Embedded connecting box for drainage pipeline

Abstract

The utility model relates to the technical field of building water supply and drainage systems, and provides an embedded connecting box for a drainage pipeline, which comprises a fixed box, a sealing ring and a cover plate, and a lower connecting hole is arranged in the fixed box; the sealing ring is fixedly arranged in the lower connecting hole; the cover plate comprises a plate body and an elastic frame, the plate body is arranged on the sealing ring in a sliding mode and abuts against the sealing ring in a sealed mode, an upper connecting hole is formed in the plate body, and the upper connecting hole is communicated with the lower connecting hole; the elastic frame is fixedly arranged on the plate body and connected with the sealing ring in a clamped mode, and the elastic frame can be separated from the sealing ring. The cover plate is arranged on the sealing ring in a sliding mode, the relative position of the cover plate and the fixing box can be adjusted, the self-locking function of the cover plate can be achieved by arranging the elastic frame and utilizing the clamping connection of the elastic frame and the sealing ring, and therefore the installation convenience of the drainage pipeline is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building water supply and drainage systems, in particular to a pre-buried connection box for drainage pipes. Background Technique

[0002] Drainage pipes are an important part of the building water supply and drainage system, which play the role of discharging building wastewater and waste gas out of the house; in order to facilitate the installation of drainage pipes, during the construction of a building, a connection box for connecting two sections of drainage pipes is usually pre-buried in the ground.

[0003] The invention patent with the publication number of CN116290243A discloses a pre-buried drainage device and a double-vertical-pipe drainage system, including an upper shell and a lower shell, the upper shell is connected to the lower shell, a drainage cavity and a ventilation cavity are arranged in the lower shell, a partition is arranged between the drainage cavity and the ventilation cavity, a lower drainage vertical-pipe connection hole is opened below the drainage cavity, and a lower ventilation vertical-pipe connection hole is opened below the ventilation cavity; an upper three-way pipe connection hole and an upper ventilation vertical-pipe connection hole are opened on the upper shell, the upper three-way pipe connection hole is located above the drainage cavity, the upper ventilation vertical-pipe connection hole is located above the ventilation cavity, a gas channel is formed between the partition and the inner wall above the upper shell, and the drainage cavity is communicated with the ventilation cavity through the gas channel; an inlet hole is opened on the upper shell, and the inlet hole is communicated with the drainage cavity. The pressure limit value curves of each layer under the maximum drainage flow are more stable, effectively reducing the air pressure fluctuation at the three-way joint of the drainage cavity and the upper three-way pipe above it, with a large drainage flow, remarkable drainage effect, low construction cost, and strong practicability.

[0004] In the above technical solution, in order to connect the drainage vertical pipe and the ventilation vertical pipe, a drainage cavity, a ventilation cavity and a gas channel are provided. However, when this drainage device is pre-buried in the building ground, it will shift, resulting in the drainage cavity and the ventilation cavity of the drainage devices in the upper and lower floors of the ground not being coaxially arranged, thus affecting the installation convenience of the drainage vertical pipe and the ventilation vertical pipe. Utility Model Content

[0005] In view of this, the utility model provides a pre-buried connection box for drainage pipes, which can adjust the positions of the cover plate and the fixed box, improving the installation convenience of the drainage pipes.

[0006] The technical solution of the utility model is realized as follows: The utility model provides a pre-buried connection box for drainage pipes, including a fixed box, a sealing ring and a cover plate, wherein,

[0007] A lower connection hole is arranged in the fixed box;

[0008] The sealing ring is fixedly arranged in the lower connection hole;

[0009] The cover plate includes a plate body and an elastic frame. The plate body is slidably arranged on the sealing ring and is in sealing contact with it. An upper connection hole is formed in the plate body, and the upper connection hole is communicated with the lower connection hole; the elastic frame is fixedly arranged on the plate body and is clamped with the sealing ring, and the elastic frame can be separated from the sealing ring.

