Anti-siphon assembly, drainage device and toilet device

Abstract

The application provides a siphon-preventing assembly, a drainage device and a toilet device. The siphon-preventing assembly comprises: a water inlet pipe; a water outlet pipe, water in the water inlet pipe flows to the water outlet pipe under the action of water inlet pressure; an air separation is formed between the water outlet end of the water inlet pipe and the water inlet end of the water outlet pipe in a water stop state of the water inlet pipe; in a water inlet state of the water inlet pipe, a movable piece moves and at least partially closes the air separation under the action of a driving force to prevent or reduce water in the water inlet pipe from flowing out of the air separation; or, in 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 separation.

Description

Technical Field

[0001] The present invention relates to the field of toilets, and more particularly to an anti-siphon assembly, a drainage device and a toilet device. Background Art

[0002] On the fluid water supply pipeline (such as the water supply pipeline of the human body cleaning device of the smart toilet), in order to avoid the sudden water outage of the water supply source (such as the tap water network), which leads to negative pressure in the water supply pipeline, and then causes the formation of negative pressure siphon in the water supply pipeline, causing the external fluid to flow back and pollute the water supply pipeline, some existing technologies adopt the method of setting an air partition on the water supply pipeline. The water flow upstream of the air partition relies on water pressure to spray through the air partition and then flows into the water channel downstream of the air partition. Due to the setting of the air partition, the water supply pipeline is always connected to the outside air. Therefore, even if negative pressure occurs in the water supply pipeline, siphon backflow will not be formed, effectively eliminating the problem of siphon backflow polluting the water supply pipeline.

[0003] Since an air partition is provided in the water supply pipeline, the pressure and flow of the water will be greatly reduced after the water flows through the air partition, and a lot of water is prone to leakage at the air partition. In some cases, it is necessary to set up an additional structure to drain the leaked water, which is a relatively complicated structure. Summary of the Invention

[0004] The purpose of the present invention is to provide an anti-siphon assembly, a drainage device and a toilet device.

[0005] The present invention aims to solve the problem that the existing technology adopts an air partition design, which is prone to large water leakage from the air partition, thereby causing large water pressure and flow losses.

[0006] Compared with the prior art, the technical solution of the present invention and its beneficial effects are as follows:

[0007] An anti-siphon component comprises: a water inlet pipe; a water outlet pipe, wherein water in the water inlet pipe flows into the water outlet pipe under the action of the inlet water pressure; when the water inlet pipe is in a water-stopped 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-inflowing state, a movable part moves under the action of a driving force and at least partially closes the air partition to prevent or reduce the water in the water inlet pipe from flowing out of the air partition; or, when the water inlet pipe is in a water-inflowing state, 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.

[0008] As a further improvement, the movable part is a water-blocking element, which moves axially or circumferentially along the water inlet pipe under the water pressure of the water inlet pipe or under the drive of the first drive mechanism to at least partially close the air partition; after the water inlet pipe stops inflowing water, the water-blocking element resets and opens the air partition.

[0009] As a further improvement, the water retaining element is reset under the elastic force of the first elastic member or the magnetic force of the magnetic member or its own gravity.

[0010] As a further improvement, the water-blocking element is a water pipe, which is telescopically matched with the water inlet pipe. The water pipe extends relative to the water inlet pipe under the water pressure of the water inlet pipe or driven by the first driving mechanism and abuts the water inlet end of the water outlet pipe to completely close the air partition. Alternatively, the water pipe extends relative to the water inlet pipe under the water pressure of the water inlet pipe or driven by 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 inleting water, the water pipe resets to the position retracted into the water inlet pipe to open the air partition.

[0011] As a further improvement, an annular flange protruding in the radial direction of the water conduit is provided on the outer wall of the water conduit, and the annular flange cooperates with the inner wall of the water inlet pipe.

[0012] As a further improvement, the invention further comprises a first elastic member for driving the water conduit to reset, wherein the first elastic member is elastically pressed between the annular flange of the water conduit and the inner wall of the water outlet end of the water inlet pipe.

[0013] As a further improvement, a sealing ring is provided between the outer wall of the water guide pipe and the inner wall of the water inlet pipe, and the sealing ring is installed at the annular flange.

[0014] As a further improvement, an end face sealing fit is formed between the end face of the water outlet end of the water pipe and the end face of the water inlet end of the water outlet pipe, so that when the water pipe is extended into place, the water outlet end of the water pipe and the water inlet end of the water outlet pipe are sealed and connected; or, a sealing fit is formed between the peripheral surface of the water outlet end of the water pipe and the peripheral surface of the water inlet end of the water outlet pipe, so that when the water pipe is extended into place, the water outlet end of the water pipe and the water inlet end of the water outlet pipe are sealed and connected.

