A multi-functional floor drain

Abstract

The present invention discloses a multifunctional floor drain, which includes a base, a floor drain body, a water seal member and a grate. A first drain opening is formed at the bottom of the base. The floor drain body includes an outer wall and an inner wall. The inner wall and the outer wall are connected to form a U-shaped water seal cavity. A Π-shaped water seal member is also buckled at the upper end of the inner wall. A water collection opening is provided at the top end of the inner wall. The inner side of the inner wall encloses a floor drain central cavity. A hanging anti-backflow ball is arranged in the floor drain central cavity. The hanging anti-backflow ball can move upward unidirectionally to block the water collection opening. A second drain opening is formed at the bottom of the floor drain central cavity of the inner wall. A seesaw sealing device that can only open the second drain opening downward is arranged at the position of the second drain opening. An alarm device is also included. A non-contact angle sensor is arranged at the rotating shaft of the seesaw sealing device and is connected to the alarm device to give an alarm when the rotating shaft rotates. The present invention enables the floor drain to have the capabilities of preventing odor, preventing backflow and overflow, preventing insects and alarming, and increases the diversity of product functions.

Description

Technical Field

[0001] The present invention relates to the technical field of floor drains, and particularly to a multifunctional floor drain. Background Art

[0002] A floor drain is an important interface connecting the drainage system in a residence and the indoor floor. The functions such as odor prevention and the quality of the floor drain directly affect the indoor air quality because the drain pipe and septic tank of the floor drain are connected to the living space. The old-fashioned floor drain relies on the formed water seal to separate the living space and the pipe system. If the water seal of the floor drain fails or the seal of the non-water-sealed floor drain is not tightly closed, there will be no barrier between the sewer and the indoor space, and the toxic and harmful gases such as CO2, CO, methane, skatole, and hydrogen sulfide in the sewer will escape from the floor drain along the pipe and disperse in the living room, making people feel uncomfortable.

[0003] The following are several commonly used floor drains at home and abroad: 1. Water-sealed floor drain: The traditional water-sealed floor drain has a bell-shaped structure, like an inverted bowl structure buckled on the sewer outlet, forming a "U"-shaped water seal. The "water seal" in the water seal is used to achieve the sealing effect. The water seal of most water-sealed floor drains is shallow and the water sealing volume is too small, which will dry up and cause odor return due to factors such as time and dry weather; moreover, the deeper the water seal height, the more it will affect the drainage speed, the deposition of dirt will be more serious, and it is difficult to clean. 2. Eccentric block type sealed floor drain: That is, a sealing gasket is used, fixed on one side with a pin, and the gravity eccentric principle is used for sealing. First, the closure is not tight, and second, the pin is easily damaged, resulting in failure. 3. Spring type sealed floor drain: It is divided into an upper spring type and a lower spring type. The upper spring type is to press the cover plate, and the cover plate pops up. When pressed again, it will reset; the lower spring type is to use a spring to stretch the sealing gasket at the lower end of the sealing core for sealing. Since the spring is made of boron iron, it is easy to rust, the elasticity gradually weakens until it fails, and the service life is not long. In addition, the spring is easy to entangle hair and fabrics and is not easy to clean. 4. Magnet type sealed floor drain: Two magnets are used to attract and seal the sealing gasket. Due to the very poor quality of the ground water, such as various reasons like washing items and mopping the floor, the sewage will contain some iron impurities that are adsorbed on the magnet. After a period of time, the impurity layer will cause the sealing gasket to not close. In addition, due to the action of the earth's magnetic field, the magnetic force will also gradually decay. 5. Silicone type sealed floor drain: Two silicones are used for sealing. During the drainage process, dirt remains at the two silicone pieces to form a gap, and the odor still escapes.

[0004] That is, the existing floor drains have poor odor prevention effect. At the same time, the existing floor drains do not have the function of preventing backflow. Since the floor drain is connected to the drainage pipe, if the drainage pipe is blocked, when draining water into the drainage pipe again, the water in the drainage pipe will flow back into the floor drain and overflow indoors, causing indoor pollution.

[0005] Furthermore, existing floor drains do not have the function of preventing insects (cockroaches, mice). Cockroaches and mice in the drainage pipe can climb into the floor drain through the drainage pipe, causing blockages and even entering the room from the floor drain.

[0006] Therefore, the existing technology still needs to be improved. Summary of the Invention

[0007] In view of the deficiencies of the above-mentioned existing technology, the purpose of the present invention is to provide a multi-functional floor drain, aiming to enable the floor drain to have the capabilities of preventing odor, preventing backflow, preventing insects, and alarming, increasing the diversity of product functions.

