Anti-siphon structure and sanitary ware applying the same

Abstract

The utility model discloses a kind of anti-siphon structures, and disclosed with the sanitary ware of anti-siphon structure, wherein anti-siphon structure, including: the inside of pipe fitting is equipped with water passage;Sealing element's periphery has skirt edge portion that can be elastically swung in thickness direction;Support piece is intercepted on the water passage of water passage, and support piece is equipped with several water passing holes from the upstream side of support piece to downstream side, sealing element is installed on support piece and each water passing hole downstream side is blocked, water passing hole is opposite with skirt edge position, skirt edge portion can be elastically swung to leave water passing hole when being impacted by water power of water passing hole;Overall structure is simple, reduce material cost and assembly complexity, skirt edge portion does not contact with the inner wall of pipe fitting and other structures in the process of elastic swing, improve the reliability and life of structure, avoid the risk of abrasion and jam.

Description

Technical Field

[0001] This utility model relates to the field of anti-siphon device technology, and in particular to an anti-siphon structure and sanitary ware using the same. Background Technology

[0002] Traditional sanitary ware, such as squat toilets and urinals, has a flushing pipe connected to the toilet chamber. This can cause sewage and odors from the toilet chamber to backflow into the flushing pipe, leading to water contamination and foul odors. Some modern sanitary ware incorporates anti-siphon devices in the flushing pipe. These devices typically utilize components such as a diaphragm with sealing holes, a diaphragm support with air holes, a corrugated telescopic sleeve, a venting bracket, and a return spring. With numerous internal moving parts, they have poor resistance to contamination and are prone to malfunction due to jamming or poor sealing. Furthermore, this structure is relatively complex, costly, and space-consuming. Utility Model Content

[0003] This invention aims to at least partially solve one of the aforementioned technical problems in related technologies. To this end, this invention proposes an anti-siphon structure.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] This utility model also proposes a sanitary ware with the above-mentioned anti-siphon structure.

[0006] The anti-siphon structure according to a first aspect embodiment of the present invention includes:

[0007] Pipe fitting, wherein the pipe fitting has a water flow channel inside;

[0008] A seal having a skirt portion around its periphery capable of elastically swinging in the thickness direction;

[0009] A support member is provided, which intercepts the water flow path of the water passage. The support member is provided with a plurality of water passage holes extending from the upstream side of the support member to the downstream side. A sealing member is installed on the support member and blocks the downstream port of each water passage hole. The water passage hole is positioned opposite to the skirt. When the skirt is subjected to the water force impact of the water passage hole, it can elastically swing away from the water passage hole.

[0010] The anti-siphon structure according to the embodiments of this utility model has at least the following beneficial effects: the overall structure is simple, reducing material costs and assembly complexity; the skirt will not come into contact with the inner wall of the pipe or other structures during the elastic swing process, improving the reliability and life of the structure and avoiding the risk of wear and jamming.

[0011] According to some embodiments of the present invention, the downstream side of the support member and the side skirt are positioned opposite each other as an inclined surface. The inclined surface is inclined in a direction away from the center of the support member and towards the upstream side of the support member, and the side skirt is positioned along the inclined direction of the inclined surface.

[0012] According to some embodiments of the present invention, the sealing member further includes a fixing part, the skirt part is arranged circumferentially along the fixing part, and the fixing part is connected to the support member.

[0013] According to some embodiments of the present invention, the fixing part and the skirt part are integrally formed, and the thickness of the fixing part is greater than the thickness of the skirt part.

[0014] According to some embodiments of the present invention, the thickness of the junction between the skirt portion and the fixing portion gradually decreases in the direction away from the fixing portion.

[0015] According to some embodiments of the present invention, the support member has a mounting hole at its center, the fixing part extends a connecting shaft from its center, the connecting shaft has a radially protruding locking protrusion, the connecting shaft passes through the mounting hole, and the locking protrusion engages with the port of the mounting hole located on the upstream side of the support member.

[0016] According to some embodiments of the present invention, a recessed platform is provided at the middle of the downstream side of the support member, and a protrusion protruding toward the recessed platform is provided at the middle of the fixing part, the protrusion abutting against the recessed platform.

[0017] According to some embodiments of the present invention, the pipe fitting includes a first connector and a second connector. The inner wall of the first connector is provided with a step. The support member is placed in the first connector and its upstream side abuts against the step. The second connector is inserted into the first connector and abuts against the downstream side of the support member.

