CN218267519U - Flushing valve with anti-freezing function - Google Patents

Abstract

The utility model discloses a flushing valve with anti-freezing function, which comprises a valve seat, a sealing component, an electromagnetic control component and an anti-freezing component, wherein a water inlet cavity and two water outlet cavities which are arranged oppositely are arranged in the valve seat, and each water outlet cavity is arranged adjacent to the water inlet cavity; the anti-freezing component is arranged in the valve seat and is adjacent to the water inlet cavity, and a first through hole for communicating the anti-freezing component with the water inlet cavity is formed between the anti-freezing component and the water inlet cavity; the anti-freezing assembly comprises a pressure relief valve core and a first spring, and when the water level in the water inlet cavity changes, the water pressure pushes the pressure relief valve core to move relative to the first through hole; the utility model discloses set up the subassembly that prevents frostbite in the valve body, made the water storage capacity ability automatically regulated of intake antrum, avoided the valve body fracture, simple structure and reliable, it is effectual to prevent frostbite.

Description

Flushing valve with anti-freezing function

Technical Field

The utility model belongs to the flushometer field, concretely relates to flushometer with frostproofing function.

Background

Flush valves are commonly used on sanitary wares, which are connected to an external water pipe during use and are used to control the flow of water into the sanitary ware. The water inlet cavity and the water outlet cavity are arranged in the common existing flushing valve, when the temperature is low in winter, water in the water inlet cavity can freeze, the volume of the frozen water is increased, the inner wall of the valve body can be extruded, and the side wall of the valve body is cracked. The pressure relief device is usually installed at the water inlet of flushometer to current flushometer, and the water pressure of water inlet department is great, can lead to the pressure relief device inefficacy after the long-time pressure impact pressure relief device to lead to valve body lateral wall fracture, unable further use. Meanwhile, the pressure relief device is in contact with water flow for a long time, the sealing performance between the pressure relief device and the valve body is poor, and pressure difference cannot be formed between a water inlet cavity and a water outlet cavity in the flushing valve, so that the flushing valve cannot be normally used. Therefore, it is desirable to design a flush valve with an anti-freeze function.

Disclosure of Invention

The utility model discloses to the problem that exists among the prior art, designed a flushometer with function of preventing frostbite, the utility model discloses set up the subassembly that prevents frostbite in the valve body, made the water storage capacity ability automatically regulated of intake antrum, avoided the valve body fracture, simple structure and reliable, it is effectual to prevent frostbite.

The invention aims to be realized by the following technical scheme: a flush valve with an anti-freezing function comprises a valve seat, a sealing assembly, an electromagnetic control assembly and an anti-freezing assembly, wherein a water inlet cavity and two oppositely arranged water outlet cavities are arranged in the valve seat, and each water outlet cavity is adjacent to the water inlet cavity; the anti-freezing component is arranged in the valve seat and is adjacent to the water inlet cavity, and a first through hole for communicating the anti-freezing component and the water inlet cavity is formed between the anti-freezing component and the water inlet cavity; the anti-freezing assembly comprises a pressure relief valve core and a first spring, and when the water level in the water inlet cavity changes, the water pressure pushes the pressure relief valve core to move relative to the first through hole.

Preferably, the anti-freeze assembly further comprises an adjustment screw and a mounting pad; the adjusting screw is in threaded connection with the valve seat, and the pressure relief valve core is arranged below the adjusting screw and coaxial with the adjusting screw; the mounting pad is arranged below the pressure relief valve core and adjacent to the first through hole, and the pressure relief valve core is sleeved on the mounting pad; the first spring is arranged between the adjusting screw and the pressure relief valve core, one end of the first spring is abutted against the adjusting screw, and the other end of the first spring is abutted against the pressure relief valve core; when the water pressure in the water inlet cavity pushes the mounting pad, the pressure relief valve core moves relative to the first through hole.

The subassembly and the intake antrum of preventing frostbite communicate each other, and the intracavity water of intaking appears freezing under low temperature environment, and the water freezes the back volume and can expand, and the intracavity water of intaking gets into the cavity that is equipped with the subassembly of preventing frostbite along first through-hole at the in-process that freezes like this, and the mounting pad receives the extrusion earlier and promotes the synchronous shift up of pressure release case this moment, and the intake antrum will communicate with the passageway that prevents frostbite so, and the pressure of intaking the intracavity will obtain the release. When the pressure relief valve core moves upwards, the accommodating space of the water inlet cavity is enlarged, and the water storage capacity of the water inlet cavity is increased.