[0010] Based on the above technical solutions, preferably, a clamping groove is formed in the sealing ring;

[0011] The elastic frame includes a support plate and an elastic tongue. Among them,

[0012] The support plate is fixedly arranged on the plate body;

[0013] One end of the elastic tongue is fixedly arranged on the support plate, and the other end is slidably connected with the clamping groove.

[0014] More preferably, the elastic tongue is an arc-shaped rod structure, and the end of the elastic tongue far from the support plate bends towards the direction close to the support plate.

[0015] More preferably, the outer diameter of the elastic tongue gradually decreases along the direction from the end close to the support plate to the end far from the support plate.

[0016] More preferably, at least three groups of elastic tongues are provided, and multiple groups of elastic tongues are arranged in a circumferential array around the center line of the support plate.

[0017] More preferably, each group of elastic tongues has two, and the distance between the two elastic tongues in the same group gradually increases along the direction away from the support plate, and the two elastic tongues in the same group are arranged oppositely.

[0018] Based on the above technical solutions, preferably, the lower connection hole includes a communication groove and a sewage discharge hole. Among them,

[0019] The communication groove is formed in the top side of the fixed box, and the sealing ring is in sealing contact in the communication groove;

[0020] The sewage discharge hole is formed in the bottom side of the fixed box and is communicated with the upper connection hole through the communication groove, and the inner diameter of the sewage discharge hole is smaller than the inner diameter of the communication groove.

[0021] More preferably, the lower connection hole further includes a fixing groove, and the sealing ring includes a sealing ring body and a clamping post. Among them,

[0022] The fixing groove is formed in the communication groove;

[0023] The sealing ring body is in sealing contact in the communication groove;

[0024] The card post is fixedly arranged on the sealing ring body and is clamped with the fixing groove.

[0025] Further preferably, the sealing ring body includes two sealing strips and two inserting plates. Among them,

[0026] The two sealing strips are in sealing abutment and enclose an annular structure;

[0027] The two inserting plates are respectively fixedly arranged at both ends of the same sealing strip, and connecting grooves are formed at both ends of the other sealing strip. The two inserting plates are respectively clamped in the two connecting grooves.

[0028] On the basis of the above technical solutions, preferably, a plurality of sealing grooves are formed on one side of the sealing ring close to the plate body.

[0029] A pre-buried connection box for a drainage pipe of the present utility model has the following beneficial effects compared with the prior art:

[0030] (1) By sliding the cover plate on the sealing ring, the relative position of the cover plate and the fixing box can be adjusted. By arranging the elastic frame and using its clamping with the sealing ring, the self-locking function of the cover plate can be realized, thereby improving the installation convenience of the drainage pipe;

[0031] (2) By arranging multiple groups of elastic tongues and arranging two opposite elastic tongues in each group of elastic tongues, the self-returning function of the cover plate can be realized, so that the cover plate automatically moves to the central position of the fixing box in the natural state. Description of the Drawings

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 It is an exploded view of a pre-buried connection box for a drainage pipe of the present utility model;

[0034] Figure 2 It is a cross-sectional view of a pre-buried connection box for a drainage pipe of the present utility model at the elastic frame;

[0035] Figure 3 It is a cross-sectional view of a pre-buried connection box for a drainage pipe of the present utility model at the sealing ring;

[0036] Figure 4 It is a three-dimensional view of the cover plate of a pre-buried connection box for a drainage pipe of the present utility model;

[0037] Figure 5 This is an exploded view of the insertion plate in the embedded connection box for a drainage pipe of the present utility model.

