WO2015043080A1 - 一种不受水质影响的延时自关阀门 - Google Patents

一种不受水质影响的延时自关阀门 Download PDF

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Publication number
WO2015043080A1
WO2015043080A1 PCT/CN2013/088854 CN2013088854W WO2015043080A1 WO 2015043080 A1 WO2015043080 A1 WO 2015043080A1 CN 2013088854 W CN2013088854 W CN 2013088854W WO 2015043080 A1 WO2015043080 A1 WO 2015043080A1
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Prior art keywords
water
valve
cavity
channel
ceramic piece
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PCT/CN2013/088854
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English (en)
French (fr)
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吴跃刚
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吴跃刚
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Publication of WO2015043080A1 publication Critical patent/WO2015043080A1/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
    • F16K21/00—Fluid-delivery valves, e.g. self-closing valves
    • F16K21/04—Self-closing valves, i.e. closing automatically after operation
    • F16K21/06—Self-closing valves, i.e. closing automatically after operation in which the closing movement, either retarded or not, starts immediately after opening
    • 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
    • F16K21/00—Fluid-delivery valves, e.g. self-closing valves
    • F16K21/04—Self-closing valves, i.e. closing automatically after operation
    • F16K21/06—Self-closing valves, i.e. closing automatically after operation in which the closing movement, either retarded or not, starts immediately after opening
    • F16K21/10—Self-closing valves, i.e. closing automatically after operation in which the closing movement, either retarded or not, starts immediately after opening with hydraulic brake cylinder acting on the closure member
    • 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
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
    • F16K31/38—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side
    • F16K31/383—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side the fluid acting on a piston

Definitions

  • the invention relates to a valve, in particular to a time delay self-closing valve which is not affected by water quality.
  • the valve of the existing self-closing faucet generally comprises a valve body and a valve core, a lower part of the valve body is provided with a negative pressure chamber separating the valve body and the inlet pipe, and an upper part of the negative pressure chamber is provided with a connection inlet pipe.
  • the water inlet hole is provided with a water outlet hole on the valve body, and the valve body is further provided with a water passage hole controlled by the valve core, and the water outlet hole and the water inlet hole are connected when the water passage hole is opened; the valve core passes through the valve body from the middle portion
  • the top of the valve core is provided with a push switch, and the lower end of the valve core is connected with a piston disposed in the negative pressure chamber, and the piston moves the piston to move the piston in the negative pressure chamber, and a unidirectional seal ring is arranged around the piston, and the bottom of the piston is provided with a size.
  • An adjustable negative pressure regulating hole; a spring device for resetting the spool is provided in the valve body. Before use, the water-passing hole is closed.
  • the water-passing hole When the pressure is applied to the pressing switch to move the piston to the inside of the negative pressure chamber, the water-passing hole is opened, the water flows out through the water-inlet hole, and the water in the negative pressure chamber passes through the one-way.
  • the sealing ring is discharged; when the piston returns under the driving of the spring device, a negative pressure is formed between the piston and the negative pressure chamber, and the water in the water inlet hole enters between the piston and the negative pressure chamber through the negative pressure adjusting hole, and the piston is slowly reset.
  • the resetting time can be set by adjusting the size of the negative pressure adjusting hole.
  • the faucet adopting the above valve realizes the function of automatically closing the time delay, but has the disadvantages of short service life: 1.
  • the impurities in the water block the negative pressure regulating hole, so that the negative pressure in the negative pressure chamber cannot be released, resulting in a long piston.
  • the time cannot be reset, and the delay self-closing function is disabled.
  • the impurities in the water may also rub with the one-way sealing ring.
  • the long-term friction may cause the one-way sealing ring to wear and fail, resulting in a negative Negative pressure cannot be formed inside the pressure chamber, the piston will be quickly reset after pressing, and the delay self-closing function will be invalid.
  • the unidirectional sealing ring is immersed in water for a long time, which also easily affects the sealing performance, thereby invalidating the valve.
  • the present invention provides a time-delay self-closing valve for separating the negative pressure chamber and the water, preventing impurities in the water from affecting the operation of the negative pressure chamber, and effectively prolonging the service life of the valve.