[0008] To achieve the above object, the present invention adopts the following technical solutions:

[0009] A multi-functional floor drain includes a base installed in a cushion layer or a reserved hole, a floor drain body sleeved in the base and exposed from the top of the base, a grate covering the top of the floor drain body, a curved strip-shaped water inlet hole is provided on the grate, an installation opening is provided at the top of the base, a first drain opening is provided at the bottom of the base, and the floor drain body is inserted into the base from the installation opening of the base;

[0010] Among them, the floor drain body is a double-layer wall structure, including an outer wall and an inner wall. An opening is provided at the top of the outer wall. The lower part of the inner wall is connected to the outer wall to form a U-shaped water seal cavity, and a water collecting port is provided at the top end of the inner wall;

[0011] The floor drain further includes a Π-shaped water seal member buckled on the upper end of the inner wall. The edge of the upper end of the water seal member overlaps on the inner side of the outer wall and is provided with an annular water inlet hole. The annular water inlet hole communicates with the opening at the top of the outer wall and the U-shaped water seal cavity, and the lower end of the water seal member is inserted into the U-shaped water seal cavity;

[0012] The inner side of the inner wall of the floor drain body encloses a floor drain central cavity communicating with the water collecting port. A hanging anti-backflow ball is provided below the water collecting port in the floor drain central cavity. The hanging anti-backflow ball can move upward unidirectionally to block the water collecting port when the drainage pipe is blocked and wastewater flows back into the floor drain;

[0013] A second drain opening is provided at the bottom of the inner wall in the floor drain central cavity, and a seesaw seal device that can only open the second drain opening downward is provided at the position of the second drain opening. The first drain opening of the base is below the seesaw seal device.

[0014] Among them, a nano-silver ion layer is provided on the surface of the floor drain body and the surface of the water seal member in contact with water.

[0015] Among them, the water seal member includes a cover plate and an annular water seal plate provided on the lower end surface of the cover plate. The edge of the cover plate overlaps on the inner side of the outer wall and the annular water inlet hole is provided;

[0016] The annular water seal plate is inserted into the U-shaped water seal cavity formed between the outer wall and the inner wall of the floor drain body. The distance from the annular water seal plate to the outer wall of the floor drain body in the U-shaped water seal cavity is less than its distance to the inner wall of the floor drain body, so that the cross-sectional area of the water flowing downward in the U-shaped water seal cavity is equal to the cross-sectional area of the water flowing upward.

[0017] Wherein, a first buckle is arranged at the edge of the water seal component, and a second buckle is arranged on the inner side of the outer wall of the floor drain body. The first buckle and the second buckle are clamped, and the annular water inlet hole is arranged inside the first buckle at the edge of the water seal component.

[0018] Wherein, an alarm device is further included. The seesaw sealing device includes a seesaw, a rotating shaft arranged on the seesaw, and a counterweight arranged at one end of the seesaw. A non-contact angle sensor is arranged on the rotating shaft and is electrically connected to the alarm device. When liquid enters the floor drain and causes the seesaw to open downward, resulting in the rotation of the rotating shaft, the angle sensor transmits the change signals of current and voltage to the alarm device to cause an alarm.

[0019] Wherein, the outer wall of the floor drain body and the inner side of the base are provided with a threaded connection for adjusting the installation height of the floor drain body and the base. The threaded heights of the outer wall of the floor drain body and the inner side of the base are both greater than 40 mm, and the adjusted installation height is greater than 30 mm.

[0020] Wherein, a first bending wall is arranged at the lower part of the inner wall of the floor drain body and is connected to the outer wall of the floor drain body. The U-shaped water seal cavity is formed between the outer wall, the first bending wall, and the inner wall. A second bending wall that bends towards the center is arranged at the top of the inner wall, and an opening is formed in the middle of the second bending wall to form the water collecting port.

[0021] Three clamping claws are arranged in the floor drain central cavity below the second bending wall at intervals of 120 degrees around the water collecting port. The lower ends of the three clamping claws are in a tightened flared shape to clamp the hanging anti-backflow ball.

[0022] The floor drain central cavity includes an upper cavity and a lower cavity, and the upper cavity and the lower cavity are separated by the hanging anti-backflow ball. The upper cavity is communicated with the lower cavity through the hollow position between adjacent two clamping claws.

