WO2020124790A1 - 防水锤卸位安全阀 - Google Patents

防水锤卸位安全阀 Download PDF

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Publication number
WO2020124790A1
WO2020124790A1 PCT/CN2019/076672 CN2019076672W WO2020124790A1 WO 2020124790 A1 WO2020124790 A1 WO 2020124790A1 CN 2019076672 W CN2019076672 W CN 2019076672W WO 2020124790 A1 WO2020124790 A1 WO 2020124790A1
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WIPO (PCT)
Prior art keywords
piston
inlet
magnetic block
hole
section
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PCT/CN2019/076672
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English (en)
French (fr)
Inventor
曾奇风
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曾奇风
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Publication of WO2020124790A1 publication Critical patent/WO2020124790A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/044—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with more than one spring
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/048—Safety 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
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0655—Lift valves
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/08—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet

Definitions

  • the invention relates to the technical field of safety valves, in particular to a safety valve for water-proof hammer dislocation.
  • the Chinese patent with the publication number CN107503784A discloses a safety valve, including a valve housing, a valve body, a movably arranged valve core, and a pressure valve arranged inside the valve body for limiting the valve core Screw, the valve body is provided with a liquid discharge hole; the valve core includes an axially arranged liquid inlet section and a guide section, the outer diameter of the liquid inlet section is greater than the outer diameter of the guide section, the liquid inlet section is provided with Liquid hole; the compression screw is provided with an unloading hole for connecting the liquid hole and the liquid discharge hole so that the liquid flowing out of the liquid hole should cause the liquid hole.
  • the liquid in the liquid inlet section exerts a pushing force on the valve spool.
  • the valve spool moves away from the valve The side of the body slides; when the liquid hole on the valve core communicates with the unloading hole, the liquid in the liquid inlet section flows through the liquid hole, the unloading hole under pressure, and is finally discharged from the liquid discharge hole.
  • the orifice of the liquid hole provided on the side wall of the spool is prone to cracking and damage due to contact, which reduces the service life of the safety valve to a certain extent.
  • the liquid hole on the spool is prone to prematurely communicate with the unloading hole, resulting in the interior of the pipeline communicating with the safety valve
  • the liquid pressure is always less than the rated pressure.
  • the object of the present invention is to provide a waterproof hammer relief safety valve, which has the advantages of more accurate pressure relief and longer service life.
  • a waterproof hammer discharge safety valve including a valve body, a flow channel is opened inside the valve body, the flow channel includes an inlet for water inflow and a water outflow ,
  • the inlet and the control cavity of the outlet, the inner wall of the inlet cooperates with the inner wall of the control cavity to form a shoulder, the control cavity is slidingly connected with a valve core, and the control cavity is provided with a driving element ,
  • the driving member applies a force directed to the inlet side of the pair of spools, so that the spools are pressed against the stop shoulders;
  • the valve core includes a piston, a sealing rod, and a driving member; the piston is slidingly connected inside the control cavity, and the piston is provided with a through hole, and the through hole is used to connect the two sides of the piston
  • the control cavity communicates; the sealing rod is slidingly connected to the piston, and the sealing rod is used to block the through hole; the second driving member is connected to the sealing rod, and the two driving members are paired
  • the sealing rod exerts a force directed to the inlet side;
  • An ejector rod is provided on the inner wall of the control cavity, the ejector rod is located on the outlet side, and the ejector rod is used to interfere with the sealing rod.
  • the inlet of the safety valve when in use, the inlet of the safety valve is connected to the water pipe, and the liquid inside the water pipe enters into the flow channel under the pressure.
  • the pressure exerted by the liquid on the sealing rod is less than the pressure exerted by the driving member two on the sealing rod, the sealing rod cannot complete the sealing of the through hole, and the liquid entering from the inlet can flow to the outlet through the gap between the sealing rod and the through hole On one side, and eventually flow out from the exit.
  • the liquid flowing into the control cavity from the water pipe can push the air inside the water pipe and the flow channel to be discharged from the outlet, thereby completing the exhaust of the water pipe.
  • the sealing rod When the pressure exerted by the liquid on the sealing rod is greater than the pressure exerted by the drive member two on the sealing rod, the sealing rod seals the through hole so that the liquid at the inlet cannot flow to the outlet. At this time, if the liquid pressure inside the water pipe continues to increase, the liquid at the inlet can push the spool to the outlet side. In the process of the spool moving to the outlet side, the volume of the communication part of the flow channel with the water pipe increases, and the liquid pressure gradually decreases, so as to achieve the purpose of pressure relief.
  • the ejector rod restricts the movement of the seal rod, so that relative movement between the seal rod and the piston occurs, and the seal rod seals the through hole.
  • the liquid located at the inlet is discharged through the gap between the sealing rod and the through hole, so as to achieve the purpose of discharging the pressure.
  • the through hole is provided inside the piston, and the through hole is blocked by the sealing rod provided inside the piston, so that during the movement of the piston, the opening of the through hole and the outer wall of the sealing rod are not easy to wear, which improves the The service life of the safety valve also makes the pressure relief of the safety valve more accurate.
  • the valve body includes a front valve seat and a rear valve seat screwed to the front valve seat; the inlet and the control cavity are both provided inside the front valve seat, and the outlet is provided at all The inside of the rear valve seat is described.
  • each component when assembling the safety valve, each component can be installed inside the front seat first, and then the rear seat can be screwed to the front seat, so that the safety valve can be installed The process becomes more convenient and faster.
  • a ring groove is formed on the outer wall of the piston, and a rubber ring that intersects the inner wall of the control cavity is embedded inside the ring groove.
  • the rubber ring seals the gap between the inner wall of the control chamber and the outer wall of the piston, so that the liquid at the inlet is not easy to flow from the gap between the control chamber and the piston, which improves the sealing of the safety valve to a certain extent Sex.
  • the sealing rod includes a response section that passes through the through hole and is used to interfere with the ejector rod, and a sealing section provided on the response section, and the sealing section is used for slidingly covering the direction of the through hole The orifice on the inlet side.
