Water seal deodorization floor drain

Abstract

The utility model provides a water seal deodorization floor drain, which belongs to the technical field of building water supply and drainage and comprises a floor drain main body, a grate and a water filter plate, the floor drain body is in a hollow funnel shape, and a fixing clamping groove is annularly formed in the inner side wall of the upper portion of the floor drain body. A clamping structure is arranged on the periphery of the grate, and the grate is detachably arranged in the fixing clamping groove through the clamping structure. Sundries filtering holes are formed in the grate; the water filtering plate is fixed to the lower portion of the inner side of the floor drain body, a super-hydrophobic layer is arranged on the upper surface of the water filtering plate, and water filtering holes are formed in the water filtering plate. The water seal floor drain can solve the problems that in the prior art, a traditional water seal floor drain adopts a'water seal 'in a trap to achieve the sealing effect, the height of the water seal is difficult to maintain, the water seal is easy to dry up and return odor when the water seal is too shallow, dirt is easy to severely deposit when the water seal is too deep, and the trap is easy to block and difficult to clean.

Description

Technical Field

[0001] The utility model relates to the technical field of lime calcination, and more specifically to a water-sealed and odor-proof floor drain. Background Art

[0002] The floor drain is a crucial interface between a home's drainage system and the indoor floor, and its quality directly impacts indoor air quality. Traditional water-seal floor drains rely on retaining water to create a seal, isolating the living space from the plumbing system. They are constructed in a bell-shaped configuration, like a bowl, that buckles over the drain opening, forming a U-shaped trap. This "water seal" within the trap creates a seal.

[0003] Currently, most water-sealed floor drains have shallow seals and too little water, which can dry out over time and in dry weather, leading to odors. However, if the water seal is too deep, drainage will be affected, leading to more serious dirt buildup and difficulty in cleaning. Because the drain's sewer pipes and septic tanks are connected to the living space, if the drain's seal fails or the seal is not tight, the sewer will be completely disconnected from the interior, allowing odors and toxic and harmful gases to escape through the pipes and escape into the living room.

[0004] In summary, the current traditional water-sealed floor drain uses the "water seal" in the trap to achieve the sealing effect. The height of the water seal is difficult to maintain. If it is too shallow, it is easy to dry up and return to smell; if it is too deep, it is easy to cause serious dirt deposition; the trap is easy to clog and difficult to clean. Utility Model Content

[0005] In view of the above problems, the purpose of the present invention is to provide a water-sealed and odor-proof floor drain to solve the problems in the prior art, in which the traditional water-sealed floor drain uses a "water seal" in the water trap to achieve a sealing effect, the water seal height is difficult to maintain, and there are problems such as it is easy to dry up and return to odor when it is too shallow, and it is easy to cause serious dirt deposition when it is too deep, and the water trap is easy to be clogged and difficult to clean.

[0006] The utility model provides a water-sealed and odor-proof floor drain, comprising a floor drain body, a grate and a water filter plate; wherein,

[0007] The floor drain body is in the shape of a hollow funnel, and a fixing groove is provided on the inner side wall of the upper portion of the floor drain body;

[0008] A clamping structure is provided on the periphery of the grate, and the grate is detachably arranged in the fixed slot through the clamping structure; a debris filtering hole is provided on the grate;

[0009] The water filter plate is fixed to the inner lower part of the floor drain body, a super hydrophobic layer is provided on the upper surface of the water filter plate, and water filter holes are provided on the water filter plate.

[0010] In addition, a preferred solution is that the water filter plate and the floor drain body are an integrally formed structure.

[0011] In addition, a preferred solution is that the water filter plate is a wear-resistant metal plate; and the floor drain body is a wear-resistant metal floor drain body.

[0012] In addition, a preferred solution is that the super-hydrophobic layer includes a micro-nano graded rough structure layer formed by femtosecond laser treatment on the surface of the wear-resistant metal plate and a low surface energy layer formed by adsorbing carbon-containing compounds on the upper surface of the micro-nano graded rough structure layer.

[0013] In addition, a preferred solution is that the super-hydrophobic layer includes a micro-nano graded rough structure layer formed by femtosecond laser treatment on the surface of the wear-resistant metal plate and a hydrophobic chemical modification layer provided on the micro-nano graded rough structure layer.

