A water inlet valve

Abstract

A water inlet valve includes a water inlet pipe for water to flow upwards and a water outlet pipe for water to flow downwards, the water outlet pipe is arranged outside the water inlet pipe, the water outlet pipe is provided with a first guide structure for guiding water flow to the outer wall of the water inlet pipe, so that the water flow flows along the outer wall of the water inlet pipe, which is beneficial to slow down the water flow speed and reduce the water flow noise. The first guide structure includes a rubber pad, the opening size of the rubber pad is positively correlated with the water flow pressure, so as to avoid the water flow being too fast due to the small opening size and thus generating noise. Meanwhile, a second guide structure is also arranged for guiding the water flow from the outer wall of the water inlet pipe to the inner wall of the water outlet pipe, so as to avoid directly impacting the bottom of the water inlet pipe along the outer wall of the water inlet pipe. The first guide structure and the second guide structure work together to jointly reduce the noise generated during the water inlet process of the water inlet valve and improve the user experience.

Description

Technical Field

[0001] This utility model relates to the field of water inlet valve technology, and in particular to a water inlet valve. Background Technology

[0002] The toilet tank automatically fills with water via an inlet valve. When the water level in the tank drops below a certain level, the inlet valve opens, allowing water to flow into the tank until the water level rises to a certain level, at which point the inlet valve closes. During the process of water flowing into the tank through the inlet valve, water also exits through the vent hole in the valve body, colliding with the water in the tank and causing noise. Additionally, due to the stepped joints between the various parts within the inlet valve, the water flowing out can easily impact these joints, generating further noise. Therefore, the existing inlet valve produces considerable noise during the water filling process, affecting the user experience. Utility Model Content

[0003] This utility model provides a water inlet valve, which aims to reduce the noise generated during the water inlet process and improve the user experience.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A water inlet valve includes an inlet pipe for upward water intake and an outlet pipe for downward water discharge. The outlet pipe is disposed outside the inlet pipe. The internal channel of the inlet pipe forms an inlet channel, and the space between the outlet pipe and the inlet pipe forms an outlet channel. A control device is provided between the inlet channel and the outlet channel. The control device controls whether the inlet channel is connected to the outlet channel based on the water level. The valve also includes:

[0006] A first guiding structure, disposed within the outlet pipe, includes a rubber gasket fitted over the inlet pipe for guiding water flow to the outer wall of the inlet pipe. The gap between the rubber gasket and the outer wall of the inlet pipe forms a connecting channel, the size of which is positively correlated with the water flow pressure.

[0007] The second guide structure is located below the first guide structure along the water outlet direction and is disposed on the outer wall of the inlet pipe, for guiding the water flow to the inner wall of the outlet pipe.

[0008] Furthermore, the first guide structure also includes a support base for supporting the rubber pad, and the space between the support base and the outer wall of the water inlet pipe is used to accommodate the deformation of the rubber pad under the impact of water flow; the support base is also provided with a connecting hole connected to the atmospheric environment, and the rubber pad closes and seals itself to the support base under the action of the outflowing water flow, thereby closing the connecting hole.

[0009] Furthermore, the outer wall of the inlet pipe is provided with a protrusion extending radially toward the outlet pipe, and the protrusion constitutes the second guide structure.

[0010] Furthermore, the water inlet pipe includes an upper water inlet pipe and a lower water inlet pipe that are connected vertically, and the connection between the upper water inlet pipe and the lower water inlet pipe forms a step difference. The control device is located at the water outlet end of the upper water inlet pipe, the lower water inlet pipe is connected to the water outlet pipe, and the outer wall of the upper water inlet pipe is provided with the second guide structure.

[0011] Furthermore, the outlet end of the water outlet channel is provided with a tapering structure whose water-passing area gradually decreases along the water outlet direction, which is used to guide the water flow to the outer wall of the water inlet pipe, and the tapering structure is located below the step difference along the water outlet direction.

[0012] Furthermore, the outlet end of the water outlet pipe gradually extends towards the inlet pipe along the water outlet direction; or, the outer wall of the inlet pipe gradually extends towards the outlet end of the water outlet pipe along the water outlet direction; or, the outlet end of the water outlet pipe and the outer wall of the inlet pipe gradually move closer to each other along the water outlet direction.

