WO2012003777A1 - 磁力止逆阀 - Google Patents

磁力止逆阀 Download PDF

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Publication number
WO2012003777A1
WO2012003777A1 PCT/CN2011/076609 CN2011076609W WO2012003777A1 WO 2012003777 A1 WO2012003777 A1 WO 2012003777A1 CN 2011076609 W CN2011076609 W CN 2011076609W WO 2012003777 A1 WO2012003777 A1 WO 2012003777A1
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WIPO (PCT)
Prior art keywords
water outlet
check valve
magnet
seat
valve
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PCT/CN2011/076609
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English (en)
French (fr)
Inventor
周华松
黄祥
陈添育
曹斌
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厦门松霖科技有限公司
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Priority claimed from CN2010202526273U external-priority patent/CN201753789U/zh
Priority claimed from CN2010102217698A external-priority patent/CN101871539B/zh
Application filed by 厦门松霖科技有限公司 filed Critical 厦门松霖科技有限公司
Publication of WO2012003777A1 publication Critical patent/WO2012003777A1/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
    • 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
    • F16K31/084—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 the magnet being used only as a holding element to maintain the valve in a specific position, e.g. check 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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/06—Check valves with guided rigid valve members with guided stems

Definitions

  • the invention relates to a magnetic check valve, in particular to a magnetic check valve used in the field of bathing and faucet.
  • the conventional check valve used in the field of bathing and faucet includes a valve body, a valve body and a spring mechanism.
  • the valve body is provided with a water outlet passage, and the water outlet passage has a water inlet end and a water outlet end.
  • the spool is slidably coupled within the fixed unit and slid between a first position and a second position, the outlet passage is in a blocked state when the spool is in the first position, and the spool is located at a non-first
  • the outlet passage is in a conducting state when in position.
  • the spring mechanism is disposed within the valve body and the spool and generates an elastic force that can act on the spool to position the spool in the first position.
  • the spring valve mechanism is arranged in the traditional check valve, and the structure is complicated, the assembly is inconvenient, the space is large, and the cost is high.
  • the invention patent term announced on July 23, 2003 by the China Patent Database is a utility model for the permanent magnet check valve. Its patent number is 02265586.7.
  • the utility model is composed of a valve body, a valve core, a valve plate and a fixing frame, and a filter screen is arranged at one end of the valve core, and a magnetic core is embedded in the inner wall of the central hole at the other end, and a gap exists with the hole wall of the magnetic core to form refrigeration.
  • the check valve is closed.
  • the pressure difference between the two ends of the valve body causes the valve piece to overcome the magnetic suction force and separate from the valve core, and the check valve is opened.
  • the utility model has the following disadvantages: 1.
  • valve piece and the valve core are sealed and sucked together by magnetic suction, and the valve piece is separated from the valve core by the pressure difference between the two ends of the valve body, due to the size of the magnetic suction force and the valve body and the valve piece
  • the relative distance between the two is inversely proportional, so when the pressure at both ends of the valve body is too large, the valve plate can be struck to make the relative distance between the valve plate and the valve core too large.
  • the excessive relative distance makes the valve plate and the valve core
  • the suction between the small suction force can not ensure that the valve plate and the valve core are automatically re-engaged together; 2. It is applied in the refrigeration equipment and cannot be directly applied to the bathing field and the faucet field.
  • the present invention provides a magnetic check valve that overcomes the deficiencies of the check valve of the prior art.
