One-way valve for water channel of water dispenser

Abstract

The one-way valve comprises a water inlet connector, a channel pointing up and down is arranged in the water inlet connector, a light valve ball moving freely in a falling mode is arranged in the channel, the channel corresponds to a narrow opening in the lower portion of the light valve ball, and the diameter of the narrow opening is smaller than that of the light valve ball. In a normal state, the light valve ball is placed on the narrow opening and covers the narrow opening, and a normally-open flow channel is formed between the outer wall of the light valve ball and the inner wall of the channel above the narrow opening. According to the one-way valve for the water dispenser waterway, the water inlet connector is blocked through the self weight of the light valve ball, the light valve ball can be pushed up when the water flow pressure at the lower end of the water inlet connector is larger than the gravity of the light valve ball, a channel is opened, and when water enters the upper end of the water inlet connector, downward acting force is further applied to the light valve ball; the narrow opening in the water inlet connector is closed more tightly, and the purpose of one-way low-flow opening is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of water valves, in particular to a one-way valve for a water channel of a water dispenser. Background Art

[0002] There are some existing water dispensers that can provide more than two drinking water sources and selectively discharge water at the same water intake nozzle. Take the water circuit of a water dispenser that supplies both sparkling water and hot water as an example. Hot water is discharged through the pressure generated during heating, and its water outlet is open, so the water flow pressure generated during discharge is relatively weak. However, sparkling water needs to be stored in a pressure vessel, so its water outlet is normally closed, and the water outlet pressure is relatively high when it is opened. Since the two types of water share a water outlet channel, in order to prevent sparkling water from entering the hot water heating water circuit, a one-way valve is set between the heating water circuit and the water outlet channel.

[0003] Chinese patent document No. CN211202974U disclosed a one-way three-way valve adjustment mechanism on November 29, 2019. By providing an elastic part and a top block in the fluid channel, water can only flow in one direction in the channel. However, taking the above-mentioned water dispenser as an example, the hot water flow pressure is relatively small, and it is difficult to completely push the top open, resulting in a reduction in the hot water flow rate.

[0004] There is also a one-way valve that limits the direction of water flow through a one-way movable valve plate. However, due to the high pressure of the bubble water, the valve plate is easily damaged, causing the one-way valve to fail. Utility Model Content

[0005] The utility model aims to provide a one-way valve for the water channel of a water dispenser which has a simple and reasonable structure, reliable operation and can be opened in one direction at a low flow rate.

[0006] The purpose of the utility model is achieved in this way:

[0007] A one-way valve for a water channel of a water dispenser comprises a water inlet joint, wherein a channel pointing upward and downward is provided in the water inlet joint, wherein a lightweight valve ball that moves freely in fall is provided in the channel, and wherein the channel also corresponds to a narrow opening below the lightweight valve ball, wherein the diameter of the narrow opening is smaller than the diameter of the lightweight valve ball, wherein the lightweight valve ball is normally placed on and covers the narrow opening, and a normally open flow channel is formed between the outer wall of the lightweight valve ball and the inner wall of the channel above the narrow opening.

[0008] The purpose of the utility model can also be solved by the following technical measures:

[0009] As a more specific solution, the diameter of the lightweight valve ball is smaller than the inner diameter of the channel above the narrow opening, so that the lightweight valve ball can move above the narrow opening, and the gap between the lightweight valve ball and the inner wall of the channel above the narrow opening forms the normally open flow channel. When the lightweight valve ball is pushed away from the narrow opening by the fluid, the fluid can flow between the lightweight valve ball and the inner wall of the channel.

[0010] As a further solution, an upper port and a lower port are respectively provided above and below the corresponding channel of the water inlet joint, and the upper port is fixedly connected to the water outlet joint.

[0011] As a further solution, a flow stopper is provided in the channel above the lightweight valve ball to prevent the lightweight valve ball from abutting against the lower end of the water outlet joint and blocking the water outlet joint; the flow stopper is limitedly matched with the inner wall of the channel, or is fixedly connected to the inner end of the water outlet joint.

