CN117231782A - Reverse blocking core and reverse blocking device - Google Patents

Abstract

The utility model relates to the technical field of kitchens and bathrooms, in particular to a reverse blocking core and a reverse blocking device, wherein a reverse blocking core main body and a reverse blocking cover are provided with a water outlet and a water outlet, the reverse blocking cover is hinged with the main body, the main body is provided with a reverse blocking part, and the reverse blocking cover downwards abuts against the reverse blocking part under the action of gravity so as to cut off the air-water communication between the water outlet and the water outlet. The reverse blocking device comprises the reverse blocking core which is arranged in the drainage joint, and the drainage outlet is communicated with the sewage pipe. The utility model prevents the reverse flow of air and water through the abutting and matching between the reverse blocking cover and the reverse blocking part, and the larger the air and water pressure at the water outlet, the tighter the reverse blocking cover is pressed downwards, the stronger the reverse blocking effect, and the reverse blocking effect of the reverse blocking cover can be weakened by avoiding the impact of the air and water with larger pressure. The reverse blocking core is combined with the drainage connector and is suitable for drainage in various directions, so that the reverse blocking core can be used for drainage of kitchens and toilets, and particularly comprises sink drainage, ground drainage, urinal drainage, urination and the like.

Description

Reverse blocking core and reverse blocking device

Technical Field

The utility model relates to the technical field of kitchens and bathrooms, in particular to a reverse blocking core and a reverse blocking device.

Background

The drain of kitchen and bathroom is installed the deodorant valve generally, specifically includes ground drainage, pond drainage, urinal drainage urination's deodorant, and what is widely believed to be better on the market at present is "submarine" floor drain, and the apron for deodorant is the bottom that sets up at deodorant core, and when soft rectangular shape rubbish especially hair, when flowing through the floor drain, because a plurality of spare parts such as floor drain upper end still have panel, soft rubbish such as hair can be blocked in the floor drain upper end, because the hair is longer, its lower extreme then probably just blocks in the opening part of deodorant core lower extreme, influences the apron closure to influence deodorant effect.

The utility model patent CN204491811U proposes a double deodorization drain core, which comprises a U-shaped water storage pipe (corresponding to an alternative airtight and pathogen invasion prevention 'deodorization core'), wherein a drain outlet is formed in the side wall of the upper part of the water storage pipe, a sealing cover (corresponding to the 'cover plate') is also arranged in the water storage pipe, the upper end of the water storage pipe is provided with a water inlet, and when the water level in the water storage pipe is lower than the drain outlet, the sealing cover closes the drain outlet to prevent odor in a sewer from overflowing; when the water level in the water storage pipe rises to jack up the sealing cover, the water outlet is opened to drain water. Because the water outlet is arranged at the upper end of the water storage pipe, the sealing cover is opened by rising the water level, so that the fine and soft strip-shaped garbage such as hair can be left at the bottom of the water storage pipe before being flushed out of the water outlet, and the descending of the sealing cover is not easy to be influenced. In the next step, even if the hair is clamped between the sealing cover and the water storage pipe, the odor can be prevented from overflowing due to the water seal arranged at the bottom of the water storage pipe, and the double deodorization effect is achieved.

However, the sealing cover and the water storage pipe are in sliding fit, so that a larger gap exists between the sealing cover and the water storage pipe, when other water using equipment (such as a hand washing pool) is used for draining water rapidly, the pressure in the sewer pipe can be rapidly increased due to the fact that the sewer pipe is communicated, the sewer pipe enters the water outlet of the sewer core through the sewer pipe, and after the impact to the sealing cover, the sealing cover overflows through the gap between the sealing cover and the water storage pipe, so that the deodorizing effect is influenced, and the sewer core is possibly damaged.

In addition, the ground of the bathroom is generally waterproof, but the ceramic tile is arranged above the waterproof layer, the filling material between the ceramic tile and the waterproof layer is waterproof, so that water can leak downwards to the position of the filling material, but a sewer pipe extends upwards to the ground where the ceramic tile is arranged, and accumulated water at the position of the filling material cannot be discharged.