[0015] As a further improvement, the water inlet end face of the water pipe forms a water baffle, and the water inlet of the water pipe is opened on the side wall of the water pipe near the water inlet end face of the water pipe; or, the water inlet of the water pipe is axially arranged at the water inlet end of the water pipe.

[0016] As a further improvement, it also includes a first elastic member for driving the water pipe to reset, a one-way plug and a second elastic member are provided in the water pipe, the second elastic member enables the one-way plug to close the water inlet of the water pipe, and the elastic force of the first elastic member is smaller than the elastic force of the second elastic member.

[0017] As a further improvement, the first driving mechanism adopts an electric driving mechanism or a mechanical driving mechanism, and the electric driving mechanism includes: a motor; a gear, the gear is connected to the output end of the motor; and a rack, the rack cooperates with the gear, and the rack is arranged on the outside of the water pipe; wherein, the motor drives the water pipe and the water inlet pipe to telescopically cooperate through the cooperation of the gear and the rack.

[0018] As a further improvement, the water inlet pipe moves toward the water outlet pipe under the action of the water pressure of the water inlet pipe or the action of the second driving mechanism; and / or the water outlet pipe moves toward the water inlet pipe under the action of the second driving mechanism.

[0019] As a further improvement, the second driving mechanism adopts a fluid driving mechanism, which includes a piston rod, which is transmission-connected to the water inlet pipe or the water outlet pipe. Under the action of fluid pressure, the piston rod drives the water inlet pipe to move closer to the water outlet pipe, or, under the action of fluid pressure, the piston rod drives the water outlet pipe to move closer to the water inlet pipe, so as to shorten or eliminate the air partition.

[0020] As a further improvement, it also includes a fixed pipe, 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 to the inner wall of the fixed pipe by a threaded connection or a riveted connection, and the second driving mechanism drives the water inlet pipe or the water outlet pipe to rotate to connect with the fixed pipe, so that the water inlet pipe or the water outlet pipe can be expanded and contracted relative to the fixed pipe.

[0021] As a further improvement, the length of the air partition is ≥20 mm; the water outlet end of the water inlet pipe and the water inlet end of the water outlet pipe are positioned correspondingly.

[0022] As a further improvement, it further includes a water flow sensor provided in the water inlet pipe or in the water channel upstream of the water inlet pipe, and the sensing signal of the water flow sensor is used to control the opening and closing of the first driving mechanism or the second driving mechanism.

[0023] A drainage device for a toilet tank includes a hydraulic drive device, wherein the hydraulic drive device includes an anti-siphon assembly as described in any one of the above items.

[0024] A toilet device includes a human body cleaning device, wherein the human body cleaning device includes an anti-siphon component as described in any one of the above items.

[0025] The beneficial effects of the present invention are:

[0026] By setting up this anti-siphon component, when the water inlet pipe is not flowing with water (that is, when the water inlet pipe is in a water-stopped state), the movable part opens the air partition, thereby allowing the fluid passage composed of the water inlet pipe and the water outlet pipe to communicate with the outside air, which can effectively prevent the siphon backflow phenomenon of the fluid passage; when the water inlet pipe is flowing with water, 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 outlet pipe are relatively close, so that not much water will leak out at the air partition, and thus will not cause a large pressure and flow loss of the water flow, thereby ensuring the cleaning effect, and the leaked water flow will not affect other components, and no large space is needed to design a drainage structure for draining the leaked water flow, thereby saving space. The present invention has a simple structure and a wide range of applicability.

[0027] The movable part is a water-blocking element, which moves along the axial direction of the water inlet pipe under the water pressure of the water inlet pipe or under the drive of the first driving mechanism to at least partially close the air partition. The water-blocking element adopts a water guide pipe, which is telescopically matched with the water inlet pipe. This design structure is simple, and the impact on the flow rate and pressure of the water flow is very small or even negligible, and the effect is better.

[0028] By arranging a one-way plug in the water pipe that can close the water inlet of the water pipe, and the elastic force of the first elastic member is smaller than the elastic force of the second elastic member, it can be ensured that the water pipe is first extended into place and then the water inlet of the water pipe is opened to let water in, thereby avoiding the situation where water leaks from the water pipe before the water pipe is extended into place when the water inlet pipe starts to take in water, and the effect of preventing water leakage is better; in addition, under the condition of low water pressure, the water pipe can be ensured to be extended into place.

