WO2022166580A1 - 流体连接器及密封结构 - Google Patents

流体连接器及密封结构 Download PDF

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Publication number
WO2022166580A1
WO2022166580A1 PCT/CN2022/072639 CN2022072639W WO2022166580A1 WO 2022166580 A1 WO2022166580 A1 WO 2022166580A1 CN 2022072639 W CN2022072639 W CN 2022072639W WO 2022166580 A1 WO2022166580 A1 WO 2022166580A1
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WO
WIPO (PCT)
Prior art keywords
sleeve
valve
sealing ring
fluid
sealing
Prior art date
Application number
PCT/CN2022/072639
Other languages
English (en)
French (fr)
Inventor
杨书亮
Original Assignee
深圳市英维克智能连接技术有限公司
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 深圳市英维克智能连接技术有限公司 filed Critical 深圳市英维克智能连接技术有限公司
Priority to EP22748859.0A priority Critical patent/EP4290112A1/en
Priority to US18/276,209 priority patent/US20240093819A1/en
Priority to AU2022217219A priority patent/AU2022217219A1/en
Publication of WO2022166580A1 publication Critical patent/WO2022166580A1/zh

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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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/28—Couplings of the quick-acting type with fluid cut-off means
    • F16L37/38—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in only one of the two pipe-end fittings
    • F16L37/40—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in only one of the two pipe-end fittings with a lift valve being opened automatically when the coupling is applied
    • F16L37/413—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in only one of the two pipe-end fittings with a lift valve being opened automatically when the coupling is applied the lift valve being of the sleeve type, i.e. a sleeve being telescoped over an inner cylindrical wall
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/22—Couplings of the quick-acting type in which the connection is maintained by means of balls, rollers or helical springs under radial pressure between the parts
    • F16L37/23—Couplings of the quick-acting type in which the connection is maintained by means of balls, rollers or helical springs under radial pressure between the parts by means of balls
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/28—Couplings of the quick-acting type with fluid cut-off means
    • F16L37/30—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings
    • F16L37/32—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied
    • F16L37/34—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied at least one of the lift valves being of the sleeve type, i.e. a sleeve is telescoped over an inner cylindrical wall
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/28—Couplings of the quick-acting type with fluid cut-off means
    • F16L37/30—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings
    • F16L37/32—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied
    • F16L37/35—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied at least one of the valves having an axial bore

Definitions

  • the present invention relates to the technical field of connectors, and more particularly, to a fluid connector and a sealing structure.
  • the existing fluid connectors are generally sealed in the form of a sealing ring provided on the telescopic rod, and impurities are easily accumulated in the gap of the sealing ring, resulting in the failure of the sealing of the connector and the leakage of fluid.
  • the purpose of the present invention is to provide a sealing structure to improve the sealing ability of the fluid connector; the present invention also provides a fluid connector.
  • the present invention provides the following technical solutions:
  • a sealing structure for a fluid connector comprising a first sealing ring and a first sleeve, the first sleeve is arranged inside the fluid connector, and the inside of the first sleeve is hollow to form a first fluid A channel, the first sealing ring is arranged on the inner wall surface of the first sleeve for sealing and conducting the first fluid channel.
  • a valve core is provided in the first sleeve, the valve core is slidably arranged in the first sleeve, and the outer circumference of the valve core is connected to the first sealing ring A sealing connection closes the first fluid channel.
  • the sealing structure further comprises a second sealing ring and a first valve sleeve
  • the first valve sleeve is hollow inside to form a second fluid channel and is arranged inside the fluid connector
  • the first valve sleeve is connected with the first sleeve
  • the second sealing ring is arranged on the inner wall surface of the first valve sleeve for sealing and conducting the second fluid passage.
  • the sealing structure further includes a third sealing ring and a valve stem
  • the valve stem is hollow inside and is slidably arranged in the first valve sleeve.
  • the valve stem is also provided with a fluid through hole connecting its outer circumference to the second fluid channel, the second sealing ring and the third sealing ring are both arranged on the inner wall surface of the first valve sleeve, and are The second sealing ring and the third sealing ring are respectively located on both sides of the fluid passage hole in the axial direction of the valve stem.
  • the sealing structure further comprises a fourth sealing ring and a second sleeve, the first valve sleeve is slidably arranged in the second sleeve, and the fourth sealing ring is arranged in a sealed manner between the second sleeve and the first valve sleeve.
  • the sealing structure there are a plurality of the fourth sealing rings, and the plurality of the fourth sealing rings are arranged at intervals along the axial direction of the second sleeve.
  • the sealing structure includes a first pressing spring, the first pressing spring is provided in the first sleeve and one end is connected with the valve core, so that the valve The core remains in sealing connection with the first sealing ring.
  • the sealing structure further comprises a second pressing spring
  • the second pressing spring is arranged in the first valve sleeve and is sleeved on the outer periphery of the valve stem, and one end of the second pressing spring is connected with the first valve sleeve, so that the first valve The sleeve is kept in sealing connection with the valve stem through the second sealing ring.
  • a fluid connector has the sealing structure as described above.
  • a fluid connector the fluid connector includes a male end and a female end that are detachably connected, the male end includes a first sleeve, a first sealing ring and a valve core arranged in the first sleeve,
  • the female end includes a second sleeve, a first valve sleeve and a valve stem, and the first valve sleeve is slidably arranged between the second sleeve and the valve stem;
  • the inside of the first sleeve is hollow to form a first fluid channel
  • the first sealing ring is arranged on the inner wall surface of the first sleeve
  • the valve core is slidably arranged in the first fluid channel
  • the outer periphery of the valve core is sealingly connected with the first sealing ring;
  • valve stem The inside of the valve stem is hollow with a second fluid channel, the valve stem is provided with a fluid through hole connecting the outer periphery of the valve stem to the second fluid channel, and the second sealing ring is arranged in the first valve sleeve a wall surface for sealing the second fluid passage;
  • valve stem when the male end and the female end are connected, the valve stem can push the valve core to separate from the first sealing ring, the valve stem is inserted into the first sleeve and the fluid through hole is at least A portion is located within the first sleeve.
  • the valve stem when the male end and the female end are connected, the valve stem can push the valve core to separate from the first sealing ring, and the valve stem is inserted into the first sleeve the fluid passage hole is located in the first sleeve, and the first sealing ring is located on the side of the fluid passage hole away from the valve core and is in sealing connection with the valve stem.
  • the end faces of the contact end of the valve core and the valve stem have the same shape and the outer circumferences are arranged with equal outer diameters.
  • the female end further comprises a locking sleeve, a locking steel ball and a third pressing spring
  • the locking sleeve is sleeved with the second sleeve
  • the second An accommodating hole for placing locking steel balls is formed on the outer side wall of one end of the sleeve connected to the female end
  • the third pressing spring is arranged between the second sleeve and the locking sleeve and has one end abut against the locking sleeve
  • the locking sleeve can slide between the first position and the second position along the axial direction of the second sleeve, when the locking sleeve is in the first position, the locking sleeve The cylinder presses the locking steel ball into the accommodating hole, and when the locking sleeve is in the second position, the locking steel ball can partially extend out of the locking sleeve and the second sleeve between the barrels.
  • the outer surfaces of the valve core and the valve stem are coated with Teflon.
