A floating floor drain capable of preventing sewer odor
By designing a float-type floor drain, the drain automatically adjusts its drainage status under different water levels and negative pressure conditions, solving the problem of odor backflow from the sewer and achieving effective odor prevention and smooth drainage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGCHUN TEACHER MENG ENGINEERING MANAGEMENT SERVICES CO LTD
- Filing Date
- 2025-09-03
- Publication Date
- 2026-07-21
AI Technical Summary
Existing floor drains are prone to backflow of odors from the sewers, affecting the quality of life for residents, and current technology is unable to effectively solve this problem.
Design a float drain, including a hammer-shaped float, an elliptical float, or a spherical float, which automatically opens or blocks the drainage pipe under different water levels and negative pressure conditions to prevent sewer backflow odor.
Under normal and negative pressure conditions, the float can automatically adjust the drainage status to prevent sewer backflow and ensure smooth drainage, thus protecting indoor air quality.
Smart Images
Figure CN224531859U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of building engineering technology, and in particular relates to a floor drain that prevents sewer backflow odor. Background Technology
[0002] In existing building water supply and drainage systems, the phenomenon of floor drains backflowing odors from the sewer system is very common, affecting the quality of life for residents. Various methods have been employed to prevent this, but most have failed to effectively solve the problem.
[0003] The national standard GB / T27710-2020 "Floor Drains" provides the basic structures of various common floor drains. Appendix A lists the following: Figure A.1 Water-sealed floor drain (internal connection) and Figure A.2 Water-sealed floor drain (external connection). When water evaporates, the water seal fails, causing backflow of odors from the sewer. Figure A.3 Sealed floor drain effectively solves the problem of backflow, but it requires manual opening each time it's used, and backflow can still occur when the water flow is low or interrupted. Figure A.4 Sidewall floor drain suffers from severe backflow. Figure A.5 Mechanical seal floor drain (vertical return type) has a vertical automatic return device that is easily blocked by debris, still causing backflow. Figure A.5 Mechanical seal floor drain (rotary return type) has a significantly reduced drain pipe area, affecting drainage efficiency; furthermore, the rotary automatic return device is also easily blocked by debris, leading to backflow.
[0004] Therefore, there is an urgent need to develop a floor drain that can better prevent sewer backflow and improve indoor air quality. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide a float floor drain that prevents sewer backflow odor. Under normal indoor air pressure, when the water depth in the floor drain exceeds 10mm, the float rises to open the drainage. When there is no water in the floor drain or the water depth does not exceed 10mm, the float falls to block the drainage pipe and prevent sewer backflow odor. When the range hood in the residential kitchen is turned on, the indoor negative pressure generally does not exceed 350Pa. At this time, the weight of the float can resist the float rising due to the indoor negative pressure, preventing the indoor negative pressure from causing the float to rise and causing sewer backflow odor.
[0006] A float-type floor drain for preventing backflow of odors from sewers includes a float and a drain body, wherein the float is disposed inside the drain body;
[0007] The float is a hammer-shaped float, an elliptical float, or a spherical float;
[0008] The hammer-shaped float includes a top cover and a cup; the top cover is a cap-shaped shell with an inner notch around the bottom perimeter; the upper part of the cup is a cup-shaped shell, the middle part has an inverted conical shell, and the lower part has a hanging handle; the upper edge of the cup-shaped shell has an outer notch, and the outer notch and the inner notch cooperate to form an integral structure of the top cover and the cup;
[0009] The elliptical float includes a top cover and a base. The base is a disc-shaped shell with an outer notch around the top perimeter. The outer notch matches the inner notch of the top cover to form an integral structure between the top cover and the base.
[0010] The spherical float is a hollow sphere;
[0011] The drain body can be a drain body with a raised edge or a drain body without a raised edge;
[0012] The convex rim drain body has a bowl-shaped structure and a drain pipe is provided at the bottom. The inner diameter of the convex rim drain body is larger than the outer diameter of the drain pipe. The top of the drain pipe is provided with a convex rim. The convex rim protrudes upward relative to the bottom of the convex rim drain body along the top periphery of the drain pipe. The convex rim drain body and the drain pipe are integrated and fixedly connected.
[0013] The rimless drain body has a bowl-shaped structure with a drain pipe at the bottom. The inner diameter of the rimless drain body is larger than the outer diameter of the drain pipe. The top of the drain pipe and the bottom of the rimless drain body are connected in an integrated, fixed arc shape.
[0014] Under normal indoor air pressure, when the water depth in the drain body exceeds 10mm, the float rises to open the drainage; under normal indoor air pressure, when there is no water in the drain body or the water depth does not exceed 10mm, the float falls to block the drainage pipe and prevent the sewer from backflowing odors.
[0015] When the relative negative pressure in the room does not exceed 350Pa, and the water depth in the drain body exceeds 5mm, the float will rise to start the drainage; when the relative negative pressure in the room does not exceed 350Pa, and there is no water in the drain body or the water depth does not exceed 5mm, the float will fall to block the drainage pipe and prevent the sewer from backflowing odors.