[0038] Among them: 1. Fixed box; 101. Lower connection hole; 1011. Communication groove; 1012. Sewage discharge hole; 1013. Fixed groove; 2. Sealing ring; 21. Sealing ring body; 211. Sealing strip; 212. Insertion plate; 22. Clamping post; 201. Card slot; 202. Connection groove; 203. Sealing groove; 3. Cover plate; 31. Plate body; 32. Elastic frame; 321. Support plate; 322. Elastic tongue; 301. Upper connection hole. Specific embodiments

[0039] Next, in combination with the specific embodiments of the present utility model, the technical solutions in the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0040] As Figures 1-5 shown, an embedded connection box for a drainage pipe of the present utility model includes a fixed box 1, a sealing ring 2 and a cover plate 3, and is used to be embedded in the building floor to connect the drainage pipes on the upper and lower floors of the floor.

[0041] Among them, the fixed box 1 is the main frame of this connection box, used to carry other components and be embedded in the building floor. A lower connection hole 101 is provided in the fixed box 1, and the lower connection hole 101 is used to connect with the drainage pipe below the floor.

[0042] The sealing ring 2 is fixedly arranged in the lower connection hole 101 and is used to improve the connection sealing performance between the fixed box 1 and the cover plate 3.

[0043] The cover plate 3 is used to cover the fixed box 1. The cover plate 3 includes a plate body 31 and an elastic frame 32. The plate body 31 is slidably arranged on the sealing ring 2 and is in sealing contact with it. An upper connection hole 301 is formed in the plate body 31, and the upper connection hole 301 is used to connect with the drainage pipe above the ground. The upper connection hole 301 is communicated with the lower connection hole 101, so as to connect the drainage pipes above and below the ground; when the position of the fixed box 1 buried in the ground is offset, it will cause the positions of the connection boxes in multiple floors not to be on the same vertical axis, resulting in the installation direction of the drainage pipe being inclined, which is not conducive to the rapid installation of the drainage pipe. At this time, by using the sliding of the plate body 31 and the sealing ring 2, the upper connection hole 301 can be moved back to the preset position, so that the drainage pipe can be installed vertically, improving the installation convenience of the drainage pipe; the elastic frame 32 is fixedly arranged on the plate body 31 and is clamped with the sealing ring 2. The elastic frame 32 is made of a tough PVC material. When a certain external force is applied to the elastic frame 32, it will undergo a certain elastic deformation, so that the elastic frame 32 can be separated from the sealing ring 2. When this external force is withdrawn, the elastic frame 32 can return to its previous position and state and be clamped with the sealing ring 2. Similarly, by using the elastic deformation of the elastic frame 32 and its clamping with the sealing ring 2, the self-locking function of the two can be realized when assembling the plate body 31 and the sealing ring 2, which also improves the installation convenience of this connection box; of course, in order to ensure the service life of this connection box, the structural design and material selection of the elastic frame 32 also consider that it is not easy to break during the process of elastic deformation under force.

[0044] For the clamping of the elastic frame 32 and the sealing ring 2, a clamping groove 201 can be formed in the sealing ring 2; the elastic frame 32 includes a support plate 321 and an elastic tongue 322. The support plate 321 is fixedly arranged on the plate body 31; one end of the elastic tongue 322 is fixedly arranged on the support plate 321, and the other end is slidably connected with the clamping groove 201; as Figure 2 and Figure 3 shown, when the plate body 31 abuts against the upper side of the sealing ring 2, the end of the elastic tongue 322 far from the support plate 321 snaps into the clamping groove 201, so that the elastic tongue 322 is clamped with the clamping groove 201 to fix the cover plate 3 and the sealing ring 2.

[0045] The elastic tongue 322 is preferably an arc-shaped rod structure, and the end of the elastic tongue 322 far from the support plate 321 bends towards the direction close to the support plate 321. Compared with a linear structure, the arc-shaped elastic tongue 322 is more likely to undergo elastic changes and has a better support effect.

[0046] In order to improve the elastic effect of the end of the elastic tongue 322 far from the support plate 321, it is preferably that the outer diameter of the elastic tongue 322 gradually decreases from the end close to the support plate 321 to the end far from the support plate 321.