  • the sealing structure provided by the present invention is used for a fluid connector, comprising a first sealing ring and a first sleeve, the first sleeve is arranged inside the fluid connector, and the first inner sleeve is hollow to form a first fluid channel, and the first sleeve is A sealing ring is arranged on the inner wall surface of the first sleeve for sealing and conducting the first fluid passage.
  • the fluid connector communicates with the fluid pipeline, a first sleeve is arranged in the fluid connector, and a hollow first fluid channel is arranged inside the first sleeve, and the first fluid channel is opened or closed by the first sealing ring in the first sleeve,
  • the first sealing ring in the fluid connector to cooperate with the first sleeve to conduct and seal the flow path
  • the structure of the first sealing ring is always in close contact with the inner wall of the first sleeve during the fluid circulation or disconnection process, so as to avoid fluid leakage from the inner wall of the first sleeve and ensure the sealing ability.
  • Fig. 1 is the structural schematic diagram of the initial state of the fluid connector provided by the application
  • FIG. 2 is a schematic structural diagram of the working state of the fluid connector provided by the present application.
  • FIG. 1 is a schematic structural diagram of the initial state of the fluid connector provided by the application
  • FIG. 2 is a structural schematic diagram of the working state of the fluid connector provided by the application.
  • the present embodiment provides a sealing structure for a fluid connector, which may include a first sealing ring 13 and a first sleeve 11.
  • the first sleeve 11 is disposed inside the fluid connector, and the interior of the first sleeve 11 is hollow
  • a first fluid channel (not numbered in the figure) is formed, and a first sealing ring 13 is provided on the inner wall surface of the first sleeve 11 for sealing and conducting the first fluid channel.
  • the first fluid channel is a path through which fluid passes through the inner cavity of the first sleeve 11 .
  • the fluid connector communicates with the fluid pipeline, a first sleeve 11 is arranged in the fluid connector, and a hollow first fluid channel is arranged inside the first sleeve 11, through which the first sealing ring 13 is used for the first sleeve 11 .
  • the opening or closing of the fluid channel realizes the sealing and conduction of the first fluid channel, so as to realize the connection or disconnection function of the fluid connector to different flow paths.
  • the cylinder 11 cooperates with the structure of conducting and sealing the flow path, and the first sealing ring 13 always ensures close contact with the inner wall surface of the first sleeve 11 during the fluid circulation or disconnection process, so as to avoid the generation of fluid by the inner wall surface of the first sleeve 11 leakage, to ensure the sealing performance.
  • the first sealing ring 13 may be configured as an elastic deformation structure that fills the inner space of the first sleeve 11 by the circumferential inner radial deformation.
  • the first sealing ring 13 is subjected to fluid pressure on the axial side of the first sleeve 11, and the first sealing ring 13 is squeezed by the fluid pressure. After the pressure exceeds a predetermined pressure value, the fluid squeezes the first sealing ring 13 along the edge.
  • the radial deformation forms an intermediate channel to realize the conduction of the first fluid channel.
  • the elastic deformation structure can be a porous elastic film composed of high molecular polymers or an elastic microvalve structure.
  • the first sealing ring 13 may be configured to deform and conduct the first fluid channel when the bearing pressure exceeds 0.35 MPa, otherwise it will be in a sealed and filled structure.
  • a valve core 12 may be provided in the first sleeve 11 , the valve core 12 is slidably arranged in the first sleeve 11 , and the outer circumference of the valve core 12 is sealingly connected with the first sealing ring 13 to seal first fluid channel.
  • the valve core 12 can block and open the first fluid channel inside the first sleeve 11 by sliding. When the valve core 12 is sealingly connected with the first sealing ring 13 , the fluid flow is cut off to achieve blocking. After the valve core 12 slides away from the first sealing ring 13, the first fluid channel in the first sleeve 11 is connected.
  • the sealing structure may further include a second sealing ring 231 and a first valve sleeve 11.
  • the inside of the first valve sleeve 11 is hollow to form a second fluid channel and is disposed inside the fluid connector, and the first valve sleeve 11 is hollow.
  • 11 is connected with the first sleeve 11, and the second sealing ring 231 is arranged on the inner wall surface of the first valve sleeve 23 for sealing and conducting the second fluid passage.
  • the second sealing ring 231 may also have the same elastic deformation structure as the first sealing ring 13 .
  • the sealing structure may further include a third sealing ring 232 and a valve stem 22 .
  • the valve stem 22 is hollow inside and is slidably arranged in the first valve sleeve 23 .
  • the valve stem 22 is also provided with a fluid through hole 25 connecting its outer periphery to the second fluid channel.
  • the second sealing ring 231 and the third sealing ring 232 are respectively located on both sides of the fluid passage hole 25 .
  • the conduction and closure between the first fluid channel and the second fluid channel are accomplished by the abutment and separation of the valve core 12 and the valve stem 22.
  • the valve stem 22 and the valve core 12 are abutted, and the valve core 12 is pushed in the first set.
  • the cylinder 11 slides.
  • the first sleeve 11 and the first valve sleeve 23 abut against each other, and the valve stem 22 slides relative to the first sleeve 11 and the first valve sleeve 23 .
  • the valve stem 22 is a hollow structure, and its outer periphery is in sliding contact with the first sealing ring 13 , the second sealing ring 231 and the third sealing ring 232 during the sliding process to ensure that its outer periphery is in contact with the first sleeve 11 and the first valve sleeve 23 . tightness between.
  • the end of the valve stem 22 is provided with a fluid through hole 25. When the second fluid channel is closed, the fluid through hole 25 is located between the second sealing ring 231 and the third sealing ring 232.
  • the inner wall surface of the first valve sleeve 23 and the valve stem A tightly fitting sealing structure is formed between the outer peripheries of 22.
  • the first sealing ring 13 is located on the side of the fluid passage hole 25 away from the valve core 12, It is connected with the outer circumference of the valve stem 22 to ensure the sealing between the outer circumference of the valve stem 22 and the first sleeve 11 and the first valve sleeve 23 .
  • the sealing structure further includes a fourth sealing ring 26 and a second sleeve 21 , the first valve sleeve 23 is slidably arranged in the second sleeve 21 , and the fourth sealing ring 26 is sealingly arranged in the second sleeve 21 and the first valve sleeve 23 between.
  • the first sleeve 11 and the first valve sleeve 23 slide in the axial direction of the second sleeve 21, considering the change of the sliding position of the first valve sleeve 23 on the valve stem 22, as well as the first valve sleeve 23 and the first sleeve 11
  • a plurality of fourth sealing rings 26 are provided and arranged at intervals along the axial direction of the second sleeve 21 to ensure that the connection position of the first sleeve 11 and the first valve sleeve 23 is always located in the sliding process. Between the plurality of fourth sealing rings 26 , the problem of fluid leakage between the first valve sleeve 23 and the first sleeve 11 is avoided.
  • the sealing structure may include a first pressing spring 14, the first pressing spring 14 is arranged in the first sleeve 11 and one end is connected with the valve core 12, so that the valve core 12 can be The first sleeve 11 maintains a sealing connection with the first sealing ring 13 . It can be understood that through the elastic deformation of the first pressing spring 14, the valve core 12 can slide in the first sleeve 11 to realize the connection and separation with the first sealing ring 13. When the valve core 12 is connected to the first sealing ring 13 When sealingly connected, the first fluid channel is closed. When the valve core 12 is separated from the first sealing ring 13, the first fluid channel can be connected, or the first fluid channel can be connected according to the specific structure of the sealing ring.
