CN213709740U - Downcomer subassembly - Google Patents

Abstract

The utility model discloses a sewer pipe component, which comprises a pipe body, a check valve and a sewer quick-connecting structure; the pipe body is provided with a water inlet end and a water outlet end, and a water seal structure is formed in the pipe body; the check valve is arranged in the pipe body and is configured to be opened under the action of water pressure when water enters from the water inlet end and closed under the action of gravity when water does not enter from the water inlet end; the launching quick connection structure comprises a sealing element and a screwed connection piece; the sealing element is arranged between the water inlet end and the sewer and is used for sealing a fit clearance between the water inlet end and the sewer; the screw fitting is in threaded fit with the water inlet end to press the sealing member against the sewer, so that the sealing member is tightly fitted with the sewer and prevents the pipe body from being separated from the sewer. The utility model discloses a downcomer subassembly can realize its and the quick installation of sewer, and has dual deodorant function, can effectively prevent that peculiar smell and foreign matter reverse entering bathroom.

Description

Downcomer subassembly

Technical Field

The utility model relates to a bathroom product field, concretely relates to downcomer subassembly.

Background

Sewer pipes are commonly used under the basin of a toilet to guide sewage from the basin sewer to a drain on the ground. The prior sewer pipe has the following defects: (1) the installation process of the sewer pipe and the washbasin sewer is complex, and quick installation cannot be realized due to the small space below the washbasin; (2) the sewer pipe generally only adopts a deodorization structure, and can not ensure better effects of odor prevention and insect prevention.

Thus, there remains a need for improvements in existing downcomers.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome at least a defect or problem that exists among the background art, provide a downcomer subassembly, can realize with the quick installation of sewer, and have dual deodorant function, can effectively prevent that peculiar smell and foreign matter are reverse to get into the bathroom.

In order to achieve the above purpose, the technical scheme of the utility model is that: a sewer pipe assembly for directing a flow of water from a sewer to a drain; it includes: a tube body having a water inlet end and a water outlet end; the water inlet end is suitable for being spliced and matched with the sewer and is communicated with the fluid, and the water outlet end is suitable for being communicated with the drainage channel in the fluid; a water seal structure is also formed in the tube body; the check valve is arranged in the pipe body and is configured to be opened under the action of water pressure when the water inlet end enters water so as to allow water to flow from the water inlet end to the water outlet end, and to be closed under the action of gravity when the water inlet end does not enter water so as to prevent the water from flowing from the water outlet end to the water inlet end; the launching quick-connection structure comprises a sealing element and a screwed connection element; the sealing element is arranged between the water inlet end and the sewer and is used for sealing a fit clearance between the water inlet end and the sewer; the screw fitting is in threaded fit with the water inlet end to press the sealing member against the sewer, so that the sealing member is tightly fitted with the sewer and prevents the pipe body from being separated from the sewer.

In one possible embodiment: the water inlet end of the pipe body is suitable for being sleeved on the outer wall of the sewer; the sealing element is an annular sealing sleeve and is arranged on the inner wall of the water inlet end of the pipe body, and the annular sealing sleeve is tightly pressed on the outer wall of the sewer and is in sealing fit with the outer wall when the water inlet end is sleeved outside the sewer.

In one possible embodiment: the screw connector is a screw cap with a through hole and is screwed on the outer wall of the water inlet end so as to tightly press the sealing element on the outer wall of the sewer after the screw connector and the water inlet end are locked; the through hole is used for inserting the sewer into the water inlet end of the pipe body.

In one possible embodiment: the upper end of the annular sealing sleeve is provided with an outward turning part which extends outwards along the radial direction of the annular sealing sleeve and is suitable for stopping at the end surface of the water inlet end of the pipe body through the outward turning part.

In one possible embodiment: a first descending section, a water storage section, an ascending section, a horizontal section and a second descending section are sequentially formed in the pipe body along the water flow direction; the first descending section, the water storage section and the ascending section form the water seal structure together; the water inlet end and the water outlet end are respectively positioned at the upper end of the first descending section and the lower end of the second descending section.

In one possible embodiment: the check valve is arranged at the horizontal section and comprises a valve body fixed relative to the pipe body and a turning plate which is rotationally connected with the valve body around a horizontal rotating shaft; the flap is configured to rotate upward under the action of water pressure when the rising section is overflowed to allow the horizontal section to overflowed and to rotate downward under the action of gravity when the rising section is not overflowed to prevent the horizontal section from overflowed.