[0018] According to some embodiments of the present invention, a sealing ring is sleeved on the circumferential outer wall of the support member, and the sealing ring abuts against the inner wall of the first connecting pipe.

[0019] A sanitary ware according to a second aspect of the present invention includes a flushing valve and an anti-siphon structure, wherein the flushing valve is mounted on a pipe and located upstream of the support member.

[0020] The sanitary ware according to the embodiments of this utility model has at least the following beneficial effects: by using the anti-siphon structure to completely block the passage between the toilet chamber and the upstream clean water source, the risk of odor overflow and water overflow is fundamentally eliminated.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of the internal structure of the anti-siphon structure;

[0024] Figure 2 yes Figure 1 Another usage status diagram;

[0025] Figure 3 This is a structural schematic diagram of the sealing element;

[0026] Figure 4 This is a structural schematic diagram of the support component;

[0027] Figure 5 This is a sectional view of the support component;

[0028] Figure 6 This is a partial structural cross-sectional view of a sanitary ware unit.

[0029] Reference numerals: Pipe fitting 100; Water passage 101; First connecting pipe 110; Step 111; Second connecting pipe 120; Seal 200; Skirt 210; Fixing part 220; Protrusion 221; Connecting shaft 230; Locking protrusion 231; Support 300; Water passage hole 310; Inclined surface 320; Mounting hole 330; Recessed platform 340; Sealing ring 400; Flushing valve 500. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0031] This utility model relates to an anti-siphon structure, including a pipe 100, a sealing element 200, and a support element 300.

[0032] like Figure 1 , Figure 3 and Figure 4As shown, the pipe fitting 100 has a water flow channel 101 inside. The sealing member 200 is mounted on the support member 300, which is mounted on the pipe fitting 100 and located in the water flow channel 101. The periphery of the sealing member 200 is a skirt 210. In this embodiment, the sealing member 200 is disc-shaped, and the skirt 210 is annular. The skirt 210 can be made of elastically deformable materials such as rubber or silicone, and can elastically swing relative to the sealing member 200 in the thickness direction. In the direction shown in the figure, the pipe fitting 100 is placed vertically, and the water flows from top to bottom after entering the water flow channel 101. The support member 300 intercepts the water flow path in the water flow channel 101. The outer contour shape of the support member 300 matches the cross-sectional shape of the pipe fitting 100, which has a circular cross-section, while the support member 300 is disc-shaped. The peripheral wall of the support member 300 can abut against the inner wall of the pipe fitting 100. Alternatively, a sealing ring 400 can be fitted onto the outer wall of the support member 300, abutting against the inner wall of the pipe fitting 100 to increase the sealing performance between the support member 300 and the inner wall of the pipe fitting 100. In the illustrated direction, the upper side of the support member 300 is the upstream side, and the lower side is the downstream side. The support member 300 is provided with water passage holes 310, a plurality of which are distributed circumferentially along the support member 300. The shape of the water passage holes 310 is not limited; they can be holes with a circular, triangular, or strip-shaped cross-section, etc. The water passage holes 310 extend from the upstream side to the downstream side along the thickness direction of the support member 300. Water flowing into the water passage 101 flows from the upstream side of the support member 300 through the water passage holes 310 to the downstream side of the support member 300. The seal 200 is located downstream of the support 300, and the skirt 210 is positioned opposite the water passage 310, with the skirt 210 located downstream of the water passage 310. Figure 1 As shown, when the pipe fitting 100 is not inlet water, the skirt 210 is not subjected to any other external forces. Under its own elasticity, the skirt 210 adheres tightly to the downstream side of the support 300, sealing the lower port of the water passage 310 located on the downstream side. Figure 2 As shown, when external water flows into the water passage 101, it flows downwards. Water from the upstream side of the support 300 impacts the skirt 210 through the water passage 310. The water impact causes the skirt 210 to elastically swing downwards away from the lower end of the water passage 310, releasing the blockage. The water then continues to flow downwards along the water passage 101 for discharge. When the water supply to the water passage 101 stops, the skirt 210 elastically returns to its original position after the water impact is lost, re-blocking the lower end of the water passage 310, thus isolating the upstream and downstream water passages 101 of the support 300. Anti-siphon structures can be applied in products such as water supply and drainage, medical equipment, or laboratory instruments. Figure 6As shown, this utility model also relates to a sanitary ware, which can be a urinal, squat toilet, etc. The sanitary ware utilizes this anti-siphon structure, with a flushing valve 500 installed on the pipe fitting 100, located upstream of the support member 300. The downstream port of the pipe fitting 100 is connected to the toilet chamber of the sanitary ware. The flushing valve 500 controls whether an external water supply system, such as a tap water pipe, supplies water to the water passage 101. After opening the flushing valve 500, water flows into the water passage 101, flows past the support member 300, flushes the skirt 210, and flows downwards to flush the toilet chamber. After closing the flushing valve 500, the water supply stops, and the skirt 210 resets to seal the water passage 310, thereby blocking the reverse (upward) flow of fluid (liquid, gas, etc.) in the downstream section of the water passage 101, completely sealing the passage between the toilet chamber and the upstream clean water source (tap water pipe), thus fundamentally eliminating the risk of odor overflow and water spillage. The anti-siphon structure has a simple overall structure, eliminating the complex spring reset or multi-part linkage mechanism of traditional solutions, which greatly reduces the number of parts, material costs and assembly complexity. The skirt 210 will not come into contact with the inner wall of the pipe 100 or other structures during the elastic swing process, which improves the reliability and life of the structure and avoids the risk of wear and jamming.

