Blowdown pipeline anti-back-surging structure with overflow non-return function

Abstract

The utility model provides a blowdown pipeline anti-return structure with overflow non-return function, which comprises an upper adapting pipe, a lower adapting pipe and a connecting pipe, the upper adapting pipe, the connecting pipe and the lower adapting pipe are sequentially connected to form a main channel of a building blowdown system, the side wall of the connecting pipe extends outwards to form an overflow pipe, an overflow port of the overflow pipe is hinged with a valve plate, and the valve plate is connected with the connecting pipe. The upper end of the valve plate is hinged to the upper side of the overflow opening, and the lower end of the valve plate is matched with the lower side of the overflow opening through magnetic attraction. When the pressure in the main channel is low, the valve plate is downwards and tightly attached to the overflow opening of the overflow pipe by means of the gravity of the valve plate, at the moment, the overflow opening is in a closed state, and when the pressure in the main channel rises to a certain value, the pressure overcomes the magnetic force to push the valve plate to be opened outwards, and at the moment, the overflow opening is in an opened state. According to the utility model, redundant sewage can be discharged in time when the pressure in the sewage discharge main pipeline rises, the sewage is prevented from flowing back, the overflow port is sealed through magnetic force under normal conditions, the sealing property and the sanitation of the system are ensured, and the anti-back-flowing device is suitable for the low-floor pipeline anti-back-flowing application of various building sewage discharge systems.

Description

TECHNICAL FIELD

[0001] The utility model relates to building sewage system field, concretely relates to a sewage pipeline anti-backflow structure with overflow check function. BACKGROUND

[0002] In the building sewage system, the sewage pipeline of low floor is prone to backflow, which not only causes environmental pollution, but also may cause health problems and equipment damage. Therefore, it is necessary to design a sewage pipeline anti-backflow structure with overflow check function. CONTENT OF THE UTILITY MODEL

[0003] The utility model discloses a sewage pipeline anti-backflow structure with overflow check function to solve the problem that the sewage pipeline of prior art is prone to backflow.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a sewage pipeline anti-backflow structure with overflow check function, characterized by comprising upper adapter pipe, lower adapter pipe and connecting pipe, the upper adapter pipe, connecting pipe and lower adapter pipe are connected in sequence to form the main channel of building sewage system, the side wall of connecting pipe extends outwardly and has overflow pipe, the overflow port of overflow pipe is hingedly provided with valve plate, the upper end of valve plate is hinged to the upper side of overflow port, and the lower end of valve plate is matched with the lower side of overflow port through magnetic attraction;When the pressure in the main channel is low, the valve plate relies on its own gravity to be downward and closely adhere to the overflow port of overflow pipe, at this time, the overflow port is in closed state, when the pressure in the main channel rises to a certain value, the pressure overcomes the magnetic force and pushes the valve plate to open outward, at this time, the overflow port is in open state.

[0005] Further, the overflow pipe is upwardly inclined and arranged at a certain angle with the side wall of the connecting pipe.

[0006] Further, the connecting pipe, the upper adapter pipe and the lower adapter pipe are fixed by clamps respectively, and a sealing gasket is arranged between the clamp and the connecting pipe.

[0007] Further, a magnet is arranged on the end face of the overflow port of the overflow pipe, and a magnetic attraction piece magnetically attracted to the magnet is arranged on the opposite position of the valve plate and the magnet.

[0008] Further, the magnetic attraction piece is a magnetic block or an iron block.

[0009] Further, a sealing ring is arranged on the connecting end face of the overflow pipe and the valve plate, and an avoidance slot for connecting the magnetic attraction piece and the magnet is arranged on the position of the sealing ring opposite the magnetic attraction piece.

[0010] Further, the sealing ring is an oil-resistant and corrosion-resistant rubber sealing ring.

[0011] By adopting the technical scheme, compared with the prior art, the following beneficial effects are achieved: by arranging the upwardly-inclined overflow pipe and the magnetic overflow check valve, the excess sewage can be discharged in time when the pressure in the sewage main pipe is increased, and the sewage backflow is prevented, and meanwhile, the overflow port is closed by the magnetic force in normal conditions, so that the sealing property and the hygiene of the system are ensured, the overall structure is simple, the installation is convenient, the maintenance cost is low, the structure is suitable for the low-floor pipe backflow prevention application of various building sewage systems, and has promotion value. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0013] Figure 1 is a structural schematic view of the present application;

[0014] Figure 2 is an enlarged view of A part in Figure 1 .

[0015] The reference signs are explained as follows: 1, upper receiving pipe; 2, lower receiving pipe; 3, connecting pipe; 31, overflow pipe; 311, magnet; 312, sealing ring; 3121, avoiding groove; 4, valve plate; 5, clamp. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the present application more clearly, the following will further describe the present application in combination with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0017] In view of the problems in the prior art, the present application provides a sewage pipe backflow prevention structure with overflow check function, and the following will describe the present application in detail in combination with the drawings.

[0018] Referring to Figures 1-2The technical scheme adopted by the embodiment is shown as follows: a sewage pipeline anti-backflow structure with overflow check function, comprising an upper connecting pipe 1, a lower connecting pipe 2 and a connecting pipe 3, the upper connecting pipe 1, the connecting pipe 3 and the lower connecting pipe 2 are sequentially connected to form a main channel of a building low-floor sewage system, the connecting pipe 3 is fixedly connected with the upper connecting pipe 1 and the lower connecting pipe 2 through a clamp 5, and a sealing gasket (not shown in the figure) is arranged between the clamp 5 and the connecting pipe 3. The side wall of the connecting pipe 3 extends outwardly to have an overflow pipe 31, the overflow pipe 31 is upwardly inclined and arranged to form a certain angle with the side wall of the connecting pipe 3.

