Clothes treatment equipment and drainage assembly thereof

Abstract

The invention provides clothes treating equipment and a drainage assembly thereof. The drainage assembly comprises a drainage pump, a lower drainage pipe and a hydraulic stop valve, and the lower drainage pipe is connected with a water outlet of the drainage pump; the hydraulic stop valve is arranged on the lower drainage pipe and is used for controlling the on-off of the lower drainage pipe; and the hydraulic stop valve is configured to be opened by utilizing the pressure of water flow discharged by the drainage pump when the drainage pump is started to drain water, and is automatically closed in a delayed manner when the drainage pump stops draining water. The drainage assembly adopts a downward drainage mode, the drainage pump for providing power and the hydraulic stop valve for controlling on-off of the sewer pipe are arranged on the lower drainage pipe, and under the combined action of the drainage pump and the hydraulic stop valve, the purposes of increasing the drainage speed and reducing noise can be achieved; in addition, the purpose of draining residual water can be achieved through the delayed closing function of the hydraulic stop valve, the hydraulic stop valve does not need to be driven by electricity, and energy consumption of the clothes processing equipment cannot be increased.

Description

Technical Field

[0001] The present invention relates to the technical field of washing equipment, in particular to a clothing processing device and a drainage component thereof. Background Art

[0002] With the advancement of science and technology, people's living standards are getting higher and higher, and daily housework is gradually being replaced by machines instead of manual labor. As common household appliances in daily life, washing machines, shoe washers and other clothing processing equipment have brought great convenience to people's lives.

[0003] Currently, clothes processing equipment is mainly divided into pulsator-type and drum-type structures. The drum-type structure is increasingly favored by users due to its advantages such as less wear on clothes, saving water and electricity, and high space utilization.

[0004] Drum-type laundry processing equipment typically uses an upper drainage system, using a drain pump to drive the water. Because a drain pump only drives the water flow and lacks a flow cutoff function, the drain pipe is typically raised to a certain height before being lowered. This structure prevents the water from being completely drained.

[0005] Furthermore, at the end of the drain or spin cycle, when the drain pump runs low on water and there's no more water to drive it, the pump mixes with air, causing noticeably louder noise and requiring it to stop. When the pump stops, water in the raised drain pipe, near the pump, flows back into the pump. Depending on the pipe's inner diameter and the height it's lifted, this can leave around 400-600 ml of residual water. This water, which remains at the bottom of the outer tub for extended periods, creates a damp, dark environment inside, breeding bacteria and odors. This is also the root cause of odors when clothes are not removed promptly after washing.

[0006] In addition, some drum-type clothing processing equipment also uses downward drainage to drain water, that is, a drain valve is used to control the on and off of the drain pipe. However, the drain valve only has an opening and closing function and cannot drive the water flow. Therefore, the downward drainage method has a slow drainage speed and cannot meet the user's demand for products in the context of a faster pace of life.

[0007] Therefore, how to drain the residual water in the drain pipe and reduce the noise of the clothing processing equipment while still saving water and electricity and not increasing the washing time is a difficult problem that needs to be solved urgently for the drum-type clothing processing equipment.

[0008] In view of this, the present invention is proposed. Summary of the Invention

[0009] The technical problem to be solved by the present invention is to at least overcome some of the shortcomings of the existing technology, and provide a drainage component for a clothing processing equipment, which adopts the form of lower drainage. By arranging a drainage pump that provides power and a hydraulic stop valve that controls the opening and closing of the lower water pipe on the lower drainage pipe, under the joint action of the drainage pump and the hydraulic stop valve, it can not only achieve the purpose of accelerating drainage speed and reducing noise, but also utilize the delayed closing function of the hydraulic stop valve to achieve the purpose of draining residual water. Moreover, the hydraulic stop valve does not require electric drive and will not increase the energy consumption of the clothing processing equipment.

[0010] In order to solve the above technical problems, the present invention provides a drainage assembly of a clothes processing device, comprising:

[0011] Drain pump;

[0012] a lower drain pipe connected to the water outlet of the drain pump; and

[0013] A hydraulic stop valve is provided on the lower drain pipe for controlling the on / off state of the lower drain pipe; the hydraulic stop valve is configured to open when the drain pump starts draining, utilizing the water pressure discharged by the drain pump, and automatically delay closing when the drain pump stops draining.