Disclosure of Invention

The utility model aims to provide a reverse blocking core and a reverse blocking device, which are used for solving the problem that the existing deodorizing reverse blocking device cannot effectively resist the impact of a sewer pipeline.

In order to achieve the above purpose, the technical scheme of the utility model is as follows: the utility model provides a hinder contrary core, includes main part and hinders contrary lid, and the drain has been seted up on the top of main part, and the outlet has been seted up to the side of main part, forms the water storage chamber between outlet and the main part bottom, hinders contrary lid and main part and forms articulated the connection, and the main part is equipped with and hinders contrary portion, hinders contrary lid under the action of gravity, thereby downward support is leaned on and is hindered contrary portion to cut off the intercommunication between drain and the outlet.

Further, the reverse blocking part is annular, and the reverse blocking cover is arranged above the reverse blocking part and is in contact with the upper end surface of the reverse blocking part to cut off the communication between the water outlet and the water outlet.

Further, the main body is provided with a downward extending partition wall, and the partition wall is arranged between the water falling opening and the water outlet, and the lower end of the partition wall is lower than the water outlet, so that a U-shaped or V-shaped water discharging channel is formed in the inner cavity of the main body.

Further, the reverse blocking cover is hinged with the partition wall, one side surface of the partition wall faces the water outlet, the side surface facing the water outlet protrudes outwards to form a first reverse blocking part, the top end of the side wall of the water storage cavity forms a second reverse blocking part, and the first reverse blocking part and the second reverse blocking part are connected to form an annular reverse blocking part.

The reverse blocking device comprises the reverse blocking core, wherein the reverse blocking core is arranged in a drainage joint, the upper end of a main body is provided with a mounting part encircling a water falling port, the mounting part is matched with the inner wall of the drainage joint to fix the main body in the drainage joint, a water outlet is arranged above the water falling port, and the water outlet is communicated with a sewage pipe.

Further, the drain port comprises a first drain port arranged at the top of the drain joint and a second drain port arranged at the side surface of the drain joint.

Further, a third water outlet is further formed in the side face of the drainage joint, the third water outlet is arranged below the same-direction reverse blocking device, the third water outlet is connected to a water seepage flow guiding assembly, and the water seepage flow guiding assembly is used for guiding accumulated water between the floor tile and the waterproof layer to a sewage pipe;

the water seepage flow guiding component is provided with a reverse blocking valve so as to prevent air and water in the sewage pipe and the drainage joint from flowing back between the floor tile and the waterproof layer.

Further, the reverse blocking valve comprises a body and a cover plate, wherein the lower end of the body is provided with a water inlet, the upper end of the body is provided with a water outlet, the water inlet is arranged above a ground waterproof layer and is in clearance with the waterproof layer, the water outlet is communicated with a third water outlet, the cover plate is arranged in the body and is hinged with the body, an annular flange is arranged on the inner side of the body, and the cover plate is matched with the annular flange to prevent air and water from flowing back to the water inlet from the water outlet.

Further, a grid plate is arranged at the water inlet of the reverse blocking valve, and the outer peripheral wall of the grid plate is connected with the inner wall of the body, so that the filler between the floor brick and the waterproof layer is prevented from being discharged to the sewage pipe through the reverse blocking valve.

Further, infiltration water conservancy diversion subassembly includes the water conservancy diversion spare, and the top of water conservancy diversion spare is sealed, and the bottom is opened and is used for intaking, and the bottom lateral wall of water conservancy diversion spare is equipped with the water conservancy diversion passageway, hinders the contrary valve setting in the water conservancy diversion spare, and hinder contrary water inlet and the water conservancy diversion passageway intercommunication of valve.

The utility model has the beneficial effects that:

1. the utility model prevents the air and water at the water outlet from flowing back to the water outlet through the abutting and matching between the reverse blocking cover and the reverse blocking part, and the reverse blocking cover is abutted downwards by gravity, so that the greater the air and water pressure at the water outlet is, the tighter the reverse blocking cover is pressed downwards, namely the tighter the matching between the reverse blocking cover and the reverse blocking part is, the stronger the reverse blocking effect is, the air and water impact with higher pressure can be avoided to weaken the reverse blocking effect of the reverse blocking cover, and the invasion of living organisms can be prevented.

