CN2414260Y - All plastics pressure difference type water valve - Google Patents

Abstract

The utility model relates to a full-plastic pressure difference type water valve. The utility model is mainly composed of a tee valve seat, a valve core, a valve plug, a lifting handle seat, a lifting handle and a sealing ring. The valve plug is fixedly connected with an inner draw cover through a valve rod, and the inner draw cover is arranged on the lifting handle seat. The lower middle part of the lifting handle seat is provided with a sealing mechanism which is composed of the sealing ring and a protecting sheet, and the lifting handle seat and the sealing mechanism are sheathed on the valve rod. A valve opening of the valve seat and the edge of an upper opening of the valve core are respectively sheathed with an O-shaped sealing ring. The utility model has the characteristics of reasonable structure, convenient use, low manufacture cost, no rust, no corrosion, water saving, etc.

Description

Overall plastic differential water valve

The utility model relates to a kind of overall plastic making, effective three water-through valves of controlled water flow in the tap water pipe network, it both can be used as throughway valve, right angle valve form occurs, and also a kind of plastics system water nozzle that utilizes pressure reduction to open and close belongs to the valve class.

What at present, the tap water pipe network was commonly used mainly is ball valve, gate valve, spiral lifting valve and ceramic valve etc.The valve of the above-mentioned type occurs with the style of various low-medium-high levels on market, but shows that mainly mechanical easily damaged parts is more, enforceable mechanical type switching motion, and required power is bigger, and repeatable operation, and wearing and tearing easily cause water clock and waste water; In addition, because these valve classes are to use the metal manufacturing mostly, so the corrosion of connection part is also very serious, it is even more serious that corrosion and the rust that produces extremely reach " run, drip, leak ".Certainly, existing market part also occurred with the water valve of plastic production, however the spool of its keying part also nothing more than being to prolong the mechanism of having used ceramic core and spiral lifting spool, it also adopts casing plastic, inner core is the method manufacturing of Metal Ball spool.Therefore the drawback that conventional metal valve exists is present in the water valve of this class plastics manufacturing equally.

Tool is understood, the water tap of cast iron spiral lift and valve are used by relevant department's restriction, and will progressively be eliminated, reason just is that its mechanical wear is remarkable, corrosion is serious, the waste degree is excessive, the substitute is ceramic valve, and this valve mainly is to intersect to close by two smooth ceramic cores to close parallel surface and relatively rotate and open and close.Have the fan-shaped osculum that is of symmetry on the general ceramic chip, two are corresponding situation up and down, and the drive by the valve rod that connects produces 90 degree with interior rotation, when fan shaped borehole up and down at once, then reach full-gear.But the water outlet through hole of this moment only has 1/2nd sectional areas of water flowing circular hole, so the water-flowing amount of ceramic core is often not ideal enough sometimes.In addition, its valve stem part machinery action that drives the rotation of pottery sheet causes easily and moves damage, so its working life is shorter, the inferior ceramic valve of some materials particularly, its serviceability is just poorer, and quality costs an arm and a leg preferably, far higher than original cast iron water valve price, so that the user is reflected is not ideal enough.

Though ball valve carries out the operations of 90 degree scopes with handle, it is convenient to compare to spiral water valve, and its ball valve core position relative wear action obviously more easily makes the impaired and water clock of sealing surface; In addition, the mechanical wear of its handle connection part and corrosion very easily make water valve impaired and produce run, emit, phenomenon such as leakage.The main operating principle of ball valve is exactly to be connected with the stationary axle of handle with the ball valve core, by pulling axle is rotated then, thereby driving spherical spool rotates in 90 degree scopes, when the through hole of ball core is a standard-sized sheet behind the water inlet, otherwise then close, the in-core through hole expose the size that area is determining inflow, drive the lifting of brake surface or the purpose that the whereabouts reaches open and close thereby the keying of gate valve then is lifting by helix structure, the moving of its lifting position decreased or corrosion all directly causes leaking.

Water valve recited above, because each action of operation all will directly drive valve core movement, this enforceable mechanical type action uses people and feels inconvenience.

The purpose of this utility model is in order to overcome many defectives of above-mentioned existence, and a kind of overall plastic manufacturing that provides, the overall plastic differential water valve that relies on the pressure reduction of tap water pipe network to open and close.

The purpose of this utility model is finished by following technical solution; it mainly by threeway valve seat, spool, valve plug, lift-handle base, carry handle and seal ring is formed; described valve plug is connected by the Nei Lagai on valve rod on it and lift-handle base top; the sealing mechanism that O RunddichtringO and protecting sheet are formed is housed at the middle part of lift-handle base, and they are nested with in valve rod all.

The utility model is socketed with valve seat insert on the valve port edge in described valve seat, and the presser feet of the lift-handle base bottom that is connected with valve seat top is pressed on the edge of valve seat insert.

Offer the through hole at a center in the middle of the described spool, the edge of this through hole also is equipped with seal ring, and the bottom of spool is coniform and it matches with the interior valve port of valve seat.

Accompanying drawing is a structural representation of the present utility model.

