CN201078495Y

CN201078495Y - Automatic anti-drip safety valve

Info

Publication number: CN201078495Y
Application number: CNU2007201833361U
Authority: CN
Inventors: 王锁; 王贵
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-22
Filing date: 2007-09-22
Publication date: 2008-06-25
Anticipated expiration: 2017-09-22

Abstract

The utility model relates to an automatic anti-dripping safety valve, which comprises a valve seat member, a valve guiding and supporting member, a valve core, a valve base and an anti-magnetic bushing, and is characterized in that: the valve seat member water inlet is in the rounded involute form, a ring of receding boss is arranged along the periphery after the transition section of the eater inlet in the valve seat member, a piece of water-seal rubber us arranged after the receding boss and wedge grooves are positioned on the inner walls of the valve seat member; the valve guiding and supporting member is composed of a head cylindrical structure, a straight section rib structure and an arc section rib structure, and a wedge boss is arranged on the valve guiding and supporting member; the permanent magnet is positioned on the valve base, the external walls of the valve base are connected with the rib structure and the valve guiding and supporting member is sleeved in the valve seat member; the valve core comprises a valve cap, a spring and a valve core shaft, and an armature iron is fixed at the end of the valve core shaft. The utility model has the advantages: 1. have the action of magnetic water; 2. prevent the vacuum air admission of the faucet from absorbing other dangerous substances (liquid); 3. can prevent back rotation of the water meter; 4. prevent water loss in low discharge and improve the measuring accuracy of the water meter; 5. can act as flow stabilization; and 6. can prevent backward flow of liquid.

Description

Automatic leakage-proof safety valve

Technical field

The utility model relates to a kind of automatic leakage-proof safety valve, belongs to safety check.

Background technique

China is a country that water resources is very deficient, but in the water system of city tap-water, has the 20% above water yield to can not get metering, in the water system of direct drinking, has the 30% above water yield to can not get metering.Its reason is: widely used B level DN20 measure water-meter in present China tap water supply system, and the initiating flow is 10L/h, the one day 24 hours 240L that just run off, 1 day water of enough people; Widely used 8mm C level, D level measure water-meter in the direct drinking water system, the initiating flow is 2L/h and 1L/h.When user's water tap leakage or have a mind to regulate open degree, flow is during less than the initiating flow of measure water-meter, and the water by water meter can't obtain metering or few metering, causes the waste of water resources.In addition, when cutting off the water, negative pressure can occur in the pipeline, if at this moment fetch boiling water tap, water meter reversing can occur and suck air, then may have influence on water quality and water supply security in the pipe.Therefore, prevent that small flow or drip are very necessary for the conserve water resource.

Summary of the invention

The purpose of this utility model provides the automatic leakage-proof safety valve that the generation that can effectively control small flow or drip before or after a kind of measure water-meter of the resident's of being assemblied in water system or other rings follow the non-return in the liquid system.

The purpose of this utility model realizes in the following manner:

The utility model comprises valve block member, valve body guided bearing member, spool, valve base, anti-magnetic disturbance sleeve, it is characterized in that: the valve block member is whole to be tubular shape, its water intake be have a fillet gradually open shape, on the outer wall of valve base member, have circumferential groove, seal ring is housed in the groove; Be provided with a circle along circumference behind the water intake transition section in the valve block member and move back platform, place watertight rubber after moving back platform, on the circumference of the same cross section on the inwall of valve block member, be provided with wedge slot; Valve body supporting guide member is made up of head cylindrical structure, straight section rib-shaped structure and segmental arc rib-shaped structure, supports the wedge shape projection of the corresponding coupling of wedge slot on the inwall that is provided with on the circumference of the same cross section on the outer wall of guide member head with the valve block member at valve body; Valve base is the middle double-walled cylindrical structural member that has axis hole, one side is the cylinder spring seat, opposite side is provided with the permanent magnet fixed base of vertical axial, in the permanent magnet fixed base, be provided with permanent magnet, the external diameter of valve base is less than the internal diameter of valve block member, its outer wall cylinder is connected with rib-shaped structure, and valve body supporting guide member is sleeved in the valve block member; Spool is made up of bonnet, spring, poppet shaft, bonnet is that front end is the circular cap body of taper, the front end of poppet shaft passes with bonnet from the axis hole of valve base and is connected, spring housing is on the poppet shaft and be against on the spring seat of valve base, tail end in poppet shaft is fixed with armature, armature is corresponding with the permanent magnet on being located at valve base, and spool is contained in the valve body supporting guide member; Anti-magnetic disturbance sleeve is one section pipe, and anti-magnetic disturbance sleeve is installed in the afterbody of valve block member, and permanent magnet and armature are covered on wherein.

The utility model has the advantages that: 1, have the magnetized water effect; 2, prevent to suck other hazardous substances (liquid) from the water tap negative pressure inlet; 3, can prevent the water meter reversing; 4, anti-sealing small flow loss water resources, raising water meter measurement precision; 5, can play the stationary flow effect; 6, can prevent that liquid from flowing backwards.

Description of drawings

Fig. 1 is that structure of the present utility model and the spool that is installed in the water pipe are in the closed state schematic representation;

Fig. 2 is that structure of the present utility model and the spool that is installed in the water pipe are in the opening state schematic representation;

Fig. 3 is the schematic representation of valve body supporting guide member;

Fig. 4 is that the A-A of Fig. 3 is to sectional view;

Fig. 5 is that the B-B of Fig. 3 is to sectional view.

