Backflow preventer detection control device

Abstract

The utility model belongs to the technical field of control devices, and discloses a backflow preventer detection control device which comprises a first pipeline, a second pipeline is installed on the side wall of the first pipeline, and a backflow prevention device is installed in the first pipeline. The backflow prevention device comprises a fixed plate fixedly arranged on the inner wall of the first pipeline and a rotating plate rotationally arranged on the inner wall of the first pipeline, the side wall, away from the second pipeline, of the rotating plate abuts against the side wall, close to the second pipeline, of the fixed plate, and a backflow detection device is installed on the first pipeline. The method has the effect of reducing the probability of environmental pollution.

Description

Technical Field

[0001] The utility model relates to the technical field of control devices, in particular to a backflow preventer detection control device. Background Art

[0002] Backflow preventers are mainly used on the connecting pipes between urban tap water and other drinking water pipelines and downstream water pipelines to strictly prevent backflow pollution of drinking water in upstream pipelines and protect the water quality of drinking water.

[0003] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: the working status of the existing anti-backflow device cannot be judged during operation. During this process, if the seal of the backflow device is damaged and leaks, the backflow leakage liquid is likely to pollute the environment because it cannot be handled in time. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a backflow preventer detection control device.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A backflow preventer detection control device comprises a first pipe, a second pipe is installed on the side wall of the first pipe, a backflow prevention device is installed in the first pipe, the backflow prevention device comprises a fixed plate fixedly arranged on the inner wall of the first pipe and a rotating plate rotatably arranged on the inner wall of the first pipe, the rotating plate is away from the side wall of the second pipe and abuts against the side wall of the fixed plate close to the second pipe, and the first pipe is installed with a backflow detection device.

[0007] By adopting the above technical solution, when the device is in use, water flows from the first pipe to the second pipe. During this process, the rotating plate rotates under the action of the water flow, thereby causing the water flow to flow into the second pipe. At this time, if backflow occurs, the side wall of the rotating plate away from the second pipe abuts against the side wall of the fixed plate close to the second pipe, thereby causing the rotating plate to block the water flow. During this process, when the backflow prevention device leaks, the backflow detection device detects the leakage, thereby reminding the staff to perform maintenance, thereby reducing the probability of backflow leakage liquid polluting the environment.

[0008] Furthermore, the backflow detection device includes a first connecting tube installed at the bottom end of the first pipe, a second connecting tube installed at the bottom end of the first pipe, a detection tube whose two ends are respectively connected to the first connecting tube and the second connecting tube, and a sealing diaphragm slidably arranged in the detection tube, the side wall of the sealing diaphragm is tightly pressed against the inner wall of the detection tube, and a drainage outlet is opened through the bottom surface of the detection tube.

[0009] By adopting the above technical solution, when water flows from the first pipe to the second pipe, part of the water flows into the first connecting pipe and further into the detection pipe, so that the water pressure squeezes the sealing diaphragm to move toward the second connecting pipe to the top of the drain port, so that the sealing diaphragm blocks the drain pipe (see the specific structure). Figure 2 and Figure 3 ). Then, when the backflow prevention device leaks, the sewage flows into the detection tube through the second connecting pipe. At this time, when the backflow pressure is greater than the water flow pressure, the sealing gasket moves away from the second connecting pipe, thereby separating the sealing gasket from the drain pipe (see the specific structure). Figure 5 ), so that the sewage moves out of the detection tube through the drain port. At this time, the staff found that the sewage was flowing out, and the staff repaired it, thereby reducing the probability of backflow and leakage of liquid polluting the environment.

[0010] Furthermore, a drain pipe is installed in the drain outlet, and an end of the drain pipe away from the detection tube is installed with a water tank with a hollow interior, and a float type liquid level switch is installed in the water tank.

