Water outlet connector

Abstract

The utility model relates to the technical field of water pipe connection, in particular to a water outlet connector which comprises a water outlet pipe, an air inlet pipe and an L-shaped connecting pipe, the L-shaped connecting pipe is provided with an extending head and a connector, and the connector is arranged at one end of the water outlet pipe in a sleeving and threaded mode. The extension head and the connector are communicated with each other and are vertically arranged to be used for being connected with a water outlet pipe, and the air inlet pipe is arranged in the connector in a penetrating mode and is perpendicular to the extension head. The device has the effects that gas can be conveniently pumped into water, and meanwhile the cost is reduced.

Description

Technical Field

[0001] This application relates to the technical field of water pipe connections, and in particular to a water outlet connector. Background Technology

[0002] A water outlet connector is a bent adapter used to connect water pipes. Based on their usage, they can be divided into external thread end-connection water pipe connectors, compression fitting water pipe connectors, and self-locking water pipe connectors. External thread end-connection water pipe connectors are typically die-cast from zinc alloy material, and their surfaces are treated with galvanizing, frosting, or chrome plating processes to ensure a tight structure, no porosity, and high strength.

[0003] When a mixture of water and gas needs to be transported through a pipeline, a T-shaped connector is usually used to connect to the end of the pipeline. The water flows along the pipeline at a 90-degree angle, and the other end of the T-shaped connector is used to introduce gas, so that the water flowing through the T-shaped connector carries a certain amount of gas.

[0004] Regarding the aforementioned technologies, if a pressure pump is installed at one end of the T-joint to make the gas pressure greater than the water pressure passing through the corner, thereby injecting the gas into the water inside the pipe, this pressurization method is cumbersome, inconvenient to operate, wastes resources, and increases costs. Utility Model Content

[0005] To facilitate the injection of gas into water and reduce costs, this application provides a water outlet connector.

[0006] The water outlet connector provided in this application adopts the following technical solution:

[0007] A water outlet connector includes a water outlet pipe, an air inlet pipe, and an L-shaped connecting pipe. The L-shaped connecting pipe has an extension head and a connector head. The connector head is sleeved and threadedly connected to one end of the water outlet pipe. The extension head and the connector head are interconnected and arranged perpendicularly. The air inlet pipe passes through the connector head and is perpendicular to the extension head.

[0008] By adopting the above technical solution, compared with the method of using a pressure pump to inject gas into water in related technologies, the outlet connector of this application can directly draw gas into the outlet pipe through the air inlet pipe by utilizing the pressure difference between gas and liquid, without the need to install a pressure pump, simplifying the operation process, reducing costs, and the overall structural design is relatively simple, consisting of components such as the outlet pipe, the air inlet pipe, and the L-shaped connecting pipe. The components are combined by reasonable nesting, threaded connection and other methods, which facilitates manufacturing, installation and maintenance.

[0009] Furthermore, the inner diameter of the connector is larger than the inner diameter of the outlet pipe to form a step difference.

[0010] By adopting the above technical solution, when gas enters through the inlet pipe, the change in pipe diameter at the point where the connector and the outlet pipe are separated alters the flow rate and pressure distribution of the gas and water. This allows the gas to be drawn into the outlet pipe more smoothly and efficiently, improving the suction effect and ensuring that more gas can be incorporated into the water flow, thus enhancing the uniformity of gas-water mixing.

[0011] Furthermore, the connector has an inner end face for the water outlet pipe to abut against, and the L-shaped connector has a fixing head on the outer wall near the extension head for installing the air inlet pipe. The end of the air inlet pipe away from the fixing head protrudes from the inner end face and extends into the water outlet pipe.

[0012] By adopting the above technical solution, since the air inlet pipe extends into the water outlet pipe, under normal working conditions, when the gas enters the water outlet pipe through the air inlet pipe, a certain air pressure area will be formed around the air inlet pipe. If the water flow shows a backflow tendency, it needs to change the flow direction to bypass the air inlet pipe, which increases the resistance to water backflow, thereby playing the role of resisting water backflow.