[0016] The float is a hollow structure or a solid structure with a specific gravity of less than 1.
[0017] Through the above design scheme, this utility model can bring the following beneficial effects: A float-type floor drain that prevents sewer backflow odor, under normal indoor air pressure, when the water depth in the floor drain exceeds 10mm, the hammer-shaped float, elliptical float, or spherical float rises to open the drainage. When there is no water in the floor drain or the water depth does not exceed 10mm, the float falls to block the drainage pipe, preventing sewer backflow odor. When there is no excess water in the floor drain, the float will only rise when the indoor negative pressure exceeds 350Pa, but the indoor negative pressure generally does not exceed 350Pa. When the indoor negative pressure does not exceed 350Pa, the float will not be lifted by the lift generated by the negative pressure under its own weight, and the float can still block the drainage pipe. When water enters the floor drain and the buoyancy force on the float is greater than the float's own weight, the float rises to open the drainage. When there is no water in the floor drain, the float blocks the drainage pipe. When there is water in the floor drain, the drainage pipe achieves a water seal. For the hammer-shaped float, when it tilts, the shank is blocked by the drain pipe, preventing the float from flipping. When the drain has little or no water, the float automatically resets under its own weight and the guiding action of the inverted conical shell. For the elliptical float, when it tilts, it is limited by the surrounding space, preventing it from flipping. It also automatically resets under its own weight when the drain has little or no water. This invention features a simple and mature manufacturing and installation process, low cost, smooth drainage, effectively prevents sewer backflow odors, protects indoor air quality, and is suitable for widespread application. Attached Figure Description
[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:
[0019] Figure 1 This is a front view of the top cover of this utility model;
[0020] Figure 2 These are top view and bottom view of the top cover of this invention.
[0021] Figure 3 This is a cross-sectional schematic diagram of the top cover in this utility model;
[0022] Figure 4 This is a front view of the cup / bowl of this utility model;
[0023] Figure 5 This is a cross-sectional schematic diagram of the cup in this utility model;
[0024] Figure 6 This is a front view schematic diagram of the hammer-shaped float in this utility model;
[0025] Figure 7 This is a front view of the chassis in this utility model;
[0026] Figure 8 This is a cross-sectional schematic diagram of the chassis in this utility model;
[0027] Figure 9 This is a front view schematic diagram of the elliptical float in this utility model;
[0028] Figure 10 This is a front view schematic diagram of a drain body with a raised edge and a drain body without a raised edge in this utility model;
[0029] Figure 11 This is a schematic cross-sectional view of the drain body with a raised edge in this invention.
[0030] Figure 12 This is a schematic cross-sectional view of the non-protruding drain body in this invention.
[0031] Figure 13 This is a cross-sectional schematic diagram of the combination of the convex drain body and the hammer-shaped float in this utility model;
[0032] Figure 14 This is a cross-sectional schematic diagram of the drain body with a raised edge in this utility model when the hammer-shaped float in the drain body is raised to open the drainage.
[0033] Figure 15 This is a cross-sectional schematic diagram of the hammer-shaped float in the drain body with a convex edge of the present invention, showing the extreme tilt position of the hammer-shaped float when it floats up to open the drainage.
[0034] Figure 16 This is a cross-sectional schematic diagram of the combination of the convex drain body and the elliptical float in this utility model.
[0035] Figure 17 This is a cross-sectional schematic diagram of the drain body with a raised edge in this utility model when the elliptical float in the drain body is raised to open the drainage.
[0036] Figure 18 This is a cross-sectional schematic diagram of the extreme tilt position of the elliptical float when the elliptical float in the drain body with a convex edge of this utility model floats up and opens for drainage.
[0037] Figure 19 This is a cross-sectional schematic diagram of the combination of the drain body without protrusion and the hammer-shaped float in this utility model;
[0038] Figure 20 This is a cross-sectional schematic diagram of the hammer-shaped float in the drain body without protruding edge of this utility model when it floats up and opens to drain water.
[0039] Figure 21 This is a cross-sectional schematic diagram of the extreme tilt position of the hammer-shaped float when the drain body without a protruding edge in this utility model is opened to drain water.
[0040] Figure 22 This is a cross-sectional schematic diagram of the combination of the drain body without protruding edge and the elliptical float in this utility model;
[0041] Figure 23 This is a cross-sectional schematic diagram of the elliptical float in the drain body without a raised edge of the present invention when the drain is opened to drain water.
[0042] Figure 24 This is a cross-sectional schematic diagram of the extreme tilt position of the elliptical float when the elliptical float in the drain body without a convex edge of this utility model floats up and opens for drainage.
[0043] Figure 25 This is a cross-sectional schematic diagram of the combination of the convex drain body and the spherical float in this utility model;
[0044] Figure 26 This is a cross-sectional schematic diagram of the drain body with a convex edge in this utility model when the spherical float in the drain body floats up and opens to drain water.
[0045] Figure 27 This is a cross-sectional schematic diagram of the combination of the drain body without protrusion and the spherical float in this utility model;
[0046] Figure 28 This is a cross-sectional schematic diagram of the spherical float in the drain body without a raised edge of the present invention when it floats up to open the drainage.
