WO2024001898A1 - 截止阀 - Google Patents

截止阀 Download PDF

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Publication number
WO2024001898A1
WO2024001898A1 PCT/CN2023/101648 CN2023101648W WO2024001898A1 WO 2024001898 A1 WO2024001898 A1 WO 2024001898A1 CN 2023101648 W CN2023101648 W CN 2023101648W WO 2024001898 A1 WO2024001898 A1 WO 2024001898A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
opening
valve body
core
connecting block
Prior art date
Application number
PCT/CN2023/101648
Other languages
English (en)
French (fr)
Inventor
周峰
楼峰
冯光华
何善军
陈狄永
Original Assignee
浙江盾安人工环境股份有限公司
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
Priority claimed from CN202221674476.XU external-priority patent/CN217977422U/zh
Priority claimed from CN202221673247.6U external-priority patent/CN217977421U/zh
Application filed by 浙江盾安人工环境股份有限公司 filed Critical 浙江盾安人工环境股份有限公司
Publication of WO2024001898A1 publication Critical patent/WO2024001898A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • 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

Definitions

  • the present application relates to the field of refrigeration technology, and in particular to a stop valve.
  • the stop valve plays an important role in cutting off and throttling the medium in the pipeline where the stop valve is located.
  • the stop valve structure in the related art includes a valve body, a valve core and a connecting block.
  • the valve body is integrally placed outside the connecting block and is fixedly connected to the connecting block.
  • the valve core partially extends into the connecting block and is threadedly connected to the connecting block. In this way, the movement of the valve core in the valve body is realized through the threaded cooperation between the valve core and the connecting hole, thereby opening and closing the stop valve.
  • the entire valve body being sheathed outside the connecting block will increase the size of the valve body, resulting in an increase in the materials required for processing the valve body, thereby increasing the cost of the stop valve.
  • a stop valve including a valve body, a valve core and a connecting block.
  • the valve body is provided with a first opening and a second opening; the valve core is at least partially located in the valve body. , and the valve core can move in the valve body to connect or isolate the first opening and the second opening; one end of the connecting block is located outside the valve body, and the other end is connected to the end of the valve body.
  • valve core part extends into the connection block and threadably matches the connection block; wherein, along the axial direction of the valve core, the connection block extends toward the valve body to form a sealing portion, When the stop valve is in a fully open state, the valve core can abut against the sealing portion and form a line seal.
  • a side surface of the sealing portion close to the valve body is fixedly connected to an inner wall of the valve body, and a side surface of the sealing portion away from the valve body is spaced apart from the valve core.
  • a first tapered portion is formed on the peripheral side of the valve core and protrudes toward the inner wall of the valve body, and the tapered surface of the first tapered portion can abut against the sealing portion and Forms a line seal.
  • the stop valve further includes a guide block, the guide block is located in the valve body and connected to the valve body, and the guide block is close to the first opening and the first opening relative to the connection block.
  • the second opening is set, and the guide block is on the outer periphery of part of the valve core, and the valve core can move along the guiding direction of the guide block to connect or isolate the first opening and the second opening.
  • the second opening is located on the peripheral side of the valve body, and the projection of the guide block on the valve body along the radial direction of the valve body does not overlap with the second opening.
  • the guide block includes a guide slope, and the guide slope is provided at an end of the guide block close to the connecting block.
  • the stop valve further includes a valve seat, the valve seat is provided in the valve body, and the valve seat is located between the first opening and the second opening, and is connected to the valve seat.
  • Valve body connection when the stop valve is in a closed state, one end of the valve core is connected to the connecting block, and the other end of the valve core is against the valve seat and is hard-sealed with the valve seat. Fitting or soft sealing fit.
  • a second tapered portion is formed on one end of the valve core close to the valve seat, a portion of the second tapered portion is located in the valve seat, and a portion of the second tapered portion The tapered surface can contact the valve seat and form a line seal.
  • the stop valve further includes a first sealing member, a first groove is opened at an end of the valve core away from the connecting block, and the first sealing member is installed in the first groove.
  • the valve seat is provided with a raised portion on the end surface close to the valve core. The raised portion protrudes from the valve seat. The first sealing member is in contact with the raised portion and forms a soft seal.
  • the first opening is opened at an end of the valve body away from the connecting block
  • the second opening is opened at a peripheral side of the valve body
  • the central axis of the first opening is in line with the
  • the central axis of the second opening is arranged at a certain angle; or, the first opening and the second opening are both opened on the peripheral side of the valve body, and the central axis of the first opening is in line with the central axis of the second opening.
  • the central axis of the second opening is parallel, and the first opening and the second opening are arranged on different sides of the circumference of the valve body.
  • the stop valve further includes a first pipe and a second pipe, the first pipe is fixedly connected to the first opening, and the second pipe is fixedly connected to the second opening.
  • the stop valve further includes a first transition pipe and a second transition pipe, the first transition pipe is sleeved on the first pipe, and the second transition pipe is sleeved on the second pipe, and the The first transition pipe is made of different materials from the first pipe, and the second transition pipe is made of different materials from the second pipe.
  • Figure 1 is a schematic structural diagram of a stop valve according to one or more embodiments.
  • Figure 2 is a cross-sectional view of a shutoff valve according to one or more embodiments.
  • Figure 3 is a partial enlarged view of point A in Figure 2.
  • Figure 4 is a cross-sectional view of a shut-off valve in a closed state according to one or more embodiments.
  • Figure 5 is a partial enlarged view of B in Figure 4.
  • Figure 6 is a cross-sectional view of a stop valve in an open state according to one or more embodiments.
  • Figure 7 is a schematic structural diagram of a stop valve according to one or more embodiments.
  • Figure 8 is a cross-sectional view of a shutoff valve according to one or more embodiments.
  • Figure 9 is a cross-sectional view of a shutoff valve according to one or more embodiments.
  • this application provides a stop valve 100 installed in an air conditioning system.
  • the stop valve 100 plays an important role in cutting off and throttling the medium in the pipeline where the stop valve 100 is located.
  • the stop valve structure in the related art includes a valve body, a valve core and a connecting block.
  • the valve body is sleeved outside the connecting block and is fixedly connected to the connecting block.
  • the valve core and the connecting block are threaded to realize the movement of the valve core in the valve body. This opens and closes the stop valve.
  • the valve body being sleeved outside the connecting block will increase the size of the valve body and require more materials for processing, thereby increasing the cost of the stop valve.
  • the stop valve 100 provided by this application includes a valve body 10, a valve core 20 and a connecting block 30.
  • the valve body 10 is provided with a first opening 11 and a second opening 12 .
  • the valve core 20 is at least partially located within the valve body 10 , and the valve core 20 can move within the valve body 10 to communicate or block the first opening 11 and the second opening 12 .
