Retaining grey water collection quick disconnect connection device

By designing a retaining grey water collection quick-release connection device, and utilizing a quick-release anti-accidental contact structure composed of positioning support plates and connecting rods, the problem of easy loosening of grey water collection devices in high-speed train handwashing basins during maintenance was solved, achieving quick disassembly and fixation, and improving the stability and safety of the device.

CN224589135UActive Publication Date: 2026-08-04CHANGCHUN CHANGKE TRACK ENTMT PROTECTION EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHANGCHUN CHANGKE TRACK ENTMT PROTECTION EQUIP CO LTD
Filing Date
2025-10-15
Publication Date
2026-08-04

AI Technical Summary

Technical Problem

The quick-release connection structure of the existing greywater collection device for handwashing basins on high-speed trains is prone to loosening, which makes operation inconvenient during inspection and maintenance and affects the stability of use.

Method used

The retaining greywater collection quick-release connection device is adopted, which includes a quick-release anti-accidental contact structure composed of a positioning support plate, mounting box, connecting rod, coil spring, etc. The greywater collection box can be quickly fixed and disassembled by sliding and pulling the handle to avoid the plug structure from coming out.

Benefits of technology

The operation of the grey water collection tank has been simplified, the safety and reliability of the device have been improved, it can adapt to the maintenance needs of confined spaces, and the connection stability has been ensured.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a retainable quick-release connection device for greywater collection, relating to the field of greywater collection technology. The retainable quick-release connection device includes a sink base box with a hinged door on one side. A greywater collection tank body is installed inside the sink base box. Insertion holes are provided on both sides of the greywater collection tank body. A quick-release anti-accidental contact structure is located on the sink base box. Operators can easily fix and disassemble the greywater collection tank body by simply sliding and pulling the handle, without the need for complex tools. The "L"-shaped structure of the sliding groove and the elastic force of the coil spring ensure that the connecting rod is perpendicular to the insertion rod under normal conditions, preventing the insertion rod from detaching from the insertion hole. Simultaneously, the spring prevents the connecting rod from sliding arbitrarily, thus facilitating scenarios requiring frequent maintenance of the greywater collection tank body and further improving the safety and reliability of the device.
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Description

Technical Field

[0001] This utility model relates to the field of greywater collection technology, and in particular to a retaining greywater collection quick-release connection device. Background Technology

[0002] In the rail transit sector, handwashing stations on high-speed trains are high-frequency sanitary facilities used by passengers. The wastewater generated from handwashing falls under the category of grey water and needs to be collected by a dedicated collection device and directed into the train's wastewater pipeline to prevent wastewater leakage from contaminating the train's structure or affecting equipment operation.

[0003] Because bolts make it difficult to quickly disassemble the grey water collection device, the quick-release connection structure of the grey water collection device in the handwashing basins of high-speed trains currently adopts an "axial plug-in" or "single-sided snap-fit" design. During the inspection and maintenance of high-speed trains, staff need to operate multiple devices in a limited space. Since there is no anti-accidental contact locking mechanism, if maintenance personnel accidentally touch the connecting pipe while operating other components under the handwashing basin, such as when inspecting water pipe valves, the plug-in structure is very likely to come out axially, and the snap-fit ​​structure will loosen, thus affecting the long-term stability of use. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a retaining type quick-release connection device for grey water collection. This device can solve the problem that the quick-release connection structure of grey water collection devices in high-speed train handwashing basins is mostly designed with "axial plug-in" or "single-sided snap-fit" because the bolts are not convenient for quick disassembly of the grey water collection device. During the inspection and maintenance of high-speed trains, the staff need to operate multiple devices in a limited space. Since there is no anti-accidental contact locking mechanism, when the maintenance personnel operate other parts under the handwashing basin, such as repairing water pipe valves, if they accidentally touch the connecting pipe, it is very easy for the plug-in structure to come out axially and the snap-fit ​​structure to loosen, thus affecting the long-term stability of use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a retaining type quick-release connection device for collecting grey water, comprising: The washbasin base box has a door hinged to one side. The washbasin base box contains a grey water collection tank body, and the grey water collection tank body has insertion holes on both sides. Quick-release anti-accidental touch structure, located on the bottom of the sink; The quick-release anti-accidental-touch structure includes a positioning support plate, a mounting box, two fixing boxes, two coil springs, two rotating shafts, and a mounting base. The positioning support plate is fixedly connected to the inner bottom wall of the sink base. The mounting box is fixedly connected to the top of the positioning support plate, and a sliding groove is provided on the top of the mounting box. The two fixing boxes are fixedly connected to the inside of the mounting box, and the two rotating shafts are rotatably connected to the inside of their respective fixing boxes. The opposite ends of the two rotating shafts extend to the outside of their respective fixing boxes and are fixedly connected to the mounting base. The two coil springs are located inside their respective fixing boxes. A connecting rod is slidably connected inside the mounting base. A rotating groove is provided at the bottom of the connecting rod, and the top of the connecting rod passes through the inside of the sliding groove.

