Arc-shaped angle valve structure

Abstract

The invention discloses an arc-shaped angle valve structure, and relates to the field of pipeline joints, the arc-shaped angle valve structure comprises an angle valve main body, the angle valve main body is provided with three sections of holes of an angle valve arc-shaped hole, a valve core mounting hole and a water outlet, the three sections of holes are intersected at a pressure contact section, the pressure contact section is of a folded plate structure, and the angle valve main body is integrally formed through injection molding. And an opening at the upper end of the arc-shaped hole of the angle valve is fixedly connected with the insert. In order to reduce the requirement for injection molding precision, the pressure contact sections are arranged, the mold cores only need to be matched in pairs, the requirement for matching precision is reduced, and therefore the production cost is reduced, and the pressure contact sections are arranged to hinder water from flowing to the water outlet from the arc-shaped hole of the angle valve. Therefore, the valve element and the angle valve body are matched to achieve a closed structure more easily, and the precision requirement is lower.

Description

Technical Field

[0001] This invention relates to the field of pipe fittings, and more specifically to an arc-shaped angle valve structure. Background Technology

[0002] In daily life, concealed angle valves are water control devices pre-embedded in walls or cabinets, mainly used to connect water supply pipes to water-using appliances such as toilets, faucets, showerheads, and water heaters, controlling the opening and closing of water flow or regulating the flow rate. Currently, there are various types and levels of concealed angle valves on the market, but angle valves are generally expensive. Furthermore, because angle valves are mainly used to open and close water flow, their main structure has a significant drawback: after injection molding during production, a plug is needed to seal one side of the main body before it can be used. This increases the cost of secondary production, raising the final selling price. Additionally, angle valves with an arc-shaped inlet pipe structure are lacking.

[0003] For example, a vertical ball valve disclosed in announcement number CN223191036U has a valve body structure that is not integrally formed, and the straight-through structure has higher requirements for the fit between the valve core and the angle valve, as well as higher requirements for the injection molding process. Therefore, the production cost is higher. Summary of the Invention

[0004] The purpose of this invention is to provide an angle valve with an arc-shaped tube whose valve body structure can be manufactured by integral injection molding. Another purpose of this invention is to optimize the contact surface at the end of the valve core during the injection molding process, avoiding the formation of parts that require all three sections of the valve core to make contact. This reduces the requirement for repeated positioning accuracy of the valve core while ensuring yield, thereby reducing production costs. At the same time, it reduces the stress on the valve core during the injection molding process and extends the service life of the valve core.

[0005] The present invention achieves the above-mentioned technical objectives through the following technical means.

[0006] An arc-shaped angle valve structure includes an angle valve body, which has an arc-shaped angle valve hole, a valve core mounting hole, and a water outlet. The three holes converge at a pressure contact section, which has a folded plate structure. The angle valve body is integrally injection molded, and the upper opening of the arc-shaped angle valve hole is fixedly connected to an insert.

[0007] Furthermore, the center of the upper surface of the valve core mounting hole is the center of the valve core mounting hole, and the center of the arc-shaped pipe of the angle valve arc hole coincides with the center of the valve core mounting hole.

[0008] Preferably, the insert is a hollow tube, and the hollow diameter of the insert is larger than the cross-sectional diameter of the arc-shaped hole of the angle valve.

[0009] Furthermore, the center of the upper end face of the arc-shaped hole of the angle valve is not on the axis of the hollow part of the insert, and one side of the arc-shaped hole of the angle valve rests against the inner wall of the insert.

[0010] Furthermore, the arc-shaped hole of the angle valve, the valve core mounting hole, and the water outlet are integrally injection molded from three cores simultaneously, and the end pressure surfaces of the arc-shaped hole of the angle valve, the valve core mounting hole, and the water outlet are pressure contact sections.

[0011] Furthermore, the pressure contact section includes three contact sections: the pressure contact surface at the end of the arc-shaped hole of the angle valve is the arc-shaped contact surface, the pressure contact surface at the end of the valve core mounting hole is the valve core contact surface, and the pressure contact surface at the end of the outlet is the outlet contact surface.

