Full-automatic water return prevention device

Abstract

The utility model belongs to the technical field of drainage engineering, and particularly relates to an automatic water return prevention device which comprises a valve body. The water inlet pipe is arranged on the valve body and is used for discharging sewage; the water outlet pipe is arranged on the valve body and used for being connected into a blow-off pipeline; the valve element assembly is arranged on the valve body and used for controlling connection and disconnection between the water inlet pipe and the water outlet pipe; the control assembly is connected with the valve body and used for controlling opening and closing of the valve element assembly. The control assembly comprises a controller, a first detection piece and a second detection piece, and the first detection piece and the second detection piece are connected with the controller and arranged at the water inlet pipe and the water outlet pipe respectively. The controller, the first detection piece and the second detection piece are used in cooperation to achieve automatic closing and automatic opening of the valve body, manual operation is not needed, and the valve is more convenient to use.

Description

Technical Field

[0001] This utility model belongs to the field of drainage engineering technology, and specifically refers to a fully automatic anti-backflow device. Background Technology

[0002] Chinese invention application 2024102335677 discloses an anti-backflow device and its execution method, including a valve. A control unit is provided on one side of the valve. The control unit includes a housing, a partition, a control board, and a transmission module. The partition is provided inside the housing, and the control board is installed on one side of the partition. The transmission module is installed on the other side of the partition. The transmission module consists of a motor, a reduction gear set, and an output shaft. The output shaft is fixedly connected to the valve body inside the valve. The control board is connected to a trigger unit through a wire.

[0003] The patent application has the following drawback: the anti-backflow device cannot automatically restart after completing one anti-backflow action, and the ball valve needs to be opened manually, which makes it cumbersome to use. Summary of the Invention

[0004] The purpose of this invention is to provide a fully automatic anti-backflow device that can be automatically restarted.

[0005] The purpose of this utility model is achieved as follows:

[0006] A fully automatic anti-reverse flow device, comprising:

[0007] Valve body;

[0008] The inlet pipe, which is installed on the valve body, is used to supply sewage.

[0009] The outlet pipe, which is installed on the valve body, is used to connect to the sewage pipe;

[0010] The valve core assembly, which is mounted on the valve body, is used to control the opening and closing of the water inlet pipe and the water outlet pipe;

[0011] A control component, connected to the valve body, is used to control the opening and closing of the valve core assembly;

[0012] The control component includes a controller, a first detection element and a second detection element. The first detection element and the second detection element are connected to the controller and are respectively installed at the inlet pipe and the outlet pipe. The first detection element is used to detect whether there is sewage at the inlet pipe where the first detection element is located, and the second detection element is used to detect whether there is sewage at the outlet pipe where the second detection element is located.

[0013] When the first detection element detects sewage, the controller controls the valve core assembly to open and enter the drainage state; the controller pauses the detection of the second detection element.

[0014] When the second detection element detects sewage, the controller controls the valve core assembly to close and enter the backflow maintenance state, and the controller suspends the detection of the first detection element.

[0015] Furthermore, the first and second detection elements are capacitive sensors, and the inlet and outlet pipes are provided with mounting sockets for installing the first and second detection elements.

[0016] Furthermore, the control component also includes a drive motor, which drives a transmission gear set. The transmission gear set is connected to a drive spindle, which is connected to the valve core assembly. The controller controls the drive motor to operate, thereby causing the drive spindle to rotate and control the opening and closing of the valve body.

[0017] Furthermore, a magnet is mounted on the drive spindle, and a plurality of magnet detection sections opposite to the magnet are arranged around the drive spindle. The magnet detection sections are connected to the controller and are used to detect the rotation angle of the drive spindle.

[0018] Furthermore, the control assembly also includes a housing, on which are provided a first connecting seat and a second connecting seat respectively connected to the first detection element and the second detection element, and a third connecting seat connected to the valve body.

[0019] Furthermore, the first detection element is connected to a first timer;

[0020] When the valve core assembly opens to enter the drainage state, the first timer operates to time the flow. During the operation of the first timer, if the first detection element does not detect any sewage, the valve core assembly is controlled to reset and return to normal operation.