[0029] The movable part is driven by a first driving mechanism including a motor and a rack gear, so that the distance of the air partition is controllable and the switching efficiency is high.

[0030] The water inlet pipe moves toward the water outlet pipe under the action of the water pressure of the water inlet pipe or the action of the second driving mechanism; and / or, the water outlet pipe moves toward the water inlet pipe under the action of the second driving mechanism, with a simple structure and reliable function.

[0031] The second driving mechanism adopts a fluid driving mechanism, which includes a piston rod, and the piston rod is transmission-connected to the water inlet pipe or the water outlet pipe. The use of the fluid driving mechanism can improve the switching efficiency of the air partition, has a simple structure, and is reliable in control. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the three-dimensional structure provided by the first embodiment of the present invention.

[0033] Figure 2 This is a structural cross-sectional view of the anti-siphon assembly provided in the first embodiment of the present invention in a water-out state.

[0034] Figure 3 This is a structural cross-sectional view of the anti-siphon assembly provided in the first embodiment of the present invention in a water-filled state.

[0035] Figure 4 It is a structural schematic diagram of the water pipe provided in Example 1 of the present invention.

[0036] Figure 5 This is a structural cross-sectional view of the anti-siphon assembly provided in the second embodiment of the present invention in a water-stop state.

[0037] Figure 6 This is a structural cross-sectional view of the anti-siphon assembly provided in the second embodiment of the present invention in a water-filled state.

[0038] Figure 7 This is a structural cross-sectional view of the anti-siphon assembly provided in the third embodiment of the present invention in a water-stop state.

[0039] Figure 8 This is a structural cross-sectional view of the anti-siphon assembly provided in the third embodiment of the present invention in a water-filled state.

[0040] Figure 9 This is a structural cross-sectional view of the anti-siphon assembly provided in the fourth embodiment of the present invention in a water-stop state.

[0041] Figure 10 This is a structural cross-sectional view of the anti-siphon assembly provided in the fifth embodiment of the present invention in a water-out state.

[0042] Figure 11 It is a schematic diagram of the three-dimensional structure of the anti-siphon component provided in Example 6 of the present invention.

[0043] Figure 12 This is a cross-sectional view of the anti-siphon component structure provided in Example 6 of the present invention.

[0044] Figure 13 This is a structural cross-sectional view of the anti-siphon assembly provided in Example 7 of the present invention in a water-filled state.

[0045] Figure 14 It is a schematic diagram of the structure of the anti-siphon component provided in Example 9 of the present invention.

[0046] Figure 15 This is a cross-sectional view of the first structure of the anti-siphon assembly provided in Example 9 of the present invention.

[0047] Figure 16This is a cross-sectional view of the second structure of the anti-siphon assembly provided in Example 9 of the present invention.

[0048] Figure 17 This is a cross-sectional view of the anti-siphon component structure provided in Example 10 of the present invention.

[0049] Figure 18 This is an exploded sectional view of the anti-siphon component structure provided in Example 11 of the present invention.

[0050] Figure 19 This is a structural exploded view of the anti-siphon assembly provided in Example 11 of the present invention.

[0051] Figure 20 This is a structural cross-sectional view of the anti-siphon assembly provided in the eleventh embodiment of the present invention in a water-out state.

[0052] Figure 21 This is a schematic diagram of the anti-siphon assembly provided in the twelfth embodiment of the present invention in a water outage state.

[0053] Figure 22 This is a schematic diagram of the anti-siphon assembly provided in the twelfth embodiment of the present invention in a water-filled state.

[0054] Figure 23 This is a schematic diagram of the drainage device provided in the thirteenth embodiment of the present invention in the water-out state.

[0055] Figure 24 This is a schematic diagram of the drainage device provided in the thirteenth embodiment of the present invention in the water-filled state.

[0056] Figure 25 It is a partial structural diagram of a toilet device provided in Example 14 of the present invention.

[0057] Figure 26 It is a schematic diagram of the partial structure of the toilet device provided in the fifteenth embodiment of the present invention.