  • the response section when the sealing section slides and covers the opening of the through hole facing the inlet side, the response section passes through the through hole and protrudes out of the opening of the through hole facing the outlet side.
  • the response section collides with the ejector rod and relative movement occurs between the piston and the sealing rod, a gap is formed between the sealing section and the opening of the through hole facing the inlet side, and the sealing section seals the through hole.
  • a rubber sealing ring is stuck on an end surface of the sealing section facing the through hole.
  • the end of the piston facing the inlet is provided with a groove communicating with the through hole, a guide plate is provided at the notch of the groove, and a plurality of water holes are opened on the guide plate;
  • the sealing rod further includes a guide section fixedly connected to the seal section, the guide section is located on the inlet side, and the guide section penetrates the guide plate and is slidingly connected to the guide plate.
  • the guide section penetrates the guide plate, and the guide section and the guide plate are slidingly connected.
  • the guide section cooperates with the guide plate to complete the sliding guide of the sealing rod to ensure that the sealing rod is not easy to deflect during the sliding process, and the sealing section can effectively cover the opening of the through hole toward the inlet side.
  • a collision ring is integrally formed at an inner wall of the groove toward the inlet, the collision ring surrounds the through hole, and an outer radius of the collision ring gradually decreases toward the inlet side.
  • the ejector rod includes a connecting section threadedly connected to the inner wall of the front valve seat, a trigger section fixedly connected to the connecting section and protruding toward the inlet side, and the connecting section is perforated There is a water hole through which water flows.
  • the connecting section of the ejector rod is screwed to the inside of the front valve seat, so that when the ejector rod is damaged, the ejector rod can be removed and replaced only by rotating the ejector rod.
  • the connection section is provided with a water hole. During use, liquid can flow through the water hole and enter the outlet.
  • the trigger section is convex toward the inlet side. During the movement of the piston to the outlet side, the trigger section can interfere with the response section and limit the movement of the response section.
  • the driving member one includes a spring one, one end of the spring one is sleeved on the trigger section, and the other end of the spring one is connected to the end of the piston near the outlet.
  • the spring provided between the plunger and the piston continuously exerts elastic force on the piston, so that the piston is pressed against the shoulder.
  • the inner ring of the spring one is in contact with the outer wall of the trigger section.
  • the trigger section can position and guide the expansion and contraction direction of the spring one, so that the spring one is not easy to bend during the expansion and contraction, and the spring
  • the direction of the elastic force applied by a pair of pistons is always parallel to the central axis of the piston, so that the piston is smoother during the movement.
  • the end of the piston facing the spring one is provided with a limit groove for the spring one to be put into, a limit post is integrally formed at the bottom of the groove of the limit groove, and the limit post starts from The middle part of the spring one passes through and touches the inner ring of the spring one; the through hole penetrates the limit post.
  • the end of the spring which is away from the top rod, extends into the inside of the limiting groove, so that the spring 1 is not easy to move laterally during use.
  • the limit post passes through the middle of the spring one, and the outer wall of the limit post is in contact with the inner ring of the spring one.
  • the action of the limit post on the spring to the positioning guide makes the spring one not easy to bend during the expansion and contraction process.
  • the direction of the spring force applied by the pair of pistons of the spring is always parallel to the central axis of the piston, so that the piston is smoother during the movement.
  • the driving member 1 includes a magnetic block 1 disposed on the plunger and a magnetic block 2 disposed on the piston.
  • the magnetic force between the magnetic block 1 and the magnetic block 2 is a repulsive force.
  • the magnetic force between the magnetic block one and the magnetic block two is a repulsive force
  • the magnetic block one is arranged inside the ejector rod, and the ejector rod is fixedly connected to the valve body, the magnetic block two is arranged inside the piston, and the piston slips It is connected to the inside of the control cavity, so the magnetic block one arranged inside the ejector rod can drive the piston against the stop shoulder by the magnetic block two.
  • the driving member two includes a spring two, one end of the spring two is connected to the piston, and the other end of the spring two is connected to the sealing section.
  • the spring two continuously exerts an elastic force on the sealing rod to point to the inlet side, so that the sealing section of the sealing rod is pressed against the guide plate.
  • the driving member 2 includes a magnetic block three provided on the piston, a magnetic block four provided on the sealing rod, and the magnetic force between the magnetic block three and the magnetic block four is a repulsive force .
  • the driving member 2 includes a magnetic block 5 disposed on the sealing rod, and the magnetic force between the magnetic block 5 and the magnetic block 2 is a repulsive force.
  • the driving member two includes a magnetic block six provided on the sealing rod, a magnetic block seven provided on the guide plate, and the magnetic force between the magnetic block six and the magnetic block seven is suction.
  • FIG. 1 is a schematic structural diagram of Embodiment 1, mainly for showing the external structure of Embodiment 1.
  • Embodiment 2 is a schematic cross-sectional view of Embodiment 1, mainly for showing the composition of Embodiment 1;
  • FIG. 3 is a schematic cross-sectional view of the second embodiment, which is mainly used to show the composition of the second embodiment
  • Embodiment 4 is a schematic cross-sectional view of Embodiment 3, which is mainly used to show the composition of Embodiment 3;
  • FIG 5 is a schematic cross-sectional view of the fourth embodiment, which is mainly used to show the composition of the fourth embodiment.
  • a discharge-proof explosion-proof safety valve as shown in FIGS. 1 and 2, includes a valve body 1, a flow channel 2 with an orifice shape is pierced inside the valve body 1, and the center axis of the flow channel 2 and the valve body The central axis of 1 coincides.
  • the flow channel 2 includes an inlet 21 for fluid to flow into the valve body 1, an outlet 22 for fluid to flow out of the valve body 1, and a control chamber 23 communicating with the inlet 21 and the outlet 22.
  • the inner diameter of the control cavity 23 is larger than the inner diameter of the inlet 21, and the inner wall of the control cavity 23 cooperates with the inner wall of the inlet 21 to form a shoulder.
  • the valve body 1 includes a front valve seat 7 and a rear valve seat 8. Both the inlet 21 and the control cavity 23 are penetrated inside the front valve seat 7, and the outlet 22 is penetrated through the rear valve seat 8.
