WO2010118693A1 - 压力控制阀 - Google Patents

压力控制阀 Download PDF

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Publication number
WO2010118693A1
WO2010118693A1 PCT/CN2010/071796 CN2010071796W WO2010118693A1 WO 2010118693 A1 WO2010118693 A1 WO 2010118693A1 CN 2010071796 W CN2010071796 W CN 2010071796W WO 2010118693 A1 WO2010118693 A1 WO 2010118693A1
Authority
WO
WIPO (PCT)
Prior art keywords
guide
pressure control
control valve
positioning
pressure
Prior art date
Application number
PCT/CN2010/071796
Other languages
English (en)
French (fr)
Inventor
陈庚
金昌�
Original Assignee
北京谊安医疗系统股份有限公司
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
Application filed by 北京谊安医疗系统股份有限公司 filed Critical 北京谊安医疗系统股份有限公司
Priority to US13/264,688 priority Critical patent/US8726933B2/en
Publication of WO2010118693A1 publication Critical patent/WO2010118693A1/zh

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/44Mechanical actuating means
    • F16K31/50Mechanical actuating means with screw-spindle or internally threaded actuating means
    • F16K31/508Mechanical actuating means with screw-spindle or internally threaded actuating means the actuating element being rotatable, non-rising, and driving a non-rotatable axially-sliding element
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20Valves specially adapted to medical respiratory devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/048Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded combined with other safety valves, or with pressure control devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0008Mechanical means
    • F16K37/0016Mechanical means having a graduated scale
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/7722Line condition change responsive valves
    • Y10T137/7837Direct response valves [i.e., check valve type]
    • Y10T137/7878With bias adjustment indicator
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8158With indicator, register, recorder, alarm or inspection means
    • Y10T137/8326Fluid pressure responsive indicator, recorder or alarm

Definitions

  • the present invention relates to a pressure control valve.
  • An anesthesia machine is an important device for anesthesia surgery, and anesthesiologists use it to achieve anesthesia and treat patients.
  • Anesthesia circuit is an indispensable device for anesthesia machine to achieve closed-loop anesthesia.
  • the pressure in the circuit is too high, causing the patient's lung pressure to be too large, causing certain damage to the patient; the pressure is too low to meet the gas supply requirements.
  • a pressure control valve is provided on the anesthesia circuit for limiting and positioning the pressure value.
  • the inventors have found that the existing pressure control valve is not accurate enough to limit and position the pressure value.
  • the present invention is directed to a pressure control valve to solve the above problems.
  • the present invention provides a pressure control valve, comprising: a cylindrical valve body having a bottom wall and a side wall, the bottom wall including an air inlet communicating with the device to be pressure-restricted, the side wall having at least one guide pin,
  • the cylindrical valve body has an exhaust port connected to the exhaust system; the valve core is disposed in the cylindrical valve body and is sealingly engaged with the air inlet; the stroke guide rod is connected to the lower end of the valve core; the outer sleeve is rotatable or movable up and down The sleeve is disposed outside the tubular valve, and the driving guide rod rotates or moves up and down.
  • the spiral guiding member is sleeved on the stroke guiding rod, and the outer surface is provided with a spiral groove for inserting at least one guiding pin; Press the spring, one end is pressed against the valve core, and the other end is placed on the spiral guide.
  • the pressure control valve further includes: a fine adjustment structure, comprising: an indexing plate fixed to the top of the stroke guide rod and driven by the outer sleeve; and an elastic device disposed at a top end of the cylindrical valve body, wherein the indexing disc has The positioning surface in contact with the elastic device is provided with a pit or a ridge L for positioning the elastic device.
  • the positioning surface of the indexing plate comprises an annular bottom surface, a stepped surface, and an annular bottom
  • the transition slope between the surface and the step surface, the end side of the annular bottom surface is provided with a first positioning side surface, and the end portion of the step surface is provided with a second positioning side surface.
  • the resilient means includes a top pin and a top post spring disposed under the top pin.
  • the outer casing includes an upper cover and an outer casing fixedly connected to the upper cover, the outer casing is sleeved on the outer surface of the cylindrical valve in a rotatable or up-and-down motion, and the outer circumferential surface of the indexing plate is provided with at least one mating bayonet, and the outer casing has an extension Enter at least one drive button that matches the bayonet.
  • the top surface of the indexing plate is flush with the top end of the outer casing, and a pressing plate is disposed between the top surface of the indexing plate and the inner top surface of the upper cover, and the pressing plate is fixed with the indexing plate.
  • the upper part of the cylindrical valve body is provided with a return spring seat, and the inner wall of the outer casing has an annular positioning boss, and a return spring is arranged between the return spring seat of the cylindrical valve body and the annular positioning boss of the outer casing.
  • the stroke guide has a first cavity therein, the valve core has a threaded rod deep into the end of the cavity, the rod is connected with the spool nut disposed in the first cavity, and is tightly tightened by the first fastening screw solid.
  • an end of the spiral guide that is in contact with the compression spring is recessed inwardly to form a compression spring seat bore.
  • the outer side of the stroke guide has at least one stroke guide positioning surface extending in the axial direction
  • the spiral guide has a second cavity therein
  • the second cavity has at least one of the stroke guide positioning portions A spiral guide positioning surface.
  • the top of the stroke guiding rod is provided with a connecting surface
  • the indexing plate is provided with a screw hole
  • the second fastening screw fixes the indexing plate to the connecting surface of the stroke guiding rod.
  • the tubular valve body has an air inlet communicating with the device to be pressure-restricted; the outer casing drives the travel guide rod to rotate or moves up and down; the spiral guide member is sleeved up and down on the stroke guide rod; the spring is pressed, one end Pressed on the valve core, the other end is placed on the spiral guide, the indexing plate is fixed on the top of the stroke guide and driven by the outer sleeve; the elastic device is arranged on the top of the cylindrical valve body, and the indexing disc has elastic means The locating surface that is in contact with each other is pressed or loosened by the spiral guide to be disposed in the cylindrical valve body to be sealingly engaged with the intake port.
  • the valve core which is tightly fitted or loosely fitted to the air inlet by the screw guide can be combined with the linear motion to adjust the degree of depression of the valve core, thereby accurately adjusting the valve core.
  • the pressure of the pressure limiting device In addition, the adjustment of the indexing plate and the elastic device can more accurately adjust the pressure of the pressure limiting device, so that the pressure control valve is simpler, more effective and more accurate in positioning and limiting the pressure value.
  • the outer casing can be moved upwards, and the stroke guide 4 and the spool can be moved upward to make the spool out of the air inlet. Fast exhaust function.
  • the present invention has other objects, features and advantages.
  • FIG. 1 shows an external front view structure of a pressure control valve according to an embodiment of the present invention
  • FIG. 2 shows an exploded view of the pressure control valve of FIG. 1.
  • FIG. a sectional structure of the pressure control valve, wherein the scale value indicating plate corresponds to a zero point;
  • FIG. 4 shows a sectional structure of the pressure control valve of FIG. 1, wherein the scale value indicating the disk corresponds to the maximum pressure value;
  • FIG. 5 shows Figure 3 shows the perspective structure of the indexing disk of Figure 5;
  • Figure 7 shows the three-dimensional structure of the inner casing of Figure 2;
  • Figure 8 shows from the other side Figure 3 shows the front view of the inner casing of Figure 7;
  • Figure 10 shows the cross-sectional structure of the inner casing of Figure 7;
  • Figure 11 shows Figure 7 a top view structure of the inner casing;
  • Figure 12 is a perspective view of the outer casing of Figure 2;
  • Figure 13 is a cross-sectional view of the outer casing of Figure 12;
  • Figure 14 is a cross-sectional view of the outer casing of Figure 12;
  • 12 is a top view of the outer casing of FIG.
  • FIG. 16 shows a silk-screen circumferential development of the outer casing of FIG. 12;
  • FIG. 17 shows the three-dimensional structure of the valve core of FIG.
  • Figure 19 shows the three-dimensional structure of the stroke guide of Figure 2;
  • Figure 20 shows the cross-sectional structure of the stroke guide of Figure 19;
  • Figure 21 shows the stroke guide of Figure 19.
  • Figure 2 shows the three-dimensional structure of the locking sleeve of Figure 2;
  • Figure 23 shows the top view of the locking sleeve of Figure 22;
  • Figure 24 shows the locking sleeve of Figure 22
  • Figure 25 shows the three-dimensional structure of the spiral guide of Figure 2;
  • Figure 26 shows the top view of the spiral guide of Figure 25;
  • Figure 27 shows the section of the spiral guide of Figure 26
  • Figure 28 shows the three-dimensional structure of the pressure plate of Figure 2;
  • Figure 29 shows the three-dimensional structure of the valve seat of Figure 2;
  • Figure 30 shows a plan view of the valve seat of Figure 29;
  • Figure 31 shows a cross-sectional structure of the valve seat of Figure 29;
  • Figure 32 shows the three-dimensional structure of the scale value indicating plate of Figure 2;
  • Fig. 34 is a cross-sectional view showing the scale of the dial in Fig. 32
  • Fig. 35 is a view showing the three-dimensional structure of the upper cover in Fig. 2
  • the cross-sectional structure of the upper cover in Fig. 35 is shown
  • Fig. 37 shows the three-dimensional structure of the threaded sleeve of Fig. 2
  • Fig. 38 shows the cross-sectional structure of the threaded sleeve of Fig. 37.