[0023] Wherein, the contact position between the second bending wall and the hanging anti-backflow ball at the water collecting port is an arc surface.

[0024] Wherein, the inner surface of the U-shaped water seal cavity is a streamline surface.

[0025] The upper surface of the second bending wall is also a streamline surface.

[0026] Wherein, a waterproof wing ring is further arranged at the edge of the upper end of the base.

[0027] The multifunctional floor drain of the present invention has an outer wall and an inner wall of a double-layer structure for the floor drain body. The annular water seal plate at the lower end of the water seal member is inserted between the inner wall and the outer wall to form a U-shaped water seal cavity, and the water seal structure is used to prevent odors. A hanging anti-backflow ball is also arranged inside the floor drain body. When the drainage pipe is blocked and water flows reversely, the hanging anti-backflow ball will float up to block the water collecting port, thus blocking the water in the drainage pipe from flowing back and overflowing the floor drain into the room. A seesaw sealing device is also arranged at the second drainage port inside the floor drain body. The seesaw sealing device can only be opened downward, so pests in the drainage pipe cannot enter the floor drain through the seesaw sealing device, which has the function of preventing insects from entering the room from the floor drain. At the same time, the seesaw sealing device also has the function of blocking odors and combines with the water seal structure to have a dual odor prevention function. That is, the floor drain of the present invention has the functions of preventing odors, preventing backflow and overflow, preventing insects, and alarming at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0029] Figure 1 It is a schematic structural diagram of the first embodiment of the multifunctional floor drain of the present invention;

[0030] Figure 2 is Figure 1 a partial structural diagram of the structure;

[0031] Figure 3 It is a schematic diagram of the cross-sectional areas of the A and B areas divided by the U-shaped water seal cavity;

[0032] Figure 4 is Figure 1 a schematic diagram of the hanging anti-backflow ball floating up to block the water collecting port of the structure;

[0033] Figure 5 is Figure 4 an enlarged schematic diagram at C in;

[0034] Figure 6 is Figure 1 a schematic diagram of the open state of the seesaw sealing device of the structure;

[0035] Figure 7 is Figure 1 a schematic diagram of the connection structure between the clamping jaws and the inner cylinder in the structure;

[0036] Figure 8 It is a schematic structural diagram of the multifunctional floor drain of the present invention provided with a nano-silver ion layer;

[0037] Figure 9 is Figure 8 a partial structural schematic diagram of the structure;

[0038] Figure 10 is a module schematic diagram of the multifunctional floor drain of the present invention provided with an alarm device.

[0039] Explanation of reference numerals:

[0040] 100 - floor drain, 1 - base, 11 - installation opening, 12 - first drain opening, 13 - waterproof wing ring, 2 - floor drain body, 21 - outer wall, 211 - opening, 212 - sunken platform, 213 - second buckle, 22 - inner wall, 221 - first bending wall, 222 - second bending wall, 2221 - arc surface, 223 - second drain opening, 23 - U-shaped water seal cavity, 24 - water collecting port, 25 - floor drain central cavity, 251 - upper cavity, 252 - lower cavity, 27 - water sealing surface, 3 - grate, 31 - curved strip-shaped water inlet holes, 4 - water seal member, 41 - cover plate, 411 - annular water inlet holes, 412 first buckle, 42 - annular water seal plate, 5 - hanging anti-return ball, 51 - clamping jaws, 52 - third buckle, 6 - seesaw sealing device, 61 - seesaw, 62 - rotating shaft, 63 - counterweight, 7 - nano silver ion layer, 8 - alarm device, 9 - angle sensor. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0042] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0043] In the present invention, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0044] In addition, in the present invention, descriptions such as "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include at least one such feature.

[0045] Please refer to Figures 1 to 6 , the present invention provides a multifunctional floor drain 100, which is used to drain waste water and liquid waste, or for monitoring in special occasions such as oil depot oil leakage. When monitoring, the local floor drain 100 needs to be connected to a monitoring circuit. The floor drain 100 of the present invention includes a base 1 installed in a cushion layer or a reserved hole, a floor drain body 2 sleeved in the base 1 and exposed from the top end of the base 1, a grate 3 covering the top end of the floor drain body 2. The grate 3 is provided with curved strip-shaped water inlet holes 31. The top of the base 1 is provided with an installation opening 11, the bottom of the base 1 is provided with a first drain port 12, and the floor drain body 2 is inserted into the base 1 from the installation opening 11 of the base 1. The base 1 is fixed in the cushion layer or the reserved hole, the floor drain body 2 is installed in the base 1 and its top is exposed, and the grate 3 is installed at the top end of the floor drain body 2. The top surface of the grate 3 is lower than the indoor ground surface to collect the water on the ground. Preferably, a waterproof wing ring 13 is further provided at the edge of the upper end of the base 1 of the floor drain 100 of the present invention. The waterproof wing ring 13 can prevent water seepage at the contact part between the floor drain 100 and the ground.

