CN106678427B - Time-delay self-closing flushing valve - Google Patents

Time-delay self-closing flushing valve Download PDF

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Publication number
CN106678427B
CN106678427B CN201710160520.2A CN201710160520A CN106678427B CN 106678427 B CN106678427 B CN 106678427B CN 201710160520 A CN201710160520 A CN 201710160520A CN 106678427 B CN106678427 B CN 106678427B
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delay
valve
diaphragm
cover
iron core
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CN106678427A (en
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鲍伟军
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Quanzhou Zongneng Solenoid Valve Co ltd
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Quanzhou Zongneng Solenoid Valve Co ltd
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Publication of CN106678427A publication Critical patent/CN106678427A/en
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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
    • F16K31/086—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 movable and actuating a second magnet connected to the closing element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Driven Valves (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

The invention discloses a time-delay self-closing flushing valve which comprises a time-delay external member, a pressing external member, a valve core external cover with a water inlet and a water outlet and a valve core external member arranged in the valve core external cover, wherein a through hole is formed between the water inlet and the water outlet, the valve core external member is arranged above the through hole, a diaphragm gland is arranged above the valve core external member, the time-delay external member comprises a time-delay valve cover, a magnet block arranged in the time-delay valve cover, a time-delay spring and a movable iron core, a movable iron core support is hermetically arranged above the diaphragm gland, the upper end of the movable iron core abuts against the corresponding side wall of a containing cavity through a spring, the lower end of the movable iron core is hermetically connected with the diaphragm gland, a time-delay cavity is formed between the time-delay valve cover and the movable iron core support, and damping oil is filled in the time-delay cavity. The invention is a time-delay self-closing flushing valve which is easy and convenient to open, accurately delays time after being opened and automatically closes, has reasonable structural design, safety and reliability, and has long service cycle because all parts are less worn in the use process.

Description

Time-delay self-closing flushing valve
Technical Field
The invention relates to a time-delay self-closing flushing valve.
Background
The time-delay self-closing flushing valve in the market at present mostly adopts the time-delay flushing valve of movable seal piston type, and its sealing rubber is easy wearing and tearing, can cause the valve body time delay inefficacy to reveal after using for a period of time, causes the water waste, and life is short to this kind of flushing valve receives the water pressure to influence greatly, has that the button is felt very heavy, presses defects such as hard.
Disclosure of Invention
The invention aims to provide a time-delay self-closing flushing valve which is light and convenient to open, accurately delays time after being opened and automatically closes, and has reasonable structural design, safety, reliability and long service cycle.
In order to achieve the above purpose, the solution of the invention is:
a time-delay self-closing flushing valve comprises a time-delay external member, a pressing external member, a valve core outer cover with a water inlet and a water outlet and a valve core external member arranged in the valve core outer cover, wherein a through hole is formed between the water inlet and the water outlet; the delay external member comprises a delay valve cover, a magnet block, a delay spring and a movable iron core, wherein the magnet block is arranged in the delay valve cover from top to bottom, the delay spring is in a compressed state, the movable iron core support is arranged above the diaphragm gland in a sealing manner, a containing cavity for placing the movable iron core is formed in the movable iron core support, the upper end of the movable iron core is abutted against the corresponding side wall of the containing cavity through the spring in the compressed state, the lower end of the movable iron core is connected with the diaphragm gland in a sealing manner, the lower side wall of the movable iron core support is connected with the corresponding inner side wall of the delay valve cover in a sealing manner, a delay cavity is formed between the delay valve cover and the movable iron core support, damping oil is filled in the delay cavity, the magnet block is arranged in the delay valve cover and positioned at the top of the delay cavity, the upper end of the delay spring is fixedly connected with the lower end face of the magnet block, and the lower end of the delay spring is fixedly sleeved and fixed outside the movable iron core support; press the external member and establish including button and cover button cover outside the button, the lower extreme of button stretches into in the time delay valve gap and with magnet piece looks fixed connection, the lower extreme inboard of button cover with the upper end outside sealing connection of time delay valve gap, the lateral wall of button with the corresponding inside wall sealing contact of button cover.
The time delay intracavity still is provided with a cover and establishes the outer magnetic conduction frame of magnet piece, the below of magnetic conduction frame has an opening, move the iron core support and pass through the opening stretches into in the magnetic conduction frame, the lower extreme that moves the iron core is provided with an inverted T type post, the outer parcel of inverted T type post has and is used for sealing the iron core sealing rubber that moves of diaphragm gland.
