CN213572283U - Same-floor drainage and water collection device - Google Patents

Abstract

The utility model discloses a with layer drainage water-collecting device, including the open drainage water-collecting cylinder in top side and ending the overflow valve, it is inside that the drainage water-collecting cylinder is arranged in to end the overflow valve, and the inner wall of drainage water-collecting cylinder is provided with the step, and the outer wall and the step of ending the overflow valve are connected, and it accepts the chamber to form between the outer wall of overflow valve and the drainage water-collecting cylinder inner wall of step below, still is provided with into water branch pipe and drainage branch pipe on the lateral wall of drainage water-collecting cylinder, and the height of intaking branch pipe is higher than and ends overflow valve top, and drainage branch pipe highly be higher than end overflow valve bottom and drainage branch pipe and accept the chamber intercommunication. The same-floor drainage and water collection device in the utility model is not provided with a trap, so that the blocking points are reduced; the drainage performance is good, the later-stage maintenance is very convenient, and the same-layer maintenance can be realized; the installation and operation are simple and convenient, the leakage hidden danger of the toilet floor drain is ensured, the toilet floor drain can be used for same-layer drainage of toilets without lowering plates or lowering plates, caisson components are not needed, and a drainage system is optimized.

Description

Same-floor drainage and water collection device

Technical Field

The utility model belongs to the technical field of the building, specifically speaking, the utility model relates to a with layer drainage water-collecting device.

Background

The traditional same-floor toilet needs a caisson structure, drainage branch pipes of the toilet are connected inside the caisson, the branch pipes are long in joint, the caisson needs to be refilled after the branch pipes are connected, and the toilet is complex in construction and long in construction period. After finishing decoration, the drainage is not smooth or the building block is blocked and cannot be maintained. Most of the existing same-layer drainage concentrator are connected with a backflow three-way conjoined floor drain and a drainage vertical pipe, the existing same-layer drainage concentrator is of an integral structure, the installation and positioning requirements are high, the shape is complex, the water seal of the conjoined floor drain is shallow, the drainage cross section is small, and the conjoined floor drain in the same-layer drainage concentrator has no position adjusting function. Therefore, the problems that the requirement on the installation height of the floor drain is accurate, the adaptability and the universality are not ideal, the floor drain port is easy to cause the upward movement of sewer odor, the drainage capacity is small, and the floor drain is difficult to overhaul after being blocked can be solved in the actual use process.

In view of the above, it is desirable to develop a same-floor drainage and water collection device to simplify the complicated construction process of connecting a sewage pipe and backfilling a conventional toilet structure by using a drop plate as a caisson structure, optimize a drainage system, and facilitate maintenance.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the same-floor drainage and water collection device is provided, a drainage system is optimized, the maintenance is convenient, the problem that the existing toilet structure is lowered to make a caisson structure and the complicated construction process of backfilling after connecting a sewage pipe can be solved systematically.

In order to realize the purpose, the utility model discloses the technical scheme who takes does:

a same-floor drainage and water collection device comprises a grate cover plate, a drainage water collection cylinder with an opening on the top side and an overflow prevention valve, wherein the grate cover plate is connected with the top side of the drainage water collection cylinder, the inner wall of the drainage water collection cylinder is provided with a step, the overflow prevention valve is arranged in the drainage water collection cylinder, the outer wall of the overflow prevention valve is clamped on the step, an accommodating cavity is formed between the outer wall of the overflow prevention valve and the inner wall of the drainage water collection cylinder below the step, the height of a drainage branch pipe is higher than the bottom of the overflow prevention valve, the side wall of the drainage water collection cylinder is also provided with a water inlet branch pipe and a drainage branch pipe, and the height of the water inlet branch pipe is higher than the top of the overflow prevention valve. The same-floor drainage and water collection device in the scheme is installed in a floor slab of a toilet, and plate descending treatment is not needed. The water inlet branch pipe of the same-layer drainage and water collection device is connected with a sewage pipe of a toilet, the grate cover plate is flush with or slightly lower than the floor of the toilet, and sewage of the sewage pipe and sewage of the floor of the toilet flow into the drainage and water collection cylinder through the drainage branch pipe and the grate cover plate. The overflow-preventing valve is arranged, so that the sewage cannot overflow backwards after entering; and the height of the drainage branch pipe of the same-layer drainage and water collection device is higher than the bottom of the overflow-stopping valve, so that a U-shaped water seal is formed between the inside of the overflow-stopping valve and the accommodating cavity of the drainage and water collection cylinder, and the upward channeling of sewage and odor is avoided. When the drainage and water collection device on the same floor is blocked by dirt, the overflow-stopping valve can be cleaned or replaced after the grate cover plate is taken down, and the maintenance is very convenient.

