Drainage device capable of preventing water return

Abstract

The utility model discloses a drainage device capable of preventing backwater, which comprises a drainage pipe connected to a user drainage port, the drainage pipe is connected with a plugging box used for preventing backwater from flowing back to a user, a water sealing pipe used for preventing odor returning is arranged below the plugging box, and the bottom end of the water sealing pipe is connected to a main drainage pipeline; a plugging block used for plugging the drainage pipe is arranged in the plugging box, and a floating body used for enabling the plugging block to enter the drainage pipe is arranged at the lower end of the plugging block through a connecting rod; a filter for filtering impurities in water is arranged between the plugging box and the water sealing pipe, an access hole for overhauling and cleaning the filter is formed in the filter, and an access cover is arranged on the access hole. According to the utility model, the drainage pipe is blocked after being blocked, so that sewage can be effectively prevented from returning, water accumulation in a room of a user is avoided, the drainage pipe is subjected to water sealing through the water sealing pipe, gas is prevented from flowing back to the room, and the comfort level of the user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drainage, and more specifically to a drainage device for preventing backflow of water. Background Art

[0002] The drainage system is a part of the engineering installation, in which the drainage pipe is used to transmit and receive ground water or water-using equipment into the drainage system. It is an important part of the drainage system. Its performance is directly related to whether the entire engineering installation is qualified.

[0003] Although the performance of drainage pipes is crucial, there are still some problems when people use them, such as water backflow in the drainage pipes, where sewage flows back into the room from the water inlet of the drainage pipes, which not only affects the user's normal drainage, causing water to accumulate in the user's room and unable to be drained, affecting the user's daily life, but also the sewage returns to the user, which is easy to breed bacteria, causing indoor environmental pollution and affecting people's health; moreover, most of the existing drainage pipes have odor, and the gas generated by the sewage discharged in the pipes will return to the room along the drainage pipes, especially in windy weather, which is more obvious, affecting the indoor air environment. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a drainage device to prevent backflow, so as to prevent backflow and odor in the drainage pipe, avoid water accumulation in the room, and improve user comfort.

[0005] In order to solve the above technical problems, the technical solutions adopted by the present utility model are as follows.

[0006] A drainage device for preventing backflow, comprising a drainage pipe connected to a user's drainage outlet, a sealing box connected to the drainage pipe for preventing backflow of water to the user, a water seal pipe for preventing backflow is arranged below the sealing box, and the bottom end of the water seal pipe is connected to a main drainage pipe; a sealing block for sealing the drainage pipe is arranged in the sealing box, and a floating body for allowing the sealing block to enter the drainage pipe is arranged at the lower end of the sealing block through a connecting rod; a filter for filtering impurities in the water is arranged between the sealing box and the water seal pipe, an inspection port for inspecting and cleaning the filter is arranged on the filter, and an inspection cover is arranged on the inspection port.

[0007] To further optimize the technical solution, a guide ring for guiding the upward and downward movement of the connecting rod is provided inside the sealing box through a fixed rod, and the guide ring is sleeved on the connecting rod.

[0008] To further optimize the technical solution, the inspection end is threadedly mounted on the inspection port of the filter.

[0009] To further optimize the technical solution, a sealing ring is provided inside the inspection cover to improve the sealing performance.

[0010] To further optimize the technical solution, the water seal pipe is a horizontal S-shaped structure, with one end connected to the drain pipe at a low position and the other end connected to the main drain pipe at a high position.

[0011] To further optimize the technical solution, the height of the water seal pipe is lower than the height of the filter.

[0012] Due to the adoption of the above technical scheme, the technical progress achieved by the present invention is as follows.

[0013] The utility model provides a drainage device to prevent backflow, which can seal the drainage pipe after it is blocked, thereby effectively preventing sewage from backflowing and avoiding water accumulation in the user's room. The drainage pipe is water-sealed by a water-sealing pipe to prevent gas from flowing back into the room, thereby improving the comfort of the user. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 It is a structural schematic diagram of the guide ring of the utility model.

[0016] Among them: 1. Drain pipe, 2. Sealing box, 3. Sealing block, 4. Fixing rod, 5. Guide ring, 6. Connecting rod, 7. Float, 8. Filter, 9. Inspection cover, 10. Water seal pipe. DETAILED DESCRIPTION

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] A drainage device for preventing backflow, combined with Figure 1 to Figure 2 As shown, it includes a drain pipe 1, a plugging box 2, a filter 8 and a water seal pipe 10. The drain pipe 1 is connected to the user's drain outlet, the plugging box 2 is arranged on the drain pipe 1, the filter 8 and the water seal pipe 10 are arranged on the drain pipe below the plugging box 2 in sequence, and the bottom end of the water seal pipe 10 is connected to the main drainage pipe.

