, beautiful appearance, and can prevent corrosion; there is no problem of plastic structure aging and fluid pollution caused by the incoming fluid, environmental protection and health ,Safety.
  • the plastic body can be made of high-strength plastic, the structure is light, and the price is cheap; when it is used for industrial applications and is not used for drinking, it can also be made of waste plastic.
  • the fastener 1 has an axial length of 5 mm to 20 mm.
  • At least one of the sealing portion 102 and the valve body sealing cover 101 is circumferentially opened for accommodating the sealing ring to constitute the fastener 1 and the valve body.
  • the outer surface of the sealing portion 102 is provided with external threads 106 for threaded engagement with the interior of the body of the valve body control mechanism.
  • the external thread 106 is a continuous thread or the external thread 106 is provided with a check groove 1061 for preventing the thread from being reversely released.
  • the connecting portion of the sealing portion 102 and the valve body, the outer sealing groove 105 and the sealing ring, and the sealing seal between the valve body sealing cover 101 and the end surface of the valve body form a multi-layer seal, and the fastener 1 and the valve body are
  • the static fastening fit ensures the tightness of the joint between the fastener 1 and the valve body.
  • the sealing service life is at least ten times higher than the existing spool valve.
  • the outer seal groove 105 adopts at least one of a semicircular groove, a U-shaped groove, a V-shaped groove, and a dovetail groove.
  • the outer seal groove 105 adopts a narrow groove having an outer narrow inner width.
  • the outer surface of the sealing portion 102 is provided with a fastener, a fitting or an elastic pull member for fastening.
  • the sealing portion 102 and the inner wall body of the valve body control mechanism assembly port are thermally welded.
  • a water seal or an oil seal is provided between the seal portion 102 and the valve body sealing cover 101 for blocking the flow of water and preventing water flow between the fastener 1 and the valve body.
  • a water seal or an oil seal is provided between the sealing portion 102 and the valve body sealing cover 101, or a water seal or an oil seal is formed by a structure between the sealing portion 102 and the valve body sealing cover 101, a connecting portion of the sealing portion 102, a water seal or
  • the sealing water seal formed by the oil seal and the sealing seal between the valve body sealing cover 101 and the end surface of the valve body form a multi-layer seal, and the fastener 1 and the valve body are statically fastened, so that the fastening can be completely ensured.
  • the sealing of the joint between the part 1 and the valve body, the sealing service life is at least ten times higher than the existing valve core valve.
  • the bottom end surface of the sealing portion 102 is provided as a plane for sealing contact with the sealing water valve, and/or the bottom end surface of the sealing portion 102 is provided with a water stop for blocking the flow of water and preventing the flow of water in the radial direction or Water stop ring.
  • Different end faces of the sealing portion 102 can be selected according to requirements to ensure the sealing seal between the sealing portion 102 and the moving piece 3, forming a sealing layer between the fastener 1 and the moving piece 3, and ensuring the sealing water of the entire sealing water valve. To effectively avoid water seepage and water leakage.
  • a plane may be selected, or a water stop or a water stop ring may be added to increase the waterproof and water stopping effect.
  • a sealing water film that is formed by the water side is naturally formed, and the water flow cannot be radially along the sealing surface.
  • At least two layers are arranged between the hole wall of the through hole 104 and the valve stem 2 in a circumferential direction and are used for axially of the valve stem 2 .
  • the movement and radial movement are limited to ensure that the valve stem 2 is circumferentially rotated to adjust the stability of the positioning collar 4.
  • the valve stem 2 is ensured by the positioning ring 4 that the rotating shaft does not shift, and the rotor 3 rotates with the valve stem 2 while ensuring that the rotor 3 does not shift during the rotation of the rotor 3, thereby ensuring the rotor 3 and
  • the rotation adjustment precision of the static piece and the dynamic sealing stability of the position of the upper end surface and the lower end surface of the rotor piece 3 are ensured.
  • the positioning ring 4 is fastened in the first positioning groove 202 formed on the outer surface of the valve rod 2 and/or the positioning ring 4 is fastened in the second positioning groove 1041 of the through hole 104 of the fastener 1 .
  • the setting position and the number of the positioning ring 4 can be flexibly selected to ensure the relative stability between the valve stem 2 and the fastener 1, and the valve stem 2 only has a circumferential rotation motion, thereby avoiding the valve stem. 2 Frictional collision with surrounding components.
  • the fastener 1 and the valve stem 2 and the movable piece 3 form a triangular sealing fit, thereby effectively providing the sealing of the joint portion;
  • the rotation stability of the valve stem 2 can be improved, and the stem 2 is effectively prevented from being deflected.
  • the first positioning groove 202 and/or the second positioning groove 1041 adopt at least one of a semicircular groove, a U-shaped groove, a V-shaped groove and a dovetail groove.
  • the first positioning slot 202 and/or the second positioning slot 1041 adopt a narrow slot with an outer narrow inner width.
  • the outer wall surface of the urging portion 103 is provided with at least one set of opposing force planes for urging; and/or the outer contour shape of the radial section of the urging portion 103 is triangular, quadrangular, pentagonal, One of the hexagons.
  • the outer shape structure of the urging portion 103 can be selected as needed to facilitate the force assembly of the fastener 1, and is suitable for various parts assembly.
  • the movable piece 3 includes a connection for contacting the valve stem 2 and the fastener 1 to close the cavity in which the valve stem 2 is located and realize the movable piece. 3 Rotating the adjusted sealing section 303 and the adjustment section 304 for sealing contact with the static sheet and by rotational fit to form fluid passages of different radial dimensions.
  • the shape of the end face of the adjustment section 304 matches the shape of the inlet opening on the static piece.
  • the movable piece 3 is provided with a plurality of active circulation passages and a plurality of sealing blocks for closing the fixed circulation passages on the static sheets, and the movable circulation passages are arranged at intervals from the sealing blocks.
  • a fixed flow passage of the static piece is simultaneously matched with the movable communication passage of the movable piece 3 .
  • a sealing block of the rotor 3 is simultaneously matched with a plurality of fixed flow passages of the stator.
  • the plurality of movable communication passages of the movable piece 3 communicate with the same water flow output port of the valve body, or the plurality of movable communication channels of the movable piece 3 are respectively connected to different water flow output outlets of the valve body.
  • the plurality of fixed flow passages of the static plate are connected to the same water flow input port of the valve body, or the plurality of fixed flow passages of the static plate are respectively connected to different water flow input ports of the valve body.
  • the moving piece 3 has an axial height of 2 mm to 30 mm; and a radial diameter of 5 mm to 30 mm.
  • the axial height of the static piece is 2 mm to 30 mm; and the radial diameter is 5 mm to 30 mm.
  • the corner portion of the adjustment section 304 and/or the corner portion between the adjustment section 304 and the seal section 303 are provided with a diagonal stay structure 305 for increasing the strength of the wall.
  • the outer wall surface of the movable piece 3 is provided with a limiting member 306 for engaging with the inner wall of the sealing water valve body to restrict the circumferential rotation range of the movable piece 3.
  • the sealing water valve of this embodiment includes the above-described valve stem connecting structure for sealing the water valve.
  • a connecting rod structure for sealing a water valve is provided, and the valve stem 2 is inserted and fitted in the through hole 104 of the fastener 1 through the fastener 1 on the valve body control mechanism assembly port of the valve body Make a tight connection.
  • the valve stem 2 end connecting portion 201 is inserted or screwed into the connecting groove 301 of the rotor 3.
  • the fastener 1 is assembled and pressed to limit the axial position of the rotor 3 and the stator, while the radial movement of the rotor 3 is restricted by the valve stem 2 to restrict the axial movement and radial movement of the rotor 3, ensuring
  • the movable piece 3 can only rotate along the circumferential direction of the valve stem 2, thereby ensuring a stable sealing surface dynamic sealing fit between the movable piece 3 and the fastener 1, so that the valve stem 2 is sealed with the fastener 1 and the moving
  • the cavity formed by the sheet 3 is arranged to effectively prevent water in the valve body cavity from entering the cavity where the valve stem 2 is located to come into contact with the valve stem 2 and leak from between the valve stem 2 and the fastener 1.
  • the valve stem connecting structure of the sealing water valve of the invention completely changes the traditional valve core structure, completely solves the problem that the traditional valve core structure is easy to cause water flow from the valve due to the frequent rotation of the valve stem 2 in the case of water contact with the sealing rubber ring.
  • the problem of leakage around the periphery of the rod 2. Compared with the traditional valve core structure, the structure is simpler, and the combination of compression and fitting ensures the structural stability of the rotation control part, and the size of the entire sealing water valve can be reduced while maintaining the original water quantity control, so that the entire seal The water valve is smaller, which reduces the cost of materials.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)
  • Taps Or Cocks (AREA)
  • Sliding Valves (AREA)