[0046] The first drain port 12 of the base 1 is connected to the drain pipe of the drainage system, such as connected to a drainage cross pipe. The curved strip-shaped water inlet holes 31 on the grate 3 are provided with grilles, which can intercept hair and sundries but allow water to pass through, preventing sundries from entering the body 2 of the floor drain and causing blockage of the floor drain 100.

[0047] The water on the ground enters the body 2 from the curved strip-shaped water inlet holes 31 of the grate 3, then accumulates in the body 2, and when the discharge condition is reached, it is discharged from the lower end of the body 2 to the first drain port 12 of the base 1, and then enters the drain pipe.

[0048] Such as Figure 1 As shown, the floor drain body 2 of the floor drain 100 of the present invention is a double-wall structure, including an outer wall 21 and an inner wall 22. The top of the outer wall 21 is provided with an opening 211 communicating with the curved strip-shaped water inlet holes 31. The lower part of the inner wall 22 is connected to the outer wall 21 to form a U-shaped water seal cavity 23. The top end of the inner wall 22 is provided with a water collecting port 24. The outer wall 21 is provided with a sunken platform 212 at the edge of the opening 211 to install the grate 3.

[0049] The floor drain 100 further includes a Π-shaped water seal member 4 buckled on the upper end of the inner layer wall 22. The edge of the upper end of the water seal member 4 overlaps on the inner side of the outer layer wall 21 and is provided with an annular water inlet hole 411. The annular water inlet hole 411 communicates with the opening 211 at the top of the outer layer wall 21 and the U-shaped water seal cavity 23. The lower end of the water seal member 4 is inserted into the U-shaped water seal cavity 23.

[0050] After water enters the floor drain body 2, it stays in the U-shaped water seal cavity 23 formed by the inner side wall of the outer layer wall 21 and the inner layer wall 22 from the outer side wall. At the same time, since the upper part of the water collecting port 24 is covered by the water seal member 4, and the lower end of the water seal member 4 is inserted into the U-shaped water seal cavity 23 to form a water seal, the water seal seals off the communication between the water collecting port 24 and the opening 211 of the outer layer wall 21 of the floor drain body 2, thereby blocking the communication between the curved strip-shaped water inlet holes 31 on the grate 3 and the water collecting port 24. In this way, the odor emitted from the drainage pipe is blocked and will not enter the curved strip-shaped water inlet holes 31 of the grate 3 from the water collecting port 24 and escape into the room to pollute the indoor air, so that the floor drain 100 of the present invention has an odor prevention function.

[0051] The top surface of the inner layer wall 22 of the present invention is flush with the water seal surface 27. The distance between the bottom end of the annular partition plate at the lower part of the water seal member 4 and the top surface of the inner layer wall 22 is the water seal height. Preferably, the distance between the bottom end of the annular partition plate at the lower part of the water seal member 4 of the present invention and the top surface of the inner layer wall 22 is greater than or equal to 50 mm. In this way, the formed water seal height is greater than or equal to 50 mm. In this way, even on a hot day, the water in the water seal will not be completely evaporated, and the odor prevention is effectively achieved.

[0052] Preferably, as Figure 1 and Figure 2 shown, the water seal member 4 includes a cover plate 41 and an annular water seal plate 42 provided on the lower end surface of the cover plate 41. The edge of the cover plate 41 overlaps on the inner side of the outer layer wall 21, and the annular water inlet hole 411 is provided. The annular water seal plate 42 is inserted into the U-shaped water seal cavity 23 formed between the outer layer wall 21 and the inner layer wall 22 of the floor drain body 2.

[0053] The edge of the cover plate 41 overlaps on the inner side of the outer layer wall 21, so that the water seal member 4 is detachably connected to the floor drain body 2, which is convenient for the quick installation and maintenance of the water seal member 4.

[0054] The upper end of the annular water inlet hole 411 communicates with the opening 211 at the top of the outer layer wall 21, and the lower end communicates with the U-shaped water seal cavity 23 outside the annular water seal plate 42.