[0013] Furthermore, the diameter of the air inlet pipe gradually decreases near the end, forming a constriction. The end face of the constriction extends beyond the inner end face into the water outlet pipe.

[0014] By adopting the above technical solution, a constriction is formed at the end of the air inlet pipe. As the inner and outer diameters gradually decrease at the constriction, the gas velocity will increase when passing through the constriction, according to the principles of fluid mechanics. Compared with a normal air inlet pipe opening, the constriction acts like a gas nozzle, thereby more precisely controlling the flow rate and direction of the gas entering the water outlet pipe, allowing the gas to enter the water outlet pipe in a concentrated and high-speed state, and better mix with the water flow.

[0015] Furthermore, the inner diameter of the connector is larger than the inner diameter of the extension head.

[0016] By adopting the above technical solution, the change in the inner diameter between the connector and the extension head can regulate the fluid pressure. The relatively large space at the connector can buffer the pressure shock brought by the entry of gas, avoiding a sudden increase in local pressure caused by the sudden influx of gas, which would affect the stability of the entire fluid system. When the mixed fluid enters the extension head, the smaller pipe diameter causes the fluid pressure to redistribute and tend to stabilize. The difference in inner diameter helps guide the orderly flow of fluid, preventing turbulence and ensuring that the fluid can be transmitted in a relatively stable pressure state in subsequent pipelines such as the outlet pipe.

[0017] Furthermore, the ratio between the inner diameter of the connector and the inner diameter of the extension head is positively correlated with the length of the air intake pipe.

[0018] By adopting the above technical solution, from a fluid dynamics perspective, setting the ratio between the inner diameter of the connector and the inner diameter of the extension head to be positively correlated with the length of the inlet pipe helps optimize the fluid flow state within the connector. As the length of the inlet pipe changes, the ratio of the inner diameters of the connector and extension head also changes accordingly, thus affecting the fluid velocity, pressure, and mixing effect. When the inlet pipe length increases and the inner diameter ratio increases, the diffusion space for gas at the connector is relatively larger, and the fluid velocity within the connector will appropriately decrease, which is beneficial for thorough mixing of gas and water. When the mixed fluid enters the extension head, due to the smaller inner diameter, the velocity will increase. This velocity change conforms to the principles of fluid dynamics, reducing turbulence generation, improving fluid stability, and making the mixing of gas and water more uniform and efficient.

[0019] Furthermore, the ratio between the inner diameter of the connector and the inner diameter of the extension head is defined as x, and the constriction length of the air intake pipe is ≥2.5x.

[0020] By adopting the above technical solution, after establishing a correlation between the inlet pipe constriction length and the ratio of the inner diameter of the connector and extension head, it is possible to ensure that the gas enters the connector in a more stable state to participate in mixing. A constriction length ≥2.5x helps to achieve a smoother pressure transition. During the process of gas entering the connector through the constriction, the longer constriction allows the gas pressure to gradually change from the end of the inlet pipe to the inside of the connector, avoiding sudden pressure changes caused by an excessively short constriction. The gradual pressure change, combined with the change in the inner diameter of the connector and extension head, can better regulate the pressure distribution within the entire fluid system, making the pressure transition more natural and stable when gas and water flow in different pipe diameter regions, reducing fluid turbulence that may be caused by sudden pressure changes.

[0021] Furthermore, the intake pipe is inserted into the fixing head at the end away from the constriction, and the outer wall of the fixing head is threadedly connected to the L-shaped connecting pipe.

[0022] By adopting the above technical solution, the air inlet pipe is inserted into the fixed head, and the outer wall of the fixed head is connected to the L-shaped connecting pipe by threads. The threaded connection itself has high connection strength and self-locking properties. The double-stable connection design makes the air inlet pipe, fixed head, and L-shaped connecting pipe form a reliable integral structure. Even in complex fluid environments and under possible external force interference, the structure of the entire outlet joint can still remain stable.

