Sewer pipe anti-siphon device and cleaning equipment
By designing an anti-siphon component in the sewer pipe and using a deformable cover to automatically adjust the flow state of the opening, the problem of odor emission caused by the siphon effect is solved, achieving automatic anti-siphon and air purification effects in the sewer pipe.
Patent Information
- Application Number
- CN202520292491.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-02-24
AI Technical Summary
The existing sewer pipes suffer from a siphon effect that affects the water seal in the U-shaped water storage area, leading to odor problems.
A drain pipe anti-siphon device was designed, including an inner and outer pipe nested inside and outside, a cover plate and fastening components. The cover plate is made of deformable elastic material and automatically adjusts the connection state of the opening through air pressure difference to prevent siphon effect.
It achieves an automatic anti-siphon effect in the drain pipes, effectively preventing odors from escaping and keeping the indoor air fresh.
Smart Images
Figure CN223867351U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of sewer pipe technology, and in particular to a sewer pipe anti-siphon device and cleaning equipment. Background Technology
[0002] The drain outlets of washing containers such as bath basins and washbasins are usually equipped with drainage pipes for water discharge.
[0003] like Figure 1 As shown, because the outlet of the drain pipe is connected to the sewage pipe or the main sewer pipe, odors often flow back from the sewage pipe or the main sewer pipe into the drain pipe and then into the room, causing unpleasant smells. Therefore, the bottom of the drain pipe is usually equipped with a U-shaped water storage area to retain water after the water flows out of the drain pipe. This water seal prevents odors from spreading into the room through the drain pipe.
[0004] However, when water flows out of the drainpipe, the siphon effect can adversely affect the water seal in the U-shaped water reservoir, causing problems such as odor emission. Therefore, how to prevent the siphon effect in drainpipes with U-shaped water reservoirs is a technical problem that those skilled in the art are dedicated to solving. Utility Model Content
[0005] To address the shortcomings of the prior art mentioned in the background section, this application provides a drain pipe anti-siphon device, the technical solution of which is as follows:
[0006] The anti-siphon device for drain pipes provided in this application includes a drain pipe with a U-shaped water storage pipe on it. An anti-siphon assembly is located above the drain end of the U-shaped water storage pipe. The anti-siphon assembly includes an inner and outer pipe nested together, a cover, and fastening components. The lower and upper parts of the inner pipe are respectively provided with a first opening and a second opening communicating with its inner cavity, and the first opening is connected to an external air passage. The upper and lower parts of the outer pipe are respectively provided with a third opening and a fourth opening communicating with its inner cavity, and the fourth opening is connected to the U-shaped water storage pipe. The internal air passage is connected; the cover is placed above the second port and the third port, and seals the second port, and the fastening component limits and fixes the outer edge of the cover to the wall of the external pipe, so that the second port and the third port are not connected; the cover is made of a deformable elastic material, and when the air pressure of the U-shaped water pipe is less than the external ambient air pressure, the middle part of the cover is lifted and bent upwards, so that the cover is separated from the second port and the third port, so that the air passages of the second port and the third port are connected.
[0007] In one embodiment, the drainage pipe includes an inlet pipe, a U-shaped water storage pipe, and a drain pipe connected in sequence; the anti-siphon component is provided above the connection between the U-shaped water storage pipe and the drain pipe.
[0008] In one embodiment, the outer edge of the cover plate is provided with a downwardly protruding ring, and the outer wall surface of the top end of the external tube is provided with a first annular step that matches the ring, so that the ring can be fitted into the first annular step; the fastening component is a fastening cap, which includes an upper cover surface and an annular cover body that surrounds the outer periphery of the upper cover surface and protrudes downward; the upper part of the inner wall surface of the cap is provided with a second annular step, the second annular step abuts against the outer wall surface of the ring body and the top surface of the outer edge, so as to limit and fix the outer edge to the wall of the external tube, and a certain gap space is left between the upper cover surface and the cover plate.
[0009] In one embodiment, the inner wall surface of the cover is provided with a first thread, and the outer wall surface of the outer tube is provided with a second thread that matches the first thread, so that the cover is screwed into the outer wall surface of the outer tube by means of thread fastening.
[0010] In one embodiment, the outer wall surface of the cover is provided with a plurality of protrusions.
