CN203067855U

CN203067855U - Inductive sanitary appliance flush valve

Info

Publication number: CN203067855U
Application number: CN 201220728756
Authority: CN
Inventors: 李达良; 郑少波
Original assignee: FUZHOU GIBO INDUCTION EQUIPMENT CO LTD
Current assignee: FUZHOU GIBO INDUCTION EQUIPMENT CO LTD
Priority date: 2012-12-26
Filing date: 2012-12-26
Publication date: 2013-07-17
Anticipated expiration: 2022-12-26

Abstract

The utility model provides an inductive sanitary appliance flush valve which comprises a valve body, an electromagnetic valve component, a membrane controlling unit and a piston component. A water inlet channel, a water outlet channel, a decompression cavity, a water flushing cavity and a piston valve cavity which are mutually communicated are arranged on the valve body. The decompression cavity and the water flushing cavity are respectively communicated with the water outlet channel directly. The piston component is arranged inside the piston valve cavity and divides the piston valve cavity into an upper piston valve cavity and a lower piston valve cavity, the lower cavity of the piston valve is connected with the water inlet channel, the conduction of the upper piston valve cavity and the lower piston valve cavity are achieved through three decompression procedures of the electromagnetic valve component and the membrane controlling unit, and therefore flushing is achieved. The inductive sanitary appliance flush valve has the advantages of being large in instantaneous flushing flow, good in impurity through capability, good in product reliability, compact in structure, and convenient to install.

Description

A kind of sensing sanitary appliance flushing valve

Technical field

The utility model relates to a kind of sensing sanitary appliance flushing valve.

Background technique

The induction type flushing valve refers to a kind of novel induction flushing valve, comprise body, be located at the body bottom fixed base, be located at flap on the fixed base, be located at the solenoid valve on the flap, the transmission of being located at the body front side, reception unit.Maintenance and the installation of induction installation is convenient in this induction flushing valve, and simple and compact for structure, and the titting water outlet of this induction Pedal flushing valve lower end can be reequiped ozzle for tap simultaneously, can be used as water tap and uses, and has multipurpose, can use in multiple occasion.

Generally there is following several shortcoming in the flushing clothing valve of existing sensing sanitary appliance:

1, the flushing instantaneous flow is less, and low hydraulic pressure characteristic is poor, causes rinse capability to descend, and influences effective use and the cleanliness of product.

2, electromagnetic valve coil textural association accessory is scattered, mounting type complexity, dismounting trouble in maintenance, length consuming time, lost labor's cost.

3, unreasonable structure, the impurity passing capacity is poor, causes product bug or inefficacy, when serious, also mounted product need be removed from the body of wall pipeline, changes new product.

4, switch valve die cavity metal and rubber (the metal mold cavity finished surface has tool marks) rubber rapid wear that rubs for a long time, the switch valve action has the sense of obstruction, and the die cavity requirement on machining accuracy is higher, influences processing efficient and product reliability.

The model utility content

The technical problems to be solved in the utility model is to provide a kind of sensing sanitary appliance flushing valve, and the flushing instantaneous flow is bigger, and the impurity passing capacity is good, and product reliability is good, compact structure, easy for installation.