  • the sealing ring can be a thin-film microvalve composed of high-molecular-weight polymers as described above, and the conduction and closure of the channel are controlled by indicators such as pressure.
  • the valve core 12 is separated from the first sealing ring 13, if the inner If the indicator of , does not reach the preset value, the first fluid channel is still in a closed state.
  • the sealing structure may further include a second pressing spring 28 , the second pressing spring 28 is arranged in the first valve sleeve 23 and is sleeved on the outer periphery of the valve stem 22 , and the second pressing spring 28 is One end of 28 is connected with the first valve sleeve 23, so that the first valve sleeve 23 and the valve stem 22 are kept in a sealing connection through the second sealing ring.
  • the embodiment of the present application also provides a fluid connector, and the fluid connector has the sealing structure in the above-mentioned embodiments.
  • the beneficial effect of the fluid connector is brought about by the sealing structure, please refer to the above embodiments.
  • the fluid connector includes a male end 1 and a female end 2 that are detachably connected.
  • the male end 1 includes a first sleeve 11 and a valve core 12.
  • the detachable connection includes Cartridge fit, docking lock, etc.
  • the female end 2 includes a second sleeve 21 and a valve stem 22 , and a slidingly arranged first valve sleeve 23 is provided between the second sleeve 21 and the valve stem 22 .
  • the inside of the first sleeve 11 is hollow to form a first fluid channel, and the first sealing ring 13 is arranged on the inner wall surface of the first sleeve 11 .
  • the cartridge 11 is sealed.
  • the valve stem 22 has a valve stem end that abuts against the valve core 12 , and an outer circumference of the valve stem that slides and presses against the first sealing ring 13 ;
  • the part is provided with a fluid passage hole 25 which communicates its outer periphery to the second fluid passage 24 .
  • the first sleeve 11 extends into the second sleeve 21 and is in contact with the first valve sleeve 23. At the same time, the valve stem 22 is in contact with the valve core 12.
  • valve stem 22 With the insertion of the male end 1 and the female end 2 into place, the valve stem 22 will The valve core 12 is pushed into the first sleeve 11 , and the end of the valve stem 22 extends into the first sleeve 11 at the same time, connecting the second fluid channel 24 with the first fluid channel inside the first sleeve 11 .
  • the first sealing ring 13 on the first sleeve 11 is press-fitted with the outer periphery of the valve core 12 in the initial state.
  • it is always pressed against the outer periphery of the valve stem 22 to maintain the sliding press-fit state. , so that during the whole process of pushing the valve stem 22 and the valve core 12 , the fluid in the first sleeve 11 is blocked, so as to avoid leakage and improve the sealing ability.
  • the second sealing ring and the third sealing ring are the second sealing ring 231 and the third sealing ring 232 arranged at an axial interval between the first valve sleeve 23 and the valve stem 22 along the valve stem.
  • the outer circumference of the rod 22 is press-fitted with the second sealing ring 231 and the third sealing ring 232 , and the distance between the second sealing ring 231 and the third sealing ring 232 is greater than the length of the fluid passage hole 25 .
  • the first valve sleeve 23 abuts against the first sleeve 11 and is installed with the male end 1 , and the first valve sleeve 23 is pressed into the inside of the female end 2 .
  • the valve stem 22 when the male end 1 and the female end 2 are connected, the valve stem 22 can push the valve core 12 to separate from the first sealing ring 13, the valve stem 22 is inserted into the first sleeve 11 and the fluid passage hole 25 is at least partially located in the first sealing ring 13. Inside a sleeve 11 so that the first fluid channel communicates with the second fluid channel 24 . The valve stem 22 pushes the valve core 12 to separate from the first sealing ring, and the valve core 12 retracts into the male end 1. In theory, the valve stem 22 partially extends into the first sealing ring 13 and falls between the fluid through holes 25. The fluid can flow into the inside of the valve stem 22 through the gap between the first sleeve 11 and the valve stem 22, so as to conduct the fluid connector.
  • valve stem 22 when the male end 1 and the female end 2 are connected, the valve stem 22 can push the valve core 12 to separate from the first sealing ring 13, and the valve stem 22 is inserted into the first sleeve 11 so that the fluid passage hole 25 is located at Inside the first sleeve 11 , the first sealing ring 13 is located on the side of the fluid passage hole 25 away from the valve core 12 and is sealingly connected with the valve stem 22 .
  • valve stem 22 is in abutment with the valve core 12.
  • the valve core 12 With the insertion of the male end 1 and the female end 2 into place, the valve core 12 is pressed into the first sleeve 11, and the first sealing ring 13 is arranged in the first sleeve.
  • the first sealing ring 13 falls within the length of the fluid passage hole 25, which may cause the fluid to leak through the fluid passage hole 25 and cross the first sealing ring. 13, flows into the outer circumference of the valve stem 22.
  • a second sealing ring 231 and a third sealing ring 232 are arranged between the first valve sleeve 23 and the valve stem 22 along the axial direction of the valve stem, and the distance between the two is controlled to be greater than the length of the fluid through hole 25, then the valve stem 22 and the valve stem 22 are connected to each other.
  • the valve core 12 abuts, the first sealing ring 13 , the second sealing ring 231 and the third sealing ring 232 are all pressed against the outer periphery of the valve stem 22 , thereby effectively avoiding the leakage of the fluid flowing out through the fluid passage hole 25 .
  • the length of the second sealing ring 231 and the third sealing ring 232 along the axial direction of the valve stem is greater than the length of the fluid through hole 25.
  • the fourth sealing ring 26 may be arranged on the inner ring of the second sleeve 21 , and the fourth sealing ring 26 is slidingly and press-fitted with the outer ring of the first valve sleeve 23 .
  • the first sleeve 11 abuts against the first valve sleeve 23, and is provided on the inner wall surface of the second sleeve 21 with a fourth sealing ring 26.
  • the fourth sealing ring 26 slides and press-fits.
  • the fourth sealing ring 26 restricts the fluid between the abutting end surfaces and the fourth sealing ring 26, so that the first valve sleeve 23 can be removed from the first valve sleeve 23. tightness of the ring.
  • the fourth sealing ring 26 may include a plurality of sealing rings arranged at intervals along the axial direction of the second sleeve 21 , and the plurality of fourth sealing rings 26 are connected to the first sleeve 11 and the first valve sleeve
  • the perimeter of 23 has a sliding press fit.
  • the first sleeve 11 is connected with the first valve sleeve 23, and in the process of sliding in the second sleeve 21, the fluid flowing from the abutting end surfaces of the first sleeve 11 and the first valve sleeve 23 will also generate
  • the fourth sealing ring 26 is provided to include a plurality of rings and are arranged at intervals along the inner ring of the second sleeve 21, and the first sleeve 11 and the first valve sleeve 23 slide against each other During the process, the sliding positions of the abutting end faces of the two are located between the plurality of fourth sealing rings 26, that is to prevent the fluid from flowing out from the male end 1 side, and also avoid flowing into the second sleeve 21 on the female end 2 side, Further improve sealing.
  • Both the inner ring and the outer ring of the first valve sleeve 23 have sealing rings, and during the sliding process of the first valve sleeve 23, the inner ring and the outer periphery of the first valve sleeve 23 can achieve stable sealing.
