Drainage structure of washing machine

Abstract

The present invention belongs to the technical field of washing machines, and specifically relates to a drainage structure of a washing machine, comprising an inner barrel and an outer barrel, a main shaft is provided at the bottom of the inner barrel, the main shaft passes through the outer barrel, and the main shaft and the outer barrel are rotatably sealed and connected, a guide groove is provided on the wall of the inner barrel, a drainage port is provided at the bottom, a switchable drainage valve is provided correspondingly below the drainage port, a drainage pipe is provided at the bottom of the outer barrel, a pressure plate which can slide up and down is sleeved on the main shaft, a directional key is connected between the pressure plate and the main shaft, a supporting rod is connected between the pressure plate and the drainage valve, a supporting wheel which is in rolling contact with the pressure plate is provided below the pressure plate, a lever is provided below the pressure plate, a supporting wheel is provided in the middle of the lever, a pillar is connected at the right end, an elastic telescopic arm is connected at the left end, and a traction rope is movably passed through the middle of the elastic telescopic arm; the inner barrel is directly drained from the bottom and flushed out through the drainage pipe of the outer barrel, and there is no water in the outer barrel during the washing process, which solves the problem of dirt and grime hidden in the interlayer between the inner and outer barrels of the traditional washing machine, and is beneficial to protecting clothes and human health.

Description

Technical Field

[0001] The invention belongs to the technical field of washing machines, and in particular relates to a drainage structure of a washing machine. Background Art

[0002] A washing machine is a cleaning appliance that uses electrical energy to generate mechanical action to wash clothes. It is divided into two categories according to its rated washing capacity: household and collective use. Mechanical force, detergent and water are the three major elements in washing machines. Energy saving and water saving, product functions, and green health are the three major directions of the development of washing machine technology. At present, whether it is a pulsator washing machine or a drum washing machine, it is generally composed of an inner barrel and an outer barrel. There is a layer between the inner and outer barrels. The gap between the layer is narrow and hidden, and it is difficult to clean the inside of the layer in time. The layer is also the only way for the washing machine to drain water, so it is easy to hide dirt and breed bacteria, posing certain safety hazards to clothes and human health. Now some washing machines have also made some technical improvements to the drainage structure, but they still cannot completely solve this technical problem. Summary of the invention

[0003] In view of the above situation, the present invention provides a drainage structure for a washing machine, in which a drainage valve is arranged at the bottom of a fully enclosed inner barrel. During the washing process, there is no water in the outer barrel. During drainage and spin-drying, water directly enters the outer barrel through the drainage port at the bottom of the inner barrel, and then is flushed out through the drainage pipe at the bottom of the outer barrel, thereby completely solving the problem of interlayer contamination that is common in existing washing machines.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solution:

[0005] A washing machine drainage structure comprises an inner barrel and an outer barrel of the washing machine, wherein the bottom of the inner barrel is coaxially connected with a main shaft, the main shaft coaxially passes through the bottom of the outer barrel, and the main shaft and the outer barrel are rotatably sealed and connected, the barrel mouth diameter of the inner barrel is smaller than the barrel bottom diameter, a plurality of guide grooves are arranged on the inner barrel wall, an annular filter is arranged on the bottom edge of the inner barrel, the annular filter forms an annular water collection channel with the inner barrel wall and the inner barrel bottom, at least one drainage port is arranged on the bottom edge of the inner barrel, the annular water collection channel is communicated with the drainage port, a switchable drainage valve is arranged correspondingly below the drainage port, a drainage pipe is arranged at the bottom of the outer barrel, a coaxial sleeve on the main shaft is provided with a switchable A pressure plate that slides up and down, the pressure plate and the main shaft are connected by a directional key, a support rod is correspondingly connected between the outer side of the pressure plate and the drain valve, a support wheel is arranged under the pressure plate to be in rolling contact with the pressure plate, a lever is arranged under the pressure plate without contact, the support wheel is rotatably arranged in the middle of the lever, the right end of the lever is connected to a pillar, and the left end is connected to an elastic telescopic arm, the lower end of the pillar is fixedly connected to the outer barrel, and the upper end is rotatably hinged to the lever, the lower end of the elastic telescopic arm is connected to the outer barrel, and the upper end is connected to the lever, a traction rope is movably passed through the middle of the elastic telescopic arm, and the upper end of the traction rope is connected to the left end of the lever.

[0006] Furthermore, a drainage motor is provided at the bottom of the outer barrel, a motor shaft of the drainage motor is connected to a rope winding wheel, and the lower end of the traction rope is connected to the rope winding wheel.

[0007] Furthermore, the traction rope is made of stainless steel wire rope, which has high mechanical strength, good corrosion resistance and long service life.