[0021] Furthermore, when the valve core assembly is closed and enters the backflow maintenance state, the controller controls the valve core assembly to reset and return to normal operation after the second detection element no longer detects sewage.

[0022] Furthermore, the valve body is a three-way valve, and the water inlet pipe includes a main drain pipe and a side drain pipe connected to the three-way valve, with the first detection element provided on the side drain pipe.

[0023] Furthermore, the outer end of the main drain pipe is provided with a connector seat, and the connector seat is provided with several connectors of different specifications.

[0024] Furthermore, under normal conditions where no sewage passes through, the valve core assembly is in a partially closed state.

[0025] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0026] This patent achieves automatic closing and opening of the valve body through the coordinated use of the controller, the first detection element, and the second detection element, eliminating the need for manual operation and making it more convenient to use. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a fully automatic anti-reverse flow device.

[0028] Figure 2 This is a vertical cross-sectional diagram of a fully automatic anti-backflow device.

[0029] Figure 3 This is a schematic diagram of the transverse cross-section of a fully automatic anti-backflow device.

[0030] Figure 4 This is a schematic diagram of an explosion of a fully automatic anti-reverse flow device.

[0031] Figure 5 This is a schematic diagram of the drive spindle and housing.

[0032] Figure 6 This is a disassembled diagram of the valve core assembly.

[0033] Figure 7 This is a diagram showing the disassembly of the connector seat.

[0034] The meaning of the labels in the diagram:

[0035] 1. Valve body; 11. Valve core assembly; 111. Spindle connecting seat;

[0036] 2. Water inlet pipe; 21. Installation socket; 22. Main water inlet pipe section; 23. Side water inlet pipe section; 24. Connector; 241. Connector; 242. Anti-cross-flow baffle;

[0037] 3. Water outlet pipe;

[0038] 4. Control components; 41. Controller; 411. Horn; 42. First detection element; 43. Second detection element; 44. Drive motor; 45. Transmission gear set; 46. Drive spindle; 461. Turntable; 462. Magnet; 463. Magnet detection unit; 464. Powder metallurgy sleeve; 4641. Exposed end; 4642. Retaining ring; 465. Sealing ring; 47. Control buttons;

[0039] 5. Shell; 51. Cover; 52. First connecting seat; 53. Second connecting seat; 54. Third connecting seat; 55. Partition plate; Detailed Implementation

[0040] The present invention will be further described below with reference to specific embodiments:

[0041] A fully automatic anti-backflow device includes a valve body 1 and a control component 4. The valve body 1 is connected to at least an inlet pipe 2 and an outlet pipe 3. The inlet pipe 2 is used to supply sewage, and the outlet pipe 3 is used to connect to a sewage discharge pipe. The valve body 1 is provided with a valve core assembly 11, and the opening and closing of the valve core assembly 11 controls the connection and disconnection between the inlet pipe 2 and the outlet pipe 3. The control component 4 is connected to the valve core assembly 11 and is used to control the opening and closing of the valve core assembly 11.

[0042] like Figure 1 As shown, the valve body 1 in this patent is a three-way valve body 1. The outlet pipe 3 is connected to the lower end of the three-way valve body 1. The inlet pipe 2 consists of two parts, including a main inlet pipe section 22 vertically connected to the upper end of the three-way valve body 1 and a side inlet pipe section 23 connected to the side of the three-way valve body 1. The main inlet pipe section 22, the side inlet pipe section 23 and the outlet pipe 3 are connected or disconnected by opening and closing the three-way valve body 1.

[0043] The main water inlet pipe 22 has a connector seat 24 at its outer end. The connector seat 24 has several connectors 241 of different specifications. These connectors 241 are used to connect to the wastewater outlets of different household appliances, such as washing machines, dryers, water purifiers, small water heaters, and pre-filters. An anti-cross-flow baffle 242 is provided on the inner side of the connector seat 24. Figure 6 As shown, the connector 24 is connected to the main water inlet pipe 22 by threads. The connector 24 has several threaded holes that connect to the connector 241. A raised anti-cross-flow baffle 242 is integrally formed on the inner side of the connector 24. The anti-cross-flow baffle 242 divides the several threaded holes on the connector 241 into several areas to prevent cross-flow. The side water inlet pipe 23 is used to connect to the drain of the bathroom or the sewage outlet of the kitchen sink.