  • a time delay self-closing valve not affected by water quality comprising a valve body with a closed inner cavity composed of a valve seat and a valve cover, wherein the valve body cavity is provided with a movable diaphragm, and the diaphragm is a valve body cavity Separating into a first cavity and a second cavity, the diaphragm is provided with a fine water channel penetrating the diaphragm to connect the first cavity and the second cavity; the valve seat is provided with a water inlet channel communicating with the first cavity, the valve The seat is further provided with a water outlet channel, the outlet water channel and the first cavity are located on the same side of the diaphragm, and the diaphragm covers the passage opening of the water outlet channel to separate the water channel and the first cavity, and the second cavity is provided with communication a pressure relief water channel of the outlet water channel, wherein the pressure relief water channel is provided with a ceramic valve core switch, wherein the valve cover is provided with a valve core for driving the ceramic valve core switch
  • the piston is provided with a one-way sealing ring which is in contact with the inner wall of the negative pressure chamber, and the piston is provided with a connecting negative pressure.
  • the air inlet of the cavity and the outside atmosphere; the valve cover is provided with a valve Resetting spring means to reset.
  • the pressure relief water passage includes a pressure relief water passage I that communicates with the second cavity and a pressure relief water passage II that communicates with the water outlet pipe
  • the ceramic valve core switch includes a static ceramic piece that is closely disposed.
  • the movable ceramic piece, the static ceramic piece is provided with a first water-passing hole communicating with the pressure-relief water channel I and a second water-passing hole communicating with the pressure-relief water channel II
  • the movable ceramic piece is provided with a groove
  • the valve core is used to move the ceramic piece Rotate to connect the groove to the two water holes or to block the two water holes.
  • a side of the movable ceramic piece is provided with a collision block
  • a lower block corresponding to the movable ceramic piece at the lower part of the valve core is provided with an upper protrusion and a lower protrusion, and when the valve core moves downward/upward to the maximum, the upper protrusion/lower convex
  • the block impact block causes the moving ceramic piece to rotate.
  • the movable ceramic piece is provided with a pressing spring II for pressing the movable ceramic piece against the static ceramic piece
  • the dynamic ceramic piece is provided with a boss by the pressing spring II.
  • the one-way sealing ring on the piston is an open-out V-ring or a U-ring.
  • the size of the intake hole on the piston is adjustable.
  • a pressing cover is fixed to the top end of the valve body, and the return spring device is disposed between the pressing cover and the valve cover.
  • the fine water passage is provided with a through needle for dredging the water passage, and the diameter of the through needle is smaller than the inner diameter of the fine water passage.
  • a pressing spring I for pressing it against the passage opening of the water outlet is provided above the diaphragm.
  • the time delay self-closing valve of the invention separates the vacuum chamber for forming a vacuum and the water channel for water passage, thereby avoiding the influence of impurities in the water on the negative pressure chamber, and overcomes the shortcoming of the short service life of the current self-closing faucet valve, and is effective
  • the service life of the valve is prolonged; at the same time, the diaphragm in the valve body uses water pressure to complete the action of opening and closing the water outlet, and the structure is more ingenious and better than the existing faucet valve.
  • Figure 1 is a cross-sectional view of a conventional self-closing faucet valve
  • Figure 2 is a cross-sectional view of the time delay self-closing valve of the present invention
  • Figure 3 is a schematic structural view of a ceramic spool switch
  • Figure 4 is a schematic view showing the structure of the valve core rotating the ceramic piece in the closed state
  • Fig. 5 is a schematic view showing the structure of the valve core with the moving ceramic piece returned in the open state of the valve.
  • the invention provides a time delay self-closing valve which is not affected by water quality, as shown in FIG. 2, and comprises a valve body with a closed inner cavity composed of a valve seat 1 and a valve cover 2, and the valve body cavity is arranged to be movable.
  • the diaphragm 3, the diaphragm 3 divides the valve body cavity into a first cavity 12 and a second cavity 13 respectively located on both sides of the diaphragm 3, and the diaphragm 3 is provided with a penetrating membrane 3 connected to the first cavity 12 and the water channel of the second cavity 13; the first cavity 12 is connected to the water channel 11; the valve seat 1 is further provided with a water outlet channel 14, the passage opening of the water outlet channel 14 and the first cavity 12 are located on the diaphragm 3.