  • the inner wall of the front valve seat 7 is provided with an internal thread
  • the outer wall of the rear valve seat 8 is provided with an external thread
  • the front valve seat 7 is threadedly connected to the rear valve seat 8 with an external thread through the internal thread.
  • a sealing gasket 9 is sealed between the front valve seat 7 and the rear valve seat 8 to ensure that the fluid inside the valve body 1 is unlikely to flow out from the gap between the front valve seat 7 and the rear valve seat 8 during use.
  • a valve core 3 Inside the control chamber 23, a valve core 3, a driving element one 4 and a plunger 6 are provided, and the valve core 3, a driving element one 4 and a plunger 6 are sequentially arranged along the inlet 21 to the outlet 22 side.
  • the spool 3 includes a piston 31 slidingly connected to the inside of the control chamber 23, a sealing rod 32 slidingly connected to the piston 31, and a driving member 33 connected between the piston 31 and the sealing rod 32.
  • the outer wall of the piston 31 is provided with a ring groove 10, and the center axis of the ring groove 10 coincides with the center axis of the piston 31.
  • the number of ring grooves 10 is two, and the two ring grooves 10 are distributed along the axial direction of the piston 31.
  • Each ring groove 10 has a rubber ring 11 embedded therein, and the outer ring of the rubber ring 11 protrudes from the notch of the ring groove 10 and interferes with the inner wall of the control cavity 23.
  • the rubber ring 11 protruding out of the groove of the ring groove 10 can seal the gap between the inner wall of the control chamber 23 and the outer wall of the piston 31, so that the liquid at the inlet 21 does not easily flow from the gap between the inner wall of the control chamber 23 and the outer wall of the piston 31 To exit 22.
  • a through hole 5 is formed in the center of the piston 31, and the central axis of the through hole 5 coincides with the central axis of the piston 31.
  • the through hole 5 is used to communicate the control chambers 23 on both sides of the piston 31.
  • the end of the piston 31 facing the inlet 21 is provided with a groove 13, the groove 13 communicates with the through hole 5, and the center axis of the groove 13 coincides with the center axis of the piston 31.
  • An annular collision ring 16 is integrally formed on the inner wall of the groove 13 opposite to the inlet 21, the annular collision ring 16 surrounds the opening of the through hole 5 toward the inlet 21, and the outer radial inlet 21 of the collision ring 16 The side gradually decreases.
  • a guide plate 14 is threadedly connected to the notch of the groove 13 toward the inlet 21.
  • the guide plate 14 is provided with a plurality of water holes 15, and the water holes 15 are evenly distributed in the circumferential direction with the axis of the guide plate 14 as the center.
  • a guide hole (not shown in the figure) into which the sealing rod 32 extends is formed in the center of the guide plate 14.
  • the sealing rod 32 includes a guide section 323, a sealing section 322, and a response section 321 that are fixedly connected in order from the inlet 21 to the outlet 22 side.
  • the guide section 323 extends into the guide hole and is slidingly connected to the guide hole.
  • the outer diameter of the sealing section 322 is greater than the outer diameter of the guide section 323.
  • the sealing section 322 is used to cover the opening of the through hole 5 toward the inlet 21 side.
  • a rubber sealing ring 12 is stuck on the end surface of the sealing section 322 facing away from the inlet 21, and when the sealing section 322 slides to seal the opening of the through hole 5 toward the inlet 21 side, the rubber sealing ring 12 can orient the sealing section 322 and the groove 13
  • the inner wall on the side of the inlet 21 is sealed.
  • the response section 321 passes through the through hole 5, and the response section 321 passes through the through hole 5 and protrudes from the end of the through hole 5 toward the outlet 22.
  • the driving element two 33 is a spring two 331
  • one end of the spring two 331 is fixedly connected to the end surface of the sealing section 322 facing away from the inlet 21, and the other end of the spring two 331 is sleeved outside the contact ring 16 and is in contact with the groove 13
  • the inner wall is fixedly connected.
  • the spring two 331 exerts an elastic force on the sealing rod 32 to point to the inlet 21 side, so that the sealing section 322 abuts against the guide plate 14.
  • the ejector rod 6 includes a connecting section 61 screwed to the inside of the valve body 1, and a trigger section 62 fixedly connected to the connecting section 61.
  • the connecting section 61 is provided with a water hole 19.
  • the water hole 19 extends along the axial direction of the connecting section 61.
  • the water hole 19 is used to communicate with the control chamber 23 and the outlet 22.
  • the number of the water holes 19 is several, and the plurality of water holes 19 are evenly distributed circumferentially with the axis of the connecting section 61 as the center.
  • the trigger section 62 is cylindrical, and the central axis of the trigger section 62 coincides with the central axis of the connecting section 61.
  • the trigger section 62 protrudes toward the inlet 21 and is used to interfere with the response section 321.
  • the driving element 4 is a spring 41
  • one end of the spring 41 is sleeved on the trigger section 62
  • the inner ring of the spring 41 contacts the outer wall of the trigger section 62
  • the other end of the spring 41 is connected to the piston 31 on.
  • the spring 41 applies an elastic force to the piston 31 to point to the inlet 21 side, so that the piston 31 is pressed against the stop shoulder.
  • the end of the piston 31 facing the plunger 6 is provided with a limit groove 17 for the spring 41 to extend into.
  • a limit post 18 is integrally formed at the center of the limit groove 17. The limit post 18 is penetrated by the through hole 5 to limit The post 18 passes through the middle of the spring 41, and the outer wall of the limiting post 18 abuts against the inner ring of the spring 41.
  • the specific use process of the waterproof hammer discharge safety valve is as follows: during use, the inlet 21 of the safety valve is connected to the water pipe, and the liquid inside the water pipe enters the flow channel 2 under the pressure.
  • the pressure exerted by the liquid on the sealing rod 32 is less than the elastic force applied by the spring two 331 to the sealing rod 32, the sealing rod 32 cannot complete the sealing of the through hole 5, and the liquid entering from the inlet 21 can pass through the sealing rod 32 and the through hole
  • the gap between 5 flows toward the outlet 22 side, and finally flows out from the outlet 22.
