Reducing secondary drainer

Abstract

A reducing secondary drainer comprises a drainage pipe and a floor drain pipe, the diameter of the floor drain pipe is larger than that of the drainage pipe, the floor drain pipe and the drainage pipe are connected into a whole through a big-end-up reducing pipe, the reducing secondary drainer further comprises a filter cover, the lower end of the filter cover is concaved upwards and inwards to form a drainage area, and a mounting hole is formed in the center of the filter cover. The filter cover is sleeved on the outer cylindrical surface of the floor drain pipe in an axial sliding mode through the mounting hole, a plurality of filter grooves are arranged on the outer cylindrical surface of the filter cover, and the filter grooves are communicated with the drainage area. According to the reducing secondary drainer, the reducing pipe design is adopted, the reducing secondary drainer can be matched with a sewer pipe and a floor drain which are commonly used in the market at the same time, different types of drainers do not need to be purchased according to different pipe diameters, use convenience is improved, and the trouble that a user cannot use the drainer due to wrong purchasing is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of building drainage, in particular to a variable diameter secondary drainer. Background Art

[0002] At present, the floor of the bathroom is generally a three-layer structure, from bottom to top, there are waterproof layer, mortar layer and tile layer. The traditional floor drain can drain the water on the tile layer into the sewer pipe, but if there is a gap in the tile, the water will flow into the mortar layer from the gap to form water accumulation. The traditional floor drain cannot drain the water accumulated in the mortar layer. Long-term water accumulation will penetrate the floor and walls, causing water seepage and mildew problems on the floor and walls.

[0003] In order to solve the problem of water accumulation in the mortar layer of the bathroom, a utility model patent with application number 201720652712.0 and authorization announcement date of May 4, 2018, entitled "Drainer and Drainage System", discloses a technology: the problem of water accumulation in the mortar layer is solved by installing the drainer between the floor drain and the sewer pipe. However, the drainer in this technology has the following shortcomings:

[0004] 1. Pipe diameter does not match: The pipe diameter of the drainer is too small and cannot match the commonly used sewer pipes and floor drains on the market at the same time, which limits its promotion and application.

[0005] 2. Overflow problem: The drain drains the accumulated water along the inner wall of the drain pipe through drainage holes connecting the inside and outside of the drain. This design poses the risk of water and gas overflowing back into the bathroom along the mortar layer and tile gaps.

[0006] 3. The existing secondary drainers can be divided into 50-type drainers used with 50-type pipes and 75-type drainers used with 75-type pipes according to the commonly used models. These two models are not universal, and users need to pay special attention when purchasing. At the same time, the height of the drainer is also fixed. If the height of the drain pipe is not up to standard, the filter will separate from the ground, resulting in the risk of sand and stone entering and clogging. Therefore, it is necessary to make further improvements. Utility Model Content

[0007] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide a variable diameter secondary drainer which is simple in structure and easy to use and can match the sewer pipes and floor drains commonly used on the market by adopting a variable diameter pipe design.

[0008] The purpose of the utility model is achieved in the following way: a variable diameter secondary drainer, which includes a drain pipe and a floor drain pipe, the diameter of the floor drain pipe is larger than the diameter of the drain pipe, the two are connected as a whole by a variable diameter pipe with a larger upper part and a smaller lower part, and also includes a filter cover, the lower end of the filter cover is upwardly concave to form a drainage area, a mounting hole is opened at the center position, the filter cover is axially slidably mounted on the outer cylindrical surface of the floor drain pipe through the mounting hole, a plurality of filter grooves are arranged on the outer cylindrical surface of the filter cover, and the filter grooves are connected to the drainage area.

[0009] Furthermore, a sleeve is extended upward from the upper end surface of the filter cover, the hollow interior of the sleeve is communicated with the mounting hole, and the sleeve is sleeved on the cylindrical surface of the floor drain pipe and connected thereto.

[0010] Furthermore: the filter grooves are through grooves penetrating the cylindrical surface and the lower end surface of the filter cover, and the through grooves are distributed on the filter cover in a ring array.

[0011] Furthermore: the filtering groove is a rectangular groove or a U-shaped groove or a circular arc groove with an opening at the bottom.

[0012] Furthermore, the outer cylindrical surfaces of the drainage pipe and the reducer are provided with a plurality of isolation strips protruding from the surfaces, and the isolation strips are extended in the axial direction.

[0013] Furthermore: the isolation strips are distributed in a circular array on the outer cylindrical surfaces of the reducer and the drain pipe.