[0058] In the picture: 1. Water inlet pipe 2. Water outlet pipe 3. Air partition

[0059] 31. Water retaining wall 311. First wall 312. Second wall

[0060] 4. Water pipe 41. Water retaining plate 42. Water inlet

[0061] 43. Annular flange 5. First elastic member 6. Sealing ring

[0062] 7. Sealing element 8. Second elastic element 9. One-way plug

[0063] 10. Connector 11. Fixing bracket 12. Conical surface

[0064] 13. Water inlet chamber 14. Motor 15. Gear

[0065] 16. Rack 17. Piston rod 18. Fixed tube

[0066] 19. Screw thread 20. Transmission rod 21. Hydraulic start lever

[0067] 22. Solenoid valve 23. Directional valve 24. Water spray assembly

[0068] 25. Water inlet hose 26. Regulating valve A: Anti-siphon assembly

[0069] d: Length of the air partition DETAILED DESCRIPTION

[0070] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention for which protection is sought, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0071] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0072] Example 1

[0073] Reference Figures 1 to 4 As shown, an anti-siphon assembly includes: a water inlet pipe 1; a water outlet pipe 2, wherein water in the water inlet pipe 1 flows into the water outlet pipe 2 under the action of the inlet water pressure; when the water inlet pipe 1 is in a water-stopped 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; when the water inlet pipe 1 is in a water-inflowing state, a movable part moves under the action of a driving force and at least partially closes the air partition 3 to prevent or reduce the water in the water inlet pipe 1 from flowing out of the air partition 3.

[0074] The movable part is a water-blocking element, which moves axially or circumferentially along the water inlet pipe 1 under the water pressure of the water inlet pipe 1 or under the drive of the first driving mechanism to at least partially close the air partition 3; after the water inlet pipe 1 stops inflowing water, the water-blocking element resets and opens the air partition 3.

[0075] The water-blocking element is a water pipe 4, which is telescopically matched with the water inlet pipe 1. The water pipe 4 extends relative to the water inlet pipe 1 under the water pressure of the water inlet pipe 1 or driven by the first driving mechanism and abuts the water inlet end of the water outlet pipe 2 to completely close the air partition 3. Alternatively, the water pipe 4 extends relative to the water inlet pipe 1 under the water pressure of the water inlet pipe 1 or driven by the first driving mechanism and has a certain gap with the water inlet end of the water outlet pipe 2 to partially close the air partition 3; after the water inlet pipe 1 stops inleting water, the water pipe 4 resets to the position retracted into the water inlet pipe 1 to open the air partition 3.

[0076] The water retaining element is designed as the water guide pipe 4, and the water guide pipe 4 and the water inlet pipe 1 are telescopically matched. The advantage is that the impact on the flow rate and pressure of the water flow is very small or even negligible, the effect is better, and the structure is simpler.

[0077] Specifically, in this embodiment, the water conduit 4 moves along the axial direction of the water inlet pipe 1 under the water pressure of the water inlet pipe 1 to at least partially close the air partition 3 .

[0078] The length d of the air partition 3 is ≥ 20 mm.

[0079] Reference Figures 2 to 3 As shown, the water outlet end of the water inlet pipe 1 and the water inlet end of the water outlet pipe 2 are located in corresponding positions. Preferably, the water guide pipe 4 is a straight pipe.

[0080] This embodiment also provides a first elastic member 5. The water pipe 4 is reset under the elastic force of the first elastic member 5. The first elastic member 5 is elastically pressed between the annular flange 43 of the water pipe 4 and the inner wall of the water outlet end of the water inlet pipe 1. The annular flange 43 is described in detail below. In other embodiments, the water pipe 4 can also be reset by the magnetic force of a magnetic member (not shown) or the self-weight of the water pipe 4. The use of the first elastic member 5 to apply the reset force to the water pipe 4 makes the reset of the water pipe 4 more reliable and the structure simpler. When a magnetic member is used to provide the reset force of the water pipe 4, a magnetic member can be provided on the water pipe 4 and another magnetic member can be provided on the water inlet pipe 1. The water pipe 4 is reset by the magnetic cooperation of the two magnetic members.

[0081] Reference Figures 2 to 3As shown, an annular flange 43 protruding radially along the water pipe 4 is provided on the outer wall of the water pipe 4, and the annular flange 43 cooperates with the inner wall of the water inlet pipe 1. In this way, a water inlet cavity 13 is formed between the water pipe 4 and the inner wall of the water inlet pipe 1, thereby helping to use the water pressure of the water inlet cavity 13 to push the water pipe 4 out.

[0082] Reference Figure 2 As shown, a sealing ring 6 is provided between the outer wall of the water conduit 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 from flowing out of the water conduit 4.

[0083] Reference Figure 2 As shown, a sealing member 7 is provided between the end face of the water outlet end of the water pipe 4 and the end face of the water inlet end of the water outlet pipe 2. The sealing member 7 forms an end face sealing fit between the end face of the water outlet end of the water pipe 4 and the end face of the water inlet end of the water outlet pipe 2, so that when the water pipe 4 is extended into place, the water outlet end of the water pipe 4 and the water inlet end of the water outlet pipe 2 are sealed and connected, which can further prevent water leakage.

