An engineering floor drain with a water outlet trough and a construction method

Abstract

The present invention relates to the technical field of drainage fittings for indoor construction projects, and specifically relates to an engineering floor drain with a drain trough and a construction method. It includes a surface cover plate, a circular floor drain filter screen, a square floor drain, and a floor drain base funnel. The bottom end of the surface cover plate is sequentially provided with a square floor drain, and a circular floor drain filter screen is snap-connected inside the square floor drain. The outside of the square floor drain is sleeved with a floor drain base funnel. A drainage groove is inserted and connected under the surface cover plate. The drainage groove is composed of a diversion plate, a snap plate, and threaded holes. The two sides of the diversion plate are connected with snap plates, and threaded holes are symmetrically arranged on the snap plates in the axial direction of the diversion plate. By setting a drainage groove and a groove fixing plate with snap connection and closing with a drain trough head, the drainage area and efficiency are increased, and the drainage groove and the groove fixing plate are installed slightly lower than the tile layer, so that the drainage work of the strip floor drain can be realized without raising the surrounding ground.

Description

Technical Field

[0001] The invention relates to the technical field of drainage accessories for indoor construction projects, in particular to an engineering floor drain with a lower water tank and a construction method. Background Art

[0002] The floor drain is an important interface connecting the drainage pipe system and the indoor floor. As an important component of the drainage system in a residence, its performance directly affects the quality of indoor air and is very important for odor control in the bathroom. The commonly used floor drains on the market are relatively simple in structure, and most of them are filtered by a single filter mesh, and the filtering effect is not good. In daily use, there will be more or less water accumulation between the waterproof layer and the surface masonry layer. The sides of traditional floor drains are mostly sealed structures, and the bottom is directly connected to the drain pipe, which cannot drain the accumulated water. When using strip floor drains in similar spaces such as traditional engineering kitchens and food operation rooms, it is basically necessary to raise the ground to accommodate the installation of strip drainage grooves, which is costly and inconvenient to operate. At the same time, the floor drain installation method on the market is prone to gap leakage, and there are great limitations in use. Summary of the invention

[0003] The object of the present invention is to provide an engineering floor drain with a lower water tank and a construction method to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an engineering floor drain with a lower water tank and a construction method, comprising a surface cover plate, a circular floor drain filter, a square floor drain and a floor drain base funnel, wherein the bottom end of the surface cover plate is sequentially provided with a square floor drain, and the inner side of the square floor drain is snap-connected with a circular floor drain filter, and the outer side of the square floor drain is sleeved with a floor drain base funnel;

[0005] The lower side of the surface cover plate is plug-connected with a drainage groove, which is composed of a guide plate, a clamping plate and a threaded hole. The two sides of the guide plate are connected with the clamping plate, and the clamping plate is symmetrically arranged with threaded holes in the axial direction of the guide plate. The clamping plate is clamped and connected with the groove fixing plate;

[0006] The groove fixing plate is composed of a support plate and a slot. The support plate is provided with slots at axial positions on both sides, and the notches on the slots match with the protrusions on the clamping plate. The outer port of the drainage groove groove fixing plate after clamping connection matches with the built-in groove of the drainage groove head.

[0007] Preferably, the drainage ditch head consists of a seal, a side plate and a screw hole, the inner groove of the seal matches the combined size of the drainage ditch and the ditch fixing plate respectively, and the side of the seal is inlaid with a side plate, and a screw hole is set through the lower end of the seal.

[0008] Preferably, two sets of screw holes are symmetrically arranged on the side of the groove fixing plate, and corresponding screw holes are arranged at the corresponding positions on the drain trough cover head. The two are fitted together and locked by screws.

[0009] Preferably, the surface cover plate is rectangular, and the length and width dimensions of the rectangle are the same as the outer dimensions of the drain groove and the groove fixing plate. The surface cover plate is composed of a cover plate body, filter holes and drain holes. The cover plate body is provided with filter holes and drain holes, and the filter holes are evenly arranged around the drain holes.

[0010] Preferably, the circular floor drain filter screen consists of a filter screen frame, a side filter screen and a bottom filter screen. The side filter screen is inlaid on the side of the filter screen frame, and the bottom filter screen is inlaid at the bottom end of the filter screen frame.