[0014] In some embodiments, the hydraulic shut-off valve comprises:

[0015] A valve housing is provided with a water passage cavity and a valve cavity inside the valve housing, the upstream and downstream of the water passage cavity are respectively connected to the lower drain pipe, and a valve core is provided in the valve cavity;

[0016] a hydraulic cylinder assembly connected to the upper portion of the valve housing, wherein a piston assembly is disposed within the hydraulic cylinder assembly, wherein the piston assembly is connected to the valve core, wherein the piston assembly drives the valve core to move in a direction away from the water passage chamber under the action of the water flow pressure, so that the upstream and downstream of the water passage chamber are connected, and wherein the piston assembly and the valve core move in a direction toward the water passage chamber under the action of gravity, so that the valve core cuts off the upstream and downstream of the water passage chamber;

[0017] A connecting pipe has one end connected to the upstream of the water passage chamber and the other end connected to the hydraulic cylinder assembly.

[0018] In some embodiments, the hydraulic cylinder assembly includes a first cylinder body and a second cylinder body that are interconnected, and the diameter of the first cylinder body is larger than the diameter of the second cylinder body. The first cylinder body is connected to the connecting pipe, and the second cylinder body is connected to the valve housing.

[0019] The piston assembly includes a first piston and a second piston connected by a connecting rod, the first piston is configured to reciprocate in the first cylinder, the second piston is configured to reciprocate in the second cylinder, and the second piston is connected to the valve core.

[0020] In some embodiments, the second cylinder is in communication with the valve housing, and a clearance fit is formed between the first piston and the first cylinder, between the second piston and the second cylinder, and between the valve core and the valve housing.

[0021] In some embodiments, the hydraulic stop valve further includes a drain pipe, one end of which is connected to the pressure relief port on the upper portion of the hydraulic cylinder assembly, and the other end of which is connected to the valve housing.

[0022] In some embodiments, the valve housing includes a valve body and a water inlet pipe and a water outlet pipe connected to the valve body, and the connecting pipe is connected to the water inlet pipe;

[0023] Part of the inner cavity of the valve body constitutes the valve cavity, and the remaining inner cavity of the valve body and the inner cavities of the water inlet pipe and the water outlet pipe constitute the water flow cavity. In the movement direction of the valve core, the bottom wall of the valve body is lower than the bottom wall of the water inlet pipe.

[0024] In some embodiments, the valve body includes a valve body and a valve cover disposed at one end of the valve body;

[0025] The valve body includes a cylindrical section and a frustum section, and the valve cover is connected to the top of the cylindrical section;

[0026] Wherein, the valve core is in a frustum shape, and when the hydraulic stop valve is closed, the valve core and the frustum segment form a sealing structure.

[0027] In some embodiments, a filter is provided at one end of the connecting pipe that is in communication with the upstream side of the water passage chamber.

[0028] In some embodiments, the valve core is made of flexible material.

[0029] The present invention also provides a clothes processing device, comprising a water container and the drainage assembly of the clothes processing device;

[0030] The water container is connected to the water inlet of the drainage pump via a water diversion pipe.

[0031] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0032] (1) The drainage assembly of the clothing processing equipment provided by the present invention adopts the form of downward drainage. By arranging a drainage pump that provides power and a hydraulic stop valve that controls the opening and closing of the downward drainage pipe on the downward drainage pipe, the drainage pump and the hydraulic stop valve work together to achieve the purpose of accelerating drainage speed and reducing noise. In addition, the delayed closing function of the hydraulic stop valve can be used to drain the residual water. Moreover, the hydraulic stop valve does not require electric drive and will not increase the energy consumption of the clothing processing equipment.

[0033] (2) The drainage assembly of the clothing processing equipment provided by the present invention has a high degree of integration and can be directly modified on existing products, which is easy to implement and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the accompanying drawings:

[0035] Figure 1 is a schematic structural diagram of a clothes treating apparatus according to an exemplary embodiment of the present invention;

[0036] Figure 2 is a schematic diagram of a hydraulic shut-off valve in a closed state according to an exemplary embodiment of the present invention;

[0037] Figure 3 FIG. 1 is a schematic diagram of a hydraulic shut-off valve in an open state according to an exemplary embodiment of the present invention.

