Water seal deodorization floor drain and processing method

Abstract

The invention provides a water seal odor-resistant floor drain and a processing method, and belongs to the technical field of building water supply and drainage. The upper surface of a water filter plate has super-hydrophobic capacity through a super-hydrophobic layer on the upper surface of the water filter plate, and liquid seal with a certain height is realized in a floor drain main body by utilizing extremely high surface tension of the water filter plate; when the water level in the floor drain main body is lower than the liquid seal height, water is kept at a certain height in the floor drain main body, and water seal deodorization is achieved; when the water level is higher than the liquid seal height, water is rapidly discharged from the water filtering holes of the water filtering plate, the problem of dirt deposition caused by the too high water level is avoided, and the structure of a traditional water seal deodorization floor drain is greatly simplified; liquid sealing is achieved through the super-hydrophobic layer on the upper surface of the water filtering plate, and compared with a traditional trap, cleaning is easier, and blocking is not prone to occurring; different liquid seal heights can be selected according to actual use scenes, odor return caused by dryness due to factors such as time and dry weather is avoided, and the drainage speed is not affected by large water seal height.

Description

Technical Field

[0001] The invention relates to the technical field of building water supply and drainage, and more specifically, to a water-sealed odor-proof floor drain and a processing method thereof. Background Art

[0002] The floor drain is an important interface between the drainage system and the indoor floor in the house. The quality of the floor drain directly affects the indoor air quality. The traditional water-sealed floor drain relies on the water to form a water seal to separate the living space from the pipe system. Its structure is a bell-shaped structure, like a buckled bowl structure buckled on the sewer pipe outlet, forming a "U"-shaped water trap, and the "water seal" in the water trap is used to achieve a sealing effect.

[0003] At present, the water seal of most water-sealed floor drains is shallow and the amount of water is too small, which will dry up and return to odor due to factors such as time and dry weather; but if the water seal is too deep, it will affect the drainage speed, and the deposited dirt will be more serious and difficult to clean. Because the sewer pipes and septic tanks of the floor drains are connected to the living space, if the water seal of the floor drain loses its function or the seal of the water-free floor drain is not closed tightly, the sewer will have no barrier with the indoor space, and the odor and toxic and harmful gases in the sewer will overflow along the pipes and spread in the room.

[0004] In summary, the current traditional water-sealed floor drain uses the "water seal" in the water trap to achieve a 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 stink; if it is too deep, it is easy to cause serious dirt deposition; the water trap is easy to clog and difficult to clean. Summary of the invention

[0005] In view of the above problems, the purpose of the present invention is to provide a water-sealed odor-proof floor drain and a processing method to solve the problems in the prior art that 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 being easy to dry up and return to stink when it is too shallow, and 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 present invention provides a method for processing a water-sealed odor-proof floor drain, comprising the following steps:

[0007] S1. Making a base structure for a water-sealed and odor-proof floor drain; wherein the base structure comprises a floor drain body in a hollow funnel shape, a grate detachably mounted on the inner upper part of the floor drain body, and a water filter plate fixed on the inner lower part of the floor drain body; a debris filter hole is arranged on the grate; and a water filter hole is arranged on the water filter plate;

[0008] S2. According to the material of the water filter plate, the upper surface of the water filter plate is subjected to super-hydrophobic treatment to form a super-hydrophobic layer on the upper surface of the water filter plate;

[0009] S3. According to the contact angle of the super-hydrophobic layer and the size of the water filtering hole, the liquid seal height in the floor drain body is set to complete the processing of the water-sealed odor-proof floor drain.

[0010] In addition, a preferred solution is that, in the process of manufacturing the base structure of the water-sealed odor-proof floor drain, the water filter plate and the floor drain body are processed into an integrated structure.

[0011] In addition, a preferred solution is that, in the process of manufacturing the base structure of the water-sealed odor-proof floor drain, the floor drain body is processed into a hollow funnel shape with an upper cylindrical body and a lower inverted cone.

