CN220102181U - Riser backward flow non-return pipe fitting - Google Patents

Abstract

The utility model discloses a riser backflow non-return pipe fitting which is arranged on a pipeline of a drainage system and comprises a backflow non-return structure cavity, wherein an upper drainage interface and a lower drainage interface are respectively arranged at the upper end and the lower end of the backflow non-return structure cavity, a floating ball limiting structure is arranged in the backflow non-return structure cavity, a hollow floating ball is arranged in the floating ball limiting structure, the diameter of the floating ball is larger than that of the upper drainage interface, and when the sewage water level in the backflow non-return structure cavity exceeds the floating ball, the floating ball floats and floats to the upper drainage interface of the pipe fitting along with the rising of the water level to stop the backflow. The utility model has simple structure and convenient disassembly and replacement, and realizes the backflow non-return function through the floating ball.

Description

Riser backward flow non-return pipe fitting

Technical Field

The utility model belongs to the technical field of drainage pipe fittings, and particularly relates to a riser backflow non-return pipe fitting.

Background

The domestic sewage and rainwater drainage system for the building consists of a transverse pipe part and a vertical pipe part, and has the main function of draining the domestic sewage and the roof rainwater into the municipal sewage drainage system through the drainage system.

No non-return structure is generally designed in the current riser system, as in chinese patent CN104652579a, which discloses a building drainage facility that performs split-flow treatment on sewage and rainwater, but does not perform backflow prevention treatment. When municipal drain pipe backward flow, or flood etc. lead to drainage jam, the water in the drainage riser can flow back from floor drain or the toilet bowl of lower floor, influences normal drainage, causes the peculiar smell, causes very big economic loss to the family.

Disclosure of Invention

Aiming at the reflux problems of sewage, rainwater and the like, the utility model aims to provide a riser reflux non-return pipe fitting.

The specific technical scheme is as follows:

the utility model provides a riser backward flow ends contrary pipe fitting installs on drainage system's pipeline, including backward flow ends contrary structure cavity, backward flow ends the both ends about the contrary structure cavity of structure is drainage top connection and drainage bottom connection respectively, is equipped with floater limit structure in the backward flow ends contrary structure cavity, is equipped with hollow floater in the floater limit structure, and the diameter of floater is greater than the diameter of drainage top connection, and after the sewage water level in the backward flow ends contrary structure cavity exceeded the floater, the floater floats, rises to pipe fitting drainage top connection department along with the water level rises, ends contrary.

A floating ball limiting structure is a frame structure arranged on the inner wall of a cavity of a backflow non-return structure, and an opening of the floating ball limiting structure is upward.

The other floating ball limiting structure comprises a special-shaped plate-shaped structure arranged on the inner wall of the cavity of the backflow non-return structure, the special-shaped plate-shaped structure and the inner wall of the cavity of the backflow non-return structure form a floating ball limiting structure, and one side, facing the floating ball, of the special-shaped plate-shaped structure is provided with an arc-shaped structure for placing the floating ball.

Further, the cavity of the backflow non-return structure is a structure with a large middle and gradually reduced two ends, the cross section area of the middle part is 2-2.5 times of that of the floating ball, and a sufficient setting space is provided for the floating ball limiting structure, so that the floating ball can float up to an upper drainage interface.

Further, the outer walls of the upper drainage connector and the lower drainage connector are provided with threaded structures for connecting pipelines of a drainage system, so that the water drainage connector is convenient to detach and replace.

The utility model has the beneficial effects that:

through set up floater and floater limit structure in backward flow non-return structure cavity, realized backward flow non-return function, can dismantle the change simultaneously, simple structure, convenient operation.

Drawings

FIG. 1 is a cross-sectional view of the present utility model;

fig. 2 shows another floating ball limiting structure of the present utility model.

In the figure: 1. a backflow non-return structural cavity; 11. an upper drainage port; 12. a drain lower port; 2. a floating ball limiting structure; 3. and a floating ball.