[0038] In the figure: 10. Clothes processing equipment;

[0039] 100, housing; 110, door;

[0040] 200, outer cylinder; 210, water diversion pipe; 220, inner cylinder; 230, drive unit;

[0041] 300, drainage assembly; 310, drainage pump; 320, lower drainage pipe; 321, first section of the lower drainage pipe; 322, second section of the lower drainage pipe; 330, hydraulic stop valve; 331, valve housing; 3311, valve body; 33111, valve body; 331111, cylindrical section; 331112, frustum section; 33112, valve cover; 33113, reinforcement; 3312, water inlet pipe; 3313, water outlet pipe; 3314, annular rib; 3 316, second connecting joint; 3318, fourth connecting joint; 332, hydraulic cylinder assembly; 3321, first cylinder body; 33211, first connecting joint; 33212, third connecting joint; 3322, second cylinder body; 333, piston assembly; 3331, first piston; 3332, second piston; 3333, first connecting column; 3334, second connecting column; 334, valve core; 335, connecting pipe; 336, drain pipe.

[0042] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0044] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0045] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0046] Figure 1The following is a schematic diagram of the structure of a laundry processing device 10 provided according to an exemplary embodiment of the present invention. The diagram uses a drum washing machine as an example. To clearly illustrate the principles of the present invention, some components unrelated to the present invention, such as the suspension device, counterweight, water inlet assembly, dispenser box, and display device, are not shown and are partially cut away. The laundry processing device 10 may also be a drum washer-dryer, shoe washer, or the like, without limitation to this invention.

[0047] like Figure 1 As shown, the laundry processing device 10 includes a housing 100 and an outer drum 200 and an inner drum 220 disposed within the housing 100. A laundry inlet and a door 110 for opening and closing the laundry inlet are provided on the front side of the housing 100. The door 110 is provided with an observation window, and a sealing window gasket is provided between the laundry inlet and the outer drum 200. The inner drum 220 is connected to a drive unit 230 for driving the inner drum 220 to rotate. The outer drum 200 is the water storage drum of the laundry processing device 10. The outer drum 200 is connected to a drainage assembly 300 for draining water from the outer drum 200. The drainage assembly 300 adopts a lower drainage structure.

[0048] Specifically, the drainage assembly 300 includes a drainage pump 310, a lower drainage pipe 320, and a hydraulic shut-off valve 330. The water inlet of the drainage pump 310 is connected to the outer cylinder 200 via the water diversion pipe 210, and the water outlet of the drainage pump 310 is connected to the lower drainage pipe 320. The hydraulic shut-off valve 330 is disposed on the lower drainage pipe 320 and is used to control the on / off state of the lower drainage pipe 320. The hydraulic shut-off valve 330 divides the lower drainage pipe 320 into a first section of the lower drainage pipe 321 and a second section of the lower drainage pipe 322. The first section of the lower drainage pipe 321 is located between the water outlet of the drainage pump 310 and the water inlet of the hydraulic shut-off valve 330. One end of the second section of the lower drainage pipe 322 is connected to the water outlet of the hydraulic shut-off valve 330, and the other end is configured to be connected to a drainage facility such as a floor drain. The hydraulic stop valve 330 is configured to open by utilizing the pressure of the water discharged by the drainage pump 310 when the drainage pump 310 starts drainage, and automatically close with a delayed time when the drainage pump 310 stops drainage.

[0049] Specifically, when the laundry processing apparatus 10 is in the water filling, washing, or rinsing phase, the water pressure in the lower drain pipe 320 is insufficient to open the hydraulic shut-off valve 330. The hydraulic shut-off valve 330 closes, shutting off the water flow in the lower drain pipe 320. When the laundry processing apparatus 10 is in the early stages of the draining phase, the amount of water in the outer tub 200 is high, and the drain pump 310 is activated to drain the water. The water in the outer tub 200 has a high water pressure after passing through the drain pump 310, causing the hydraulic shut-off valve 330 to open under the action of the water pressure, connecting the first and second sections of the drain pipe 321, 322 of the lower drain pipe 320. When the laundry processing apparatus 10 is in the late stages of the draining phase or the spin phase, the amount of water in the outer tub 200 is low, and the drain pump 310 is turned off. Due to the low water pressure at this time, the hydraulic shut-off valve 330 automatically closes, shutting off the first and second sections of the drain pipe 321, 322 of the lower drain pipe 320. However, the hydraulic stop valve 330 has a delayed closing function. Therefore, during the delayed closing time, the water in the outer cylinder 200 and the lower drain pipe 320 will continue to be discharged to avoid residual water in the outer cylinder 200 and the lower drain pipe 320.