In one possible embodiment: the pipe body comprises a first sub pipe, a second sub pipe and a third sub pipe which are fixedly connected with each other and are in fluid communication; the first sub-pipe is inserted into the second sub-pipe along the vertical part; the upper end of the first sub-pipe forms the water inlet end, and the first descending section is formed in the first sub-pipe; the second sub-pipe is provided with a horizontal water outlet part, the lower end of the first sub-pipe is lower than the horizontal water outlet part after the first sub-pipe is inserted, so that a water storage cavity which is positioned at the lower end of the first sub-pipe and forms the water storage section and the ascending section which is positioned between the first sub-pipe and the second sub-pipe are defined in the second sub-pipe; the third sub-pipe is in splicing fit with the second sub-pipe and clamps a valve body of the check valve between the third sub-pipe and the second sub-pipe; the third sub-pipe is provided with a horizontal water inlet part matched with the horizontal water outlet part, and the third sub-pipe and the horizontal water outlet part are connected to form the horizontal section; the third sub-pipe is internally provided with the second descending section, and the lower end of the second descending section forms the water outlet end.

In one possible embodiment: the first sub-pipe and the second sub-pipe, and the second sub-pipe and the third sub-pipe are fixedly connected with each other through elastic buckles after being mutually inserted.

In one possible embodiment: the second sub-pipe comprises a second sub-pipe body and a garbage box which is in threaded connection with the second sub-pipe body and is in sealing fit with the second sub-pipe body; the second sub-pipe body is used for accommodating part of the first sub-pipe and is provided with the horizontal water outlet part; the garbage box is configured to be positioned below the water storage cavity after the first sub-pipe is inserted.

In one possible embodiment: the water outlet end of the pipe body is suitable for being inserted into the drainage channel and is communicated with the drainage channel in a fluid mode; the sewer pipe component also comprises a deodorization rubber mat which is arranged between the water outlet end of the pipe body and the drainage channel and seals the matching gap between the water outlet end and the drainage channel.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) a water seal structure is formed in the pipe body, so that the reverse flow of peculiar smell can be effectively prevented; the physical deodorization and insect prevention effects are realized through the check valve closed under the action of gravity, and the double deodorization structure formed by matching the check valve with the water seal structure can effectively prevent peculiar smell and foreign matters from reversely entering a toilet, so that the effect is remarkable;

in addition, through going into water end spiro union and compressing tightly the sealing member in the sewer with the body and making the two closely cooperate, can effectively realize sealed and prevent that the two from breaking away from through the frictional force of sealing member, realized the quick installation of body and sewer.

(2) The water inlet end is sleeved on the outer wall of the sewer, and the sealing element and the screw connecting element are respectively configured into an annular sealing sleeve and a screw cap, so that the structure is simple, and the operation of a user is easy to realize.

(3) The annular seal cover is provided with an outward turning part and is suitable for being stopped at the end face of the water inlet end of the pipe body through the outward turning part, and the pre-positioning of the sealing piece relative to the pipe body can be realized before the pipe body and a sewer are installed, so that the installation is convenient.

(4) The check valve is arranged at the horizontal section and comprises a valve body and a turning plate, and the check valve is simple in structure and easy to assemble.

(5) The pipe body comprises a first sub pipe, a second sub pipe and a third sub pipe which are fixedly connected with each other, and the pipe body is of a split structure and easy to manufacture;

when the second sub-pipe is connected with the third sub-pipe, the valve body of the check valve is clamped between the second sub-pipe and the third sub-pipe, so that the check valve is convenient to assemble.

(6) The first sub-pipe and the second sub-pipe are fixedly connected with each other through the elastic buckles after the second sub-pipe and the third sub-pipe are mutually spliced, the assembly is quick, and the problem of water leakage caused by the fact that threads are not screwed down when a screw connection structure is adopted is avoided.

(7) The second sub-pipe comprises a second pipe body and a garbage box which is in threaded connection with the second pipe body and is in sealing fit with the second pipe body, can receive garbage in water flow in the water storage cavity, and is suitable for being detached and cleaned by a user when the sewer is blocked so as to solve the blocking problem.

(8) The downcomer subassembly still includes deodorant cushion, and it locates between the play water end and the drain way of body to prevent that the peculiar smell from bypassing the body and directly getting into the bathroom from the drain way, further improve deodorant effect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a front view of a downcomer assembly according to an embodiment of the present invention;

fig. 2 is an exploded view of a downcomer assembly according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of a check valve of a downcomer assembly according to an embodiment of the present invention when closed;

fig. 4 is a sectional view of the non-return valve of the downcomer assembly of the present invention when open.