The utility model is achieved in that a kind of sensing sanitary appliance flushing valve, it is characterized in that: comprise valve body, electromagnetic valve component, diaphragm control unit and piston assembly; Described valve body is provided with inlet channel, water outlet, pressure-releasing chamber, bath chamber and the piston valve die cavity that can be interconnected; Described pressure-releasing chamber and bath chamber directly are communicated with water outlet respectively; Described piston assembly is located in the piston valve die cavity piston valve die cavity is divided into piston valve epicoele and piston valve cavity of resorption, and the piston valve cavity of resorption directly is communicated with inlet channel, and described bath chamber is positioned at the bottom of piston valve cavity of resorption and controls conducting by this piston assembly; Described diaphragm control unit comprises heavy caliber diaphragm and diaphragm chamber seat, the diaphragm chamber seat has a diaphragm die cavity, described diaphragm chamber seat is connected on the described valve body and is positioned at the top of pressure-releasing chamber, described heavy caliber diaphragm is located in the diaphragm die cavity and the diaphragm die cavity is divided into upper diaphragm die cavity, the outer die cavity of diaphragm and die cavity in the diaphragm down down, the outer die cavity of following diaphragm is communicated with the piston valve epicoele, die cavity is communicated with described pressure-releasing chamber in the following diaphragm, and pressure-releasing chamber is communicated with water outlet; Described electromagnetic valve component comprises coil, iron core and coil base, iron core wears in coil, coil is fixed by coil base, and described coil base has a solenoid valve seat chamber, and described coil base is connected the top of diaphragm chamber seat and makes the solenoid valve seat chamber and the conducting of upper diaphragm die cavity; Described solenoid valve seat chamber is communicated with described pressure-releasing chamber by first pressure release passage, and the conducting of described solenoid valve seat chamber and first pressure release passage is controlled by described iron core.

Further, described piston assembly comprises valve gap, compression spring, piston main body, filter screen and caulking gum pad; Valve bonnet seal is in the top of piston valve die cavity, and described piston main body is positioned at the below of valve gap, and described compression spring is located between piston main body and the valve gap; The two ends up and down of described piston main body are thick portion, and the stage casing is thin portion, are tightly connected between the thick portion in upper end and the piston valve die cavity, and the piston valve die cavity is divided into described piston valve epicoele and piston valve cavity of resorption; Described filter screen set be located at the peripheral of this thin portion and and the outer wall of this thin portion between form described piston valve cavity of resorption, described inlet channel directly is communicated with described piston valve cavity of resorption by described filter screen, this piston valve cavity of resorption arrives the piston valve epicoele by a small through hole of the thick portion in piston main body upper end, described caulking gum pad is located at the bottom of the thick portion in described piston main body lower end and seals with the piston valve type cavity wall, and described piston valve cavity of resorption is separated by the sealing rubber sheet gasket with the bath chamber.

Further, be tightly connected by a U-shaped seal ring between the thick portion in described piston main body upper end and the piston valve die cavity, described U-shaped seal ring opening is embedded in the groove of the thick portion in described piston main body upper end outer rim down.

Further, also wear an adjustable lever for the vertical stroke height of regulating piston main body on the described valve gap hermetically.

Further, the bottom of described inlet channel adjacent piston valve die cavity is provided with a low inside and high outside slope.

Further, described piston valve die cavity is formed by the piston die cavity seat of a POM material molding and forming, is provided with a piston valve base corresponding to the piston valve die cavity on the described valve body, and this piston die cavity seat is nested in the described piston valve base.

Further, also be provided with a manual chamber on the described valve body, this manual control chamber is communicated with described piston valve epicoele and water outlet respectively, is provided with manual assembly in this manual control chamber to control the conducting between described piston valve epicoele and the water outlet.

Further, described manual assembly comprise hold-doun nut, hand by cavity, hand by connecting rod, Returnning spring, manually pressure-releasing chamber and seal ring; The epimere that described hand is pressed connecting rod is radially spacing by hold-doun nut, and circumferential seal is connected between epimere and the hold-doun nut, hypomere is set in hand by in the cavity by Returnning spring, and and hand by being provided with seal ring between the cavity, the sealing circle with hand by space in the cavity be divided into hand by epicoele and hand by cavity of resorption, have the water port on the top sidewall of hand by cavity, hand moves up and down in by cavity at hand by connecting rod, presses the on state that epicoele and hand are pressed cavity of resorption with the control hand; Described manual pressure-releasing chamber is located at hand by the bottom of cavity of resorption and is communicated with hand by cavity of resorption and described piston valve epicoele, and described hand is connected by sealing rubber pad with manual cavity wall by the bottom of cavity.

