CN216766147U

CN216766147U - Backflow prevention device for inspection well

Info

Publication number: CN216766147U
Application number: CN202122927648.1U
Authority: CN
Inventors: 孙迪
Original assignee: Jiangyin Zhongcai Molding Co ltd
Current assignee: Jiangyin Zhongcai Molding Co ltd
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-06-17
Anticipated expiration: 2031-11-26

Abstract

The utility model discloses a backflow prevention device for an inspection well, and relates to the technical field of inspection wells. The utility model comprises an external connecting pipe, an upper branch pipe and a control box, wherein a first switch valve and a second switch valve are respectively fixed on the external connecting pipe and the upper branch pipe, the first switch valve and the second switch valve are both electric switch valves, one end of the upper branch pipe is fixedly communicated with the peripheral side surface of the external connecting pipe, the other end of the upper branch pipe is provided with a right-angled elbow, the bottom of the right-angled elbow is fixedly provided with a liquid level sensor, the control box is fixed at the joint of the external connecting pipe and the upper branch pipe through a fixing piece, and a vertical plate is fixed in the control box. According to the utility model, whether the risk of backflow exists is detected and judged through the liquid level sensor, if the risk of backflow exists, the first switch valve is controlled to close the second switch valve, the water inlet pipe is plugged, water is discharged from the upper branch pipe at the top, the backflow problem can be avoided, meanwhile, the electric switch valve is used for opening and closing the pipeline, and the opening and closing are rapid and convenient.

Description

Backflow prevention device for inspection well

Technical Field

The utility model belongs to the technical field of inspection wells, and particularly relates to a backflow prevention device for an inspection well.

Background

The existing inspection well is provided with a water inlet end and a water outlet end, if the water inlet end flow is larger than the water outlet end flow, the risk of backflow can occur, the end part of the water inlet end can be provided with a turnover cover door for blocking and backflow prevention, however, the cover door carries gravity, and meanwhile, when the water inlet end and the water outlet end are located below the liquid level in the well body, the cover door is turned over, the resistance of water generated during the turning of the cover door needs to be offset, the cover door is not easy to open, and the normal water inlet and drainage of the inspection well are influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a backflow prevention device for an inspection well, which detects and judges whether a backflow risk exists or not through a liquid level sensor, controls a first switch valve to close a second switch valve to open and close a water inlet pipe if the backflow risk exists, drains water from an upper supporting pipe at the top, can avoid the backflow problem, and simultaneously opens and closes a pipeline through an electric switch valve, so that the opening and closing are fast and convenient.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

the utility model relates to a backflow prevention device for an inspection well, which comprises an external connecting pipe, an upper branch pipe and a control box, wherein the external connecting pipe is connected with the upper branch pipe;

a first switch valve and a second switch valve are respectively fixed on the external connecting pipe and the upper branch pipe, and the first switch valve and the second switch valve are both electric switch valves;

one end of the upper supporting pipe is fixedly communicated with the peripheral side face of the outer connecting pipe, the other end of the upper supporting pipe is provided with a right-angle elbow, and the bottom of the right-angle elbow is fixedly provided with a liquid level sensor;

the control box is fixed at the joint of the outer connecting pipe and the upper supporting pipe through a fixing piece, a vertical plate is fixed in the control box, and the vertical plate divides the control box into a first cavity and a second cavity;

the control ends of the first switch valve and the second switch valve are both positioned in the first cavity, and the battery pack and the controller are fixed in the second cavity;

the switch module of the first switch valve, the switch module of the second switch valve and the liquid level sensor are all electrically connected with the controller, and the power supply modules of the controller, the first switch valve and the second switch valve are all electrically connected with the battery pack.

Further, the outer pipe is kept away from first ooff valve one end week side and is fixed with the arc mounting panel, the outer pipe is located arc mounting panel outside one end and forms the socket, the outer pipe is fixed in the wall of a well through the arc mounting panel, the socket clearance sets up in the well body is intake intraductally.

Further, the mounting includes the type of falling U board, the type of falling U board is fixed in control box bottom one side, the mounting hole has been seted up on the type of falling U board, the type of falling U board both sides limit sets up respectively in the flange dish outside of takeover and first ooff valve junction outward, the type of falling U board passes through the bolt and the mounting hole is fixed with the flange dish.

