CN2198318Y - Self-closing water saving and flushing valve - Google Patents

Abstract

The utility model relates to a self-closing water-saving flushing valve, which is the improved model of an undrawing type straightway flushing valve. Besides the utility model has the advantages that the self-closing time can be adjusted, a damping hole can be automatically unplugged, the noise of a water hammer does not exist, etc., the purposes that if the water supply pressure is higher, the sealing performance is better, and a valve port is not easily clogged by impurities, and the leakage of jetting water of an antifouling device can not occur by the adopting the structures of the inversion of the inlet and the outlet of the valve body of an ordinary cold water stop valve, a main valve, and the antifouling device. The utility model is a self-closing water-saving flushing valve having the advantages of simple structure, convenient operation, and reliable performance.

Description

Self-closing water saving and flushing valve

The utility model relates to the self-closing water-saving flush valve in the sanitary fittingss such as a kind of flush toilet that is applicable to washrooms such as hotel, residential houses, dormitory, latrine pit, urinal.

Though the straight-through flushing valve of existing pull type has the adjustable self-closing time, dredges damping hole automatically, advantages such as no water hammer noise cause to leak and supply water to press the shortcoming of the by-pass prot of antifouling device to the water spray that leaks outside take place when high but poorly sealed, impurity jam in use also occurs.

For this reason, the purpose of this utility model is: for overcoming the above-mentioned defective of straight flushing valve, the measure that be inverted by adopting common cold water stop valve valve body to import and export, primary valve adds elastomeric material to centroclinal certain angle and antifouling device inner nozzle employing fixed mount, a kind of pressure of supply water is provided, and high leakproofness is good more more, and dirt proof sleeve does not leak, and impurity is difficult for the self-closing water-saving flush valve of jam on water spray and the primary valve.

Self-closing water-saving flush valve provided by the utility model mainly is made up of valve body, core assembly, handle and dirt proof sleeve.Described core assembly device and is sealed in it in inner chamber of valve body with valve gap in the inner chamber of valve body, and core assembly cooperates with primary valve in the valve body.Described dirt proof sleeve is connected with the valve body delivery port, and it is made of outer tube, fixed mount and soft nozzle, evenly is provided with radially by-pass prot on the outer tube circumferential wall, and described soft nozzle is fixed on outer tube wall, also is provided with radial direction through hole on the described fixed mount circumferential wall.

The utility model compared with prior art removes and to have the adjustable self-closing time, dredges automatically outside the advantages such as damping hole, no water hammer noise, and it is high and difficult by the impurity jam also to have the primary valve sealing, antifouling device advantage such as do not spray water.And this valve arrangement is simple, easy to use, dependable performance.

Fig. 1 is the main sectional view of self-closing water-saving flush valve of the present utility model.

Below in conjunction with accompanying drawing, the utility model specific embodiment is described in further detail.

With reference to Fig. 1, the self-closing water-saving flush valve that the utility model proposed, it is made up of valve body 1, valve gap 2, sleeve 3, valve rod 4, handle 5, adjusting bolt 6, spring 7, piston 8, spool 9, anti-blocking pin 10, outer tube 11, fixed mount 12, soft nozzle 13 etc.In the valve gap 2 that studs with sleeve 3, at first assemble other the whole parts except that outer tube 11, fixed mount 12, soft nozzle 13, once pack into the middle part of valve body 1, and the delivery port of this valve body is equipped with outer tube 11, fixed mount 12, soft nozzle 13, and its middle external tube 11, fixed mount 12 and soft nozzle 13 constitute dirt proof sleeve.

Described spool 9, piston 8, valve rod 4 and spring 7 are combined into core assembly, and this assembly is divided into intake antrum A, control chamber B and drain chamber C with flushing valve inside.Wherein said spool 9 is contained in piston 8 endoporus, and piston 8 top kinks valve rod 4, are overlapping spring 7 on the valve rod 4, and valve rod 4 outer ends are connected with operating grip 5.Described piston 8 outside cylinder are divided into three sections, and epimere is the piston portion 14 of band O RunddichtringO, and the stage casing is that prerotation vane 15, hypomere are the main valve 16 that has rubber gasket.On prerotation vane 15, be provided with a breach (not shown).On piston portion 14, be provided with the damping hole that is communicated with intake antrum A and control chamber B, and the anti-blocking pin 10 of elasticity is housed in this damping hole, anti-blocking pin 10 top straightways exceed 4-5 millimeter in plane on the piston 8, and hypomere is the helical spring of 3 millimeters of external diameters, and hypomere is fixed on the piston 8 stage casing prerotation vanes 15.Described adjusting bolt 6 is located on the valve gap 2.

The space that sleeve 3, adjusting bolt 6 and piston 8 are surrounded is control chamber B.Valve rod 4 in this chamber, spring 9 and spool 9 common formation pilot valves.When drawing back this valve, the drain hole that the lower plane of valve rod 4 leaves spool 9 makes the water among the control chamber B drain into water chamber C.Because the external diameter of 4 times end discs of valve rod (being guide's valve) greater than the protruding arm internal diameter in piston 8 tops, so open pilot valve in the drawing process earlier, continues to drive piston 8 then main valve is opened.Piston 8 is upper and lower activity in sleeve 3.Intake antrum A and control chamber B have been separated with the O RunddichtringO.