  • the pressure control valve of the present invention can be applied to an anesthesia machine, but is not limited to an anesthesia machine, and can be applied to other devices.
  • 1 shows an external front view structure of a pressure control valve according to an embodiment of the present invention
  • FIG. 2 shows an exploded view of the pressure control valve of FIG. 1
  • FIGS. 3 and 4 show the pressure control of FIG.
  • a cylindrical valve body including a valve seat 4 and an inner casing 7 coaxially fixed to the valve seat 4
  • fixedly sleeved in the inner casing 7 The upper locking sleeve 20, the indexing plate 14 disposed on the inner casing 7 coaxially with the inner casing 7, the outer casing (including the outer casing 9 and the upper cover 15), the pressure plate 17 covering the outer casing 9 and the indexing plate 14,
  • a spiral guide 18 coaxially disposed in the inner casing 7, a stroke guide 16 coaxially disposed in the spiral guide 18, and a spool 2 coaxially disposed at a lower end of the stroke guide 16 are enclosed in the outer casing 9 and the upper cover 15, the first sealing member 31, the second sealing member 30, the damping pad 8, the fourth sealing member 28, the threaded sleeve 5, the scale value indicating plate 6, and the like outside the pressure plate 17.
  • the pressure control valve comprises: a cylindrical valve body including a bottom wall and a side wall, the bottom wall having an air inlet 4A communicating with the device to be pressure-restricted, and having at least one guide on the side wall pin 21;
  • the valve core 2 is arranged in the cylindrical valve body, and is sealingly matched with the air inlet 4A;
  • the stroke guide is 16 and the lower end is connected with the valve core 2;
  • the outer sleeve is rotatably or vertically moved outside the cylindrical valve body, and is driven
  • the stroke guide 16 is rotated or moved up and down, and the spiral guide 18 is sleeved on the stroke guide 16 so as to be movable up and down, and the outer surface thereof is provided with a spiral groove for inserting at least one guide pin 21;
  • the compression spring 22 One end is pressed against the valve core 2, and the other end is placed on the spiral guide 18, and the fine adjustment structure includes: an indexing plate 14 fixed to the top of the stroke guide 16 and driven by the outer s
  • the outer casing is rotatably sleeved on the outside of the cylindrical valve body, and the driving stroke guide rod is rotated, and the belt is rotated with the spiral guide member, and the spiral guide member rotates simultaneously.
  • the indexing plate can move up and down relative to the travel guide, press the spring, one end is pressed against the valve core, the other end is pressed against the spiral guide, the indexing plate is fixed on the top of the stroke guide, driven by the outer sleeve; the elastic device is set at a top end of the cylindrical valve body, the indexing plate has a positioning surface in contact with the elastic device, so that the valve body is tightly fitted or loosely fitted in the cylindrical valve body by the spiral guide member, wherein the above-mentioned component
  • the rotation and the linear motion can be combined to adjust the degree of depression of the valve core, and the pressure of the pressure limiting device can be accurately adjusted by adjusting the indexing plate and the elastic device, so that the pressure control valve can easily locate and limit the pressure value.
  • the cylindrical valve body includes a valve seat 4 and an inner casing 7.
  • the valve seat 4 is provided with the air inlet 4A connected to the pressure limiting device, and the inner casing 7 is cylindrical and fixed to the valve seat 4, and the inner casing 7 is provided with at least one guiding pin 21.
  • Figure 29 shows a three-dimensional structure of the valve seat of Figure 2;
  • Figure 30 shows a top view of the valve seat of Figure 29;
  • Figure 31 shows a cross-sectional structure of the valve seat of Figure 29.
  • the bottom wall of the valve seat 4 has an intake port 4A and an exhaust port 4B; and at least one exhaust port 4B may be provided for exhausting.
  • the intake port 4A and the exhaust port 4B are fitted to the circuit (i.e., the device to be pressure-restricted), for example, can be assembled to the anesthesia circuit.
  • the pressure control valve of the present invention can be applied to other various pressure limiting devices.
  • the separate arrangement of the cylindrical valve body facilitates the connection with the pressure limiting device and facilitates the installation of the cylindrical valve body itself.
  • the exhaust port 4B is not limited to being disposed on the valve seat 4, but may be provided on the inner casing 7 or other components.
  • the outer wall of the upper portion of the valve seat 4 has an external thread 4E for screwing with the threaded sleeve 5.
  • the inner wall of the valve seat has a sealing edge extending around the lower end of the inner casing to facilitate sealing.
  • a first sealing member 31 for sealing the air inlet 4A, disposed on the air inlet 4A, for example, may be sleeved on the notch 4C at the bottom of the air inlet 4A;
  • the second sealing member 30 includes a space for separating the inner casing 7 and the seal of the valve seat 4 and the seal separating the air port 4B from the atmosphere, the two seals may be, for example, seals, and the models may be the same or different.
  • the two seals of the second seal member 30 are respectively sleeved on the notches 4D of the valve seat 4 and the notches 74 of the inner casing 7.
  • the valve seat 4 has a pin hole 4F for fixed connection with the inner casing 7.
  • valve seat 4 is connected to a device requiring pressure control, and the structure shown in Figs. 3 and 4 can be used for quick insertion and removal.
  • thread structure can also be used for coupling.
  • 7 to 11 show the structure of the inner casing 7.
  • Figure 7 shows the three-dimensional structure of the inner casing of Figure 2;
  • Figure 8 shows the three-dimensional structure of the inner casing of Figure 7 from the other side;
  • Figure 9 shows the front view of the inner casing of Figure 7;
  • Fig. 10 shows a cross-sectional structure of the inner casing of Fig. 7;
  • Fig. 11 shows a plan view of the inner casing of Fig. 7.
  • the inner casing 7 is cylindrical and is used to connect the valve seat 4 to provide a basis for fixing and coupling other parts.
  • the inner casing 7 has a pin hole 79, and the inner casing 7 is coaxially fixed to the valve seat 4 by a positioning pin 3 provided therein.
  • the locating pin 3 positions the entire pressure control valve in a circumferential direction on the valve seat 4 and the device requiring pressure control.
  • the outer casing 7 has a plurality of grooves on the outer side.
  • the slot 71 is provided with a return spring seat, and the return spring seat can be used with various suitable components, such as the locking sleeve 20, and of course other components;
  • the slot 72 is provided with a damping pad ⁇ 8, the damping pad 8 serves as a sealing function, which can also effectively prevent direct metal contact between the inner casing 7 and the outer casing 9 for damping;
  • the groove 73 for fixing with the scale value indicating plate 6;
  • the groove 74 A second seal 30 is provided thereon.
  • a second pad 10 is disposed between the outer casing and the return spring 11 in contact therewith.
  • the inner casing 7 has a face 7C which can cooperate with the second pad 10 to compensate for the length error of the return spring 11 by adjusting the thickness or the number of the pad 10.
  • the side wall of the inner casing 7 is provided with a hole 76 in which the guide pin 21 is fixed to provide guiding and supporting action for the spiral guide 18.
  • the holes 76 may be provided in three, evenly distributed along the sides of the inner casing 7, and of course, may be set to other numbers.
  • the inner casing 7 has a boss 75 which serves as a position limiting function.
  • the side faces 75A and 75B of the boss 75 are positioning side faces.
  • the boss 75 has a hole 78 extending axially along the inner casing 7 for receiving the top pin 13, and a blind hole 77 is provided below the boss 75 for accommodating the top post spring 12 for jacking the top pin 13.
  • Figure 37 shows the three-dimensional structure of the threaded sleeve of Figure 2;
  • Figure 38 shows the cross-sectional structure of the threaded sleeve of Figure 37.
  • the threaded sleeve 5 connects the inner casing 7 with the valve seat 4 and locks the relative position of the inner casing 7 and the valve seat 4.
  • the threaded sleeve 5 has an internal thread 53 for connection with the valve seat 4, and the threaded sleeve 5 has a positioning portion 51 To lock the relative position of the inner casing 7 and the valve seat 4.
  • the arrangement of the threaded sleeve 5 facilitates the connection of the inner casing 7 to the valve seat 4 and locks the relative position of the inner casing 7 and the valve seat 4.
  • Fig. 25 to 27 show the structure of the spiral guide 18.
  • Fig. 25 shows a three-dimensional structure of the spiral guide of Fig. 2;
  • Fig. 26 shows a plan view of the spiral guide of Fig. 26;
  • Fig. 27 shows a cross-sectional structure of the spiral guide of Fig. 26.