[0044] The control component 4 includes a housing 5, which is formed by two joined covers 51. A controller 41 is housed within the housing 5. Specifically, the controller 41 in this patent is a circuit board containing a built-in program. Furthermore, the controller 41 is equipped with control buttons 47. The automatic anti-reverse flow device of this patent can be controlled via the built-in program on the circuit board, and the anti-reverse flow device can be controlled via the control buttons 47. Generally, the control buttons 47 include a start button, a stop button, and an automatic operation button. The automatic operation button causes the anti-reverse flow device of this patent to operate automatically.

[0045] It also includes a first detection element 42 and a second detection element 43, which are connected to the circuit board and respectively installed at the inlet pipe 2 and the outlet pipe 3. The first detection element 42 is used to detect whether there is sewage at the inlet pipe 2 where the first detection element 42 is located, and the second detection element 43 is used to detect whether there is sewage at the outlet pipe 3 where the second detection element 43 is located. When the second detection element 43 detects sewage, the controller 41 controls the valve core assembly 11 to close and enter the backflow maintenance state. When the backflow maintenance stops and the first detection element 42 detects sewage, the controller 41 controls the valve core assembly 11 to open and enter the drainage state.

[0046] Combination Figure 1 , 4 As shown, the first detection element 42 and the second detection element 43 in this patent are capacitive liquid level sensors. When the liquid level of the sewage is relative to the first detection element 42 or the second detection element 43, the corresponding first detection element 42 or the second detection element 43 will send a signal to the controller 41. Mounting sockets 21 for mounting the first detection element 42 and the second detection element 43 are integrally formed on the inlet pipe 2 and the outlet pipe 3. See details. Figure 4 A vertical mounting socket 21 is provided on the side of the outlet pipe 3, and the second detection element 43 is installed inside it to detect the sewage situation in the outlet pipe 3 on the side. Another mounting socket 21 is provided on the side inlet pipe 23 near the three-way valve body 1, and the second detection element 43 is installed inside the mounting socket 21. During the backflow of sewage, the sewage level will rise until it reaches the second detection element 43, at which time the sewage can be detected by the second detection element 43. Since the side inlet pipe 23 is used to connect to the sewage outlet of the toilet drain or the kitchen sink, the sewage inlet volume of the side inlet pipe 23 is large. Therefore, the first detection element 42 is placed inside the side inlet pipe 23 to correspond to the sewage discharge situation. When the user discharges sewage, the sewage will trigger the first detection element 42 located in the side inlet pipe 23 to drain the sewage.

[0047] In this patent, the housing 5 is provided with a first connecting seat 52 and a second connecting seat 53, such as Figure 5 As shown, the first connecting seat 52 and the second connecting seat 53 are integrally formed on one of the covers 51 of the housing 5. The size of the first connecting seat 52 and the second connecting seat 53 is adapted to the size of the mounting socket 21, and the two are inserted and fixed together. The first connecting seat 52 and the second connecting seat 53 can be used to place the wires connecting the capacitive liquid level sensor and the controller 41. The cover 51 is also provided with a third connecting seat 54, which is used to connect to the valve body 1.

[0048] The control component 4 in this patent also includes a drive motor 44, which drives a transmission gear set 45. The transmission gear set 45 is connected to a drive spindle 46, which is connected to the valve core assembly 11. The controller 41 controls the drive motor 44 to rotate the drive spindle 46, thereby controlling the opening and closing of the valve core assembly 11. Figure 4 As shown, the housing 5 in this patent also has two partitions 55 inside, with the gear set between the partitions 55. The drive motor 44 is fixed on one of the partitions 55. A controller 41 is provided on the cover 51 outside the partitions 55. The controller 41 is connected to the drive motor 44 through a guide. The motor shaft of the drive motor 44 is driven by the gear set, and the drive spindle 46 is connected through the gear set. The valve body 1 in this patent is a ball valve. The drive spindle 46 is connected to the valve core assembly 11 of the valve body 1 through a powder metallurgy sleeve 464. The rotation of the drive spindle 46 drives the valve core assembly 11 to move, thereby realizing the control of the valve body 1. In addition, a sealing ring 465 is provided outside the drive spindle 46 to seal the valve body 1 and the housing 5 after the drive spindle 46 is connected to the valve core assembly 11.