[0084] Reference Figure 4 As shown, a water retaining plate 41 is formed on the water inlet end face of the water pipe 4, and a water inlet 42 of the water pipe 4 is opened on the side wall of the water pipe 4 near the water inlet end face of the water pipe 4;

[0085] Reference Figures 1 to 2 As shown, the water inlet pipe 1 and the water outlet pipe 2 are connected by a connector 10 , and the connector 10 is located between the air partitions 3 .

[0086] Of course, in addition to being driven by the water pressure from the water inlet pipe 1, the water conduit 4 can also be driven by a first drive mechanism (not shown). The first drive mechanism can be an electric drive mechanism or a mechanical drive mechanism. The electric drive mechanism may include: a motor; a gear connected to the output end of the motor; and a rack mated with the gear, the rack being disposed on the outside of the water conduit 4. The motor drives the water conduit to telescopically engage with the water inlet pipe 1 through the mating of the gear and the rack. The rack can be integrally formed with the water conduit 4. Using a motor to drive the water conduit 4 provides a simple structure and reliable drive.

[0087] Example 2

[0088] Reference Figures 5 and 6 As shown, the difference between this embodiment and embodiment one is that embodiment one adopts: an end face sealing fit is formed between the end face of the water outlet end of the water pipe 4 and the end face of the water inlet end of the water outlet pipe 2, while this embodiment adopts: a sealing fit is formed between the peripheral surface of the water outlet end of the water pipe 4 and the peripheral surface of the water inlet end of the water outlet pipe 2, so that when the water pipe 4 is extended into place, the water outlet end of the water pipe 4 and the water inlet end of the water outlet pipe 2 are sealed and connected.

[0089] Specifically, the water outlet end of the water conduit 4 and the water inlet end of the water outlet pipe 2 are matched via a tapered surface 12, so that when the water conduit 4 is fully extended, the water outlet end of the water conduit 4 and the water inlet end of the water outlet pipe 2 are connected. Compared with the first embodiment, one sealing member 7 can be omitted. In other embodiments, the tapered surface 12 can also be replaced by a spherical surface.

[0090] Example 3

[0091] Reference Figures 7 and 8 As shown, the difference between this embodiment and embodiment 1 is that a one-way plug 9 and a second elastic member 8 are provided in the water pipe 4, and the second elastic member 8 enables the one-way plug 9 to close the water inlet 42 of the water pipe 4. The elastic force of the first elastic member 5 is less than the elastic force of the second elastic member 8, so that the water pressure of the water inlet pipe 1 can first overcome the elastic force of the first elastic member 5, so that the water pipe 4 is extended first, and then overcome the elastic force of the second elastic member 8 to open the water inlet 42 of the water pipe 4.

[0092] Compared with the first embodiment, a one-way plug 9 is provided in the water pipe 4, and the elastic force of the first elastic member 5 is smaller than the elastic force of the second elastic member 8. The one-way plug 9 is in a closed state under the action of the second elastic member 8 when water is initially flowing into the water inlet pipe 1, so that the water pressure of the incoming water first overcomes the elastic force of the first elastic member 5 so that the water pipe 4 extends first. After the water pipe 4 extends, the water pressure overcomes the elastic force of the second elastic member 8 to open the one-way plug 9, ensuring that the water pipe 4 is first extended into place and then the water inlet 42 of the water pipe 4 is opened to allow water to flow in, thereby avoiding the situation where water leaks from the water pipe 4 before the water pipe 4 is extended into place when the water inlet pipe 1 starts to flow in, and the effect of preventing water leakage is better. In addition, under the condition of low water pressure, the water pipe 4 can be ensured to be extended into place, the requirement for the incoming water pressure is lower, and the scope of application is wider.

[0093] Example 4

[0094] Reference Figure 9 As shown, this embodiment differs from the first embodiment in that the water inlet 42 of the water conduit 4 is axially located at the water inlet end of the water conduit 4. Compared to the first embodiment, this embodiment omits the water retaining plate 41, and the water inlet 42 of the water conduit 4 is axially opened. In addition, this embodiment also omits the seal 7.

[0095] Example 5

[0096] Reference Figure 10As shown, the difference between this embodiment and the fourth embodiment is that a water retaining wall 31 is provided at the air partition 3, and the water retaining 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, and the second wall 312 divides the air partition 3 into two sections. One side of the first wall 311 is connected to the water inlet pipe 1, and the other side is connected to the second wall 312. The outlet end wall of the water inlet pipe 1, the first wall 311, and the second wall 312 form a cavity with an open bottom. The second wall 312 is provided with a perforation for the water pipe 4 to pass through. The water retaining wall 31 can block the water flow that sprays upward when the water pipe 4 is first extended.

