Anti-disengagement floor drain core

Abstract

The utility model relates to a kind of anti-disengagement floor drain core, including floor drain main body and buoyancy element. Floor drain main body is equipped with water storage cavity and drainage cavity, water storage cavity lower part opens drain hole, drainage cavity upper end is open, lower end is equipped with drain outlet. Buoyancy element includes sealing cover and the shaft portion sliding in water storage cavity, shaft portion covers drain hole, its with water storage cavity interval forms flow guide passage;Sealing cover or the upper end of floor drain main body is equipped with the water inlet with flow guide passage intercommunication. The longitudinal limiting structure between shaft portion and floor drain main body is equipped with, including the limiting portion fixed in floor drain main body and the blocking portion fixed in shaft portion;When buoyancy element floats to limit position, limiting portion and blocking portion abut, limit shaft portion disengagement floor drain main body. Limiting portion is limit pin, and blocking portion is the bottom wall of shaft portion accommodation slot, and limit pin is inserted in the limiting hole of floor drain main body side wall and extends into accommodation slot. The utility model realizes the movement limiting of buoyancy element by limiting structure, and structure is simplified and reliable in operation.

Description

Technical Field

[0001] This utility model relates to the field of floor drain technology, and in particular to a floor drain core that prevents detachment. Background Technology

[0002] Traditional floor drain devices mostly use mechanical opening and closing structures (such as spring-loaded cores and flap-type seals), controlling the opening and closing of the drain outlet through manual pressing or gravity. While this design is widely used, it has the following significant drawbacks: the multi-component assembly increases manufacturing costs, and maintenance requires disassembly and cleaning, resulting in a poor user experience. In recent years, some improved solutions have attempted to incorporate buoyancy control principles.

[0003] For example, float-type floor drains have design limitations: the axial part of the buoyancy element slides freely within the water storage chamber, lacking an effective limiting structure. When subjected to a sudden large flow impact (such as a bathroom sink draining water), the buoyancy element may float excessively and completely detach from the floor drain body, leading to seal failure: the drain hole cannot close, and odors overflow; functional paralysis: the floor drain loses its ability to store water and prevent odors. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a drain core that prevents detachment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a drain core for preventing detachment, comprising a drain body and a buoyancy element. The drain body includes a water storage chamber and a drain chamber, with at least one small drain hole at the lower part of the water storage chamber; the upper part of the drain chamber is open to receive external water, and a drain outlet is provided at the lower part of the drain chamber; the buoyancy element includes a sealing cover and a shaft, the shaft sliding longitudinally within the water storage chamber and covering the drain hole, a flow guide channel being provided between the shaft and the water storage chamber; the sealing cover or the upper end of the drain body... The drain is equipped with an inlet that communicates with the flow channel. The sealing cover is configured to rise and fall with the buoyancy element to open and close the upper port of the drain chamber. The mass-to-volume ratio of the buoyancy element is less than the density of water. A longitudinal limiting structure is provided between the shaft and the drain body. The longitudinal limiting structure includes a first component and a second component that cooperate with each other: the first component is a limiting part fixed to the drain body; the second component is a blocking part fixed to the shaft. When the buoyancy element rises to its limit position, the first component and the second component abut against each other, preventing the shaft from detaching from the drain body.

[0006] As a preferred embodiment of this utility model, the first component is a limiting pin, which is fixed to the inner wall of the drain body; the second component is a blocking part provided on the side wall of the shaft portion.

[0007] As a preferred technical solution of this utility model, the first component is a blocking part provided on the inner wall of the drain body; the second component is a limiting pin fixed to the side wall of the shaft.

[0008] As a preferred technical solution of this utility model, the side wall of the shaft is provided with a relief groove along the axial direction, the limiting pin is fixed to the inner wall of the water storage cavity, and one end of the limiting pin extends into the relief groove, and the blocking part is formed by the bottom wall of the relief groove.

[0009] As a preferred technical solution of this utility model, the drain body has a limiting hole radially formed on its side wall; the limiting pin is inserted into the limiting hole, and its inner end extends to the top of the blocking part.

