Anti-backflow drainage pipe

Abstract

The utility model discloses an anti-backflow drainage pipe, and particularly relates to the technical field of drainage pipes, the anti-backflow drainage pipe comprises a water pipe, the right end of the water pipe is fixedly connected with a water filtering device, the left end of the water pipe is fixedly connected with a flow slowing device, and the flow slowing device is vertically and symmetrically provided with first connecting plates; the left end of the first connecting plate is movably connected with a second connecting plate, the right end of the first connecting plate is movably connected with a bolt, the left end of the second connecting plate is fixedly connected with an anti-backflow device, and the left end of the anti-backflow device is fixedly connected with a water outlet. Incoming sewage can be preliminarily filtered, impurities in the sewage can be effectively separated from water, dirt is prevented from entering a water pipe to cause blockage, the service life is prevented from being affected, the situation that equipment is damaged due to too large water flow impact can be prevented through flow division, sewage backflow can be prevented, backflow is automatically restrained through water potential, and more time and labor are saved. And the practical value of equipment is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drainage pipes, in particular to a drainage pipe for preventing backflow. Background Art

[0002] In existing residential or commercial buildings, the drainage system usually includes a series of pipes to transport wastewater from sanitary facilities, kitchens or industrial equipment to the main sewer. However, when the main sewer is blocked or flooded, there is a risk of sewage flowing back into the room through the drainage pipes, which not only causes property damage and health threats, but also may cause environmental pollution problems. Therefore, there is an urgent need for a drainage device that can effectively prevent such backflow.

[0003] Chinese patent document CN203080630U discloses a drain pipe that prevents backflow. It includes a faucet, a bracket, a wash basin, a main drainage pipe, a valve, and left and right drainage pipes. The bracket is provided with a wash basin, the wash basin is provided with a faucet, the wash basin is provided with a main drainage pipe under the wash basin, the main drainage pipe is provided with a left drainage pipe and a right drainage pipe under the main drainage pipe, and the drainage pipe is provided with a valve. The two-way drainage pipe of the wash basin of the utility model is divided into two pipes under the drainage pipe of the wash basin, which are respectively controlled by two valves. The left pipe extends into the bucket and the right pipe extends into the sewer. When it is necessary to leave the water after washing hands, close the right pipe valve and open the left pipe valve, and the water flows into the bucket; when it is not necessary to leave the water for washing face, close the left pipe valve and open the right pipe valve, and the water flows into the sewer, which can save a lot of water.

[0004] Although the equipment in the above-mentioned document can drain water in both directions, the equipment has a relatively simple structure, cannot filter and is easily clogged, is inconvenient to clean and increases the labor burden, and cannot effectively prevent backflow, thereby reducing the practical value of the equipment. Utility Model Content

[0005] The main purpose of the utility model is to provide a drainage pipe that prevents backflow, which can effectively solve the above-mentioned problems.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A backflow prevention drainage pipe comprises a water pipe, wherein the right end of the water pipe is fixedly connected to a water filter device, the left end of the water pipe is fixedly connected to a flow-slowing device, the flow-slowing device is symmetrically provided with a first connecting plate above and below, the left end of the first connecting plate is movably connected to a second connecting plate, the right end of the first connecting plate is movably connected to a bolt, the left end of the second connecting plate is fixedly connected to the backflow prevention device, and the left end of the backflow prevention device is fixedly connected to a water outlet;

[0008] The water filter device comprises a water filter cartridge, the left end of which is fixedly connected to the right end of the water pipe;

[0009] The slow flow device comprises a water inlet pipe, the right end of which is fixedly connected to the left end of the water pipe;

[0010] The backflow prevention device comprises a valve body, and the right end of the valve body is movably connected to the left end of the flow-reducing device.

[0011] Preferably, a sealing sleeve is provided at the joint of the water pipe.

[0012] Preferably, the inner wall of the water filter cartridge is movably connected to a water filter basket, the middle of the water filter basket is movably connected to a movable shaft, the upper end of the movable shaft is fixedly connected to a brush plate, and the upper end of the water filter cartridge is movably connected to a cover.

[0013] Preferably, a slot is provided on the inner wall of the water filter cartridge.

[0014] Preferably, overflow chambers are symmetrically arranged on both sides of the water inlet pipe, and the lower end of the overflow chamber is fixedly connected to a water outlet pipe.

[0015] Preferably, an overflow port is provided at the upper portion of the outer wall of the water outlet pipe, and a water diversion head is fixedly connected to the upper end of the water outlet pipe.

[0016] Preferably, the upper end of the valve body is movably connected to a valve cover, the middle part of the lower end of the valve cover is fixedly connected to a spring, and the lower end of the spring is fixedly connected to a valve flap.