  • the diaphragm 3 covers the passage opening of the water outlet 14 to partition the water channel 14 and the first cavity 12, and the second cavity 13 is provided with a pressure relief water passage connecting the water outlet 14, and the pressure relief channel is provided with A ceramic spool switch that controls its blockage or conduction.
  • the pressure relief water channel is in a blocked state, and the water enters the first cavity 12 from the inlet water channel 11 and enters and fills the second cavity 13 through the fine water channel on the diaphragm 3, since there is no water at the passage opening of the water outlet channel 14.
  • the water pressure of the diaphragm 3 on the side of the second cavity 13 is greater than the water pressure received on the side of the first cavity 12, and the diaphragm 3 is pressed against the passage opening of the outlet channel 14 by the water pressure.
  • the outlet water channel 14 is separated from the first cavity 12, and the valve is in a closed state; when the ceramic valve core is actuated to cause the pressure relief water channel to be in an on state, the water pressure in the second cavity 13 is released through the pressure relief water channel to make the membrane
  • the water pressure of the sheet 3 on the side of the first cavity 12 is greater than the water pressure received on the side of the second cavity 13 , and the diaphragm 3 is lifted up by the water pressure to leave the passage opening of the water outlet 14 , the first empty
  • the chamber 12 is connected to the outlet water channel 14, and the valve is in an open state, and the water is discharged normally.
  • a compression spring I 10 is disposed above the diaphragm 3, and the compression spring I is pressed. 10 Press the diaphragm 3 against the passage opening of the outlet channel 14.
  • a through needle 32 is disposed in the water channel, and the diameter of the needle 32 is smaller than the inner diameter of the water channel.
  • the pressure relief channel includes a pressure relief channel I 131 that communicates with the second cavity 13 and a pressure relief channel that communicates with the water channel 14 141, ceramic spool switch is set in the pressure relief channel I 131 and the pressure relief channel II Intersection of 141.
  • the ceramic valve core switch includes a static ceramic piece 4 and a movable ceramic piece 5 which are disposed closely adjacent to each other.
  • the static ceramic piece 4 is provided with a first water-passing hole 41 communicating with the pressure-relief water channel I 131 and with the pressure relief.
  • Waterway II 141 a second water-passing hole 42 is connected; the movable ceramic piece 5 is rotatable relative to the static ceramic piece 4, and the movable ceramic piece 5 is provided with a groove 51, and the movable ceramic piece 5 is rotated to connect the groove 51 to the two of the static ceramic piece 4.
  • the water-passing holes or the two water-passing holes are blocked by the gap, so that the pressure-relief channel is turned on or blocked.
  • the movable ceramic piece 5 is provided with a pressing spring II for pressing the movable ceramic piece 5 against the static ceramic piece 4, and the pressing ceramic spring 5 is fitted with the pressing spring II. 9 is provided with a boss 53.
  • a movable valve core 6 is disposed in the valve cover 2, and a pressing cover 7 is fixed to the top end of the valve core 6.
  • a return spring device 8 is disposed between the pressing cover 7 and the valve cover 2, and the return spring device 8 is preferably a compression spring. .
  • the spool 6 when a downward pressure is applied to the pressing cover 7, the spool 6 can be moved downward; when the applied pressure is removed, the spool 6 is acted upon by the return spring means 8. Automatically back up to the original position.
  • the lower portion of the valve body 6 is provided with an upper bump 63 and a lower bump 62.
  • the side of the movable ceramic piece 5 is correspondingly provided with a collision block 52, and the collision block 52 is located between the upper protrusion 63 and the lower protrusion 62.
  • the upper bump 63 strikes the bumper 52 to rotate the movable ceramic piece 5 to communicate the two water passing holes; when the spool 6 is returned to the original position
  • the lower bump 62 strikes the bumper 52 to rotate the movable ceramic piece 5 in the opposite direction, and the two water-passing holes are staggered.
  • a vacuum chamber 21 is also disposed in the bonnet 2, and the spool 6 passes through the negative pressure chamber 21 from the middle.
  • a piston 61 is fixed on the valve core 6. The piston 61 is driven by the valve core 6 to move the piston in the up and down direction in the negative pressure chamber 21.
  • the piston 61 is provided with a one-way sealing ring 611 which is in contact with the inner wall of the negative pressure chamber 21.