2. The reverse blocking cover is arranged above the reverse blocking part, so that the air and water from top to bottom can be prevented, and the position of the water falling opening is higher than the water outlet, so that the normal water discharging direction is also from top to bottom, namely the reverse blocking and normal water discharging are in the same direction, and the reverse blocking type water discharging device can be suitable for various water discharging scenes.

3. The same-direction reverse-blocking core is combined with the drainage joint and is suitable for drainage in various directions, the first drainage port is suitable for drainage below, and the second drainage port is suitable for side drainage, so that the water tank drainage device can be used for water tank drainage (including drainage and side drainage) and ground drainage.

4. The drainage joint is matched with the water seepage flow guide assembly, accumulated water which cannot be discharged originally between the floor brick and the waterproof layer can be discharged, and the flow guide piece is internally provided with the reverse blocking valve, so that the air and water in the drainage joint and the sewage pipe are prevented from flowing back between the waterproof layer and the floor brick, and good water seepage flow guide and reverse blocking effects are achieved.

Drawings

Fig. 1 is a perspective view of a reverse blocking core of the present utility model.

Fig. 2 is a perspective view of the main body of the reverse blocking core of the present utility model.

Fig. 3 is a perspective view of the reverse blocking cover of the reverse blocking core of the present utility model.

Fig. 4 is a cross-sectional view of the present utility model's reverse blocking core.

Fig. 5 is a cross-sectional view of a check core according to another embodiment of the present utility model.

Fig. 6 is a cross-sectional view of a check core according to another embodiment of the present utility model.

Fig. 7 is a cross-sectional view of a check core according to another embodiment of the present utility model.

Fig. 8 is a perspective view of one embodiment of the reverse blocking device of the present utility model.

Fig. 9 is a perspective view of another embodiment of the reverse blocking device of the present utility model.

Fig. 10 is a perspective view of the ground water seepage guide flow reversing device of the present utility model.

Fig. 11 is a cross-sectional view of the check valve of the present utility model.

Fig. 12 is a perspective view of the check valve of the present utility model.

Fig. 13 is a perspective view of a baffle of the present utility model.

Fig. 14 is a schematic view of the present utility model's reverse blocking core for urinal reverse blocking.

Wherein: 1 a reverse blocking core, 11 a main body, 111 a water outlet, 112 a water outlet, 113 a water storage cavity, 114 a reverse blocking part, 1141 a first reverse blocking part, 1142 a second reverse blocking part, 115 a partition wall, 116 lugs, 1161 grooves, 117 a mounting part, 118 a protruding part, 12 a reverse blocking cover, 121 a protruding shaft, 2 a water outlet connector, 21 a first water outlet, 22 a second water outlet, 23 a third water outlet, 3 a reverse blocking valve, 31 a main body, 311 a water inlet, 312 a water outlet, 313 an annular flange, 32 a cover plate, 33 a grid plate, 4 a diversion member, 41 a diversion channel, 100 a sewer pipe, 200 a floor tile, 300 a waterproof layer and 400 a urinal.

Detailed Description

For further illustration of the various embodiments, the utility model is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present utility model. The components in the figures are not drawn to scale and like reference numerals are generally used to designate like components.

Referring to fig. 1-4, the utility model discloses a reverse blocking core and a reverse blocking device, wherein the reverse blocking core 1 is a same-direction reverse blocking device capable of resisting air-water impact and living organisms, the reverse blocking core 1 comprises a main body 11 and a reverse blocking cover 12, a water falling port 111 is formed at the top end of the main body 11, a water discharging port 112 is formed at the side surface of the main body 11, a water storage cavity 113 is formed between the water discharging port 112 and the bottom of the main body 11, and when the water storage cavity 113 is full of water, the air communication between the water falling port 111 and the water discharging port 112 is disconnected, so that a deodorizing water seal is formed. The reverse blocking cover 12 is hinged with the main body 11, the main body 11 is provided with a reverse blocking part 114, and the reverse blocking cover 12 is propped against the reverse blocking part 114 downwards under the action of gravity so as to cut off the air-water communication between the water outlet 111 and the water outlet 112, and can also prevent living organisms from invading into the water outlet 111 from the water outlet 112. When the reverse blocking cover 12 is abutted against the reverse blocking portion 114, the reverse blocking cover 12 has a tendency to move toward the reverse blocking portion 114 due to the direction of the air-water impact when the air-water impact from the sewage pipe is received, that is, the greater the force of the air-water impact, the tighter the fit between the reverse blocking cover 12 and the reverse blocking portion 114, and the better the reverse blocking effect, so that the reverse blocking core 1 has an impact-resistant function.