The utility model discloses a time delay valve gap, including time delay valve gap, button cover, outer seal ring, button cover, time delay valve gap, it prevents the leak protection rubber sleeve that damping oil leaked to be provided with one between the button cover, leak protection rubber sleeve includes L type rubber circle, the lower extreme of L type rubber circle is provided with external seal ring and interior sealing ring, the external seal ring clamp is established the button cover with between the lateral wall of time delay valve gap, interior sealing ring wears to overlap and is in outside the top of time delay valve gap, the button with the annular groove has been seted up to button cover sliding contact's position, the upper end of L type rubber circle inlays to be established in the annular groove, have in the annular groove and supply the stroke space that the upper end of L type rubber circle reciprocated, the button is in the part card below the annular groove is established in the button cover.
A water inlet channel is formed in the valve core main body and is communicated with the water inlet, the water stopping rubber pad is clamped at the lower end of the valve core main body, the rubber diaphragm is clamped at the upper end of the valve core main body and is hermetically connected with the lower surface of the diaphragm gland, a water pressure balance cavity is formed between the rubber diaphragm and the diaphragm gland, the water outlet end of the water inlet channel is communicated with the water pressure balance cavity, and a first limiting step clamped with the lower end of the diaphragm gland is arranged in the valve core outer cover; the diaphragm gland is internally provided with a flow guide hole communicated with the water pressure balance cavity, the flow guide hole is positioned in the joint of the diaphragm gland and the movable iron core support, the diaphragm gland is internally provided with a pressure relief hole isolated from the flow guide hole, the diaphragm gland is internally provided with a pressure relief water flow channel along the radial direction, the water inlet of the pressure relief water flow channel is communicated with the pressure relief hole, and the water outlet of the pressure relief water flow channel is arranged on the side edge of the diaphragm gland.
The rubber diaphragm is a straight line type rubber diaphragm or an L type rubber diaphragm or a U type rubber diaphragm, the shaft sleeve is provided with a diaphragm lantern ring on the upper portion of the shaft sleeve and a valve core lantern ring on the lower portion of the shaft sleeve, the diaphragm lantern ring and the valve core lantern ring are integrally formed, the diaphragm lantern ring is sleeved on the outer portion of the rubber diaphragm and attached to the outer side wall of the rubber diaphragm, the upper end face of the shaft sleeve is connected with the lower edge of the rubber diaphragm in a sealing mode, the valve core lantern ring is sleeved on the outer portion of the valve core main body, and a second limiting step used for being clamped on the lower end face of the diaphragm lantern ring is arranged in the valve core outer cover.
The lower part of the valve core main body is provided with a convex column, a concave part is arranged between the convex column and the side wall of the valve core main body, the water stopping rubber pad is arranged in the concave part, the water stopping rubber pad is in sealing contact with the upper end surface of the through hole, the upper part of the valve core main body is provided with an annular groove, and the rubber diaphragm is clamped in the annular groove; and a self-cleaning needle for preventing the water inlet channel from being blocked is arranged in the water inlet channel, and the top end of the self-cleaning needle is movably fixed on the diaphragm press cover.
The button sleeve is connected with the delay valve cover in a buckling mode, the delay valve cover is connected with the valve core outer cover in a buckling mode, and a gap is reserved between the delay valve cover and the valve core outer cover.
After the structure is adopted, the working principle of the time-delay self-closing flushing valve is as follows:
(1) When the valve core is in a closed state, the magnetic force generated by the magnet block on the movable iron core is insufficient to enable the movable iron core to move upwards, the movable iron core plays a role in sealing the diaphragm gland, the water pressure in the valve core external member is equivalent to that of the water inlet, the water inlet of the valve core outer cover is sealed through the water stopping rubber gasket, and the water way is in a closed state;
(2) When the button is pressed down, the button drives the magnet block to move downwards close to the movable iron core, meanwhile, the movable iron core is attracted by the magnet block, the reverse acting force of the spring is gradually overcome, at the moment that the upward acting force of the magnet block on the movable iron core is greater than the downward acting force of the spring on the movable iron core, the movable iron core moves upwards in the accommodating cavity, the diaphragm gland loses the sealing effect of the movable iron core, water in the valve core sleeve is discharged, the pressure in the valve core sleeve is smaller than the water inlet pressure of the water inlet, the valve core main body moves upwards under the pushing of the water inlet pressure, the water inlet of the valve core outer cover loses the sealing effect of the water-stopping rubber pad, the water inlet of the valve core outer cover is communicated with the water outlet, and the water path is completely opened;
(3) Because the delay intracavity is filled with damping oil, and the lower extreme of magnet piece is fixed with the delay spring that is in compression state, when loosening the button, the magnet piece can slowly keep away from and move the iron core rebound, move the iron core and lose the appeal of magnet piece gradually, in the twinkling of an eye that the magnet piece is less than the downward effort of spring to moving the iron core to the upward effort of moving the iron core, move the iron core and restore the normal position in holding the intracavity, seal the diaphragm gland, the water nowhere in the case external member is excreted, water pressure crescent, promote the valve core main part rebound gradually until stagnant water rubber pad seals the water inlet, the water route is closed gradually, the button resets.