  • the liquid flowing into the control chamber 23 from the water pipe can push the air inside the water pipe and the flow channel 2 from the outlet 22 to complete the exhaust of the water pipe.
  • the sealing rod 32 When the pressure exerted by the liquid on the sealing rod 32 is greater than the pressure exerted by the spring two 331 on the sealing rod 32, the sealing rod 32 seals the through hole 5 so that the liquid at the inlet 21 cannot flow to the outlet 22. At this time, if the liquid pressure inside the water pipe continues to increase, the liquid at the inlet 21 can push the spool 3 to move toward the outlet 22 side. During the movement of the spool 3 to the outlet 22 side, the volume of the portion of the flow channel 2 communicating with the water pipe increases, and the liquid pressure gradually decreases, so as to achieve the purpose of releasing the pressure.
  • the difference between the second embodiment and the first embodiment is that the driving element one 4 includes a magnetic block one 421 embedded in the ejector rod 6 and a magnetic block two 422 embedded in the piston 31.
  • the connection line between the magnetic block one 421 and the magnetic block two 422 is parallel to the central axis of the valve body 1, and the magnetic force between the magnetic block one 421 and the magnetic block two 422 is a magnetic force.
  • the magnetic block one 421 disposed inside the ejector rod 6 drives the piston 31 to move toward the inlet 21 side through the magnetic block two 422, so that the piston 31 is pressed against the stop shoulder.
  • the driving member two 33 includes a magnetic block three 3321 embedded in the piston 31 and a magnetic block four 3322 embedded in the sealing rod 32.
  • the magnetic force between the magnetic block three 3321 and the magnetic block two 422 is gravitation, and the magnetic force between the magnetic block three 3321 and the magnetic block four 3322 is the repulsive force.
  • the magnetic block three 3321 disposed inside the piston 31 drives the sealing rod through the magnetic block four 3322 32 moves to the side of the guide plate 14 so that the sealing section 322 abuts against the guide plate 14.
  • Embodiment 3 The difference between Embodiment 3 and Embodiment 2 is that the drive member 33 includes a magnetic block 333 disposed on the sealing rod 32, and the magnetic force between the magnetic block 333 and the magnetic block 422 is a repulsive force.
  • the magnetic block two 422 provided on the piston 31 can push the sealing rod 32 to move to the inlet 21 side through the magnetic block five 333 so that the sealing section 322 of the sealing rod 32 abuts against the guide plate 14.