The main body 11 is provided with a partition wall 115 extending downward, and the partition wall 115 is disposed between the water falling port 111 and the water discharging port 112, and the lower end of the partition wall 115 is lower than the water discharging port 112, so that the inner cavity of the main body forms a U-shaped water discharging passage. In this example, a sidewall of the main body 11 extends downward and inward to form the partition wall 115, and the direction in which the partition wall 115 extends may be inclined or may be a right angle shape having corners. In other embodiments, the partition wall may be formed to protrude inward and inward from the inner side wall of the main body 11, i.e., the side wall of the main body 11 is extended downward from the external appearance, and the partition wall is disposed inside the main body. In addition, the drainage channel can also be V-shaped, namely the bottom end is directly bent, so that a water storage cavity can be formed.

Referring to fig. 2 to 4, a side surface of the partition wall 115 facing the drain port 112 protrudes outward to form two opposite lugs 116, the lugs 116 are provided with grooves 1161, and both sides of the reverse blocking cover 12 are provided with protruding shafts 121, and the protruding shafts 121 are engaged with the grooves 1161 to form a hinge connection, so that the reverse blocking cover 12 and the partition wall 115 form a hinge connection. In other embodiments, it is also possible to provide a recess in the reverse blocking cover 12 and a protruding shaft in the partition wall 115 to form a hinged connection of the reverse blocking cover 12 to the partition wall 115.

The reverse blocking portion 114 is annular, and the reverse blocking cover 12 is disposed above the reverse blocking portion 114, and the reverse blocking cover 12 abuts against the upper end surface of the reverse blocking portion 114 to cut off the air-water communication between the water drain 111 and the water drain 112. The annular reverse blocking portion 114 cooperates with the reverse blocking cover 12 to form an annular seal around the drain passage, and the reverse blocking cover 12 can cut off the air-water communication between the drain opening 111 and the drain opening 112. Referring to fig. 4-6, the water passes through the water outlet 111 to the water outlet 112 from the water outlet 111 downward and then upward, and in the upward process, the reverse blocking cover 12 is pushed open, when no water is discharged, the reverse blocking cover 12 is pressed above the reverse blocking portion 114 under the action of gravity, so that the reverse blocking cover 12 can be prevented from flowing back down from above the reverse blocking cover 12, and under the impact of the air and the water, the reverse blocking cover 12 is further pressed above the reverse blocking portion 114. The direction of the reverse blocking cover 12 can be inclined upwards (fig. 6) or inclined downwards (fig. 4 and 5), when the reverse blocking cover 12 is inclined upwards, the water outlet 112 is higher than the rotating shaft of the reverse blocking cover 12, and at the moment, the partition wall only needs to be downwards extended to be enough for installing the reverse blocking cover 12, and the lower end of the partition wall 115 can meet the requirement of the first water outlet 112; when the reverse blocking cap 12 is inclined downward, the partition wall 115 should extend downward below the drain port 112 on a sufficient basis to mount the reverse blocking cap 12. As described with reference to fig. 7, when the reverse blocking cover 12 is inclined upward, the reverse flow air and water from the sewer may impact the gap between the reverse blocking cover 12 and the lower edge of the drain outlet 112, so that the reverse blocking cover 12 is opened to cause reverse blocking failure, and in order to avoid reverse blocking failure, the drain outlet 112 is provided with a protrusion 118 to prevent the air and water from impacting the gap between the reverse blocking cover 12 and the drain outlet 112.

