CN216108823U - Anti-siphon assembly, drainage device and closestool device - Google Patents

Abstract

The utility model provides an anti-siphon assembly, a drainage device and a closestool device, wherein the anti-siphon assembly comprises: a water inlet pipe; the water in the water inlet pipe flows to the water outlet pipe under the action of the water inlet pressure; when the water inlet pipe is in a water-cut state, an air partition is formed between the water outlet end of the water inlet pipe and the water inlet end of the water outlet pipe; when the water inlet pipe is in a water inlet state, the movable part moves under the action of driving force and at least partially closes the air partition so as to prevent or reduce the water of the water inlet pipe from flowing out of the air partition; or, under the water inlet state of the water inlet pipe, the water outlet end of the water inlet pipe and the water inlet end of the water outlet pipe are relatively close to shorten or eliminate the air partition.

Description

Anti-siphon assembly, drainage device and closestool device

Technical Field

The utility model relates to the field of toilets, in particular to an anti-siphon component, a drainage device and a toilet device.

Background

On the fluid supply pipeline (like intelligent closestool's human belt cleaning device's supply channel), in order to avoid the water supply source (like the water supply net) to cut off water suddenly, lead to appearing the negative pressure on the supply channel, and then lead to supply channel to form the negative pressure siphon and make outside fluid backward flow and cause the problem of pollution to the supply channel, some adoption of prior art set up the air on the supply channel and cut off, the rivers that air cut off the upper reaches rely on water pressure to spray and flow into in the water route of air cut off low reaches behind the air cut off, owing to set up the air cut off, make supply channel communicate with the outside air all the time, therefore, even the negative pressure appears in the supply channel, can not form siphon countercurrent phenomenon yet, the problem that the siphon caused the pollution to the supply channel against the current has effectively been stopped.

Because be provided with the air in the water supply pipeline and cut off, rivers will lead to the pressure and the flow of rivers to reduce greatly through the air after cutting off to air cuts off the department and easily has more rivers to leak, still need set up in addition under some circumstances and carries out the structure of drainage to leaking rivers, and the structure is more complicated.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an anti-siphon component, a drainage device and a closestool device.

The utility model aims to solve the problem that the prior art adopts an air partition design, so that more water flow is easy to leak from the air partition, and the water flow pressure and flow loss are large.

Compared with the prior art, the technical scheme and the beneficial effects of the utility model are as follows:

an anti-siphon assembly comprising: a water inlet pipe; the water in the water inlet pipe flows to the water outlet pipe under the action of the water inlet pressure; when the water inlet pipe is in a water-cut state, an air partition is formed between the water outlet end of the water inlet pipe and the water inlet end of the water outlet pipe; when the water inlet pipe is in a water inlet state, the movable part moves under the action of driving force and at least partially closes the air partition so as to prevent or reduce the water of the water inlet pipe from flowing out of the air partition; or, under the water inlet state of the water inlet pipe, the water outlet end of the water inlet pipe and the water inlet end of the water outlet pipe are relatively close to shorten or eliminate the air partition.

As a further improvement, the movable member is a water blocking element, and the water blocking element moves along the axial direction or the circumferential direction of the water inlet pipe under the water inlet pressure of the water inlet pipe or under the driving of a first driving mechanism so as to at least partially close the air partition; and after the water inlet pipe stops feeding water, the water retaining element resets and opens the air partition.

As a further improvement, the water blocking element is reset under the action of the elastic force of the first elastic piece or the magnetic attraction force of the magnetic attraction piece or the self gravity.

As a further improvement, the water blocking element is a water guiding pipe, the water guiding pipe is in telescopic fit with the water inlet pipe, the water guiding pipe extends out relative to the water inlet pipe under the water inlet pressure of the water inlet pipe or under the drive of a first driving mechanism and abuts against the water inlet end of the water outlet pipe to completely close the air partition, or the water guiding pipe extends out relative to the water inlet pipe under the water inlet pressure of the water inlet pipe or under the drive of the first driving mechanism and has a certain gap with the water inlet end of the water outlet pipe to partially close the air partition; after the water inlet pipe stops feeding water, the water guide pipe is reset to the position retracted into the water inlet pipe, so that the air partition is opened.

As a further improvement, an annular flange which protrudes along the radial direction of the water guide pipe is arranged on the outer wall of the water guide pipe, and the annular flange is matched with the inner wall of the water inlet pipe.

As a further improvement, the water inlet pipe further comprises a first elastic element for driving the water guide pipe to reset, and the first elastic element is elastically propped between the annular flange of the water guide pipe and the inner wall of the water outlet end of the water inlet pipe.

As a further improvement, a sealing ring is arranged between the outer wall of the water guide pipe and the inner wall of the water inlet pipe, and the sealing ring is arranged at the annular flange.