  • the one-way sealing ring 611 is a V-shaped sealing ring or a U-shaped sealing ring that opens toward the outside of the negative pressure chamber 21.
  • the one-way seal ring 611 is discharged, and when the piston 61 moves to the outside of the negative pressure chamber 21 under the driving of the spool 6, the one-way seal ring 611 blocks the outside air from entering the negative pressure chamber 21, and the vacuum chamber negative inside the negative pressure chamber 21 is formed. The pressure slows down the outward movement of the piston 61.
  • the piston 61 is provided with an air inlet hole 612 that communicates with the negative pressure chamber 21 and the outside atmosphere.
  • the air inlet hole 612 is used for slowly releasing the vacuum negative pressure in the negative pressure chamber 21 to achieve the effect of delaying the self-closing.
  • the air inlet hole 612 The size of the intake hole 612 can be adjusted to change the time required for the piston 61 to reset, thereby changing the length of time for the valve to be self-closing.
  • the time delay self-closing valve of the invention separates the negative pressure chamber 21 for forming a vacuum and the water channel for water passage, thereby avoiding impurities in the water affecting the operation of the negative pressure chamber 21, and overcomes the shortcoming of the short service life of the current self-closing faucet valve.
  • the utility model effectively extends the service life of the valve; at the same time, the diaphragm 3 in the valve body uses the water pressure to complete the action of opening and closing the water outlet channel, and the structure is more ingenious and better than the existing faucet valve.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Driven Valves (AREA)
  • Multiple-Way Valves (AREA)