[0019] It should be particularly noted that the valve plate 4 is hingedly arranged on the overflow port of the overflow pipe 31, the upper end of the valve plate 4 is hingedly connected to the upper side of the overflow port, and the lower end of the valve plate 4 is magnetically attracted to the lower side of the overflow port; when the pressure in the main channel is low, the valve plate 4 relies on its own gravity to tightly adhere to the overflow port of the overflow pipe 31, at this time, the overflow port is in a closed state, when the pressure in the main channel rises to a certain value, the pressure overcomes the magnetic force to push the valve plate 4 outward to open, at this time, the overflow port is in an open state, when the pressure in the main channel begins to drop, the valve plate 4 is again tightly adsorbed to the overflow pipe 31 due to its own gravity.

[0020] A magnet 311 is arranged on the end face of the overflow port of the overflow pipe 31, and a magnetic attraction piece (not shown in the figure) magnetically attracted to the magnet 311 is arranged at the opposite position of the valve plate 4 and the magnet 311, the magnetic attraction piece can be a magnetic block or an iron block.

[0021] A sealing ring 312 is arranged on the connecting end face of the overflow pipe 31 and the valve plate 4, the sealing ring 312 is an oil-resistant and corrosion-resistant rubber sealing ring, which can ensure good sealing performance in long-term use. The position of the sealing ring 312 relative to the magnetic attraction piece is provided with an avoidance groove 3121 for connecting the magnetic attraction piece and the magnet 311.

[0022] In practical application, when the building sewage system is in normal operation, the pressure in the main channel is low, the magnetic overflow check valve keeps closed under the action of magnetic force, preventing sewage from flowing back through the overflow pipe 31, and also avoiding the emission of odor and breeding of mosquitoes. When the pressure in the main channel is raised to a certain value due to some reasons (such as excessive sewage discharge, pipe blockage, etc.), the pressure acts on the pressure plate to overcome the magnetic force of the magnet 311, so that the valve plate 4 is opened outward, and the overflow port is in an open state, part of the sewage will be discharged through the overflow pipe 31, thereby reducing the pressure in the main channel and preventing sewage from backflowing. When the pressure returns to normal, the magnetic force again makes the valve plate 4 adhere to the overflow pipe 31 to close the overflow port, ensuring the normal operation of the system. The overflow port also has the function of an inspection port, and the inside of the overflow pipe 31 and the entire anti-backflow structure can be inspected and maintained through the overflow port. The whole structure of the utility model is simple, easy to install, and low in maintenance cost, which can effectively prevent the backflow of sewage in the building low-floor sewage pipe and improve the hygiene and reliability of the building sewage system.

[0023] In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more than two; The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not indicative or implied that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicative or implied relative importance.

[0024] The above is only used to illustrate the technical scheme of the utility model and is not limited, and other modifications or equivalent replacements of the technical scheme of the utility model made by those skilled in the art should be covered in the scope of the claims of the utility model.

Claims

1. A sewage pipe anti-backflow structure with overflow check function, characterized in that, The utility model relates to a building sewage system overflow valve, including upper support pipe (1), lower support pipe (2) and connecting pipe (3), upper support pipe (1), connecting pipe (3) and lower support pipe (2) are connected in proper order and form the main channel of building sewage system, the lateral wall of connecting pipe (3) extends outwardly and has overflow pipe (31), the valve plate (4) is hingedly arranged on the overflow port of overflow pipe (31), the upper end of valve plate (4) is hinged to the upper side of overflow port, and the lower end of valve plate (4) is matched with the lower side of overflow port through magnetic attraction, when the pressure in the main channel is low, valve plate (4) relies on self gravity and is tightly attached on the overflow port of overflow pipe (31), and the overflow port is in closed state at this time, when the pressure in the main channel rises to a certain value, pressure pushes valve plate (4) to open outward by overcoming magnetic force, and the overflow port is in open state at this time.

2. The sewer pipe anti-backflow structure with overflow check function according to claim 1, characterized in that, The overflow pipe (31) is upwardly inclined and arranged to form a certain angle with the lateral wall of the connecting pipe (3).

3. The sewer line backflow prevention structure with overflow check function according to claim 1, characterized in that, The connecting pipe (3) is fixed with the upper support pipe (1) and the lower support pipe (2) through the clamp (5) respectively, and a sealing gasket is arranged between the clamp (5) and the connecting pipe (3).

4. The sewer line backflow prevention structure with overflow check function according to claim 1, characterized in that, A magnet (311) is arranged on the end face of the overflow port of the overflow pipe (31), and a magnetic attraction member is arranged on the opposite position of the magnet (311) of the valve plate (4) to be magnetically attracted to the magnet (311).

5. The sewer pipe anti-backflow structure with overflow check function according to claim 4, characterized in that, The magnetic attraction member is a magnetic block or an iron block.

6. The sewer line backflow prevention structure with overflow check function according to claim 1, characterized in that, A sealing ring (312) is arranged on the connecting end face of the overflow pipe (31) and the valve plate (4), and an avoiding slot (3121) is arranged on the position of the sealing ring (312) relative to the magnetic attraction member to facilitate the connection of the magnetic attraction member and the magnet (311).

7. The sewer line backflow prevention structure with overflow check function according to claim 6, characterized in that, The sealing ring (312) is an oil-resistant and corrosion-resistant rubber sealing ring.

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