  • the driving member two 33 includes a magnetic block six 3341 disposed on the sealing rod 32, a magnetic block seven 3342 disposed on the guide plate 14, and the magnetic block six 3341 and the magnetic block seven 3342
  • the magnetic force between is suction.
  • the magnetic block seven 3342 provided on the guide plate 14 can suck the sealing rod 32 to the inlet 21 side through the magnetic block six 3341, so that the sealing section 322 of the sealing rod 32 abuts against the guide plate 14.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)
  • Details Of Valves (AREA)

Abstract

一种防水锤卸位安全阀，包括阀体(1)，阀体(1)内部开设有流道(2)，流道(2)包括联通的进口(21)、控制腔(23)、出口(22)，进口(21)与控制腔(23)配合形成挡肩，控制腔(23)内部设置有阀芯(3)，控制腔(23)内部设置有驱动件一(4)，驱动件一(4)驱动阀芯(3)抵紧于挡肩；阀芯(3)包括活塞(31)、密封杆(32)以及驱动件二(33)；活塞(31)上穿设有通孔(5)，通孔(5)联通活塞(31)两侧的控制腔(23)；密封杆(32)用于封堵通孔(5)；驱动件二(33)对密封杆(32)施加以指向进口(21)一侧的作用力；控制腔(23)内壁处设置有用于抵触密封杆(32)的顶杆(6)。将通孔(5)设置于活塞(31)内部，且通孔(5)被密封杆(32)封堵，在活塞(31)移动的过程中，通孔(5)的孔口以及密封杆(32)的外壁均不易磨损，一定程度上提升了该安全阀的使用寿命，同时使得该安全阀的泄压更为准确。

Description

防水锤卸位安全阀 技术领域
本发明涉及安全阀技术领域，特别涉及一种防水锤卸位安全阀。
背景技术
目前，公告号为CN107503784A的中国专利公开了一种安全阀，包括阀壳、阀体、可移动设置的阀芯、设置于阀体内部用于对所述阀芯起到限位作用的压紧螺丝，所述阀体上设置有排液孔；阀芯包括轴向依次设置的进液段和导向段，所述进液段的外直径大于导向段的外直径，进液段上设置有过液孔；所述压紧螺丝上设置有用于使所述过液孔与排液孔联通内以将从过液孔中流出的液体应导致排液孔的卸荷孔。
使用过程中，位于进液段中的液体对阀芯施加以推力，当进液段中的液体对阀芯施加的推力大于阀壳内部复位弹簧对阀芯施加的弹力时，阀芯向远离阀体一侧滑动；当阀芯上的过液孔与卸荷孔联通时，进液段中的液体在压力作用下流经过液孔、卸荷孔并最终从排液孔处排出。当进液段中的液体对阀芯施加的推力小于阀壳内部复位弹簧对阀芯施加的弹力时，阀芯移动向阀体一侧；当阀芯上的过液孔与卸荷孔隔断时，进液段中的液体无法从排液孔处排出。
不过在阀芯移动的过程中，设置于阀芯侧壁的过液孔的孔口，极易因碰触而出现开裂损坏的情况，一定程度上降低了该安全阀的使用寿命。而孔口出现破裂损坏的阀芯在向远离阀体一侧移动的过程中，阀芯上的过液孔极易出现过早与卸荷孔联通的情况，导致与该安全阀联通的管道内部的液体压力始终小于额定的压力。
发明内容
针对现有技术存在的不足，本发明的目的在于提供一种防水锤卸位安全阀，其具有泄压较为准确，使用寿命较长的优势。
本发明的上述技术目的是通过以下技术方案得以实现的：一种防水锤卸位安全阀，包括阀体，所述阀体内部开设有流道，所述流道包括供水流入的进口、供水流出的出口、联通进口以及出口的控制腔，所述进口的内壁与所述控制腔的内壁配合形成挡肩，所述控制腔内部滑移连接有阀芯，所述控制腔内部设置有驱动件一，所述驱动件一对所述阀芯施加以指向进口一侧的作用力，使得所述阀芯抵紧于所述挡肩；
所述阀芯包括活塞、密封杆以及驱动件二；所述活塞滑移连接于所述控制腔内部，所述活塞上穿设有通孔，所述通孔用于将所述活塞两侧的控制腔联通；所述密封杆与所述活塞滑移连接，且所述密封杆用于封堵所述通孔；所述驱动件二连接所述密封杆，且所述驱动件二对所述密封杆施加以指向进口一侧的作用力；
所述控制腔的内壁处设置有顶杆，所述顶杆位于出口一侧，且所述顶杆用于抵触所述密封杆。
通过上述技术方案，使用时，将该安全阀的进口与水管连接，水管内部的液体在压力作用下进入到流道内部。当液体对密封杆施加的压力小于驱动件二对密封杆施加的压力时，密封杆无法完成对通孔的密封，且从进口处进入的液体能够经由密封杆与通孔之间的间隙流向出口一侧，并最终从出口处流出。与此同时，由水管流入到控制腔内部的液体能够推动水管以及流道内部的空气从出口排出，以此完成对水管的排气。当液体对密封杆施加的压力大于驱动件二对密封杆施加的压力时，密封杆将通孔密封，使得进口处的液体无法流至出口处。此时若水管内部的液体压力继续增加，则位于进口处的液体能够推动阀芯移动向出口一侧。在阀芯移动向出口一侧的过程中，流道中与水管联通部分的体积增加，且液体压力逐渐下降，以此达到卸位泄压的目的。当阀芯移动至顶杆的端部抵触密封杆时，顶杆限制密封杆的移动，使得密封杆与活塞之间产生相对移动，且密封杆对通孔的密封解除。此时位于进口处的液体经由密封杆与通孔之间的间隙排出，以此达到排液泄压的目的。将通孔设置于活塞内部，且通孔由设置于活塞内部的密封杆封堵，这样在活塞移动的过程中，通孔的孔口以及密封杆的外壁均不易磨损，一定程度上提升了该安全阀的使用寿命，同时使得该安全阀的泄压更为准确。
优选的，所述阀体包括前阀座以及螺纹连接于所述前阀座的后阀座；所述进口以及所述控制腔均设置于所述前阀座的内部，所述出口设置于所述后阀座的内部。