[0049] Furthermore, magnets 462 are mounted on the drive spindle 46, and a plurality of magnet detection units 463 opposite to the magnets 462 are arranged around the drive spindle 46. The magnet detection units 463 are connected to the controller 41. Figure 5 , 6 As shown, the outer edge of the drive spindle 46 is provided with a turntable 461 that is linked to it. The turntable 461 has a magnet mounting slot for mounting the magnet 462. Three magnet detection units 463 are also provided on the outer edge of the turntable 461. When the magnet 462 approaches the magnet detection unit 463, it will be energized and send a signal to the controller 41. This structure can control the rotation angle of the drive spindle 46. That is, during the rotation of the drive spindle 46, if one of the magnet detection units 463 is energized, it indicates that the drive spindle 46 has rotated to a specified angle. The rotation angle of the drive spindle 46 corresponds to the opening angle of the valve core assembly 11. This structure can control the valve core assembly 11 to exist in three states: partially closed, fully open, and fully closed. Under normal conditions when no sewage flows through, the valve core assembly 11 is in a partially closed state. Since this patent has a main drain pipe section 22 and a side drain pipe section 23, the sewage discharge volume of the joint on the main drain pipe section 22 is small, so only partial closure is needed to achieve sewage discharge. When the side drain pipe section 23 detects sewage, it will control the valve core assembly 11 to be fully open to discharge a large flow of sewage. When backflow occurs, the controller will control the valve core assembly to quickly switch from a partially closed state to a fully closed state to prevent backflow.

[0050] To increase the stability of the turntable 461 after installation, a protruding spindle connecting seat 111 is provided on one end of the valve core assembly 11. The powder metallurgy sleeve 464 is housed within the spindle connecting seat 111, and a flat hole for accommodating the drive spindle 46 is provided in the powder metallurgy sleeve 464. The powder metallurgy sleeve 464 has an exposed end 4641 that protrudes outside the spindle connecting seat 111. The turntable 461 has a flat opening at its center that adapts to the shape of the exposed end 4641, through which the turntable... The powder metallurgy sleeve 464 is fixedly engaged on the exposed end 4641, and a retaining ring 4642 is fitted on the drive spindle 46. During installation, the powder metallurgy sleeve 464 is first fixed in the spindle connecting seat 111, and then the turntable 461 is fixed on the exposed end 4641. Then, the rotating spindle is inserted into the powder metallurgy sleeve 464, so that the retaining ring 4642 on the rotating spindle abuts against the turntable 461, thereby limiting the turntable 461 and increasing the stability of the turntable 461 after installation.

[0051] It should be noted that the partial closure described in this patent can be in various forms, such as 50%, 80%, or 95%, depending on the sewage discharge situation in the main drain pipe section 22.

[0052] The fully automatic anti-reverse flow device in this patent operates as follows:

[0053] Under normal conditions, the first detection element 42 and the second detection element 43 work normally to detect whether there is sewage at their corresponding locations. It should be noted that under normal conditions, the valve body 1 is in a partially closed state, which is 95% closed in this embodiment. When sewage is discharged from the side inlet pipe 23, the first detection element 42 can detect that there is sewage at the side inlet pipe 23 and drainage is required. At this time, the controller 41 controls the valve core assembly 11 to open and enter the drainage state. In the drainage state, the second detection element 43 will not work to detect sewage until the drainage state ends.