Abstract

一种不受水质影响的延时自关阀门，包括由阀座（1）、阀盖（2）组成的阀体，阀体内设置有将阀体内腔分隔为第一空腔（12）和第二空腔（13）的活动膜片（3），膜片（3）上设置有穿透膜片（3）的细水道；第一空腔（12）连接进水水道（11），出水水道（14）和第一空腔（12）位于膜片（3）的同一侧，膜片（3）覆盖在出水水道（14）的通道口上分隔出水水道（14）和第一空腔（12），第二空腔（13）上设置有泄压水道（131，141），泄压水道（131，141）上设置有陶瓷阀芯开关，阀盖（2）内活动设置有穿过负压腔（21）的阀芯，阀芯带动陶瓷阀芯开关动作。这种延时自关阀门将用于形成真空的负压腔和通水的水道分离，避免了水中的杂质影响负压腔工作，克服了现有的自关水龙头阀门使用寿命短的缺点，有效延长阀门的使用寿命。

Description

一种不受水质影响的延时自关阀门
技术领域
本发明涉及一种阀门，尤其涉及一种不受水质影响的延时自关阀门。
背景技术
在当代，为了满足人们越来越高的卫生要求，在公共场合的卫生间大多安装红外感应水龙头或者延时自关水龙头，这两种水龙头的一个共同之处是人们在洗手后不需要再接触水龙头即可实现水龙头的自动关闭。其中，延时自关水龙头采用弹簧装置实现自关复位，并且依靠负压变化率实现水龙头关闭时间的调节。
如图1所示，现有的延时自关水龙头的阀门一般包括阀体和阀芯，阀体下部设置有将阀体和进水管分隔的负压腔，负压腔上部设置有连接进水管的进水孔，阀体上设置有出水孔，阀体上还设置有由阀芯控制打开的通水孔，通水孔打开时连通出水孔和进水孔；阀芯从中部穿过阀体，阀芯顶端设置有按压开关，阀芯下端连接设置在负压腔内的活塞，由阀芯带动活塞在负压腔内作活塞运动，活塞周边设置有单向密封圈，活塞底部设置有大小可调节的负压调节孔；阀体内设置有使阀芯复位的弹簧装置。使用前，通水孔封闭，当对按压开关施加压力使活塞向负压腔内部移动时，通水孔打开，水通过进水孔后从出水孔流出，同时负压腔内的水通过单向密封圈排出；当活塞在弹簧装置带动下返回时，使活塞和负压腔之间形成负压，进水孔部分的水通过负压调节孔进入活塞与负压腔之间，活塞缓慢复位，其复位的时间可以通过调节负压调节孔的大小设定，当活塞回到原来位置时，堵塞通水孔，水龙头自动关闭。
采用上述阀门的水龙头实现了延时自动关闭的功能，但存在使用寿命短的缺点：1、水中的杂质会堵塞负压调节孔，从而使负压腔内的负压不能释放，导致活塞很长时间不能复位，使延时自关功能失效；2、当活塞复位的时候，水中的杂质也可能会和单向密封圈发生摩擦，长时间的摩擦可能使单向密封圈磨损而失效，导致负压腔内部不能形成负压，活塞在按下后会快速复位，延时自关功能失效；3、单向密封圈长期浸泡在水中，也容易影响其密封性能，从而使阀门失效。
发明内容
为了克服现有技术的不足，本发明提供一种负压腔和水分离的延时自关阀门，防止水中的杂质影响负压腔工作，有效延长阀门的使用寿命。
本发明解决其技术问题所采用的技术方案是：
一种不受水质影响的延时自关阀门，包括由阀座、阀盖组成的带密闭内腔的阀体，所述阀体内腔里设置有可活动的膜片，膜片将阀体内腔分隔为第一空腔和第二空腔，膜片上设置有穿透膜片连接第一空腔和第二空腔的细水道；阀座上设置有进水水道连通第一空腔，阀座上还设置有出水水道，出水水道和第一空腔位于膜片的同一侧，膜片覆盖在出水水道的通道口上分隔出水水道和第一空腔，所述第二空腔上设置有连通出水水道的泄压水道，所述泄压水道上设置有陶瓷阀芯开关，所述阀盖内活动设置有带动陶瓷阀芯开关动作的阀芯，阀盖内还设置有负压腔，阀芯上固定有设置在负压腔内的活塞，活塞由阀芯驱动在负压腔内做活塞运动，活塞周边设置有与负压腔内壁相接触的单向密封圈，活塞上设置有连通负压腔和外界大气的进气孔；阀盖上设置有使阀芯复位的复位弹簧装置。
在上述的延时自关阀门中，所述泄压水道包括连通第二空腔的泄压水道I和连通出水水道的泄压水道II，所述陶瓷阀芯开关包括紧贴设置的静陶瓷片和动陶瓷片，静陶瓷片上设置有与泄压水道I连通的第一通水孔和与泄压水道II连通的第二通水孔，动陶瓷片上设置有凹槽，阀芯带动动陶瓷片转动使凹槽连通两个通水孔或者错开隔断两个通水孔。