通过上述技术方案，在对该安全阀进行组装时，可以先将各个零部件安装至前阀座的内部，之后再将后阀座螺纹连接至前阀座上即可，使得该安全阀的安装过程变得更为方便、快捷。
优选的，所述活塞的外壁上开设有环槽，所述环槽内部嵌设有抵触所述控制腔内壁的橡胶圈。
通过上述技术方案，橡胶圈将控制腔的内壁与活塞的外壁之间的间隙密封，使得进口处的液体不易从控制腔与活塞之间的间隙处流动，一定程度上提升了该安全阀的密封性。
优选的，所述密封杆包括穿过所述通孔且用于抵触所述顶杆的响应段、设置于所述响应段上的密封段，所述密封段用于滑动遮盖所述通孔朝向所述进口一侧的孔口。
通过上述技术方案，当密封段滑动遮盖在通孔朝向进口一侧的孔口时，响应段从通孔中穿过并凸出于通孔朝向出口一侧的孔口。当响应段与顶杆抵触时，且活塞与密封杆之间发生相对移动时，密封段与通孔朝向进口一侧的孔口之间形成空隙，且密封段对通孔的密封解除。
优选的，所述密封段朝向所述通孔的端面上粘设有橡胶密封圈。
通过上述技术方案，当密封段滑动密封通孔朝向进口一侧的孔口时，橡胶密封圈被挤压变形，且变形后的橡胶密封圈进一步将密封段与活塞之间得间隙密封，使得进口处的液体不易从密封段与活塞之间的间隙中流入到出口处，一定程度上提升了该安全阀的密封性。
优选的，所述活塞朝向所述进口的端部上开设有联通所述通孔的凹槽，所述凹槽的槽口处设置有导向板，所述导向板上开设有若干通水孔；所述密封杆还包括固定连接于所述密封段上的导向段，所述导向段位于所述进口一侧，且所述导向段贯穿于所述导向板并与所述导向板滑移连接。
通过上述技术方案，导向段贯穿于导向板，且导向段与导向板滑移连接。导向段与导向板配合完成对密封杆滑动的导向，以保证密封杆在滑动过程中不易发生偏转，且密封段能够有效将通孔朝向进口一侧的孔口遮盖。
优选的，所述凹槽朝向所述进口的内壁处一体成型有抵触环，所述抵触环包围所述通孔，且所述抵触环的外径向所述进口一侧逐渐减小。
通过上述技术方案，橡胶密封圈在安装台的作用下抵紧于抵触环时，橡胶密封圈发生形变并将抵触环的外壁包裹，此时橡胶密封圈与抵触环之间的密封效果较好，且液体不易从抵触环与橡胶密封圈之间的间隙流出。
优选的，所述顶杆包括螺纹连接于所述前阀座的内壁处的连接段、固定连接于所述连接段上且凸向所述进口一侧的触发段，所述连接段上穿设有供水流过的过水孔。
通过上述技术方案，顶杆的连接段螺纹连接于前阀座的内部，这样在顶杆损坏时，只需旋动顶杆即可将顶杆取下并进行更换。连接段上穿设有过水孔，使用过程中，液体可以流经过水孔并进入到出口处。触发段凸向进口一侧，在活塞移动向出口一侧的过程中，触发段能够抵触响应段并限制响应段的移动。
优选的，所述驱动件一包括弹簧一，所述弹簧一的一端套设于所述触发段，所述弹簧一的另一端连接于所述活塞靠近所述出口的端部上。
通过上述技术方案，使用过程中，设置于顶杆与活塞之间的弹簧一持续对活塞施加以弹力，使得活塞抵紧在挡肩处。弹簧一的内圈抵触于触发段的外壁，在弹簧一进行伸缩的过程中，触发段能够对弹簧一的伸缩方向起到定位导向的作用，使得弹簧一在伸缩过程中不易弯折，且弹簧一对活塞施加的弹力方向始终与活塞的中心轴线平行，这样活塞在移动过程中更为顺畅。
优选的，所述活塞朝向所述弹簧一的端部上开设有供所述弹簧一放入的限位槽，所述限位槽的槽底处一体成型有限位柱，所述限位柱从所述弹簧一的中部穿过并抵触所述弹簧一的内圈；所述通孔贯穿所述限位柱。
通过上述技术方案，弹簧一背离顶杆的端部伸入至限位槽内部，使得弹簧一在使用过程中不易发生横移。限位柱从弹簧一的中部穿过，且限位柱的外壁抵触于弹簧一的内圈，限位柱对弹簧一起到定位导向的作用，使得弹簧一在伸缩变形的过程中不易弯折，且弹簧一对活塞施加的弹力方向始终与活塞的中心轴线平行，这样活塞在移动过程中更为顺畅。
优选的，所述驱动件一包括设置于所述顶杆上的磁块一、设置于所述活塞上的磁块二，所述磁块一与所述磁块二之间的磁力为斥力。
通过上述技术方案，磁块一与磁块二之间的磁力为斥力，且磁块一设置于顶杆内部，且顶杆与阀体固定连接，磁块二设置于活塞内部，且活塞滑移连接于控制腔内部，所以设置于顶杆内部的磁块一能够通过磁块二驱动活塞抵紧于挡肩处。
优选的，所述驱动件二包括弹簧二，所述弹簧二一端连接于所述活塞，所述弹簧二的另一端连接于所述密封段。
通过上述技术方案，使用过程中，弹簧二持续对密封杆施加以指向进口一侧的弹力，使得密封杆的密封段抵紧在导向板上。
优选的，所述驱动件二包括设置于所述活塞上的磁块三、设置于所述密封杆上的磁块四，且所述磁块三与所述磁块四之间的磁力为斥力。
通过上述技术方案，磁块三与磁块四之间的的斥力，这样设置于活塞内部的磁块三能够通过磁块四推动密封杆移动向进口一侧，使得密封杆的密封段抵紧于导向板上。
优选的，所述驱动件二包括设置于所述密封杆上的磁块五，且所述磁块五与所述磁块二之间的磁力为斥力。
通过上述技术方案，磁块二与磁块五之间的的斥力，这样设置于活塞上的磁块二能够通过磁块五推动密封杆移动向进口一侧，使得密封杆的密封段抵紧于导向板上。
优选的，所述驱动件二包括设置于所述密封杆上的磁块六、设置于所述导向板上的磁块七，且所述磁块六与所述磁块七之间的磁力为吸力。
通过上述技术方案，磁块六与磁块七之间的的吸力，这样设置于导向板上的磁块七能够通过磁块六将密封杆吸向进口一侧，使得密封杆的密封段抵紧于导向板上。
附图说明
图1为实施例一的结构示意图，主要是用于展示实施例一的外形结构；
图2为实施例一的剖视示意图，主要是用于展示实施例一的组成情况；
图3为实施例二的剖视示意图，主要是用于展示实施例二的组成情况；
图4为实施例三的剖视示意图，主要是用于展示实施例三的组成情况；
图5为实施例四的剖视示意图，主要是用于展示实施例四的组成情况。
附图标记：1、阀体；2、流道；21、进口；22、出口；23、控制腔；3、阀芯；31、活塞；32、密封杆；321、响应段；322、密封段；323、导向段；33、驱动件二；331、弹簧二；3321、磁块三；3322、磁块四；333、磁块五；3341、磁块六；3342、磁块七；4、驱动件一；41、弹簧一；421、磁块一；422、磁块二；5、通孔；6、顶杆；61、连接段；62、触发段；7、前阀座；8、后阀座；9、密封垫圈；10、环槽；11、橡胶圈；12、橡胶密封圈；13、凹槽；14、导向板；15、通水孔；16、抵触环；17、限位槽；18、限位柱；19、过水孔。