[0006] Preferably, the quick-release anti-accidental contact structure further includes a positioning ring, a spring, a rotating plate, and a plug rod. The rotating plate is rotatably connected inside the rotating groove. The side of the rotating plate away from the mounting base is fixedly connected to the plug rod. The plug rod is inserted into the corresponding insertion hole. The positioning ring is fixedly sleeved on the outer surface of the connecting rod. The spring is sleeved on the outer surface of the connecting rod. A handle is fixedly connected to the top of the connecting rod.

[0007] Preferably, there are two quick-release anti-accidental touch structures, which are symmetrically arranged inside the bottom box of the sink.

[0008] Preferably, a limit baffle is fixedly connected inside the rotating groove.

[0009] Preferably, the inner ends of the two coil springs are fixedly connected to the outer surface of the corresponding rotating shaft, and the outer ends of the two coil springs are fixedly connected to the interior of the corresponding fixed box.

[0010] Preferably, the top end of the spring is fixedly connected to the bottom of the positioning ring, and the bottom end of the spring is fixedly connected to the top of the mounting base.

[0011] Preferably, the sliding groove has an "L" shaped structure.

[0012] Preferably, a top cover is bolted to the top of the grey water collection tank body.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This retaining quick-release connection device for greywater collection allows operators to easily fix and disassemble the greywater collection tank by simply sliding and pulling the handle, without the need for complex tools. The "L"-shaped structure of the sliding groove and the elastic force of the coil spring ensure that the connecting rod is perpendicular to the insertion rod under normal conditions, preventing the insertion rod from detaching from the insertion hole. At the same time, the spring prevents the connecting rod from sliding arbitrarily, thus facilitating scenarios that require frequent maintenance of the greywater collection tank and further improving the safety and reliability of the device. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the handwashing basin base box of this utility model; Figure 3 This is a schematic diagram of the internal structure of the mounting box of this utility model; Figure 4 This is a schematic cross-sectional view of the fixing box structure of this utility model; Figure 5 This is a schematic diagram of the mounting base structure of this utility model; Figure 6 This is a schematic diagram of the main structure of the grey water collection tank of this utility model.

[0015] Reference numerals in the attached drawings: 1. Washbasin base; 2. Grey water collection tank body; 3. Positioning support plate; 4. Mounting box; 5. Connecting rod; 6. Sliding groove; 7. Positioning ring; 8. Spring; 9. Fixing box; 10. Rotating shaft; 11. Insert rod; 12. Mounting base; 13. Rotating plate; 14. Limiting baffle; 15. Coil spring; 16. Insertion hole; 17. Rotating groove; 18. Handle. Detailed Implementation