[0055] Further, as Figure 2 and Figure 3As shown, the distance from the annular water seal plate 42 to the outer wall 21 of the floor drain body 2 in the U-shaped water seal cavity 23 is less than its distance to the inner wall 22 of the floor drain body 2, so that the cross-sectional area of the water flowing downward in the U-shaped water seal cavity 23 is equal to the cross-sectional area of the water flowing upward. As Figure 3 shown, the cross-sectional area A of the water flowing downward in the U-shaped water seal cavity 23 is equal to the cross-sectional area B of the water flowing upward. Thus, the flow velocity of the water in the water seal formed by the water seal member 4 is equal to ensure that the head loss of the water flow through the U-shaped water seal cavity 23 is minimized, thereby achieving the maximum drainage capacity of the floor drain 100.

[0056] Furthermore, as Figure 5 shown, a first buckle 412 is provided at the edge of the water seal member 4, and a second buckle 213 is provided on the inner side of the outer wall 21 of the floor drain body 2. The first buckle 412 is engaged with the second buckle 213, and the annular water inlet hole 411 is provided inside the first buckle 412 at the edge of the water seal member 4. The buckle connection facilitates the installation of the water seal member 4 on the inner side of the outer wall 21 of the floor drain body 2, and it is very convenient to take and disassemble.

[0057] As Figure 2 shown, the inner side of the inner wall 22 of the floor drain body 2 of the present invention encloses a floor drain central cavity 25 communicating with the water collecting port 24. A hanging anti-backflow ball 5 is provided below the water collecting port 24 in the floor drain central cavity 25, and the hanging anti-backflow ball 5 can move upward unidirectionally to block the water collecting port 24.

[0058] The specific gravity of the hanging anti-backflow ball 5 of the present invention is less than that of water (i.e., less than 1), and it can only move upward unidirectionally. As Figure 4 shown, when the drainage pipe is blocked and the wastewater flows backward into the floor drain, under the action of water, the hanging anti-backflow ball 5 floats upward and abuts against the water collecting port 24 and no longer moves upward. After the hanging anti-backflow ball 5 abuts against the water collecting port 24, the water collecting port 24 is sealed. In this way, the water overflowing from the drainage pipe can be prevented from flowing upward into the U-shaped water seal cavity 23 and overflowing to the indoor from the upper end of the grate 3. Therefore, the floor drain 100 of the present invention has the function of preventing backflow due to the setting of the hanging anti-backflow ball 5.

[0059] As Figure 2 shown, a first bending wall 221 is provided at the lower part of the inner wall 22 of the floor drain body 2 of the present invention to connect with the outer wall 21 of the floor drain body 2. The U-shaped water seal cavity 23 is formed between the outer wall 21, the first bending wall 221, and the inner wall 22. A second bending wall 222 bent toward the center is provided at the top of the inner wall 22, and the water collecting port 24 is formed by the opening in the middle of the second bending wall 222.

[0060] Inside the central cavity 25 of the floor drain, three clamping claws 51 are arranged at intervals of 120 degrees around the water collecting port 24 below the second bending wall 222. The lower ends of the three clamping claws 51 are in the shape of a tightened bell mouth to clamp the hanging anti-backflow ball 5. In this way, under the action of the multiple clamping claws 51 with a tightened bell mouth shape at the lower end, the hanging anti-backflow ball 5 is suspended in the central cavity 25 of the floor drain body 2 and can only move upward unidirectionally. There are voids between the multiple clamping claws 51 for normal downward drainage.

[0061] Preferably, as Figure 7 shown, a third buckle 52 is arranged below the second bending wall 222 of the present invention and is buckled and connected with the clamping claw 51.

[0062] Please continue to refer to Figure 4 , a second drain port 223 is opened at the bottom of the inner layer wall 22 of the central cavity 25 of the floor drain of the present invention. A seesaw sealing device 6 that can only open the second drain port 223 downward is arranged at the position of the second drain port 223. Below the seesaw sealing device 6 is the first drain port 12 of the base 1.

[0063] Specifically, the seesaw sealing device 6 includes a seesaw 61, a rotating shaft 62 arranged on the seesaw 61, and a counterweight 63 arranged at one end of the seesaw 61. The length of the seesaw 61 is greater than that of the second drain port 223 and abuts against the second drain port 223 below the second drain port 223. Therefore, the seesaw sealing device 6 can only be opened downward by the gravity of water.

