Floor drain device
By introducing axial and circumferential positioning assembly structures and rotary positioning designs into the washing machine floor drain device, the problems of difficult cleaning, easy flushing, and non-adjustable angle of the washing machine floor drain connection are solved, achieving a stable connection and flexible adaptation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 刘悦
- Filing Date
- 2025-08-05
- Publication Date
- 2026-06-26
AI Technical Summary
Existing washing machine floor drain devices have problems such as being difficult to clean, easily being blown open by water pressure, difficult to connect, poor sealing, and poor drainage. In addition, the angle of the drain pipe cannot be flexibly adjusted.
A floor drain device was designed, including a floor drain sleeve and a drain cylinder. Through a positioning assembly structure with mutual constraints in the axial and circumferential directions, combined with a sealing gasket and a rotation positioning structure, a stable connection of the drain cylinder and flexible angle adjustment are achieved.
The system achieves a stable and reliable structure for the floor drain device, with convenient connection and installation, excellent adaptability, avoids the risk of water flushing, and allows adjustment of the drain interface angle as needed to adapt to the installation requirements of different drainage pipes.
Smart Images
Figure CN224412758U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of floor drain technology, specifically to a floor drain device. Background Technology
[0002] To enable both ordinary floor drains and pipe drainage, floor drain devices have been developed that can be connected to drainage equipment such as washing machines. For example, the common washing machine floor drain structure is described in patent document CN219490449U, which discloses a dedicated floor drain assembly for washing machine drainage and its anti-backflow connector; or CN208152203U, which discloses a floor drain assembly for washing machines, mainly comprising a floor drain body, a floor drain filter plate, and a washing machine drain pipe connector. The floor drain filter plate is used for floor drainage, while the washing machine drain pipe is directly connected to the floor drain body through the connector for drainage.
[0003] The existing technology, where the washing machine drain pipe connector is integrated with the floor drain filter plate, not only presents challenges in cleaning but also makes it susceptible to being pushed back open or even detached from the floor drain pipe due to water pressure during use. Furthermore, the washing machine floor drain connector uses a fixed angle design, making it impossible to adapt or adjust to the actual drain pipe routing. When the washing machine drain pipe and connector are not aligned, it can lead to connection difficulties, poor sealing, or poor drainage.
[0004] In view of this, the applicant conducted in-depth research on the above-mentioned problems and proposed a washing machine floor drain device to overcome the aforementioned technical problems, thus giving rise to this case. Utility Model Content
[0005] The purpose of this utility model is to provide a floor drain device that can adapt to and adjust the connection angle, which has the advantages of stable and reliable structure, flexible and adjustable angle, convenient connection and installation, and good adaptability.
[0006] To achieve the above objectives, the solution of this utility model is:
[0007] A floor drain device includes a floor drain sleeve and a drain cylinder that can be detachably assembled on the floor drain sleeve; the drain cylinder is provided with a water inlet, a drain interface and a lower water outlet; the drain cylinder and the floor drain sleeve are provided with a positioning and assembly structure that mutually constrains and positions each other axially and moves relative to each other circumferentially.
[0008] The positioning assembly structure includes a circumferentially extending limiting part and a corresponding mating part; the limiting part and the mating part are interlocked along the axial direction and can move relative to each other in the circumferential direction.
[0009] The positioning assembly structure includes an annular guide rail provided on one of the drainage cylinder or the floor drain sleeve, and a protrusion provided on the other. The protrusion is embedded in the annular guide rail for axial constraint and slides circumferentially along the annular guide rail.
[0010] The annular guide rail has a radially penetrating notch, through which the protrusion is inserted or removed from the annular guide rail.
[0011] A sealing gasket is provided at the contact interface between the annular guide rail and the protrusion on the drainage cylinder.
[0012] The drainage cylinder is provided with a connector body that extends laterally and forms the drainage interface, and the axis of the drainage interface is arranged at an acute angle or perpendicular to the central axis of the drainage cylinder.
[0013] The drain device further includes a drain filter plate covering the drain cylinder, the drain filter plate having an avoidance notch matching the three-dimensional contour of the connector body; the drain filter plate can be disassembled and assembled independently of the connector body through the avoidance notch; the root of the connector body corresponding to its lateral extension direction has a raised portion extending towards the upper edge of the drain cylinder, the upper surface of the raised portion being flush with or higher than the upper surface of the drain filter plate.
[0014] The drain interface is connected to an adapter that can rotate around the axial direction of the drain interface. The adapter may be one or at least two connected in series.