Further, the bottom of the control box is fixed with a cushion block on one side far away from the fixing part, the bottom surfaces of the cushion block and the inverted U-shaped plate are respectively provided with an arc-shaped opening, and the inner wall of the arc-shaped opening is attached to the outer surface of the outer connecting pipe.

Furthermore, a waterproof hose is arranged outside a cable between the liquid level sensor and the controller, and a steel wire reinforcing layer is arranged in the waterproof hose.

Further, elbow bend keeps away from upper branch pipe one end and is located the external pipe outside, level sensor fixes the bottom of keeping away from upper branch pipe one end at elbow bend.

The utility model has the following beneficial effects:

the utility model detects the liquid level height in the well through the liquid level sensor, thereby detecting and judging whether the risk of backflow exists, if the risk of backflow exists, the first switch valve is controlled to close and the second switch valve is controlled to open, the water inlet pipe is plugged, water is discharged from the upper supporting pipe at the top, the backflow problem can be avoided, meanwhile, the pipeline is opened and closed through the electric switch valve, the gravity of the flip cover and the resistance of water do not need to be offset through the water pressure provided by the water inlet end, and the opening and closing are fast and convenient.

Of course, it is not necessary for any product in which the utility model is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a backflow prevention device for an inspection well according to the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a structural cross-sectional view of the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1-external connecting pipe, 2-upper branch pipe, 3-control box, 4-first switch valve, 5-second switch valve, 6-fixing piece, 101-arc mounting plate, 102-socket, 201-elbow bend, 202-liquid level sensor, 203-waterproof hose, 301-vertical plate, 302-first cavity, 303-second cavity, 304-battery pack, 305-controller, 306-cushion block, 307-arc opening, 601-inverted U-shaped plate and 602-mounting hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention relates to a backflow prevention device for an inspection well, which comprises an external connection pipe 1, an upper branch pipe 2 and a control box 3;

a first switch valve 4 and a second switch valve 5 are respectively fixed on the external connecting pipe 1 and the upper connecting pipe 2, and the first switch valve 4 and the second switch valve 5 are both electric switch valves;

one end of the upper branch pipe 2 is fixedly communicated with the peripheral side surface of the external pipe 1, the other end of the upper branch pipe 2 is provided with a right-angle elbow 201, and the bottom of the right-angle elbow 201 is fixedly provided with a liquid level sensor 202;

the control box 3 is fixed at the joint of the outer connecting pipe 1 and the upper supporting pipe 2 through a fixing piece 6, a vertical plate 301 is fixed in the control box 3, and the vertical plate 301 divides the control box 3 into a first cavity 302 and a second cavity 303;

the control ends of the first switch valve 4 and the second switch valve 5 are both positioned in the first cavity 302, and the battery pack 304 and the controller 305 are fixed in the second cavity 303;

the switch module of the first switch valve 4, the switch module of the second switch valve 5 and the liquid level sensor 202 are all electrically connected with the controller 305, and the power supply modules of the controller 305, the first switch valve 4 and the second switch valve 5 are all electrically connected with the battery pack 304.

Wherein as shown in fig. 1, the peripheral side face of one end of the external connecting pipe 1, which is far away from the first switch valve 4, is fixed with an arc-shaped mounting plate 101, the external connecting pipe 1 is positioned at one end of the outer side of the arc-shaped mounting plate 101 to form a socket 102, the external connecting pipe 1 is fixed in a well wall through the arc-shaped mounting plate 101, and the socket 102 is arranged in a well water inlet pipe in a clearance manner.

As shown in fig. 1 to 3, the fixing member 6 includes an inverted U-shaped plate 601, the inverted U-shaped plate 601 is fixed at one side of the bottom of the control box 3, a mounting hole 602 is formed in the inverted U-shaped plate 601, two side edges of the inverted U-shaped plate 601 are respectively disposed at the outer side of a flange at the connection position of the external connection pipe 1 and the first switch valve 4, and the inverted U-shaped plate 601 is fixed with the flange through a bolt and the mounting hole 602.

As shown in FIG. 2, a cushion block 306 is fixed on one side of the bottom of the control box 3, which is far away from the fixing member 6, the bottom surfaces of the cushion block 306 and the inverted U-shaped plate 601 are both provided with an arc-shaped opening 307, and the inner wall of the arc-shaped opening 307 is attached to the outer surface of the external connection pipe 1.

