A washing machine drain valve
By designing a dirt storage area and a magnetic adsorption structure in the washing machine's drain valve, the problem of solid impurities entering the sewer is solved, achieving efficient impurity interception and cleaning, and improving drainage efficiency and equipment lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGHONG MEILING CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-07-28
AI Technical Summary
Solid impurities in the washing water can easily enter the sewer through the drain valve of a traditional washing machine, causing blockages.
Design a washing machine drain valve, including an inlet pipe, a drain end cap, and a drain pipe. A dirt storage area is formed below the inlet pipe. The drain end cap is detachable and combined with a magnetic adsorption structure to prevent solid impurities from entering the drain pipe.
It effectively intercepts solid impurities in the washing water, prevents clogging, improves drainage efficiency and system stability, facilitates user cleaning, and extends equipment life.
Smart Images
Figure CN224564916U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of washing machine technology, specifically to a washing machine drain valve. Background Technology
[0002] The drain valve is an important component of a washing machine, responsible for draining water from the machine after the washing and rinsing processes are completed.
[0003] As an important household appliance, the washing machine has become an indispensable daily necessity. The washing water in a washing machine contains insoluble solid impurities, including clothing fibers, hair, paper scraps, dust, sand, and hard metal objects.
[0004] At the inlet of the washing machine's drain valve, because the drain valve cuts off the drain pipe, undissolved solid impurities in the washing water will accumulate at the inlet.
[0005] When the washing machine needs to drain the wash water, the actuator pulls the drain valve lever connected to it.
[0006] When the drain valve is open, the washing water passes through the drain valve and drain pipe into the sewer. Some of the solid impurities accumulated at the water inlet will also enter the sewer. Over time, this can easily clog the pipes.
[0007] Therefore, solid impurities in the washing water from traditional washing machine drain valves can easily enter the sewer, which is a technical problem that urgently needs to be solved by those skilled in the art.
[0008] The information disclosed in the background section is only intended to enhance the understanding of the background of this application, and therefore may contain information that is not part of the prior art known to those skilled in the art. Utility Model Content
[0009] This application provides a washing machine drain valve to solve the technical problem that solid impurities in the washing water can easily enter the sewer in traditional washing machine drain valves.
[0010] This application provides a washing machine drain valve, including:
[0011] The water inlet pipe has its upper end serving as the water inlet and its lower end serving as the sewage outlet.
[0012] A drain end cap is detachably connected to the drain port;
[0013] A drain pipe, one end of which is connected to the side of the inlet pipe, and the portion of the inlet pipe located between the drain pipe and the drain outlet of the inlet pipe serves as a waste storage area.
[0014] In practice, the washing machine drain valve also includes:
[0015] A magnet is fixed to the inner bottom of the drain end cover.
[0016] In practice, the length between the sewage outlet of the inlet pipe and the drain pipe is greater than the length between the inlet of the inlet pipe and the drain pipe.
[0017] In practice, the ratio of the length between the sewage outlet of the inlet pipe and the drain pipe to the length between the inlet pipe and the drain pipe is greater than or equal to 1.2 and less than or equal to 2.
[0018] In practice, the outer surface of the lower end of the water inlet pipe is formed with a drain end external thread;
[0019] The sewage discharge end cap has internal threads;
[0020] The internal thread of the sewage discharge end cap and the external thread of the sewage discharge end cooperate to achieve a threaded connection.
[0021] In practice, the inner bottom of the sewage discharge end cover is provided with multiple magnetic clips;
[0022] The magnets are snapped into the space enclosed by the various magnet clips.
[0023] In practice, there are three magnetic clips, and the three magnetic clips are located at the three vertices of an isosceles triangle;
[0024] The three magnetic buckles include an I-shaped first magnetic buckle and two L-shaped second magnetic buckles. The I-shaped first magnetic buckle is located at the apex between the two waists, and the two L-shaped second magnetic buckles are located at the two ends of the bottom edge with the L-shaped openings facing each other.