The reverse blocking cover 12 can block the reverse flow of air and water from top to bottom, and the direction of normal water discharge (from the water outlet to the water outlet) is also from top to bottom, so the reverse blocking core 1 can block the reverse flow in the same direction, and realize the reverse blocking in the same direction. In the existing reverse blocking devices or reverse blocking valves and other devices with air-water reverse blocking functions, reverse flow in opposite directions can only be prevented, for example, normal water drainage is from left to right, reverse blocking direction can only block water flow from right to left, or normal water drainage is from top to bottom, reverse blocking direction can only block water flow from bottom to top (which is also common reverse blocking direction in toilet floor or pool drainage).

Referring to fig. 2-3, in this embodiment, a side of the partition wall 115 facing the drain 112 protrudes outwards to form a first reverse blocking portion 1141, a top end of a side wall of the water storage cavity forms a second reverse blocking portion 1142, and the first reverse blocking portion 1141 and the second reverse blocking portion 1142 are connected to form an annular reverse blocking portion 114. The side wall of the body is fully utilized, the structure of the body is simplified, the wall thickness of the body is more uniform, and the manufacturing difficulty and cost are reduced. In order to cooperate with the reverse blocking portion 114, the lower surface of the reverse blocking cover 12 is provided with an arc-shaped step, so that the lower end surface of the reverse blocking cover 12 and the upper end surface of the reverse blocking portion 114 form a reliable seal. Referring to fig. 5, in other embodiments, flanges may be disposed on the partition wall 115 and the side wall of the water storage cavity, so as to form a continuous annular reverse blocking portion 114, and accordingly, the reverse blocking cover 12 is provided with a continuous structure to cooperate with the reverse blocking portion 114, and the design difficulty of the mating surface can be reduced because the mating surface of the two is continuous and uninterrupted, so that the sealing between the reverse blocking portion 114 and the reverse blocking cover 12 is more reliable.

In order to further improve the sealing performance of the reverse blocking cover 12 and the reverse blocking portion 114, a seal ring may be provided between the reverse blocking cover 12 and the reverse blocking portion 114.

In this example, the second reverse blocking portion 1142 is disposed at the top end of the water storage cavity, and in other embodiments, the second reverse blocking portion 1142 may be disposed in the middle or even at the bottom of the water storage cavity, where a portion of the reverse blocking cover 12 is immersed in the water storage cavity.

The reverse blocking core 1 can be used for blocking a pool, comprising a pool with lower drainage and a pool with side drainage, and can also be used for blocking a floor drainage, comprising a space with floor drainage such as a bathroom floor or a balcony floor, and the like, and the reverse blocking core 1 and drainage parts are combined to form a reverse blocking device with a reverse guiding function on ground seepage, and can also be used for blocking urination of urinal drainage.

Referring to fig. 2 and 8, the reverse blocking device comprises the reverse blocking core 1, the reverse blocking core 1 is disposed in the drain joint 2, the drain joint 2 is provided with a drain port, the drain port is located higher than the drain port 111 of the reverse blocking core 1, and the drain port 112 is communicated with the sewage pipe 100, so that sewage is discharged to the sewage pipe 100 through the reverse blocking core 1, and air and water in the sewage pipe 100 are prevented from flowing back to the drain port through the reverse blocking core 1. The sewer pipe 100 of the present utility model is a pipeline pre-buried in a building, which is also called a sewer pipe. The water outlet can be arranged on the ground or connected with a water tank.

The upper end of the main body 11 is provided with a mounting part 117 encircling the water falling opening 111, and the mounting part 117 is matched with the inner wall of the water discharging joint 2 to fix the main body 11 in the water discharging joint 2, thereby realizing the mounting of the reverse blocking core 1. Specifically, the outer side wall of the mounting portion 117 is provided with an external thread, and the inner wall of the drain fitting 2 is provided with an internal thread, so that the mounting portion 117 and the drain fitting 2 form a screw-fit. The upper surface of the mounting portion 117 is provided with four protrusions extending in the radial direction of the mounting portion 117, by which the reverse blocking core 1 is operated to effect mounting of the reverse blocking core 1. In other embodiments, the mounting portion 117 and the drain fitting 2 may also be connected by a snap fit.