[0054] When backflow occurs, the sewage level gradually rises until it reaches the level detected by the second detection element 43, indicating a backflow. If the valve body 1 is partially closed at this time, the controller 41 will close the valve body 1 to enter a backflow maintenance state to prevent the sewage level from rising further. Simultaneously, an alarm, typically a horn 411, will be installed in the controller 41 to indicate the presence of backflow and alert the user. The sewage detection by the first detection element 42 will be paused to prevent the valve core assembly 11 from opening. The user can deactivate the horn 411 alarm via the controller 41. After manually handling the backflow, the sewage level gradually decreases, causing the valve core assembly 11 to open, allowing the first and second detection elements 42 to resume detection and return to normal operation.

[0055] It should be noted that after the second detection element 43 detects backflow, if sewage is discharged, the first detection element 42 will come into contact with the sewage. However, due to the internal program of the controller 41, it will not trigger the drainage program and therefore will not control the valve 1 to open. Only after the backflow is manually resolved and the system returns to normal will the first detection element 42 detect and control the valve 1 to open for drainage. When backflow occurs, the user will also try to avoid sewage discharge. The alarm can be manually deactivated via the control button 47 on the housing 5. That is, when dealing with backflow, the alarm can be manually deactivated by operating the control button 47. The controller 41 in this patent can also be started or stopped via the control button 47.

[0056] In summary, this patent achieves automatic closing and opening of valve body 1 through the coordinated use of controller 41, first detection element 42 and second detection element 43, without the need for manual operation, making it more convenient to use.

[0057] Furthermore, under normal conditions when no sewage flows through, the valve core assembly 11 is in a partially closed state. This not only allows sewage from the main drain pipe 22 to drain normally, but also effectively prevents odors from backing up from the outlet pipe 3. Moreover, if the valve core assembly 11 is in a fully closed state under normal conditions, since the outlet pipe 3 connects to the municipal sewer system, gas from the sewer system will accumulate in the outlet pipe 3. If the valve core assembly 11 is fully closed for too long, the gas in the outlet pipe 3 will become excessive, causing a rise in gas pressure. If backflow occurs at this time, the backflowing water will interact with the gas in the outlet pipe 3, preventing the second detection element 43 in this patent from detecting the backflow immediately, leading to a misjudgment of the backflow phenomenon. Therefore, this patent uses partial closure of the pipe to promptly discharge gas.

[0058] Furthermore, the first detection element 42 is connected to a first timer, which is located in the controller 41 in this patent. When the first detection element 42 detects sewage, the first timer starts timing. During the operation of the first timer, if the first detection element 42 does not detect sewage, the valve body 1 is controlled to close. Specifically, the first timer is used for the sewage discharge process. That is, after the valve 1 is opened, sewage is discharged first. At this time, the first detection element 42 can continuously detect sewage. When the sewage discharge is completed, the first detection element 42 fails to detect sewage. After the first timer times for a period of time, it indicates that the sewage discharge is complete and the drainage is finished. At this time, the valve core assembly 11 is controlled to close, waiting for the next drainage. Users can also indicate the end of drainage in other ways, such as manually operating a button to indicate the end of drainage, or directly timing the first timer in the program at the start of drainage. After a specified time, the program automatically controls the valve 1 to end the drainage. This patent uses the first timer in conjunction with the detection of the first detection element 42 to automatically end the drainage, which conforms to the actual sewage discharge situation of the user, making the fully automatic anti-backflow device of this patent more scientific and reliable.

[0059] Furthermore, when the valve core assembly 11 is closed and enters the backflow maintenance state, once the second detection element 43 no longer detects sewage, the controller 41 controls the valve core assembly 11 to reset to its normal state. Specifically, after a backflow occurs and is dealt with, the water level gradually decreases. If the second detection element 43 no longer detects sewage at this time, it indicates that the backflow has been resolved, and the signal state of the second detection element 43 changes. The controller 41 will then control the valve core assembly 11 to reset to a partially closed state based on the change in its signal state, thus enabling the controller 41 to automatically resume operation after the backflow is resolved.