[0097] Example 6

[0098] Reference Figures 11 to 12 As shown, the difference between this embodiment and the first embodiment is that the connecting member 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 via a fixing frame 11 .

[0099] Example 7

[0100] Reference Figure 13 As shown, the main difference between this embodiment and the above embodiments is that in the above embodiments 1 to 6, the water retaining element completely closes the air partition 3 under the action of the incoming water pressure, while in this embodiment, the water retaining element only partially closes the air partition 3 under the action of the incoming water pressure.

[0101] Specifically, in this embodiment, the water pipe 4 extends relative to the water inlet pipe 1 under the water pressure of the water inlet pipe 1 and has a certain gap L with the water inlet end of the water outlet pipe 2 (such as Figure 13 As shown in FIG. 1 , the air partition 3 is partially closed, thereby reducing the amount of water flowing out of the water inlet pipe 1 through the air partition 3. In this embodiment, the gap L is set to 5 mm.

[0102] Embodiment 8 (not shown)

[0103] The present embodiment differs from the above-mentioned embodiments in that the water retaining element can also slide back and forth along the circumferential direction of the water inlet pipe 1 to open or close the air partition 3. Specifically, the water retaining element can be flexibly and movably provided on the connecting member 10, and the water retaining element can be configured as an arc-shaped baffle structure. Under the action of the inlet water pressure of the water inlet pipe 1, the water retaining element slides and retracts relative to the connecting member 10 along the circumferential direction of the water inlet pipe 1 to close the air partition 3.

[0104] Embodiment 9

[0105] Reference Figures 14 to 16As shown, the main difference between this embodiment and the above embodiments is that the above embodiments all use a movable part (water-blocking element) to open or close the air partition 3. However, this embodiment adopts a solution where, when water is flowing into the water inlet pipe 1, the outlet end of the water inlet pipe 1 and the inlet end of the water outlet pipe 2 are relatively close to each other to shorten or eliminate the air partition 3.

[0106] Specifically, the water inlet pipe 1 may move toward the water outlet pipe 2 under the action of the water pressure of the water inlet pipe 1 or the action of the second driving mechanism; and / or the water outlet pipe 2 may move toward the water inlet pipe 1 under the action of the second driving mechanism.

[0107] In this embodiment, the water inlet pipe 1 is moved toward the water outlet pipe 2 under the action of a second drive mechanism. The second drive mechanism is an electric drive mechanism, which includes: a motor 14; a gear 15 connected to the output end of the motor 14; and a rack 16 that cooperates with the gear 15 and is disposed on the outside of the water inlet pipe 1. In this embodiment, the rack 16 and the water inlet pipe 1 are integrally formed. The motor 14 drives the water inlet pipe 1 toward or away from the water outlet pipe 2 through the cooperation of the gear 15 and the rack 16.

[0108] Example 10

[0109] Reference Figure 17 As shown, the main difference between this embodiment and embodiment nine is that the second driving mechanism adopts a mechanical structure. Specifically, a transmission rod 20 is used to replace the motor 14 and cooperate with the gear 15. One end of the transmission rod 20 drives the water inlet pipe 1 to move through the gear 15 and the rack 16. The other end of the transmission rod 20 can be coordinated with a mechanical button or a mechanical handle. The mechanical press or mechanical handle can serve as the water inlet switch of the water inlet pipe 1. When the water inlet switch is turned on, the water inlet pipe 1 extends, and when the water inlet switch is closed, the water inlet pipe 1 retracts.

[0110] Example 11

[0111] Reference Figures 18 to 20 As shown, the main difference between this embodiment and embodiment nine and embodiment ten is that the second driving mechanism of embodiment nine and embodiment ten uses a motor 14, a gear 15 and a rack 16 to drive the water inlet pipe 1, while the second driving mechanism of this embodiment uses a threaded drive.

[0112] Specifically, this embodiment further includes a fixed pipe 18, which is fixedly connected to the outlet pipe 2 via a connector 10. The fixed pipe 18 is sleeved onto the outside of the water inlet pipe 1, and the water inlet pipe 1 and the inner wall of the fixed pipe 18 are connected via a threaded connection or rifling. In this embodiment, the water inlet pipe 1 and the fixed pipe 18 are connected via a threaded connection. The second drive mechanism rotates the water inlet pipe 1 to connect with the fixed pipe 18, thereby allowing the water inlet pipe 1 to extend or retract relative to the fixed pipe 18 to move closer to or away from the outlet pipe 2.