[0025] In practice, the washing machine drain valve also includes a sealing ring, which is located between the contact surfaces of the drain end cap and the drain port of the inlet pipe.
[0026] In practice, the washing machine drain valve also includes:
[0027] Drain valve switch section;
[0028] The drain valve body of the T-type three-way valve has a vertical pipe as a drain outlet, a horizontal pipe inlet port connected to the inlet pipe, and a drain valve switch blocker that blocks the inlet port of the horizontal pipe of the drain valve body.
[0029] When the drain valve switch is pulled outward, the drain valve switch opens the water inlet port of the horizontal pipe of the drain valve body.
[0030] In implementation, the drain valve switch includes:
[0031] A spring and a rubber stopper with a through hole, the spring being fixed to the inner wall of the through hole in the rubber stopper;
[0032] A piston with a piston rod, the piston rod passing through the center hole of the spring, and the piston being engaged outside one end of the through hole of the rubber stopper, and the open end of the piston rod protruding from the other end of the through hole of the rubber stopper;
[0033] A rubber stopper cap with a through hole is connected to the transverse pipe thread of the drain valve body, such that the piston blocks the water inlet port of the transverse pipe of the drain valve body, and the open end of the piston rod extends out of the through hole of the rubber stopper cap.
[0034] The pull rod is fixed to the open end of the piston rod.
[0035] The embodiments of this application, by adopting the above technical solutions, have the following technical effects:
[0036] The section between the drain pipe and the sewage outlet of the inlet pipe serves as a sewage storage area.
[0037] This application provides a washing machine drain valve, including an inlet pipe, a drain cap, and a drain pipe. The upper end of the inlet pipe serves as an inlet for connecting to the inner tub of the washing machine or a drain pump to receive discharged washing water. The drain cap is detachably connected to the drain outlet to seal it and can be easily removed for cleaning, allowing for the removal of debris from the storage area.
[0038] One end of the drain pipe is connected to the side of the inlet pipe, and the portion of the inlet pipe located between the drain pipe and the drain outlet is defined as the "sludge storage area". This sludge storage area is used to temporarily store solid impurities (such as fine particles like sand) in the washing water discharged from the washing machine, preventing these impurities from directly entering the drain pipe and causing blockage or affecting the normal operation of the subsequent drainage system. Attached Figure Description
[0039] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0040] Figure 1 This is a schematic diagram of a washing machine drain valve according to an embodiment of this application;
[0041] Figure 2 for Figure 1 A schematic diagram of a partial cross-section of the washing machine's drain valve;
[0042] Figure 3 for Figure 1An exploded view of the washing machine's drain valve;
[0043] Figure 4 for Figure 1 A diagram showing another angle of the washing machine's drain valve.
[0044] Figure 5 for Figure 1 A schematic diagram of the drain valve cover of a washing machine.
[0045] Figure label:
[0046] Water inlet pipe 1, water inlet 11, sludge storage area 12, external thread of drain end 13,
[0047] Sewage discharge end cap 2, first magnetic clip 21, second magnetic clip 22, sealing ring 23.
[0048] 3. Magnet; 4. Drain pipe; 5. Drain valve body; 51. Drain outlet; 52. Horizontal pipe thread.
[0049] Rubber stopper 61, piston 62, piston rod 63
[0050] Rubber stopper cap 65, pull rod 66. Detailed Implementation
[0051] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.
[0052] Example 1
[0053] like Figures 1 to 5 As shown in the figure, a washing machine drain valve according to an embodiment of this application includes:
[0054] Water inlet pipe 1, the upper end of which serves as water inlet 11, and the lower end of which serves as sewage outlet;
[0055] Sewage discharge end cap 2 is detachably connected to the sewage discharge port;
[0056] Drain pipe 4, one end of which is connected to the side of water inlet pipe 1, and the portion of water inlet pipe located between the drain pipe and the sewage outlet of water inlet pipe serves as sewage storage area 12.