[0064] The range from the water collecting port 24 on the inner side of the inner layer wall 22 of the floor drain body 2 of the present invention to above the seesaw sealing device 6 is the central cavity 25 of the floor drain. When there is no water entering the central cavity 25 of the inner layer wall 22 or the water in the central cavity 25 of the inner layer wall 22 of the floor drain is less usually, due to the gravity of the counterweight 63, the end of the seesaw 61 contacting the second drain port 223 is always subjected to an upward force and abuts against the second drain port 223, playing a role in closing the second drain port 223. In this way, pests such as cockroaches and mice entering the first drain port 12 of the base 1 from the drainage pipe cannot enter the second drain port 223 due to the blocking of the seesaw sealing device 6, thus playing a role in preventing pests. When the water in the central cavity 25 of the inner layer wall 22 of the floor drain gradually increases and the rotational torque of the seesaw 61 is greater than the rotational torque of the counterweight 62, the seesaw 61 of the seesaw sealing device 6 rotates counterclockwise to open the second drain port 223 for drainage, as Figure 6 shown in.

[0065] Specifically, the central cavity 25 of the floor drain of the present invention includes an upper cavity 251 and a lower cavity 252. The upper cavity 251 and the lower cavity 252 are separated by a hanging anti-backflow ball 5. The upper cavity 251 communicates with the lower cavity 252 through the hollow position between two adjacent clamping claws 51. When draining water, the water enters the water collecting port 24 from the U-shaped water seal cavity 23, then enters the upper cavity 251, then passes through the hollow position between two adjacent clamping claws 51 to enter the lower cavity 252, and then converges at the second drain port 223 and is blocked by the seesaw 61 of the seesaw sealing device 6. When the water increases, the seesaw 61 of the seesaw sealing device 6 rotates to open the second drain port 223. The setting of the seesaw sealing device 6 enables the floor drain 100 of the present invention to have the function of preventing pests.

[0066] The structure of the floor drain 100 of the present invention will generate a siphon phenomenon: when the water flow on the ground enters the floor drain 100, it first passes through the U-shaped water seal cavity 23, then reaches the central cavity 25 of the floor drain inside the inner layer wall 22 through the water collecting port 24 and converges above the seesaw sealing device 6, and then opens the seesaw sealing device 6 in the form of gravity flow to discharge the water into the drain horizontal pipe connecting the base 1 of the floor drain 100. As the water flow continuously increases, the water in the lower part of the central cavity 25 of the floor drain will gradually be filled. Since the second drain port 223 at the seesaw sealing device 6 is lower than the height of the floor drain water seal surface 27, a negative pressure will be formed at the position of the water collecting port 24 at the upper end of the central cavity 25 of the floor drain. The water entering the floor drain will accelerate into the floor drain due to the formation of negative pressure inside the floor drain, thus forming a siphon drainage phenomenon, greatly improving the drainage capacity of the floor drain and endowing the floor drain with super self-cleaning ability. As the drainage volume of the floor drain decreases, the water in the lower part of the central cavity 25 of the floor drain will gradually change from being filled to not being filled. At this time, the drainage of the floor drain also changes from siphon flow drainage to gravity flow drainage.

[0067] Therefore, the floor drain 100 of the present invention will form a siphon effect when the water flow reaches the flow standard specified by the national standard, and its drainage volume is more than 1.5 times that of the existing national standard for the drainage volume of large-flow floor drains.

[0068] Furthermore, as Figure 8 and Figure 9 shown, nano-silver ion layers 7 are provided on the inner side wall of the outer layer wall 21 of the floor drain body 2 of the floor drain 100 of the present invention and on the surfaces in contact with water of the water seal member 4. That is, on the inner side wall of the outer layer wall 21 of the floor drain body 2 of the present invention, the inner and outer side walls of the inner layer wall 2122, the upper and lower walls of the cover plate 41 of the water seal member 4, the inner and outer walls of the annular water seal plate 42, the inner and outer walls of the clamping claws 51, the outer surface of the hanging anti-backflow ball 5, and the upper and lower surfaces of the seesaw 61 of the seesaw sealing device 6, nano-silver ion layers 7 are provided at these parts in contact with water.