[0113] The inner wall of the fixed pipe 18 is provided with a threaded section, and the outer side of the water inlet pipe 1 is provided with a threaded section 19 that cooperates with the threaded section. When the second driving mechanism rotates the water inlet pipe 1, the water inlet pipe 1 performs telescopic movement relative to the fixed pipe 18.

[0114] Example 12

[0115] Reference Figures 21 to 22 As shown, the main difference between this embodiment and the above-mentioned embodiments 9 to 11 is that the second driving mechanism of embodiments 9 to 11 adopts an electric driving mechanism or a mechanical driving mechanism, while the second driving mechanism of this embodiment adopts a fluid driving mechanism.

[0116] Specifically, the fluid drive mechanism includes a piston rod 17, which is drivingly connected to the water inlet pipe 1 or the water outlet pipe 2. Under the action of fluid pressure, the piston rod 17 drives the water inlet pipe 1 toward the water outlet pipe 2, or drives the water outlet pipe 2 toward the water inlet pipe 1, thereby shortening or eliminating the air barrier 3. The fluid can be a liquid or a gas, and the fluid can be supplied by a water pump or an air pump.

[0117] The piston rod 17 of this embodiment is fixedly connected to the water inlet pipe 1 through threads, and the piston rod 17 drives the water inlet pipe 1 to move closer to or away from the water outlet pipe 2.

[0118] Example 13

[0119] The present invention also provides a drainage device for a toilet tank, comprising a hydraulic drive device, wherein the hydraulic drive device comprises an anti-siphon assembly as described in any one of the above items.

[0120] Reference Figures 23 to 24 As shown, the anti-siphon component A is arranged on the water path of the hydraulic drive device of the drainage device of the toilet water tank. The solenoid valve 22 controls the opening and closing of the water path, thereby controlling the water inlet or water stop of the water inlet pipe 1. The water flowing out of the outlet pipe 2 of the anti-siphon component A reaches the hydraulic starting rod 21 of the hydraulic drive device, driving the hydraulic starting rod 21 to extend downward, thereby actuating the drainage device (drain valve) to start drainage.

[0121] Example 14

[0122] Reference Figure 25 As shown, this embodiment also provides a toilet device, including a human body cleaning device, wherein the human body cleaning device includes an anti-siphon assembly A as described in any of the above. The anti-siphon assembly A is disposed in the water path of the human body cleaning device on the base of the toilet cover. The anti-siphon assembly A is connected between the reversing valve 23 and the water spray assembly 24 via a water inlet hose 25.

[0123] Example 15

[0124] Reference Figure 26 As shown, the main difference between this embodiment and the above-mentioned embodiment fourteen is that the anti-siphon component A is arranged in the water path of the human body cleaning device on the toilet seat, and the anti-siphon component A is connected between the regulating valve 26 and the water spray component 24 through the water inlet hose 25.

[0125] It is worth mentioning that in the above-mentioned embodiments adopting the first driving mechanism or the second driving mechanism, a water flow sensor (not shown) provided in the water inlet pipe 1 or the water channel upstream of the water inlet pipe 1 may also be included. The sensing signal of the water flow sensor is used to control the opening and closing of the first driving mechanism or the second driving mechanism, thereby driving the movable part or driving the water inlet pipe or driving the water outlet pipe.

[0126] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Those skilled in the art should understand that any modifications and equivalent substitutions that do not depart from the spirit and scope of the present invention should fall within the scope of protection of the claims of the present invention.

Claims

1. An anti-siphon assembly, characterized in that: include: water inlet pipe; a water outlet pipe, into which the water in the water inlet pipe flows under the action of the inlet water pressure; When the water inlet pipe is in a water-stop 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-inflowing state, a movable member moves under the action of a driving force and at least partially closes the air partition to prevent or reduce the water in the water inlet pipe from flowing out of the air partition; or, when the water inlet pipe is in a water-inflowing state, 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; The movable member is a water-blocking element, which moves along the axial direction of the water inlet pipe under the water pressure of the water inlet pipe or driven by the first driving mechanism to at least partially close the air partition; After the water inlet pipe stops inflowing water, the water blocking element is reset and the air partition is opened.

2. The anti-siphon assembly according to claim 1, characterized in that: The water retaining element is reset under the action of the elastic force of the first elastic element or the magnetic attraction of the magnetic element or its own gravity.

