CN217974708U

CN217974708U - Backflow prevention device

Info

Publication number: CN217974708U
Application number: CN202222361616.4U
Authority: CN
Inventors: 钟旺林
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-06
Filing date: 2022-09-06
Publication date: 2022-12-06
Anticipated expiration: 2032-09-06

Abstract

The utility model relates to a backflow prevention device, which comprises a pipeline, wherein an upper valve seat is arranged at the upper part of the pipeline, a drain hole capable of draining water is arranged at the middle part of the upper valve seat, a valve port is arranged at the drain hole, the valve port is a conical hole with a small upper part and a big lower part, a lower valve seat is arranged at the lower part of the pipeline, the lower valve seat is provided with a lower water slope capable of draining water, the lower water slope is provided with a conical hole with a boss and a groove, a floating ball is arranged between the upper valve seat and the lower valve seat, and the valve port can be blocked when the floating ball floats upwards; the utility model discloses a set up valve port and floater, when the sewage refluence of river or street sewer well in river outlet, make the floater come-up and the contact blocks the slope, the floater is because of buoyancy effect and valve port laminating to prevent river or sewer well sewage and flow backward.

Description

Backflow prevention device

Technical Field

The utility model belongs to the technical field of the pipeline drainage technique and specifically relates to a prevent flowing backward device is related to.

Background

Urban drainage pipelines are generally used for discharging treated sewage and rainwater, and in urban construction, the pipelines are generally buried underground, and water outlets of the pipelines are communicated with river channels. When the rainfall is large, the water quantity in the river channel is large, and when the water in the river channel rises to or fills the drainage port of the river channel, the situation that the water in the river channel flows back to the road surface through the drainage well is very easy to occur. The existing sewage discharge pipeline is mostly a straight-through pipeline, sewage flows backwards frequently, pollution is caused, the well cover of a sewer well is easily washed away when sewage flows backwards, potential safety hazards are caused, and a device capable of preventing sewage from flowing backwards is urgently needed for solving the problems that the sewage flows backwards and preventing the potential safety hazards.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model provides a backflow prevention device which can effectively prevent the river water and the sewage from flowing backward.

The technical scheme of the utility model as follows:

the backflow prevention device comprises a pipeline, wherein an upper valve seat is installed on the upper portion of the pipeline, a drain hole capable of draining water is formed in the middle of the upper valve seat, a valve port is formed in the drain hole, a lower valve seat is installed on the lower portion of the pipeline, a lower water slope capable of draining water is formed in the lower valve seat, a floating ball is arranged between the upper valve seat and the lower valve seat, and the valve port can be blocked when the floating ball floats upwards.

The valve port arranged on the upper valve seat is a conical hole with a small upper part and a large lower part, and the conical hole can be tightly attached to the floating ball.

The lower water slope arranged on the lower valve seat is a conical hole with a large upper part and a small lower part, bosses and grooves are uniformly distributed on the lower water slope, and the grooves at the lower water slope can also drain water when the floating ball sinks to the bosses.

Wherein, the floating ball is a sphere and is made of a buoyant anticorrosive rubber material.

The pipeline can be a seamless steel pipe, a PE pipe or a PVC pipe or a cement material.

Wherein, a grid cover is also arranged above the upper valve seat.

The utility model discloses following beneficial effect has:

1. the utility model discloses a set up valve port and floater, when the sewage refluence of river or street sewer well of riverway outlet, make the floater come-up and the contact blocks the slope, the floater is because of buoyancy effect and valve port laminating to prevent river or sewer well sewage to flow backward, the valve port designs into big end down's circular cone hole and the floater laminating is inseparabler.

2. The lower valve seat of the utility model is provided with a drainage slope, the lower slope is evenly provided with a boss and a groove, when the drainage quantity is small, the floating ball is arranged on the boss of the drainage slope, water is discharged from the groove of the drainage slope, and the floating ball is prevented from plugging the drainage hole; when the water discharge is larger, the floating ball floats upwards and drains water simultaneously at the groove and the boss of the launching slope when the valve port is not attached.

3. The utility model discloses the whole bell mouth that recess and boss interconnect is designed into to the lower water slope of disk seat down, more does benefit to the emission of water and debris, and debris are difficult to hang in offal mouth department. If the lower valve seat of the utility model is designed into the hollowed-out taper holes or the horizontal hollowed-out grids, sundries are easy to hang; if the floating ball is designed into a planar integral tapered hole, the floating ball is easy to block the air flow circulation of the drainage pipeline when the floating ball is statically placed on a downslope when no water is drained.

