A sewer pipe

Abstract

The utility model provides a kind of sewer, belong to kitchen and bathroom supplies technical field.It solves the problem of the structure of existing sewer is not reasonable compact etc..The sewer of the utility model includes the water storage pipe of straight cylinder, the lower end of water storage pipe is detachably connected with sealing cover, water storage pipe has the water retaining portion of straight cylinder from its upper end and axially extends downwards in, water retaining portion and sealing cover have water gap between, water retaining portion and water storage pipe inner wall are water storage cavity, the side of water storage pipe close to its upper end is fixedly connected with the connecting pipe connected to water storage cavity, the inner wall and outer wall of connecting pipe are embedded with sealing ring, connecting pipe is inserted or sleeved with drain pipe, the upper end of water storage pipe is axially inserted with the water receiving pipe that extends into water retaining portion, the outer end of water receiving pipe is connection end, the upper end of water storage pipe is connected with lock cap by outer thread, sealing ring is sealed in the outer wall of water receiving pipe between lock cap and the upper end of water storage pipe.The utility model has the advantages of reasonable structure compact, good adaptability etc..

Description

Technical Field

[0001] This utility model belongs to the field of kitchen and bathroom products technology, and specifically relates to a drain pipe. Background Technology

[0002] A drain pipe is a pipe installed under a sink or basin for draining water. It generally includes a drain pipe that connects to the drain outlet of the sink or basin, and a water reservoir on the drain pipe to prevent odors.

[0003] For example, Chinese patent literature discloses a rotating drainage assembly [Application No.: 201520410551.5; Authorization Announcement No.: CN204781157U], which includes a drain pipe connected to the drain outlet of a sink or basin, the other end of the drain pipe connected to the first port of a T-shaped pipe, the second port of the T-shaped pipe located below being rotatably connected to the first port of the T-shaped trap located above, the third port of the T-shaped pipe located above being sealed, the T-shaped trap being a T-shaped bend, the second port of the T-shaped trap located below being detachably connected to the end cap of the T-shaped trap, and the third port of the T-shaped trap located on the side being connected to a drain pipe.

[0004] The aforementioned rotating drainage assembly features a tee that can be rotated as needed, facilitating the adjustment of the position of the trap and drain pipe, and offering good adaptability to installation space. However, the drain pipe is connected to the side of the tee, which does not make good use of the third port of the tee, resulting in an unreasonable structural layout. Furthermore, the drain pipe needs to be machined with a flange and connected to the trap via a locking ring and thread, making the connection inconvenient. While it is compatible with American standard drain pipes, it is not compatible with larger European standard drain pipes. Summary of the Invention

[0005] The purpose of this utility model is to address the aforementioned problems in the existing technology by providing a drain pipe with a reasonable and compact structure and good adaptability.

[0006] The purpose of this utility model can be achieved through the following technical solution: A drain pipe includes a cylindrical water storage pipe, the lower end of which is detachably connected to a sealing cap. The water storage pipe has a cylindrical water-blocking portion extending axially downwards from its upper end. A water-passing gap exists between the water-blocking portion and the sealing cap. A water-storing cavity exists between the water-blocking portion and the inner wall of the water storage pipe. The water storage pipe is characterized by a connecting pipe fixed to its upper side, which communicates with the water-storing cavity. Sealing rings are embedded in both the inner and outer walls of the connecting pipe. A drain pipe is inserted into or sleeved onto the connecting pipe. A water receiving pipe extending into the water-blocking portion is axially inserted into the upper end of the water storage pipe. The outer end of the water receiving pipe is a connecting end. A locking cap is connected to the upper end of the water storage pipe via an external thread. A sealing ring sealing the outer wall of the water receiving pipe is provided between the locking cap and the upper end of the water storage pipe.

[0007] In one of the aforementioned drain pipes, the outer end of the water inlet pipe has a flange, the water inlet pipe is fitted with a locking nut, and the locking nut contains a ring-shaped washer that abuts against the flange.

