Double-layer anti-backwater floor drain

Abstract

The utility model belongs to the technical field of floor drains, and particularly relates to a double-layer anti-backwater floor drain which comprises a floor drain body and a cover plate, a floor drain core is connected between an upper end opening of the floor drain body and the cover plate, a connecting opening used for installing a connector is formed in the upper end of the floor drain core, and an inner cylinder and an outer cylinder are formed at the lower end of the floor drain core respectively. A first flow channel is arranged in the inner barrel, a second flow channel is arranged between the inner barrel and the outer barrel, and an opening communicated with the second flow channel is formed in the side wall of the outer barrel. Through the design of the connector, water equipment such as a washing machine drainage pipe and a dish washing machine drainage pipe can be connected with a floor drain for use, and water backflow of the drainage pipes is effectively prevented; water on the ground can flow into the sewer pipe through the opening, drainage can be achieved at the same time, when the water flow in the first flow channel is too large, part of the water flow enters the sewer pipe through the second flow channel, and therefore the water flow is effectively prevented from flowing back from the interior of the floor drain core.

Description

Technical Field

[0001] The utility model relates to the technical field of floor drains, and particularly refers to a double-layer anti-backflow floor drain. Background Art

[0002] A floor drain is an important interface installed at the head end of a drainage pipe, connecting the drainage pipe and the ground. During the discharge of indoor sewage, it first needs to be discharged downward through the floor drain into the interior of the drainage system. The structure and performance of the floor drain affect the air quality and drainage efficiency of the indoor environment. A good floor drain can effectively prevent the odor in the pipe from surging up and avoid blockage in the pipe.

[0003] For example, in a Chinese utility model with the patent number CN200720190494.X, the disclosed double-layer sealed floor drain includes a cover plate, a housing, and a drain core; the cover plate is buckled on the upper end of the housing, and drain holes are provided on the cover plate; the drain core is composed of an upper sleeve section and a lower water seal bowl. The lower end of the sleeve section extends into the water seal bowl to form a water seal structure. The drain core is detachably inserted into the housing through its upper sleeve section, and there is an airtight connection between the outer edge of its upper sleeve section and the inner wall of the housing; the inner cavity of the housing is a stepped structure with a larger upper part and a smaller lower part. A normally closed mechanical seal door is provided on the inner wall of the housing below the drain core, and the seal door can be automatically opened under the action of the gravity of the water flow. The lower end of the housing is a connection end connected to the sewer pipe.

[0004] The structural design of this floor drain enables it to only discharge the water on the ground and cannot be used to connect the drain pipes of other devices. Therefore, its usage scenario is relatively single, the structure is complex, and its structure needs to be further improved. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a double-layer anti-backflow floor drain, which solves the problems of complex existing structure and single function through the setting of inner and outer cylinders.

[0006] The purpose of the utility model is achieved as follows: A double-layer anti-backflow floor drain includes a floor drain main body and a cover plate. A floor drain core is connected between the upper port of the floor drain main body and the cover plate. A connection port for installing a connector is opened at the upper end of the floor drain core. An inner cylinder and an outer cylinder are respectively formed at the lower end of the floor drain core. A first flow channel is arranged inside the inner cylinder, a second flow channel is arranged between the inner cylinder and the outer cylinder, and an opening communicating with the second flow channel is arranged on the side wall of the outer cylinder.

[0007] Preferably, an annular clamping portion is formed on the outer periphery of the upper end of the floor drain core, an L-shaped clamping block is arranged on the side wall of the upper end of the floor drain core, and an installation port is opened in the cover plate. An installation notch and a clamping plate are respectively formed on the inner periphery of the installation port.

[0008] Preferably, an internal thread is formed on the inner periphery of the upper port of the floor drain main body, and an external thread matching the internal thread is formed on the outer periphery of the lower end of the outer cylinder.

[0009] Preferably, the floor drain main body includes a housing, a baffle is installed at the lower port of the housing, one side of the baffle is rotatably connected to the housing, a first magnet is arranged on one side of the baffle, a second magnet for adsorbing the first magnet is arranged on one side of the housing, a fixing plate is installed on the upper end surface of the baffle, and a sealing ring is arranged between the fixing plate and the outer periphery of the baffle.