Preferably, the end face, facing the adjusting screw, of the pressure relief valve core is provided with a columnar bulge, an installation through hole for accommodating the columnar bulge is formed in the adjusting screw, and the diameter of the installation through hole is matched with the outer diameter of the columnar bulge.

The release pressure value of the water inlet cavity can be conveniently adjusted by setting the distance between the adjusting screw and the first through hole. When adjusting screw and first through-hole's position is nearer, the elastic deformation volume of first spring is big, and the elasticity that mounting pad received is just bigger, just can push away the mounting pad when the water pressure of intracavity of intaking is great and make first through-hole be in the on-state. Similarly, when the adjusting screw is far away from the first through hole, the elastic deformation amount of the first spring is small, the smaller the elastic force applied to the mounting pad is, and the mounting pad can be pushed away to enable the first through hole to be in a conducting state when the water pressure in the water inlet cavity is small. The pressure relief valve core is provided with the columnar bulge, the adjusting screw is provided with the installation through hole, and the pressure relief valve core can only move up and down along the direction of the installation through hole.

Preferably, a first step for placing a first spring is arranged on the pressure relief valve core, a second step for placing the first spring is arranged on the adjusting screw, one end of the first spring abuts against the first step, and the other end of the first spring abuts against the second step; the first spring is coaxially arranged with the adjusting screw and the pressure relief valve core respectively.

Through setting up first step and second step, first spring just can reliably install between pressure release case and adjusting screw like this, and first spring is in compression state all the time, stably produces the effort for pressure release case.

Preferably, a sealing assembly is arranged between the water inlet cavity and each water outlet cavity and comprises a sealing element, a sealing bracket, an anti-blocking spring and a sealing cover; a transition channel is arranged at the inlet of the valve seat close to each water outlet cavity, and the transition channel and the sealing assembly are mutually surrounded to form a transition cavity for temporarily storing a water source; the edge of the sealing element is arranged on the side wall of the transition passage, the sealing cover is mutually attached to the edge of the sealing element and is detachably connected with the valve seat, and the end surface of the sealing element, which is back to the sealing cover, is abutted against the inlet of the water outlet cavity; the sealing support is provided with a first channel for limiting an anti-blocking spring, the anti-blocking spring is arranged between the sealing support and the sealing cover, the tail end of the anti-blocking spring, facing the sealing support, is provided with an extending column, and the extending column is arranged in the first channel; one end of the anti-blocking spring is abutted against the sealing bracket, and the other end of the anti-blocking spring is abutted against the sealing cover; the sealing cover is provided with a second channel and a third channel, the first channel is communicated with the second channel, the second channel is arranged between the first channel and the third channel, the third channel is communicated with an outlet of the water outlet cavity, and an electromagnetic control assembly is arranged at an inlet of the third channel.

When the electromagnetic control assembly is in a power-off state, the third channel is in a closed state, so that water flow in the water inlet cavity can enter the transition channel along the first channel, then enter the second channel along the transition channel and converge in the transition cavity, so that greater water pressure can be formed in the transition cavity, the sealing element can abut against an inlet of the water outlet cavity, and the water flow cannot enter the water outlet cavity from the water inlet cavity. When the electromagnetic control assembly is in a power-on state, the third channel is in a conducting state, water flow in the transition cavity can enter the water outlet cavity along the third channel, the water pressure in the transition cavity can be reduced, the sealing element can be far away from the inlet of the water outlet cavity, and then a large amount of water in the water inlet cavity can enter the water outlet cavity and then enter the water outlet channel along the water outlet cavity.

Preferably, a first groove for installing a sealing element is arranged on the transition passage, and the edge of the sealing element is arranged in the first groove; the sealing element, the sealing bracket and the anti-blocking spring are coaxially arranged; the sealing element is in a closed state when being mutually attached to the inlet of the water outlet cavity, and the sealing element is in an open state when being far away from the inlet of the water outlet cavity.

Through setting up first recess, conveniently install the sealing member in the transition passageway and with the entry adjacent arrangement in play water cavity. When the sealing element is mutually attached to the inlet of the water outlet cavity, water in the water inlet cavity cannot enter the water outlet cavity, and the sealing assembly is in a closed state; when the sealing element is far away from the inlet of the water outlet cavity, water in the water inlet cavity can smoothly enter the water outlet cavity, and the sealing component is in an open state.

Preferably, the sealing member can be dismantled with sealed support and be connected, be equipped with two spacing archs that are used for installing the sealing member on the sealed support, two spacing archs set up side by side from top to bottom, are close to and are equipped with the first passageway that is used for placing the extension post on the spacing arch of intake antrum entrance.