Further, the coil of described electromagnetic valve component is by an anistree hat type stainless iron radome and the sealing of hexagon rhombus sheet, and described iron core is embedded on this hexagon rhombus sheet movably, and this hexagon rhombus sheet is fixed on the coil base by the diplopore means of fixation.

The utlity model has following advantage:

1, adopted three earial drainage control: by a pressure release of iron core, pressure release this moment runner is less, make the heavy caliber diaphragm open, reach the secondary pressure release by the heavy caliber pressure relief opening, make the top instant water of piston cavity be forced to drain by water pressure, piston valve rises (three earial drainages) rapidly simultaneously, and sprue water instantaneous (looking pressure different flow difference) is gone out solenoid valve, improved the Instantaneous Flow of solenoid valve greatly, solenoid valve also can normal switch under the lower situation of hydraulic pressure;

2, effectively get rid of and strengthened the impurity ability: the bottom of inlet channel adjacent piston valve die cavity is provided with a low inside and high outside slope, the inclined-plane water inlet, the inner flow passage plane does not have any step and stops drowningly, and getting rid of because dead angle in the cavity makes impurity stop influences function of use, influences water flow etc.;

3, diaphragm control unit and coil block are designed to integrated type, and the dismounting simple and convenient is reliable and stable, and heavy caliber diaphragm, diaphragm die cavity clean thoroughly;

4, the design dismounting of piston assembly is easy, POM plastic piston die cavity seat, and frictional force reduces greatly, improves piston life, piston running reliable performance.

Description of drawings

In conjunction with the embodiments the utility model is further described with reference to the accompanying drawings.

Fig. 1 is the perspective view of the utility model sensing sanitary appliance flushing valve.

Fig. 2 is the three-dimensional decomposition texture schematic representation of the utility model sensing sanitary appliance flushing valve.

Fig. 3 is the form structure schematic representation of the utility model valve body.

Fig. 4 analyses and observe the status architecture schematic representation for one of the utility model valve body.

Fig. 5 analyses and observe the status architecture schematic representation for another of the utility model valve body.

Fig. 6 is the structural representation of the utility model electromagnetic valve component and diaphragm control unit disassembly status.

Fig. 7 and Fig. 8 are first and second time pressure release action schematic representation of the utility model sensing sanitary appliance flushing valve.

Fig. 9 and Figure 10 are the action of the pressure release for the third time schematic representation of the utility model sensing sanitary appliance flushing valve.

Figure 11 and Figure 12 are the manual pressure release action schematic representation of the utility model sensing sanitary appliance flushing valve.

Wherein, crooked dotted line represents that all each water cavity has water pressure among Fig. 7, Fig. 9, Figure 11 and Figure 12, and the zone that Fig. 8 and Figure 10 fill with strigula refers to current.

Embodiment

See also Fig. 1 to shown in Figure 12, sensing sanitary appliance flushing valve of the present utility model comprises valve body 1, electromagnetic valve component 2, diaphragm control unit 3 and piston assembly 4.

Mainly consult Fig. 3 to Fig. 5, described valve body 1 is provided with inlet channel 11, water outlet 12, pressure-releasing chamber 13, bath chamber 14 and the piston valve die cavity 15 that can be interconnected; Described pressure-releasing chamber 13 and bath chamber 14 directly are communicated with water outlet 12 respectively.The bottom of described inlet channel 11 adjacent piston valve die cavities 15 is provided with a low inside and high outside slope 112.

Mainly consult Fig. 1, Fig. 2, Fig. 9 and Figure 10, described piston assembly 4 is located in the piston valve die cavity 15 piston valve die cavity 15 is divided into piston valve epicoele 151 and piston valve cavity of resorption 152, piston valve cavity of resorption 152 directly is communicated with inlet channel 11, and described bath chamber 14 is positioned at the bottom of piston valve cavity of resorption 152 and controls conductings by this piston assembly 4.