[0011] In one embodiment, the cover includes a central region and an outer ring region; the central region and the outer ring region are respectively positioned above the second opening and the third opening, and the fastening component limits and fixes the outer edge of the outer ring region to the wall of the external pipe; when the air pressure of the U-shaped water storage pipe is lower than the external ambient air pressure, the cover bends and deforms upward, and the central region and the outer ring region separate from the second opening and the third opening, respectively; wherein, the thickness of the outer ring region is less than the thickness of the central region.
[0012] In one embodiment, the outer ring region has a through hole.
[0013] In one embodiment, both the inner tube and the outer tube are cylindrical, and the second opening is a circular opening at the top of the inner tube; the cover is a circular structure; the central area of the cover is a circular structure, and the area of the central area is greater than or equal to the area of the second opening, so that the central area can completely cover and seal the second opening.
[0014] In one embodiment, the cover is made of rubber.
[0015] This application also provides a cleaning device, which includes a cleaning container and a drain pipe anti-siphon device as described above connected to the outlet of the cleaning container.
[0016] Based on the above, compared with the prior art, this application has the following beneficial effects:
[0017] The anti-siphon device for drain pipes provided in this application can achieve a good automatic anti-siphon effect by designing anti-siphon components in the drain pipe.
[0018] Other features and beneficial effects of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing the application. The objectives and other beneficial effects of this application may be realized and obtained by means of the structures particularly pointed out in the description, claims and drawings. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Unless otherwise specified, the positional relationships in the drawings described below are based on the direction in which the components are drawn in the figures.
[0020] Figure 1 A schematic diagram of an existing sewer pipe without an anti-siphon device;
[0021] Figure 2 This is a schematic diagram of the structure of an anti-siphon device for drain pipes provided in an embodiment of this application;
[0022] Figure 3 A partially disassembled structural diagram of a drain pipe anti-siphon device provided in an embodiment of this application;
[0023] Figure 4 for Figure 3 Enlargement of the anti-siphon component Figure 1 ;
[0024] Figure 5 for Figure 3 Enlargement of the anti-siphon component Figure 2 ;
[0025] Figure 6 A cross-sectional view of a drain pipe anti-siphon device provided in an embodiment of this application;
[0026] Figure 7 for Figure 6 Enlarged view of the cross-section of the anti-siphon component;
[0027] Figure 8 for Figure 6 Enlarged view of the cross-section of the anti-siphon assembly with the middle cover plate bent upwards;
[0028] Figure 9 for Figure 6Partial structural breakdown diagram of the anti-siphon component;
[0029] Figure 10 A schematic diagram of the structure of the cover plate in the anti-siphon device for drain pipes provided in an embodiment of this application. Figure 1 ;
[0030] Figure 11 A schematic diagram of the structure of the cover plate in the anti-siphon device for drain pipes provided in an embodiment of this application. Figure 2 ;
[0031] Figure 12 A schematic diagram of the fastening components in a drain pipe anti-siphon device provided in an embodiment of this application. Figure 1 ;
[0032] Figure 13 A schematic diagram of the fastening components in a drain pipe anti-siphon device provided in an embodiment of this application. Figure 2 ;
[0033] Figure 14 This is a schematic diagram of the connection between the anti-siphon device for the drain pipe and the cleaning container, provided in one embodiment of this application.
[0034] Reference numerals: 10, cleaning container; 100, anti-siphon assembly; 200, drain pipe; 110, inner pipe; 120, outer pipe; 130, cover; 140, fastening component; 111, first opening; 112, second opening; 121, third opening; 122, fourth opening; 123, first annular step; 131, central area; 132, outer annular area; 133, outer edge; 134, ring body; 135, through hole; 141, upper cover surface; 142, cover body; 1421, second annular step; 1422, protrusion; 210, water inlet pipe; 220, U-shaped water storage pipe; 230, drain pipe. Detailed Implementation
[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. The technical features designed in the different implementations of this application described below can be combined with each other as long as they do not conflict with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0036] In the description of this application, it should be noted that all terms used in this application (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains, and should not be construed as limiting this application; it should be further understood that the terms used in this application should be understood to have the same meaning as those in the context of this specification and the relevant field, and should not be understood in an idealized or overly formal sense, except as expressly defined in this application.
[0037] This application provides as follows: Figure 2-14 The anti-siphon device for drain pipes shown in the embodiment has the following technical solution:
[0038] The anti-siphon device for the drain pipe includes a drain pipe 200, on which a U-shaped water storage pipe 220 is provided; an anti-siphon component 100 is provided above the drain end of the U-shaped water storage pipe 220; the anti-siphon component 100 includes an inner pipe 110 and an outer pipe 120 nested inside and outside, a cover plate 130, and a fastening component 140.