[0012] As a further solution, a limiting step is further provided above the channel corresponding to the lightweight valve ball, and the flow stopper is placed on the limiting step; a valve cavity is formed between the flow stopper and the narrow opening, and the lightweight valve ball is arranged in the valve cavity.

[0013] As a further solution, a sealing ring is crimped between the water outlet joint and the edge of the flow stopper to seal the connection between the water outlet joint and the water inlet joint.

[0014] As a further solution, the flow stopper is provided with a central flow channel and peripheral flow channels. The central flow channel is provided with one and is located on the central axis of the flow stopper, and the peripheral flow channels are provided with more than three and are evenly distributed on the periphery of the central flow channel. The length of the central flow channel is greater than the length of the peripheral flow channels, and the lower end of the central flow channel protrudes out of the lower end of the flow stopper. When the lightweight valve ball is pushed upward to the highest point by the fluid, it is against the lower end of the central flow channel, but the other peripheral flow channels are still open to prevent the lightweight valve ball from blocking the channel and affecting the passage of the fluid.

[0015] As a further solution, the water outlet joint is sleeved in the water inlet joint and threadedly matched with the water inlet joint, and the water outlet joint is a two-way joint or a three-way joint; the three ports of the three-way joint are respectively set as the first water inlet, the second water inlet and the water outlet, and the first water inlet is connected to the channel.

[0016] As a further solution, the narrow mouth is in a cone shape that is wider at the top and narrower at the bottom.

[0017] As a further solution, the lightweight valve ball is a silicone ball or a rubber ball, and the silicone ball or the rubber ball is a hollow or solid structure. The silicone ball or the rubber ball itself is a sealing material, and is light in weight. It can be sealed by contacting with the narrow mouth under its own weight. The bottom of the ball can be lifted up by a water flow with very small pressure. The greater the pressure above, the stronger the sealing. Therefore, the one-way valve is particularly suitable for connecting between the bubble water circuit and the hot water circuit, effectively avoiding the situation where the high pressure of the bubble water damages the one-way valve and then enters the hot water circuit, and the pressure of the hot water circuit is small and cannot open the one-way valve.

[0018] The beneficial effects of the utility model are as follows:

[0019] The water inlet joint of the one-way valve for the water channel of this water dispenser is sealed by the deadweight of a lightweight valve ball. When the water flow pressure at the lower end of the water inlet joint is greater than the gravity of the lightweight valve ball, the lightweight valve ball can be pushed up to open the channel. When water flows into the upper end of the water inlet joint, a downward force is further applied to the lightweight valve ball, making the narrow opening in the water inlet joint close more tightly, thereby achieving the purpose of one-way low-flow opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the left view of the utility model.

[0021] Figure 2 for Figure 1 Schematic diagram of the AA cross-sectional structure.

[0022] Figure 3 It is a schematic diagram of the sectional exploded structure of the utility model.

[0023] Figure 4 It is the front view of the utility model.

[0024] Figure 5 It is a top view of the utility model.

[0025] Figure 6 This is a schematic diagram of the structure of the over-current stopper of the utility model.

[0026] Figure 7 It is a schematic cross-sectional view of the lightweight valve ball of the utility model after being pushed open by liquid.

[0027] Reference numerals:

[0028] 10-water inlet connector, 11-valve cavity, 12-upper port, 13-lower port, 14-narrow mouth, 15-limiting step, 20-lightweight valve ball, 30-flow stopper, 31-central flow channel, 32-peripheral flow channel, 40-sealing ring, 50-water outlet connector, 51-first water inlet, 52-water outlet, 53-second water inlet. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0030] Example 1, see Figures 1 to 7 As shown, the present application provides a one-way valve for the water channel of a water dispenser, including a water inlet joint 10, in which a channel pointing upward and downward is provided, in which a lightweight valve ball 20 that moves freely in fall is provided, and the channel also corresponds to a narrow opening 14 below the lightweight valve ball 20, and the diameter of the narrow opening 14 is smaller than the diameter of the lightweight valve ball 20, forming a ball valve, and under normal conditions, the lightweight valve ball 20 is placed on and covers the narrow opening 14, and a normally open flow channel is formed between the outer wall of the lightweight valve ball 20 and the inner wall of the channel above the narrow opening 14.