[0010] Preferably, a plurality of blocking portions are formed on the outer periphery of the cover plate, and a first flow hole is formed between two adjacent blocking portions.

[0011] Preferably, a plurality of second flow holes are formed in the cover plate.

[0012] The prominent and beneficial technical effects of the present utility model compared with the prior art are:

[0013] Through the design of the connector, the present utility model enables water-using devices such as washing machine drain pipes and dishwasher drain pipes to be connected to the floor drain for use, effectively preventing the backflow of their drain pipes, and the water on the ground can flow into the sewer pipe through the opening, achieving drainage at the same time. When the water flow in the first flow channel is too large, part of the water flow will enter the sewer pipe through the second flow channel, thereby effectively preventing the water flow from flowing back from the floor drain core. Description of the Drawings

[0014] Figure 1 is a schematic structural view of the present utility model Figure 1 .

[0015] Figure 2 is a schematic structural view of the present utility model Figure 2 .

[0016] Figure 3 is a schematic structural view of the present utility model Figure 3 .

[0017] Figure 4 is a schematic top view structural diagram of the present utility model.

[0018] Figure 5 is Figure 4 a schematic cross-sectional structural view at A-A in

[0019] Figure 6 is Figure 4 a schematic cross-sectional structural view at B-B in

[0020] Figure 7 is a schematic structural view of the cover plate and the floor drain core.

[0021] Figure 8 is a schematic structural view of the present utility model Figure 4 .

[0022] Figure 9Structural schematic diagram of the present utility model Figure 5 。

[0023] Figure 10 Structural schematic diagram of the present utility model Figure 6 。

[0024] Reference numerals: 1 - floor drain main body; 2 - cover plate; 3 - floor drain core; 4 - connector; 5 - connection port; 6 - inner cylinder; 7 - outer cylinder; 8 - flow channel one; 9 - flow channel two; 10 - opening; 11 - annular clamping portion;

[0025] 12 - L-shaped clamping block; 13 - installation port; 14 - installation notch; 15 - clamping plate; 16 - internal thread; 17 - external thread; 18 - housing; 19 - baffle; 20 - magnet one; 21 - magnet two; 22 - fixing plate; 23 - sealing ring;

[0026] 24 - blocking portion; 25 - flow hole one; 26 - flow hole two. Detailed implementation manners

[0027] The following further elaborates on the detailed implementation manners of the present utility model in conjunction with the accompanying drawings.

[0028] As Figure 1-7 shown, a double-layer anti-backflow floor drain includes a floor drain main body 1 and a cover plate 2. A floor drain core 3 is connected between the upper port of the floor drain main body 1 and the cover plate 2. A connection port 5 for installing a connector 4 is provided at the upper end of the floor drain core 3. The connector 4 can be a two-way connector or a three-way connector, so as to connect the drain pipes of water-using devices such as washing machine drain pipes and dishwasher drain pipes. The lower end of the floor drain core 3 is respectively formed with an inner cylinder 6 and an outer cylinder 7. A flow channel one 8 is arranged inside the inner cylinder 6, a flow channel two 9 is arranged between the inner cylinder 6 and the outer cylinder 7, and an opening 10 communicating with the flow channel two 9 is provided on the side wall of the outer cylinder 7 for draining water on the ground.

[0029] Through the design of the connector, the present utility model enables water-using devices such as washing machine drain pipes and dishwasher drain pipes to also be connected to the floor drain for use, effectively preventing the backflow of their drain pipes. The water on the ground can flow into the sewer through the opening 10, and drainage can be achieved simultaneously. When the water flow in the flow channel one 8 is too large, part of the water flow will enter the sewer through the flow channel two 9, thereby effectively preventing the water flow from flowing back from the floor drain core 3.

[0030] Moreover, the connector can be arbitrarily replaced with other various forms of connection joints, and the installation direction can be rotated and adjusted as needed. As Figure 1 shown, it is a two-way connector. As Figure 3 shown, it can connect two sewer pipes. As Figure 8 、 9 shown, it can connect three sewer pipes.