[0033] In one embodiment, such as Figure 1 , Figure 3 and Figure 5 As shown, the downstream surface of the support member 300 opposite to the skirt portion 210 is set as an inclined surface 320. The inclined surface 320 is inclined away from the center of the support member 300 and towards the upstream side of the support member 300. In the direction shown in the figure, the inclined surface 320 slopes upward from the center of the support member 300 outward. The inclined surface 320 can be a straight inclined surface or an arc inclined surface. The skirt portion 210 is set along the inclined direction of the inclined surface 320, that is, the skirt portion 210 slopes upward from the inside to the outside. The seal member 200 as a whole has an inverted umbrella-shaped structure. Correspondingly, the lower port of the water passage 310 is opened on the inclined surface 320. The shape of the upstream surface of the support member 300 is not limited and can be set as a flat surface, convex surface, etc. Under the condition of no water flow or negative pressure, the umbrella-shaped structure of the seal member 200 can quickly reset under the elastic restoring force and negative pressure adsorption, and the skirt portion 210 fits tightly against the inclined surface 320.

[0034] In one embodiment, such as Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the seal 200 also includes a fixing part 220, and a skirt part 210 is arranged circumferentially along the fixing part 220. The seal 200 is connected to the support member 300 through the fixing part 220. After installation, the fixing part 220 is fixed relative to the support member 300, while the skirt part 210 elastically swings relative to the fixing part 220. The fixing part 220 and the skirt part 210 can be assembled from two independent components; alternatively, they can be integrally formed. The seal 200 is constructed entirely of elastic materials such as rubber or silicone. The thickness of the fixing part 220 is greater than the thickness of the skirt part 210 to increase the structural strength of the fixing part 220, preventing deformation when subjected to water impact. Furthermore, the thickness of the joint between the skirt portion 210 and the fixing portion 220 gradually decreases in the direction away from the fixing portion 220, that is, the thickness of the joint between the skirt portion 210 and the fixing portion 220 decreases radially from the inside to the outside, so as to ensure the structural strength of the joint between the skirt portion 210 and the fixing portion 220 and to ensure the elastic restoring effect of the skirt portion 210.

[0035] The seal 200 can be connected to the support 300 by means of snap-fit, screw locking, or other methods. In this embodiment, for example... Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the support member 300 has a mounting hole 330 at its center, and a connecting shaft 230 extends upward from the center of the fixing part 220. The connecting shaft 230 has a radially protruding locking protrusion 231. During installation, the connecting shaft 230 passes through the mounting hole 330 from bottom to top. The locking protrusion 231 passes over the mounting hole 330 and is located on the upper side of the mounting hole 330. The locking protrusion 231 engages with the port of the mounting hole 330 located on the upstream side of the support member 300, thereby fixing the seal 200 to the support member 300.

[0036] Furthermore, a recessed platform 340 is provided at the middle of the downstream side of the support member 300, and a protrusion 221 protruding upward toward the platform 340 is provided at the middle of the fixing part 220, with the protrusion 221 abutting against the platform 340. The cooperation between the protrusion 221 and the platform 340 is used to position and limit the sealing member 200 when it is installed on the support member 300, preventing the sealing member 200 from wobbling up and down or left and right relative to the support member 300.