[0008] Furthermore, when there are multiple drainage openings, the multiple drainage openings are evenly distributed along the circumference of the bottom of the inner barrel, and the drainage openings are preferably circular through holes.

[0009] Further, the drain valve is a sealing plug matched with the drain port, the active surface of the sealing plug is made of rubber material, and the sealing plug is a disc-shaped plug.

[0010] Furthermore, the pressure plate is a horizontal flat disc, a central portion of which is provided with a sleeve slidably connected to the main shaft, key slots are correspondingly provided on the sleeve and the main shaft, and a flat key is matched in the key slot.

[0011] Furthermore, the elastic telescopic arm is a rubber telescopic sleeve, and a stainless steel self-resetting elastic compression spring is arranged inside the rubber telescopic sleeve, which has good corrosion resistance, long service life, and stable and reliable resetting elastic force.

[0012] Furthermore, a core shaft is provided in the middle of the lever, and the support wheel is rotatably connected to the lever via the core shaft.

[0013] The present invention also includes other components that enable it to be used normally, all of which are conventional means in the field. In addition, devices or components not limited in the present invention, such as: the inner barrel guide groove of the washing machine, the main shaft rotating seal and its clutch and brake, all adopt the existing technology in the field.

[0014] The beneficial effects of the present invention are as follows:

[0015] The present invention provides a washing machine drainage structure, which, through reasonable structural design and in conjunction with the design of the tapered barrel body and guide groove of the washing machine, realizes direct bottom drainage of the inner barrel and then flushes out through the outer barrel drainage pipe, thereby effectively solving the problem that the inner and outer barrel walls and interlayers of traditional washing machines are prone to dirt and bacteria breeding, and is beneficial to protecting clothes and human health. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the washing machine drainage structure in the embodiment when the drainage valve is in an open state.

[0017] Figure 2 It is a structural schematic diagram of the washing machine drainage structure in the embodiment when the drainage valve is in a closed state. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments.

[0019] It should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inside", "outside", "middle", etc. are based on the drawings and are for the convenience of description only.

[0020] Example

[0021] like Figure 1-2As shown, a drainage structure of a washing machine includes an inner barrel 1 and an outer barrel 2 of the washing machine, the bottom of the inner barrel is coaxially connected with a main shaft 3, the main shaft coaxially passes through the bottom of the outer barrel, and the main shaft and the outer barrel are rotatably sealed and connected, the barrel mouth diameter of the inner barrel is smaller than the barrel bottom diameter, a plurality of guide grooves 4 are arranged on the inner barrel wall, an annular filter screen 19 is arranged on the bottom edge of the inner barrel, the annular filter screen forms an annular water collection channel with the inner barrel wall and the inner barrel bottom, a drainage port 5 is arranged on the bottom edge of the inner barrel, the annular water collection channel is connected with the drainage port, a switchable drainage valve 6 is arranged correspondingly below the drainage port, a drainage pipe 7 is arranged at the bottom of the outer barrel, and a coaxial sleeve on the main shaft is provided with a valve that can be moved up and down A sliding pressure plate 8, wherein the pressure plate and the main shaft are connected by a directional key, a support rod 9 is correspondingly connected between the outer side of the pressure plate and the drain valve, a support wheel 10 is arranged below the pressure plate in rolling contact with the pressure plate, a lever 11 is arranged below the pressure plate in a non-contact manner, the support wheel is rotatably arranged in the middle of the lever, a pillar 12 is connected to the right end of the lever, and an elastic telescopic arm 13 is connected to the left end, the lower end of the pillar is fixedly connected to the outer barrel, and the upper end is rotatably hinged to the lever, the lower end of the elastic telescopic arm is connected to the outer barrel, and the upper end is connected to the lever, a traction rope 14 is movably passed through the middle of the elastic telescopic arm, and the upper end of the traction rope is connected to the left end of the lever.

[0022] A drainage motor 15 is provided at the bottom of the outer barrel, and a rope reel 16 is connected to the motor shaft of the drainage motor, and the lower end of the traction rope is connected to the rope reel.

[0023] The traction rope is made of stainless steel wire rope, which has high mechanical strength, strong corrosion resistance, and is strong and durable. In view of the humid operating environment of the drainage structure, the use of stainless steel material is more helpful to extend the service life.

[0024] Two circular drain ports are symmetrically arranged on the bottom edge of the inner barrel, which is beneficial to the balance of the main shaft rotation. The support rod and the pressure plate are connected by bolts, which is convenient for the maintenance and replacement of the support rod and the drain valve.

[0025] The drain valve is a sealing plug that matches the drain port. The active surface of the sealing plug is made of rubber material. The sealing plug is a disc-shaped plug. When it is raised, it can block the drain port to prevent water from flowing out of the inner barrel. When it is lowered, it can release the drain port, and the water will be discharged from the inner barrel to the outer barrel and then discharged through the drain pipe.