[0012] In addition, a preferred solution is that, according to the material of the water filter plate, the upper surface of the water filter plate is subjected to super-hydrophobic treatment to form a super-hydrophobic layer on the upper surface of the water filter plate, including:

[0013] When the water filter plate is made of a wear-resistant metal plate, a micro-nano graded rough structure layer is formed on the upper surface of the wear-resistant metal plate by performing femtosecond laser processing on the upper surface of the wear-resistant metal plate;

[0014] The micro-nano graded rough structure layer absorbs carbon-containing compounds in the atmosphere, and forms 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.

[0015] In addition, a preferred solution is that, according to the material of the water filter plate, the upper surface of the water filter plate is subjected to super-hydrophobic treatment to form a super-hydrophobic layer on the upper surface of the water filter plate, including:

[0016] When the water filter plate is made of a wear-resistant metal plate, a micro-nano graded rough structure layer is formed on the upper surface of the wear-resistant metal plate by performing femtosecond laser processing on the upper surface of the wear-resistant metal plate;

[0017] 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.

[0018] In addition, a preferred embodiment is that the hydrophobic chemical modification material is any one of fluorosilane, thiol and stearic acid solution.

[0019] In addition, a preferred solution is that the wear-resistant metal plate is a stainless steel plate or an aluminum alloy plate.

[0020] In addition, a preferred solution is that, according to the material of the water filter plate, the upper surface of the water filter plate is subjected to super-hydrophobic treatment to form a super-hydrophobic layer on the upper surface of the water filter plate, including:

[0021] When the water filter plate is made of a ceramic plate, an adhesive made of hydrophobic nanoparticles is bonded to the upper surface of the ceramic plate by any one of spraying, dipping, and extrusion to form a super-hydrophobic layer on the upper surface of the water filter plate.

[0022] In addition, a preferred solution is that, in the process of setting the liquid seal height in the floor drain body according to the contact angle of the super hydrophobic layer and the size of the water filter hole to complete the processing of the water seal deodorizing floor drain,

[0023] The pore size of the water filter hole is 2 to 4 mm;

[0024] The contact angle of the super hydrophobic layer is 120° to 170°;

[0025] The liquid seal height inside the floor drain main body is 2 to 10 cm.

[0026] The present invention provides a water-sealed odor-proof floor drain, which is manufactured by the above-mentioned water-sealed odor-proof floor drain manufacturing method; wherein:

[0027] The water-sealed odor-proof floor drain comprises a floor drain body in the shape of a hollow funnel, a grate detachably mounted on the inner upper portion of the floor drain body, and a water filter plate fixed on the inner lower portion of the floor drain body; debris filter holes are arranged on the grate; water filter holes are arranged on the water filter plate; and a super-hydrophobic layer is arranged on the upper surface of the water filter plate.

[0028] It can be seen from the above technical scheme that the water-sealed odor-proof floor drain and processing method provided by the present invention, through the super-hydrophobic layer on the upper surface of the water filter plate, the upper surface of the water filter plate has super-hydrophobic ability, and utilizes its extremely high surface tension to achieve a certain height of liquid seal 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 odor-proof; when the water level is higher than the liquid seal height, the water is quickly discharged from the water filter hole of the water filter plate to avoid the problem of dirt deposition caused by the excessively high water level. The present invention greatly simplifies the structure of the traditional water-sealed odor-proof floor drain; the super-hydrophobic layer on the upper surface of the water filter plate is used to achieve liquid seal, which is easier to clean and less prone to clogging than the traditional water trap; and different liquid seal heights can be selected according to the actual use scenario, and will not dry up and return to odor due to factors such as time and dry weather, nor will the drainage speed be affected by the large water seal height.

[0029] In order to achieve the above and related purposes, one or more aspects of the present invention include the features that will be described in detail later. The following description and the accompanying drawings describe some exemplary aspects of the present invention in detail. However, these aspects indicate only some of the various ways in which the principles of the present invention can be used. In addition, the present invention is intended to include all these aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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 apparent and easy to understand. In the accompanying drawings:

[0031] Figure 1 It is a schematic structural diagram of a water-sealed odor-proof floor drain according to an embodiment of the present invention;

[0032] Figure 2 is a schematic structural diagram of a floor drain body according to an embodiment of the present invention;

[0033] Figure 3 is a structural schematic diagram of a grate according to an embodiment of the present invention;

[0034] Figure 4 The present invention is a flowchart of a method for processing a water-sealed and odor-proof floor drain according to an embodiment of the present invention.

