Plastic drain for washing machines

Abstract

The utility model relates to the technical field of plastic fittings of washing machine, concretely relates to a plastic drain pipe of washing machine, include: first bellows, automatic valve subassembly and second bellows, automatic valve subassembly includes the valve casing of two ends opening, the inner wall of valve casing is hinged and is connected with eccentric rotation valve plate spare, eccentric rotation valve plate spare includes eccentric rotation axle part, still include strip -shaped limit board and the elastic stretch spare of oblique setting, the distance between elastic stretch spare and eccentric rotation axle part is less than the distance between strip -shaped limit board and eccentric rotation axle part, the upper surface of one end of eccentric rotation valve plate spare and strip -shaped limit board resist and touch and connect, the lower surface of other end and the oblique upper end of elastic stretch spare connect, the oblique lower end of elastic stretch spare and the inner wall of valve casing connect. The utility model has the rational structure, has prevented the probability that the pollution to the subsequent laundry caused by stopping the odor gas and the fly backflow into the washing machine inner chamber, has strengthened the use effect.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic accessories for washing machines, and in particular to a plastic drain pipe for a washing machine. Background Technology

[0002] The washing machine's drain hose is a crucial component responsible for draining wastewater from the machine, and it's typically made of plastic. In a standard installation procedure, one end of the hose is connected to the washing machine's drain outlet, and the other end is connected to the drain drain to discharge the washing wastewater. To ensure a secure connection, the hose is equipped with a retaining ring, which firmly secures it to the washing machine's drain outlet, facilitating installation and maintenance.

[0003] However, the inventors discovered a significant flaw in the existing drain pipe: when connected to the drain outlet, because the pipe lacks an automatic valve, odorous gases and insects from the drain outlet can easily flow back into the washing machine's interior when the machine is idle and stopped, adhering to internal components. This not only contaminates subsequently washed clothes but also significantly reduces the washing machine's performance, negatively impacting the user experience. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide a plastic drain pipe for a washing machine that prevents odorous gases and flying insects from flowing back into the inner cavity of the washing machine and attaching to the internal parts, thereby reducing the probability of contaminating the clothes washed later and enhancing the performance.

[0005] To solve the above-mentioned technical problems, the present invention adopts a technical solution as follows: a plastic drain pipe for a washing machine is provided, comprising: a first corrugated pipe, an automatic valve assembly, and a second corrugated pipe, wherein the inlet of the automatic valve assembly is connected to the first corrugated pipe, and the outlet is connected to the second corrugated pipe.

[0006] The automatic valve assembly includes a valve housing with openings at both ends. An eccentric rotary valve plate is hinged to the inner wall of the valve housing. The eccentric rotary valve plate includes an eccentric rotary shaft component, a strip-shaped limiting plate, and an inclined elastic tension member. The distance between the elastic tension member and the eccentric rotary shaft component is less than the distance between the strip-shaped limiting plate and the eccentric rotary shaft component. The upper surface of one end of the eccentric rotary valve plate abuts against the strip-shaped limiting plate, and the lower surface of the other end is connected to the upper inclined end of the elastic tension member. The lower inclined end of the elastic tension member is connected to the inner wall of the valve housing. The strip-shaped limiting plate is connected to the inner wall of the valve housing.

[0007] The valve housing includes a relief cavity located below the strip-shaped limiting plate and protruding outward.

[0008] By adopting the above technical solution, during use, the first corrugated pipe of the plastic drain pipe needs to be fixedly connected to the washing machine's drain outlet using a retaining ring, while ensuring the automatic valve assembly is in a relatively vertical position. Then, the second corrugated pipe of the plastic drain pipe is inserted into the drain outlet. When the washing machine needs to discharge wastewater, the wastewater flows into the inner cavity of the automatic valve assembly through the first corrugated pipe. At this time, the wastewater impacts the eccentric rotary valve plate. Under the action of the wastewater's own gravity, it overcomes the tension of the elastic tension member, causing the eccentric rotary valve plate to rotate at a certain angle, allowing the wastewater to flow into the second corrugated pipe and finally drain into the drain outlet. After the wastewater discharge is completed, under the tension of the elastic tension member, the eccentric rotary valve plate will rotate in the opposite direction and abut against the strip-shaped limiting plate. In this state, the eccentric rotary valve plate can effectively prevent odor gases and flying insects from flowing back into the inner cavity of the washing machine and adhering to the internal components, thereby reducing the probability of subsequent laundry contamination and significantly enhancing the performance. In addition, the clearance cavity on the valve body plays an important role. Some of the wastewater flowing out of the first bellows can flow into the second bellows through this clearance cavity. This design reduces the obstruction of wastewater discharge by the eccentric rotary valve plate and helps to improve the working efficiency of the washing machine.