Described piston assembly 4 comprises valve gap 41, compression spring 42, piston main body 43, filter screen 44 and caulking gum pad 46; Valve gap 41 is sealed in the top of piston valve die cavity 15, and described piston main body 43 is positioned at the below of valve gap 41, and described compression spring 42 is located between piston main body 43 and the valve gap 41; The two ends up and down of described piston main body 43 are thick portion, be respectively the thick portion 431 in upper end and the thick portion 432 in lower end, the stage casing is thin portion 433, wherein, be tightly connected between the thick portion 431 in upper end and the piston valve die cavity 15, piston valve die cavity 15 is divided into described piston valve epicoele 151 and piston valve cavity of resorption 152; Described filter screen 44 be set in the peripheral of this thin portion 433 and and the outer wall of this thin portion 433 between form described piston valve cavity of resorption 152, described inlet channel 11 directly is communicated with described piston valve cavity of resorption 152 by described filter screen 44, this piston valve cavity of resorption 152 arrives piston valve epicoele 151 by a small through hole 434 of the thick portion 431 in a piston main body 43 upper ends, to give 151 moisturizings of piston valve epicoele at the valve closing state, described caulking gum pad 46 be located at the thick portion 432 in described piston main body 43 lower ends the bottom and with piston valve die cavity 15 inner wall sealings, described piston valve cavity of resorption 152 is separated by sealing rubber sheet gasket 46 with bath chamber 14.Be connected by a U-shaped seal ring sealing 45 between the thick portion 431 in described piston main body 43 upper ends and the piston valve die cavity 15, described U-shaped seal ring 45 openings are embedded in a groove interior 434 of the thick portion in described piston main body 43 upper ends 431 outer rims down, use the advantage of U-shaped seal ring 45 to be, during valve open, piston assembly 4 rises, U-shaped seal ring opening in the raw, itself and piston valve die cavity 15 frictional force are less, otherwise during valve closing, piston assembly 4 descends, U-shaped seal ring opening opens, and makes sealing effect better.Also wear an adjustable lever 48 for regulating piston main body 43 vertical stroke heights on the described valve gap 41 hermetically, in order to the stroke up and down of regulating piston main body 43, thus the amount of flush water of regulating flashing valve.

Described piston valve die cavity 15 is formed by the piston die cavity seat 49 of a POM material molding and forming, be provided with a piston valve base 16 corresponding to piston valve die cavity 15 on the described valve body 1, this piston die cavity seat 49 is nested in the described piston valve base 16, and does not move relative to described piston valve base 16 in use.

Mainly consult Fig. 1, Fig. 2, Fig. 7 and Fig. 8, described diaphragm control unit 3 comprises heavy caliber diaphragm 31 and diaphragm chamber seat 32, diaphragm chamber seat 32 has a diaphragm die cavity 33, described diaphragm chamber seat 32 is connected on the described valve body 1 and is positioned at the top of pressure-releasing chamber 13, described heavy caliber diaphragm 31 is located in the diaphragm die cavity 33 diaphragm die cavity 33 is divided into upper diaphragm die cavity 331, die cavity 333 in the outer die cavity 332 of following diaphragm and the following diaphragm, upper diaphragm die cavity 331 is communicated with by an aperture 34 with the outer die cavity 332 of following diaphragm again, the outer die cavity 332 of following diaphragm is communicated with piston valve epicoele 151, the outer die cavity 332 of following diaphragm specifically is to be communicated with piston valve epicoele 151 by coil pressure release die cavity 18, die cavity 333 is communicated with described pressure-releasing chamber 13 in the following diaphragm, and pressure-releasing chamber 13 is communicated with water outlet 12.