[0011] By adopting the above technical solution, sewage moves from the drain outlet to the drain pipe, and then flows into the water storage tank through the drain pipe. At this time, the float type liquid level switch floats upward under the action of the water flow, and when it floats to the set limit value, the float type liquid level switch triggers the alarm device. At this time, the alarm is sounded in the control room. During this process, there is no need for staff to stay by the device all the time, thereby reducing the difficulty of the staff's work.

[0012] Furthermore, protective shells are installed at both ends of the sealing diaphragm, and the protective shells are slidably connected to the inner wall of the detection tube.

[0013] By adopting the above technical solution, the protective shell protects the sealing diaphragm, thereby reducing the probability of damage to the sealing diaphragm, thereby extending the service life of the device.

[0014] Furthermore, a limit rod is fixedly arranged on the inner wall of the detection tube, and the limit rod passes through the protective shell and the bee membrane and is slidably connected thereto.

[0015] By adopting the above technical solution, the limiting rod limits the movement of the protective shell and the sealing diaphragm, thereby reducing the probability of deviation of the protective shell and the sealing diaphragm, thereby improving the stability of the device.

[0016] Furthermore, reset grooves are provided on two opposite inner walls of the first pipe, reset rods are rotatably arranged in the two reset grooves, the two reset rods are fixed to the rotating plate, and torsion springs are fixedly arranged on the side walls of the two reset rods away from each other, and the two torsion springs are respectively fixedly arranged on the inner walls adjacent to the reset grooves.

[0017] By adopting the above technical solution, when the water flow is turned off, the reset rod rotates under the action of the torsion spring, and then the rotating plate rotates under the action of the reset rod, so that the side wall of the rotating plate abuts against the side wall of the fixed plate, thereby reducing the difficulty of resetting the rotating plate for the staff, thereby reducing the difficulty of the staff's work.

[0018] Furthermore, the sealing diaphragm is a sealing diaphragm made of nitrile rubber material.

[0019] By adopting the above technical solution, the sealing performance of the sealing diaphragm made of nitrile rubber material is improved, thereby reducing the probability of leakage.

[0020] Furthermore, a blocking plate is fixedly provided on the side wall of the limiting rod, and the side wall of the blocking plate abuts against the side wall of the protective shell.

[0021] By adopting the above technical solution, the blocking plate limits the sealing diaphragm and the protective shell, thereby reducing the probability that the sealing diaphragm cannot be directly opposite the drain outlet, thereby improving the stability of the device.

[0022] In summary, the utility model has the following beneficial effects:

[0023] 1. In the present application, when the device is in use, water flows from the first pipe to the second pipe. During this process, the rotating plate rotates under the action of the water flow, thereby causing the water flow to flow into the second pipe. At this time, if backflow occurs, the rotating plate blocks the water flow because the side wall of the rotating plate away from the second pipe abuts against the side wall of the fixed plate close to the second pipe. During this process, when the backflow prevention device leaks, the backflow detection device detects the leakage and reminds the staff to perform maintenance, thereby reducing the probability of the backflow leakage liquid polluting the environment;

[0024] 2. In the present application, when water flows from the first pipe to the second pipe, part of the water flows into the first connecting pipe and further into the detection pipe, so that the water pressure squeezes the sealing diaphragm to move toward the second connecting pipe to the top of the drain port, so that the sealing diaphragm blocks the drain pipe (see the specific structure for details). Figure 2 and Figure 3 ). Then, when the backflow prevention device leaks, the sewage flows into the detection tube through the second connecting pipe. At this time, when the backflow pressure is greater than the water flow pressure, the sealing gasket moves away from the second connecting pipe, thereby separating the sealing gasket from the drain pipe (see the specific structure). Figure 5 ), so that the sewage moves out of the detection tube through the drain port. At this time, the staff found that the sewage was flowing out, and the staff repaired it, thereby reducing the probability of backflow and leakage of liquid polluting the environment;