[0023] Furthermore, the outer peripheral wall of the air intake pipe at a position adjacent to the fixed head is fitted with a retaining bead. The outer peripheral wall of the retaining bead has a retaining protrusion and guide cone surfaces symmetrically arranged on both sides of the retaining protrusion. The L-shaped connecting pipe has a first annular groove that cooperates with the retaining protrusion.

[0024] By adopting the above technical solution, the locking protrusion of the retaining ball cooperates with the first annular groove of the L-shaped connecting pipe to form an axial limiting structure. When subjected to external forces such as fluid impact and vibration, the intake pipe will not move axially within the fixed head, ensuring the positional stability of the intake pipe within the fixed head. When the intake pipe is inserted into the fixed head and installed into the L-shaped connecting pipe, the guide cone surface allows the retaining ball to enter the first annular groove more easily, reducing resistance and difficulty during installation and improving installation efficiency.

[0025] Furthermore, the L-shaped connecting pipe has a first abutting sealing surface that mates with the guide cone surface at a position adjacent to the first annular groove, and the fixing head has a second annular groove at its end for the locking ball to be inserted into, and the fixing head has a second abutting sealing surface that mates with the guide cone surface at a position adjacent to the second annular groove.

[0026] By adopting the above technical solution, the first abutting sealing surface of the L-shaped connecting pipe mates with the guide cone surface of the retaining ball, and the second abutting sealing surface of the fixing head mates with the guide cone surface of the retaining ball. Combined with the interference fit between the air inlet pipe and the fixing head, and the threaded connection between the fixing head and the L-shaped connecting pipe, these related sealing features constitute a multi-layer sealing structure. During the process of gas entering through the air inlet pipe and the entire fluid flowing within the joint, the multiple seals greatly reduce the possibility of gas leakage, ensuring that the gas enters the area where it mixes with water according to a predetermined path. Simultaneously, it prevents fluid from leaking out from the connection point, guaranteeing the overall sealing performance of the outlet joint.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The outlet connector of this application utilizes its structural features to directly draw gas into the outlet pipe through the pressure difference between gas and liquid, thus integrating gas into the water flow. Factors such as the step difference between the connector and the outlet pipe, the constriction design of the air inlet pipe, the reasonable variation of the inner diameter of the connector and extension head, and the correlation between relevant proportions and the length of the air inlet pipe optimize the gas entry process into the water flow from multiple aspects, improving the suction effect, precisely controlling the gas flow rate and direction, and enabling the gas to be integrated into the water flow more smoothly, efficiently, and evenly. This meets the requirements for gas-water mixing in different scenarios and saves on the cost of purchasing a booster pump.

[0029] 2. The change in the inner diameter of the connector to the extension head and the regulation of gas pressure and fluid flow rate by related structures can buffer pressure shocks, guide the orderly flow of fluid, avoid sudden pressure rises and fluid turbulence, ensure that the fluid is transmitted stably under a stable pressure state throughout the pipeline system, and improve the reliability and durability of the entire outlet connector during use.

[0030] 3. The interference fit between the air inlet pipe and the fixed head, the threaded connection between the fixed head and the L-shaped connecting pipe, and the fit between the retaining ball and the corresponding annular groove and the abutting sealing surface reduce the possibility of gas leakage when gas enters through the air inlet pipe and the entire fluid flows in the joint. This prevents fluid from seeping out from various connection parts, ensures that the gas participates in the mixing with water according to the predetermined path, and enables the outlet joint to function stably in fluid transportation scenarios with high sealing requirements, thus ensuring the working efficiency and effectiveness of the entire fluid system. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of a water outlet connector according to an embodiment of this application.

[0032] Figure 2 This is an exploded structural diagram of a water outlet connector according to an embodiment of this application.

[0033] Figure 3 This is a schematic diagram of the overall structure of the water outlet pipe and L-shaped connecting pipe in an embodiment of this application.

[0034] Figure 4 This is a schematic diagram of the overall structure of the intake pipe and fixing head according to an embodiment of this application.