Extend the post setting in first passageway, when the water pressure in the transition chamber changes, the sealing member will promote and prevent stifled spring removal, prevent that the time delay of stifled spring removal extends the post and will remove first passageway relatively, and the impurity of aquatic just can not pile up in first passageway like this, and first passageway remains the on-state throughout.

Preferably, the electromagnetic control assembly comprises a coil plastic shell, a static iron core, a movable iron core, a second spring, a rubber core, an upper iron plate, a lower iron plate, a first gasket and a first O-shaped ring; the coil plastic shell is detachably connected with the sealing cover, the upper iron plate is arranged at the top of the coil plastic shell, and the lower iron plate is arranged between the coil plastic shell and the sealing cover and on the surface of the sealing cover; a first gasket and a first O-shaped ring are further arranged between the coil plastic shell and the sealing cover, the first gasket is arranged close to the inlet of the sealing cover, and the first O-shaped ring is arranged adjacent to the first gasket; the static iron core and the movable iron core are both arranged in the coil plastic shell, the static iron core is arranged above the movable iron core and is adjacent to the upper iron plate, a second spring is arranged between the static iron core and the movable iron core, a rubber core is arranged at the bottom of the movable iron core, and the rubber core faces a third channel; when the coil plastic shell is powered on, the movable iron core overcomes the elasticity of the second spring and is mutually attracted with the static iron core, and when the coil plastic shell is powered off, the movable iron core enables the rubber core to abut against the inlet of the third channel under the action of the elasticity of the second spring; and when the electromagnetic control assembly is powered on, the third channel is in a conducting state, and when the electromagnetic control assembly is powered off, the third channel is in a closing state.

When the coil plastic shell is electrified, the movable iron core overcomes the elastic force of the second spring and is mutually attracted with the static iron core, the rubber core is driven to be far away from the third channel when the movable iron core and the static iron core are mutually attracted, then the third channel is in a conduction state, and the second spring is in a compression state at the moment. When the coil plastic shell is powered off, the movable iron core and the static iron core cannot attract each other, so that the rubber core is abutted against the third channel under the action of the elastic force of the second spring, and the third channel is in a closed state.

Preferably, the valve seat is further provided with water outlet channels corresponding to the water outlet cavities one by one, and the water outlet channels are communicated with the water outlet cavities; the water outlet channel is provided with an anti-backflow assembly, and the anti-backflow assembly comprises a mounting seat, a movable inner core, an air inlet seat, a second gasket, a third gasket and a buckle; the mounting seat is arranged on a step on the inner wall of the water outlet channel, and the air inlet seat is arranged at the top port of the water outlet channel and is arranged on the water outlet channel through a buckle; a second gasket is arranged between the air inlet seat and the mounting seat, and the outer wall of the second gasket is mutually attached to the inner wall of the water outlet channel; an air inlet channel is arranged between the air inlet seat and each water outlet channel, each air inlet channel corresponds to each water outlet channel one by one, and a third gasket is arranged between the air inlet channel and each water outlet channel; a movable inner core is arranged between the third gasket and the mounting seat, and water flow in the water outlet cavity enters the water outlet channel to form pressure difference so that the movable inner core moves up and down relative to the mounting seat.

When the flush valve is in a use state, the water flow in the water outlet cavity can enter the water outlet channel, then the water flow in the water outlet channel can enter the sanitary ware connected with the water outlet channel, the movable inner core is moved upwards and propped against the third gasket by the water pressure generated by the water flow in the water outlet cavity, so that the air inlet channel is in a sealing state, and the water flow cannot flow out along the air inlet seat and only can enter the sanitary ware along the water outlet channel. When water flow in the water outlet cavity stops entering the water outlet channel, negative pressure can be generated in the water outlet channel, the movable inner core is far away from the third gasket under the action of gravity and can abut against the mounting seat, the air inlet channel is in a conduction state, air can enter the water outlet cavity, pressure between the water outlet channel and the water outlet cavity can be kept balanced, and sewage in the sanitary ware cannot flow back into the water outlet cavity, so that the cleanliness of the water outlet cavity is guaranteed.

Preferably, the water outlet channel and the water inlet channel are in a separated state when the movable inner core is abutted against the third gasket, and the water outlet channel and the water inlet channel are in a communicated state when the movable inner core is far away from the third gasket; and an anti-freezing channel is also arranged on the air inlet seat and is communicated with the anti-freezing component in the same way.