[0025] 3. In this application, sewage moves into the drain pipe through the drain outlet, and then flows into the water storage tank through the drain pipe. At this time, the float type liquid level switch floats upward under the action of the water flow, and when it floats to the set limit value, the float type liquid level switch triggers the alarm device. At this time, the control room alarms, and during this process, there is no need for staff to stay by the device at all times, thereby reducing the difficulty of the staff's work. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0027] Figure 2 It is a schematic cross-sectional structure diagram of a backflow detection device in a closed state in an embodiment of the utility model;

[0028] Figure 3 It is a schematic diagram of the cross-sectional structure of the detection tube in the embodiment of the utility model;

[0029] Figure 4 It is a schematic cross-sectional structure diagram of the backflow prevention device in the embodiment of the utility model;

[0030] Figure 5 It is a schematic cross-sectional structure diagram of the backflow detection device in the embodiment of the utility model when it is opened.

[0031] In the figure: 1. first pipeline; 11. second pipeline; 2. backflow prevention device; 21. fixed plate; 22. rotating plate; 3. backflow detection device; 31. first connecting pipe; 32. second connecting pipe; 33. detection tube; 34. sealing diaphragm; 35. drain outlet; 4. drain pipe; 41. water tank; 42. float type liquid level switch; 5. protective shell; 6. limit rod; 7. reset groove; 71. reset rod; 72. torsion spring; 8. blocking plate. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0033] like Figure 1-5As shown, the embodiment of the present application discloses a backflow preventer detection control device, including a first pipe 1, a second pipe 11, a backflow prevention device 23, a backflow detection device 3, a drain pipe 4, a water storage tank 41, a float type liquid level switch 42, a reset rod 71 and a torsion spring 72. The first pipe 1 is a circular tubular structure, and its axis is horizontal. The first pipe 1 is a circular tubular structure, and its axis coincides with the axis of the first pipe 1, and the second pipe 11 is installed on the side wall of the first pipe 1. The backflow prevention device 2 is installed in the first pipe 1, and the backflow prevention device 2 includes a fixed plate 21 and a rotating plate 22. The fixed plate 21 is a circular arc plate structure, and the fixed plate 21 is fixedly arranged on the inner wall of the first pipe 1. The rotating plate 22 is a circular arc plate structure, and the rotating plate 22 is rotatably arranged on the inner wall of the first pipe 1, and the side wall of the rotating plate 22 away from the second pipe 11 abuts against the side wall of the fixed plate 21 close to the second pipe 11.

[0034] When the device is in use, water flows from the first pipe 1 to the second pipe 11. During this process, the rotating plate 22 rotates under the action of the water flow, thereby causing the water flow to flow into the second pipe 11. At this time, if backflow occurs, the side wall of the rotating plate 22 away from the second pipe 11 abuts against the side wall of the fixed plate 21 close to the second pipe 11, thereby causing the rotating plate 22 to block the water flow. During this process, when the backflow prevention device 2 leaks, the backflow detection device 3 detects the leakage, thereby reminding the staff to perform maintenance, thereby reducing the probability of the backflow leakage liquid polluting the environment.

[0035] The backflow detection device 3 is installed on the first pipeline 1, and the backflow detection device 3 includes a first connecting tube 31, a second connecting tube 32, a detection tube 33 and a sealing diaphragm 34. The first connecting tube 31 is a circular tubular structure, and the first connecting tube 31 is installed at the bottom end of the first pipeline 1. The second connecting tube 32 is a circular tubular structure, and the second connecting tube 32 is installed at the bottom end of the first pipeline 1. The detection tube 33 is a circular tubular structure, and its axis is horizontal. The two ends of the detection tube 33 are respectively connected to the first connecting tube 31 and the second connecting tube 32, and a drain port 35 is opened through the bottom surface of the detection tube 33. The sealing diaphragm 34 is slidably arranged in the detection tube 33, and its axis coincides with the axis of the detection tube 33, and the side wall of the sealing diaphragm 34 is pressed against the inner wall of the detection tube 33.