[0009] In a preferred embodiment, the present invention can be further configured such that: the valve housing further includes a square tube, and square flared opening one and square flared opening two are respectively sleeved at both ends of the square tube; square flared opening one is connected to a first corrugated pipe, and square flared opening two is connected to a second corrugated pipe; the clearance cavity is provided on one side wall of the square tube.

[0010] By adopting the above technical solution, the square tube body is connected to square flared ends one and two in a fitted manner. This design facilitates the installation of the eccentric rotary valve plate and the elastic tension component, effectively improving the ease of operation. Simultaneously, applying sealant to the inner walls of both ends of the square tube body significantly enhances the sealing performance at the connection points with square flared ends one and two, further ensuring the reliability of the overall structure.

[0011] In a preferred embodiment, the present invention can be further configured such that: the eccentric rotary valve plate further includes a valve plate and the eccentric rotary shaft component connected to its lower surface; the eccentric rotary shaft component includes two arc-shaped housings spaced apart and connected to the lower surface of the valve plate; the inner cavity of each arc-shaped housing is respectively fitted with a rotating shaft; the outer end of each rotating shaft is rotatably connected to a round tube; and the round tube is respectively connected to the inner wall of a square tube.

[0012] By adopting the above technical solution, since the rotating shaft and the round tube are rotatably connected, under the tension of the elastic tension member, the valve plate and the strip limiting plate abut against each other. The valve plate seals the inner cavity of the square tube, thereby preventing odor gas and flying insects from flowing back into the inner cavity of the washing machine and adhering to the internal parts.

[0013] In a preferred embodiment, the present invention can be further configured such that: the elastic tension member includes a tension spring, a C-shaped hook one and a C-shaped hook two respectively connected to its two ends, the C-shaped hook one being connected to the lower surface of the valve plate, and the C-shaped hook two being connected to the inner wall of the square tube.

[0014] By adopting the above technical solution, when the wastewater flows, its gravity will overcome the tension of the spring, causing the valve plate to rotate at a certain angle, thereby providing a channel for the water in the first corrugated pipe to flow into the second corrugated pipe through the square pipe body; and when the wastewater is discharged, the tension of the spring will drive the valve plate to rotate in the opposite direction and reset.

[0015] In a preferred embodiment, the present invention can be further configured such that: a conical cover is fitted over the outer end of the second bellows, and a limit ring is connected to the outer circle of the outer end of the second bellows.

[0016] By adopting the above technical solution and using the limiting ring, the conical cover is prevented from detaching from the second corrugated pipe, and the conical cover contacts the ground, preventing flying insects in the drain outlet from flying into the external environment.

[0017] In a preferred embodiment, the present invention can be further configured such that: a fixing ring is connected to the large-diameter end of the conical cover, and an annular adhesive layer is connected to the lower surface of the fixing ring.

[0018] By adopting the above technical solution, the annular adhesive layer is bonded and fixed to the ground, so that the fixing ring is sealed to the ground, thus preventing odorous gases in the drain from flowing into the external environment.

[0019] In summary, this utility model has at least one of the following beneficial technical effects:

[0020] When wastewater flows, its gravity overcomes the tension of the spring, causing the valve plate to rotate at a certain angle, thus providing a channel for water in the first corrugated pipe to flow into the second corrugated pipe through the square pipe. After the wastewater is discharged, the tension of the spring drives the valve plate to rotate in the opposite direction and return to its original position. This prevents odors and insects from flowing back into the washing machine cavity and attaching to internal parts, reducing the probability of contaminating subsequent laundry and enhancing the washing effect. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0022] Figure 1 This is a schematic diagram of a preferred embodiment of a plastic drain pipe for a washing machine according to the present invention.

[0023] Figure 2 yes Figure 1 Sectional view along line AA.

[0024] Figure 3 yes Figure 2 A schematic diagram of the connection between the eccentric rotary valve plate and the elastic tension member.

[0025] Figure 4 yes Figure 1 Cross-sectional view of the valve body.