[0047] In the diagram, 1-hammer-shaped float, 2-top cover, 3-inner notch, 4-cup, 5-outer notch, 6-inverted conical shell, 7-handle, 8-drain body with convex edge, 9-convex edge, 10-cover ring, 11-drain pipe, 12-filter screen, 13-grate, 14-drain pipe, 15-rubber ring, 101-elliptical float, 102-spherical float, 201-base, 801-drain body without convex edge. Detailed Implementation
[0048] A type of float drain that prevents sewer odors from backing up, such as Figures 1 to 28 As shown, it includes a float and a drain body. The float is set inside the drain body. The float can be a hammer-shaped float 1, an elliptical float 101, or a spherical float 102. The drain body can be a drain body 8 with a raised edge or a drain body 801 without a raised edge.
[0049] The hammer-shaped float 1 includes a top cover 2 and a cup 4, which are fixedly connected. The top cover 2 is a cap-shaped shell with an inner notch 3 around its bottom perimeter. The upper part of the cup 4 is a cup-shaped shell with an inverted conical shell 6 in the middle and a hanging handle 7 at the bottom. The upper edge of the cup-shaped shell has an outer notch 5, which cooperates with the inner notch 3 of the top cover 2 to combine the top cover 2 and the cup 4 into a single unit to form the hammer-shaped float 1.
[0050] The elliptical float 101 includes a top cover 2 and a base plate 201, and the top cover 2 and the base plate 201 are fixedly connected; the base plate 201 is a disc-shaped shell with an outer notch 5 on the top periphery, and the outer notch 5 cooperates with the inner notch 3 of the top cover 2 to combine the top cover 2 and the base plate 201 into an elliptical float 101.
[0051] The spherical float 102 is a hollow sphere;
[0052] The convex-edged drain body 8 has a bowl-shaped structure and a drain pipe 11 is provided at the bottom. The inner diameter of the convex-edged drain body 8 is larger than the outer diameter of the drain pipe 11. The top of the drain pipe 11 is provided with a convex edge 9. The convex-edged drain body 8 and the drain pipe 11 are integrally manufactured and fixedly connected.
[0053] The drain body 801 without protruding edge has a bowl-shaped structure and a drain pipe 11 is provided at the bottom. The inner diameter of the drain body 801 without protruding edge is larger than the outer diameter of the drain pipe 11. The top of the drain pipe 11 and the bottom of the drain body 801 without protruding edge are connected in an arc shape and are integrally manufactured and fixedly connected.
[0054] The hammer-shaped float 1 is installed inside the drain body 8 with a raised edge, and the handle 7 of the hammer-shaped float 1 extends downward into the drain pipe 11.
[0055] The elliptical float 101 is disposed inside the drain body 8 with a raised edge, and the top cover 2 of the elliptical float 101 is at the top.
[0056] The spherical float 102 is disposed inside the drain body 8 with a raised edge;
[0057] The hammer-shaped float 1 is installed inside the drain body 801 without a protruding edge, and the handle 7 of the hammer-shaped float 1 extends downward into the drain pipe 11.
[0058] The elliptical float 101 is disposed inside the drain body 801 without a protruding edge, and the top cover 2 of the elliptical float 101 is at the top.
[0059] The spherical float 102 is installed inside the drain body 8.
[0060] A type of float drain that prevents sewer odors from backing up, such as Figures 1 to 28As shown, the hammer-shaped float 1, the elliptical float 101, and the spherical float 102 are hollow or solid, made of a lightweight material with a specific gravity of less than 1. Under normal indoor air pressure, when the water depth in the drain exceeds 10 mm, the hammer-shaped float 1, the elliptical float 101, or the spherical float 102 rises to open the drainage. When there is no water in the drain or the water depth does not exceed 10 mm, the float falls to block the drainage pipe and prevent the sewer from refluxing. When there is no excess water in the drain, the hammer-shaped float 1, the elliptical float 101, or the spherical float 102 floats when the indoor negative pressure exceeds 350 Pa.
[0061] Example 1:
[0062] Preparation and application of a float-type floor drain to prevent sewer backflow odor, such as... Figures 1-6 , Figure 10 , Figure 11 , Figures 13-15 As shown, the steps include the following steps, and the following steps are performed in sequence:
[0063] Step 1: Preparing the float
[0064] Preparation such as Figure 6 The hammer-shaped float 1 shown is as follows: Figures 1-6 As shown, the hammer-shaped float 1 includes a top cover 2, an inner notch 3, a cup 4, an outer notch 5, an inverted conical shell 6, and a handle 7. The hammer-shaped float 1 is an assembly of the top cover 2 and the cup 4 fixedly connected. The top cover 2 is a cap-shaped shell with an inner notch 3 around its bottom periphery. The inner notch 3 is located on the inner side of the bottom periphery of the top cover 2 and cooperates with the outer notch 5. The upper part of the cup 4 is a cup-shaped shell with an outer notch 5 around its top periphery, an inverted conical shell 6 in the middle, and a handle 7 at the bottom. The outer notch 5 is located on the outer side of the top periphery of the cup 4 and cooperates with the inner notch 3. The inverted conical shell 6 is an inverted conical shell, and its upper part is fixedly connected to the lower part of the upper cup-shaped shell of the cup 4. The handle 7 is located below the inverted conical shell 6 and is fixedly connected to the lower part of the inverted conical shell 6.