[0014] The beneficial effects of the utility model are: 1. Simple structure, low production cost, and improved market competitiveness. 2. The variable diameter secondary drainer of the utility model adopts a variable diameter pipe design, which can match the commonly used sewer pipes and floor drains on the market at the same time. There is no need to purchase different models of drainers according to different pipe diameters, which increases the convenience of use and avoids the trouble of users being unable to use due to wrong purchases.

[0015] 3. Several filter slots on the filter cover are connected to the drainage area, so that the accumulated water can be drained away quickly, which improves the drainage efficiency, reduces the retention time of accumulated water in the mortar layer, and fundamentally solves the problem of water accumulation in the mortar layer.

[0016] 4. The filter cover of the utility model is designed with an adjustable height structure, which can adapt to the requirements of drain pipe reservation at different heights, ensure that the filter fits tightly against the ground, and prevent the risk of sand and stone entering and clogging caused by separation of the ground and the filter.

[0017] 5. Several axially extending isolation strips are arranged on the outer cylindrical surface of the drain pipe and the reducer. These isolation strips not only enhance the structural stability of the drain pipe and the reducer, but also prevent direct contact between the outer wall of the drain pipe and the inner wall of the sewer pipe, which may cause water seal blockage, making drainage smoother and more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the general assembly effect diagram of the utility model structure.

[0019] Figure 2 , 3 This is a structural exploded view of the utility model.

[0020] Figure 4 This is a diagram showing the effect of the utility model being assembled with a downpipe.

[0021] Figure 5 It is a cross-sectional view of the structure of the utility model and 75 down pipes for assembly and use.

[0022] Figure 6 This is a cross-sectional view of the structure of the utility model when assembled with 50 down pipes. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below with reference to the accompanying drawings. A variable diameter secondary drainer, comprising a drain pipe 1 and a floor drain pipe 2, wherein the floor drain pipe 2 has a diameter larger than that of the drain pipe 1, and the two are connected as one through a variable diameter pipe 3 with a larger upper portion and a smaller lower portion, and further comprising a filter cover 4, wherein the lower end of the filter cover 4 is concave upward to form a drain area 41, and a mounting hole 42 is provided at the center thereof, and the filter cover 4 is axially slidably mounted on the outer cylindrical surface of the floor drain pipe 2 through the mounting hole 42, and a plurality of filter grooves 43 are provided on the outer cylindrical surface of the filter cover 4, and the filter grooves 43 are in conduction with the drain area 41.

[0024] In one embodiment, a sleeve 44 is further extended upward from the upper end surface of the filter cover 4 , the sleeve 44 is hollow inside and communicates with the mounting hole 42 , and the sleeve 44 is sleeved on the cylindrical surface of the floor drain pipe 2 and connected thereto.

[0025] In one embodiment, the filter grooves 43 are through grooves penetrating the cylindrical surface and the lower end surface of the filter cover 4 , and the through grooves are distributed on the filter cover 4 in a circular array.

[0026] In one embodiment, the filtering groove 43 is a rectangular groove or a U-shaped groove or a circular groove with an opening at the bottom.

[0027] In one of the embodiments: the outer cylindrical surfaces of the drain pipe 1 and the reducer 3 are provided with a plurality of isolation strips 5 protruding from the surface thereof, and the isolation strips 5 are extended in the axial direction.

[0028] In one embodiment, the isolation strips 5 are distributed in a circular array on the outer cylindrical surfaces of the reducer 3 and the drain pipe 1 .

[0029] Working principle: The variable diameter secondary drainer of the utility model realizes the functions of efficient drainage and overflow prevention through the synergistic effect of the following components. The working principle is as follows:

[0030] In this case, the variable diameter secondary drain includes a drain pipe 1 and a floor drain pipe 2, wherein the diameter of the floor drain pipe 2 is larger than the diameter of the drain pipe 1. The two are connected as a whole through a reducer 3 that is larger at the top and smaller at the bottom. The upper end diameter of the reducer 3 is larger than the lower end diameter, so that the floor drain pipe and the drain pipe can be smoothly connected to form a stable drainage path. Common sewer pipes on the market are usually 50mm and 75mm in diameter. Therefore, in order to match the above two pipes, the outer diameter of the drain pipe in this case is about 45mm, and the floor drain pipe is designed to have a diameter of about 80mm.

[0031] like Figure 5 As shown, it is a diagram of the effect of use with a sewer pipe 7 with a diameter of 75 mm. In this use state, the largest end of the reducer covers the pipe opening of the sewer pipe, which plays a role in axial positioning of the drainage pipe.

[0032] like Figure 6 As shown, it is a diagram showing the effect of use with a sewer pipe 7 with a diameter of 50 mm. In this use state, the smallest end of the reducer covers the pipe opening of the sewer pipe, which plays a role in axial positioning of the drainage pipe.