[0014] In addition, a preferred solution is that the wear-resistant metal plate is a stainless steel plate or an aluminum alloy plate.

[0015] In addition, a preferred solution is that the water filter plate is a ceramic plate; the floor drain body is a ceramic floor drain body; and the super-hydrophobic layer includes a nano-particle adhesive layer with super-hydrophobic properties arranged on the ceramic plate.

[0016] In addition, a preferred solution is that the pore diameter of the water filter hole is 2 to 4 mm; the contact angle of the super-hydrophobic layer is 120° to 170°; and the liquid seal height inside the floor drain body is 2 to 10 cm.

[0017] In addition, a preferred solution is that the floor drain body is in the shape of a hollow funnel with an upper cylindrical body and a lower inverted cone.

[0018] In addition, a preferred solution is that a drainage pipe connecting portion is provided at the bottom of the floor drain body.

[0019] As can be seen from the above technical solution, the water-sealed and odor-proof floor drain provided by the utility model has super-hydrophobic ability by arranging a super-hydrophobic layer on the upper surface of the water filter plate, and utilizes its extremely high surface tension to achieve a liquid seal of a certain height inside the floor drain body. When the water level in the floor drain body is lower than the liquid seal height, the water maintains a certain height in the floor drain body to achieve water-sealed and odor-proof; when the water level is higher than the liquid seal height, the water is quickly discharged from the water filter holes of the water filter plate, avoiding the problem of dirt deposition caused by the high water level. The utility model greatly simplifies the structure of the traditional water-sealed and odor-proof floor drain; the liquid seal is achieved by utilizing the super-hydrophobic layer on the upper surface of the water filter plate, which is easier to clean and not easy to clog compared with the traditional water trap; different liquid seal heights can be selected according to the actual usage scenario, and it will not dry out and return to odor due to factors such as time and dry weather, nor will it affect the drainage speed due to the large water seal height. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] By referring to the following description in conjunction with the accompanying drawings, and with a more comprehensive understanding of the present invention, other objects and results of the present invention will become more clear and easy to understand.

[0021] Figure 1 This is a structural diagram of a water-sealed odor-proof floor drain according to an embodiment of the present utility model;

[0022] Figure 2 This is a structural diagram of a floor drain body according to an embodiment of the present utility model;

[0023] Figure 3 Schematic diagram of the structure of a grate according to an embodiment of the present utility model;

[0024] Figure 4 The present invention is a flow chart for manufacturing a water-sealed and odor-proof floor drain according to an embodiment of the present invention.

[0025] In the accompanying drawings, 1-floor drain body, 11-fixed slot, 2-grate, 3-water filter plate, 31-water filter hole, 4-drain pipe connection part.

[0026] The same reference numerals throughout the drawings indicate similar or corresponding features or functions. DETAILED DESCRIPTION

[0027] In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. However, it will be apparent that these embodiments may be practiced without these specific details.

[0028] In response to the above-mentioned existing technologies, traditional water-sealed floor drains use a "water seal" in the water trap to achieve a sealing effect. The water seal height is difficult to maintain. If it is too shallow, it is easy to dry up and return to odor; if it is too deep, it is easy to cause serious dirt deposition; the water trap is easy to clog and difficult to clean. The utility model proposes a water-sealed and odor-proof floor drain.

[0029] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] In order to illustrate the water seal and odor-proof floor drain provided by the utility model, Figure 1 The structure of the water-sealed and odor-proof floor drain according to an embodiment of the utility model is shown; Figure 2 The structure of the floor drain body according to an embodiment of the present utility model is shown; Figure 3 The structure of the grate according to the embodiment of the present utility model is shown; Figure 4 The invention shows the process of manufacturing the water-sealed and odor-proof floor drain according to the embodiment of the invention.

[0031] like Figures 1 to 3As shown in the figure, the water-sealed and odor-proof floor drain provided by the utility model includes a floor drain body 1, a grate 2 and a water filter plate 3; wherein, the floor drain body 1 is in the shape of a hollow funnel, and a fixed card groove 11 is provided on the upper inner wall of the floor drain body 1; a clamping structure (not shown in the figure) is provided around the grate 2, and the grate 2 is detachably arranged in the fixed card groove 11 through the clamping structure; a debris filter hole is provided on the grate 2; the water filter plate 3 is fixed to the inner lower part of the floor drain body 1, a super-hydrophobic layer is provided on the upper surface of the water filter plate 3, and a water filter hole 31 is provided on the water filter plate.