Description of the main reference numerals:

the garbage can comprises a pipe body 10, a first sub-pipe 11, a second sub-pipe 12, a third sub-pipe 13, a first descending section 14, a water storage section (water storage cavity) 15, an ascending section 16, a horizontal section 17, a second descending section 18, a water inlet end 111, a first connecting table 112, a second sub-pipe main body 121, a garbage box 122, a vertical main pipe 1211, a transverse branch pipe 1212, a second connecting table 1213, a horizontal water outlet part 1214 and a third connecting table 1215; a water outlet end 131, a horizontal water inlet part 132 and a fourth connecting platform 133;

a check valve 20, a valve body 21, a flap 22;

a launching quick-connection structure 30, a sealing element (annular sealing sleeve) 31, a screw connector 32, an outward-turning part 311 and a through hole 321;

a deodorant cushion 40.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are preferred embodiments of the invention and should not be considered as excluding other embodiments. Based on the embodiment of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention.

In the claims, the specification and the drawings, unless otherwise expressly limited, the terms "first," "second," or "third," etc. are used for distinguishing between different elements and not for describing a particular sequence.

In the claims, the specification and the drawings, unless otherwise expressly limited, to the extent that directional terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise" and the like are used, the positional or orientational relationships illustrated in the drawings are based on the positional and orientational relationships illustrated in the drawings and are merely for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention in any way.

In the claims, the description and the drawings of the present application, unless otherwise expressly limited, the term "fixedly connected" or "fixedly connected" is used, which is to be understood broadly, that is, any connection mode without displacement relation or relative rotation relation between the two, that is, including non-detachably fixed connection, integrated connection and fixed connection through other devices or elements.

In the claims, the specification and the drawings, the terms "including", "comprising" and variations thereof, if used, are intended to be inclusive and not limiting.

The embodiment of the utility model provides a downcomer subassembly for guide rivers to water drainage (not shown in the figure) by sewer (not shown in the figure), and have multiple functions such as fast assembly, quick installation, dual deodorant, jam clearance concurrently. In this embodiment, the sewer is a basin sewer, and the drain is a drain on the ground in a house. Referring to fig. 1 to 4, the sewer pipe assembly includes a pipe body 10, a check valve 20, a sewer quick-connection structure 30 and a deodorizing cushion 40.

The body 10 has a water inlet end 111 and a water outlet end 131, the water inlet end 111 being adapted to be plug-fit and in fluid communication with the sewer, and the water outlet end 131 being adapted to be plug-fit and in fluid communication with the drain. Referring specifically to fig. 2, in order to make the pipe body 10 easy to manufacture, the pipe body 10 of the present embodiment is a split type configuration, which includes a first sub-pipe 11, a second sub-pipe 12, and a third sub-pipe 13 fixedly and fluidly connected to each other. It goes without saying that the joints of the sub-pipes are provided with corresponding sealing rings to prevent water leakage, which is a known technique in the art and therefore will not be described in detail below for the sealing structure inside the pipe body 10.

The first sub-pipe 11 is vertically arranged, the upper end of the first sub-pipe is provided with an external thread structure and forms the water inlet end 111, the middle of the first sub-pipe is provided with a first connecting table 112, and a plurality of elastic buckles are arranged below the first connecting table 112 at intervals along the circumferential direction of the first connecting table. In this embodiment, the water inlet end 111 is adapted to be sleeved on the outer wall of the sewer.