[0017] Preferably, a sealing ring is provided below the valve flap.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. The utility model provides a drainage pipe for preventing backflow. The equipment is equipped with a water filter device, by which the incoming sewage can be preliminarily filtered, and impurities in the sewage can be effectively separated from water, so as to prevent dirt from entering the water pipe and causing blockage to affect the service life. A card slot is provided on the inner wall of the water filter cylinder, which is convenient for quick loading and unloading of the water filter basket. Impurities can be filtered through the water filter basket, and the brush plate can be movable through the movable shaft. When water flows through, it can be rotated to automatically clean the filter hole. The top of the device is covered by a cover, and the threaded connection is convenient for loading and unloading.

[0020] 2. The utility model provides a drainage pipe to prevent backflow. The equipment is equipped with a slow-flow device, which can automatically divert the sewage passing through, thereby preventing the equipment from being damaged by excessive water impact and playing a certain protective role. The sewage is diverted through a water diversion head and stored in an overflow chamber. When the liquid level reaches a certain height, the sewage can be discharged along the outlet pipe through the overflow port, thereby buffering the water potential.

[0021] 3. The utility model provides a drainage pipe with anti-backflow, which is equipped with an anti-backflow device. The device can prevent sewage from backflowing, and the backflow can be automatically curbed by water potential, which saves time and effort and brings convenience to users, and effectively improves the practical value of the equipment. The two ends of the valve body are fixed by connecting plates and bolts, and the sealing setting at the connection can prevent leakage. When sewage passes through, the valve disc can be lifted to facilitate the discharge of sewage. The valve disc can be reset by a spring to block and prevent sewage from backflowing. The sealing ring is used to avoid leakage at the joint. The valve cover is easy to assemble and disassemble to facilitate maintenance by staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the water filter device of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the slow flow device of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the backflow prevention device of the utility model;

[0026] Figure 5 It is a side structural schematic diagram of the utility model.

[0027] In the figure: 1. water pipe; 2. water filtering device; 21. water filter cartridge; 22. water filter basket; 23. movable shaft; 24. brush plate; 25. cover; 3. slow flow device; 31. water inlet pipe; 32. overflow chamber; 33. water outlet pipe; 34. overflow port; 35. water diverter; 4. first connecting plate; 5. second connecting plate; 6. bolts; 7. backflow prevention device; 71. valve body; 72. valve cover; 73. spring; 74. valve disc; 75. sealing ring; 8. water outlet. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0029] like Figure 1 and Figure 5As shown, a backflow prevention drainage pipe comprises a water pipe 1, the right end of the water pipe 1 is fixedly connected with a water filtering device 2, by which the incoming sewage can be preliminarily filtered, and impurities in the sewage can be effectively separated from water, so as to prevent dirt from entering the water pipe and causing blockage and affecting the service life; the left end of the water pipe 1 is fixedly connected with a slow-flow device 3, by which the passing sewage can be automatically diverted, so as to prevent the excessive impact of the water flow from damaging the equipment, and play a certain protective role; the slow-flow device 3 is symmetrically provided with a first connecting plate 4 above and below, the left end of the first connecting plate 4 is movably connected with a second connecting plate 5, the right end of the first connecting plate 4 is movably connected with a bolt 6, and the left end of the second connecting plate 5 is fixedly connected with an anti-backflow device 7, by which the sewage can be prevented from backflowing, and the backflow can be automatically curbed by the water potential, which saves time and effort and brings convenience to the user, and effectively improves the practical value of the equipment; the left end of the anti-backflow device 7 is fixedly connected with a water outlet 8;

[0030] The water filter device 2 includes a water filter cartridge 21, the left end of which is fixedly connected to the right end of the water pipe 1 to filter impurities;

[0031] The slow flow device 3 includes a water inlet pipe 31, the right end of which is fixedly connected to the left end of the water pipe 1 for flow diversion and buffering;

[0032] The backflow prevention device 7 includes a valve body 71, the right end of the valve body 71 is movably connected to the left end of the slow flow device 3 to prevent backflow;

[0033] A sealing sleeve is provided at the joint of the water pipe 1 to prevent leakage.

[0034] like Figure 2 As shown, the inner wall of the water filter cartridge 21 is movably connected with a water filter basket 22, the middle part of the water filter basket 22 is movably connected with a movable shaft 23, the upper end of the movable shaft 23 is fixedly connected with a brush plate 24, the upper end of the water filter cartridge 21 is movably connected with a cover 25, the inner wall of the water filter cartridge 21 is provided with a card slot, the inner wall of the water filter cartridge 21 is provided with a card slot, which is convenient for quick loading and unloading of the water filter basket 22, impurities can be filtered through the water filter basket 22, the brush plate 24 can be movable through the movable shaft 23, and can be rotated when water flows through to automatically clean the filter hole, the upper part of the device is covered by the cover 25, and the threaded connection is convenient for loading and unloading;