[0069] The nano silver ion layer 7 has a bactericidal and antibacterial effect, which can effectively prevent the reproduction of microorganisms such as bacteria and viruses in the floor drain body 2, make the inside of the floor drain body 2 smoother, create good conditions for the smooth drainage of the floor drain 100, and at the same time eliminate the odor caused by the growth of bacteria inside the traditional floor drain. Since the water in the U-shaped water seal cavity of the existing floor drain cannot be drained completely, when the water does not drain for a long time, the water in the U-shaped water seal cavity will stink due to the action of bacteria and other factors. In this invention, the nano silver ion layer 7 is provided on the contact surface between the floor drain body 2 and water, so that the inner surface of the U-shaped water seal cavity 23 also has the nano silver ion layer 7 for sterilization and disinfection, thus solving the problem of the water in the U-shaped water seal cavity 23 stinking.

[0070] That is, due to the setting of the nano silver ion layer 7 in the floor drain 100 of this invention, bacteria do not grow inside the floor drain 100, ensuring that the inside of the floor drain 100 is as bright as new. Since bacteria do not grow inside the floor drain 100, the odor-causing phenomenon of the floor drain 100 due to the presence of bacteria will not occur, thus enhancing the self-cleaning and self-purifying ability of the floor drain 100 of this invention.

[0071] Furthermore, on the outer wall 21 of the floor drain body 2 and the inner side of the base 1 of the floor drain 100 of this invention, there is a threaded connection for adjusting the installation height of the floor drain body 2 and the base 1. The thread heights on the outer wall 21 of the floor drain body 2 and the inner side of the base 1 are both threads greater than 40 mm, and the adjustable installation height is greater than 30 mm.

[0072] That is, the inner wall of the base 1 is provided with internal threads, and the outer wall of the outer wall 21 is provided with external threads. In this way, the floor drain body 2 and the base 1 are threadedly connected, so that the installation height of the body 2 and the base 1 can be adjusted to adapt to the ground of different on-site environments and is easy to install. At the same time, since the thread heights on the outer wall 21 of the floor drain body 2 and the inner side of the base 1 are both threads greater than 40 mm, the adjustable range of the installation height is greater than or equal to 30 mm.

[0073] As Figure 10 shown, the floor drain 100 of this invention further includes an alarm device 8. The seesaw sealing device 6 of the floor drain 100 of this invention includes a seesaw 61, a rotating shaft 62 arranged on the seesaw 61, and a counterweight 63 arranged at one end of the seesaw. A non-contact angle sensor 9 is arranged on the rotating shaft 62 and is electrically connected to the alarm device 8. When liquid enters the floor drain 100 and opens the seesaw 61 downward, causing the rotating shaft 62 to rotate, the angle sensor 9 transmits the change signals of current and voltage to the alarm device 8 to cause an alarm.

[0074] An alarm device 8 is provided with an alarm control circuit, an audible and visual alarm, etc. After the angle sensor 9 detects the rotation of the rotating shaft 62 of the seesaw sealing device 6, it sends a signal to the alarm device 8 for alarm. In this way, the floor drain 100 of the present invention can be applied to special occasions, such as oil depots and other places where liquid leakage is strictly prohibited, to monitor whether there is leakage on the ground of the oil depot. Once a little leakage occurs, an alarm can be immediately issued for subsequent processing.

[0075] Preferably, as Figure 2 shown, the inner surface of the U-shaped water seal cavity 23 of the present invention is a streamline surface, and the upper surface of the second bending wall 222 is also a streamline surface. The setting of the streamline surface makes the inner surface of the floor drain 100 body 2 smooth, especially reducing the water flow resistance of the inner wall of the U-shaped water seal cavity 23, making the drainage faster, and effectively solving the disadvantage of large water flow resistance of traditional floor drains.

[0076] The contact position between the second bending wall 222 of the present invention and the hanging anti-return ball 5 at the water collecting port 24 is an arc surface 2221. In this way, when the hanging anti-return ball 5 floats up and blocks the water collecting port 24, the water collecting port 24 can be effectively sealed.

[0077] The floor drain 100 of the present invention has a simple structure, is easy to disassemble and install (the adjustable height reaches 30 mm), and has multiple functions of preventing odor, preventing backflow, and preventing insects. It also applies the nano-silver ion technology for sterilization and disinfection, and combines an alarm device so that the floor drain 100 can become an alarm-type floor drain and can be applicable to special occasions such as oil depots. That is, the floor drain 100 of the present invention has a simple structure and diverse functions at the same time, and is suitable for wide promotion and application.