[0033] After the drain pipe is inserted into the sewer pipe, a filter cover is mounted on the surface of the floor drain pipe so that the lower end surface of the filter cover is flush with the surface of the mortar layer. Therefore, when there is water seepage in the mortar layer, the seepage water enters the drainage area after passing through the filter groove 43 and is finally discharged through the pipe mouth of the sewer pipe. The floor drain is directly docked and installed on the top of the floor drain pipe. The water discharged from the floor drain is directly discharged into the sewer pipe 7 through the floor drain pipe and the drain pipe. Since the bottom of the floor drain pipe extends below the pipe mouth of the sewer pipe, it can effectively prevent the floor leakage water from flowing back into the mortar layer through the drain pipe.

[0034] Among them, the filter groove 43 on the filter cover 4 is designed as a through groove that penetrates the cylindrical surface and the lower end surface of the filter cover 4, and the shape of the filter groove 43 can be a rectangular groove, a U-shaped groove or an arc groove. These filter grooves ensure that the water flow can be discharged quickly, preventing water accumulation in the mortar layer due to poor water flow. At the same time, the setting of the filter groove can also effectively isolate sand and gravel, and prevent sand and gravel and other debris from entering the pipe when laying floor tiles, blocking the secondary drainage. In addition, the filter grooves are distributed in a circular array, so that water seepage from all directions can enter the sewer pipe through the shortest path and be discharged, further reducing the risk of water accumulation and effectively reducing the water level in the mortar layer.

[0035] Furthermore, in this case, a sleeve 44 extends upward from the upper end surface of the filter cover 4, the sleeve 44 is hollow inside and communicates with the mounting hole 42, and the sleeve 44 is sleeved on the cylindrical surface of the floor drain pipe 2 and fixedly connected thereto. With this design, the height of the filter cover can be adjusted according to actual needs to meet the requirements of different heights of drain pipe reservations, ensure that the filter cover fits tightly with the ground, avoid separation of the ground and the filter, and prevent sand and stones from entering and clogging the secondary drainage system.

[0036] Further: In this case, a plurality of axially extending isolation strips 5 are provided on the outer cylindrical surfaces of the drain pipe 1 and the reducer 3. These isolation strips 5 not only enhance the structural stability of the drain pipe and the reducer, but also prevent the drain pipe from being deformed or displaced due to external forces during installation and use. These isolation strips 5 are distributed in a circular array on the outer cylindrical surfaces of the reducer 3 and the drain pipe 1. When they are connected to the sewer pipe, the isolation strips can effectively isolate a drainage gap between the two, so that water seepage and air can flow through the isolated gap, avoiding water sealing, and further improving the reliability of the drainer.

[0037] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the claims of the present invention.

Claims

1. A variable diameter secondary drainer, characterized in that: It comprises a drainage pipe (1) and a floor drain pipe (2), wherein the diameter of the floor drain pipe (2) is larger than that of the drainage pipe (1), and the two are connected as a whole via a reducer (3) having a larger diameter at the top and a smaller diameter at the bottom. It also comprises a filter cover (4), wherein the lower end of the filter cover (4) is concave upward to form a drainage area (41), and a mounting hole (42) is provided at the center thereof. The filter cover (4) is axially slidably mounted on the outer cylindrical surface of the floor drain pipe (2) through the mounting hole (42), and a plurality of filter grooves (43) are provided on the outer cylindrical surface of the filter cover (4), and the filter grooves (43) are in conduction with the drainage area (41).

2. The variable diameter secondary drainer according to claim 1, characterized in that: A sleeve (44) is further extended upward from the upper end surface of the filter cover (4); the sleeve (44) is hollow inside and communicates with the mounting hole (42); the sleeve (44) is sleeved on the cylindrical surface of the floor drain pipe (2) and connected thereto.

3. The variable diameter secondary drainer according to claim 1, characterized in that: The filter grooves (43) are through grooves that penetrate the cylindrical surface and the lower end surface of the filter cover (4), and the through grooves are distributed on the filter cover (4) in a ring array.

4. A variable diameter secondary drainer according to claim 1 or 3, characterized in that: The filtering groove (43) is a rectangular groove or a U-shaped groove or a circular arc groove with an opening at the bottom.

5. The variable diameter secondary drainer according to claim 1, characterized in that: The outer cylindrical surfaces of the drainage pipe (1) and the reducer (3) are provided with a plurality of isolation strips (5) protruding from the surfaces thereof, and the isolation strips (5) are extended in the axial direction.

6. The variable diameter secondary drainer according to claim 5, characterized in that: The isolation strips (5) are distributed in a circular array on the outer cylindrical surfaces of the reducer (3) and the drainage pipe (1).

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