The anti-freezing channel and the anti-freezing component are in a mutual conduction state, so that outside air can enter the water inlet cavity along the anti-freezing channel.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses set up the subassembly that prevents frostbite above the intake antrum, prevent frostbite the subassembly and pass through first through-hole with the intake antrum and be connected, prevent frostbite the subassembly and include the pressure release case; when the water in the water inlet cavity freezes in a low-temperature environment, the freezing volume of the water is increased, the pressure relief valve core can be extruded to move upwards, the water storage capacity in the water inlet cavity can be increased, the pressure in the water inlet cavity is released, and the valve seat can be normally used and the side wall of the water inlet cavity cannot crack. Meanwhile, the sealing component is arranged between the water inlet cavity and the water outlet cavity, the water flow direction is single, the water can only flow into the water outlet cavity along the water inlet cavity, and the reverse flow cannot occur. Therefore, the utility model discloses can use under low temperature environment, have the function of preventing frostbite, general new good uses safe and reliable.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is a perspective view of another perspective of the present invention;

FIG. 3 is an internal block diagram of the freeze protection assembly;

FIG. 4 is an exploded view of the anti-freeze assembly;

FIG. 5 is an internal structure view of the present invention;

FIG. 6 is an enlarged view of a portion of the location A of FIG. 5;

FIG. 7 is an exploded view of the seal assembly;

FIG. 8 is an exploded view of the seal assembly of FIG. 7 from another perspective;

FIG. 9 is an internal structural view of the seal cap;

fig. 10 is an exploded view of the anti-reflux assembly.

The labels in the figure are: 1. a valve seat; 2. a seal assembly; 21. a seal member; 22. sealing the bracket; 23. an anti-blocking spring; 231. extending the column; 24. a sealing cover; 25. a first channel; 26. a second channel; 27. a third channel; 28. a limiting bulge; 3. an electromagnetic control assembly; 31. a coil plastic shell; 32. a stationary core; 33. a movable iron core; 34. a second spring; 35. a rubber core; 36. an upper iron plate; 37. a lower iron plate; 38. a first gasket; 39. a first O-ring; 4. an anti-freeze assembly; 41. a pressure relief valve core; 42. a first spring; 43. an adjusting screw; 44. a mounting pad; 45. columnar bulges; 46. mounting a through hole; 47. a first step; 48. a second step; 5. a water inlet cavity; 6. a water outlet cavity; 7. a first through hole; 8. a transition passage; 9. an anti-reflux assembly; 91. a mounting seat; 92. a movable inner core; 93. an air inlet seat; 94. a second gasket; 95. a third gasket; 96. buckling; 10. a first groove; 11. a water outlet channel; 12. an air intake passage; 13. and (4) an anti-freezing channel.

Detailed Description

The invention will be further described with reference to the embodiments shown in the drawings to which:

as shown in fig. 1 to 10, the embodiment discloses a flush valve with an anti-freezing function, which includes a valve seat 1, a sealing assembly 2, an electromagnetic control assembly 3 and an anti-freezing assembly 4, wherein a water inlet cavity 5 and two water outlet cavities 6 arranged oppositely are arranged in the valve seat 1, and each water outlet cavity 6 is arranged adjacent to the water inlet cavity 5; the anti-freezing component 4 is arranged in the valve seat 1 and is adjacent to the water inlet cavity 5, and a first through hole 7 for communicating the anti-freezing component 4 with the water inlet cavity 5 is formed between the anti-freezing component 4 and the water inlet cavity 5; the anti-freezing assembly 4 comprises a pressure relief valve core 41 and a first spring 42, and when the water level in the water inlet cavity 5 changes, the water pressure pushes the pressure relief valve core 41 to move relative to the first through hole 7.

The anti-freeze assembly 4 further includes an adjustment screw 43 and a mounting pad 44; the adjusting screw 43 is in threaded connection with the valve seat 1, and the pressure relief valve core 41 is arranged below the adjusting screw 43 and is coaxial with the adjusting screw; the mounting pad 44 is arranged below the pressure relief valve core 41 and adjacent to the first through hole 7, and the pressure relief valve core 41 is sleeved on the mounting pad 44; the first spring 42 is arranged between the adjusting screw 43 and the pressure relief valve core 41, one end of the first spring 42 is abutted against the adjusting screw 43, and the other end of the first spring is abutted against the pressure relief valve core 41; when the water pressure in the water inlet chamber 5 pushes the mounting pad 44, the pressure relief valve core 41 moves relative to the first through hole 7. The end face, facing the adjusting screw 43, of the pressure relief valve core 41 is provided with a columnar protrusion 45, an installation through hole 46 for accommodating the columnar protrusion 45 is formed in the adjusting screw 43, and the diameter of the installation through hole 46 is matched with the outer diameter of the columnar protrusion 45. A first step 47 for placing the first spring 42 is arranged on the pressure relief valve core 41, a second step 48 for placing the first spring 42 is arranged on the adjusting screw 43, one end of the first spring 42 abuts against the first step 47, and the other end of the first spring 42 abuts against the second step 48; the first spring 42 is provided coaxially with the adjustment screw 43 and the relief valve body 41, respectively.