[0032] The clamping structure may be a clamping block that matches the fixed clamping slot 11 , so that the grate 2 can be detachably arranged in the fixed clamping slot 11 through the clamping structure.

[0033] By arranging the super-hydrophobic layer on the upper surface of the water filter plate 3, the upper surface of the water filter plate 3 has super-hydrophobic ability, and utilizing its extremely high surface tension, a certain height of liquid seal is achieved inside the floor drain main body 1. When the water level in the floor drain main body 1 is lower than the liquid seal height, the water maintains a certain height in the floor drain main body 1, thereby achieving water seal and odor prevention; when the water level is higher than the liquid seal height, the water is quickly discharged from the water filter hole 31 of the water filter plate, thereby avoiding the problem of dirt deposition caused by the high water level. The utility model greatly simplifies the structure of the traditional water seal and odor prevention floor drain; the liquid seal is achieved by utilizing the super-hydrophobic layer on the upper surface of the water filter plate, which is easier to clean and less prone to clogging than the traditional water trap; different liquid seal heights can be selected according to the actual usage scenario, and it will not dry out and return to odor due to factors such as time and dry weather, nor will it affect the drainage speed due to the high water seal height.

[0034] As a preferred solution of the present invention, the water filter plate 3 and the floor drain body 1 are an integrally formed structure.

[0035] By setting the water filter plate 3 and the floor drain body 1 as an integrated structure, the fixation between the two is made more firm, which can be achieved by mold processing.

[0036] As a preferred solution of the present invention, the water filter plate 3 is a wear-resistant metal plate; the floor drain body 1 is a wear-resistant metal floor drain body.

[0037] It should be noted that the water filter plate 3 in the present invention is preferably but not limited to a wear-resistant metal plate; the floor drain body 1 is preferably but not limited to a wear-resistant metal floor drain body, and the present invention does not make any special limitation on this.

[0038] As a preferred embodiment of the present invention, the super-hydrophobic layer includes a micro-nano graded rough structure layer formed by femtosecond laser treatment on the surface of the wear-resistant metal plate and a low surface energy layer formed by adsorbing carbon-containing compounds on the upper surface of the micro-nano graded rough structure layer.

[0039] Among them, when the material of the water filter plate 3 is a wear-resistant metal plate, the upper surface of the wear-resistant metal plate can be processed by femtosecond laser to form a micro-nano graded rough structure layer on the upper surface of the wear-resistant metal plate; then the micro-nano graded rough structure layer absorbs carbon-containing compounds in the atmosphere to form a low surface energy layer on the micro-nano graded rough structure layer, so that a super-hydrophobic layer is formed on the upper surface of the water filter plate 3.

[0040] Specifically, when the water filter plate 3 is a wear-resistant metal plate, after femtosecond laser treatment, that is, using a pulsed laser to construct a micro-nano graded rough structure similar to the surface of a "lotus leaf" on the surface of the water filter plate 3, and then after more than 15 days of natural modification by air, the laser-induced microstructure greatly increases the specific surface area, allowing the upper surface of the water filter plate 3 to absorb low-surface energy substances such as carbon-containing compounds in the atmosphere, thereby reducing the surface energy and forming a super-hydrophobic layer on the upper surface of the water filter plate 3. Laser treatment combined with natural modification is a simple method for processing super-hydrophobic layers, but this method is relatively inefficient. This method is achieved by changing the laser processing parameters and allowing the micro-nano structure to fully absorb low-surface energy substances in the air. For example, on the surface of copper, the laser wavelength is set at 320nm, the frequency is 30kHz, and the pulse time is 2*10 -8 s, scanning speed 160-220mm / s, can prepare super hydrophobic layer with contact angle ≥150°

[0041] As a preferred solution of the present invention, the super-hydrophobic layer includes a micro-nano graded rough structure layer formed by femtosecond laser treatment on the surface of the wear-resistant metal plate and a hydrophobic chemical modification layer provided on the micro-nano graded rough structure layer.