[0050] In the above solution, during the early stages of the draining phase of the laundry processing apparatus 10, the drain pump 310 is used to quickly drain the bulk of the water from the outer drum 200. During the later stages of the draining phase and the dehydration phase, the smaller amount of water in the outer drum 200 is naturally drained by the force of gravity and the delayed closing of the hydraulic shut-off valve 330. This prevents the increased noise of the drain pump 310 caused by air mixing when the water level is low. Furthermore, shutting down the drain pump 310 during this phase also reduces energy consumption. Furthermore, the hydraulic shut-off valve 330 does not require electrical power and does not increase the energy consumption of the laundry processing apparatus 10. This solves the problem of draining residual water from the drain pipe and reducing noise from the laundry processing apparatus 10 while still conserving water and electricity.

[0051] It should be noted that during the drainage process, the control unit of the clothing processing device 10 can obtain the water level in the outer drum 200 through detection elements such as a water level sensor. When the amount of water in the outer drum 200 is less than a predetermined water level threshold, the control unit can issue a control instruction to control the drainage pump 310 to stop running. The above-mentioned water level threshold can be data obtained by technicians through a large number of tests and studies, and is stored in the control unit of the clothing processing device 10 before the clothing processing device 10 leaves the factory. As an example, the water level threshold can be set to the height of the water inlet of the drainage pump 310 to prevent the drainage pump 310 from inhaling air. In another embodiment, it can be determined whether to turn off the drainage pump 310 by monitoring the power change of the drainage motor during the drainage process. When the water level drops to the drainage pump 310, the drainage pump impeller is converted from driving water to a mixture of driving water and air, the load is reduced, and the corresponding output power is reduced.

[0052] In addition, the delayed closing time of the hydraulic stop valve 330 should not exceed the minimum dehydration cycle time of the clothes treating apparatus 10 to prevent water leakage when water is re-entered after dehydration.

[0053] It should be noted that the drainage pump 310 may adopt a structure commonly used in the art, and the present invention does not impose any limitation on this.

[0054] Figure 2 and Figure 3 The structures of the hydraulic stop valve 330 in the closed state and the open state are shown respectively according to an exemplary embodiment of the present invention. Figure 2 and Figure 3 The structure of the hydraulic stop valve 330 is described in detail.

[0055] like Figure 2 and Figure 3 As shown, the hydraulic shut-off valve 330 includes a valve housing 331, a hydraulic cylinder assembly 332, and a connecting pipe 335. The valve housing 331 defines a water flow chamber and a valve chamber. The upstream and downstream ends of the water flow chamber are connected to the first and second sections of the downpipe 321, 322 of the downpipe 320, respectively. A valve core 334 is disposed within the valve chamber. The hydraulic cylinder assembly 332 is connected to the top of the valve housing 331 and contains a piston assembly 333. The piston assembly 333 is connected to the valve core 334. Under the action of water pressure, the piston assembly 333 drives the valve core 334 away from the water flow chamber, thereby connecting the upstream and downstream ends of the water flow chamber. Furthermore, under the action of gravity, the piston assembly 333 and the valve core 334 move toward the water flow chamber, causing the valve core 334 to block the upstream and downstream ends of the water flow chamber. One end of the connecting pipe 335 is connected to the upstream of the water passage chamber, and the other end is connected to the hydraulic cylinder assembly 332 .