  • Magnetic check valve which includes:
  • a fixed unit having a water outlet passage therein, the water outlet passage having a water inlet end and a water outlet end;
  • a spool that is slidably coupled within the fixed unit and slidable between a first position and a second position, the direction of the first position to the second position being in the same direction as the direction from the inlet end to the outlet end, the valve
  • the water outlet channel is in a blocking state when the core is in the first position, and the water outlet channel is in an on state when the valve core is in the non-first position;
  • the fixing unit is fixed with a first magnet
  • the valve core is fixed with a second magnet
  • the first magnet and the second magnet are repelled and generate a repulsive force, and the repulsive force acting line and the spool sliding Line coincidence;
  • the water flow is downstream, then the water flow impact force acts on the valve core to overcome the repulsive force, so that the valve core moves from the first position to the second position, the water outlet channel is in a conducting state; the water flow is reversed or the flow is stopped The repulsive force acts from a non-first position to a first position, and the water outlet channel is in a blocked state.
  • the cross-sectional area of the water inlet passage is gradually changed along the sliding direction of the spool.
  • the cross-sectional area of the water inlet passage is gradually reduced along the sliding direction of the spool.
  • annular flange is protruded in the water outlet passage of the fixing unit, and the annular flange has a sealing surface facing the water outlet end;
  • a fixing seat is fixed at the water outlet end of the water outlet channel of the fixing unit, and the first magnet is fixed on the fixing seat and faces the water inlet end;
  • the spool has a sealing seat, and the second magnet is fixed to the sealing seat and faces the water outlet end.
  • the sealing seat is sleeved with a sealing ring.
  • the fixing seat and the fixing unit are fixed together by a plurality of spokes.
  • a first through hole is defined in the fixing seat, the first magnet defines a second through hole, and the first through hole axis and the second through hole axis are coincident; the sealing A guiding rod is fixed under the seat, and the guiding rod is adapted and slidably connected to the first through hole and the second through hole.
  • the fixing unit includes a valve body and a valve seat, and the valve seat and the valve body are fixed together by fastening; the annular flange is disposed on the valve body, and the fixing The seat is placed at the valve seat.
  • the sealing surface of the annular flange is provided with an inclined surface; and the upper and lower ends of the sealing surface respectively form a positioning boss.
  • a plurality of positioning blocks are further disposed on the outer surface of the spool.
  • the magnetic core repulsive force causes the spool to be in the first position, and the magnetic repulsive force overcomes the magnetic repulsive force to move the spool from the first position. Since the magnitude of the magnetic repulsive force is proportional to the relative distance between the two magnets, The greater the water flow pressure, the smaller the relative distance between the two magnets, and the greater the repulsive force, the phenomenon that the resetting cannot be completely avoided;
  • magnetic can magnetize water, and can meet the special needs of customers for drinking water or domestic water;
  • the cross-sectional area of the water inlet passage is gradually changed along the sliding direction of the valve core, and the gradual change with the water flow and water pressure can realize the flow adjustment;
  • the cross-sectional area of the water inlet passage has a small gradient along the sliding direction of the valve core, which can realize the water saving function
  • the sealing seat is sleeved outside the sealing seat, and the sealing is good, and the sealing effect is good;
  • the guiding rod is adapted to slidingly connect the first through hole and the second through hole, and has a stable and good guiding effect during the opening or resetting of the valve core;
  • the fixing unit comprises a valve body and a valve seat, and the valve seat and the valve body are fixed together by fastening, which is convenient to assemble, fast and low in cost.
  • An annular flange is protruded in the water outlet passage of the fixing unit, and the annular flange has a sealing surface facing the water outlet end, and the sealing performance is good.
  • FIG. 1 is a perspective view of a magnetic check valve of a preferred embodiment.
  • FIG. 2 is a perspective exploded view of a magnetic check valve of a preferred embodiment.
  • FIG 3 is a cross-sectional view of the magnetic check valve of the preferred embodiment, in which the magnetic check valve is in the first state.
  • FIG. 4 is a cross-sectional view of the magnetic check valve of the preferred embodiment, in which the magnetic check valve is in the second state.
  • FIG. 5 is a cross-sectional view showing the magnetic check valve of the preferred embodiment, in which the magnetic check valve is in the third state.
  • valve body 100 valve body 200, valve seat 300, outer seal ring 400, annular flange 210, fixing seat 310, spokes 320, first mounting groove 311, first magnet 500, sealing seat 110, inner sealing ring 120.