[0042] Among them, when the material of the water filter plate 3 is a wear-resistant metal plate, the upper surface of the wear-resistant metal plate is treated with a femtosecond laser to form a micro-nano graded rough structure layer on the upper surface of the wear-resistant metal plate; then the micro-nano graded rough structure layer is treated with a hydrophobic chemical modification material to form a super-hydrophobic layer on the upper surface of the water filter plate 3.

[0043] Specifically, when the water filter plate 3 is a wear-resistant metal plate, for some inherently hydrophilic materials (contact angle <90°), a super-hydrophobic layer can be formed on the surface of the water filter plate 3 through femtosecond laser treatment combined with chemical modification. This method is relatively efficient. For example, stainless steel or aluminum alloy are inherently hydrophilic materials. After laser treatment, the surface of the water filter plate 4 contains a large number of polar sites. The greater polarity promotes the dissociation and adsorption of water from the environment on the substrate surface, thus making it hydrophilic. In this case, chemical modification is performed using various low-surface-energy chemical reagents such as fluorosilanes, lauric acid, or stearic acid solutions. After chemical modification, the surface exhibits excellent hydrophobicity. For example, after femtosecond laser treatment to obtain a micro-nano graded rough structure layer, the water filter plate 3 is immediately placed in a stearic acid / fluorosilane / n-hexane solution for a period of time to reduce the surface free energy, thereby forming a super-hydrophobic layer on the surface of the water filter plate 3.

[0044] It should be noted that in the technical solution of the present invention, when the water filter plate 3 is a wear-resistant metal plate, the method for forming the super-hydrophobic layer on the upper surface of the water filter plate 3 is not limited to the aforementioned laser treatment combined with natural modification or laser treatment combined with chemical modification. Laser treatment combined with heat treatment, electrodeposition, and other processes can also be used. Any method that can achieve a super-hydrophobic effect (contact angle ≥ 150°, rolling angle < 10°) is within the scope of protection of the present invention. Once the upper surface of the water filter plate 3 has super-hydrophobicity, it can provide a high surface tension, which can achieve a certain degree of liquid sealing.

[0045] As a preferred embodiment of the present invention, the hydrophobic chemical modification material is any one of fluorosilane, thiol and stearic acid solution.

[0046] It should be noted that the hydrophobic chemical modification material in the technical solution of the present invention is preferably but not limited to any one of fluorosilane, thiol and stearic acid solution.

[0047] As a preferred solution of the present invention, the wear-resistant metal plate is a stainless steel plate or an aluminum alloy plate.

[0048] It should be noted that the wear-resistant metal plate in the present invention is preferably, but not limited to, a stainless steel plate or an aluminum alloy plate.

[0049] As a preferred solution of the present invention, the water filter plate 3 is a ceramic plate; the floor drain body 1 is a ceramic floor drain body; and the super-hydrophobic layer includes a nano-particle adhesive layer with super-hydrophobic properties arranged on the ceramic plate.

[0050] When the water filter plate 3 is made of a ceramic plate, an adhesive prepared from hydrophobic nanoparticles is bonded to the upper surface of the ceramic plate by spraying, dipping, or extrusion to form a super-hydrophobic layer on the upper surface of the water filter plate 3 .

[0051] Specifically, when the material of the water filter plate 3 is a ceramic plate, the hydrophobic nanoparticles are prepared into an adhesive, and the adhesive is combined with the ceramic plate by spraying, dipping or extrusion, so that a multi-level micro-nano composite structure similar to the surface of a "lotus leaf" is formed on the upper surface of the water filter plate 3 to achieve good hydrophobicity, which not only increases the bonding strength between the microstructure and the substrate, but also plays a buffering role when the surface is subjected to external force, thereby increasing the durability of the odor-proof floor drain. Among them, the adhesive prepared from the hydrophobic nanoparticles can be a finished product in the prior art, for example, the hydrophobic agent in the highly durable cement-based surface super hydrophobic agent and its preparation and application disclosed in the patent application number 202311740946.7 previously filed by the present applicant (i.e., the adhesive prepared from the hydrophobic nanoparticles in the present invention) or the hydrophobic agent in the method for preparing a highly durable cement-based surface hydrophobic agent disclosed in the patent application number 202310793956.0 previously filed by the present applicant (i.e., the adhesive prepared from the hydrophobic nanoparticles in the present invention). This utility model is not particularly limited to this.