  • the spiral guide 18 can be made of plastic or metal, having spiral grooves, which can be equidistant or unequal, in the preferred embodiment unequal of.
  • a guide pin 21 fixed to the inner casing 7 acts on the spiral groove to provide guiding and supporting action for the spiral guide 18.
  • the spiral guide 18 During the pressure adjustment, while the spiral groove rotates along the guide pin 21, the spiral guide 18 also generates radial movement, compresses or loosens the pressure spring 22, and adjusts the length of the pressure spring 22.
  • the spiral guide 18 has a second cavity therein, and the second cavity has a positioning surface 181 for cooperatively connecting with the stroke guide 16.
  • the positioning surface 181 can be three, which is convenient for positioning. Of course, the positioning surface 181 can also be other numbers.
  • the upper port of the helical guide 18 has a recess 185.
  • the lower portion of the spiral guide member 18 has a cavity to form a spring seat hole for receiving the pressure spring 22.
  • the pressure spring 22 is placed on the cavity top surface 183 of the spiral guide 18 through the first pad 19, thereby avoiding direct contact between the metal and the metal, and compensating for the length error of the pressure spring 22 by the number or thickness thereof. , to make the pressure control valve set pressure value more accurate.
  • 19 to 21 show the structure of the stroke guide.
  • Fig. 19 shows a three-dimensional structure of the stroke guide of Fig. 2;
  • Fig. 20 shows a cross-sectional structure of the stroke guide of Fig. 19;
  • Fig. 21 shows a front view of the stroke guide of Fig. 19.
  • the stroke guide 16 may be made of metal, but is not limited to metal, and is coupled to the indexing plate 14, the spiral guide 18, and the spool 2 to transmit the rotational motion of the indexing disc to the helical guide 18.
  • the upper portion of the travel guide 16 has a connecting surface 163, and the second fastening screw 27 passes through a screw hole 148 in the indexing plate 14 to fix the indexing plate 14 to the connecting surface 163.
  • the number of connecting faces 163 can be three, which is convenient for positioning, and of course, other numbers are also possible.
  • connection between the indexing plate 14 and the stroke guide rod 16 can also be changed to a threaded structure by changing the upper portion of the stroke guide rod 16 into a threaded hole, and the circular hole on the annular table of the indexing plate 14 is changed into an internal thread. Screwed.
  • the stroke guide 16 can carry the spiral guide 18 to rotate in the circumferential direction, and the spiral guide 18 can be moved up and down along the stroke guide 4 by the guide pin 21.
  • the lower portion of the travel guide 16 has a locating surface 161 that cooperates with a locating surface 181 in the helical guide 18.
  • the stroke guide 16 is hollow and has a cavity therein to accommodate the spool nut 23 and the first fastening screw 29.
  • the spool 2 has a threaded rod 2A deep into the end of the cavity, the rod 2A being connected to a spool nut 23 provided in the cavity and fastened by a first fastening screw 29.
  • Figure 17 shows the three-dimensional structure of the valve body of Figure 2
  • Figure 18 shows the cross-sectional structure of the valve body of Figure 17.
  • the spool 2 cooperates with the intake port 4A on the valve seat 4 to act as a seal under the pressure of the pressure spring 22.
  • the upper portion of the spool 2 has 4 stems 2 A for connection to the spool nut 23.
  • the bottom 2B of the spool 2 has a shape adapted to the intake port 4A of the valve seat 4 so as to seal the intake port 4A.
  • the spool nut 23, which connects the spool 2 and the stroke guide 16, can effectively fix and adjust the length of the spool 2 screwed into the spool nut 23 by the first fastening screw 4.
  • the spool 2 is fixed to the stroke guide 16 by the spool nut 23 and the first fastening screw 4.
  • the pressure spring 22 defines the magnitude of the pressure of the pressure regulating valve according to the length of its compression length.
  • Fig. 5 shows the three-dimensional structure of the indexing disk of Fig. 2.
  • the indexing plate 14 has a function of providing a pressure indexing function (i.e., fine adjustment function), which cooperates with the boss 75 on the inner casing 7 to provide an effective zero point and a maximum range limit function.
  • the indexing disc 14 has three through-axis axial fitting slots 143 in the circumferential direction, and a cylindrical hole 149 for assembly in the center of each slot; a mating bayonet 141 is provided between the two fitting slots 143, It is used to coordinate with the husk shell 9.
  • Three screw holes 147 are arranged on the upper end surface of the indexing plate 14 to be connected with the screw 4 to be fixed with the pressure plate 17.
  • the central bore 142 is for mating with the travel guide 16.
  • the assembly notch 143 and the screw hole 147 are not limited to three, and may be other suitable numbers.
  • Fig. 6 shows a bottom view structure of the indexing disk of Fig. 5.
  • the indexing plate 14 has an annular boss 144.
  • the side of the boss 144 and the like 3 are provided with three screw holes 148 for fixing the connecting surface 163 of the stroke guide 16 and the end surface of the boss 144.
  • Three screw holes 147 are equally spaced. Indexing plate
  • the bottom surface 14 is provided with spherical recesses 145 in the circumferential direction for cooperation with the top pin 13 for precise positioning.
  • Top The pin 13, by the action of the top post spring 12, the spherical surface of the top end cooperates with the corresponding spherical recess on the indexing plate, thereby improving the accuracy, simplicity and convenience of adjusting the pressure value.
  • the use of holes can also play the role of positioning fit.
  • the indexing disk 14 has an annular bottom surface 146, and a stepped surface, and a transitional ramp between the annular bottom surface 146 and the stepped surface.
  • the top pin 13 rotates on the annular bottom surface 146 with respect to the indexing plate 14.
  • the end of the annular bottom surface 146 is provided with a step with a transition slope 14C, the step has a stepped surface, and the end surface of the annular bottom surface 146 has the other end.
  • a positioning side surface 14A and an end portion of the step surface are provided with a second positioning side surface 14B.
  • the positioning surface of the indexing plate may be an inclined annular bottom surface having a starting end and a terminating end corresponding to the positioning side faces 14A, 14B, and also functioning as the first positioning side face 14A and the second positioning side face 14B.
  • 12 to 16 show the structure of the outer casing 9.
  • Figure 12 is a perspective view of the outer casing of Figure 2;
  • Figure 13 is a cross-sectional view of the outer casing of Figure 12;
  • Figure 14 is a cross-sectional view of the outer casing of Figure 12;
  • the outer casing 9 has three bosses 91 at equal intervals in the circumferential direction, and the boss 91 has external threads for connection with the upper cover 15, and the top end of each boss 91 is again protruded inward to form a driving key for extending into the branch.
  • the mating bayonet 141 of the dial 14 drives the indexing disc 14 to rotate; the lower end of the boss 91 has a recess 95 for mounting and fixing the fourth compact 28; the inside of the casing 9 has an annular positioning boss 97 for supporting The return spring 11; the second pad 10 can be pressed between the annular positioning boss 97 of the outer casing 9 and the return spring 11; the outer surface 93 of the outer casing 9 is marked with a pressure scale of the pressure control valve.
  • the outer casing 9 is sleeved on the inner casing so as to be rotatable or movable up and down.
  • the outer circumferential surface of the indexing plate 14 is provided with at least one mating bayonet 141, and the outer casing 9 has a driving key extending into the at least one mating bayonet, so that the outer casing 9 is suitable for driving the indexing disc 14.
  • Figure 16 shows a silk screen circumferential development of the outer casing of Figure 12. As shown, the silkscreen of the outer casing
  • the circular expansion icon shows the corresponding scale value, for example, including: 0 degrees, 45 degrees, 72 degrees, 126 degrees, 180 degrees, 234 degrees, 288 degrees, 324 degrees, 360 degrees. These values correspond to the different pressing values of the pressing springs and the different angles of rotation of the indexing plate 14, corresponding to the different pits on the indexing plate 14.
  • Figure 22 shows the three-dimensional structure of the locking sleeve of Figure 2;
  • Figure 23 shows the top view of the locking sleeve of Figure 22;
  • Figure 24 shows the cross-sectional structure of the locking sleeve of Figure 22.
  • the locking sleeve 20 is used to secure the position of the return spring 11.
  • the locking sleeve 20 is equidistantly distributed in the circumferential direction with three through-axis axial fitting slots, and three circular holes 201 are distributed in the circumferential direction of the cylindrical surface of the locking sleeve 20, and are located at the center of the cylindrical surface between the adjacent grooves.
  • the fastening screw 25 passes through the circular hole 201, and the locking sleeve 20 is fixed to the groove 71 of the inner casing 7.
  • the fitting notches and the circular holes 201 of the locking sleeve 20 are not limited to three, and may be other suitable numbers.
  • the return spring 11 is a compression spring for providing a reset function during rapid exhaust, and is sleeved on the outer side of the inner casing 7 between the annular positioning boss 97 of the outer casing 9 and the lock sleeve 20.
  • the second pad 10 may be padded between the annular positioning boss 97 pressed against the outer casing 9 and the return spring 11, which cooperates with the 7C surface of the inner casing 7 by adjusting the thickness of the spacer of the second pad 10 or Quantity, compensates for the return spring length error.