  • a magnetic check valve including a fixing unit and a valve core 100 .
  • the fixing unit includes a valve body 200, a valve seat 300 and an outer sealing ring 400.
  • the outer seal ring 400 is sleeved on the outer surface of the valve body 200.
  • a card slot is recessed in the inner surface of the tail portion of the valve body 200, and a card edge is protruded from the outer surface of the valve seat 300.
  • the card edge and the card slot are snap-fitted together to connect the valve body
  • the 200 and the valve seat 300 are fixed together.
  • the valve body 200 and the valve seat 300 are formed as water inlet passages, the head of the valve body 200 becomes the water inlet end of the water inlet passage, and the valve seat 300 becomes the water inlet passage. Out of the water.
  • An annular flange 210 is formed in the inner surface of the valve body 200, and the annular flange 210 has a sealing surface facing the water outlet end.
  • the sealing surface is preferably provided with an inclined surface to increase the sealing performance;
  • a positioning boss 211, 212 is formed on each of the upper and lower ends.
  • a fixing seat 310 is fixed in the valve seat 300.
  • the fixing seat 310 and the inner rotating surface of the valve seat 300 are fixed together by a plurality of annularly disposed spokes 320, and adjacent spokes 320 are formed as passages.
  • a first mounting groove 311 is formed in the end surface of the fixing base 310 facing the water inlet end.
  • a first magnet 500 is fixed to the first mounting groove 311.
  • the valve core 100 includes a sealing seat 110.
  • the outer surface of the sealing seat 110 is provided with an inner sealing ring 120.
  • the outer diameter of the inner sealing ring 120 is inclined to the annular flange 120. Between the largest diameter and the smallest diameter of the face.
  • a second mounting groove 111 is formed in the end surface of the sealing seat 110 facing the water outlet end.
  • a second magnet 600 is fixed to the second mounting groove 111.
  • the outer surface of the valve core 100 is further provided with a plurality of positioning blocks 130.
  • the sealing seat 110 of the valve core is slidably disposed in the water inlet passage of the fixing unit, and is interposed between the annular flange 210 of the valve body 200 and the fixing seat 310 of the valve seat 300, and the first magnet 500
  • the same direction as the end faces of the second magnet 600 causes a repulsive force to be generated between the first magnet 500 and the second magnet 600, and the repulsive force acting line and the spool sliding line coincide.
  • a guiding rod 130 is fixed under the sealing seat 110.
  • One end of the guiding rod 130 is fixed to the center of the bottom surface of the second mounting groove 111.
  • the second magnet 600 is annular, and the guiding rod 130 is sleeved and fixed. Connected to the second mounting slot 111.
  • a fixed through hole 312 is defined in the fixing base 310.
  • the first magnet 500 is annular, and the axis of the through hole 312 is aligned with the inner hole axis of the first magnet 500.
  • the guiding rod 130 is fitted and slidably connected. The inner hole of the first magnet 500 and the through hole 312.
  • the valve body 100 slides between a first position and a second position, wherein the first position means that the inner seal ring 120 of the valve body 100 abuts against the annular flange 210 of the valve body 200.
  • the upper end surface of the valve body 100 abuts against the upper positioning boss 211 in the valve body 200, and the upper end surface of the positioning block 130 on the valve core 100 abuts against the lower positioning boss 212 in the valve body 200.
  • the check valve is in a blocking state
  • the second position refers to a position close to the first magnet 500.
  • the cross-sectional area of the water inlet passage has a gradual decrease in the sliding direction of the spool along the first position to the second position, so that The difference between the cross-sectional area of the water passage passage and the cross-sectional area of the spool gradually becomes smaller.
  • the water pressure is proportional to the sliding distance of the valve core, and the sliding distance is inversely proportional to the difference between the cross-sectional area of the water passage and the cross-sectional area of the valve core, so that the water pressure and the water inlet channel can be realized.