To be described in detail the utility model by accompanying drawing below: on the inner chamber valve port of threeway valve seat 1, be provided with the edge that can be nested with valve seat insert 2, valve seat insert 2 just is set on the edge of valve base cavity valve port, and for anti-sealing fills up seal ring 2 tilt and leaks, compress the outer part of the top disc of seal ring 2 with the presser feet of lift-handle base 8 bottoms, and the floating plug 3 middle through holes that are provided with a center, this through hole is provided with the bead that can be nested with seal ring 4 equally, the spool bottom is coniform, its conical base has can increase the wire of sealability annulus, the last plane contact of this coil and valve seat insert 2, form linear sealing, realize the closed condition of valve; And the intermediate throughholes edge of spool 3 is equipped with valve core seal ring 4, and the axle center of sealing circle offers the through hole with the same diameter of spool inner via hole; The top of seal ring 4 be one with its valve plug that compresses mutually 5, valve plug 5 tops are valve rods, and the bottom is a valve plug head, and they are by the plastic injection-moulded one that is configured as, valve plug head can compress seal ring 4 and produce sealing effect, works as it equally and leaves the through hole of seal ring 4 and reach the effect that discharges water; Valve plug 5 top valve rods with in draw and cover 10 and be connected mutually; and valve rod passes through protecting sheet 6 and O RunddichtringO 7 and lift-handle base 8 intermediate throughholes and cover 10 and be connected with drawing in cavity is outer; at this moment; because the axle central through bore diameter of O type circle 7 is less than stem diameter; therefore; though the being property of relation of the connection part of valve rod and O type ring through hole mutual squeezing action can not leaked the position, and O type circle 7 relies on the extruding of fixing protecting sheet 6 and very smooth, is unlikely O type circle 7 torsional deformations and leaks.The outer of O type circle and the cavity wall of lift-handle base 8 push and have guaranteed the reliability of sealing; And the design of lift-handle base 8 is very good, mainly be the particularity of having considered that plastics are made, the utility model since with the middle part of lift-handle base 8 as the top of inner chamber, so the intensity of whole valve pocket is increased, and it has also avoided making the foul upper punch in the pipe to hinder valve core movement, guaranteed the unimpeded of runner, the obstruction that has reduced contingency is leaked; And the supporting bottom 11 of drawing, the top of lift-handle base, this draws has the conformability endoporus close with lift-handle base top body diameter to the centre of bottom 11, this endoporus has a relative length, the 2 feasible handles that draw of starting of its length obvious swing do not occur in the process of motion, make the people feel compactedness and the flexibility that cooperates; Draw a bottom 11 to spin mutually, guarantee the integrity of valve body with drawing a loam cake 12; Draw to draw in the bottom surface of loam cake 12 compressed and cover 10 upper plane, in draw and cover 10 bottom and compress mutually with drawing inner bottom surface again bottom 11, draw a loam cake 12 like this and draw a bottom 11 to form a fastener, make synchronous the moving up and down of energy such as the parts that draw handle, Nei Lagai, valve rod, finish switching motion; And draw spacing mainly realizing of moving by a positioning ring 9, when draw on when moving on to full-gear, draw the inner bottom surface of bottom is just offseted with positioning ring 9, draw this moment can't continue rising because of stopping of positioning ring, draw an off-position when the standard-sized sheet of realization valve; Positioning ring 9 is nested with in the groove that is provided with at cylinder place, lift-handle base 8 top, forms fixing state, plays barrier effect.And lift-handle base 8 is to spin with being connected of threeway valve seat, and seal ring 13 has been used at its position that spins, and the extruding of seal ring 13 has been reached the effect of sealing owing to two surface of contact.

Valve during use, three way valve is connected with intake pipe, when need be opened, to carry on the carrying handle, draw in the drive to cover on 10 and move, and in draw lid that valve rod is risen, valve plug also rises thereupon, chock plug has left the through hole in the middle of the spool, and static water has promptly produced and flowed in the valve pocket, and its pressure reduction makes that the tilted conical surface of spool bottom is stressed and rises, valve is opened, current directly overflow from valve port, and spool rises high more, and flow is big more.Draw the location height of handle can limit the lifting height of spool, thereby played regulating action.When closing, gently press carrying handle, make valve plug head compress spool, spool compresses valve seat insert again when lowest order, utilizes the water pressure that presses down, and has sealed valve port, has realized closing of valve.

The utility model has adopted single floating plug, and mucosal structure is succinct, reasonable, has adopted overall plastic manufacturing, does not have Rust does not have erosion, utilizes again inner pipe water pressure to open and close, and has avoided direct mechanical friction, has prevented wearing and tearing and corrosion product " run, drip, leak " difficult problem of giving birth to, easy to use, environment-friendly water-saving opens and closes rapidly, and regulation and control are used freely In extensive range, cheap for manufacturing cost, compared with prior art, have obvious advance.

Claims (3)

1, a kind of overall plastic differential water valve; it mainly by threeway valve seat, spool, valve plug, lift-handle base, carry handle and seal ring is formed; it is characterized in that described valve plug (5) is connected by the Nei Lagai (10) on valve rod on it and lift-handle base (8) top; the sealing mechanism that O RunddichtringO (7) and protecting sheet (6) are formed is housed at the middle part of lift-handle base (8), and they are nested with in valve rod all.

2, overall plastic differential water valve as claimed in claim 1, it is characterized in that being socketed with valve seat insert (2) on the valve port edge in the described valve seat (1), the presser feet of lift-handle base (8) bottom that is connected with valve seat (1) top is pressed on the edge of valve seat insert (2).

3, overall plastic differential water valve as claimed in claim 1 or 2, it is characterized in that the middle through hole that offers a center of described spool (3), the edge of this through hole also is equipped with seal ring (4), the bottom of spool (3) be coniform and it with valve seat (1) in valve port match.

Images