The second sub-pipe 12 comprises a second sub-pipe body 121 and a garbage box 122 which are screwed and matched with each other in a sealing way. The second sub-tube body 121 is configured to accommodate a part of the first sub-tube 11 and includes a vertical main tube 1211 and a horizontal branch tube 1212 which are integrally formed and communicate with each other. The middle part of the vertical main pipe 1211 is provided with a second connecting table 1213, and the second connecting table 1213 is provided with a plurality of clamping holes at intervals along the circumferential direction. The upper end of the vertical main tube 1211 is opened for the first sub-tube 11 to be inserted along the vertical portion, and the lower end thereof is further provided with an external thread configuration. After the first sub-pipe 11 is inserted, the first connecting platform 112 and the second connecting platform 1213 are mutually abutted and each elastic buckle is elastically clamped in the corresponding clamping hole, so that the first sub-pipe 11 and the second sub-pipe 12 are fixedly connected through elastic clamping. The lateral branch pipe 1212 is disposed on the peripheral wall of the vertical main pipe 1211 and extends in a substantially horizontal direction, and has a horizontal water outlet portion 1214 formed therein to horizontally lead out the water flow of the second sub-pipe 12, and the lower end of the first sub-pipe 11 is lower than the horizontal water outlet portion 1214 after the first sub-pipe 11 is inserted. The end of the lateral branch 1212 remote from the main vertical pipe 1211 forms a third connecting table 1215, and the third connecting table 1215 is also provided with a plurality of fastening holes circumferentially spaced therefrom. The trash can 122 has an internal thread structure screwed to the lower end of the vertical main pipe 1211 so as to receive trash in the water flow passing through the vertical main pipe 1211 and is adapted to be removed and cleaned by a user when the sewage is blocked to solve the blocking problem.

The middle portion of the third sub-pipe 13 is configured as a telescopic pipe, the upper portion thereof extends in the horizontal direction and a horizontal water inlet portion 132 is formed inside. A fourth connecting platform 133 is formed at the upper part of the third sub-pipe 13, and a plurality of elastic buckles are arranged at intervals along the circumferential direction of the fourth connecting platform 133. The third sub-tube 13 is inserted into the lateral branch 1212 of the second sub-tube 12 along the horizontal direction, so that the horizontal water outlet portion 1214 and the horizontal water inlet portion 132 are matched and communicated with each other, the third connecting platform 1215 and the fourth connecting platform 133 are abutted against each other, and each elastic buckle is elastically clamped in the corresponding clamping hole, so that the second sub-tube 12 and the third sub-tube 13 are fixedly connected through elastic clamping. Furthermore, the lower end of the third sub-pipe 13 constitutes the water outlet end 131, and in this embodiment, the water outlet end 131 is adapted to be inserted into the drainage channel and is in fluid communication therewith.

So far, first sub-pipe 11, second sub-pipe 12 and third sub-pipe 13 are through elasticity buckle joint cooperation fast each other in order to constitute body 10 has realized the fast assembly of body 10, and has avoided not screwing up the problem that the screw thread caused water leakage when adopting spiro union connection structure. In addition, after the first sub-pipe 11, the second sub-pipe 12 and the third sub-pipe 13 are connected to form the pipe body 10, a first descending section 14, a water storage section 15, an ascending section 16, a horizontal section 17 and a second descending section 18 are sequentially formed inside the pipe body 10 along the water flow direction. The first descending section 14 is formed inside the first sub-pipe 11, the horizontal section 17 is formed by the horizontal outlet portion 1214 and the horizontal inlet portion 132 after the second sub-pipe 12 and the third sub-pipe 13 are connected, and the second descending section 18 is formed inside the third sub-pipe 13. Regarding the water storage section 15 and the ascending section 16, since the lower end of the first sub-tube 11 is lower than the horizontal water outlet portion 1214 after the first sub-tube 11 is inserted, a water storage cavity 15 located at the lower end of the first sub-tube 11 and constituting the water storage section 15 and the ascending section 16 located between the first sub-tube 11 and the second sub-tube 12 are defined in the second sub-tube 12. Furthermore, it will be understood that the water inlet end 111 and the water outlet end 131 are located at the upper end of the first drop section 14 and the lower end of the second drop section 18, respectively. In addition, the first descending section 14, the water storage section 15 and the ascending section 16 form a water seal structure in the pipe body 10, and the water seal structure can effectively prevent odor from reversely flowing into the sewer from the drainage channel. Further, the garbage box 122 is configured to be located below the water storage cavity 15 after the first sub-pipe 11 is inserted.