  • the difference between the cross-sectional area of the water and the cross-sectional area of the valve core is inversely proportional to ensure a uniform water volume and achieve water saving.
  • the magnetic check valve of the invention has a water flow downstream force, and a water flow impact force acts on the valve core to overcome the repulsive force, so that the valve core moves from the first position to the second position, and the water outlet channel is in a conducting state; the water flow backwards Or the flow is interrupted, the spool is moved from the non-first position to the first position by the repulsive force, and the outlet passage is in the blocked state. And can completely avoid the phenomenon of reset failure.

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

Abstract

一种磁力止逆阀包括固定单元和阀芯（100）。固定单元内设有出水通道。阀芯滑动连接在固定单元之内并在第一位置和第二位置之间滑动，其中阀芯位于第一位置时出水通道处于阻断状态，阀芯位于非第一位置时出水通道处于导通状态。固定单元固设有第一磁铁（500），阀芯固设有第二磁铁（600）。第一磁铁和第二磁铁相排斥并产生排斥力，其方向与阀芯滑动方向重合。顺流时，水流冲击力作用在阀芯以克服排斥力，以使阀芯从第一位置向第二位置方向移动，出水通道处于导通状态；倒流或断流时，阀芯受排斥力作用从非第一位置向第一位置方向移动，出水通道处于阻断状态。该磁力止逆阀不存在复位的问题。

Description

磁力止逆阀 技术领域
本发明涉及一种磁力止逆阀，尤其是涉及一种用在沐浴领域、水龙头领域中的磁力止逆阀。
背景技术
传统的用在沐浴领域、水龙头领域中的止逆阀包括一阀体、一阀芯和一弹簧机构。所述阀体内设有出水通道，所述出水通道具有一进水端和一出水端。所述阀芯滑动连接在固定单元之内并在第一位置和第二位置之间滑动，所述阀芯位于第一位置时所述出水通道处于阻断状态，所述阀芯位于非第一位置时所述出水通道处于导通状态。所述弹簧机构设置在阀体和阀芯之内，并产生一弹力，所述弹力能够作用在阀芯使阀芯处于第一位置。传统的止逆阀之内设置有弹簧机构，结构复杂，装配不便，占用空间大，成本高。