[0037] In one embodiment, such as Figure 1As shown, the pipe fitting 100 includes a first connecting pipe 110 and a second connecting pipe 120. The inner wall of the first connecting pipe 110 has a step 111, which can be in the form of a partial protrusion or an annular shape. A support member 300 is placed in the first connecting pipe 110, with its upstream side abutting against the step 111. The outer diameter of the second connecting pipe 120 is less than or equal to the inner diameter of the first connecting pipe 110. The second connecting pipe 120 is inserted into the first connecting pipe 110, with its upper end abutting against the downstream side of the support member 300. The support member 300 is clamped between the steps 111 and the ends of the second connecting pipe 120, thereby installing the support member 300 on the pipe fitting 100. Installation is very convenient, and it has high applicability and versatility. The first connecting pipe 110 and the second connecting pipe 120 can be relatively fastened together by applying adhesive, locking nuts, or other methods. The support member 300 is fitted with a sealing ring 400 on its circumferential outer wall. The sealing ring 400 abuts against the inner wall of the first pipe 110 to ensure the sealing between the support member 300 and the water passage 101.

[0038] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the 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 this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this specification, references to terms such as "some specific embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An anti-siphon structure, characterized in that, include: Pipe fitting (100), wherein the interior of the pipe fitting (100) is provided with a water flow channel (101); A seal (200) having a skirt (210) around its periphery that is capable of elastically swinging in the thickness direction. A support member (300) is provided on the water passage path of the water passage channel (101). The support member (300) is provided with a plurality of water passage holes (310) extending from the upstream side of the support member (300) to the downstream side. The sealing member (200) is installed on the support member (300) and blocks the downstream port of each water passage hole (310). The water passage hole (310) is opposite to the skirt. When the skirt (210) is subjected to the water force impact of the water passage hole (310), it can elastically swing away from the water passage hole (310).

2. The anti-siphon structure according to claim 1, characterized in that: The downstream side of the support member (300) opposite to the skirt portion (210) is set as an inclined surface (320). The inclined surface (320) is inclined in a direction away from the center of the support member (300) and towards the upstream side of the support member (300). The skirt portion (210) is set along the inclined direction of the inclined surface (320).

3. The anti-siphon structure according to claim 1 or 2, characterized in that: The sealing element (200) further includes a fixing part (220), the skirt part (210) is arranged circumferentially along the fixing part (220), and the fixing part (220) is connected to the support member (300).

4. The anti-siphon structure according to claim 3, characterized in that: The fixing part (220) and the skirt part (210) are integrally formed, and the thickness of the fixing part (220) is greater than the thickness of the skirt part (210).

5. The anti-siphon structure according to claim 3, characterized in that: The thickness of the junction between the skirt portion (210) and the fixing portion (220) gradually decreases in the direction away from the fixing portion (220).

6. The anti-siphon structure according to claim 3, characterized in that: The support member (300) has a mounting hole (330) at its center, and a connecting shaft (230) extends from the center of the fixing part (220). The connecting shaft (230) has a radially protruding locking protrusion (231). The connecting shaft (230) passes through the mounting hole (330), and the locking protrusion (231) engages with the port of the mounting hole (330) located upstream of the support member (300).

7. The anti-siphon structure according to claim 3, characterized in that: The support member (300) has a recessed platform (340) at the middle of its downstream side, and the fixing part (220) has a protrusion (221) at the middle of its side protruding toward the recessed platform (340), and the protrusion (221) abuts against the recessed platform (340).

8. The anti-siphon structure according to claim 1, characterized in that: The pipe fitting (100) includes a first connector (110) and a second connector (120). The inner wall of the first connector (110) is provided with a step (111). The support member (300) is placed in the first connector (110) and its upstream side abuts against the step (111). The second connector (120) is inserted into the first connector (110) and abuts against the downstream side of the support member (300).

9. The anti-siphon structure according to claim 8, characterized in that: The outer circumferential wall of the support member (300) is fitted with a sealing ring (400), which abuts against the inner wall of the first connecting pipe (110).

10. A sanitary ware, characterized in that: Includes a flushing valve (500) and an anti-siphon structure as described in any one of claims 1 to 9, wherein the flushing valve (500) is mounted on the pipe fitting (100) and located upstream of the support member (300).

Images