[0035] In the attached drawings, 1 is a floor drain body, 11 is a fixing slot, 2 is a grate, 3 is a water filter plate, 31 is a water filter hole, and 4 is a drain pipe connection part.

[0036] The same reference numerals throughout the drawings indicate similar or corresponding features or functions. DETAILED DESCRIPTION

[0037] In the following description, for the purpose of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. However, it is apparent that these embodiments may also be implemented without these specific details.

[0038] In view of the above-mentioned prior art, the traditional water-sealed floor drain uses a "water seal" in the water trap to achieve a sealing effect, and the water seal height is difficult to maintain. If it is too shallow, it is easy to dry up and return to stink; if it is too deep, it is easy to cause serious dirt deposition, and the water trap is easy to be clogged and difficult to clean. The present invention proposes a water-sealed odor-proof floor drain and a processing method.

[0039] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0040] In order to illustrate the water seal deodorizing floor drain and processing method provided by the present invention, Figure 1 The structure of a water-sealed odor-proof floor drain according to an embodiment of the present invention is shown; Figure 2 The structure of the floor drain body according to an embodiment of the present invention is shown; Figure 3 The structure of the grate according to the embodiment of the present invention is shown; Figure 4 The flowchart of the method for processing a water-sealed and odor-proof floor drain according to an embodiment of the present invention is shown.

[0041] like Figures 1 to 4As shown together, the processing method of the water-sealed odor-proof floor drain provided by the present invention comprises the following steps:

[0042] S1. A base structure for making a water-sealed and odor-proof floor drain; wherein the base structure includes a floor drain body 1 in the shape of a hollow funnel, a grate 2 detachably mounted on the upper inner portion of the floor drain body 1, and a water filter plate 3 fixed on 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.

[0043] S2. According to the material of the water filter plate 3 , the upper surface of the water filter plate 3 is subjected to super-hydrophobic treatment to form a super-hydrophobic layer on the upper surface of the water filter plate 3 .

[0044] S3. According to the contact angle of the super-hydrophobic layer and the size of the water filtering hole 31, the liquid sealing height in the floor drain body 1 is set to complete the processing of the water-sealed odor-proof floor drain.

[0045] The super-hydrophobic layer on the upper surface of the water filter plate 3 is used to make the upper surface of the water filter plate 3 have super-hydrophobic ability. By utilizing its extremely high surface tension, a liquid seal of a certain height is achieved inside the floor drain body 1. When the water level in the floor drain body 1 is lower than the liquid seal height, the water maintains a certain height in the floor drain body 1 to achieve 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 3 to avoid the problem of dirt deposition caused by the excessively high water level. The present invention greatly simplifies the structure of the traditional water seal and odor prevention floor drain; the super-hydrophobic layer on the upper surface of the water filter plate 3 is used to achieve liquid seal, 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 use scenario, and it will not dry up and return to odor due to factors such as time and dry weather, nor will the drainage speed be affected by the large water seal height.

[0046] As a preferred solution of the present invention, in the process of manufacturing the base structure of the water-sealed odor-proof floor drain, the water filter plate 3 and the floor drain body 1 are processed into an integrated structure.

[0047] Specifically, the water filter plate 3 and the floor drain body 1 are processed into an integrated structure so that the two are fixed more firmly, which can be achieved by mold processing.

[0048] As a preferred solution of the present invention, in the process of manufacturing the base structure of the water-sealed odor-proof floor drain, the floor drain body 1 is processed into a hollow funnel shape with an upper cylindrical body and a lower inverted cone.

[0049] It should be noted that processing the floor drain body 1 into a hollow funnel shape with an upper cylindrical body and a lower inverted cone is a preferred solution of the present invention, and the present invention does not make any special limitation to this.