In another preferred embodiment, the drainage water collecting barrel comprises a drainage joint and a barrel body, wherein the top side and the bottom side of the drainage joint are both open, at least one water inlet branch pipe is arranged on the side wall of the drainage joint, the top side and the bottom of the barrel body are open, the drainage branch pipe is arranged on the side wall of the barrel body, the drainage joint is connected with the top side of the barrel body, the step is arranged on the inner wall of the drainage joint, and the overflow-stopping valve is arranged in the barrel body.

In another preferred embodiment, the edge of the bottom side of the drainage connector extends inwards to form the step, the outer wall of the top side of the overflow-preventing valve extends outwards to form a fixing part, and the fixing part is overlapped or fixed on the step.

In another preferred embodiment, the bottom side shape of the drainage joint is matched with the top side shape of the cylinder body, the bottom side of the drainage joint is provided with an insertion sheet which vertically extends downwards, and the insertion sheet is attached to the inner wall of the cylinder body.

In another preferred embodiment, the overflow preventing valve comprises an outer cylinder and an inner core, the inner core is arranged in the outer cylinder, a supporting part is arranged on the inner wall of the outer cylinder, the top side of the inner core is lapped on the supporting part, and a fixing part connected with the drainage joint is arranged on the outer wall of the top side of the outer cylinder.

In another preferred embodiment, the outer cylinder is funnel-shaped, the top side and the bottom side of the outer cylinder are both open, the top side of the inner core is open, and the bottom side or the bottom side of the inner core is provided with an openable bottom cover.

In another preferred embodiment, the drainage water collecting tank further comprises a grate cover plate, and the grate cover plate is connected with the top side of the drainage water collecting tank.

In another preferred embodiment, an adjusting cover plate is arranged between the grate cover plate and the drainage joint, the adjusting cover plate comprises a plate body with a through hole and an annular side wall connected with the bottom side of the plate body, the outer diameter of the annular side wall is equal to the inner diameter of the top side of the drainage joint, the grate cover plate is arranged on the top side of the plate body, and the plate body is lapped with or clamped on the top side of the drainage joint.

In another preferred embodiment, the bottom of the drainage water collecting barrel is provided with supporting feet.

In another preferred embodiment, the outer surface of the drainage and water collection cylinder is provided with grid ribs. The grid ribs are arranged on the outer surface of the drainage water collecting barrel, and the supporting legs are arranged at the bottom of the drainage water collecting barrel, so that the anchoring force between the drainage water collecting barrel and concrete can be enhanced.

In another preferred embodiment, a sealing ring is arranged at the joint of the bottom side of the drainage joint and the top side of the barrel.

The technical scheme of the utility model the beneficial technological effect who gains is:

1. the utility model provides a with layer drainage water-collecting device installation easy and simple to handle, can ensure that bathroom floor drain does not have the seepage hidden danger, can be used for not falling the board or falling the bathroom of board with the layer drainage, application scope is wide, and the bathroom need not to carry out the structure and falls the board during the use, need not the caisson component, has simplified the work progress of bathroom, has optimized drainage system.

2. The same-floor drainage and water collection device in the utility model is not provided with a trap, so that the blocking points are reduced; the drainage performance is good, the later-stage maintenance is very convenient, and the same-layer maintenance can be realized; the requirement on the level of installation technical ability of workers is low, all pipe orifice connections are standard part connection sizes, a common water collector is connected, the using amount of the drainage branch pipes is reduced, an adjusting cover plate with adjustable height can be arranged, the grate cover plate and the adjusting cover plate can be used as an upper overhaul port and a floor drain, and the height of the grate cover plate and the adjusting cover plate can be adjusted according to secondary decoration in a height matching mode.

3. The size is moderate, the area of the opening of the pipe well is saved by utilizing the position arrangement of the pipe well, the position connected with the drainage vertical pipe is convenient for placing the reinforcing steel bars of the laminated floor slab, and the shearing and the damage of the structural reinforcing steel bars are reduced to the greatest extent; the same-layer drainage water collector module is applied, and the flexible arrangement of the toilet in the plane layout can be realized, so that the plane specification size and the arrangement of the toilet are more flexible.