[0013] Furthermore, the outer wall of the lower water inlet pipe is provided with several diversion plates, which are connected to the water outlet pipe.

[0014] Furthermore, the upper water inlet pipe includes a plug section, one end of which is sealed and adapted to the lower water inlet pipe, and the other end of which is provided with a pressure cap. The pressure cap is provided with several water passage holes, and the pressure cap abuts against the rubber gasket and presses the first guide structure tightly against the water outlet pipe.

[0015] Furthermore, the control device includes a water-stopping component and a float assembly that work together. The water-stopping component is connected to the water outlet pipe and located at the water outlet end of the water inlet pipe. The water-stopping component presses the cap and the rubber gasket against the water outlet pipe. The float assembly is sleeved outside the water outlet pipe.

[0016] Furthermore, the water outlet pipe is provided with a first limiting surface, a second limiting surface, and a first connecting position. The first limiting surface abuts against the support base, the second limiting surface abuts against the pressure cap, and the water-stopping component is connected to the first connecting position.

[0017] The beneficial effects of this utility model are:

[0018] 1. This utility model proposes a water inlet valve, comprising an inlet pipe for upward water intake and an outlet pipe for downward water discharge. The outlet pipe is located outside the inlet pipe, and a first guide structure is provided inside the outlet pipe to guide the water flow to the outer wall of the inlet pipe, allowing the water flow to move along the outer wall of the inlet pipe, thereby slowing down the water flow speed and reducing water flow noise. The first guide structure includes a rubber pad, the opening of which is positively correlated with the water flow pressure, preventing excessively fast water flow due to a small opening, which would generate noise. Simultaneously, a second guide structure is provided to guide the water flow from the outer wall of the inlet pipe to the inner wall of the outlet pipe, preventing the water flow along the outer wall of the inlet pipe from directly impacting the bottom of the inlet pipe. The first and second guide structures work together to reduce the noise generated during the water intake process of the water inlet valve, improving the user experience.

[0019] 2. The water inlet valve proposed in this utility model includes a support seat for supporting the rubber pad in the first guide structure. The support seat restricts the opening of the rubber pad to prevent the water flow from being unable to be guided to the outer wall of the water inlet pipe due to excessive opening. The support seat is also provided with a connecting hole connected to the atmospheric environment. The rubber pad closes and seals itself to the support seat under the action of the water flow, thereby closing the connecting hole. This prevents a large amount of air from impacting the water flow through the vent hole on the water outlet pipe, which would cause noise. It also prevents a large amount of water from flowing out of the vent hole, which would cause noise.

[0020] 3. The present invention proposes a water inlet valve, wherein the outlet end of the water outlet channel is provided with a tapering structure whose water-passing area gradually decreases along the water outlet direction. This tapering structure is used to guide the water flow to the outer wall of the inlet pipe, and is located below the step difference along the water outlet direction. Based on the tapering structure, the water flow is guided from the outlet pipe to the outer wall of the inlet pipe, thereby avoiding the step difference of the outer wall of the inlet pipe, reducing the noise caused by the water flow hitting the step difference, and at the same time lengthening the water flow path to slow down the water flow velocity.

[0021] 4. The water inlet valve proposed in this utility model has several diversion plates on the outer wall of the lower water inlet pipe. The diversion plates are connected to the water outlet pipe, thereby dividing the water flow into several diversions, which can stabilize the flow rate and reduce noise. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of an inlet valve according to the present invention;

[0024] Figure 2 This is a cross-sectional view of an inlet valve according to the present invention;

[0025] Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle;

[0026] Figure 4 for Figure 2 Enlarged view of a section at point B in the middle;

[0027] Figure 5 This is a schematic diagram of the rubber gasket opening of the water inlet valve of this utility model when it is relatively small;

[0028] Figure 6 This is a schematic diagram of the rubber gasket opening of the water inlet valve of this utility model when it is large;

[0029] Figure 7 This is a schematic diagram of the water flow guidance of the tapered structure of an inlet valve according to the present invention;

[0030] Figure 8 This is an exploded view of an inlet valve according to the present invention;

[0031] In the diagram, 10 is the inlet pipe; 101 is the upper inlet pipe; 1011 is the gland; 1012 is the plug section; 1013 is the water passage hole; 102 is the lower inlet pipe; 20 is the outlet pipe; 201 is the first limiting surface; 202 is the second limiting surface; 203 is the first connection position; 204 is the opening; 30 is the diverter plate; 40 is the first guide structure; 401 is the rubber pad; 402 is the support base; 4021 is the connecting hole; 50 is the second guide structure; 60 is the tapering structure; 70 is the control device; 701 is the water-stopping assembly; 702 is the float assembly; 703 is the swing rod; 704 is the connecting rod; 80 is the water inlet channel; 90 is the water outlet channel; 100 is the filter assembly; 110 is the flow limiting assembly; and 120 is the fixing assembly. Detailed Implementation

[0032] The following is combined Figures 1-8 This utility model will be described in detail.

