CN218508628U

CN218508628U - Water seal floor drain capable of preventing overflow

Info

Publication number: CN218508628U
Application number: CN202222627573.XU
Authority: CN
Inventors: 郑志强; 林静宇; 蔡城; 陈涛; 罗乐贤; 杜顺钊
Original assignee: Guangdong Xiongsu Technology Group Co ltd
Current assignee: Guangdong Xiongsu Technology Group Co ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-02-21
Anticipated expiration: 2032-09-30

Abstract

The utility model relates to the technical field of sewage discharge accessories, in particular to a water seal floor drain capable of preventing overflow back, which comprises a floor drain main body with an opening at the upper part, a ground water leakage sealing cover and a floating ball; the side surface of the floor drain main body is provided with a water outlet, the floor drain water seal cover comprises a cover body, a hollow pipe and a panel assembly, the cover body is internally provided with an installation cavity, the hollow pipe is connected with the bottom of the cover body, the panel assembly is arranged on the cover body, a first water leakage hole communicated with the installation cavity is formed at the joint of the hollow pipe and the bottom of the cover body, the cover body is arranged on the floor drain main body, the lower end of the hollow pipe extends into the floor drain main body, the floating ball is arranged inside the hollow pipe, and the diameter of the first water leakage hole is smaller than that of the floating ball; a first grate is arranged in the cover body, and a vertical warning rod is arranged on the first grate; be provided with the through-hole that is arranged in flowing water entering into the installation cavity on the panel components, still be provided with on the panel components just to the mounting hole of warning pole. The utility model discloses can prevent to return excessive, ensure indoor not receive the invasion and attack of foul smell and virus, and can warn and return abnormal phenomena such as excessive or jam.

Description

Water seal floor drain capable of preventing overflow

Technical Field

The utility model relates to a sewage discharge accessory technical field, more specifically relates to a prevent returning water seal floor drain of excessive.

Background

In the decoration process, drainage needs are needed in many occasions, such as a toilet, a kitchen, a balcony and the like, and floor drains are arranged in the drainage outlets for drainage. The drainage floor drains are connected with a sewer, so that water seals are arranged to prevent odor or bacteria and viruses in the sewer from spreading. When the floor drain with the water seal is not used for a long time, the water seal fails, odor upwells, and the water seal is supplemented at the moment, so that whether the water seal is effective or not can not be known or known in advance.

A Chinese patent document discloses a novel visual floor drain, which comprises a main body, a water sealing cover, an adjusting ring and a flower piece, wherein a water sealing chamber is arranged at the lower end of the main body, a guide rail which extends downwards to the water sealing chamber is arranged in the middle of the flower piece, the floor drain further comprises a floating ball, the floating ball is provided with a pointer corresponding to the guide rail, and the length of the pointer is greater than that of the guide rail. When the water seal chamber of the novel visible floor drain has sufficient water, the pointer protrudes upwards from the upper surface of the flower sheet; when no water flows through or the water seal chamber is blocked for a long time, the protrusion of the pointer cannot be observed, the water seal of the floor drain on the surface is invalid, and water supplement or maintenance is needed. And before the water seal is invalid, water is supplemented to the water seal chamber to prevent the rising of odor in the pipeline, so that the effects of preventing the odor and ensuring the environmental sanitation are achieved.

However, the anti-overflow structure is not designed in the novel visual floor drain, the existing buildings are generally high, the flow of the drainage pipeline is also large, and the pressure fluctuation in the pipeline is relatively increased, so that the novel visual floor drain is easy to return overflow, and abnormal phenomena such as return overflow or blockage can not be warned to occur in the pipeline, so that people can be reminded to check the reasons in time.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is excessive to overcome above-mentioned prior art's visual floor drain returns easily, and also can not warn to take place in the pipeline and return abnormal phenomena such as excessive or jam, reminds people in time to investigate the technical problem of reason, provides a prevent returning excessive water seal floor drain.