As a further improvement, an end face sealing fit is formed between the end face of the water outlet end of the water guide pipe and the end face of the water inlet end of the water outlet pipe, so that when the water guide pipe extends in place, the water outlet end of the water guide pipe is in sealing communication with the water inlet end of the water outlet pipe; or the peripheral surface of the water outlet end of the water guide pipe and the peripheral surface of the water inlet end of the water outlet pipe form sealing fit, so that when the water guide pipe extends out in place, the water outlet end of the water guide pipe is communicated with the water inlet end of the water outlet pipe in a sealing mode.

As a further improvement, a water retaining sheet is formed on the end surface of the water inlet end of the water guide pipe, and a water inlet of the water guide pipe is formed on the side wall of the water guide pipe close to the end surface of the water inlet end of the water guide pipe; or the water inlet of the water guide pipe is axially arranged at the water inlet end of the water guide pipe.

As a further improvement, the water distributor further comprises a first elastic element for driving the water distributor to reset, a one-way plug and a second elastic element are arranged in the water distributor, the second elastic element enables the one-way plug to close the water inlet of the water distributor, and the elastic force of the first elastic element is smaller than that of the second elastic element.

As a further improvement, the first driving mechanism adopts an electric driving mechanism or a mechanical driving mechanism, and the electric driving mechanism comprises: a motor; the gear is connected to the output end of the motor; the rack is matched with the gear, and the rack is arranged on the outer side of the water guide pipe; the motor drives the water guide pipe to be matched with the water inlet pipe in a telescopic mode through the matching of the gear and the rack.

As a further improvement, the water inlet pipe moves towards the direction close to the water outlet pipe under the action of the water inlet pressure of the water inlet pipe or the action of a second driving mechanism; and/or the water outlet pipe moves towards the direction close to the water inlet pipe under the action of a second driving mechanism.

As a further improvement, the second driving mechanism adopts a fluid driving mechanism, the fluid driving mechanism includes a piston rod, the piston rod is in transmission connection with the water inlet pipe or the water outlet pipe, the piston rod drives the water inlet pipe to move towards the direction of the water outlet pipe under the action of fluid pressure, or the piston rod drives the water outlet pipe to move towards the direction of the water inlet pipe under the action of fluid pressure, so as to shorten or eliminate the air partition.

As a further improvement, the water inlet pipe or the water outlet pipe is sleeved in the fixed pipe, the outer wall of the water inlet pipe or the water outlet pipe is connected with the inner wall of the fixed pipe through threads or is connected with the inner wall of the fixed pipe through a rifling, and the second driving mechanism drives the water inlet pipe or the water outlet pipe to rotate so as to be connected with the fixed pipe, so that the water inlet pipe or the water outlet pipe is telescopic relative to the fixed pipe.

As a further improvement, the length of the air partition is more than or equal to 20 mm; the water outlet end of the water inlet pipe corresponds to the water inlet end of the water outlet pipe.

As a further improvement, the water-saving device further comprises a water flow sensor arranged in the water inlet pipe or a water path upstream of the water inlet pipe, wherein a sensing signal of the water flow sensor is used for controlling the opening and closing of the first driving mechanism or the second driving mechanism.

A drainage device of a toilet cistern comprises a hydraulic driving device, wherein the hydraulic driving device comprises any one of the anti-siphon assemblies.

A toilet device comprising a personal cleaning device comprising an anti-siphon assembly as claimed in any one of the preceding claims.

The utility model has the beneficial effects that:

by arranging the anti-siphon component, the moving part opens the air partition when the water inlet pipe is not in a water inlet state (namely, the water inlet pipe is in a water stop state), so that a fluid passage formed by the water inlet pipe and the water outlet pipe is communicated with the outside air, and the siphon countercurrent phenomenon of the fluid passage can be effectively prevented; under the water inlet state of the water inlet pipe, the movable part at least partially closes the air partition or the water outlet end of the water inlet pipe and the water inlet end of the water outlet pipe are relatively close to each other, so that more water flow cannot leak out of the air partition, and further, the water flow cannot have larger pressure and flow loss, the cleaning effect is ensured, other parts cannot be influenced by the leaked water flow, and a drainage structure for draining the leaked water flow is not required to be designed in a larger space, so that the space is saved.

The moving part is a water retaining element, the water retaining element is moved along the axial direction of the water inlet pipe under the water inlet pressure of the water inlet pipe or under the driving of the first driving mechanism to at least partially close the air partition, the water retaining element adopts a water guide pipe, and the water guide pipe is in telescopic fit with the water inlet pipe.