  • the top end of the return spring 11 is placed on the locking sleeve 20, and the downward pressure is generated by the vertical movement of the bottom end.
  • the reset design has a simple structure and good effect, and the operation of the rapid exhaust function is not solved.
  • Figure 28 shows the three-dimensional structure of the pressure plate of Figure 2.
  • the pressure plate 17 is a circular plate which is placed on the indexing plate 14 and the outer casing 9 and has a hole 171 formed therein for coupling with the indexing plate 14 by means of a screw 26 for fixing the outer casing 9 and the indexing plate 14. Relative position. When the air is quickly exhausted, the casing 9 or the upper cover 15 can be lifted, and the indexing plate 14 can be lifted by the pressure plate 17, so that the valve core 2 is finally lifted for rapid exhaust.
  • Figure 35 shows the three-dimensional structure of the upper cover of Figure 2;
  • Figure 36 shows the cross-sectional structure of the upper cover of Figure 35. As shown, the upper cover 15 is sleeved outside the outer casing 9.
  • the top surface of the indexing plate 14 is flush with the top end of the outer casing 9, and a pressure plate 17 is provided between the top surface of the indexing plate 14 and the inner top surface of the upper cover, and the pressure plate 17 is fixed to the indexing plate 14.
  • the upper cover 15 is disposed on the pressure plate 17, and its inner side is threaded to be coupled to the outer casing 9.
  • a fourth seal 28 is disposed between the upper cover 15 and the outer casing 9 to facilitate sealing.
  • the upper cover 15 is easy to rotate during operation, thereby driving other components to move.
  • Figure 32 shows the three-dimensional structure of the scale indicating disk in Figure 2;
  • Figure 33 shows the top view of the scale indicating disk in Figure 32;
  • Figure 34 shows a cross-sectional view of the scale indicating disk in Figure 32 structure.
  • the scale value indicating plate 6 has a screw hole 61 through which a fastening screw (not shown) is fixed to the groove 73 of the inner casing 7 through the screw hole 61; the scale value indicating plate 6 has a graduated groove 63 that cooperates with the value on the outer side surface 93 of the outer casing 9 to indicate the value of the pressure adjustment.
  • the scale value indicates that the setting of the disc 6 is convenient for reading the pressure value. The working principle of the present invention is described below. When the pressure adjustment is performed, the upper cover 15 is rotated, which drives the outer casing 9 to rotate together, and the outer casing 9 drives the rotary indexing table 14 to rotate by the boss 91 at the top end.
  • the indexing plate 14 is respectively fixed to the pressure plate 17, and the stroke guide 16 is fixed by the fastening screw 26 and the second fastening screw 27, so that the pressure plate 17, the stroke guide 16 rotates synchronously.
  • the travel guide 16 drives the spiral guide 18 to rotate together through the mating plane thereon.
  • the spiral belt rotates toward the member 18, the spiral groove thereon rotates along the guide pin 21, and drives the entire spiral guide 18 downward along the stroke guide. Movement, compression of the compression spring 22.
  • the top cover 15 has a different rotation angle, and the length of the pressure spring 22 corresponds to a specific value. That corresponds to a different opening pressure.
  • the reverse rotation corresponds to the extension of the compression spring 22.
  • the top pin 13 in the boss of the inner casing 7 is screwed to the spherical groove corresponding to the scale of the indexing plate and is ejected by the fixed pin spring 12, and the spherical boss on the top pin 13 enters the spherical groove 145.
  • the positioning of the pressure value accuracy of the pressure regulating valve is more accurately improved. It also improves the feel of the operation.
  • the spherical surface on the 13 begins to contact the inclined surface 14C on the indexing plate 14, and continues to rotate, and the top pin 13 pushes up the indexing plate 14, thereby driving the stroke guide 16 and the spiral guide 18 to cause the spool 2 to leave the air inlet.
  • the pressure regulating valve is in a zero state, that is, a state in which it is connected to the atmosphere.
  • the second positioning side surface 14B on the inclined surface 14C side thereof is in contact with the boss side surface 75B on the inner casing 7, and can no longer be rotated, thereby realizing the zero point limiting function.