[0010] As a preferred embodiment of this utility model, the drain body includes an outer cylinder and a water storage cylinder disposed inside the outer cylinder. The drainage cavity is formed between the inner wall of the outer cylinder and the outer wall of the water storage cylinder. The water storage cavity is opened inside the water storage cylinder. The water storage cavity includes a guide groove that restricts the circumferential rotation of the shaft. The shaft has a guide portion extending in the direction of the guide groove. The flow channel is a flow guide gap formed between the outer wall of the shaft and the inner wall of the water storage cavity, and the flow guide gap corresponds to the position of the water inlet.

[0011] As a preferred embodiment of this utility model, the upper end of the outer cylinder is flush with the upper end of the water storage cylinder, the sealing cover is placed flat on the upper ends of the outer cylinder and the water storage cylinder, and the water inlet is opened on the sealing cover and configured as a through hole or notch.

[0012] As a preferred technical solution of this utility model, the lower part of the shaft is provided with a matching sealing surface. The matching sealing surface is a planar, conical, or arc-shaped structure, and the matching sealing surface forms a surface contact seal with the edge of the drain hole.

[0013] Compared with the prior art, the beneficial effects of this utility model are: this application uses the rigid contact of the longitudinal limiting structure (limiting part + blocking part) to forcibly restrict the shaft part from continuing to rise when the buoyancy element floats to the limit position, thus completely solving the problem of the traditional buoyancy drain core detaching due to water flow impact or excessive buoyancy. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the drain core in the closed state of this utility model;

[0015] Figure 2 This is a cross-sectional view of the drain core of this utility model in the closed state;

[0016] Figure 3 This is a schematic diagram of the drain core of this utility model in the open state;

[0017] Figure 4This is a cross-sectional view of the drain core of this utility model in the open state;

[0018] Figure 5 This is a schematic diagram of the buoyancy element in this utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the drain body in this utility model.

[0020] Reference numerals in the attached drawings: 1. Drain body; 2. Buoyancy element; 3. Water storage chamber; 4. Drainage chamber; 5. Drainage hole; 6. Drain outlet; 7. Sealing cover; 8. Shaft; 9. Flow guide channel; 10. Water inlet; 11. Limiting part; 12. Blocking part; 13. Relief groove; 14. Limiting pin; 15. Limiting hole; 16. Water storage cylinder; 17. Outer cylinder; 18. Guide groove; 19. Guide part; 20. Flow guide gap; 21. Adaptive sealing surface. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] like Figure 1-6The drain core shown includes a drain body 1 and a buoyancy element 2. The drain body 1 includes a water storage chamber 3 and a drain chamber 4. The water storage chamber 3 has at least one small drain hole 5 at its lower part. The upper part of the drain chamber 4 is open to receive external water, and the lower part of the drain chamber 4 has a drain outlet 6. The buoyancy element 2 includes a sealing cover 7 and a shaft 8. The shaft 8 slides longitudinally in the water storage chamber 3 and covers the drain hole 5. A guide channel 9 is provided between the shaft 8 and the water storage chamber. The sealing cover 7 or the upper end of the drain body 1 is provided with a water inlet 10 communicating with the guide channel 9. The sealing cover 7 is equipped with... The buoyancy element 2 is positioned to rise and fall with the drain element 2 to open and close the upper port of the drain chamber 4; the mass-to-volume ratio of the buoyancy element 2 is less than the density of water, and a longitudinal limiting structure is provided between the shaft 8 and the drain body 1; the longitudinal limiting structure includes a first component and a second component that cooperate with each other: the first component is a limiting part 11 fixed to the drain body 1; the second component is a blocking part 12 fixed to the shaft 8; when the buoyancy element 2 floats to the limit position, the first component and the second component abut against each other, preventing the shaft 8 from detaching from the drain body 1. In this embodiment, a filter element, such as a filter cylinder, can be optionally installed at the lower end of the drain body 1.