In order to solve the technical problem, the utility model discloses a technical scheme is: a water seal floor drain for preventing back overflow comprises a floor drain main body with an upper opening, a ground leakage sealing cover and a floating ball; the side surface of the floor drain main body is provided with a water outlet, the floor drain water seal cover comprises a cover body, a hollow pipe and a panel assembly, the cover body is internally provided with an installation cavity, the hollow pipe is connected with the bottom of the cover body, the panel assembly is installed on the cover body, a first water leakage hole communicated with the installation cavity is formed at the joint of the hollow pipe and the bottom of the cover body, the cover body is installed on the floor drain main body, the lower end of the hollow pipe extends into the floor drain main body, the floating ball is installed inside the hollow pipe, and the diameter of the first water leakage hole is smaller than that of the floating ball; a first grate is arranged in the cover body, and a vertical warning rod is arranged on the first grate; the panel component is provided with a through hole for flowing water to enter the installation cavity, and the panel component is further provided with an installation hole right opposite to the warning rod.

In the technical scheme, the water outlet is communicated with the water drainage pipeline, when water is not drained, liquid is arranged in the hollow pipe, the floating ball is subjected to buoyancy force to block the first water leakage hole, and odor viruses are prevented from entering a room to pollute the indoor air. When water is drained, water enters the mounting cavity through the through hole, the floating ball is impacted by flowing water to form a gap with the first water leakage hole, water can flow into the hollow pipe from the gap between the floating ball and the first water leakage hole, then the water is drained from the water drainage outlet, and the water flows into the water drainage pipeline from the water drainage outlet, so that the water can be drained. When the hollow pipe is filled with water in the drainage pipeline in an overflowing way, the floating ball is forced upwards to block the first water leakage hole, so that the sewage in the drainage pipeline is prevented from overflowing from the first water leakage hole to pollute the indoor environment; and if the user is discharging water at this moment, water flows into the installation cavity from the through hole, and because the first water leakage hole is blocked, water can only be detained in the installation cavity, therefore, the first grate receives upward buoyancy, and simultaneously the warning pole upwards moves from the installation hole, spills the panel assembly upper surface to can warn the user to return to overflow or the floater is invalid and blocks up abnormal phenomena such as the first water leakage hole, remind people in time to investigate and handle, ensure indoor environmental sanitation and safety.

Preferably, the inner diameter of the upper end of the hollow pipe is gradually increased from top to bottom, and the inner diameter of the lower end of the hollow pipe is kept constant from top to bottom.

Preferably, the cover body comprises a supporting plate and a first installation part formed at the outer edge of the supporting plate, the supporting plate and the first installation part form the installation cavity, the first water leakage hole is formed in the supporting plate, and the bottom of the supporting plate is clamped with the upper part of the floor drain main body.

Preferably, the edge of the bottom of the supporting plate protrudes downwards to form a protrusion, the upper part of the floor drain main body is recessed downwards to form a groove, and the protrusion is installed in the groove.

Preferably, the pallet is inclined from the outside in a direction toward the first water leakage holes.

Preferably, a water replenishing port is further formed in the side face of the floor drain main body, the bottom of the hollow pipe is lower than the water outlet in the vertical direction of the floor drain main body, a water replenishing connecting pipe is installed in the water replenishing port, a first interface used for being connected with an automatic water replenishing device and a second interface used for being connected with a liquid level sensor are arranged on the water replenishing connecting pipe, and the automatic water replenishing device is electrically connected with the liquid level sensor.

Preferably, the first grate further comprises a body with a plurality of filtering holes and a supporting part arranged on the lower surface of the body; the supporting part is installed in the installation cavity, and a cavity is formed between the body and the bottom of the cover body.

Preferably, the body is inclined downwards from the outer side of the body to the inner side of the body, and the bottom of the floor drain main body is inclined downwards from the inner side of the floor drain main body to the outer side.

Preferably, the panel assembly comprises a floor drain panel and a second grate provided with the through hole, the lower part of the floor drain panel protrudes to form a second mounting part, and the second mounting part is mounted in the hollow cavity; a second water leakage hole is formed in the floor drain panel, and the second grate is installed in the second water leakage hole; the mounting hole is positioned on the second grate.

Preferably, the joint of the bottom of the floor drain main body and the inner side wall is of an arc structure, the joint of the water outlet and the inner side wall of the floor drain main body is of an arc structure, and the floating ball is of a hollow structure.