[0047] AsFigure 2 and Figure 4 As shown in Figure 4 , there are at least three sets of tongue pieces 322, preferably four sets, and multiple sets of tongue pieces 322 are arranged in a circumferential array around the center line of the support plate 321 (it is not required that the distances from multiple sets of tongue pieces 322 to the center line of the support plate 321 are equal, but it is required that the central angles corresponding to adjacent two sets of tongue pieces 322 are equal). By using the abutment of multiple sets of tongue pieces 322 against the sealing ring 2, the cover plate 3 can be automatically moved to the initial position (the initial position is preferably the central position of the fixed box 1) in the natural state, so that the cover plate 3 has a self-return function.

[0048] Each set of tongue pieces 322 is provided with two tongue pieces. The distance between the two tongue pieces in the same set gradually increases in the direction away from the support plate 321, and the two tongue pieces in the same set are oppositely arranged. As Figure 2 shown in Figure 2 , each set of the tongue pieces 322 can provide two symmetrical elastic forces to the support plate 321, thereby improving the force stability of the cover plate 3.

[0049] As Figure 1 shown in Figure 1 , the lower connection hole 101 includes a communication groove 1011, a sewage discharge hole 1012 and a fixing groove 1013. The communication groove 1011 is opened on the top side of the fixed box 1, and the sealing ring 2 is sealed and abutted in the communication groove 1011; the sewage discharge hole 1012 is opened on the bottom side of the fixed box 1 and is communicated with the upper connection hole 301 through the communication groove 1011. The inner diameter of the sewage discharge hole 1012 is smaller than the inner diameter of the communication groove 1011. By using the support of the communication groove 1011 for the sealing ring 2, the fixing stability and firmness of the sealing ring 2 can be improved.

[0050] The sealing ring 2 includes a sealing ring body 21 and a clamping post 22. The fixing groove 1013 is opened in the communication groove 1011; the sealing ring body 21 is sealed and abutted in the communication groove 1011; the clamping post 22 is fixedly arranged on the sealing ring body 21 and is clamped with the fixing groove 1013, thereby improving the fixing firmness of the sealing ring 2 and preventing it from separating from the fixed box 1.

[0051] The sealing ring body 21 includes two sealing strips 211 and two insertion plates 212. The two sealing strips 211 are sealed and abutted to form an annular structure; the two insertion plates 212 are respectively fixedly arranged at both ends of the same sealing strip 211, and connection grooves 202 are opened at both ends of the other sealing strip 211. The two insertion plates 212 are respectively clamped in the two connection grooves 202; by setting the sealing ring body 21 as a split structure, when one of the sealing strips 211 is damaged, only this part of the sealing strip 211 needs to be replaced and maintained, without the need to maintain the entire sealing ring body 21, thereby reducing the maintenance cost of this connection box.

[0052] As Figure 1As shown in the figure, a plurality of sealing grooves 203 are formed on one side of the sealing ring 2 close to the plate body 31. The formation of the sealing grooves 203 can not only weaken the structural strength of the top side of the sealing ring 2, making it more likely to undergo elastic deformation, improving the sealing performance between the sealing ring 2 and the cover plate 3, but also strengthen the fixing firmness between the sealing ring 2 and the cover plate 3 by filling the bonding agent into the sealing grooves 203.

[0053] The usage method of a pre-embedded connection box for a drainage pipe of the present utility model is as follows:

[0054] First, embed the fixed box 1 in the building floor. Then, install the sealing ring 2 in the communication groove 1011. Next, bend one end of the plurality of elastic tongues 322 away from the support plate 321 towards the direction close to the support plate 321, install the cover plate 3 on the top side of the sealing ring 2, and make the elastic tongues 322 snap into the card slots 201. Finally, move the cover plate 3 according to the position of the lower connection hole 101 in the upper connection box, so that the upper connection hole 301 in the lower connection box is coaxial with the lower connection hole 101 in the upper connection box, and then the lower end of the drainage pipe can be installed in the upper connection hole 301 in the lower connection box, and the upper end of the drainage pipe can be installed in the lower connection hole 101 in the upper connection box.