[0057] This application provides a washing machine drain valve, including an inlet pipe, a drain cap, and a drain pipe. The upper end of the inlet pipe serves as an inlet for connecting to the inner tub of the washing machine or a drain pump to receive discharged washing water. The drain cap is detachably connected to the drain outlet to seal it and can be easily removed for cleaning, allowing for the removal of debris from the storage area.
[0058] Preferably, the drain end cap adopts a threaded connection, snap-fit connection or other detachable connection method to ensure sealing while facilitating user operation.
[0059] One end of the drain pipe is connected to the side of the inlet pipe, and the portion of the inlet pipe located between the drain pipe and the drain outlet is defined as the "sludge storage area". This sludge storage area is used to temporarily store solid impurities (such as fine particles like sand) in the washing water discharged from the washing machine, preventing these impurities from directly entering the drain pipe and causing blockage or affecting the normal operation of the subsequent drainage system.
[0060] In actual use, when the washing machine starts draining, the wash water enters the inlet pipe through the inlet and flows downwards along the inlet pipe. Because the drain pipe is located on the side wall of the inlet pipe, the wash water first enters the dirt storage area as it flows towards the drain pipe. Larger particles of impurities settle and remain at the bottom of the dirt storage area due to gravity. The cleaned water then flows out through the drain pipe.
[0061] When a certain amount of impurities accumulate in the sludge storage area, users can clean out the impurities by unscrewing the drain end cap, thereby keeping the inside of the drain valve clean and extending its service life.
[0062] The washing machine drain valve provided in this application has the following beneficial technical effects:
[0063] Simple and reasonable structure: By setting a drain pipe on the side of the water inlet pipe and forming a dirt storage area below it, the washing water and impurities are effectively separated.
[0064] Improved drainage efficiency and safety: The design of the waste storage area can effectively intercept solid impurities in the washing water, preventing them from entering the drain pipe and causing blockages, thereby improving drainage efficiency and system stability.
[0065] Easy to maintain and clean: The drain end cap is detachable, which allows users to easily clean the sludge area and reduce maintenance costs.
[0066] Extend equipment life: Reducing the impact of impurities on the drainage system helps extend the lifespan of the washing machine and its drainage system.
[0067] Improve user experience: Avoid frequent fault alarms or repairs caused by poor drainage, thereby increasing user satisfaction.
[0068] In summary, the washing machine drain valve provided in this application embodiment is not only scientifically and rationally designed, but also highly practical, and has good application prospects and promotional value.
[0069] During implementation, such as Figure 3 As shown, the washing machine drain valve also includes:
[0070] Magnet 4 is fixed to the inner bottom of the sewage discharge end cover 2.
[0071] The magnet is fixed to the bottom of the drain cover, preferably at the center of a plane that is approximately perpendicular to the axis of the inlet pipe.
[0072] During use, when the washing water discharged from the washing machine contains metallic impurities (such as iron filings, steel wire fragments, etc.), these impurities enter the inlet pipe with the water flow and are deposited in the dirt storage area located at the bottom of the inlet pipe due to gravity. Because the magnet is located on the inner bottom surface of the drain end cover, the magnetic field it generates can attract and fix the metallic impurities that fall to the bottom of the dirt storage area, preventing them from being carried back by the water flow during subsequent drainage and clogging the drain pipe or entering the external drainage system.
[0073] In addition, when users remove the drain cover for cleaning, the magnet can stably fix the adsorbed metal impurities on its surface, preventing metal particles from scattering or falling into the drain outlet and causing secondary pollution or cleaning difficulties, thereby improving overall cleaning efficiency and safety.
[0074] Preferably, the magnet is a permanent magnet, such as a neodymium iron boron magnet or a rubber magnet, which has strong magnetic attraction and good corrosion resistance, and can work stably in a humid environment for a long time.