The one-way plug capable of closing the water inlet of the water guide pipe is arranged in the water guide pipe, and the elastic force of the first elastic piece is smaller than that of the second elastic piece, so that the water guide pipe can be ensured to extend in place firstly and then the water inlet of the water guide pipe is opened for water inlet, the situation that water flows leak from the water guide pipe when the water guide pipe does not extend in place when the water inlet pipe starts to enter water is avoided, and the effect of blocking water flow leakage is better; in addition, under the condition of low water pressure, the water guide pipe can be ensured to extend in place.

The moving part adopts the transmission of a first driving mechanism comprising a motor and a rack gear, so that the distance of the air partition is controllable and the switching efficiency is high.

The water inlet pipe moves towards the direction close to the water outlet pipe under the action of the water inlet pressure of the water inlet pipe or the action of a second driving mechanism; and/or the water outlet pipe moves towards the direction close to the water inlet pipe under the action of the second driving mechanism, and the water outlet pipe is simple in structure and reliable in function.

The second driving mechanism adopts a fluid driving mechanism, the fluid driving mechanism comprises a piston rod, the piston rod is in transmission connection with the water inlet pipe or the water outlet pipe, the switching efficiency of the air partition can be improved by adopting the fluid driving mechanism, the structure is simple, and the control is reliable.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment of the present invention.

Fig. 2 is a structural sectional view of an anti-siphon assembly provided in a water cut-off state according to an embodiment of the present invention.

Fig. 3 is a structural sectional view of an anti-siphon assembly provided in an embodiment of the present invention in a water inlet state.

Fig. 4 is a schematic structural diagram of a water guiding pipe according to an embodiment of the present invention.

Fig. 5 is a structural sectional view of an anti-siphon assembly provided by the second embodiment of the present invention in a water cut-off state.

Fig. 6 is a structural sectional view of an anti-siphon assembly provided by the second embodiment of the present invention in a water inlet state.

Fig. 7 is a structural sectional view of an anti-siphon assembly provided by the third embodiment of the present invention in a water cut-off state.

Fig. 8 is a structural sectional view of an anti-siphon assembly provided by a third embodiment of the utility model in a water inlet state.

Fig. 9 is a structural sectional view of an anti-siphon assembly provided in the fourth embodiment of the present invention in a water cut-off state.

Fig. 10 is a structural sectional view of an anti-siphon assembly provided in the fifth embodiment of the present invention in a water cut-off state.

Fig. 11 is a schematic perspective view of an anti-siphon assembly according to a sixth embodiment of the present invention.

Fig. 12 is a sectional view showing the structure of an anti-siphon assembly according to the sixth embodiment of the present invention.

Fig. 13 is a structural sectional view of an anti-siphon assembly provided by the seventh embodiment of the present invention in a water inlet state.

Fig. 14 is a schematic structural view of an anti-siphon assembly according to the ninth embodiment of the present invention.

Fig. 15 is a sectional view of a first structure of an anti-siphon assembly according to a ninth embodiment of the present invention.

Fig. 16 is a sectional view of a second structure of an anti-siphon assembly according to a ninth embodiment of the present invention.

Fig. 17 is a sectional view showing the structure of an anti-siphon assembly according to a tenth embodiment of the present invention.

Fig. 18 is an exploded sectional view of an anti-siphon assembly according to an eleventh embodiment of the present invention.

Fig. 19 is an exploded view of an anti-siphon assembly according to the eleventh embodiment of the present invention.

Fig. 20 is a structural sectional view of an anti-siphon assembly provided in the eleventh embodiment of the present invention in a water cut-off state.

Fig. 21 is a schematic view of an anti-siphon assembly according to a twelfth embodiment of the present invention in a water cut-off state.

Fig. 22 is a schematic view of an anti-siphon assembly according to a twelfth embodiment of the present invention in a water inlet state.

Fig. 23 is a schematic view of a drainage device provided in a thirteenth embodiment of the present invention in a water-cut state.

Fig. 24 is a schematic view of a water discharge apparatus provided in a thirteenth embodiment of the present invention in a water intake state.

Fig. 25 is a partial schematic structural view of a toilet device according to a fourteenth embodiment of the present invention.

Fig. 26 is a partial structural schematic view of a toilet device provided by the fifteenth embodiment of the utility model.