[0078] The above are only examples clearly illustrating the present invention, and do not limit the patent scope of the present invention. It is impossible to list all the implementation manners here. Any equivalent structural transformation made by using the content of the technical solution of the present invention under the concept of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A multifunctional floor drain, comprising a base mounted in a cushion layer or a reserved hole, a floor drain body sleeved in the base and exposed from the top of the base, a grate covering the top of the floor drain body, the grate being provided with a curved strip-shaped water inlet hole, a mounting opening being provided at the top of the base, a first drain outlet being provided at the bottom of the base, and the floor drain body being installed into the base through the mounting opening of the base; characterized in that The floor drain body has a double-layer wall structure, including an outer wall and an inner wall. The top of the outer wall is provided with an opening. The lower part of the inner wall is connected to the outer wall to form a U-shaped water seal cavity. The top end of the inner wall is provided with a water collection port. The floor drain further includes a Π-shaped water seal member buckled on the upper end of the inner wall. The edge of the upper end of the water seal member overlaps on the inner side of the outer wall and is provided with an annular water inlet hole. The annular water inlet hole communicates with the opening at the top of the outer wall and the U-shaped water seal cavity. The lower end of the water seal member is inserted into the U-shaped water seal cavity. The inner side of the inner wall of the floor drain body encloses a floor drain central cavity communicating with the water collection port. A hanging anti-backflow ball is arranged below the water collection port in the floor drain central cavity. The hanging anti-backflow ball can move upward unidirectionally to block the water collection port when the drain pipe is blocked and wastewater flows backward into the floor drain. The inner wall is provided with a second drain port at the bottom of the floor drain central cavity. A seesaw sealing device that can only open the second drain port downward is arranged at the position of the second drain port. The first drain port of the base is below the seesaw sealing device. The water seal member includes a cover plate and an annular water seal plate arranged on the lower end face of the cover plate. The edge of the cover plate overlaps on the inner side of the outer wall and is provided with the annular water inlet hole. The annular water seal plate is inserted into the U-shaped water seal cavity formed between the outer wall and the inner wall of the floor drain body. The distance from the annular water seal plate to the outer wall of the floor drain body in the U-shaped water seal cavity is less than its distance to the inner wall of the floor drain body, so that the cross-sectional area of the water flowing downward in the U-shaped water seal cavity is equal to the cross-sectional area of the water flowing upward. The edge of the water seal member is provided with a first buckle, and the inner side of the outer wall of the floor drain body is provided with a second buckle. The first buckle and the second buckle are clamped. The annular water inlet hole is arranged inside the first buckle on the edge of the water seal member. It further includes an alarm device. The seesaw sealing device includes a seesaw, a rotating shaft arranged on the seesaw, and a counterweight block arranged at one end of the seesaw. A non-contact angle sensor is arranged on the rotating shaft and is electrically connected to the alarm device. When liquid enters the floor drain and causes the seesaw to open downward and the rotating shaft to rotate, the angle sensor transmits the change signals of current and voltage to the alarm device to cause an alarm. The outer wall of the floor drain body and the inner side of the base are provided with a threaded connection for adjusting the installation height of the floor drain body and the base. The threaded heights of the outer wall of the floor drain body and the inner side of the base are both greater than 40 mm, and the adjustable installation height is greater than 30 mm. The lower part of the inner wall of the floor drain body is provided with a first bending wall connected to the outer wall of the floor drain body. The U-shaped water seal cavity is formed between the outer wall, the first bending wall, and the inner wall. The top of the inner wall is provided with a second bending wall bent toward the center. The second bending wall has an opening in the middle to form the water collection port. Three clamping claws are arranged at intervals of 120 degrees around the water collection port below the second bending wall in the floor drain central cavity. The lower ends of the three clamping claws are in a tightened bell mouth to clamp the hanging anti-backflow ball. The floor drain central cavity includes an upper cavity and a lower cavity. The upper cavity and the lower cavity are separated by the hanging anti-backflow ball. The upper cavity communicates with the lower cavity through the hollow positions between adjacent clamping claws.

2. The multifunctional floor drain according to claim 1, wherein A nano-silver ion layer is provided on the surface of the floor drain body and the water seal member that comes into contact with water.

3. The multifunctional floor drain according to claim 1, characterized in that: The contact position between the second bent wall and the hanging anti-backflow ball at the water collecting port is an arc surface.

4. The multifunctional floor drain according to claim 1, characterized in that: The inner surface of the U-shaped water seal cavity is a streamline surface; the upper surface of the second bent wall is also a streamline surface.

5. The multifunctional floor drain according to claim 1, characterized in that: A waterproof wing ring is further provided at the edge of the upper end of the base.

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