[0024] In this embodiment, the buoyancy element 2 is made of a solid / hollow lightweight material: foamed plastic (foamed PP, foamed PVC, etc.) with a density of 0.2-0.6 g / cm³; or polypropylene with a density of 0.85-0.9 g / cm³; or polyethylene with a density of 0.92-0.97 g / cm³; or foamed silicone with a density of 0.3-0.8 g / cm³; or aerogel solid float with a density of 0.2-0.7 g / cm³; it is not limited to the above types. The ultimate goal is to ensure that the mass-to-volume ratio of the buoyancy element 2 is less than the density of water. The hollow structure uses lightweight materials (lightweight materials usually refer to materials with a density significantly lower than water (<1.0 g / cm³) that can automatically suspend in water). ABS has a density greater than water. Usually, the buoyancy element 2 made of ABS needs to be appropriately hollow so that the mass-to-volume ratio of the buoyancy element 2 is less than the density of water. In the scheme of this application, the average density of the buoyancy element 2 can be reduced by using a hollow structure. The proportion of hollow structure depends on the situation. The overall density of the buoyancy element 2 is reduced so that the mass-to-volume ratio of the buoyancy element 2 is less than the density of water.

[0025] Regardless of whether it is solid or hollow, it is sufficient to verify that the buoyancy is greater than the weight. When water enters the water storage chamber 3 through the inlet 10 and the guide channel 9, it can drive the buoyancy element 2 to float up and open the drain hole 5. When the water stops being injected and the water level drops, the buoyancy element 2 sinks due to gravity, and its lower part directly closes the drain hole 5. If the density of the buoyancy element 2 is greater than the density of water and it is a solid structure, it cannot float naturally. The effective density can be reduced to less than 1.0 g / cm³ by hollowing or composite design.

[0026] This application uses the rigid contact of the longitudinal limiting structure (limiting part 11 + blocking part 12) to forcibly restrict the shaft part 8 from continuing to rise when the buoyancy element 2 floats to the limit position, thus completely solving the problem of the traditional buoyancy drain core detaching due to water flow impact or excessive buoyancy.

[0027] The first component is a limiting pin 14, which is fixed to the inner wall of the drain body 1; the second component is a blocking part 12 provided on the side wall of the shaft part 8. Alternatively, the first component is a blocking part 12 provided on the inner wall of the drain body 1; the second component is a limiting pin 14 fixed to the side wall of the shaft part 8.

[0028] The side wall of the shaft portion 8 is provided with a relief groove 13 along the axial direction. The limiting pin 14 is fixed to the inner wall of the water storage cavity 3, and one end of the limiting pin 14 extends into the relief groove 13. The blocking portion 12 is formed by the bottom wall of the relief groove 13.

[0029] A limiting hole 15 is radially formed on the side wall of the drain body 1; the limiting pin 14 is inserted into the limiting hole 15, and its inner end extends to the top of the blocking part 12.

[0030] The drain body 1 includes an outer cylinder 17 and a water storage cylinder 16 disposed inside the outer cylinder 17. A drainage cavity 4 is formed between the inner wall of the outer cylinder 17 and the outer wall of the water storage cylinder 16. A water storage cavity 3 is opened inside the water storage cylinder 16. The water storage cavity 3 includes a guide groove 18 that restricts the circumferential rotation of the shaft portion 8. The shaft portion 8 has a guide portion 19 extending in the direction of the guide groove 18. The flow channel 9 is a flow guide gap 20 formed between the outer wall of the shaft portion 8 and the inner wall of the water storage cavity 3, and the flow guide gap 20 corresponds to the position of the water inlet 10.

[0031] The upper end of the outer cylinder 17 is flush with the upper end of the water storage cylinder 16. The sealing cover 7 is placed flat on the upper ends of the outer cylinder 17 and the water storage cylinder 16. The water inlet 10 is opened on the sealing cover 7 and is configured as a through hole or notch.

[0032] The lower part of the shaft 8 is provided with a matching sealing surface. The matching sealing surface 21 is a planar, conical, or arc-shaped structure, and the matching sealing surface forms a surface contact seal with the edge of the discharge hole 5.