Referring to fig. 8 to 9, the drain port may be disposed at the top of the drain connector 2 or may be disposed at a side of the drain connector 2 according to a usage scenario of the reverse blocking device. Specifically, when there is only one drain port, and the first drain port 21 is provided at the top of the drain joint, the reverse blocking core 1 is used for a lower drain scene, such as a lower drain pool or a washing machine, and may be ground drain (fig. 8); when the drain port includes a first drain port 21 provided at the top of the drain joint 2 and a second drain port 22 provided at the side of the drain joint 2, and both the first drain port 21 and the second drain port 22 are provided at a position higher than the drain port 111, the reverse blocking core 1 can prevent the reverse flow of air and water to the first drain port 21 and the second drain port 22, and the second drain port 22 is generally used for side drainage (fig. 9).

Referring to fig. 10, for the floor of a bathroom or other water-consuming scene, a waterproof layer is generally provided, and in order to avoid long-time water accumulation between the waterproof layer 300 and the floor tile 200, water seepage between the waterproof layer and the floor tile should be timely guided to the sewage pipe 100. The side surface of the drainage joint 2 is also provided with a third water outlet 23, the third water outlet 23 is arranged below the reverse blocking core 1, the third water outlet 23 is connected with a water seepage flow guide component, and the water seepage flow guide component is used for guiding accumulated water between the floor tile 200 and the waterproof layer 300 to the sewage pipe 100. Since the third water drain 23 is disposed below the reverse blocking core 1, the reverse blocking core 1 cannot prevent the reverse flow of air and water through the water seepage guide assembly to the region between the waterproof layer 300 and the floor tile 200. A reverse blocking valve 3 is provided at the water seepage guide assembly to prevent the air and water in the sewage pipe 100 and the drain joint 2 from flowing backward to the area between the floor tile 200 and the waterproof layer 300. For easy installation and production, the waterproof joint 2 is formed by splicing a plurality of pipe fittings.

Referring to fig. 10 to 12, the reverse blocking valve 3 includes a body 31 and a cover plate 32, a water inlet 311 is provided at a lower end of the body 31, a water outlet 312 is provided at an upper end of the body 31, the water inlet 311 is provided above the ground waterproof layer 300 and a gap is provided between the water inlet 311 and the waterproof layer 300, so that water seepage on the waterproof layer 300 enters the water inlet 311 from the gap, the water outlet 312 is communicated with the third water outlet 23, the cover plate 32 is provided in the body 31 and forms hinged connection with the body 31, an annular flange 313 is provided at an inner side of the body 31, and the cover plate 32 cooperates with the annular flange 313 to prevent air and water from flowing back from the water outlet 312 to the water inlet 311. When the water penetration height of the waterproof layer 300 is greater than the height of the cover plate 32 in the natural state, the water flow pushes up the cover plate 32, so that the water flows through the water outlet 312 and the third water outlet 23 to be discharged to the sewage pipe 100. In a natural state, the cover plate 32 is pressed downwardly against the upper end face of the annular flange by gravity. And the lower end of the cover plate 32 is higher than or equal to the lower edge of the third water outlet 23, so that when the cover plate 32 is jacked up, water can flow out of the third water outlet 23 completely.

Since the filler between the floor tile 200 and the waterproof layer 300 is granular and has a certain fluidity under the action of water flow, in order to prevent the filler between the floor tile 200 and the waterproof layer 300 from being discharged to the water inlet 311 of the sewage pipe reverse blocking valve 3 through the reverse blocking valve, a grid plate 33 is provided, and the outer peripheral wall of the grid plate 33 is connected with the inner wall of the body 31.

Referring to fig. 13, the water seepage guide assembly includes a guide member 4, the top of the guide member 4 is closed, the bottom is opened for water inflow, a guide channel 41 is provided on the bottom side wall of the guide member, a reverse blocking valve 3 is provided in the guide member 4, and a water inlet 311 of the reverse blocking valve 3 is communicated with the guide channel 41. The diversion channel 41 is formed by the saw teeth arranged at the bottom of the diversion piece, the tips of the saw teeth are abutted against the surface of the waterproof layer 300, and the saw-tooth diversion channel 41 can also prevent the filler between the floor tile 200 and the waterproof layer 300 from entering the water inlet 311 of the inverse blocking valve 3. The top end of the guide piece 4 is closed, water is introduced into the lower end, and besides the cover plate 32 of the reverse blocking valve 3 can be pushed open by upward water flow, water formed by water seepage can be prevented from being suddenly discharged, and filler between the floor brick 200 and the waterproof layer 300 can be taken away.