The check valve 20 is disposed in the tube 10 and is configured to be opened by water pressure when the water inlet end 111 is filled with water to allow water to flow from the water inlet end 111 to the water outlet end 131, and closed by gravity when the water inlet end 111 is not filled with water to prevent water from flowing from the water outlet end 131 to the water inlet end 111. In a specific structure, the check valve 20 is disposed on the horizontal section 17, and includes a valve body 21 fixed relative to the pipe body 10 and a flap 22 rotatably connected to the valve body 21 around a horizontal rotation axis. The valve body 21 is clamped between the lateral branch 1212 of the second sub-pipe 12 and the third sub-pipe 13 when they are connected, so as to fix the valve body 21 relative to the pipe body 10 and facilitate the assembly of the non-return valve 20. The flap 22 is configured to rotate upwardly under water pressure to allow the horizontal section 17 to be flushed when the riser 16 is flushed and downwardly under gravity to prevent the horizontal section 17 from being flushed when the riser 16 is not flushed, as shown in fig. 3-4. In this embodiment, the check valve 20 closed under the action of gravity realizes the physical deodorization and insect prevention effects, and the double deodorization structural design formed by matching the check valve with the water seal structure can effectively prevent peculiar smell and foreign matters from reversely entering the toilet, and the effect is remarkable. In addition, the non-return valve 20 is arranged on the horizontal section 17 and comprises a valve body 21 and a turnover plate 22, so that the structure is simple and the assembly is easy.

The launching quick-connect structure 30 comprises a sealing member 31 and a screw connector 32. The sealing member 31 is disposed between the water inlet end 111 and the sewage and serves to seal a fitting gap between the water inlet end 111 and the sewage. The screw 32 is screw-engaged with the water inlet end 111 of the pipe body 10 to press the sealing member 31 against the drain, so that the sealing member 31 is tightly engaged with the drain to achieve a good sealing effect and to effectively prevent the pipe body 10 from being separated from the drain by the friction of the sealing member 31. In the concrete structure, the sealing element 31 is an annular sealing sleeve 31 and is arranged on the inner wall of the water inlet end 111 of the pipe body 10, and the annular sealing sleeve 31 is pressed on the outer wall of the sewer and is in sealing fit with the outer wall when the water inlet end 111 is sleeved outside the sewer. The screw connector 32 is a nut having a through hole 321, and is screwed to the outer wall of the water inlet end 111 to press the sealing member 31 against the outer wall of the sewer after the two are locked, and the through hole 321 is used for inserting the sewer into the water inlet end 111 of the pipe body 10. Preferably, the upper end of the annular sealing sleeve 31 has an outward turned part 311 extending radially outwards along the upper end, and is adapted to stop at the end surface of the water inlet end 111 of the pipe body 10 through the outward turned part 311, so that the sealing member 31 can be pre-positioned relative to the pipe body 10 before the pipe body 10 is installed with a sewer, and the installation is convenient.

The deodorizing rubber pad 40 is arranged between the water outlet end 131 of the pipe body 10 and the water drainage channel, and seals the matching gap between the water outlet end 131 and the water drainage channel to prevent the odor from bypassing the pipe body 10 and directly entering the toilet from the water drainage channel, thereby further improving the deodorizing effect.

The installation process of the sewer pipe assembly of the present embodiment with the sewer pipe is described as follows:

(1) the annular sealing sleeve 31 is placed at the water inlet end 111 of the pipe body 10 and is positioned inside the pipe body 10;

(2) sleeving the screw connector 32 on the water inlet end 111 of the pipe body 10 and appropriately screwing the screw connector to finish the pre-installation of the sewer pipe assembly;

(3) the pre-installed pipe body 10 is close to a sewer, so that the water inlet end 111 and the annular sealing sleeve 31 are sleeved on the outer wall of the sewer;

(4) the screw connecting piece 32 is screwed, so that the water inlet end 111 of the pipe body 10 is slightly retracted under the action of the screw connecting piece 32 and the annular sealing sleeve 31 is pressed on the outer wall of the sewer, and meanwhile, the sealing and connecting effects of the annular sealing sleeve 31 are realized, and the sewer is prevented from being separated from the pipe body 10.

The description of the above specification and examples is intended to illustrate the scope of the invention, but should not be construed as limiting the scope of the invention. Modifications, equivalents and other improvements which may be made to the embodiments of the invention or to some of the technical features thereof by a person of ordinary skill in the art through logical analysis, reasoning or limited experimentation in light of the above teachings of the invention or the above embodiments are intended to be included within the scope of the invention.

Claims (10)

1. A sewer pipe assembly for directing a flow of water from a sewer to a drain; it is characterized by comprising:

a tube body having a water inlet end and a water outlet end; the water inlet end is suitable for being spliced and matched with the sewer and is communicated with the fluid, and the water outlet end is suitable for being communicated with the drainage channel in the fluid; a water seal structure is also formed in the tube body;

the check valve is arranged in the pipe body and is configured to be opened under the action of water pressure when the water inlet end enters water so as to allow water to flow from the water inlet end to the water outlet end, and to be closed under the action of gravity when the water inlet end does not enter water so as to prevent the water from flowing from the water outlet end to the water inlet end;

the launching quick-connection structure comprises a sealing element and a screwed connection element; the sealing element is arranged between the water inlet end and the sewer and is used for sealing a fit clearance between the water inlet end and the sewer; the screw fitting is in threaded fit with the water inlet end to press the sealing member against the sewer, so that the sealing member is tightly fitted with the sewer and prevents the pipe body from being separated from the sewer.