Among the figure: 1-water pipe, 2--seal ring, 3--watertight rubber, 4--wedge shape projection, 5--valve body guided bearing member, 6--poppet shaft, 7--keeps off head, 8--valve block member, 9--filter screen, the 10--bonnet, 11--spring, 12--valve base, the 13--permanent magnet, 14--armature, 15--prevents the magnetic disturbance sleeve, the head cylindrical structure of 16--valve body guided bearing member, F ₁--current water inlet direction, F ₂--current water outlet direction.

Embodiment

With reference to accompanying drawing, the utility model comprises valve block member 8, valve body supporting guide member 5, spool, valve base 12, anti-magnetic disturbance sleeve 15, valve block member 8 integral body are tubular shape, its water intake be have a fillet gradually open shape, filter screen 9 is housed in the water intake of valve block member 8, on the outer wall of valve block member 8, has circumferential groove, seal ring 2 is housed in the groove, be provided with a circle along circumference behind the water intake transition section in the valve block member and move back platform, move back and place watertight rubber 3 behind the platform; On the circumference of the same cross section on the inwall of valve block member 8, be provided with wedge slot, the corresponding wedge shape projection 4 of wedge slot on the inwall that is provided with on the circumference of the same cross section on the outer wall of valve body supporting guide member 5 with the valve block member; Watertight rubber compresses by the urgent method in wedge slot wedging back on projection 4 of the wedge shape on the cylinder and the valve block member inwall circumference after moving back platform; Valve body supporting guide member 5 is that afterbody is the rib shape member of arc, spool is made of bonnet 10, helical spring 11, poppet shaft 6, valve base 12 has the circle of axis hole for the center, the one side is provided with spring seat, opposite side is provided with the permanent magnet fixed base, in the permanent magnet fixed base, be provided with permanent magnet 13, influence water quality, it is cast in the permanent magnet fixed base with plastics in order to make permanent magnet 13 non-corrosives.Bonnet 10 is that front end is the circular cap body of taper, the front end of poppet shaft 6 passes from the axis hole of valve base 12 with bonnet 10 and is connected, helical spring 11 is enclosed within on the poppet shaft 6 and is against on the spring seat of valve base 12, tail end in poppet shaft 6 is fixed with armature 14, armature 14 is corresponding with the permanent magnet 13 on being located at valve base 12, the afterbody of poppet shaft 6 be shaped on retaining 7 with armature 14 retainings on poppet shaft; Spool is contained in the valve body supporting guide member 5, and its valve base 12 is fixed with the afterbody of valve body supporting guide member 5, and valve body supporting guide member 5 is sleeved in the valve block member 8, and its wedge shape projection 4 is stuck in the wedge slot of valve block member 8; Anti-magnetic disturbance sleeve 15 is one section pipe of being made by stainless iron, and anti-magnetic disturbance sleeve 15 is installed in the afterbody of valve block member 8, and permanent magnet 13 and armature 14 are covered on wherein.

The utility model is installed in the water inlet connecting tube 1 of water meter or in the water meter outer pipe 1, and the jam-packed rubber seal.Its working principle is: when the fluctuation pressure in the pipe network is enough big, and greater than behind the valve during fluid pressure, bonnet and poppet shaft can overcome the attraction force of helical spring elastic force and magnet and armature under the fluctuation pressure effect, move after making bonnet and poppet shaft Parallel to the flow direction, the attraction force of magnet and armature weakens, fluctuation pressure in the water supply network and spring are compressed and the elastic force that produces reaches balance, and liquid is by flowing out valve body between valve body supporting guide member rib and the rib.When the flow that flows out valve body hour, fluctuation pressure in the pipe network just is less than or equal to downstream pressure, bonnet and poppet shaft move forward in helical spring elastic force effect subinverse water (flow) direction, spring force discharges, magnet and armature distance reduce, attraction force strengthens, after watertight rubber in bonnet and the valve block member supports and closes with valve closing, simultaneously since magnet and armature the suction-combining force and distance be inversely proportional to, more increase the seal of valve, thereby prevented the generation of small flow, drip and the refluence of suck-back G﹠W stream of pipe network.

Claims

1. automatic leakage-proof safety valve, comprise valve block member, valve body guided bearing member, spool, valve base, anti-magnetic disturbance sleeve, it is characterized in that: the valve block member is whole to be tubular shape, its water intake be have a fillet gradually open shape, on the outer wall of valve base member, have circumferential groove, seal ring is housed in the groove; Be provided with a circle along circumference behind the water intake transition section in the valve block member and move back platform, place watertight rubber after moving back platform, on the circumference of the same cross section on the inwall of valve block member, be provided with wedge slot; Valve body supporting guide member is made up of head cylindrical structure, straight section rib-shaped structure and segmental arc rib-shaped structure, supports the wedge shape projection of the corresponding coupling of wedge slot on the inwall that is provided with on the circumference of the same cross section on the outer wall of guide member head with the valve block member at valve body; Valve base is the middle double-walled cylindrical structural member that has axis hole, one side is the cylinder spring seat, opposite side is provided with the permanent magnet fixed base of vertical axial, in the permanent magnet fixed base, be provided with permanent magnet, the external diameter of valve base is less than the internal diameter of valve block member, its outer wall cylinder is connected with rib-shaped structure, and valve body supporting guide member is sleeved in the valve block member; Spool is made up of bonnet, spring, poppet shaft, bonnet is that front end is the circular cap body of taper, the front end of poppet shaft passes with bonnet from the axis hole of valve base and is connected, spring housing is on the poppet shaft and be against on the spring seat of valve base, tail end in poppet shaft is fixed with armature, armature is corresponding with the permanent magnet on being located at valve base, and spool is contained in the valve body supporting guide member; Anti-magnetic disturbance sleeve is one section pipe, and anti-magnetic disturbance sleeve is installed in the afterbody of valve block member, and permanent magnet and armature are covered on wherein.