[0012] Furthermore, the arc-shaped contact surface has a folded structure, and the arc-shaped contact surface and the valve core contact surface cooperate to form a pressure surface protrusion. The pressure surface protrusion is located at the connection between the arc-shaped contact surface and the valve core contact surface, and is a small protrusion.

[0013] Furthermore, the valve core contact surface and the outlet contact surface are in contact and fit together, forming an outlet check angle with an inward inclination structure at the connection position between the valve core contact surface and the outlet contact surface.

[0014] Furthermore, the valve core mounting hole is a stepped hole structure, the first stepped surface of the valve core mounting hole is fitted with the valve core for installation, the upper end of the valve core is provided with a valve core meshing gear, the valve core is driven and cooperates with the handwheel, the bottom of the handwheel is provided with a handwheel meshing tooth groove, and the valve core meshing gear and the handwheel meshing tooth groove mesh.

[0015] Preferably, the upper end of the angle valve body is covered with a protective cover, and the protective cover has an opening at the arc-shaped hole of the angle valve and the valve core mounting hole, the diameter of which is larger than that of the arc-shaped hole of the angle valve and the valve core mounting hole.

[0016] The present invention has the following beneficial effects: Compared to the straight-through structure of the comparative technology, which requires a higher sealing accuracy between the valve core and the fitting, leading to increased precision requirements for the injection-molded core, this application reduces the precision requirements by setting a pressure contact section. This allows the cores to only need to fit in pairs, thus reducing the precision requirements and lowering production costs. Furthermore, the pressure contact section obstructs the flow of water from the arc-shaped hole of the angle valve to the outlet, making it easier to achieve a sealed structure between the valve core and the angle valve body with lower precision requirements. Attached Figure Description

[0017] Figure 1 This is a cross-sectional schematic diagram of the angle valve assembly structure of the present invention.

[0018] Figure 2 This is a schematic cross-sectional view of the injection molding body of the angle valve of the present invention.

[0019] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0020] Figure 4 This is a schematic diagram of the structure of the handwheel and valve core of the present invention.

[0021] In the diagram, 1- Angle valve body, 11- Angle valve arc-shaped hole, 12- Valve core mounting hole, 121- Valve core mounting hole center, 13- Pressure contact section, 131- Arc-shaped section contact surface, 132- Outlet contact surface, 1321- Outlet check angle, 133- Valve core contact surface, 134- Pressure surface protrusion, 135- Water flow hole, 14- Outlet, 2- Protective cover, 3- Decorative cover, 4- Insert, 41- Insert step, 5- Handwheel, 51- Handwheel meshing tooth groove, 6- Bolt, 7- Valve core, 71- Valve core meshing gear, 8- Valve core insert. Detailed Implementation

[0022] Example 1: like Figures 1 to 4 The arc-shaped angle valve structure shown includes an angle valve body 1. The angle valve body 1 has three sections of holes: an arc-shaped angle valve hole 11, a valve core mounting hole 12, and a water outlet 14. The three sections of holes converge at a pressure contact section 13. The pressure contact section 13 has a folded plate structure. The angle valve body 1 is integrally injection molded. The upper opening of the arc-shaped angle valve hole 11 is fixedly connected to an insert 4.

[0023] This embodiment includes a one-piece injection-molded angle valve body 1, in which components such as a valve core 7 and a handwheel 5 are installed. The angle valve body 1 is a one-piece injection-molded component, and three interconnected holes are provided inside the angle valve body 1: an arc-shaped angle valve hole 11, a valve core mounting hole 12, and a water outlet 14. The center of the arc structure of the angle valve hole 11 coincides with the center of the hole on the upper surface of the valve core mounting hole 12, that is, with the center 121 of the valve core mounting hole. The central axis of the water outlet 14 intersects perpendicularly with the central axis of the valve core mounting hole 12.

[0024] The angle valve arc-shaped hole 11 is a uniform arc-shaped pipe with a constant cross-sectional area. An insert 4 is fixedly connected to the upper opening of the angle valve arc-shaped hole 11. The insert 4 is integrally formed with the angle valve arc-shaped hole 11 on the angle valve body 1 during injection molding. The insert 4 is a hollow threaded pipe fitting with threads on its outer surface. Specifically, at the middle section of the insert 4, an insert step 41 is provided on the outer surface of the insert 4. Figure 2As shown, the insert step 41 is integrally injection molded with the angle valve body 1, and the insert step 41 is located above the angle valve arc hole 11.