3. The anti-siphon assembly according to claim 2, characterized in that: The water-blocking element is a water guide pipe, which is telescopically matched with the water inlet pipe. Under the water pressure of the water inlet pipe or driven by the first driving mechanism, the water guide pipe extends relative to the water inlet pipe and abuts against the water inlet end of the water outlet pipe to completely close the air partition. Alternatively, under the water pressure of the water inlet pipe or driven by the first driving mechanism, the water guide pipe extends relative to the water inlet pipe 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 inletting water, the water guide pipe is reset to a position retracted into the water inlet pipe to open the air partition.

4. The anti-siphon assembly according to claim 3, characterized in that: An annular flange protruding along the radial direction of the water conduit is provided on the outer wall of the water conduit, and the annular flange is matched with the inner wall of the water inlet pipe.

5. The anti-siphon assembly according to claim 4, characterized in that: It also includes a first elastic member for driving the water pipe to reset, and the first elastic member is elastically pressed between the annular flange of the water pipe and the inner wall of the water outlet end of the water inlet pipe.

6. The anti-siphon assembly according to claim 4, characterized in that: A sealing ring is provided between the outer wall of the water guide pipe and the inner wall of the water inlet pipe, and the sealing ring is installed at the annular flange.

7. The anti-siphon assembly according to claim 3, characterized in that: An end face seal is formed between the end face of the water outlet end of the water pipe and the end face of the water inlet end of the water outlet pipe, so that when the water pipe is extended into place, the water outlet end of the water pipe and the water inlet end of the water outlet pipe are sealed and connected; or, a seal is formed between the peripheral surface of the water outlet end of the water pipe and the peripheral surface of the water inlet end of the water outlet pipe, so that when the water pipe is extended into place, the water outlet end of the water pipe and the water inlet end of the water outlet pipe are sealed and connected.

8. The anti-siphon assembly according to claim 3, characterized in that: The water inlet end face of the water pipe forms a water retaining plate, and the water inlet of the water pipe is opened on the side wall of the water pipe close to the water inlet end face of the water pipe; or, the water inlet of the water pipe is axially arranged at the water inlet end of the water pipe.

9. The anti-siphon assembly according to claim 3, characterized in that: It also includes a first elastic member for driving the water pipe to reset. A one-way plug and a second elastic member are provided in the water pipe. The second elastic member enables the one-way plug to close the water inlet of the water pipe. The elastic force of the first elastic member is smaller than the elastic force of the second elastic member.

10. The anti-siphon assembly according to claim 3, characterized in that: The first driving mechanism is an electric driving mechanism or a mechanical driving mechanism, and the electric driving mechanism includes: Motor; a gear connected to an output end of the motor; a rack, the rack being matched with the gear and being arranged on the outside of the water pipe; Wherein, the motor drives the water pipe and the water inlet pipe to cooperate with each other through the cooperation of the gear and the rack.

11. The anti-siphon assembly according to claim 1, characterized in that: The water inlet pipe moves toward the water outlet pipe under the action of the water pressure of the water inlet pipe or the action of the second driving mechanism; and / or the water outlet pipe moves toward the water inlet pipe under the action of the second driving mechanism.

12. The anti-siphon assembly according to claim 11, characterized in that: The second driving mechanism adopts a fluid driving mechanism, which includes a piston rod. The piston rod is transmission-connected to the water inlet pipe or the water outlet pipe. Under the action of fluid pressure, the piston rod drives the water inlet pipe to move toward the water outlet pipe, or, under the action of fluid pressure, the piston rod drives the water outlet pipe to move toward the water inlet pipe to shorten or eliminate the air partition.

13. The anti-siphon assembly according to claim 11, characterized in that: It also includes a fixed pipe, 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 to the inner wall of the fixed pipe by a threaded connection or a riveted connection, and the second driving mechanism drives the water inlet pipe or the water outlet pipe to rotate to connect with the fixed pipe, thereby making the water inlet pipe or the water outlet pipe expand and contract relative to the fixed pipe.

14. An anti-siphon assembly according to any one of claims 1 to 13, characterized 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.

15. An anti-siphon assembly according to claim 1 or 11, characterized in that: It also includes a water flow sensor provided in the water inlet pipe or the water channel upstream of the water inlet pipe, and the sensing signal of the water flow sensor is used to control the opening and closing of the first driving mechanism or the second driving mechanism.

16. A drainage device for a toilet tank, comprising a hydraulic drive device, characterized in that: The hydraulic drive device includes an anti-siphon assembly according to any one of claims 1 to 15.

17. A toilet device, comprising a human body cleaning device, characterized in that: The human body washing device comprises an anti-siphon component according to any one of claims 1 to 15.

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