[0075] The washing machine drain valve provided in this application embodiment, after installing a magnet on the inner bottom of the drain end cover, brings the following significant technical effects:
[0076] Effectively intercepts metallic impurities: By using magnets to attract metallic impurities (such as iron filings, small metal particles, etc.), it effectively prevents them from entering drainage pipes or external drainage systems, reducing the risk of blockage.
[0077] Improved cleaning convenience: During the disassembly of the drain end cap, the magnet can firmly attract metal impurities, making it easy for users to clean them up in one place and avoiding problems such as impurities slipping, splashing, or being difficult to collect.
[0078] Enhanced system stability: Reducing the wear or jamming effects of metallic impurities on key components such as the drain pump and pipes helps extend the service life of the washing machine's drainage system.
[0079] Enhance product safety: Prevent scratches or other safety hazards that may be caused by metal debris during drainage, thereby improving the overall safety performance of the machine.
[0080] In practice, the length between the sewage outlet of the inlet pipe and the drain pipe is greater than the length between the inlet of the inlet pipe and the drain pipe.
[0081] The water inlet pipe extends vertically, with its upper end serving as the inlet for connecting to the inner tub of the washing machine or the drain pump to receive the discharged washing water; its lower end serves as the drain outlet for discharging the filtered and settled washing water and impurities. The drain pipe is connected to the side wall of the water inlet pipe to guide the treated washing water to the external drainage system.
[0082] One key technical improvement is that the axial distance (i.e., length) between the drain outlet of the inlet pipe and the outlet pipe is greater than the axial distance between the inlet pipe and the outlet pipe. In other words, along the axial direction of the inlet pipe, the outlet pipe is closer to the inlet end and farther from the drain outlet end.
[0083] This asymmetrical structural design allows for a longer space below the drain pipe in the inlet pipe, creating a larger storage area for contaminants. This area is specifically designed to collect and temporarily store solid impurities (such as metal shavings and silt) that settle from the washing water, preventing these impurities from directly entering the drain pipe with the water flow and causing blockages or equipment wear.
[0084] In actual operation, when the washing machine starts the drain cycle, wash water enters the inlet pipe from the inlet and flows downwards along it. Since the drain pipe is located in the upper-middle section of the inlet pipe, the wash water first flows through the lower section of the longer inlet pipe (the dirt accumulation zone). During this process, larger particles of impurities gradually settle to the bottom of the inlet pipe due to gravity and are retained in the dirt accumulation zone. The cleaned water then flows smoothly through the drain pipe into the external drainage system.
[0085] Meanwhile, by combining the drain end cap mentioned in the previous embodiment with the optional magnetic adsorption structure, the efficiency of capturing and cleaning impurities can be further improved, making the entire drainage process more stable and reliable.
[0086] This application embodiment achieves the following significant technical effects by designing the length between the sewage outlet of the water inlet pipe and the drainage pipe to be greater than the length between the water inlet pipe and the drainage pipe:
[0087] Enhanced sedimentation capacity: The extended sedimentation zone provides greater sedimentation space, which helps solid impurities in the washing water to settle fully and reduces the possibility of them being discharged with the water flow.
[0088] Reduce the risk of drain pipe blockage: By increasing the length of the sludge storage area, more impurities are effectively intercepted, preventing them from entering the drain pipes, thereby improving the stability of the drainage system.
[0089] Improved drainage efficiency and safety: Wash water is allowed to stand and settle for a longer period of time before entering the drain pipe, which helps improve drainage efficiency and reduce the failure rate caused by the accumulation of impurities.
[0090] Easier for users to maintain: A longer dirt storage area means a higher impurity capacity, reducing the frequency of cleaning and improving ease of use.
[0091] The structure is reasonably designed and easy to manufacture: the structure can be achieved by adjusting the mold size without changing the overall layout of the drain valve, making it suitable for large-scale production applications.