4. The utility model provides a with layer drainage water-collecting device from taking the water seal, through the sewage that branch pipe or grate apron inflow of intaking all can get into the drainage water collecting barrel in, hydroenergy in the water seal in time supplements, and the probability of losing water of water seal is very little, can guarantee that the foul smell of sewer can not scurry.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation.

FIG. 1 is a schematic perspective view of a drainage and water collection apparatus for use in a single layer of an embodiment;

FIG. 2 is a side view of an embodiment of a same-floor drainage and collection unit;

FIG. 3 is a vertical cross-sectional view of another embodiment of a same-layer drainage and collection device;

FIG. 4 is a schematic diagram showing the parts of a drainage and water collection apparatus in the same layer in another embodiment, which are separated from each other (the grate cover plate is omitted);

FIG. 5 is a cross-sectional view of an adjusting cover plate of a drainage and water collection device of another implementation of the same layer;

FIG. 6 is a cross-sectional view of the outer housing of another embodiment of a same-layer drainage and collection device;

FIG. 7 is a vertical cross-sectional view of a drainage connector of another embodiment of a same-layer drainage collection device;

FIG. 8 is a vertical cross-sectional view of the cartridge of another embodiment of a same-layer drainage and collection device;

fig. 9 is a sectional view of an installation node of a same-floor drainage and water collection device installed in a floor of a toilet in another embodiment.

Reference numerals:

1-grate cover plate 2-drainage water collecting cylinder 3-overflow-preventing valve

4-water inlet branch pipe 5-drainage branch pipe 6-supporting part

7-drainage joint 8-cylinder 9-step

10-fixing part 11-inserting piece 12-outer cylinder

13-inner core 14-adjusting cover plate 15-plate body

16-annular side wall 17-supporting feet 18-grid rib

19-auxiliary supporting part 01-same-layer drainage and water collection device 02-floor slab

03-partition wall 04-drainage stand pipe

Detailed Description

The present invention will be described in detail with reference to the drawings, which are provided for illustrative and explanatory purposes only and should not be construed as limiting the scope of the present invention in any way. Furthermore, features from embodiments in this document and from different embodiments may be combined accordingly by a person skilled in the art from the description in this document.

Referring to fig. 1 and 2, the same layer drainage and water collection device 01 in one embodiment of the present invention includes a drainage water collection cylinder 2 with an open top, and an overflow valve 3, wherein the overflow valve 3 is disposed inside the drainage water collection cylinder 2, the inner wall of the drainage water collection cylinder 2 is provided with a step 9, the overflow valve 3 is disposed inside the drainage water collection cylinder 2 and the outer wall of the overflow valve 3 is connected with the step 9, and a housing cavity (not labeled in the figure) is formed between the outer wall of the overflow valve 3 and the inner wall of the drainage water collection cylinder 2 below the step 9. The side wall of the drainage and water collection cylinder 2 is also provided with a water inlet branch pipe 4 and a drainage branch pipe 5, the height of the water inlet branch pipe 4 is higher than the top of the overflow-stopping valve 3, the height of the drainage branch pipe 5 is higher than the bottom of the overflow-stopping valve 3, and the drainage branch pipe 5 is communicated with the accommodation cavity, namely, the height of the water inlet branch pipe 4 is higher than the height of the drainage branch pipe 5. Referring to fig. 9, the same-floor drainage and collection device 01 in the scheme is installed in a floor 02 of a toilet, connectors of a water inlet branch pipe 4 and a water outlet branch pipe 5 of the same-floor drainage and collection device 01 are designed to be of standard connection sizes, wherein the water inlet branch pipe 4 is communicated with a sewage pipe of the toilet, and the water outlet branch pipe 5 is communicated with a vertical drainage pipe 04. The same-layer drainage and water collection device 01 of the embodiment is provided with 3 water inlet branch pipes 4 with standard interfaces, which can be connected to sewage pipes in multiple directions and are finally communicated with the drainage stand pipe 04 through the drainage branch pipes 5. Because the connecting ports of the water inlet branch pipe 4 and the water outlet branch pipe 5 are both in the connecting size of standard parts, the convenience of installation is improved. The overflow-preventing valve 3 is arranged, so that sewage cannot overflow to the floor of the toilet after entering; the height of the branch drainage pipe 5 is higher than that of the bottom of the overflow-preventing valve 3, so that sewage enters the drainage water collecting cylinder 2 and then is stored to the bottom of the drainage water collecting cylinder 2, water in the accommodating cavity below the branch drainage pipe 5 forms a water seal, and odor is effectively prevented from flowing upwards.