[0052] As a preferred embodiment of the present invention, the pore diameter of the water filter hole 31 is 2 to 4 mm; the contact angle of the super-hydrophobic layer is 120° to 170°; and the liquid seal height inside the floor drain body 1 is 2 to 10 cm.

[0053] Specifically, the pore diameter of the water filter hole 31 and the contact angle of the super-hydrophobic layer of the water filter plate 3 can be designed according to the actual required liquid seal height.

[0054] As a preferred solution of the present invention, the floor drain body 1 is in the shape of a hollow funnel with an upper cylindrical body and a lower inverted cone.

[0055] It should be noted that the floor drain body 1 in the present invention is preferably, but not limited to, a hollow funnel shape with an upper cylindrical body and a lower inverted cone, and the present invention does not impose any special limitation on this.

[0056] As a preferred solution of the present invention, a drainage pipe connecting portion 4 is provided at the bottom of the floor drain body 1 .

[0057] Specifically, the drain pipe connecting portion 4 is a cylindrical tubular structure, which is convenient for connection with the drain pipe.

[0058] like Figures 1 to 4 As shown in the figure, the process of manufacturing the water-sealed and odor-proof floor drain provided by the present invention comprises the following steps:

[0059] S1. Make a base structure for a water-sealed and odor-proof floor drain; wherein the base structure includes a hollow funnel-shaped floor drain body 1, a grate 2 detachably mounted on the upper inner portion of the floor drain body 1, and a water filter plate 3 fixed to the lower inner portion of the floor drain body 1; a debris filter hole is provided on the grate 2; and a water filter hole 31 is provided on the water filter plate 3.

[0060] S2. Performing a super-hydrophobic treatment on the upper surface of the water filter plate 3 according to the material of the water filter plate 3 to form a super-hydrophobic layer on the upper surface of the water filter plate 3.

[0061] S3. According to the contact angle of the super-hydrophobic layer and the size of the water filtering hole 31, the liquid seal height in the floor drain body 1 is set to complete the processing of the water-sealed and odor-proof floor drain.

[0062] In order to better explain the process of manufacturing the water-sealed and odor-proof floor drain provided by the present invention in detail, an example is given below:

[0063] Example 1

[0064] A base structure for making a water-sealed and odor-proof floor drain; wherein the base structure includes a hollow funnel-shaped floor drain body 1, a grate 2 detachably mounted on the upper inner portion of the floor drain body 1, and a water filter plate 3 fixed to the lower inner portion of the floor drain body 1; debris filter holes are provided on the grate 2; water filter holes 31 are provided on the water filter plate 3; the water filter plate 3 and the floor drain body 1 are both made of stainless steel, and the water filter plate 3 and the floor drain body 1 are processed into an integrated structure.

[0065] A pulsed laser was used to create a micro-nano graded rough structure layer on the upper surface of the water filter plate 3. This layer was then exposed to air for over 15 days to naturally modify. The laser-induced microstructure significantly increased the specific surface area, allowing the upper surface of the water filter plate 3 to absorb low-surface-energy substances such as carbon compounds in the atmosphere. This reduced the surface energy of the micro-nano graded rough structure layer, forming a low-surface-energy layer and ultimately creating a super-hydrophobic layer on the upper surface of the water filter plate 3. Testing showed that the contact angle of the super-hydrophobic layer on the upper surface of the water filter plate 3 was ≥150°, and the rolling angle was <10°.

[0066] By adjusting the pore diameter of the water filter hole 31 to 2-4 mm, the liquid seal height in the floor drain body 1 can be set to 2-10 cm, thereby completing the processing of the water-sealed and odor-proof floor drain.

[0067] Example 2

[0068] A base structure for making a water-sealed and odor-proof floor drain; wherein the base structure includes a hollow funnel-shaped floor drain body 1, a grate 2 detachably mounted on the upper inner portion of the floor drain body 1, and a water filter plate 3 fixed to the lower inner portion of the floor drain body 1; debris filter holes are provided on the grate 2; water filter holes 31 are provided on the water filter plate 3; the water filter plate 3 and the floor drain body 1 are both made of aluminum alloy, and the water filter plate 3 and the floor drain body 1 are processed into an integrated structure.