中国专利数据库在2003年7月23日公告的发明创造名词为《永磁式单向阀》的实用新型，它的专利号为02265586.7。它由阀体、阀芯、阀片和固定架组成，在阀芯的一端装有滤网，另一端的中心孔内壁嵌装一块磁芯，并与磁芯的孔壁存在间隙，以形成制冷介质流动通道，阀片与阀芯因磁性吸力密封吸合时，单向阀关闭，当工作时因阀体内两端的压力差，使阀片克服磁性吸力脱离阀芯，单向阀开启。该实用新型存在有如下不足：1、通过磁性吸力使阀片和阀芯密封吸合在一起，通过阀体内两端的压力差使阀片脱离阀芯，由于磁性吸力的大小与阀体和阀片之间的相对距离的大小成反比，因此当阀体内两端的压力过大时，能够冲击阀片使其和阀芯之间的相对距离过大，所述过大的相对距离使阀片和阀芯之间的吸力小，所述小吸力无法保证阀片和阀芯自动重新吸合在一起；2、它应用在制冷设备中，不能直接应用至沐浴领域、水龙头领域中。
发明内容
本发明提供了一种磁力止逆阀，其克服了背景技术中的止逆阀所存在的不足。
本发明解决其技术问题的所采用的技术方案是：
磁力止逆阀，它包括：
一固定单元，它内设有出水通道，所述出水通道具有一进水端和一出水端；及
一阀芯，它滑动连接在固定单元之内并在第一位置和第二位置之间滑动，所述第一位置至第二位置的方向与进水端至出水端的方向同向，所述阀芯位于第一位置时所述出水通道处于阻断状态，所述阀芯位于非第一位置时所述出水通道处于导通状态；
所述固定单元固设有一第一磁铁，所述阀芯固设有一第二磁铁，而且，所述第一磁铁和第二磁铁相排斥并产生排斥力，所述排斥力作用线和阀芯滑动线重合；
其中：水流顺流则水流冲击力作用在阀芯以克服排斥力，以使阀芯从第一位置向第二位置方向移动，所述出水通道处于导通状态；水流倒流或断流则阀芯受排斥力作用从非第一位置向第一位置方向移动，所述出水通道处于阻断状态。
一较佳实施例之中：所述进水通道的过水截面面积沿阀芯滑动方向渐变。
一较佳实施例之中：所述进水通道的过水截面面积积沿阀芯滑动方向渐变小。
一较佳实施例之中：
所述固定单元的出水通道的之内凸设有一环形凸缘，所述环形凸缘具有一朝向出水端的密封面；
所述固定单元的出水通道的出水端部处固设有一固定座，所述第一磁铁固设在固定座并朝向进水端；
所述阀芯具有一密封座，所述第二磁铁固设在密封座并朝向出水端。
一较佳实施例之中：所述密封座之外套设有密封圈。
一较佳实施例之中：所述固定座和固定单元之间通过若干辐条固定在一起。
一较佳实施例之中：所述固定座处开设有一第一贯穿孔，所述第一磁铁开设有一第二贯穿孔，所述第一贯穿孔轴线和第二贯穿孔轴线重合；所述密封座之下固设有一导向杆，所述导向杆适配并滑动连接第一贯穿孔和第二贯穿孔。
一较佳实施例之中：所述固定单元包括一阀体和一阀座，所述阀座和阀体之间通过扣接固定在一起；所述环形凸缘设置在阀体，所述固定座设置在阀座。
一较佳实施例之中：所述环形凸缘的密封面设置倾斜面；密封面的上下两端各形成一定位凸台。
一较佳实施例之中：所述阀芯之外回转面上还设有若干个定位块。
本技术方案与背景技术相比，它具有如下优点：
1.通过磁性排斥力使阀芯处于第一位置，通过水流压力克服磁性排斥力使阀芯从第一位置移出，由于磁性排斥力的大小和二磁铁之间的相对距离的大小成正比，因此水流压力越大，二磁铁之间的相对距离越小，排斥力也越大，则能够完全避免出现复位不能现象；
2.将磁性排斥力引入沐浴领域、水龙头领域中，磁性能够磁化水，能够满足客户对饮用水或生活用水的特殊需求；
3.进水通道的过水截面面积沿阀芯滑动方向渐变，该渐变和水流水压配合能够实现流量调节；
4.进水通道的过水截面面积积沿阀芯滑动方向渐变小，能够实现节水功能；
5.密封座之外套设有密封圈，采用柔性密封，密封效果好；
6.导向杆适配滑动连接第一贯穿孔和第二贯穿孔，在阀芯开启或复位过程中均具有稳定良好的导向作用；
7.固定单元包括一阀体和一阀座，阀座和阀体之间通过扣接固定在一起，装配方便，快速，成本低。
8.固定单元的出水通道的之内凸设有一环形凸缘，环形凸缘具有一朝向出水端的密封面，密封性能佳。
附图说明
下面结合附图和实施例对本发明作进一步说明。
图1绘示了一较佳实施例的磁力止逆阀的立体示意图。
