CN120797373A - Filter device of drain valve and washing machine - Google Patents

Abstract

The present invention discloses a filter device for a drain valve and a washing machine, wherein the drain valve includes a drain valve motor and a cavity, and a filter device is installed in the cavity. The filter device includes a first portion and a second portion separated from each other, and a support device connecting the first portion and the second portion. A central flange hole extending toward the second portion is formed in a raised position in the middle of the first portion. A leaky filter screen is formed on the first portion at positions surrounding the central flange hole. A frustum structure extending toward the first portion is formed on the second portion, and the frustum structure extends into the central flange hole. The filter device for the drain valve of the present invention intercepts debris by combining the leaky filter screen and the frustum structure, thereby improving the efficiency of intercepting debris while reducing the impact on the drainage flow rate.

Description

Filter equipment and washing machine of drain valve

Technical field:

the invention relates to the technical field of washing machine accessories, in particular to a filtering device of a drain valve and a washing machine.

The background technology is as follows:

With the continuous improvement of the living standard of people, the washing machine market is increasingly prosperous, and the products are layered endlessly. However, most drain valve filtering devices equipped in the current market generally have significant drawbacks when dealing with silk-like impurities (such as cotton wool, hair, thread ends, etc.), on the one hand, the filtering effect is poor, so that the fine impurities are easy to penetrate a filter screen or adhere to and block, and on the other hand, the design of the filtering structure often hinders the drainage flow rate, and reduces the drainage efficiency. In addition, users face a common pain point in actual use, namely even if the device is disassembled to clean accumulated impurities, the complex structural design of the device often causes abnormal difficulty in reinstallation process, and even the problem of poor installation or poor sealing occurs.

Therefore, there is a need for an improvement over the prior art to address the deficiencies of the prior art.

The invention comprises the following steps:

The present invention is to solve the above problems of the prior art and to provide a filtering device of a drain valve and a washing machine.

The invention adopts the following technical scheme that the filtering device of the drain valve comprises a drain valve motor and a cavity, wherein the filtering device is arranged in the cavity and comprises a first part and a second part which are spaced apart, and a supporting device for connecting the first part and the second part, a central flanging hole extending towards the second part is formed in a protruding mode at the middle position of the first part, a drain filter screen is formed at the position, located around the central flanging hole, of the first part, a round platform structure extending towards the direction of the first part is formed on the second part, and the round platform structure extends into the central flanging hole.

Further, a groove extending towards the first part is formed in the center of the second part in a recessed mode, and the truncated cone structure is formed at the bottom of the groove.

Further, a boss structure is formed on the inner side wall of the groove.

Further, a knob is arranged at the tail end of the cavity, which is close to the second part, and a buckling part with a step part is formed on the surface, facing the filtering device, of the knob in a protruding mode, and the boss structure and the buckling part are buckled together.

Further, a limiting structure is formed on the supporting device in a protruding mode.

Further, a guide groove is formed on the inner side wall of the cavity, and the limit structure can move along the guide groove so as to install the filtering device into the cavity.

Further, an external thread part is formed on the outer surface of the knob, and an internal thread part is formed on the inner side wall of the cavity at a position opposite to the external thread part.

The invention also adopts the following technical scheme that the washing machine comprises the filtering device of the drain valve.

The filtering device of the drain valve has the advantages that sundries are intercepted in a mode of combining the hollow filter screen with the circular truncated cone structure, so that the sundry interception efficiency is improved, and meanwhile, the influence on the drain flow rate is reduced.

Description of the drawings:

fig. 1 is a schematic view of a filtering apparatus of a drain valve according to the present invention.

Fig. 2 is a schematic operation diagram of the filtering device of the drain valve of the present invention.

Fig. 3 is a schematic view showing a filtering device of the drain valve of the present invention and a knob mounted together.

Fig. 4 is a schematic view of a knob.

Fig. 5 is a schematic view of a cavity.

The specific embodiment is as follows:

the invention is further described below with reference to the accompanying drawings.

The filtering device of the drainage valve comprises a drainage valve motor 1 and a cavity 2, wherein the filtering device 3 is arranged in the cavity 2. The filter device 3 comprises a first part 30 and a second part 31 which are spaced apart, the first part 30 and the second part 31 being connected by two symmetrically arranged support means 32. The central flanging hole 300 extending towards the second portion 31 is formed in a protruding manner at the middle position of the first portion 30, and the hollow filter 301 for intercepting the bulk sundries is formed on the first portion 30 at the position around the central flanging hole 300. Each support 32 is formed with a spacing structure 320 protruding therefrom. The second portion 31 is concavely formed with a groove 310 extending toward the first portion 30 at the center, a truncated cone structure 3100 is formed at the bottom of the groove 310, and the truncated cone structure 3100 extends into the center flanging hole 300 to intercept the wire-shaped sundries. Two spaced apart boss structures 3101 are formed on the inner side walls of the recess 310.