The invention relates to a time-delay self-closing flushing valve, which breaks through the traditional structure of the time-delay self-closing flushing valve, skillfully combines the action between an iron magnet and a movable iron core, and the action of a time-delay spring and damping oil on the iron magnet respectively, and designs the time-delay self-closing flushing valve with a novel structure. According to different requirements of users, the delay time of the delay self-closing flushing valve can be adjusted by selecting the viscosity of the damping oil and the elastic coefficient of the delay spring. For the same time-delay self-closing flushing valve, because the abrasion of the time-delay spring is small, the damping oil is not leaked, and the acting force between the magnet block and the movable iron core is durable, the time delay time is accurate and fixed.
The invention is a time-delay self-closing flushing valve which is easy and convenient to open, accurately delays time after being opened and automatically closes, has reasonable structural design, safety and reliability, and has long service cycle because all parts are less worn in the process of opening and closing the water way.
Further, the button with the annular groove has been seted up to button cover sliding contact's position, the upper end of L type rubber circle is inlayed and is established in the annular groove, it can supply to have in the annular groove the stroke space that the upper end of L type rubber circle reciprocated can reduce the button like this and press and reset the in-process wearing and tearing to the leak protection rubber sleeve, prolong the life of leak protection rubber sleeve.
Furthermore, be provided with in the inlet channel and prevent the self-cleaning needle that inlet channel blockked up, self-cleaning needle is mobile to wear to locate in the inlet channel for water can enter into the inlet channel, washs inlet channel, and the setting of self-cleaning needle can prolong the life of case main part.
Drawings
FIG. 1 is a schematic structural diagram of a time-delay self-closing flush valve of the present invention;
FIG. 2 is an enlarged view of A in FIG. 1;
FIG. 3 is a schematic view showing the structure of the push button and the leakage-proof rubber sleeve in the present invention.
In the figure:
valve core outer cover 1 via hole 11
First limit step 12 and second limit step 13
Valve core external member 2 rubber diaphragm 21
Land 211 spool body 22
Convex column 221 balance hole 222
Water inlet hole 24 of water-stop rubber pad 23
Self-cleaning needle 241 diaphragm gland 3
Diversion hole 31 pressure relief hole 32
Pressure relief water flow channel 33 connecting strip 34
Shaft sleeve 5 of water pressure balance cavity 4
Magnet block 61 of time-delay valve cover 6
Time-delay spring 62 moving iron core 63
Inverted T-shaped post 631 movable iron core sealing rubber 632
First contact sealing ring 641 of movable iron core support 64
First contact seal 642 receptacle 65
Spring 66 boss 67
Time-delay cavity 7 with convex strip 68
Magnetic conduction frame 71 button 81
Annular groove 811 push button sleeve 82
First step wall 821 and second step wall 822
Strip bayonet 823 leak-proof rubber sleeve 9
L-shaped rubber ring 91 outer sealing ring 92
Inner sealing ring 93
Detailed Description
In order to further explain the technical scheme of the invention, the invention is explained in detail by the specific embodiment.
A time-delay self-closing flushing valve is shown in figures 1-2 and comprises a valve core outer cover 1 with a water inlet and a water outlet and a valve core external member 2 installed in the valve core outer cover 1, wherein a through hole 11 is formed between the water inlet and the water outlet of the valve core outer cover 1, the valve core external member 2 is arranged above the through hole 11, and a diaphragm gland 3 is arranged above the valve core external member 2.