[0035] Figure 5 This is a cross-sectional structural diagram of a water outlet connector according to an embodiment of this application.

[0036] Explanation of reference numerals in the attached drawings: 1. Water outlet pipe; 11. Connecting ear; 12. Sealing ring; 2. Air inlet pipe; 21. Narrow end; 22. Locking bead; 221. Locking protrusion; 222. Guide cone surface; 3. L-shaped connecting pipe; 31. Extension head; 32. Connecting head; 321. Mounting base; 322. First annular groove; 323. First abutment sealing surface; 324. Inner end face; 4. Fixing head; 41. Second annular groove; 42. Second abutment sealing surface. Detailed Implementation

[0037] To make the purpose, technical solution, and advantages of this application clearer, the following description is provided in conjunction with the appendix. Figure 1-5 The present application will be further described in detail with reference to the embodiments.

[0038] This application discloses a water outlet connector. (Refer to...) Figure 1 and Figure 2The outlet connector includes an outlet pipe 1, an air inlet pipe 2, an L-shaped connecting pipe 3, and a fixing head 4. The L-shaped connecting pipe 3 has an extension head 31 and a connector head 32 that are vertically arranged and interconnected. The outlet pipe 1 is installed on the connector head 32. The fixing head 4 is used to install the air inlet pipe 2 onto the L-shaped connecting pipe 3. The extension head 31 is used to connect the end of the pipe. Water enters from the end of the pipe, flows through the extension head 31 and the connector head 32 in sequence, and then enters the outlet pipe 1. Gas is introduced into the air inlet pipe 2 and mixes with the water flow in the connector head 32 using the pressure of the water flow.

[0039] Combination Figure 3 The connector 32 has a mounting base 321 integrally connected to its outer peripheral wall near the end of the outlet pipe 1. The outlet pipe 1 has a connecting lug 11 integrally connected to its outer circumference for engaging with the mounting base 321. When the outlet pipe 1 is inserted into the connector 32, the connecting lug 11 and the mounting base 321 abut against each other and are threaded together by screws or other fasteners. A sealing ring 12 is embedded in the outer peripheral wall of the outlet pipe 1 for abutting against the inner wall of the connector 32. In this embodiment, the number of sealing rings 12 is preferably two, and the two sealing rings 12 are spaced apart along the length of the outlet pipe 1.

[0040] Reference Figure 2 and Figure 4 The intake pipe 2 gradually narrows in both its inner and outer diameters near its end, forming a constriction 21. The end of the intake pipe 2 furthest from the constriction 21 is inserted into the fixing head 4, and the outer wall of the fixing head 4 is threadedly connected to the L-shaped connecting pipe 3. A retaining bead 22 is fitted onto the outer peripheral wall of the intake pipe 2 adjacent to the fixing head 4. The retaining bead 22 has a retaining protrusion 221 and guide cone surfaces 222 symmetrically arranged on both sides of the retaining protrusion 221.

[0041] Combination Figure 5 The L-shaped connecting tube 3 has a first annular groove 322 that mates with the snap-fit ​​protrusion 221, and the fixing head 4 has a second annular groove 41 at its end for the guide cone surface 222 of the retaining bead 22 to enter. The L-shaped connecting tube 3 has a first abutting sealing surface 323 that mates with the guide cone surface 222 at an adjacent position to the first annular groove 322, and the fixing head 4 has a second abutting sealing surface 42 that mates with the guide cone surface 222 at an adjacent position to the second annular groove 41.

[0042] In this embodiment, the intake pipe 2 is made of stainless steel, and the fixing head 4 is made of aluminum. Welding between the two is difficult, and the intake pipe 2 is a thin-walled component, making it prone to deformation and damage during welding. In this embodiment, the retaining bead 22 is preferably an aluminum retaining bead 22 with a certain deformation capacity. The aluminum retaining bead 22 has a through-hole for the intake pipe 2 to pass through. The retaining protrusion 221 and the guide cone surface 222 on the outer side of the retaining bead 22 together form a flat-bottomed V-shape in its cross-section. The fixing head 4 is threaded into the connector 32, and the aluminum retaining bead 22 is pressurized by an interference fit. The guide cone surface 222 provides a seal to prevent water leakage. The inner wall of the aluminum retaining bead 22, deformed by the compression, fixes the intake pipe 2 by friction, thereby achieving the connection.