Referring to fig. 1, in another modified embodiment, the outer surface of the drainage collection tank 2 is provided with grid ribs 18. Through setting up net muscle 18 the intensity that has improved drainage water catch bowl 2 self, drainage water catch bowl 2 material is different with the concrete material moreover, and 18 structures of net muscle are with concrete stress dispersion, reduce its and lightweight concrete joint face fracture and the production in gap, can more effectively bond with cast in situ concrete, reinforcing waterproof nature. In another embodiment, the bottom of the drainage water collecting cylinder 2 is provided with supporting feet 17, which facilitates the vertical placement of the drainage water collecting cylinder 2 on one hand, and can enhance the anchorage property with the concrete floor on the other hand.

Referring to fig. 3 and 4, in a same-layer drainage and water collection device 01 of another modified embodiment, a drainage and water collection cylinder 2 includes a drainage joint 7 and a cylinder 8, the top side and the bottom side of the drainage joint 7 are both open, at least one water inlet branch pipe 4 is arranged on the side wall of the drainage joint 7, the top side of the cylinder 8 is open, the bottom of the cylinder 8 is closed, a drainage branch pipe 5 is arranged on the side wall of the cylinder 8, the drainage joint 7 is connected with the top side of the cylinder 8, a step 9 is arranged on the inner wall of the drainage joint 7, an overflow-stopping valve 3 is arranged inside the cylinder 8, and a holding cavity is formed between the outer wall of the overflow-stopping valve. The drainage water collecting barrel 2 is provided with a drainage joint 7 and a barrel body 8, the barrel body 8 can be embedded at a designated position when concrete of a floor 02 of a toilet is poured, and the specific position of the drainage joint 7 is adjusted according to the actual height of a sewage pipe and the ground of the toilet when the toilet is decorated; the installation convenience can be improved, and the direction adjustment when the water inlet branch pipe 4 is connected with an external sewage pipe is convenient to install.

On the basis of the above embodiment, in another improved embodiment, the drainage and water collection device 01 on the same layer further comprises a grate cover plate 1 arranged on the top side of the drainage and water collection cylinder 2, the grate cover plate 1 is connected with the top side of the drainage and water collection cylinder 2, and specifically, the grate cover plate 1 is arranged on the top side of the drainage connector 7. During actual installation, the grate cover plate 1 is flush or slightly lower than the floor of a toilet, so that sewage on the floor of the toilet flows into the drainage water collecting barrel 2 through the grate cover plate 1, and large-size solid sewage is prevented from entering the drainage water collecting barrel 2. When the drainage and water collection device 01 on the same floor is blocked, the overflow-stopping valve 3 is cleaned or replaced after the grate cover plate 1 is taken down, and the maintenance is very convenient.

Referring to fig. 7, on the basis of the above embodiment, in another modified embodiment, the bottom edge of the drain connector 7 extends inwards to form a step 9, the top outer wall of the overflow stop valve 3 extends outwards to form a fixing part 10, and the fixing part 10 is overlapped or fixed on the step 9. Very convenient when installing like this, because the fixed part 10 of only overflow valve 3 mutually supports with the step 9 of drainage joint 7 bottom side, the branch pipe 4 that intakes on the drainage joint 7 is a little higher than or equal to only overflow valve 3's top side in addition, and the sewage that flows in from intake branch pipe 4 department will get into only in overflow valve 3 under the action of gravity like this, and only overflow valve 3 can prevent that sewage from flowing backward to drainage joint 7, has also prevented sewage from flowing backward in the bathroom.

Referring to fig. 7 and 8, on the basis of the above embodiment, in another modified embodiment, the shape of the bottom side of the drain connector 7 is matched with the shape of the top side of the cylinder 8, the bottom side of the drain connector 7 is provided with a vertically downward extending insert 11, and the insert 11 is attached to the inner wall of the cylinder 8. Because the bottom side inserting piece 11 of the drainage joint 7 is tightly attached to the top side of the barrel 8, a containing cavity is formed between the overflow-stopping valve 3 and the barrel 8. On one hand, the sewage entering from the water inlet branch pipe 4 of the drainage joint 7 is prevented from directly flowing into the cylinder 8, and the sewage is prevented from leaking into the floor 02 from the joint of the drainage joint 7 and the cylinder 8; on the other hand, the overflow-proof valve 3 and the containing cavity form a U-shaped water seal, which can effectively prevent odor from entering the toilet.