[0060] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

[0061] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0062] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0063] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

Claims

1. A full-automatic anti-reverse water device, characterized in that, include: Valve body (1); The inlet pipe (2) is installed on the valve body (1) and is used to discharge sewage. The outlet pipe (3) is installed on the valve body (1) and is used to connect to the sewage pipe; The valve core assembly (11) is disposed on the valve body (1) and is used to control the opening and closing of the water inlet pipe (2) and the water outlet pipe (3); Control component (4), connected to the valve body (1), is used to control the opening and closing of the valve core assembly (11); The control component (4) includes a controller (41), a first detection element (42) and a second detection element (43). The first detection element (42) and the second detection element (43) are connected to the controller (41) and are respectively located at the inlet pipe (2) and the outlet pipe (3). The first detection element (42) is used to detect whether there is sewage at the inlet pipe (2) where the first detection element (42) is located, and the second detection element (43) is used to detect whether there is sewage at the outlet pipe (3) where the second detection element (43) is located. When the first detection element (42) detects sewage, the controller (41) controls the valve core assembly (11) to open and enter the drainage state; the controller (41) suspends the detection of the second detection element (43); When the second detection element (43) detects sewage, the controller (41) controls the valve core assembly (11) to close and enter the backflow maintenance state, and the controller (41) suspends the detection of the first detection element (42).

2. The full-automatic anti-reverse water device according to claim 1, characterized in that: The first detection element (42) and the second detection element (43) are capacitive sensors, and the water inlet pipe (2) and the water outlet pipe (3) are provided with mounting sockets (21) for installing the first detection element (42) and the second detection element (43).

3. The full-automatic anti-reverse water device according to claim 1, characterized in that: The control component (4) further includes a drive motor (44), which drives a transmission gear set (45). The transmission gear set (45) is connected to a drive spindle (46), which is connected to the valve core assembly (11). The drive motor (44) is controlled by the controller (41) to rotate the drive spindle (46) to control the valve body (1) to open and close.

4. The full-automatic anti-reverse water device according to claim 3, characterized in that: Magnets (462) are mounted on the drive spindle (46), and a plurality of magnet detection parts (463) opposite to the magnets (462) are arranged around the drive spindle (46). The magnet detection parts (463) are connected to the controller (41) and are used to detect the rotation angle of the drive spindle (46) through the magnet detection parts (463).

5. The fully automatic anti - reverse water device according to claim 4, characterized in that: The valve core assembly (11) has a main shaft connecting seat (111), in which a powder metallurgy sleeve (464) is inserted. The powder metallurgy sleeve (464) has an exposed end (4641) exposed outside the main shaft connecting seat (111). A turntable (461) is fixed on the exposed end (4641), and the magnet detection part (463) is fixed on the turntable (461). A fixing ring (4642) is fitted on the drive spindle (46), which fixes the drive spindle (46) inside the powder metallurgy sleeve (464) and limits the fixing ring (4642) to one side of the turntable (461).

6. The full-automatic anti-reflection water device according to claim 1, characterized in that: The control component (4) further includes a housing (5), on which a first connecting seat (52) and a second connecting seat (53) are respectively connected to the first detection element (42) and the second detection element (43), and a third connecting seat (54) is connected to the valve body (1).

7. The fully automatic anti -reverse water device according to claim 1, characterized in that: The first detection element (42) is connected to a first timer; When the valve core assembly (11) is opened and enters the drainage state, the first timer works to time the process. During the operation of the first timer, if the first detection element (42) does not detect any sewage, the valve core assembly (11) is controlled to reset and enter the normal state.

8. The fully automatic anti-backflow device according to claim 1, characterized in that: When the valve core assembly (11) is closed and enters the backflow maintenance state, the controller (41) controls the valve core assembly (11) to reset and return to normal after the second detection element (43) no longer detects sewage.

9. The full-automatic anti-reverse water device according to any one of claims 1-8, characterized in that: The valve body (1) is a three-way valve. The water inlet pipe (2) includes a main drain pipe (22) and a side drain pipe (23) connected to the three-way valve. The side drain pipe (23) is provided with the first detection element (42). The outer end of the main drain pipe (22) is provided with a connector seat (24). The connector seat (24) is provided with several connectors (241) of different specifications.

10. The fully automatic anti -reverse water device according to claim 8, characterized in that: Under normal conditions where no sewage passes through, the valve core assembly (11) is in a partially closed state.

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