In the figure: 1. water inlet pipe 2, water outlet pipe 3, air partition

31. Water retaining wall 311, first wall 312, second wall

4. Water guiding pipe 41, water retaining sheet 42, water inlet

43. Annular flange 5, first elastic part 6, sealing ring

7. Sealing element 8, second elastic element 9, one-way plug

10. Connecting piece 11, fixing frame 12, conical surface

13. Water inlet cavity 14, motor 15 and gear

16. Rack 17, piston rod 18, fixed tube

19. Screw thread 20, transmission rod 21, hydraulic starting rod

22. Solenoid valve 23, reversing valve 24 and water spraying assembly

25. Water inlet hose 26, regulating valve A, anti-siphon assembly

d: length of air partition

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Example one

Referring to fig. 1 to 4, an anti-siphon assembly includes: a water inlet pipe 1; the water of the water inlet pipe 1 flows into the water outlet pipe 2 under the action of the water inlet pressure; when the water inlet pipe 1 is in a water-cut state, an air partition 3 is formed between the water outlet end of the water inlet pipe 1 and the water inlet end of the water outlet pipe 2; under the water inlet state of the water inlet pipe 1, a movable part moves under the action of driving force and at least partially closes the air partition 3 so as to prevent or reduce the water of the water inlet pipe 1 from flowing out of the air partition 3.

The movable piece is a water retaining element which moves along the axial direction or the circumferential direction of the water inlet pipe 1 under the water inlet pressure of the water inlet pipe 1 or under the driving of a first driving mechanism so as to at least partially close the air partition 3; and after the water inlet pipe 1 stops water inlet, the water retaining element resets and opens the air partition 3.

The water retaining element is a water guide pipe 4, the water guide pipe 4 is in telescopic fit with the water inlet pipe 1, the water guide pipe 4 extends out relative to the water inlet pipe 1 under the water inlet pressure of the water inlet pipe 1 or under the drive of a first driving mechanism and is abutted against the water inlet end of the water outlet pipe 2 so as to completely close the air partition 3, or the water guide pipe 4 extends out relative to the water inlet pipe 1 under the water inlet pressure of the water inlet pipe 1 or under the drive of the first driving mechanism and has a certain gap with the water inlet end of the water outlet pipe 2 so as to partially close the air partition 3; after the water inlet pipe 1 stops water inlet, the water guide pipe 4 is reset to the position retracted into the water inlet pipe 1, so that the air partition 3 is opened.

The water retaining element is designed into the water guide pipe 4, and the telescopic matching of the water guide pipe 4 and the water inlet pipe 1 has the advantages of small or even negligible influence on the flow and pressure of water flow, better effect and simpler structure.

In this embodiment, the water guiding pipe 4 moves along the axial direction of the water inlet pipe 1 under the water inlet pressure of the water inlet pipe 1 to at least partially close the air partition 3.

The length d of the air partition 3 is more than or equal to 20 mm.

Referring to fig. 2 to 3, the water outlet end of the water inlet pipe 1 corresponds to the water inlet end of the water outlet pipe 2, and preferably, the water guide pipe 4 is a straight pipe.

The present embodiment further provides a first elastic member 5, the water guiding pipe 4 is reset under the elastic force of the first elastic member 5, the first elastic member 5 is sprung between an annular flange 43 of the water guiding pipe 4 and the inner wall of the water outlet end of the water inlet pipe 1, and the annular flange 43 is described in detail below. In other embodiments, the water conduit 4 may be reset by the magnetic attraction of a magnetic attraction member (not shown) or the self-gravity of the water conduit 4. The first elastic piece 5 is adopted to apply resetting force to the water guide pipe 4, so that the water guide pipe 4 is reset more reliably and has a simpler structure. When the magnetic attraction piece is used for providing the restoring force of the water guide pipe 4, one magnetic attraction piece can be arranged on the water guide pipe 4, the other magnetic attraction piece is arranged on the water inlet pipe 1, and the two magnetic attraction pieces are matched in a magnetic attraction mode to enable the water guide pipe 4 to be restored.

Referring to fig. 2 to 3, an annular flange 43 protruding in a radial direction of the water guide pipe 4 is provided on an outer wall of the water guide pipe 4, and the annular flange 43 is engaged with an inner wall of the water inlet pipe 1, such that the water guide pipe 4 and the inner wall of the water inlet pipe 1 define a water inlet chamber 13 therebetween, thereby facilitating the water pressure of the water inlet chamber 13 to push the water guide pipe 4 to protrude.

Referring to fig. 2, a sealing ring 6 is provided between the outer wall of the water introduction pipe 4 and the inner wall of the water inlet pipe 1, and the sealing ring 6 is installed at the annular flange 43. The sealing ring 6 can prevent water flow from flowing out of the water guide pipe 4.

Referring to fig. 2, a sealing member 7 is disposed between the water outlet end surface of the water conduit 4 and the water inlet end surface of the water outlet pipe 2, the water outlet end surface of the water conduit 4 and the water inlet end surface of the water outlet pipe 2 are in end surface sealing fit through the sealing member 7, and when the water conduit 4 extends in place, the water outlet end of the water conduit 4 and the water inlet end of the water outlet pipe 2 are in sealing communication, so that water leakage can be further avoided.