[0092] In summary, the embodiments of this application, through the optimized design of the inlet pipe length relationship, achieve effective control of the drainage path, improve the adaptability and reliability of the washing machine drain valve under complex working conditions, and have good practical value and prospects for promotion and application.
[0093] In practice, the ratio of the length between the sewage outlet of the inlet pipe and the drain pipe to the length between the inlet pipe and the drain pipe is greater than or equal to 1.2 and less than or equal to 2.
[0094] By limiting the ratio of the length between the inlet and outlet of the water inlet pipe to the length between the outlet and outlet pipe to a range greater than or equal to 1.2 and less than or equal to 2, the following significant technical effects are achieved:
[0095] Optimize impurity settling efficiency: Extending the length of the dirt storage zone within a reasonable range is beneficial for the full settling of solid impurities in the washing water, reducing the possibility of them being discharged with the water flow.
[0096] Avoid structural redundancy: Compared to excessively long inlet pipe designs, this proportion range can effectively control the overall volume, balancing space utilization efficiency and functionality.
[0097] Improve drainage stability: Through reasonable proportion design, impurities in the drainage path are separated more thoroughly, reducing the risk of drainage system blockage and improving the overall operational stability of the machine.
[0098] Enhanced user maintenance convenience: The sludge storage area has a moderate volume, which can accommodate a lot of impurities without requiring frequent cleaning, thus improving the user experience.
[0099] During implementation, such as Figure 3 As shown, the outer surface of the lower end of the water inlet pipe has a drain end external thread 13;
[0100] The sewage discharge end cap has internal threads;
[0101] The internal thread of the sewage discharge end cap and the external thread 13 of the sewage discharge end cap cooperate to achieve a threaded connection.
[0102] To further improve the connection reliability and sealing performance between the drain end cap and the inlet pipe in the washing machine drain valve, and to facilitate user disassembly and cleaning, this application embodiment optimizes and improves the connection structure between the drain end cap and the drain port of the inlet pipe.
[0103] Specifically, as shown in the figure, the lower end of the water inlet pipe (i.e., the end closest to the drain outlet) is provided with a drain end external thread on its outer surface. The drain end external thread can be integrally formed on the lower end outer wall of the water inlet pipe, or it can be manufactured by machining or injection molding to ensure that it has good mechanical strength and durability.
[0104] Correspondingly, the drain end cover is provided with a matching internal thread structure. The internal thread is provided on the inner side wall of the open end of the drain end cover and is used to engage with the external thread of the drain end at the lower end of the inlet.
[0105] When the drain cap needs to be installed, rotate it clockwise and tighten it onto the lower end of the inlet pipe to achieve a tight threaded fit, thus realizing a detachable threaded connection between the drain cap and the inlet pipe. This connection method not only ensures good sealing and prevents washing water leakage, but also makes it easy for users to regularly disassemble and clean impurities in the dirt storage area.
[0106] In actual use, when users find that the drainage is not smooth or that regular maintenance is required, they can simply unscrew the drain end cap counterclockwise to remove the metal shavings and other impurities deposited in the dirt area. After cleaning, tighten the cap again to restore normal use.
[0107] This application embodiment achieves the following beneficial technical effects by providing an external thread at the lower end of the inlet pipe and a matching internal thread on the drain end cover:
[0108] Reliable connection and strong sealing: The threaded connection ensures a secure connection between the drain cover and the water inlet pipe, effectively preventing washing water leakage and ensuring the safe operation of the washing machine.
[0109] Easy to disassemble and clean: Users can easily disassemble and install the drain end cap by simply turning it, which greatly improves maintenance efficiency and convenience.
[0110] High structural versatility and good adaptability: The threaded structure has a high degree of standardization, adapting to different sizes and models of drain valves, which is conducive to product series development and mass production.
[0111] During implementation, such as Figure 5 As shown, the inner bottom of the sewage discharge end cap is provided with multiple magnetic buckles;
[0112] The magnet 3 is snapped into the space enclosed by the various magnet clips.