[0065] After the top cover 2 and the cup 4 are prepared respectively, the top cover 2 and the cup 4 are fixedly connected at the mating point of the inner notch 3 and the outer notch 5 to complete the preparation of the hammer-shaped float 1;
[0066] The weight control of the hammer-shaped float 1 is such that the hammer-shaped float 1 floats when the water head pressure at the top of the relative convex edge 9 exceeds 10 mm, and the hammer-shaped float 1 can only float when the indoor negative pressure exceeds 350 Pa.
[0067] Step 2: Prepare the floor drain
[0068] Preparation such as Figure 10 and Figure 11The drain shown includes a drain body 8 with a raised rim, a raised rim 9, a cover ring 10, a drain pipe 11, a filter screen 12, and a grate 13. The drain body 8 with a raised rim has a bowl-shaped structure, with a drain pipe 11 at the bottom. The inner diameter of the drain body 8 with a raised rim is larger than the outer diameter of the drain pipe 11. A raised rim 9 is provided at the top of the drain pipe 11. The raised rim 9 protrudes upward relative to the bottom of the drain body 8 along the top periphery of the drain pipe 11. The drain body 8 with a raised rim and the drain pipe 11 are integrally manufactured and fixedly connected.
[0069] Step 3: Install float drain
[0070] like Figure 13 As shown, install the floor drain using the conventional method. Slide the rubber ring 15 around the top circumference of the drain pipe 14, insert the drain pipe 11 of the floor drain body 8 with the raised edge into the drain pipe 14, and seal the drain pipe 11 and the drain pipe 14 with the rubber ring 15. Install the cover ring 10, put the hammer-shaped float 1 into the floor drain body 8 with the raised edge, and install the filter screen 12 and the grate 13 to complete the installation of the float floor drain.
[0071] Step 4: Application Scenarios of Float Drains
[0072] like Figure 13 As shown, under normal indoor air pressure, when there is no water in the drain body 8 with a raised edge or the water depth does not exceed 10mm, the hammer-shaped float 1 falls down to block the top of the drain pipe 11, preventing the sewer from backflowing with odor; when the indoor relative negative pressure does not exceed 350Pa, when there is no water in the drain body 8 with a raised edge or the water depth does not exceed 5mm, the hammer-shaped float 1 falls down to block the top of the drain pipe 11, preventing the sewer from backflowing with odor.
[0073] like Figure 14 As shown, under normal indoor air pressure, when the water depth in the drain body 8 with a raised edge exceeds 10mm, the hammer-shaped float 1 floats up to open the drainage, ensuring smooth drainage; when the indoor relative negative pressure does not exceed 350Pa, when the water depth in the drain body 8 with a raised edge exceeds 5mm, the hammer-shaped float 1 floats up to open the drainage, ensuring smooth drainage.
[0074] like Figure 15 As shown, when the hammer-shaped float 1 tilts, the hammer-shaped float 1 will not overturn due to the resistance of the drain pipe 11 to the plumb bob 7. When the drain is not activated, the hammer-shaped float 1 automatically returns to its original position. Figure 13 As shown, the hammer-shaped float 1 resumes blocking the top of the drain pipe 11, preventing the sewer from emitting odors.
[0075] Example 2:
[0076] Preparation and application of a float-type floor drain to prevent sewer backflow odor, such as... Figures 1-3 , Figures 7-9 , Figure 10 , Figure 11 , Figures 16-18 As shown, the steps include the following steps, and the following steps are performed in sequence:
[0077] Step 1: Preparing the float
[0078] Preparation such as Figure 9 The elliptical float 101 shown is as follows: Figures 1-3 , Figures 7-9 As shown, the elliptical float 101 includes a top cover 2, an inner notch 3, a base 201, and an outer notch 5; the elliptical float 101 is a combination of the top cover 2 and the base 201 fixedly connected; the top cover 2 is a cap-shaped shell with an inner notch 3 around its bottom perimeter; the inner notch 3 is located on the inner side of the bottom perimeter of the top cover 2 and cooperates with the outer notch 5; the base 201 is a disc-shaped shell with an outer notch 5 around its top perimeter, and the outer notch 5 cooperates with the inner notch 3 of the top cover 2 to combine the top cover and the base into an elliptical float 101;
[0079] After the top cover 2 and the base 201 are prepared respectively, the top cover 2 and the base 201 are fixedly connected at the mating points of the inner notch 3 and the outer notch 5 to complete the preparation of the elliptical float 101;
[0080] The weight control of the elliptical float 101 is such that the elliptical float 101 floats when the water head pressure at the top of the relative convex edge 9 exceeds 10 mm, and the elliptical float 101 can only float when the indoor negative pressure exceeds 350 Pa.