[0056] Specifically, when the drainage pump 310 is started, the water with a large water pressure after the drainage pump 310 flows through the first section of the downpipe 321 to the water cavity of the hydraulic stop valve 330. Figure 2 , water can only enter the hydraulic cylinder assembly 332 of the hydraulic stop valve 330 through the connecting pipe 335. The piston assembly 333 inside the hydraulic cylinder assembly 332 moves upward under the action of water pressure, and at the same time drives the valve core 334 to move upward. After the valve core 334 moves, the upstream and downstream of the water chamber are connected, refer to Figure 3The water flows out of the clothes processing device 10 through the second downpipe 322. Moreover, when the water flows through the water cavity, it also generates an upward lifting force on the valve core 334, prompting the valve core 334 to move upward, thereby reducing the opening time of the hydraulic stop valve 330 and thus shortening the drainage time.

[0057] When drain pump 310 stops operating, the water pressure after drain pump 310 is low and insufficient to support the weight of piston assembly 333 and valve core 334, causing piston assembly 333 and valve core 334 to move downward. Since a large amount of water still remains within the inner cavity of hydraulic cylinder assembly 332, piston assembly 333 and valve core 334 do not instantly move downward to close the water passage chamber. Instead, they slowly descend and reset as the amount of water within the inner cavity of hydraulic cylinder assembly 332 decreases. The water within the inner cavity of hydraulic cylinder assembly 332 enters first section downpipe 321 through connecting pipe 335 and, along with the incoming water from drain pump 310, is discharged through the water passage chamber and second section downpipe 322.

[0058] It should be noted that the hydraulic cylinder assembly 332 should be provided with a pressure relief port to balance the air pressure inside and outside the inner cavity of the hydraulic cylinder assembly 332, thereby preventing the piston assembly 333 from being unable to move up and down due to air pressure imbalance. In some embodiments, to prevent water from flowing out of the inner cavity of the hydraulic cylinder assembly 332 through the pressure relief port and causing water leakage, the hydraulic shut-off valve 330 also includes a drain pipe 336. One end of the drain pipe 336 is connected to the pressure relief port on the upper portion of the hydraulic cylinder assembly 332, and the other end is connected to the valve housing 331. When the water level in the inner cavity of the hydraulic cylinder assembly 332 reaches the pressure relief port, the water in the inner cavity of the hydraulic cylinder assembly 332 flows into the interior of the valve housing 331 through the drain pipe 336, preventing the hydraulic shut-off valve 330 from leaking. The drain pipe 336 can be connected to the water passage chamber of the valve housing 331 or to the valve chamber of the valve housing 331.

[0059] In some embodiments, a filter is provided at one end of the connecting pipe 335 that communicates with the upstream end of the water passage chamber. This filter is used to remove lint from the water flow and prevent it from entering the inner cavity of the hydraulic cylinder assembly 332. Furthermore, when the drain pump 310 stops operating, water from the inner cavity of the hydraulic cylinder assembly 332 flows out through the connecting pipe 335, flushing the lint from the filter. Therefore, the filter provided on the connecting pipe 335 will not become clogged, eliminating the need for manual cleaning.

[0060] In some embodiments, the valve core 334 is made of a flexible material such as rubber or silicone. Even if there are some wire scraps attached to the water cavity, the deformable characteristics of the valve core 334 can be used to achieve sealing and prevent water leakage.

[0061] In some embodiments, the hydraulic cylinder assembly 332 includes a first cylinder body 3321 and a second cylinder body 3322 that are connected vertically. The diameter of the first cylinder body 3321 is larger than the diameter of the second cylinder body 3322. The first cylinder body 3321 is connected to the connecting pipe 335, and the second cylinder body 3322 is connected to the valve housing 331. The piston assembly 333 includes a first piston 3331 and a second piston 3332 connected by a first connecting post 3333. The first piston 3331 is configured to reciprocate within the first cylinder body 3321, and the second piston 3332 is configured to reciprocate within the second cylinder body 3322. The second piston 3332 is connected to the valve core 334 via a second connecting post 3334.

[0062] Specifically, the area of ​​the first piston 3331 is larger than the area of ​​the second piston 3332. Therefore, the pressure generated by the water flow entering the first cylinder body 3321 and the second cylinder body 3322 on the first piston 3331 is correspondingly greater than the pressure generated on the second piston 3332. Driven by the greater pressure, the first piston 3331 moves upward, while driving the second piston 3332 and the valve core 334 to move upward.