  • the first positioning side surface 14A on the indexing plate 14 is in contact with the side surface 75A of the boss on the inner casing 7, and can no longer be rotated when jt ⁇ , the state in which the pressure reaches the maximum defined pressure.
  • the screw guide 18 is rotated to the lowest position, and the pressure spring 22 is in the shortest state.
  • the upper cover 15 is lifted up, then the upper cover 15 drives the outer casing 9, the indexing plate 14, the pressure plate 17, and the stroke guide 16 is lifted up together, and the stroke guide 16 drives the spool 2 Lift up to make the spool 2 leave the air inlet.
  • the state of the pressure regulating valve is the same as that at the zero point, that is, the rapid exhausting state is realized.
  • the outer casing 9 compresses the return spring 11, and the outer casing 9 is pressed downward by the pressure of the return spring 11, under the action of the return spring 11, the pressure regulating valve Go back to the state before lifting.

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Description

压力控制阀 技术领域 本发明涉及一种压力控制阀。 背景技术 麻醉机是麻醉手术的重要器械,麻醉医师利用它来达到麻醉和救治病人 的目的。 麻醉回路是麻醉机实现循环紧闭式麻醉不可缺少的重要装置。 在麻 醉回路手动通气的状态下, 回路中压力过高, 使病人肺部压力过大, 对病人 造成一定的伤害; 压力过低, 不能满足供气要求。 而且, 不同状态下所使用 压力有一定的区别, 若气路压力为一恒定值, 则不能满足对压力变化的需求。 在麻醉回路上设置有压力控制阀, 用于对压力值的限位和定位。 在实现本发明的过程中 ,发明人发现现有的压力控制阀对压力值的限位 和定位不够准确。 发明内容 本发明旨在提供一种压力控制阀, 以解决上述问题。 为此, 本发明提供一种压力控制阀, 包括: 筒状阀体, 具有底壁和侧壁, 底壁上包括与待限压装置连通的进气口, 侧壁上具有至少一导向销, 筒状阀 体具有连通至排气系统的排气口; 阀芯, 设置于筒状阀体中, 与进气口密封 配合; 行程导杆, 下端连接阀芯; 外套, 可转动或上下运动地套设于筒状阀 体外, 驱动行程导杆转动或上下运动, 螺旋导向件, 可上下移动地套设在上 述行程导杆上, 其外表面上设有供至少一导向销插入的螺旋槽; 压紧弹簧, 一端压紧于阀芯, 另一端顶在螺旋导向件上。 进一步地, 压力控制阀还包括: 精调结构, 其包括: 分度盘, 固定于行 程导杆的顶部, 由外套驱动; 弹性装置, 设置在筒状阀体的顶端, 其中, 分 度盘具有与弹性装置相接触的定位表面, 定位表面上分布有供弹性装置定位 的凹坑或孑 L。 进一步地, 分度盘的定位表面包括环形底面、 台阶面、 以及位于环形底 面和台阶面之间的过渡斜面, 环形底面的端部侧面设有第一定位侧面、 台阶 面的端部设有第二定位侧面。 进一步地, 弹性装置包括顶销以及设置在顶销下的顶柱弹簧。 进一步地, 外套包括上盖以及与上盖固定连接的外壳, 外壳可转动或上 下运动地套设在筒状阀体外, 分度盘的外圓周表面上设有至少一配合卡口, 外壳具有伸入至少一配合卡口的驱动键。 进一步地, 分度盘的顶面和外壳的顶端相齐平, 分度盘的顶面与上盖的 内顶面之间设有压板, 压板与分度盘固定在一起。 进一步地, 筒状阀体的上部设有复位弹簧座, 外壳的内壁上具有环形定 位凸台, 筒状阀体的复位弹簧座和外壳的环形定位凸台之间设有复位弹簧。 进一步地, 行程导杆内具有第一空腔, 阀芯具有深入空腔端部的具有螺 紋的杆,杆与设置在第一空腔中的阀芯螺母连接, 并通过第一紧固螺钉紧固。 进一步地,螺旋导向件的与压紧弹簧相接触的一端向内凹形成压紧弹簧 座孔。 进一步地, 行程导杆外侧面具有沿轴向延伸的至少一行程导杆定位面, 螺旋导向件内部具有第二空腔, 第二空腔内具有与至少一行程导杆定位部相 配合的至少一螺旋导向件定位面。 进一步地, 行程导杆的顶部设有连接面, 分度盘设有螺孔, 第二紧固螺 钉将分度盘固定在行程导杆的连接面上。 由于筒状阀体具有与待限压装置连通的进气口; 外套, 驱动行程导杆转 动或上下运动; 螺旋导向件, 可上下移动地套设在上述行程导杆上; 压紧弹 簧, 一端压紧于阀芯, 另一端顶在螺旋导向件上, 分度盘, 固定于行程导杆 的顶部, 由外套驱动; 弹性装置, 设置在筒状阀体的顶端, 分度盘具有与弹 性装置相接触的定位表面, 所以通过螺旋导向件压紧或松弛设置于筒状阀体 中与进气口密封配合的阀芯。 利用上述结构, 通过螺旋导向件压紧或松弛设 置于筒状阀体中与进气口密封配合的阀芯, 可以将转动与直线运动结合起来 调整阀芯的压下程度, 因而可以准确调整待限压装置的压力。 另外, 通过分 度盘、 弹性装置的调整就可以更准确调整待限压装置的压力, 从而压力控制 阀对压力值的定位和限位更简单、 有效和准确。 另外, 在任何位置, 均可以 使外套向上运动, 带动行程导 4干和阀芯向上运动, 使阀芯脱离进气口, 实现 快速排气功能。 除了上面所描述的目的、 特征和优点之外, 本发明还有其它的目的、 特 征和优点。 下面将参照图, 对本发明的其它的目的、 特征和效果作进一步详 细的说明。 附图说明 此处所说明的附图用来提供对本发明的进一步理解,构成本申请的一部 分, 本发明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的 不当限定。 在附图中: 图 1示出了根据本发明实施例的压力控制阀的外部主视结构; 图 2示出了图 1中的压力控制阀的爆炸图; 图 3示出了图 1中的压力控制阀的剖面结构, 其中, 刻度值指示盘对应 于零点; 图 4示出了图 1中的压力控制阀的剖面结构, 其中, 刻度值指示盘对应 于最大压力值; 图 5示出了图 2中的分度盘的立体结构; 图 6示出了图 5中的分度盘的仰视结构; 图 7示出了图 2中的内壳的立体结构; 图 8从另一侧示出了图 7中的内壳的立体结构; 图 9示出了图 7中的内壳的主视结构; 图 10示出了图 7中的内壳的剖视结构; 图 11示出了图 7中的内壳的俯视结构; 图 12示出了图 2中的外壳的立体结构; 图 13示出了图 12中的外壳的主视结构; 图 14示出了图 12中的外壳的剖视结构; 图 15示出了图 12中的外壳的俯视结构; 图 16示出了图 12中的外壳的丝印圓周展开图; 图 17示出了图 2中的阀芯的立体结构; 图 18示出了图 17中的阀芯的剖视结构; 图 19示出了图 2中的行程导杆的立体结构; 图 20示出了图 19中的行程导杆的剖视结构; 图 21示出了图 19中的行程导杆的主视结构; 图 22示出了图 2中的锁紧套的立体结构; 图 23示出了图 22中的锁紧套的俯视结构; 图 24示出了图 22中的锁紧套的剖视结构; 图 25示出了图 2中的螺旋导向件的立体结构; 图 26示出了图 25中的螺旋导向件的俯视结构; 图 27示出了图 26中的螺旋导向件的剖视结构; 图 28示出了图 2中的压板的立体结构; 图 29示出了图 2中的阀座的立体结构; 图 30示出了图 29中的阀座的俯视结构; 图 31示出了图 29中的阀座的剖视结构; 图 32示出了图 2中的刻度值指示盘的立体结构; 图 33示出了图 32中的刻度值指示盘的俯视结构; 图 34示出了图 32中的刻度值指示盘的剖视结构; 图 35示出了图 2中的上盖的立体结构; 图 36示出了图 35中的上盖的剖视结构; 图 37示出了图 2中的螺紋套的立体结构; 以及 图 38示出了图 37中的螺紋套的剖视结构。 具体实施方式 下面将参考附图并结合实施例, 来详细说明本发明。 本发明的压力控制阀可应用于麻醉机上, 但不局限于麻醉机, 还可应用 于其他设备上。图 1示出了根据本发明实施例的压力控制阀的外部主视结构; 图 2示出了图 1中的压力控制阀的爆炸图; 图 3和图 4示出了图 1中的压力 控制阀两种状态下的剖面结构。 结合图 1至图 4 , 可以看出, 图中的部件有: 筒状阀体 (包括阀座 4以及同轴地固定在阀座 4上的内壳 7 )、 固定地套设在 内壳 7上的锁紧套 20、 位于内壳 7上与内壳 7同轴设置的分度盘 14、 外套 (包括外壳 9和上盖 15 )、 盖在外壳 9和分度盘 14上的压板 17、 同轴地设 置在内壳 7内的螺旋导向件 18、 同轴地设置在螺旋导向件 18内的行程导杆 16、 同轴地设置在行程导杆 16的下端的阀芯 2、 包围在外壳 9和压板 17外 的上盖 15、 第一密封件 31、 第二密封件 30、 阻尼垫圏 8、 第四密封件 28, 螺紋套 5 , 刻度值指示盘 6等部件。 