[0033] A water inlet valve includes an inlet pipe 10 for upward water intake and an outlet pipe 20 for downward water discharge. The outlet pipe 20 is located outside the inlet pipe 10. The internal channel of the inlet pipe 10 forms an inlet channel 80, and the space between the outlet pipe 20 and the inlet pipe 10 forms an outlet channel 90. A control device 70 is provided between the inlet channel 80 and the outlet channel 90. The control device 70 controls whether the inlet channel 80 is connected to the outlet channel 90 based on the water level. The valve also includes:

[0034] First guiding structure 40, such as Figure 3As shown, a rubber gasket 401, fitted inside the outlet pipe 20 and outside the inlet pipe 10, is included. The gasket 401 has a bowl-shaped structure, guiding the water flow to the outer wall of the inlet pipe 10. The gap between the gasket 401 and the outer wall of the inlet pipe 10 forms a connecting channel. The size of the connecting channel is positively correlated with the water pressure; that is, the higher the water pressure, the larger the flow area of ​​the connecting channel, preventing excessively fast water flow and noise caused by a small opening. Specifically, when the water pressure is low, the flow area of ​​the connecting channel is small, such as... Figure 5 As shown; when the water pressure is high, the flow area of ​​the connecting channel is large, such as Figure 6 As shown; and,

[0035] The second guiding structure 50, such as Figure 3 As shown, the water inlet pipe 10 is located below the first guide structure 40 along the water outlet direction and is disposed on the outer wall of the water outlet pipe 10. It is used to guide the water flow to the inner wall of the water outlet pipe 20, so as to avoid the water flowing along the outer wall of the water outlet pipe 10 directly hitting the bottom of the water outlet pipe 10. The first guide structure 40 and the second guide structure 50 work together to reduce the noise generated during the water inlet valve process and improve the user experience.

[0036] like Figure 3 As shown, the first guide structure 40 also includes a support base 402 for supporting the rubber pad 401. The space between the support base 402 and the outer wall of the water inlet pipe 10 is used to accommodate the deformation of the rubber pad 401 under the impact of water flow. At the same time, the support base 402 restricts the opening of the rubber pad 401 to prevent the opening from being too large, which would prevent the water flow from being guided to the outer wall of the water inlet pipe 10. Figure 5 As shown, the support base 402 is also provided with a connecting hole 4021 that connects to the atmospheric environment. The rubber gasket 401 closes and seals itself to the support base 402 under the action of the outflowing water, thereby closing the connecting hole 4021. This prevents a large amount of air from impacting the water flow through the vent hole on the water outlet pipe 20, thus preventing noise. It also prevents a large amount of water from flowing out of the vent hole, thus preventing noise. When the inlet valve generates negative pressure due to a momentary water outage, outside air can still be drawn into the inlet valve through the connecting hole 4021, preventing water in the water tank from being re-drawn into the inlet valve. The outer wall of the inlet pipe 10 is provided with a protrusion extending radially toward the outlet pipe 20, and the protrusion constitutes the second guide structure 50.

[0037] In this embodiment, as Figure 2 As shown, the water inlet pipe 10 includes an upper water inlet pipe 101 and a lower water inlet pipe 102 that are connected vertically. The connection between the upper water inlet pipe 101 and the lower water inlet pipe 102 forms a step difference. Therefore, the outer wall of the upper water inlet pipe 101 is provided with a second guide structure 50, which guides the water flow to avoid the step difference and prevents noise caused by the water flow impacting the step difference. The control device 70 is located at the outlet end of the upper water inlet pipe 101. The lower water inlet pipe 102 is integrally formed with the outlet pipe 20, or it can be formed separately. Figure 8As shown, the outer wall of the lower inlet pipe 102 is provided with several diversion plates 30. The diversion plates 30 are connected to the outlet pipe 20. The diversion plates 30 divide the water flow into several streams, thereby stabilizing the flow velocity and reducing noise.

