Noise reduction structure of water inlet valve

Abstract

The utility model discloses a water inlet valve noise reduction structure which comprises a body and an upper cover, an opening is formed in the top of the body, the upper cover covers the opening, a water inlet channel and a water outlet channel are arranged in the body, a water inlet of the water outlet channel extends upwards to be communicated with the opening, and the water inlet valve noise reduction structure further comprises a buffering cushion located at the opening. The buffer pad is clamped and fixed between the upper cover and the body, the buffer pad is located above a water inlet of the water outlet channel, the bottom face of the buffer pad is provided with an elastic blocking piece extending downwards, the elastic blocking piece is located on one side of the water inlet direction of the water inlet of the water outlet channel, and the elastic blocking piece is located on the other side of the water inlet direction of the water outlet channel. The lower end of the elastic blocking piece is close to or makes contact with the edge of a water inlet of the water outlet channel. After the water inlet valve is opened for water inflow, water flow flows to the water outlet channel from the water inlet channel, the elastic blocking piece achieves the effect of preventing the water flow from entering the water outlet channel, and therefore the flow speed and pressure of the water flow are effectively weakened, the water flow tends to be stable, and water outlet noise is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to water inlet valve sound -absorbing structure belongs to closestool water inlet valve field. BACKGROUND

[0002] Water inlet valve includes water inlet pipeline, water outlet pipeline, water stop rubber pad and back pressure switch, wherein back pressure switch is used for driving water stop rubber pad to open or close the water outlet of water inlet pipeline, when back pressure switch switches to open state, the water pressure in water inlet pipeline breaks water stop rubber pad, water flow enters water outlet pipeline and finally flows to closestool water tank, and when back pressure switch switches to close state, water stop rubber pad seals water inlet pipeline under the action of water pressure difference. Such as the water inlet valve disclosed by the Chinese utility model patent with the authorization announcement No. CN200952603Y, still adds the anti-siphon rubber pad between water inlet pipeline and water outlet pipeline, when water inlet, water flow is output from water inlet pipeline, then lifts the anti-siphon rubber pad, and then enters water outlet pipeline. However, whether the water inlet valve is configured with the anti-siphon rubber pad, due to the great change of water flow direction before entering the water outlet pipeline, for example, the original horizontal or vertical upward switching into vertical downward into the water outlet pipeline, so as to cause the turbulent flow of water flow and trigger the noise. SUMMARY

[0003] The utility model provides a kind of water inlet valve sound -absorbing structure, it overcomes the deficiency of background art.The technical scheme that the utility model solves its technical problems is as follows:

[0004] Water inlet valve sound -absorbing structure, including body and upper cover, the top of the body forms open mouth, the upper cover covers the open mouth, the body inside is equipped with water inlet channel and water outlet channel, the water inlet of the water outlet channel extends and is connected with the open mouth upwards, further include the buffer pad in the open mouth, the buffer pad is clamped and fixed between the upper cover and the body, the buffer pad is located above the water inlet of the water outlet channel, the bottom surface of the buffer pad is equipped with the elastic baffle extending downwards, the elastic baffle is located in the water inlet direction side of the water inlet of the water outlet channel, the lower end of the elastic baffle is close to or contacts the water inlet edge of the water outlet channel.

[0005] In a preferred embodiment: the water inlet of the water outlet channel is annular opening, and the elastic baffle is annular baffle ring.

[0006] In a preferred embodiment: a plurality of notches are arranged on the elastic baffle.

[0007] In a preferred embodiment: the buffer pad is rubber part.

[0008] In a preferred embodiment: the main body is further provided with a connecting channel connecting the water inlet channel and the water outlet channel. The outlet of the connecting channel is located in the middle of the open opening. The water inlet of the water outlet channel surrounds the outlet of the connecting channel. Ventilation holes are provided in the middle of the buffer pad and the middle of the top cover. An anti-siphon pad is also included. The anti-siphon pad covers the outlet of the connecting channel from above. The anti-siphon pad is vertically movable between the buffer pad and the outlet of the connecting channel. The anti-siphon pad is located directly below the vent of the buffer pad. When water enters, the water flow is upward to push open the anti-siphon pad and block the vent of the buffer pad.