4. The utility model is provided with a grid cover which can prevent the object from falling; when the road sewer well cover is not in place, the grid cover can avoid safety accidents.

Drawings

FIG. 1 is a schematic view of the present invention;

fig. 2 is a sectional view of the present invention;

fig. 3 is a schematic structural view of the lower valve seat of the present invention.

The reference numbers in the figures denote:

1-a pipeline; 2-upper valve seat; 3-a drain hole; 4-valve port; 5-lower valve seat; 6-water slope drainage; 7-floating ball; 8-boss; 9-a groove; 10-mesh cover.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 3, the backflow prevention device comprises a pipeline 1, an upper valve seat 2 is installed on the upper portion of the pipeline 1, a drain hole 3 capable of draining water is formed in the middle of the upper valve seat 2, a valve port 4 is arranged at the position of the drain hole 3, the valve port 4 is a conical hole with a small upper portion and a large lower portion, a lower valve seat 5 is installed on the lower portion of the pipeline 1, a lower water slope 6 capable of draining water is arranged on the lower valve seat 5, the lower water slope 6 is a conical hole with a large upper portion and a small lower portion, bosses 8 and grooves 9 are evenly distributed on the lower water slope 6, the bosses 8 are of a semicircular structure and evenly distributed on the lower water slope 6, a floating ball 7 is arranged between the upper valve seat 2 and the lower valve seat 5, and the valve port 4 can be blocked when the floating ball 7 floats upwards.

Furthermore, the floating ball 7 is a ball body and is made of a buoyant anticorrosive rubber material.

Further, the pipeline 1 can be made of seamless steel pipe, PE pipe or PVC pipe or cement material.

Furthermore, a grid cover 10 is arranged above the upper valve seat 2 to prevent the object from falling.

The utility model discloses the theory of operation:

the utility model discloses water gets into from the outlet of last disk seat 2, discharges through lower water slope 6 of disk seat 5 down. When the water displacement is small, the floating ball 7 is placed on the boss 8 of the launching slope 6, water is discharged from the groove 9 of the launching slope 6, and the boss 8 plays a role of preventing the floating ball 7 from blocking a water outlet; when the water discharge is larger, the floating ball 7 floats upwards and simultaneously discharges water at the groove 9 and the boss 8 of the launching slope 6 when the valve port 4 is not attached.

When river water at a river channel drainage port or sewage of a street sewer well flows backwards, the floating ball 7 is enabled to float upwards to contact with the blocking slope, the floating ball 7 is attached to the valve port 4 due to the buoyancy, and therefore the river water or sewage of the sewer well is prevented from flowing backwards, and the valve port 4 is designed to be a conical hole with a small upper part and a large lower part and is attached to the floating ball 7 more tightly.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "above", "upper", "lower", "inner", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate medium, and may be used for communicating the inside of two elements or for interacting with each other, unless otherwise specifically defined, and the specific meaning of the terms in the utility model can be understood by those skilled in the art according to the specific situation.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. The anti-backflow device comprises a pipeline (1) and is characterized in that an upper valve seat (2) is installed on the upper portion of the pipeline (1), a drain hole (3) capable of draining water is formed in the middle of the upper valve seat (2), a valve port (4) is formed in the position of the drain hole (3), a lower valve seat (5) is installed on the lower portion of the pipeline (1), a drainage water descending slope (6) capable of draining water is formed in the lower valve seat (5), a floating ball (7) is arranged between the upper valve seat (2) and the lower valve seat (5), and the valve port (4) can be blocked when the floating ball (7) floats upwards.

2. The backflow prevention device as claimed in claim 1, wherein: the valve port (4) arranged on the upper valve seat (2) is a conical hole with a small upper part and a big lower part, and the conical hole can be tightly attached to the floating ball (7).

3. The backflow prevention device as claimed in claim 2, wherein: lower water slope (6) that lower valve seat (5) set up are big-end-up's bell mouth, evenly distributed is equipped with boss (8) and recess (9) on lower water slope (6), and lower water slope (6) recess (9) department can also the drainage when floater (7) sink to boss (8).

4. The backflow prevention device as claimed in claim 1, wherein: the floating ball (7) is a ball body and is made of a buoyant anticorrosive rubber material.

5. The backflow prevention device as claimed in claim 1, wherein: the pipeline (1) can be made of seamless steel pipes, PE pipes, PVC pipes or cement materials.

6. An anti-backflow device as claimed in any one of claims 1 to 5, wherein: and a grid cover (10) is also arranged above the upper valve seat (2).