[0039] The inner tube 110 has a first port 111 and a second port 112 communicating with its inner cavity at its lower and upper parts, respectively, and the first port 111 is connected to the external environment air passage; the outer tube 120 has a third port 121 and a fourth port 122 communicating with its inner cavity at its upper and lower parts, respectively, and the fourth port 122 is connected to the air passage of the inner cavity of the U-shaped water storage tube 220; the cover plate 130 is placed above the second port 112 and the third port 121, and seals and covers the second port 112, and the fastening component 140 limits and fixes the outer edge 133 of the cover plate 130 to the wall of the outer tube 120 so that the second port 112 and the third port 121 are not connected.
[0040] The cover plate 130 is made of a deformable elastic material. When the air pressure of the U-shaped water pipe 220 is lower than the external ambient air pressure, the middle part of the cover plate 130 is lifted and bent upwards, so that the cover plate 130 is separated from the second port 112 and the third port 121, so that the air passages of the second port 112 and the third port 121 are connected.
[0041] Optionally, the drain pipe 200 includes an inlet pipe 210, a U-shaped water storage pipe 220, and a drain pipe 230 connected in sequence; the anti-siphon component 100 is provided above the connection between the U-shaped water storage pipe 220 and the drain pipe 230.
[0042] Specifically, such as Figure 7As shown, under normal conditions (i.e., when there is no siphon effect inside the drain pipe), the cover 130 closes tightly to the second opening 112, so that the second opening 112 and the third opening 121 are not connected, and thus the inner cavity of the external pipe 120 and the drain pipe 200 are not connected to the external environment.
[0043] like Figure 8 As shown, when the water flow back due to the initial siphon effect in the drain pipe 200, the air pressure at the U-shaped water storage pipe 220 of the drain pipe 200 is lower than that of the external atmospheric environment, thus creating an internal and external air pressure difference. Therefore, the airflow from the external environment passes through the first port 111 and the inner cavity of the inner pipe 110 and pushes into the middle of the cover plate 130, causing the cover plate 130, which is fixed by the outer edge 133, to bend upward as a whole, so that the cover plate 130 is separated from the second port 112 and the third port 121. At this time, the air passages of the second port 112 and the third port 121 are connected, so that the gas from the external environment can flow into and replenish the drain pipe 200 from the first port 111, the second port 112, the third port 121 and the fourth port 122 in sequence to increase the air pressure inside the drain pipe 200.
[0044] Then, the airflow continues to flow into the downpipe 200. When the pressure difference between the downpipe 200 and the external environment decreases to the point where the cover plate 130 no longer bends upward (i.e., the pushing force of the external airflow on the middle of the cover plate 130 no longer causes the cover plate 130 to bend upward as a whole), the cover plate 130 returns to its original position. Figure 7 In the state shown, the second opening 112 and the third opening 121 are closed, and external airflow no longer enters the drain pipe 200.
[0045] Through the aforementioned airflow process, the anti-siphon device for the drain pipe can automatically replenish air to the drain pipe 200, thereby effectively preventing siphoning.
[0046] Optionally, the outer edge 133 of the cover plate 130 is provided with a downwardly protruding ring 134, and the outer wall surface of the top end of the external tube 120 is provided with a first annular step 123 that matches the ring 134, so that the ring 134 can be fitted into the first annular step 123; the fastening component 140 is a fastening cover, which includes an upper cover surface 141 and an annular cover body 142 that surrounds the outer periphery of the upper cover surface 141 and protrudes downward; the upper part of the inner wall surface of the cover body 142 is provided with a second annular step 1421, the second annular step 1421 abuts against the outer wall surface of the ring body 134 and the top surface of the outer edge 133, so as to limit and fix the outer edge 133 to the wall of the external tube 120, and a certain gap space is left between the upper cover surface 141 and the cover plate 130.
[0047] The design of the ring body 134 of the cover plate 130, the first annular step 123 of the external tube 120, and the second annular step 1421 of the fastening component 140 ensures that the outer edge 133 of the cover plate 130 can be firmly fixed and limited to the wall of the external tube 120, preventing the cover plate 130 from falling off the external tube 120 when subjected to external airflow, thus preventing the cover plate 130 from properly covering the second opening 112 when restored.
