Alarm interlocking device for preventing sewage backflow

Abstract

The utility model discloses an alarm interlocking device for preventing sewage backflow, and relates to the technical field of alarm interlocking for preventing sewage backflow. Comprising a valve body, a mounting seat is fixedly arranged at the top of the valve body, an adjusting cylinder is fixedly arranged at the top of the mounting seat, a threaded rod is movably arranged in the adjusting cylinder, one end of the threaded rod is fixedly connected with an output shaft of a motor, and a threaded sleeve is movably arranged outside the threaded rod; and a connecting rod is fixedly arranged at the bottom of the threaded sleeve, one end of the connecting rod is fixedly connected with the top of the baffle, a PLC is fixedly arranged at the position, located on the left side of the mounting base, of the top of the valve body, an audible and visual alarm is fixedly arranged at the top of the PLC, and an ultrasonic flowmeter is fixedly arranged in the valve body. By arranging the ultrasonic flowmeter, the PLC and the audible and visual alarm, real-time monitoring and alarming of the sewage flow can be achieved, and the reliability and safety of the sewage discharge system are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of sewage backflow alarm interlock technology, specifically an alarm interlock device to prevent sewage backflow. Background Technology

[0002] An alarm interlock device to prevent sewage backflow is a safety device used to monitor and prevent sewage backflow. This device combines an alarm system and an interlocking mechanism, enabling it to issue a timely warning and take appropriate interlocking measures to prevent further spread of sewage when a backflow event occurs.

[0003] Chinese utility model patent CN218653341U discloses an anti-backflow valve for wastewater treatment. This utility model works by having water flow into the drain port after passing through the valve body. The water in the drain port is then guided by a guide plate and a hollow cylinder into a duckbill valve. As the water pressure gradually increases, the outlet of the duckbill valve gradually widens, achieving an anti-backflow function. This prevents damage to the valve from backflowing water, extending its service life. Furthermore, by first removing the screws from the sealing plate, and then holding the pull ring and lifting it upwards, the sealing plate moves upwards, which in turn moves the guide plate upwards as well. This facilitates filter replacement, reduces the workload of personnel, and ensures uninterrupted operation of the wastewater treatment project, demonstrating high practicality.

[0004] However, while the above-mentioned device improves the stability of water discharge, it does not have the function of water flow monitoring and alarm. When the water flow is large, the duckbill valve may not be able to completely solve the backflow problem. If the water flow cannot be monitored and fed back in real time and the valve is not closed in time, sewage backflow will still occur, which is inconvenient for users. Utility Model Content

[0005] This invention provides an alarm interlock device to prevent sewage backflow, thereby solving the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an alarm interlock device for preventing sewage backflow, comprising a valve body, an inlet port connected to one side of the valve body by bolts, a drain port connected to the other side of the valve body by bolts, a mounting base fixedly mounted on the top of the valve body, an adjusting cylinder fixedly mounted on the top of the mounting base, a threaded rod movably mounted inside the adjusting cylinder, one end of the threaded rod penetrating the top of the adjusting cylinder and extending to the outside of the adjusting cylinder, one end of the threaded rod being fixedly connected to the output shaft of a motor, a threaded sleeve movably mounted outside the threaded rod, a connecting rod fixedly mounted at the bottom of the threaded sleeve, one end of the connecting rod being fixedly connected to the top of a baffle, a PLC controller fixedly mounted on the top of the valve body and located on the left side of the mounting base, an audible and visual alarm fixedly mounted on the top of the PLC controller, and an ultrasonic flow meter fixedly mounted inside the valve body.

[0007] Furthermore, a filter screen is movably installed inside the water inlet port. The top of the filter screen passes through the water inlet port and is fixedly connected to the bottom of the pull plate. The pull plate is connected to the top of the water inlet port by screws.

[0008] Furthermore, a duckbill valve is fixedly installed inside the drain port.

[0009] Furthermore, the connection between the threaded rod and the threaded sleeve is a threaded connection, and the threaded sleeve has a threaded hole inside that is compatible with the threaded rod.

[0010] Furthermore, a storage battery is fixedly installed on the top of the valve body and on the right side of the mounting base. The storage battery is electrically connected to the motor, PLC controller, audible and visual alarm and ultrasonic flow meter.

[0011] Furthermore, the ultrasonic flow meter is electrically connected to the PLC controller.