[0026] In the diagram: 1. First bellows; 20. Automatic valve assembly; 3. Second bellows; 4. Conical cover;

[0027] 5. Limiting ring; 6. Fixing ring; 7. Annular adhesive layer;

[0028] 21. Valve body; 22. Eccentric rotary valve plate; 23. Strip limiting plate; 24. Elastic tension member;

[0029] 211. Relief cavity; 212. Square tube; 213. First flared mouth; 214. Second square flared mouth;

[0030] 221. Eccentric rotating shaft component; 222. Valve plate; 2211. Arc-shaped housing; 2212. Rotating shaft;

[0031] 2213. Circular tube;

[0032] 241. Tension spring; 242. C-shaped hook one; 243. C-shaped hook two. Detailed Implementation

[0033] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0034] It should be noted that these figures are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0035] Reference Figures 1-4 The present invention discloses a plastic drain pipe for a washing machine, comprising: a first corrugated pipe 1, an automatic valve assembly 20, and a second corrugated pipe 3. The inlet of the automatic valve assembly 20 is connected to the first corrugated pipe 1, and the outlet is connected to the second corrugated pipe 3.

[0036] The automatic valve assembly 20 includes a valve housing 21 with openings at both ends. An eccentric rotary valve plate 22 is hinged to the inner wall of the valve housing 21. The eccentric rotary valve plate 22 includes an eccentric rotary shaft component 221, a strip-shaped limiting plate 23, and an inclined elastic tension member 24. The distance between the elastic tension member 24 and the eccentric rotary shaft component 221 is less than the distance between the strip-shaped limiting plate 23 and the eccentric rotary shaft component 221. The upper surface of one end of the eccentric rotary valve plate 22 is in contact with the strip-shaped limiting plate 23, and the lower surface of the other end is connected to the upper inclined end of the elastic tension member 24. The lower inclined end of the elastic tension member 24 is connected to the inner wall of the valve housing 21. The strip-shaped limiting plate 23 is connected to the inner wall of the valve housing 21.

[0037] The valve body 21 includes a relief cavity 211 located below the strip-shaped limiting plate 23 and protruding outward.

[0038] The valve body 21 also includes a square tube 212, with square flared ends 213 and 214 respectively fitted onto its two ends. Square flared end 213 connects to the first bellows 1, and square flared end 214 connects to the second bellows 3. A clearance cavity 211 protrudes from one side wall of the square tube 212. The square tube 212 is connected to square flared ends 213 and 214 in a fitted manner. This design facilitates the installation of the eccentric rotary valve plate 22 and the elastic tension member 24, effectively improving operational convenience. Simultaneously, applying sealant to the inner walls of both ends of the square tube 212 significantly enhances the sealing performance at the connection points with square flared ends 213 and 214, further ensuring the reliability of the overall structure.

[0039] The eccentric rotary valve plate 22 also includes a valve plate 222 and an eccentric rotary shaft component 221 connected to its lower surface. The eccentric rotary shaft component 221 includes two arc-shaped housings 2211 spaced apart and connected to the lower surface of the valve plate 222. Rotating shafts 2212 are respectively engaged within the inner cavities of the arc-shaped housings 2211. Round tubes 2213 are rotatably connected to the outer ends of the rotating shafts 2212, and the round tubes 2213 are respectively connected to the inner walls of the square tubes 212. Because the rotating shafts 2212 and the round tubes 2213 are rotatably connected, under the tension of the elastic tension member 24, the valve plate 222 abuts against the strip-shaped limiting plate 23. The valve plate 222 seals the inner cavity of the square tubes 212, thereby preventing odorous gases and flying insects from flowing back into the washing machine cavity and adhering to the internal components.

[0040] The elastic tension member 24 includes a tension spring 241, and C-shaped hooks 242 and 243 connected to its two ends respectively. C-shaped hook 242 is connected to the lower surface of the valve plate 222, and C-shaped hook 243 is connected to the inner wall of the square tube 212. When the wastewater flows, its gravity overcomes the tension of the tension spring 241, causing the valve plate 222 to rotate at a certain angle, thereby providing a channel for the water in the first bellows 1 to flow into the second bellows 3 through the square tube 212. When the wastewater is discharged, the tension of the tension spring 241 will drive the valve plate 222 to rotate in the opposite direction and return to its original position.

[0041] A conical cover 4 is fitted onto the outer end of the second corrugated pipe 3, and a limiting ring 5 is connected to the outer circle of the outer end of the second corrugated pipe 3. By using the limiting ring 5, the conical cover 4 is prevented from detaching from the second corrugated pipe 3, and the conical cover 4 contacts the ground, preventing flying insects in the drain outlet from flying into the external environment.

[0042] A retaining ring 6 is connected to the large-diameter end of the conical cover 4, and an annular adhesive layer 7 is connected to the lower surface of the retaining ring 6. The annular adhesive layer 7 is bonded and fixed to the ground, so that the retaining ring 6 is sealed to the ground, thus preventing odorous gases from the drain outlet from flowing into the external environment.