其中, -据本发明实施例的压力控制阀, 包括: 筒状阀体, 包括底壁和 侧壁,底壁上具有与待限压装置连通的进气口 4A, 侧壁上具有至少一导向销 21 ; 阀芯 2, 设置于筒状阀体中, 与进气口 4A密封配合; 行程导才干 16, 下 端连接阀芯 2; 外套, 可转动或上下运动地套设于筒状阀体外, 驱动行程导 杆 16转动或上下运动, 螺旋导向件 18, 可上下移动地套设在上述行程导杆 16上, 其外表面上设有供至少一导向销 21插入的螺旋槽; 以及压紧弹簧 22 , 一端压紧于阀芯 2 , 另一端顶在螺旋导向件 18上, 精调结构, 其包括: 分度 盘 14, 固定于行程导杆 16的顶部, 由外套驱动; 弹性装置, 设置在筒状阀 体的顶端, 其中, 分度盘 14 具有与弹性装置相接触的定位表面, 定位表面 上分布有供弹性装置定位的凹坑或孔。 由于筒状阀体具有与待限压装置连通的进气口, 外套, 可转动地套设于 筒状阀体外, 驱动行程导杆转动, 同时带同螺旋导向件转动, 螺旋导向件转 动的同时, 可相对行程导杆上下移动, 压紧弹簧, 一端压紧于阀芯, 另一端 压紧于螺旋导向件, 分度盘, 固定于行程导杆的顶部, 由外套驱动; 弹性装 置, 设置在筒状阀体的顶端, 分度盘具有与弹性装置相接触的定位表面, 所 以通过螺旋导向件压紧或松弛设置于筒状阀体中与进气口密封配合的阀芯, 其中, 上述部件可以将转动与直线运动结合起来调整阀芯的压下程度, 通过 分度盘、 弹性装置的调整就可以准确调整待限压装置的压力, 从而压力控制 阀对压力值的定位和限位更简单、 有效和准确, 同时, 在任何位置, 均可以 使外套向上运动, 带动行程导杆和阀芯向上运动, 使阀芯脱离进气口, 实现 快速排气功能。 下面详细描述本发明的压力控制阀的各部件结构。 筒状阀体包括阀座 4和内壳 7。 阀座 4, 设有连通至待限压装置的所述 进气口 4A; 以及内壳 7, 为筒状, 固定在阀座 4上, 内壳 7上设有至少一导 向销 21。 图 29示出了图 2中的阀座的立体结构; 图 30示出了图 29中的阀 座的俯视结构; 图 31示出了图 29中的阀座的剖视结构。 如图 29、 图 30、 图 31所示, 阀座 4的底壁具有进气口 4A以及排气口 4B; 排气口 4B至少为 一个, 可以为多个, 以便进行排气。 进气口 4A和排气口 4B装配到回路(即 待限压装置) 上, 例如, 可以装配到麻醉回路上。 当然, 本发明的压力控制 阀可以适用于其他各种待限压装置。 筒状阀体的分体设置便于和待限压装置 接通, 也便于筒状阀体自身的安装。 当然, 排气口 4B不仅限于设置在阀座 4 上, 也可以设置在内壳 7或其他部件上。 阀座 4的上部的外壁具有外螺紋 4E以便和螺紋套 5进行螺接。 阀座内 壁具有环绕内壳下端延伸的密封边缘, 这样便于密封。 如图 3、 图 4所示, 第一密封件 31 , 用于密封进气口 4A, 设置在进气口 4A上, 例如, 可以套在 进气口 4A底部的槽口 4C上; 第二密封件 30包括用于隔开内壳 7与阀座 4 的密封件以及隔开 4 气口 4B 与大气的密封件, 这两个密封件例如可以为密 封圏, 其型号可以相同也可以不同。 第二密封件 30 的两个密封件分别套设 在阀座 4的槽口 4D上和内壳 7的槽口 74上。 阀座 4具有销孔 4F以便和内 壳 7固定连接。 使用时, 阀座 4与需要压力控制的装置连接, 可釆用图 3和图 4所示结 构, 实现快速插拔, 此外, 也可以釆用螺紋结构相联接。 图 7至图 11示出了内壳 7的结构。 图 7示出了图 2中的内壳的立体结 构; 图 8从另一侧示出了图 7中的内壳的立体结构; 图 9示出了图 7中的内 壳的主视结构; 图 10示出了图 7中的内壳的剖视结构; 图 11示出了图 7中 的内壳的俯视结构。 内壳 7为筒状, 用来连接阀座 4 , 为其他零件提供固定 和联接的基础。 如图 7至图 11所示, 内壳 7具有销孔 79, 通过设置在其中 的定位销 3, 内壳 7被同轴地固定在阀座 4上。 安装时, 定位销 3对整个压 力控制阀在阀座 4和需要压力控制的装置上起圓周方向定位作用。 内壳 7外侧具有多个槽。 其中, 槽 71 , 其上设有复位弹簧座, 复位弹 簧座可以釆用各种适宜形式的部件, 例如可以为锁紧套 20, 当然还可以为其 他部件; 槽 72, 其上设有阻尼垫圏 8, 阻尼垫圏 8起密封作用, 其也能有效 防止内壳 7和外壳 9之间直接的金属接触, 起阻尼作用; 槽 73 , 用以和刻度 值指示盘 6 固定; 槽 74, 其上设有第二密封件 30。 所述外壳和与之接触的 所述复位弹簧 11之间设有第二垫圏 10。 内壳 7具有面 7C, 其可以与第二垫 圏 10配合, 通过调节垫圏 10的厚度或数量, 补偿复位弹簧 11长度误差。 内壳 7的侧壁设有孔 76, 导向销 21 固定在孔 76内, 为螺旋导向件 18 提供导向和支撑作用。 孔 76可以设置为 3个, 沿内壳 7侧面均匀分布, 当 然, 还可以设置为其他数目。 内壳 7具有凸台 75, 其起到限位定位作用。 凸台 75的侧面 75A和 75B 为定位侧面。 凸台 75上具有沿内壳 7轴向延伸的孔 78, 用于容纳顶销 13, 凸台 75下方设有盲孔 77用于容纳顶起顶销 13的顶柱弹簧 12。 图 37示出了图 2中的螺紋套的立体结构; 图 38示出了图 37中的螺紋 套的剖视结构。 螺紋套 5连接内壳 7与阀座 4, 并锁定内壳 7与阀座 4的相 对位置。 螺紋套 5具有内螺紋 53以和阀座 4连接, 螺紋套 5具有定位部 51 以锁定内壳 7与阀座 4的相对位置。 螺紋套 5的设置便于连接内壳 7与阀座 4 , 并锁定内壳 7与阀座 4的相对位置。 图 25至图 27示出了螺旋导向件 18的结构。图 25示出了图 2中的螺旋 导向件的立体结构; 图 26 示出了图 26 中的螺旋导向件的俯视结构; 图 27 示出了图 26中的螺旋导向件的剖视结构。 如图所示, 螺旋导向件 18可由塑 料制成也可由金属制成, 其具有螺旋沟槽, 螺旋沟槽可以为等距的, 也可以 为不等距的, 优选实施例中为不等距的。 固定在内壳 7上的导向销 21作用 于螺旋沟槽上, 为螺旋导向件 18 提供导向和支撑作用。 在压力调节的过程 中, 螺旋沟槽沿导向销 21转动的同时, 使螺旋导向件 18也产生径向运动, 压缩或松弛压力弹簧 22 , 调节压力弹簧 22的长度。 螺旋导向件 18内具有第二空腔, 第二空腔内具有定位面 181以便与行 程导杆 16配合连接。 定位面 181可以为 3个, 这样便于定位, 当然, 定位 面 181也可以为其他数目。 螺旋导向件 18的上部端口具有凹槽 185。 螺旋导 向件 18下部具有腔体, 形成弹簧座孔, 以便容纳压力弹簧 22。 其中, 压力 弹簧 22通过第一垫圏 19顶在螺旋导向件 18的腔体顶面 183上, 这样, 避 免了金属与金属间的直接接触, 通过其数量或厚度, 补偿压力弹簧 22 的长 度误差, 使压力控制阀的设定压力值更精确。 图 19至图 21示出了行程导杆的结构。 图 19示出了图 2中的行程导杆 的立体结构; 图 20示出了图 19中的行程导杆的剖视结构; 图 21 示出了图 19中的行程导杆的主视结构。 行程导杆 16可由金属制成, 但不局限于金属 , 其与分度盘 14、 螺旋导向件 18、 阀芯 2相联接, 将分度盘的旋转运动传递 给螺旋导向件 18。 如图所示, 行程导杆 16的上部具有连接面 163 , 第二紧固螺钉 27穿过 分度盘 14上的螺孔 148 , 将分度盘 14固定到连接面 163上。 连接面 163可 以为 3个, 这样便于定位, 当然, 也可以为其他数目。 此外, 分度盘 14和 行程导杆 16的连接, 还可以通过将行程导杆 16的上部改为螺紋结构, 分度 盘 14圓环状台上的圓孔改为内螺紋, 两者配合实现螺接。 行程导杆 16能够携带螺旋导向件 18沿圓周方向转动,同时螺旋导向件 18又可以在导向销 21的作用下, 沿行程导 4干 16上下移动。 行程导杆 16下部具有定位面 161与螺旋导向件 18内的定位面 181相配 合。 行程导杆 16是中空的, 行程导杆内具有空腔, 以便容纳阀芯螺母 23和 第一紧固螺钉 29。 阀芯 2具有深入空腔端部的具有螺紋的杆 2A,杆 2A与设 置在空腔中的阀芯螺母 23连接, 并通过第一紧固螺钉 29紧固。这样的设置, 可以实现对阀芯 2的连接和限位, 便于阀芯 2的连接和调整。 图 17示出了图 2中的阀芯的立体结构; 图 18示出了图 17中的阀芯的 剖视结构。 阀芯 2在压力弹簧 22的压力作用下, 与阀座 4上的进气口 4A配 合起密封作用。 如图所示, 阀芯 2的上部具有 4干 2 A , 用以和阀芯螺母 23连 接。 阀芯 2的底部 2B具有和阀座 4的进气口 4A相适配的形状, 以便密封住 进气口 4A。 阀芯螺母 23 , 连接阀芯 2与行程导杆 16, 通过第一紧固螺 4丁 29可以有 效地固定和调节阀芯 2在阀芯螺母 23中旋进的长度。 通过阀芯螺母 23和第一紧固螺 4丁 29, 阀芯 2 固定在行程导杆 16上。 压力弹簧 22 , 根据其压缩长度的长短, 限定压力调节阀的压力的大小。 阀芯垫片 1设置在阀芯 2上, 避免了金属与金属间的直接接触, 通过其 数量或厚度, 补偿压力弹簧 22 的长度误差, 使压力控制阀的设定压力值更 精确。 图 5示出了图 2中的分度盘的立体结构。 如图所示, 分度盘 14, 具有 提供压力分度作用 (即精调功能)、 与内壳 7上的凸台 75相配合提供有效的 零点和最大量程时的限位功能。 分度盘 14 圓周方向具有 3 个贯通轴向方向 装配槽口 143 , 在每个槽的中心具有一个用于装配的圓柱孔 149; 在两个装 配槽口 143之间有一个配合卡口 141 , 用以和夕卜壳 9配合定位。 分度盘 14上 端面上等 3巨分布 3个螺孔 147, 用于和螺 4丁 26连接, 以和压板 17固定在一 起。 中心孔 142用于和行程导杆 16配合。 当然, 装配槽口 143、 螺孔 147不 局限于 3个, 也可以为其他合适数目。 图 6示出了图 5中的分度盘的仰视结构。 如图所示, 分度盘 14具有一 个圓环状凸台 144, 凸台 144的侧面等 3巨分布 3个螺孔 148, 用于固定行程 导杆 16的连接面 163, 凸台 144的端面分别等距分布 3个螺孔 147。 分度盘