图2绘示了一较佳实施例的磁力止逆阀的立体分解示意图。
图3绘示了一较佳实施例的磁力止逆阀的剖面示意图，此时磁力止逆阀处于第一状态。
图4绘示了一较佳实施例的磁力止逆阀的剖面示意图，此时磁力止逆阀处于第二状态。
图5绘示了一较佳实施例的磁力止逆阀的剖面示意图，此时磁力止逆阀处于第三状态。
标号说明：阀芯100、阀体200、阀座300、外密封圈400、环形凸缘210、固定座310、辐条320、第一安装槽311、第一磁铁500、密封座110、内密封圈120、第二安装槽111、第二磁铁600、导向杆130、贯穿孔312。
具体实施方式
实施例，请查阅图1至图5，磁力止逆阀，它包括一固定单元和一阀芯100。
所述固定单元包括一阀体200、一阀座300和一外密封圈400。所述外密封圈400套设在阀体200之外回转面。所述阀体200的尾部内回转面处凹设有一卡槽，所述阀座300之外回转面凸设有一卡缘，所述卡缘和卡槽适配卡接在一起，以将阀体200和阀座300固接在一起。本实施例之中，所述阀体200和阀座300之内形成为进水通道，所述阀体200的头部成为进水通道的进水端，所述阀座300成为进水通道的出水端。所述阀体200之内回转面向内凸设有一环形凸缘210，所述环形凸缘210具有一朝向出水端的密封面，所述密封面最好设置倾斜面，以增加密封性能；密封面的上下两端各形成一定位凸台211、212。所述阀座300之内固设有一固定座310，所述固定座310和阀座300的内回转面之间通过若干环形陈列的辐条320固定在一起，相邻辐条320之间形成为通路。所述固定座310之朝向进水端的端面处凹设形成有一第一安装槽311。所述第一安装槽311处固设有一第一磁铁500。
所述阀芯100包括一密封座110，所述密封座110之外回转面套设有一内密封圈120，而且，所述内密封圈120的外径介于所述环形凸缘120的倾斜密封面的最大直径和最小直径之间。所述密封座110之朝向出水端的端面凹设形成有一第二安装槽111。所述第二安装槽111处固设有一第二磁铁600。所述阀芯100之外回转面上还设有若干个定位块130。
所述阀芯的密封座110滑动设置在固定单元的进水通道之内，并介于阀体200的环形凸缘210和阀座300的固定座310之间，而且，所述第一磁铁500和第二磁铁600的相面向端同极，使得第一磁铁500和第二磁铁600之间产生排斥力，所述排斥力作用线和阀芯滑动线重合。
为了保证密封座110的滑动方向，最好增设一导向机构。所述密封座110之下固设有一导向杆130，所述导向杆130的一端固接在第二安装槽111的底面中心，所述第二磁铁600为环形，它套接导向杆130并固接在第二安装槽111。所述固定座310处开设有一贯穿孔312，所述第一磁铁500为环形，所述贯穿孔312轴线和第一磁铁500的内孔轴线重合并对齐；所述导向杆130适配并滑动连接所述第一磁铁500的内孔和贯穿孔312。
本实施之中，所述阀芯100在第一位置和第二位置之间滑动，所述第一位置是指所述阀芯100的内密封圈120紧抵在阀体200的环形凸缘210的密封面上的位置，阀芯100的上端面抵靠于阀体200内的上定位凸台211，阀芯100上定位块130的上端面抵靠于阀体200内的下定位凸台212；此时止逆阀处于阻断状态，所述第二位置是指接近第一磁铁500的位置。
当正向水压过小时，所述水压作用在密封座310的作用力小，所述作用力小于排斥力，则阀芯100无法移动，阀芯100处于第一位置，止逆阀处于阻断状态，请查阅图3。
当正向水压大时，所述水压作用在密封座310的作用力大，所述作用力大于排斥力，则阀芯100开始移动，从第一位置移动至非第一位置，所述非第一位置介于第一位置和第二位置之间，止逆阀处于导通状态，请查阅图5。