[0081] Step 2: Prepare the floor drain
[0082] Preparation such as Figure 10 and Figure 11 The drain shown includes a drain body 8 with a raised rim, a raised rim 9, a cover ring 10, a drain pipe 11, a filter screen 12, and a grate 13. The drain body 8 with a raised rim has a bowl-shaped structure, with a drain pipe 11 at the bottom. The inner diameter of the drain body 8 with a raised rim is larger than the outer diameter of the drain pipe 11. A raised rim 9 is provided at the top of the drain pipe 11. The raised rim 9 protrudes upward relative to the bottom of the drain body 8 along the top periphery of the drain pipe 11. The drain body 8 with a raised rim and the drain pipe 11 are integrally manufactured and fixedly connected.
[0083] Step 3: Install float drain
[0084] like Figure 16As shown, install the floor drain using the conventional method. Slide the rubber ring 15 around the top circumference of the drain pipe 14, insert the drain pipe 11 of the floor drain body 8 with the raised edge into the drain pipe 14, and seal the drain pipe 11 and the drain pipe 14 with the rubber ring 15. Install the cover ring 10, put the oval float 101 into the floor drain body 8 with the raised edge, and install the filter screen 12 and the grate 13 to complete the installation of the float floor drain.
[0085] Step 4: Application Scenarios of Float Drains
[0086] like Figure 16 As shown, under normal indoor air pressure, when there is no water in the drain body 8 with a raised edge or the water depth does not exceed 10mm, the elliptical float 101 falls down to block the top of the drain pipe 11, preventing the sewer from backflowing with odor; when the indoor relative negative pressure does not exceed 350Pa, when there is no water in the drain body 8 with a raised edge or the water depth does not exceed 5mm, the elliptical float 101 falls down to block the top of the drain pipe 11, preventing the sewer from backflowing with odor.
[0087] like Figure 17 As shown, under normal indoor air pressure, when the water depth in the drain body 8 with a raised edge exceeds 10mm, the elliptical float 101 floats up to open the drainage, ensuring smooth drainage; when the indoor relative negative pressure does not exceed 350Pa, when the water depth in the drain body 8 with a raised edge exceeds 5mm, the elliptical float 101 floats up to open the drainage, ensuring smooth drainage.
[0088] like Figure 18 As shown, when the elliptical float 101 tilts, it will not flip due to the resistance from the inner wall of the drain body 8 with its convex edge. When drainage is not activated, the elliptical float 101 will automatically return to its original position. Figure 13 As shown, the elliptical float 101 resumes sealing the top of the drain pipe 11, preventing the sewer from emitting odors.
[0089] Example 3:
[0090] Preparation and application of a float-type floor drain to prevent sewer backflow odor, such as... Figures 1-6 , Figure 10 , Figure 12 , Figures 19-21 As shown, the steps include the following steps, and the following steps are performed in sequence:
[0091] Step 1: Preparing the float
[0092] Preparation such as Figure 6 The hammer-shaped float 1 shown is as follows: Figures 1-6As shown, the hammer-shaped float 1 includes a top cover 2, an inner notch 3, a cup 4, an outer notch 5, an inverted conical shell 6, and a handle 7. The hammer-shaped float 1 is an assembly of the top cover 2 and the cup 4 fixedly connected. The top cover 2 is a cap-shaped shell with an inner notch 3 around its bottom periphery. The inner notch 3 is located on the inner side of the bottom periphery of the top cover 2 and cooperates with the outer notch 5. The upper part of the cup 4 is a cup-shaped shell with an outer notch 5 around its top periphery, an inverted conical shell 6 in the middle, and a handle 7 at the bottom. The outer notch 5 is located on the outer side of the top periphery of the cup 4 and cooperates with the inner notch 3. The inverted conical shell 6 is an inverted conical shell, and its upper part is fixedly connected to the lower part of the upper cup-shaped shell of the cup 4. The handle 7 is located below the inverted conical shell 6 and is fixedly connected to the lower part of the inverted conical shell 6.
[0093] After the top cover 2 and the cup 4 are prepared respectively, the top cover 2 and the cup 4 are fixedly connected at the mating point of the inner notch 3 and the outer notch 5 to complete the preparation of the hammer-shaped float 1;
[0094] The weight control of the hammer-shaped float 1 is such that the water head pressure around the top of the drain pipe 11 of the drain body 801 with no protruding edge exceeds 10 mm, and the hammer-shaped float 1 can only float when the indoor negative pressure exceeds 350 Pa.
[0095] Step 2: Prepare the floor drain
[0096] Preparation such as Figure 10 and Figure 12 The drain shown includes a drain body 801 without a raised edge, a cover ring 10, a drain pipe 11, a filter screen 12, and a grate 13; the drain body 801 without a raised edge has a bowl-shaped structure, with a drain pipe 11 at the bottom. The inner diameter of the drain body 801 without a raised edge is larger than the outer diameter of the drain pipe 11. The top of the drain pipe 11 and the bottom of the drain body 801 without a raised edge are connected in an arc shape and are integrally manufactured and fixedly connected.