[0043] The implementation principle of this embodiment is as follows: During use, the first corrugated pipe 1 of the plastic drain pipe needs to be fixedly connected to the drain outlet of the washing machine using a retaining ring, while ensuring that the automatic valve assembly 20 is in a relatively vertical state. Then, the second corrugated pipe 3 of the plastic drain pipe is inserted into the drain outlet. When the washing machine needs to discharge washing wastewater, the wastewater flows into the inner cavity of the automatic valve assembly 20 through the first corrugated pipe 1. At this time, the wastewater impacts the eccentric rotary valve plate 22. Under the action of the wastewater's own gravity, it overcomes the tension of the elastic tension member 24, causing the eccentric rotary valve plate 22 to rotate at a certain angle, allowing the wastewater to flow into the second corrugated pipe 3 and finally drain into the drain outlet. After the wastewater discharge is completed, under the action of the tension of the elastic tension member 24, the eccentric rotary valve plate 22 will rotate in the opposite direction and abut against the strip limiting plate 23. In this state, the eccentric rotary valve plate 22 can effectively prevent odor gases and flying insects from flowing back into the inner cavity of the washing machine and adhering to the internal components, thereby reducing the probability of subsequent washing clothes being contaminated and significantly enhancing the performance. In addition, the relief cavity 211 provided on the valve housing 21 plays an important role. Some of the wastewater flowing out of the first bellows 1 can flow into the second bellows 3 through the relief cavity 211. This design reduces the obstruction of wastewater discharge by the eccentric rotary valve plate 22 and helps to improve the working efficiency of the washing machine.

[0044] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A plastic drain pipe for a washing machine, characterized in that, include: The first corrugated pipe (1), the automatic valve assembly (20), and the second corrugated pipe (3) are connected. The inlet of the automatic valve assembly (20) is connected to the first corrugated pipe (1), and the outlet is connected to the second corrugated pipe (3). The automatic valve assembly (20) includes a valve housing (21) with openings at both ends. An eccentric rotary valve plate (22) is hinged to the inner wall of the valve housing (21). The eccentric rotary valve plate (22) includes an eccentric rotary shaft component (221), a strip limiting plate (23), and an inclined elastic tension member (24). The distance between the elastic tension member (24) and the eccentric rotary shaft component (221) is less than the distance between the strip limiting plate (23) and the eccentric rotary shaft component (221). The upper surface of one end of the eccentric rotary valve plate (22) is in contact with the strip limiting plate (23), and the lower surface of the other end is connected to the upper inclined end of the elastic tension member (24). The lower inclined end of the elastic tension member (24) is connected to the inner wall of the valve housing (21). The strip limiting plate (23) is connected to the inner wall of the valve housing (21). The valve housing (21) includes a relief cavity (211) located below the strip-shaped limiting plate (23) and protruding outward.

2. The plastic drain pipe of the washing machine according to claim 1, characterized in that, The valve housing (21) also includes a square tube (212), with a square flared mouth one (213) and a square flared mouth two (214) respectively fitted at both ends of the square tube (212). The square flared mouth one (213) is connected to the first corrugated pipe (1), and the square flared mouth two (214) is connected to the second corrugated pipe (3). The relief cavity (211) is provided on one side wall of the square tube (212).

3. The plastic drain pipe of the washing machine according to claim 2, characterized in that, The eccentric rotary valve plate (22) further includes a valve plate (222) and an eccentric rotary shaft component (221) connected to its lower surface. The eccentric rotary shaft component (221) includes two arc-shaped housings (2211) spaced apart and connected to the lower surface of the valve plate (222). The inner cavity of the arc-shaped housing (2211) is respectively fitted with a rotating shaft (2212). The outer end of the rotating shaft (2212) is rotatably connected to a round tube (2213). The round tube (2213) is respectively connected to the inner wall of the square tube (212).

4. The plastic drain pipe of the washing machine according to claim 3, characterized in that, The elastic tension member (24) includes a tension spring (241), a C-shaped hook one (242) and a C-shaped hook two (243) respectively connected to its two ends. The C-shaped hook one (242) is connected to the lower surface of the valve plate (222), and the C-shaped hook two (243) is connected to the inner wall of the square tube (212).

5. The plastic drain pipe of the washing machine according to claim 1, characterized in that, The outer end of the second bellows (3) is fitted with a conical cover (4), and the outer circle of the outer end of the second bellows (3) is connected to a limit ring (5).

6. The plastic drain pipe of the washing machine according to claim 5, characterized in that, The large-diameter end of the conical cover (4) is connected to a fixing ring (6), and the lower surface of the fixing ring (6) is connected to an annular adhesive layer (7).

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