The valve core kit 2 comprises a rubber diaphragm 21, a valve core main body 22 and a water-stopping rubber pad 23 which are arranged from top to bottom, wherein a water inlet pore passage 24 is formed in the valve core main body 22, a convex column 221 is arranged at the lower part of the valve core main body 22, a balance hole 222 is formed at the lower end of the convex column 221, one end of the balance hole 222 is communicated with the through hole 11, and the other end of the balance hole 222 is communicated with the water inlet pore passage 24. A U-shaped concave part is formed between the convex column 221 and the side wall of the valve core main body 22, the water-stopping rubber pad 23 is installed in the U-shaped concave part, the water-stopping rubber pad 23 is in sealing contact with the upper end face of the through hole 11, an annular groove is formed in the upper portion of the valve core main body 22, the rubber diaphragm 21 is clamped in the annular groove, the rubber diaphragm 21 is a U-shaped rubber diaphragm, and the upper edge of the rubber diaphragm 21 is connected with the lower surface of the diaphragm gland 3 in a sealing mode. The rubber diaphragm 21 may be a straight rubber diaphragm or an L-shaped rubber diaphragm, but the sealing effect of the U-shaped rubber diaphragm is better in terms of the sealing effect.
The round hole has been seted up at rubber diaphragm 21's axial direction, rubber diaphragm 21 outwards is formed with an annular flange along the week of round hole, be formed with step 211 between the lateral wall of this annular flange and round hole, the existence of this step 211 makes rubber diaphragm 21 can block to establish in the annular groove, be formed with the U-shaped groove between annular flange and the lateral wall of rubber diaphragm 21, diaphragm gland 3 is seted up flutedly on the surface towards rubber diaphragm 21, consequently rubber diaphragm 21's U-shaped groove and diaphragm gland 3's recess form water pressure balance chamber 4 jointly, the play water end and the water pressure balance chamber 4 intercommunication of inlet duct 24.
The diaphragm gland 3 is internally and vertically provided with a flow guide hole 31, the water inlet end of the flow guide hole 31 is communicated with the water pressure balance cavity 4, the water outlet end of the flow guide hole 31 is arranged on the upper surface of the diaphragm gland 3, the central position of the diaphragm gland 3 is internally provided with a pressure relief hole 32 isolated from the flow guide hole 31, the diaphragm gland 3 is internally provided with a pressure relief water flow channel 33 along the radial direction, the water inlet of the pressure relief water flow channel 33 is communicated with the pressure relief hole 32, and the water outlet of the pressure relief water flow channel 33 is arranged on the side edge of the diaphragm gland 3.
Rubber diaphragm 21 overcoat is equipped with a axle sleeve 5, axle sleeve 5 has the diaphragm lantern ring that is located 5 upper portions of axle sleeve and the case lantern ring that is located the 5 lower parts of axle sleeve, the diaphragm lantern ring and the case lantern ring integrated into one piece of case lantern ring, the diaphragm lantern ring cover is established outside rubber diaphragm 21 and is in the same place with the lateral wall laminating of rubber diaphragm 21, the up end of axle sleeve 5 is in the same place with the lower limb sealing connection of rubber diaphragm 21, axle sleeve 5 plays the guard action to rubber diaphragm 21, the setting is in order to prevent that rubber diaphragm 21 from excessively tensile deformation under the pressure effect of water like this, guarantee rubber diaphragm 21's life, case lantern ring cover is established outside case main part 22, case main part 22 can reciprocate in axle sleeve 5.
The lower end of the diaphragm gland 3 is provided with a first limit step 12 in the valve core outer cover 1, the lower end of the diaphragm lantern ring of the shaft sleeve 5 is provided with a second limit step 13 in the valve core outer cover 1, the first limit step 12 is located above the second limit step 13, and the valve core external member 2 is installed in the valve core outer cover 1.