Compared with the prior art, the beneficial effects of the utility model are that: the water outlet is communicated with the water drainage pipeline, when water is not drained, liquid is contained in the hollow pipe, the floating ball is subjected to buoyancy to block the first water leakage hole, and odor viruses are prevented from entering a room to pollute the indoor air. When water is drained, water enters the mounting cavity through the through hole, the floating ball is impacted by flowing water, so that a gap is formed between the floating ball and the first water leakage hole, water can flow into the hollow pipe from the gap between the floating ball and the first water leakage hole, then the floor drain is drained from the water drainage outlet, and the water flows into the water drainage pipeline from the water drainage outlet, so that the water can be drained. When the hollow pipe is filled with water in the drainage pipeline in an overflowing way, the floating ball is forced upwards to block the first water leakage hole, so that the sewage in the drainage pipeline is prevented from overflowing from the first water leakage hole to pollute the indoor environment; and if the user is discharging water this moment, water flows into the installation intracavity from the through-hole, because first hole of leaking is stopped up, water can only be detained in the installation intracavity, consequently, first grate receives ascending buoyancy, and the warning pole upwards moves from the installation hole simultaneously, spills the panel components upper surface to can warn the user to return the unusual phenomena such as excessive or the floater is lost efficacy and blocks up first hole of leaking and take place, remind people in time to investigate and handle, guarantee indoor environmental sanitation and safety.

Drawings

FIG. 1 is the overall structure diagram of the overflow-proof water seal floor drain of the utility model;

FIG. 2 is an enlarged view at A in FIG. 1;

fig. 3 is an explosion diagram of the overflow-proof water seal floor drain of the utility model.

In the drawings: 1. a floor drain main body; 11. a water outlet; 12. a water replenishing port; 13. a water replenishing connecting pipe; 131. a first interface; 132. a second interface; 2. a ground leakage water sealing cover; 21. a mounting cavity; 22. a cover body; 221. a support plate; 222. a first mounting portion; 223. a protrusion; 224. a groove; 225. a cavity; 23. a hollow tube; 24. a first water leakage hole; 26. a first grate; 261. a body; 262. a support portion; 263. a warning lever; 27. a panel assembly; 271. a through hole; 272. mounting holes; 273. a floor drain panel; 274. a second grate; 275. a second mounting portion; 276. a second water leakage hole; 3. a floating ball; 4. and sealing the rubber ring.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", "long", "short", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limiting the present patent, and those skilled in the art will understand the specific meaning of the terms according to their specific circumstances.

The technical solution of the present invention is further described in detail by the following specific embodiments in combination with the accompanying drawings:

example 1

A water seal floor drain for preventing overflow back is shown in figures 1, 2 and 3 and comprises a floor drain main body 1 with an upper opening, a floor drain water seal cover 2 and a floating ball; the side surface of the floor drain main body 1 is provided with a water outlet 11, the floor drain water seal cover 2 comprises a cover body 22, a hollow pipe 23 and a panel assembly 27, the cover body 22 is internally provided with an installation cavity 21, the hollow pipe 23 is connected with the bottom of the cover body 22, the panel assembly 27 is installed on the cover body 22, a first water leakage hole 24 communicated with the installation cavity 21 is formed at the connecting part of the hollow pipe 23 and the bottom of the cover body 22, the cover body 22 is installed on the floor drain main body 1, the lower end of the hollow pipe 23 extends into the floor drain main body 1, a floating ball is installed inside the hollow pipe 23, and the diameter of the first water leakage hole 24 is smaller than that of the floating ball; the cover body 22 is internally provided with a first grate 26, and the first grate 26 is provided with a vertical warning rod 263; the panel assembly 27 is provided with a through hole 271 for water flowing into the mounting cavity 21, and the panel assembly 27 is further provided with a mounting hole 272 opposite to the warning rod 263. Specifically, the density of the first grate 26 is less than that of water, so that the first grate 26 can float upwards, the cross sections of the upper end of the floor drain main body 1 and the first mounting part 222 are both circular, and the support plate 221 is also circular. And the diameter of the drain port 11 is larger than that of the first drain hole 24 to ensure smooth drainage.