[0043] In this embodiment, the inner diameter of the connector 32 is larger than the inner diameter of the outlet pipe 1 to form a step difference. When gas enters through the inlet pipe 2, as it passes through the step difference between the connector 32 and the outlet pipe 1, the change in pipe diameter alters the flow rate and pressure distribution of the gas and water. This facilitates the utilization of the existing pressure difference between the gas and liquid, allowing the gas to be drawn into the outlet pipe 1 more smoothly and efficiently, improving the suction effect, ensuring that more gas can be incorporated into the water flow, and enhancing the uniformity of gas-water mixing.

[0044] The connector 32 has an inner end face 324 that abuts against the water supply pipe 1. The end face of the constriction 21 of the air inlet pipe 2 extends beyond the end face of the water supply pipe 1, thus preventing water backflow. The inner diameter of the connector 32 is larger than the inner diameter of the extension head 31, and the ratio between the inner diameter of the connector 32 and the inner diameter of the extension head 31 is positively correlated with the length of the air inlet pipe 2. In this embodiment, if the ratio between the inner diameter of the connector 32 and the inner diameter of the extension head 31 is defined as x, then the length of the constriction 21 of the air inlet pipe 2 is at least 2.5x. From a fluid dynamics perspective, the positive correlation between the inner diameter of the connector 32 and the inner diameter of the extension head 31 and the length of the air inlet pipe 2 helps optimize the fluid flow state within the connector, ensuring that the gas enters the connector in a more stable state to participate in mixing. A constriction 21 length ≥ 2.5x helps to achieve a smoother pressure transition. As the gas passes through the constriction 21 and enters the connector 32, the longer constriction 21 allows the gas pressure to gradually change from the end of the inlet pipe 2 to the connector 32, avoiding sudden pressure changes caused by a constriction 21 being too short. The gradual pressure change, combined with the changes in the inner diameter of the connector 32 and the extension head 31, can better regulate the pressure distribution in the entire fluid system, making the pressure transition more natural and stable when the gas and water flow in different pipe diameter areas, reducing fluid turbulence that may be caused by sudden pressure changes.

[0045] The implementation principle of the outlet connector in this application embodiment is as follows: the inner diameter of the connector 32 is larger than the inner diameter of the outlet pipe 1, forming a step difference. When gas enters through the air inlet pipe 2, as it passes through the step difference between the connector 32 and the outlet pipe 1, the change in pipe diameter alters the flow velocity and pressure distribution of the gas and water. Utilizing the existing pressure difference between the gas and liquid, the gas is drawn into the outlet pipe 1 more smoothly and efficiently, improving the suction effect and allowing more gas to integrate into the water flow, thus enhancing the uniformity of mixing. The constricted end face 21 of the air inlet pipe 2 extends beyond the end face of the outlet pipe 1 into the outlet pipe 1. On the one hand, the inner and outer diameters gradually decrease at the constricted end face 21, increasing the gas flow velocity as it passes through. This allows for precise control of the flow rate and direction of the gas entering the outlet pipe 1, enabling the gas to enter the outlet pipe 1 at a concentrated high speed, like a nozzle, for better mixing with the water flow. On the other hand, the constricted end face 21 extending into the outlet pipe 1 can, to some extent, block the backflow of water, changing the backflow path and increasing backflow resistance.