进一步，所述动陶瓷片侧面设置有撞块，阀芯下部对应动陶瓷片的撞块设置有上凸块和下凸块，阀芯向下/向上移动到最大时，上凸块/下凸块撞击撞块使动陶瓷片转动。
进一步，所述动陶瓷片上设置有将动陶瓷片压紧在静陶瓷片上的压紧弹簧II，动陶瓷片上配合压紧弹簧II设置有凸台。
在上述的延时自关阀门中，所述活塞上的单向密封圈为开口向外的V型密封圈或者U型密封圈。
在上述的延时自关阀门中，所述活塞上的进气孔的大小可调。
在上述的延时自关阀门中，所述阀芯顶端固定有按压盖，所述复位弹簧装置设置在按压盖和阀盖之间。
在上述的延时自关阀门中，所述细水道内设置有用于疏通水道的通针，通针的直径小于细水道的内径。
在上述的延时自关阀门中，所述膜片上方设置有将其压紧在出水水道的通道口上的压紧弹簧I。
本发明的有益效果是：
本发明的延时自关阀门将用于形成真空的负压腔和通水的水道分离，避免了水中的杂质影响负压腔工作，克服了现在的自关水龙头阀门使用寿命短的缺点，有效延长阀门的使用寿命；同时，阀体中的膜片利用水压完成开启和封闭出水水道的动作，与现有的水龙头阀门相比，其结构更巧妙，效果更好。
附图说明
下面结合附图和实施例对本发明进一步说明。
图1是现有的自关水龙头阀门的剖视图；
图2是本发明的延时自关阀门的剖视图；
图3是陶瓷阀芯开关的结构示意图；
图4是阀门在关闭状态下阀芯带动动陶瓷片转动的结构示意图；
图5是阀门在开启状态下阀芯带动动陶瓷片返回的结构示意图。
具体实施方式
下面结合附图2至5和实施例对本发明进一步说明。
本发明提供的一种不受水质影响的延时自关阀门，如图2所示，包括由阀座1、阀盖2组成的带密闭内腔的阀体，阀体内腔里设置有可活动的膜片3，膜片3将阀体内腔分隔为分别位于膜片3两侧的第一空腔12和第二空腔13，膜片3上设置有穿透膜片3连接第一空腔12和第二空腔13的细水道；第一空腔12连接进水水道11；阀座1上还设置有出水水道14，出水水道14的通道口和第一空腔12位于膜片3的同一侧，膜片3覆盖在出水水道14的通道口上分隔出水水道14和第一空腔12，所述第二空腔13上设置有连通出水水道14的泄压水道，泄压水道上设置有控制其堵塞或者导通的陶瓷阀芯开关。平时泄压水道处于堵塞状态，水从进水水道11进入填充第一空腔12，并通过膜片3上的细水道进入并填充第二空腔13，由于出水水道14的通道口处没水压，使膜片3在第二空腔13侧受到的水压比在第一空腔12侧受到的水压大，膜片3在水压的作用下紧压在出水水道14的通道口上，将出水水道14和第一空腔12分隔，阀门为关闭状态；当陶瓷阀芯开关动作使泄压水道处于导通状态后，第二空腔13内的水压通过泄压水道释放，使膜片3在第一空腔12侧受到的水压比在第二空腔13侧受到的水压大，膜片3在水压的作用下被顶起离开出水水道14的通道口，第一空腔12和出水水道14连通，阀门为打开状态，正常出水。
进一步，为了加强膜片3的封闭效果，并使其在复位时更快动作，所述膜片3上方设置有压紧弹簧I 10，压紧弹簧I 10将膜片3压在出水水道14的通道口上。此外，为了防止水中的杂质堵塞细水道，在所述的细水道内设置有通针32，通针32的直径小于细水道的内径，当膜片3被顶起或者复位时，通针32在细水道里运动，进行疏通的工作，使细水道保持通畅。
所述泄压水道包括连通第二空腔13的泄压水道I 131和连通出水水道14的泄压水道II 141，陶瓷阀芯开关设置在泄压水道I 131和泄压水道II 141的交汇处。如图3所示，陶瓷阀芯开关包括紧贴设置的静陶瓷片4和动陶瓷片5，静陶瓷片4上设置有与泄压水道I 131连通的第一通水孔41和与泄压水道II 141连通的第二通水孔42；动陶瓷片5可相对静陶瓷片4转动，动陶瓷片5上设置有凹槽51，动陶瓷片5转动使凹槽51连通静陶瓷片4的两个通水孔或者错开隔断两个通水孔，从而使泄压水道导通或者堵塞。
进一步，动陶瓷片5上设置有将动陶瓷片5压紧在静陶瓷片4上的压紧弹簧II 9，动陶瓷片5上配合压紧弹簧II 9设置有凸台53。
所述阀盖2内设置有可移动的阀芯6，阀芯6顶端固定有按压盖7，在按压盖7和阀盖2之间设置有复位弹簧装置8，复位弹簧装置8优选为压簧。如图2所示，在本实施例中，当向按压盖7施加向下压力时，可使阀芯6向下移动；当撤销施加的压力后，阀芯6在复位弹簧装置8的作用下自动向上回到原来位置。