[0015] A rotary positioning structure is provided between the drain interface and the adapter. The rotary positioning structure includes a positioning ring located on one of the drain interface or the adapter, and an elastic positioning component located on the other. The positioning ring has a plurality of grooves distributed in a circumferential ring. The elastic positioning component includes a receiving cavity, a spring located in the receiving cavity, and a positioning bead pressed by the spring. The positioning bead is pressed against the surface of the positioning ring by the spring force and can be inserted into the groove when the adapter rotates.
[0016] A rotary connection structure is provided between the drain interface and the adapter. The rotary connection structure includes an annular groove on one of the drain interface or the adapter, and a locking block on the other. The locking block is radially embedded in the annular groove, the adapter is axially constrained relative to the drain interface, and the locking block can move circumferentially along the annular groove.
[0017] After adopting the above solution, the new type of floor drain device has a positioning and assembly structure designed between the detachable floor drain sleeve and the drainage cylinder. The structure is stable and reliable. It restricts the axial degree of freedom through mechanical interlocking, so that the drainage cylinder cannot detach from the floor drain sleeve axially under the impact of high-speed water flow, thus completely eliminating the safety hazard of being washed away by water.
[0018] The positioning and assembly structure allows the drainage cylinder to rotate freely relative to the drain sleeve while ensuring stable assembly with the drain sleeve. This allows the drainage interface to be adjusted to any circumferential angle, which is especially useful for situations where the drainage interface is laterally extended or in narrow installation spaces. By freely adjusting the angle, the drainage interface can be adaptively aligned with the external drainage pipe, achieving a simple and effective installation connection. Attached Figure Description
[0019] Figure 1 This is a perspective view of the new type of floor drain device;
[0020] Figure 2 This is a cross-sectional view of the novel floor drain device;
[0021] Figure 3 yes Figure 2 A magnified view of a portion of the image;
[0022] Figure 4 This is a structural schematic diagram of the new type of drainage cylinder and floor drain sleeve;
[0023] Figure 5 This is a structural schematic diagram of the new drainage cylinder and adapter.
[0024] Label Explanation
[0025] Floor drain sleeve 1, protrusion 10; drainage cylinder 2, annular guide rail 20, notch 201, water inlet 21, drainage interface 22, annular groove 221, positioning ring 222, lower water outlet 23, sealing gasket 24, connector body 25, raised part 26; floor drain filter plate 3, avoidance notch 31; adapter 4, locking block 41, mounting hole 42, receiving cavity 43, spring 44, positioning bead 45. Detailed Implementation
[0026] The following detailed description of this case is provided in conjunction with the accompanying drawings and specific embodiments.
[0027] This case involves a floor drain device, such as Figure 1-5As shown, it mainly includes a floor drain sleeve 1 and a drain cylinder 2 that can be detachably assembled onto the floor drain sleeve 1. The drain cylinder 2 is provided with an inlet 21, a drain interface 22, and a lower outlet 23. The inlet 21 is the floor drain inlet for surface drainage, and surface sewage flows from the inlet 21 to the lower outlet 23 to achieve surface drainage. The drain interface 22 is an interface for connecting to an external drainage pipe, and sewage in the drainage pipe flows through the drain interface 22 to the lower outlet 23 to achieve pipe drainage.
[0028] This novel floor drain device includes a positioning assembly structure between the drain cylinder 2 and the floor drain sleeve 1, which provides axial mutual constraint and positioning, and circumferential relative movement and engagement. Specifically, the positioning assembly structure includes a circumferentially extending limiting part on one of the drain cylinder 2 or the floor drain sleeve 1, and a corresponding engaging part on the other. The limiting part and the engaging part are axially fitted together, constraining the drain cylinder 2 relative to the floor drain sleeve 1 in the axial direction. Simultaneously, the limiting part and the engaging part are circumferentially movable, allowing the drain cylinder 2 to rotate relative to the floor drain sleeve 1 around its axial direction.
[0029] Furthermore, the positioning assembly structure includes an annular guide rail provided on one of the drain cylinder 2 or the drain sleeve 1, and a protrusion provided on the other; specifically, the limiting part is the annular guide rail provided on one of the drain cylinder 2 or the drain sleeve 1, and the mating part is the protrusion provided on the other; in a specific embodiment of this invention, an annular guide rail 20 is provided on the drain cylinder 2, and a protrusion 10 is provided on the drain sleeve 1. The protrusion 10 is embedded in the annular guide rail 20 for axial constraint and slides circumferentially along the annular guide rail 20.
[0030] like Figure 4 As shown, the annular guide rail 20 has a radially penetrating notch 201, through which the protrusion 10 is inserted or removed from the annular guide rail 20. In a specific embodiment, the protrusion 10 and the notch 201 are provided in two sets, each corresponding to the other.