[0016] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0017] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0019] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0020] Handwashing basin base 1: Serves as the mounting carrier for the grey water collection tank body 2 and the quick-release anti-accidental contact structure, providing a stable installation space for the internal components; the hinged door on one side facilitates the opening and closing of the tank for the installation, disassembly and maintenance of the grey water collection tank body 2. Grey water collection tank body 2: used to collect grey water generated by the handwashing sink and realize the centralized storage of grey water; the sockets 16 on both sides can cooperate with the plug 11 in the quick-release anti-accidental contact structure to realize its positioning and locking in the bottom box 1 of the handwashing sink; the top cover installed by bolts on the top is easy to open, and can be used for internal cleaning or grey water dumping. Positioning support plate 3: It is fixedly connected to the inner bottom wall of the sink base box 1, and is used to support and fix the mounting box 4. It provides a stable installation base for the mounting box 4 and the quick-release anti-accidental contact structural components connected later, and ensures the stability of the overall structure. Mounting box 4: It is fixedly connected to the top of the positioning support plate 3. It is used to install two fixing boxes 9 inside. At the same time, the sliding groove 6 opened on its top provides a path for the sliding and rotation of the connecting rod 5. It is one of the core mounting frames of the quick-release anti-accidental contact structure. Connecting rod 5: The top end passes through the sliding groove 6 and is fixedly connected to the handle 18. It can rotate along the sliding groove 6 and slide inside the mounting base 12 under the drive of the handle 18. The rotating groove 17 opened at the bottom end is used to install the rotating plate 13. The outer surface is fixed with a positioning ring 7 and sleeved with a spring 8. When sliding, it can drive the positioning ring 7 to stretch the spring 8, and at the same time drive the insertion rod 11 and the rotating plate 13 to move synchronously. It is a key transmission component for transmitting operating force and realizing quick release function. Sliding groove 6: It is located on the top of the mounting box 4 and has an "L" shape structure. It provides a limited path for the movement of the connecting rod 5, allowing the connecting rod 5 to rotate to a horizontal position along the groove, and guiding the connecting rod 5 to slide along the groove away from the gray water collection box body 2, ensuring the stability of the movement trajectory of the connecting rod 5. Positioning ring 7: It is fixedly sleeved on the outer surface of the connecting rod 5, and its top is fixedly connected to the top of the spring 8; when the connecting rod 5 slides along the mounting base 12, the positioning ring 7 will move synchronously with the connecting rod 5, thereby generating a tensile force on the spring 8, causing the spring 8 to enter the storage state, and is the force transmission component for the storage of the spring 8. Spring 8: It is sleeved on the outer surface of the connecting rod 5, with its top end fixedly connected to the bottom of the positioning ring 7 and its bottom end fixedly connected to the top of the mounting base 12. When the positioning ring 7 slides with the connecting rod 5, the spring 8 is stretched and stores force. After the operator releases the handle 18, it can use its own elastic force to drive the positioning ring 7 and the connecting rod 5 to reset, and the auxiliary insertion rod 11 can be re-inserted into the insertion hole 16 to achieve locking. Fixed box 9: There are two in total, which are fixedly connected inside the mounting box 4. The inside is used to install the rotating shaft 10 and the coil spring 15, providing support for the rotation of the rotating shaft 10, and at the same time providing a closed installation space for the coil spring 15 to protect the coil spring 15 from external interference. Rotating shaft 10: There are two in total, which are rotatably connected to the inside of the corresponding fixed box 9, and their opposite ends extend to the outside of the fixed box 9 and are fixedly connected to the mounting base 12. Their outer surfaces are fixedly connected to the inner end of the coil spring 15. When the mounting base 12 rotates with the connecting rod 5, it will drive the rotating shaft 10 to rotate synchronously, thereby causing the coil spring 15 to store force. It is a component that connects the mounting base 12 and the coil spring 15 and transmits the rotational force. Insert rod 11: It is fixedly connected to the side of the rotating plate 13 away from the mounting base 12 and can move synchronously with the rotating plate 13; In the locked state, the insert rod 11 is inserted into the insertion holes 16 on both sides of the grey water collection tank body 2 to fix the grey water collection tank body 2; When the connecting rod 5 drives the rotating plate 13 to move, the insert rod 11 can be disengaged from the insertion holes 16, which facilitates the disassembly of the grey water collection tank body 2. Mounting base 12: Both ends are fixedly connected to two rotating shafts 10, the inside is slidably connected to the connecting rod 5, and the top is fixedly connected to the bottom end of the spring 8; it can rotate synchronously with the connecting rod 5 under the drive of the rotating shaft 10, and at the same time provide guidance for the sliding of the connecting rod 5. It is a key component for connecting the rotating shaft 10 and the connecting rod 5 and supporting the spring 8. Rotating plate 13: Rotatably connected to the inside of the rotating groove 17 at the bottom of the connecting rod 5, and fixedly connected to the insert rod 11 on one side; it can move synchronously with the connecting rod 5 and rotate in the rotating groove 17. Its rotation angle is limited by the limiting baffle 14. Its main function is to connect the connecting rod 5 and the insert rod 11 and transmit the moving force of the connecting rod 5 to the insert rod 11. Limiting baffle 14: It is fixedly connected inside the rotating groove 17 and is used to limit the rotation angle of the rotating plate 13 to prevent the insertion rod 11 from failing to align accurately with the insertion hole 16 due to excessive rotation angle of the rotating plate 13, thus ensuring the stability of the movement trajectory of the insertion rod 11. Coil springs 15: There are two in total, located inside the corresponding fixed box 9 respectively. The inner end is fixedly connected to the outer surface of the rotating shaft 10, and the outer end is fixedly connected to the inside of the fixed box 9. When the rotating shaft 10 rotates with the mounting base 12, the coil spring 15 is twisted and stores force. After the operator releases the handle 18, it can drive the rotating shaft 10 and the mounting base 12 to reset through its own elasticity, and the auxiliary connecting rod 5 returns to the initial position.