[0063] Furthermore, the second cylinder 3322 is in communication with the valve housing 331 , and clearance fit is formed between the first piston 3331 and the first cylinder 3321 , between the second piston 3332 and the second cylinder 3322 , and between the valve core 334 and the valve housing 331 .

[0064] In detail, when the drainage pump 310 stops running, the water in the first cylinder 3321 and the second cylinder 3322 can not only be discharged through the connecting pipe 335, but also be discharged through the gap between the first piston 3331 and the first cylinder 3321, between the second piston 3332 and the second cylinder 3322, and between the valve core 334 and the valve housing 331, thereby preventing water from remaining in the first cylinder 3321 and the second cylinder 3322.

[0065] Furthermore, the clearance fit between the first piston 3331 and the first cylinder body 3321, between the second piston 3332 and the second cylinder body 3322, and between the valve core 334 and the valve housing 331 can reduce manufacturing precision and significantly lower manufacturing costs. Furthermore, these gaps are filled with pressurized water upon entry, acting as a lubricant, eliminating the need for additional lubricating oil as is required in conventional hydraulic cylinders. This reduces operational resistance to the piston and valve core 334, allowing the hydraulic shut-off valve 330 provided by the present invention to open more sensitively.

[0066] In another embodiment, the second piston 3332 can be eliminated, and the first connecting column 3333 and the second connecting column 3334 can be thickened to achieve a clearance fit with the second cylinder body 3322, which can also achieve the above-mentioned function.

[0067] It should be noted that the gaps between the first piston 3331 and the first cylinder 3321, between the second piston 3332 and the second cylinder 3322, and between the valve core 334 and the valve housing 331 can be determined based on the dehydration time of the laundry processing device 10 to ensure that water inside the first cylinder 3321 and the second cylinder 3322 completely leaks out within the minimum dehydration cycle of the laundry processing device 10. This ensures that after the main wash, when water is replenished for rinsing, there will be no accidental leakage. For example, if the minimum dehydration cycle of a laundry processing device 10 using this hydraulic stop valve 330 is 2 minutes, then the time it takes for the first cylinder 3321 and the second cylinder 3322 to completely leak out cannot exceed 2 minutes.

[0068] In some embodiments, the valve housing 331 includes a valve body 3311 and a water inlet pipe 3312 and a water outlet pipe 3313 connected to the valve body 3311. The connecting pipe 335 is connected to the water inlet pipe 3312. Part of the inner cavity of the valve body 3311 constitutes the valve cavity, while the remaining inner cavity of the valve body 3311 and the inner cavities of the water inlet pipe 3312 and the water outlet pipe 3313 constitute the water passage cavity. In the direction of movement of the valve core 334, the bottom wall of the valve body 3311 is lower than the bottom wall of the water inlet pipe 3312.

[0069] Furthermore, the valve body 3311 includes a valve body 33111 and a valve cover 33112 disposed at one end of the valve body 33111. The second cylinder 3322 can be connected to the valve cover 33112. Optionally, the valve cover 33112 and the valve body 33111 are connected by a threaded connection. The valve body 33111 includes a cylindrical section 331111 and a frustum section 331112, and the valve cover 33112 is connected to the top of the cylindrical section 331111. The valve core 334 is frustum-shaped. When the hydraulic shut-off valve 330 is closed, the valve core 334 and the frustum section 331112 cooperate through their conical surfaces to form a reliable seal.

[0070] Specifically, the valve body 33111 consists of two sections. The upper section of the valve body 33111 is a cylindrical section 331111, the end of which can be threaded to connect with the valve cover 33112. The lower section of the valve body 33111 is a frustoconical section 331112. The conical surface inside the frustoconical section 331112 creates a perfect seal with the conical surface of the valve core 334. The valve body 33111 is also connected to an inlet pipe 3312 and an outlet pipe 3313. The inlet pipe 3312 is connected to the first section of the downpipe 321, and the outlet pipe 3313 is connected to the second section of the downpipe 322. One end of the connecting pipe 335 is connected to the side wall of the inlet pipe 3312. The opening of the water inlet pipe 3312 on the valve body 33111 is higher than the opening of the water outlet pipe 3313 on the valve body 33111. More specifically, the opening of the water outlet pipe 3313 on the valve body 33111 is flush with the bottom wall of the valve body 33111. This ensures that after drainage is complete, no water accumulates within the valve body 33111. Furthermore, the staggered heights of the water inlet pipe 3312 and the water outlet pipe 3313 ensure that even if debris such as lint remains on the bottom wall of the valve body 33111, it will not affect the valve core 334's ability to descend and seal against the inner circumferential wall of the valve body 33111. This significantly improves the reliability of the hydraulic stop valve 330.