[0025] Above the insert step 41, a thread is provided on the outer surface of the insert 4. Below the insert step 41, the outer wall of the insert 4 has an irregular structure with several U-shaped or inclined annular grooves. The structure of the insert 4 below the insert step 41 is integrally injection molded with the angle valve body 1. Therefore, the structure below the insert step 41 and the angle valve body 1 are injection molded and fixed at the angle valve arc hole 11. Thus, the increased surface area of ​​the outer surface of the insert 4 below the insert step 41 can improve friction and increase the contact area, thereby improving the injection molding structural strength of the insert 4 and the angle valve body 1.

[0026] The inner wall of the insert 4 is a smooth cylindrical surface. A key positional relationship is that the central axis of the upper opening of the angle valve arc-shaped hole 11 does not coincide with the central axis of the hollow part of the insert 4, but is eccentrically positioned. Specifically, one side of the inner wall of the angle valve arc-shaped hole 11 is tangent to or has a small gap with the inner wall of the insert 4, thereby forming a smooth transition surface between one side of the inner wall of the insert 4 and one side of the angle valve arc-shaped hole 11. This not only reduces the difficulty of fitting and positioning, but also reduces stress concentration at the injection-molded connection between the insert 4 and the angle valve body 1.

[0027] The inner diameter of the insert 4 is larger than the diameter of the arc-shaped hole 11 of the angle valve. The inner diameter of the insert 4 is 1.2-1.5 times the diameter of the arc-shaped hole 11 of the angle valve. This is because the insert 4 needs to cooperate with the core and mold during injection molding. After injection molding, the core needs to be extracted, while the insert 4 is fixed to the angle valve body 1. Therefore, when the core is demolded, it needs to pass through the inner through hole of the insert 4. Thus, the inner diameter of the insert 4 needs to be larger than the diameter of the core, and therefore larger than the diameter of the arc-shaped hole 11 of the angle valve. Furthermore, because the arc-shaped hole 11 of the angle valve is a large-angle arc-shaped hole structure with a central angle of 90 degrees, the relative movement trajectory between the core and the angle valve body 1 is arc-shaped. Therefore, the inner diameter of the insert 4 needs to be larger than both the diameter of the core and the diameter of the arc-shaped hole 11 of the angle valve to facilitate the demolding of the core.

[0028] A valve core mounting hole 12 is provided on the angle valve body 1, with its opening direction parallel to that of the insert 4. The valve core mounting hole 12 has a stepped hole structure, and its inner wall is composed of multiple cylindrical surfaces of different diameters from top to bottom, used for positioning and mounting the valve core 7. The end of the valve core mounting hole 12 is connected to the inner end of the angle valve arc-shaped hole 11 and the outlet 14, respectively. The angle valve arc-shaped hole 11 and the outlet 14 are indirectly connected through the valve core mounting hole 12, but are not directly connected. The outlet 14 is a hole arranged in a horizontal direction, and its end is connected to the lower end of the valve core mounting hole 12.

[0029] The inner ends of the three sections of holes—the arc-shaped hole 11 of the angle valve, the valve core mounting hole 12, and the outlet 14—converge at a pressure contact section 13 with a folded structure. The pressure contact section 13 divides the internal piping structure of the angle valve body 1 into two parts, and a vertical water flow hole 135 is provided at the horizontal part of the pressure contact section 13, i.e., the valve core contact surface 133, to connect the two parts of the piping.

[0030] The pressure contact surface 13 consists of three main pressure surfaces formed by the pressure surfaces of the valve core during the injection molding process, corresponding to the arc-shaped hole 11 of the angle valve, the valve core mounting hole 12, and the outlet 14. Because the fit of three core sections is involved, this pressure surface is the main stress concentration area of ​​the angle valve body 1 and has high requirements for the fit of the core. Therefore, in this invention, the end of the core forming the arc-shaped hole 11 of the angle valve fits with the sidewall of the end of the core forming the valve core mounting hole 12, and the end of the core forming the valve core mounting hole 12 fits with the sidewall of the end of the core forming the outlet 14.