When the drainage device is used, the drainage port 11 is communicated with a drainage pipeline, when the drainage is not carried out, liquid is filled in the hollow pipe 23, the floating ball is subjected to buoyancy force to block the first water leakage hole 24, and odor viruses are prevented from entering a room to pollute the indoor air. When water is drained, water enters the mounting cavity 21 through the through hole 271, the floating ball 3 is forced by flowing water to form a gap with the first water leakage hole 24, the water can flow into the hollow pipe 23 from the gap between the floating ball 3 and the first water leakage hole 24 and then is drained out of the floor drain from the water drainage port 11, and the water flows into the water drainage pipeline from the water drainage port, so that the water can be drained. When the hollow pipe 23 is filled with water in the drainage pipeline in an overflowing way, the floating ball is forced upwards to block the first water leakage hole 24, so that the sewage in the drainage pipeline is prevented from overflowing from the first water leakage hole 24 to pollute the indoor environment; and if the user is draining at this moment, water flows into the installation cavity 21 from the through hole 271, and because the first water leakage hole 24 is blocked, water can only be detained in the installation cavity 21, therefore, the first grate 26 receives upward buoyancy, and the warning rod 263 moves upward from the installation hole 272 to leak the upper surface of the panel assembly 27, thereby being capable of warning the user of abnormal phenomena such as overflow or the failure of the floating ball to block the first water leakage hole 24, and reminding people of checking and treating in time, and ensuring the indoor environmental sanitation and safety.

As shown in FIG. 1, the inner diameter of the hollow tube 23 is gradually increased from the top to the bottom, and the inner diameter of the hollow tube is kept constant from the top to the bottom. In this embodiment, the upper end of the hollow tube 23 is in a truncated cone shape, that is, the diameter of the cross section of the hollow tube 23 is gradually reduced from the upper end to the lower end, so that the floating ball 3 can be better attached to the hollow tube 23, the contact area between the two is increased, the strength of the hollow tube 23 for bearing the pressure is increased, the upward pressure of the floating ball 23 can be borne, and the anti-overflow effect of the floating ball 23 is ensured; the lower end of the hollow pipe 23 is cylindrical, and a water sealing chamber with larger volume is formed at the bottom of the floor drain main body 1, so that the floating ball 3 is prevented from being separated from the hollow pipe 23.

As shown in fig. 1, the cover body 22 includes a support plate 221 and a first mounting portion 222 formed on an outer edge of the support plate 221, the support plate 221 and the first mounting portion 222 form a mounting cavity 21, the first water leakage hole 24 is formed on the support plate 221, and a bottom of the support plate 221 is clamped with an upper portion of the floor drain main body 1. In this embodiment, the height of the top of the warning rod 263 relative to the supporting plate 221 is equal to or less than the height of the upper surface of the panel assembly 27, when the buoyancy force applied to the first grate 26 is large enough, the first grate 26 can float upward, the warning rod 263 moves upward to expose the upper surface of the panel assembly 27, and abnormal phenomena such as the first water leakage hole 24 is blocked by the user due to overflow or the failure of the floating ball occur, so that people are reminded to perform troubleshooting and safety in the indoor environment are guaranteed. It should be further noted that the supporting plate 221 is clamped on the floor drain main body 1, so that after the floor drain is installed, the rest parts except the floor drain main body 1 can be detached independently for cleaning, and the installation is convenient.

Example 2

This embodiment is similar to embodiment 1, except that as shown in fig. 2, the bottom edge of the support plate 221 is protruded downwards to form a protrusion 223, the upper part of the floor drain body 1 is sunken downwards to form a groove 224, and the protrusion 223 is installed in the groove 224. In this embodiment, the upper edges of the two opposite sidewalls of the groove 224 are rounded, and the lower edges of the two opposite sidewalls of the protrusion 223 are rounded, so that the protrusion 223 can be smoothly installed in the groove 224. Furthermore, a sealing groove 232 is further formed in the side edge of the bulge 223 and used for installing a sealing rubber ring 43, so that the sealing performance of the floor drain is guaranteed, and water leakage is prevented.

As shown in fig. 1, the support plate 221 is inclined from the outside toward the first drain hole 24. Specifically, the supporting plate 221 is circular, the first water leakage hole 24 is located in the center of the supporting plate 221, and the upper surface of the supporting plate 221 is inclined towards the first water leakage hole 24 to accelerate water drainage; and also prevents water from depositing in the installation cavity 21 to cause the first perforated strainer 26 to float upward, thereby falsely warning the overflow prevention phenomenon. The inclination of the support plate 221 of this example is 5 °, and drainage is smoother. The angle is the angle between the horizontal and the surface of the plate 221.