[0008] In one of the aforementioned drain pipes, the water storage pipe is covered by an outer shell, the upper end of which is folded inward and covers the locking cap. The water receiving pipe extends out of the outer shell, and the lower end of the water receiving pipe is flush with the bottom of the water storage pipe. The outer shell has a clearance hole for the connecting pipe to extend out.

[0009] In the aforementioned drain pipe, the bottom inner wall of the water storage pipe has a radially convex connecting ring, the inner wall of the connecting ring has an internal thread, the sealing cap has an external thread that connects with the internal thread, the outer wall of the sealing cap has a step, an O-ring is provided between the step and the connecting ring, and the bottom surface of the sealing cap has two symmetrical semi-circular grooves so that there is a crossbeam in the middle of the bottom of the sealing cap.

[0010] In one of the aforementioned drain pipes, a decorative cap is fixedly connected to the outer wall of the end of the drain pipe away from the connecting pipe.

[0011] In the aforementioned drain pipe, the inner wall of the connecting pipe is fitted with two sealing rings, and the outer wall of the connecting pipe is fitted with three sealing rings.

[0012] In one of the aforementioned drain pipes, when the drain pipe is inserted into the connecting pipe, the outer wall of the connecting pipe is fitted with a stainless steel sleeve to cover it.

[0013] Compared with existing technologies, this drain pipe has a reasonable and compact structure, is easy to install, and has good adaptability and sealing performance. Attached Figure Description

[0014] Figure 1 This is a 3D structural diagram of the drain pipe.

[0015] Figure 2 This is a three-dimensional structural diagram of the drain pipe from another angle.

[0016] Figure 3 This is a cross-sectional view of the structure of this drain pipe.

[0017] In the diagram, 1. Water storage pipe; 1a. Water blocking part; 1b. Water storage cavity; 2. Sealing cover; 2a. Crossbeam; 3. Connecting pipe; 4. Sealing ring; 5. Drain pipe; 6. Water receiving pipe; 6a. Flanged edge; 7. Locking cap; 8. Sealing ring; 9. Locking nut; 10. Washer; 11. Outer shell; 12. Connecting ring; 13. O-ring; 14. Decorative cover; 15. Stainless steel sleeve. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] like Figure 1 , Figure 2 and Figure 3 As shown, this drain pipe includes a cylindrical water storage pipe 1, with a sealing cap 2 detachably connected to the lower end of the water storage pipe 1. The water storage pipe 1 has a cylindrical water-blocking part 1a extending axially downward from its upper end. There is a water passage gap between the water-blocking part 1a and the sealing cap 2. The water storage cavity 1b is located between the water-blocking part 1a and the inner wall of the water storage pipe 1. A connecting pipe 3 connected to the water storage cavity 1b is fixed to the side of the water storage pipe 1 near its upper end. Sealing rings 4 are embedded in both the inner and outer walls of the connecting pipe 3. A drain pipe 5 is inserted into or sleeved onto the connecting pipe 3. A water receiving pipe 6 extending into the water-blocking part 1a is axially inserted into the upper end of the water storage pipe 1. The outer end of the water receiving pipe 6 is the connecting end. A locking cap 7 is connected to the upper end of the water storage pipe 1 through an external thread. A sealing ring 8 is provided between the locking cap 7 and the upper end of the water storage pipe 1, sealing the outer wall of the water receiving pipe 6.

[0020] Based on the usage environment, drain pipe 5 is selected. If drain pipe 5 is of American standard, it is inserted into connecting pipe 3. If drain pipe 5 is of European standard, it is sleeved on the outside of connecting pipe 3. This ensures good compatibility. Sealing ring 4 ensures the seal between connecting pipe 3 and drain pipe 5. Water inlet pipe 6 is directly inserted into the upper end of water storage pipe 1. The structure is reasonable and compact. Water inlet pipe 6 can rotate around its axis, which is convenient for installation and layout. Moreover, water inlet pipe 6 can be axially raised and lowered according to the position of the water outlet of the sink or basin. After the connecting end of water inlet pipe 6 is connected to the water outlet of the sink or basin, tighten the locking cap 7 so that the sealing ring 8 locks and seals the outer wall of water inlet pipe 6, making the connection convenient.