The essential characteristic of valve body 1 is that its profile is identical with the valve body of general common cold water stop valve with connection dimension, import and export and be inverted, and its primary valve edge is to centroclinal 30 °-45 °, highly remain on about 1.2-2.2mm, so that can not on the primary valve edge of taper, cause that primary valve leaks by jam by impurity in the water of primary valve.

Because valve body 1 is imported and exported and is inverted, piston 8 closing directions are consistent with water (flow) direction, so when valve closing, its sealing force increases along with the increase of pressure of supply water, can not occur causing the phenomenon of leaking because of the hydraulic pressure height.

Because the sleeve 3 valve gap 2 in adopts the stainless steel sleeve of inwalls through correct grinding,, increased the flexibility and the application life of valve closing greatly so it and the frictional resistance of adorning the sealing ring within it the piston 8 drop to bottom line.

Owing to having adorned fixed mount 12 and soft nozzle 13 in the outer tube 11 that is contained in valve body 1 delivery port, so soft nozzle 13 enlarged and be close on fixed mount 12 inwalls, covered the through hole that communicates with the by-pass prot of outer tube 11 above it, therefore work as the water outlet pressure height and be subjected to resistance and refund the by-pass port leakage water spray of Shi Buhui from outer tube 11, one when the valve closing water outlet stops, soft nozzle 13 restores to the original state again and dwindles, the dirty gas that distribute from urinal this moment is then from crack between soft nozzle 13 and the fixed mount 12, radial direction through hole discharges, can polluted source, reach antifouling purpose.

When this valve is installed in supply line, must water inlet up, dirt proof sleeve down and valve rod forward.

When pulling handle 5, drive valve rod 4 pilot valve is opened earlier.At this moment, the hydraulic pressure among the control chamber B is reduced to atmospheric pressure rapidly through the centre bore of spool 9.Then, valve rod continuation drive piston 8 main valves are just opened.At this moment, the water among the intake antrum A flow to drain chamber C through the center of valve body 1 main valve hole, and the water among the control chamber B mixes the soft nozzle 13 of outflow also through the centre bore of spool 9 with the water of intake antrum A.When piston 8 was run into the last plane of valve gap 2, anti-blocking pin 10 was compressed, and flushed with plane on the piston 8.

When release handle 5, spring 7 is shifted valve rod 4 onto close spool 9 centre bore rapidly closes pilot valve earlier.Water among this moment intake antrum A slowly charges into control chamber B through the breach and the damping hole of piston 8 prerotation vanes 15, and piston is descended, and anti-blocking pin 10 is dredged one time damping hole by the elastic reset of itself.

When piston 8 declines, when main valve was about to close, the tapering point of spool 9 had entered main valve hole.At this moment, the throttling action of this annulus is slowly closed main valve.Impact and water hammer have been prevented.

Leaving handgrip from staff is the time-delay closing time of flushing valve to the time that main valve is closed substantially.Its length is regulated by regulating bolt 6.When tightening this bolt, increase the tight power of giving of spring 7, thereby accelerated closing velocity, shortened the time-delay closing time.Otherwise, time expand when unscrewing.

Claims (8)

1, a kind of self-closing water-saving flush valve, it is characterized in that it is made up of valve body, core assembly, handle and dirt proof sleeve, described core assembly device is in the inner chamber of valve body, and it is sealed in the inner chamber of valve body with valve gap, primary valve in core assembly and the valve body cooperates, described dirt proof sleeve is connected with the valve body delivery port, it is made of outer tube, fixed mount and soft nozzle, evenly be provided with radially by-pass prot on the outer tube circumferential wall, the described soft nozzle frame that is fixed is fixed on outer tube wall, also is provided with radial direction through hole on the described fixed mount circumferential wall.

2, flushing valve according to claim 1, it is characterized in that described core assembly is made up of spool, piston, valve rod and spring, it is divided into intake antrum with flushing valve inside, control chamber and drain chamber, wherein said spool is contained in the piston inner hole, piston top kink valve rod, is overlapping spring on the valve rod, and the valve rod outer end is connected with handle.

3, flushing valve according to claim 1 and 2 is characterized in that the outside piston post is divided into three sections, and epimere is the piston portion of band O RunddichtringO, and the stage casing is a prerotation vane, and hypomere is the main valve that has rubber gasket.

4, flushing valve according to claim 3, it is characterized in that being provided with the damping hole that is communicated with intake antrum and control chamber at the epimere of described piston, and the anti-blocking pin of elasticity is housed in damping hole, anti-blocking pin top straightway exceeds 4-5 millimeter in plane on the piston, hypomere is the helical spring of 3 millimeters of external diameters, and is fixed on the prerotation vane of piston stage casing.

5, flushing valve according to claim 1, it is characterized in that fix on the valve gap cylinder inner wall its inwall through the correct grinding stainless steel sleeve, piston epimere and this sleeve lining between be provided with an O RunddichtringO.

6, flushing valve according to claim 1 and 2 is characterized in that described piston is arranged on intake antrum one side near primary valve in the valve body.

7, flushing valve according to claim 1 is characterized in that primary valve edge in the described valve body to centroclinal 30-45 °, highly remains between the 1.2-2.2 millimeter.

8, flushing valve according to claim 1 is characterized in that also being provided with on the valve gap one and regulates bolt.

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