  • On the side of the female end 2 fluid is prevented from entering the spring installation cavity 30 of the first valve sleeve 23 .
  • the direct overflow of the fluid is avoided at the male end 1, and the sealing performance is improved as a whole.
  • valve core 12 and the valve stem 22 may have the same shape of the end faces of the contact ends, and the outer circumferences may be arranged with the same outer diameter.
  • the outer circumferences of the valve core 12 and the valve stem 22 are set to have an equal outer diameter structure, then the valve stem 22 is pressed into the first sleeve 11, the outer circumference of the valve stem 22 and the inner ring of the first sleeve 11 closely fit, and the first The sealing pressure of the sealing ring 13 is the same as that of the valve core 12 and the valve stem 22 to ensure the consistency of the overall structure.
  • the gap between the outer periphery of the valve core 12 and the inner wall of the first sleeve 11 is 0.02-0.035 mm.
  • the valve stem 22 and the inner wall of the first sleeve 11 also have a sealing gap of 0.02-0.035 mm. Impurities inside the fluid cannot flow into the first sealing ring 13 through the inner wall surface of the first sleeve 11 , which improves the long-term safety of the first sealing ring 13 .
  • the first sealing ring 13 can be arranged on the inner wall surface of the first sleeve 11 , it is always kept pressed against the outer periphery of the valve core 12 or the valve stem 22 .
  • the inner wall surface of the first sleeve 11 is A gap for fluid to pass through is formed with the outer circumference of the valve core 12, and the fluid in the inner cavity of the first sleeve 11 enters the second fluid channel 24 through the fluid through hole 25 at the end of the valve stem 22; when the valve stem 22 is reset, the valve core 12 Simultaneously reset to the inner wall surface of the first sleeve 11, and the first fluid channel and the second fluid channel 24 are respectively closed.
  • the direction of fluid flow may also be from the second fluid channel 24 to the first sleeve 11 through the fluid through hole 25 .
  • the male end 1 may further include a first pressing spring 14; the first pressing spring 14 acts on the valve core 12 and the first sleeve 11 to drive the valve core 12 to slide in the first direction .
  • the female end 2 further includes a second tightening spring 28; the second tightening spring 28 is sleeved on the valve stem 22 and acts on the first valve sleeve 23 and the second sleeve 21 to drive the second sleeve 21 Swipe in the second direction.
  • the valve core 12 is pressed into the first sleeve 11, and the first valve sleeve 23 is pressed into the second sleeve 21. Based on this, the first direction is the first top.
  • the direction in which the tightening spring 14 pushes the valve core 12 toward the opening of the first sleeve 11 is the initial position of the valve core 12; correspondingly, the second direction is that the second pressing spring 28 pushes the first valve sleeve 23 to extend The initial position of the opening of the second sleeve 21 .
  • the second sleeve 21 is provided with a locking steel ball 211 and a locking sleeve 27
  • the locking sleeve 27 is sleeved on the outer ring of the second sleeve 21
  • the locking sleeve 27 is provided with an accommodating The hole accommodates the locking steel ball 211
  • the female end 2 is also provided with a third pressing spring 29.
  • the third pressing spring 29 is elastically supported between the second sleeve 21 and the locking sleeve 27 for driving the locking sleeve 27 Slide to press or release the locking steel ball 211.
  • the locking sleeve 27 can slide between the first position and the second position along the axial direction of the second sleeve 21.
  • the first position is shown in FIG. 1 .
  • the locking sleeve 27 presses the locking steel ball 211 into the accommodating hole, when the locking sleeve 27 is in the second position, as shown in FIG.
  • the male end 1 and the female end 2 are locked.
  • a first support step 121 for supporting the first pressing spring 14 protrudes from the pressing end of the valve core 12 .
  • the pressing end of the first valve sleeve 23 is provided with a second supporting step 233 for supporting the second pressing spring 28 .
  • the valve core 12 is initially positioned at the end of the first sleeve 11, and the inner cavity of the first sleeve 11 is an inner cavity provided with a first pressing spring 14.
  • the first pressing spring 14 abuts against the valve core 12 to provide Its retractable and reset elastic force, the inner diameter of the inner cavity of the first sleeve 11 is larger than the outer diameter of the sealing structure to the valve core 12 .
  • the first pressing spring 14 of the valve core 12 may be installed at one end of the first supporting step 121 structure with a tapered outer diameter.
  • the second tightening spring 28 can be sheathed on the outer circumference of the valve stem 22 .
  • one end of the first valve sleeve 23 is provided with a second supporting step 233 arranged around the circumference of the valve stem 22 , and the second pressing spring 28 is sheathed in the annular cavity formed by the second supporting step 233 .
  • the inner wall of the second sleeve 21 is provided with an annular groove, and the outer periphery of the first valve sleeve 23 is protruded with a hanging ear 234.
  • the outer diameter of the hanging ear 234 is larger than the outer diameter of the first valve sleeve 23.
  • the inner sliding and the limiting position limit the extended position where the second pressing spring 28 pushes the first valve sleeve 23 .
  • the protruding end of the first valve sleeve 21 is flush with the end of the valve stem 22 .
  • the locking sleeve 27 avoids the locking steel ball 211. At this time, the locking sleeve 27 compresses the third pressing spring 29, exposing the locking sleeve 27 to the locking steel ball.
  • the locking steel ball 211 is pressed and extruded radially outward, and the outer ring of the first sleeve 11 is closely fitted with the inner wall of the second sleeve 21; the male end 1 and the female end 2 are inserted into
  • the third pressing spring 29 pushes the locking sleeve 27, presses the locking steel ball 211 radially inward, and falls into the corresponding groove of the outer ring of the first sleeve 11, ensuring that the male end 1 and the female End 2 plug-in structure is stable.
  • the outer surfaces of the valve core 12 and the valve stem 22 are coated with Teflon.
  • Teflon is preferably coated on the outer surfaces of the valve core 12 and the valve stem 22 by electroplating, so as to eliminate the adhesion of impurities in the fluid on the surfaces of the two.
  • each part of the male end 1 and the female end 2 that is in contact with the fluid is coated with Teflon, which further avoids the adhesion of impurities and ensures the stability of the long-term working structure.
  • the valve stem 22 By using the first sealing ring 13 , the second sealing ring 231 , the third sealing ring 232 and the fourth sealing ring 26 in the fluid connector, and the valve stem 22 telescopically push the valve core 12 to act to open the first fluid channel, the valve stem 22
  • the hollow structure at the protruding end conducts the first fluid channel and the second fluid, and the outer circumference of the valve stem 22 is closely fitted with the inner wall of the first sleeve 11 to avoid accumulation of impurities and ensure the sealing structure of the male end 1 and the female end 2 of the fluid connector Return it smoothly to avoid the failure of the fluid connector seal, reduce fluid injection, cause circuit short circuit, and burn the chip.
  • the radial deformation of the multiple sealing rings is used to closely fit the internal structure of the fluid connector, so as to avoid the accumulation of impurities caused by the inflow of fluid and reduce the sealing reliability.
  • Terminal 1 and female terminal 2 leak liquid, which effectively avoids the occurrence of circuit failure.