A sealing assembly 2 is arranged between the water inlet cavity 5 and each water outlet cavity 6, and each sealing assembly 2 comprises a sealing element 21, a sealing bracket 22, an anti-blocking spring 23 and a sealing cover 24; a transition channel 8 is arranged at an inlet of the valve seat 1 close to each water outlet cavity 6, and the transition channel 8 and the sealing component 2 are mutually surrounded to form a transition cavity for temporarily storing a water source; the edge of the sealing element 21 is arranged on the side wall of the transition channel 8, the sealing cover 24 is mutually attached to the edge of the sealing element 21 and is detachably connected with the valve seat 1, and the end surface of the sealing element 21, which is back to the sealing cover 24, is abutted against the inlet of the water outlet cavity 6; the sealing bracket 22 is provided with a first channel 25 for limiting the anti-blocking spring 23, the anti-blocking spring 23 is arranged between the sealing bracket 22 and the sealing cover 24, the tail end of the anti-blocking spring 23 facing the sealing bracket 22 is provided with an extending column 231, and the extending column 231 is arranged in the first channel 25; one end of the anti-blocking spring 23 abuts against the sealing bracket 22, and the other end abuts against the sealing cover 24; the sealing cover 24 is provided with a second channel 26 and a third channel 27, the first channel 25 is communicated with the second channel 26, the second channel 26 is arranged between the first channel 25 and the third channel 27, the third channel 27 is communicated with an outlet of the water outlet cavity 6, and an electromagnetic control assembly 3 is arranged at an inlet of the third channel 27. A first groove 10 for installing a sealing element 21 is formed in the transition passage 8, and the edge of the sealing element 21 is arranged in the first groove 10; the sealing element 21, the sealing bracket 22 and the anti-blocking spring 23 are coaxially arranged; the sealing member 21 is in a closed state of the sealing assembly 2 when the sealing member 21 is engaged with the inlet of the water outlet chamber 6, and the sealing member 21 is in an open state of the sealing assembly 2 when the sealing member 21 is away from the inlet of the water outlet chamber 6. Sealing member 21 can be dismantled with sealing support 22 and be connected, be equipped with two spacing archs 28 that are used for installing sealing member 21 on sealing support 22, two spacing archs 28 set up side by side from top to bottom, are equipped with the first passageway 25 that is used for placing extension post 231 on the spacing archs 28 that is close to intake antrum 5 entrance.

The electromagnetic control assembly 3 comprises a coil plastic shell 31, a static iron core 32, a movable iron core 33, a second spring 34, a rubber core 35, an upper iron plate 36, a lower iron plate 37, a first gasket 38 and a first O-shaped ring 39; the coil plastic shell 31 is detachably connected with the sealing cover 24, the upper iron plate 36 is arranged at the top of the coil plastic shell 31, and the lower iron plate 37 is arranged between the coil plastic shell 31 and the sealing cover 24 and arranged on the surface of the sealing cover 24; a first gasket 38 and a first O-ring 39 are further arranged between the coil plastic shell 31 and the sealing cover 24, the first gasket 38 is arranged near the inlet of the sealing cover 24, and the first O-ring 39 is arranged adjacent to the first gasket 38; the static iron core 32 and the movable iron core 33 are both arranged in the coil plastic shell 31, the static iron core 32 is arranged above the movable iron core 33 and is adjacent to the upper iron plate 36, a second spring 34 is arranged between the static iron core 32 and the movable iron core 33, a rubber core 35 is arranged at the bottom of the movable iron core 33, and the rubber core 35 faces the third channel 27; when the coil plastic shell 31 is powered on, the movable iron core 33 overcomes the elastic force of the second spring 34 and is mutually attracted with the static iron core 32, and when the coil plastic shell 31 is powered off, the movable iron core 33 enables the rubber core 35 to abut against the inlet of the third channel 27 under the action of the elastic force of the second spring 34; when the electromagnetic control assembly 3 is powered on, the third channel 27 is in a conducting state, and when the electromagnetic control assembly 3 is powered off, the third channel 27 is in a closing state.