[0031] Instead of the three sections of the core forming the arc-shaped hole 11 of the angle valve, the valve core mounting hole 12, and the outlet 14, which are joined together at the pressure contact section 13, the requirement for repeatability positioning accuracy of the three sections is much higher than that of the two-by-two joints between the cores. The two-by-two joints of the cores used in this invention also make it easier for the valve core to achieve the sealing function.

[0032] The main pressure contact surfaces formed by the three cores at the pressure contact section 13 are the arc-shaped contact surface 131, the outlet contact surface 132, and the valve core contact surface 133. Specifically, the arc-shaped contact surface 131 is the end face of the arc-shaped hole 11 of the angle valve, the outlet contact surface 132 is the end face of the outlet 14, and the valve core contact surface 133 is the lower end face of the valve core mounting hole 12. The arc-shaped contact surface 131 has a curved, folded structure. At the connection point between the arc-shaped contact surface 131 and the valve core contact surface 133, a small protrusion, known as the pressure surface protrusion 134, is formed. The design of the pressure surface protrusion 134 is to reduce the precision requirements for the fit between the cores during the injection molding process of the angle valve body 1. As can be seen from the shape of the arc-shaped hole 11 of the angle valve, the end diameter of the core forming the arc-shaped hole 11 of the angle valve is smaller than the diameter of other parts of the arc-shaped hole 11 of the angle valve, and the core is an arc-shaped structure. Therefore, the repeatability of positioning is low. The pressure surface protrusion 134 is the injection molding error structure formed by the core contact and fit between the arc-shaped hole 11 of the angle valve and the valve core mounting hole 12. The retention of the pressure surface protrusion 134 does not affect the use of the angle valve, but it can reduce the requirements for the fit accuracy between the cores, thereby reducing the production cost.

[0033] At the junction of the valve core contact surface 133 and the outlet contact surface 132, a concave inclined angle structure is formed, which is the outlet check angle 1321. The height of the outlet 14 is lower than the height of the water flow hole 135. Therefore, it can prevent the water flow at the outlet 132 from flowing back to the angle valve arc hole 11, and the position of the outlet check angle 1321 is closer to the angle valve arc hole 11 than the position of the water flow hole 135.

[0034] The arc-shaped contact surface 132 of the outlet and the valve core contact surface 133 form the main sealing surface. When the end of the valve core 7 abuts against the water flow hole 135, the arc-shaped hole 11 of the angle valve and the outlet 14 can be isolated.

[0035] The angle valve body, protective cover 2, decorative cover 3, and valve core assembly together constitute the angle valve. The valve core assembly includes a handwheel 5, bolt 6, and valve core 7. The upper end of the valve core 7 has a ring of radially distributed valve core meshing gears 71. The bottom inner wall of the handwheel 5 has a ring of handwheel meshing grooves 51 that match the meshing gears 71 in terms of tooth count and module. By fitting the handwheel 5 onto the upper end of the valve core 7, the gears 71 and the grooves 51 mesh with each other, thereby achieving the rotational drive of the valve core 7 by the handwheel 5. The handwheel 5 and the valve core 7 are fixed together by bolt 6. When the handwheel 5 is turned, the valve core 7 rotates accordingly, and the bolt 6 will not loosen. The angle valve body 1 is covered by a protective cover 2 and a decorative cover 3. The opening of the decorative cover corresponds to the position of the insert 4 and the valve core mounting hole 12. The decorative cover 3 covers the gap between the arc-shaped hole 11 of the angle valve and the valve core mounting hole 12. A protective cover 2 is fitted on the outside of the vertical pipe wall of the arc-shaped hole 11 of the angle valve, and a protective cover 2 is also fitted on the outside of the uppermost pipe wall of the valve core mounting hole 12.

[0036] Example 2: The structure of this embodiment is the same as that of Embodiment 1, and further describes how the angle valve of the present invention prevents backflow of water.