[0097] Step 3: Install float drain
[0098] like Figure 19 As shown, the floor drain is installed using the conventional method. A rubber ring 15 is fitted around the top circumference of the drain pipe 14. The drain pipe 11 of the floor drain body 801 without a raised edge is inserted into the drain pipe 14. The drain pipe 11 and the drain pipe 14 are sealed by the rubber ring 15. The cover ring 10 is installed. A hammer-shaped float 1 is placed in the floor drain body 801 without a raised edge. The filter screen 12 and the grate 13 are installed to complete the installation of the float floor drain.
[0099] Step 4: Application Scenarios of Float Drains
[0100] like Figure 19As shown, under normal indoor air pressure, when there is no water in the drain body 801 without a raised edge or the water depth does not exceed 10mm, the hammer-shaped float 1 falls down to block the top of the drain pipe 11, preventing the sewer from backflowing with odor; when the indoor relative negative pressure does not exceed 350Pa, when there is no water in the drain body 801 without a raised edge or the water depth does not exceed 5mm, the hammer-shaped float 1 falls down to block the top of the drain pipe 11, preventing the sewer from backflowing with odor.
[0101] like Figure 20 As shown, under normal indoor air pressure, when the water depth in the drain body 801 without protruding edge exceeds 10mm, the hammer-shaped float 1 floats up to open the drainage, ensuring smooth drainage; when the indoor relative negative pressure does not exceed 350Pa, when the water depth in the drain body 801 without protruding edge exceeds 5mm, the hammer-shaped float 1 floats up to open the drainage, ensuring smooth drainage.
[0102] like Figure 21 As shown, when the hammer-shaped float 1 tilts, the hammer-shaped float 1 will not overturn due to the resistance of the drain pipe 11 to the plumb bob 7. When the drain is not activated, the hammer-shaped float 1 automatically returns to its original position. Figure 19 As shown, the hammer-shaped float 1 resumes blocking the top of the drain pipe 11, preventing the sewer from emitting odors.
[0103] Example 4:
[0104] Preparation and application of a float-type floor drain to prevent sewer backflow odor, such as... Figures 1-3 , Figures 7-9 , Figure 10 , Figure 12 , Figures 22-24 As shown, the steps include the following steps, and the following steps are performed in sequence:
[0105] Step 1: Preparing the float
[0106] Preparation such as Figure 9 The elliptical float 101 shown is as follows: Figures 1-3 , Figures 7-9 As shown, the elliptical float 101 includes a top cover 2, an inner notch 3, a base 201, and an outer notch 5; the elliptical float 101 is a combination of the top cover 2 and the base 201 fixedly connected; the top cover 2 is a cap-shaped shell with an inner notch 3 around its bottom perimeter; the inner notch 3 is located on the inner side of the bottom perimeter of the top cover 2 and cooperates with the outer notch 5; the base 201 is a disc-shaped shell with an outer notch 5 around its top perimeter, and the outer notch 5 cooperates with the inner notch 3 of the top cover 2 to combine the top cover and the base into an elliptical float 101;
[0107] After the top cover 2 and the base 201 are prepared respectively, the top cover 2 and the base 201 are fixedly connected at the mating points of the inner notch 3 and the outer notch 5 to complete the preparation of the elliptical float 101;
[0108] The weight control of the elliptical float 101 is such that the elliptical float 101 floats when the water head pressure around the top of the drain pipe 11 of the drain body 801 with no protruding edge exceeds 10 mm, and the elliptical float 101 can only float when the indoor negative pressure exceeds 350 Pa.
[0109] Step 2: Prepare the floor drain
[0110] Preparation such as Figure 10 and Figure 12 The drain shown includes a drain body 801 without a raised edge, a cover ring 10, a drain pipe 11, a filter screen 12, and a grate 13; the drain body 801 without a raised edge has a bowl-shaped structure, with a drain pipe 11 at the bottom. The inner diameter of the drain body 801 without a raised edge is larger than the outer diameter of the drain pipe 11. The top of the drain pipe 11 and the bottom of the drain body 801 without a raised edge are connected in an arc shape and are integrally manufactured and fixedly connected.
[0111] Step 3: Install float drain
[0112] like Figure 22 As shown, install the floor drain using the conventional method. Slide the rubber ring 15 around the top circumference of the drain pipe 14, insert the drain pipe 11 of the rimless floor drain body 801 into the drain pipe 14, and seal the drain pipe 11 and the drain pipe 14 with the rubber ring 15. Install the cover ring 10, place the oval float 101 into the rimless floor drain body 801, and install the filter screen 12 and the grate 13 to complete the installation of the float floor drain.
[0113] Step 4: Application Scenarios of Float Drains
[0114] like Figure 22 As shown, under normal indoor air pressure, when there is no water in the drain body 801 without a raised edge or the water depth does not exceed 10mm, the elliptical float 101 falls down to block the top of the drain pipe 11, preventing the sewer from backflowing with odor; when the indoor relative negative pressure does not exceed 350Pa, when there is no water in the drain body 801 without a raised edge or the water depth does not exceed 5mm, the elliptical float 101 falls down to block the top of the drain pipe 11, preventing the sewer from backflowing with odor.