[0031] The one-way valve for the water channel of a water dispenser provided in the present application has a diameter of the lightweight valve ball 20 that is smaller than the inner diameter of the channel above the narrow opening 14, so that the lightweight valve ball 20 can move above the narrow opening 14, and the gap between the lightweight valve ball 20 and the inner wall of the channel above the narrow opening 14 forms the normal flow channel. When the lightweight valve ball 20 is pushed away from the narrow opening 14 by the fluid, the fluid can pass through the ball valve from the normal flow channel.

[0032] The water inlet joint 10 is respectively provided with an upper port 12 and a lower port 13 corresponding to the channel, and the upper port 12 is fixedly connected with a water outlet joint 50 .

[0033] A flow stopper 30 is also provided in the channel corresponding to the upper part of the lightweight valve ball 20 to prevent the lightweight valve ball 20 from abutting against the lower end of the water outlet joint 50, thereby facilitating the passage of fluid; the flow stopper 30 is limitedly matched with the inner wall of the channel.

[0034] A limiting step 15 is also provided above the lightweight valve ball 20 corresponding to the channel, and the flow stopper 30 is placed on the limiting step 15. The flow stopper 30 is crimped and fixed between the limiting step 15 and the water outlet joint 50; a valve cavity 11 is formed between the flow stopper 30 and the narrow opening 14, and the lightweight valve ball 20 is arranged in the valve cavity 11.

[0035] A sealing ring 40 is also crimped between the water outlet joint 50 and the edge of the flow stopper 30 to seal the connection between the water outlet joint 50 and the water inlet joint 10 .

[0036] The flow stopper 30 is provided with a central flow channel 31 and a peripheral flow channel 32. The central flow channel 31 is provided with one and is located on the central axis of the flow stopper 30, and there are more than three peripheral flow channels 32, preferably 11 peripheral flow channels 32 are provided and are evenly distributed on the periphery of the central flow channel 31 to facilitate the passage of fluid; the length of the central flow channel 31 is greater than the length of the peripheral flow channels 32, and the lower end of the central flow channel 31 protrudes outside the lower end of the flow stopper 30. When the lightweight valve ball 20 is pushed upward to the highest point by the fluid, it abuts against the lower end of the central flow channel 31 to prevent the lightweight valve ball 20 from blocking the channel and affecting the passage of fluid.

[0037] The water outlet connector 50 is sleeved in the water inlet connector 10 and threadedly matched with the water inlet connector 10. The water outlet connector 50 is a tee connector; the three ports of the tee connector are respectively configured as a first water inlet 51, a second water inlet 53 and a water outlet 52.

[0038] The narrow opening 14 is in a cone shape that is wide at the top and narrow at the bottom.

[0039] The light valve ball 20 is a silicone ball or a rubber ball, so that the light valve ball 20 can be easily pushed open, thereby preventing the one-way valve from being unable to open when the water flow is small, or greatly affecting the flow rate.

[0040] Its working principle is: taking a water dispenser that can produce bubble water and hot water as an example, the lower port 13 of the water inlet joint 10 is connected to the hot water supply pipe, the upper port 12 of the water inlet joint 10 is connected to the first water inlet 51 of the water outlet joint 50, the second water inlet 53 of the water outlet joint 50 is connected to the bubble water supply pipe, and the water outlet 52 of the water outlet joint 50 is connected to the water intake nozzle of the water dispenser.

[0041] In normal condition, the light valve ball 20 is placed on the narrow opening 14 and covers the narrow opening 14. Figure 2 As shown. Figure 2 In this state, when the water dispenser takes bubble water, the bubble water flows in from the second water inlet 53 and flows from the water outlet 52 to the water nozzle of the water dispenser (not shown in the figure); in addition, a part of the bubble water enters the channel from the upper port 12 of the water inlet joint 10 and applies pressure to the lightweight valve ball 20, so that the lightweight valve ball 20 is close to the narrow opening 14 in the channel and seals the narrow opening 14 to prevent the bubble water from entering the hot water supply pipe and the hot water making device.

