CN222009154U

CN222009154U - Anti-backflow device

Info

Publication number: CN222009154U
Application number: CN202420631296.6U
Authority: CN
Inventors: 符兆钢
Original assignee: Hainan Boxin Environment Technology Co ltd
Current assignee: Hainan Boxin Environment Technology Co ltd
Priority date: 2024-03-29
Filing date: 2024-03-29
Publication date: 2024-11-15
Anticipated expiration: 2034-03-29

Abstract

The utility model discloses a backflow preventer, which comprises a mounting frame, wherein a protective shell is arranged at the right end of the mounting frame, a backflow preventing device is arranged in the protective shell, a filtering device is arranged at the right end of the protective shell, a plurality of mounting holes are formed in the left end of the mounting frame, and a plurality of mounting holes are formed in an annular array on the mounting frame. According to the anti-backflow device, the mounting ring on the anti-backflow device is screwed into the protective shell through the external threads, so that the diaphragm is also mounted in the protective shell, and due to the design of the two rotating handles in the mounting ring, when the diaphragm needs to be replaced and cleaned, the mounting ring can be conveniently screwed out through the rotating handles, so that the diaphragm can be conveniently mounted or dismounted.

Description

Anti-backflow device

Technical Field

The utility model relates to the technical field of backflow prevention, in particular to a backflow preventer.

Background

At present, in order to prevent waterlogging from occurring in cities, a drainage pipeline is usually arranged under the cities for timely draining rainwater, but due to the fact that the altitude of the surrounding river channels is low along the cities, the altitude of the surrounding river channels is equal to that of the areas where the cities are located, and even higher than that of the areas where the cities are located, the water level of river water rises temporarily in flood season, so that the water level of the river channels is higher than that of the underground drainage pipeline, and the possibility of backflow of river water is increased. Therefore, in order to prevent the water flow from flowing backward, a backflow preventer is generally arranged in the pipeline, and rainwater or sewage is difficult to return to the pipeline after passing through the backflow preventer.

The prior art patent (application number 202322075547.5) discloses a pipe medium-sized anti-backflow device which comprises a device body component and a movable component, wherein the device body component comprises an anti-backflow device and a device body fixing piece arranged on one side of the anti-backflow device, and the movable component comprises a frame body supporting rod symmetrically arranged on the outer side of the device body fixing piece, a sliding block arranged on one side of the frame body supporting rod, a sliding rod arranged inside the sliding block, a limiting strip arranged at the bottom of the sliding rod, a floating plate supporting rod arranged on one side of the limiting strip and a floating plate arranged on one side of the floating plate supporting rod.

When the water level rises, once garbage impurities and the like exist in the water, the water can block the membrane valve in the anti-backflow device along with the water level, so that the drainage effect of the anti-backflow device is affected; in addition, when the membrane flap needs to be replaced and cleaned, the membrane flap is inconvenient to install and detach.

Disclosure of utility model

The utility model mainly aims to provide a backflow preventer, which can effectively solve the problems in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

Prevent flowing backward ware, including the mounting bracket, the protective housing is installed to the mounting bracket right-hand member, install in the protective housing and prevent flowing backward the device, filter equipment is installed to the protective housing right-hand member, a plurality of mounting hole is opened to the mounting bracket left end, a plurality of the mounting hole is annular array and sets up on the mounting bracket.

Preferably, the backflow preventing device comprises a mounting ring, rotating handles are arranged on the front inner wall and the rear inner wall of the mounting ring, external threads are carved on the outer surface of the mounting ring, a membrane flap is arranged at the right end of the mounting ring, and the mounting ring is arranged in a protective shell through the external threads. When the diaphragm needs to be replaced and cleaned, the mounting ring can be conveniently screwed out through the rotating handle, so that the diaphragm can be conveniently installed or detached, in addition, the protective shell is made of ocean-grade stainless steel, the diaphragm is made of special synthetic rubber, the diaphragm has high tolerance to various chemicals and temperature changes, the corrosion resistance of the device is improved, and the service life of the device is greatly prolonged.

Preferably, the filtering device comprises a fixing frame, a plurality of mounting screws are mounted on the outer surface of the fixing frame, a filter screen is mounted at the right end of the fixing frame, and the fixing frame is mounted at the right end of the protective shell through the mounting screws. The garbage can be blocked through the filter screen, so that the phenomenon that the garbage can block the membrane valve in the backflow preventer to influence the drainage of the backflow preventer is avoided, and the using effect of the device is improved.

Preferably, the right part of the outer surface of the protective shell is provided with a plurality of screw holes, and the inner wall of the protective shell is carved with internal threads. The mounting ring can be screwed in the protective shell through the external thread by the internal thread arranged in the protective shell.

Preferably, the two rotating handles are identical in size and are symmetrically distributed in front and back positions.

Preferably, the protective shell is made of stainless steel.

Compared with the prior art, the utility model has the following beneficial effects:

1. The installing ring on the anti-backflow device is screwed in the protecting shell through the external thread, so that the diaphragm is also installed in the protecting shell, and the installing ring can be screwed out conveniently through the rotating handles through the design of the two rotating handles in the installing ring when the diaphragm needs to be replaced and cleaned, so that the diaphragm is convenient to install or disassemble.

2. Install on protective housing by the installation screw through the mount on the filter equipment, rise when the water level to carry when some rubbish backward flow to preventing flowing backward in the ware, can block these rubbish through the filter screen, avoid these rubbish can be with preventing flowing backward the membrane lamella in the ware to block up, influence the drainage of preventing flowing backward the ware, and then improved the result of use of device.