[0071] During manufacturing, the valve cover 33112 can be formed in one step by injection molding or other processes. For the valve body 33111, the water inlet pipe 3312 and the water outlet pipe 3313, the valve body 33111, the water inlet pipe 3312 and the water outlet pipe 3313 can be formed in one step by injection molding or other processes. Figure 2 and Figure 3 The cross-sectional structure shown is that the valve body 33111 and the water inlet pipe 3312 and the water outlet pipe 3313 are injection molded into two identical parts, and then the two parts are welded into one part through a cladding process.

[0072] In order to firmly install the second cylinder body 3322, a conical reinforcement portion 33113 with a through hole in the middle is provided on the valve cover 33112. The second cylinder body 3322 can be connected to the through hole of the conical reinforcement portion 33113 through threads, or the second cylinder body 3322 can be directly processed into a component by in-mold injection molding when the valve cover 33112 is injection molded.

[0073] As an example, a first connection joint 33211 is provided on the side wall of the first cylinder 3321, a second connection joint 3316 is provided on the wall of the water inlet pipe 3312, and the ends of the connecting pipe 335 are respectively connected to the first connection joint 33211 and the second connection joint 3316. A third connection joint 33212 is also provided on the pressure relief port of the first cylinder 3321, and a fourth connection joint 3318 is provided on the valve cover 33112. The ends of the discharge pipe 336 are respectively connected to the third connection joint 33212 and the fourth connection joint 3318. This makes the pipeline connection more reliable, facilitates the integration of the hydraulic stop valve 330, and facilitates assembly and production.

[0074] In addition, an annular rib 3314 is provided on the outer wall of the water inlet pipe 3312 and the water outlet pipe 3313. During installation, after the water inlet pipe 3312 and the water outlet pipe 3313 are respectively inserted into the first section of the downpipe 321 and the second section of the downpipe 322, a pipe clamp is used to clamp the annular rib 3314 around the outer periphery, so that the water inlet pipe 3312 and the water outlet pipe 3313 can be firmly and reliably connected to the first section of the downpipe 321 and the second section of the downpipe 322.

[0075] Refer again below Figure 2 and Figure 3 The working principle of the hydraulic stop valve 330 is introduced in detail.

[0076] In the initial state, if Figure 2 As shown, the valve core 334 naturally returns to its original position under the action of gravity. The valve core 334 falls to a position where it does not contact the bottom wall of the valve body 33111, sealing the opening of the water inlet pipe 3312 in the valve body 33111, thereby cutting off the drainage path of the lower drain pipe 320. When water enters the laundry processing device 10, it can ensure normal water storage for the main wash and rinse cycles. It should be noted that by properly configuring the overall weight of the first piston 3331, the second piston 3332, and the valve core 334, the valve core 334 is ensured not to be triggered to rise even when the water level in the outer drum 200 is at its highest.

[0077] When drainage is required, Figure 3 As shown, when the drainage pump 310 is started, the water pressure in the first section of the sewer pipe 321 rises immediately, and the water flows along the water inlet pipe 3312 and the connecting pipe 335 into the first cylinder body 3321, prompting the first piston 3331 and the second piston 3332 to drive the valve core 334 to rise as a whole, thereby opening the drainage passage. After the drainage passage is opened, although the water pressure drops, it will not drop because the water flow supports the bottom of the valve core 334, and the water can still be drained normally.

[0078] When drainage is complete and dehydration begins, due to insufficient water, no pressurized water is injected into first cylinder 3321. However, since most of first cylinder 3321 and a small portion of second cylinder 3322 are filled with water, the valve core 334 slowly descends as the water leaks out, significantly delaying the closure of the drainage passage. This eliminates the need to activate drain pump 310 during dehydration, allowing the dehydrated water to flow naturally. This prevents water from accumulating near drain pump 310 and eliminates the loud noise generated by drain pump 310 discharging the water-vapor mixture when drainage is insufficient, significantly reducing noise during the dehydration phase.