[0050] As a preferred solution of the present invention, in the process of manufacturing the base structure of the water-sealed odor-proof floor drain, a drain pipe connecting portion 4 is processed at the bottom of the floor drain body 1 .

[0051] Specifically, the drain pipe connecting portion 4 is a cylindrical tubular structure, which is convenient for connecting to the drain pipe.

[0052] As a preferred solution of the present invention, according to the material of the water filter plate 3, the upper surface of the water filter plate 3 is subjected to super-hydrophobic treatment to form a super-hydrophobic layer on the upper surface of the water filter plate 3, including:

[0053] When the water filter plate 3 is made of a wear-resistant metal plate, a micro-nano graded rough structure layer is formed on the upper surface of the wear-resistant metal plate by performing femtosecond laser processing on the upper surface of the wear-resistant metal plate;

[0054] The micro-nano graded rough structure layer absorbs carbon-containing compounds in the atmosphere, and forms 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 .

[0055] 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, so that the upper surface of the water filter plate 3 absorbs low surface energy substances such as carbon-containing compounds in the atmosphere, thereby reducing the surface energy to form a super hydrophobic layer on the upper surface of the water filter plate 3. Laser treatment combined with natural modification is a simple super hydrophobic layer processing method, but the efficiency of this method is relatively low. 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 160-220 mm / s, and a super-hydrophobic layer with a contact angle ≥ 150° can be prepared.

[0056] As a preferred solution of the present invention, according to the material of the water filter plate 3, the upper surface of the water filter plate 3 is subjected to super-hydrophobic treatment to form a super-hydrophobic layer on the upper surface of the water filter plate 3, including:

[0057] When the water filter plate 3 is made of a wear-resistant metal plate, a micro-nano graded rough structure layer is formed on the upper surface of the wear-resistant metal plate by performing femtosecond laser processing on the upper surface of the wear-resistant metal plate;

[0058] 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 .

[0059] Specifically, when the water filter plate 3 is a wear-resistant metal plate, for some intrinsically hydrophilic materials (contact angle < 90°), a super-hydrophobic layer can be formed on the upper surface of the water filter plate 3 by femtosecond laser treatment + chemical modification. This method is more efficient. For example, stainless steel or aluminum alloy are intrinsically hydrophilic materials. After laser induction, the upper surface of the water filter plate 4 contains more polar sites. The larger polarity will promote the dissociation and adsorption of water in the environment on the surface of the substrate, thereby making it hydrophilic. At this time, various low surface energy chemical reagents such as fluorosilane or lauric acid or stearic acid solution are used for chemical modification. After chemical modification, its surface shows excellent hydrophobic effect. For example, after the femtosecond laser treatment obtains the 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, which can reduce the surface free energy, thereby forming a super-hydrophobic layer on the upper surface of the water filter plate 3.

[0060] 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 of forming a super-hydrophobic layer on the upper surface of the water filter plate 3 is not limited to the above-mentioned laser treatment combined with natural modification or laser treatment combined with chemical modification. It can also be laser treatment combined with heat treatment, electrodeposition and other processes. 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 great surface tension and achieve a certain degree of liquid sealing.

[0061] As a preferred embodiment of the present invention, the hydrophobic chemical modification material is any one of fluorosilane, thiol and stearic acid solution.

[0062] 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.

[0063] As a preferred solution of the present invention, the wear-resistant metal plate is a stainless steel plate or an aluminum alloy plate.

[0064] It should be noted that the wear-resistant metal plate in the technical solution of the present invention is preferably but not limited to a stainless steel plate or an aluminum alloy plate, and the present invention does not make any special limitation on this.

[0065] As a preferred solution of the present invention, according to the material of the water filter plate 3, the upper surface of the water filter plate 3 is subjected to super-hydrophobic treatment to form a super-hydrophobic layer on the upper surface of the water filter plate 3, including:

[0066] When the water filter plate 3 is made of a ceramic plate, an adhesive made of hydrophobic nanoparticles is bonded to the upper surface of the ceramic plate by any one of spraying, dipping, and extrusion to form a super hydrophobic layer on the upper surface of the water filter plate 3 .