Drawings

FIG. 1 is a schematic view of the overall structure of the anti-backflow device of the present utility model;

FIG. 2 is a schematic view showing the overall structure of a backflow preventer of the present utility model;

FIG. 3 is a schematic view showing the overall structure of a filtering device of the anti-backflow device of the present utility model;

Fig. 4 is a schematic view showing the whole structure of a protective casing of the backflow preventer of the present utility model.

In the figure: 1. a mounting frame; 2. a backflow preventing device; 3. a filtering device; 4. a protective housing; 5. a mounting hole; 20. a mounting ring; 21. rotating the handle; 22. an external thread; 23. a membrane flap; 30. a fixing frame; 31. installing a screw; 32. a filter screen; 40. an internal thread; 41. screw holes.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1-4, the anti-backflow device comprises a mounting frame 1, wherein a protective shell 4 is arranged at the right end of the mounting frame 1, an anti-backflow device 2 is arranged in the protective shell 4, a filtering device 3 is arranged at the right end of the protective shell 4, a plurality of mounting holes 5 are formed in the left end of the mounting frame 1, and the plurality of mounting holes 5 are formed in the mounting frame 1 in a ring array; the protective housing 4 is made of stainless steel.

The backflow preventing device 2 comprises a mounting ring 20, rotating handles 21 are arranged on the front inner wall and the rear inner wall of the mounting ring 20, external threads 22 are carved on the outer surface of the mounting ring 20, a membrane flap 23 is arranged at the right end of the mounting ring 20, and the mounting ring 20 is arranged in the protective shell 4 through the external threads 22; the two rotating handles 21 are identical in size and are symmetrically distributed in front and back positions. When the diaphragm 23 needs to be replaced and cleaned, the mounting ring 20 can be conveniently screwed out by rotating the handle 21, so that the diaphragm 23 is conveniently installed or detached, in addition, the protective shell 4 is made of ocean-grade stainless steel, the diaphragm 23 is made of special synthetic rubber, and the diaphragm has high tolerance to various chemicals and temperature changes, so that the corrosion resistance of the device is improved, and the service life of the device is greatly prolonged.

The filtering device 3 comprises a fixing frame 30, a plurality of mounting screws 31 are arranged on the outer surface of the fixing frame 30, a filter screen 32 is arranged at the right end of the fixing frame 30, and the fixing frame 30 is arranged at the right end of the protective shell 4 through the mounting screws 31. The filter screen 32 can block the garbage, so that the garbage can be prevented from blocking the membrane valve 23 in the backflow preventer, the drainage of the backflow preventer is affected, and the using effect of the device is improved.

The right part of the outer surface of the protective shell 4 is provided with a plurality of screw holes 41, and the inner wall of the protective shell 4 is provided with internal threads 40. The mounting ring 20 can be screwed into the protective housing 4 by means of the external thread 22 by means of the internal thread 40 provided in the protective housing 4.

It should be noted that, the present utility model is an anti-backflow device, the fixing frame 30 on the filtering device 3 is installed on the protective housing 4 by the installation screw 31, when the water level rises and carries a part of the waste back into the anti-backflow device, the waste can be blocked by the filter screen 32, the waste can be prevented from blocking the membrane flap 23 in the anti-backflow device, the drainage of the anti-backflow device is affected, the use effect of the device is further improved, the membrane flap 23 is also installed in the protective housing 4 by screwing the installation ring 20 on the anti-backflow device 2 into the protective housing 4 by the external screw thread 22, and the installation ring 20 can be conveniently screwed out by rotating the installation ring 21 when the membrane flap 23 needs to be replaced and cleaned, and the installation or the disassembly of the membrane flap 23 is convenient.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. Prevent flowing backward ware, including mounting bracket (1), its characterized in that: the novel anti-backflow device is characterized in that the right end of the mounting frame (1) is provided with a protective shell (4), the protective shell (4) is internally provided with an anti-backflow device (2), the right end of the protective shell (4) is provided with a filtering device (3), the left end of the mounting frame (1) is provided with a plurality of mounting holes (5), and the mounting holes (5) are formed in an annular array and are formed in the mounting frame (1).

2. The backflow preventer of claim 1, wherein: the anti-backflow device (2) comprises a mounting ring (20), rotary handles (21) are arranged on the front inner wall and the rear inner wall of the mounting ring (20), external threads (22) are engraved on the outer surface of the mounting ring (20), a diaphragm (23) is arranged at the right end of the mounting ring (20), and the mounting ring (20) is arranged in a protective shell (4) through the external threads (22).

3. The backflow preventer of claim 1, wherein: the filtering device (3) comprises a fixing frame (30), a plurality of mounting screws (31) are mounted on the outer surface of the fixing frame (30), a filter screen (32) is mounted at the right end of the fixing frame (30), and the fixing frame (30) is mounted at the right end of the protective shell (4) through the mounting screws (31).

4. The backflow preventer of claim 2, wherein: the right part of the outer surface of the protective shell (4) is provided with a plurality of screw holes (41), and the inner wall of the protective shell (4) is carved with internal threads (40).

5. The backflow preventer of claim 2, wherein: the two rotating handles (21) are identical in size and are symmetrically distributed in front and back positions.

6. The backflow preventer of claim 1, wherein: the protective shell (4) is made of stainless steel.