[0021] Example 1: like Figure 1-6 As shown, rotating the handle 18 causes the connecting rod 5 to rotate along the sliding groove 6, thereby rotating the connecting rod 5 to a horizontal position. The rotation of the connecting rod 5 will cause the mounting base 12 to rotate synchronously. The rotation of the mounting base 12 will cause the two rotating shafts 10 to rotate. The rotation of the two rotating shafts 10 will cause the two coil springs 15 to store force. The rotating plate 13 remains in a horizontal position. Then, the operator holds the handle 18 and causes the connecting rod 5 to slide along the inside of the mounting base 12 away from the gray water collection box body 2. When the connecting rod 5 slides, the positioning ring 7 fixed on its outer surface moves synchronously, which stretches the spring 8 sleeved on the outer surface of the connecting rod 5. The spring 8 enters the stored state.

[0022] When the connecting rod 5 slides, it will simultaneously drive the insertion rod 11 and the rotating plate 13 to move synchronously, which makes it easier to disengage the insertion rod 11 from the interior of the corresponding insertion hole 16. At the same time, the two quick-release anti-accidental contact structures are operated to disengage the two insertion rods 11 from the interior of the two insertion holes 16, thereby making it easier to quickly disassemble the grey water collection box body 2.

[0023] Example 2: like Figure 4-5 As shown, the limit baffle 14 can provide the operator with a clear reference for the rotation boundary. When installing or disassembling the grey water collection tank body 2, the operator can observe the contact between the rotating plate 13 and the limit baffle 14 to determine whether the mounting base 12 has rotated to the appropriate position, thereby operating more accurately and improving the efficiency and accuracy of the operation.

[0024] Furthermore, when using the device, turning the handle 18 causes the connecting rod 5 to rotate along the sliding groove 6, thereby rotating the connecting rod 5 to a horizontal position. The rotation of the connecting rod 5 will cause the mounting base 12 to rotate synchronously. The rotation of the mounting base 12 will cause the two rotating shafts 10 to rotate. The rotation of the two rotating shafts 10 will cause the two coil springs 15 to store force. The rotating plate 13 remains in a horizontal position. Subsequently, the operator holds the handle 18 and causes the connecting rod 5 to slide along the inside of the mounting base 12 in a direction away from the gray water collection tank body 2. When the connecting rod 5 slides, the positioning ring 7 fixed on its outer surface moves synchronously, which stretches the spring 8 sleeved on the outer surface of the connecting rod 5, and the spring 8 enters the stored state.