[0021] When this drain pipe is in use, the water discharged from the sink or basin enters the water storage pipe 1 through the water inlet pipe 6, then passes through the water storage chamber 1b, and is discharged from the drain pipe 5. After the drainage is completed, because the height of the inner end of the connecting pipe 3 is higher than the bottom of the water-blocking part 1a, water will be stored in the water storage chamber 1b and the water-blocking part 1a to form a water seal and prevent the backflow of odors; the sealing cover 2 can be detached for easy sewage discharge.

[0022] The outer end of the water inlet pipe 6 has a flange 6a. A locking nut 9 is fitted onto the water inlet pipe 6, and a ring-shaped washer 10 is located inside the locking nut 9, abutting against the flange 6a. The upper end of the water inlet pipe 6 abuts against the water outlet of the sink or basin. Then, the locking nut 9 is rotated, and the locking nut 9 connects to the water outlet of the sink or basin via its internal thread. After the locking nut 9 is tightened, the washer 10 seals between the flange 6a and the water outlet of the sink or basin. This connection is convenient and provides a good seal. In actual manufacturing, the water inlet pipe 6 is made of stainless steel.

[0023] The water storage pipe 1 is covered by an outer shell 11. The upper end of the outer shell 11 is folded inward and covers the locking cap 7. The water inlet pipe 6 extends out of the outer shell 11, and the lower end of the water inlet pipe 6 is flush with the bottom of the water storage pipe 1. The outer shell 11 has a clearance hole for the connecting pipe 3 to extend out. The outer shell 11 protects the water storage pipe 1. During manufacturing, the water storage pipe 1 is made of plastic, and the outer shell 11 is made of stainless steel, which results in an aesthetically pleasing appearance and low manufacturing cost.

[0024] The water pipe 1 has a radially convex connecting ring 12 on its inner bottom wall. The inner wall of the connecting ring 12 has internal threads. The sealing cap 2 has external threads that connect with the internal threads. The outer wall of the sealing cap 2 has a step. An O-ring 13 is provided between the step and the connecting ring 12. The bottom surface of the sealing cap 2 has two symmetrical semi-circular grooves so that there is a crossbeam 2a in the middle of the bottom of the sealing cap 2. The crossbeam 2a is easy to grip and allows the user to manually rotate the sealing cap 2 without tools. The sealing cap 2 is easy to install and remove. The O-ring 13 ensures the sealing performance between the sealing cap 2 and the connecting ring 12. In actual manufacturing, the water pipe 1 and the connecting ring 12 are both plastic parts and are welded together. The sealing cap 2 is also a plastic part. When the sealing cap 2 is threadedly connected to the connecting ring 12, the bottom surface of the sealing cap 2 is flush with or recessed into the bottom of the water pipe 1. This makes the sealing cap 2 less obtrusive and aesthetically pleasing.

[0025] A decorative cover 14 is fixed to the outer wall of the end of the drain pipe 5 away from the connecting pipe 3. The decorative cover 14 protects the connection of the drain pipe 5 and also makes it look beautiful. In actual manufacturing, both the drain pipe 5 and the decorative cover 14 are stainless steel parts. The inner wall of the decorative cover 14 is folded and welded to the outer wall of the drain pipe 5.

[0026] Two sealing rings 4 are embedded in the inner wall of the connecting pipe 3, and three sealing rings 4 are embedded in the outer wall of the connecting pipe 3. The spacing of each sealing ring 4 is determined according to the actual situation. In this embodiment, two sealing rings 4 are embedded in the inner wall of the section from the middle to the outer end of the connecting pipe 3, and three sealing rings 5 ​​are embedded in the outer wall from the middle to the inner end of the connecting pipe 3. This forms a multiple seal, ensuring the sealing performance. Moreover, the drain pipe 5 can be axially displaced relative to the connecting pipe 3 to compensate for the installation position, making installation convenient. In actual manufacturing, the connecting pipe 3 is a plastic part. The inner end of the connecting pipe 3 abuts against the outer wall of the water storage pipe 1. The inner end of the connecting pipe 3 has a plug-in part for inserting into the water storage pipe 1. The inner end of the connecting pipe 3 is welded to the water storage pipe 1, resulting in good structural strength.