[0069] A pulsed laser was used to create a micro-nano hierarchical rough structure on the upper surface of the water filter plate 3. After laser induction, the surface of the water filter plate contained a large number of polar sites. The greater polarity promotes the dissociation and adsorption of water from the environment on the substrate surface, making it hydrophilic. The laser-treated micro-nano hierarchical rough structure was immediately placed in 0.095 g / mL stearic acid for 2 hours to reduce the surface free energy of the micro-nano hierarchical rough structure, thereby forming a superhydrophobic layer on the upper surface of the water filter plate 3. Testing showed that the contact angle of the superhydrophobic layer on the upper surface of the water filter plate 3 was ≥150°, and the rolling angle was <10°.

[0070] By adjusting the pore diameter of the water filter hole 31 to 2-4 mm, the liquid seal height in the floor drain body 1 can be set to 2-10 cm, thereby completing the processing of the water-sealed and odor-proof floor drain.

[0071] Example 3

[0072] The difference from Example 2 is that the micro-nano hierarchical rough structure layer formed after laser treatment is immediately placed in 0.095 g / mL fluorosilane for 2 hours to reduce the surface free energy of the micro-nano hierarchical rough structure layer, thereby forming a superhydrophobic layer on the upper surface of the water filter plate 3. Testing shows that the contact angle of the superhydrophobic layer on the upper surface of the water filter plate 3 is ≥150°, and the rolling angle is <10°.

[0073] The rest are the same as in Example 2.

[0074] Example 4

[0075] The difference from Example 2 is that the micro-nano hierarchical rough structure layer formed after laser treatment was immediately placed in a 0.095 g / mL n-hexane solution for 2 hours to reduce the surface free energy of the micro-nano hierarchical rough structure layer, thereby forming a superhydrophobic layer on the upper surface of the water filter plate 3. Testing showed that the contact angle of the superhydrophobic layer on the upper surface of the water filter plate 3 was ≥150°, and the rolling angle was <10°.

[0076] The rest are the same as in Example 2.

[0077] Example 5

[0078] A base structure for making a water-sealed and odor-proof floor drain; wherein the base structure includes a hollow funnel-shaped floor drain body 1, a grate 2 detachably mounted on the upper inner portion of the floor drain body 1, and a water filter plate 3 fixed to the lower inner portion of the floor drain body 1; debris filter holes are provided on the grate 2; water filter holes 31 are provided on the water filter plate 3; the water filter plate 3 and the floor drain body 1 are both made of ceramic material, and the water filter plate 3 and the floor drain body 1 are processed into an integrated structure.

[0079] An adhesive made of hydrophobic nanoparticles is sprayed onto the upper surface of the ceramic plate and left to stand for 2 hours to form a super-hydrophobic layer on the upper surface of the water filter plate 3. The adhesive made of hydrophobic nanoparticles is prepared by:

[0080] 80 ml of ethanol and 12 ml of water were mixed evenly, and ammonia was added to adjust the pH to 7.5 and the temperature to 35° C. to obtain a first solution;

[0081] Add 2 ml of ethyl orthosilicate to the first solution, stir at room temperature for 3 h, then add 4 ml of hydrophobic raw material (perfluorooctyltrimethylsilane), and stir at 5.5 kHz and 25 ° C for 25 min, then add 2 ml of KH550 and stir at an ultrasonic frequency of 7 kHz and a temperature of 25 ° C for 40 min to obtain an adhesive prepared from hydrophobic nanoparticles.

[0082] The test results show that the contact angle of the super hydrophobic layer formed on the upper surface of the water filter plate 3 is ≥150° and the rolling angle is <10°.

[0083] By adjusting the pore diameter of the water filter hole 31 to 2-4 mm, the liquid seal height in the floor drain body 1 can be set to 2-10 cm, thereby completing the processing of the water-sealed and odor-proof floor drain.

[0084] Example 6

[0085] The difference from Example 5 is that the adhesive made of hydrophobic nanoparticles is bonded to the upper surface of the ceramic plate by dip coating, forming a super hydrophobic layer on the upper surface of the water filter plate 3 .

[0086] The rest are the same as in Example 5.

[0087] The test results show that the contact angle of the super hydrophobic layer formed on the upper surface of the water filter plate 3 is ≥150° and the rolling angle is <10°.