2. The downcomer assembly of claim 1 wherein: the water inlet end of the pipe body is suitable for being sleeved on the outer wall of the sewer;

the sealing element is an annular sealing sleeve and is arranged on the inner wall of the water inlet end of the pipe body, and the annular sealing sleeve is tightly pressed on the outer wall of the sewer and is in sealing fit with the outer wall when the water inlet end is sleeved outside the sewer.

3. The downcomer assembly of claim 2 wherein: the screw connector is a screw cap with a through hole and is screwed on the outer wall of the water inlet end so as to tightly press the sealing element on the outer wall of the sewer after the screw connector and the water inlet end are locked;

the through hole is used for inserting the sewer into the water inlet end of the pipe body.

4. A downcomer assembly as claimed in claim 3, wherein: the upper end of the annular sealing sleeve is provided with an outward turning part which extends outwards along the radial direction of the annular sealing sleeve and is suitable for stopping at the end surface of the water inlet end of the pipe body through the outward turning part.

5. The downcomer assembly of claim 1 wherein: a first descending section, a water storage section, an ascending section, a horizontal section and a second descending section are sequentially formed in the pipe body along the water flow direction;

the first descending section, the water storage section and the ascending section form the water seal structure together;

the water inlet end and the water outlet end are respectively positioned at the upper end of the first descending section and the lower end of the second descending section.

6. A downcomer assembly as claimed in claim 5, wherein: the check valve is arranged at the horizontal section and comprises a valve body fixed relative to the pipe body and a turning plate which is rotationally connected with the valve body around a horizontal rotating shaft;

the flap is configured to rotate upward under the action of water pressure when the rising section is overflowed to allow the horizontal section to overflowed and to rotate downward under the action of gravity when the rising section is not overflowed to prevent the horizontal section from overflowed.

7. The downcomer assembly of claim 6 wherein: the pipe body comprises a first sub pipe, a second sub pipe and a third sub pipe which are fixedly connected with each other and are in fluid communication;

the first sub-pipe is inserted into the second sub-pipe along the vertical part; the upper end of the first sub-pipe forms the water inlet end, and the first descending section is formed in the first sub-pipe;

the second sub-pipe is provided with a horizontal water outlet part, the lower end of the first sub-pipe is lower than the horizontal water outlet part after the first sub-pipe is inserted, so that a water storage cavity which is positioned at the lower end of the first sub-pipe and forms the water storage section and the ascending section which is positioned between the first sub-pipe and the second sub-pipe are defined in the second sub-pipe;

the third sub-pipe is in splicing fit with the second sub-pipe and clamps a valve body of the check valve between the third sub-pipe and the second sub-pipe; the third sub-pipe is provided with a horizontal water inlet part matched with the horizontal water outlet part, and the third sub-pipe and the horizontal water outlet part are connected to form the horizontal section; the third sub-pipe is internally provided with the second descending section, and the lower end of the second descending section forms the water outlet end.

8. A downcomer assembly as claimed in claim 7, wherein: the first sub-pipe and the second sub-pipe, and the second sub-pipe and the third sub-pipe are fixedly connected with each other through elastic buckles after being mutually inserted.

9. A downcomer assembly as claimed in claim 7, wherein: the second sub-pipe comprises a second sub-pipe body and a garbage box which is in threaded connection with the second sub-pipe body and is in sealing fit with the second sub-pipe body;

the second sub-pipe body is used for accommodating part of the first sub-pipe and is provided with the horizontal water outlet part;

the garbage box is configured to be positioned below the water storage cavity after the first sub-pipe is inserted.

10. The downcomer assembly of claim 1 wherein: the water outlet end of the pipe body is suitable for being inserted into the drainage channel and is communicated with the drainage channel in a fluid mode;

the sewer pipe component also comprises a deodorization rubber mat which is arranged between the water outlet end of the pipe body and the drainage channel and seals the matching gap between the water outlet end and the drainage channel.

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