Referring to fig. 3 and 6, the overflow preventing valve 3 includes an outer cylinder 12 and an inner core 13, the inner core 13 is disposed inside the outer cylinder 12, the inner wall of the outer cylinder 12 is provided with a support portion 6, and the top side of the inner core 13 is overlapped on the support portion 6. In order to ensure the stability of the inner core 13 lapped on the outer cylinder 12, a circle of horizontal supporting part 6 is arranged at the bending part of the funnel-shaped outer cylinder 12, a circle of horizontal auxiliary supporting part 19 is arranged on the inner wall below the bending part, and the top outer wall of the inner core 13 is matched with the supporting part 6 and the auxiliary supporting part 19. Through setting up supporting part 6 and supplementary supporting part 19, can guarantee that inner core 13 more firm overlap joint is on outer section of thick bamboo 12, avoid when sewage flow is great, inner core 13's position is driven by rivers. Wherein, in a modified embodiment, the outer barrel 12 is funnel-shaped, the top side and the bottom side of the outer barrel 12 are both open, the top side of the inner core 13 is open, and the bottom side of the inner core 13 is open. In another improved embodiment, the height of the inner core 13 is less than that of the outer cylinder 12, and the top side of the inner core 13 is open and the bottom side is provided with an openable and closable bottom cover. The bottom cover is fixed on the bottom side of the inner core 13 through a pin with a spiral spring in the middle, and the bottom cover seals the bottom side of the inner core 13 in a natural state; when sewage flows down, the bottom cover is flushed by the sewage. Thus preventing the odor from rising and not influencing the sewage discharge.

Referring to fig. 3 and 5, on the basis of the above embodiment, in another modified embodiment, an adjusting cover plate 14 is arranged between the grate cover plate 1 and the drainage connector 7, the adjusting cover plate 14 comprises a plate body 15 with a through hole and an annular side wall 16 connected with the bottom side of the plate body 15, the annular side wall 16 is of a cylindrical structure with the outer diameter equal to the inner diameter of the top side of the drainage connector 7, the grate cover plate 1 is arranged on the top side of the plate body 15, and the plate body 15 is overlapped or clamped on the top side of the drainage connector 7. The adjusting cover plate 14 has the function of properly adjusting the height of the grate cover plate 1, the adjusting cover plates 14 with different heights can be arranged according to actual requirements, the problem of height difference higher than a trench after the floor tiles of the toilet are finished can be solved, the same floor can be easily overhauled, the drainage performance is increased, the grate cover plate 1 can also be used as a floor drain, the height of the grate cover plate 1 can be properly adjusted according to secondary decoration, and smooth drainage of the floor on the inner side of the toilet room is guaranteed.

On the basis of the above embodiment, in another improved embodiment, a sealing ring is further arranged between the grate cover plate 1 and the drainage water collecting cylinder 2. Thus avoiding the water seepage problem in the using process.

On the basis of the above embodiment, in another modified embodiment, a sealing ring is further arranged between the grate cover plate 1 and the adjusting cover plate 14.

On the basis of the above embodiment, in another modified embodiment, a sealing ring is arranged at the joint of the bottom side of the drain joint 7 and the top side of the cylinder 8. Thus avoiding the water seepage problem in the using process.

On the basis of the embodiment, in another improved embodiment, the bottom of the drainage water collecting barrel 2 is provided with a screw reserved hole which can be fixed with the floor slab 02 through screws, so that the drainage water collecting barrel is suitable for a toilet in which the floor slab pouring is finished, and drainage water collecting is not required to be pre-buried in the floor slab concrete in advance. Meanwhile, the interface of the water inlet branch pipe 4 can be respectively connected with a floor drain pipe in a dry and wet area of a toilet, sewage is collected into the drainage water collecting cylinder 2 and then communicated to the drainage vertical pipe 04 through the interface of the drainage branch pipe 5 with a water seal, and the joint of the drainage branch pipe 5 and the drainage vertical pipe 04 is fixedly connected through PVC glue, so that the water leakage phenomenon is avoided; when the multi-head water inlet branch pipe 4 is installed, the same-layer drainage water collecting device 01 is directly placed at the opening of the plate well, the fault tolerance is high, the multi-head water inlet branch pipe 4 can be connected with toilet drainage pipes in different directions, and the planar arrangement and specification and size of the toilet can be more flexible and variable.

Referring to fig. 4 and 9, the installation process of the same-floor drainage and water collection apparatus 01 in this embodiment will be briefly described:

firstly, referring to a vertical cross-sectional view of a toilet shown in fig. 9, the toilet includes a floor 02 and a partition wall 03, and a plate well opening is pre-opened on the floor 02 of the toilet.