  • Connector One end of 30 is located outside the valve body 10, and the other end is fixedly connected to the end of the valve body 10.
  • the valve core 20 partially extends into the connecting block 30 and is threadedly matched with the connecting block 30.
  • the valve body 10 is made of pipe or bar material, and a flange hole 13 is provided on the side of the valve body 10, and the flange hole 13 is connected to the pipe.
  • One end of the connecting block 30 is located outside the valve body 10 , and the other end is fixedly connected to the end of the valve body 10 , thereby reducing the diameter of the valve body 10 , thereby reducing material consumption of the valve body 10 and reducing the cost of the stop valve 100 .
  • the thread strength between the connecting block 30 and the valve core 20 can be improved, thereby improving the overall structural stability of the stop valve 100.
  • the connecting block 30 extends toward the inside of the valve body 10 to form a sealing portion 31 .
  • the side surface of the sealing portion 31 close to the valve body 10 is fixedly connected to the inner wall of the valve body 10 , and the side surface of the sealing portion 31 away from the valve body 10 is spaced apart from the valve core 20 .
  • the sealing portion 31 offsets the inner wall of the valve body 10, which can increase the contact area between the two, thereby increasing the connection strength between the sealing portion 31 and the valve body 10, thereby improving the connection strength between the connecting block 30 and the valve body 10, and increasing the number of connecting blocks. 30's stability.
  • the valve core 20 can contact the sealing portion 31 to form a line seal.
  • a first tapered portion 21 is formed on the peripheral side of the valve core 20 and protrudes toward the inner wall of the valve body 10 .
  • the tapered surface of the first tapered portion 21 can contact the sealing portion 31 and form a line seal, thereby improving the
  • the reverse sealing performance of the connecting block 30 and the valve core 20 avoids the problem of medium leakage. No other sealing structure is required, which saves material costs and reduces the processing and assembly difficulty of the stop valve 100 .
  • the sealing portion 31 can also limit the valve core 20 and control the maximum opening of the stop valve 100 .
  • This is the maximum opening of the stop valve 100 .
  • the stop valve 100 also includes a valve seat 40, a first pipe 60 and a second pipe 70.
  • the valve seat 40 is provided in the valve body 10, between the first opening 11 and the second opening 12, and is connected to the valve body 10.
  • the first pipe 60 is fixedly connected to the first opening 11
  • the second pipe 70 is fixedly connected to the second opening 12 .
  • the first pipe 60 is inserted into the first opening 11 , and the first opening 11 communicates with the air conditioning pipeline through the first pipe 60 .
  • the second pipe 70 is inserted into the second opening 12 , and the second opening 12 communicates with the air conditioning pipeline through the second pipe 70 .
  • the valve seat 40 can limit the movement of the valve core 20 in the direction away from the connecting block 30.
  • valve core 20 When the stop valve 100 is in a closed state, the valve core 20 abuts the valve seat 40 and cooperates with the valve seat 40 to achieve Sealing, thereby blocking the flow of medium between the first opening 11 and the second opening 12 .
  • the valve core 20 When the stop valve 100 is in the open state, the valve core 20 does not contact the valve seat 40 so that the medium can flow between the first opening 11 and the second opening 12 .
  • the stop valve 100 also includes a guide block 80.
  • the guide block 80 is located in the valve body 10 and connected to the valve body 10.
  • the guide block 80 is disposed close to the first opening 11 and the second opening 12 relative to the connecting block 30.
  • the guide block 80 is located on the outer periphery of part of the valve core 20, and the valve core 20 can move along the guide direction of the guide block 80 to connect or isolate the third opening.
  • An opening 11 and a second opening 12 are examples of the guide block 80.
  • the stop valve in the related art has a connecting block installed in the valve body and threadedly connected to the valve core. Only through the connecting block, the valve core can be moved in the valve body along its own axis. sports. However, such an arrangement may cause the axis of the valve core to deviate from the axis of the valve body during assembly or operation, so that the valve core cannot contact the valve seat well, resulting in medium leakage and affecting the sealing performance of the stop valve.
  • a guide block 80 is provided in the valve body 10 so that the valve core 20 can move along the guide direction of the guide block 80.
  • the deviation of the valve core 20 can be further reduced.
  • the probability of movement ensures that the axes of the valve core 20, the valve body 10 and the valve seat 40 are in a coincident state. Therefore, when the valve core 20 moves along its own axis in the valve body 10 and moves to the extreme position in the direction close to the valve seat 40, the valve core 20 can accurately abut the valve seat 40 and connect with the valve seat 40.
  • the guiding direction of the guide block 80 is the axial direction of the guide block 80 .
  • the second opening 12 is located on the peripheral side of the valve body 10 .
  • the projection of the guide block 80 on the valve body 10 along the radial direction of the valve body 10 does not overlap with the second opening 12 .
  • the guide block 80 can be prevented from obstructing the medium flowing from the second opening 12 into the interior of the valve body 10 , or the guide block 80 can be prevented from obstructing the medium flowing from the interior of the valve body 10 to the second opening 12 .
  • such an arrangement can avoid flow noise in the valve body 10 , thereby allowing the medium to flow smoothly and improving the performance of the stop valve 100 .
  • the guide block 80 includes a guide slope 81 , and the guide slope 81 is provided at one end of the guide block 80 close to the connecting block 30 .
  • the guide slope 81 is located on the side of the guide block 80 close to the central axis of the valve core 20 .
  • the guide slope 81 can play a role in strengthening the guidance, facilitates the insertion of the valve core 20 into the guide block 80 , and prevents the valve core 20 from intersecting with the guide block 80 Collision occurs, causing the valve core 20 to be unable to be inserted smoothly, thereby improving the assembly efficiency of the valve core 20 .
  • the guide block 80 in addition to the guide slope 81, can also be provided with other structures with a guiding function, as long as the same effect can be achieved.
  • the first opening 11 is opened at an end of the valve body 10 away from the connecting block 30 .
  • the second opening 12 is opened at the peripheral side of the valve body 10 .
  • the central axis of the first opening 11 is in contact with the second opening 12 .
  • the central axis is set at a certain angle.
  • the included angle can be set to 75°, 90°, 120°, etc.
  • the valve body 10 is a tubular hollow structure.
  • the valve body 10 is provided with at least one flanging hole 13 on its peripheral side.
  • the flanging hole 13 forms the second opening 12 .
  • the first connecting tube 60 and the second connecting tube 70 are in a certain shape. Angle setting.
  • the first opening 11 and the second opening 12 serve as the inlet or outlet of the medium respectively, thereby realizing the circulation of the medium in the stop valve 100 .
  • the valve seat 40 is at least partially disposed in the valve body 10 through the first opening 11 , and the first connecting pipe 60 is inserted into the valve seat 40 and is fixedly connected to the valve seat 40 .