The valve seat 1 is also provided with water outlet channels 11 which are in one-to-one correspondence with the water outlet cavities 6, and the water outlet channels 11 are communicated with the water outlet cavities 6; an anti-backflow assembly 9 is arranged on the water outlet channel 11, and the anti-backflow assembly 9 comprises a mounting seat 91, a movable inner core 92, an air inlet seat 93, a second gasket 94, a third gasket 95 and a buckle 96; the mounting seat 91 is arranged on a step on the inner wall of the water outlet channel 11, and the air inlet seat 93 is arranged at the top port of the water outlet channel 11 and is arranged on the water outlet channel 11 through a buckle 96; a second gasket 94 is arranged between the air inlet seat 93 and the mounting seat 91, and the outer wall of the second gasket 94 is attached to the inner wall of the water outlet channel 11; an air inlet channel 12 is arranged between the air inlet seat 93 and each water outlet channel 11, each air inlet channel 12 corresponds to each water outlet channel 11 one by one, and a third gasket 95 is arranged between the air inlet channel 12 and each water outlet channel 11; a movable inner core 92 is arranged between the third gasket 95 and the mounting seat 91, and water in the water outlet cavity 6 enters the water outlet channel 11 to form a pressure difference, so that the movable inner core 92 moves up and down relative to the mounting seat 91. When the movable inner core 92 is abutted against the third gasket 95, the water outlet channel 11 and the water inlet channel are in a separated state, and when the movable inner core 92 is far away from the third gasket 95, the water outlet channel 11 and the water inlet channel are in a communicated state; and an anti-freezing channel 13 is also arranged on the air inlet seat 93, and the anti-freezing channel 13 is communicated with the anti-freezing component 4 in the same way.

The specific operation process of this embodiment is as follows, when the coil plastic housing 31 is powered on, the movable iron core 33 will overcome the elastic force of the second spring 34 and attract the stationary iron core 32, when the movable iron core 33 attracts the stationary iron core 22, the rubber core 35 will be driven to be away from the third channel 27, so the third channel 27 will be in a conducting state, and at this time the second spring 34 is in a compressed state. When the coil plastic shell 31 is powered off, the movable iron core 33 and the static iron core 32 cannot attract each other, so that the rubber core 35 abuts against the third channel 27 under the action of the elastic force of the second spring 34, and the third channel 27 is in a closed state.

In the default state, the coil housing 31 is in the power-off state, and the third channel 27 is in the closed state. The water flow in the inlet chamber 5 will enter the transition passage 8 along the first passage 25, then enter the second passage 26 along the transition passage 8 and converge in the transition chamber, so that a large water pressure is formed in the transition chamber, and the sealing member 21 will abut against the inlet of the outlet chamber 6, so that the water flow cannot enter the outlet chamber 6 from the inlet chamber 5. When the electromagnetic control assembly 3 is in the energized state, the third channel 27 is in a conducting state, so that water in the transition cavity enters the water outlet cavity 6 along the third channel 27, the water pressure in the transition cavity decreases, the sealing member 21 is far away from the inlet of the water outlet cavity 6, and a large amount of water in the water inlet cavity 5 enters the water outlet cavity 6 and then enters the water outlet channel 11 along the water outlet cavity 6.

Then the water flow in the outlet channel 11 will enter the sanitary ware connected to it, and the water pressure generated by the water flow in the outlet chamber 6 will make the movable core 92 move upwards and abut against the third gasket 95, so that the air inlet channel 12 is in a sealed state, and the water flow cannot flow out along the air inlet seat 93 and only can enter the sanitary ware along the outlet channel 11. When water flow in the water outlet cavity 6 stops entering the water outlet channel 11, negative pressure is generated in the water outlet channel 11, the movable inner core 92 is far away from the third gasket 95 under the action of gravity and can abut against the mounting seat 91, the air inlet channel 12 is in a conducting state, air can enter the water outlet cavity 6, pressure between the water outlet channel 11 and the water outlet cavity 6 can be kept balanced, and sewage in the sanitary ware cannot flow back into the water outlet cavity, so that the cleanliness of the water outlet cavity is ensured.