[0067] 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 hydrophobic nanoparticles can adopt the finished product in the prior art, for example, the hydrophobic agent in the preparation and application of a highly durable cement-based surface super hydrophobic agent and its preparation and application disclosed in the patent application number 202311740946.7 previously applied by the present applicant (i.e., the adhesive prepared from hydrophobic nanoparticles in the present invention) or the hydrophobic agent in the preparation method of a highly durable cement-based surface hydrophobic agent disclosed in the patent application number 202310793956.0 previously applied by the present applicant (i.e., the adhesive prepared from hydrophobic nanoparticles in the present invention). The present invention is not particularly limited to this.

[0068] As a preferred embodiment of the present invention, in the process of setting the liquid seal height inside the floor drain body 1 according to the contact angle of the super hydrophobic layer and the size of the water filter hole to complete the processing of the water seal and odor-proof floor drain, 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.

[0069] Specifically, the pore size 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.

[0070] like Figures 1 to 3 As shown together, the water-sealed odor-proof floor drain provided by the present invention is processed by the processing method of the water-sealed odor-proof floor drain provided by the present invention as described above; wherein,

[0071] The water-sealed odor-proof floor drain comprises 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 on the lower inner portion of the floor drain body 1; a debris filter hole is arranged on the grate 2; a water filter hole 31 is arranged on the water filter plate 3; and a super-hydrophobic layer is arranged on the upper surface of the water filter plate 3.

[0072] Among them, the grate 2 can be detachably installed on the inner upper part of the floor drain body 1 by annularly setting a fixed slot 11 on the upper inner wall of the floor drain body 1, and setting a clamping structure around the grate 2, such as a clamping block matching the fixed slot 11, so that the grate 2 can be detachably set in the fixed slot 11 through the clamping structure.

[0073] The water-sealed odor-proof floor drain provided by the present invention realizes liquid sealing by using the super-hydrophobic layer of the water filter plate 3. The deposited debris is filtered through the grate 2 and the water filter plate 3, and is not easy to be blocked. Even if it is blocked, it is very convenient to clean.

[0074] In order to better explain the water seal deodorizing floor drain and the processing method provided by the present invention in detail, the following examples are given:

[0075] Example 1

[0076] A base structure for making a water-sealed odor-proof floor drain; wherein the base structure includes a floor drain body 1 in the shape of a hollow funnel, a grate 2 detachably mounted on the upper inner portion of the floor drain body 1, and a water filter plate 3 fixed on the lower inner portion of the floor drain body 1; debris filter holes are arranged on the grate 2; water filter holes 31 are arranged 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.

[0077] A micro-nano graded rough structure layer is constructed on the upper surface of the water filter plate 3 by using a pulsed laser, and the micro-nano graded rough structure layer is exposed to the air, and it is naturally modified by the air for more than 15 days. The laser-induced microstructure greatly increases the specific surface area, so that the upper surface of the water filter plate 3 absorbs low surface energy substances such as carbon compounds in the atmosphere, thereby reducing the surface energy of the micro-nano graded rough structure layer, forming a low surface energy layer, so that a super hydrophobic layer is formed on the upper surface of the water filter plate 3. After testing, the contact angle of the super hydrophobic layer on the upper surface of the water filter plate 3 is ≥150°, and the rolling angle is <10°.

[0078] By adjusting the aperture 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 odor-proof floor drain.

[0079] Example 2

[0080] A base structure for making a water-sealed odor-proof floor drain; wherein the base structure includes a floor drain body 1 in the shape of a hollow funnel, a grate 2 detachably mounted on the upper inner portion of the floor drain body 1, and a water filter plate 3 fixed on the lower inner portion of the floor drain body 1; debris filter holes are arranged on the grate 2; water filter holes 31 are arranged 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.

[0081] A micro-nano graded rough structure layer was constructed on the upper surface of the water filter plate 3 using a pulsed laser. After laser induction, the surface of the water filter plate contained more polar sites. The larger polarity would promote the dissociation and adsorption of water in the environment on the surface of the substrate, thus making it hydrophilic. The micro-nano graded rough structure layer formed after laser treatment was immediately placed in 0.095 g / mL stearic acid for 2 hours to reduce the free energy of the surface of the micro-nano graded rough structure layer, so as to form a super hydrophobic layer on the upper surface of the water filter plate 3. After testing, 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°.