  • At least one flange hole 13 is provided on the peripheral side of the valve body 10. The flange of the flange hole 13 can increase the connection area between the valve body 10 and the second pipe 70, and facilitate the connection between the valve body 10 and the second pipe 70. The connection strength between the valve body 10 and the second pipe 70 is improved.
  • valve core 20 When the stop valve 100 is in a closed state, one end of the valve core 20 is connected to the connecting block 30 , and the other end of the valve core 20 abuts against the valve seat 40 and is hard-sealed with the valve seat 40 .
  • the valve core 20 is threadedly matched with the connecting block 30 and guided by the guide block 80 to prevent the valve core 20 from deflecting, thereby realizing the axial movement of the valve core 20 within the valve body 10 .
  • the valve core 20 moves to the limit in the direction close to the valve seat 40 , one end of the valve core 20 abuts the valve seat 40 and cooperates with the valve seat 40 to achieve sealing, thereby improving the sealing performance of the stop valve 100 .
  • a second tapered portion 24 is formed on one end of the valve core 20 close to the valve seat 40 .
  • a portion of the second tapered portion 24 is located in the valve seat 40 , and the tapered surface of the second tapered portion 24 can be in contact with the valve seat 40 Butt and form a line seal.
  • the valve core 20 realizes axial movement in the valve body 10 by threading with the connecting block 30.
  • the cone of the second conical portion 24 When the second conical portion 24 of the valve core 20 abuts on the valve seat 40, the cone of the second conical portion 24 The surface of the valve seat 40 forms a linear contact with the valve seat 40, specifically, the circular intersection formed by the intersection of the end surface of the valve seat 40 close to the valve core 20 and the inner wall of the valve seat 40 and the linear contact formed by the tapered surface of the second tapered portion 24. , and the second tapered portion 24 is press-fitted with the valve seat 40, so that the passage between the first opening 11 and the second opening 12 is blocked.
  • valve core 20 is limited, and on the other hand, the linear contact realizes a hard seal between the valve core 20 and the valve body 10 , thereby improving the sealing performance between the valve core 20 and the valve body 10 .
  • the cone surface is simple to process, which can save the amount of material, thereby improving the processing and assembly efficiency of the stop valve 100 and reducing the cost of the stop valve 100 .
  • the structure of the stop valve 100 in this embodiment is basically the same as that in Embodiment 1, and the similarities will not be repeated. The differences are:
  • valve core 20 When the stop valve 100 is in a closed state, one end of the valve core 20 is connected to the connecting block 30 , and the other end of the valve core 20 abuts against the valve seat 40 and cooperates with the valve seat 40 in a soft seal.
  • the valve core 20 is threadedly matched with the connecting block 30 and guided by the guide block 80 to prevent the valve core 20 from deflecting, thereby realizing the axial movement of the valve core 20 within the valve body 10 .
  • the valve core 20 moves to the limit in the direction close to the valve seat 40, one end of the valve core 20 contacts the valve seat 40 and cooperates with the valve seat 40 to achieve sealing, and the passage between the first opening 11 and the second opening 12 is blocked. cut off.
  • the stop valve 100 also includes a first seal 50 , and an end of the valve core 20 away from the connecting block 30 A first groove 22 is opened, and the first seal 50 is installed in the first groove 22 .
  • the valve seat 40 is provided with a raised portion 41 on an end surface close to the valve core 20. The raised portion 41 protrudes from the valve seat 40.
  • the first sealing member 50 is in contact with the raised portion 41 and forms a soft seal.
  • the first seal 50 can be interference-fitted with the first groove 22, and the first seal 50 and the first groove 22 can be supported by each other due to the extrusion force generated by the deformation of the first seal 50 itself.
  • the fixed position between the first sealing member 50 and the first groove 22 is achieved to prevent the first sealing member 50 from falling off and affecting the sealing performance of the stop valve 100 .
  • the protruding portion 41 can be inserted into the first sealing member 50 and tightly matched with the first sealing member 50 , thereby further improving the sealing performance of the stop valve 100 in the closed state.
  • the first sealing member 50 is made of rubber and has a certain degree of flexibility, so the first sealing member 50 can be inserted into the first groove 22 more easily, and the first sealing member 50 can resist the valve seat 40 The connection causes the first sealing member 50 to deform, thereby enhancing the sealing performance of the first sealing member 50 and further improving the sealing performance of the stop valve 100 .
  • the material of the first sealing member 50 may also be other materials that can form a soft seal with the valve seat 40 , which is not limited here.
  • a limiting portion 23 is formed on one end of the valve core 20 close to the valve seat 40.
  • the limiting portion 23 can limit the first sealing member 50 to prevent the first sealing member 50 from falling off, thus affecting the sealing performance of the stop valve 100.
  • the side wall of the first groove 22 close to the axis of the valve core 20 extends toward an end away from the connecting block 30 and is bent to form a limiting portion 23.
  • the limiting portion 23 is generally in the shape of a flare. In other embodiments, the limiting portion 23 can also be in the shape of a truncated cone, as long as it can prevent the first seal 50 from falling off.
  • the first opening 11 and the second opening 12 are both opened on the peripheral side of the valve body 10 , and there is a distance between the central axis of the first opening 11 and the central axis of the second opening 12 .
  • the first opening 11 and the second opening 12 are both opened on the peripheral side of the valve body 10 , and the central axis of the first opening 11 is parallel to the central axis of the second opening 12 .
  • the valve body 10 is a tubular hollow structure.
  • the valve body 10 is provided with at least two flanging holes 13 on its peripheral side.
  • the flanging holes 13 form the first opening 11 and the second opening 12.
  • the central axis of the first opening 11 and the second opening are There is a distance between the central axes of the valve body 12 , and the first opening 11 and the second opening 12 are provided on different sides of the circumferential side of the valve body 10 .
  • the central axis of the first opening 11 and the central axis of the second opening 12 are parallel.
  • the first opening 11 and the second opening 12 serve as the inlet or outlet of the medium respectively, thereby realizing the circulation of the medium in the stop valve 100 .
  • flange holes 13 are provided on the peripheral side of the valve body 10.
  • the presence of flanges on the flange holes 13 can increase the connection area between the valve body 10 and the first nozzle 60 and the second nozzle 70, making it easier to The connection between the valve body 10 and the first pipe 60 and the second pipe 70 improves the connection strength.
  • valve core 20 When the stop valve 100 is in a closed state, one end of the valve core 20 is connected to the connecting block 30 , and the other end of the valve core 20 is against the valve seat 40 and is hard-sealed with the valve seat 40 .
  • the valve core 20 is threadedly matched with the connecting block 30 and guided by the guide block 80 to prevent the valve core 20 from deflecting, thereby realizing the axial movement of the valve core 20 within the valve body 10 .