Detailed Description

The utility model will be further described with reference to the drawings, but the scope of the utility model is not limited thereto.

As shown in fig. 1, a riser backward flow non-return pipe fitting comprises a backward flow non-return structure cavity 1, a floating ball limiting structure 2 and a floating ball 3, wherein the backward flow non-return structure cavity 1 is of a structure with a large middle part and gradually reduced two ends, the cross section area of the middle part is 2-2.5 times that of the floating ball 3, the upper end and the lower end of the backward flow non-return structure cavity 1 are respectively provided with a drainage upper interface 11 and a drainage lower interface 12, the outer walls of the drainage upper interface 11 and the drainage lower interface 12 are respectively provided with a threaded structure for connecting a drainage system pipeline, the backward flow non-return structure cavity 1 is internally provided with the floating ball limiting structure 2, the floating ball limiting structure 2 is internally provided with a hollow floating ball 3, the diameter of the floating ball 3 is larger than that of the drainage upper interface 11, when the sewage level in the backward flow non-return structure cavity 1 exceeds the floating ball 3, the floating ball 3 floats up to the drainage upper interface 11 along with the rising of the water level, and is non-return, as shown in fig. 1, the floating ball limiting structure 2 is a frame structure arranged on the inner wall of the backward flow non-return structure cavity 1, the opening of the frame is upwards, and the floating ball 3 is placed in the frame.

As shown in fig. 2, the floating ball limiting structure 2 comprises a special-shaped plate structure arranged on the inner wall of the backflow non-return structure cavity 1, the special-shaped plate structure and the inner wall of the backflow non-return structure cavity 1 form the floating ball limiting structure 2, and one side of the special-shaped plate structure, which faces the floating ball 3, is provided with an arc-shaped structure for placing the floating ball 3.

In addition to the floating ball limiting structure 2 shown in fig. 1 and 2, other structures capable of supporting the floating ball 3 to prevent the floating ball 3 from falling down to block the drainage underwater interface 12 and not blocking the floating ball 3 from floating up to the drainage upper interface 11 are all within the scope of the present utility model.

When the backflow check pipe fitting needs to be replaced, the backflow check pipe fitting is only required to be detached from the drainage system.

Claims (5)

1. The utility model provides a riser backward flow ends contrary pipe fitting, install on drainage system's pipeline, its characterized in that includes backward flow ends contrary structure cavity (1), backward flow ends the both ends of ending contrary structure cavity (1) are drainage upper junction (11) and drainage lower junction (12) respectively, be equipped with floater limit structure (2) in the backward flow ends contrary structure cavity (1), be equipped with hollow floater (3) in floater limit structure (2), the diameter of floater (3) is greater than the diameter of drainage upper junction (11), after the sewage water level in the backward flow ends contrary structure cavity (1) surpasses floater (3), floater (3) float, along with the water level rise and come up to pipe fitting drainage upper junction (11) department, it ends contrary to end.

2. A riser backflow check pipe fitting according to claim 1, characterized in that the floating ball limiting structure (2) is a frame structure arranged on the inner wall of the backflow check structure cavity (1), and the opening of the floating ball limiting structure is upward.

3. The riser backflow check pipe fitting according to claim 1, characterized in that the floating ball limiting structure (2) comprises a special-shaped plate-shaped structure arranged on the inner wall of the backflow check structure cavity (1), the special-shaped plate-shaped structure and the inner wall of the backflow check structure cavity (1) form the floating ball limiting structure (2), and one side of the special-shaped plate-shaped structure, which faces the floating ball (3), is provided with an arc-shaped structure for placing the floating ball (3).

4. A riser backflow non-return pipe fitting according to claim 1, characterized in that the backflow non-return structural cavity (1) is of a structure with a large middle and gradually reduced two ends, and the cross-sectional area of the middle part is 2-2.5 times that of the floating ball (3).

5. A riser return check pipe according to claim 1, characterized in that the outer walls of the upper drain port (11) and the lower drain port (12) are provided with screw structures for connecting the pipes of the drain system.