[0055] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A pre-buried connection box for a drainage pipe, characterized in that: It comprises a fixing box (1), a sealing ring (2) and a cover plate (3), wherein: The fixing box (1) is provided with a lower connecting hole (101); The sealing ring (2) is fixedly arranged in the lower connecting hole (101); The cover plate (3) comprises a plate body (31) and an elastic frame (32); the plate body (31) is slidably arranged on the sealing ring (2) and is in sealing contact with the sealing ring; an upper connecting hole (301) is provided on the plate body (31), and the upper connecting hole (301) is connected to the lower connecting hole (101); the elastic frame (32) is fixedly arranged on the plate body (31) and is snap-connected with the sealing ring (2); the elastic frame (32) can be separated from the sealing ring (2).

2. A pre-buried connection box for a drainage pipe as claimed in claim 1, characterized in that: The sealing ring (2) is provided with a slot (201); The elastic frame (32) comprises a support plate (321) and an elastic tongue (322), wherein: The support plate (321) is fixedly arranged on the plate body (31); One end of the elastic tongue (322) is fixedly arranged on the support plate (321), and the other end is slidably connected to the card slot (201).

3. A pre-buried connection box for a drainage pipe as claimed in claim 2, characterized in that: The spring tongue (322) is an arc-shaped rod-shaped structure, and one end of the spring tongue (322) away from the support plate (321) is bent in a direction close to the support plate (321).

4. A pre-buried connection box for a drainage pipe as claimed in claim 3, characterized in that: The outer diameter of the spring tongue (322) gradually decreases along a direction from an end thereof close to the support plate (321) to an end thereof far from the support plate (321).

5. The embedded connection box for drainage pipe according to claim 2, characterized in that: At least three groups of the spring tongues (322) are provided, and the multiple groups of the spring tongues (322) are arranged in a circular array around the center line of the support plate (321).

6. A pre-buried connection box for a drainage pipe as claimed in claim 5, characterized in that: Each group of the elastic tongues (322) is provided with two, the distance between the two elastic tongues (322) in the same group gradually increases in a direction away from the support plate (321), and the two elastic tongues (322) in the same group are arranged opposite to each other.

7. The pre-buried connection box for drainage pipe according to claim 1, characterized in that: The lower connection hole (101) comprises a communication groove (1011) and a drainage hole (1012), wherein: The communication groove (1011) is provided on the top side of the fixing box (1), and the sealing ring (2) is sealed against the inside of the communication groove (1011); The drainage hole (1012) is provided on the bottom side of the fixing box (1) and is connected to the upper connecting hole (301) via the connecting groove (1011); the inner diameter of the drainage hole (1012) is smaller than the inner diameter of the connecting groove (1011).

8. The pre-buried connection box for drainage pipe according to claim 7, characterized in that: The lower connection hole (101) further comprises a fixing groove (1013), and the sealing ring (2) comprises a sealing ring body (21) and a clamping column (22), wherein: The fixing groove (1013) is disposed in the connecting groove (1011); The sealing ring body (21) is sealed against the connecting groove (1011); The clamping column (22) is fixedly arranged on the sealing ring body (21) and is clamped with the fixing groove (1013).

9. A pre-buried connection box for a drainage pipe as claimed in claim 8, characterized in that: The sealing ring body (21) comprises two sealing strips (211) and two plug plates (212), wherein: The two sealing strips (211) are sealed against each other and enclose a ring structure; The two plug plates (212) are respectively fixedly arranged at the two ends of the same sealing strip (211), and the two ends of the other sealing strip (211) are provided with connecting grooves (202), and the two plug plates (212) are respectively clamped in the two connecting grooves (202).

10. The pre-buried connection box for drainage pipe according to claim 1, characterized in that: A plurality of sealing grooves (203) are formed on one side of the sealing ring (2) close to the plate body (31).

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