Referring to fig. 4, a water blocking sheet 41 is formed on the end surface of the water inlet end of the water conduit 4, and a water inlet 42 of the water conduit 4 is formed on the side wall of the water conduit 4 close to the end surface of the water inlet end of the water conduit 4;

referring to fig. 1 to 2, the inlet pipe 1 and the outlet pipe 2 are connected by a connection member 10, and the connection member 10 is located between the air partitions 3.

Of course, the water guiding pipe 4 may be driven by a first driving mechanism (not shown) besides the water inlet pressure of the water inlet pipe 1, and the first driving mechanism may be an electric driving mechanism or a mechanical driving mechanism, wherein the electric driving mechanism may include: a motor; the gear is connected to the output end of the motor; the rack is matched with the gear, and is arranged on the outer side of the water guide pipe 4; the motor drives the water guide pipe to be matched with the water inlet pipe 1 in a telescopic way through the matching of the gear and the rack; the rack may be integrally formed with the water introduction duct 4. The water guide pipe 4 is driven by the motor, the structure is simple, and the driving is reliable.

Example two

Referring to fig. 5 to 6, the difference between the present embodiment and the first embodiment is that the first embodiment employs: the water outlet end face of the water guide pipe 4 and the water inlet end face of the water outlet pipe 2 form end face sealing fit, and the embodiment adopts that: the peripheral surface of the water outlet end of the water guide pipe 4 and the peripheral surface of the water inlet end of the water outlet pipe 2 form sealing fit, so that when the water guide pipe 4 extends in place, the water outlet end of the water guide pipe 4 is communicated with the water inlet end of the water outlet pipe 2 in a sealing mode.

Specifically, the water outlet end of the water guiding pipe 4 is matched with the water inlet end of the water outlet pipe 2 through the tapered surface 12, so that when the water guiding pipe 4 extends in place, the water outlet end of the water guiding pipe 4 is communicated with the water inlet end of the water outlet pipe 2, and compared with the first embodiment, one sealing element 7 can be omitted. In other embodiments, the tapered surface 12 may be replaced by a spherical surface.

EXAMPLE III

Referring to fig. 7 to 8, the difference between the first embodiment and the second embodiment is that a one-way plug 9 and a second elastic member 8 are disposed in the water conduit 4, the second elastic member 8 enables the one-way plug 9 to close the water inlet 42 of the water conduit 4, and the elastic force of the first elastic member 5 is smaller than the elastic force of the second elastic member 8, so that the water inlet pressure of the water inlet pipe 1 can overcome the elastic force of the first elastic member 5, the water conduit 4 extends out first, and then the elastic force of the second elastic member 8 is overcome, thereby opening the water inlet 42 of the water conduit 4.

Compared with the first embodiment, the one-way plug 9 is arranged in the water guide pipe 4, the elastic force of the first elastic piece 5 is smaller than that of the second elastic piece 8, the one-way plug 9 is in a closed state under the action of the second elastic piece 8 when the water inlet pipe 1 initially enters water, so that the water inlet water pressure overcomes the elastic force of the first elastic piece 5 firstly to enable the water guide pipe 4 to stretch out firstly, the water pressure overcomes the elastic force of the second elastic piece 8 after the water guide pipe 4 stretches out to open the one-way plug 9, the water guide pipe 4 is ensured to stretch out to the right position firstly and then the water inlet 42 of the water guide pipe 4 is opened to enter water, the situation that water flows leak from the water guide pipe 4 when the water inlet pipe 1 begins to enter water is avoided, and the water flow leakage blocking effect is better; in addition, under the condition of lower water pressure, the water guide pipe 4 can be ensured to extend in place, the requirement on the water pressure of inlet water is lower, and the application range is larger.

Example four

Referring to fig. 9, the present embodiment is different from the first embodiment in that the water inlet 42 of the water conduit 4 is axially provided at the water inlet end of the water conduit 4. Compared with the first embodiment, the present embodiment omits the structure of the water blocking sheet 41, and the water inlet 42 of the water guiding pipe 4 is axially opened. In addition, the structure of the seal 7 is omitted in this embodiment.

EXAMPLE five

Referring to fig. 10, the difference between the present embodiment and the fourth embodiment is that the water blocking wall 31 is disposed at the air blocking wall 3, the water blocking wall 31 includes a first wall 311 and a second wall 312, the first wall 311 extends along the axial direction of the water inlet pipe 1, the second wall 312 divides the air blocking wall 3 into two sections, one side of the first wall 311 is connected to the water inlet pipe 1, the other side is connected to the second wall 312, the water outlet end wall of the water inlet pipe 1, the first wall 311 and the second wall 312 enclose a cavity with an opening at the bottom, and the second wall 312 is provided with a through hole for the water guide pipe 4 to pass through. The water blocking wall 31 is provided to block the water flow jetted upward when the water introduction duct 4 is just started to be extended.