The anti-freezing component 4 is communicated with the water inlet cavity 5, water in the water inlet cavity 5 freezes in a low-temperature environment, the volume of the water after freezing expands, so that the water in the water inlet cavity 5 enters a cavity provided with the anti-freezing component 4 along the first through hole 25 in the freezing process, at the moment, the mounting pad 44 is firstly squeezed and pushes the pressure relief valve core 41 to move upwards synchronously, the water inlet cavity 5 is communicated with the anti-freezing channel 13, and the pressure in the water inlet cavity 5 is released. When the pressure relief valve core 41 moves upwards, the accommodating space of the water inlet cavity 5 is enlarged, and the water storage capacity of the water inlet cavity 5 is increased. Therefore, the accommodating space of the water inlet cavity 5 is enlarged by the movement of the pressure relief valve core 41, the inner wall of the water inlet cavity 5 is reduced by water pressure, the water inlet cavity 5 is not easy to crack under the low-temperature environment, and the use is more stable and reliable.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (10)

1. A flush valve with an anti-freezing function is characterized by comprising a valve seat (1), a sealing assembly (2), an electromagnetic control assembly (3) and an anti-freezing assembly (4), wherein a water inlet cavity (5) and two water outlet cavities (6) which are oppositely arranged are arranged in the valve seat (1), and each water outlet cavity (6) is arranged adjacent to the water inlet cavity (5); the anti-freezing component (4) is arranged in the valve seat (1) and is adjacent to the water inlet cavity (5), and a first through hole (7) for communicating the anti-freezing component (4) and the water inlet cavity (5) is formed between the anti-freezing component (4) and the water inlet cavity; the anti-freezing assembly (4) comprises a pressure relief valve core (41) and a first spring (42), and when the water level in the water inlet cavity (5) changes, the water pressure pushes the pressure relief valve core (41) to move relative to the first through hole (7).

2. The antifreeze functional flush valve of claim 1, wherein said antifreeze assembly (4) further comprises an adjusting screw (43) and a mounting pad (44); the adjusting screw (43) is in threaded connection with the valve seat (1), and the pressure relief valve core (41) is arranged below the adjusting screw (43) and is coaxial with the adjusting screw; the mounting pad (44) is arranged below the pressure relief valve core (41) and is adjacent to the first through hole (7), and the pressure relief valve core (41) is sleeved on the mounting pad (44); the first spring (42) is arranged between the adjusting screw (43) and the pressure relief valve core (41), one end of the first spring (42) abuts against the adjusting screw (43), and the other end of the first spring (42) abuts against the pressure relief valve core (41); when the water pressure in the water inlet cavity (5) pushes the mounting pad (44), the pressure relief valve core (41) moves relative to the first through hole (7).

3. The flush valve with the antifreezing function according to claim 2, wherein a cylindrical protrusion (45) is disposed on an end surface of the pressure relief valve core (41) facing the adjusting screw (43), a mounting through hole (46) for accommodating the cylindrical protrusion (45) is disposed in the adjusting screw (43), and a diameter of the mounting through hole (46) is matched with an outer diameter of the cylindrical protrusion (45).

4. The flushing valve with the antifreezing function as claimed in claim 2, wherein the pressure relief valve core (41) is provided with a first step (47) for placing the first spring (42), the adjusting screw (43) is provided with a second step (48) for placing the first spring (42), one end of the first spring (42) abuts against the first step (47), and the other end of the first spring abuts against the second step (48); the first spring (42) is coaxially arranged with the adjusting screw (43) and the pressure relief valve core (41), respectively.

5. The flush valve with antifreeze function of claim 1, characterized in that a sealing component (2) is arranged between the water inlet cavity (5) and each water outlet cavity (6), and the sealing component (2) comprises a sealing element (21), a sealing bracket (22), an anti-blocking spring (23) and a sealing cover (24); a transition channel (8) is arranged at the inlet of the valve seat (1) close to each water outlet cavity (6), and the transition channel (8) and the sealing assembly (2) are mutually surrounded to form a transition cavity for temporarily storing a water source; the edge of the sealing element (21) is arranged on the side wall of the transition channel (8), the sealing cover (24) is mutually attached to the edge of the sealing element (21) and detachably connected with the valve seat (1), and the end face of the sealing element (21), which is back to the sealing cover (24), abuts against the inlet of the water outlet cavity (6); the anti-blocking device is characterized in that a first channel (25) used for limiting an anti-blocking spring (23) is arranged on the sealing support (22), the anti-blocking spring (23) is arranged between the sealing support (22) and the sealing cover (24), an extension column (231) is arranged at the tail end, facing the sealing support (22), of the anti-blocking spring (23), and the extension column (231) is arranged in the first channel (25); one end of the anti-blocking spring (23) is abutted against the sealing bracket (22), and the other end of the anti-blocking spring is abutted against the sealing cover (24); the water outlet device is characterized in that a second channel (26) and a third channel (27) are arranged on the sealing cover (24), the first channel (25) is communicated with the second channel (26), the second channel (26) is arranged between the first channel (25) and the third channel (27), the third channel (27) is communicated with an outlet of the water outlet cavity (6), and an electromagnetic control assembly (3) is arranged at an inlet of the third channel (27).