[0009] In a preferred embodiment: the body has a reflux groove between the outlet of the connecting channel and the inlet of the water outlet channel, and the periphery of the anti-siphon pad has a side extending downward and into the reflux groove.

[0010] In a preferred embodiment: a dustproof plate is provided above the top cover, and the dustproof plate is located directly above the vent.

[0011] Compared with the prior art, this technical solution has the following advantages:

[0012] 1. After the inlet valve is opened and water enters, the water flows from the inlet channel to the outlet channel. Since the elastic baffle of the buffer pad is located on the side of the inlet in the outlet channel, the elastic baffle blocks the water from entering the outlet channel. That is, the water needs to push open the elastic baffle when entering the outlet channel, so the flow rate and pressure of the water are effectively reduced, the water flow tends to be stable, and the noise of the water outlet is effectively reduced.

[0013] 2. The buffer pad is clamped and fixed between the top cover and the body. The buffer pad also seals the body and the top cover, which can save on sealing elements between the body and the top cover.

[0014] 3. The elastic baffle of the annular retaining ring structure has a notch, which can improve the deformation capacity of the elastic baffle.

[0015] 4. In the water-stopped state, the anti-siphon pad falls down to cover the outlet of the connecting channel, and the outside atmosphere is connected to the open opening of the main body through the vent hole, thereby preventing siphoning.

[0016] 5. The side of the anti-siphon pad extends into the return groove, which can limit the anti-siphon pad on the one hand, and on the other hand, the anti-siphon pad can also obstruct the forward flow of water, further consuming the kinetic energy of the water flow, so that the water flow into the outlet channel is more gentle. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 A partial cross-sectional schematic diagram of the water inlet valve is shown.

[0019] Figure 2 It is illustrated Figure 1 A three-dimensional schematic diagram of the inlet valve body shown.

[0020] Figure 3 It is illustrated Figure 1 A three-dimensional schematic diagram of the buffer pad of the inlet valve shown.

[0021] Figure 4 It is illustrated Figure 1 A three-dimensional schematic diagram of the top cover of the water inlet valve shown.

[0022] Figure 5 It is illustrated Figure 1 Another three-dimensional schematic diagram of the top cover of the water inlet valve shown. Detailed Implementation

[0023] The working principle of the inlet valve is existing technology, as those skilled in the art clearly understand. When the float of the inlet valve falls, causing the back pressure chamber to open the pressure relief hole, the water pressure in the inlet channel will automatically push open the sealing gasket, allowing water to flow into the outlet channel and into the water tank. When the float rises with the water level in the tank and causes the back pressure chamber pressure relief hole to close, the sealing gasket will close the inlet channel again under the action of the pressure difference, ultimately stopping the water flow. The silencing structure of the inlet valve in this application aims to rectify and reduce the speed and pressure of the water flow before it enters the inlet channel, thereby reducing the noise of the outlet water. The following is in conjunction with... Figures 1 to 5 Please provide a detailed explanation.

[0024] The inlet valve silencing structure includes a body 10 and a top cover 20. The top of the body 10 forms an open opening 12, which is covered by the top cover 20. The body 10 has an inlet channel 14 and an outlet channel 16. After the inlet valve's sealing gasket opens the inlet channel, water flows from the inlet channel to the outlet channel. The structure and working principle of the sealing gasket are current technology and are not related to the technical problem solved by this invention, so they will not be described further. The outlet channel 16 extends upwards from its inlet, connecting to the open opening 12. It also includes a buffer pad 30 located at the open opening 12. The buffer pad 30 is clamped and fixed between the top cover 20 and the body 10, and is located above the inlet of the outlet channel 16. The bottom surface of the buffer pad 30 is provided with a downwardly extending elastic baffle 32. An elastic baffle is a baffle structure with elastic deformation capability, capable of deformation under external force. In the context of a water inlet valve, this means it can elastically deform under water pressure. The elastic baffle 32 is located on the water inlet side of the water outlet channel 16, i.e., the side facing the incoming water flow, thus effectively blocking the water flow. The lower end of the elastic baffle 32 is close to or in contact with the edge of the water inlet of the water outlet channel 16, i.e., as close as possible to the edge of the water inlet.