14底面在圓周方向分布球面凹坑 145以便与顶销 13配合进行精确定位。 顶 销 13, 通过顶柱弹簧 12的作用, 其顶端的球面与分度盘上相应球面凹坑配 合, 提高了调节压力值的准确性、 简单性、 方便性。 球面凹坑 145可以有多 个, 不同位置的凹坑 145对应不同位置处的分度盘 14, 也就对应分度盘 14 不同的旋转值, 从而对应压紧弹簧 22的压下值, 从而进行精确定位。 当然, 使用孔也可以起到定位配合的效果。 分度盘 14具有环形底面 146, 以及台阶面, 以及位于环形底面 146和 台阶面之间的过渡斜面。 顶销 13相对于分度盘 14在环形底面 146上转动, 环形底面 146端部设有一个带有过渡斜面 14C的台阶, 台阶上有台阶面, 环 形底面 146另一端的端部侧面设有第一定位侧面 14A、 台阶面的端部设有第 二定位侧面 14B。 当第一定位侧面 14A与内壳上 7的定位面 75A相接触时, 螺旋导向件 18到达最低位置, 压力弹簧 22处于最短状态; 当分度盘 14上 的第二定位侧面 14B与内壳上 7的定位面 75B相接触时,在其他部分的带动 向下, 阀芯 2升高, 离开阀座 4上的进气口, 压力控制阀完全打开, 与大气 直接接通时, 气体经阀座 4上进气口进入, 由出气口直接排出。 当然, 分度 盘的定位表面可以为倾斜的环形底面, 环形底面具有相当于定位侧面 14A、 14B的起始端和终止端,也能起到第一定位侧面 14A和第二定位侧面 14B的 作用。 图 12至图 16示出了外壳 9的结构。 图 12示出了图 2中的外壳的立体 结构; 图 13示出了图 12中的外壳的主视结构; 图 14示出了图 12中的外壳 的剖视结构; 图 15示出了图 12中的外壳的俯视结构。 如图所示, 外壳 9在 圓周方向等间距具有 3个凸台 91 ,凸台 91上具有外螺紋以便和上盖 15连接, 每个凸台 91 顶端再次向内突出形成驱动键以便伸入分度盘 14 的配合卡口 141 , 驱动分度盘 14转动; 凸台 91下端具有凹 ^曹 95, 用于第四密 件 28的 安装和固定; 外壳 9的内部具有环形定位凸台 97用以支撑复位弹簧 11 ; 第 二垫圏 10, 可以垫压在外壳 9的环形定位凸台 97与复位弹簧 11之间; 外壳 9的外侧表面 93上标有压力控制阀的压力刻度。外壳 9可转动或上下移动地 套设在内壳上 7夕卜。 分度盘 14的外圓周表面上设有至少一配合卡口 141 , 外壳 9具有伸入 所述至少一配合卡口的驱动键, 这样适宜外壳 9驱动分度盘 14。 图 16示出了图 12中的外壳的丝印圓周展开图。 如图所示, 外壳的丝印 圓周展开图标示了相应的刻度值, 例如, 包括: 0度, 45度, 72度, 126度, 180度, 234度, 288度, 324度, 360度。 这些数值对应于不同的压紧弹簧 的压下值以及分度盘 14的不同旋转角度, 对应分度盘 14上不同的凹坑。 当 然, 刻度不局限于以上数值, 具体数值 居实际情况, 结合选用的弹簧及分 度盘上的分度凹坑分布, 可作不同标记。 图 22示出了图 2中的锁紧套的立体结构; 图 23示出了图 22中的锁紧 套的俯视结构; 图 24示出了图 22中的锁紧套的剖视结构。 如图所示, 锁紧 套 20用以固定复位弹簧 11的位置。锁紧套 20在圓周方向等间距分布 3个贯 通轴向方向装配槽口, 在锁紧套 20圓柱面圓周方向共分布三个圓孔 201 , 位 于相邻的凹槽之间的圓柱面中心, 紧固螺钉 25 穿过圓孔 201 , 将锁紧套 20 固定在内壳 7的槽 71上。 当然, 锁紧套 20的装配槽口与圓孔 201不局限于 3个, 可以为其他合适数目。 复位弹簧 11为压紧弹簧, 用以提供快速排气时的复位功能, 其套在内 壳 7的外侧,压在外壳 9的环形定位凸台 97与锁紧套 20之间。第二垫圏 10, 可以垫在压在外壳 9的环形定位凸台 97与复位弹簧 11之间, 其与内壳 7上 的 7C面配合, 通过调节第二垫圏 10的垫片的厚度或数量, 补偿复位弹簧长 度误差。 复位弹簧 11的顶端顶在在锁紧套 20上, 其通过底端的上下移动产 生向下的压力, 这样的复位设计结构简单、 效果好, 解决了在快速排气功能 的实现上, 操作还不方便的问题。 图 28示出了图 2中的压板的立体结构。 如图所示, 压板 17为圓形板, 盖在分度盘 14和外壳 9上, 其上开有孔 171 , 以便通过螺钉 26与分度盘 14 相联接, 固定外壳 9与分度盘 14的相对位置。 快速排气时, 抬起外壳 9或 上盖 15 , 都能通过压板 17带动分度盘 14抬起, 从而最终带动阀芯 2抬起, 进行快速排气。 图 35示出了图 2中的上盖的立体结构; 图 36示出了图 35中的上盖的 剖视结构。 如图所示, 上盖 15套设于外壳 9外。 分度盘 14的顶面和外壳 9 的顶端相齐平, 分度盘 14的顶面与上盖的内顶面之间设有压板 17, 压板 17 与分度盘 14 固定在一起。 上盖 15设置在压板 17上, 其内侧面具有螺紋以 便和外壳 9连接。 上盖 15与外壳 9之间设有第四密封件 28 , 以便于密封。 上盖 15便于操作时进行转动, 从而带动其他各部件运动。 图 32示出了图 2中的刻度值指示盘的立体结构; 图 33示出了图 32中 的刻度值指示盘的俯视结构; 图 34示出了图 32中的刻度值指示盘的剖视结 构。 如图所示, 刻度值指示盘 6具有螺孔 61 , 紧固螺钉(图中未示出) 穿过 螺孔 61将刻度值指示盘 6固定在内壳 7的槽 73上; 刻度值指示盘 6具有刻 度槽 63 , 其与外壳 9外侧表面 93上的数值相配合, 指示压力调节的值。 刻 度值指示盘 6的设置便于读取压力数值。 下面描述本发明的工作原理。 进行压力调节时, 转动上盖 15 , 其带动外壳 9一起旋转, 外壳 9通过 顶端的凸台 91带动旋转分度盘 14旋转。 分度盘 14分别与压板 17, 行程导 杆 16通过紧固螺钉 26和第二紧固螺钉 27连接固定在一起, 因而压板 17、 行程导杆 16同步转动。行程导杆 16通过其上的配合平面带动螺旋导向件 18 共同转动, 螺旋带向件 18转动时, 其上的螺旋沟槽沿导向销 21转动, 带动 整个螺旋导向件 18沿行程导杆向下运动, 压缩压力弹簧 22。 居上盖 15不 同的旋转角度, 压力弹簧 22 的长度对应一个特定的值。 即对应一个不同的 开启压力。 反向旋转则对应伸长压力弹簧 22。 在旋转的过程中内壳 7上凸台中的顶销 13旋到分度盘对应刻度的球面 凹槽处在定销弹簧 12的作用下弹出,顶销 13上的球面凸台进入球面凹槽 145 内, 此时即可容易感知已旋转到对应刻度。 从而更准确地提高了压力调节阀 压力值精度的定位。 也提高了操作的手感。 当压力调节阀旋转到一定程度后, 分度盘 14旋转一定角度, 于是顶销
13上的球面开始接触到分度盘 14上的斜面 14C , 继续旋转, 顶销 13会将分 度盘 14顶起,从而带动行程导杆 16、螺旋导向件 18使得阀芯 2离开进气口, 此时压力调节阀处于零点状态, 即与大气相接通的状态。 分度盘 14 旋转一 顶角度后,其上的斜面 14C一侧的第二定位侧面 14B与内壳 7上的凸台侧面 75B相接触, 不能再旋转, 实现了零点的限位功能。 当压力调节阀以和零点状态下的相反方向旋转到一定的程度后,分度盘 14上的第一定位侧面 14A与内壳 7上凸台的侧面 75A相接触, jt匕时不能再 进行旋转, 压力达到最大限定压力的状态。 此时螺旋导向件 18 旋转到最低 位置, 压力弹簧 22处于最短状态。 在压力调节阀任何压力之状态下, 向上抬起上盖 15 , 则上盖 15带动外 壳 9、 分度盘 14 , 压板 17 , 行程导才干 16共同向上抬起, 同时行程导才干 16带 动阀芯 2抬起,使阀芯 2离开进气口,此时压力调节阀的状态与零点时相同, 即实现快速排气状态。 抬起的过程中, 因复位弹簧 11上端位置被锁紧套 20 限制, 外壳 9压缩复位弹簧 11 , 外壳 9受复位弹簧 11的压力, 向下复位, 在复位弹簧 11的作用下, 压力调节阀回到抬起前的状态。 从以上的描述中, 可以看出, 本发明实现了如下技术效果: 本发明的压 力调节阀的定位和限位更简单、 有效和准确, 使得压力值更精确。 在快速排 气功能的实现上更加有效和方便。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本 领域的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的 ^"神和 原则之内, 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

权 利 要 求 书
1. 一种压力控制阀, 其特征在于, 包括: 筒状阀体, 包括底壁和侧壁, 所述底壁上具有与待限压装置连通的 进气口 (4A), 所述侧壁上具有至少一导向销 (21), 所述筒状阀体具有 连通至排气系统的排气口 ( 4B );
阀芯 (2), 设置于所述筒状阀体中, 与所述进气口 (4A) 密封配 合;
行程导杆 ( 16), 下端连接所述阀芯 (2);
外套, 可转动或上下运动地套设于所述筒状阀体外, 用于驱动所述 行程导杆 ( 16) 转动或上下运动;
螺旋导向件 ( 18), 可上下移动地套设在上述行程导杆 ( 16) 上, 其外表面上设有供所述至少一导向销 (21) 插入的螺旋槽; 以及
压紧弹簧 ( 22 ), 一端压紧所述阀芯 ( 2 ), 另一端顶在螺旋导向件 ( 18) 上。
2. 根据权利要求 1所述的压力控制阀, 其特征在于, 还包括精调机构, 所 述精调结构包括:
分度盘( 14 ), 固定于所述行程导杆 ( 16 )的顶部, 由所述外套 ( 9, 15 ) 马区动;
弹性装置, 设置在所述筒状阀体的顶端, 其中
所述分度盘( 14)具有与所述弹性装置相接触的定位表面, 所述定 位表面上分布有供所述弹性装置定位的凹坑或孔。
3. 根据权利要求 2所述的压力控制阀, 其特征在于,
所述分度盘 ( 14) 的定位表面包括环形底面 ( 146)、 台阶面、 以及 位于环形底面 ( 146) 和台阶面之间的过渡斜面(14C), 环形底面 ( 146) 的端部侧面设有第一定位侧面 ( 14A), 台阶面的端部设有第二定位侧面 ( 14B )。
4. 根据权利要求 2所述的压力控制阀, 其特征在于, 所述弹性装置包括顶销 ( 13) 以及设置在所述顶销下的顶柱弹簧 ( 12)。
5. 根据权利要求 2所述的压力控制阀, 其特征在于,
所述外套包括上盖(15)以及与所述上盖(15)固定连接的外壳 ( 9 ), 所述外壳 (9) 可转动或上下运动地套设在所述筒状阀体外,
所述分度盘( 14)的外圓周表面上设有至少一配合卡口, 所述外壳 ( 9 ) 具有伸入所述至少一配合卡口的驱动键。