[0011] Preferably, a circular groove with the same outer diameter as the bottom end of the circular floor drain filter screen is arranged on one side of the drain groove and the groove fixing plate, and the circular groove is smaller than the outer edge of the upper port of the circular floor drain filter screen.

[0012] Preferably, after the drain groove and the groove fixing plate are snap-connected, threaded holes with the same size are arranged in the corresponding vertical direction and locked through screws.

[0013] Preferably, the bottom end of the floor drain base funnel is connected to the S-shaped water seal through a drain pipe, and a detachable inspection cover with a threaded connection is arranged at the bottom of the S-shaped water seal.

[0014] Preferably, a construction method of an engineering floor drain with a drain trough includes the following steps:

[0015] S1: Installation of the floor drain base funnel of the floor drain base. First, place the positioning and setting-out device at the preset position for the floor drain base funnel, and temporarily fix it with wooden wedges in the reserved holes on each floor. The reserved holes are holes that fit the outer diameter of the floor drain base funnel, and formwork is carried out. After the formwork is completed, clean the sundries in the gaps, and pour the C20 fine aggregate concrete for the first time to one-third of the thickness of the reinforced concrete floor slab. On the second day, continue to pour the C20 fine aggregate concrete to 5 mm from the slab surface to ensure compaction. On the third day, carry out curing, and snap-fit the floor drain base funnel into the hole to complete the installation process of the floor drain base funnel. If there is no reserved hole, a special puncher can be used to drill a hole with the corresponding size and repair it. The bottom end of the base funnel is seamlessly connected to the external S-shaped water seal;

[0016] S2: Construction of the waterproof layer. After the funnel of the floor drain base is clamped into the hole of the concrete layer, an L-shaped structure is formed with the concrete layer. Brush the second layer of waterproof coating on the upper edge of the funnel of the floor drain base and extend it to the outside of the contact surface with the concrete. Extend and apply it on the inner wall of the funnel of the floor drain base to one-third of the inner wall of the funnel of the floor drain base. The L-shaped waterproof layer is rolled together seamlessly. After storing for one day, roll the first layer of polypropylene waterproof material on the same position twice to complete the construction of the waterproof layer;

[0017] S3: Assembly of the floor drain body. Clamp and connect the drainage groove to be installed with the groove fixing plate, and sleeve the drainage groove head at the end position. Lock the three with screws, and clamp and connect the lower edge of the groove fixing plate with the square floor drain to complete the assembly of the floor drain body;

[0018] S4: Installation of the floor drain body. According to the elevation marked on the wall, make plastering cakes with 1:2 dry hard cement mortar, spread the mortar, and make a leveling layer of cement mortar with a minimum thickness of 15 mm, sloping towards the floor drain. Press and polish twice to make the cement mortar leveling layer. For the hole position at the upper edge of the funnel of the floor drain base, it should be about 10 mm higher than the surrounding ground, and a circular hole shape is reserved. Apply cement on the side of the floor drain body and align it with the formed circular hole for clamping;

[0019] S5: Installation of tiles. According to the elevation reserved by the line marking in Step 4, apply a mixture of cement and yellow sand on the bottom of the cut tiles, and fit the tiles on the cement mortar leveling layer to form a tile layer. The height of the tile layer is higher than the upper edge of the floor drain body, and a gradually decreasing slope surface is set at a position 150 mm away from the floor drain body;

[0020] S6: Completion of the floor drain installation. Cover the surface cover plate in the top groove of the drainage groove and lock it with screws. Seal the gaps on all four sides of the floor drain with glass glue or other adhesives.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] By providing a clamped and connected drainage groove and groove fixing plate, and closed by a drainage groove head, the present invention can expand the drainage path, increase the drainage area and efficiency, and the drainage groove and groove fixing plate are installed slightly lower than the tile layer, so that the drainage of the strip floor drain can be realized without raising the surrounding ground;

[0023] The present invention improves the installation construction process of the floor drain. Preset holes at the stage of building concrete, so that the connection of the floor drain is tighter, and two layers of waterproof layers are applied to prevent water accumulation in the connection gaps between the floor drain and the concrete and cement mortar layers to the greatest extent. The accumulated water can be drained through the connection between the square floor drain and the funnel of the floor drain base and the filters provided on both of them, reducing the harm caused by long-term water accumulation. Brief Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 It is a three-dimensional exploded view of the overall structure of the present invention;