[0031] In this specific embodiment of the invention, the positioning and assembly structure consists of a circumferentially extending annular guide rail 20 and a protrusion 10. The protrusion 10 is axially embedded into the annular guide rail 20 through a notch 201, thereby achieving axial constraint and circumferential rotational freedom between the drainage cylinder 2 and the drain sleeve 1. Figure 3 As shown, after the protrusion 10 is fully embedded in the annular guide rail 20, the upper and lower surfaces of the protrusion 10 form a double axial limit with the upper and lower walls of the annular guide rail 20, respectively. When it is necessary to remove the drainage cylinder 2, simply rotate the drainage cylinder 2 so that the protrusion 10 is aligned with the notch 201, and then the drainage cylinder 2 can be lifted vertically to achieve quick disassembly and maintenance.
[0032] This novel floor drain device features a positioning and assembly structure that is robust and reliable. Its mechanical interlocking mechanism constrains axial freedom, preventing the drain cylinder 2 from detaching from the drain sleeve 1 even under high-speed water flow impacts (such as the instantaneous drainage of a washing machine) or negative pressure suction in the pipe, thus completely eliminating the safety hazard of water potentially opening the cover. Simultaneously, the drain cylinder 2 can rotate freely relative to the drain sleeve 1, allowing the drain interface 23 to be adjusted to any circumferential angle. This is particularly useful in situations where the drain interface 23 is laterally extended or in narrow installation spaces, as the freely adjustable angle allows for adaptive alignment between the drain interface 23 and the external drainage pipe, achieving a simple and effective installation connection.
[0033] This new type of floor drain device fundamentally solves the risk of the drain cylinder 2 being washed away and the installation compatibility problem of the side drainage interface 23, achieving a comprehensive breakthrough in the safety, applicability and economy of the floor drain device.
[0034] like Figure 3 As shown in Figure 4, a sealing gasket 24 is provided at the contact interface between the annular guide rail 20 and the protrusion 10 of the drainage cylinder 2. The sealing gasket 24 serves two purposes: firstly, it seals the drainage cylinder 2 and the drain sleeve 1 at the assembly point of the annular guide rail 20; secondly, it acts as a buffer to transform the rigid friction between the annular guide rail 20 and the protrusion 10 into a flexible contact, thereby improving the smoothness of the rotation and adjustment operation of the drainage cylinder 2.
[0035] like Figure 1-5 As shown, the drainage cylinder 2 is provided with a connector body 25 that extends laterally and forms the drainage interface 22. The axis of the drainage interface 22 is arranged at an acute angle or perpendicular to the central axis of the drainage cylinder 2. The angle adjustment effect of the positioning assembly structure is more pronounced for the laterally extended connector body 25.
[0036] The drain device also includes a drain filter plate 3 covering the drain cylinder 1. The drain filter plate 3 has an avoidance notch 31 that matches the three-dimensional contour of the connector body 25. The drain filter plate 3 can be installed and removed independently of the connector body 25 through the avoidance notch 31. The root of the connector body 25, facing its lateral extension direction, has a raised portion 26 extending towards the upper edge of the drain cylinder 2. In the assembled state, the upper surface of the raised portion 26 is flush with or higher than the upper surface of the drain filter plate 3. This ensures that the corresponding ground drainage surface of the drain device can drain smoothly and completely, avoiding water stagnation on the side of the connector body 25.
[0037] In a preferred embodiment of this invention, at least one adapter 4, rotatable about the axial direction of the drain interface 22, is connected to the drain interface 22. The adapter 4 can be a tee adapter or a multi-way adapter with more than one tee. An embodiment of a tee adapter is shown in the figure. One adapter 4 or at least two connected in series can be provided as needed.
[0038] This novel drainage interface 22 connects to a 360° rotatable adapter 4. The adapter 4 can be expanded into a three-way or multi-way structure, allowing simultaneous connection to drainage pipes of washing machines, washbasins, dryers, etc., achieving physical compatibility and hydraulic optimization for drainage from multiple devices. Each adapter 4 can be independently rotated and positioned, facilitating free layout of different drainage pipe connection angles, improving connection and installation convenience and space utilization.