[0036] When water flows from the first pipe 1 to the second pipe 11, part of the water flows into the first connecting pipe 31 and further into the detection pipe 33, so that the water pressure squeezes the sealing diaphragm 34 to move toward the second connecting pipe 32 to the top of the drain port 35, so that the sealing diaphragm 34 blocks the drain pipe 4 (see the specific structure for details). Figure 2 and Figure 3). Then, when the backflow prevention device 2 leaks, the sewage flows into the detection tube 33 through the second connecting pipe 32. At this time, when the backflow pressure is greater than the water flow pressure, the sealing gasket moves away from the second connecting pipe 32, thereby separating the sealing gasket from the drain pipe 4 (see the specific structure). Figure 5 ), so that the sewage moves to the outside of the detection tube 33 through the drain port 35. At this time, the staff finds that the sewage flows out, and the staff repairs it, thereby reducing the probability of backflow leakage liquid polluting the environment.

[0037] The drain pipe 4 is a circular tubular structure with a vertical axis, and is installed in the drain port 35. The water storage tank 41 is a hollow box structure, and is installed at one end of the drain pipe 4 away from the detection tube 33. A float type liquid level switch 42 is installed in the water storage tank 41 for alarm.

[0038] The sewage moves into the drain pipe 4 through the drain port 35, and then flows into the water storage tank 41 through the drain pipe 4. At this time, the float type liquid level switch 42 floats upward under the action of the water flow, and when it floats to the set limit value, the float type liquid level switch 42 triggers the alarm device. At this time, the control room alarms, and during this process, there is no need for the staff to stay by the device all the time, thereby reducing the difficulty of the staff's work.

[0039] In order to extend the service life of the device, protective shells 5 are installed at both ends of the sealing diaphragm 34, and the protective shells 5 are slidably connected to the inner wall of the detection tube 33. The protective shells 5 protect the sealing diaphragm 34, thereby reducing the probability of damage to the sealing diaphragm 34, thereby extending the service life of the device.

[0040] In order to improve the stability of the device, a limit rod 6 is fixedly arranged on the inner wall of the detection tube 33, and the limit rod 6 passes through the protective shell 5 and the bee diaphragm and is slidably connected thereto. The limit rod 6 limits the movement of the protective shell 5 and the sealing diaphragm 34, thereby reducing the probability of deviation of the protective shell 5 and the sealing diaphragm 34, thereby improving the stability of the device.

[0041] The first pipe 1 has two opposite inner walls provided with reset grooves 7, the reset rod 71 is a round rod structure, the axis of which is horizontal, two reset rods 71 ​​are provided and are respectively rotatably arranged in the two reset grooves 7, and the two reset rods 71 ​​are fixed to the rotating plate 22. Two torsion springs 72 are provided, one end of the two torsion springs 72 is respectively fixed to the side walls of the two reset rods 71 ​​away from each other, and the two torsion springs 72 are respectively fixed to the inner walls adjacent to the reset groove 7.

[0042] When the water flow is turned off, the reset rod 71 rotates under the action of the torsion spring 72, thereby causing the rotating plate 22 to rotate under the action of the reset rod 71, so that the side wall of the rotating plate 22 abuts against the side wall of the fixed plate 21, thereby reducing the difficulty for the staff to reset the rotating plate 22, thereby reducing the difficulty of the staff's work.

[0043] In order to reduce the probability of leakage, the sealing diaphragm 34 is made of nitrile rubber. The sealing diaphragm 34 made of nitrile rubber improves the sealing performance of the sealing diaphragm 34, thereby reducing the probability of leakage.

[0044] In order to improve the stability of the device, a blocking plate 8 is fixedly provided on the side wall of the limiting rod 6, and the side wall of the blocking plate 8 abuts against the side wall of the protective shell 5. The blocking plate 8 limits the sealing diaphragm 34 and the protective shell 5, thereby reducing the probability that the sealing diaphragm 34 cannot face the drain port 35, thereby improving the stability of the device.