[0033] Working principle: The drain body 1 is equipped with a water storage chamber 3 and a drainage chamber 4. The drainage chamber 4 serves as a drainage channel. The buoyancy element 2, the water storage chamber 3, and the drain hole 5 work together as an opening and closing device. The mass-to-volume ratio of the buoyancy element 2 is less than the density of water. Based on the Archimedes principle, a purely physical control mechanism is used, with no electronic components throughout the process, simplifying the structure. When a small amount of water enters and meets the buoyancy requirements, it drives the shaft 8 to float up, opening the drain hole 5 and the sealing cover 7 to open the upper port of the drainage chamber 4 for drainage. When the buoyancy element 2 floats to its limit position, the first component and the second component abut against each other, preventing the shaft 8 from detaching from the drain body 1. When the water stops flowing in and the water level drops, the shaft 8 sinks down to close the drain hole 5 and the sealing cover 7 closes the upper port of the drainage chamber 4.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples of this utility model and are not intended to limit it. Various changes and modifications can be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A drain core for preventing detachment, comprising a drain body (1) and a buoyancy element (2), wherein the drain body (1) comprises a water storage chamber (3) and a drain chamber (4), wherein the water storage chamber (3) is provided with at least one drain hole (5) at its lower part; the upper part of the drain chamber (4) is open to receive external water, and the lower part of the drain chamber (4) is provided with a drain outlet (6); the buoyancy element (2) comprises a sealing cover (7) and a shaft (8), wherein the shaft (8) slides longitudinally within the water storage chamber (3) and covers the drain hole (5), a flow channel (9) is provided between the shaft (8) and the water storage chamber, and the upper end of the sealing cover (7) or the drain body (1) is provided with an inlet (10) communicating with the flow channel (9), wherein the sealing cover (7) is configured to rise and fall with the buoyancy element (2) to open and close the upper port of the drain chamber (4); wherein the mass-to-volume ratio of the buoyancy element (2) is less than the density of water, characterized in that: A longitudinal limiting structure is provided between the shaft (8) and the drain body (1); the longitudinal limiting structure includes a first component and a second component that cooperate with each other: the first component is a limiting part (11) fixed to the drain body (1); the second component is a blocking part (12) fixed to the shaft (8); when the buoyancy element (2) floats to the limit position, the first component and the second component abut against each other, preventing the shaft (8) from detaching from the drain body (1).

2. The anti-detachment drain core according to claim 1, characterized in that: The first component is a limiting pin (14), which is fixed to the inner wall of the drain body (1); the second component is a blocking part (12) provided on the side wall of the shaft part (8).

3. The anti-detachment drain core according to claim 1, characterized in that: The first component is a blocking part (12) provided on the inner wall of the drain body (1); the second component is a limiting pin (14) fixed to the side wall of the shaft part (8).

4. The anti-detachment drain core according to claim 2 or 3, characterized in that: The side wall of the shaft (8) is provided with a relief groove (13) along the axial direction. The limiting pin (14) is fixed to the inner wall of the water storage cavity (3), and one end of the limiting pin (14) extends into the relief groove (13). The blocking part (12) is formed by the bottom wall of the relief groove (13).

5. The anti-detachment drain core according to claim 2 or 3, characterized in that: The drain body (1) has a limiting hole (15) radially opened on the side wall; the limiting pin (14) is inserted into the limiting hole (15), and its inner end extends to the top of the blocking part (12).

6. The anti-detachment drain core according to claim 1, characterized in that: The drain body (1) includes an outer cylinder (17) and a water storage cylinder (16) disposed inside the outer cylinder (17). The drain cavity (4) is formed between the inner wall of the outer cylinder (17) and the outer wall of the water storage cylinder (16). The water storage cavity (3) is opened inside the water storage cylinder (16). The water storage cavity (3) includes a guide groove (18) that restricts the circumferential rotation of the shaft (8). The shaft (8) has a guide part (19) extending in the direction of the guide groove (18). The flow channel (9) is a flow gap (20) formed between the outer wall of the shaft (8) and the inner wall of the water storage cavity (3), and the flow gap (20) corresponds to the position of the inlet (10).

7. The anti-detachment drain core according to claim 6, characterized in that: The upper end of the outer cylinder (17) is flush with the upper end of the water storage cylinder (16). The sealing cover (7) is placed flat on the upper end of the outer cylinder (17) and the water storage cylinder (16). The water inlet (10) is opened on the sealing cover (7) and is configured as a through hole or notch.

8. The anti-detachment drain core according to claim 1, characterized in that: The lower part of the shaft (8) is provided with an adaptive sealing surface (21), which is a planar, conical or arc-shaped structure, and the adaptive sealing surface (21) forms a surface contact seal with the edge of the drain hole (5).

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