The time-delay self-closing flushing valve further comprises a time-delay external member and a pressing external member, wherein the time-delay external member comprises a time-delay valve cover 6, a magnet block 61, a time-delay spring 62 and a movable iron core 63 which are arranged from top to bottom are installed in the time-delay valve cover 6, the time-delay spring 62 is in a compression state, a movable iron core support 64 is arranged above the diaphragm gland 3 in a sealing mode, a containing cavity 65 for placing the movable iron core is formed in the movable iron core support 64, the upper end of the movable iron core 63 abuts against the corresponding side wall of the containing cavity 65 through the spring 66 in the compression state, an inverted T-shaped column 631 is arranged at the lower end of the movable iron core 63, movable iron core sealing rubber 632 wraps the inverted T-shaped column 631, and the movable iron core sealing rubber 632 is used for sealing the pressure relief hole 32 of the diaphragm gland 3. The lower end face of the movable iron core support 64 is provided with a sealing bottom groove, a first contact sealing ring 641 which is in sealing contact with the upper end face of the diaphragm gland 3 is arranged in the sealing bottom groove, and the water outlet end of the diversion hole 31 is arranged in the joint of the diaphragm gland 3 and the movable iron core support 64, so that the diversion hole 31 is ensured to be isolated from the water outlet of the pressure relief drainage channel 33, and water in the diversion hole 31 can only flow into the pressure relief drainage channel 33 through the pressure relief hole 32.
A sealing side groove is formed in the lower side wall of the movable iron core support 64 along the peripheral edge of the movable iron core support, and a second contact sealing ring 642 in sealing contact with the corresponding inner side wall of the delay valve cover 6 is arranged in the sealing side groove, so that the movable iron core support 64 and the delay valve cover 6 are in sealing connection. A delay cavity 7 is formed between the delay valve cover 6 and the movable iron core support 64, damping oil is filled in the delay cavity 7, the magnet block 61 is installed in the delay valve cover 6 and located at the top of the delay cavity 7, the upper end of the delay spring 62 is fixedly connected with the lower end face of the magnet block 61, the lower end of the delay spring 62 is fixedly sleeved outside the movable iron core support 64 in a penetrating mode, a magnetic conduction frame 71 covering the magnet block 61 is further arranged in the delay cavity 7, an opening is formed in the lower portion of the magnetic conduction frame 71, the movable iron core support 64 extends into the magnetic conduction frame 71 through the opening, the magnetic conduction frame 71 enables the magnetic force of the magnet block 61 to be concentrated, and the magnetic force effect of the magnet block 61 on the movable iron core 63 is increased.
The pressing kit comprises a button 81 and a button sleeve 82 sleeved outside the button 81, the upper end of the delay valve cover 6 is provided with an opening communicated with the delay cavity 7, the lower end of the button 81 extends into the delay valve cover 6 through the opening and is fixedly connected with the magnetic conduction frame 71, the delay valve cover 6 is upwards provided with a boss 67 along the opening edge, a flat table surface is formed between the outer end edge of the delay valve cover 6 and the boss 67, a leakage-proof rubber sleeve 9 for preventing damping oil from leaking is arranged between the delay valve cover 6 and the button sleeve 82, as shown in fig. 1 and 3, the leakage-proof rubber sleeve 9 comprises an L-shaped rubber ring 91, the lower end of the L-shaped rubber ring 91 is provided with an outer sealing ring 92 and an inner sealing ring 93, the button sleeve 82 is provided with a first step wall 821 which is in contact with the outer sealing ring 92 and a second step wall 822 which is in contact with the L-shaped rubber ring 91, which are sequentially arranged from bottom to top, and the outer sealing ring 92 is clamped between the first step wall of the button sleeve 82 and the platform surface of the delay valve cover 6, so that the button sleeve 82 and the platform surface of the delay valve cover 6 are sealed. The inner sealing ring 93 is sleeved outside the boss 67 of the delay valve cover 6 in a penetrating manner, an annular groove 811 is formed in the position where the button 81 is in sliding contact with the button sleeve 82, the upper end part of the L-shaped rubber ring 91 is embedded in the annular groove 811, a stroke space for the upper end part of the L-shaped rubber ring 91 to move up and down is formed in the annular groove 811, and the part of the button 81 below the annular groove 811 is clamped in the button sleeve 82, so that sealing between the button 81 and the delay valve cover 6 and between the button 81 and the button sleeve 82 is realized, abrasion of the button 81 to the leakage-proof rubber sleeve 9 in the pressing and resetting processes can be reduced, and the service life of the leakage-proof rubber sleeve 9 is prolonged.