The inner side wall of the cavity 2 is provided with symmetrically arranged guide grooves 200, and the limiting structure 320 moves along the guide grooves 200, so that accurate circumferential and radial positioning is always kept when the filter device is installed in the cavity 2 through the cooperation of the limiting structure 320 and the guide grooves 200.

The knob 4 is mounted on the end of the cavity 2 adjacent to the second portion 31, a fastening portion 40 provided with a step portion 400 is formed on the surface of the knob 4 facing the filtering device 3 in a protruding manner, an external thread portion 41 is formed on the outer surface of the knob 4, and an internal thread portion 20 is formed on the inner side wall of the cavity 2 at a position opposite to the external thread portion 41.

In the filtering device of the drain valve, when the filtering device is assembled, the filtering device and the knob are assembled into a whole in advance, at the moment, the boss structure 3101 and the buckling part 40 are buckled together, then the assembled filtering device and the knob are integrally screwed into the cavity 2, the guide groove 200 ensures that the filtering device 3 always keeps accurate circumferential and radial positioning in the screwing process, and the internal thread on the inner side wall of the cavity 2 and the external thread on the knob 4 provide reliable axial locking force through screwing, and the sealing element (not shown) is pressed, so that firm installation and sealing and leakage prevention of a joint are ensured.

The filtering device of the drain valve has the following steps that after water enters the cavity 2 from the water drainage tee joint, the water firstly positively impacts the truncated cone structure 3100 extending out of the filtering device 3. Due to the fiber characteristics of the silk-like impurities (such as hair, cotton wool, thread ends and the like), the silk-like impurities can be preferentially wound and attached on the surface of the truncated cone structure under the impact action, so that efficient primary interception is realized. The water flow then turns and flows to the area where the first portion 30 is located. In the process, water flow carries non-intercepted blocky impurities (such as paper scraps, tiny hard objects and the like) to collide with a large-area air leakage filter screen designed for air leakage. The hollow filter screen effectively blocks the massive impurities with larger volume by virtue of the pore structure of the hollow filter screen, and the secondary interception is completed. Finally, the water flow with two-stage filtration is smoothly led to pass through the holes of the drain screen, enters the next chamber of the drain valve, is collected by the drainage concentrating tee joint and is discharged out of the system.

The foregoing is merely a preferred embodiment of the invention, and it should be noted that modifications could be made by those skilled in the art without departing from the principles of the invention, which modifications would also be considered to be within the scope of the invention.

Claims (8)

1. A filter device for a drain valve, the drain valve comprising a drain valve motor (1) and a cavity (2), characterized in that: the filter device (3) is installed in the cavity (2), the filter device (3) comprises a first part (30) and a second part (31) separated from each other, and a support device (32) connecting the first part (30) and the second part (31), a central flange hole (300) extending toward the second part (31) is formed in a raised position in the middle of the first part (30), a leak filter (301) is formed on the first part (30) at a position around the central flange hole (300), and a frustum structure (3100) extending toward the first part (30) is formed on the second part (31), and the frustum structure (3100) extends into the central flange hole (300). 2. The filter device of the drain valve according to claim 1 is characterized in that the center position of the second part (31) is recessed to form a groove (310) extending toward the first part (30), and the frustum structure (3100) is formed at the bottom of the groove (310). 3. The filter device for a drain valve according to claim 2, characterized in that a boss structure (3101) is formed on the inner side wall of the groove (310). 4. The filter device of the drain valve according to claim 3 is characterized in that: a knob (4) is installed on the end of the cavity (2) adjacent to the second part (31), and a buckle portion (40) with a step portion (400) is formed on the surface of the knob (4) facing the filter device (3), and the boss structure (3101) is buckled together with the buckle portion (40). 5. The filter device of the drain valve according to claim 4, characterized in that a protrusion on the supporting device (32) forms a limiting structure (320). 6. The filter device of the drain valve according to claim 5 is characterized in that a guide groove (200) is formed on the inner wall of the cavity (2), and the limiting structure (320) can move along the guide groove (200) to install the filter device into the cavity (2). 7. The filter device of the drain valve according to claim 6, characterized in that an external thread portion (41) is formed on the outer surface of the knob (4), and an internal thread portion (20) is formed on the inner wall of the cavity (2) at a position opposite to the external thread portion (41). 8. A washing machine, characterized by comprising the filter device of the drain valve according to any one of claims 1 to 7.