6. 根据权利要求 2所述的压力控制阀, 其特征在于,
所述分度盘( 14 )的顶面和所述外壳的顶端相齐平,所述分度盘( 14 ) 的顶面与所述上盖的内顶面之间设有压板, 所述压板与所述分度盘固定 在一起。
7. 根据权利要求 5所述的压力控制阀, 其特征在于,
所述筒状阀体的上部设有复位弹簧座,
所述外壳 (9) 的内壁上具有环形定位凸台 (97),
所述筒状阀体的复位弹簧座和所述外壳(9)的环形定位凸台 (97) 之间设有复位弹簧 ( 11 )。
8. 根据权利要求 1所述的压力控制阀, 其特征在于,
所述行程导杆( 16) 内具有第一空腔, 所述阀芯具有深入所述第一 空腔端部的具有螺紋的杆 (2A), 所述杆 (2A) 与设置在所述第一空腔 中的阀芯螺母 ( 23 ) 连接, 并通过第一紧固螺钉 ( 29 ) 紧固。
9. 根据权利要求 1所述的压力控制阀, 其特征在于,
所述螺旋导向件( 18)的与所述压紧弹簧(22)相接触的一端向内 凹形成压紧弹簧座孔。
10. 根据权利要求 9所述的压力控制阀, 其特征在于,
所述行程导 4干 ( 16)外侧面具有沿轴向延伸的至少一行程导 4干定位 面 ( 161), 所述螺旋导向件 ( 18) 内部具有第二空腔, 所述第二空腔内 具有与所述至少一行程导杆定位面( 161 )相配合的至少一螺旋导向件定 位面 ( 181 )„ 根据权利要求 10所述的压力控制阀, 其特征在于,
所述行程导 4干 ( 16) 的顶部设有连接面 ( 163), 所述分度盘 ( 14) 设有螺孔 ( 148), 第二紧固螺钉 (27) 将所述分度盘 ( 14) 固定在所述 行程导杆 ( 16 ) 的连接面 ( 163 ) 上。
PCT/CN2010/071796 2009-04-15 2010-04-15 压力控制阀 WO2010118693A1 (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110296249A (zh) * 2019-06-14 2019-10-01 安徽红星阀门有限公司 复合空气阀

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102266634B (zh) * 2010-12-31 2015-06-17 北京谊安医疗系统股份有限公司 流量调节阀及包含该调节阀的麻醉机
CN107096106B (zh) * 2012-06-27 2020-03-27 费雪派克医疗保健有限公司 呼吸辅助设备
US9182051B2 (en) * 2013-07-23 2015-11-10 Moshe Shemer Gas saver valve and method using the same
EP2848582A1 (en) * 2013-09-12 2015-03-18 Micro Matic A/S A safety relief valve
US20160097465A1 (en) * 2014-10-01 2016-04-07 Emerson Electric Co. Closures Including Adjustment Tools for Adjustment Mechanisms
US10408356B2 (en) * 2016-11-17 2019-09-10 Cornelius, Inc. Beverage dispensers with adjustable valves
US11224715B2 (en) * 2017-01-13 2022-01-18 Silverbow Development, Llc Remote oxygen flow adjustment
CN107237906B (zh) * 2017-07-19 2024-05-10 上海德尔格医疗器械有限公司 一种压力泄放阀及医疗器械的气路系统
CN109654078B (zh) * 2017-10-11 2020-09-22 中国航发西安动力控制科技有限公司 一种具有燃油比重修正功能的压差活门组件
CN108543125B (zh) * 2018-06-08 2024-03-15 绍兴安迪斯医疗科技有限公司 一种抽痰管负压开关
JP7448368B2 (ja) * 2020-02-10 2024-03-12 株式会社キッツエスシーティー 手動用ダイヤフラムバルブ
JP2022162281A (ja) * 2021-04-12 2022-10-24 Smc株式会社 流量制御弁
CN113623425B (zh) * 2021-08-09 2023-10-20 福建西河卫浴科技有限公司 一种分水阀和淋浴器

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994006514A1 (en) * 1992-09-11 1994-03-31 Life Support Products, Inc. Demand valve with reduced manual flow control
CN2176469Y (zh) * 1993-10-25 1994-09-07 陈庆法 电磁排气阀
EP0888796A1 (de) * 1997-04-04 1999-01-07 Siemens-Elema AB Ventil
CN2730399Y (zh) * 2004-09-02 2005-10-05 上海力申科学仪器有限公司 用于麻醉机中的零开启单向进气装置
US20050279351A1 (en) * 2004-06-18 2005-12-22 Charles Lewis Medicine delivery interface system
CN2915082Y (zh) * 2006-06-28 2007-06-27 路其中 医用气体终端
CN200939293Y (zh) * 2006-08-03 2007-08-29 上海力申科学仪器有限公司 一种医用气体输出终端装置

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1467671A (en) * 1920-12-20 1923-09-11 Jacob W Kaiser Device for inflating tires and the like
US1584934A (en) * 1924-09-15 1926-05-18 G & H Tire Chuck Gauge Company Adjustable pressure feed and equalizing chuck for inflating hose
US1589696A (en) * 1925-05-25 1926-06-22 Holtz Gustav Valve
US2321679A (en) * 1942-03-10 1943-06-15 George F Houston Indicator valve
US3013790A (en) * 1960-08-10 1961-12-19 Gen Electric Pressure regulating valve adjustment mechanism
US3536092A (en) * 1967-11-13 1970-10-27 Air Prod & Chem Valve seat insert for gas handling equipment
US4545405A (en) * 1983-11-09 1985-10-08 Thomas Industries, Inc. Multi-position relief valve
DE4039351A1 (de) * 1990-12-10 1992-06-11 Pierburg Gmbh Elektromagnetisches steuerventil fuer abgasrueckfuehrung
FR2685427B1 (fr) * 1991-12-23 1995-04-14 Sfr Sa Robineterie Soupape de surete.
CN1095108C (zh) * 1996-04-18 2002-11-27 蒋元元 压力-弹簧-压力平衡式调压装置
US5950623A (en) * 1997-10-16 1999-09-14 Ohmeda Inc. Adjustable pressure limiting valve for anesthesia breathing circuit
US6691735B1 (en) * 1999-10-07 2004-02-17 Uwe Harneit Fine adjustment device for gas pressure regulators
CN101219249B (zh) * 2006-12-25 2010-06-23 北京谊安医疗系统股份有限公司 限压阀

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994006514A1 (en) * 1992-09-11 1994-03-31 Life Support Products, Inc. Demand valve with reduced manual flow control
CN2176469Y (zh) * 1993-10-25 1994-09-07 陈庆法 电磁排气阀
EP0888796A1 (de) * 1997-04-04 1999-01-07 Siemens-Elema AB Ventil
US20050279351A1 (en) * 2004-06-18 2005-12-22 Charles Lewis Medicine delivery interface system
CN2730399Y (zh) * 2004-09-02 2005-10-05 上海力申科学仪器有限公司 用于麻醉机中的零开启单向进气装置
CN2915082Y (zh) * 2006-06-28 2007-06-27 路其中 医用气体终端
CN200939293Y (zh) * 2006-08-03 2007-08-29 上海力申科学仪器有限公司 一种医用气体输出终端装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110296249A (zh) * 2019-06-14 2019-10-01 安徽红星阀门有限公司 复合空气阀

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