  • the valve core 20 moves to the limit in the direction close to the valve seat 40 , one end of the valve core 20 abuts the valve seat 40 and cooperates with the valve seat 40 to achieve sealing, thereby improving the sealing performance of the stop valve 100 .
  • a second tapered portion 24 is formed on one end of the valve core 20 close to the valve seat 40 .
  • a portion of the second tapered portion 24 is located in the valve seat 40 , and the tapered surface of the second tapered portion 24 can be in contact with the valve seat 40 Butt and form a line seal.
  • the valve core 20 realizes axial movement in the valve body 10 by threading with the connecting block 30.
  • the cone of the second conical portion 24 When the second conical portion 24 of the valve core 20 abuts on the valve seat 40, the cone of the second conical portion 24 The surface of the valve seat 40 forms a linear contact with the valve seat 40, specifically, the circular intersection formed by the intersection of the end surface of the valve seat 40 close to the valve core 20 and the inner wall of the valve seat 40 and the linear contact formed by the tapered surface of the second tapered portion 24. , and the second tapered portion 24 is press-fitted with the valve seat 40, so that the passage between the first opening 11 and the second opening 12 is blocked.
  • valve core 20 is limited, and on the other hand, the linear contact realizes a hard seal between the valve core 20 and the valve body 10 , thereby improving the sealing performance between the valve core 20 and the valve body 10 .
  • the cone surface is simple to process, which can save the amount of material, thereby improving the processing and assembly efficiency of the stop valve 100 and reducing the cost of the stop valve 100 .
  • the structure of the stop valve 100 of this embodiment is basically the same as that of the third embodiment, and the similarities will not be repeated. The differences are:
  • valve core 20 When the stop valve 100 is in a closed state, one end of the valve core 20 is connected to the connecting block 30 , and the other end of the valve core 20 abuts against the valve seat 40 and cooperates with the valve seat 40 in a soft seal.
  • the valve core 20 is threadedly matched with the connecting block 30 and guided by the guide block 80 to prevent the valve core 20 from deflecting, thereby realizing the axial movement of the valve core 20 within the valve body 10 .
  • the valve core 20 moves to the limit in the direction close to the valve seat 40, one end of the valve core 20 contacts the valve seat 40 and cooperates with the valve seat 40 to achieve sealing, and the passage between the first opening 11 and the second opening 12 is blocked. cut off.
  • the stop valve 100 also includes a first sealing member 50 .
  • a first groove 22 is formed on one end of the valve core 20 away from the connecting block 30 .
  • the first sealing member 50 is installed in the first groove 22 .
  • the valve seat 40 is provided with a raised portion 41 on an end surface close to the valve core 20.
  • the raised portion 41 protrudes from the valve seat 40.
  • the first sealing member 50 is in contact with the raised portion 41 and forms a soft seal.
  • the first seal 50 can be interference-fitted with the first groove 22, and the first seal 50 and the first groove 22 can be supported by each other due to the extrusion force generated by the deformation of the first seal 50 itself.
  • the fixed position between the first sealing member 50 and the first groove 22 is achieved to prevent the first sealing member 50 from falling off and affecting the sealing performance of the stop valve 100 .
  • the protruding portion 41 can be inserted into the first sealing member 50 and tightly matched with the first sealing member 50 , thereby further improving the sealing performance of the stop valve 100 in the closed state.
  • the first sealing member 50 is made of rubber and has a certain degree of flexibility, so the first sealing member 50 can be inserted into the first groove 22 more easily, and the first sealing member 50 can resist the valve seat 40 The connection causes the first sealing member 50 to deform, thereby enhancing the sealing performance of the first sealing member 50 and further improving the sealing performance of the stop valve 100 .
  • the material of the first sealing member 50 may also be other materials that can form a soft seal with the valve seat 40 , which is not limited here.
  • a limiting portion 23 is formed on one end of the valve core 20 close to the valve seat 40.
  • the limiting portion 23 can limit the first sealing member 50 to prevent the first sealing member 50 from falling off, thus affecting the sealing performance of the stop valve 100.
  • the side wall of the first groove 22 close to the axis of the valve core 20 extends toward an end away from the connecting block 30 and is bent to form a limiting portion 23.
  • the limiting portion 23 is generally in the shape of a flare. In other embodiments, the limiting portion 23 can also be in the shape of a truncated cone, as long as it can prevent the first seal 50 from falling off.
  • the stop valve 100 also includes a second seal 90.
  • the valve core 20 is provided with a second groove 25 between the connecting block 30 and the guide block 80.
  • the second seal 90 is installed on The second groove 25 is used to prevent fluid leakage.
  • the second seal 90 is a circumferential seal, that is, the second seal 90 is a seal ring structure extending circumferentially along the valve core 20, and the second groove 25 is correspondingly configured as an annular groove. In this way, when the second seal When the component 90 is installed in the second groove 25, the second sealing component 90 can ensure the sealing reliability between the valve core 20 and the valve body 10.
  • the stop valve 100 also includes a first transition pipe 61 and a second transition pipe 71.
  • the first transition pipe 61 is sleeved on the first pipe 60.
  • the second transition pipe 71 is sleeved on the second pipe 70.
  • the first transition pipe 61 is sleeved on the second pipe 70.
  • 61 is made of different materials than the first connecting piece 60
  • the second transition connecting piece 71 is made of different materials than the second connecting piece 70 .
  • the material of the first connecting pipe 60 and the second connecting pipe 70 is stainless steel
  • the material of the first transition connecting pipe 61 and the second transition connecting pipe 71 is copper. In this way, welding with external pipelines is facilitated, thereby improving the installation efficiency of the stop valve 100 .