[0115] like Figure 23 As shown, under normal indoor air pressure, when the water depth in the drain body 801 without a raised edge exceeds 10mm, the elliptical float 101 floats up to open the drainage, ensuring smooth drainage; when the indoor relative negative pressure does not exceed 350Pa, when the water depth in the drain body 801 without a raised edge exceeds 5mm, the elliptical float 101 floats up to open the drainage, ensuring smooth drainage.
[0116] like Figure 24As shown, when the elliptical float 101 tilts, it will not flip due to the resistance from the inner wall of the drain body 801 without a raised edge. When drainage is not activated, the elliptical float 101 automatically returns to its original position. Figure 22 As shown, the elliptical float 101 resumes sealing the top of the drain pipe 11, preventing the sewer from emitting odors.
[0117] Example 5:
[0118] Preparation and application of a float-type floor drain to prevent sewer backflow odor, such as... Figure 10 , Figure 11 , Figure 25 , Figure 26 As shown, the steps include the following steps, and the following steps are performed in sequence:
[0119] Step 1: Select the float
[0120] Choose as Figure 25 , Figure 26 The spherical float 102 shown is either hollow or solid, made of a lightweight material with a specific gravity of less than 1.
[0121] The weight control of the selected spherical float 102 is such that the hammer float 1 floats when the head pressure at the top of the relative convex edge 9 exceeds 10 mm, and the spherical float 102 can only float when the indoor negative pressure exceeds 350 Pa.
[0122] Step 2: Prepare the floor drain
[0123] Preparation such as Figure 10 and Figure 11 The drain shown includes a drain body 8 with a raised rim, a raised rim 9, a cover ring 10, a drain pipe 11, a filter screen 12, and a grate 13. The drain body 8 with a raised rim has a bowl-shaped structure, with a drain pipe 11 at the bottom. The inner diameter of the drain body 8 with a raised rim is larger than the outer diameter of the drain pipe 11. A raised rim 9 is provided at the top of the drain pipe 11. The raised rim 9 protrudes upward relative to the bottom of the drain body 8 along the top periphery of the drain pipe 11. The drain body 8 with a raised rim and the drain pipe 11 are integrally manufactured and fixedly connected.
[0124] Step 3: Install float drain
[0125] like Figure 25 As shown, install the floor drain using the conventional method. Slide the rubber ring 15 around the top circumference of the drain pipe 14, insert the drain pipe 11 of the floor drain body 8 with the raised edge into the drain pipe 14, and seal the drain pipe 11 and the drain pipe 14 with the rubber ring 15. Install the cover ring 10, put the spherical float 102 into the floor drain body 8 with the raised edge, and install the filter screen 12 and the grate 13 to complete the installation of the float floor drain.
[0126] Step 4: Application Scenarios of Float Drains
[0127] like Figure 25 As shown, under normal indoor air pressure, when there is no water in the drain body 8 with a raised edge or the water depth does not exceed 10mm, the spherical float 102 falls down to block the top of the drain pipe 11, preventing the sewer from backflowing with odor; when the indoor relative negative pressure does not exceed 350Pa, when there is no water in the drain body 8 with a raised edge or the water depth does not exceed 5mm, the spherical float 102 falls down to block the top of the drain pipe 11, preventing the sewer from backflowing with odor.
[0128] like Figure 26 As shown, under normal indoor air pressure, when the water depth in the drain body 8 with a raised edge exceeds 10mm, the spherical float 102 floats up to open the drainage, ensuring smooth drainage; when the indoor relative negative pressure does not exceed 350Pa, when the water depth in the drain body 8 with a raised edge exceeds 5mm, the spherical float 102 floats up to open the drainage, ensuring smooth drainage.
[0129] When drainage is not activated, the spherical float 102 can automatically reset to its original position. Figure 25 As shown, the spherical float 102 resumes sealing the top of the drain pipe 11, preventing the sewer from emitting odors.
[0130] Example 6:
[0131] Preparation and application of a float-type floor drain to prevent sewer backflow odor, such as... Figure 10 , Figure 12 , Figure 27 , Figure 28 As shown, the steps include the following steps, and the following steps are performed in sequence:
[0132] Step 1: Select the float
[0133] Choose as Figure 27 , Figure 28 The spherical float 102 shown is either hollow or solid, made of a lightweight material with a specific gravity of less than 1.
[0134] The weight control of the selected spherical float 102 is such that the spherical float 102 floats when the water depth in the drain body 801 without a raised edge exceeds 10mm, and the spherical float 102 can only float when the indoor negative pressure exceeds 350Pa.
[0135] Step 2: Prepare the floor drain
[0136] Preparation such as Figure 10 and Figure 12The drain shown includes a drain body 801 without a raised edge, a cover ring 10, a drain pipe 11, a filter screen 12, and a grate 13; the drain body 801 without a raised edge has a bowl-shaped structure, with a drain pipe 11 at the bottom. The inner diameter of the drain body 801 without a raised edge is larger than the outer diameter of the drain pipe 11. The top of the drain pipe 11 and the bottom of the drain body 801 without a raised edge are connected in an arc shape and are integrally manufactured and fixedly connected.