[0026] Figure 2 It is a top view structure diagram of the surface cover plate in the present invention;

[0027] Figure 3 It is a front view structure diagram of the surface cover plate in the present invention;

[0028] Figure 4 It is a side view structure diagram of the surface cover plate in the present invention;

[0029] Figure 5 For the present invention Figure 3 It is an enlarged structure diagram of part A in the present invention;

[0030] Figure 6 It is a front view structure diagram of the circular floor drain filter in the present invention;

[0031] Figure 7 It is a front view of the unfolded structure of the circular floor drain filter in the present invention;

[0032] Figure 8 It is a side view cross-sectional structure diagram of the circular floor drain filter in the present invention;

[0033] Figure 9 It is a top view structure diagram of the circular floor drain filter in the present invention;

[0034] Figure 10 It is a side view structure diagram of the drainage groove in the present invention;

[0035] Figure 11 For the present invention Figure 10 It is an enlarged structure diagram of part B in the present invention;

[0036] Figure 12 It is a side view structure diagram of the drainage groove in the present invention;

[0037] Figure 13 It is a top view structure diagram of the drainage groove in the present invention;

[0038] Figure 14 It is a side view structure diagram of the groove fixing plate in the present invention;

[0039] Figure 15a For the present invention Figure 14 Schematic enlarged structure diagram of part C in the present invention;

[0040] Figure 15b Top view structure diagram of the groove fixing plate in the present invention;

[0041] Figure 16 Three-dimensional structure diagram of the drain trough head in the present invention;

[0042] Figure 17 Front view structure diagram of the combined state of the drain groove and the groove fixing plate and the drain trough head in the present invention;

[0043] Figure 18 Schematic enlarged structure diagram of the installation and forming state of the floor drain of the present invention;

[0044] Figure 19 Schematic structure diagram of the installation and forming state of the floor drain and the S-trapping bend in the present invention.

[0045] In the figure: 1. Surface cover plate; 101. Cover plate body; 102. Filter holes; 103. Drain holes; 2. Circular floor drain filter; 201. Filter frame; 202. Side filter; 203. Bottom filter; 3. Square floor drain; 4. Floor drain base funnel; 5. Drain groove; 501. Deflector; 502. Clamping plate; 503. Threaded hole; 6. Groove fixing plate; 601. Support plate; 602. Card slot; 7. Drain trough head; 701. Sealing; 702. Side plate; 703. Screw hole; 8. Ceramic tile layer; 9. Cement mortar leveling layer; 10. First layer of polypropylene waterproof material layer; 11. Second layer of waterproof coating layer. Detailed implementation manners

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] Please refer to Figure 1-19 , an embodiment provided by the present invention: An engineering floor drain with a drain trough and a construction method, including a surface cover plate 1, a circular floor drain filter 2, a square floor drain 3 and a floor drain base funnel 4. The bottom end of the surface cover plate 1 is sequentially provided with a square floor drain 3, and a circular floor drain filter 2 is snap-connected inside the square floor drain 3;

[0048] As a further aspect of the present invention, the circular floor drain filter screen 2 is composed of a filter screen frame 201, a side filter screen 202 and a bottom filter screen 203. The side filter screen 202 is inlaid on the side of the filter screen frame 201, and the bottom filter screen 203 is inlaid at the bottom end of the filter screen frame 201. By setting the detachable circular floor drain filter screen 2, it is more convenient to clean the dirt filtered inside;

[0049] A floor drain base funnel 4 is sleeved outside the square floor drain 3. The surface cover plate 1 is set as a rectangle, and the length and width dimensions of the rectangle are the same as the outer dimensions of the drainage groove 5 and the groove fixing plate 6. The surface cover plate 1 is composed of a cover plate body 101, filter holes 102 and water discharge holes 103. The cover plate body 101 is provided with filter holes 102 and water discharge holes 103, and the filter holes 102 are evenly arranged around the water discharge holes 103, set as a long-strip floor drain, increasing the drainage area and making the drainage efficiency higher;

[0050] After the drainage groove 5 and the groove fixing plate 6 are snap-connected, threaded holes 503 of the same size are provided in the corresponding vertical direction and locked by screws passing through, making the connection between the drainage groove 5 and the groove fixing plate 6 tighter, reducing the generation of gaps, so as to reduce the situation of water flowing out through the gaps;