EXAMPLE six

Referring to fig. 11 to 12, the present embodiment is different from the first embodiment in that a connector 10 is located outside the air partition 3, and a portion of the water inlet pipe 1 and a portion of the water outlet pipe 2 are connected by a fixing frame 11.

EXAMPLE seven

Referring to fig. 13, the main difference between the present embodiment and the above embodiments is that the water blocking element of each of embodiments 1 to 6 completely closes the air partition 3 under the action of the pressure of the inlet water, while the water blocking element of the present embodiment only partially closes the air partition 3 under the action of the pressure of the inlet water.

Specifically, in this embodiment, the water guiding pipe 4 extends out of the water inlet pipe 1 under the water inlet pressure of the water inlet pipe 1 and has a certain gap L (as shown in fig. 13) with the water inlet end of the water outlet pipe 2 to partially close the air partition 3, so as to achieve the purpose of reducing the water amount of the water in the water inlet pipe 1 flowing out from the air partition 3. The value of the clearance L in the embodiment is 5 mm.

EXAMPLE eight (not shown)

The present embodiment is different from the above embodiments in that the water blocking element may also be adapted to slide back and forth along the circumferential direction of the water inlet pipe 1, thereby opening or closing the air partition 3. Specifically, the water blocking element can be flexibly and movably arranged on the connecting piece 10, the water blocking element can be arranged to be of an arc-shaped baffle structure, and the water blocking element slides and stretches relative to the connecting piece 10 along the circumferential direction of the water inlet pipe 1 under the action of the water inlet pressure of the water inlet pipe 1 so as to close the air partition 3.

Example nine

Referring to fig. 14 to 16, the main difference between the present embodiment and the above embodiments is that the above embodiments all use a movable member (water blocking element) to open or close the air partition 3. In the present embodiment, the scheme is that, in the water inlet state of the water inlet pipe 1, the water outlet end of the water inlet pipe 1 and the water inlet end of the water outlet pipe 2 are relatively close to each other to shorten or eliminate the air partition 3.

Specifically, the water inlet pipe 1 can also move towards the direction close to the water outlet pipe 2 under the action of the water inlet pressure of the water inlet pipe 1 or the action of a second driving mechanism; and/or the water outlet pipe 2 moves towards the direction close to the water inlet pipe 1 under the action of a second driving mechanism.

In this embodiment, the water inlet pipe 1 is moved toward the water outlet pipe 2 under the action of the second driving mechanism. The second driving mechanism adopts an electric driving mechanism, and the electric driving mechanism comprises: a motor 14; the gear 15, the said gear 15 is connected to the output end of the said electric motor 14; the rack 16 is matched with the gear 15, the rack 16 is arranged outside the water inlet pipe 1, and the rack 16 and the water inlet pipe 1 are integrally formed; the motor 14 drives the water inlet pipe 1 to be close to or far from the water outlet pipe 2 through the matching of the gear 15 and the rack 16.

Example ten

Referring to fig. 17, the main difference between the present embodiment and the ninth embodiment is that the second driving mechanism is a mechanical structure, specifically, the driving rod 20 is used to replace the motor 14 to be matched with the gear 15, one end of the driving rod 20 is matched with the rack 16 through the gear 15 to drive the water inlet pipe 1 to move, the other end of the driving rod 20 can be in transmission fit with a mechanical button or a mechanical handle, the mechanical button or the mechanical handle can be used as a water inlet switch of the water inlet pipe 1, when the water inlet switch is turned on, the water inlet pipe 1 extends out, and when the water inlet switch is turned off, the water inlet pipe 1 retracts.

EXAMPLE eleven

Referring to fig. 18 to 20, the main difference between the present embodiment and the ninth and tenth embodiments is that the second driving mechanism of the ninth and tenth embodiments uses a motor 14, a gear 15 and a rack 16 to drive the water inlet pipe 1, and the second driving mechanism of the present embodiment uses a screw drive.

Specifically, this embodiment still includes fixed pipe 18, fixed pipe 18 pass through connecting piece 10 with outlet pipe 2 fixed connection, just fixed pipe 18 cover is located the inlet tube 1 outside, through threaded connection or come the compound line connection between the inner wall of inlet tube 1 and fixed pipe 18. In this embodiment, the water inlet pipe 1 and the fixed pipe 18 are connected by screw threads. The second driving mechanism drives the water inlet pipe 1 to rotate so as to be connected with the fixed pipe 18, so that the water inlet pipe 1 stretches and retracts relative to the fixed pipe 18 to be close to or far away from the water outlet pipe 2.

The inner wall of the fixed pipe 18 is provided with a thread section, the outer side of the water inlet pipe 1 is provided with a section of thread 19 matched with the thread section, and when the second driving mechanism rotates the water inlet pipe 1, the water inlet pipe 1 stretches and retracts relative to the fixed pipe 18.