[0048] In addition, a certain gap is left between the upper cover 141 and the cover plate 130 to prevent the cover plate 130 from being obstructed and unable to bend and deform upwards.
[0049] Optionally, the inner wall surface of the cover 142 is provided with a first thread, and the outer wall surface of the external tube 120 is provided with a second thread that matches the first thread, so that the cover 142 is screwed into the outer wall surface of the external tube 120 by means of thread fastening.
[0050] The cover 142 and the outer wall of the outer tube 120 are securely connected by a threaded fastening method. Furthermore, the connection is detachable, and the inner cover 130 can be replaced by removing the cover 142, facilitating use.
[0051] Optionally, the outer wall surface of the cover 142 is provided with a plurality of protrusions 1422.
[0052] The outer wall of the cover 142 is provided with several protrusions 1422 to increase surface friction, making it easy to unscrew and disassemble the cover 142.
[0053] Optionally, the cover plate 130 includes a central region 131 and an outer ring region 132; the central region 131 and the outer ring region 132 are respectively positioned above the second opening 112 and the third opening 121, and the fastening component 140 limits and fixes the outer edge 133 of the outer ring region 132 to the wall of the external pipe 120; when the air pressure of the U-shaped water storage pipe 220 is lower than the external ambient air pressure, the cover plate 130 bends and deforms upward, and the central region 131 and the outer ring region 132 separate from the second opening 112 and the third opening 121, respectively; wherein, the thickness of the outer ring region 132 is less than the thickness of the central region 131. Optionally, the outer ring region 132 has a through hole 135.
[0054] like Figure 8-11 As shown, the thickness of the outer ring region 132 is less than the thickness of the middle region 131. This ensures that the middle region 131 can effectively cover and seal the second opening 112, while the thinner outer ring region 132 allows external airflow to easily lift the middle of the cover plate 130, causing it to bend upwards. Similarly, the through hole 135 provided in the outer ring region 132 further facilitates the bending and deformation of its overall structure.
[0055] Optionally, both the inner tube 110 and the outer tube 120 are cylindrical, and the second opening 112 is a circular opening at the top of the inner tube 110; the cover plate 130 has a circular structure; the central area 131 of the cover plate 130 has a circular structure, and the area of the central area 131 is greater than or equal to the area of the second opening 112, so that the central area 131 can completely cover and seal the second opening 112.
[0056] It should be noted that the shape and structure of the inner tube 110, the outer tube 120, the cover plate 130, and the fastening component 140 can be adapted to meet specific needs, including but not limited to the embodiments of this application.
[0057] Optionally, the cover plate 130 is made of rubber.
[0058] It should be noted that the cover 130 in this embodiment is made of rubber. As can be seen from the above design concept, the cover 130 made of an elastically deformable material can be bent and deformed, which can meet the usage requirements of this application. Therefore, those skilled in the art can also use other elastically deformable materials to replace it, such as polymer materials such as polypropylene and polyethylene, including but not limited to the rubber used in this application embodiment.
[0059] In addition, such as Figure 14 As shown, the anti-siphon device for drain pipes in this application embodiment can be applied to various cleaning equipment:
[0060] The cleaning equipment includes a cleaning container 10 and a drain anti-siphon device. In use, the inlet of the drain pipe 200 in the drain anti-siphon device is connected to the outlet of the cleaning container 10 to achieve the anti-siphon effect.
[0061] It should be noted that the cleaning container 10 in the cleaning equipment can include various bath containers, including but not limited to washbasins, bath tubs, etc., and this application does not impose any restrictions. In addition, the anti-siphon device for the drain pipe of this application can also be applied to other equipment that needs to be connected to the drain pipe 200 for drainage, including but not limited to its application in the cleaning container 10.
[0062] Furthermore, those skilled in the art should understand that although many problems exist in the prior art, each embodiment or technical solution of this application can be improved in only one or a few aspects, without necessarily solving all the technical problems listed in the prior art or background art simultaneously. Those skilled in the art should understand that any content not mentioned in a claim should not be construed as a limitation on that claim.