[0037] like Figures 1 to 4 The arc-shaped angle valve structure shown includes an angle valve body 1. The angle valve body 1 has three sections of holes: an arc-shaped angle valve hole 11, a valve core mounting hole 12, and a water outlet 14. The three sections of holes converge at a pressure contact section 13. The pressure contact section 13 has a folded plate structure. The angle valve body 1 is integrally injection molded. The upper opening of the arc-shaped angle valve hole 11 is fixedly connected to an insert 4.

[0038] This embodiment includes a one-piece injection-molded angle valve body 1, in which components such as a valve core 7 and a handwheel 5 are installed. The angle valve body 1 is a one-piece injection-molded component, and three interconnected holes are provided inside the angle valve body 1: an arc-shaped angle valve hole 11, a valve core mounting hole 12, and a water outlet 14. The center of the arc structure of the angle valve hole 11 coincides with the center of the hole on the upper surface of the valve core mounting hole 12, that is, with the center 121 of the valve core mounting hole. The central axis of the water outlet 14 intersects perpendicularly with the central axis of the valve core mounting hole 12.

[0039] The angle valve arc-shaped hole 11 is a uniform arc-shaped pipe with a constant cross-sectional area. An insert 4 is fixedly connected to the upper opening of the angle valve arc-shaped hole 11. The insert 4 is integrally formed with the angle valve arc-shaped hole 11 on the angle valve body 1 during injection molding. The insert 4 is a hollow threaded pipe fitting with threads on its outer surface. Specifically, at the middle section of the insert 4, an insert step 41 is provided on the outer surface of the insert 4. Figure 2 As shown, the insert step 41 is integrally injection molded with the angle valve body 1, and the insert step 41 is located above the angle valve arc hole 11.

[0040] Above the insert step 41, a thread is provided on the outer surface of the insert 4. Below the insert step 41, the outer wall of the insert 4 has an irregular structure with several U-shaped or inclined annular grooves. The structure of the insert 4 below the insert step 41 is integrally injection molded with the angle valve body 1. Therefore, the structure below the insert step 41 and the angle valve body 1 are injection molded and fixed at the angle valve arc hole 11. Thus, the increased surface area of ​​the outer surface of the insert 4 below the insert step 41 can improve friction and increase the contact area, thereby improving the injection molding structural strength of the insert 4 and the angle valve body 1.

[0041] The inner wall of the insert 4 is a smooth cylindrical surface. A key positional relationship is that the central axis of the upper opening of the angle valve arc-shaped hole 11 does not coincide with the central axis of the hollow part of the insert 4, but is eccentrically positioned. Specifically, one side of the inner wall of the angle valve arc-shaped hole 11 is tangent to or has a small gap with the inner wall of the insert 4, thereby forming a smooth transition surface between one side of the inner wall of the insert 4 and one side of the angle valve arc-shaped hole 11. This not only reduces the difficulty of fitting and positioning, but also reduces stress concentration at the injection-molded connection between the insert 4 and the angle valve body 1.

[0042] The inner diameter of the insert 4 is larger than the diameter of the arc-shaped hole 11 of the angle valve. The inner diameter of the insert 4 is 1.2-1.5 times the diameter of the arc-shaped hole 11 of the angle valve. This is because the insert 4 needs to cooperate with the core and mold during injection molding. After injection molding, the core needs to be extracted, while the insert 4 is fixed to the angle valve body 1. Therefore, when the core is demolded, it needs to pass through the inner through hole of the insert 4. Thus, the inner diameter of the insert 4 needs to be larger than the diameter of the core, and therefore larger than the diameter of the arc-shaped hole 11 of the angle valve. Furthermore, because the arc-shaped hole 11 of the angle valve is a large-angle arc-shaped hole structure with a central angle of 90 degrees, the relative movement trajectory between the core and the angle valve body 1 is arc-shaped. Therefore, the inner diameter of the insert 4 needs to be larger than both the diameter of the core and the diameter of the arc-shaped hole 11 of the angle valve to facilitate the demolding of the core.