[0113] During the actual assembly process, the magnet is pressed vertically downwards from above and inserted between multiple magnet clips to secure the magnet.
[0114] During implementation, such as Figure 5 As shown, there are three magnetic clips, and the three magnetic clips are located at the three vertices of an isosceles triangle;
[0115] The three magnetic buckles include an I-shaped first magnetic buckle 21 and two L-shaped second magnetic buckles 22. The I-shaped first magnetic buckle 21 is located at the apex between the two waists, and the two L-shaped second magnetic buckles 22 are located at the two ends of the bottom edge with the L-shaped openings facing each other.
[0116] During the actual assembly process, the magnet is pressed vertically downwards from above and inserted between the three magnet clips. The first magnet clip of type I achieves center positioning, while the two second magnet clips of type L use the oppositely arranged opening structure to stably clamp and fix the two sides of the magnet, preventing it from shifting or falling off.
[0117] Preferably, the magnetic buckle is integrally integrated into the inside of the sewage end cover using a plastic injection molding process, which has good elasticity and fatigue resistance, ensuring that it can maintain a stable clamping force after multiple disassembly and assembly.
[0118] This structure is particularly suitable for use in washing machine drain valves that are exposed to humid and vibrating environments for extended periods. It effectively prevents the magnet from loosening or falling off due to vibration or water flow impact, thus ensuring its adsorption effect on metal impurities and the overall operational stability of the drainage system.
[0119] This application embodiment achieves the following significant technical effects by arranging the three magnetic snaps in an isosceles triangle layout and using a combination of an I-shaped first magnetic snap and two opposing L-shaped second magnetic snaps:
[0120] Precise positioning and reliable assembly: By using the three-point positioning principle and an isosceles triangle layout, the magnets are precisely positioned, avoiding eccentricity or tilting during installation.
[0121] Sturdy structure and strong anti-detachment: Two L-shaped second magnet buckles set opposite each other can clamp and fix the magnet on both sides. Combined with the longitudinal limit of the I-shaped first magnet buckle at the top, the overall connection strength is significantly improved and the magnet is prevented from falling off.
[0122] Easy to disassemble and maintain: The snap-fit structure is reasonably designed, allowing for quick installation and replacement of magnets without the need for additional tools, thus improving maintenance efficiency.
[0123] Improve overall machine reliability: The magnet provides stable fixation and can effectively adsorb metal impurities in the washing water, reducing the risk of drainage system blockage and extending equipment life.
[0124] During implementation, such as Figure 3 As shown, the washing machine drain valve also includes a sealing ring 23, which is disposed between the contact surfaces of the drain end cover 2 and the drain port of the water inlet pipe to achieve a sealed connection between the drain end cover 2 and the drain port of the water inlet pipe and prevent water leakage.
[0125] The sealing ring is an annular structure, preferably made of rubber, silicone, or other elastic flexible materials, possessing good compression resilience and water resistance. The sealing ring can be embedded in the inner edge of the drain end cap or placed in a groove on the drain port end face of the inlet pipe, so that when the drain end cap is screwed onto the drain port, the sealing ring is compressed and undergoes elastic deformation, thereby forming a reliable sealing interface between the drain end cap and the inlet pipe.
[0126] In actual use, when the washing machine is draining, the washing water flows through the inlet pipe and into the dirt storage area. At this time, the drain cover is installed, and the sealing ring is tightly fitted between the two contact surfaces under the pressure, effectively preventing the washing water from leaking from the connection gap, thereby ensuring the safety and stability of the washing machine operation.
[0127] In addition, when users need to clean the impurities in the storage area, they only need to remove the drain end cap, and the sealing ring remains in place, which is convenient for reuse and avoids increased maintenance costs due to frequent replacement.