[0038] In this embodiment, the outlet end of the water outlet channel 90 is provided with a tapered structure 60 whose water-passing area gradually decreases along the water outlet direction. This structure guides the water flow to the outer wall of the inlet pipe 10, and the tapered structure 60 is located below the step difference of the outer wall of the inlet pipe 10 along the water outlet direction. Based on the tapered structure 60, the water flow is guided from the outlet pipe 20 to the outer wall of the inlet pipe 10, thereby avoiding the step difference of the outer wall of the inlet pipe 10, reducing the noise caused by the water flow impacting the step difference, and simultaneously extending the water flow path to slow down the water flow velocity. The tapered structure 60 can take various forms, such as the outlet end of the outlet pipe 20 and the outer wall of the inlet pipe 10 gradually extending closer to each other along the water outlet direction. Figure 4 As shown. In other embodiments, the outlet end of the water outlet pipe 20 gradually extends towards the inlet pipe 10 along the water outlet direction; or, the outer wall of the inlet pipe 10 gradually extends towards the outlet end of the water outlet pipe 20 along the water outlet direction.

[0039] like Figure 3 As shown, the upper water inlet pipe 101 includes a plug section 1012. One end of the plug section 1012 is sealed and adapted to the lower water inlet pipe 102. The other end of the plug section 1012 is provided with a pressure cap 1011. A plurality of water passage holes 1013 are provided between the pressure cap 1011 or the pressure cap 1011 and the plug section 1012. The water passage holes 1013 are connected to the water outlet pipe 20. During installation, the pressure cap 1011 seals against the rubber gasket 401 and presses the first guide structure 40 tightly against the water outlet pipe 20.

[0040] In this embodiment, as Figure 8 As shown, the control device 70 includes a water-stopping assembly 701 and a float assembly 702 that are linked together. The water-stopping assembly 701 is hinged to a rocker arm 703. The end of the rocker arm 703 away from the water-stopping assembly 701 is hinged to a connecting rod 704. The end of the connecting rod 704 away from the rocker arm 703 is connected to the float assembly 702. The float assembly 702 rises and falls with the rise and fall of the liquid level, and drives the rocker arm 703 through the connecting rod 704 to control the opening and closing of the overflow hole of the water-stopping assembly 701, thereby realizing the automatic water intake and automatic water shut-off of the water inlet valve.

[0041] A water-stop assembly 701 is connected to the outlet pipe 20 and located at the outlet end of the inlet pipe 10. The water-stop assembly 701 presses the pressure cap 1011 and the rubber gasket 401 tightly against the outlet pipe 20. The float assembly 702 is sleeved on the outside of the outlet pipe 20. Furthermore, the outlet pipe 20 is provided with a first limiting surface 201, a second limiting surface 202, and a first connecting position 203. The first limiting surface 201 abuts against the support base 402, and the second limiting surface 202 abuts against the pressure cap 1011. The water-stop assembly 701 is connected to the first connecting position 203, and the water-stop assembly 701 presses the pressure cap 1011 tightly against the second limiting surface 202 and the support base 402 tightly against the first limiting surface 201. The outlet pipe 20 is also provided with an opening 204 communicating with the connecting hole 4021.

[0042] In this embodiment, the water inlet end of the lower water inlet pipe 102 is provided with a filter assembly 100 and a flow limiting assembly 110 in sequence along the water inlet direction. The bottom outer side of the water inlet pipe 10 is threaded with a fixing assembly 120, which locks the water inlet valve to the water tank.

[0043] The water inlet valve proposed in this embodiment is installed in the toilet tank. When the water level in the tank is lower than the preset low water level, the float assembly 702 is activated in conjunction with the water stop assembly 701, opening the outlet end of the water inlet pipe 10. The water inlet pipe 10 is connected to the water outlet pipe 20. The rubber gasket 401 opens under the action of water flow, guiding the water flow to the outer wall of the water inlet pipe 10 through the rubber gasket 401. Figure 5 and Figure 6 As shown; then, the water flow is guided to the inner wall of the outlet pipe 20 through the protrusion, avoiding the water flow from impacting the step difference of the outer wall of the inlet pipe 10, such as... Figure 5 and Figure 6 As shown, finally, the water flow is guided to the outer wall of the inlet pipe 10 by the tapering structure 60, as... Figure 7 As shown, water flows along the outer wall of the inlet pipe 10 to the bottom of the water tank to replenish the water tank; when the water level in the water tank reaches the preset high water level, the float assembly 702 floats up, and the linkage rod 704 and the valve cover linkage water stop assembly 701 are activated to close the water outlet of the inlet pipe 10, thereby stopping the replenishment of water to the water tank.