[0012] Compared with the prior art, this utility model provides an alarm interlock device to prevent sewage backflow, which has the following beneficial effects:

[0013] 1. This alarm interlock device for preventing sewage backflow uses a PLC controller, an audible and visual alarm, and an ultrasonic flow meter. The ultrasonic flow meter monitors the flow rate inside the valve body and feeds the data back to the PLC controller. After analysis, if the flow rate inside the valve body is too high and exceeds the set value, the PLC controller controls the motor to run, causing its output shaft to drive the threaded rod to rotate. This causes the threaded sleeve to drive the connecting rod and the baffle to descend, thus moving the baffle into the valve body and blocking it, thereby closing the valve body and effectively preventing sewage backflow. Simultaneously, the PLC controller controls the audible and visual alarm to sound an alarm, notifying the on-duty personnel in real time to handle abnormal situations. This prevents sewage backflow caused by motor failure, power outage, or delays in manual operation, significantly improving the reliability and safety of the sewage discharge system and meeting the backflow prevention requirements under complex operating conditions. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a front view structural diagram of the present utility model;

[0016] Figure 3 This is a schematic diagram of the adjusting cylinder structure of this utility model.

[0017] In the diagram: 1. Valve body; 2. Inlet port; 201. Filter screen; 202. Pull plate; 3. Drain port; 301. Duckbill valve; 4. Mounting base; 5. Adjusting cylinder; 501. Threaded rod; 502. Motor; 503. Threaded sleeve; 504. Connecting rod; 505. Baffle; 6. PLC controller; 601. Audible and visual alarm; 7. Battery; 8. Ultrasonic flow meter. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-3This utility model discloses an alarm interlock device for preventing sewage backflow, including a valve body 1. One side of the valve body 1 is connected to a water inlet port 2 by bolts, and the other side of the valve body 1 is connected to a drain port 3 by bolts. A mounting base 4 is fixedly installed on the top of the valve body 1. An adjusting cylinder 5 is fixedly installed on the top of the mounting base 4. A threaded rod 501 is movably installed inside the adjusting cylinder 5. One end of the threaded rod 501 passes through the top of the adjusting cylinder 5 and extends to the outside of the adjusting cylinder 5. One end of the threaded rod 501 is fixedly connected to the output shaft of a motor 502. A threaded sleeve 503 is movably installed outside the threaded rod 501. A connecting rod 504 is fixedly installed at the bottom of the threaded sleeve 503. One end of the connecting rod 504 is fixedly connected to the top of a baffle 505. A PLC controller 6 is fixedly installed on the top of the valve body 1 and to the left of the mounting base 4. An audible and visual alarm 601 is fixedly installed on the top of the PLC controller 6. An ultrasonic flow meter 8 is fixedly installed inside the valve body 1.

[0020] Specifically, a filter screen 201 is movably installed inside the water inlet port 2. The top of the filter screen 201 passes through the water inlet port 2 and is fixedly connected to the bottom of the pull plate 202. The pull plate 202 is connected to the top of the water inlet port 2 by screws.

[0021] In this embodiment, by setting up a filter screen 201 and a pull plate 202, the filter screen 201 can block impurities in the sewage and prevent the water inlet port 2 from becoming clogged. When it is necessary to clean the filter screen 201, the connection between the pull plate 202 and the top of the water inlet port 2 can be released by tightening the bolts. Then, by pulling the pull plate 202 upwards, the filter screen 201 can be moved upwards and pulled out from the inside of the water inlet port 2, which facilitates the cleaning of the filter screen 201 and ensures the filtration effect of the filter screen 201.

[0022] Specifically, a duckbill valve 301 is fixedly installed inside the drain port 3.

[0023] In this embodiment, by setting a duckbill valve 301, the water flow enters the interior of the drain port 3 after passing through the valve body 1. The water flow entering the drain port 3 then enters the duckbill valve 301. Inside the duckbill valve 301, as the water pressure gradually increases, the outlet of the duckbill valve 301 gradually widens. After the outlet of the duckbill valve 301 widens, the water flow will be discharged stably. When the water flow stops and the pressure disappears, the outlet of the duckbill valve 301 will close under its own elasticity, which can ensure the stable discharge of water.

[0024] Specifically, the threaded rod 501 and the threaded sleeve 503 are connected by a threaded connection, and the threaded sleeve 503 has a threaded hole inside that is compatible with the threaded rod 501.

[0025] In this embodiment, by setting up a threaded rod 501 and a threaded sleeve 503, and utilizing the threaded connection between the threaded rod 501 and the threaded sleeve 503, the output shaft of the motor 502 is started to drive the threaded rod 501 to rotate, thereby causing the threaded sleeve 503 to move vertically up and down along the outside of the threaded rod 501. This causes the threaded sleeve 503 to drive the connecting rod 504 and the baffle 505 to move vertically up and down, thus opening and closing the valve body 1. The steps are simple, the operation is convenient, and the ease of use of the device is improved.