[0019] A blocking block 3 is provided in the blocking box 2, and a float 7 is provided at the lower end of the blocking block 3 through a connecting rod 6. The blocking block is driven to move upward by the upward movement of the float, and the blocking block moves up to the inside of the drain pipe to block the drain pipe.

[0020] A guide ring 5 is provided inside the plugging box 2 through a fixed rod 4. The guide ring 5 is sleeved on a connecting rod 6 to guide the up and down movement position of the connecting rod 6, so that the connecting rod moves up and down along the guide ring, and plays a role in limiting the connecting rod. When the drain pipe is draining downward, the plugging block is away from the drain pipe due to its own gravity and water pressure, and the sewage is discharged normally from the drain pipe. When the drain pipe is blocked, the water level in the plugging box rises, which will float the float, and the float drives the plugging block to move upward and enter the inside of the drain pipe to achieve blocking, thereby preventing sewage from flowing back into the room.

[0021] The filter 8 is arranged on the drain pipe below the plugging box 2 to filter impurities in the water in the drain pipe. The filter 8 is provided with an inspection port to inspect and clean the filter, and the inspection port is provided with an inspection cover 9. The inspection cover 9 is threadedly mounted on the inspection port, and a sealing ring is arranged inside the inspection cover to improve the sealing performance of the inspection cover and prevent water leakage.

[0022] When cleaning the filter, unscrew the inspection cover and clean the impurities inside the filter. After cleaning, tighten the inspection cover to ensure the unobstructed flow of the drain pipe.

[0023] The water seal pipe 10 is arranged on the drain pipe below the filter. The water seal pipe 10 is a horizontal S-shaped structure. One end connected to the drain pipe is at a low position, and the other end connected to the main drain pipe is at a high position. The high position of the water seal pipe 10 is lower than the height of the filter 8. In this way, there will always be water at the bottom end of the water seal pipe, thereby realizing the function of preventing odor.

[0024] In the utility model, sewage discharged by the user passes through the plugger, impacts the blocking block in the plugger, is discharged from the drain pipe, is filtered through the filter, and is discharged through the water seal pipe. When the drain pipe is blocked, the sewage is discharged and fills the plugger. After the water level in the plugger increases, the float floats upward, pushing the blocking block into the drain pipe, blocking the drain pipe, and effectively preventing sewage from backflowing.

Claims

1. A drainage device for preventing backflow, characterized in that: The invention comprises a drainage pipe (1) connected to a user's drainage outlet, a plugging box (2) for preventing backflow of water to the user being connected to the drainage pipe (1), a water seal pipe (10) for preventing odor regurgitation being arranged below the plugging box (2), and the bottom end of the water seal pipe (10) being connected to a main drainage pipe; a plugging block (3) for plugging the drainage pipe (1) being arranged in the plugging box (2), a floating body (7) for allowing the plugging block to enter the drainage pipe being arranged at the lower end of the plugging block (3) through a connecting rod (6); a filter (8) for filtering impurities in water being arranged between the plugging box (2) and the water seal pipe (10), an inspection port for inspecting and cleaning the filter being arranged on the filter, and an inspection cover (9) being arranged on the inspection port.

2. A drainage device for preventing backflow according to claim 1, characterized in that: A guide ring (5) for guiding the upward and downward movement of the connecting rod (6) is provided inside the blocking box (2) via a fixing rod (4), and the guide ring is sleeved on the connecting rod (6).

3. A drainage device for preventing backflow according to claim 1, characterized in that: The inspection cover (9) is threadedly mounted on the inspection port of the filter.

4. A drainage device for preventing backflow according to claim 1, characterized in that: A sealing ring for improving the sealing performance is arranged inside the inspection cover (9).

5. A drainage device for preventing backflow according to claim 1, characterized in that: The water seal pipe (10) is a horizontal S-shaped structure, with one end connected to the drainage pipe (1) at a low position and the other end connected to the main drainage pipeline at a high position.

6. A drainage device for preventing backflow according to claim 5, characterized in that: The height of the water seal pipe (10) is lower than the height of the filter (8).

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