[0044] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A water inlet valve, characterized in that, The system includes an inlet pipe for upward water intake and an outlet pipe for downward water output. The outlet pipe is located outside the inlet pipe. The internal channel of the inlet pipe forms an inlet channel, and the space between the outlet pipe and the inlet pipe forms an outlet channel. A control device is provided between the inlet channel and the outlet channel. The control device controls whether the inlet channel is connected to the outlet channel based on the water level. The system also includes: A first guiding structure, disposed within the outlet pipe, includes a rubber gasket fitted over the inlet pipe for guiding water flow to the outer wall of the inlet pipe. The gap between the rubber gasket and the outer wall of the inlet pipe forms a connecting channel, the size of which is positively correlated with the water flow pressure. The second guide structure is located below the first guide structure along the water outlet direction and is disposed on the outer wall of the inlet pipe, for guiding the water flow to the inner wall of the outlet pipe.

2. The water inlet valve as described in claim 1, characterized in that, The first guide structure also includes a support base for supporting the rubber pad, and the space between the support base and the outer wall of the water inlet pipe is used to accommodate the deformation of the rubber pad under the impact of water flow; the support base is also provided with a connecting hole connected to the atmospheric environment, and the rubber pad closes and seals itself to the support base under the action of the outflowing water flow, thereby closing the connecting hole.

3. The water inlet valve as described in claim 2, characterized in that, The outer wall of the inlet pipe is provided with a protrusion extending radially toward the outlet pipe, and the protrusion constitutes the second guide structure.

4. A water inlet valve as described in claim 2 or 3, characterized in that, The water inlet pipe includes an upper water inlet pipe and a lower water inlet pipe that are connected vertically. The connection between the upper water inlet pipe and the lower water inlet pipe forms a step difference. The control device is located at the outlet end of the upper water inlet pipe. The lower water inlet pipe is connected to the outlet pipe. The outer wall of the upper water inlet pipe is provided with the second guide structure.

5. A water inlet valve as described in claim 4, characterized in that, The outlet end of the water outlet channel is provided with a tapering structure whose water-passing area gradually decreases along the water outlet direction, which is used to guide the water flow to the outer wall of the inlet pipe, and the tapering structure is located below the step difference along the water outlet direction.

6. The water inlet valve as described in claim 5, characterized in that, The outlet end of the water pipe gradually extends toward the inlet pipe along the water outlet direction; or, the outer wall of the inlet pipe gradually extends toward the outlet end of the water pipe along the water outlet direction; or, the outlet end of the water pipe and the outer wall of the inlet pipe gradually move closer to each other along the water outlet direction.

7. The inlet valve as described in claim 4, characterized in that, The outer wall of the lower water inlet pipe is provided with several diversion plates, and the diversion plates are connected to the water outlet pipe.

8. A water inlet valve as described in claim 4, characterized in that, The upper water inlet pipe includes a plug section, one end of which is sealed and adapted to the lower water inlet pipe, and the other end of which is provided with a pressure cap. The pressure cap is provided with several water passage holes, and the pressure cap abuts against the rubber gasket and presses the first guide structure tightly against the water outlet pipe.

9. A water inlet valve as described in claim 8, characterized in that, The control device includes a water-stopping component and a float assembly that work together. The water-stopping component is connected to the water outlet pipe and located at the water outlet end of the water inlet pipe. The water-stopping component presses the cap and the rubber gasket against the water outlet pipe. The float assembly is sleeved on the outside of the water outlet pipe.

10. A water inlet valve as described in claim 9, characterized in that, The water outlet pipe is provided with a first limiting surface, a second limiting surface and a first connecting position. The first limiting surface abuts against the support base, the second limiting surface abuts against the pressure cap, and the water-stopping component is connected to the first connecting position.

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