阀芯6下部设置有上凸块63和下凸块62，动陶瓷片5侧面对应设置有撞块52，撞块52位于上凸块63和下凸块62之间。参照图4、图5，当阀芯6向下移动到最大时，上凸块63撞击撞块52使动陶瓷片5转动，连通两个通水孔；当阀芯6向上回到原来位置时，下凸块62撞击撞块52使动陶瓷片5反向转动，错开隔断两个通水孔。
阀盖2内还设置有负压腔21，阀芯6从中部穿过负压腔21。阀芯6上固定有活塞61，活塞61由阀芯6带动在负压腔21内做上下方向的活塞运动，活塞61周边设置有与负压腔21内壁相接触的单向密封圈611，所述单向密封圈611为开口朝向负压腔21外的V型密封圈或者U型密封圈，当活塞61在阀芯6带动下向负压腔21运动时，负压腔21内的空气通过单向密封圈611排出，而当活塞61在阀芯6带动下向负压腔21外部运动时，单向密封圈611阻挡了外界空气进入负压腔21，使负压腔21内部形成真空负压，减缓活塞61向外运动的速度。活塞61上设置有连通负压腔21和外界大气的进气孔612，进气孔612用于缓慢释放负压腔21内的真空负压，以达到延时自关的效果，进气孔612的大小可调，通过调节进气孔612的孔径大小，可改变活塞61复位所需的时间，进而改变阀门延时自关的时间长短。
本发明的延时自关阀门将用于形成真空的负压腔21和通水的水道分离，避免了水中的杂质影响负压腔21工作，克服了现在的自关水龙头阀门使用寿命短的缺点，有效延长阀门的使用寿命；同时，阀体中的膜片3利用水压完成开启和封闭出水水道的动作，与现有的水龙头阀门相比，其结构更巧妙，效果更好。
以上所述仅为本发明的优先实施方式，只要以基本相同手段实现本发明目的的技术方案都属于本发明的保护范围之内。

Claims (9)

  1. 一种不受水质影响的延时自关阀门，包括由阀座、阀盖组成的带密闭内腔的阀体，所述阀体内腔里设置有可活动的膜片，膜片将阀体内腔分隔为第一空腔和第二空腔，膜片上设置有穿透膜片连接第一空腔和第二空腔的细水道；阀座上设置有进水水道连通第一空腔，阀座上还设置有出水水道，出水水道和第一空腔位于膜片的同一侧，膜片覆盖在出水水道的通道口上分隔出水水道和第一空腔，所述第二空腔上设置有连通出水水道的泄压水道，所述泄压水道上设置有陶瓷阀芯开关，其特征在于：所述阀盖内活动设置有带动陶瓷阀芯开关动作的阀芯，阀盖内还设置有负压腔，阀芯上固定有设置在负压腔内的活塞，活塞由阀芯驱动在负压腔内做活塞运动，活塞周边设置有与负压腔内壁相接触的单向密封圈，活塞上设置有连通负压腔和外界大气的进气孔；阀盖上设置有使阀芯复位的复位弹簧装置。
  2. 根据权利要求1所述的一种不受水质影响的延时自关阀门，其特征在于：所述泄压水道包括连通第二空腔的泄压水道I和连通出水水道的泄压水道II，所述陶瓷阀芯开关包括紧贴设置的静陶瓷片和动陶瓷片，静陶瓷片上设置有与泄压水道I连通的第一通水孔和与泄压水道II连通的第二通水孔，动陶瓷片上设置有凹槽，阀芯带动动陶瓷片转动使凹槽连通两个通水孔或者错开隔断两个通水孔。
  3. 根据权利要求2所述的一种不受水质影响的延时自关阀门，其特征在于：所述动陶瓷片侧面设置有撞块，阀芯下部对应动陶瓷片的撞块设置有上凸块和下凸块，阀芯向下/向上移动到最大时，上凸块/下凸块撞击撞块使动陶瓷片转动。
  4. 根据权利要求2所述的一种不受水质影响的延时自关阀门，其特征在于：所述动陶瓷片上设置有将动陶瓷片压紧在静陶瓷片上的压紧弹簧II，动陶瓷片上配合压紧弹簧II设置有凸台。
  5. 根据权利要求1所述的一种不受水质影响的延时自关阀门，其特征在于：所述活塞上的单向密封圈为开口向外的V型密封圈或者U型密封圈。
  6. 根据权利要求1所述的一种不受水质影响的延时自关阀门，其特征在于：所述活塞上的进气孔的大小可调。
  7. 根据权利要求1所述的一种不受水质影响的延时自关阀门，其特征在于：所述阀芯顶端固定有按压盖，所述复位弹簧装置设置在按压盖和阀盖之间。
  8. 根据权利要求1所述的一种不受水质影响的延时自关阀门，其特征在于：所述细水道内设置有用于疏通水道的通针，通针的直径小于细水道的内径。
  9. 根据权利要求1所述的一种不受水质影响的延时自关阀门，其特征在于：所述膜片上方设置有将其压紧在出水水道的通道口上的压紧弹簧I。
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