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sliding Valves (AREA)

Abstract

一种截止阀（100）。该截止阀（100）包括阀体（10）、阀芯（20）和连接块（30）。阀体（10）设有第一开口（11）及第二开口（12）。阀芯（20）至少部分位于阀体（10）内，且阀芯（20）能够在阀体（10）内移动，以连通或隔断第一开口（11）与第二开口（12）。连接块（30）一端位于阀体（10）外，另一端与阀体（10）端部固定连接，阀芯（20）部分伸入连接块（30）内并与连接块（30）螺纹配合。沿阀芯（20）的轴向，连接块（30）朝阀体（10）内延伸形成有密封部（31），当截止阀（100）处于全开状态时，阀芯（20）能够与密封部（31）抵接并形成线密封。

Description

截止阀
相关申请
本申请要求2022年6月30日申请的，申请号为202221674476.X，名称为“截止阀”的中国专利申请以及2022年6月30日申请的，申请号为202221673247.6，名称为“截止阀”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本申请涉及制冷技术领域，特别是涉及一种截止阀。
背景技术
在空调***中，截止阀用于对截止阀所在管路中的介质起到切断和节流的重要作用。
相关技术中的截止阀结构包括阀体、阀芯及连接块，阀体整体套设在连接块外，并与连接块固定连接，阀芯部分伸入连接块内，并与连接块螺纹连接。如此，通过阀芯与连接孔的螺纹配合实现阀芯在阀体内的运动，从而启闭截止阀。但阀体整体套设在连接块外会导致阀体的尺寸增大，导致加工阀体所需要的材料增多，从而增加了截止阀的成本。
发明内容
根据本申请的各种实施例，提供一种截止阀，包括阀体、阀芯和连接块，所述阀体开设有第一开口及第二开口；所述阀芯至少部分位于所述阀体内，且所述阀芯能够在所述阀体内移动，以连通或隔断所述第一开口与所述第二开口；所述连接块一端位于所述阀体外，另一端与所述阀体端部固定连接，所述阀芯部分伸入所述连接块内并与所述连接块螺纹配合；其中，沿所述阀芯的轴线方向，所述连接块朝向所述阀体内延伸形成有密封部，当所述截止阀处于全开状态时，所述阀芯能够与所述密封部抵接并形成线密封。
在一实施例中，所述密封部靠近所述阀体的一侧面与所述阀体内侧壁固定连接，所述密封部远离所述阀体的一侧面与所述阀芯间隔设置。
在一实施例中，所述阀芯的周侧朝向所述阀体内壁的方向凸出形成有第一锥形部，所述第一锥形部的锥面能够与所述密封部抵接并形成线密封。
在一实施例中，所述截止阀还包括导向块，所述导向块位于所述阀体内并与所述阀体连接，所述导向块相对所述连接块靠近所述第一开口和所述第二开口设置，所述导向块位 于所述阀芯的部分的外周，且所述阀芯能够沿所述导向块的导向方向运动，以连通或隔断所述第一开口与所述第二开口。
在一实施例中，所述第二开口位于所述阀体的周侧，所述导向块沿所述阀体的径向在所述阀体上的投影与所述第二开口互不重叠。
在一实施例中，所述导向块包括导向斜面，所述导向斜面设于所述导向块靠近所述连接块的一端。
在一实施例中，所述截止阀还包括阀座，所述阀座设于所述阀体内，且所述阀座位于所述第一开口与所述第二开口之间，并与所述阀体连接；所述截止阀处于关闭状态时，所述阀芯的一端与所述连接块连接，所述阀芯的另一端抵靠于所述阀座上，并与所述阀座硬密封配合或软密封配合。
在一实施例中，所述阀芯靠近所述阀座的一端形成有第二锥形部，所述第二锥形部的部分位于所述阀座内，且所述第二锥形部的锥面能够与所述阀座抵接并形成线密封。
在一实施例中，所述截止阀还包括第一密封件，所述阀芯远离所述连接块的一端开设有第一凹槽，所述第一密封件安装于所述第一凹槽内；所述阀座靠近所述阀芯的端面设有凸起部，所述凸起部凸出于所述阀座，所述第一密封件与所述凸起部抵接设置，并形成软密封。
在一实施例中，所述第一开口开设于所述阀体远离所述连接块的一端，所述第二开口开设于所述阀体的周侧，且所述第一开口的中轴线与所述第二开口的中轴线成一定夹角设置；或者，所述第一开口与所述第二开口均开设于所述阀体的周侧，且所述第一开口的中轴线与所述第二开口的中轴线平行，且所述第一开口与所述第二开口设置在所述阀体周侧的不同侧。
在一实施例中，所述截止阀还包括第一接管和第二接管，所述第一接管与所述第一开口固定连接，所述第二接管与所述第二开口固定连接。
在一实施例中，所述截止阀还包括第一过渡接管和第二过渡接管，所述第一过渡接管外套于所述第一接管，第二过渡接管外套于所述第二接管，所述第一过渡接管与所述第一接管的材质不同，所述第二过渡接管与所述第二接管的材质不同。
本申请的一个或多个实施例的细节在以下附图和描述中提出，以使本申请的其他特征、目的和优点更加简明易懂。
附图说明
为了更清楚地说明本申请实施例或传统技术中的技术方案，下面将对实施例或传统技 术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据公开的附图获得其他的附图。
图1为根据一个或多个实施例的截止阀的结构示意图。
图2为根据一个或多个实施例的截止阀的剖视图。
图3为图2中A处的局部放大图。
图4为根据一个或多个实施例的截止阀关闭状态下的剖视图。
图5为图4中B处的局部放大图。
图6为根据一个或多个实施例的截止阀开启状态下的剖视图。
图7为根据一个或多个实施例的截止阀的结构示意图。
图8为根据一个或多个实施例的截止阀的剖视图。
图9为根据一个或多个实施例的截止阀的剖视图。
图中各符号表示含义如下：
100、截止阀；10、阀体；11、第一开口；12、第二开口；13、翻边孔；20、阀芯；21、
第一锥形部；22、第一凹槽；23、限位部；24、第二锥形部；25、第二凹槽；30、连接块；31、密封部；40、阀座；41、凸起部；50、第一密封件；60、第一接管；61、第一过渡接管；70、第二接管；71、第二过渡接管；80、导向块；81、导向斜面；90、第二密封件。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
请参阅图1和图7，本申请提供一种截止阀100，安装于空调***中。在空调***中，截止阀100用于对截止阀100所在管路中的介质起到切断和节流的重要作用。
相关技术中的截止阀结构包括阀体、阀芯及连接块，阀体套设在连接块外，并与连接块固定连接，阀芯与连接块通过螺纹连接实现阀芯在阀体内的运动，从而启闭截止阀。但阀体套设在连接块外会导致阀体的尺寸增大，加工需要的材料增多，从而增加了截止阀的成本。