[0046] The ratio between the inner diameter of connector 32 and the inner diameter of extension head 31 is positively correlated with the length of inlet pipe 2. As the length of inlet pipe 2 changes, the ratio of the inner diameters of connector 32 and extension head 31 changes, affecting fluid velocity, pressure, and mixing effect. When the length of inlet pipe 2 increases and the inner diameter ratio increases, the gas has more space to diffuse at connector 32, and the fluid velocity is appropriately reduced, which is conducive to thorough mixing. After the mixed fluid enters extension head 31, the flow velocity increases due to the smaller inner diameter, which conforms to the principles of fluid dynamics, reduces turbulence, improves fluid stability, and makes the gas and water mix more uniformly and efficiently. At the same time, when the ratio of the inner diameters of connector 32 and extension head 31 is x, the length of the constriction 21 of inlet pipe 2 is at least 2.5x, which helps to achieve a smoother pressure transition. During the process of gas entering connector 32 through constriction 21, the longer constriction 21 causes the gas pressure to change gradually, avoiding sudden pressure changes. Combined with the change of inner diameter, it regulates the pressure distribution of the entire fluid system, ensuring that the pressure transition between gas and water flows in different pipe diameter regions is natural and stable, reducing fluid turbulence.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A water outlet fitting, characterized by: The utility model provides a shower nozzle, including water outlet pipe (1), air inlet pipe (2) and L -shaped connecting pipe (3), L -shaped connecting pipe (3) has extension head (31) and connecting head (32), connecting head (32) is sleeved and is connected in screw thread on one end of water outlet pipe (1), extension head (31) and connecting head (32) intercommunication and perpendicular setting, air inlet pipe (2) is threaded in connecting head (32) and with extension head (31) each other perpendicular.

2. A water outlet connector according to claim 1, characterised in that: The inner diameter of the connecting head (32) is greater than the inner diameter of the water outlet pipe (1) to form a step.

3. A water outlet connector according to claim 1, wherein: The connecting head (32) has an inner end face (324) for abutting the water outlet pipe (1), and the L-shaped connecting pipe (3) is provided with a fixing head (4) on the outer wall near the extension head (31) for mounting the air inlet pipe (2), the air inlet pipe (2) protrudes from the inner end face (324) and extends into the water outlet pipe (1) away from the end connected to the fixing head (4).

4. A water outlet according to claim 3, wherein: The inner and outer diameters of the air inlet pipe (2) gradually decrease at the position near the end to form a necked portion (21), and the end face of the necked portion (21) exceeds the inner end face (324) to extend into the water outlet pipe (1).

5. A water outlet according to claim 4, wherein: The inner diameter of the connecting head (32) is greater than the inner diameter of the extension head (31).

6. A water outlet according to claim 5, wherein: The ratio between the inner diameter of the connecting head (32) and the inner diameter of the extension head (31) is positively correlated with the length of the air inlet pipe (2).

7. A water outlet according to claim 6, wherein: The ratio between the inner diameter of the connecting head (32) and the inner diameter of the extension head (31) is defined as x, and the length of the necked portion (21) of the air inlet pipe (2) is greater than or equal to 2.5x.

8. A water outlet according to claim 3, wherein: The air inlet pipe (2) is inserted into the fixing head (4) at the end away from the necked portion (21), and the outer wall of the fixing head (4) is threadedly connected with the L-shaped connecting pipe (3).

9. A water outlet according to claim 8, wherein: The air inlet pipe (2) is sleeved with a clamping bead (22) at the position adjacent to the fixing head (4), the outer wall of the clamping bead (22) has a clamping convex portion (221) and guide tapered surfaces (222) symmetrically arranged on both sides of the clamping convex portion (221), and the L-shaped connecting pipe (3) is provided with a first ring groove (322) matched with the clamping convex portion (221).

10. A water outlet according to claim 9, wherein: The L-shaped connecting pipe (3) is provided with a first abutting sealing surface (323) matched with the guide tapered surfaces (222) at the position adjacent to the first ring groove (322), and the fixing head (4) is provided with a second ring groove (41) for clamping the clamping bead (22) at the end position, and the fixing head (4) is provided with a second abutting sealing surface (42) matched with the guide tapered surfaces (222) at the position adjacent to the second ring groove (41).

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