Example twelve

Referring to fig. 21 to 22, the main difference between the present embodiment and the ninth to 11 embodiments is that the second driving mechanism of the ninth to 11 embodiments employs an electric driving mechanism or a mechanical driving mechanism, and the second driving mechanism of the present embodiment employs a fluid driving mechanism.

Specifically, fluid drive mechanism includes piston rod 17, piston rod 17 with inlet tube 1 or outlet pipe 2 transmission is connected, piston rod 17 drives under the action of fluid pressure inlet tube 1 is toward being close to 2 direction activities of outlet pipe, or, piston rod 17 drives under the action of fluid pressure outlet pipe 2 is toward being close to 1 direction activities of inlet tube to shorten or eliminate the air cuts off 3. The fluid may be a liquid or a gas, and the fluid may be supplied by a water pump or a gas pump.

The piston rod 17 of this embodiment is fixedly connected with the water inlet pipe 1 through threads, and the piston rod 17 drives the water inlet pipe 1 to be close to or far away from the water outlet pipe 2.

EXAMPLE thirteen

The utility model also provides a drainage device of a toilet water tank, which comprises a hydraulic driving device, wherein the hydraulic driving device comprises any one of the anti-siphon assemblies.

Referring to fig. 23 to 24, the anti-siphon assembly a is disposed on a water path of a hydraulic driving device of a drainage device of a toilet tank, and the solenoid valve 22 controls opening and closing of the water path, thereby controlling water inlet or water outlet of the water inlet pipe 1, and water flowing out of the water outlet pipe 2 of the anti-siphon assembly a reaches the hydraulic actuating lever 21 of the hydraulic driving device, and drives the hydraulic actuating lever 21 to extend downward to actuate the drainage device (drainage valve) to open drainage.

Example fourteen

Referring to fig. 25, the present embodiment further provides a toilet apparatus including a body washing device including an anti-siphon assembly a as described in any one of the above. The anti-siphon component A is arranged in a water path of the human body cleaning device on the base of the toilet cover plate, and is connected between the reversing valve 23 and the water spraying component 24 through a water inlet hose 25.

Example fifteen

Referring to fig. 26, the main difference between this embodiment and the fourteenth embodiment is that the anti-siphon module a is disposed in the water path of the human body washing device on the toilet seat, and the anti-siphon module a is connected between the regulating valve 26 and the water spraying module 24 through the water inlet hose 25.

It should be noted that, in the embodiments that the first driving mechanism or the second driving mechanism is adopted in the above embodiments, a water flow sensor (not shown) disposed in the water inlet pipe 1 or an upstream water path of the water inlet pipe 1 may be further included, and a sensing signal of the water flow sensor is used for controlling the opening and closing of the first driving mechanism or the second driving mechanism, so as to drive the moving element or drive the water inlet pipe or drive the water outlet pipe.

The above examples are only for illustrating the technical solutions of the present invention and not for limiting the same. It will be understood by those skilled in the art that any modifications and equivalents may be made thereto without departing from the spirit and scope of the present invention as set forth in the appended claims.

Claims (18)

1. An anti-siphon assembly, comprising:

a water inlet pipe;

the water in the water inlet pipe flows to the water outlet pipe under the action of the water inlet pressure;

when the water inlet pipe is in a water-cut state, an air partition is formed between the water outlet end of the water inlet pipe and the water inlet end of the water outlet pipe;

when the water inlet pipe is in a water inlet state, the movable part moves under the action of driving force and at least partially closes the air partition so as to prevent or reduce the water of the water inlet pipe from flowing out of the air partition; or, under the water inlet state of the water inlet pipe, the water outlet end of the water inlet pipe and the water inlet end of the water outlet pipe are relatively close to shorten or eliminate the air partition.

2. The anti-siphon assembly according to claim 1, wherein the movable member is a water blocking member which is movable in an axial direction or a circumferential direction of the water inlet pipe under the water inlet pressure of the water inlet pipe or under the driving of the first driving mechanism to at least partially close the air partition; and after the water inlet pipe stops feeding water, the water retaining element resets and opens the air partition.

3. The anti-siphon assembly according to claim 2, wherein the water blocking member is restored by an elastic force of the first elastic member or a magnetic attraction force of the magnetic attraction member or a self gravity.

4. The anti-siphon assembly according to claim 2, wherein the water blocking element is a water guiding pipe, the water guiding pipe is telescopically matched with the water inlet pipe, the water guiding pipe extends out relative to the water inlet pipe under the water inlet pressure of the water inlet pipe or under the driving of a first driving mechanism and abuts against the water inlet end of the water outlet pipe to completely close the air partition, or the water guiding pipe extends out relative to the water inlet pipe under the water inlet pressure of the water inlet pipe or under the driving of the first driving mechanism and has a certain gap with the water inlet end of the water outlet pipe to partially close the air partition; after the water inlet pipe stops feeding water, the water guide pipe is reset to the position retracted into the water inlet pipe, so that the air partition is opened.