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Abstract

一种流体连接器及密封结构，包括第一密封环（13）、第一套筒（11），第一套筒（11）设置在流体连接器内部，并且第一套筒（11）内部中空形成第一流体通道，第一密封环（13）设置在第一套筒（11）内壁面，用于第一流体通道的密封和导通。

Description

流体连接器及密封结构
本申请要求于2021年02月07日提交中国专利局、申请号为202120357233.2、申请名称为“流体连接器及密封结构”上述中国专利申请的优先权，其全部内容通过引用结合在上述申请中。
技术领域
本发明涉及连接器技术领域，更具体地说，涉及一种流体连接器及密封结构。
背景技术
现有的流体连接器普遍采用伸缩杆上设置密封圈的形式进行密封，密封圈缝隙容易堆积杂质，造成连接器密封失效、流体泄露。
这里，应当指出的是，本部分中所提供的技术内容旨在有助于本领域技术人员对本发明的理解，而不一定构成现有技术。
发明内容
有鉴于此,本发明的目的是提供一种密封结构，提高流体连接器的密封能力；本发明还提供了一种流体连接器。
为了达到上述目的，本发明提供如下技术方案：
一种密封结构，用于流体连接器，包括第一密封环、第一套筒，所述第一套筒设置在所述流体连接器内部，并且所述第一套筒内部中空形成第一流体通道，所述第一密封环设置在所述第一套筒内壁面，用于所述第一流体通道的密封和导通。
优选地，在上述密封结构中，所述第一套筒内设置有阀芯，所述阀芯滑动布置在所述第一套筒内，并且所述阀芯的外周与所述第一密封环密封连接以封闭所述第一流体通道。
优选地，在上述密封结构中，所述密封结构还包括第二密封环、第一阀套，所述第一阀套内部中空形成第二流体通道并设置在所述流体连接器内部，所述第一阀套与所述第一套筒连接，所述第二密封环设置在所述第一阀套内壁面，用于密封和导通所述第二流体通道。
优选地，在上述密封结构中，所述密封结构还包括第三密封环、阀杆，所述阀杆内部中空，并且滑动设置在所述第一阀套内。所述阀杆上还设有连通其外周至所述第二流体通道的流体过孔，所述第二密封环和所述第三密封环均设置在所述第一阀套内壁面，且在沿所述阀杆的轴向方向上所述第二密封环和所述第三密封环分别位于所述流体过孔的两侧。
优选地，在上述密封结构中，所述密封结构还包括第四密封环、第二套筒，所述第一阀套滑动设置在所述第二套筒内，所述第四密封环密封设置于所述第二套筒和所述第一阀套之间。
优选地，在上述密封结构中，所述第四密封环具有多个，多个所述第四密封环沿所述第二套筒的轴向间隔布置。
优选地，在上述密封结构中，所述密封结构包括第一顶紧弹簧，所述第一顶紧弹簧设于所述第一套筒内且一端与所述阀芯连接，以使所述阀芯与所述第一密封环保持密封连接。
优选地，在上述密封结构中，所述密封结构还包括第二顶紧弹簧；
所述第二顶紧弹簧设于所述第一阀套内且套设在所述阀杆外周，所述第二顶紧弹簧一端与所述第一阀套连接，以使所述第一阀套与所述阀杆通过所述第二密封环保持密封连接。
一种流体连接器，具有如上任一所述密封结构。
一种流体连接器，所述流体连接器包括可拆卸连接的公端和母端，所述公端包括第一套筒、第一密封环和设于所述第一套筒内的阀芯，所述母端包括第二套筒、第一阀套和阀杆，所述第一阀套滑动布置于所述第二套筒和所述阀杆之间；
所述第一套筒内部中空形成第一流体通道，所述第一密封环设置在所述第一套筒内壁面，所述阀芯可滑动地设于所述第一流体通道内且所述阀芯的外周与所述第一密封环密封连接；
所述阀杆内部中空设有第二流体通道，所述阀杆上设有连通其外周至所述第二流体通道的流体过孔，所述第二密封环设置在所述第一阀套内壁面，用于密封所述第二流体通道；
其中，当所述公端和母端连接时，所述阀杆可推动所述阀芯与所述第一密封环分离，所述阀杆插入所述第一套筒且所述流体过孔至少部分位于所述第 一套筒内。
优选地，在上述流体连接器中，当所述公端和母端连接时，所述阀杆可推动所述阀芯与所述第一密封环分离，所述阀杆插入所述第一套筒以使所述流体过孔位于所述第一套筒内，且所述第一密封环位于所述流体过孔远离所述阀芯的一侧并与所述阀杆密封连接。
优选地，在上述流体连接器中，所述阀芯和所述阀杆相接触一端的端面形状相同且外周等外径布置。
优选地，在上述流体连接器中，所述母端还包括锁紧套筒、锁紧钢珠以及第三顶紧弹簧，所述锁紧套筒套设所述第二套筒，所述第二套筒与所述母端连接的一端外侧壁上形成有用于放置锁紧钢珠的容纳孔，所述第三顶紧弹簧设于所述第二套筒和所述锁紧套筒之间且一端与所述锁紧套筒相抵；
其中，所述锁紧套筒可沿所述第二套筒的轴向方向在第一位置与第二位置之间滑动，当所述锁紧套筒处于第一位置时，所述锁紧套筒将所述锁紧钢珠压紧于所述容纳孔内，当所述锁紧套筒处于第二位置时，所述锁紧钢珠可部分伸出所述锁紧套筒与所述第二套筒之间。
优选地，在上述流体连接器中，所述阀芯和所述阀杆的外表面均涂覆有铁氟龙。
本发明提供的密封结构，用于流体连接器，包括第一密封环、第一套筒，第一套筒设置在流体连接器内部，并且第一内套筒内部中空形成第一流体通道，第一密封环设置在第一套筒内壁面，用于第一流体通道的密封和导通。流体连接器联通流体管路，流体连接器内设有第一套筒，第一套筒内部设有中空的第一流体通道，通过其内第一密封环对第一流体通道的打开或关闭，实现第一流体通道的密封和导通，从而实现流体连接器对不同流路的连接或断开功能，通过在流体连接器内设置第一密封环与第一套筒配合导通和密封流路的结构，第一密封环对第一套筒的内壁面在流体流通或断开过程始终保证紧密接触，避免流体由第一套筒的内壁面产生泄露，保证密封性能力。
附图说明
通过以下参照附图对本发明实施例的描述，本发明的上述以及其它目的、特征和优点将更为清楚，在附图中：
图1为本申请提供的流体连接器初始状态的结构示意图；
图2为本申请提供的流体连接器工作状态的结构示意图。
具体实施方式
以下基于实施例对本发明进行描述，但是本发明并不仅仅限于这些实施例。
如图1和图2所示，图1为本申请提供的流体连接器初始状态的结构示意图；图2为本申请提供的流体连接器工作状态的结构示意图。
本实施例提供了一种密封结构，用于流体连接器，可以包括第一密封环13、第一套筒11，第一套筒11设置在流体连接器内部，并且第一套筒11内部中空形成第一流体通道(图中未标号)，第一密封环13设置在第一套筒11内壁面，用于第一流体通道的密封和导通。具体的，第一流体通道为第一套筒11内腔流体通过的路径。可以理解，流体连接器联通流体管路，流体连接器内设有第一套筒11，第一套筒11内部设有中空的第一流体通道，通过其内第一密封环13，对第一流体通道的打开或关闭，实现第一流体通道的密封和导通，从而实现流体连接器对不同流路的连接或断开功能，通过在流体连接器内设置第一密封环13与第一套筒11配合导通和密封流路的结构，第一密封环13对第一套筒11的内壁面在流体流通或断开过程始终保证紧密接触，避免流体由第一套筒11的内壁面产生泄露，保证密封性能。