具体实施方式
以下结合附图对本发明作进一步详细说明。
实施例一：
一种卸位防爆安全阀，如图1、图2所示，包括阀体1，阀体1内部穿设有孔口形状为圆形的流道2，且流道2的中心轴线与阀体1的中心轴线重合。流道2包括供流体流入阀体1的进口21、供流体流出阀体1的出口22以及联通进口21以及出口22的控制腔23。控制腔23的内径大于进口21的内径，且控制腔23的内壁与进口21的内壁配合形成挡肩。
阀体1包括前阀座7以及后阀座8。进口21以及控制腔23均穿设于前阀座7的内部，出口22穿设于后阀座8上。前阀座7的内壁处设置有内螺纹，后阀座8的外壁上设置有外螺纹，且前阀座7通过内螺纹与带有外螺纹的后阀座8螺纹连接。前阀座7与后阀座8之间密封有密封垫圈9，以保证在使用过程中，阀体1内部的流体不易从前阀座7与后阀座8之间的间隙流出。
控制腔23内部设置有阀芯3、驱动件一4以及顶杆6，且阀芯3、驱动件一4以及顶杆6沿进口21向出口22一侧依次排布。
阀芯3包括滑移连接于控制腔23内部的活塞31、滑移连接于活塞31上的密封杆32、连接于活塞31与密封杆32之间的驱动件二33。
活塞31的外壁上开设有环槽10，且环槽10的中心轴线与活塞31的中心轴线重合。在本实施例中，环槽10的数目为两个，且两个环槽10沿活塞31轴向分布。每个环槽10内部均嵌设有橡胶圈11，且橡胶圈11的外圈突出于环槽10的槽口并与控制腔23的内壁抵触。凸出于环槽10槽口的橡胶圈11能够将控制腔23内壁与活塞31外壁之间的间隙密封，使得进口21处的液体不易从控制腔23内壁以及活塞31外壁之间的间隙处流至出口22处。
活塞31中心处穿设有通孔5，且通孔5的中心轴线与活塞31的中心轴线重合，通孔5用于将活塞31两侧的控制腔23联通。
活塞31朝向进口21一侧的端部上开设有凹槽13，凹槽13与通孔5联通，且凹槽13的中心轴线与活塞31的中心轴线重合。凹槽13中与进口21相对的内壁处一体成型有环形的抵触环16，环形的抵触环16将通孔5朝向进口21一侧的孔口包围，且抵触环16的外径向进口21一侧逐渐减小。凹槽13朝向进口21的槽口处螺纹连接有导向板14，导向板14上开设有若干通水孔15，且若干通水孔15以导向板14轴线为中心呈周向均匀分布。导向板14中心处开设有供密封杆32伸入的导向孔(图中未标示出)。
密封杆32包括由进口21向出口22一侧依次固定连接的导向段323、密封段322以及响应段321。导向段323伸入至导向孔内部并与导向孔滑移连接。密封段322的外径大于导向段323的外径，密封段322用于将通孔5朝向进口21一侧的孔口遮盖。密封段322背离进口21的端面上粘设有橡胶密封圈12，在密封段322滑动密封通孔5朝向进口21一侧的孔口时，橡胶密封圈12能够将密封段322与凹槽13朝向进口21一侧的内壁密封。响应段321从通孔5中穿过，且响应段321从通孔5中穿过并凸出于通孔5朝向出口22的端部。
驱动件二33在本实施例中为弹簧二331，弹簧二331的一端固定连接于密封段322背离进口21的端 面上，弹簧二331的另一端套设于抵触环16外部并与凹槽13的内壁固定连接。在使用过程中，弹簧二331对密封杆32施加以指向进口21一侧的弹力，使得密封段322抵紧于导向板14上。
顶杆6包括螺纹连接于阀体1内部的连接段61、固定连接于所述连接段61上的触发段62。连接段61上穿设过水孔19，过水孔19沿连接段61的轴向延伸，且过水孔19用于联通控制腔23以及出口22。过水孔19的数目为若干，且若干过水孔19以连接段61的轴线为中心周向均匀分布。触发段62呈圆柱状，且触发段62的中心轴线与连接段61的中心轴线重合。触发段62凸向进口21一侧且用于抵触响应段321。
驱动件一4在本实施例中为弹簧一41，弹簧一41的一端套接于触发段62上，且弹簧一41的内圈抵触触发段62的外壁，弹簧一41的另一端连接于活塞31上。在使用过程中弹簧一41对活塞31施加以指向进口21一侧的弹力，使得活塞31抵紧于挡肩处。
活塞31朝向顶杆6的端部上开设有供弹簧一41伸入的限位槽17，限位槽17的中心处一体成型有限位柱18，限位柱18被通孔5贯穿，限位柱18从弹簧一41的中部穿过，且限位柱18的外壁抵触于弹簧一41的内圈。
防水锤卸位安全阀的具体使用过程如下：使用时，将该安全阀的进口21与水管连接，水管内部的液体在压力作用下进入到流道2内部。当液体对密封杆32施加的压力小于弹簧二331对密封杆32施加的弹力时，密封杆32无法完成对通孔5的密封，且从进口21处进入的液体能够经由密封杆32与通孔5之间的间隙流向出口22一侧，并最终从出口22处流出。与此同时，由水管流入到控制腔23内部的液体能够推动水管以及流道2内部的空气从出口22排出，以此完成水管的排气。当液体对密封杆32施加的压力大于弹簧二331对密封杆32施加的压力时，密封杆32将通孔5密封，使得进口21处的液体无法流至出口22处。此时若水管内部的液体压力继续增加，则位于进口21处的液体能够推动阀芯3移动向出口22一侧。在阀芯3移动向出口22一侧的过程中，流道2中与水管联通部分的体积增加，且液体压力逐渐下降，以此达到卸位泄压的目的。当阀芯3移动至顶杆6的端部抵触密封杆32时，顶杆6限制密封杆32的移动，使得密封杆32与活塞31之间产生相对移动，且密封杆32对通孔5的密封解除。此时位于进口21处的液体经由密封杆32与通孔5之间的间隙排出，以此达到排液泄压的目的。
实施例二：
如图3所示，实施例二与实施例一的区别在于，驱动件一4包括嵌设于顶杆6内部的磁块一421、嵌设于活塞31内部的磁块二422。磁块一421与磁块二422的连线平行于阀体1的中心轴线，且磁块一421与磁块二422之间的磁力为磁力。使用过程中，设置于顶杆6内部的磁块一421通过磁块二422驱动活塞31移动向进口21一侧，使得活塞31抵紧于挡肩处。
驱动件二33包括嵌设于活塞31内部的磁块三3321、嵌设于密封杆32内部的磁块四3322。磁块三3321与磁块二422之间的磁力为引力，磁块三3321与磁块四3322之间的磁力为斥力，设置于活塞31内部的磁块三3321通过磁块四3322驱动密封杆32移动向导向板14一侧，使得密封段322抵紧于导向板 14上。
实施例三：