[0025] In the water inlet state, since the elastic baffle 32 is located on the side of the water inlet of the water outlet channel 16, the water flow can enter the water outlet channel 16 after it breaks through the elastic baffle 32. The elastic baffle 32 can absorb the energy of the water flow, so that the water flow can enter the water outlet channel 16 smoothly, effectively reducing and preventing noise generation.

[0026] Preferably, the inlet of the water outlet channel 16 is an annular opening, and the elastic baffle 32 is an annular retaining ring.

[0027] Preferably, the elastic baffle 32 is provided with a plurality of notches 321 at intervals.

[0028] Preferably, the buffer pad 30 is a rubber component.

[0029] Preferably, the main body 10 also has a connecting channel 18 connecting the water inlet channel 14 and the water outlet channel 16, meaning water will pass through the water inlet channel, the connecting channel, and the water outlet channel in sequence. The outlet of the connecting channel 16 (i.e., the end connected to the water outlet channel) is located in the middle of the open opening 12, and the inlet of the water outlet channel 16 surrounds the outlet of the connecting channel 18. The buffer pad 30 and the upper cover 20 are both provided with vent holes 34 and 22 in the middle, and also include an anti-siphon pad 40. The anti-siphon pad 40 covers the outlet of the connecting channel 18 from above, and the anti-siphon pad 40 can be vertically and movably placed between the buffer pad 30 and the outlet of the connecting channel 18. The anti-siphon pad 40 is located directly below the vent hole 34 of the buffer pad 30. When water enters, the water flow rises and pushes open the anti-siphon pad 40, causing the anti-siphon pad 40 to block the vent hole 34 of the buffer pad.

[0030] Preferably, the body 10 is provided with a reflux groove 19 between the outlet of the connecting channel 18 and the inlet of the water outlet channel 16, and the periphery of the anti-siphon pad 40 is provided with a side 42 that extends downward and into the reflux groove.

[0031] Preferably, a dustproof plate 24 is provided above the upper cover 20, and the dustproof plate 24 is located directly above the vent 22.

[0032] The above description is only a preferred embodiment of the present utility model, and therefore cannot be used to limit the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the present utility model patent and the contents of the specification should still fall within the scope of the present utility model.

Claims

1. A water inlet valve silencing structure, comprising a body and a cover, a top of the body is formed with an open mouth, the cover covers the open mouth, the body is internally provided with a water inlet channel and a water outlet channel, a water inlet of the water outlet channel extends upward to communicate with the open mouth, characterized in that: The buffer pad is clamped between the upper cover and the body, and is located above the water inlet of the water outlet channel.

2. The inlet valve sound attenuation structure of claim 1, wherein: The water inlet of the water outlet channel is a ring-shaped opening, and the elastic baffle is a ring-shaped baffle ring.

3. The inlet valve sound attenuation structure of claim 2, wherein: The elastic baffle is provided with a plurality of gaps at intervals.

4. The inlet valve silencing structure according to any one of claims 1 to 3, characterized by: The buffer pad is a rubber part.

5. The inlet valve sound attenuation structure of claim 2, wherein: The body is further provided with a connecting channel connecting the water inlet channel and the water outlet channel, the outlet of the connecting channel is located at the middle of the open hole, the water inlet of the water outlet channel surrounds the periphery of the outlet of the connecting channel, the middle of the buffer pad and the middle of the upper cover are provided with a vent hole, and the anti-siphon pad covers the outlet of the connecting channel from above, and is vertically movably arranged between the buffer pad and the outlet of the connecting channel, the anti-siphon pad is located directly below the vent hole of the buffer pad, and when water flows, the water flow pushes the anti-siphon pad upward and blocks the vent hole of the buffer pad.

6. The inlet valve sound attenuation structure of claim 5, wherein: The body is provided with a backflow groove between the outlet of the connecting channel and the water inlet of the water outlet channel, and the periphery of the anti-siphon pad is provided with a side edge extending downward and extending into the backflow groove.

7. The water inlet valve silencing structure according to claim 5 or 6, characterized by: The upper cover is provided with a dustproof plate located directly above the vent hole.

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