[0026] Specifically, a storage battery 7 is fixedly installed on the top of the valve body 1 and on the right side of the mounting base 4. The storage battery 7 is electrically connected to the motor 502, the PLC controller 6, the audible and visual alarm 601 and the ultrasonic flow meter 8.

[0027] In this implementation scheme, by setting up a storage battery 7, the motor 502, PLC controller 6, audible and visual alarm 601 and ultrasonic flow meter 8 can be powered, ensuring the operation of the device.

[0028] Specifically, the ultrasonic flow meter 8 and the PLC controller 6 are electrically connected.

[0029] In this embodiment, by setting up an ultrasonic flow meter 8 and a PLC controller 6, the ultrasonic flow meter 8 can monitor the flow rate of water inside the valve body 1 in real time and feed the flow data back to the PLC controller 6. If the feedback value is higher than the set value of the PLC controller 6, the PLC controller 6 will control the valve body 1 to close to prevent sewage backflow.

[0030] In operation, wastewater first enters the valve body 1 through inlet port 2. After being filtered by filter screen 201, impurities inside the wastewater are removed, preventing blockage of inlet port 2. The ultrasonic flow meter 8 inside the valve body 1 monitors the wastewater flow rate in real time and feeds the flow data back to the PLC controller 6. If the flow rate exceeds the set value of the PLC controller 6, the PLC controller 6 controls the motor 502 to run, causing its output shaft to drive the threaded rod 501 to rotate. This causes the threaded sleeve 503 to drive the connecting rod 504 and the baffle 505 to descend, thereby moving the baffle 505 into the valve body 1 and blocking it, thus closing the valve body 1 and effectively preventing wastewater backflow. The PLC controller 6 synchronously controls the audible and visual alarm 601 to issue an alarm, which notifies the on-duty personnel in real time to handle abnormal situations and prevent sewage backflow caused by motor 502 failure, power outage or manual operation delay. If the value is within the set value of the PLC controller 6, the valve body 1 opens, and the sewage entering the drain port 3 will flow into the duckbill valve 301. Inside the duckbill valve 301, as the water pressure gradually increases, the outlet of the duckbill valve 301 will gradually widen. After the outlet of the duckbill valve 301 widens, the water flow will be discharged stably. When the water flow stops and the pressure disappears, the outlet of the duckbill valve 301 will close under its own elasticity to ensure the stable discharge of water.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An alarm interlock device for preventing sewage backflow, comprising a valve body (1), characterized in that: One side of the valve body (1) is bolted to a water inlet port (2), and the other side of the valve body (1) is bolted to a drain port (3). A mounting base (4) is fixedly installed on the top of the valve body (1), and an adjusting cylinder (5) is fixedly installed on the top of the mounting base (4). A threaded rod (501) is movably installed inside the adjusting cylinder (5). One end of the threaded rod (501) passes through the top of the adjusting cylinder (5) and extends to the outside of the adjusting cylinder (5). One end of the threaded rod (501) is connected to the output of the motor (502). The shaft is fixedly connected, and a threaded sleeve (503) is movably provided on the outside of the threaded rod (501). A connecting rod (504) is fixedly provided at the bottom of the threaded sleeve (503). One end of the connecting rod (504) is fixedly connected to the top of the baffle (505). A PLC controller (6) is fixedly provided on the top of the valve body (1) and on the left side of the mounting base (4). An audible and visual alarm (601) is fixedly provided on the top of the PLC controller (6). An ultrasonic flow meter (8) is fixedly provided inside the valve body (1).

2. The alarm interlock device for preventing sewage backflow according to claim 1, characterized in that: A filter screen (201) is movably installed inside the water inlet port (2). The top of the filter screen (201) passes through the water inlet port (2) and is fixedly connected to the bottom of the pull plate (202). The pull plate (202) is connected to the top of the water inlet port (2) by screws.

3. The alarm interlock device for preventing sewage backflow according to claim 1, characterized in that: A duckbill valve (301) is fixedly installed inside the drain port (3).

4. The alarm interlock device for preventing sewage backflow according to claim 1, characterized in that: The connection between the threaded rod (501) and the threaded sleeve (503) is a threaded connection, and the threaded sleeve (503) has a threaded hole inside that is compatible with the threaded rod (501).

5. The alarm interlock device for preventing sewage backflow according to claim 1, characterized in that: A battery (7) is fixedly installed on the top of the valve body (1) and on the right side of the mounting base (4). The battery (7) is electrically connected to the motor (502), the PLC controller (6), the audible and visual alarm (601), and the ultrasonic flow meter (8).

6. The alarm interlock device for preventing sewage backflow according to claim 1, characterized in that: The ultrasonic flow meter (8) and the PLC controller (6) are electrically connected.

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