5. The anti-siphon assembly according to claim 4, wherein the outer wall of the water guide pipe is provided with an annular flange protruding in a radial direction of the water guide pipe, and the annular flange is matched with the inner wall of the water inlet pipe.

6. The anti-siphon assembly according to claim 5, further comprising a first elastic member for driving the water guide to return, wherein the first elastic member is sprung between the annular flange of the water guide and the inner wall of the water outlet end of the water inlet pipe.

7. The anti-siphon assembly according to claim 5, wherein a sealing ring is arranged between the outer wall of the water conduit and the inner wall of the water inlet pipe, and the sealing ring is mounted at the annular flange.

8. The anti-siphon assembly according to claim 4, wherein an end surface sealing fit is formed between the end surface of the water outlet end of the water conduit and the end surface of the water inlet end of the water outlet pipe, so that when the water conduit is extended in place, the water outlet end of the water conduit is in sealing communication with the water inlet end of the water outlet pipe; or the peripheral surface of the water outlet end of the water guide pipe and the peripheral surface of the water inlet end of the water outlet pipe form sealing fit, so that when the water guide pipe extends out in place, the water outlet end of the water guide pipe is communicated with the water inlet end of the water outlet pipe in a sealing mode.

9. The anti-siphon assembly according to claim 4, wherein the water inlet end surface of the water conduit forms a water retaining sheet, and a water inlet of the water conduit is formed on the side wall of the water conduit close to the water inlet end surface of the water conduit; or the water inlet of the water guide pipe is axially arranged at the water inlet end of the water guide pipe.

10. The anti-siphon assembly according to claim 4, further comprising a first elastic member for driving the water conduit to return, wherein a one-way plug and a second elastic member are disposed in the water conduit, the second elastic member enables the one-way plug to close the water inlet of the water conduit, and the elastic force of the first elastic member is smaller than that of the second elastic member.

11. An anti-siphon assembly according to claim 4, characterized in that the first driving mechanism adopts an electric driving mechanism or a mechanical driving mechanism, the electric driving mechanism comprising:

a motor;

the gear is connected to the output end of the motor;

the rack is matched with the gear, and the rack is arranged on the outer side of the water guide pipe;

the motor drives the water guide pipe to be matched with the water inlet pipe in a telescopic mode through the matching of the gear and the rack.

12. The anti-siphon assembly according to claim 1, wherein the water inlet pipe moves towards the direction close to the water outlet pipe under the action of the water inlet pressure of the water inlet pipe or the action of a second driving mechanism; and/or the water outlet pipe moves towards the direction close to the water inlet pipe under the action of a second driving mechanism.

13. The anti-siphon assembly according to claim 12, wherein the second driving mechanism is a fluid driving mechanism, the fluid driving mechanism comprises a piston rod, the piston rod is in transmission connection with the water inlet pipe or the water outlet pipe, and the piston rod drives the water inlet pipe to move towards the direction close to the water outlet pipe under the action of fluid pressure, or the piston rod drives the water outlet pipe to move towards the direction close to the water inlet pipe under the action of fluid pressure, so as to shorten or eliminate the air partition.

14. The anti-siphon assembly according to claim 12, further comprising a fixed pipe, wherein the water inlet pipe or the water outlet pipe is sleeved in the fixed pipe, the outer wall of the water inlet pipe or the water outlet pipe is connected with the inner wall of the fixed pipe through a thread or a rifling, and the second driving mechanism drives the water inlet pipe or the water outlet pipe to rotate so as to be connected with the fixed pipe, so that the water inlet pipe or the water outlet pipe is telescopic relative to the fixed pipe.

15. An anti-siphon assembly according to any of claims 1 to 14, characterised in that the length of the air partition is ≥ 20 mm; the water outlet end of the water inlet pipe corresponds to the water inlet end of the water outlet pipe.

16. The anti-siphon assembly according to claim 2 or 12, further comprising a water flow sensor disposed in the water inlet pipe or a water path upstream of the water inlet pipe, wherein a sensing signal of the water flow sensor is used for controlling the opening and closing of the first driving mechanism or the second driving mechanism.

17. A toilet cistern drain comprising a hydraulic drive characterised in that the hydraulic drive comprises an anti-siphon assembly as claimed in any one of claims 1 to 16.

18. A toilet device comprising a personal washing device, wherein the personal washing device comprises an anti-siphon assembly as claimed in any one of claims 1 to 16.

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