The button sleeve 82 is connected with the delay valve cover 6 in a buckling mode, the delay valve cover 6 is connected with the valve core outer cover 1 in a buckling mode, specifically, the inner diameter of the button sleeve 82 is larger than the outer diameter of the upper end of the delay valve cover 6, the button sleeve 82 covers the upper portion of the delay valve cover 6, a plurality of strip-shaped bayonets 823 are arranged on the side wall of the button sleeve 82, protruding strips 68 matched with the strip-shaped bayonets 823 are arranged on the outer side wall of the delay valve cover 6, the protruding strips 68 are clamped into the corresponding strip-shaped bayonets 823, the button sleeve 82 and the delay valve cover 6 are connected in a combined mode, the inner diameter of the lower end of the delay valve cover 6 is larger than the outer diameter of the upper end of the valve core outer cover 1, a gap is formed between the delay valve cover 6 and the valve core outer cover 1, water in the pressure relief water flow channel 33 flows out from a water outlet of the valve core outer cover 1 through the gap, strip-shaped bayonets (not shown in the figure) are arranged on the side wall of the lower end of the delay valve cover 6, protruding strips (not shown in the figure) matched with the outer cover 1 are arranged on the outer side wall of the valve core outer cover 1, and the protruding strips (not shown in the figure), and the corresponding strip-shaped bayonets are connected in a combined mode.
After the structure is adopted, the working principle of the time-delay self-closing flushing valve is as follows:
(1) When the valve core is in a closed state, the magnetic force generated by the magnet block 61 on the movable iron core 63 is not enough to move the movable iron core 63 upwards, the movable iron core sealing rubber 632 plays a role in sealing the pressure relief hole 32 of the diaphragm gland 3, the water pressure in the water pressure balance cavity 4 is equivalent to that of the water inlet, the water inlet (namely the position of the through hole 11) of the valve core outer cover 1 is sealed through the water stopping rubber gasket 23, and the water channel is in a closed state;
(2) When the button 81 is pressed, the button 81 drives the magnet block 61 to move downwards close to the movable iron core, meanwhile, the movable iron core 63 is attracted by the magnet block 61, the reverse acting force of the spring 66 is gradually overcome, at the moment that the upward acting force of the magnet block 61 on the movable iron core 63 is greater than the downward acting force of the spring 66 on the movable iron core 63, the movable iron core 63 moves upwards in the accommodating cavity 65, at the moment, the pressure relief hole 32 of the diaphragm gland 3 loses the sealing effect of the movable iron core 63, so that water in the water pressure balance cavity 4 can flow into the pressure relief hole 32 through the flow guide hole 31 on the diaphragm gland 3 and then flows to the water outlet of the valve core outer cover 1 through the pressure relief water flow channel 33, at the moment, because the pressure in the water pressure balance cavity 4 is discharged and reduced, the pressure of the water pressure in the water pressure balance cavity 4 and the water inlet pressure of the water inlet form an obvious pressure difference, the pressure in the water pressure balance cavity 4 is less than the water inlet pressure of the water inlet, the valve core main body 22 moves upwards under the pushing of the water inlet pressure, the water inlet of the valve core outer cover 1 loses the sealing effect of the water sealing rubber gasket 23, the water outlet cover 1 is communicated with the water inlet, and the water channel is completely opened;
(3) Because the delay cavity 7 is filled with damping oil, and the lower end of the magnet block 61 is fixed with the delay spring 62 in a compressed state, when the button 81 is released, the magnet block 61 can slowly move upwards away from the movable iron core 63, the movable iron core 63 gradually loses the attraction of the magnet block 61, when the upward acting force of the magnet block 61 on the movable iron core 63 is smaller than the downward acting force of the spring 66 on the movable iron core 63, the movable iron core 63 restores to the original position in the accommodating cavity 65, the movable iron core sealing rubber 632 seals the pressure relief hole 32 of the diaphragm gland 3 again, and at the same time, a small part of water flows to the water pressure balancing cavity 4 through the water inlet hole 24 in the valve core main body 22 to enter water and pressurize, so that no part of water in the water pressure balancing cavity 4 is drained, the pressure in the water pressure balancing cavity 4 gradually increases, the valve core main body 22 is gradually pushed to move downwards until the water inlet is sealed by the water stopping rubber pad 23, the valve core is gradually closed, and the button 81 resets.
The invention relates to a time-delay self-closing flushing valve, which breaks through the traditional structure of the time-delay self-closing flushing valve, skillfully combines the action between a ferromagnetic block 61 and a movable iron core 63, and the action of a time-delay spring 62 and damping oil on the ferromagnetic block 61 respectively, designs a time-delay self-closing flushing valve with a novel structure, can realize the purpose of automatically opening and closing a water path in a time-delay manner only by pressing a button 81, and can completely avoid the influence of water pressure only by overcoming the common acting force of the damping oil and the time-delay spring 62 on the ferromagnetic block 61 in the pressing process, so that people feel more labor-saving and easier when pressing the button 81. The delay time of the delay self-closing flushing valve can be adjusted by selecting the viscosity of the damping oil and the elastic coefficient of the delay spring 62 according to different requirements of users. For the same time-delay self-closing flushing valve, because the abrasion of the time-delay spring 62 is small, the damping oil is not leaked, and the acting force between the magnet block 61 and the movable iron core 63 is durable, the time delay is accurate and fixed.