[0128] During implementation, such as Figures 1 to 3 As shown, the washing machine drain valve also includes:
[0129] Drain valve switch section;
[0130] The drain valve body 5 of the T-type three-way valve has the port of the vertical pipe of the drain valve body as the drain outlet 51, the water inlet port of the horizontal pipe of the drain valve body 5 is connected to the drain pipe 4, and the drain valve switch part blocks the water inlet port of the horizontal pipe of the drain valve body.
[0131] When the drain valve switch is pulled outward, the drain valve switch opens the water inlet port of the horizontal pipe of the drain valve body.
[0132] By controlling the opening and closing of the water inlet port of the horizontal pipe of the drain valve body through the drain valve switch, the drainage process can be opened and closed as needed, thereby improving the automation level of the whole machine.
[0133] Compact structure and high space utilization: The T-type three-way structure of the drain valve has a reasonable main body layout, which is easy to integrate with the existing drainage system, saves installation space, and has strong adaptability.
[0134] Excellent sealing performance: When the drain valve switch is closed, it can reliably seal the water inlet port of the horizontal pipe of the drain valve body, preventing washing water leakage and ensuring the safe operation of the washing machine.
[0135] During implementation, such as Figure 2 and Figure 3 As shown, the drain valve switch includes:
[0136] A spring and a rubber plug 61 with a through hole, the spring being fixed to the inner wall of the through hole of the rubber plug 61;
[0137] A piston 62 with a piston rod 63, the piston rod 63 passing through the central hole of the spring, and the piston 62 being engaged on the outside of one end of the through hole of the rubber stopper, and the open end of the piston rod protruding from the other end of the through hole of the rubber stopper;
[0138] A rubber stopper cap 65 with a through hole is connected to the transverse pipe thread 52 of the drain valve body, such that the piston 62 is blocked at the water inlet port of the transverse pipe of the drain valve body, and the open end of the piston rod extends out of the through hole of the rubber stopper cap 65.
[0139] Pull rod 66 is fixed to the open end of the piston rod.
[0140] The stopper is made of rubber or elastic material and has a cylindrical structure with a through hole in the middle. The spring is fixedly installed in the inner wall of the through hole of the stopper, preferably by injection molding, snap-fit or interference fit to achieve a firm connection. The spring extends axially and has a central hole through which the piston rod can pass to provide a restoring force for the piston assembly.
[0141] The piston is made of a material with a certain rigidity (such as plastic or metal), and one end of it is connected to a piston rod; the piston rod passes through the central hole of the spring and extends out from the through hole of the rubber stopper.
[0142] The piston diameter is larger than the diameter of the through hole of the rubber plug, so it is limited and locked on the outside of one end of the through hole of the rubber plug; the open end of the piston rod protrudes from the other end of the through hole of the rubber plug, which facilitates the subsequent connection of the pull rod.
[0143] When not subjected to external force, the piston, under the action of the spring, presses tightly against the horizontal pipe inlet port of the drain valve body, thus achieving a sealing function.
[0144] The rubber stopper cap is a cap-shaped component with a through hole, the inner diameter of which is adapted to the diameter of the piston rod. The rubber stopper cap is fixedly installed on the end of the transverse pipe of the drain valve body by a threaded connection. After assembly, the rubber stopper cap presses and positions the rubber stopper, spring and piston assembly, so that the piston is stably blocked at the water inlet port of the transverse pipe of the drain valve body; at the same time, the open end of the piston rod extends out from the through hole of the rubber stopper cap for connection to an external operating mechanism.
[0145] One end of the pull rod is fixedly connected to the open end of the piston rod, for example by means of threads, welding or snap-fit; when the user or the washing machine control system pulls the pull rod, it drives the piston to move backward, compresses the spring, and thus opens the drain channel.
[0146] After drainage is complete, release the lever, and under the restoring force of the spring, the piston will automatically return to its initial position and re-close the water inlet port.