[0082] By adjusting the aperture 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 odor-proof floor drain.

[0083] Example 3

[0084] The difference from Example 2 is that the micro-nano graded 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 graded rough structure layer to form a super hydrophobic layer on the upper surface of the water filter plate 3. After testing, the contact angle of the super hydrophobic layer on the upper surface of the water filter plate 3 is ≥150°, and the rolling angle is <10°.

[0085] The rest is the same as in Example 2.

[0086] Example 4

[0087] The difference from Example 2 is that the micro-nano graded rough structure layer formed after laser treatment is immediately placed in a 0.095 g / mL n-hexane solution for 2 hours to reduce the surface free energy of the micro-nano graded rough structure layer to form a super hydrophobic layer on the upper surface of the water filter plate 3. After testing, the contact angle of the super hydrophobic layer on the upper surface of the water filter plate 3 is ≥150°, and the rolling angle is <10°.

[0088] The rest is the same as in Example 2.

[0089] Example 5

[0090] A base structure for making a water-sealed odor-proof floor drain; wherein the base structure includes a floor drain body 1 in the shape of a hollow funnel, a grate 2 detachably mounted on the upper inner portion of the floor drain body 1, and a water filter plate 3 fixed on the lower inner portion of the floor drain body 1; debris filter holes are arranged on the grate 2; water filter holes 31 are arranged 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.

[0091] The adhesive prepared from the hydrophobic nanoparticles is sprayed onto the upper surface of the ceramic plate, and after being left naturally for 2 hours, a super hydrophobic layer is formed on the upper surface of the water filter plate 3; wherein the preparation method of the adhesive prepared from the hydrophobic nanoparticles is as follows:

[0092] 80 ml of ethanol and 12 ml of water were mixed evenly, and ammonia water was added to adjust the pH to 7.5 and the temperature to 35° C. to obtain a first solution;

[0093] Add 2 ml of tetraethyl orthosilicate to the first solution, stir at room temperature for 3 hours, then add 4 ml of hydrophobic raw material (perfluorooctyltrimethylsilane), and stir at 5.5 kHz and 25°C for 25 minutes, then add 2 ml of KH550 and stir at an ultrasonic frequency of 7 kHz and a temperature of 25°C for 40 minutes to obtain an adhesive prepared from hydrophobic nanoparticles.

[0094] After testing, 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°.

[0095] By adjusting the aperture 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 odor-proof floor drain.

[0096] Example 6

[0097] 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, so as to form a super hydrophobic layer on the upper surface of the water filter plate 3 .

[0098] The rest are the same as in Example 5.

[0099] The contact angle of the super hydrophobic layer formed on the upper surface of the water filter plate 3 was detected to be ≥150°, and the rolling angle was <10°.

[0100] Example 7

[0101] 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, so as to form a super hydrophobic layer on the upper surface of the water filter plate 3 .

[0102] The rest are the same as in Example 5.

[0103] The contact angle of the super hydrophobic layer formed on the upper surface of the water filter plate 3 was detected to be ≥150°, and the rolling angle was <10°.

[0104] It can be seen from the above specific embodiments that the water-sealed odor-proof floor drain and processing method provided by the present invention, through the super-hydrophobic layer on the upper surface of the water filter plate, makes the upper surface of the water filter plate have super-hydrophobic ability, and utilizes its extremely high surface tension to achieve a certain height of liquid seal 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 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 to avoid the problem of dirt deposition caused by the excessively high water level. The present invention greatly simplifies the structure of the traditional water-sealed 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 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 up 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.

[0105] As described above, the water-sealed odor-proof floor drain and the processing method according to the present invention are described by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various improvements can be made to the water-sealed odor-proof floor drain and the processing method according to the present invention without departing from the content of the present invention. Therefore, the protection scope of the present invention should be determined by the content of the attached claims.