[0088] Example 7

[0089] The difference from Example 5 is that the adhesive made of hydrophobic nanoparticles is bonded to the upper surface of the ceramic plate by extrusion, forming a super-hydrophobic layer on the upper surface of the water filter plate 3.

[0090] The rest are the same as in Example 5.

[0091] The test results show that the contact angle of the super hydrophobic layer formed on the upper surface of the water filter plate 3 is ≥150° and the rolling angle is <10°.

[0092] It can be seen from the above specific embodiments that the water-sealed and odor-proof floor drain provided by the utility model has a super-hydrophobic layer arranged on the upper surface of the water filter plate, so that the upper surface of the water filter plate has super-hydrophobic ability, and utilizes its extremely high surface tension to achieve a liquid seal of a certain height inside the floor drain body. When the water level in the floor drain body is lower than the liquid seal height, the water maintains a certain height in the floor drain body, thereby achieving water-sealed and odor-proof; when the water level is higher than the liquid seal height, the water is quickly discharged from the water filter holes of the water filter plate, avoiding the problem of dirt deposition caused by the high water level. The utility model greatly simplifies the structure of the traditional water-sealed and odor-proof floor drain; the liquid seal is achieved by utilizing the super-hydrophobic layer on the upper surface of the water filter plate, which is easier to clean and not easy to clog compared to the traditional water trap; different liquid seal heights can be selected according to the actual usage scenario, and it will not dry out and return to odor due to factors such as time and dry weather, nor will it affect the drainage speed due to the large water seal height.

[0093] The water-sealed, odor-resistant floor drain according to the present invention has been described above by way of example with reference to the accompanying drawings. However, those skilled in the art will appreciate that various improvements may be made to the water-sealed, odor-resistant floor drain without departing from the scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A water-sealed and odor-proof floor drain, characterized in that: It includes floor drain body, grate and water filter plate; among which, The floor drain body is in the shape of a hollow funnel, and a fixing groove is provided on the inner side wall of the upper portion of the floor drain body; A clamping structure is provided on the periphery of the grate, and the grate is detachably arranged in the fixed slot through the clamping structure; a debris filtering hole is provided on the grate; The water filter plate is fixed to the inner lower part of the floor drain body, a super hydrophobic layer is provided on the upper surface of the water filter plate, and water filter holes are provided on the water filter plate; wherein, The pore size of the water filter hole is 2 to 4 mm; The contact angle of the super-hydrophobic layer is 120° to 170°; The liquid seal height inside the floor drain main body is 2 to 10 cm.

2. The water-sealed and odor-proof floor drain according to claim 1, characterized in that: The water filter plate and the floor drain body are an integrally formed structure.

3. The water-sealed and odor-proof floor drain according to claim 1, characterized in that: The water filter plate is a wear-resistant metal plate; The floor drain body is a wear-resistant metal floor drain body.

4. The water-sealed and odor-proof floor drain according to claim 3, characterized in that: The super-hydrophobic layer includes a micro-nano graded rough structure layer formed by femtosecond laser treatment on the surface of the wear-resistant metal plate and a low surface energy layer formed by adsorbing carbon-containing compounds on the upper surface of the micro-nano graded rough structure layer.

5. The water-sealed and odor-proof floor drain according to claim 3, characterized in that: The super-hydrophobic layer comprises a micro-nano graded rough structure layer formed by femtosecond laser treatment on the surface of the wear-resistant metal plate and a hydrophobic chemical modification layer arranged on the micro-nano graded rough structure layer.

6. The water-sealed and odor-proof floor drain according to claim 3, characterized in that: The wear-resistant metal plate is a stainless steel plate or an aluminum alloy plate.

7. The water-sealed and odor-proof floor drain according to claim 1, characterized in that: The water filter plate is a ceramic plate; The floor drain body is a ceramic floor drain body; The super-hydrophobic layer includes a nano-particle adhesive layer having super-hydrophobic properties disposed on the ceramic plate.

8. The water-sealed and odor-proof floor drain according to claim 1, characterized in that: The floor drain body is in the shape of a hollow funnel with an upper cylindrical body and a lower inverted cone.

9. The water-sealed and odor-proof floor drain according to claim 1, characterized in that: A drainage pipe connecting portion is provided at the bottom of the floor drain main body.

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