As shown in fig. 1 and 3, a water replenishing port 12 is further arranged on the side surface of the floor drain main body 1, the bottom of the hollow pipe 23 is lower than the water discharge port 11 in the vertical direction of the floor drain main body 1, a water replenishing connecting pipe 13 is installed in the water replenishing port 12, a first interface 131 for connecting an automatic water replenishing device and a second interface 132 for connecting a liquid level sensor are arranged on the water replenishing connecting pipe 13, and the automatic water replenishing device is electrically connected with the liquid level sensor. The height of the lower part of the hollow pipe 23 relative to the bottom surface of the floor drain main body 1 is lower than that of the water outlet relative to the bottom surface of the floor drain main body 1, so that water seal is formed, and the floating ball 3 is blocked by buoyancy force to block the first water leakage hole 24 under the condition that water is not drained. Furthermore, the liquid level sensor can detect the height of the water level in the water seal chamber, when the height of the water level is lower than a set value, the automatic water replenishing device can automatically replenish water, the water seal is prevented from drying up, and the water quality in the water seal can be prevented from deteriorating.

As shown in fig. 1, the first grate 26 further includes a body 261 having a plurality of filtering holes and a support portion 262 provided on a lower surface of the body 261; the support portion 262 is installed in the installation cavity 21, and a cavity 225 is formed between the body 261 and the bottom of the cover 22. The arranged filtering holes can filter impurities, and the impurities are prevented from blocking the first water leakage holes 24; meanwhile, water flows into the cavity 225 and flows into a drainage pipeline through a gap between the first water leakage hole 24 and the floating ball 3. The supporting portion 252 may be a body 261, such that the body 261 and the supporting plate 221 form a cavity 225, and when water is not discharged, a small portion of the water may stay in the cavity 225 to increase the amount of water discharged and prevent the water from depositing on the ground.

As shown in fig. 1, the body 261 is inclined downward from the outside of the body 261 to the inside of the body 261, and the bottom of the floor drain main body 1 is inclined downward from the inside of the floor drain main body 1 to the outside. In this embodiment, the vertical section of the body 261 is a V-shaped structure. Specifically, the body 261 is disc-shaped, the warning rod 263 is located at the center of the body 261, and the upper surface of the body 261 inclines towards the center, so that the water drainage is facilitated and accelerated. In the embodiment, the section of the bottom of the floor drain main body 1 in the vertical direction is of an inverted V-shaped structure; the water in the hollow pipe 23 flows out from top to bottom, and the inclined surface is more convenient for water drainage; specifically, the included angle between the inclined plane and the horizontal plane is 3 DEG

Example 3

This embodiment is similar to any of the above embodiments, except that, as shown in fig. 1 and 3, the panel assembly 27 comprises a floor drain panel 273 and a second grate 274 provided with a through hole 271, a second mounting part 275 is formed by protruding the lower part of the floor drain panel 273, and the second mounting part 275 is mounted in the hollow cavity; the floor drain panel 273 is provided with a second water leakage hole 276, and the second grate 274 is arranged in the second water leakage hole 276; the mounting hole 272 is located on the second grate 274. Wherein, the second grate 274 can filter the impurity in the sewage to prevent the impurity from entering the installation cavity 21, and if the second grate 274 does not filter the impurity, the first grate 26 also filters to prevent the impurity from entering the hollow tube 23, thereby blocking the water outlet 11. Specifically, the outer side wall of the second mounting portion 275 is attached to the inner side wall of the first mounting portion 222, and the diameter of the water outlet 11 is larger than that of the second water leakage hole 276, so that smooth water drainage is ensured, and the liquid level is in a normal state. Furthermore, the center of the second grate 274 is provided with a mounting hole 272 for the warning rod 263 to move up and down to expose the floor drain panel 273, and the diameter of the mounting hole 272 is larger than that of the warning rod 263. The first grate 26 and the floor drain panel 273 are made of metal, and the second grate 274 is made of light heat-resistant plastic; the ground leakage sealing cover 2 is made of rigid plastic or metal, the sealing rubber ring 4 and the floating ball 3 are made of antibacterial heat-resistant light plastic, and the floor drain main body 1 is made of rigid plastic or metal.