[0026] The pressure plate is a horizontal flat disc, the center of which is provided with a sleeve slidably connected to the main shaft. The sleeve and the main shaft are provided with key slots correspondingly, and a flat key 17 is provided in the key slot. During normal operation of the washing machine, the pressure plate rotates synchronously with the main shaft.

[0027] The elastic telescopic arm is a rubber telescopic sleeve, which is also provided with a stainless steel self-resetting elastic compression spring inside. It has good corrosion resistance, long service life, stable and reliable reset elastic force, and its upper elastic force must be sufficient to support the sealing plug to reliably seal the drain outlet, but not enough to resist the downward pulling force of the drainage motor and traction line.

[0028] A core shaft 18 is provided in the middle of the lever, and the support wheel is rotatably connected to the lever through the core shaft. The support wheel is located on the outside of the main shaft and eccentrically presses against the bottom surface of the pressure plate. When the pressure plate rotates, the support wheel can also roll accordingly.

[0029] The working principle of the present invention is as follows:

[0030] When the washing machine is washing normally, the rope wheel releases the traction rope, the elastic telescopic arm rebounds and pushes the support wheel to press the pressure plate upward, sealing the drain outlet, and the pressure plate and the support rod rotate synchronously with the inner barrel to prevent water leakage in the inner barrel; when the inner barrel of the washing machine needs to be drained, the drainage motor drives the rope wheel to pull the traction rope downward, and then pulls the lever downward, the support wheel moves downward, and the sealing plug releases the drain outlet, and drainage can be carried out.

[0031] The technical solution of the present invention is not limited to the above-mentioned specific embodiments. Without departing from the scope and spirit of the described embodiments, many modifications and changes are obvious to ordinary technicians in this technical field. Any technical deformation made within the spirit and principles of the present invention falls within the protection scope of the present invention.

Claims

1. A washing machine drainage structure, comprising an inner barrel and an outer barrel of the washing machine, wherein the bottom of the inner barrel is coaxially connected with a main shaft, the main shaft coaxially passes through the bottom of the outer barrel, and the main shaft and the outer barrel are rotatably sealed and connected, characterized in that: The diameter of the barrel mouth of the inner barrel is smaller than the diameter of the barrel bottom, a plurality of guide grooves are arranged on the inner barrel wall, an annular filter is arranged at the bottom edge of the inner barrel, the annular filter forms an annular water collection channel with the inner barrel wall and the inner barrel bottom, at least one drain port is arranged at the bottom edge of the inner barrel, the annular water collection channel is communicated with the drain port, a switchable drain valve is arranged correspondingly below the drain port, a drain pipe is arranged at the bottom of the outer barrel, a pressure plate which can slide up and down is coaxially sleeved on the main shaft, the pressure plate and the main shaft are connected with a directional key, a supporting rod is connected correspondingly between the outer side of the pressure plate and the drain valve, a supporting wheel which is in rolling contact with the pressure plate is arranged below the pressure plate, a lever is arranged non-contactly below the pressure plate, the supporting wheel is rotatably arranged in the middle of the lever, the right end of the lever is connected with a pillar, the left end is connected with an elastic telescopic arm, the lower end of the pillar is connected with The outer barrel is fixedly connected, and the upper end is rotatably hinged to the lever; the lower end of the elastic telescopic arm is connected to the outer barrel, and the upper end is connected to the lever; a traction rope is movably passed through the middle of the elastic telescopic arm, and the upper end of the traction rope is connected to the left end of the lever; a drainage motor is provided at the bottom of the outer barrel, and the motor shaft of the drainage motor is connected with a rope winding wheel, and the lower end of the traction rope is connected to the rope winding wheel; the drain valve is a sealing plug matched with the drain port; the pressure plate is a horizontal plane disc, and a sliding sleeve slidably connected to the main shaft is provided at the center thereof, and key slots are correspondingly provided on the sliding sleeve and the main shaft, and flat keys are matched in the key slots; the elastic telescopic arm is a rubber telescopic sleeve, and a stainless steel self-resetting elastic compression spring is also provided inside it; a core shaft is provided in the middle of the lever, and the support wheel is rotatably connected to the lever through the core shaft.

2. A washing machine drainage structure according to claim 1, characterized in that: The traction rope is made of stainless steel wire rope.

3. A washing machine drainage structure according to claim 1, characterized in that: When there are multiple drainage openings, the multiple drainage openings are evenly distributed along the circumference of the bottom of the inner barrel.

4. A washing machine drainage structure according to claim 1, characterized in that: The active surface of the sealing plug is made of rubber material.

Images