[0137] Step 3: Install float drain
[0138] like Figure 27 As shown, the floor drain is installed using the conventional method. A rubber ring 15 is fitted around the top circumference of the drain pipe 14. The drain pipe 11 of the floor drain body 801 without a raised edge is inserted into the drain pipe 14. The drain pipe 11 and the drain pipe 14 are sealed by the rubber ring 15. The cover ring 10 is installed. A spherical float 102 is placed in the floor drain body 801 without a raised edge. The filter screen 12 and the grate 13 are installed to complete the installation of the float floor drain.
[0139] Step 4: Application Scenarios of Float Drains
[0140] like Figure 27 As shown, under normal indoor air pressure, when there is no water in the drain body 801 without a raised edge or the water depth does not exceed 10mm, the spherical float 102 falls down to block the top of the drain pipe 11, preventing the sewer from backflowing with odor; when the indoor relative negative pressure does not exceed 350Pa, when there is no water in the drain body 801 without a raised edge or the water depth does not exceed 5mm, the spherical float 102 falls down to block the top of the drain pipe 11, preventing the sewer from backflowing with odor.
[0141] like Figure 28 As shown, under normal indoor air pressure, when the water depth in the drain body 801 without a raised edge exceeds 10mm, the spherical float 102 floats up to open the drainage, ensuring smooth drainage; when the indoor relative negative pressure does not exceed 350Pa, when the water depth in the drain body 801 without a raised edge exceeds 5mm, the spherical float 102 floats up to open the drainage, ensuring smooth drainage.
[0142] When drainage is not activated, the spherical float 102 can automatically reset to its original position. Figure 27 As shown, the spherical float 102 resumes sealing the top of the drain pipe 11, preventing the sewer from emitting odors.
[0143] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any modifications, equivalent substitutions, and improvements made by those skilled in the art within the scope of the technology disclosed in this utility model, and within the spirit and principles of this utility model, should be included within the protection scope of this utility model. Furthermore, all content not described in detail in this specification belongs to the prior art known to those skilled in the art.
Claims
1. A float-type floor drain for preventing backflow of odors from sewers, comprising a float and a drain body, characterized in that: The float is disposed inside the drain body; The float is a hammer-shaped float (1), an elliptical float (101), or a spherical float (102); The hammer-shaped float (1) includes a top cover (2) and a cup (4); the top cover (2) is a cap-shaped shell with an inner notch (3) around the bottom perimeter; the upper part of the cup (4) is a cup-shaped shell, the middle part is an inverted conical shell (6), and the lower part is a hanging handle (7); the upper edge of the cup-shaped shell is provided with an outer notch (5), and the outer notch (5) and the inner notch (3) cooperate to form an integral structure of the top cover (2) and the cup (4); The elliptical float (101) includes a top cover (2) and a base (201). The base (201) is a disc-shaped shell with an outer notch (5) around the top perimeter. The outer notch (5) and the inner notch (3) of the top cover (2) cooperate to form an integral structure of the top cover (2) and the base (201). The spherical float (102) is a hollow sphere; The drain body is either a drain body with a raised edge (8) or a drain body without a raised edge (801); The convex-edged drain body (8) has a bowl-shaped structure and a drain pipe (11) is provided at the bottom. The inner diameter of the convex-edged drain body (8) is larger than the outer diameter of the drain pipe (11). The top of the drain pipe (11) is provided with a convex edge (9). The convex edge (9) protrudes upward along the top periphery of the drain pipe (11) relative to the bottom of the convex-edged drain body (8). The convex-edged drain body (8) and the drain pipe (11) are designed as an integral part and fixedly connected. The rimless drain body (801) has a bowl-shaped structure and a drain pipe (11) is provided at the bottom. The inner diameter of the rimless drain body (801) is larger than the outer diameter of the drain pipe (11). The top of the drain pipe (11) and the bottom of the rimless drain body (801) are connected in an integrated fixed arc shape.
2. A float-type floor drain for preventing backflow of odors from sewers according to claim 1, characterized in that: Under normal indoor air pressure, when the water depth in the drain body exceeds 10mm, the float will rise to open the drainage; under normal indoor air pressure, when there is no water in the drain body or the water depth does not exceed 10mm, the float will fall to block the drainage pipe and prevent the sewer from backflowing odors. When the relative negative pressure in the room does not exceed 350Pa, and the water depth in the drain body exceeds 5mm, the float will rise to start the drainage; when the relative negative pressure in the room does not exceed 350Pa, and there is no water in the drain body or the water depth does not exceed 5mm, the float will fall to block the drainage pipe and prevent the sewer from backflowing odors.
3. A float-type floor drain for preventing backflow of odors from sewers according to claim 1, characterized in that: The float is a hollow structure or a solid structure with a specific gravity of less than 1.