The invention is a time-delay self-closing flushing valve which is light and convenient to open, accurately delays time after being opened and automatically closes, has reasonable structural design, safety and reliability, and has long service cycle because the abrasion of each part is small in the opening and closing processes of a waterway.
Further, as shown in fig. 2, a self-cleaning needle 241 for preventing the water inlet channel 24 from being blocked is arranged in the water inlet channel 24, the upper portion of the self-cleaning needle 241 is spiral, a fixing strip 34 extending downwards is arranged on the inner side of the top of the membrane gland 3, the upper portion of the self-cleaning needle 241 is wound on the fixing strip 34 so as to be fixed on the membrane gland 3, a gap is formed between the self-cleaning needle 241 and the side wall of the balance hole 222, and as the valve core main body 22 moves up and down, the self-cleaning needle 241 can movably penetrate through the water inlet channel 24 and the balance hole 222, so that water can enter the water inlet channel 24 from the balance hole 222 to clean the water inlet channel 24, and the service life of the valve core main body 22 can be prolonged due to the arrangement of the self-cleaning needle 241.
The above embodiments and drawings are not intended to limit the form and style of the product of the present invention, and any suitable changes or modifications thereof by one of ordinary skill in the art should be considered as not departing from the scope of the present invention.

Claims (7)

1. A time-delay self-closing flushing valve comprises a time-delay external member, a pressing external member, a valve core outer cover with a water inlet and a water outlet and a valve core external member arranged in the valve core outer cover, wherein a through hole is formed between the water inlet and the water outlet; the method is characterized in that: the delay external member comprises a delay valve cover, a magnet block, a delay spring and a movable iron core, wherein the magnet block is arranged in the delay valve cover from top to bottom, the delay spring is in a compressed state, the movable iron core support is arranged above the diaphragm gland in a sealing manner, a containing cavity for placing the movable iron core is formed in the movable iron core support, the upper end of the movable iron core abuts against the corresponding side wall of the containing cavity through the spring in the compressed state, the lower end of the movable iron core is connected with the diaphragm gland in a sealing manner, the lower side wall of the movable iron core support is connected with the corresponding inner side wall of the delay valve cover in a sealing manner, a delay cavity is formed between the delay valve cover and the movable iron core support, damping oil is filled in the delay cavity, the magnet block is arranged in the delay valve cover and positioned at the top of the delay cavity, the upper end of the delay spring is fixedly connected with the lower end face of the magnet block, and the lower end of the delay spring is sleeved and fixed outside the movable iron core support; press the external member and establish including button and cover button cover outside the button, the lower extreme of button stretches into in the time delay valve gap and with magnet piece looks fixed connection, the lower extreme inboard of button cover with the upper end outside sealing connection of time delay valve gap, the lateral wall of button with the corresponding inside wall sealing contact of button cover.
2. A time delay self-closing flush valve according to claim 1, wherein: the time delay intracavity still is provided with a cover and establishes the outer magnetic conduction frame of magnet piece, the below of magnetic conduction frame has an opening, move the iron core support and pass through the opening stretches into in the magnetic conduction frame, the lower extreme that moves the iron core is provided with an inverted T type post, the outer parcel of inverted T type post has and is used for sealing the iron core sealing rubber that moves of diaphragm gland.
3. A time delay self-closing flush valve according to claim 1, wherein: the utility model discloses a time delay valve gap, including time delay valve gap, button cover, outer seal ring, button cover, time delay valve gap with be provided with a leak protection rubber sleeve that prevents damping oil and leak between the button cover, leak protection rubber sleeve includes L type rubber circle, the lower extreme of L type rubber circle is provided with external seal ring and interior sealing ring, the external seal ring presss from both sides to be established button cover with between the lateral wall of time delay valve gap, interior sealing ring wears to overlap and is in outside the top of time delay valve gap, the button with button cover sliding contact's position has seted up the annular groove, the upper end of L type rubber circle is inlayed and is established in the annular groove, have in the annular groove and supply the stroke space that the upper end of L type rubber circle reciprocated, the button is in the part card below the annular groove is established in the button cover.