[0027] In this embodiment, when the drain pipe 5 is inserted into the connecting pipe 3, a stainless steel sleeve 15 is fitted over the outer wall of the connecting pipe 3 to cover it. This makes the appearance more aesthetically pleasing, and the stainless steel sleeve 15 protects the sealing ring 4 on the outer wall of the connecting pipe 3. When it is necessary to adapt to a European standard drain pipe 5, the American standard drain pipe 5 and the stainless steel sleeve 15 are removed, and the European standard drain pipe 5 is fitted over the outside of the connecting pipe 3.

[0028] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A drain pipe, comprising a cylindrical water storage pipe (1), wherein a sealing cap (2) is detachably connected to the lower end of the water storage pipe (1), and the water storage pipe (1) has a water-blocking portion (1a) extending axially downward from its upper end and being cylindrical in shape, wherein a water passage gap exists between the water-blocking portion (1a) and the sealing cap (2), and a water storage cavity (1b) exists between the water-blocking portion (1a) and the inner wall of the water storage pipe (1), characterized in that, The water storage pipe (1) is fixedly connected to a connecting pipe (3) that connects to the water storage cavity (1b) near its upper end. Both the inner and outer walls of the connecting pipe (3) are fitted with sealing rings (4). The connecting pipe (3) is inserted into or sleeved with a drain pipe (5). The upper end of the water storage pipe (1) is axially inserted into a water receiving pipe (6) that extends into the water blocking part (1a). The outer end of the water receiving pipe (6) is the connecting end. The upper end of the water storage pipe (1) is connected to a locking cap (7) by an external thread. A sealing ring (8) is provided between the locking cap (7) and the upper end of the water storage pipe (1) to seal the outer wall of the water receiving pipe (6).

2. A drain pipe according to claim 1, characterized in that, The outer end of the water inlet pipe (6) has a flange (6a), and the water inlet pipe (6) is fitted with a locking nut (9). The locking nut (9) has a washer (10) that abuts against the flange (6a) and is in the shape of an annulus.

3. A drain pipe according to claim 2, characterized in that, The water storage pipe (1) is covered by an outer shell (11). The upper end of the outer shell (11) is folded inward and covers the locking cap (7). The water receiving pipe (6) extends out of the outer shell (11). The lower end of the water receiving pipe (6) is flush with the bottom of the water storage pipe (1). The outer shell (11) has a clearance hole for the connecting pipe (3) to extend out.

4. A drain pipe according to claim 3, characterized in that, The water storage pipe (1) has a radially convex connecting ring (12) on the inner wall of its bottom. The inner wall of the connecting ring (12) has an internal thread. The sealing cap (2) has an external thread that connects with the internal thread. The outer wall of the sealing cap (2) has a step. An O-ring (13) is provided between the step and the connecting ring (12). The bottom surface of the sealing cap (2) has two symmetrical semi-circular grooves so that there is a crossbeam (2a) in the middle of the bottom of the sealing cap (2).

5. A drain pipe according to claim 4, characterized in that, A decorative cap (14) is fixed to the outer wall of the end of the drain pipe (5) away from the connecting pipe (3).

6. A drain pipe according to claim 5, characterized in that, The inner wall of the connecting pipe (3) is fitted with two sealing rings (4), and the outer wall of the connecting pipe (3) is fitted with three sealing rings (4).

7. A drain pipe according to claim 6, characterized in that, When the drain pipe (5) is inserted into the connecting pipe (3), the outer wall of the connecting pipe (3) is fitted with a stainless steel sleeve (15) to cover it.

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