Claims

1. A method for processing a water-sealed deodorizing floor drain, characterized in that: The steps include: S1. Making a base structure for a water-sealed and odor-proof floor drain; wherein the base structure comprises a floor drain body in a hollow funnel shape, a grate detachably mounted on the inner upper part of the floor drain body, and a water filter plate fixed on the inner lower part of the floor drain body; a debris filter hole is arranged on the grate; and a water filter hole is arranged on the water filter plate; S2. According to the material of the water filter plate, the upper surface of the water filter plate is subjected to super-hydrophobic treatment to form a super-hydrophobic layer on the upper surface of the water filter plate; S3. According to the contact angle of the super-hydrophobic layer and the size of the water filtering hole, the liquid seal height in the floor drain body is set to complete the processing of the water-sealed odor-proof floor drain.

2. The method for processing a water-sealed deodorizing floor drain according to claim 1, characterized in that: In the process of making the base structure of the water-sealed and odor-proof floor drain, The water filter plate and the floor drain body are processed into an integrated structure.

3. The method for processing a water-sealed deodorizing floor drain according to claim 1, characterized in that: In the process of making the base structure of the water-sealed and odor-proof floor drain, The floor drain body is processed into a hollow funnel shape with an upper cylindrical body and a lower inverted cone body.

4. The method for processing a water-sealed deodorizing floor drain according to claim 1, characterized in that: The method of performing super-hydrophobic treatment on the upper surface of the water filter plate according to the material of the water filter plate to form a super-hydrophobic layer on the upper surface of the water filter plate comprises: When the water filter plate is made of a wear-resistant metal plate, a micro-nano graded rough structure layer is formed on the upper surface of the wear-resistant metal plate by performing femtosecond laser processing on the upper surface of the wear-resistant metal plate; The micro-nano graded rough structure layer absorbs carbon-containing compounds in the atmosphere, and forms 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.

5. The method for processing a water-sealed deodorizing floor drain according to claim 1, characterized in that: The method of performing super-hydrophobic treatment on the upper surface of the water filter plate according to the material of the water filter plate to form a super-hydrophobic layer on the upper surface of the water filter plate comprises: When the water filter plate is made of a wear-resistant metal plate, a micro-nano graded rough structure layer is formed on the upper surface of the wear-resistant metal plate by performing femtosecond laser processing on the upper surface of the wear-resistant metal plate; 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.

6. The method for processing a water-sealed deodorizing floor drain according to claim 5, characterized in that: The hydrophobic chemical modification material is any one of fluorosilane, thiol and stearic acid solution.

7. The method for processing a water-sealed deodorizing floor drain according to claim 4 or 5, characterized in that: The wear-resistant metal plate is a stainless steel plate or an aluminum alloy plate.

8. The method for processing a water-sealed deodorizing floor drain according to claim 1, characterized in that: The method of performing super-hydrophobic treatment on the upper surface of the water filter plate according to the material of the water filter plate to form a super-hydrophobic layer on the upper surface of the water filter plate comprises: When the water filter plate is made of a ceramic plate, an adhesive made of hydrophobic nanoparticles is bonded to the upper surface of the ceramic plate by any one of spraying, dipping, and extrusion to form a super-hydrophobic layer on the upper surface of the water filter plate.

9. The method for processing a water-sealed deodorizing floor drain according to claim 1, characterized in that: In the process of setting the liquid seal height in the floor drain body according to the contact angle of the super hydrophobic layer and the size of the water filter hole to complete the processing of the water seal anti-odor floor drain, 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.

10. A water-sealed odor-proof floor drain, characterized in that: It is processed by the processing method of the water-sealed odor-proof floor drain according to any one of claims 1 to 9; wherein, The water-sealed odor-proof floor drain comprises a floor drain body in the shape of a hollow funnel, a grate detachably mounted on the inner upper portion of the floor drain body, and a water filter plate fixed on the inner lower portion of the floor drain body; debris filter holes are arranged on the grate; water filter holes are arranged on the water filter plate; and a super-hydrophobic layer is arranged on the upper surface of the water filter plate.

Images