[0051] The drainage groove 5 is inserted and connected to the lower side of the surface cover plate 1. The drainage groove 5 is composed of a diversion plate 501, a snap plate 502 and a threaded hole 503. The snap plates 502 are connected to both sides of the diversion plate 501, and the threaded holes 503 are symmetrically arranged on the snap plates 502 in the axial direction of the diversion plate 501. The snap plates 502 are snap-connected to the groove fixing plate 6. A circular groove with the same outer diameter size as the bottom end of the circular floor drain filter screen 2 is provided on one side of the drainage groove 5 and the groove fixing plate 6, and the circular groove is smaller than the outer edge of the upper port of the circular floor drain filter screen 2. After the drainage groove 5 and the groove fixing plate 6 are snap-connected to the square floor drain 3, the water on the drainage groove 5 can be injected into the circular floor drain filter screen 2 through the circular groove for filtration;

[0052] The groove fixing plate 6 is composed of a supporting plate 601 and a clamping groove 602. The clamping grooves 602 are axially arranged on both sides of the supporting plate 601, and the notches on the clamping grooves 602 are fitted with the protrusions on the clamping plate 502. The outer port after the clamping connection of the drainage groove 5 and the groove fixing plate 6 is fitted with the built-in groove of the drainage trough head 7. The drainage trough head 7 is composed of a sealing head 701, a side plate 702 and a screw hole 703. The inner grooves of the sealing head 701 are respectively fitted with the combined sizes of the drainage groove 5 and the groove fixing plate 6, and the side plate 702 is inlaid on the side of the sealing head 701. The lower end of the sealing head 701 is provided with a through screw hole 703. Two groups of screw holes are symmetrically arranged on the side of the groove fixing plate 6, and the same screw holes 703 are arranged at the corresponding positions on the drainage trough head 7. The two are fitted and locked by screws. After the groove fixing plate 6 is clamped and connected with the drainage groove 5, the drainage trough head 7 is sleeved on the outer side of its outer port for fixation, and then the screws are rotated for further locking to reduce the generation of gaps and make the sealing performance of the floor drain better;

[0053] The bottom end of the floor drain base funnel 4 is connected to the S-shaped water seal bend through a drain pipe, and a detachable inspection cover with a threaded connection is arranged at the bottom of the S-shaped water seal bend, which is convenient for maintenance while preventing odors.

[0054] The floor drain installation construction method involved in the present invention is as follows:

[0055] S1: Installation of the floor drain base funnel 4 of the floor drain base. First, place the positioning and setting-out device at the preset position for the floor drain base funnel 4, and temporarily fix it with wooden wedges in the reserved holes on each floor. The reserved holes are holes that match the outer diameter size of the floor drain base funnel 4, and formwork is carried out. After the formwork is completed, clean the sundries in the gaps, and pour the first layer of C20 fine aggregate concrete with one-third of the thickness of the reinforced concrete floor slab. On the second day, continue to pour C20 fine aggregate concrete to 5 mm from the plate surface to ensure compaction. On the third day, cure. Clamp and embed the floor drain base funnel 4 into the hole to complete the installation process of the floor drain base funnel 4. If there is no reserved hole, a special puncher can be used to open a hole with the corresponding size and repair it. The bottom end of the base funnel 4 is seamlessly connected to the external S-shaped water seal bend;

[0056] S2: Construction of the waterproof layer. After the floor drain base funnel 4 is clamped in the concrete layer hole, an L-shaped structure is formed with the concrete layer. Brush the second layer of waterproof coating layer 11 on the upper eaves of the floor drain base funnel 4 and extend it to the outside of the contact surface with the concrete. Extend and smear it on the inner wall of the floor drain base funnel 4 to one-third of the inner wall of the floor drain base funnel 4. The L-shaped waterproof layer is rolled and brushed together seamlessly. After storing for one day, roll and brush the first layer of polypropylene fiber waterproof material layer 10 twice at the same position to complete the construction of the waterproof layer;

[0057] S3: Assembly of the floor drain main body. Snap the drainage groove 5 to be installed and the groove fixing plate 6 together, and sleeve the drainage groove head 7 at the end position. Lock the three with screws, and snap the lower edge of the groove fixing plate 6 to the square floor drain 3 to complete the assembly of the floor drain main body;