[0043] A valve core mounting hole 12 is provided on the angle valve body 1, with its opening direction parallel to that of the insert 4. The valve core mounting hole 12 has a stepped hole structure, and its inner wall is composed of multiple cylindrical surfaces of different diameters from top to bottom, used for positioning and mounting the valve core 7. The end of the valve core mounting hole 12 is connected to the inner end of the angle valve arc-shaped hole 11 and the outlet 14, respectively. The angle valve arc-shaped hole 11 and the outlet 14 are indirectly connected through the valve core mounting hole 12, but are not directly connected. The outlet 14 is a hole arranged in a horizontal direction, and its end is connected to the lower end of the valve core mounting hole 12.

[0044] The inner ends of the three sections of holes—the arc-shaped hole 11 of the angle valve, the valve core mounting hole 12, and the outlet 14—converge at a pressure contact section 13 with a folded structure. The pressure contact section 13 divides the internal piping structure of the angle valve body 1 into two parts, and a vertical water flow hole 135 is provided at the horizontal part of the pressure contact section 13, i.e., the valve core contact surface 133, to connect the two parts of the piping.

[0045] The pressure contact surface 13 consists of three main pressure surfaces formed by the pressure surfaces of the valve core during the injection molding process, corresponding to the arc-shaped hole 11 of the angle valve, the valve core mounting hole 12, and the outlet 14. Because the fit of three core sections is involved, this pressure surface is the main stress concentration area of ​​the angle valve body 1 and has high requirements for the fit of the core. Therefore, in this invention, the end of the core forming the arc-shaped hole 11 of the angle valve fits with the sidewall of the end of the core forming the valve core mounting hole 12, and the end of the core forming the valve core mounting hole 12 fits with the sidewall of the end of the core forming the outlet 14.

[0046] Instead of the three sections of the core forming the arc-shaped hole 11 of the angle valve, the valve core mounting hole 12, and the outlet 14, which are joined together at the pressure contact section 13, the requirement for repeatability positioning accuracy of the three sections is much higher than that of the two-by-two joints between the cores. The two-by-two joints of the cores used in this invention also make it easier for the valve core to achieve the sealing function.

[0047] The main pressure contact surfaces formed by the three cores at the pressure contact section 13 are the arc-shaped contact surface 131, the outlet contact surface 132, and the valve core contact surface 133. Specifically, the arc-shaped contact surface 131 is the end face of the arc-shaped hole 11 of the angle valve, the outlet contact surface 132 is the end face of the outlet 14, and the valve core contact surface 133 is the lower end face of the valve core mounting hole 12. The arc-shaped contact surface 131 has a curved, folded structure. At the connection point between the arc-shaped contact surface 131 and the valve core contact surface 133, a small protrusion, known as the pressure surface protrusion 134, is formed. The design of the pressure surface protrusion 134 is to reduce the precision requirements for the fit between the cores during the injection molding process of the angle valve body 1. As can be seen from the shape of the arc-shaped hole 11 of the angle valve, the end diameter of the core forming the arc-shaped hole 11 of the angle valve is smaller than the diameter of other parts of the arc-shaped hole 11 of the angle valve, and the core is an arc-shaped structure. Therefore, the repeatability of positioning is low. The pressure surface protrusion 134 is the injection molding error structure formed by the core contact and fit between the arc-shaped hole 11 of the angle valve and the valve core mounting hole 12. The retention of the pressure surface protrusion 134 does not affect the use of the angle valve, but it can reduce the requirements for the fit accuracy between the cores, thereby reducing the production cost.

[0048] At the junction of the valve core contact surface 133 and the outlet contact surface 132, a concave inclined angle structure is formed, which is the outlet check angle 1321. The height of the outlet 14 is lower than the height of the water flow hole 135. Therefore, it can prevent the water flow at the outlet 132 from flowing back to the angle valve arc hole 11, and the position of the outlet check angle 1321 is closer to the angle valve arc hole 11 than the position of the water flow hole 135.

[0049] The arc-shaped contact surface 132 of the outlet and the valve core contact surface 133 form the main sealing surface. When the end of the valve core 7 abuts against the water flow hole 135, the arc-shaped hole 11 of the angle valve and the outlet 14 can be isolated.