[0045] The use principle of a backflow preventer detection control device in this embodiment is:

[0046] When the device is in use, water flows from the first pipe 1 to the second pipe 11. During this process, the rotating plate 22 rotates under the action of the water flow, thereby causing the water flow to flow into the second pipe 11. During this process, when the water flows from the first pipe 1 to the second pipe 11, part of the water flows into the first connecting pipe 31 and further into the detection pipe 33, thereby causing the water pressure to squeeze the sealing diaphragm 34 to move toward the direction close to the second connecting pipe 32 to the top of the drain port 35, thereby causing the sealing diaphragm 34 to block the drain pipe 4 (see the specific structure for details). Figure 2 and Figure 3 ). Then, when the backflow prevention device 2 leaks, the sewage flows into the detection tube 33 through the second connecting pipe 32. At this time, when the backflow pressure is greater than the water flow pressure, the sealing gasket moves away from the second connecting pipe 32, thereby separating the sealing gasket from the drain pipe 4 (see the specific structure). Figure 5 ), so that the sewage moves to the outside of the detection tube 33 through the drain port 35. At this time, the staff finds that the sewage flows out, and the staff repairs it, thereby reducing the probability of backflow leakage liquid polluting the environment.

[0047] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A backflow preventer detection and control device, comprising a first pipeline (1), characterized in that: A second pipe (11) is installed on the side wall of the first pipe (1), and a backflow prevention device (2) is installed in the first pipe (1). The backflow prevention device (2) comprises a fixed plate (21) fixedly arranged on the inner wall of the first pipe (1) and a rotating plate (22) rotatably arranged on the inner wall of the first pipe (1), the rotating plate (22) being away from the side wall of the second pipe (11) and abutting against the side wall of the fixed plate (21) close to the second pipe (11), and a backflow detection device (3) is installed on the first pipe (1).

2. A backflow preventer detection and control device according to claim 1, characterized in that: The backflow detection device (3) comprises a first connecting pipe (31) installed at the bottom end of the first pipe (1), a second connecting pipe (32) installed at the bottom end of the first pipe (1), a detection pipe (33) whose two ends are respectively connected to the first connecting pipe (31) and the second connecting pipe (32), and a sealing diaphragm (34) slidably arranged in the detection pipe (33), the side wall of the sealing diaphragm (34) is tightly pressed against the inner wall of the detection pipe (33), and a drainage port (35) is formed through the bottom surface of the detection pipe (33).

3. A backflow preventer detection control device according to claim 2, characterized in that: A drainage pipe (4) is installed in the drainage port (35), and a hollow water storage tank (41) is installed at one end of the drainage pipe (4) away from the detection tube (33), and a float type liquid level switch (42) is installed in the water storage tank (41).

4. A backflow preventer detection control device according to claim 2, characterized in that: Protective shells (5) are installed at both ends of the sealing diaphragm (34), and the protective shells (5) are slidably connected to the inner wall of the detection tube (33).

5. A backflow preventer detection control device according to claim 4, characterized in that: A limit rod (6) is fixedly arranged on the inner wall of the detection tube (33), and the limit rod (6) penetrates the protective shell (5) and the bee membrane and is slidably connected thereto.

6. A backflow preventer detection and control device according to claim 1, characterized in that: Reset grooves (7) are provided on two opposite inner walls of the first pipe (1), reset rods (71) are rotatably arranged in the two reset grooves (7), the two reset rods (71) are fixed to the rotating plate (22), and torsion springs (72) are fixedly arranged on the side walls of the two reset rods (71) away from each other, and the two torsion springs (72) are respectively fixedly arranged on the inner walls adjacent to the reset grooves (7).

7. A backflow preventer detection and control device according to claim 2, characterized in that: The sealing diaphragm (34) is a sealing diaphragm (34) made of nitrile rubber.

8. A backflow preventer detection control device according to claim 5, characterized in that: A blocking plate (8) is fixedly arranged on the side wall of the limiting rod (6), and the side wall of the blocking plate (8) abuts against the side wall of the protective shell (5).

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