1. For the barrel 8 to be placed at the plate well opening, the height of the barrel 8 is adjusted, and if so, a cushion block is placed below the barrel 8;

2. the branch drain pipe 5 on the cylinder 8 is butted with the vertical drain pipe 04 and is fixedly connected with the sealing ring through PVC glue;

3. inserting the drainage joint 7 above the barrel 8, adjusting the direction to enable the water inlet branch pipe 4 to be communicated with a drainage pipe in a toilet, and punching PVC glue at the joint of the drainage joint 7 and the barrel 8;

4. if the height difference between the grate cover plate 1 and the bottom surface of the toilet is large after the grate cover plate 1 is placed on the drainage connector 7, the adjusting cover plate 14 is placed on the drainage connector 7, and then the grate cover plate 1 is placed above the adjusting cover plate 14, so that the drainage holes in the grate cover plate 1 are opposite to the through holes in the adjusting cover plate 14.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. A same-floor drainage and water collection device is characterized by comprising a drainage water collection cylinder with an opening on the top side and an overflow prevention valve, wherein the overflow prevention valve is arranged inside the drainage water collection cylinder, the inner wall of the drainage water collection cylinder is provided with a step, the outer wall of the overflow prevention valve is connected with the step, an accommodating cavity is formed between the outer wall of the overflow prevention valve and the inner wall of the drainage water collection cylinder below the step, a water inlet branch pipe and a drainage branch pipe are further arranged on the side wall of the drainage water collection cylinder, the height of the water inlet branch pipe is higher than the top of the overflow prevention valve, the height of the drainage branch pipe is higher than the bottom of the overflow prevention valve, and the drainage branch pipe is communicated with the accommodating cavity.

2. The same-layer drainage and water collection device as in claim 1, wherein the drainage and water collection tank comprises a drainage joint and a tank body, the top side and the bottom side of the drainage joint are both open, the side wall of the drainage joint is provided with at least one water inlet branch pipe, the top side of the tank body is open, the bottom of the tank body is closed, the side wall of the tank body is provided with the drainage branch pipe, the drainage joint is connected with the top side of the tank body, the step is arranged on the inner wall of the drainage joint, and the overflow-stopping valve is arranged in the tank body.

3. The same-layer drainage water collecting device as the claim 2, wherein the edge of the bottom side of the drainage joint extends inwards to form the step, the outer wall of the top side of the overflow-stopping valve extends outwards to form a fixing part, and the fixing part is overlapped or fixed on the step.

4. The same-layer drainage water collecting device as claimed in claim 2, wherein the bottom side of the drainage joint is matched with the top side of the cylinder body in shape, and a vertically and downwardly extending inserting sheet is arranged at the bottom side of the drainage joint and is attached to the inner wall of the cylinder body.

5. The same-layer drainage and water collection device as in claim 3, wherein the overflow-preventing valve comprises an outer cylinder and an inner core, the inner core is arranged in the outer cylinder, the inner wall of the outer cylinder is provided with a supporting part, the top side of the inner core is lapped on the supporting part, and the outer wall of the top side of the outer cylinder is provided with the fixing part.

6. The same-floor drainage and water collection device as in claim 5, wherein the outer barrel is funnel-shaped, the top side and the bottom side of the outer barrel are both open, the top side of the inner core is open, and the bottom side or the bottom side of the inner core is open or provided with a bottom cover which can be opened and closed.

7. The same-floor drainage and water collection device as in any of claims 2-6, further comprising a grate cover plate connected to the top side of the drainage connector.

8. The same-layer drainage and water collection device as in claim 7, wherein an adjusting cover plate is arranged between the grate cover plate and the drainage joint, the adjusting cover plate comprises a plate body with a through hole and an annular side wall connected with the bottom side of the plate body, the outer diameter of the annular side wall is equal to the inner diameter of the top side of the drainage joint, the grate cover plate is arranged on the top side of the plate body, and the plate body is overlapped or clamped on the top side of the drainage joint.

9. The same-layer drainage and water collection device as in any one of claims 2-6, wherein a sealing ring is arranged at the joint of the bottom side of the drainage joint and the top side of the barrel.

10. The same-layer drainage and water collection device as in any one of claims 1 to 6, wherein the outer surface of the drainage and water collection cylinder is provided with grid ribs and/or the bottom of the drainage and water collection cylinder is provided with supporting legs.

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