[0058] S4: Installation of the floor drain main body. According to the elevation marked on the wall, make plaster cakes with 1:2 dry hard cement mortar, spread the mortar, and make a cement mortar leveling layer with a minimum thickness of 15 mm, sloping towards the floor drain. Finish it by pressing twice to make the cement mortar leveling layer 9. For the position of the upper edge hole of the floor drain base funnel 4, it should be about 10 mm higher than the surrounding ground, leaving a circular hole shape. Apply cement to the side of the floor drain main body and snap it into the formed circular hole;

[0059] S5: Installation of the tiles. According to the elevation reserved by the line marking in step 4, apply a mixture of cement and yellow sand to the bottom of the cut tiles, and attach the tiles to the cement mortar leveling layer 9 to form a tile layer 8. The height of the tile layer 8 is higher than the upper edge of the floor drain main body, and a gradually decreasing slope is set at a position 150 mm away from the floor drain main body;

[0060] S6: Completion of the floor drain installation. Cover the surface cover plate 1 in the top groove of the drainage groove 5 and lock it with screws. Seal the gaps on all four sides of the floor drain with glass glue or other adhesives.

[0061] The drainage process of the floor drain after installation is as follows:

[0062] The sewage is first initially filtered through the surface cover plate 1, and then flows into the lower drainage groove 5. Under the action of the diversion plate 501, the sewage is input into the circular floor drain filter screen 2 for secondary filtering. The water passing through the circular floor drain filter screen 2 is further filtered for the third and fourth times through the square floor drain 3 and the floor drain base funnel 4. The filtering effect is better, and it can drain the tile layer 8 and the cement mortar leveling layer 9 to prevent the situation that long-term water accumulation causes the expansion of the gaps between the tiles and the floor drain and damage.

[0063] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. An engineering floor drain with a water discharge groove, comprising a surface cover plate (1), a circular floor drain filter screen (2), a square floor drain (3), and a floor drain base funnel (4). The bottom end of the surface cover plate (1) is sequentially provided with a square floor drain (3), and a circular floor drain filter screen (2) is snap - connected inside the square floor drain (3). The outside of the square floor drain (3) is sleeved with a floor drain base funnel (4), and its characteristics are as follows: A drainage groove (5) is inserted and connected to the lower side of the surface cover plate (1). The drainage groove (5) is composed of a diversion plate (501), a snap - fit plate (502), and a threaded hole (503). The two sides of the diversion plate (501) are connected with snap - fit plates (502), and threaded holes (503) are symmetrically arranged on the snap - fit plates (502) in the axial direction of the diversion plate (501). The snap - fit plate (502) is snap - connected with a groove fixing plate (6); The groove fixing plate (6) is composed of a support plate (601) and a card slot (602). The card slots (602) are arranged axially on both sides of the support plate (601), and the notch on the card slot (602) fits with the convex block on the snap - fit plate (502). The outer port of the drainage groove (5) after being snap - connected with the groove fixing plate (6) fits with the built - in groove of the drainage groove head (7).

2. The engineering floor drain with a water outlet groove according to claim 1, wherein: The drainage groove head (7) is composed of a sealing head (701), a side plate (702), and a threaded hole (703). The inner groove of the sealing head (701) respectively fits with the combined size of the drainage groove (5) and the groove fixing plate (6), and a side plate (702) is inlaid on the side of the sealing head (701). A threaded hole (703) is penetrated and arranged at the lower end of the sealing head (701).

3. The engineering floor drain with a water trough according to claim 2, characterized in that: Two groups of threaded holes are symmetrically arranged on the side of the groove fixing plate (6), and the same threaded holes (703) are arranged at the corresponding positions on the drainage groove head (7). The two are fitted and locked by screws.

4. The engineering floor drain with a water sink according to claim 3, characterized in that: The surface cover plate (1) is set as a rectangle, and the length and width dimensions of the rectangle are the same as the outer dimensions of the drainage groove (5) and the groove fixing plate (6). The surface cover plate (1) is composed of a cover plate body (101), filter holes (102), and water discharge holes (103). Filter holes (102) and water discharge holes (103) are arranged on the cover plate body (101), and the filter holes (102) are evenly arranged around the water discharge holes (103).