[0063] Although this document frequently uses terms such as cleaning container, anti-siphon assembly, drain pipe, inner pipe, outer pipe, cover, and fastening component, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this application; interpreting them as any additional limitation would contradict the spirit of this application. The terms "first," "second," etc. (if present) in the description, claims, and accompanying drawings of the embodiments of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A drain pipe anti-siphon device, characterized in that: Includes a drain pipe (200), on which a U-shaped water storage pipe (220) is provided; The U-shaped water storage pipe (220) is provided with an anti-siphon assembly (100) above the drain end; the anti-siphon assembly (100) includes an inner pipe (110) and an outer pipe (120) nested inside and outside, a cover plate (130), and a fastening component (140). The lower and upper parts of the inner tube (110) are respectively provided with a first port (111) and a second port (112) communicating with its inner cavity, and the first port (111) is connected to the external environment air passage; the upper and lower parts of the outer tube (120) are respectively provided with a third port (121) and a fourth port (122) communicating with its inner cavity, and the fourth port (122) is connected to the inner cavity air passage of the U-shaped water storage tube (220); The cover plate (130) is placed above the second port (112) and the third port (121) and seals the second port (112). The fastening member (140) limits and fixes the outer edge (133) of the cover plate (130) to the wall of the external tube (120) so that the second port (112) and the third port (121) are not connected. The cover plate (130) is made of a deformable elastic material. When the air pressure of the U-shaped water pipe (220) is less than the external ambient air pressure, the middle part of the cover plate (130) is lifted up and bent upwards, so that the cover plate (130) is separated from the second port (112) and the third port (121), so that the air passages of the second port (112) and the third port (121) are connected.
2. The anti-siphon device for drain pipes according to claim 1, characterized in that: The sewer pipe (200) includes an inlet pipe (210), a U-shaped water storage pipe (220), and a drain pipe (230) connected in sequence. The anti-siphon component (100) is provided above the connection between the U-shaped water storage pipe (220) and the drain pipe (230).
3. The anti-siphon device for drain pipes according to claim 1, characterized in that: The outer edge (133) is provided with a downwardly protruding ring (134), and the outer wall surface of the top end of the external tube (120) is provided with a first annular step (123) that matches the ring (134), so that the ring (134) can be fitted into the first annular step (123); The fastening component (140) is a fastening cover, which includes an upper cover surface (141) and an annular cover body (142) that surrounds the outer periphery of the upper cover surface (141) and protrudes downward. The upper part of the inner wall of the cover (142) is provided with a second annular step (1421). The second annular step (1421) abuts against the outer wall of the ring (134) and the top surface of the outer edge (133) to limit and fix the outer edge (133) to the wall of the external tube (120), and a certain gap space is left between the upper cover surface (141) and the cover plate (130).
4. The anti-siphon device for drain pipes according to claim 3, characterized in that: The inner wall of the cover (142) is provided with a first thread, and the outer wall of the outer tube (120) is provided with a second thread that matches the first thread, so that the cover (142) is screwed into the outer wall of the outer tube (120) by means of thread fastening.
5. The anti-siphon device for drain pipes according to claim 3, characterized in that: The outer wall of the cover (142) is provided with a number of protrusions (1422).
6. The anti-siphon device for drain pipes according to claim 1, characterized in that: The cover plate (130) includes a central area (131) and an outer ring area (132); The central area (131) and the outer ring area (132) are respectively positioned above the second port (112) and the third port (121), and the fastening component (140) limits and fixes the outer edge (133) of the outer ring area (132) to the wall of the outer pipe (120); When the air pressure in the U-shaped water pipe (220) is less than the external ambient air pressure, the cover (130) bends upward and deforms, and the middle area (131) and the outer ring area (132) separate from the second opening (112) and the third opening (121) respectively; The thickness of the outer ring region (132) is less than the thickness of the middle region (131).
7. The anti-siphon device for drain pipes according to claim 6, characterized in that: The outer ring area (132) has a through hole (135).
8. The anti-siphon device for drain pipes according to claim 6, characterized in that: Both the inner tube (110) and the outer tube (120) are cylindrical, and the second opening (112) is a circular opening at the top of the inner tube (110); The cover plate (130) has a circular structure; the central area (131) of the cover plate (130) has a circular structure, and the area of the central area (131) is greater than or equal to the area of the second opening (112), so that the central area (131) can completely cover and seal the second opening (112).
9. The anti-siphon device for drain pipes according to claim 1, characterized in that: The cover plate (130) is made of rubber.
10. A cleaning device, characterized in that: Includes a cleaning container (10) and a drain pipe anti-siphon device connected to the outlet of the cleaning container (10); The drain pipe anti-siphon device is the drain pipe anti-siphon device as described in any one of claims 1-9.