Referring to fig. 14, the reverse blocking core of the present utility model is installed in the urinal for reverse blocking of the urinal for draining and urinating, and the reverse blocking core is disposed below the urinal 400, and the reverse blocking principle is the same as that of the previous embodiment, and will not be repeated here.

While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that the remaining non-illustrated portions are prior art and that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (10)

1. The utility model provides a hinder contrary core, its characterized in that, includes main part and hinders contrary lid, and the drain has been seted up on the top of main part, and the outlet has been seted up to the side of main part, forms the water storage chamber between outlet and the main part bottom, hinders contrary lid and main part to form articulated the connection, and the main part is equipped with and hinders contrary portion, hinders contrary lid under the action of gravity, thereby downward support lean on hinder contrary portion and cut off the intercommunication between drain and the outlet.

2. The reverse blocking core according to claim 1, wherein the reverse blocking portion is annular, and the reverse blocking cover is disposed above the reverse blocking portion, and the reverse blocking cover abuts against the upper end surface of the reverse blocking portion to cut off communication between the water outlet and the water outlet.

3. A reverse blocking core according to claim 1, wherein the main body is provided with a downwardly extending partition wall, and the partition wall is disposed between the water outlet and the water outlet, the lower end of the partition wall being lower than the water outlet, whereby the main body cavity forms a U-shaped or V-shaped drain channel.

4. A check core according to claim 3, wherein the check cover is hinged to the partition wall, one side of the partition wall faces the drain opening, the side facing the drain opening protrudes outwards to form a first check part, the top end of the side wall of the water storage cavity forms a second check part, and the first check part and the second check part are connected to form an annular check part.

5. The reverse blocking device comprises the reverse blocking core according to any one of claims 1-4, wherein the reverse blocking core is arranged in a drainage joint, the upper end of a main body is provided with a mounting part encircling a water falling port, the mounting part is matched with the inner wall of the drainage joint to fix the main body in the drainage joint, a water discharging port is arranged above the water falling port, and the water discharging port is communicated with a sewage pipe.

6. The reverse blocking device according to claim 5, wherein the drain port comprises a first drain port provided at a top of the drain joint and a second drain port provided at a side of the drain joint.

7. The reverse blocking device according to claim 5, wherein a third water outlet is further arranged on the side surface of the drainage joint, the third water outlet is arranged below the same-direction reverse blocking device, the third water outlet is connected to a water seepage flow guiding component, and the water seepage flow guiding component is used for guiding accumulated water between the floor tile and the waterproof layer to the sewage pipe;

the water seepage flow guiding component is provided with a reverse blocking valve so as to prevent air and water in the sewage pipe and the drainage joint from flowing back between the floor tile and the waterproof layer.

8. The reverse blocking device according to claim 7, wherein the reverse blocking valve comprises a body and a cover plate, the lower end of the body is provided with a water inlet, the upper end of the body is provided with a water outlet, the water inlet is arranged above a ground waterproof layer and is in clearance with the waterproof layer, the water outlet is communicated with a third water outlet, the cover plate is arranged in the body and is in hinged connection with the body, an annular flange is arranged on the inner side of the body, and the cover plate is matched with the annular flange to prevent air and water from flowing back from the water outlet to the water inlet.

9. A reverse blocking device according to claim 8, wherein a mesh plate is provided at the water inlet of the reverse blocking valve, and the outer peripheral wall of the mesh plate is connected to the inner wall of the body, thereby preventing the filler between the floor tile and the waterproof layer from being discharged to the sewage pipe through the reverse blocking valve.

10. The reverse blocking device according to claim 8, wherein the water seepage guide assembly comprises a guide member, the top of the guide member is closed, the bottom of the guide member is open for water inflow, a guide channel is arranged on the side wall of the bottom end of the guide member, the reverse blocking valve is arranged in the guide member, and the water inlet of the reverse blocking valve is communicated with the guide channel.