Abstract

L'invention concerne une structure de raccordement de tige de vanne destinée à une vanne d'eau d'étanchéité, et une vanne d'eau d'étanchéité. La structure de raccordement de tige de vanne destinée à une vanne d'eau d'étanchéité comprend un élément de fixation (1), une tige de vanne (2) utilisée pour commander l'ouverture et la fermeture d'un mécanisme de commande de corps de vanne, et une plaque mobile (3) disposée dans une cavité interne d'un corps de vanne d'eau d'étanchéité en tant que partie du mécanisme de commande de corps de vanne pour former des passages de fluide de tailles radiales différentes au moyen d'un ajustement de course. La tige de vanne (2) est assemblée sur une ouverture d'assemblage de mécanisme de commande de corps de vanne au moyen de l'élément de fixation (1). La plaque mobile (3) est reliée à la tige de vanne (2) et tourne conjointement avec la tige de vanne (2). La tige de vanne (2) est scellée dans une chambre formée par fixation et ajustement étanche entre la face d'extrémité supérieure de la plaque mobile (3) et la face d'extrémité inférieure de l'élément de fixation (1). L'écoulement d'eau dans la cavité interne du corps de vanne est activé ou désactivé au moyen de l'ajustement de course entre la plaque mobile et une plaque statique disposée directement dans la cavité interne du corps de valve, de telle sorte que les liaisons d'étanchéité soient moins importantes, la fiabilité d'étanchéité dynamique soit élevée, et la durée de vie de la vanne d'eau d'étanchéité soit longue.
PCT/CN2018/000372 2017-10-26 2018-10-26 Structure de raccordement de tige de vanne pour vanne d'eau d'étanchéité, et vanne d'eau d'étanchéité WO2019080365A1 (fr)

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