实施例三与实施例二的区别在于，驱动件二33包括设置于密封杆32上的磁块五333，且磁块五333与磁块二422之间的磁力为斥力。设置于活塞31上的磁块二422能够通过磁块五333推动密封杆32移动向进口21一侧，使得密封杆32的密封段322抵紧于导向板14上。
实施例四：
实施例四与实施例二的区别在于，驱动件二33包括设置于密封杆32上的磁块六3341、设置于导向板14上的磁块七3342，且磁块六3341与磁块七3342之间的磁力为吸力。设置于导向板14上的磁块七3342能够通过磁块六3341将密封杆32吸向进口21一侧，使得密封杆32的密封段322抵紧于导向板14上。
以上所述仅是本发明的示范性实施方式，而非用于限制本发明的保护范围，本发明的保护范围由所附的权利要求确定。

Claims (15)

  1. 一种防水锤卸位安全阀，其特征是：包括阀体(1)，所述阀体(1)内部开设有流道(2)，所述流道(2)包括供水流入的进口(21)、供水流出的出口(22)、联通进口(21)以及出口(22)的控制腔(23)，所述进口(21)的内壁与所述控制腔(23)的内壁配合形成挡肩，所述控制腔(23)内部滑移连接有阀芯(3)，所述控制腔(23)内部设置有驱动件一(4)，所述驱动件一(4)对所述阀芯(3)施加以指向进口(21)一侧的作用力，使得所述阀芯(3)抵紧于所述挡肩；
    所述阀芯(3)包括活塞(31)、密封杆(32)以及驱动件二(33)；所述活塞(31)滑移连接于所述控制腔(23)内部，所述活塞(31)上穿设有通孔(5)，所述通孔(5)用于将所述活塞(31)两侧的控制腔(23)联通；所述密封杆(32)与所述活塞(31)滑移连接，且所述密封杆(32)用于封堵所述通孔(5)；所述驱动件二(33)连接所述密封杆(32)，且所述驱动件二(33)对所述密封杆(32)施加以指向进口(21)一侧的作用力；
    所述控制腔(23)的内壁处设置有顶杆(6)，所述顶杆(6)位于出口(22)一侧，且所述顶杆(6)用于抵触所述密封杆(32)。
  2. 根据权利要求1所述的防水锤卸位安全阀，其特征是：所述阀体(1)包括前阀座(7)以及螺纹连接于所述前阀座(7)的后阀座(8)；所述进口(21)以及所述控制腔(23)均设置于所述前阀座(7)的内部，所述出口(22)设置于所述后阀座(8)的内部。
  3. 根据权利要求1所述的防水锤卸位安全阀，其特征是：所述活塞(31)的外壁上开设有环槽(10)，所述环槽(10)内部嵌设有抵触所述控制腔(23)内壁的橡胶圈(11)。
  4. 根据权利要求1所述的防水锤卸位安全阀，其特征是：所述密封杆(32)包括穿过所述通孔(5)且用于抵触所述顶杆(6)的响应段(321)、设置于所述响应段(321)上的密封段(322)，所述密封段(322)用于滑动遮盖所述通孔(5)朝向所述进口(21)一侧的孔口。
  5. 根据权利要求4所述的防水锤卸位安全阀，其特征是：所述密封段(322)朝向所述通孔(5)的端面上粘设有橡胶密封圈(12)。
  6. 根据权利要求4所述的防水锤卸位安全阀，其特征是：所述活塞(31)朝向所述进口(21)的端部上开设有联通所述通孔(5)的凹槽(13)，所述凹槽(13)的槽口处设置有导向板(14)，所述导向板(14)上开设有若干通水孔(15)；所述密封杆(32)还包括固定连接于所述密封段(322)上的导向段(323)，所述导向段(323)位于所述进口(21)一侧，且所述导向段(323)贯穿于所述导向板(14)并与所述导向板(14)滑移连接。
  7. 根据权利要求6所述的防水锤卸位安全阀，其特征是：所述凹槽(13)朝向所述进口(21)的内壁处一体成型有抵触环(16)，所述抵触环(16)包围所述通孔(5)，且所述抵触环(16)的外径向所述进口(21)一侧逐渐减小。
  8. 根据权利要求2所述的防水锤卸位安全阀，其特征是：所述顶杆(6)包括螺纹连接于所述前阀座(7)的内壁处的连接段(61)、固定连接于所述连接段(61)上且凸向所述进口(21)一侧的触发段(62)，所述连接段(61)上穿设有供水流过的过水孔(19)。
  9. 根据权利要求8所述的防水锤卸位安全阀，其特征是：所述驱动件一(4)包括弹簧一(41)，所述弹簧一(41)的一端套设于所述触发段(62)，所述弹簧一(41)的另一端连接于所述活塞(31)靠近所述出口(22)的端部上。
  10. 根据权利要求9所述的防水锤卸位安全阀，其特征是：所述活塞(31)朝向所述弹簧一(41)的端部上开设有供所述弹簧一(41)放入的限位槽(17)，所述限位槽(17)的槽底处一体成型有限位柱(18)，所述限位柱(18)从所述弹簧一(41)的中部穿过并抵触所述弹簧一(41)的内圈；所述通孔(5)贯穿所述限位柱(18)。
  11. 根据权利要求1所述的防水锤卸位安全阀，其特征是：所述驱动件一(4)包括设置于所述顶杆(6)上的磁块一(421)、设置于所述活塞(31)上的磁块二(422)，所述磁块一(421)与所述磁块二(422)之间的磁力为斥力。
  12. 根据权利要求1所述的防水锤卸位安全阀，其特征是：所述驱动件二(33)包括弹簧二(331)，所述弹簧二(331)的一端连接于所述活塞(31)，所述弹簧二(331)的另一端连接于所述密封段(322)。
  13. 根据权利要求1所述的防水锤卸位安全阀，其特征是：所述驱动件二(33)包括设置于所述活塞(31)上的磁块三(3321)、设置于所述密封杆(32)上的磁块四(3322)，且所述磁块三(3321)与所述磁块四(3322)之间的磁力为斥力。
  14. 根据权利要求11所述的防水锤卸位安全阀，其特征是：所述驱动件二(33)包括设置于所述密封杆(32)上的磁块五(333)，且所述磁块五(333)与所述磁块二(422)之间的磁力为斥力。
  15. 根据权利要求6所述的防水锤卸位安全阀，其特征是：所述驱动件二(33)包括设置于所述密封杆(32)上的磁块六(3341)、设置于所述导向板(14)上的磁块七(3342)，且所述磁块六(3341)与所述磁块七(3342)之间的磁力为吸力。
PCT/CN2019/076672 2018-12-19 2019-03-01 防水锤卸位安全阀 WO2020124790A1 (zh)

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