为了解决上述问题，请参阅图2-图9，本申请提供的截止阀100包括阀体10、阀芯20及连接块30。阀体10开设有第一开口11及第二开口12。阀芯20至少部分位于阀体10内，且阀芯20能够在阀体10内移动，以连通或隔断第一开口11与第二开口12。连接块 30一端位于阀体10外，另一端与阀体10端部固定连接，阀芯20部分伸入连接块30内并与连接块30螺纹配合。
相关技术中的截止阀与本申请提供的截止阀100相比，当连接块30的横截面积保持不变时，相关技术中的阀体是套设在连接块外的，导致阀体的尺寸增大，加工阀体需要的材料增多。而本申请中，阀体10由管材或棒材加工而成，阀体10侧面开设翻边孔13，该翻边孔13与接管连接。连接块30一端位于阀体10外，另一端与阀体10端部固定连接，从而能够减小阀体10的直径尺寸，进而减少阀体10材料的消耗，降低截止阀100的成本。并且，能够提高连接块30和阀芯20间的螺纹强度，从而提高截止阀100整体的结构稳定性。
请参阅图2、图4、图6、图8和图9，沿阀芯20的轴线方向，连接块30朝向阀体10内延伸形成有密封部31。具体地，密封部31靠近阀体10的一侧面与阀体10内侧壁固定连接，密封部31远离阀体10的一侧面与阀芯20间隔设置。密封部31与阀体10内侧壁相抵，能够提高两者间的接触面积，从而提高密封部31与阀体10间的连接强度，进而提高连接块30与阀体10的连接强度，增加连接块30的稳固性。
当截止阀100处于全开状态时，阀芯20能够与密封部31抵接并形成线密封。具体地，阀芯20的周侧朝向阀体10内壁的方向凸出形成有第一锥形部21，第一锥形部21的锥面能够与密封部31抵接并形成线密封，从而提高连接块30与阀芯20的反向密封性能，避免出现介质泄漏的问题。无需另设其他的密封结构，节约了材料成本，降低了截止阀100的加工和装配难度。
密封部31还能够对阀芯20起到限位作用，控制截止阀100的最大开度。在运行过程中，当阀芯20沿自身轴向朝向靠近连接块30的方向移动到与密封部31相互抵接时，此时为截止阀100的最大开度。
截止阀100还包括阀座40、第一接管60及第二接管70，阀座40设于阀体10内，且位于第一开口11与第二开口12之间，并与阀体10连接。第一接管60与第一开口11固定连接，第二接管70与第二开口12固定连接。第一接管60插设于第一开口11，第一开口11通过第一接管60与空调管路连通。第二接管70插设于第二开口12，第二开口12通过第二接管70与空调管路连通。阀座40能够对阀芯20朝向远离连接块30的方向的运动起到限位作用，当截止阀100处于关闭状态时，阀芯20抵靠在阀座40上，并与阀座40配合实现密封，从而隔断介质在第一开口11与第二开口12间的流通。当截止阀100处于开启状态时，阀芯20不与阀座40接触，使介质能够在第一开口11与第二开口12间流通。
进一步的，截止阀100还包括导向块80，导向块80位于阀体10内并与阀体10连接， 导向块80相对连接块30靠近第一开口11和第二开口12设置，导向块80位于阀芯20的部分的外周，且阀芯20能够沿导向块80的导向方向运动，以连通或隔断第一开口11与第二开口12。
相关技术中的截止阀与本申请提供的截止阀100相比，相关技术中的连接块是设置在阀体内并与阀芯螺纹连接，仅通过连接块使阀芯沿自身轴向在阀体内进行运动。但如此设置，可能导致阀芯在装配或者工作过程中，阀芯的轴线偏离阀体的轴线，从而使阀芯不能与阀座很好地抵接，导致介质泄漏，影响截止阀的密封性。
而本申请中，通过在阀体10内另设有导向块80，使阀芯20能够沿导向块80的导向方向运动，通过导向块80与连接块30的配合，进一步降低阀芯20发生偏移的概率，保证阀芯20、阀体10及阀座40的轴线处于重合状态。故当阀芯20在沿自身轴向在阀体10内运动，并朝靠近阀座40的方向移动到极限位置时，阀芯20能够准确地抵靠在阀座40上，并与阀座40配合实现密封效果，从而提高截止阀100的密封性能。也就是说，导向块80避免了阀芯20在阀体10内产生偏移，从而提高了阀芯20与阀座40配合后的密封可靠性。
需要说明的是，在本申请中，导向块80的导向方向为导向块80的轴线方向。
请参阅图2，第二开口12位于阀体10的周侧，导向块80沿阀体10的径向在阀体10上的投影与第二开口12互不重叠。如此，能够防止导向块80对从第二开口12流入阀体10内部的介质造成阻碍，或者，防止导向块80对从阀体10内部流向第二开口12的介质造成阻碍。并且，如此设置，能够避免阀体10内产生流动噪音，从而使介质顺畅地流动，提高截止阀100的使用性能。
进一步的，请参阅图2及图3，导向块80包括导向斜面81，导向斜面81设于导向块80靠近连接块30的一端。具体地，导向斜面81位于导向块80靠近阀芯20中轴线的一侧，导向斜面81可以起到加强引导的作用，便于引导阀芯20***导向块80内，防止阀芯20与导向块80产生碰撞，导致阀芯20无法顺利***，从而提高阀芯20的装配效率。当然，在其他实施例中，除导向斜面81外，导向块80也可以设置其他具有导向作用的结构，只要能够达到相同效果即可。
实施例一
请参阅图1及图2，第一开口11开设于阀体10远离连接块30的一端，第二开口12开设于阀体10的周侧，且第一开口11的中轴线与第二开口12的中轴线成一定夹角设置。例如，夹角可以设置为75°、90°、120°等。阀体10为管状中空结构，阀体10的周侧设有至少一个翻边孔13，翻边孔13形成第二开口12，第一接管60与第二接管70成一定 夹角设置。第一开口11与第二开口12分别作为介质的入口或出口，从而实现介质在截止阀100内的流通。
具体地，阀座40至少部分经第一开口11设于阀体10内，第一接管60***阀座40内，并与阀座40固定连接。阀体10的周侧设有至少一个翻边孔13，翻边孔13的翻边能够增大阀体10与第二接管70间的连接面积，便于阀体10与第二接管70的连接，提高阀体10与第二接管70间的连接强度。当截止阀100开启时，介质通过第一开口11进入阀体10内，并由第二开口12流出，或者，介质通过第二开口12进入阀体10内，并由第一开口11流出。
请继续参阅图2，截止阀100处于关闭状态时，阀芯20的一端与连接块30连接，阀芯20的另一端抵靠于阀座40上，并与阀座40硬密封配合。阀芯20通过与连接块30螺纹配合，以及通过导向块80的导向作用，可避免阀芯20产生偏移，从而实现阀芯20在阀体10内的轴向运动。当阀芯20朝向靠近阀座40的方向运动到极限时，阀芯20一端抵接于阀座40上，并与阀座40配合实现密封，提高了截止阀100的密封性。