[0050] When the valve core 7 is closed, the horizontal structure of the outlet 14 will not provide potential energy for backflow of water. Furthermore, the pipe wall structure at the outlet contact surface is higher on the inside and lower on the outside, or as shown in the figure, higher on the left and lower on the right. This facilitates the discharge of water from the outlet 14 from the inside to the outside. The outlet check angle 1321 is positioned further out than the water flow hole 135. This reduces the requirements for the fitting accuracy of the core during injection molding. On the other hand, the backflow water is more likely to flow to the outlet check angle 1321 rather than backflow to the angle valve arc hole 11 through the water flow hole 135. Therefore, the anti-backflow effect is better.

Claims

1. An arc-shaped angle valve structure, characterized in that, The valve body (1) includes a valve body (1), which has three sections of holes: an arc-shaped hole (11), a valve core mounting hole (12), and a water outlet (14). The three sections of holes converge at the pressure contact section (13), which has a folded plate structure. The valve body (1) is integrally injection molded, and the upper opening of the arc-shaped hole (11) is fixedly connected to the insert (4).

2. The arc-shaped angle valve structure according to claim 1, characterized in that, The center of the upper surface of the valve core mounting hole (12) is the center of the valve core mounting hole (121), and the center of the arc-shaped pipe of the angle valve arc hole (11) coincides with the center of the valve core mounting hole (121).

3. The arc-shaped angle valve structure according to claim 1, characterized in that, The insert (4) is a hollow tube, and the hollow diameter of the insert (4) is larger than the cross-sectional diameter of the arc hole (11) of the angle valve.

4. The arc-shaped angle valve structure according to claim 3, characterized in that, The center of the upper end face of the angle valve arc hole (11) is not on the axis of the hollow part of the insert (4), and one side of the angle valve arc hole (11) rests against the inner wall of the insert (4).

5. An arc-shaped angle valve structure according to claim 1, 2, 3, or 4, characterized in that, The angle valve arc hole (11), the valve core mounting hole (12), and the water outlet (14) are integrally injection molded from three cores at the same time. The end pressure surface of the angle valve arc hole (11), the valve core mounting hole (12), and the water outlet (14) is a pressure contact section (13).

6. The arc-shaped angle valve structure according to claim 5, characterized in that, The pressure contact section (13) includes three contact sections: the pressure contact surface at the end of the angle valve arc hole (11) is the arc section contact surface (131), the pressure contact surface at the end of the valve core mounting hole (12) is the valve core contact surface (133), and the pressure contact surface at the end of the outlet (14) is the outlet contact surface (132).

7. The arc-shaped angle valve structure according to claim 6, characterized in that, The arc-shaped contact surface (131) has a folded structure. The arc-shaped contact surface (131) and the valve core contact surface (133) cooperate to form a pressure surface protrusion (134). The pressure surface protrusion (134) is located at the connection between the arc-shaped contact surface (131) and the valve core contact surface (133) and is a small protrusion.

8. The arc-shaped angle valve structure according to claim 6 or 7, characterized in that, The valve core contact surface (133) and the outlet contact surface (132) are in contact and fit together, and an outlet check angle (1321) with an inward inclination structure is formed at the connection position of the valve core contact surface (133) and the outlet contact surface (132).

9. An arc-shaped angle valve structure according to claim 1, 2, 3, 4, 6, or 7, characterized in that, The valve core mounting hole (12) is a stepped hole structure. The first stepped surface (121) of the valve core mounting hole (12) is fitted with the valve core (7). The upper end of the valve core (7) is provided with a valve core meshing gear (71). The valve core (7) is driven by the handwheel (5). The bottom of the handwheel (5) is provided with a handwheel meshing groove (51). The valve core meshing gear (71) and the handwheel meshing groove (51) mesh.

10. An arc-shaped angle valve structure according to claim 1, 2, 3, 4, 6, or 7, characterized in that, The upper end of the angle valve body (1) is covered with a protective cover (2). The protective cover (2) has an opening at the angle valve arc hole (11) and valve core mounting hole (12), and the opening diameter is larger than the angle valve arc hole (11) and valve core mounting hole (12).

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