Described electromagnetic valve component 2 comprises coil 21, iron core 22 and coil base 23, iron core 22 is located in the coil 21, coil 21 is fixing by coil base 23, described coil base 23 has a solenoid valve seat chamber 24, and described coil base 23 is connected the top of diaphragm chamber seat 33 and makes solenoid

valve seat chamber

24 and 331 conductings of upper diaphragm die cavity; Described solenoid valve seat chamber 24 is communicated with described pressure-releasing chamber by first pressure release passage 25, this first pressure release passage 25 runs through described coil base 23 and diaphragm chamber seat 33 through pressure-releasing chambers 13, and the conducting of described solenoid valve seat chamber 24 and first pressure release passage 25 is by described iron core 22 controls.Further, the coil 21 of described electromagnetic valve component 2 is by an anistree hat type

stainless iron radome

26 and 27 sealings of hexagon rhombus sheet, described iron core 22 is embedded on this hexagon rhombus sheet 27 movably, and this hexagon rhombus sheet 27 is fixed on the coil base 23 by the diplopore means of fixation.

Mainly consult Fig. 3 to Fig. 5, Figure 11 and shown in Figure 12, also be provided with a manual chamber 17 on the described valve body, this manual control chamber 17 is communicated with described piston valve epicoele 151 and water outlet 12 respectively, is provided with manual assembly 5 in this manual control chamber 17 to control the conducting between described piston valve epicoele 151 and the water outlet 12.

Described manual assembly 5 comprise hold-doun nut 51, hand by cavity 52, hand by connecting rod 53, Returnning spring 54, manually pressure-releasing chamber 55 and seal ring 56; The epimere that described hand is pressed connecting rod 53 is radially spacing by hold-doun nut 51, and circumferential seal is connected between epimere and the hold-doun nut 51, hypomere is set in hand by in the cavity 52 by Returnning spring 54, and and hand by being provided with seal ring 56 between the cavity 52, sealing circle 56 with hand by spaces in the cavity 52 be divided into hand by epicoele 521 and hand by cavity of resorption 522, have water port 57 on the top sidewall of hand by cavity 52, hand moves up and down in by cavity 52 at hand by connecting rod 53, press the on state that epicoele 521 and hand are pressed cavity of resorption 522 with the control hand; Described manual pressure-releasing chamber 55 is located at hand by the bottom of cavity of resorption 522 and is communicated with hand by cavity of resorption 522 and described piston valve epicoele 151, and the bottom that described hand is pressed cavity 52 is connected by sealing rubber pad 57 with manual chamber 17 inwalls.

Mainly consult Fig. 7 to shown in Figure 12, working principle of the present utility model is as follows:

1, pressure release for the first time: when the flushing valve closed condition, as Fig. 7, shown in Figure 9, circuit applies negative impulse for electromagnetic valve component 2, iron core 22 discharges, withstand first pressure release passage 25 in solenoid valve seat chamber 24, make solenoid valve seat chamber 24 and the 25 not conductings of first pressure release passage, all runners of flushing valve all are in a kind of pressure balance, thereby make flushing valve close not water outlet; When just opening flushing valve, as shown in Figure 8, circuit applies positive pulse for electromagnetic valve component 2, iron core 22 adhesives retreat, solenoid

valve seat chamber

24 and 25 conductings of first pressure release passage, make the water in the solenoid valve seat chamber 24 flow to pressure-releasing chamber 13 by first pressure release passage 25, thereby flow away from water outlet 12, finish pressure release for the first time.

2, pressure release for the second time: more as shown in Figure 8, because solenoid valve seat chamber 24 is communicated with upper diaphragm die cavity 331, when the water that can drive upper diaphragm die cavity 331 that flows away of the water in the solenoid valve seat chamber 24 flows away in also by solenoid valve seat chamber 24 and first pressure release passage 25, thereby the pressure of upper diaphragm die cavity 331 is diminished, the lifting that makes progress of heavy caliber diaphragm compression shock following moment of die cavity 333 in following diaphragm, thereby the interior die cavity 333 of diaphragm and the outer die cavity 332 of following diaphragm under the conducting, the water that makes down the outer die cavity 332 of diaphragm die cavity 333 in diaphragm down flow to pressure-releasing chamber 13, also flow away from water outlet 12, finish pressure release for the second time.