[0025] When the connecting rod 5 slides, it will simultaneously drive the insertion rod 11 and the rotating plate 13 to move synchronously, which makes it easier to disengage the insertion rod 11 from the interior of the corresponding insertion hole 16. At the same time, the two quick-release anti-accidental contact structures are operated to disengage the two insertion rods 11 from the interior of the two insertion holes 16, thereby making it easier to quickly disassemble the grey water collection box body 2.

[0026] The limiting baffle 14 fixed inside the rotating groove 17 restricts the rotation angle of the rotating plate 13. Two quick-release anti-accidental contact structures are symmetrically arranged inside the sink base box 1, which simultaneously locks both sides of the grey water collection box body 2 to avoid tilting or loosening caused by unilateral force, thus meeting the stable installation requirements in the narrow space of the sink base box 1.

[0027] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A quick-release connection device for retaining greywater collection, characterized in that, include: The bottom box of the sink (1) has a door hinged on one side. The bottom box of the sink (1) has a grey water collection box body (2) installed inside. The grey water collection box body (2) has sockets (16) on both sides. The quick-release anti-accidental touch structure is located on the bottom box (1) of the handwashing basin; The quick-release anti-accidental-touch structure includes a positioning support plate (3), an installation box (4), two fixing boxes (9), two coil springs (15), two rotating shafts (10), and a mounting base (12). The positioning support plate (3) is fixedly connected to the inner bottom wall of the sink base (1), the installation box (4) is fixedly connected to the top of the positioning support plate (3), the top of the installation box (4) is provided with a sliding groove (6), and the two fixing boxes (9) are fixedly connected to the inside of the installation box (4). Two rotating shafts (10) are rotatably connected inside the corresponding fixed box (9). The opposite ends of the two rotating shafts (10) extend to the outside of the corresponding fixed box (9) and are fixedly connected to the mounting base (12). Two coil springs (15) are located inside the corresponding fixed box (9). A connecting rod (5) is slidably connected inside the mounting base (12). A rotating groove (17) is opened at the bottom end of the connecting rod (5). The top end of the connecting rod (5) passes through the inside of the sliding groove (6).

2. The quick-release connection device for retaining greywater collection according to claim 1, characterized in that: The quick-release anti-accidental contact structure also includes a positioning ring (7), a spring (8), a rotating plate (13) and a plug rod (11). The rotating plate (13) is rotatably connected inside the rotating groove (17), and the side of the rotating plate (13) away from the mounting base (12) is fixedly connected to the plug rod (11). The insertion rod (11) is inserted into the corresponding insertion hole (16), the positioning ring (7) is fixedly sleeved on the outer surface of the connecting rod (5), the spring (8) is sleeved on the outer surface of the connecting rod (5), and the top of the connecting rod (5) is fixedly connected to a handle (18).

3. The quick-release connection device for retaining greywater collection according to claim 1, characterized in that: The number of quick-release anti-accidental touch structures is two, and the two quick-release anti-accidental touch structures are symmetrically arranged inside the bottom box (1) of the handwashing basin.

4. The quick-release connection device for retaining greywater collection according to claim 1, characterized in that: The rotating groove (17) is internally fixedly connected to a limiting baffle (14).

5. The quick-release connection device for retaining greywater collection according to claim 1, characterized in that: The inner ends of the two coil springs (15) are fixedly connected to the outer surface of the corresponding rotating shaft (10), and the outer ends of the two coil springs (15) are fixedly connected to the interior of the corresponding fixed box (9).

6. The quick-release connection device for retaining greywater collection according to claim 2, characterized in that: The top end of the spring (8) is fixedly connected to the bottom of the positioning ring (7), and the bottom end of the spring (8) is fixedly connected to the top of the mounting base (12).

7. The quick-release connection device for retaining greywater collection according to claim 1, characterized in that: The sliding groove (6) has an "L" shaped structure.

8. The quick-release connection device for retaining greywater collection according to claim 1, characterized in that: The top cover of the grey water collection tank body (2) is bolted on.