具体地，阀芯20靠近阀座40的一端形成有第二锥形部24，第二锥形部24的部分位于阀座40内，且第二锥形部24的锥面能够与阀座40抵接并形成线密封。阀芯20通过与连接块30螺纹配合，实现在阀体10内的轴向运动，当阀芯20的第二锥形部24抵接于阀座40上时，第二锥形部24的锥面与阀座40形成线性接触，具体为阀座40靠近阀芯20一端的端面与阀座40内侧壁相交所形成的圆形交线与第二锥形部24的锥面相抵形成的线性接触，且第二锥形部24与阀座40压紧配合，使第一开口11与第二开口12间的通路被隔断。一方面实现阀芯20的限位，另一方面，线性接触实现了阀芯20与阀体10间的硬密封，提高了阀芯20与阀体10间的密封性。而且，锥面加工简单，能够节约材料用量，从而提高截止阀100的加工及装配效率，降低截止阀100的成本。
实施例二
本实施例的截止阀100的结构与实施例一基本相同，相同之处不再赘述，不同之处在于：
请参阅图4，截止阀100处于关闭状态时，阀芯20的一端与连接块30连接，阀芯20的另一端抵靠于阀座40上，并与阀座40软密封配合。阀芯20通过与连接块30螺纹配合，以及通过导向块80的导向作用，可避免阀芯20产生偏移，从而实现阀芯20在阀体10内的轴向运动。当阀芯20朝向靠近阀座40的方向运动到极限时，阀芯20一端抵接于阀座40上，并与阀座40配合实现密封，第一开口11与第二开口12间的通路被隔断。
请参阅图4及图5，截止阀100还包括第一密封件50，阀芯20远离连接块30的一端 开设有第一凹槽22，第一密封件50安装于第一凹槽22内。阀座40靠近阀芯20的端面设有凸起部41，凸起部41凸出于阀座40，第一密封件50与凸起部41抵接设置，并形成软密封。
第一密封件50可与第一凹槽22过盈配合，受第一密封件50自身形变产生的挤压力，使得第一密封件50与第一凹槽22能够受到彼此的支撑力，从而实现第一密封件50和第一凹槽22间的固定限位，避免第一密封件50脱落影响截止阀100的密封性能。而凸起部41能够***第一密封件50内，并与第一密封件50紧密配合，从而进一步提高了截止阀100在关闭状态下的密封性能。
具体地，第一密封件50的材质为橡胶，具备一定的柔软性，故第一密封件50能够更轻易地嵌入第一凹槽22中，并且，第一密封件50能够与阀座40抵接，使得第一密封件50产生形变，从而增强第一密封件50的密封性能，进一步提高截止阀100的密封性。当然，在其他实施例中，第一密封件50的材质还可以是其他能够与阀座40形成软密封的材质，在此不做限制。
进一步的，阀芯20靠近阀座40的一端还形成有限位部23，限位部23能够对第一密封件50进行限位，避免第一密封件50脱落，从而影响截止阀100的密封性能。具体地，在本实施例中，第一凹槽22靠近阀芯20轴线的侧壁朝向远离连接块30的一端延伸并弯曲形成限位部23，限位部23大致呈扩口形。在其他实施例中，限位部23还可以为圆台形，只要能够起到防止第一密封件50脱落的作用即可。
实施例三
请参阅图7及图8，第一开口11与第二开口12均开设于阀体10的周侧，且第一开口11的中轴线与第二开口12的中轴线具有距离。具体地，第一开口11与第二开口12均开设于阀体10的周侧，且第一开口11的中轴线与第二开口12的中轴线平行。
阀体10为管状中空结构，阀体10的周侧设有至少两个翻边孔13，翻边孔13形成第一开口11和第二开口12，第一开口11的中轴线和第二开口12的中轴线之间具有距离，且第一开口11与第二开口12设置在阀体10周侧的不同侧。在一实施例中，第一开口11的中轴线和第二开口12的中轴线平行。第一开口11与第二开口12分别作为介质的入口或出口，从而实现介质在截止阀100内的流通。
具体地，阀体10的周侧设有至少两个翻边孔13，翻边孔13上翻边的存在能够增大阀体10与第一接管60及第二接管70间的连接面积，便于阀体10与第一接管60及第二接管70的连接，提高连接强度。当截止阀100开启时，介质通过第一开口11进入阀体10内，并由第二开口12流出。或者，介质通过第二开口12进入阀体10内，并由第一开口 11流出。
请参阅图8，截止阀100处于关闭状态时，阀芯20的一端与连接块30连接，阀芯20的另一端抵靠于阀座40上，并与阀座40硬密封配合。阀芯20通过与连接块30螺纹配合，以及通过导向块80的导向作用，可避免阀芯20产生偏移，从而实现阀芯20在阀体10内的轴向运动。当阀芯20朝向靠近阀座40的方向运动到极限时，阀芯20一端抵接于阀座40上，并与阀座40配合实现密封，提高了截止阀100的密封性。
具体地，阀芯20靠近阀座40的一端形成有第二锥形部24，第二锥形部24的部分位于阀座40内，且第二锥形部24的锥面能够与阀座40抵接并形成线密封。阀芯20通过与连接块30螺纹配合，实现在阀体10内的轴向运动，当阀芯20的第二锥形部24抵接于阀座40上时，第二锥形部24的锥面与阀座40形成线性接触，具体为阀座40靠近阀芯20一端的端面与阀座40内侧壁相交所形成的圆形交线与第二锥形部24的锥面相抵形成的线性接触，且第二锥形部24与阀座40压紧配合，使第一开口11与第二开口12间的通路被隔断。一方面实现阀芯20的限位，另一方面，线性接触实现了阀芯20与阀体10间的硬密封，提高了阀芯20与阀体10间的密封性。而且，锥面加工简单，能够节约材料用量，从而提高截止阀100的加工及装配效率，降低截止阀100的成本。
实施例四
本实施例的截止阀100的结构与实施例三基本相同，相同之处不再赘述，不同之处在于：
请参阅图9，截止阀100处于关闭状态时，阀芯20的一端与连接块30连接，阀芯20的另一端抵靠于阀座40上，并与阀座40软密封配合。阀芯20通过与连接块30螺纹配合，以及通过导向块80的导向作用，可避免阀芯20产生偏移，从而实现阀芯20在阀体10内的轴向运动。当阀芯20朝向靠近阀座40的方向运动到极限时，阀芯20一端抵接于阀座40上，并与阀座40配合实现密封，第一开口11与第二开口12间的通路被隔断。
截止阀100还包括第一密封件50，阀芯20远离连接块30的一端开设有第一凹槽22，第一密封件50安装于第一凹槽22内。阀座40靠近阀芯20的端面设有凸起部41，凸起部41凸出于阀座40，第一密封件50与凸起部41抵接设置，并形成软密封。
第一密封件50可与第一凹槽22过盈配合，受第一密封件50自身形变产生的挤压力，使得第一密封件50与第一凹槽22能够受到彼此的支撑力，从而实现第一密封件50和第一凹槽22间的固定限位，避免第一密封件50脱落影响截止阀100的密封性能。而凸起部41能够***第一密封件50内，并与第一密封件50紧密配合，从而进一步提高了截止阀100在关闭状态下的密封性能。
具体地，第一密封件50的材质为橡胶，具备一定的柔软性，故第一密封件50能够更轻易地嵌入第一凹槽22中，并且，第一密封件50能够与阀座40抵接，使得第一密封件50产生形变，从而增强第一密封件50的密封性能，进一步提高截止阀100的密封性。当然，在其他实施例中，第一密封件50的材质还可以是其他能够与阀座40形成软密封的材质，在此不做限制。