[0031] Combined with Figure 5 and Figure 7 , an annular clamping portion 11 is formed on the outer periphery of the upper end of the floor drain core 3, and an L-shaped clamping block 12 is arranged on the side wall of the upper end of the floor drain core 3. An installation opening 13 is formed in the cover plate 2, and an installation notch 14 and a clamping plate 15 are respectively formed on the inner periphery of the installation opening 13. During actual installation, by rotating and clamping the clamping plate 15 into the L-shaped clamping block 12, the connection between the floor drain core 3 and the cover plate 2 can be realized. This connection structure is simple, convenient to disassemble and assemble, so as to facilitate the replacement of cover plates of different specifications for use.

[0032] Combined with Figure 6 and Figure 7 , an internal thread 16 is formed on the inner periphery of the upper port of the floor drain main body 1, and an external thread 17 matching the internal thread 16 is formed on the outer periphery of the lower end of the outer cylinder 7. The floor drain main body 1 and the floor drain core 3 are detachably connected by threads.

[0033] Specifically, see Figure 6 , the floor drain main body 1 includes a housing 18, a baffle 19 is installed at the lower port of the housing 18, one side of the baffle 19 is rotatably connected to the housing 18, a magnet one 20 is arranged on one side of the baffle 19, and a magnet two 21 for adsorbing the magnet one 20 is arranged on one side of the housing 18. When there is no water flow, the magnet one and the magnet two are adsorbed together, and the baffle 19 closes the lower port, thereby preventing the odor from leaking out of the sewer pipe. A fixing plate 22 is installed on the upper end surface of the baffle 19, and a sealing ring 23 is arranged between the fixing plate 22 and the outer periphery of the baffle 19 to further improve the sealing performance.

[0034] A plurality of blocking portions 24 are formed on the outer periphery of the cover plate 2, which can effectively block hair from entering the sewer pipe. An overflow hole one 25 is formed between two adjacent blocking portions 24 for the water on the ground to drain into the sewer pipe through the overflow hole one 25.

[0035] Specifically, see Figure 2 , a plurality of overflow holes two 26 are formed in the cover plate 2 for the water on the ground to drain into the sewer pipe through the overflow holes two 26.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-layer anti-backflow floor drain, characterized in that, It includes a floor drain main body (1) and a cover plate (2). A floor drain core (3) is connected between the upper port of the floor drain main body (1) and the cover plate (2). A connection port (5) for installing a connector (4) is opened at the upper end of the floor drain core (3). An inner cylinder (6) and an outer cylinder (7) are respectively formed at the lower end of the floor drain core (3). A first flow channel (8) is arranged inside the inner cylinder (6). A second flow channel (9) is arranged between the inner cylinder (6) and the outer cylinder (7). An opening (10) communicating with the second flow channel (9) is opened on the side wall of the outer cylinder (7).

2. The double-layer anti-backflow floor drain according to claim 1, characterized in that: An annular clamping portion (11) is formed on the outer periphery of the upper end of the floor drain core (3). An L-shaped clamping block (12) is arranged on the side wall of the upper end of the floor drain core (3). An installation opening (13) is opened inside the cover plate (2). An installation notch (14) and a clamping plate (15) are respectively formed on the inner periphery of the installation opening (13).

3. The double-layer anti-backflow floor drain according to claim 1, wherein: Internal threads (16) are formed on the inner periphery of the upper port of the floor drain main body (1). External threads (17) matching the internal threads (16) are formed on the outer periphery of the lower end of the outer cylinder (7).

4. The double-layer anti-backflow floor drain according to claim 1, wherein: The floor drain main body (1) includes a housing (18). A baffle (19) is installed at the lower port of the housing (18). One side of the baffle (19) is rotatably connected to the housing (18). A first magnet (20) is arranged on one side of the baffle (19). A second magnet (21) for adsorbing the first magnet (20) is arranged on one side of the housing (18). A fixing plate (22) is installed on the upper end surface of the baffle (19). A sealing ring (23) is arranged between the fixing plate (22) and the outer periphery of the baffle (19).

5. The double-layer anti-backflow floor drain according to claim 1, characterized in that: A plurality of blocking portions (24) are formed on the outer periphery of the cover plate (2). A first flow-through hole (25) is opened between two adjacent blocking portions (24).

6. The double-layer anti-backflow floor drain according to claim 1, characterized in that: A plurality of second flow-through holes (26) are opened inside the cover plate (2).

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