4. A time delay self-closing flush valve according to claim 1, wherein: a water inlet channel is formed in the valve core main body and is communicated with the water inlet, the water stopping rubber pad is clamped at the lower end of the valve core main body, the rubber diaphragm is clamped at the upper end of the valve core main body and is hermetically connected with the lower surface of the diaphragm gland, a water pressure balance cavity is formed between the rubber diaphragm and the diaphragm gland, the water outlet end of the water inlet channel is communicated with the water pressure balance cavity, and a first limiting step clamped with the lower end of the diaphragm gland is arranged in the valve core outer cover; the diaphragm gland is internally provided with a flow guide hole communicated with the water pressure balance cavity, the flow guide hole is positioned in the joint of the diaphragm gland and the movable iron core support, the diaphragm gland is internally provided with a pressure relief hole isolated from the flow guide hole, the diaphragm gland is internally provided with a pressure relief water flow channel along the radial direction, the water inlet of the pressure relief water flow channel is communicated with the pressure relief hole, and the water outlet of the pressure relief water flow channel is arranged on the side edge of the diaphragm gland.
5. A time delay self-closing flush valve according to claim 1, wherein: the rubber diaphragm is a straight line type rubber diaphragm or an L type rubber diaphragm or a U type rubber diaphragm, the shaft sleeve is provided with a diaphragm lantern ring on the upper portion of the shaft sleeve and a valve core lantern ring on the lower portion of the shaft sleeve, the diaphragm lantern ring and the valve core lantern ring are integrally formed, the diaphragm lantern ring is sleeved on the outer portion of the rubber diaphragm and attached to the outer side wall of the rubber diaphragm, the upper end face of the shaft sleeve is connected with the lower edge of the rubber diaphragm in a sealing mode, the valve core lantern ring is sleeved on the outer portion of the valve core main body, and a second limiting step used for being clamped on the lower end face of the diaphragm lantern ring is arranged in the valve core outer cover.
6. A time delay self-closing flush valve as claimed in claim 1, wherein: the lower part of the valve core main body is provided with a convex column, a concave part is arranged between the convex column and the side wall of the valve core main body, the water stopping rubber pad is arranged in the concave part, the water stopping rubber pad is in sealing contact with the upper end surface of the through hole, the upper part of the valve core main body is provided with an annular groove, and the rubber diaphragm is clamped in the annular groove; and a self-cleaning needle for preventing the water inlet channel from being blocked is arranged in the water inlet channel, and the top end of the self-cleaning needle is movably fixed on the diaphragm press cover.
7. A time delay self-closing flush valve according to claim 1, wherein: the button sleeve is connected with the delay valve cover in a buckling mode, the delay valve cover is connected with the valve core outer cover in a buckling mode, and a gap is reserved between the delay valve cover and the valve core outer cover.
CN201710160520.2A 2017-03-17 2017-03-17 Time-delay self-closing flushing valve Active CN106678427B (en)

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CN109965665B (en) * 2017-12-27 2022-03-04 佛山市顺德区美的电热电器制造有限公司 Cooking utensil
JP7027550B2 (en) 2017-12-27 2022-03-01 佛山市▲順▼▲徳▼区美的▲電▼▲熱▼▲電▼器制造有限公司 kitchenware
CN108953740B (en) * 2018-08-08 2024-04-12 厦门坤锦电子科技有限公司 Electromagnetic valve

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CN101446357A (en) * 2008-09-11 2009-06-03 朱振连 Electromagnetic pilot-operated diaphragm valve
CN202834271U (en) * 2012-11-01 2013-03-27 黄石市海成节能科技开发有限公司 Delay self-closing flush valve
CN203297708U (en) * 2013-06-09 2013-11-20 福建汇才实业发展有限公司 Bottom-in bottom-out magnetic type delayed flush valve element
CN103696470B (en) * 2013-11-05 2014-10-08 黄石兴阀科技有限公司 Three-cavity self-closing time-delay flushing valve core
CN105042109B (en) * 2015-09-09 2017-06-27 泉州市纵能电磁阀有限公司 A kind of waterway controlling valve structure
CN206582381U (en) * 2017-03-17 2017-10-24 泉州市纵能电磁阀有限公司 A kind of Delayed self-closing flushing valve

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