3, pressure release for the third time: as shown in figure 10, because the outer die cavity 332 of diaphragm is communicated with piston valve epicoele 151 down, when the water of die cavity 332 flows away outside following diaphragm, water on the plug valve epicoele 151 can be supplemented to down the outer die cavity 332 of diaphragm, thereby die cavity 333 flow to pressure-releasing chamber 13 in the diaphragm from descending, finally flow away from water outlet 12, because heavy caliber diaphragm 31 bores are big, sluicing runner unit area is big, the instant water of plug valve epicoele 151 is forced to drain by water pressure, also successively through the outer die cavity 332 of following diaphragm, die cavity 333 in the following diaphragm, pressure-releasing chamber 13 flows away from water outlet 12 at last, finishes pressure release for the third time.

4, bath: more as shown in figure 10, can make piston assembly 4 whole come-ups in the time of the draining of the water of plug valve epicoele 151, caulking gum pad 46 loses sealing, thereby the described piston valve cavity of resorption 152 of conducting and bath chamber 14, because described inlet channel 11 directly is communicated with described piston valve cavity of resorption 152 by described filter screen 44, therefore inlet channel 11 and also moment conducting of water outlet, water instantaneous (looking pressure different flow difference) is gone out solenoid valve and is finished bath.

5, manually pressure release: when electromagnetic valve component 2 dead electricity or damage ring, need with manual pressure release bath, as shown in figure 11, be manual assembly 5 closed conditions, at this moment, under the effect of Returnning spring 54, hand is in the top state by connecting rod 53, hand is pressed seal ring 56 and hand on the connecting rod 53 and press cavity 52 and form and seal, make hand by epicoele 521 and hand by cavity of resorption 522 not conductings; When pressing connecting rod 53 by the assistant, seal ring 56 moves down by connecting rod 53 conveniently and loses sealing, hand is on state by epicoele 521 and hand by cavity of resorption 522, thereby make the water of piston valve epicoele 151 flow to hand by cavity 52 outer walls by cavity of resorption 522, hand by epicoele 521, water port 57 via manual pressure-releasing chamber 55, hand successively, arrive pressure-releasing chamber 13, finish pressure release, can realize bath after the pressure release.

Though more than described embodiment of the present utility model; but being familiar with those skilled in the art is to be understood that; our described specific embodiment is illustrative; rather than for the restriction to scope of the present utility model; those of ordinary skill in the art are in modification and the variation of the equivalence of doing according to spirit of the present utility model, all should be encompassed in the scope that claim of the present utility model protects.

Claims

1. sensing sanitary appliance flushing valve is characterized in that: comprise valve body, electromagnetic valve component, diaphragm control unit and piston assembly; Described valve body is provided with inlet channel, water outlet, pressure-releasing chamber, bath chamber and the piston valve die cavity that can be interconnected; Described pressure-releasing chamber and bath chamber directly are communicated with water outlet respectively;

Described piston assembly is located in the piston valve die cavity piston valve die cavity is divided into piston valve epicoele and piston valve cavity of resorption, and the piston valve cavity of resorption directly is communicated with inlet channel, and described bath chamber is positioned at the bottom of piston valve cavity of resorption and controls conducting by this piston assembly;

Described diaphragm control unit comprises heavy caliber diaphragm and diaphragm chamber seat, the diaphragm chamber seat has a diaphragm die cavity, described diaphragm chamber seat is connected on the described valve body and is positioned at the top of pressure-releasing chamber, described heavy caliber diaphragm is located in the diaphragm die cavity and the diaphragm die cavity is divided into upper diaphragm die cavity, the outer die cavity of diaphragm and die cavity in the diaphragm down down, the outer die cavity of following diaphragm is communicated with the piston valve epicoele, die cavity is communicated with described pressure-releasing chamber in the following diaphragm, and pressure-releasing chamber is communicated with water outlet;

Described electromagnetic valve component comprises coil, iron core and coil base, iron core wears in coil, coil is fixed by coil base, and described coil base has a solenoid valve seat chamber, and described coil base is connected the top of diaphragm chamber seat and makes the solenoid valve seat chamber and the conducting of upper diaphragm die cavity; Described solenoid valve seat chamber is communicated with described pressure-releasing chamber by first pressure release passage, and the conducting of described solenoid valve seat chamber and first pressure release passage is controlled by described iron core.