As shown in fig. 1 and 3, a waterproof hose 203 is disposed outside a cable between the liquid level sensor 202 and the controller 305, and a steel wire reinforcement layer is disposed inside the waterproof hose 203.

As shown in fig. 1 and fig. 3, one end of the elbow 201 away from the upper branch pipe 2 is located outside the external pipe 1, and the liquid level sensor 202 is fixed at the bottom of the elbow away from one end of the upper branch pipe 2.

The working principle of the utility model is as follows: liquid level sensor 202 detects the liquid level height of bottom in the well body, when well body water inlet end flow is greater than the flow of play water end, well body liquid level risees this moment, the risk that can appear flowing back, when liquid level sensor 202 detected that well body internal liquid level height reaches the setpoint, control first ooff valve 4 through controller 305 and close and control second ooff valve 5 and open, the end of intaking is discharged through upper branch 2 and quarter bend 201, can avoid the backward flow condition this moment, if when the liquid level is less than the setpoint, control first ooff valve 4 through controller 305 and open and control second ooff valve 5 and close.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a backflow preventer for inspection well which characterized in that: comprises an external connecting pipe (1), an upper supporting pipe (2) and a control box (3);

a first switch valve (4) and a second switch valve (5) are respectively fixed on the external connecting pipe (1) and the upper connecting pipe (2), and the first switch valve (4) and the second switch valve (5) are both electric switch valves;

one end of the upper branch pipe (2) is fixedly communicated with the peripheral side face of the external pipe (1), the other end of the upper branch pipe (2) is provided with a right-angle elbow (201), and the bottom of the right-angle elbow (201) is fixedly provided with a liquid level sensor (202);

the control box (3) is fixed at the joint of the outer connecting pipe (1) and the upper supporting pipe (2) through a fixing piece (6), a vertical plate (301) is fixed in the control box (3), and the vertical plate (301) divides the control box (3) into a first cavity (302) and a second cavity (303);

the control ends of the first switch valve (4) and the second switch valve (5) are both positioned in the first cavity (302), and a battery pack (304) and a controller (305) are fixed in the second cavity (303);

the switch module of the first switch valve (4), the switch module of the second switch valve (5) and the liquid level sensor (202) are electrically connected with the controller (305), and the power supply modules of the controller (305), the first switch valve (4) and the second switch valve (5) are electrically connected with the battery pack (304).

2. The backflow prevention device for the inspection well is characterized in that an arc-shaped mounting plate (101) is fixed on the peripheral side face of one end, away from the first switch valve (4), of the external connection pipe (1), a socket (102) is formed at one end, located on the outer side of the arc-shaped mounting plate (101), of the external connection pipe (1), the external connection pipe (1) is fixed in a well wall through the arc-shaped mounting plate (101), and the socket (102) is arranged in a well water inlet pipe in a clearance mode.

3. The backflow prevention device for the inspection well is characterized in that the fixing member (6) comprises an inverted U-shaped plate (601), the inverted U-shaped plate (601) is fixed on one side of the bottom of the control box (3), a mounting hole (602) is formed in the inverted U-shaped plate (601), two side edges of the inverted U-shaped plate (601) are respectively arranged on the outer side of a flange plate at the joint of the external connection pipe (1) and the first switch valve (4), and the inverted U-shaped plate (601) is fixed with the flange plate through bolts and the mounting hole (602).

4. The backflow prevention device for the inspection well is characterized in that a cushion block (306) is fixed to the side, away from the fixing piece (6), of the bottom of the control box (3), an arc-shaped opening (307) is formed in the bottom surface of the cushion block (306) and the bottom surface of the inverted U-shaped plate (601), and the inner wall of the arc-shaped opening (307) is attached to the outer surface of the outer connecting pipe (1).

5. The backflow prevention device for the inspection well is characterized in that a waterproof hose (203) is arranged outside a cable between the liquid level sensor (202) and the controller (305), and a steel wire reinforced layer is arranged in the waterproof hose (203).

6. The backflow prevention device for the inspection well is characterized in that one end of the elbow (201), which is far away from the upper branch pipe (2), is located outside the external pipe (1), and the liquid level sensor (202) is fixed at the bottom of the elbow, which is far away from the end of the upper branch pipe (2).