[0042] See also Figure 7 As shown, when the water dispenser uses hot water, the hot water flows into the channel from the lower port 13 of the water inlet joint 10 and lifts up the lightweight valve ball 20. The hot water enters the second water inlet 53 of the water outlet joint 50 through the gap between the lightweight valve ball 20 and the inner wall of the channel above the narrow opening 14 and the channel of the flow block 30, and then flows from the water outlet 52 of the water outlet joint 50 to the water intake nozzle.

[0043] The above is a preferred embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A one-way valve for a water channel of a water dispenser, comprising a water inlet joint (10), wherein the water inlet joint (10) is provided with a channel pointing upward and downward, and characterized in that: A light valve ball (20) that moves freely in fall is arranged in the channel, and the channel also corresponds to a narrow opening (14) below the light valve ball (20), the diameter of the narrow opening (14) is smaller than the diameter of the light valve ball (20), and under normal conditions, the light valve ball (20) is placed on the narrow opening (14) and covers the narrow opening (14), and a normally open flow channel is formed between the outer wall of the light valve ball (20) and the inner wall of the channel above the narrow opening (14).

2. The one-way valve for water channel of a water dispenser according to claim 1, characterized in that: The diameter of the lightweight valve ball (20) is smaller than the inner diameter of the channel above the narrow opening (14), and the gap between the lightweight valve ball (20) and the inner wall of the channel above the narrow opening (14) forms the normally open flow channel.

3. The one-way valve for water channel of a water dispenser according to claim 1, characterized in that: The water inlet joint (10) is provided with an upper port (12) and a lower port (13) respectively at the upper and lower parts of the corresponding channel, and the upper port (12) is fixedly connected to a water outlet joint (50).

4. The one-way valve for water channel of a water dispenser according to claim 3, characterized in that: A flow stopper (30) is also provided in the channel above the light valve ball (20), and the flow stopper (30) is limitedly matched with the inner wall of the channel or fixedly connected to the inner end of the water outlet joint (50).

5. The one-way valve for the water channel of a water dispenser according to claim 4, characterized in that: A limiting step (15) is further provided above the passage corresponding to the lightweight valve ball (20), and the flow stopper (30) is supported on the limiting step (15); a valve cavity (11) is formed between the flow stopper (30) and the narrow opening (14), and the lightweight valve ball (20) is disposed in the valve cavity (11).

6. The one-way valve for water channel of a water dispenser according to claim 5, characterized in that: A sealing ring (40) is also crimped between the water outlet joint (50) and the edge of the flow stopper (30).

7. The one-way valve for water channel of a water dispenser according to claim 4, characterized in that: The flow stopper (30) is provided with a central flow channel (31) and peripheral flow channels (32); the central flow channel (31) is provided with one and is located on the central axis of the flow stopper (30); and the peripheral flow channels (32) are provided with more than three and are evenly distributed on the periphery of the central flow channel (31); the length of the central flow channel (31) is greater than the length of the peripheral flow channels (32), and the lower end of the central flow channel (31) protrudes outside the lower end of the flow stopper (30).

8. The one-way valve for water channel of a water dispenser according to claim 3, characterized in that: The water outlet joint is sleeved in the water inlet joint (10) and threadedly matched with the water inlet joint (10); the water outlet joint (50) is a two-way joint or a three-way joint; the three ports of the three-way joint are respectively arranged as a first water inlet (51), a second water inlet (53) and a water outlet (52); the first water inlet (51) is in communication with the channel.

9. The one-way valve for water channel of a water dispenser according to claim 1, characterized in that: The narrow opening (14) is in the shape of a cone that is wide at the top and narrow at the bottom.

10. The one-way valve for water channel of a water dispenser according to claim 1, characterized in that: The lightweight valve ball (20) is a silicone ball or a rubber ball, and the silicone ball or the rubber ball is a hollow or solid structure.

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