6. The rinse valve with antifreeze function of claim 5, characterized in that the transition channel (8) is provided with a first groove (10) for mounting a seal (21), the edge of the seal (21) being arranged in the first groove (10); the sealing element (21), the sealing bracket (22) and the anti-blocking spring (23) are coaxially arranged; the sealing component (2) is in a closed state when the sealing element (21) is mutually attached to the inlet of the water outlet cavity (6), and the sealing component (2) is in an open state when the sealing element (21) is far away from the inlet of the water outlet cavity (6).

7. The washing valve with the antifreezing function as claimed in claim 5, wherein the sealing member (21) is detachably connected to the sealing bracket (22), two limiting protrusions (28) for mounting the sealing member (21) are disposed on the sealing bracket (22), the two limiting protrusions (28) are disposed side by side up and down, and a first channel (25) for placing the extending column (231) is disposed on the limiting protrusion (28) near the inlet of the water inlet chamber (5).

8. The antifreeze function flushing valve according to claim 5, wherein the electromagnetic control assembly (3) comprises a coil plastic shell (31), a static iron core (32), a movable iron core (33), a second spring (34), a rubber core (35), an upper iron plate (36), a lower iron plate (37), a first washer (38) and a first O-ring (39); the coil plastic shell (31) is detachably connected with the sealing cover (24), the upper iron plate (36) is arranged at the top of the coil plastic shell (31), and the lower iron plate (37) is arranged between the coil plastic shell (31) and the sealing cover (24) and arranged on the surface of the sealing cover (24); a first gasket (38) and a first O-shaped ring (39) are further arranged between the coil plastic shell (31) and the sealing cover (24), the first gasket (38) is arranged close to an inlet of the sealing cover (24), and the first O-shaped ring (39) is arranged adjacent to the first gasket (38); the static iron core (32) and the movable iron core (33) are both arranged in the coil plastic shell (31), the static iron core (32) is arranged above the movable iron core (33) and is adjacent to the upper iron plate (36), a second spring (34) is arranged between the static iron core (32) and the movable iron core (33), a rubber core (35) is arranged at the bottom of the movable iron core (33), and the rubber core (35) faces the third channel (27); when the coil plastic shell (31) is electrified, the movable iron core (33) overcomes the elastic force of the second spring (34) and is mutually attracted with the static iron core (32), and when the coil plastic shell (31) is powered off, the movable iron core (33) enables the rubber core (35) to abut against the inlet of the third channel (27) under the action of the elastic force of the second spring (34); when the electromagnetic control assembly (3) is electrified, the third channel (27) is in a conducting state, and when the electromagnetic control assembly (3) is powered off, the third channel (27) is in a closing state.

9. The flushing valve with the antifreezing function as claimed in claim 1, wherein the valve seat (1) is further provided with water outlet channels (11) corresponding to the water outlet cavities (6), and the water outlet channels (11) are communicated with the water outlet cavities (6); an anti-backflow assembly (9) is arranged on the water outlet channel (11), and the anti-backflow assembly (9) comprises a mounting seat (91), a movable inner core (92), an air inlet seat (93), a second gasket (94), a third gasket (95) and a buckle (96); the mounting seat (91) is arranged on a step on the inner wall of the water outlet channel (11), and the air inlet seat (93) is arranged at the top port of the water outlet channel (11) and is arranged on the water outlet channel (11) through a buckle (96); a second gasket (94) is arranged between the air inlet seat (93) and the mounting seat (91), and the outer wall of the second gasket (94) is attached to the inner wall of the water outlet channel (11); an air inlet channel (12) is arranged between the air inlet seat (93) and each water outlet channel (11), each air inlet channel (12) is in one-to-one correspondence with each water outlet channel (11), and a third gasket (95) is arranged between the air inlet channel and each water outlet channel; a movable inner core (92) is arranged between the third gasket (95) and the mounting seat (91), and water flow in the water outlet cavity (6) enters the water outlet channel (11) to form pressure difference so that the movable inner core (92) moves up and down relative to the mounting seat (91).

10. The washing valve with antifreezing function as claimed in claim 9, wherein the water outlet passage (11) is isolated from the water inlet passage when the movable core (92) abuts against the third gasket (95), and the water outlet passage (11) is conducted to the water inlet passage when the movable core (92) is away from the third gasket (95); the air inlet seat (93) is also provided with an anti-freezing channel (13), and the anti-freezing channel (13) is communicated with the anti-freezing component (4) in the same way.

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