[0039] A rotary connection structure is provided between the drain interface 22 and the adapter 4. The rotary connection structure includes an annular groove on one of the drain interface 22 or the adapter 4, and a locking block on the other. In a specific embodiment, the drain interface 22 has an annular groove 221, and the adapter 4 has a locking block 41. Specifically, the locking block 41 is fitted into a mounting hole 42 on the adapter 4. The annular groove 221 of the drain interface 22 is fitted into the adapter 4, and the locking block 41 is radially embedded in the annular groove 221. The adapter 4 is axially constrained relative to the drain interface 22, while the locking block 41 can move circumferentially along the annular groove 221, thereby enabling the adapter 4 to freely swing and rotate relative to the drain interface 22.
[0040] A rotary positioning structure is provided between the drain interface 22 and the adapter 4. The rotary positioning structure includes a positioning ring located on either the drain interface 22 or the adapter 4, and an elastic positioning component located on the other. In a specific embodiment, a positioning ring 222 is formed on the drain interface 22, which is composed of a plurality of grooves distributed in a circumferential ring. The adapter 4 is provided with the elastic positioning component, which includes a receiving cavity 43, a spring 44 disposed in the receiving cavity 43, and a positioning bead 45 pressed by the spring 44. The positioning bead 45 is pressed against the surface of the positioning ring 222 by the elastic force of the spring 44, and can sink into the groove when the adapter 4 rotates.
[0041] In the rotary positioning structure, the spring 44 continuously provides radial preload, ensuring that the positioning bead 45 remains tightly engaged with the groove. The positioning bead 45 provides precise gear position control and has long-term positioning reliability. The adapter 4 achieves connection angle locking through the rotary positioning structure, ensuring that the adapter angle can be fixed at the optimal angle after free swinging and rotation, thus improving the stability and reliability of the drainage pipe connection performance.
[0042] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention shall fall within the scope of the claims of the present invention.
Claims
1. A floor drain device, characterized in that: It includes a drain sleeve and a drain cylinder that can be detachably assembled onto the drain sleeve; the drain cylinder is provided with a water inlet, a drain interface and a lower water outlet; the drain cylinder and the drain sleeve are provided with a positioning and assembly structure that mutually constrains and positions each other axially and moves relative to each other circumferentially.
2. The floor drain device as described in claim 1, characterized in that: The positioning assembly structure includes a circumferentially extending limiting part and a corresponding mating part; the limiting part and the mating part are interlocked along the axial direction and can move relative to each other in the circumferential direction.
3. A floor drain device as described in claim 1 or 2, characterized in that: The positioning assembly structure includes an annular guide rail provided on one of the drainage cylinder or the floor drain sleeve, and a protrusion provided on the other. The protrusion is embedded in the annular guide rail for axial constraint and slides circumferentially along the annular guide rail.
4. A floor drain device as described in claim 3, characterized in that: The annular guide rail has a radially penetrating notch, through which the protrusion is inserted or removed from the annular guide rail.
5. A floor drain device as described in claim 3, characterized in that: A sealing gasket is provided at the contact interface between the annular guide rail and the protrusion on the drainage cylinder.
6. A floor drain device as described in claim 1, characterized in that: The drainage cylinder is provided with a connector body that extends laterally and forms the drainage interface, and the axis of the drainage interface is arranged at an acute angle or perpendicular to the central axis of the drainage cylinder.
7. A floor drain device as described in claim 6, characterized in that: The drain device further includes a drain filter plate covering the drain cylinder, the drain filter plate having an avoidance notch matching the three-dimensional contour of the connector body; the drain filter plate can be disassembled and assembled independently of the connector body through the avoidance notch; the root of the connector body corresponding to its lateral extension direction has a raised portion extending towards the upper edge of the drain cylinder, the upper surface of the raised portion being flush with or higher than the upper surface of the drain filter plate.
8. A floor drain device as described in claim 1, characterized in that: The drain interface is connected to an adapter that can rotate around the axial direction of the drain interface. The adapter may be one or at least two connected in series.
9. A floor drain device as described in claim 8, characterized in that: A rotary positioning structure is provided between the drain interface and the adapter. The rotary positioning structure includes a positioning ring located on one of the drain interface or the adapter, and an elastic positioning component located on the other. The positioning ring has a plurality of grooves distributed in a circumferential ring. The elastic positioning component includes a receiving cavity, a spring located in the receiving cavity, and a positioning bead pressed by the spring. The positioning bead is pressed against the surface of the positioning ring by the spring force and can be inserted into the groove when the adapter rotates.
10. A floor drain device as described in claim 8 or 9, characterized in that: A rotary connection structure is provided between the drain interface and the adapter. The rotary connection structure includes an annular groove on one of the drain interface or the adapter, and a locking block on the other. The locking block is radially embedded in the annular groove, the adapter is axially constrained relative to the drain interface, and the locking block can move circumferentially along the annular groove.