[0079] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments using the above technical content without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A drainage assembly for a clothes processing device, characterized in that: include; Drain pump; a lower drain pipe connected to the water outlet of the drain pump; as well as A hydraulic stop valve is provided on the lower drain pipe and is used to control the on-off of the lower drain pipe; The hydraulic stop valve is configured to open by utilizing the water pressure discharged by the drainage pump when the drainage pump starts to drain, and automatically delay closing when the drainage pump stops to drain.

2. The drainage assembly of the clothes processing equipment according to claim 1, characterized in that: The hydraulic stop valve comprises: A valve housing is provided with a water passage cavity and a valve cavity inside the valve housing, the upstream and downstream of the water passage cavity are respectively connected to the lower drain pipe, and a valve core is provided in the valve cavity; a hydraulic cylinder assembly connected to the upper portion of the valve housing, wherein a piston assembly is disposed within the hydraulic cylinder assembly, wherein the piston assembly is connected to the valve core, wherein the piston assembly drives the valve core to move in a direction away from the water passage chamber under the action of the water flow pressure, so that the upstream and downstream of the water passage chamber are connected, and wherein the piston assembly and the valve core move in a direction toward the water passage chamber under the action of gravity, so that the valve core cuts off the upstream and downstream of the water passage chamber; A connecting pipe has one end connected to the upstream of the water passage chamber and the other end connected to the hydraulic cylinder assembly.

3. The drainage assembly of the clothes processing equipment according to claim 2, characterized in that: The hydraulic cylinder assembly includes a first cylinder body and a second cylinder body that are interconnected, wherein the diameter of the first cylinder body is larger than the diameter of the second cylinder body, the first cylinder body is connected to the connecting pipe, and the second cylinder body is connected to the valve housing; The piston assembly includes a first piston and a second piston connected by a connecting column, the first piston is configured to reciprocate in the first cylinder, the second piston is configured to reciprocate in the second cylinder, and the second piston is connected to the valve core.

4. The drainage assembly of the clothes processing equipment according to claim 3, characterized in that: The second cylinder is in communication with the valve housing, and clearance fit is formed between the first piston and the first cylinder, between the second piston and the second cylinder, and between the valve core and the valve housing.

5. The drainage assembly of the laundry processing apparatus according to any one of claims 2 to 4, characterized in that: The hydraulic stop valve further includes a drain pipe, one end of which is connected to the pressure relief port on the upper portion of the hydraulic cylinder assembly, and the other end of which is connected to the valve housing.

6. The drainage assembly of the laundry processing apparatus according to any one of claims 2 to 4, characterized in that: The valve housing includes a valve body and a water inlet pipe and a water outlet pipe connected to the valve body, and the connecting pipe is connected to the water inlet pipe; Part of the inner cavity of the valve body constitutes the valve cavity, and the remaining inner cavity of the valve body and the inner cavities of the water inlet pipe and the water outlet pipe constitute the water flow cavity. In the movement direction of the valve core, the bottom wall of the valve body is lower than the bottom wall of the water inlet pipe.

7. The drainage assembly of the clothes processing equipment according to claim 6, characterized in that: The valve body comprises a valve body and a valve cover arranged at one end of the valve body; The valve body includes a cylindrical section and a frustum section, and the valve cover is connected to the top of the cylindrical section; Wherein, the valve core is in a frustum shape, and when the hydraulic stop valve is closed, the valve core and the frustum segment form a sealing structure.

8. The drainage assembly of the laundry processing apparatus according to any one of claims 2 to 4, characterized in that: A filter screen is provided at one end of the connecting pipe that is in communication with the upstream of the water passage chamber.

9. The drainage assembly of the laundry processing apparatus according to any one of claims 2 to 4, characterized in that: The valve core is made of flexible material.

10. A clothes processing device, characterized in that: comprising a water container and a drainage assembly of the laundry processing apparatus according to any one of claims 1 to 9; The water container is connected to the water inlet of the drainage pump via a water diversion pipe.

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