进一步的，阀芯20靠近阀座40的一端还形成有限位部23，限位部23能够对第一密封件50进行限位，避免第一密封件50脱落，从而影响截止阀100的密封性能。具体地，在本实施例中，第一凹槽22靠近阀芯20轴线的侧壁朝向远离连接块30的一端延伸并弯曲形成限位部23，限位部23大致呈扩口形。在其他实施例中，限位部23还可以为圆台形，只要能够起到防止第一密封件50脱落的作用即可。
请参阅图2-图9，截止阀100还包括第二密封件90，阀芯20在位于连接块30和导向块80之间的位置设有第二凹槽25，第二密封件90安装于第二凹槽25内，用于防止流体外漏。
其中，第二密封件90为周向密封件，即第二密封件90为沿阀芯20周向延伸的密封圈结构，第二凹槽25对应设置为环形凹槽，如此，当第二密封件90安装于第二凹槽25时，第二密封件90能够确保阀芯20和阀体10间的密封可靠性。
请参阅图7，截止阀100还包括第一过渡接管61和第二过渡接管71，第一过渡接管61外套于第一接管60，第二过渡接管71外套于第二接管70，第一过渡接管61与第一接管60的材质不同，第二过渡接管71与第二接管70的材质不同。具体地，第一接管60与第二接管70的材质为不锈钢，第一过渡接管61与第二过渡接管71的材质为铜。如此，便于与外部管路焊接，从而提高截止阀100的安装效率。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (12)

  1. 一种截止阀，其特征在于，包括：
    阀体，所述阀体开设有第一开口及第二开口；
    阀芯，所述阀芯至少部分位于所述阀体内，且所述阀芯能够在所述阀体内移动，以连通或隔断所述第一开口与所述第二开口；
    连接块，所述连接块一端位于所述阀体外，另一端与所述阀体端部固定连接，所述阀芯部分伸入所述连接块内并与所述连接块螺纹配合；
    其中，沿所述阀芯的轴线方向，所述连接块朝向所述阀体内延伸形成有密封部，当所述截止阀处于全开状态时，所述阀芯能够与所述密封部抵接并形成线密封。
  2. 根据权利要求1所述的截止阀，其中，所述密封部靠近所述阀体的一侧面与所述阀体内侧壁固定连接，所述密封部远离所述阀体的一侧面与所述阀芯间隔设置。
  3. 根据权利要求1所述的截止阀，其中，所述阀芯的周侧朝向所述阀体内壁的方向凸出形成有第一锥形部，所述第一锥形部的锥面能够与所述密封部抵接并形成线密封。
  4. 根据权利要求1所述的截止阀，其中，所述截止阀还包括导向块，所述导向块位于所述阀体内并与所述阀体连接，所述导向块相对所述连接块靠近所述第一开口和所述第二开口设置，所述导向块位于所述阀芯的部分的外周，且所述阀芯能够沿所述导向块的导向方向运动，以连通或隔断所述第一开口与所述第二开口。
  5. 根据权利要求4所述的截止阀，其中，所述第二开口位于所述阀体的周侧，所述导向块沿所述阀体的径向在所述阀体上的投影与所述第二开口互不重叠。
  6. 根据权利要求4所述的截止阀，其中，所述导向块包括：
    导向斜面，所述导向斜面设于所述导向块靠近所述连接块的一端。
  7. 根据权利要求1所述的截止阀，其中，所述截止阀还包括阀座，所述阀座设于所述阀体内，且所述阀座位于所述第一开口与所述第二开口之间，并与所述阀体连接；所述截止阀处于关闭状态时，所述阀芯的一端与所述连接块连接，所述阀芯的另一端抵靠于所述阀座上，并与所述阀座硬密封配合或软密封配合。
  8. 根据权利要求7所述的截止阀，其中，所述阀芯靠近所述阀座的一端形成有第二锥形部，所述第二锥形部的部分位于所述阀座内，且所述第二锥形部的锥面能够与所述阀座抵接并形成线密封。
  9. 根据权利要求7所述的截止阀，其中，所述截止阀还包括第一密封件，所述阀芯远离所述连接块的一端开设有第一凹槽，所述第一密封件安装于所述第一凹槽内；所述阀座靠近所述阀芯的端面设有凸起部，所述凸起部凸出于所述阀座，所述第一密封件与所述凸 起部抵接设置，并形成软密封。
  10. 根据权利要求7所述的截止阀，其中，所述第一开口开设于所述阀体远离所述连接块的一端，所述第二开口开设于所述阀体的周侧，且所述第一开口的中轴线与所述第二开口的中轴线成一定夹角设置；或者，所述第一开口与所述第二开口均开设于所述阀体的周侧，且所述第一开口的中轴线与所述第二开口的中轴线平行，且所述第一开口与所述第二开口设置在所述阀体周侧的不同侧。
  11. 根据权利要求10所述的截止阀，其中，所述截止阀还包括第一接管和第二接管，所述第一接管与所述第一开口固定连接，所述第二接管与所述第二开口固定连接。
  12. 根据权利要求11所述的截止阀，其中，所述截止阀还包括第一过渡接管和第二过渡接管，所述第一过渡接管外套于所述第一接管，第二过渡接管外套于所述第二接管，所述第一过渡接管与所述第一接管的材质不同，所述第二过渡接管与所述第二接管的材质不同。
PCT/CN2023/101648 2022-06-30 2023-06-21 截止阀 WO2024001898A1 (zh)

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CN216742879U (zh) * 2022-01-27 2022-06-14 浙江盾安人工环境股份有限公司 截止阀及其制冷***
CN216742842U (zh) * 2021-11-23 2022-06-14 浙江盾安人工环境股份有限公司 截止阀
CN217977422U (zh) * 2022-06-30 2022-12-06 浙江盾安人工环境股份有限公司 截止阀
CN217977421U (zh) * 2022-06-30 2022-12-06 浙江盾安人工环境股份有限公司 截止阀

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US20180128392A1 (en) * 2016-11-08 2018-05-10 Yuhuan Jianglin Plumbing Hose & Parts Co., Ltd. Flow Rate Safety Valve
CN213332385U (zh) * 2020-07-10 2021-06-01 浙江盾安禾田金属有限公司 截止阀
CN216742842U (zh) * 2021-11-23 2022-06-14 浙江盾安人工环境股份有限公司 截止阀
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