[0147] During actual operation, when the washing machine starts the drainage program, the control system controls the actuator to pull the lever, the rubber plug is compressed, and the piston is driven away from the water inlet port, so that the washing water can flow from the water inlet pipe into the drain valve body and be discharged through the vertical pipe; when the drainage ends, the lever is released, the spring pushes the piston to reset, and the drainage channel is closed again to prevent the washing water from flowing back or leaking.
[0148] In the description of this application and its embodiments, it should be understood that the terms "top", "bottom", "height", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.
[0149] In this application and its embodiments, unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0150] In this application and its embodiments, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0151] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.
[0152] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.
[0153] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.
Claims
1. A drain valve for a washing machine, characterized in that, include: Water inlet pipe (1), the upper end of the water inlet pipe serves as the water inlet (11), and the lower end of the water inlet pipe serves as the sewage outlet; The drain end cap (2) is detachably connected to the drain port; Drainage pipe (4), one end of which is connected to the side of the water inlet pipe, and the part of the water inlet pipe located between the drain pipe and the sewage outlet of the water inlet pipe serves as a sewage storage area (12). The washing machine drain valve also includes: Drain valve switch section; The drain valve body (5) of the T-type three-way valve has the port of the vertical pipe of the drain valve body as the drain outlet (51), the water inlet port of the horizontal pipe of the drain valve body is connected to the drain pipe, and the drain valve switch part blocks the water inlet port of the horizontal pipe of the drain valve body. When the drain valve switch is pulled outward, the drain valve switch opens the water inlet port of the horizontal pipe of the drain valve body.
2. The washing machine drain valve according to claim 1, characterized in that, Also includes: A magnet (3) is fixed to the inner bottom of the drain end cap (2).
3. The washing machine drain valve according to claim 2, characterized in that, The length between the sewage outlet of the water inlet pipe and the drain pipe is greater than the length between the water inlet of the water inlet pipe and the drain pipe.
4. The washing machine drain valve according to claim 2, characterized in that, The ratio of the length between the sewage outlet of the water inlet pipe and the drainage pipe to the length between the water inlet pipe and the drainage pipe is greater than or equal to 1.2 and less than or equal to 2.
5. The washing machine drain valve according to claim 2, characterized in that, The lower end of the water inlet pipe has an external thread (13) for the drain end. The drain end cap (2) has internal threads; The internal thread of the drain end cap (2) and the external thread (13) of the drain end cooperate to achieve a threaded connection.
6. The washing machine drain valve according to claim 5, characterized in that, The inner bottom of the sewage discharge end cap is provided with multiple magnetic buckles; The magnet (3) is snapped into the space enclosed by each of the magnet clips.
7. The washing machine drain valve according to claim 6, characterized in that, The magnetic buckle is three in number and the three magnetic buckles are located at the three vertices of an isosceles triangle; The three magnetic buckles include an I-shaped first magnetic buckle (21) and two L-shaped second magnetic buckles (22). The I-shaped first magnetic buckle (21) is located at the apex between the two waists, and the two L-shaped second magnetic buckles (22) are located at the two ends of the bottom edge with the L-shaped openings facing each other.
8. The washing machine drain valve according to claim 2, characterized in that, It also includes a sealing ring (23), which is disposed between the contact surface of the drain end cap (2) and the drain port of the inlet pipe.
9. The washing machine drain valve according to claim 8, characterized in that, The drain valve switch includes: A spring and a rubber plug (61) with a through hole, the spring being fixed to the inner wall of the through hole of the rubber plug; A piston (62) with a piston rod (63) passing through the center hole of the spring, and the piston (62) being engaged on the outside of one end of the through hole of the rubber stopper, and the open end of the piston rod (63) protruding from the other end of the through hole of the rubber stopper (61); A rubber stopper cap (65) with a through hole is connected to the transverse pipe thread (52) of the drain valve body, such that the piston (62) blocks the water inlet port of the transverse pipe of the drain valve body, and the open end of the piston rod extends out of the through hole of the rubber stopper cap (65). The pull rod (66) is fixed to the open end of the piston rod.