2. a kind of sensing sanitary appliance flushing valve according to claim 1 is characterized in that: described piston assembly comprises valve gap, compression spring, piston main body, filter screen and caulking gum pad; Valve bonnet seal is in the top of piston valve die cavity, and described piston main body is positioned at the below of valve gap, and described compression spring is located between piston main body and the valve gap; The two ends up and down of described piston main body are thick portion, and the stage casing is thin portion, are tightly connected between the thick portion in upper end and the piston valve die cavity, and the piston valve die cavity is divided into described piston valve epicoele and piston valve cavity of resorption; Described filter screen set be located at the peripheral of this thin portion and and the outer wall of this thin portion between form described piston valve cavity of resorption, described inlet channel directly is communicated with described piston valve cavity of resorption by described filter screen, this piston valve cavity of resorption arrives the piston valve epicoele by a small through hole of the thick portion in piston main body upper end, described caulking gum pad is located at the bottom of the thick portion in described piston main body lower end and seals with the piston valve type cavity wall, and described piston valve cavity of resorption is separated by the sealing rubber sheet gasket with the bath chamber.

3. a kind of sensing sanitary appliance flushing valve according to claim 2, it is characterized in that: be tightly connected by a U-shaped seal ring between the thick portion in described piston main body upper end and the piston valve die cavity, described U-shaped seal ring opening is embedded in the groove of the thick portion in described piston main body upper end outer rim down.

4. a kind of sensing sanitary appliance flushing valve according to claim 2 is characterized in that: also wear an adjustable lever for the vertical stroke height of regulating piston main body on the described valve gap hermetically.

5. a kind of sensing sanitary appliance flushing valve according to claim 1 is characterized in that: the bottom of described inlet channel adjacent piston valve die cavity is provided with a low inside and high outside slope.

6. a kind of sensing sanitary appliance flushing valve according to claim 1, it is characterized in that: described piston valve die cavity is formed by the piston die cavity seat of a POM material molding and forming, be provided with a piston valve base corresponding to the piston valve die cavity on the described valve body, this piston die cavity seat is nested in the described piston valve base.

7. a kind of sensing sanitary appliance flushing valve according to claim 1, it is characterized in that: also be provided with a manual chamber on the described valve body, this manual control chamber is communicated with described piston valve epicoele and water outlet respectively, is provided with manual assembly in this manual control chamber to control the conducting between described piston valve epicoele and the water outlet.

8. a kind of sensing sanitary appliance flushing valve according to claim 7 is characterized in that: described manual assembly comprise hold-doun nut, hand by cavity, hand by connecting rod, Returnning spring, manually pressure-releasing chamber and seal ring; The epimere that described hand is pressed connecting rod is radially spacing by hold-doun nut, and circumferential seal is connected between epimere and the hold-doun nut, hypomere is set in hand by in the cavity by Returnning spring, and and hand by being provided with seal ring between the cavity, the sealing circle with hand by space in the cavity be divided into hand by epicoele and hand by cavity of resorption, have the water port on the top sidewall of hand by cavity, hand moves up and down in by cavity at hand by connecting rod, presses the on state that epicoele and hand are pressed cavity of resorption with the control hand; Described manual pressure-releasing chamber is located at hand by the bottom of cavity of resorption and is communicated with hand by cavity of resorption and described piston valve epicoele, and described hand is connected by sealing rubber pad with manual cavity wall by the bottom of cavity.

9. a kind of sensing sanitary appliance flushing valve according to claim 1, it is characterized in that: the coil of described electromagnetic valve component is by an anistree hat type stainless iron radome and the sealing of hexagon rhombus sheet, described iron core is embedded on this hexagon rhombus sheet movably, and this hexagon rhombus sheet is fixed on the coil base by the diplopore means of fixation.