倒流时，出现反向水压，所述水压作用在密封座310的作用力和排斥力同向，所述作用力和排斥力的合力使阀芯100保持在第一位置，止逆阀处于阻断状态，请查阅图4。
另一较佳实施例之中，它与上一较佳实施例不同之处在于：所述进水通道的过水截面面积积沿第一位置至第二位置的阀芯滑动方向渐变小，使得进水通道过水截面面积和阀芯的横截面面积之差逐渐变小。所述水压大小与阀芯滑动距离大小成正比，所述滑动距离大小和进水通道过水截面面积和阀芯的横截面面积之差大小成反比，则能够实现水压大小和进水通道过水截面面积和阀芯的横截面面积之差大小成反比，能够保证水量均匀，实现节水。
以上所述，仅为本发明较佳实施例而已，故不能依此限定本发明实施的范围，即依本发明专利范围及说明书内容所作的等效变化与修饰，皆应仍属本发明涵盖的范围内。
工业实用性
本发明一种磁力止逆阀，其水流顺流则水流冲击力作用在阀芯以克服排斥力，以使阀芯从第一位置向第二位置方向移动，出水通道处于导通状态；水流倒流或断流则阀芯受排斥力作用从非第一位置向第一位置方向移动，出水通道处于阻断状态。且能够完全避免出现复位不能现象。

Claims (10)

  1. 磁力止逆阀，它包括：
    一固定单元，它内设有出水通道，所述出水通道具有一进水端和一出水端；及
    一阀芯，它滑动连接在固定单元之内并在第一位置和第二位置之间滑动，所述第一位置至第二位置的方向与进水端至出水端的方向同向，所述阀芯位于第一位置时所述出水通道处于阻断状态，所述阀芯位于非第一位置时所述出水通道处于导通状态；
    其特征在于：
    所述固定单元固设有一第一磁铁，所述阀芯固设有一第二磁铁，而且，所述第一磁铁和第二磁铁相排斥并产生排斥力，所述排斥力作用线和阀芯滑动线重合；
    其中：水流顺流则水流冲击力作用在阀芯以克服排斥力，以使阀芯从第一位置向第二位置方向移动，所述出水通道处于导通状态；水流倒流或断流则阀芯受排斥力作用从非第一位置向第一位置方向移动，所述出水通道处于阻断状态。
  2. 根据权利要求1所述的磁力止逆阀，其特征在于：所述进水通道的过水截面面积沿阀芯滑动方向渐变。
  3. 根据权利要求1所述的磁力止逆阀，其特征在于：所述进水通道的过水截面面积积沿阀芯滑动方向渐变小。
  4. 根据权利要求1或2或3所述的磁力止逆阀，其特征在于：
    所述固定单元的出水通道的之内凸设有一环形凸缘，所述环形凸缘具有一朝向出水端的密封面；
    所述固定单元的出水通道的出水端部处固设有一固定座，所述第一磁铁固设在固定座并朝向进水端；
    所述阀芯具有一密封座，所述第二磁铁固设在密封座并朝向出水端。
  5. 根据权利要求4所述的磁力止逆阀，其特征在于：所述密封座之外套设有密封圈。
  6. 根据权利要求4所述的磁力止逆阀，其特征在于：所述固定座和固定单元之间通过若干辐条固定在一起。
  7. 根据权利要求4所述的磁力止逆阀，其特征在于：所述固定座处开设有一第一贯穿孔，所述第一磁铁开设有一第二贯穿孔，所述第一贯穿孔轴线和第二贯穿孔轴线重合；所述密封座之下固设有一导向杆，所述导向杆适配并滑动连接第一贯穿孔和第二贯穿孔。
  8. 根据权利要求4所述的磁力止逆阀，其特征在于：所述固定单元包括一阀体和一阀座，所述阀座和阀体之间通过扣接固定在一起；所述环形凸缘设置在阀体，所述固定座设置在阀座。
  9. 根据权利要求4所述的磁力止逆阀，其特征在于：所述环形凸缘的密封面设置倾斜面；密封面的上下两端各形成一定位凸台。
  10. 根据权利要求9所述的磁力止逆阀，其特征在于：所述阀芯之外回转面上还设有若干个定位块。
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