第一密封环13可以设置为对第一套筒11内部空间由周向向内部径向形变填充的弹性形变结构。第一密封环13在第一套筒11轴向的一侧受到流体压力，由流体压力对第一密封环13进行挤压，在压力超过预定压力值后，流体挤压第一密封环13沿径向形变形成中间通道，实现第一流体通道的导通。例如，弹性形变结构可以是高分子聚合物组成的多孔弹性薄膜或弹性微阀结构。具体地，可以设置第一密封环13在承压压力超过0.35MPa的情形下形变导通第一流体通道，否则呈密闭填充的结构。
在本案一具体实施例中，第一套筒11内可以设置有阀芯12，阀芯12滑动布置在第一套筒11内，并且阀芯12的外周与第一密封环13密封连接以封闭第一流体通道。阀芯12通过滑动实现对第一套筒11内部第一流体通道的封堵和打开，阀芯12与第一密封环13密封连接时，流体流通被隔断，实现封堵。 阀芯12滑动远离第一密封环13后，第一套筒11内的第一流体通道导通。
在本案一具体实施例中，密封结构可以还包括第二密封环231、第一阀套11，第一阀套11内部中空形成第二流体通道并设置在流体连接器内部，并且第一阀套11与第一套筒11连接，第二密封环231设置在第一阀套23内壁面，用于密封和导通第二流体通道。可以理解，第二密封环231也可以是与第一密封环13一样的弹性形变结构。
密封结构可以还包括第三密封环232、阀杆22，阀杆22内部中空并且滑动设置在第一阀套23内。阀杆22上还设有连通其外周至第二流体通道的流体过孔25，第二密封环231和第三密封环232均设置在第一阀套23内壁面，且在沿阀杆22的轴向方向上第二密封环231和第三密封环232分别位于流体过孔25的两侧。
第一流体通道与第二流体通道之间的导通和封闭由阀芯12与阀杆22的相抵和分开完成，具体的，阀杆22和阀芯12相抵，推动阀芯12在第一套筒11内滑动，此时，第一套筒11与第一阀套23相抵，阀杆22在第一套筒11内和第一阀套23内产生相对滑移。阀杆22为中空结构，其滑移过程中外周与第一密封环13、第二密封环231和第三密封环232为滑动接触，保证其外周与第一套筒11和第一阀套23之间的密封性。阀杆22的端部开设流体过孔25，当第二流体通道封闭时，流体过孔25位于第二密封环231和第三密封环232之间，第一阀套23的内壁面和阀杆22的外周之间形成紧密贴合的密封结构，当第一流体通道与第二通道导通时，所述第一密封环13位于所述流体过孔25远离所述阀芯12的一侧，并与所述阀杆22外周连接，保证阀杆22外周与第一套筒11和第一阀套23之间的密封性。
密封结构还包括第四密封环26、第二套筒21，第一阀套23滑动设置在第二套筒21内，第四密封环26密封设置于第二套筒21和第一阀套23之间。第一套筒11和第一阀套23在第二套筒21的轴向滑动，考虑第一阀套23在阀杆22上的滑动位置变化，以及第一阀套23和第一套筒11连接位置的密封性能，设置第四密封环26具有多个，并沿第二套筒21的轴向间隔布置，保证第一套筒11和第一阀套23的连接位置在滑动过程中始终位于多个第四密封环26之间，避免第一阀套23和第一套筒11之间产生流体泄露的问题。
在本案一具体实施例中，密封结构可以包括第一顶紧弹簧14，第一顶紧 弹簧14设于第一套筒11内且一端与阀芯12连接，以使所述阀芯12可以在第一套筒11内与第一密封环13保持密封连接。可以理解，通过第一顶紧弹簧14的弹性形变，阀芯12可以在第一套筒11内进行滑动，实现与第一密封环13的连接和分离，当阀芯12与第一密封环13密封连接时，第一流体通道封闭，当阀芯12与第一密封环13分离时，第一流体通道可以是导通的，也可以是根据密封环的具体结构实现第一流体通道的导通和封闭，例如密封环可以是前文所述的高分子聚合物组成的薄膜微阀，通过压力等指标控制通道的导通与封闭，当阀芯12与第一密封环13分离时，若通道内的指标未达到预设值，则第一流体通道依旧是封闭的状态。
在本案一具体实施例中，密封结构可以还包括第二顶紧弹簧28，第二顶紧弹簧28设于第一阀套23内且套设在所述阀杆22外周，第二顶紧弹簧28一端与第一阀套23连接，以使所述第一阀套23与阀杆22通过所述第二密封环保持密封连接。
本案实施例还提供了一种流体连接器，该流体连接器具有上述实施例中的密封结构。由密封结构带来流体连接器的有益效果，请参照上述实施例。
本案一实施例提供另一种流体连接器，该流体连接器包括可拆卸连接的公端1和母端2，公端1包括第一套筒11和阀芯12，具体的，可拆卸连接包括插装配合、对接锁定等。
母端2包括第二套筒21和阀杆22，第二套筒21和阀杆22之间设有滑动布置的第一阀套23。
第一套筒11内部中空形成第一流体通道，第一密封环13为设于第一套筒11的内壁面，第一密封环13与阀芯12的外周压紧配合，以对第一套筒11进行密封。
阀杆22具有与阀芯12抵接配合的阀杆端部，与第一密封环13滑动压紧贴合的阀杆外周；阀杆22内部设有第二流体通道24，阀杆22的端部设有连通其外周至第二流体通道24的流体过孔25。第一套筒11伸入第二套筒21内，与第一阀套23相抵，同时阀杆22与阀芯12相抵，随公端1与母端2的插装入位，阀杆22将阀芯12推送至第一套筒11内，阀杆22的端部同时伸入第一套筒11内，连通第二流体通道24与第一套筒11内部的第一流体通道。第一套筒11上的第一密封环13在初始状态与阀芯12的外周压紧配合，在阀杆22 装入过程中，始终与阀杆22的外周压紧，保持滑动压紧配合状态，从而实现阀杆22和阀芯12推送的整个过程中，均对第一套筒11内的流体进行阻挡，避免泄漏，提高了密封能力。
在一种实施例中，第二密封环和第三密封环为在第一阀套23与阀杆22之间沿阀杆轴向间隔布置的第二密封环231和第三密封环232，阀杆22的外周与第二密封环231和第三密封环232压紧配合，第二密封环231和第三密封环232的间距大于流体过孔25的长度。第一阀套23与第一套筒11相抵，随公端1装入，第一阀套23被压入到母端2内部。
在本实施例中，公端1和母端2连接时，阀杆22可推动阀芯12与第一密封环13分离，阀杆22插入第一套筒11且流体过孔25至少部分位于第一套筒11内，以使第一流体通道与第二流体通道24连通。阀杆22推动阀芯12与第一密封环分离，阀芯12收回至公端1内，理论上，阀杆22部分的伸入至第一密封环13落入到流体过孔25之间，流体均可以由第一套筒11和阀杆22之间的间隙流入到阀杆22内部，从而导通流体连接器。