[0035] like Figure 3 As shown, overflow chambers 32 are symmetrically arranged on both sides of the water inlet pipe 31, and the lower end of the overflow chamber 32 is fixedly connected to a water outlet pipe 33, and an overflow port 34 is opened on the upper part of the outer wall of the water outlet pipe 33, and a water diversion head 35 is fixedly connected to the upper end of the water outlet pipe 33. The sewage is diverted by the water diversion head 35, and the overflow chamber 32 is used to store the sewage. When the liquid level reaches a certain height, the sewage can be discharged along the water outlet pipe 33 through the overflow port 34, thereby buffering the water potential;

[0036] like Figure 4As shown, the upper end of the valve body 71 is movably connected to the valve cover 72, and the middle part of the lower end of the valve cover 72 is fixedly connected to a spring 73, and the lower end of the spring 73 is fixedly connected to a valve flap 74. A sealing ring 75 is provided below the valve flap 74. The two ends of the valve body 71 are fixed by connecting plates and bolts. The sealing arrangement at the connection can prevent leakage. When sewage passes through, the valve flap 74 can be lifted up to facilitate the discharge of sewage. The valve flap 74 can be reset by the spring 73 to block it and prevent sewage from backflowing. The sealing ring 75 is used to avoid leakage at the joint. The valve cover 72 is easy to load and unload, which is convenient for staff to overhaul.

[0037] The working principle of the utility model is as follows: through the water filtering device 2, a card slot is opened on the inner wall of the water filter cartridge 21 for easy loading and unloading of the water filter basket 22. When water flows through, impurities are filtered through the water filter basket 22, and the brush plate 24 is driven to rotate to clean the filter holes. By using the slow flow device 3, sewage enters the device from the water inlet pipe 31, and flows into the overflow chambers 32 on both sides through the water diversion head 35. When the liquid level reaches a certain height, it can flow out along the water outlet pipe 33 through the overflow port 34 to buffer the water potential. Through the anti-backflow device 7, the water flow impacts the valve flap 74 to lift it up and discharge it. When there is no need to drain, the valve flap 74 is reset by the spring 73 to cover the pipe mouth to prevent sewage from backflowing. It is very convenient to use.

[0038] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A drainage pipe for preventing backflow, comprising a water pipe (1), characterized in that: The right end of the water pipe (1) is fixedly connected to a water filter device (2), the left end of the water pipe (1) is fixedly connected to a slow-flow device (3), the slow-flow device (3) is symmetrically provided with a first connecting plate (4) above and below, the left end of the first connecting plate (4) is movably connected to a second connecting plate (5), the right end of the first connecting plate (4) is movably connected to a bolt (6), the left end of the second connecting plate (5) is fixedly connected to an anti-backflow device (7), and the left end of the anti-backflow device (7) is fixedly connected to a water outlet (8); The water filtering device (2) comprises a water filtering cartridge (21), the left end of the water filtering cartridge (21) being fixedly connected to the right end of the water pipe (1); The slow flow device (3) comprises a water inlet pipe (31), the right end of the water inlet pipe (31) being fixedly connected to the left end of the water pipe (1); The backflow prevention device (7) comprises a valve body (71), the right end of the valve body (71) being movably connected to the left end of the flow-slowing device (3).

2. The anti-backflow drainage pipe according to claim 1, characterized in that: A sealing sleeve is provided at the joint of the water pipe (1).

3. The anti-backflow drainage pipe according to claim 1, characterized in that: The inner wall of the water filter cartridge (21) is movably connected to a water filter basket (22), the middle of the water filter basket (22) is movably connected to a movable shaft (23), the upper end of the movable shaft (23) is fixedly connected to a brush plate (24), and the upper end of the water filter cartridge (21) is movably connected to a cover (25).

4. The anti-backflow drainage pipe according to claim 3, characterized in that: The inner wall of the water filter cartridge (21) is provided with a slot.

5. The anti-backflow drainage pipe according to claim 1, characterized in that: Overflow chambers (32) are symmetrically arranged on both sides of the water inlet pipe (31), and the lower end of the overflow chamber (32) is fixedly connected to a water outlet pipe (33).

6. The anti-backflow drainage pipe according to claim 5, characterized in that: An overflow port (34) is provided on the upper portion of the outer wall of the water outlet pipe (33), and a water diversion head (35) is fixedly connected to the upper end of the water outlet pipe (33).

7. The anti-backflow drainage pipe according to claim 1, characterized in that: The upper end of the valve body (71) is movably connected to a valve cover (72), the middle part of the lower end of the valve cover (72) is fixedly connected to a spring (73), and the lower end of the spring (73) is fixedly connected to a valve flap (74).

8. The anti-backflow drainage pipe according to claim 7, characterized in that: A sealing ring (75) is provided below the valve flap (74).

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