As shown in figure 1, the joint of the bottom and the inner side wall of the floor drain main body 1 is of an arc structure, the joint of the water outlet 11 and the inner side wall of the floor drain main body 1 is of an arc structure, and the floating ball 3 is of a hollow structure. The floating ball 3 with a hollow structure has stronger buoyancy and can quickly block the first water leakage hole 24. The circular arc structure makes the flow passage part in a streamline shape, the fluid resistance is low, and dirt is not easy to stick.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A water seal floor drain for preventing back overflow comprises a floor drain main body (1) with an upper opening, a floor drain water seal cover (2) and a floating ball; the floor drain is characterized in that the ground leakage sealing cover (2) comprises a cover body (22) with an installation cavity (21) arranged inside, a hollow pipe (23) connected with the bottom of the cover body (22) and a panel assembly (27) installed on the cover body (22), a first water leakage hole (24) communicated with the installation cavity (21) is formed at the connection position of the hollow pipe (23) and the bottom of the cover body (22), the cover body (22) is installed on the floor drain main body (1), the lower end of the hollow pipe (23) extends into the floor drain main body (1), the floating ball is installed inside the hollow pipe (23), and the diameter of the first water leakage hole (24) is smaller than that of the floating ball; a first grate (26) is arranged in the cover body (22), and a vertical warning rod (263) is arranged on the first grate (26); the panel component (27) is provided with a through hole (271) for flowing water to enter the installation cavity (21), and the panel component (27) is further provided with an installation hole (272) opposite to the warning rod (263).

2. The overflow-proof water seal floor drain according to claim 1, wherein the inner diameter of the upper end of the hollow pipe (23) is gradually increased from top to bottom, and the inner diameter of the lower end is kept constant from top to bottom.

3. The overflow-proof water seal floor drain according to claim 1, wherein the cover body (22) comprises a supporting plate (221) and a first mounting portion (222) formed on the outer edge of the supporting plate (221), the supporting plate (221) and the first mounting portion (222) form the mounting cavity (21), the first water leakage hole (24) is formed in the supporting plate (221), and the bottom of the supporting plate (221) is clamped with the upper portion of the floor drain main body (1).

4. The overflow-proof water seal floor drain of claim 3, wherein the bottom edge of the supporting plate (221) protrudes downwards to form a protrusion (223), the upper part of the floor drain main body (1) is recessed downwards to form a groove (224), and the protrusion (223) is installed in the groove (224).

5. The overflow-proof water seal floor drain according to claim 3, wherein the supporting plate (221) is inclined from the outside to the direction of the first water leakage hole (24).

6. The anti-overflow water seal floor drain according to claim 1, wherein a water replenishing port (12) is further arranged on the side surface of the floor drain main body (1), the bottom of the hollow pipe is lower than the water outlet (11) in the vertical direction of the floor drain main body (1), a water replenishing connecting pipe (13) is installed in the water replenishing port (12), a first interface (131) for connecting an automatic water replenishing device and a second interface (132) for connecting a liquid level sensor are arranged on the water replenishing connecting pipe (13), and the automatic water replenishing device is connected with the liquid level sensor.

7. The overflow-proof water-seal floor drain of claim 1, wherein the first grate (26) further comprises a body (261) having a plurality of filtering holes and a support part (262) provided on the lower surface of the body (261); the supporting part (262) is installed in the installation cavity (21), and a cavity (225) is formed between the body (261) and the bottom of the cover body (22).

8. The overflow-proof water seal floor drain of claim 7, wherein the body (261) is inclined downwards from the outside of the body (261) to the inside of the body (261), and the bottom of the floor drain main body (1) is inclined downwards from the inside of the floor drain main body (1) to the outside.

9. The anti-overflow back water seal floor drain according to claim 1, wherein the panel assembly (27) comprises a floor drain panel (273) and a second grate (274) provided with the through hole (271), the lower part of the floor drain panel (273) protrudes to form a second mounting part (275), and the second mounting part (275) is mounted in the mounting cavity; a second water leakage hole (276) is formed in the floor drain panel (273), and the second grate (274) is installed in the second water leakage hole (276); the mounting hole (272) is located on the second grate (274).

10. The anti-overflow-back water seal floor drain according to claim 1, wherein the joint of the bottom and the inner side wall of the floor drain main body (1) is of an arc structure, the joint of the drain outlet (11) and the inner side wall of the floor drain main body (1) is of an arc structure, and the floating ball is of a hollow structure.