5. The engineering floor drain with a water outlet groove according to claim 4, characterized in that: The circular floor drain filter screen (2) is composed of a filter screen frame (201), a side filter screen (202), and a bottom filter screen (203). The side filter screen (202) is inlaid on the side of the filter screen frame (201), and the bottom filter screen (203) is inlaid at the bottom end of the filter screen frame (201).

6. The engineering floor drain with a water trough according to claim 4, characterized in that: One side of the drainage groove (5) and the groove fixing plate (6) is provided with a circular groove with the same outer diameter size as the bottom end of the circular floor drain filter screen (2), and this circular groove is smaller than the outer edge of the upper port of the circular floor drain filter screen (2).

7. The engineering floor drain with a water outlet groove according to claim 1, characterized in that: After the drainage groove (5) and the groove fixing plate (6) are snap - connected, threaded holes (503) with the same size are arranged in the corresponding vertical direction and are locked by screws passing through.

8. The engineering floor drain with a water trough according to claim 1, characterized in that: The bottom end of the floor drain base funnel (4) is connected to an S-shaped water seal through a drain pipe, and a detachable inspection cover with a threaded connection is provided at the bottom of the S-shaped water seal.

9. The construction method of an engineering floor drain with a water trough according to any one of claims 1-8, characterized in that, The steps are as follows: S1: Installation of the floor drain base funnel (4) of the floor drain base. First, place the positioning and setting-out device for the floor drain base funnel (4) of the floor drain base according to the preset position, and temporarily fix it with wooden wedges in the reserved holes on each floor. The reserved hole is a hole that fits the outer diameter of the floor drain base funnel (4). Then, perform formwork suspension. After the formwork suspension is completed, clean the sundries in the gap, and first pour one-third of the thickness of the reinforced concrete floor slab with C20 fine aggregate concrete. The next day, continue to pour C20 fine aggregate concrete to 5 mm from the slab surface to ensure compaction by ramming. On the third day, perform curing. Then, snap-fit and embed the floor drain base funnel (4) into the hole to complete the installation process of the floor drain base funnel (4). If there is no reserved hole, use a special punch to drill a hole of the corresponding size and repair it, and seamlessly connect the bottom end of the floor drain base funnel (4) to the external S-shaped water seal. S2: Construction of the waterproof layer. After the floor drain base funnel (4) is snap-fitted into the hole in the concrete layer, an L-shaped structure is formed with the concrete layer. Brush the second waterproof coating layer (11) on the upper eaves of the floor drain base funnel (4) and extend it to the outside of the contact surface with the concrete. Extend and apply it on the inner wall of the floor drain base funnel (4) to one-third of the inner wall of the floor drain base funnel (4). The L-shaped waterproof layer is rolled and brushed seamlessly together. After storing for one day, roll and brush the first polypropylene fiber waterproof material layer (10) twice at the same position to complete the construction of the waterproof layer. S3: Assembly of the floor drain main body. Snap-fit and connect the drainage groove (5) to be installed with the groove fixing plate (6), and sleeve the drainage groove end cap (7) at the end position. Lock the three of them with screws, and snap-fit and connect the lower eaves of the groove fixing plate (6) to the square floor drain (3) to complete the assembly of the floor drain main body. S4: Installation of the floor drain main body. According to the elevation marked on the wall, make plastering cakes with 1:2 dry hard cement mortar, spread the mortar, and the thinnest part is a 15-mm-thick cement mortar leveling layer, sloping towards the floor drain. Finish the cement mortar leveling layer (9) by secondary troweling. For the hole position at the upper eaves of the floor drain base funnel (4), it should be 10 mm higher than the surrounding ground, and a circular hole shape is reserved. Apply cement to the side of the floor drain main body and snap-fit it to the formed circular hole. S5: Installation of tiles. According to the elevation reserved by the marking line in Step 4, apply a mixture of cement and yellow sand to the bottom of the cut tiles, and fit the tiles on the cement mortar leveling layer (9) to form a tile layer (8). The height of the tile layer (8) is higher than the upper eaves of the floor drain main body, and a gradually decreasing slope surface is provided at a position 150 mm away from the floor drain main body. S6: Completion of the floor drain installation. Cover the surface cover plate (1) in the top groove of the drainage groove (5) and lock it with screws. Seal the gaps on all four sides of the floor drain tightly with glass glue or other adhesives.

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