在另外一些实施例中，当公端1和母端2连接时，阀杆22可推动阀芯12与第一密封环13分离，阀杆22插入第一套筒11以使流体过孔25位于所述第一套筒11内，且所述第一密封环13位于流体过孔25远离阀芯12的一侧并与阀杆22密封连接。
进一步地，阀杆22与阀芯12相抵，随公端1和母端2的插装入位，阀芯12被压入到第一套筒11内，第一密封环13布置在第一套筒11的内壁面，考虑阀杆22的端部外周设置流体过孔25，第一密封环13落入流体过孔25的长度范围内，可能造成流体经流体过孔25泄漏越过第一密封环13，流入到阀杆22的外周。第一阀套23与阀杆22之间沿阀杆轴向设置有第二密封环231和第三密封环232，并控制二者的间距大于流体过孔25的长度，则在阀杆22与阀芯12抵接时，第一密封环13、第二密封环231和第三密封环232均压紧在阀杆22外周，从而有效避免经流体过孔25流出的流体泄漏情况。
同时，第二密封环231和第三密封环232的沿阀杆轴向方向的长度距离大于流体过孔25的长度，第一阀套23与阀杆22复位后，流体过孔25落入至二者之间，以避免阀杆22的第二流体通道24内流体经流体过孔25流出，避免母端2的流体泄漏，保证密封性。
在本案一具体实施例中，第四密封环26可以布置于第二套筒21的内圈，第四密封环26与第一阀套23的外圈滑动压紧配合。第一套筒11与第一阀套23抵接配合，设置在第二套筒21的内壁面第四密封环26，第一阀套23滑动过程中与第四密封环26滑动压紧配合，在第一套筒11和第一阀套23的抵接端面产生泄漏时，由第四密封环26将流体限制在上述抵接端面和第四密封环26之间，实现第一阀套23外圈的密封性。
在本案一具体实施例中，第四密封环26可以包括沿第二套筒21的轴向间隔布置的多条密封环，多条第四密封环26与第一套筒11和第一阀套23的外周滑动压紧配合。第一套筒11与第一阀套23连接，并在第二套筒21内滑移的过程中，由第一套筒11和第一阀套23的抵接端面流入的流体同样会产生由第一套筒11的外圈流出的情况，设置第四密封环26包括多条，并沿第二套筒21的内圈轴向间隔布置，第一套筒11和第一阀套23相互滑动过程中，二者的抵接端面的滑动位置位于多条第四密封环26之间，即避免流体由公端1一侧流出，也避免流入母端2一侧的第二套筒21内，进一步提高密封性。
第一阀套23的内圈和外圈均具有密封环，第一阀套23滑移过程中，其内圈和外周均可实现稳定密封。在母端2一侧避免流体进入第一阀套23的弹簧安装腔30内。在公端1避免流体的直接溢出，整体上提高了密封性。
在本案一具体实施例中，阀芯12和阀杆22可以是相接触一端的端面形状相同且外周等外径布置。阀芯12和阀杆22的外周设为等外径结构，则阀杆22压入到第一套筒11内，阀杆22的外周和第一套筒11的内圈紧密贴合，第一密封环13与阀芯12和阀杆22密封压力一致，保证整体结构一致性。
同时，优选设置阀芯12外周与第一套筒11的内壁间隙为0.02～0.035mm。对应的阀杆22装入后，阀杆22与第一套筒11的内壁同样具有0.02～0.035mm的密封间隙。流体内部的杂质将无法通过第一套筒11的内壁面流入到第一密封环13，提高第一密封环13长期使用的安全性。
进一步地，由于第一密封环13可以设置在第一套筒11的内壁面，并始终保持与阀芯12或阀杆22的外周压紧贴合。如图2所示，当公端1和母端2对接、第一套筒11内部的第一流体通道与阀杆22内部的第二流体通道24导通时，第一套筒11的内壁面与阀芯12的外周形成流体通过的间隙，第一套筒11的内腔流体经阀杆22端部的流体过孔25进入到第二流体通道24；当阀杆 22复位时，阀芯12同步复位至第一套筒11的内壁面，第一流体通道、第二流体通道24分别封闭。通过这样的设计，流体流过的通道内缝隙较少，减少了杂质的停留、堆积，实现了阀芯12的精确复位，进一步避免流体泄漏。可以理解，在其他实施例中，流体流动的方向也可以是由第二流体通道24经流体过孔25进入到第一套筒11。
在本案一具体实施例中，公端1可以还包括第一顶紧弹簧14；第一顶紧弹簧14作用于阀芯12和第一套筒11，用于驱使阀芯12朝第一方向滑动。
进一步地，母端2还包括第二顶紧弹簧28；第二顶紧弹簧28套装于阀杆22，并作用于第一阀套23和第二套筒21，用于驱使第二套筒21朝第二方向滑动。公端1和母端2插装过程中，阀芯12压入第一套筒11内，第一阀套23被压入到第二套筒21内，基于此，第一方向为第一顶紧弹簧14推送阀芯12朝向第一套筒11的开口位置伸出的方向，为阀芯12的初始位置；对应地，第二方向为第二顶紧弹簧28推送第一阀套23伸出第二套筒21开口的初始位置。
在本案一具体实施例中，第二套筒21上设置锁紧钢珠211和锁紧套筒27，锁紧套筒27套装在第二套筒21的外圈，锁紧套筒27上设置容纳孔容置锁紧钢珠211，母端2还设置第三顶紧弹簧29，第三顶紧弹簧29弹性支撑于第二套筒21和锁紧套筒27之间，用于驱使锁紧套筒27滑动压紧或释放锁紧钢珠211。
其中，锁紧套筒27可沿第二套筒21的轴向方向在第一位置与第二位置之间滑动，当锁紧套筒27处于第一位置时，如图1所示第一位置，锁紧套筒27将锁紧钢珠211压紧于容纳孔内，当锁紧套筒27处于第二位置时，如图2所示的第二位置，锁紧钢珠27可部分伸出锁紧套筒27与第二套筒21之间，用于锁紧公端1和母端2。
阀芯12的压入端伸出有支撑第一顶紧弹簧14的第一支撑台阶121。第一阀套23的压入端设有支撑第二顶紧弹簧28的第二支撑台阶233。阀芯12初始状态定位于第一套筒11的端部，第一套筒11的内腔为设置有第一顶紧弹簧14的内腔，第一顶紧弹簧14与阀芯12相抵，提供其伸缩复位弹力，第一套筒11的内腔内径大于其对阀芯12密封结构的外径。具体的，阀芯12的第一顶紧弹簧14可以安装在外径渐缩设置的第一支撑台阶121结构的一端。
第二顶紧弹簧28可以套装在阀杆22的外周。具体的，第一阀套23的一端设有围绕阀杆22的周向布置的第二支撑台阶233，第二顶紧弹簧28套装在第二支撑台阶233形成的环形腔内。第二套筒21的内壁设置环形槽，第一阀套23的外周突出设置挂装耳234，挂装耳234的外径大于第一阀套23的外径，由挂装耳234在环形槽内滑移和限位，对第二顶紧弹簧28推送第一阀套23的伸出位置进行限位。优选地，第一阀套21的伸出端与阀杆22的端部平齐。
公端1和母端2插装过程中，锁紧套筒27对锁紧钢珠211进行避让，此时锁紧套筒27压缩第三顶紧弹簧29，露出锁紧套筒27对锁紧钢珠211的避让端部，锁紧钢珠211受压沿径向向外挤出，第一套筒11的外圈与第二套筒21的内壁紧密贴合；公端1和母端2插装入位后，第三顶紧弹簧29推动锁紧套筒27，将锁紧钢珠211沿径向向内压入，落入到第一套筒11外圈对应的凹槽，保证公端1和母端2插装结构稳定。
在本案一具体实施例中，阀芯12和阀杆22的外表面均涂覆有铁氟龙。铁氟龙优选采用电镀涂覆在阀芯12和阀杆22的外表面，消除流体内杂质在二者表面的粘连。具体的，公端1和母端2内部与流体相接触的各个部件均涂覆铁氟龙，进一步避免杂质粘连，保证长期工作结构的稳定性。
通过在流体连接器采用第一密封环13、第二密封环231、第三密封环232和第四密封环26，以及阀杆22伸缩推动阀芯12动作开启第一流体通道，利用阀杆22伸出端中空结构导通第一流体通道和第二流体，阀杆22的外周与第一套筒11的内壁紧密贴合，避免堆积杂质，保证流体连接器公端1和母端2密封结构顺利回位，避免流体连接器密封失效，减少流体喷射，造成电路短路，芯片烧毁的情况。
流体连接器公端1和母端2回位后，利用多个密封环的径向形变对流体连接器内部结构紧密贴合，避免流体流入造成的杂质堆积产生密封可靠性降低的情况，避免公端1和母端2漏液，有效避免了电路故障的发生。
以上所述仅为本发明的优选实施例，并不用于限制本发明，对于本领域技术人员而言，本发明可以有各种改动和变化。凡在本发明的精神和原理之内所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (14)

  1. 一种密封结构，用于流体连接器，包括第一密封环、第一套筒，其特征在于，所述第一套筒设置在所述流体连接器内部，并且所述第一套筒内部中空形成第一流体通道，所述第一密封环设置在所述第一套筒内壁面，用于所述第一流体通道的密封和导通。
  2. 根据权利要求1所述的密封结构，其特征在于，所述第一套筒内设置有阀芯，所述阀芯滑动布置在所述第一套筒内，并且所述阀芯的外周与所述第一密封环密封连接以封闭所述第一流体通道。
  3. 根据权利要求2所述的密封结构，其特征在于，所述密封结构还包括第二密封环、第一阀套，所述第一阀套内部中空形成第二流体通道并设置在所述流体连接器内部，所述第一阀套与所述第一套筒连接，所述第二密封环设置在所述第一阀套内壁面，用于密封和导通所述第二流体通道。
  4. 根据权利要求3所述的密封结构，其特征在于，所述密封结构还包括第三密封环、阀杆，所述阀杆内部中空并且滑动设置在所述第一阀套内；所述阀杆上还设有连通其外周至所述第二流体通道的流体过孔，所述第二密封环和所述第三密封环均设置在所述第一阀套内壁面，且在沿所述阀杆的轴向方向上所述第二密封环和所述第三密封环分别位于所述流体过孔的两侧。
  5. 根据权利要求4所述的密封结构，其特征在于，所述密封结构还包括第四密封环、第二套筒，所述第一阀套滑动设置在所述第二套筒内，所述第四密封环密封设置于所述第二套筒和所述第一阀套之间。
  6. 根据权利要求5所述的密封结构，其特征在于，所述第四密封环具有多个，多个所述第四密封环沿所述第二套筒的轴向间隔布置。
  7. 根据权利要求2～6任一所述的密封结构，其特征在于，所述密封结构包括第一顶紧弹簧，所述第一顶紧弹簧设于所述第一套筒内且一端与所述阀芯连接，以使所述阀芯与所述第一密封环保持密封连接。
  8. 根据权利要求4所述的密封结构，其特征在于，所述密封结构还包括 第二顶紧弹簧；
    所述第二顶紧弹簧设于所述第一阀套内且套设在所述阀杆外周，所述第二顶紧弹簧一端与所述第一阀套连接，以使所述第一阀套与所述阀杆通过所述第二密封环保持密封连接。
  9. 一种流体连接器，具有如1～8任一所述密封结构。
  10. 一种流体连接器，其特征在于，所述流体连接器包括可拆卸连接的公端和母端，所述公端包括第一套筒、第一密封环和设于所述第一套筒内的阀芯，所述母端包括第二套筒、第一阀套和阀杆，所述第一阀套滑动布置于所述第二套筒和所述阀杆之间；
    所述第一套筒内部中空形成第一流体通道，所述第一密封环设置在所述第一套筒内壁面，所述阀芯可滑动地设于所述第一流体通道内且所述阀芯的外周与所述第一密封环密封连接；
    所述阀杆内部中空设有第二流体通道，所述阀杆上设有连通其外周至第二流体通道的流体过孔，所述第二密封环设置在所述第一阀套内壁面，用于密封所述第一流体通道；
    其中，当所述公端和母端连接时，所述阀杆可推动所述阀芯与所述第一密封环分离，所述阀杆插入所述第一套筒且所述流体过孔至少部分位于所述第一套筒内。
  11. 根据权利要求10所述的流体连接器，其特征在于，当所述公端和母端连接时，所述阀杆可推动所述阀芯与所述第一密封环分离，所述阀杆插入所述第一套筒以使所述流体过孔位于所述第一套筒内，且所述第一密封环位于所述流体过孔远离所述阀芯的一侧并与所述阀杆密封连接。
  12. 根据权利要求10所述的流体连接器，其特征在于，所述阀芯和所述阀杆相接触一端的端面形状相同且外周等外径布置。
  13. 根据权利要求10～12任一所述的流体连接器，其特征在于，所述母端还包括锁紧套筒、锁紧钢珠以及第三顶紧弹簧，所述锁紧套筒套设所述第二套筒，所述第二套筒与所述母端连接的一端外侧壁上形成有用于放置锁紧钢珠 的容纳孔，所述第三顶紧弹簧设于所述第二套筒和所述锁紧套筒之间且一端与所述锁紧套筒相抵；
    其中，所述锁紧套筒可沿所述第二套筒的轴向方向在第一位置与第二位置之间滑动，当所述锁紧套筒处于第一位置时，所述锁紧套筒将所述锁紧钢珠压紧于所述容纳孔内，当所述锁紧套筒处于第二位置时，所述锁紧钢珠可部分伸出所述锁紧套筒与所述第二套筒之间。
  14. 根据权利要求10～12任一所述的流体连接器，其特征在于，所述阀芯和所述阀杆的外表面均涂覆有铁氟龙。
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CN201836574U (zh) * 2010-07-27 2011-05-18 重庆液动科技有限公司 一种改进型平头快换接头
CN202176739U (zh) * 2011-07-27 2012-03-28 新乡平原航空液压设备有限公司 一种定芯接头阀及使用该定芯接头阀的自封接头组件
CN109416144A (zh) * 2016-05-19 2019-03-01 沃尔纳私人有限公司 流体联接组件
CN109296861A (zh) * 2018-11-02 2019-02-01 中国船舶重工集团公司第七二三研究所 一种盲插浮动流体连接器
CN209671841U (zh) * 2019-04-01 2019-11-22 万硕(成都)航空科技有限公司 锁紧式可带压拔插的流体连接器
CN112128493A (zh) * 2020-09-18 2020-12-25 山东航天电子技术研究所 钢球锁定快速接头

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